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Aberrant promoter methylation and loss of suppressor of cytokine signalling-1 gene expression in the development of uterine cervical carcinogenesis
Department of Biotechnology, Panjab University, Sector-14, Chandigarh, India.
Department of Biotechnology, Panjab University, Sector-14, Chandigarh, India.ORCID-id: 0000-0003-2885-5708
Division of Molecular Genetics and Biochemistry, Institute of Cytology & Preventive Oncology (ICMR), I-7, Sector-39, Noida, India.
Department of Gynaecology and Obstetrics, PGIMER, Sector-12, Chandigarh, India.
Vise andre og tillknytning
2011 (engelsk)Inngår i: Cellular Oncology, ISSN 2211-3428, E-ISSN 2211-3436, Vol. 34, nr 6, s. 533-43Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND: Cervical cancer is a leading cause of cancer related deaths in women worldwide caused due to infection of high-risk human papillomaviruses. As JAK/STAT signalling pathway has been shown to play an important role during carcinogenesis, we studied the role of silencing of Suppressor of Cytokine Signalling-1 (SOCS-1) gene, a negative regulator of JAK/STAT pathway in cervical cancer.

METHODS: The expression pattern of SOCS-1 mRNA and protein was analyzed in different stages of cervical tumor biopsies while normal cervical tissues served as controls. RT-PCR, immunohistochemistry and methylation-specific PCR (MSP) were performed to assess the expression pattern and promoter methylation of SOCS-1 gene in a total of 120 fresh surgically resected cervical tissue specimens comprising precancer (n = 12), cancer (n = 78) and normal controls (n = 30).

RESULTS: Compared with expression of SOCS-1 in normal tissues, 64% of the tumor tissues expressed either undetectable or reduced expression. Aberrant promoter methylation of SOCS-1 was found in 61% of the cervical tumor tissues. SOCS-1 expression and methylation were significantly associated with severity of the disease (p < 0.01).

CONCLUSION: We demonstrate for the first time the transcriptional inactivation of SOCS-1 gene due to hypermethylation and synergism with HPV infection which may play an important role in cervical carcinoma.

sted, utgiver, år, opplag, sider
2011. Vol. 34, nr 6, s. 533-43
Emneord [en]
Cervical cancer, SOCS-1, HPV, Promoter methylation
HSV kategori
Identifikatorer
URN: urn:nbn:se:his:diva-8995DOI: 10.1007/s13402-011-0056-2ISI: 000297362500003PubMedID: 21935712Scopus ID: 2-s2.0-84861498667OAI: oai:DiVA.org:his-8995DiVA, id: diva2:712814
Tilgjengelig fra: 2014-04-16 Laget: 2014-04-16 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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