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Effect of HIRA deletion on gene expression in mouse skeletal muscle at 6 weeks of age

ABSTRACT: We performed gene expression profiling by microarray using RNA extracted from the tibialis anterior of control and Hira myofiber-specific conditional knockout mice at 6 weeks of age. Hira is a histone chaperone responsible for replication-independent incorporation of histone variant H3.3 at actively transcribed loci. Conditional knockout of Hira in myofibers caused hypertrophy, degeneration, and increased the percentage of type I fibers. These results illustrate the physiological consequences of disrupting Hira-mediated chromatin assembly in myofibers.

ORGANISM(S): Mus musculus

PROVIDER: GSE97359 | GEO | 2017/06/26

SECONDARY ACCESSION(S): PRJNA381494

REPOSITORIES: GEO

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Effect of a myofiber-specific HIRA conditional knockout on gene expression in mouse skeletal muscle at 6 months of age

Project description:We performed gene expression profiling by microarray using RNA extracted from the tibialis anterior of control and Hira myofiber-specific conditional knockout mice at 6 months of age. Hira is a histone chaperone responsible for replication-independent incorporation of histone variant H3.3 at actively transcribed loci. Conditional knockout of Hira in myofibers improved strength and endurance, caused hypertrophy and regeneration, and increased the percentage of type I fibers. These results illustrate the physiological consequences of disrupting Hira-mediated chromatin assembly in myofibers.

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