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313 results about "Nanomedicine" patented technology

Nanomedicine is the medical application of nanotechnology. Nanomedicine ranges from the medical applications of nanomaterials and biological devices, to nanoelectronic biosensors, and even possible future applications of molecular nanotechnology such as biological machines. Current problems for nanomedicine involve understanding the issues related to toxicity and environmental impact of nanoscale materials (materials whose structure is on the scale of nanometers, i.e. billionths of a meter).

Drug-loaded liposome nano-particles, preparation method thereof and application of drug-loaded liposome nano-particles in treatment of brain glioma

The invention discloses a drug-loaded liposome nano-particle, a preparation method thereof and application of the drug-loaded liposome nano-particle in treatment of brain glioma, and belongs to the technical field of biological nano-medicines. The invention provides a novel copper phthalocyanine derivative and catalase co-loaded lipidosome nanoparticle and application of the novel copper phthalocyanine derivative and catalase co-loaded lipidosome nanoparticle to treatment of brain glioma on the cellular level. The nano-particles are obtained by wrapping copper phthalocyanine derivatives and catalase with lipidosome prepared by a microfluidic method. The co-drug-loaded liposome can catalyze excessive H2O2 in brain glioma to generate oxygen, and O2 is continuously supplied to photodynamic therapy (PDT) to generate active oxygen; meanwhile, Cu < 2 + > can deplete glutathione and improve the oxidative stress level in the glioma, the reduction product Cu < + > can convert H2O2 into hydroxyl radicals with higher toxicity through a Fenton-like reaction, oxidative stress injury is doubly amplified, cascade cooperation of PDT and chemical dynamic therapy (CDT) is achieved, and the treatment effect on the glioma is remarkably enhanced.
Owner:BEIJING NORMAL UNIV AT ZHUHAI +1

Copper death selective induction nano-particles targeting tumor mitochondria

The invention belongs to the cross technical field of nanomedicine, tumor treatment and immunotherapy, and particularly provides tumor mitochondria-targeted copper death selective induction nanoparticles, which are prepared by the following preparation method: S1, specifically coupling TPY and MHI through condensation reaction to obtain MTPY; s2, MTPY and copper ions are subjected to complexation, and an MTPY-Cu complex is obtained; and S3, the MTPY-Cu complex and albumin are subjected to self-assembly, and the MTPY-Cu-coated Alb nanoparticles are formed. The dosage of copper is only 1 / 1000 of that of free Cu < 2 + >, and equivalent immune regulation and killing effects can be achieved; primary tumors and distant tumor focuses can be inhibited, and lung metastasis is reduced; immune memory can be induced, and relapse can be prevented; the traditional Chinese medicine composition is combined with cis-platinum to remarkably enhance the curative effect and reverse the induced immunosuppression; the invention has the advantages of high biological safety and no obvious liver and kidney toxicity or hemolytic reaction.
Owner:THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV

Preparation method and application of mesoporous cerium dioxide nano-drug based on gold nanostar loaded indocyanine green

The preparation method comprises the following steps: synthesizing gold nanostars (GNS) by using a seed growth method, coating mesoporous cerium dioxide (mCeO2) by using a template method, and loading a photosensitizer indocyanine green (ICG), so as to form a nano enzyme diagnosis and treatment system with chemical activity, photoactivity and photothermal effects. In the system, the gold nanostars have a good photo-thermal effect due to the multi-branched structure of the gold nanostars; on one hand, the mesoporous cerium dioxide coated on the outer layer has a chemical effect due to the nano-enzyme effect, and on the other hand, the mesoporous structure of the mesoporous cerium dioxide can better load the photosensitizer indocyanine green. All the components have good stability and biological safety, also have peroxidase simulation activity and a drug loading function, can improve the level of reactive oxygen species (ROS) in a tumor microenvironment and load photosensitizer drugs, and have an excellent anti-tumor effect and small side effects.
Owner:HENAN UNIVERSITY

Breast cancer targeting nanoparticle as well as preparation method and application thereof

The embodiment of the invention provides breast cancer targeting nanoparticles as well as a preparation method and application thereof. According to the embodiment of the invention, the breast cancer targeting nanoparticles are synthesized by preparing the pH sensitive polymer, carrying out co-coupling modification on the pH response polymer and the folic acid albumin nano-carrier and utilizing a controlled desolvation method; the breast cancer targeting nanoparticle is combined with a nano preparation passive targeting strategy, a tumor microenvironment stimulation response strategy and a folic acid active targeting strategy, the effects of an EPR effect, PEG shedding, charge overturning, folic acid ligand-receptor combination and the like are utilized, precise targeting and specific response of tumors are achieved, and targeted accumulation of drugs in a tumor microenvironment is comprehensively improved. Therefore, the breast cancer targeting nanoparticles prepared by the embodiment have the advantages of high targeting property, drug controlled release, improvement of solubility and absorptivity of indissolvable drugs and the like, so that the curative effect of the drugs can be enhanced, the toxic and side effects can be reduced, and the breast cancer targeting nanoparticles have wide application prospects in the field of anti-tumor treatment.
Owner:JINAN UNIVERSITY

Anti-oxidation nano material based on self-assembly of traditional Chinese medicine and copper ions and preparation method of anti-oxidation nano material

The invention belongs to the field of nano-medicine and traditional Chinese medicine, and particularly discloses an antioxidant nano-material based on self-assembly of traditional Chinese medicine and copper ions and a preparation method thereof.The nano-material is prepared from BPCu nano-particles formed by self-assembly of berberine and procyanidine B2 under induction of the copper ions, the BPCu nano-particles are further subjected to surface modification through polyvinylpyrrolidone, and the antioxidant nano-material is prepared. And the stably dispersed PVP-coated BPCu nano structure is obtained. The material is small in particle size, uniform in distribution, good in water solubility and storage stability, excellent in free radical scavenging capacity and catalase-like activity and suitable for adjuvant therapy of oxidative stress related diseases, and the preparation method is easy and convenient to operate, does not need an organic solvent and has good industrialization and disease treatment potential.
Owner:LULIANG PEOPLES HOSPITAL (LÜLIANG HOSPITAL AFFILIATED TO SHANXI MEDICAL UNIV ELEVENTH CLINICAL COLLEGE OF SHANXI MEDICAL UNIV)

Nano drug delivery system for treating neovascular eye diseases and preparation method thereof

The invention belongs to the technical field of nano-drugs, and discloses a multifunctional nano-drug delivery system for treating neovascular eye diseases and a preparation method of the multifunctional nano-drug delivery system. The nano drug delivery system disclosed by the invention is a composite nano preparation which takes dendritic mesoporous silica nanoparticles as a carrier and co-loads cerium zirconium oxide nano enzyme and an anti-VEGF (vascular endothelial growth factor) drug, various active oxygen can be efficiently removed, oxygen is continuously released through catalytic decomposition of hydrogen peroxide, a retina hypoxia microenvironment is improved, and the retina hypoxia effect is improved. According to the present invention, the anti-VEGF drug delivery system can reduce the oxidative stress induced retinal pigment epithelial cell apoptosis rate, reduce the inflammatory reaction, and simultaneously achieve the slow release and the controlled release of the anti-VEGF drug, and the drug effect maintenance time can achieve more than 60 days, such that the multi-target synergistic treatment can be achieved through the synergistic regulation of the multiple pathological links such as oxygen deficit-oxidative stress-inflammation-angiogenesis, and the anti-VEGF drug delivery effect can be achieved. The choroidal neovascularization can be effectively inhibited by single intravitreal injection, and a new strategy of multi-target collaborative treatment is provided for neovascular macular degeneration and other eye diseases.
Owner:SHANGHAI UNIV

Tannic acid modified tungsten disulfide nanosheet and application thereof in treatment of acetaminophen acute liver injury

The invention discloses a tannic acid modified tungsten disulfide nanosheet and application thereof in treatment of acetaminophen acute liver injury, the nanosheet takes a tungsten disulfide nanosheet as a core, and the surface of the tungsten disulfide nanosheet is modified with electronegative tannic acid. The nanosheet disclosed by the invention has good stability and biocompatibility, can be used for preparing a nano-drug for treating acetaminophen acute liver injury, and specifically targets and removes active oxygen at a liver injury part through an electrostatic adsorption effect, so that inflammatory response is inhibited, and symptoms caused by the acute liver injury are effectively relieved.
Owner:HEFEI UNIV OF TECH

A biomimetic nanomedicine carrier of neutrophil membrane fusion liposome and a preparation method and application thereof

The application discloses a kind of neutrophil membrane fusion liposome biomimetic nanomedicine carrier and its preparation method and application, belong to medical field.The carrier includes liposome and the neutrophil membrane fused to liposome;Liposome raw materials include DOPE, DPPC and cholesterol, and mass ratio is 6:3:1 in turn;Liposome and membrane protein mass ratio is 1:1.The application establishes quantitative analysis strategy based on NanoFCM, can accurately evaluate the fusion efficiency and fusion uniformity of NM@lipos at single particle level.Based on DOPE, the hybridization efficiency of NM@lipos (D) reaches 92.0%, which is significantly higher than that of NM@lipos (L) based on lecithin (70.1%).In in vivo experiment, the tumor enrichment capacity of NM@lipos (D) is increased by 5.1 times compared with Lipos (D) in 24 hours, and shows significantly prolonged circulation time.
Owner:OCEAN UNIV OF CHINA

ZIF-8 composite material loaded with SSZ and ICG as well as preparation method and application of ZIF-8 composite material

The invention discloses a ZIF-8 composite material loaded with SSZ and ICG as well as a preparation method and application thereof, and belongs to the field of nano medicine. The preparation method comprises the following steps: mixing salazosulfapyridine, indocyanine green and zinc nitrate hexahydrate to obtain a mixed solution; adding 2-methylimidazole into the mixed solution, and stirring to generate ZIF-8 nanoparticles loaded with salazosulfapyridine and indocyanine green; removing uncombined impurities in the ZIF-8 nano-particles by means of centrifugation and washing, so as to obtain the ZIF-8 composite material loaded with SSZ and ICG; in the ZIF-8 synthesis process, indocyanine green and salazosulfapyridine are entrapped at the same time through a co-dissolution method, and compared with traditional'post-loading 'or'multi-step entrapment', the technological process is greatly simplified, and the drug entrapment efficiency and structural stability are improved; meanwhile, the composite material has good biocompatibility and enhanced cytotoxicity in breast cancer cells, and a novel efficient strategy is provided for combined treatment of breast cancer.
Owner:THE FIRST AFFILIATED HOSPITAL OF BENGBU MEDICAL COLLEGE

Copper ion mediated bivalirudin self-assembled nano-drug as well as preparation method and application thereof

The invention discloses a copper ion mediated bivalirudin self-assembled nano-drug and a preparation method and application thereof, and belongs to the field of biological medicines.The preparation method comprises the following steps that bivalirudin and targeting peptide cRGD are dissolved in an organic solvent, copper salt is dissolved in deionized water, the organic solution and an aqueous solution are mixed, the pH is adjusted to be faintly acid or neutral, and the copper ion mediated bivalirudin self-assembled nano-drug is obtained; and fully stirring and reacting to obtain a suspension, centrifuging to remove supernate, and freeze-drying to obtain the freeze-dried powder. On the basis of a metal coordination polypeptide self-assembly strategy, metal ions are introduced on the basis of traditional polypeptide self-assembly, special reaction performance is introduced through coordination of polypeptide functional groups and the metal ions to participate in regulation and control of the polypeptide self-assembly process, and thrombus targeting peptide is introduced on the basis to achieve precise drug delivery at the thrombus part.
Owner:DONGGUAN SANHANG MILITARY CIVIL INTEGRATION INNOVATION RES INST

Cationic polymer targeted nanomaterial-based siRNA nano-drug and application thereof

The invention belongs to the technical field of biological medicines, and discloses a cationic polymer targeted nano material modified siRNA (small interfering ribonucleic acid) nano-drug and application thereof. The siRNA nano-drug disclosed by the invention has the capability of effectively penetrating through the blood brain barrier and improving the brain tissue distribution of the siRNA drug.
Owner:HEFEI INDUSTRIAL PHARMACEUTICAL INSTITUTE CO LTD +1

A copper death-selective inducing nanoparticle targeting tumor mitochondria

The application belongs to the technical field of nanomedicine, tumor treatment and immunotherapy, and specifically provides a copper death selective induction nanoparticle targeting tumor mitochondria, which is prepared by the following preparation method: S1, TPY is specifically coupled with MHI through a condensation reaction to obtain MTPY; S2, MTPY is complexed with copper ions to obtain an MTPY-Cu complex; and S3, the MTPY-Cu complex is self-assembled with albumin to form an MTPY-Cu@Alb nanoparticle. The copper dose of the application is only 1 / 1000 of that of free Cu 2+ , and the equivalent immune regulation and killing effects can be achieved; the primary tumor and distant tumor foci can be inhibited, and lung metastasis can be reduced; and the application can induce immune memory and prevent recurrence; the application is combined with cisplatin to significantly enhance the therapeutic effect and reverse the induced immunosuppression; and the application has high biological safety, and has no obvious hepatorenal toxicity or hemolytic reaction.
Owner:THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV

Method for preventing and treating myocardial hypertrophy through calcium steady-state regulation and control of cassia twig

The invention discloses a method for preventing and treating myocardial hypertrophy through calcium steady-state regulation and control of cassia twig and liquorice decoction, and belongs to the technical field of traditional Chinese medicine pharmacy and nano medicine. The nano-system has a core-shell structure, and a core of the nano-system wraps monarch and minister effect components composed of cassia twig and licorice fat-soluble components and is composed of an ATP responsive polymer; a shell of the pH-responsive adjuvant drug delivery system wraps an adjuvant effect component group composed of liquorice water-soluble components, the pH-responsive adjuvant drug delivery system is composed of a pH-responsive polymer, the surface of the pH-responsive polymer is modified with AT1R targeting peptide, and a preparation method of the pH-responsive adjuvant drug delivery system comprises the following steps: respectively preparing MMG and AEG; two-step self-assembly is carried out through a microfluidic technology, and AEG is used as a molecular template in the second step to guide the shell polymer to coat the core. The nano system disclosed by the invention can actively target hypertrophic myocardial cells, preferentially release AEG in a focus subacid environment, and then release MMG in a high ATP environment in the cells, so that materialization of a monarch, minister, assistant and guide compatibility theory is realized, and the targeting property, bioavailability and synergistic treatment effect of drugs are remarkably improved.
Owner:HANGZHOU NORMAL UNIVERSITY

Ultrasonic response bionic piezoelectric nano-drug for treating epilepsy as well as preparation method and application of ultrasonic response bionic piezoelectric nano-drug

The invention relates to an ultrasonic response bionic piezoelectric nano-drug for treating epilepsy as well as a preparation method and application of the ultrasonic response bionic piezoelectric nano-drug. The ultrasonic response bionic piezoelectric nano-drug comprises hafnium-based piezoelectric nano-particles UIO-66-NH2 etched by sulfuric acid, an anti-epileptic drug, a microglial cell membrane and transferrin receptor targeting peptide, wherein the anti-epileptic drug is loaded in hafnium-based piezoelectric nanoparticles etched by sulfuric acid to form a drug loading core; the microcolloid cell membrane coats the outer surface of the drug loading core; the transferrin receptor targeting peptide is connected to a microglial cell membrane. The ultrasonic response bionic piezoelectric nano-drug is high in brain entering efficiency, stable in drug release amount and clear in preparation method path, is suitable for targeted delivery of various anti-epileptic drugs and treatment and research of nervous system diseases such as epilepsy, can adopt an intravenous injection administration mode and non-invasive administration, can avoid injury caused by an operation, and has a good application prospect. The electrical stimulation is generated in vivo without implanting and taking out the electrode, so that secondary injury and infection are avoided.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA

Polyethylene glycol modified magnesium boride nanosheet and application thereof in treatment of acute liver failure and concurrent hepatic encephalopathy caused by acetaminophen

This invention discloses a polyethylene glycol-modified magnesium boride nanosheet and its application in treating acute liver failure and hepatic encephalopathy caused by acetaminophen. The nanosheet uses magnesium boride nanosheets as a core, with polyethylene glycol modified on the surface to improve biocompatibility. The nanosheet of this invention exhibits good antioxidant properties and can be used to prepare nanomedicines for treating acute liver failure and / or hepatic encephalopathy caused by acetaminophen. It generates reducing hydrogen gas through a hydrolysis reaction, effectively scavenging reactive oxygen species at the site of liver failure, thereby inhibiting inflammatory responses and effectively alleviating symptoms caused by acute liver failure.
Owner:HEFEI UNIV OF TECH

Oral cascade response type nano-drug as well as preparation method and application thereof

The invention provides an oral cascade response type nano-drug as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. According to the nano-drug, a cationic lipid, an ROS responsive lipid and an auxiliary lipid in a specific ratio are adopted to construct a drug-loaded liposome, and surface modification is performed through a colon-targeted coating material to form the nano-drug with a core-shell structure. The medicine can be accurately released at the colon part, the interaction between macrophages and neutrophils is effectively destroyed through the dual effects of promoting M2 polarization of the macrophages and degrading NETs, and the intestinal barrier function is repaired. The invention further relates to a preparation method, a pharmaceutical composition, medical application and a quality control method of the nano-drug, and a new solution is provided for treatment of intestinal barrier dysfunction related diseases.
Owner:TIANJIN MEDICAL UNIV

Hybrid membrane camouflaged nanomedicine loaded with oxidative phosphorylation inhibitor and preparing method thereof

The disclosure provides a hybrid membrane camouflaged nanomedicine loaded with oxidative phosphorylation inhibitor and preparation method thereof. The nanomedicine comprises an inner core and an outer shell coated on the periphery of the inner core. The inner core is a ROS-responsive drug-loaded nanoparticle, and the drug loaded by the ROS-responsive nanocarrier is an oxidative phosphorylation inhibitor. The outer shell is a hybrid membrane of mitochondrial membrane and cancer cell membrane. The nanomedicines can cross the BBB and reach tumor sites by the homologous targeting of cancer cell membrane, and then they can homologously target and enter mitochondria by the mitochondrial membrane. Subsequently, under the high-level ROS environment of the mitochondria, the ROS responsive drug-loaded nanoparticle releases the oxidative phosphorylation inhibitor due to the swell and degradation of the inner core, so that the safe and efficient targeted GBM therapy is achieved.
Owner:HENAN UNIVERSITY

Inflammation environment macrophage targeting small activation nucleic acid nano-drug as well as preparation method and application thereof

The invention discloses an inflammatory environment macrophage targeting small activation nucleic acid nano-drug as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The inflammatory environment macrophage targeting small activation nucleic acid nano-drug provided by the invention is composed of a small activation nucleic acid core and a liposome shell. After the inflammatory environment macrophage targeting small activation nucleic acid nano-drug is actively targeted to an inflammatory environment and enters cells through receptor recognition, a liposome coat is swelled and disintegrated, small activation RNA is released, gene expression is regulated and controlled, M1 type macrophages are reprogrammed into M2 type macrophages from the two aspects of phenotype and metabolic mode, anti-inflammatory factors are released, and the anti-inflammatory effect is achieved. The aim of inhibiting inflammation is fulfilled. Therefore, the invention has a very wide application prospect in gene therapy and immunotherapy of inflammation, infectious diseases and the like.
Owner:HENGQIN HOSPITAL THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIVERSITY (HENGQIN GUANGDONG-MACAO DEEP COOP ZONE CENTRAL HOSPITAL)

Magnetic nano-drug carrier

The invention belongs to the technical field of drug carriers, and particularly relates to a magnetic nano-drug carrier which is prepared by the following steps: selecting traditional Chinese medicine raw materials and auxiliary raw materials, and selecting corresponding equipment for treating the raw materials; traditional Chinese medicine raw materials are pretreated, effective components are extracted through ultrasonic and reflux combination, and finally an extracting solution is purified and concentrated; preparing through a coprecipitation method; the flexible traditional Chinese medicine dressing is prepared by taking anti-inflammatory, analgesic, blood-activating and blood-stasis-removing active ingredients of 19 traditional Chinese medicines as cores and combining with the local magnetic response enrichment characteristic of the magnetic nano-carrier, the flexible traditional Chinese medicine dressing is attached to a pressurized silica gel pad of a PCI postoperative wrist strap for use, local directional enrichment of the active ingredients of the traditional Chinese medicines in a wound is promoted through the magnetic carrier, and the wound healing effect is improved. The pressurizing silica gel pad has the synergistic effects of resisting inflammation, easing pain, improving microcirculation and dredging collaterals and restoring the pulse, solves clinical pain points such as inflammation edema, obvious pain and unsmooth local blood supply of a wrist puncture wound after the PCI operation, and meets the requirements of flexibility, ventilation and fitting of the pressurizing silica gel pad at the same time.
Owner:GUANGANMEN HOSPITAL CHINA ACAD OF CHINESE MEDICAL SCI

Targeted Nanomedicine for Treating Fibrotic Lung Disorders

This disclosure relates to compositions and methods for treating lung disorders, including, for example, pulmonary fibrosis, and other fibrotic disorders. Thioredoxin domain-containing 5 (TXNDC5) is significantly increased in fibrotic lungs from human PF patients. Therefore, a targeted nanoparticle comprising an inhibitor of TXNDC5 was developed, which may have potential to treat pulmonary fibrosis.
Owner:UNIVERSITY OF CHICAGO

Tumor penetration type carrier-free nanomedicine and preparation method and application thereof

The application discloses a tumor-penetrating carrier-free nanomedicine as well as a preparation method and application thereof, and belongs to the field of nanomedicine. The carrier-free nanomedicine can significantly improve water solubility of a water-insoluble compound, has mitochondrion targeting and tumor active penetration capabilities, and under the action of a tertiary amine nitrogen oxygen group, the carrier-free nanomedicine can be mostly transported into mitochondria, which is beneficial to inducing a mitochondrion membrane potential drop and cell apoptosis. The carrier-free nanomedicine also has a good blood long-circulation effect and tumor accumulation capability in a body, and an antitumor effect is better than that of a clinical drug, and the carrier-free nanomedicine also has good biological safety. The preparation method is simple, and can be used for preparation of an antitumor drug.
Owner:ZHEJIANG UNIV

ROS-responsive macrophage-chondrocyte dual-targeting nano-micelle as well as preparation method and application of ROS-responsive macrophage-chondrocyte dual-targeting nano-micelle

The invention relates to an ROS-responsive macrophage-chondrocyte dual-targeting nano-micelle and a preparation method and application thereof, HA capable of targeting and highly expressing CD44 cells is taken as a carrier skeleton, chemical coupling with TK and CUR is carried out in sequence, self-assembly is carried out through intermolecular force to form a stable nano-micelle, and drugs JPH203 and KGN are entrapped at the same time, so that efficient loading and targeting delivery are realized. The HA can be specifically combined with RAW264.7 macrophages and articular cartilage cells for highly expressing a CD44 receptor in an inflammatory state, and is actively delivered in a targeting manner. The ROS response characteristic of TK is utilized, oxidative fracture is carried out in an OA high ROS microenvironment, and micelles are triggered to disintegrate and release drugs accurately. The released JPH203 can inhibit an inflammatory mTOR pathway and effectively resist inflammation, and KGN is beneficial to promoting cartilage cell proliferation and effectively collecting and promoting differentiation of mesenchymal stem cells into cartilage cells, so that in-situ cartilage regeneration is realized, and a more efficient solution with low side effects is provided for osteoarthritis treatment.
Owner:DONGHUA UNIV

A trimethyl chitosan-hyaluronic acid-FMNL2 siRNA nanomedicine and its application

PendingCN122272529AEfficacyBiomarker (medicine)
This invention discloses a trimethyl chitosan-hyaluronic acid-FMNL2 siRNA nanomedicine and its applications. The siRNA molecule consists of a sense strand and an antisense strand, which are anti-complementary to form a double-stranded RNA structure. Each of the sense and antisense strands independently contains two pendant deoxythymidines at its 3' end. The nanomedicine uses trimethyl chitosan as its core framework, efficiently encapsulating the siRNA molecule through electrostatic interactions, and then modifying hyaluronic acid through electrostatic interactions to form core-shell structured nanoparticles. This invention forms a complete technology chain from target validation, siRNA sequence design, nanodelivery system construction, in vivo and in vitro efficacy verification to the development of combination drug strategies. It also provides quantifiable efficacy evaluation biomarkers, offering a clear basis for clinical patient screening and efficacy monitoring.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH

A nano-drug composition, a combined administration system thereof and application thereof

The present application relates to the field of pharmaceutical preparation and nanomedicine, and particularly relates to a kind of nano-drug composition, its combined drug delivery system and application.The nano-drug composition comprises alpha 1-AR blocker and amphiphilic nano-carrier;The alpha 1-AR blocker is loaded in the hydrophobic core formed by amphiphilic nano-carrier;The alpha 1-AR blocker is selected from one or more of prazosin, terazosin, doxazosin;The average particle size of the nano-drug composition is 220-260 nm, the polydispersity index is less than 0.3, and the encapsulation efficiency is greater than 50%.The nano-drug composition of the present application has dual functions of anti-tumor proliferation and immune microenvironment remodeling, improves the dispersion stability of the drug in physiological medium, effectively reduces the in vivo clearance rate, prolongs the circulation time, and realizes the efficient in vivo delivery of the drug.The preparation process of the nano-preparation is stable and can be produced on a large scale.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA

Method for predicting transfection efficiency of fluorinated lipid nanoparticles using multi-nuclear magnetic resonance

A method for analytically detecting and determining the transfection efficiency of fluorinated lipid nanoparticles (FLNPs) by utilizing multi-nuclear magnetic resonance comprises the steps of (1) performing 19F magnetic resonance spectroscopy (19F MRS) on the FLNPs to obtain a fluorine spectrum of a control group; (2) transfecting the FLNPs into cells or living mice and performing 19F MRS to obtain a fluorine spectrum of an experimental group; and (3) predicting FLNPs transfection efficiency by calculating the difference in target fluorine peak areas between the experimental and control groups. The method demonstrates excellent specificity, reproducibility, stability, and linearity, providing a robust technical foundation for large-scale screening of FLNPs-based nanomedicines.
Owner:INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS

Construction and application of supramolecular nanoamplifiers regulated by multiple interactions

This invention discloses the construction and application of a multi-interaction-regulated supramolecular nanoamplifier, belonging to the field of biopharmaceutical technology. For the first time, this invention utilizes 5,10,15,20-tetrakis(4-aminophenyl)porphyrin photosensitizer (TAPP) and manganese dioxide nanozyme (MnO2) to assemble with poly-α-lipoic acid (PαLA) through electrostatic adsorption and metal coordination, respectively, to develop a multi-interaction-regulated GSH-stimulated supramolecular nanoamplifier, PαLA@TAPP-MnO2. This achieves specific delivery and release of the photosensitizer, disrupting redox homeostasis within tumors, thereby enhancing the PDT-mediated anti-tumor efficacy. This has been verified both in vitro and in vivo experiments. The supramolecular nanoamplifier developed in this study provides new insights into the design of anticancer nanomedicines by regulating redox homeostasis within tumors.
Owner:THE FIRST AFFILIATED HOSPITAL OF JINZHOU MEDICAL UNIV

Biomimetic nanomedicines for combating subcutaneous drug-resistant bacterial infections, their preparation methods and applications

This invention belongs to the field of pharmaceutical technology, specifically relating to biomimetic nanomedicines for treating subcutaneous drug-resistant bacterial infections, their preparation methods, and applications. In this invention, dopamine hydrochloride is added during the synthesis of a metal-organic framework to prepare a dandelion-shaped carbon nanozyme precursor. This precursor is then carbonized to obtain a carbon nanozyme with targeting, photoresponsiveness, and peroxidase activity. Finally, berberine hydrochloride is loaded onto the carbon nanozyme to obtain the biomimetic nanomedicine. The biomimetic nanomedicine provided by this invention firstly possesses good biocompatibility; secondly, it has a unique dandelion-like morphology, which is beneficial for its targeting effect; and finally, it exhibits strong photoresponsiveness in the near-infrared region, enabling synergistic and efficient bactericidal action through the mechanisms of antibacterial drugs, photothermal therapy, and chemokinetics. It has significant application value in the preparation of drugs for treating subcutaneous drug-resistant bacterial infections.
Owner:JILIN AGRICULTURAL UNIV

Nano-platform for co-delivery of small interfering RNA and small molecule drugs, and preparation method and application thereof

PendingCN121944133Areduce generationImplement multi-link interventionAntipyreticHydroxy compound active ingredientsAntiinflammatory drugCYP2E1
The invention particularly relates to a glycosylated dendrimer for co-delivery of small interfering RNA (Ribonucleic Acid) and small molecular drugs as well as a preparation method and application of the glycosylated dendrimer. The nano platform provided by the invention is characterized in that an anti-inflammatory drug resveratrol (Res) and electrostatic adsorption small interfering RNA (si-Cp2e1) are loaded in a glycosylated dendrimer G5-Gal. The preparation method and the application comprise the following steps: preparation of G5-Gal, preparation of Res (at) G5-Gal, and preparation of Res (at) G5-Gal / si-Cp2e1. The preparation method is simple, the required raw materials are easy to obtain, the synthesis process is simple and convenient, separation and purification are easy, and the synthesized nano-drug has a liver targeting capability, can realize dual treatment of small molecule drug-small interfering RNA, and has a potential application prospect in the aspect of treatment of alcohol-related liver diseases.
Owner:SHANDONG FIRST MEDICAL UNIV & SHANDONG ACADEMY OF MEDICAL SCI

Preparation method of ZnFe2O4 aerogel for photo-thermal treatment of glioma

The invention belongs to the field of preparation processes of porous nano materials, and relates to a preparation method of ZnFe2O4 aerogel for glioma photothermal therapy. The preparation method comprises the following steps: firstly, preparing a ZnFe2O4 precursor by adopting a sol-gel method in combination with a supercritical drying process, and carrying out supercritical drying; then polyethylene glycol (PEG), EDC, NHS and FA are introduced for functional modification, and the ZnFe2O4 aerogel is prepared through high-temperature heat treatment. The method is simple in process, raw materials are environmentally friendly and easy to obtain, and the prepared ZnFe2O4 aerogel is high in specific surface area, low in density and good in photo-thermal performance. The research provides a new thought for targeted treatment of glioma, and promotes the development of nano medicine and material science.
Owner:NANJING TECH UNIV