Single cell transcriptomics of TBX5 allelic series during human cardiac differentiation
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ABSTRACT:
PROVIDER: PRJNA573698 | ENA |
REPOSITORIES: ENA
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2017-03-23 | PXD005526 | Pride
Project description:Background: Cardiac transcription factors are master regulators during heart development. Recently, some were shown to transdifferentiate noncardiac mesoderm cells and cardiac fibroblasts into cardiomyocytes. However, the individual roles of each transcription factors in activating cardiac gene program have not been elucidated. We examined cardiac-specific and genome-wide gene expression in fibroblasts induced with cardiac transcription factors Nkx2.5 (N), Tbx5 (T), Gata4 (G), Myocardin (M) alone or different combinations. Methodology/Principal Findings: We applied different combinations of human Nkx2.5 (N), Tbx5 (T), Gata4 (G) and Myocardin (M) lentiviruses into 10T1/2 fibroblasts. Immunostaining and quantitative reverse transcription polymerase chain reaction (qRT-PCR) showed that N, T, G or M alone did not induce expression of cardiac marker genes M-NM-1-myosin heavy chain (M-NM-1MHC) and cardiac troponin T (cTnT). Only T+M and T+G+M combinations induced M-NM-1MHC and cTnT expression. Microarray-based gene ontology analysis revealed that T alone inhibited most genes involved in cardiac-related processes and activated genes involved in Wnt receptor signaling pathway and in aberrant processes. M alone inhibited genes involved in Wnt receptor signaling pathway and activated genes involved in cardiac-related processes and in aberrant processes. G alone inhibited genes involved in ectoderm development. T+G+M combination was the most effective activator of genes associated with cardiac-related processes including muscle cell differentiation, sarcomere, striated muscle contraction, regulation of heart contraction, and glucose metabolism and fatty acid oxidation (two significant forms of cardiomyocyte energy metabolism). And unlike T, M, G alone or T+M, T+G+M did not activate genes associated with aberrant processes. Conclusions: Tbx5, Gata4 and Myocardin play different roles in activating cardiac gene program and in avoiding aberrant gene program activation. The combination of T+G+M activated cardiac gene program and avoided aberrant gene program activation. Two weeks after doxycline induction, total RNA was isolated from 10T1/2-tTA cells infected with different combinations of Tbx5, Gata4, and Myocardin lentiviruses. Biological triplicated.
2012-11-30 | E-GEOD-27329 | biostudies-arrayexpress
Project description:T-box transcription factors play critical roles in the development and identity of the heart. Tbx5 has been implicated as a regulator of the fast-conducting, ventricular conduction system, while Tbx3 has been implicated as a regulator of the slow-conducting node. We hypothesize TBX5 and TBX3 share common binding sites in cardiomyocytes to positively or negatively regulate transcription, respectively, for cardiac cell identity and conduction. To this end, we performed ChIP-sequencing to identify localization of TBX5 during fetal heart development and have compared it with previously published histone (GEO Series: GSE31039; ENCODE Accessions: ENCSR080GQM, ENCSR000CDL, ENCSR000CDM, ENCSR052CDF, ENCSR345RKE, ENCSR007XTC, ENCSR360ANE, ENCSR000CDK, and ENCSR357OED) and TBX3 ChIP-seq (GSM862695).
2020-04-21 | GSE139803 | GEO