Research Progress of Angiogenin in Fertility and Reproduction Endocrinology

Angiogenin (ANG) was previously proved one of the potent proangiogenic factors in the process of formation, remodeling and maturation of new blood vessel, then was found playing a dual role in tumor growth by promoting both tumor angiogenesis and cancerous cell proliferation and promoting neuron neurite growth, recently it has been proved an important regulator in stem cell regeneration and stemness maintenance by affecting nucleic acid hydrolysis and protein synthesis. Here we review the related research about ANG in reproduction. ANG was detected in different levels of follicle except in primordial stage in bovine and human and reveals that it may play role in follicle development and mature. During pregnancy, large amount of ANG dramatically expressed in maternal, amniotic fluid or fetal placenta, it may play a role in embryo implantation, the growth and development of fetus. The occurrence of reproduction related diseases such as infertility, endometriosis, ovarian hyperstimulation syndrome, gestational hypertension, fetal growth retardation and etc seems related with ANG. However, detailed research on the mechanism of ANG in related diseases is lack. Therefore, the further study about the role of ANG is of great significance for the understanding ANG function and may bring promising treatment of fertility, reproduction related diseases.