S100A13 Participates in the Release of Fibroblast Growth Factor 1 in Response to Heat Shock in Vitro

  • Landriscina M
  • Soldi R
  • Bagalá C
 et al. 
  • 1


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


S100A13, a member of the S100 gene family of Ca 2+ -binding proteins has been previously characterized as a component of a brain-derived heparin-binding multiprotein aggregate/complex containing fibroblast growth factor 1 (FGF1). We report that while expression of S100A13 in NIH 3T3 cells results in the constitutive release of S100A13 into the extracellular compartment at 37 °C, co-expression of S100A13 with FGF1 represses the constitutive release of S100A13 and enables NIH 3T3 cells to release S100A13 in response to temperature stress. S100A13 release in response to stress occurs with kinetics similar to that observed for the stress-induced release of FGF1, but S100A13 expression is able to reverse the sensitivity of FGF1 release to inhibitors of transcription and translation. The release of FGF1 and S100A13 in response to heat shock results in the solubility of FGF1 at 100% (w/v) ammonium sulfate saturation, and the expression of a S100A13 deletion muta nt lacking its novel basic residue-rich domain acts as a dominant negative effector of FGF1 release in vitro. Surprisingly, the expression of S100A13 also results in the stress-induced release of a Cys-free FGF1 mutant, which is normally not released from NIH 3T3 cells in response to heat shock. These data suggest that S100A13 may be a component of the pathway for the release of the signal peptide-less polypeptide, FGF1, and may involve a role for S100A13, in the formation of a noncovalent FGF1 homodimer.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • M. Landriscina

  • R. Soldi

  • C. Bagalá

  • I. Micucci

  • S. Bellum

  • F. Tarantini

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free