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An Orthotopic Murine Model of Human Prostate Cancer Metastasis
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An Orthotopic Murine Model of Human Prostate Cancer Metastasis

Published on: September 18, 2013

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NOLC1 knockdown suppresses prostate cancer progressions by reducing AKT phosphorylation and β-catenin accumulation

Wansoo Kim1, Dong-Yeop Yeo2, Seong-Kyoon Choi3

  • 1Division of Biotechnology, DGIST, Daegu, Republic of Korea; School of Life Science, BK21 FOUR KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.

Biochemical and Biophysical Research Communications
|October 20, 2022
PubMed

Insights

Nucleolar and coiled-body phosphoprotein 1 (NOLC1) knockdown inhibits prostate cancer (PC) cell growth by disrupting cell cycle progression and altering key signaling pathways. This suggests NOLC1 as a potential therapeutic target for treating advanced prostate cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Prostate cancer (PC) remains a significant clinical challenge, with castration-resistant PC (CRPC) often developing after androgen deprivation therapy (ADT).
  • Androgen receptor (AR) mutations are frequently observed in CRPC, highlighting the need for novel therapeutic targets.
  • Nucleolar and coiled-body phosphoprotein 1 (NOLC1) is implicated in PC progression, but its precise role and underlying mechanisms are not fully understood.

Purpose of the Study:

  • To investigate the role of NOLC1 in prostate cancer progression and elucidate the molecular mechanisms by which it influences cancer cell behavior.
  • To determine if NOLC1 could serve as a potential therapeutic target for both androgen receptor-positive and androgen receptor-negative prostate cancer.

Main Methods:

  • NOLC1 knockdown was performed in prostate cancer cells to assess its impact on cell proliferation and cell cycle progression.
  • Analysis of signaling pathways, including AKT phosphorylation and β-catenin accumulation, was conducted.
  • Gene expression profiling was used to identify proteins and pathways affected by NOLC1 modulation.
  • NOLC1 expression levels were compared between human PC tissues and hyperplastic prostate tissues.

Main Results:

  • NOLC1 knockdown significantly suppressed prostate cancer cell proliferation.
  • Suppression of cell cycle progression was observed, linked to inhibited AKT phosphorylation and reduced β-catenin levels.
  • Altered expression of proteins involved in DNA replication, amino acid metabolism, and RNA processing was noted.
  • NOLC1 expression was found to be elevated in human PC tissues compared to hyperplastic controls.

Conclusions:

  • NOLC1 knockdown effectively inhibits the progression of both AR-positive and AR-negative prostate cancer cells.
  • The mechanism involves inducing changes in gene expression that lead to cell cycle arrest.
  • NOLC1 represents a promising novel therapeutic target for prostate cancer treatment.
Keywords:
AKTNOLC1Prostate cancerProteomicsβ-Catenin

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