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WAVE3 is associated with invasiveness in prostate cancer cells

Fernando, Herman S., Sanders, Andrew James ORCID:, Kynaston, Howard ORCID: and Jiang, Wen Guo ORCID: 2010. WAVE3 is associated with invasiveness in prostate cancer cells. Urologic Oncology: Seminars and Original Investigations 28 (3) , pp. 320-327. 10.1016/j.urolonc.2008.12.022

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Introduction Wiskott-Aldrich syndrome verprolin-homologous 3 (WAVE3) belongs to Wiskott-Aldrich syndrome family proteins (WASP), which, along with other members, play a critical role in the regulation of actin polymerization and cell motility. We investigated the expression pattern and the effects of manipulating endogenous WAVE3 expression in prostate cancer cells. Materials and methods Reverse transcriptase-polymerase chain reaction (RT-PCR) of prostate cell lines and immunohistochemical staining of normal and cancer specimens for WAVE3 proteins were done. WAVE3 knockdown clones were synthesized using hammerhead ribozyme transgenes and transfected by electroporation into DU-145 and PC-3 cells. The impact of WAVE3 knockdown was studied using in vitro functional assays. Results RT-PCR for WAVE3 showed strong expression in both PC-3 and DU-145 cell lines. Immunohistochemistry of prostate tissue specimens showed that the cytoplasm of cancer cells had stronger staining than normal epithelium. The mean [(±standard error of mean (SEM)] invading cell number for PC-3ΔW3R1 and PC-3ΔW3R2 was 5.06 (±0.42) and 6.33 (±0.19), respectively, compared with PC-3WT (12.27 ± 0.42; P < 0.001). Similarly, the mean (±SEM) invading cell numbers for DU-145ΔW3R1 and DU-145ΔW3R2 were 10.80 (±1.33) and 10.20 (±0.86) compared with DU-145WT (14.80 ± 0.24, P < 0.05). No significant differences were observed in the adhesiveness and proliferation between the knockdown mutants and the wild types. Conclusions This is the first report on the expression patterns and the functions of WAVE3 in prostate cancer cell lines. This study shows that WAVE3 is pivotal in controlling the invasiveness of prostate cancer cells. Further work is needed to assess WAVE3 as a potential marker for predicting tumor aggressiveness.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)
Uncontrolled Keywords: Prostate; Prostatic neoplasms; WASF; WASP; WAVE
Publisher: Elsevier
ISSN: 1078-1439
Last Modified: 19 Oct 2022 10:49

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