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Neuroprotective protein ADNP-dependent histone remodeling complex promotes T helper 2 immune cell differentiation

ABSTRACT: Neuroprotective protein ADNP-dependent histone remodeling complex promotes T helper 2 immune cell differentiation

PROVIDER: PRJNA901922 | ENA |

REPOSITORIES: ENA

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Neuroprotective protein ADNP-dependent histone remodeling complex promotes Th2 immune cell differentiation (scRNA-Seq)

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Project description:Type-2 immune responses are critical in tissue homeostasis, anti-helminth immunity and allergy. Th2 cells produce interleukin (IL)-4, IL-5 and IL-13 from the type-2 gene cluster under regulation by transcription factors (TFs) including GATA3. To better understand this system we performed CRISPR-Cas9 screens targeting 1131 TFs during Th2 cell differentiation. We discovered that ADNP is indispensable for immune reactions to allergen. Mechanistically, ADNP performs a previously unappreciated role in gene activation forming a critical bridge in the transition from pioneer TFs to chromatin remodelling by recruiting CHD4 and BRG1. Although GATA3 and AP-1 bound the type-2 cytokine locus in the absence of ADNP, they were unable to initiate histone acetylation or DNA accessibility, resulting in highly impaired type-2 cytokine expression. Similar ADNP-dependent regulation was observed for the Maf and Il4ra genes which are known regulators of Th2 differentiation. Our results demonstrate an important role for ADNP in promoting immune cell specialization.

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Transcription profiling of mouse ADNP knockout vs wild type

Project description:The putative transcription factor, activity-dependent neuroprotective protein (ADNP) is a zinc finger and homeodomain - like profile containing protein. ADNP knockout mice die at day 9 of gestation. To reveal ADNP-associated pathways, a 22,690- Affymetrix probe array was used on ADNP knockout and control embryos. References:; Complete sequence of a novel protein containing a femtomolar-activity-dependent neuroprotective peptide. J Neurochem. 1999 Mar;72(3):1283-93. PMID: 10037502 [PubMed - indexed for MEDLINE]; Cloning and characterization of the human activity-dependent neuroprotective protein. J Biol Chem. 2001 Jan 5;276(1):708-14. PMID: 11013255 [PubMed - indexed for MEDLINE]; Activity-dependent neuroprotective protein: a novel gene essential for brain formation. Brain Res Dev Brain Res. 2003 Aug 12;144(1):83-90. PMID: 12888219 [PubMed - indexed for MEDLINE] Experiment Overall Design: To identify downstream target genes of ADNP, we examined global gene expression profiles of whole E9 knockout embryos (KO - ADNP -l-), their wild-type (WT - ADNP +l+ ) and their heterozygous (H - ADNP âl+ ) littermates, using the Affymetrix Murine Genome 430A oligonucleotide microarrays. Gestation day 9 was chosen as it is the period at which embryos lacking ADNP exhibit distinct morphological and developmental changes prior to degeneration and in uterus absorption. Total RNA was extracted from four ADNP knockout embryos, four normal embryos and six heterozygous embryos. A pool of two genotype identical littermates was used on seven different arrays (pooling of two embryos was necessary to obtain enough RNA on each of the gene microarrays).

2008-06-12 | E-GEOD-4068 | biostudies-arrayexpress

Changes in gene expression following ADNP knockout

2007-01-09 | GSE4068 | GEO