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DNA Double-Strand Breaks

 DNA Double-Strand Breaks

DNA Double-Strand Breaks (DSBs) are severe forms of DNA damage in which both strands of the DNA double helix are broken simultaneously, threatening genomic stability and cell survival. DSBs can arise from endogenous sources such as replication errors and reactive oxygen species, or exogenous factors like ionizing radiation and chemotherapeutic agents. Because they disrupt the continuity of both DNA strands, DSBs are highly cytotoxic and can lead to mutations, chromosomal rearrangements, or cell death if not repaired accurately. Cells rely primarily on two major repair pathways—Non-Homologous End Joining (NHEJ) and Homologous Recombination (HR)—to fix DSBs and maintain genomic integrity. Understanding DSBs is essential in fields such as genetics, cancer biology, radiation biology, and genome editing technologies like CRISPR.

DNA Double-Strand Breaks, Genomic instability, DNA repair mechanisms, Homologous recombination, Non-homologous end joining

#DNADoubleStrandBreaks #DNARepair #GenomicStability #HomologousRecombination #NHEJ #GenomeIntegrity #RadiationBiology #CancerGenetics #ChromosomalBreaks #CellDamage #DNAReplicationStress #GenotoxicStress #MolecularGenetics #CRISPRMechanisms #DNAHealing #GeneticsEducation #GenomeMaintenance #CellCycleCheckpoints #Mutagenesis #GenomicsResearch #Biotechnology #MolecularBiology #DNAIntegrity #CellSurvival #BiomedicalScience #DNAPathways #PrecisionMedicine #CancerResearch #Radiotherapy #GenomeEditing #DNAResponse #CellularRepair #DNAStressResponse #GeneRegulation #ReplicationErrors #OxidativeDamage #TherapeuticTargets #GenomeDamage #BiologyFacts #ScienceEducation

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