Abstract:Topoisomerase 1 is the main enzyme playing an important role in relaxing. The supercoiled DNA strands allow the replication fork to transcribe the DNA to RNA and finally control protein production in active and replicating cells. Blocking this essential machinery is a cornerstone mechanism in treating tumors, such as liver, breast, and metastatic colorectal carcinoma. Irinotecan is a topoisomerase inhibitor that blocks the replication ending in DNA break and tumor cell death. This chemotherapy has been success… Show more
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