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The effect of colchicine on pyrin and pyrin interacting proteins

Ekim Z Taskiran1, Arda Cetinkaya, Banu Balci-Peynircioglu

  • 1Department of Medical Biology, Hacettepe University, Ankara, Turkey.

Journal of Cellular Biochemistry
|June 26, 2012
PubMed

Insights

Colchicine, a treatment for familial Mediterranean fever (FMF), impacts pyrin and its related proteins. This study reveals colchicine affects actin cytoskeleton organization and MEFV gene expression, potentially explaining its efficacy in FMF.

Area of Science:

  • Molecular Biology
  • Immunology
  • Cell Biology

Background:

  • Familial Mediterranean fever (FMF) is the most common autoinflammatory disease, caused by mutations in the MEFV gene encoding pyrin.
  • Pyrin's role in inflammation regulation is not fully understood, and the precise mechanism of colchicine's efficacy in FMF is unclear.
  • Colchicine, a microtubule inhibitor, is a highly effective prophylactic treatment for FMF.

Purpose of the Study:

  • To investigate the specific cellular mechanisms underlying colchicine's efficacy in FMF.
  • To explore the potential direct effects of colchicine on pyrin and its interacting proteins.
  • To elucidate the connection between colchicine, pyrin, and the MEFV gene.

Main Methods:

  • Investigated the effect of colchicine on PSTPIP1 filaments and ASC speck formation in transfected cells.
  • Analyzed MEFV gene expression in THP-1 cells treated with colchicine.
  • Examined the impact of colchicine on the actin cytoskeleton organization in THP-1 cells.

Main Results:

  • Colchicine treatment inhibited the formation of reticulated fibrils by PSTPIP1 filaments and reduced ASC speck rates.
  • Colchicine was found to down-regulate MEFV gene expression in THP-1 cells.
  • Colchicine induced significant re-organization of the actin cytoskeleton in THP-1 cells, where pyrin is an actin-binding protein.

Conclusions:

  • Colchicine's efficacy in FMF may be linked to its effects on pyrin-interacting proteins and the actin cytoskeleton.
  • Down-regulation of MEFV expression by colchicine, potentially mediated by actin cytoskeleton changes, could explain its therapeutic benefit.
  • This study highlights a novel connection between colchicine and pyrin, offering insights into FMF pathogenesis and treatment.

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