山东大学学报 (医学版) ›› 2018, Vol. 56 ›› Issue (10): 64-71.doi: 10.6040/j.issn.1671-7554.0.2017.795
• • 上一篇
兰静1,李栋2,时庆2,刘子琳1,周盼盼1,鞠秀丽1,2
LAN Jing1, LI Dong2, SHI Qing2, LIU Zilin1, ZHOU Panpan1, JU Xiuli1,2
摘要: 目的 探讨脐血NK细胞改善亚急性衰老大鼠模型肝脏损伤的可行性及其分子机制。 方法 采用基因工程改造的K562细胞,从新鲜脐带血获得大量NK细胞。8~10周龄雄性Wistar大鼠随机分为4组:Normal组、Model组、Mod-Con组和Mod-NK组。实验完成1周后观察大鼠体质量及肝脏指数,检测血清和肝脏中超氧化物岐酶(SOD)、丙二醛(MDA)及肝脏中凋亡相关基因的表达,观察肝脏切片组织细胞形态变化。 结果 皮下注射D-半乳糖可成功构建亚急性衰老大鼠模型。输注大量高纯度的脐血NK细胞,可显著改善其肝脏损伤,促进体质量回升(P<0.01)并降低肝脏指数(P<0.05),血清及肝脏中SOD活性增强(P<0.01),MDA水平降低(P<0.01);肝脏切片示肝细胞水肿减轻,Masson染色显示肝组织纤维化减轻;促凋亡基因表达减少(P<0.01),而抗凋亡基因成纤维细胞生长因子表达上升(P<0.01)。 结论 脐血NK细胞输注可有效改善亚急性衰老大鼠的肝脏损伤。
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