Associations between a single nucleotide polymorphism of stress-induced phosphoprotein 1 and endometriosis/adenomyosis

• Main Authors: Chia-Lung Tsai (Author), Yun-Shien Lee (Author), Angel Chao (Author), Chih-Feng Yen (Author), Hsin-Shih Wang (Author), Tzu-Hao Wang (Author)
• Format: Book
• Published: Elsevier, 2018-04-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Objective: We have recently reported that stress-induced phosphoprotein 1 (STIP1) is over-expressed in endometriosis/adenomyosis tissues. STIP1 may also be involved in immune regulation, thus we attempted to study the association between STIP1 single nucleotide polymorphisms (SNPs) and endometriosis/adenomyosis. Materials and methods: Five STIP1 SNPs (rs7941773, rs2845597, rs4980524, rs2282490, and rs2236647) were selected for genotyping with matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) in 286 patients with endometriosis/adenomyosis and 288 healthy postmenopausal controls. In vitro studies included luciferase promoter reporter assays and western blot analysis for STIP1 and MMP9 proteins. Results: The frequency of the G allele at rs4980524 was significantly higher in patients with endometriosis/adenomyosis than in control women. The promoter reporter with rs4980524 GG genotype significantly increased luciferase activity than that with TT genotype in endometrial cancer RL95-2 cells, and the primary endometrial stromal cells carrying rs4980524 GG genotype expressed higher protein levels of STIP1 and MMP9 than those carrying the TT one. Conclusion: The G/G allele of STIP1 SNP rs4980524 is associated with the increased expression of STIP1 and MMP9 in endometriosis. Further validation in independent cohorts of endometriosis patients may prove its usefulness as a genetic risk maker for endometriosis/adenomyosis. Keywords: Endometriosis, SNP, STIP1

Item Description

1028-4559
10.1016/j.tjog.2018.03.001