79 results about "Plga nanoparticles" patented technology

The invention relates to the technical field of medicine, and discloses an artificial exosome and application thereof in drug delivery, the artificial exosome is prepared into an oil phase based on PLGA and DOTAP, and a water phase based on OCT4 protein and siTrim28; mixing the two phases to obtain a primary emulsion, and adding a PVA aqueous solution to obtain a double emulsion; stirring the double emulsion and volatilizing the solvent to form an emulsified solution, and centrifuging to obtain PLGA nanoparticles; the lipid mixture is prepared from lipid, DPPE-PEG2000, alpha-tocopherol and alpha-lactalbumin, and a lipid film is formed after a solvent is evaporated; the preparation method comprises the following steps: mixing PLGA nanoparticles, a lipid film and membrane protein, uniformly mixing and heating to obtain a film-coated solution, and finally extruding through a cellulose acetate film to obtain the artificial exosome. The artificial exosome disclosed by the invention combines the stability of the PLGA nanoparticles and the biocompatibility of the lipid membrane, and provides new possibility for a drug delivery system.

The invention belongs to the technical field of biological materials, and particularly relates to nano composite hydrogel as well as a preparation method and application thereof. In the preparation process of the hydrogel, preparation of gelatin hydrazide and preparation of pullulan oxidation are sequentially completed, then preparation of active component loaded PLGA nanoparticles and self-assembly coating with metal-polyphenol are completed, and finally, the metal-polyphenol coated PLGA nanoparticles are mixed with gelatin hydrazide and pullulan oxidation to form gel in situ. The hydrogel has the characteristics of injectability, self-healing, wet adhesion and the like, the metal-polyphenol layer has the effects of resisting inflammation, resisting oxidation and promoting angiogenesis and generates photo-thermal response to near infrared rays, on-demand controllable release of the drug-loaded nanoparticles is achieved, the composite hydrogel can improve the wound surface microenvironment, promote angiogenesis and inhibit inflammation and scar formation, and the drug-loaded nanoparticles can be applied to wound healing. The ointment is suitable for burns, scalds and various complex wounds.

The invention discloses a lipid nanoparticle, a targeted lipid nanoparticle, and a preparation method and application thereof. The lipid nanoparticle has a core-shell structure, the core is formed by PLGA nanoparticles containing drug molecules, and the shell is formed by raw materials including phospholipid, cholesterol and a modification material; wherein the PLGA nanoparticles containing the drug molecules are formed by raw materials comprising PLGA and the drug molecules; the mass ratio of the PLGA to the phospholipid is (1-5): 1; the mass ratio of the phospholipid to the cholesterol is (3-10): 1, and the mass ratio of the phospholipid to the modification material is (3-10): 1; the drug molecules are selected from one or more of insoluble drugs, water-soluble drugs, genes and proteins; and the modification material is PEG-DSPE (Polyethylene Glycol Distearoyl The hardness of the lipid nanoparticles can be regulated and controlled, and cellular uptake can be improved by regulating and controlling the hardness; the targeted lipid nanoparticles can better improve cellular uptake, promote intestinal epithelial cell absorption and improve oral curative effect.

The invention relates to a targeted supramolecular BAPs-PLGA nanoparticle as well as a preparation method and an application of the targeted supramolecular BAPs-PLGA nanoparticle. The nanoparticle is prepared through a microfluidic technology and an ultrasonic emulsification technology, PLGA is used as an oil phase, supramolecular BAPs is used as a water phase to form a primary emulsion, and then the primary emulsion and a water phase containing an emulsifier and supramolecular RGD form a multiple emulsion. According to the technology, the BAPs and the eutectic solvent (TG-DES) are combined to form a stable supramolecular structure, so that the solubility and the stability of the BAPs are remarkably improved. The supramolecular RGD is attached to the surface of the nanoparticle and endows the nanoparticle with targeting property, and the cellular uptake ability of the BAPs can be improved through NRP-1 mediated transendocytosis. According to the invention, the bioavailability of the BAPs can be improved, and a new solution is provided for a drug delivery system and skin penetration enhancement. In addition, the preparation method of the nanoparticles is simple, controllable in process, suitable for industrial production and wide in application prospect.

The invention discloses neutral homogeneous lycium barbarum polysaccharide as well as a preparation method and application thereof. Through systematic structure characterization, it is clarified for the first time that the polysaccharide NLBPE1 is atypical arabinogalactan with 1, 5-alpha-L-arabinose as a bridging unit, and the polysaccharide NLBPE1 has a uniform molecular weight and a definite branched chain topological structure. The NLBPE1 serving as an adjuvant and an antigen are jointly entrapped in various delivery systems (such as PLGA nanoparticles, lipidosome, hydrogel and the like) to form the vaccine composition, so that the immunogenicity of the vaccine can be remarkably improved, and the antigen-specific T cell response can be enhanced. The invention provides an application scheme of the polysaccharide as a vaccine adjuvant in tumor immunotherapy and tumor prevention, and particularly shows a remarkable synergistic anticancer effect when the polysaccharide is combined with an immune checkpoint inhibitor for use. The polysaccharide has a clear structure, good biocompatibility and remarkable immunological enhancement activity, and has a wide application prospect of tumor vaccine adjuvants.

The invention provides a POCD treatment medicine composition with dendrobine delivered by a nano-carrier and application, and belongs to the technical field of medicine. The composition consists of dendrobine, a nano-carrier material and a stabilizer, wherein a nano-carrier is PLGA (poly (lactic-co-glycolic acid)) nanoparticles or lipidosome. The particle size of the composition is 50-150nm, the polydispersity index is less than 0.3, and the loading capacity of dendrobine is 5-15%. The invention also provides two preparation methods of the composition. The PLGA nanoparticles are prepared by adopting an emulsification-solvent evaporation method; the liposome is prepared by adopting a film hydration-ultrasonic extrusion method, and each process parameter is specifically limited. The pharmaceutical composition can significantly improve the brain targeting and bioavailability of dendrobine, and can be used for preparing drugs for preventing or treating postoperative cognitive impairment (POCD), and the administration route can be intravenous injection or nasal administration.

The present invention relates to the discovery of novel PLGA particles comprising a polypeptide adsorbed on the surface of the PLGA particles. In certain embodiments, the PLGA particles can be used to administer the polypeptide to a patient in need thereof. As compared to polypeptide-delivery formulations known in the art, the present invention demonstrates a higher relative polypeptide loading capacity. In certain embodiments, the polypeptide adsorbed on the surface of the PLGA nanoparticles does not denature or deform upon adsorption.

To provide novel therapeutic compositions for systemic administration (e.g., oral administration) and long-term release of terpenoids and cannabinoids, and methods of making and using the therapeutic compositions.SOLUTION: The present invention provides a terpenoid-encapsulating PLGA nanoparticle, comprising a PLGA nanoparticle composed of copolymer poly(lactic-co-glycolic acid) and a first terpenoid encapsulated in the PLGA nanoparticle. The nanoparticle further encapsulates a second compound composed of (i) a cannabinoid or (ii) a second terpenoid other than the first terpenoid.SELECTED DRAWING: None

The invention discloses an active oxygen response oxygen self-production nanometer material for promoting vascular regeneration and a preparation method thereof, and relates to the technical field of biomedical materials. The nano-material comprises self-oxygen-producing PLGA nano-particles and a macrophage membrane, wherein the self-oxygen-producing PLGA nano-particles simultaneously load a mesenchymal stem cell conditioned culture medium which is pretreated under a preset low-oxygen condition and catalase with an active oxygen response characteristic, and the surface of the self-oxygen-producing PLGA nano-particles is coated with the macrophage membrane. The invention provides a synergistic treatment strategy for promoting revascularization and relieving oxygen deficit of a focus part, and solves the problem of slow release speed of a targeted nano-material loaded drug for promoting revascularization.

The present invention provides an iridium complex and its preparation and application of PLGA nanoparticles, belonging to the field of biomedicine technology. The iridium complex provided by the present invention can enter tumor cells, inhibit tumor cell proliferation and migration, and cause mitochondrial dysfunction leading to tumor cell death. The present invention also provides an iridium complex PLGA nanoparticle, which solves the problems of poor water solubility and high toxicity of the complex, while improving the bioavailability of the iridium complex, making the iridium complex drugable, and providing a new solution for the treatment of breast cancer. In addition, the iridium complex PLGA nanoparticles provided by the present invention can significantly inhibit cell growth, migration, etc., have the effect of reducing toxicity and increasing efficacy, do not change the mechanism of action of the complex, and promote cell apoptosis and cell ferroptosis caused by the complex.

The application discloses a kind of Man-PFH-ICG@PLGA nanoparticles and preparation method and application thereof, belong to composite material preparation technical field.The application uses PLGA as carrier, using polylactic acid-glycolic acid (PLGA) nanoparticles (NPs) to mark the surface of it with mannose, and ICG and oxygen-carrying PFH are embedded therein, the obtained Man-PFH-ICG@PLGA nanoparticles have excellent targeting effect on the overexpression of mannose receptor on the surface of tumor cells, significantly promote the effective endocytosis of cells in vitro and tumor enrichment in vivo, directly relieve the hypoxic environment of tumor;It can also supplement oxygen by endogenous, to activate the TRPA1 channel overexpressed on the surface of tumor cells by ROS generated by cells, so as to inhibit cell respiration, reduce oxygen consumption, indirectly relieve the hypoxic environment of tumor, effectively inhibit the growth of tumor cells, and provide a new idea for clinical exploration of antitumor therapy.

The application discloses a kind of Baicalein-loaded mPEG-PLGA nanoparticles based on tumor microenvironment and its preparation method and application.The method is: ultrasonic dispersion preparation Baicalein uniform solution;Then mPEG-PLGA is prepared;Emulsion evaporation method is prepared Baicalein-loaded mPEG-PLGA nanoparticles (PMs-Ba);The nanoparticles can be accumulated in tumor site, improve tumor microenvironment, so as to enhance the sensitivity of breast cancer to chemotherapeutic drugs.The method is simple to operate, provides a new idea for traditional Chinese medicine to be used as adjuvant therapy, and the method has great application potential in early cancer clinical treatment.

The application relates to preparation and application of a giant Eimeria nanosubunit vaccine. The nanosubunit vaccine PLGA-rEmLPL is prepared by coating E. maxima Treg-induced molecule EmLPL recombinant protein (rEmLPL) with PLGA nanoparticles. The immunoprotective effects of the subunit vaccine rEmLPL and the nanosubunit vaccine PLGA-rEmLPL are evaluated through animal immunoprotection tests, and the results show that both the vaccines can produce good immunoprotective effects on E. maxima infection. After the recombinant protein subunit vaccine rEmLPL is coated with the PLGA nanoparticles, the immunoprotective effect of the nanosubunit vaccine PLGA-rEmLPL on animals is improved compared with that of the subunit vaccine rEmLPL.

The invention discloses a preparation method and application of PLGA (poly (lactic-co-glycolic acid))-curcumin nanoparticles. The invention relates to the technical field of biomedicine, and the preparation method comprises the following steps: taking a polyvinyl alcohol (PVA) aqueous solution as a water phase and a dichloromethane solution of polylactic acid-glycolic acid copolymer (PLGA) and curcumin (Cur) as an oil phase, preparing curcumin-entrapped PLGA nanoparticles (PLGA at Cur NPs) by adopting a water-in-oil-in-water double emulsion method, and the prepared PLGA nanoparticles are spherical, uniform in particle size and uniform in particle size. The carrier PLGA has good biocompatibility and biodegradability and is non-toxic and non-irritant, and a surfactant does not need to be added in the preparation process of the nanoparticles, so that the toxicity is further reduced.

Provided herein are terpenoid- and cannabinoid-encapsulating PLGA nanoparticles and pharmaceutical compositions comprising the nanoparticles. Further provided are methods of making and using the terpenoid- and cannabinoid-encapsulating PLGA nanoparticles for therapeutic purposes.

The invention relates to the technical field of biomedical engineering, and discloses a function-integrated drug-loading end component for an invasive neural electrode, a preparation method and the invasive neural electrode. The end component is integrally formed by a medicine-carrying degradable material through a mold and is configured to bear a puncture structure and a long-term medicine slow-release carrier at the same time. The drug-loaded degradable material comprises a compound system of drug-loaded PLGA nanoparticles and polylactic acid, the polylactic acid serves as a continuous phase to provide mechanical support, and the drug-loaded PLGA nanoparticles serve as a filling phase to provide a slow release function; a gradient pore structure formed by gradient volatilization of a double-solvent system is arranged in the end component; and the end component is induced by an interface solvent to form molecular-level fusion connection with the electrode substrate. The risk that a coating falls off due to interface failure in a traditional separation type design is fundamentally eliminated, collaborative optimization of the puncture performance and the slow release performance is achieved, and the end component is endowed with the multi-stage drug release characteristic matched with the neuroinflammatory reaction stage.

The invention discloses a nano vaccine for treating HPV (human papilloma virus) infection related cervical lesions as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. In order to solve the problem that the response rate of an existing cervical lesion treatment vaccine does not meet clinical requirements, the hybrid membrane with enhanced immunogenicity and improved safety is prepared by applying a membrane fusion technology and combining an autologous tumor cell membrane and an escherichia coli cytoplasmic membrane; meanwhile, PLGA nano particles loaded with HPV16 E5 / E6 / E7 specific CTL epitope long peptide are used as a delivery carrier, and the HM-NPs-LP nano vaccine co-delivering the hybrid membrane and the HPV16 specific antigen peptide is developed. According to the nano vaccine, tumor cells and HPV16 E5 / E6 / E7 specific CTL epitope long peptide are taken as antigens for immunotherapy, dual immune activation of broad spectrum and specific antigens can be realized, personalized multi-effect treatment capacity for HPV infection related cervical diseases is exerted, targeted killing of HPV infection and pathological cells is enhanced, pathological relapse is prevented, and the nano vaccine has good clinical application prospects. And a new strategy is provided for individualized precise immunotherapy.

One technical problem to be solved by the present invention is to provide a miRNA trapping method with high yield. The technical problem is solved by: a method for trapping miRNA from a liquid sample collected from a subject, the method comprising: bringing the liquid sample into contact with a cationic polymer-modified PLGA nanoparticle to which a trapping probe is bound; and a step for recovering miRNA from the cationic polymer-modified PLGA nanoparticles to which the capture probe has been bound after being brought into contact with the liquid sample, a cationic polymer-modified PLGA nanoparticle to which a capture probe is bound, the cationic polymer-modified PLGA nanoparticle comprising a core of a PLGA-containing nanoparticle, a coating layer covering the surface of the core and containing a cationic polymer, and a capture probe bound to the coating layer, the capture probe being an oligonucleotide.

The present invention relates to a polymer system with a nano-in-micro architecture (fucoidan micromatrix with PLGA nanoparticles incorporated therein) and finds application as a system for controlled delivery of low molecular weight water-soluble medicinal substances (e.g. galantamine hydrobromide, benzydamine hydrochloride, betahistine hydrochloride, etc.). The system includes polylactic-coglycolic acid (PLGA) nanoparticles in a fucoidan matrix, with the PLGA content being from 1% to 10% and fucoidan content being from 90% to 99% in the form of a fucoidan matrix with 100% PLGA nanoparticles incorporated therein, with the microparticles having an average diameter of 2 μm to 10 μm. The polymer system for controlled release of low molecular weight water-soluble drugs, when loaded with low molecular weight water soluble drugs such as galantamine, benzydamine, doxylamine, contains polylactic-co-glycolic acid from 1% to 10% and fucoidan from 90% to 99% in the form of a fucoidan matrix with PLGA nanoparticles incorporated therein, in the form of a fucoidan matrix with PLGA nanoparticles incorporated therein from 94% to 99% and a low molecular weight water-soluble drug from 1% to 6%, wherein the microparticles have an average diameter of 2 μm to 10 μm.

A novel biomimetic nano-sphere M@P-WI includes PLGA nanoparticles and the membrane of breast cancer EO771 cells. The PLGA nanoparticles are encapsulated within the membrane of breast cancer EO771 cells, and IR780 and DDR2 inhibitor WRG-28 are embedded in the PLGA nanoparticles. A method for preparing and applying the novel biomimetic nano-sphere M@P-WI is also provided. The method utilizes the aforementioned novel biomimetic nano-sphere M@P-WI, to trigger the conversion of light into heat energy upon near-infrared laser irradiation. This “burns” the tumor and induces specific immune responses within the body, inhibiting tumor recurrence and metastasis. Under the action of WRG-28, it promotes apoptosis of cancer-associated fibroblasts (CAF), reduces the remodeling of tumor extracellular matrix microenvironment, enhances the distribution of nanomaterials within the tumor, and restricts the invasiveness of breast cancer cells. With laser irradiation, the photosensitizer exhibits its maximum efficacy, achieving complete elimination of TNBC rich in extracellular matrix.

The application discloses a bovine viral diarrhea virus inactivated vaccine containing ginsenoside Rb1 / Rg5-PLGA nanoparticles, and relates to the technical field of biological medicines.The bovine viral diarrhea virus (BVDV) inactivated vaccine comprises inactivated bovine viral diarrhea virus and a vaccine adjuvant; the vaccine adjuvant comprises ginsenoside Rb1 / Rg5-PLGA nanoparticles.The application effectively enhances the application effect of the vaccine by combining the use of PLGA, ginsenoside Rb1 and Rg5, and can cause better humoral immunity and cellular immunity levels, thereby laying a foundation for the development of the BVDV inactivated vaccine for deer.

This paper proposes a tumor-associated fibroblast-targeted nanosystem, consisting of PLGA nanoparticles co-encapsulating anti-fibrotic and anti-aging drugs as the core, and a 4T1 cell membrane expressing a specific FAP chimeric antigen receptor as the biomimetic shell. The present invention constructs FAP-CAR-4T1 cells by embedding FAP scFv onto 4T1 cells. FAP-CAR-CM@PLGA NPs co-encapsulate anti-fibrotic and anti-aging drugs, enabling FAP-CAR-CM@PLGA-AB NPs to target CAFs and SC CAFs, improving radiotherapy resistance and achieving a dual clearance effect while simultaneously relieving the tumor's immunosuppressive microenvironment, effectively reducing breast cancer recurrence after radiotherapy.

This invention discloses a brain-targeting neutrophil membrane-encapsulated tanshinone IIa PLGA nanoparticle formulation, its preparation method, and its uses. The brain-targeting tanshinone IIa nanoparticle formulation, Neu-Tan-IIa@PLGA, is characterized by comprising a PLGA-loaded tanshinone IIa nanoparticle core (Tan-IIa@PLGA) and an outer neutrophil membrane coating. This invention effectively overcomes the problems of poor water solubility, low oral bioavailability, and difficulty in crossing the blood-brain barrier associated with tanshinone IIa. This invention provides a tanshinone IIa with strong targeting and high drug stability, enabling delivery to lesions in ischemic brain regions and improving the safety and efficacy of stroke treatment.

The invention discloses a novel bionic nanosphere M (at) P-WI, the novel bionic nanosphere M (at) P-WI comprises PLGA nanoparticles and a breast cancer 4T1 cell membrane, the PLGA nanoparticles are coated in the breast cancer 4T1 cell membrane, and IR780 and a DDR2 inhibitor WRG-28 are embedded in the PLGA nanoparticles. The invention further discloses a preparation method and application of the novel bionic nanosphere M (at) P-WI. The novel bionic nanosphere M (at) P-WI is adopted, after near-infrared laser irradiation, light is triggered to be converted into heat energy to burn a tumor, in-vivo specific immune response is induced to inhibit tumor recurrence and metastasis, under the action of WRG-28, CAF apoptosis is promoted, microenvironment remodeling of a tumor epimatrix is reduced, distribution of a nano material in the tumor is improved, and the tumor tumor tumor healing effect is improved. In addition, invasiveness of breast cancer cells is limited, under irradiation of laser, the photosensitizer exerts the maximum titer, and TNBC rich in exomatrices is thoroughly burnt out.

The invention discloses an aluminum adjuvant coated PLGA (poly (lactic-co-glycolic acid)) nanoparticle and application thereof, a nanoscale aluminum adjuvant is prepared firstly, and then the aluminum adjuvant coated PLGA nanoparticle is prepared. The prepared nano-aluminum-coated PLGA nanoparticles can effectively activate antigen presenting cells and promote antigen presentation, so that humoral immunity and cellular immunity processes of an organism are activated at the same time, the tumor immunotherapy effect is enhanced, and the nano-aluminum-coated PLGA nanoparticles have high clinical use value.

The invention relates to the field of preparation of targeted drug carriers, and provides a preparation method of a targeted drug delivery polypeptide nano-carrier, DAG is used as a targeted modification molecule, PEG-PLGA nanoparticles are modified, a novel polypeptide carrier is synthesized, a solid-state synthesis method is selected in the preparation process, and the targeted drug delivery polypeptide nano-carrier is obtained. Carboxyl PEG-PLGA is directionally introduced in the process of automatically synthesizing the DAG polypeptide. According to the preparation method of the PEG-PLGA modified DAG cyclopeptide, amino acid is coupled on resin containing activated amino groups, then a Fomc protecting group of main chain amino groups is removed, and corresponding to different amino acid repeating processes, straight-chain polypeptide with protected side chain amino groups is synthesized, so that the prepared PEG-PLGA modified DAG cyclopeptide is high in purity, and the material has the advantages of good targeting property, high drug transport efficiency and short drug release period; popularization and application are facilitated.

The invention discloses a phototherapy nano system for removing candida and lactobacillus, a preparation method of the phototherapy nano system and application of the phototherapy nano system in preparation of drugs for treating vulvovaginal candidiasis. The phototherapy nano system comprises cell membranes with GPIb, GPIIb / IIIa and gC1q-R / P32 receptors; polylactic acid-glycolic acid copolymer (PLGA) nanoparticles wrapped by a cell membrane; a photosensitizer is embedded on the surface of the cell membrane; the preparation method comprises the following steps: extracting cell membrane PM of human platelets; the method comprises the following steps: premixing an IR780 photosensitizer and a cell membrane PM, and embedding IR780 into the cell membrane PM through ultrasonic under a water bath condition to obtain PM (IR); the preparation method comprises the following steps: carrying out water bath ultrasonic treatment on PM (IR) and polylactic acid-glycolic acid copolymer PLGA nanoparticles, and coating the PM (IR) on the polylactic acid-glycolic acid copolymer PLGA nanoparticles to obtain the PM (IR)-NP bionic nanoparticles. The problems of high recurrence rate, drug tolerance and vaginal flora ecological imbalance in the treatment of the recurrent vulvovaginal candidiasis can be relieved.

The application relates to the field of biomaterials and regenerative medicine, in particular to a preparation method and application of fibronectin and collagen protein-loaded PLGA nanoparticles, wherein the preparation method adopts a complex emulsion solvent evaporation method, a buffer solution containing fibronectin, collagen protein and trehalose is used as an inner water phase, a dichloromethane solution of PLGA is used as an oil phase, and a polyvinyl alcohol and trehalose-containing aqueous solution is used as an outer water phase; and the nanoparticles are prepared through emulsification, high-pressure homogenization, dialysis and freeze-drying. The method has the beneficial effects of stable process and effective protection of protein activity. The obtained nanoparticles have uniform particle sizes (100-200 nm), and can realize synergistic controllable release of double proteins. The product organically combines the physical filling support function of PLGA and the biological repair function of active factors, realizes the integration of "filling-regeneration", can significantly reduce the risk of inflammation, and can be safely applied to soft tissue filling, wrinkle improvement and skin wound repair in the field of medical cosmetology.

One of the problems addressed by the present invention is to provide a novel method for capturing a nucleotide chain. The problem is solved by a method for capturing a nucleotide chain from a liquid specimen collected from a subject, the method comprising bringing a liquid specimen into contact with capture probe-bound cationic polymer-modified PLGA nanoparticles and recovering a nucleotide chain from the capture probe-bound cationic polymer-modified PLGA nanoparticles that have been brought into contact with the liquid specimen. The capture probe-bound cationic polymer-modified PLGA nanoparticles each include a nanoparticle core containing PLGA, a coating layer containing a cationic polymer and covering the surface of the core, and a capture probe bound to the coating layer, wherein the capture probe is an oligonucleotide.

The invention relates to the technical field of biomedical engineering, in particular to Pickering emulsion as well as a preparation method and application thereof. According to the invention, lentinan is selected as an immune agonist and is combined with PLGA, so that the immunocompetence of PLGA as an adjuvant is enhanced; the PLGA-coated lentinan can prevent the antigen from being directly exposed in an organic solvent to influence the activity of the antigen; compared with PLGA nanoparticles, the Pickering emulsion has a larger specific surface area and can adsorb more antigens; the Pickering emulsion has good fluidity and can increase the interaction between the PLGA nanoparticles and cell membranes, when the PLGA nanoparticles are in contact with antigen presenting cells (APCs), a large number of antigens are absorbed by the APCs, and the activated APCs can carry a large number of nanoparticles to enter lymph nodes, so that the Pickering emulsion has good lymph node targeting property. Upon uptake of a large number of antigens, the immune cells induce strong cellular or humoral immune responses in various ways.