Premium
Overexpression of myosin is associated with the development of uterine myoma
Author(s) -
Zhang Wenchao,
Cheng Zhongping,
Qu Xiaoyan,
Dai Hong,
Ke Xiaoping,
Chen Zijiang
Publication year - 2014
Publication title -
journal of obstetrics and gynaecology research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 50
eISSN - 1447-0756
pISSN - 1341-8076
DOI - 10.1111/jog.12461
Subject(s) - medicine , myoma , uterine myoma , myosin , andrology , gynecology , microbiology and biotechnology , uterus , biology
Aim Myosin is involved in cell contraction and motility, but it is unclear whether it is involved in cell proliferation in uterine myoma. In this study therefore we aimed to explore the role of myosin in uterine myoma. Material and Methods Immunohistochemistry and real‐time polymerase chain reaction were used to determine the expression of myosin light chain ( MLC ), myosin heavy chain ( MHC ) and myosin light chain kinase ( MLCK ) in patient uterine myoma and adjacent smooth muscle tissue. Human uterine fibroid cells were isolated and cultured in vitro , myosin heavy chain 11 ( MHC subtype expressed in uterine fibroid cells) was knocked down by RNA interference to reduce the expression of myosin, then cell proliferation was determined by the methyl thiazol tetrazolium bromide method. To explore the possible mechanism of reduced cell proliferation after myosin heavy chain 11 knockdown, the downstream proteins collagen I , insulin‐like growth factor‐1, fibronectin and proteoglycans were analyzed. Results Expression of MLC , MHC , MLCK and p‐ MLCK in uterine myoma cells was significantly higher than in adjacent smooth muscle cells. After knockdown of MHC , smooth muscle cell proliferation decreased, and the production of collagen I , insulin‐like growth factor‐1 and fibronectin was also reduced, but proteoglycans did not show any significant change. Conclusion Myosin is overexpressed in uterine myoma, and the overexpression of myosin is associated with both uterine contraction and tumor development of uterine myoma.