title: Identification of Polycystic Ovary Syndrome (PCOS) Specific Genes in Cumulus and Mural Granulosa Cells.
abstract: Polycystic ovary syndrome (PCOS) is a metabolic and endocrine disorder which affects women of reproductive age with prevalence of 8-18%. The oocyte within the follicle is surrounded by cumulus cells (CCs), which connect with mural granulosa cells (MGCs) that are responsible for secreting steroid hormones. The main aim of this study is comparing gene expression profiles of MGCs and CCs in PCOS and control samples to identify PCOS-specific differentially expressed genes (DEGs). In this study, two microarray databases were searched for mRNA expression microarray studies performed with CCs and MGCs obtained from PCOS patients and control samples. Three independent studies were selected to be integrated with naive meta-analysis since raw meta-data from these studies were found to be highly correlated. DEGs in these somatic cells were identified for PCOS and control groups. This study enabled us to reveal dysregulation in MAPK (mitogen activated protein kinase), insulin and Wnt signaling pathways between CCs and MGCs in PCOS. The meta-analysis results together with qRT-PCR validations provide evidence that molecular signaling is dysregulated through MGCs and CCs in PCOS, which is important for follicle and oocyte maturation and may contribute to the pathogenesis of the syndrome.
authors.affiliation: Biotechnology Institute, Ankara University, Ankara, Turkey.
authors.forename: Alp
authors.initials: A
authors.lastname: Aydos
authors.affiliation: Test Tube Babies Unit, HRS Women Hospital, Ankara, Turkey.
authors.forename: Aykut
authors.initials: A
authors.lastname: Gurel
authors.affiliation: Biotechnology Institute, Ankara University, Ankara, Turkey.
authors.forename: Yasemin
authors.initials: Y
authors.lastname: Oztemur Islakoglu
authors.affiliation: Biotechnology Institute, Ankara University, Ankara, Turkey.
authors.forename: Senem
authors.initials: S
authors.lastname: Noyan
authors.affiliation: Test Tube Babies Unit, Medicana International Ankara Hospital, Ankara, Turkey.
authors.forename: Bagdagul
authors.initials: B
authors.lastname: Gokce
authors.affiliation: Department of Gynecology and Obstetrics, Liv Hospital, Ankara, Turkey.
authors.forename: Tolga
authors.initials: T
authors.lastname: Ecemis
authors.affiliation: Department of Gynecology and Obstetrics, TOBB ETU Hospital, Ankara, Turkey.
authors.forename: Cemil
authors.initials: C
authors.lastname: Kaya
authors.affiliation: Department of Gynecology and Obstetrics, HRS Women Hospital, Ankara, Turkey.
authors.forename: Arif Tarik
authors.initials: AT
authors.lastname: Aksu
authors.affiliation: Biotechnology Institute, Ankara University, Ankara, Turkey.
authors.forename: Bala
authors.identifier: http://orcid.org/0000-0002-4320-5685
authors.initials: B
authors.lastname: Gur Dedeoglu
mesh_terms: D054885:Cumulus Cells / Q000378:metabolism*; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D020935:MAP Kinase Signaling System; D011085:Polycystic Ovary Syndrome / Q000378:metabolism*; D060449:Wnt Signaling Pathway