國家衛生研究院 NHRI:Item 3990099045/15077
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    题名: Induction of immune responses and phosphatidylserine exposure by TLR9 activation results in a cooperative antitumor effect with a phosphatidylserine-targeting prodrug
    作者: Tseng, JC;Yang, JX;Lee, CY;Lo, CF;Liu, YL;Zhang, MM;Huang, LR;Liu, KJ;Wang, CC;Huang, CYF;Hong, YR;Tsou, LK;Chuang, TH
    贡献者: Immunology Research Center;Institute of Biotechnology and Pharmaceutical Research;Institute of Molecular and Genomic Medicine;National Institute of Cancer Research
    摘要: Head and neck cancer is a major cancer type, with high motility rates that reduce the quality of life of patients. Herein, we investigated the effectiveness and mechanism of a combination therapy involving TLR9 activator (CpG-2722) and phosphatidylserine (PS)-targeting prodrug of SN38 (BPRDP056) in a syngeneic orthotopic head and neck cancer animal model. The results showed a cooperative antitumor effect of CpG-2722 and BPRDP056 owing to their distinct and complementary antitumor functions. CpG-2722 induced antitumor immune responses, including dendritic cell maturation, cytokine production, and immune cell accumulation in tumors, whereas BPRDP056 directly exerted cytotoxicity toward cancer cells. We also discovered a novel function and mechanism of TLR9 activation, which increased PS exposure on cancer cells, thereby attracting more BPRDP056 to the tumor site for cancer cell killing. Killed cells expose more PS in tumor for BPRDP056 targeting. Tumor antigens released from the dead cells were taken up by antigen-presenting cells, which enhanced the CpG-272-promoted T cell-mediated tumor-killing effect. These form a positive feed-forward antitumor effect between the actions of CpG-2722 and BPRDP056. Thus, the study findings suggest a novel strategy of utilizing the PS-inducing function of TLR9 agonists to develop combinational cancer treatments using PS-targeting drugs.
    日期: 2023-05-11
    關聯: International Journal of Biological Sciences. 2023 May 11;19(9):2648-2662.
    Link to: http://dx.doi.org/10.7150/ijbs.81683
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1449-2288&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:001000273100003
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85163211424
    显示于类别:[莊宗顯] 期刊論文
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