The 1ALCTL and 1BLCTL isoforms of Arg/Abl2 induce fibroblast activation and extra cellular matrix remodelling differently

Biology Open

卷:8

Barbara Torsello¹  Sofia De Marco¹  Davide Bernasconi¹  Roberto A. Perego¹  Silvia Bombelli¹  Roberto Giovannoni¹  Elisa Chisci¹  Cristina Bianchi¹  Valeria Cassina¹  Roberta Corti¹ 

[1] School of Medicine & Surgery, University of Milano-Bicocca, 20900 Monza, Italy;

关键词: Arg;    Abl2;    Non-receptor tyrosine kinase;    Fibroblast;    Extra cellular matrix;    Stroma remodelling;   

DOI  :  10.1242/bio.038554

来源: DOAJ

【 摘 要 】

The fibrotic tissue and the stroma adjacent to cancer cells are characterised by the presence of activated fibroblasts (myofibroblasts) which play a role in creating a supportive tissue characterised by abundant extracellular matrix (ECM) secretion. The myofibroblasts remodel this tissue through secreted molecules and modulation of their cytoskeleton and specialized contractile structures. The non-receptor protein tyrosine kinase Arg (also called Abl2) has the unique ability to bind directly to the actin cytoskeleton, transducing diverse extracellular signals into cytoskeletal rearrangements. In this study we analysed the 1ALCTL and 1BLCTL Arg isoforms in Arg−/− murine embryonal fibroblasts (MEF) cell line, focusing on their capacity to activate fibroblasts and to remodel ECM. The results obtained showed that Arg isoform 1BLCTL has a major role in proliferation, migration/invasion of MEF and in inducing a milieu able to modulate tumour cell morphology, while 1ALCTL isoform has a role in MEF adhesion maintaining active focal adhesions. On the whole, the presence of Arg in MEF supports the proliferation, activation, adhesion, ECM contraction and stiffness, while the absence of Arg affected these myofibroblast features. This article has an associated First Person interview with the first author of the paper.

【 授权许可】

Unknown