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RESEARCH PRODUCT

Bifunctional Hydrogels Containing the Laminin Motif IKVAV Promote Neurogenesis

Aleeza FarrukhFelipe OrtegaAránzazu Del CampoJulieta I. PaezBenedikt BerningerMarcelo SaliernoWenqiang FanNicolás Marichal

subject

0301 basic medicineCellular differentiationHYDROGELSCELL DIFFERENTIATION02 engineering and technologyBiochemistry//purl.org/becyt/ford/1 [https]MiceNeural Stem CellsIKVAVlcsh:QH301-705.5Cells Culturedlcsh:R5-920β(1)-integrinNeurogenesisHydrogelsMouse Embryonic Stem Cells021001 nanoscience & nanotechnologyNeural stem cellCell biologyStem celllcsh:Medicine (General)0210 nano-technologyCIENCIAS NATURALES Y EXACTASbiomaterialsPOLYLYSINENeurogenesisBiologyNEUROGENESISCiencias BiológicasFocal adhesion03 medical and health sciencesBiología Celular MicrobiologíalamininReportGeneticsΒ1-INTEGRINAnimalsProgenitor cell//purl.org/becyt/ford/1.6 [https]BIOMATERIALSCell adhesionFocal AdhesionsbioengineeringTissue Engineeringβ1-integrinCell BiologypolylysineNEURAL STEM CELLSMolecular biologyEmbryonic stem cellElasticityPeptide FragmentsBIOENGINEERINGLAMININMice Inbred C57BLcell differentiation030104 developmental biologylcsh:Biology (General)Developmental Biology

description

Summary Engineering of biomaterials with specific biological properties has gained momentum as a means to control stem cell behavior. Here, we address the effect of bifunctionalized hydrogels comprising polylysine (PL) and a 19-mer peptide containing the laminin motif IKVAV (IKVAV) on embryonic and adult neuronal progenitor cells under different stiffness regimes. Neuronal differentiation of embryonic and adult neural progenitors was accelerated by adjusting the gel stiffness to 2 kPa and 20 kPa, respectively. While gels containing IKVAV or PL alone failed to support long-term cell adhesion, in bifunctional gels, IKVAV synergized with PL to promote differentiation and formation of focal adhesions containing β1-integrin in embryonic cortical neurons. Furthermore, in adult neural stem cell culture, bifunctionalized gels promoted neurogenesis via the expansion of neurogenic clones. These data highlight the potential of synthetic matrices to steer stem and progenitor cell behavior via defined mechano-adhesive properties.

yearjournalcountryeditionlanguage
2017-11-01Stem Cell Reports
10.1016/j.stemcr.2017.09.002http://europepmc.org/articles/PMC5829305