Liao Siyun, Bodmer Janet, Pietras Daniel, Azhar Mohamad, Doetschman Tom, Schultz Jo El J
Department of Pharmacology and Cell Biophysics, University of Cincinnati, Cincinnati, Ohio, USA.
Dev Dyn. 2009 Feb;238(2):249-64. doi: 10.1002/dvdy.21677.
Fibroblast growth factor 2 (FGF2) consists of multiple protein isoforms (low molecular weight, LMW, and high molecular weight, HMW) produced by alternative translation from the Fgf2 gene. These protein isoforms are localized to different cellular compartments, indicating unique biological activity. FGF2 isoforms in the heart have distinct roles in many pathological circumstances in the heart including cardiac hypertrophy, ischemia-reperfusion injury, and atherosclerosis. These studies suggest distinct biological activities of FGF2 LMW and HMW isoforms both in vitro and in vivo. Yet, due to the limitations that only the recombinant FGF2 LMW isoform is readily available and that the FGF2 antibody is nonspecific with regards to its isoforms, much remains to be determined regarding the role(s) of the FGF2 LMW and HMW isoforms in cellular behavior and in cardiovascular development and pathophysiology. This review summarizes the activities of LMW and HMW isoforms of FGF2 in cardiovascular development and disease.
成纤维细胞生长因子2(FGF2)由Fgf2基因通过可变翻译产生的多种蛋白质异构体(低分子量,LMW,和高分子量,HMW)组成。这些蛋白质异构体定位于不同的细胞区室,表明具有独特的生物学活性。心脏中的FGF2异构体在心脏的许多病理情况下具有不同的作用,包括心脏肥大、缺血再灌注损伤和动脉粥样硬化。这些研究表明FGF2 LMW和HMW异构体在体外和体内均具有独特的生物学活性。然而,由于仅重组FGF2 LMW异构体易于获得且FGF2抗体对其异构体不具有特异性等局限性,关于FGF2 LMW和HMW异构体在细胞行为以及心血管发育和病理生理学中的作用仍有许多有待确定。本综述总结了FGF2的LMW和HMW异构体在心血管发育和疾病中的活性。