PMID- 23637968 OWN - NLM STAT- MEDLINE DCOM- 20131226 LR - 20220310 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 8 IP - 4 DP - 2013 TI - Tenascin C promiscuously binds growth factors via its fifth fibronectin type III-like domain. PG - e62076 LID - 10.1371/journal.pone.0062076 [doi] LID - e62076 AB - Tenascin C (TNC) is an extracellular matrix protein that is upregulated during development as well as tissue remodeling. TNC is comprised of multiple independent folding domains, including 15 fibronectin type III-like (TNCIII) domains. The fifth TNCIII domain (TNCIII5) has previously been shown to bind heparin. Our group has shown that the heparin-binding fibronectin type III domains of fibronectin (FNIII), specifically FNIII12-14, possess affinity towards a large number of growth factors. Here, we show that TNCIII5 binds growth factors promiscuously and with high affinity. We produced recombinant fragments of TNC representing the first five TNCIII repeats (TNCIII1-5), as well as subdomains, including TNCIII5, to study interactions with various growth factors. Multiple growth factors of the platelet-derived growth factor (PDGF) family, the fibroblast growth factor (FGF) family, the transforming growth factor beta (TGF-beta) superfamily, the insulin-like growth factor binding proteins (IGF-BPs), and neurotrophins were found to bind with high affinity to this region of TNC, specifically to TNCIII5. Surface plasmon resonance was performed to analyze the kinetics of binding of TNCIII1-5 with TGF-beta1, PDGF-BB, NT-3, and FGF-2. The promiscuous yet high affinity of TNC for a wide array of growth factors, mediated mainly by TNCIII5, may play a role in multiple physiological and pathological processes involving TNC. FAU - De Laporte, Laura AU - De Laporte L AD - Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland. FAU - Rice, Jeffrey J AU - Rice JJ FAU - Tortelli, Federico AU - Tortelli F FAU - Hubbell, Jeffrey A AU - Hubbell JA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130418 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Insulin-Like Growth Factor Binding Proteins) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Neurotrophin 3) RN - 0 (Peptide Fragments) RN - 0 (Proto-Oncogene Proteins c-sis) RN - 0 (Recombinant Proteins) RN - 0 (Tenascin) RN - 0 (Transforming Growth Factor beta1) RN - 0 (VEGFA protein, human) RN - 0 (Vascular Endothelial Growth Factor A) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 1B56C968OA (Becaplermin) SB - IM MH - Becaplermin MH - Fibroblast Growth Factor 2/metabolism MH - HEK293 Cells MH - Humans MH - Insulin-Like Growth Factor Binding Proteins/metabolism MH - Intercellular Signaling Peptides and Proteins/*metabolism MH - Neurotrophin 3/metabolism MH - Peptide Fragments/metabolism MH - Protein Structure, Tertiary MH - Proto-Oncogene Proteins c-sis/*metabolism MH - Recombinant Proteins/metabolism MH - Surface Plasmon Resonance MH - Tenascin/*metabolism MH - Transforming Growth Factor beta1/metabolism MH - Vascular Endothelial Growth Factor A/metabolism PMC - PMC3630135 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2013/05/03 06:00 MHDA- 2013/12/27 06:00 PMCR- 2013/04/18 CRDT- 2013/05/03 06:00 PHST- 2012/10/26 00:00 [received] PHST- 2013/03/16 00:00 [accepted] PHST- 2013/05/03 06:00 [entrez] PHST- 2013/05/03 06:00 [pubmed] PHST- 2013/12/27 06:00 [medline] PHST- 2013/04/18 00:00 [pmc-release] AID - PONE-D-12-33038 [pii] AID - 10.1371/journal.pone.0062076 [doi] PST - epublish SO - PLoS One. 2013 Apr 18;8(4):e62076. doi: 10.1371/journal.pone.0062076. Print 2013.