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K-Ras 4A Transcript variant is up-regulated in eutopic endometrium of endometriosis patients during proliferative phase of menstrual cycle
Authors
S. Amini-Moghaddam
R. Mahdian
S. Shahbazi
M. Shahrabi-Farahani
Publication date
1 January 2015
Publisher
Abstract
Aims: K-Ras transcripts comprise two main isoforms: K-Ras 4A and K-Ras 4B, which act differently. The expression of both isoforms was reported in many human tissues. However, K-Ras 4B was the major expressed transcript variant. An increased expression of K-Ras 4B mRNA was reported in eutopic endometrium of endometriosis patients. In this way, we aimed to study the expression of K-Ras 4A transcript in eutopic endometrium related to endometriosis. Methods: Employing exon4-flanking primers, K-Ras isoforms were simultaneously amplified in a RT-PCR reaction. Quantitative real-time PCR was performed using GAPDH as an internal control. K-Ras 4A transcript expression in eutopic endometrium was analyzed by ��CT method. Results: We identified existence of both of K-Ras 4A and K-Ras 4B in eutopic endometrium of patients and controls. Quantitative real-time analysis demonstrated that K-Ras 4A expression was 2.7-fold higher in endometriosis than non-endometriosis eutopic samples. Interestingly, this overexpression mainly occurs through the proliferative phase of menstrual cycle. Conclusion: The findings bring to light the eminent role of K-Ras 4A in endometriosis. This splice variant which is known for promoting apoptosis could be an effective factor in balance between proliferation and death of eutopic endometrial cells. © 2014, Springer-Verlag Berlin Heidelberg
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eprints Iran University of Medical Sciences
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Last time updated on 10/10/2019