比较五味子乙素(Sch B)与右丙亚胺(DEX)对阿霉素(DOX)诱导大鼠急性心脏毒性的保护作用。将SD大鼠随机分为6组,生理盐水组、阿霉素组、Sch B 80 mg·kg-1+阿霉素组、Sch B 40 mg·kg-1+阿霉素组、Sch B 20 mg·kg-1+阿霉素组和DEX+阿霉素组;大鼠尾静脉给予阿霉素(15 mg·kg-1)后诱导外周血中心肌酶升高、心肌组织中抗氧化损伤相关酶活力下降和心脏收缩与舒张功能障碍。而预先给予Sch B的大鼠都能够明显改善阿霉素诱导的上述症状,且保护效果好于DEX。结果提示,Sch B能预防阿霉素诱导大鼠的急性心脏毒性,其在临床上有潜在的应用价值。
APOBEC3 protein families, a DNA cytidine deaminase, were up-regulated in multiple tumors. However, the relationship between Hepatocellular carcinoma(HCC) and APOBEC3B(A3B) remains unknown. It has been confirmed that interleukin-6(IL-6)has significant impacts on oncogenesis of HCC. Here, we reported that the expression of IL-6 was substantially up-regulated by A3 B in HepG2 cells. A3 B induced IL-6 expression through relocating HuR to enhance the IL-6 mRNA stability. Further analysis indicated that IL-6 also increased the expression of A3 B through JAK1/STAT3 signaling pathway, which formed a positive feedback to maintain the continuous expression of A3 B and IL-6, and thereby promoted the prolonged non-resolving inflammation. Collectively, these findings suggest that A3 B is essential for oncogenesis of HCC, and is a potential target for preventive intervention.
Shuran LiXueyang BaoDuowei WangLinjun YouXianjing LiHongbao YangJinsong BianYun WangYong Yang
