840 results about "Tumor targeted" patented technology

Integration of costimulatory signaling domains within a tumor targeting chimeric antigen receptor (CAR), such as the IL13Rα2 specific IL13-zetakine (IL13ζ), enhances T cell-mediated responses against tumors even in the absence of expressed ligands for costimulatory receptors.

The present invention is directed to mutant Salmonella sp. having a genetically modified msbB gene in which the mutant Salmonella is capable of targeting solid tumors. The present invention further relates to the therapeutic use of the mutant Salmonella for growth inhibition and / or reduction in volume of solid tumors.

The present invention is based on the seminal discovery that targeted immunomodulatory antobodies and fusion proteins can counter act or reverse immune tolerance of cancer cells. Cancer cells are able to escape elimination by chemotherapeutic agents or tumor-targeted antobodies via specific immunosuppressive mechanisms in the tumor microenvironment and such ability of cancer cells is recognized as immune tolerance. Such immuno-suppressive mechanisms include immunosuppressive cytokines (for example, Transforming growth factor beta (TGF-β)) and regulatory T cells and / or immunosuppressive myeloid dendritic cells (DCs). By conteracting tumor-induced immune tolerance, the present invention provides effective compositions and methods for cancer treatment, optional in combination with another existing cancer treatment. The present invention provides strategies to counteract tumor-induced immune tolerance and enhance the antitumor efficacy of chemotherapy by activating and leveraging T cell-mediated adaptive antitumor immunity against resistant or disseminated cancer cells.

The present invention discloses an accurate radiation treatment planning system, which mainly comprises a three-dimensional medical image reconstruction module for reconstruction of human organs and the tumor target area, a three-dimensional dose calculation module of high accuracy photon beam, a three-dimensional dose calculation module of high accuracy electron beam, a conventional radiation plan designing module of the photon beam and the electron beam, a conformal radiation designing module of the photon beam and the electron beam, a reverse plan scheme designing module focused on the photon beam treatment. The present invention independently resolves the main and key technology of the radiation treatment planning system. The present invention develops a highly accurate algorithm and a fast precise optimal method of the three-dimensional dose distribution in photon beam and the electron beam, which distributes in non-uniform human medium. The present invention greatly improves accuracy of the embarking dose in tumor target area in patient body. Because the dose calculation speed has been improved dramatically, the advanced conformal radiation treatment planning system and the treatment planning system focused on radiation are feasible for clinical application. The present invention brings important benefits for improving the radiation treatment effect and improving life quality of the patient.

The present invention is based on the seminal discovery that targeted immunomodulatory antibodies and fusion proteins can counter act or reverse immune tolerance of cancer cells. Cancer cells are able to escape elimination by chemotherapeutic agents or tumor-targeted antibodies via specific immunosuppressive mechanisms in the tumor microenvironment and such ability of cancer cells is recognized as immune tolerance. Such immune suppressive mechanisms include immunosuppressive cytokines (for example, Transforming growth factor beta (TGF-β) and regulatory T cells and / or immunosuppressive myeloid dendritic cells (DCs). By counteracting tumor-induced immune tolerance, the present invention provides effective compositions and methods for cancer treatment, optional in combination with another existing cancer treatment. The present invention provides strategies to counteract tumor-induced immune tolerance and enhance the antitumor efficacy of chemotherapy by activating and leveraging T cell-mediated adaptive antitumor immunity against resistant or disseminated cancer cells.

The present invention relates to methods of treating mammals affected by, for example, a hyperproliferative disease such as cancer, by administering a tumor-targeted superantigen and a chemotherapeutic agent, whereby the administration of the tumor-targeted superantigen and chemotherapeutic agent reduce the antibody response and enhance the T cell response. The superantigen, wild-type or modified, is fused to a target-seeking moiety, such as an antibody or an antibody active fragment. The combined administration of a superantigen and a chemotherapeutic agent provides enhanced therapeutic effects in a treated animal.

The present invention relates to the field of adoptive immunotherapy. The invention provides methods for generating phenotypically defined, functional, and / or expandable T cells from pluripotent stem cells engineered through safe genetic modifications. The engineered cells may provide one or more of: 1) targeting a specific predetermined antigen expressed on the cell surface of a target cell in an HLA independent manner, 2) enhanced survival and functional potential 3) “off-the-shelf” T cells for administration to multiple recipients, eventually across immunogenic barriers, and / or 4) cytotoxic potential and anti-tumor activity.

The present invention relates to the combination therapy of specific tumor-targeted IL-2 variant immunocytokines with specific antibodies which bind human PD-L1.

The present invention relates to methods of treating mammals affected by, for example, a hyperproliferative disease such as cancer, by administering a tumor-targeted superantigen and a chemotherapeutic agent, whereby the administration of the tumor-targeted superantigen and chemotherapeutic agent reduce the antibody response and enhance the T cell response. The superantigen, wild-type or modified, is fused to a target-seeking moiety, such as an antibody or an antibody active fragment. The combined administration of a superantigen and a chemotherapeutic agent provides enhanced therapeutic effects in a treated animal.

The present application discloses the preparation and use of attenuated tumor-targeted bacteria vectors for the delivery of one or more primary effector molecule(s) to the site of a solid tumor. The primary effector molecule(s) of the invention is used in the methods of the invention to treat a solid tumor cancer such as a carcinoma, melanoma, lymphoma, or sarcoma. The invention relates to the surprising discovery that effector molecules, which may be toxic when administered systemically to a host, can be delivered locally to tumors by attenuated tumor-targeted bacteria with reduced toxicity to the host. The application also discloses to the delivery of one or more optional effector molecule(s) (termed secondary effector molecules) which may be delivered by the attenuated tumor-targeted bacteria in conjunction with the primary effector molecule(s).

The invention relates to a chimeric antigen receptor with stable antigen binding units. The chimeric antigen receptor comprises the extracellular antigen binding units, trans-membrane domains and intracellular co-stimulation signal domains. The antigen binding units can be stably expressed as compared with specific tumor targets and comprise heavy chains and light chains which are connected with one another by hinges of SEQ ID NO.2 (sequence identity number.2) amino acid sequence codes. The invention further relates to cells for expressing the receptor and application of the receptor.

A system and associated methods to determine an optimal radiation beam arrangement are provided. The system includes a computer planning apparatus which includes a treatment plan optimization computer having a memory and an input device in communication with the treatment plan optimization computer to provide user access to control functions of plan optimization software. An image gathering device is in communication with the treatment plan optimization computer through a communications network to provide an image slice of the tumor target volume and the non-target structure volume. The plan optimization software computationally obtains and then optimizes a proposed radiation beam arrangement iteratively based on constraints to form an optimized radiation beam arrangement. A conformal radiation therapy delivery device in communication with the treatment plan optimization computer through the communications network then applies the optimized radiation beam arrangement to the patient.

A system and associated methods to determine an optimal radiation beam arrangement are provided. The system includes a computer planning apparatus which includes a treatment plan optimization computer having a memory and an input device in communication with the treatment plan optimization computer to provide user access to control functions of plan optimization software. An image gathering device is in communication with the treatment plan optimization computer through a communications network to provide an image slice of the tumor target volume and the non-target structure volume. The plan optimization software computationally obtains and then optimizes a proposed radiation beam arrangement iteratively based on constraints to form an optimized radiation beam arrangement. A conformal radiation therapy delivery device in communication with the treatment plan optimization computer through the communications network then applies the optimized radiation beam arrangement to the patient.

The present invention relates to targeted delivery systems for delivering therapeutic agents to tumor. The invention further relates to methods of delivering a therapeutic agent to a tumor for the prevention and treatment of cancer by killing tumor cells and tumor-associated endothelial cells. In particular, the present invention provides a tumor-targeted drug delivery system comprising a NGR-containing molecule linked to a delivery vehicle encapsulating a therapeutic agent, preferably a drug, such as a cytotoxic agent or a chemotherapeutic agent. Specifically, the delivery systems of the present invention are capable of delivering an increased amount of therapeutic agent to a tumor as compared to other delivery systems. In particular, the delivery systems of the present invention are capable of accumulating a higher amount of therapeutic agent in a tumor, or in the vicinity of a tumor cell or tumor-supporting cell, resulting in exposure of the tumor cell and tumor-associated endothelial cell to therapeutic levels of the agent for a longer period of time as compared to other delivery systems. The present invention also describes pharmaceutical compositions comprising the delivery systems of the present invention. The present invention further relates to a tumor treatment comprising an increased amount of therapeutic agent delivered by the system of the present invention as compared to other delivery systems. The delivery systems and pharmaceutical compositions can be administered to a subject, preferably a human, alone or in combination, sequentially or simultaneously, with other prophylactic or therapeutic agents and / or anti-cancer treatments.

The invention discloses a tumor-targeted nanometer drug delivery system for cooperative chemotherapy and photodynamic therapy and a preparation method thereof. The drug delivery system is prepared from carboxymethyl chitosan, folate, a photosensitizer chlorine e6 and adriamycin, wherein the chlorine e6 and the folate are coupled to a carboxymethyl chitosan chain segment through an amido bond, and are loaded to polymer nanoparticles of the adriamycin through an ion exchange method. The nanometer material prepared by the method is high in yield, regular in shape and even in distribution. In-vivo and in-vitro experiments prove that the tumor targeting property of the nanometer preparation can be significantly improved by folate receptor mediation; enrichment on the tumor part is achieved and drug release is controlled. The photosensitizer is capable of effectively reversing the chemotherapy drug resistance and significantly inhibiting the growth of tumors after being irradiated by near-infrared light. Therefore, the related nanometer drug delivery system has good application prospect in the aspect of breast cancer treatment.

The invention provides a folic acid and polydopamine modified tumor targeted mesoporous silica nanoparticle and a preparation method and application thereof. The preparation method particularly comprises the following steps: (1) dissolving mesoporous silica and a chemical in a solvent, performing a full reaction, and performing separation; (2) adding mesoporous silica initial nano-particles obtained in the step (1) in a solution, adding dopamine hydrochloride, performing a full reaction, and performing separation; and (3) adding the dopamine hydrochloride coated mesoporous silica initial nano-particles loaded with the chemical in a weakly basic water solution, sequentially adding a reducing agent and polyethylene glycol modified sulfydryl grafted targeted ligand folic acid, performing a full reaction, then performing separation to obtain the folic acid and polydopamine modified tumor targeted mesoporous silica nanoparticle. The preparation method of the folic acid and polydopamine modified tumor targeted mesoporous silica nanoparticle is simple, and favorable tumor targeting ability, biocompatibility and biodegradability are achieved.

Methods and devices for improved targeting to a site in an organism, particularly to a tumor target site and for extracorporeal affinity adsorption, particularly in the treatment of cancer, atherosclerosis, including coronary artery disease, unstable angina, other acute ischemic syndromes and idiopathic dilated cardiac myopathy. In one aspect of the invention, a combination is provided comprising an extracorporeal device (1) having contained therein a binding compound (11) bound to a carrier (9), the binding compound having affinity for a binding partner, and a plurality of affinity binders (15), each of said affinity binders comprising a first portion (19) comprising the binding partner and a second portion (17) adapted to bind selectively with a species, the second portions of each of said affinity binders differing from each other.

The present invention is directed to mutant Salmonella sp. having a genetically modified msbB gene in which the mutant Salmonella is capable of targeting solid tumors. The invention is also directed to Salmonella sp. containing a genetically modified msbB gene as well as an genetic modification in a biosynthetic pathway gene such as the purI gene. The present invention further relates to the therapeutic use of the mutant Salmonella for growth inhibition and / or reduction in volume of solid tumors.

Devices, methods, and compositions for cancer therapy by administration of chemotherapeutic agents and / or inhibitors of membrane efflux systems to the vagina for topical and systemic tumor targets.

The invention relates to a somatostatin receptor-mediated tumor targeted pharmaceutical composition which adopts a targeted somatostatin receptor functional polypeptide and polyethylene glycol for simultaneously modifying a pharmaceutical carrier, and an anti-tumor drug or / and an anti-angiogenic drug is delivered to the tumor part, thereby enhancing the tumor treatment effect.

Devices, methods, and compositions for cancer therapy by administration of chemotherapeutic agents and / or inhibitors of membrane efflux systems to the vagina for topical and systemic tumor targets.

The present invention is a thorax phantom that enables simulation of tumor motion within a tissue equivalent material. The system consists of a tissue equivalent epoxy phantom representing a 15 cm axial section of the human thorax that includes simplified spine and lung anatomies. Within the phantom are thru rods of similar tissue density. The rods are attached to a computer-controlled actuator that facilitates both linear and rotational motion of the rods within the phantom. A plurality of tumor targets and radiation detectors can be placed within the rods at various locations thereby enabling the simulation of respiratory and cardiac induced tumor motions within the phantom and assessment of the effects of these motions on image acquisitions, treatment planning and radiation treatment delivery.

The invention relates to a targeted drug-bearing ultrasonic microbubble comprising a lipide dimolecular layer outer shell, targeted polypeptide fixed at the outer side of the lipide dimolecular layer outer shell, a biological inert gas wrapped in the lipide dimolecular layer outer shell and medicament granules dispersed in the lipide dimolecular layer outer shell. The targeted polypeptide is a polypeptide or protein derivative containing an amino acid sequence CGNKRTRGC. By connecting the polypeptide or protein derivative containing a tumor targeted peptide sequence outside the lipide dimolecular layer outer shell, the obtained targeted drug-bearing ultrasonic microbubble can target the lymph vessels and the tumor cells of a tumor, can detect and diagnose the generation, the development and the curative effect on the tumor in real time through high-frequency ultrasonic imaging and can crush the microbubble through low-frequency ultrasound to release the medicament granules so as to achieve the aim of controllably and targetedly releasing the medicament, thereby having extremely important meanings to the prevention, diagnose and treatment of the tumor. In addition, the invention also relates to a preparation method of the targeted drug-bearing ultrasonic microbubble.

The present invention is directed to mutant Salmonella sp. having a genetically modified msbB gene in which the mutant Salmonella is capable of targeting solid tumors. The invention is also directed to Salmonella sp. containing a genetically modified msbB gene as well as an genetic modification in a biosynthetic pathway gene such as the purl gene. The present invention further relates to the therapeutic use of the mutant Salmonella for growth inhibition and / or reduction in volume of solid tumors.

The invention relates to a folate-targeted reduction sensitive drug-carrying polymer nano-micelle as well as a preparation method and application thereof. The delivery carrier is prepared by taking anamphiphilic triblock copolymer PCL-ss-PEG-ss-PCL as a material, and a chemotherapeutic drug adriamycin amycin and a photosensitizer indocyanine green are entrapped in a hydrophobic core of the micelle. Besides, phospholipid DSPE-PEG-NH2 with an active group is introduced into the preparation process, the DSPE end of the phospholipid has strong hydrophobic property and is inserted into the hydrophobic PCL core of the polymer micelle, the flexible hydrophilic PEG long chain exists on the outer surface of the micelle, FA with a targeting effect is connected to a PEG active distal end of the surface of the polymer micelle, and functions of active tumor targeting and reduction response drug release are integrated. The folate-targeted reduction sensitive drug-carrying polymer nano-micelle disclosed by the invention has the advantages of being small in particle size, high in dispersion property, high in drug loading capacity and encapsulation efficiency and excellent in photothermal conversion effect, can realize reduced trigger drug release, fluorescence imaging of tumor sites, tumor targeting drug delivery and chemotherapy-photothermal combination therapy and improve the tumor inhibition effect, and has wide application prospects in the targeted combination therapy aspect of tumors.

The invention relates to a pH / reduction dual-sensitive multifunctional nano-micelle for tumor chemotherapy and photothermal combined therapy and application of the pH / reduction dual-sensitive multifunctional nano-micelle. The pH / reduction dual-sensitive multifunctional nano-micelle is characterized in that a PCL-acetal-PEG polymer with pH sensitive characteristic, a PCL-ss-PEG-ss-PCL polymer withreduction sensitive characteristic and a phospholipid DSPE-PEG-NH2 with an active group are used as raw materials and are blended to prepare a pH / reduction intelligent responsive polymer nano-micelleas a carrier; a chemotherapeutic drug and a photosensitizer coat a hydrophobic core of the micelle; a casing is made of hydrophilic PEG and has the characteristic of long circulation and space stability; a folic acid targeting group is modified on the surface of the micelle by a covalent bond; the drug loading capacity is 4 to 10 percent, and the mass ratio of the chemotherapeutic drug to the photosensitizer is 0.5 to 2; the particle size is smaller than 200 nm. The pH / reduction dual-sensitive multifunctional nano-micelle disclosed by the invention has the advantages of good dispersity, smallparticle size, better photothermal conversion effect and high drug loading capacity and encapsulation efficiency; the effect of improving tumor suppression by tumor targeted administration, fluorescence imaging of a tumor site, pH / reduction triggered drug release and chemotherapy and photothermal combined therapy can be realized; the pH / reduction dual-sensitive multifunctional nano-micelle has a broad clinical application prospect in combined targeting therapy of tumors.

The invention relates to a hyaluronic-acid-based double-targeting nano-composite medicament and a preparation method thereof. Hydrophobic group ursodeoxycholic acid is included in a hyaluronic acid nano-polymer structure and can form an amphipathic polymer and automatically generate micelles in an aqueous solution, and polyethylene glycol can be introduced into the micelles to improve the dispersity and stability of a composite. An anti-tumor medicament can enter a nano-carrier through electrostatic adsorption or physical inclusion to generate a nano-medicament composite, wherein the nano-medicament composite is selectively concentrated in a tumor cell under an active targeting effect of hyaluronic acid and a surface CD44 receptor of a tumor cell, and promotes a tumor tissue to absorb the nano medicament-carrying composite by using a passive osmotic accumulation effect (EPR) at the same time. After an anti-tumor medicament is wrapped by a modified hyaluronic acid polymer, the anti-tumor medicament has the advantages of improving the bioavailability of the medicament, improving the targeting property, reducing the toxic and side effects, prolonging the half-life period of the medicament, being stably stored and the like, so that the tumor targeting therapy efficiency is improved in many ways.

The present invention discloses primers, probes, a detection system and a kit for one time detection of lung cancer multiple genes, wherein the primers, the probes, and the distribution way for detecting 25 EGFR gene mutations, 7 KRAS gene mutations, 6 BRAF gene mutations, 9 NRAS gene mutations, 5 HER2 gene mutations, 2 PIK3CA gene mutations, 5 fusion genes of ALK5, 13 fusion genes of ROS1, and 6 fusion genes of RET are provided. According to the present invention, the detection kit adopts the 12 linking PCR reaction strip design, each 12 linking PCR strip detects multiple genes of a sample, and the corresponding fusion detection reagents and the internal control reagents are filled in the pipes 1-4 of the 12 linking PCR strip; and with the primers, the probes, the detection system and the kit, the one-time detection of the 24 fusions and the 54 mutations of the lung cancer can be achieved, such that the detection time is substantially shortened, the sensitivity is high, the specificity is strong, the operation is simple and rapid, and the reference for selection of tumor targeting drug therapy on lung cancer patients can be provided for clinician.