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Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis

  • Authors:
    • Xiao Lv
    • Danbo Wang
    • Yue Ma
    • Zaiqiu Long
  • View Affiliations / Copyright

    Affiliations: Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
    Copyright: © Lv et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1349-1356
    |
    Published online on: December 22, 2017
       https://doi.org/10.3892/ijmm.2017.3342
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Abstract

B-Raf proto-oncogene, serine/threonine kinase (BRAF) has previously been identified as a candidate target gene in endometriosis. Wild-type and mutated BRAF serve important roles in different diseases. The aim of the present study was to explore BRAF mutation, the mRNA and protein expression of wild-type BRAF (wtBRAF) in endometriosis, and the association between the expression levels of wtBRAF and the predicted transcription factor cAMP responsive element binding protein 1 (CREB1). In the present study, BRAF mutation was detected using Sanger sequencing among 30 ectopic and matched eutopic endometrium samples of patients with endometriosis as well as 25 normal endometrium samples, and no BRAF mutation was detected in exons 11 or 15. A region of ~2,000 bp upstream of the BRAF gene was then screened using NCBI and UCSC databases, and CREB1 was identified as a potential transcription factor of BRAF by analysis with the JASPAR and the TRANSFAC databases. Quantitative polymerase chain reaction was used to analysis the mRNA expression levels of wtBRAF and CREB1, and the corresponding protein expression levels were evaluated using immunohistochemistry and western blot analysis. The results revealed that the mRNA and protein expression levels of wtBRAF and CREB1 were significantly upregulated in the eutopic endometrial tissues of patients with endometriosis compared with normal endometrial tissues (P<0.05) and no significant difference in wtBRAF and CREB1 levels was detected between the ectopic and eutopic endometrium (P>0.05). In addition, correlation analysis revealed that the protein expression of CREB1 was positively correlated with the transcript level and protein expression of wtBRAF. It is reasonable to speculate that CREB1 may activate the transcription of wtBRAF through directly binding to its promoter, increasing BRAF expression and regulating the cell proliferation, migration and invasion of endometriosis.
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Copy and paste a formatted citation
Spandidos Publications style
Lv X, Wang D, Ma Y and Long Z: Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis. Int J Mol Med 41: 1349-1356, 2018.
APA
Lv, X., Wang, D., Ma, Y., & Long, Z. (2018). Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis. International Journal of Molecular Medicine, 41, 1349-1356. https://doi.org/10.3892/ijmm.2017.3342
MLA
Lv, X., Wang, D., Ma, Y., Long, Z."Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis". International Journal of Molecular Medicine 41.3 (2018): 1349-1356.
Chicago
Lv, X., Wang, D., Ma, Y., Long, Z."Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis". International Journal of Molecular Medicine 41, no. 3 (2018): 1349-1356. https://doi.org/10.3892/ijmm.2017.3342
Copy and paste a formatted citation
x
Spandidos Publications style
Lv X, Wang D, Ma Y and Long Z: Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis. Int J Mol Med 41: 1349-1356, 2018.
APA
Lv, X., Wang, D., Ma, Y., & Long, Z. (2018). Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis. International Journal of Molecular Medicine, 41, 1349-1356. https://doi.org/10.3892/ijmm.2017.3342
MLA
Lv, X., Wang, D., Ma, Y., Long, Z."Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis". International Journal of Molecular Medicine 41.3 (2018): 1349-1356.
Chicago
Lv, X., Wang, D., Ma, Y., Long, Z."Analysis of the oncogene BRAF mutation and the correlation of the expression of wild-type BRAF and CREB1 in endometriosis". International Journal of Molecular Medicine 41, no. 3 (2018): 1349-1356. https://doi.org/10.3892/ijmm.2017.3342
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