PMID- 23944963 OWN - NLM STAT- MEDLINE DCOM- 20131126 LR - 20211021 IS - 1520-6025 (Electronic) IS - 0163-3864 (Print) IS - 0163-3864 (Linking) VI - 76 IP - 8 DP - 2013 Aug 23 TI - Structures and potential antitumor activity of sesterterpenes from the marine sponge Hyrtios communis. PG - 1492-7 LID - 10.1021/np400350k [doi] AB - The extract of marine sponge Hyrtios communis was found to inhibit activation of the transcription factor hypoxia-inducible factor-1 (HIF-1) in T47D human breast tumor cells. Bioassay-guided isolation led to the identification of six new (1-6) and five previously reported (7-11) sesterterpene analogues and two unrelated sesterterpenes. Two new sesterterpenes, thorectidaeolide A (1) and 4-acetoxythorectidaeolide A (2), and luffariellolide (11) were among the most potent inhibitors of hypoxia (1% O(2))-induced HIF-1 activation (IC(5)(0) values of 3.2, 3.5, and 3.6 muM, respectively). Luffariellolide (11) exhibited a significant level of cytotoxicity that mirrored its HIF-1 inhibitory activity. Neither compound 1, compound 2, nor any of the other less active sesterterpenes suppressed breast tumor T47D or MDA-MB-231 cell viability. FAU - Li, Jun AU - Li J AD - Department of Pharmacognosy, School of Pharmacy, University of Mississippi, University, Mississippi 38677, USA. FAU - Du, Lin AU - Du L FAU - Kelly, Michelle AU - Kelly M FAU - Zhou, Yu-Dong AU - Zhou YD FAU - Nagle, Dale G AU - Nagle DG LA - eng GR - C06 RR014503/RR/NCRR NIH HHS/United States GR - CA98787/CA/NCI NIH HHS/United States GR - C06 RR-14503-01/RR/NCRR NIH HHS/United States GR - R01 CA098787/CA/NCI NIH HHS/United States GR - R56 CA098787/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20130814 PL - United States TA - J Nat Prod JT - Journal of natural products JID - 7906882 RN - 0 (4-acetoxythorectidaeolide A) RN - 0 (Antineoplastic Agents) RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Sesterterpenes) RN - 0 (Terpenes) RN - 0 (thorectidaeolide A) RN - 111149-87-2 (luffariellolide) SB - IM MH - Animals MH - Antineoplastic Agents/chemistry/*isolation & purification/*pharmacology MH - Cell Survival/drug effects MH - Drug Screening Assays, Antitumor MH - Female MH - Humans MH - Hypoxia-Inducible Factor 1/antagonists & inhibitors MH - Inhibitory Concentration 50 MH - Marine Biology MH - Molecular Structure MH - Oceans and Seas MH - Palau MH - Porifera/*chemistry MH - Sesterterpenes/chemistry/*isolation & purification/*pharmacology MH - Terpenes/*pharmacology PMC - PMC3809078 MID - NIHMS516134 EDAT- 2013/08/16 06:00 MHDA- 2013/12/16 06:00 PMCR- 2014/08/23 CRDT- 2013/08/16 06:00 PHST- 2013/08/16 06:00 [entrez] PHST- 2013/08/16 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] PHST- 2014/08/23 00:00 [pmc-release] AID - 10.1021/np400350k [doi] PST - ppublish SO - J Nat Prod. 2013 Aug 23;76(8):1492-7. doi: 10.1021/np400350k. Epub 2013 Aug 14.