WGS of KCNQ2 R201C patient derived iPSC and its isogenic line
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ABSTRACT:
PROVIDER: EGAS00001007231 | EGA |
REPOSITORIES: EGA
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Project description:WS iPSC (iWS780) is a WRN-null iPSC line derived from AG00780 fibroblast. This iPSC line showed normal 46,XY karyotype. iWS780 was gene-edited by CRIPSR/Cas9 to correct the WRN point mutation. Two clones (C21 & C24) were characterized and showed expression of wild-type WRN protein after gene editing. The iPSC lines (isogenic) were subsequently differentiated into mesenchymal stem cells (MSC). RNA-seq was performed on these MSC.
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Project description:Purpose: A proof of concept study examining the disease modelling capabilities of patient iPSC derived kidney organoids. Methods: A proband was diagnosed by genome sequencing with compound heterozygous IFT140 mutations. A one-step reprogramming/gene-editing protocol of proband fibroblasts was used to derive both uncorrected patient and isogenic gene-corrected induced pluripotent stem cells (iPSC) which were differentiated to kidney organoids. Organoids were examined by immunofluorescence. Additionally, epithelial cells magnetically sorted from whole kidney organoids underwent transcriptional profiling and spheroid culture. Results: Differential expression analysis of organoid epithelial cell fractions demonstrated apicobasal polarity, cell-cell junction and dynein motor assembly downregulation in patient organoids. Defective ciliary morphology and spheroid culture were rescued in gene corrected organoids. Conclusions: This study validates patient iPSC-derived kidney organoids as a novel, faithful and patient-specific model to further the study of inherited renal disease in regenerated, human, in vitro tissue.
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Project description:Prime editing is a novel genome editing technology using fusion proteins of Cas9-nickase and reverse transcriptase, that holds promise to correct a wide variety of genetic defects.
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Project description:Cornelia de Lange syndrome (CdLS) is a rare genetic disease associated with cohesinopathy. A novel iPSC line was generated from the CdLS patient carrying a heterozygous missense point-mutation of the NIPBL gene. iPSC lines prepared from the healthy parents and the mutation-corrected isogenic cell lines are used as the respective controls. Upon differentiation into hepatocytes, the patient-derived iPSC demonstrate the capacity to express hepatocyte-specific marker transcripts and the respective proteins, however, the efficiency of differentiation is significantly inferior to those of the respective controls, demonstrated by single-cell RNA sequencing and immune-fluorescent analyses. Global change of transcriptome in the patient-derived iPSC relative to the control cells is associated with altered chromatin accessibility, assessed by RNAseq combined with ATACseq analysis. Differentially down-regulated genes in the patient-derived iPSC, in particular, are those coding for proteins related to neural differentiation and transcription factors, while up-regulated genes contain some of antisense RNA coding genes, pseudo genes and long non-coding RNAs. Some of the differentially regulated genes are consistent with the altered chromatin accessibility and this observation is consistent during hepatocyte differentiation. Thus, the mutation in the NIPBL gene of the CdLS patient could be responsible for defects of differentiation primarily due to alteration of chromatin accessibility.
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2023-01-15 | PXD039452 | iProX
Project description:Cornelia de Lange syndrome (CdLS) is a rare genetic disease associated with cohesinopathy. A novel iPSC line was generated from the CdLS patient carrying a heterozygous missense point-mutation of the NIPBL gene. iPSC lines prepared from the healthy parents and the mutation-corrected isogenic cell lines are used as the respective controls. Upon differentiation into hepatocytes, the patient-derived iPSC demonstrate the capacity to express hepatocyte-specific marker transcripts and the respective proteins, however, the efficiency of differentiation is significantly inferior to those of the respective controls, demonstrated by single-cell RNA sequencing and immune-fluorescent analyses. Global change of transcriptome in the patient-derived iPSC relative to the control cells is associated with altered chromatin accessibility, assessed by RNAseq combined with ATACseq analysis. Differentially down-regulated genes in the patient-derived iPSC, in particular, are those coding for proteins related to neural differentiation and transcription factors, while up-regulated genes contain some of antisense RNA coding genes, pseudo genes and long non-coding RNAs. Some of the differentially regulated genes are consistent with the altered chromatin accessibility and this observation is consistent during hepatocyte differentiation. Thus, the mutation in the NIPBL gene of the CdLS patient could be responsible for defects of differentiation primarily due to alteration of chromatin accessibility.
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Project description:Cornelia de Lange syndrome (CdLS) is a rare genetic disease associated with cohesinopathy. A novel iPSC line was generated from the CdLS patient carrying a heterozygous missense point-mutation of the NIPBL gene. iPSC lines prepared from the healthy parents and the mutation-corrected isogenic cell lines are used as the respective controls. Upon differentiation into hepatocytes, the patient-derived iPSC demonstrate the capacity to express hepatocyte-specific marker transcripts and the respective proteins, however, the efficiency of differentiation is significantly inferior to those of the respective controls, demonstrated by single-cell RNA sequencing and immune-fluorescent analyses. Global change of transcriptome in the patient-derived iPSC relative to the control cells is associated with altered chromatin accessibility, assessed by RNAseq combined with ATACseq analysis. Differentially down-regulated genes in the patient-derived iPSC, in particular, are those coding for proteins related to neural differentiation and transcription factors, while up-regulated genes contain some of antisense RNA coding genes, pseudo genes and long non-coding RNAs. Some of the differentially regulated genes are consistent with the altered chromatin accessibility and this observation is consistent during hepatocyte differentiation. Thus, the mutation in the NIPBL gene of the CdLS patient could be responsible for defects of differentiation primarily due to alteration of chromatin accessibility.
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