CRISPR-Cas9 technology is a relatively recently developed tool for easy and efficient targeting of DNA. However, its efficiency for the repair of a mutated sequence is low. Moreover, most CRISPR-based gene correction approaches require the use of an exogenous template. Here, we investigated whether we could use the CRISPR-Cas9 system and the autologous repair machinery to correct human recessive genetic disorders having two different mutations in two alleles (compound heterozygotes). We reasoned that by targeting an intronic sequence located between the two mutations, we could generate at least one normal allele via the repair of induced double-strand breaks through either gene conversion or mitotic crossover. In particular, using a simple hypoxanthine-guanine phosphoribosyltransferase ()-based system, we show we can form a normal and functional gene. Thus, we give proof of principle that homology-directed recombination can be exploited in compound heterozygote cells to correct a genetic defect without exogenous templates.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1089/crispr.2018.0004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Functions of the Bloom Syndrome Helicase N-terminal Intrinsically Disordered Region.
Genetics
January 2025
Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Bloom Syndrome helicase (Blm) is a RecQ family helicase involved in DNA repair, cell-cycle progression, and development. Pathogenic variants in human BLM cause the autosomal recessive disorder Bloom Syndrome, characterized by predisposition to numerous types of cancer. Prior studies of Drosophila Blm mutants lacking helicase activity or protein have shown sensitivity to DNA damaging agents, defects in repairing DNA double-strand breaks (DSBs), female sterility, and improper segregation of chromosomes in meiosis.
View Article and Find Full Text PDFComputational Analysis of Missense Mutations: Insight into Protein Structure and Interaction Dynamics.
ACS Chem Neurosci
January 2025
Laboratory for Innovative Drugs (Lab4IND), Computational Drug Design Center (HITMER), Bahçeşehir University, 34734 İstanbul, Türkiye.
is implicated in a range of conditions, including autism spectrum disorder, intellectual disability, seizures, autosomal recessive nonsyndromic intellectual disability, heterotaxy, and ciliary dysfunction. In order to understand the molecular mechanisms underlying these conditions, we focused on the structural and dynamic activity consequences of mutations within this gene. In this study, whole exome sequencing identified the c.
View Article and Find Full Text PDFSiblings With Berardinelli-Seip Congenital Lipodystrophy: Clinical Insights and Challenges.
Cureus
December 2024
Pharmacy, Punjab University College of Pharmacy, Lahore, PAK.
Berardinelli-Seip congenital lipodystrophy (BSCL), also known as congenital generalized lipodystrophy (CGL), is an exceptionally rare autosomal recessive disorder marked by a significant deficiency of adipose tissue throughout the body. This lack of adipose tissue, normally found beneath the skin and between internal organs, leads to impaired adipocyte formation and fat storage, causing lipids to accumulate in atypical tissues such as muscles and the liver. The extent of adipose tissue loss directly influences the severity of symptoms, which can include a muscular appearance, increased appetite, bone cysts, marrow fat depletion, acromegalic features, severe insulin resistance, skeletal muscle hypertrophy, hypertrophic cardiomyopathy, hepatic steatosis, hepatomegaly, cirrhosis, and intellectual disability.
View Article and Find Full Text PDFFunctional genotype classification groups distinguish disease severity in recessive dystrophic epidermolysis bullosa.
Br J Dermatol
January 2025
Department of Dermatology, Stanford University School of Medicine, Stanford, CA, USA.
Recessive dystrophic epidermolysis bullosa (RDEB) is a genetic disorder due to pathogenic variants in the COL7A1 gene. In this study we determined the association between different categories of COL7A1 variants and clinical disease severity in 236 RDEB patients in North America. Published reports or in-silico predictions were used to assess the impact of pathogenic variants in COL7A1 on type VII collagen (C7) protein function.
View Article and Find Full Text PDFClinical manifestations and molecular genetics of seven patients with Niemann-Pick type-C: a case series with a novel variant.
J Pediatr Endocrinol Metab
January 2025
Department of Pediatric Metabolism and Ankara University Rare Diseases Application and Research Center, Ankara University Faculty of Medicine, Ankara, Türkiye.
Objectives: Niemann-Pick type C (NPC) is a rare, autosomal recessive, neurodegenerative disorder caused by biallelic pathogenic variants in the or genes, leading to lysosomal lipid accumulation. NPC has an incidence of 1 in 100,000 live births and presents with a wide range of symptoms affecting visceral organs and the central nervous system. We aim to describe the diverse clinical presentations of NPC through case studies.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!