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Neogenin expression may be inversely correlated to the tumorigenicity of human breast cancer

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Authors
Lee, Jeong Eon; Kim, Hee Joung; Bae, Ji Yeon; Kim, Seok Won; Park, Joon-Suk; Shin, Hyuk Jai; Han, Wonshik; Kim, Sung-Won; Kang, Kyung-Sun; Noh, Dong-Young
Issue Date
2005-12-06
Publisher
BioMed Central
Citation
BMC Cancer. 2005 Dec 3;5:154
Keywords
Blotting, WesternBreast/*metabolism/pathologyBreast Neoplasms/*metabolism/*pathologyCell LineCell Line, TumorEpithelial Cells/metabolism*Gene Expression Regulation, NeoplasticHumansImmunohistochemistryMembrane Proteins/*biosynthesisModels, StatisticalNeoplasm MetastasisPrognosisTissue DistributionTumor Markers, Biological/biosynthesis
Abstract
BACKGROUND: Neogenin is expressed in cap cells that have been suggested to be mammary stem or precursor cells. Neogenin is known to play an important role in mammary morphogenesis; however its relationship to tumorigenesis remains to be elucidated. METHODS: To compare the expression levels of neogenin in cells with different tumorigenicity, the expression levels in M13SV1, M13SV1R2 and M13SV1R2N1 cells, which are immortalized derivatives of type I human breast epithelial cells, were evaluated. Then we measured the expression level of neogenin in paired normal and cancer tissues from eight breast cancer patients. Tissue array analysis was performed for 54 human breast tissue samples with different histology, and the results were divided into four categories (none, weak, moderate, strong) by a single well-trained blinded pathologist and statistically analyzed. RESULTS: The nontumorigenic M13SV1 cells and normal tissues showed stronger expression of neogenin than the M13SV1R2N1 cells and the paired cancer tissues. In the tissue array, all (8/8) of the normal breast tissues showed strong neogenin expression, while 93.5% (43/46) of breast cancer tissues had either no expression or only moderate levels of neogenin expression. There was a significant difference, in the expression level of neogenin, in comparisons between normal and infiltrating ductal carcinoma (p < 0.001). CONCLUSION: Neogenin may play a role in mammary carcinogenesis as well as morphogenesis, and the expression may be inversely correlated with mammary carcinogenicity. The value of neogenin as a potential prognostic factor needs further evaluation.
ISSN
1471-2407 (Electronic)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=16324219

http://hdl.handle.net/10371/11786
DOI
https://doi.org/10.1186/1471-2407-5-154
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College of Medicine/School of Medicine (의과대학/대학원)Surgery (외과학전공)Journal Papers (저널논문_외과학전공)
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