通过RNA-98-5p,IL-7通过准CDKN1AA来促进CD19导向的CAR-T细胞的增殖
Li-Rong Yang1, Lin Li2, Ming-Yao Meng2
1Central Laboratory of Yan'an Hospital Affiliated to Kunming Medical University, China; Key Laboratory of Tumor Immunological Prevention and Treatment, Yunnan Province, China; Department of Oncology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, China.
International immunopharmacology
|September 27, 2023
概括
介质素-7 (IL-7) 增强了对CD19+癌症的仿真抗原受体T细胞 (CAR-T) 增殖. 这通过miRNA-98-5p针对CDKN1A发生,从而提高了CAR-T疗法的疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 癌症治疗 癌症治疗
背景情况:
- 针对CD19的化学抗原受体T细胞 (CAR-T) 治疗对B细胞白血病和淋巴瘤有希望.
- 挑战仍然存在,包括频繁的复发和不完全的缓解,需要改善CAR-T细胞增殖,细胞毒性,疲劳和透.
- 众所周知,互白素-7 (IL-7) 增强了CAR-T记忆特征,但根本的机制尚未完全理解.
研究的目的:
- 研究微RNAs (miRNAs) 在IL-7介导的抗CD19CAR-T细胞激活中的作用.
- 阐明IL-7增强CAR-T细胞功能的特定机制.
- 探索IL-7在改善CAR-T细胞生产中的潜在应用,以加强癌症治疗.
主要方法:
- 使用已建立的第三代抗CD19CAR-T细胞.
- 评估IL-7对CAR-T细胞增殖,CD4+CAR+细胞比率和细胞周期 (S阶段) 的影响.
- 在NAMALWA异种移植模型中评估体内抗瘤疗效.
- 在IL-7刺激的CAR-T细胞中量化了CDKN1A和miRNA-98-5p的表达.
- 研究了CDKN1A和miRNA-98-5p之间的关联.
主要成果:
- IL-7显著增加了抗CD19的CAR-T细胞的增殖和CD4+CAR+细胞的比例,促进细胞周期向S阶段的进展.
- 在NAMALWA异种移植模型中,IL-7刺激的CAR-T细胞表现出增强的瘤杀伤效率.
- 治疗IL-7导致CDKN1A的表达减少,并在CAR-T细胞中增加miRNA-98-5p的表达.
- 在CDKN1A表达和miRNA-98-5p水平之间发现了显著的关联.
结论:
- IL-7增强了抗CD19的CAR-T细胞增殖和抗瘤活性.
- 这种增强是由IL-7诱导的miRNA-98-5p上调调节的介导,该miRNA-98-5p针对并降低CDKN1A表达的调节.
- 这些发现表明IL-7在CAR-T细胞激活中的新机制,并为在CAR-T细胞生产策略中应用IL-7提供了基础.
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