S100B protein in tissue development,repair and regeneration

• 作者: Cataldo Arcuri Claudia Tubaro Francesca Riuzzi Guglielmo Sorci Ileana Giambanco Roberta Bianchi Rosario Donato
• 来源期刊: 世界生物化学杂志：英文版（电子版）
• 学科: 医学
• 关键词: S100B CELL proliferation CELL differentiation CELL survival CELL MOTILITY DEVELOPMENT TISSUE homeostasis TISSUE REPAIR TISSUE REGENERATION
• 年，卷（期）: 2013,（1）
• 页码范围: 1-12
• 页数: 12页
• 分类号: R341

摘要

The Ca 2+-binding protein of the EF-hand type,S100B,exerts both intracellular and extracellular regulatory activities.As an intracellular regulator,S100B is involved in the regulation of energy metabolism,transcription,protein phosphorylation,cell proliferation,survival,differentiation and motility,and Ca 2+ homeostasis,by interacting with a wide array of proteins(i.e.,enzymes,enzyme substrates,cytoskeletal subunits,scaffold/adaptor proteins,transcription factors,ubiquitin E3 ligases,ion channels) in a restricted number of cell types.As an extracellular signal,S100B engages the pattern recognition receptor,receptor for advanced glycation end-products(RAGE),on immune cells as well as on neuronal,astrocytic and microglial cells,vascular smooth muscle cells,skeletal myoblasts and cardiomyocytes.However,RAGE may not be the sole receptor activated by S100B,the protein being able to enhance bFGF-FGFR1 signaling by interacting with FGFR1-bound bFGF in particular cell types.Moreover,extracellular effects of S100B vary depending on its local concentration.Increasing evidence suggests that at the concentration found in extracellular fluids in normal physiological conditions and locally upon acute tissue injury,which is up to a few nM levels,S100B exerts trophic effects in the central and peripheral nervous system and in skeletal muscle tissue thus participating in tissue homeostasis.The present commentary summarizes results implicating intracellular and extracellular S100B in tissue development,repair and regeneration.