Gardelli, Cecilia; Russo, Laura; Cipolla, Laura; Moro, Massimo; Andriani, Francesca; Rondinone, Ornella; Nicotra, Francesco; Sozzi, Gabriella; Bertolini, Giulia; Roz, Luca published the artcile< Differential glycosylation of collagen modulates lung cancer stem cell subsets through β1 integrin-mediated interactions>, COA of Formula: C6H12O6, the main research area is beta1 integrin collagen glycosylation lung cancer; cancer stem cells; collagen; glycans; lung cancer; tumor-extracellular matrix interactions.
In lung cancer, CD133+ cells represent the subset of cancer stem cells (CSC) able to sustain tumor growth and metastatic dissemination. CSC function is tightly regulated by specialized niches composed of both stromal cells and extracellular matrix (ECM) proteins, mainly represented by collagen. The relevance of collagen glycosylation, a fundamental post-translational modification controlling several biol. processes, in regulating tumor cell phenotype remains, however, largely unexplored. To investigate the bioactive effects of differential ECM glycosylation on lung cancer cells, we prepared collagen films functionalized with glucose (Glc-collagen) and galactose (Gal-collagen) exploiting a neoglycosylation approach based on a reductive amination of maltose and lactose with the amino residues of collagen lysines. We demonstrate that culturing of tumor cells on collagen determines a glycosylation-dependent pos. selection of CSC and triggers their expansion/generation. The functional relevance of CD133+ CSC increase was validated in vivo, proving an augmented tumorigenic and metastatic potential. High expression of integrin β1 in its active form is associated with an increased proficiency of tumor cells to sense signaling from glycosylated matrixes (glyco-collagen) and to acquire stemness features. Accordingly, inhibition of integrin β1 in tumor cells prevents CSC enrichment, suggesting that binding of integrin β1 to Glc-collagen subtends CSC expansion/generation. We provide evidence suggesting that collagen glycosylation could play an essential role in modulating the creation of a niche favorable for the generation and selection/survival of lung CSC. Interfering with this crosstalk may represent an innovative therapeutic strategy for lung cancer treatment.
Cancer Science published new progress about Activated leukocyte cell adhesion molecules Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, COA of Formula: C6H12O6.
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