Title : Case Report: 7-Ethyl-10-Hydroxycamptothecin, a DNA Topoisomerase I Inhibitor, Performs BRD4 Inhibitory Activity and Inhibits Human Leukemic Cell Growth.

Pub. Date : 2021

PMID : 33995089






8 Functional Relationships(s)
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1 Case Report: 7-Ethyl-10-Hydroxycamptothecin, a DNA Topoisomerase I Inhibitor, Performs BRD4 Inhibitory Activity and Inhibits Human Leukemic Cell Growth. Irinotecan bromodomain containing 4 Homo sapiens
2 In our study, SN-38 was characterized as a potent and reversible BRD4 inhibitor [IC50 = 660.2 nM against BRD4 (BD1) and IC50 = 547.7 nM against BRD4 (BD2)] in biochemical assay using drug repurposing strategy. Irinotecan bromodomain containing 4 Homo sapiens
3 In our study, SN-38 was characterized as a potent and reversible BRD4 inhibitor [IC50 = 660.2 nM against BRD4 (BD1) and IC50 = 547.7 nM against BRD4 (BD2)] in biochemical assay using drug repurposing strategy. Irinotecan bromodomain containing 4 Homo sapiens
4 In our study, SN-38 was characterized as a potent and reversible BRD4 inhibitor [IC50 = 660.2 nM against BRD4 (BD1) and IC50 = 547.7 nM against BRD4 (BD2)] in biochemical assay using drug repurposing strategy. Irinotecan bromodomain containing 4 Homo sapiens
5 Additional cellular assay suggested that SN-38 can bind BRD4 in human leukemic cell K562 and inhibit cell growth with IC50 = 0.2798 muM in a BRD4 dependent manner partially. Irinotecan bromodomain containing 4 Homo sapiens
6 Additional cellular assay suggested that SN-38 can bind BRD4 in human leukemic cell K562 and inhibit cell growth with IC50 = 0.2798 muM in a BRD4 dependent manner partially. Irinotecan bromodomain containing 4 Homo sapiens
7 Additionally, mechanism study indicated that SN-38 can induce the accumulation of BRD4 substrate c-Myc and cleavage of caspase 3. Irinotecan bromodomain containing 4 Homo sapiens
8 In sum, our findings identified BRD4 as a new target of SN-38 and reveals SN-38 as a modifier of histone acetylation reader for the first time, which may provide a new insight for further optimization of dual target inhibitor. Irinotecan bromodomain containing 4 Homo sapiens