4.6 Article

Connective tissue growth factor expression hints at aggressive nature of colorectal cancer

Journal

WORLD JOURNAL OF GASTROENTEROLOGY
Volume 28, Issue 5, Pages 547-569

Publisher

BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v28.i5.547

Keywords

Connective tissue growth factor; Quantitative real time polymerase chain reaction; Immunohistochemistry; Western blotting; Colorectal cancer

Funding

  1. Sher-I-Kashmir Institute of Medical Sciences, Srinagar Kashmir, India [SIMS/DF/17-467-73]

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CTGF expression is increased in colorectal cancer and is associated with patient prognosis.
BACKGROUND Connective tissue growth factor (CTGF) is a mediator of transforming growth factor-beta signaling and plays a key role in connective tissue remodeling, inflammatory processes and fibrosis in various illnesses including cancer. AIM To investigate the role of CTGF in colorectal cancer (CRC) progression and to compare the CTGF expression with different clinicopathological parameters. METHODS Real-time polymerase chain reaction, immunohistochemistry and Western blotting was performed to evaluate the CTGF expression and the results were statistically analyzed against the clinicopathological variables of patient data using STATA software version 16. RESULTS CTGF expression levels in tumor specimens were significantly higher than their paired normal specimens. The higher protein expression levels showed a significant association with smoking, staging, tumor grade, invasion depth, necrosis of tumor tissue, and both lymphovascular and perineural invasion. As per the cox regression model and classification tree analysis, tumor-node-metastasis stage and perineural invasion were important predictors for CTGF expression and prognosis of CRC patients. Survival analysis indicated that CTGF overexpression was associated with poorer overall and disease-free survival. CONCLUSION Expression of CTGF was increased in CRC and was linked with poor overall and disease-free survival of CRC patients. These findings support prior observations and thus CTGF may be a possible prognostic marker in CRC.

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