Hongmin Zhao1, Hongli Yu1, Jianhua Zheng1, Ning Ning1, Fanglan Tang1, Yang Yang1, Yan Wang2. 1. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China. 2. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150001, China. Electronic address: wangyan20020202@163.com.
Abstract
PURPOSE: This investigation was aimed at extrapolating whether and how lncRNA GAS5, miR-196a-5p and HOXA5 altered progression of ovarian cancer (OA). METHOD: Totally 195 pairs of OA tissues and adjacent normal tissues were collected. Also si-GAS5, pcDNA-GAS5, miR-196a-5p mimic, miR-196a-5p inhibitor and negative control (NC) were, respectively, transfected into OA cells. Besides, dual-luciferase reporter gene assay was performed to validate the targeted relationships between GAS5 and miR-196a-5p, as well as between miR-196a-5p and HOXA5. The impacts of GAS5, miR-196a-5p and HOXA5 on viability, proliferation and apoptosis of OA cells were appraised via conduction of colony formation assay, MTT assay and flow cytometry assay. RESULT: Lower GAS5 expression and higher miR-196a-5p expression were associated with larger tumor size (≥5 cm) and more advanced FIGO stage (III-IV) of OA patients (P < 0.05). Transfection of si-GAS5, miR-196a-5p mimic or si-HOXA5 conferred OA cells with stronger viability, faster proliferation and smaller percentage of apoptosis (P < 0.05). After injecting mice models with si-GAS5, miR-196a-5p mimic or si-HOXA5, a larger tumor size was also observed within the rats (P < 0.05). GAS5 was indicated to directly target miR-196a-5p and modify its expression, and the targeted relationship also seemed to exist between miR-196a-5p and HOXA5 (P < 0.05). The HOXA5 was found to reverse the effects imposed by miR-196a-5p on viability, proliferation and apoptosis of OA cells (P < 0.05). CONCLUSION: LncRNA GAS5 depressed OA development by targeting miR-196a-5p and thereby down-regulating HOXA5 expression, providing substance for developing lncRNA-based strategies to treat OA.
PURPOSE: This investigation was aimed at extrapolating whether and how lncRNA GAS5, miR-196a-5p and HOXA5 altered progression of ovarian cancer (OA). METHOD: Totally 195 pairs of OA tissues and adjacent normal tissues were collected. Also si-GAS5, pcDNA-GAS5, miR-196a-5p mimic, miR-196a-5p inhibitor and negative control (NC) were, respectively, transfected into OA cells. Besides, dual-luciferase reporter gene assay was performed to validate the targeted relationships between GAS5 and miR-196a-5p, as well as between miR-196a-5p and HOXA5. The impacts of GAS5, miR-196a-5p and HOXA5 on viability, proliferation and apoptosis of OA cells were appraised via conduction of colony formation assay, MTT assay and flow cytometry assay. RESULT: Lower GAS5 expression and higher miR-196a-5p expression were associated with larger tumor size (≥5 cm) and more advanced FIGO stage (III-IV) of OA patients (P < 0.05). Transfection of si-GAS5, miR-196a-5p mimic or si-HOXA5 conferred OA cells with stronger viability, faster proliferation and smaller percentage of apoptosis (P < 0.05). After injecting mice models with si-GAS5, miR-196a-5p mimic or si-HOXA5, a larger tumor size was also observed within the rats (P < 0.05). GAS5 was indicated to directly target miR-196a-5p and modify its expression, and the targeted relationship also seemed to exist between miR-196a-5p and HOXA5 (P < 0.05). The HOXA5 was found to reverse the effects imposed by miR-196a-5p on viability, proliferation and apoptosis of OA cells (P < 0.05). CONCLUSION: LncRNA GAS5 depressed OA development by targeting miR-196a-5p and thereby down-regulating HOXA5 expression, providing substance for developing lncRNA-based strategies to treat OA.
Authors: Mario Dioguardi; Stefania Cantore; Diego Sovereto; Lucia La Femina; Giorgia Apollonia Caloro; Francesca Spirito; Salvatore Scacco; Michele Di Cosola; Lorenzo Lo Muzio; Giuseppe Troiano; Andrea Ballini Journal: Life (Basel) Date: 2022-08-19