DCN and glioblastoma: Collagen VI, a promoter of tumorigenesis (Chen et al., 2013) and a supporter of stem cell niches (Urciuolo et al., 2013), also functions as an autophagy inducer in skeletal muscle stem cells by functionally interacting with decorin, a small leucin-rich proteoglycans (SLRP) that has been shown to induce stemness in glioblastoma (Farace et al., 2015).