The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Mar. 12, 2019
Sichuan Jiuzhang Biological Science and Technology Co., Ltd., Sichuan, CN;
Jie Zhang, Sichuan, CN;
Xiaoguang Chen, Sichuan, CN;
Huarong Yang, Sichuan, CN;
Wang Huang, Sichuan, CN;
Abstract
A pharmaceutical composition includes chlorogenic acid and coumaroylquinic acid. It can be used for preparing a reversing agent for tumor multi-drug resistance and a PD-1/PD-L1 inhibitor. The combined use of chlorogenic acid and coumaroylquinic acid exhibits a synergistic effect, effectuating a good reversing effect on the drug resistance of a tumor cell strain that produces multi-drug resistance for chemotherapeutic drugs and immunotherapeutic drugs, which may effectively inhibit PD-1/PD-L1 expression in drug-resistant B16 melanoma and drug-resistant Lewis lung cancer mice transplantation tumor tissue, and may effectively proliferate CD4+T and CD8+T cells in drug-resistant B16 melanoma mice and Lewis lung cancer mice.