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CRISPR Gene Editing

CRISPR gene editing refers to a family of molecular methods that utilize RNA-guided CRISPR-associated nucleases to induce targeted sequence modifications in DNA.

Type: Concept Domain: Biology Medicine Technology Era: 2012 — present

Overview

A guide RNA directs a Cas endonuclease to a complementary genomic sequence, generating a targeted break in the DNA duplex. Endogenous cellular repair pathways then resolve the lesion, either disabling the targeted site through non-homologous joining or integrating donor templates via homology-directed repair. Adapted from microbial immune systems, this modular RNA-guided mechanism lowered design complexity compared to protein-guided platforms like zinc finger nucleases, although outcome precision depends on cellular context.

Why it matters

The platform broadened genomic research across molecular biology and supported translational pipelines in medicine and agriculture. Clinical applications include ex vivo cell therapies, alongside expanding functional genetic screening and crop trait engineering.

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