Evaluation of stemness marker expression in bovine ovarian granulosa cells

• Published in: Animal reproduction Vol. 16; no. 2; pp. 277 - 281
• Main Authors: Hoang, Son Nghia, Ho, Chi Nguyen Quynh, Nguyen, Thao Thi Phuong, Doan, Chung Chinh, Tran, Diem Hong, Le, Long Thanh
• Format: Journal Article
• Language: English
• Published: Colégio Brasileiro de Reprodução Animal - CBRA 23.10.2019; Colégio Brasileiro de Reprodução Animal
• Subjects: BIOTECHNOLOGY & APPLIED MICROBIOLOGY; Original; ovarian follicles; stemness markers; granulosa cells; transcript expression
• ISSN: 1984-3143; 1806-9614; 1984-3143
• DOI: 10.21451/1984-3143-AR2018-0083

The objective of this study was to assess the stemness marker expressions (Oct4, Nanog, and Sox2) of granulosa cells (GCs) collected from bovine ovarian follicles and in vitro expansion. The single bovine ovarian follicles were isolated and categorized into 4 groups according to their diameter including group A (<2 mm), group B (2-3 mm), group C (3-4 mm), and group D (>4 mm). Quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) and immunostaining were applied to evaluate the stemness marker expression of bovine GCs from ovarian follicles. We also estimated the stemness marker transcript expressions of GCs during in vitro expression by qRT-PCR. qRT-PCR analysis demonstrated that fresh GCs from bovine ovarian follicles expressed the stemness markers (Oct4, Nanog, Sox2). These markers were down-regulated during antral stage follicular development. We also estimated stemness marker transcript expressions of GCs which were isolated and in vitro expanded from ovarian follicles of group A. The qRT-PCR results showed that Oct4 and Sox2 transcript expressions were reduced during in vitro expansion while Nanog transcript was not expressed.