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Expression of the apoptosis inhibitor livin in colorectal adenoma-carcinoma sequence: correlations with pathology and outcome
Sichuan University, Peoples R China.
Sichuan University, Peoples R China.
Sichuan University, Peoples R China.
Sichuan University, Peoples R China.
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2014 (English)In: Tumor Biology, ISSN 1010-4283, E-ISSN 1423-0380, Vol. 35, no 12, 11791-11798 p.Article in journal (Refereed) Published
Abstract [en]

The inhibitor of apoptosis family member livin is expressed in several types of cancer but not in most benign tissues, and it has been considered to be a poor prognostic mark in various malignancies. However, livin expression and its prognostic relevance have not been evaluated in colorectal adenoma-carcinoma sequence. In this study, we analyzed the difference of livin expression among normal mucosa, adenoma, and adenocarcinoma and investigated the relationship of livin expression in carcinomas with clinicopathological variables using immunohistochemistry and real-time reverse transcription-PCR. We observed that the expression of livin protein was mainly present on base of colorectal crypts in adenoma and throughout the epithelium in carcinoma, whereas did not present in accompanying normal mucosa, and the expression of livin messenger RNA (mRNA) in adenocarcinomas was significantly higher than in adenomas and in normalmucosa (P= 0.001, respectively), whereas, compared with normal mucosa, the expression level of livin mRNA was up-regulated in adenomas but no significant difference (P= 0.196). We also found that the expression levels of livin mRNA in rectal cancer was significantly higher than those in colonic cancer, and livin mRNA expression was strongly related to colorectal cancer invasive depth but not to clinical tumor stage, differentiation, lymph node metastasis, tumor morphological category and pathological type, and patients age and gender. These findings support the possibility that the livin gene may play a role in colorectal tumorigenesis, and increased expression of livin mRNA may serve as a new target for colorectal cancer treatment.

Place, publisher, year, edition, pages
Karger / Springer Verlag (Germany) , 2014. Vol. 35, no 12, 11791-11798 p.
Keyword [en]
Adenoma-carcinoma sequence; Apoptosis; Livin
National Category
Clinical Medicine
URN: urn:nbn:se:liu:diva-113580DOI: 10.1007/s13277-014-2307-0ISI: 000346863700012PubMedID: 25339450OAI: diva2:783029

Funding Agencies|China Medical Board State Key Laboratory of Biotherapy Department of General Surgery [CMB96636]

Available from: 2015-01-23 Created: 2015-01-23 Last updated: 2015-01-23

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Sun, Xiao-Feng
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Division of Clinical SciencesFaculty of Health SciencesDepartment of Oncology
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ReferencesLink to record
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