Molecular signaling pathway analysis of MiR-155 targetome to decipher various molecularfunctions of miR-155 in breast cancer with respect to prevalence of vaginal candidiasis in patients
Publish place: 10th International Breast Cancer Congress
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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ICBCMED10_064
تاریخ نمایه سازی: 21 اردیبهشت 1397
Abstract:
Background: Breast cancer is the most common malignancy in women. Recently, studies have shown upregulation of miR-155 in various cancers explaining its oncogenic role. This study aims to estimate miR-155 expression and its targetome analysis for deciphering the molecular functions of miR-155 in breast cancer.Material and Methods: In silico analyses of miR-155 targetome in breast cancer using Unigene database was examined. DAVID database was recruited to conduct molecular pathways analyses. RTqPCR was implemented for analysis of miR-155 expression in 40 breast cancer samples. Incidence of vaginal candidiasis was testified in these patients by means of mycology experiments.Results: KEGG signaling pathways were revealed as the most statistically relevant pathways with miR- 155 targetome such as pathway in cancer (P-Value=2.4E-6) , cell cycle (p-value=5.3E-2) , apoptosis (P-Value=7.6E-2) and wnt signaling pathway (p-value=7.0E-2) . miR-155 can performseveral tasks during first phases of tumorigenesis of breast cancer such as prevention of apoptosis/angiogenesis and induction of cell survival/proliferation. We observed miR-155 was upregulated in patients. The isolated Candida from these patients were C.glabrata, C.tropicalis and C.krusei.Conclusion: miR-155 could exert an oncogenic function through targeting several tumor suppressor proteins expressed in breast tissues. There is a relation between incidence of breast cancer and candida infection.
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Authors
Mina Kazempour
Department of Microbiology, Falavarjan Branch, Islamic Azad University, Falavarjan, Iran
Kamran Ghaedi
Division of Cellular and Molecular Biology, Department of Biology, Faculty of Sciences, Universityof Isfahan, Isfahan, Iran
Mahboobeh Madani
Department of Microbiology, Falavarjan Branch, Islamic Azad University, Falavarjan, Iran