Key result
Calreticulin deficiency disrupts embryonic transcriptomes, driving disorganized sarcomeres and ventricular septal defects.
Why the study?
Genomic perturbations at the pluripotent stage may trigger latent cardiophenotypes, and transcriptome landscapes could enable molecular diagnosis before symptom onset.
Bioinformatic analysis of calreticulin-deficient embryonic stem cells can predict latent abnormal cardiophenotypes, such as ventricular septal defects and cytoarchitectural aberrations, prior to differentiation.
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Animal data on calreticulin-deficient cardiomyocytes remain preliminary; leaves open whether bioinformatics can preemptively flag differentiation defects for human stem cell models.
Faustino et al. (2010) studied Calreticulin deficiency. Calreticulin deficiency was evaluated on Transcriptome dynamics and cardiac manifestations. Calreticulin-deficient embryonic stem cells exhibited a disrupted transcriptome that predicted and was validated by disorganized sarcomerogenesis, mitochondrial paucity, and ventricular septal defects.
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