CSPGs CSPGs CSPG is secreted Authored: Jassal, B, 2011-12-01 Edited: Jassal, B, 2011-12-01 Once chondroitin sulfate proteoglycans (CSPGs) are formed (can be either C4S-PG, C6S-PG or CSE-PG), they are secreted out into the extracellular matrix (ECM) via the trans-golgi network (Fransson et al. 2000). Pubmed10963998 Reactome Database ID Release 432022911 Reactome, http://www.reactome.org ReactomeREACT_120998 Reviewed: D'Eustachio, P, 2012-03-28