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Using of Keratin Substrate for Enrichment of Ht29 Colorectal Cancer Stem-Like Cells Publisher Pubmed



Abbasian M1, 2 ; Mousavi E3 ; Khalili M4 ; Arabbafrani Z1, 5, 6
Authors

Source: Journal of Biomedical Materials Research - Part B Applied Biomaterials Published:2019


Abstract

Eradication of cancer stem-like cells (CSLCs) are becoming increasingly an important target for new cancer therapies. The ability to study their behavior in vitro will provide the opportunity for high-throughput testing of more effective treatments. In this study, spheroid-like structures’ formation and enrichment of HT29 CSLCs were evaluated on a wool keratin-based substrate as a bio-mimic of natural extracellular matrix (ECM) proteins. The results indicated that culturing on keratin substrate increased spheroid formation ability and radio-/chemoresistance of HT29 cells. Moreover, cell surface expression of CD133 CSLCs’ marker and the mRNA level of stemness genes such as Nanog, Oct4, and c-MYC were increased. These data suggest that keratin can potentially be used for spheroid-like structure formation and enrichment of HT29 CSLCs. In addition, it seems that the induction of stemness characteristics on keratin substrate is probably because of the activation of α 2 β 1 integrin signaling pathway. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1264–1271, 2019. © 2018 Wiley Periodicals, Inc.