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CaT1 expression correlates with tumor grade in prostate cancer
J B Peng1, L Zhuang, U V Berger
1Membrane Biology Program, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, 02115, USA.
Biochemical and Biophysical Research Communications
|June 13, 2001
Summary
The calcium channel CaT1 is highly expressed in prostate cancer (PCa) and linked to disease progression. Androgen suppresses CaT1, suggesting it
Area of Science:
- Molecular Biology
- Urology
- Cancer Research
Background:
- Calcium (Ca2+) signaling plays a critical role in the growth and survival of prostate cancer (PCa) cells.
- The CaT1 channel protein, selective for Ca2+, is a potential factor in PCa pathogenesis.
Purpose of the Study:
- To investigate the expression and regulation of the CaT1 gene in prostate cancer.
- To determine the potential of CaT1 as a therapeutic target for PCa.
Main Methods:
- Quantitative analysis of CaT1 mRNA levels in human PCa and benign prostatic hyperplasia (BPH) specimens.
- Correlation analysis of CaT1 mRNA levels with Gleason grade.
- In vitro studies using LNCaP PCa cells to assess androgen regulation of CaT1 expression.
Main Results:
- CaT1 gene expression is significantly elevated in human PCa tissues compared to BPH tissues.
- CaT1 mRNA levels positively correlate with higher Gleason grades in PCa.
- Androgen suppresses CaT1 expression in LNCaP cells, while an androgen receptor antagonist induces it.
Conclusions:
- The CaT1 calcium channel is implicated in prostate cancer progression.
- CaT1 represents a novel therapeutic target for prostate cancer treatment.