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Updated: Aug 9, 2026

Purification of Tubulin with Controlled Posttranslational Modifications and Isotypes from Limited Sources by Polymerization-Depolymerization Cycles
07:54

Purification of Tubulin with Controlled Posttranslational Modifications and Isotypes from Limited Sources by Polymerization-Depolymerization Cycles

Published on: November 5, 2020

Tubulin polymerization modulates interleukin-2 receptor signal transduction in human T cells

Jens Goebel1, Kathy Forrest, Marsha Wills-Karp

  • 1Department of Pediatrics, University of Kentucky, Lexington, Kentucky, USA. Jens.Goebel@cchmc

Journal of Receptor and Signal Transduction Research
|April 6, 2006
PubMed

Insights

Cytoskeletal changes, particularly tubulin polymerization, impact interleukin-2 receptor (IL-2R) signaling strength and receptor-cytoskeleton interactions in human T cells, influencing immune responses.

Area of Science:

  • Immunology
  • Cell Biology
  • Cytoskeletal Dynamics

Background:

  • Limited data exist on how the actin and tubulin cytoskeleton modulate cytokine receptor signaling.
  • Interleukin-2 receptor (IL-2R) signaling is crucial for T cell function.

Purpose of the Study:

  • To investigate the modulation of IL-2R signaling by cytoskeletal alterations.
  • To examine the relationship between tubulin and actin cytoskeleton dynamics and IL-2R signaling pathways.

Main Methods:

  • Studied IL-2R signaling in human T cells pretreated with phytohemagglutinin (PHA).
  • Induced cytoskeletal changes using cytochalasin D, jasplaklinolide, taxol, and colchicine.
  • Confirmed findings in TCR-transgenic mouse T cells stimulated with antigen.

Main Results:

  • Altered tubulin polymerization significantly changed the strength of IL-2-triggered signals.
  • Taxol-induced tubulin hyperpolymerization increased IL-2R beta-chain surface expression and its association with tubulin.
  • The IL-2R beta-chain showed constitutive association with tubulin and weaker association with actin.

Conclusions:

  • Cytoskeletal component polymerization, especially tubulin, modulates IL-2 signaling at the receptor level.
  • These findings highlight a direct link between cytoskeletal organization and immune receptor signaling in T cells.

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