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Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE119597 | GEO | 2019/03/01

REPOSITORIES: GEO

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Precise Gene Editing Preserves Hematopoietic Stem Cell Function following Transient p53-Mediated DNA Damage Response.

Project description:Precise gene editing in hematopoietic stem and progenitor cells (HSPCs) holds promise for treating genetic diseases. However, responses triggered by programmable nucleases in HSPCs are poorly characterized and may negatively impact HSPC engraftment and long-term repopulation capacity. Here, we induced either one or several DNA double-stranded breaks (DSBs) with optimized zinc-finger and CRISPR/Cas9 nucleases and monitored DNA damage response (DDR) foci induction, cell-cycle progression, and transcriptional responses in HSPC subpopulations, with up to single-cell resolution. p53-mediated DDR pathway activation was the predominant response to even single-nuclease-induced DSBs across all HSPC subtypes analyzed. Excess DSB load and/or adeno-associated virus (AAV)-mediated delivery of DNA repair templates induced cumulative p53 pathway activation, constraining proliferation, yield, and engraftment of edited HSPCs. However, functional impairment was reversible when DDR burden was low and could be overcome by transient p53 inhibition. These findings provide molecular and functional evidence for feasible and seamless gene editing in HSPCs.

| S-EPMC6458988 | biostudies-literature

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [Clear-seq]

Project description:We analysed AAVS1 edited cells in presence and absence of GSE56 (p53 inhibitor) 14 days upon electroporation to evaluate whether p53 transient inhibition by GSE56 could aggravate the genotoxicity risk of the procedure

2019-03-01 | GSE126163 | GEO

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [Amplicon-seq]

Project description:We evaluated transcriptional changes elicited by targeting AAVS1 and IL2RG genes and we found that the impact of one or few nuclease-induced DNA DSBs is minor and mainly limited to genes belonging to the p53 pathway. The same pathway was elicited by gene editing at two distinct genomic loci and was more pronounced in primitive vs. progenitor cells.

2019-03-01 | GSE126120 | GEO

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [scRNA-seq]

Project description:We performed single-cell (sc)RNA-Seq on male donors FACS-sorted “primitive” (CD34+ CD133+ CD90+) and “progenitor” (CD34+ CD133+ CD90-) HSPC cells treated with IL2RG ZFN, High Specificity (HS), (Low Specificity (LS) or control RNP in a ratio 1 to 1. We also included HS RNP and the cognate repair template containing a GFP expression cassette delivered by AAV6 and sorted for targeted integration (HS/AAV6 GFP+ vs. HS/AAV6 GFP-)

2019-03-01 | GSE119594 | GEO

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [bulk RNA-seq]

2019-03-01 | GSE119584 | GEO

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response

Project description:Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response

| PRJNA489682 | ENA

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [Clear-seq]

Project description:Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [Clear-seq]

| PRJNA521226 | ENA

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [Amplicon-seq]

Project description:Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [Amplicon-seq]

| PRJNA521165 | ENA

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [scRNA-seq]

Project description:Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [scRNA-seq]

| PRJNA489686 | ENA

Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [bulk RNA-seq]

Project description:Precise Gene Editing Preserves Hematopoietic Stem Cell Function Following Transient p53-Mediate DNA Damage Response [bulk RNA-seq]

| PRJNA489677 | ENA

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