TI: |
Title
Cell adhesion and prostate tumor-suppressor activity of TSLL2/IGSF4C, an immunoglobulin superfamily molecule homologous to TSLC1/IGSF4 |
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Author
Williams, YN; Masuda, M; Sakurai-Yageta, M; Maruyama, T; Shibuya, M; Murakami, Y |
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Author Affiliation
Tumor Suppression and Functional Genomics Project, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan, ymurakam@gan2.ncc.go.jp |
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Source
Oncogene [Oncogene]. Vol. 25, no. 10, pp. 1446-1453. 9 Mar 2006 |
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ISSN
0950-9232 |
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Descriptors
Prostate cancer; Immunoglobulins; Cell adhesion; IGSF4 protein; Urinary bladder; renal tubules; Brain; Cell adhesion molecules; Calcium; Confocal microscopy; Loss of heterozygosity; Homology |
AB: |
Abstract
The TSLL2/IGSF4C encodes an immunoglobulin (Ig) superfamily molecule showing significant homology with a lung tumor suppressor, TSLC1. The TSLL2 protein of 55kDa is mainly expressed in the kidney, bladder, and prostate in addition to the brain. Here, we report the biological significance of TSLL2 in the urinary tissues. An immunohistochemical study reveals that TSLL2 is expressed at the cell-cell attachment sites in the renal tubules, the transitional epithelia of the bladder, and the glandular epithelia of the prostate. Confocal microscopy analysis demonstrates that TSLL2 is localized in the lateral membranes in polarized Mardin-Darby canine kidney (MDCK) cells. TSLL2 forms homo-dimers and its overexpression induces aggregation of suspended MDCK cells in a Ca super(2+)/Mg super(2+)-independent manner, suggesting that it is involved in cell adhesion through homophilic trans-interaction. The TSLL2 gene is mapped on the chromosomal region 19q13.2, whose loss of heterozygosity has been frequently reported in prostate cancer. TSLL2 protein is lost in nine of nine primary prostate cancers and in a prostate cancer cell, PPC-1. Introduction of TSLL2 into PPC-1 strongly suppresses subcutaneous tumor formation in nude mice. These results suggest that TSLL2 is a new member of the Ig superfamily cell adhesion molecules and is a tumor-suppressor candidate in prostate cancer. |
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Language
English |
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Summary Language
English |
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Publication Year
2006 |
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Publication Type
Journal Article |
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Publisher
Nature Publishing Group, The Macmillan Building, 4 Crinan Street, London
N1 9XW, UK, feedback@nature.com, http://www.nature.com/
|
DO: |
DOI
10.1038/sj.onc.1209192 |
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Classification
B 26416 Other tumor suppressor genes/antioncogenes |
UD: |
Update
200605 |
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Subfile
Oncogenes & Growth Factors Abstracts |
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Accession Number
6759117 |
PG: |
Journal Pages
1446-1453 |
JV: |
Journal Volume
25 |
JI: |
Journal Issue
10 |