Transcriptome analysis reveals that Müllerian inhibiting substance regulates signaling pathways that contribute to endometrial carcinogenesis.

Abstract

Müllerian inhibiting substance (MIS) has been shown to inhibit growth of a number of tumors in vitro and/or in vivo, but the downstream pathways which it regulates are not fully understood. In the present study we show that MIS type II receptor was highly expressed in AN3CA cells, a cell line derived from human endometrial cancer cell in which MIS-treatment caused a reduction of cell viability, and induced cellular apoptosis and genes involved cell cycle arrest. To understand the genome-wide effects of MIS on gene regulation, we performed serial gene expression analyses from 0 to 96 h at 24 h intervals after treating AN3CA cells with MIS. Transcriptomic analysis of molecular changes induced by MIS identified 2,688 differentially expressed genes that were significantly up- or down-regulated during the 96 h study period. When the 2,688 differentially expressed genes were mapped to known biological processes, Wnt-, cancer-, proteolysis-, cytoskeleton-, cell cycle-, apoptosis-, and MAPK-signaling pathways emerged as the functions most significantly changed by MIS in AN3CA cells. Furthermore, western blot analysis validated that protein expression of cell cycle inhibitory genes, apoptotic protease activating factor-1 (APAF-1), β-catenin-interacting protein (ICAT), Rb related protein 130 (p130), and inhibitor of disheveled Dvl and Axin complex (IDAX), were gradually increased over the time of the study, whereas downstream cell cycle activating genes, cyclin-dependent kinase 2 (CDK2) and phospho-c-Jun were downregulated in MIS-treated AN3CA cells. These transcriptome analyses support previous observations that MIS functions as a tumor suppressor, potentially by regulating signaling pathways that could contribute to endometrial carcinogenesis, and indicating that MIS should be considered as a potential treatment for endometrial cancer.

• Authors: Youn Jee Chung, Hyun Jung Kim, Sang Ho Park, Joo Hee Yoon, Mee Ran Kim, Suk Woo Nam, David T MacLaughlin, Patricia K Donahoe, Jang Heub Kim
• Journal: International journal of oncology (Int J Oncol) Vol. 46 Issue 5 Pg. 2039-46 (May 2015) ISSN: 1791-2423 [Electronic] Greece
• PMID: 25760378 (Publication Type: Journal Article)

Chemical References

• APAF1 protein, human
• Adaptor Proteins, Signal Transducing
• Apoptotic Protease-Activating Factor 1
• CTNNBIP1 protein, human
• Intracellular Signaling Peptides and Proteins
• Proto-Oncogene Proteins c-jun
• Receptors, Peptide
• Receptors, Transforming Growth Factor beta
• Retinoblastoma-Like Protein p130
• anti-Mullerian hormone receptor
• Cyclin-Dependent Kinase 2

Topics

• Adaptor Proteins, Signal Transducing
• Apoptotic Protease-Activating Factor 1 (metabolism)
• Blotting, Western
• Cell Line, Tumor
• Cyclin-Dependent Kinase 2 (metabolism)
• Endometrial Neoplasms (genetics, pathology)
• Female
• Gene Expression Profiling
• Gene Expression Regulation, Neoplastic (physiology)
• Humans
• Intracellular Signaling Peptides and Proteins (metabolism)
• Proto-Oncogene Proteins c-jun (metabolism)
• Receptors, Peptide (physiology)
• Receptors, Transforming Growth Factor beta (physiology)
• Retinoblastoma-Like Protein p130 (metabolism)
• Signal Transduction (physiology)