Gene Set: KOHOUTEK_CCNT1_TARGETS

Standard name KOHOUTEK_CCNT1_TARGETS
Systematic name M2401
Brief description Genes down-regulated in E14 ES (embryonic stem) cells upon knockdown of CYCT1 [GeneID=904] by RNAi.
Full description or abstract The positive transcription elongation factor b (P-TEFb) is essential for the elongation of transcription and cotranscriptional processing by RNA polymerase II. In mammals, it contains predominantly the C-type cyclin cyclin T1 (CycT1) or CycT2 and cyclin-dependent kinase 9 (Cdk9). To determine if these cyclins have redundant functions or affect distinct sets of genes, we genetically inactivated the CycT2 gene (Ccnt2) using the beta-galactosidase-neomycin gene (beta-geo) gene trap technology in the mouse. Visualizing beta-galactosidase during mouse embryogenesis revealed that CycT2 is expressed abundantly during embryogenesis and throughout the organism in the adult. This finding was reflected in the expression of CycT2 in all adult tissues and organs. However, despite numerous matings of heterozygous mice, we observed no CycT2(-/-) embryos, pups, or adult mice. This early lethality could have resulted from decreased expression of critical genes, which were revealed by short interfering RNAs against CycT2 in embryonic stem cells. Thus, CycT1 and CycT2 are not redundant, and these different P-TEFb complexes regulate subsets of distinct genes that are important for embryonic development.
Collection C2: curated gene sets
      CGP: chemical and genetic perturbations
Source publication Pubmed 19364821   Authors: Kohoutek J,Li Q,Blazek D,Luo Z,Jiang H,Peterlin BM
Exact source Table 1S: CycT1 siRNA
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(show 34 gene sets from the same authors)
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Organism Mus musculus
Contributed by Arthur Liberzon (MSigDB Team)
Source platform MOUSE_GENE_SYMBOL
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Version history 3.1: First introduced

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