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Characterization of a human ?V-tubulin antibody and expression of this isotype in normal and malignant human tissue.


ABSTRACT: There are seven distinct ?-tubulin isotypes and eight ?-tubulin isotypes in mammals that are hypothesized to have tissue- and cell-specific functions. There is an interest in the use of tubulin isotypes as prognostic markers of malignancy. ?V-tubulin, like ?III-tubulin, has been implicated in malignant transformation and drug resistance, however little is known about its localization and function. Thus, we generated for the first time, a rabbit polyclonal antibody specific for human ?V-tubulin. The antibody did not cross-react with mouse ?V-tubulin or other human ?-tubulin isotypes and specifically labeled ?V-tubulin by immunoblotting, immunofluorescence and immunohistochemistry. Immunohistochemistry of various human normal tissues revealed that ?V-tubulin was expressed in endothelial cells, myocytes and cells with muscle differentiation, structures with transport and/or secretory function such as renal tubules, pancreatic ducts and bile ducts, and epithelium with secretory function such as prostate. ?V-tubulin was also specifically expressed in pancreatic islets and intratubular germ cell neoplasia, where it may have diagnostic utility. Initial studies in breast, lung and ovarian cancers indicated aberrant expression of ?V-tubulin, suggesting that this isoform may be associated with tumorigenesis. Thus, ?V-tubulin expression is a potentially promising prognostic marker of malignancy.

SUBMITTER: Chao SK 

PROVIDER: S-EPMC3870480 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature

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Characterization of a human βV-tubulin antibody and expression of this isotype in normal and malignant human tissue.

Chao Suzan K SK   Wang Yihong Y   Verdier-Pinard Pascal P   Yang Chia-Ping H CP   Liu Lingling L   Rodriguez-Gabin Alicia A   McDaid Hayley M HM   Horwitz Susan Band SB  

Cytoskeleton (Hoboken, N.J.) 20120702 8


There are seven distinct β-tubulin isotypes and eight α-tubulin isotypes in mammals that are hypothesized to have tissue- and cell-specific functions. There is an interest in the use of tubulin isotypes as prognostic markers of malignancy. βV-tubulin, like βIII-tubulin, has been implicated in malignant transformation and drug resistance, however little is known about its localization and function. Thus, we generated for the first time, a rabbit polyclonal antibody specific for human βV-tubulin.  ...[more]

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