Low-density microarray analysis of TGFβ1-dependent cell cycle regulation in human breast adenocarcinoma MCF7 cell line

• Main Authors: Dubrovska, A.M., Souchelnytskyi, S.S.
• Format: Article
• Language: English
• Published: Інститут молекулярної біології і генетики НАН України 2014
• Series: Вiopolymers and Cell
• Subjects: Genomics, Transcriptomics and Proteomics
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/153737

Transforming growth factor β1 (TGFβ1) is a growth regulator that has antiproliferative effects on a range of epithelial cells at the early stages and promoting tumorigenesis at the later stages of cancer progression. The molecular mechanisms of a duel role of TGFβ1 in tumor growth regulation remain poorly understood. Aim. To analyze the TGFβ1-dependent cell cycle regulation of tumorigenic breast epithelial cells. Methods. Our present study was designed to examine the regulatory effect of TGFβ1 on the expression of a panel of 96 genes which are known to be critically involved in cell cycle regulation. GEArray Q series Human Cell Cycle Gene Array was applied to profile the gene expression changes in MCF7 human breast adenocarcinoma cell line treated with TGFβ1. Results. The gene expression array data enabled us to reveal the molecular regulators that might connect TGFβ1 signaling to the promoting of the tumor growth, e. g. retinoblastoma protein (pRB1), check-point kinase 2 (Chk2), breast cancer 1, early onset (BRCA1), DNA damage checkpoint protein RAD9, cyclin-dependent kinase 2 (CDK2), cyclin D1 (CCND1). Conclusions. The uncovering of the key signaling modules involved in TGFβ1- dependent signaling might provide an insight into the mechanisms of TGFβ1-dependent tumor growth and can be beneficial for the development of novel therapeutic approaches.