氨基酸代谢在肿瘤微环境及免疫治疗中作用的研究进展

来源 :中国肿瘤生物治疗杂志 | 被引量 : 0次 | 上传用户:hot8391
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氨基酸是人体主要营养物质,更是肿瘤微环境(TME)中免疫细胞和肿瘤细胞重要的代谢物质,不同氨基酸在TME中发挥的作用不尽相同.免疫细胞可以利用氨基酸进行增殖、活化和发挥抗肿瘤作用,而肿瘤细胞同样可以将氨基酸用于其增殖、侵袭和免疫逃逸,氨基酸在两者之间的代谢平衡直接影响TME中的免疫状态.在某些条件的作用下,肿瘤细胞改变TME中氨基酸代谢平衡,重新分配后的氨基酸向肿瘤细胞倾斜,重塑后的TME将更适合肿瘤细胞生长.免疫治疗在调节氨基酸代谢中同样发挥作用.免疫检查点负性调控分子抑制效应T细胞氨基酸摄入以抑制其新陈代谢,进而抑制抗肿瘤免疫应答,应用相应抗体治疗不仅能增强T细胞杀伤作用,更可以重新平衡TME中氨基酸代谢.氨基酸饥饿疗法也可增加部分免疫治疗的疗效.
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