Structural Insights into CRISPR-Cas9 Off-Target Effects in Human Genomes: A Case Study on the Applications of Targeted Mutagenesis

Abstract

The CRISPR-Cas9 system has revolutionized molecular biology by enabling precise genetic modifications; however, off-target effects remain a significant concern that complicates therapeutic applications. This study investigates the structural dynamics of CRISPR-Cas9 complexes when interacting with non-targeted genomic sequences. By employing NMR spectroscopy and molecular dynamics simulations using GROMACS 2021, we quantitatively assessed binding affinities and conformational changes. Our findings reveal that off-target interactions can be minimized through specific sequence modifications, leading to an average reduction in binding affinity by 35% (p < 0.01). This study offers novel insights into optimizing CRISPR systems for safer applications in gene therapy, addressing critical gaps in current methodologies that often overlook structural context. The implications for future therapeutic designs are substantial, suggesting refined strategies that may enhance the specificity of gene editing processes.