title: Upregulation of Limk1 caused by microRNA-138 loss aggravates the metastasis of ovarian cancer by activation of Limk1/cofilin signaling.
abstract: LIM kinase 1 (Limk1) is associated with cell prolife-ration and metastasis and its dysregulated expression has been observed in many types of cancer. The present study aimed to examine the role of Limk1 in the development of ovarian cancer, as well as the underlying molecular mechanism involved. The results showed that increased Limk1 and decreased miR-138 expression co-existed in ovarian cancer. Furthermore, knockout of Limk1 or the overexpression of miR-138 resulted in reduced cell invasion and migration, while silencing of miR-138 led to enhancement of the invasion and migration of ovarian cancer cells. Cell growth was inhibited by the overexpression of miR-138, although not by the knockout of Limk1. miR-138 directly targeted Limk1 and inhibited ovarian cancer cell growth by PCNA and Bcl-2. Moreover, Limk1/cofilin/p-cofilin is likely a critical signaling pathway involving in miR-138 modulation of ovarian cancer cell metastasis. The results provide evidence supporting miR-138/Limk1 as a novel diagnostic or therapeutic target for ovarian cancer.
authors.affiliation: Department of Gynecology and Obstetrics, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China.
authors.forename: Puxiang
authors.initials: P
authors.lastname: Chen
authors.affiliation: Department of Gynecology and Obstetrics, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China.
authors.forename: Mengjun
authors.initials: M
authors.lastname: Zeng
authors.affiliation: Department of Gynecology and Obstetrics, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Gynecology and Obstetrics, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China.
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Fang
mesh_terms: D051339:Actin Depolymerizing Factors / Q000235:genetics / Q000378:metabolism; D045744:Cell Line, Tumor; D002465:Cell Movement; D049109:Cell Proliferation; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D055786:Gene Knockout Techniques; D006801:Humans; D054461:Lim Kinases / Q000235:genetics* / Q000378:metabolism*; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism*; D009362:Neoplasm Metastasis; D010051:Ovarian Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D015398:Signal Transduction
chemical_list: D051339:Actin Depolymerizing Factors; C546110:MIRN138 microRNA, human; D035683:MicroRNAs; C515892:LIMK1 protein, human; D054461:Lim Kinases