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α-Fodrin-CENP-E interaction is critical for pancreatic cancer progression and drug response

  • 0Department of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
Cell Cycle +

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April 11, 2025

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April 11, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Alpha-fodrin (SPTAN1) promotes pancreatic cancer by interacting with CENP-E to regulate mitosis and aneuploidy. Its depletion enhances apoptosis and improves response to paclitaxel chemotherapy.

Area Of Science

  • Molecular Biology
  • Cancer Research
  • Cell Biology

Background

  • Alpha-fodrin (SPTAN1) is a scaffolding protein involved in various cellular functions.
  • Previous studies indicated a role for alpha-fodrin in mitosis in glioblastoma.
  • Pancreatic cancer is characterized by mitotic aberrations like aneuploidy and chromosome instability.

Purpose Of The Study

  • To investigate the role of alpha-fodrin in pancreatic cancer progression and its relationship with CENP-E.
  • To elucidate the molecular mechanisms underlying alpha-fodrin's function in pancreatic cancer.
  • To assess the impact of alpha-fodrin on pancreatic cancer cell response to paclitaxel.

Main Methods

  • Expression analysis of alpha-fodrin in pancreatic adenocarcinoma tissues.
  • shRNA-mediated knockdown of alpha-fodrin in pancreatic cancer cells and xenograft models.
  • Co-immunoprecipitation to study alpha-fodrin and CENP-E interaction.
  • Analysis of aneuploidy, apoptosis markers (BCL2/BAX ratio, cytochrome C release), and MAPK pathway activation (JNK, ERK, P38).
  • Correlation analysis between gene expression (SPTAN1, CENP-E) and patient survival.

Main Results

  • Alpha-fodrin expression is elevated in pancreatic adenocarcinoma, suggesting a tumor-promoting role.
  • Knockdown of alpha-fodrin significantly inhibits xenograft tumor growth.
  • Alpha-fodrin interacts with CENP-E, recruiting it to the kinetochore and controlling aneuploidy.
  • Alpha-fodrin depletion enhances paclitaxel-induced apoptosis via increased MAPK activation and altered BCL2/BAX ratios.
  • Low expression of SPTAN1 and CENP-E correlates with improved patient survival.

Conclusions

  • The alpha-fodrin-CENP-E axis is a key regulator of pancreatic cancer progression.
  • Alpha-fodrin plays a critical role in maintaining chromosomal stability during mitosis.
  • Targeting alpha-fodrin may enhance the efficacy of chemotherapeutic agents like paclitaxel in pancreatic cancer treatment.

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