🧬 DNA Damage & Repair at Replication Forks under Topo I Inhibition 💊⚡

 Stepwise DNA damage and repair mechanisms at replication forks in response to topoisomerase I inhibition 🧬🛠️ focuses on how cells manage stress during DNA replication. When topoisomerase I is inhibited 💊, replication forks slow or stall, leading to torsional stress and DNA breaks ⚡. This process helps researchers understand how cancer therapies affect dividing cells and how cells activate

 survival pathways under damage conditions 🧯.



At stalled replication forks, cells trigger checkpoint signaling 🚦 to pause the cell cycle and prevent further damage. Repair proteins assemble at the damage sites 🧲, coordinating pathways such as homologous recombination 🔁 and fork reversal to stabilize DNA strands. These mechanisms act like a cellular repair crew 🧑‍🔧 ensuring that broken or tangled DNA is carefully restored before replication continues.

Studying these stepwise repair events provides key insights for cancer biology 🧫 and drug development. Understanding how cells respond to topoisomerase I inhibitors helps improve treatment precision 🎯, reduce harmful side effects, and identify resistance mechanisms 🧩. Overall, this research highlights the delicate balance between DNA damage and repair that protects genome stability 🧱✨.

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