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The early manifestation, tumor-specific occurrence and prognostic significance of TGFBR2 aberrant splicing in oral carcinoma.

Abstract：

:Alternative splicing is an important mechanism that can disrupt cell cycle control resulting in tumorigenesis. Although many alterations of Transforming Growth Factor Beta (TGFβ) signaling are reported in cancers, the role of splice aberrations in destabilizing this signaling is the least understood mechanism. In this study, we compared TGFBR2 alternative splicing events in potentially malignant oral disorders (PMDs) and oral squamous cell carcinoma (OSCC) samples with those in normal samples. Interestingly, there were five alternatively spliced forms of TGFBR2 with a deficient kinase domain in OSCCs. The TGFBR2 aberrant splicing was tumor-specific, suggesting that selective splicing out of TGFBR2 kinase domain could be a mechanism misused by cancer cells for evading TGFβ signaling-mediated anti-tumor activities. Moreover, these aberrant transcripts were present in PMDs as well, suggesting an early occurrence of these events during oral carcinogenesis and offering the possibility of early diagnosis of malignancy. Furthermore, OSCC patients who harbored these aberrantly spliced transcripts exhibited poor disease free survival (p=0.028) and poor overall survival (p=0.013). Thus, assessing the presence of these TGFBR2 transcripts can serve as a prognostic marker for oral cancer.

journal_name

Exp Cell Res

journal_title

Experimental cell research

authors

Sivadas VP,Gulati S,Varghese BT,Balan A,Kannan S

doi

10.1016/j.yexcr.2014.05.004

subject

Has Abstract

pub_date

2014-09-10 00:00:00

pages

156-62

issue

1

eissn

0014-4827

issn

1090-2422

pii

S0014-4827(14)00195-5

journal_volume

327

pub_type

杂志文章

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