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Updated: Sep 14, 2025

The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
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Published on: August 3, 2011

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K-Homology Splicing Regulatory Protein (KSRP) Augments Survival and Proliferation of Human Melanoma Cells

Harunur Rashid1, Mohammad Asif Sherwani1, Jung Vin Seo1

  • 1Department of Dermatology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA.

Current Issues in Molecular Biology
|July 23, 2025
PubMed

Insights

Inhibiting the K-homology-type splicing regulatory protein (KSRP) significantly reduces melanoma cell migration, proliferation, and tumor growth while increasing cell death. This finding offers potential new therapeutic targets for aggressive melanoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • Melanoma is an aggressive cancer with limited effective treatments due to therapy resistance.
  • K-homology-type splicing regulatory protein (KSRP) is implicated in post-transcriptional gene regulation in melanoma.
  • KSRP binds to AU-rich elements in the 3'-UTR of target mRNAs.

Purpose of the Study:

  • To investigate the role of KSRP in melanoma cell migration, colony formation, apoptosis, and tumorigenicity.
  • To evaluate KSRP's impact on key cellular processes in human melanoma cell lines.

Main Methods:

  • KSRP was inhibited using lentiviral short hairpin RNA (lenti-shRNA) in A375 and SK-MEL-28 human melanoma cell lines.
  • Effects of KSRP knockdown on cell migration, colony formation, proliferation, apoptosis, and tumorigenicity were assessed.

Main Results:

  • KSRP knockdown led to significant decreases in melanoma cell migration, colony formation, proliferation, and tumorigenicity.
  • A substantial increase in apoptosis was observed in KSRP-inhibited melanoma cells.

Conclusions:

  • KSRP plays a critical role in regulating melanoma cell migration, colony formation, proliferation, and tumorigenicity.
  • These findings highlight KSRP as a potential therapeutic target for human melanoma.
Keywords:
KSRPRNA-binding proteinmRNA-decaymelanoma

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