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Cited by 455

The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.

Flavopiridol Inhibits P-TEFb and Blocks HIV-1 Replication

Open access
Chao, Sheng-Hao, Fujinaga, Koh, Marion, Jon E., Taube, Ran, Sausville, Edward A., Senderowicz, Adrian M., Peterlin, B. Matija, Price, David H.·2000·Journal of Biological Chemistry

Abstract

Flavopiridol (L86-8275, HMR1275) is a cyclin-dependent kinase (Cdk) inhibitor that is in clinical trials as a cancer treatment because of its antiproliferative properties. We found that the flavonoid potently inhibited transcription by RNA polymerase II in vitro by blocking the transition into productive elongation, a step controlled by P-TEFb. The ability of P-TEFb to phosphorylate the carboxyl-terminal domain of the large subunit of RNA polymerase II was inhibited by flavopiridol with a K(i) of 3 nm. Interestingly, the drug was not competitive with ATP. P-TEFb composed of Cdk9 and cyclin T1 is a required cellular cofactor for the human immunodeficiency virus (HIV-1) transactivator, Tat. Consistent with its ability to inhibit P-TEFb, flavopiridol blocked Tat transactivation of the viral promoter in vitro. Furthermore, flavopiridol blocked HIV-1 replication in both single-round and viral spread assays with an IC(50) of less than 10 nm.

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Metadata

Authors
Chao, S.-H., Fujinaga, K., Marion, J. E., Taube, R., Sausville, E. A., Senderowicz, A. M., Peterlin, B. M., & Price, D. H.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2000-09
Volume
275
Issue
37
Pages
28345-28348
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2147347134
Cited by
455
References
31
FWCI
9.00
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Flavopiridol Inhibits P-TEFb and Blocks HIV-1 Replication. https://app.cochat.ai/papers/10.1074/jbc.c000446200
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Chao, S.-H., Fujinaga, K., Marion, J. E., Taube, R., Sausville, E. A., Senderowicz, A. M., Peterlin, B. M., & Price, D. H. (2000). Flavopiridol Inhibits P-TEFb and Blocks HIV-1 Replication. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.c000446200

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