Substrate elasticity does not impact DNA methylation changes during differentiation of pluripotent stem cells.
Cytotherapy
; 2024 Mar 30.
Article
em En
| MEDLINE
| ID: mdl-38583169
ABSTRACT
BACKGROUND AIMS:
Substrate elasticity may direct cell-fate decisions of stem cells. However, it is largely unclear how matrix stiffness affects the differentiation of induced pluripotent stem cells (iPSCs) and whether this is also reflected by epigenetic modifications.METHODS:
We cultured iPSCs on tissue culture plastic (TCP) and polydimethylsiloxane (PDMS) with different Young's modulus (0.2 kPa, 16 kPa or 64 kPa) to investigate the sequel on growth and differentiation toward endoderm, mesoderm and ectoderm.RESULTS:
Immunofluorescence and gene expression of canonical differentiation markers were hardly affected by the substrates. Notably, when we analyzed DNA methylation profiles of undifferentiated iPSCs or after three-lineage differentiation, we did not see any significant differences on the three different PDMS elasticities. Only when we compared DNA methylation profiles on PDMS-substrates versus TCP we did observe epigenetic differences, particularly on mesodermal differentiation.CONCLUSIONS:
Stiffness of PDMS substrates did not affect directed differentiation of iPSCs, whereas the moderate epigenetic differences on TCP might also be attributed to other chemical parameters.
Texto completo:
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Bases de dados:
MEDLINE
Idioma:
En
Revista:
Cytotherapy
Assunto da revista:
TERAPEUTICA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Alemanha