Project description:We performed a genome wide transcription profile analysis to determine the expression alterations between control and the POH1 siRNAs transfected SMMC-7721 cells The liver cancer cell line SMMC-7721 transfected with either the control or POH1 siRNAs were subjected to a genome wide transcription profile analysis through Human U133 Puls 2.0 (Affymetrix) microarray
Project description:Members of the PR/SET domain-containing (PRDM) family of zinc finger transcriptional regulators play diverse roles in embryonic development and lineage differentiation. PRDM10 is a yet uncharacterized family member, with unknown functions in vivo. Here we report an essential requirement for PRDM10 in the pre-implantation embryo and embryonic stem cells (mESCs), where loss of PRDM10 results in severe cell growth inhibition. Genomic and biochemical analyses reveal that PRDM10 functions as a sequence-specific transcription factor which modulates gene expression by binding to target gene promoters. We identify Eif3b, which encodes a core component of the eukaryotic translation initiation factor 3 (eIF3) complex, as a key downstream target and demonstrate that growth inhibition in PRDM10-deficient mESCs is largely mediated through EIF3B-dependent effects on global translation. This work elucidates the molecular function of PRDM10 in maintaining global translation and establishes its essential role in early embryonic development and mESC homeostasis, offering novel insights into the functional repertoire of PRDMs as well as the transcriptional mechanisms regulating global translation.
Project description:Members of the PR/SET domain-containing (PRDM) family of zinc finger transcriptional regulators play diverse roles in embryonic development and lineage differentiation. PRDM10 is a yet uncharacterized family member, with unknown functions in vivo. Here we report an essential requirement for PRDM10 in the pre-implantation embryo and embryonic stem cells (mESCs), where loss of PRDM10 results in severe cell growth inhibition. Genomic and biochemical analyses reveal that PRDM10 functions as a sequence-specific transcription factor which modulates gene expression by binding to target gene promoters. We identify Eif3b, which encodes a core component of the eukaryotic translation initiation factor 3 (eIF3) complex, as a key downstream target and demonstrate that growth inhibition in PRDM10-deficient mESCs is largely mediated through EIF3B-dependent effects on global translation. This work elucidates the molecular function of PRDM10 in maintaining global translation and establishes its essential role in early embryonic development and mESC homeostasis, offering novel insights into the functional repertoire of PRDMs as well as the transcriptional mechanisms regulating global translation.
Project description:Members of the PR/SET domain-containing (PRDM) family of zinc finger transcriptional regulators play diverse roles in embryonic development and lineage differentiation. PRDM10 is a yet uncharacterized family member, with unknown functions in vivo. Here we report an essential requirement for PRDM10 in the pre-implantation embryo and embryonic stem cells (mESCs), where loss of PRDM10 results in severe cell growth inhibition. Genomic and biochemical analyses reveal that PRDM10 functions as a sequence-specific transcription factor which modulates gene expression by binding to target gene promoters. We identify Eif3b, which encodes a core component of the eukaryotic translation initiation factor 3 (eIF3) complex, as a key downstream target and demonstrate that growth inhibition in PRDM10-deficient mESCs is largely mediated through EIF3B-dependent effects on global translation. This work elucidates the molecular function of PRDM10 in maintaining global translation and establishes its essential role in early embryonic development and mESC homeostasis, offering novel insights into the functional repertoire of PRDMs as well as the transcriptional mechanisms regulating global translation.
Project description:Proliferative stage (tachyzoite) is a critical factor in the transmission and pathogenesis of Toxoplasma gondii (T. gondii), which is capable of infecting a large variety of host cells. Proto-oncogene eukaryotic translation initiation factor (eIF-5A) is thought to function in regulation of many cellular processes including cell proliferation. Investigation the specific roles of eIF-5A involved in T. gondii is instrumental for the elucidation of tachyzoite replication. Here, eIF-5A knockdown strain was generated and analyzed by isobaric tags for relative and absolute quantification (iTraq), which suggested that proto-oncogene eIF-5A also acts as an essential gene to ensure proper protein synthesis during T. gondii invasion and replication.