清除可溶性MIC可以逆转多发性骨髓瘤患者的自然杀手细胞功能受损
Sojeong Kim1, Haerim Chung1, Jeong-Eun Kwak1
1Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of).
Journal for immunotherapy of cancer
|January 8, 2024
概括
以人性化抗体 (huB10G5) 为向可溶性主要基因相容性复合体 (MHC) I类链相关蛋白 (MIC),可恢复多发性骨髓瘤 (MM) 患者的自然杀手 (NK) 细胞活性. 这种方法显示出增强MM细胞免疫疗法结果的希望.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 主体组织相容性复合体 (MHC) 类I链相关蛋白 (MIC) 是由多发性骨髓瘤 (MM) 细胞释放的压力诱导的连接体.
- 可溶性MIC通过抑制NKG2D受体损害了自然杀手 (NK) 细胞的识别和功能.
- 清除可溶性MIC以恢复MM患者NK细胞活性的疗效尚未得到充分证实.
研究的目的:
- 使用TCGA MMRF CoMMpass数据调查MM中的MIC表达的预后意义.
- 分析MM患者的可溶性MIC水平及其与NK细胞免疫类型的相关性.
- 评估在MM中用单克隆抗体 (mAb) 清除可溶性MIC的治疗潜力.
主要方法:
- 对MIC表达和整体存活时间的TCGA MMRF CoMMpass数据的分析.
- 以ELISA测量周围血液和骨髓血中的可溶性MIC水平.
- 多色流细胞测量以评估NK细胞免疫类型和NKG2D表达.
- 功能性试验评估NK细胞对MIC过度表达MM细胞的细胞毒性和huB10G5.5的作用.
主要成果:
- 高MICA表达与MM患者的整体存活率显著改善有关.
- 溶性MICA水平在MM中升高,在骨髓中高于周围血液,与髓瘤负担相关.
- 溶性MICA降低NKG2D的表达,并降低NK细胞的细胞毒性,这种细胞毒性由huB10G5逆转,增强NK细胞降粒.
结论:
- 用huB10G5准可溶性MIC代表了MM的潜在治疗策略.
- 清除可溶性MIC可能会恢复NK细胞功能,并改善MMNKG2D依赖细胞免疫疗法的结果.
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