Abstract: The invention relates to the technical field of gene treatment and nano targeted delivery, in particular to a siRNA delivery system compound as well as a preparation method and application thereof.

Abstract: The present invention relates to an oncolytic vaccinia virus and virus vectors for use in cancer therapy where in the virus comprises at least three vaccinia virus promoters which are positioned in the same orientation.

Abstract: The present invention discloses a modified interleukin 12 (nsIL-12) and its gene, recombinant vector and use in manufacture of a medicament for treatment of tumors. When the oncolytic adenovirus vector carrying the modified interleukin 12 gene targets tumor tissue, the modified interleukin 12 is continuously expressed at a low level and mainly distributed in the local tumor tissue, which improves the specificity to tumor cells and reduces the systemic toxicity of interleukin 12; the modified interleukin 12 shows stronger inhibitory effect on tumor growth in intraperitoneally disseminated tumors and orthotopic tumors, and has low toxicity. The modified interleukin 12 armed oncolytic viruses show excellent antitumor effects, with a significant regression of tumors and lower toxicity compared with the existing IL-12 armed virus.

Abstract: The present invention provides a composition comprising a phosphatidylinositol 3-kinase (PI3K) inhibitor and a modified virus for separate, subsequent or simultaneous use in the treatment of cancer, wherein the modified virus is for intravenous administration.

Abstract: The present invention discloses a modified interleukin 12 (nsIL-12) and its gene, recombinant vector and use in manufacture of a medicament for treatment of tumors. When the oncolytic adenovirus vector carrying the modified interleukin 12 gene targets tumor tissue, the modified interleukin 12 is continuously expressed at a low level and mainly distributed in the local tumor tissue, which improves the specificity to tumor cells and reduces the systemic toxicity of interleukin 12; the modified interleukin 12 shows stronger inhibitory effect on tumor growth in intraperitoneally disseminated tumors and orthotopic tumors, and has low toxicity. The modified interleukin 12 armed oncolytic viruses show excellent anti-tumor effects, with a significant regression of tumors and lower toxicity compared with the existing IL-12 armed virus.

Abstract: The present invention discloses a modified interleukin 12 (nsIL-12) and its gene, recombinant vector and use in manufacture of a medicament for treatment of tumors. When the oncolytic adenovirus vector carrying the modified interleukin 12 gene targets tumor tissue, the modified interleukin 12 is continuously expressed at a low level and mainly distributed in the local tumor tissue, which improves the specificity to tumor cells and reduces the systemic toxicity of interleukin 12; the modified interleukin 12 shows stronger inhibitory effect on tumor growth in intraperitoneally disseminated tumors and orthotopic tumors, and has low toxicity. The modified interleukin 12 armed oncolytic viruses show excellent anti-tumor effects, with a significant regression of tumors and lower toxicity compared with the existing IL-12 armed virus.

Abstract: The invention relates to the technical field of gene treatment and nano targeted delivery, in particular to a siRNA delivery system compound as well as a preparation method and application thereof.

Abstract: The present invention relates to a vaccinia virus vector comprising a nucleic acid sequence encoding a SCR1-, SCR2-, SCR3-, and SCR4-domain deleted B5R gene (B5R SCR1? SCR2?SCR3? SCR4?) inserted into the TK gene of the vaccinia virus. The invention also relates to compositions comprising the vaccinia virus vector, methods of treatment using the compositions, medical uses of the compositions and kits comprising the vaccinia virus vector. The invention also relates to a nucleic acid sequence encoding a SCR1-, SCR2-, SCR3-, and SCR4-domain deleted B5R gene (B5R SCR1? SCR2? SCR3? SCR4?) of vaccinia virus.

Abstract: A subgroup B recombinant human adenovirus vector Ad11-5EP (SEQ ID NO: 1), which is constructed by a method including: substituting a 365 bp fragment containing an enhancer and a promoter of an upstream coding sequence of Ad5 E1A (SEQ ID NO: 2) for a corresponding region of a serotype Ad11 (SEQ ID NO: 3) of a subgroup B human adenovirus vector by homologous recombination to construct the subgroup B recombinant human adenovirus vector Ad11-5EP (SEQ ID NO: 1).

Abstract: Chemokine receptor CCR4 and its ligands CCL17 and CCL22 are used as markers for the identification and/or staging of cancer. The level of CCR4, CCL17 and CCL22 are found to increase during malignant tumour progression. CCR4, CCL17 and CCL22 are used as markers for the stratification of cancer patients according to their suitability for treatment with anti-cancer agents. Information of diagnostic character is provided by measuring the level of one or more of CCR4, CCL17 and CCL22 present in a patient sample. Methods of treatment of cancer patients which agents that modulate the activity of CCR4, CCL17 and CCL22. Methods of screening for agents which modulate the biological activities of CCR4, CCL17 and CCL22 provide anti-cancer agents.

Abstract: The present invention provides a composition comprising a phosphatidylinositol 3-kinase (PI3K) inhibitor and a modified virus for separate, subsequent or simultaneous use in the treatment of cancer, wherein the modified virus is for intravenous administration.

Abstract: The present invention discloses a modified interleukin 12 (nsIL-12) and its gene, recombinant vector and use in manufacture of a medicament for treatment of tumors. When the oncolytic adenovirus vector carrying the modified interleukin 12 gene targets tumor tissue, the modified interleukin 12 is continuously expressed at a low level and mainly distributed in the local tumor tissue, which improves the specificity to tumor cells and reduces the systemic toxicity of interleukin 12; the modified interleukin 12 shows stronger inhibitory effect on tumor growth in intraperitoneally disseminated tumors and orthotopic tumors, and has low toxicity. The modified interleukin 12 armed oncolytic viruses show excellent antitumor effects, with a significant regression of tumors and lower toxicity compared with the existing IL-12 armed virus.

Abstract: A subgroup B recombinant human adenovirus vector Ad11-5EP (SEQ ID NO: 1), which is constructed by a method including: substituting a 365 bp fragment containing an enhancer and a promoter of an upstream coding sequence of Ad5 E1A (SEQ ID NO: 2) for a corresponding region of a serotype Ad11 (SEQ ID NO: 3) of a subgroup B human adenovirus vector by homologous recombination to construct the subgroup B recombinant human adenovirus vector Ad11-5EP (SEQ ID NO: 1).

Abstract: A method for reconstructing a replication-selective oncolytic adenovirus using a subgroup B recombinant human adenovirus vector Ad11-5EP. The method includes: 1) deleting E1A CR2 gene and/or anti-apoptotic gene E1B 21K that is necessary for viability of an adenovirus in normal cells but not necessary in tumor cells; 2) inserting a tumor-specific promoter to drive the expression of E1A gene; 3) re-directing a cellular tropism of Ad11-5EP according to receptors on a tumor cell surface; or 4) allowing adenovirus to selectively replicate in tumor cells.

Abstract: The present invention relates to an oncolytic vaccinia virus and virus vectors for use in cancer therapy where in the virus comprises at least three vaccinia virus promoters which are positioned in the same orientation.

Abstract: A method for reconstructing a replication-selective oncolytic adenovirus using a subgroup B recombinant human adenovirus vector Ad11-5EP. The method includes: 1) deleting E1A CR2 gene and/or anti-apoptotic gene E1B 21K that is necessary for viability of an adenovirus in normal cells but not necessary in tumor cells; 2) inserting a tumor-specific promoter to drive the expression of E1A gene; 3) re-directing a cellular tropism of Ad11-5EP according to receptors on a tumor cell surface; or 4) allowing adenovirus to selectively replicate in tumor cells.

Abstract: Chemokine receptor CCR4 and its ligands CCL17 and CCL22 are used as markers for the identification and/or staging of cancer. The level of CCR4, CCL17 and CCL22 are found to increase during malignant tumour progression. CCR4, CCL17 and CCL22 are used as markers for the stratification of cancer patients according to their suitability for treatment with anti-cancer agents. Information of diagnostic character is provided by measuring the level of one or more of CCR4, CCL17 and CCL22 present in a patient sample. Methods of treatment of cancer patients which agents that modulate the activity of CCR4, CCL17 and CCL22. Methods of screening for agents which modulate the biological activities of CCR4, CCL17 and CCL22 provide anti-cancer agents.

Abstract: A method for constructing a subgroup B recombinant human adenovirus vector Ad11-5EP. The method includes substituting a 365 bp fragment including an enhancer and a promoter of an upstream coding sequence of Ad5 E1A for a corresponding region of a serotype Ad11 of the subgroup B human adenovirus vector by homologous recombination to construct the subgroup B recombinant human adenovirus vector Ad11-5EP. A subgroup B recombinant human adenovirus vector Ad11-5EP constructed by the method and the use thereof for treatment of tumors are also provided.

Abstract: Chemokine receptor CCR4 and its ligands CCL1 7 and CCL22 are used as markers for the identification and/or staging of cancer. The level of CCR4, CCL17 and CCL22 are found to increase during malignant tumor progression. CCR4, CCL17 and CCL22 are used as markers for the stratification of cancer patients according to their suitability for treatment with anti-cancer agents. Information of diagnostic character is provided by measuring the level of one or more of CCR4, CCL 17 and CCL22 present in a patient sample. Methods of treatment of cancer patients which agents that modulate the activity of CCR4, CCL17 and CCL22. Methods of screening for agents which modulate the biological activities of CCR4, CCL 17 and CCL22 provide anti-cancer agents.

Abstract: A method for constructing a subgroup B recombinant human adenovirus vector Ad11-5EP. The method includes substituting a 365 bp fragment including an enhancer and a promoter of an upstream coding sequence of Ad5 E1A for a corresponding region of a serotype Ad11 of the subgroup B human adenovirus vector by homologous recombination to construct the subgroup B recombinant human adenovirus vector Ad11-5EP. A subgroup B recombinant human adenovirus vector Ad11-5EP constructed by the method and the use thereof for treatment of tumors are also provided.