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Culturing C2C12 myotubes on micromolded gelatin hydrogels accelerates myotube maturation

ABSTRACT: Culturing C2C12 myotubes on micromolded gelatin hydrogels accelerates myotube maturation

PROVIDER: PRJNA625310 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11545700_1.fastq.gz	Fastqsanger.gz
	SRR11545700_2.fastq.gz	Fastqsanger.gz
	SRR11545701_1.fastq.gz	Fastqsanger.gz
	SRR11545701_2.fastq.gz	Fastqsanger.gz
	SRR11545702_1.fastq.gz	Fastqsanger.gz

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Project description:BackgroundSkeletal muscle contributes to roughly 40% of lean body mass, and its loss contributes to morbidity and mortality in a variety of pathogenic conditions. Significant insights into muscle function have been made using cultured cells, in particular, the C2C12 myoblast line. However, differentiation of these cells in vitro typically yields immature myotubes relative to skeletal muscles in vivo. While many efforts have attempted to improve the maturity of cultured myotubes, including the use of bioengineered substrates, lack of molecular characterization has precluded their widespread implementation. This study characterizes morphological, molecular, and transcriptional features of C2C12 myotubes cultured on crosslinked, micropatterned gelatin substrates fabricated using previously established methods and compares them to myotubes grown on unpatterned gelatin or traditional plasticware.MethodsWe used immunocytochemistry, SDS-PAGE, and RNAseq to characterize C2C12 myotubes grown on micropatterned gelatin hydrogels, unpatterned gelatin hydrogels, and typical cell culture substrates (i.e., plastic or collagen-coated glass) across a differentiation time course. The ability to form aligned sarcomeres and myofilament protein concentration was assessed. Additionally, the transcriptome was analyzed across the differentiation time course.ResultsC2C12 myotubes grown on micropatterned gelatin hydrogels display an increased ability to form aligned sarcomeres as well as increased contractile protein content relative to myotubes cultured on unpatterned gelatin and plastic. Additionally, genes related to sarcomere formation and in vivo muscle maturation are upregulated in myotubes grown on micropatterned gelatin hydrogels relative to control myotubes.ConclusionsOur results suggest that growing C2C12 myotubes on micropatterned gelatin hydrogels accelerates sarcomere formation and yields a more fully matured myotube culture. Thus, the use of micropatterned hydrogels is a viable and simple approach to better model skeletal muscle biology in vitro.

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Culturing C2C12 myotubes on micromolded gelatin hydrogels accelerates myotube maturation

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