ProjektUSS-USH2A – Rescuing the common deep intronic USH2A variant c.7595-2144A>G by single gRNA and AAV-packageable…
Grunddaten
Akronym:
USS-USH2A
Titel:
Rescuing the common deep intronic USH2A variant c.7595-2144A>G by single gRNA and AAV-packageable enhanced-deletion RNA-guided endonucleases
Laufzeit:
01.04.2023 bis 31.03.2024
Abstract / Kurz- beschreibung:
Usher syndrome is an autosomal recessively inherited rare ciliopathy characterized by sensorineural hearing loss and subsequent retinal degeneration (i.e. Retinitis pigmentosa, RP). Among the three clinical Usher subclasses, mutations in the USH2A gene are responsible for ~50% of all Usher and 85% of Usher type 2 cases, respectively, and are also a common cause of isolated non-syndromic RP. Although many mutations in USH2A are private and therefore ultra-rare, important founder mutations have been identified. The deep-intronic variant (DIV) USH2A:c.7595-2144A>G is common and can account for up to ~ 4% of total USH2A alleles, depending on population. This DIV determines the activation of a cryptic splice site, leading to intron (pseudoexon) retention in the ma-ture mRNA transcript. The pseudoexon insertion in the mRNA results in a premature stop codon, leading to the
degradation of the mutant transcript via the nonsense mediated decay pathway. We want to rescue this missplicing phenotype by CRISPR/Cas9-mediated genome editing. We have bioengineered novel Enhanced-Deletion Cas variants – Cas9 variants fused to exonucleases: EDSpCas9 and EDsRGN, able to function by single gRNAs.
degradation of the mutant transcript via the nonsense mediated decay pathway. We want to rescue this missplicing phenotype by CRISPR/Cas9-mediated genome editing. We have bioengineered novel Enhanced-Deletion Cas variants – Cas9 variants fused to exonucleases: EDSpCas9 and EDsRGN, able to function by single gRNAs.
Schlüsselwörter:
Tief-intronische Varianten, Genom-Editierung, Missplicing, Crispr/Cas
Beteiligte Mitarbeiter/innen
Leiter/innen
Department für Augenheilkunde
Kliniken und klinische Institute, Medizinische Fakultät
Kliniken und klinische Institute, Medizinische Fakultät
Ansprechpartner/innen
Department für Augenheilkunde
Kliniken und klinische Institute, Medizinische Fakultät
Kliniken und klinische Institute, Medizinische Fakultät
Weitere Mitarbeiter/innen
Fachbereich Biologie
Mathematisch-Naturwissenschaftliche Fakultät
Mathematisch-Naturwissenschaftliche Fakultät
Department für Augenheilkunde
Kliniken und klinische Institute, Medizinische Fakultät
Kliniken und klinische Institute, Medizinische Fakultät
Lokale Einrichtungen
Forschungsinstitut für Augenheilkunde
Department für Augenheilkunde
Kliniken und klinische Institute, Medizinische Fakultät
Kliniken und klinische Institute, Medizinische Fakultät
Geldgeber
Needham, Massachusetts, Vereinigte Staaten