Genetic variants in the TGF&#x03B2;-signaling pathway influence expression of miRNAs in colon and rectal normal mucosa and tumor tissue

Martha L. Slattery; Andromahi Trivellas; Andrew J. Pellatt; Lila E. Mullany; John R. Stevens; Roger K. Wolff; Jennifer S. Herrick

doi:10.18632/oncotarget.14508

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Research Papers:

Genetic variants in the TGFβ-signaling pathway influence expression of miRNAs in colon and rectal normal mucosa and tumor tissue

Martha L. Slattery _, Andromahi Trivellas, Andrew J. Pellatt, Lila E. Mullany, John R. Stevens, Roger K. Wolff and Jennifer S. Herrick

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Oncotarget. 2017; 8:16765-16783. https://doi.org/10.18632/oncotarget.14508

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Abstract

Martha L. Slattery1, Andromahi Trivellas2, Andrew J. Pellatt2, Lila E. Mullany1, John R. Stevens3, Roger K. Wolff1, Jennifer S. Herrick1

1Department of Medicine, University of Utah, Salt Lake City, Utah, USA

2Tulane Medical School, New Orleans, Louisiana, USA

3Department of Mathematics and Statistics, Utah State University, Logan, Utah, USA

Correspondence to:

Martha L. Slattery, email: [email protected]

Keywords: colorectal cancer, miRNA, TGF-β, eIF4E, SMAD

Received: October 13, 2016 Accepted: December 16, 2016 Published: January 05, 2017

ABSTRACT

The TGF-β signaling pathway is involved in regulation of cell growth, angiogenesis, and metastasis. We test the hypothesis that genetic variation in the TGF-β signaling pathway alters miRNA expression.

We use data from 1188 colorectal cancer cases to evaluate associations between 80 SNPs in 21 genes.

Seven variants eIF4E rs12498533, NFκB1 rs230510, TGFB1 rs4803455, TGFBR1 rs1571590 and rs6478974, SMAD3 rs3743343, and RUNX1 rs8134179 were associated with expression level of miRNAs in normal colorectal mucosa. RUNX2 rs12333172 and BMPR1B rs13134042 were associated with miRNAs in normal colon mucosa; eIF4EBP3 rs250425, SMAD3 rs12904944, SMAD7 rs3736242, and PTEN rs532678 were associated with miRNA expression in normal rectal mucosa. Evaluation of the differential expression between carcinoma and normal mucosa showed that SMAD3 rs12708491 and rs2414937, NFκB1 rs230510 and rs3821958, and RUNX3 rs6672420 were associated with several miRNAs for colorectal carcinoma. Evaluation of site-specific differential miRNA expression showed that BMPR1B rs2120834, BMPR2 rs2228545, and eIF4EBP3 rs250425 were associated with differential miRNA expression in colon tissue and SMAD3 rs12901071, rs1498506, and rs2414937, BMPR2 rs2228545, and RUNX2 rs2819854, altered differential miRNA expression in rectal tissue.

These data support the importance of the TGF-β signaling pathway to the carcinogenic process, possibly through their influence on miRNA expression levels.

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Research Papers:

Genetic variants in the TGFβ-signaling pathway influence expression of miRNAs in colon and rectal normal mucosa and tumor tissue

Abstract