PMID- 12624111 OWN - NLM STAT- MEDLINE DCOM- 20030707 LR - 20210206 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 278 IP - 21 DP - 2003 May 23 TI - Small molecule modulators of histone acetyltransferase p300. PG - 19134-40 AB - Histone acetyltransferases (HATs) are a group of enzymes that play a significant role in the regulation of gene expression. These enzymes covalently modify the N-terminal lysine residues of histones by the addition of acetyl groups from acetyl-CoA. Dysfunction of these enzymes is often associated with the manifestation of several diseases, predominantly cancer. Here we report that anacardic acid from cashew nut shell liquid is a potent inhibitor of p300 and p300/CBP-associated factor histone acetyltranferase activities. Although it does not affect DNA transcription, HAT-dependent transcription from a chromatin template was strongly inhibited by anacardic acid. Furthermore, we describe the design and synthesis of an amide derivative N-(4-chloro-3-trifluoromethyl-phenyl)-2-ethoxy-6-pentadecyl-benzamide (CTPB) using anacardic acid as a synthon, which remarkably activates p300 HAT activity but not that of p300/CBP-associated factor. Although CTPB does not affect DNA transcription, it enhances the p300 HAT-dependent transcriptional activation from in vitro assembled chromatin template. However, it has no effect on histone deacetylase activity. These compounds would be useful as biological switching molecules for probing into the role of p300 in transcriptional studies and may also be useful as new chemical entities for the development of anticancer drugs. FAU - Balasubramanyam, Karanam AU - Balasubramanyam K AD - Transcription and Disease Laboratory, Molecular Biology and Genetics Unit, Jawaharlal Nehru Center for Advanced Scientific Research, Jakkur, Bangalore 560064, India. FAU - Swaminathan, V AU - Swaminathan V FAU - Ranganathan, Anupama AU - Ranganathan A FAU - Kundu, Tapas K AU - Kundu TK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20030306 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Anacardic Acids) RN - 0 (Antineoplastic Agents) RN - 0 (Benzamides) RN - 0 (Cell Cycle Proteins) RN - 0 (Chromatin) RN - 0 (Enzyme Inhibitors) RN - 0 (Histones) RN - 0 (N-(4-chloro-3-trifluoromethylphenyl)-2-ethoxy-6-pentadecylbenzamide) RN - 0 (Plant Extracts) RN - 0 (Recombinant Proteins) RN - 0 (Salicylates) RN - 0 (Transcription Factors) RN - 18654-18-7 (anacardic acid) RN - EC 2.3.1.- (Acetyltransferases) RN - EC 2.3.1.48 (Histone Acetyltransferases) RN - EC 2.3.1.48 (p300-CBP Transcription Factors) RN - EC 2.3.1.48 (p300-CBP-associated factor) SB - IM MH - Acetylation MH - Acetyltransferases/*antagonists & inhibitors/*metabolism/pharmacology MH - Amino Acid Sequence MH - *Anacardic Acids MH - Anacardium/chemistry MH - Antineoplastic Agents MH - Benzamides/chemical synthesis/pharmacology MH - Cell Cycle Proteins/*antagonists & inhibitors/*metabolism/pharmacology MH - Chromatin/genetics MH - Electrophoresis, Polyacrylamide Gel MH - Enzyme Inhibitors/*pharmacology MH - HeLa Cells MH - Histone Acetyltransferases MH - Histones/chemistry/metabolism MH - Humans MH - Models, Molecular MH - Molecular Sequence Data MH - Molecular Structure MH - Plant Extracts/chemistry MH - Recombinant Proteins MH - Salicylates/chemistry/*pharmacology MH - Seeds/chemistry MH - Templates, Genetic MH - Transcription Factors MH - Transcription, Genetic/drug effects MH - p300-CBP Transcription Factors EDAT- 2003/03/08 04:00 MHDA- 2003/07/08 05:00 CRDT- 2003/03/08 04:00 PHST- 2003/03/08 04:00 [pubmed] PHST- 2003/07/08 05:00 [medline] PHST- 2003/03/08 04:00 [entrez] AID - S0021-9258(20)80137-9 [pii] AID - 10.1074/jbc.M301580200 [doi] PST - ppublish SO - J Biol Chem. 2003 May 23;278(21):19134-40. doi: 10.1074/jbc.M301580200. Epub 2003 Mar 6.