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This study investigates the role of the RXRalpha gene in ventricular cardiomyocyte development and cardiac morphology.

May 15, 1998Development

Ventricular muscle-restricted targeting of the RXRα gene reveals a non-cell-autonomous requirement in cardiac chamber morphogenesis

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This study investigates the role of the RXRalpha gene in ventricular cardiomyocyte development and cardiac morphology.
Generated mice with a ventricular-restricted deficiency in RXRalpha using a floxed allele and MLC2v-cre allele.
Conducted experiments to assess the cardiac morphology and viability of these mice at midgestation.
Compared phenotypes of RXRalpha-deficient embryos with wild-type embryos to evaluate the effects.
Approximately 80% of ventricular cardiomyocytes lacked RXRalpha function but displayed a normal phenotype without congenital heart disease.
RXRalpha deficiency did not affect adult viability, indicating non-cell-autonomous roles.
The findings suggest that RXRalpha signals from adjacent cells are necessary for proper cardiomyocyte and chamber development.

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Randomized trial uncovers non-cell-autonomous requirements for RXRα in ventricular chamber morphogenesis, suggesting key signaling roles.

Chen et al. (1998) studied this question.

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Randomized trial uncovers non-cell-autonomous requirements for RXRα in ventricular chamber morphogenesis, suggesting key signaling roles.