螺旋体A通过通过p38/MAPK信号通路诱导PAI-1表达来增强自然杀手细胞的活性
Yunhee Lee1, Mi Jeong Kim1, Young-Ju Kang2
1Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
International immunopharmacology
|September 13, 2025
概括
赫力索A通过增加细胞毒性功能和激活p38/MAPK通路来增强自然杀手 (NK) 细胞的抗癌活性,从而调节PAI-1表达. 这表明癌症治疗的潜在治疗应用.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 赫力索A具有免疫刺激作用,增强癌症和子宫内膜异位症患者的T和自然杀手 (NK) 细胞活性.
- 对于Helixor A对NK细胞作用的精确分子机制尚不完全理解.
研究的目的:
- 研究Helixor A对NK细胞激活,分化和潜在分子通路的影响.
- 阐明p38/MAPK通路和PAI-1在Helixor A对NK细胞的影响中的作用.
主要方法:
- 评估NK细胞细胞毒性活性,激活受体的表达 (NKp44,NKp30),细胞分解颗粒 (granzyme B, perforin) 和脱粒标记 (CD107a).
- 测量了细胞因子生产 (IFN-γ,TNF-α) 和NK细胞与CD34+造血细胞的分化.
- 利用西方抹杀,PAI-1促进剂测定和共同免疫沉来分析p38/MAPK通路和PAI-1相互作用.
主要成果:
- 根据剂量,Helixor A增强了NK细胞的细胞毒性,增加了NKp44,NKp30,格兰酶B,穿孔素和CD107a的表达,并促进了IFN-γ和TNF-α的产生.
- 素A激活了p38/MAPK通路,导致PAI-1表达和转录活性升级,p38直接与PAI-1相互作用.
- 抑制p38通路或PAI-1过度表达调节NK细胞细胞毒性,证实了它们的关键作用.
结论:
- 赫力索A通过p38/MAPK通路激活和PAI-1上调调节来增强NK细胞的细胞毒性.
- 这些发现表明,Helixor A是增加NK细胞活性或探索用于癌症治疗的PAI-1基因疗法的潜在治疗剂.
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