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Lacerna NM, Ramones CMV, Robes JMD, Picart MRD, Tun JO, Miller BW, Haygood MG, Schmidt EW, Salvador-Reyes LA, Concepcion GP. Inhibition of Biofilm Formation by Modified Oxylipins from the Shipworm Symbiont Teredinibacter turnerae. Mar Drugs 2020; 18:md18120656. [PMID: 33419303 PMCID: PMC7766104 DOI: 10.3390/md18120656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/13/2020] [Accepted: 12/16/2020] [Indexed: 11/16/2022] Open
Abstract
The bioactivity-guided purification of the culture broth of the shipworm endosymbiont Teredinibacter turnerae strain 991H.S.0a.06 yielded a new fatty acid, turneroic acid (1), and two previously described oxylipins (2–3). Turneroic acid (1) is an 18-carbon fatty acid decorated by a hydroxy group and an epoxide ring. Compounds 1–3 inhibited bacterial biofilm formation in Staphylococcus epidermidis, while only 3 showed antimicrobial activity against planktonic S. epidermidis. Comparison of the bioactivity of 1–3 with structurally related compounds indicated the importance of the epoxide moiety for selective and potent biofilm inhibition.
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Affiliation(s)
- Noel M. Lacerna
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
| | - Cydee Marie V. Ramones
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
| | - Jose Miguel D. Robes
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
| | - Myra Ruth D. Picart
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
| | - Jortan O. Tun
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
| | - Bailey W. Miller
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA; (B.W.M.); (M.G.H.); (E.W.S.)
| | - Margo G. Haygood
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA; (B.W.M.); (M.G.H.); (E.W.S.)
| | - Eric W. Schmidt
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA; (B.W.M.); (M.G.H.); (E.W.S.)
| | - Lilibeth A. Salvador-Reyes
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
| | - Gisela P. Concepcion
- The Marine Science Institute, University of the Philippines Diliman, Quezon City 1101, Philippines; (N.M.I.II); (C.M.V.R.); (J.M.D.R.); (M.R.D.P.); (J.O.T.); (L.A.S.-R.)
- Correspondence: ; Tel.: +632-8275-2877
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Lacerna NM, Miller BW, Lim AL, Tun JO, Robes JMD, Cleofas MJB, Lin Z, Salvador-Reyes LA, Haygood MG, Schmidt EW, Concepcion GP. Mindapyrroles A-C, Pyoluteorin Analogues from a Shipworm-Associated Bacterium. J Nat Prod 2019; 82:1024-1028. [PMID: 30793902 PMCID: PMC8188622 DOI: 10.1021/acs.jnatprod.8b00979] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Three new pyoluteorin analogues, mindapyrroles A-C (1-3), were purified from Pseudomonas aeruginosa strain 1682U.R.0a.27, a gill-associated bacterium isolated from the tissue homogenate of the giant shipworm Kuphus polythalamius. Mindapyrroles B and C inhibit the growth of multiple pathogenic bacteria, with mindapyrrole B (2) showing the most potent antimicrobial activity and widest selectivity index over mammalian cells. Preliminary structure-activity relationship analysis showed that dimerization of the pyoluteorin moiety through a C-C linkage is detrimental to the antimicrobial activity, but addition of an aerugine unit in the methylene bridge is favorable for both the antimicrobial activity and selectivity index.
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Affiliation(s)
- Noel M. Lacerna
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Bailey W. Miller
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Albebson L. Lim
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Jortan O. Tun
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Jose Miguel D. Robes
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Mark Jeremiah B. Cleofas
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Zhenjian Lin
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | | | - Margo G. Haygood
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Eric W. Schmidt
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Gisela P. Concepcion
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Corresponding Author Tel: (+632) 275-2877.
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Torres JP, Tianero MD, Robes JMD, Kwan JC, Biggs JS, Concepcion GP, Olivera BM, Haygood MG, Schmidt EW. Stenotrophomonas-Like Bacteria Are Widespread Symbionts in Cone Snail Venom Ducts. Appl Environ Microbiol 2017; 83:e01418-17. [PMID: 28986377 PMCID: PMC5691409 DOI: 10.1128/aem.01418-17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/18/2017] [Indexed: 12/14/2022] Open
Abstract
Cone snails are biomedically important sources of peptide drugs, but it is not known whether snail-associated bacteria affect venom chemistry. To begin to answer this question, we performed 16S rRNA gene amplicon sequencing of eight cone snail species, comparing their microbiomes with each other and with those from a variety of other marine invertebrates. We show that the cone snail microbiome is distinct from those in other marine invertebrates and conserved in specimens from around the world, including the Philippines, Guam, California, and Florida. We found that all venom ducts examined contain diverse 16S rRNA gene sequences bearing closest similarity to Stenotrophomonas bacteria. These sequences represent specific symbionts that live in the lumen of the venom duct, where bioactive venom peptides are synthesized.IMPORTANCE In animals, symbiotic bacteria contribute critically to metabolism. Cone snails are renowned for the production of venoms that are used as medicines and as probes for biological study. In principle, symbiotic bacterial metabolism could either degrade or synthesize active venom components, and previous publications show that bacteria do indeed contribute small molecules to some venoms. Therefore, understanding symbiosis in cone snails will contribute to further drug discovery efforts. Here, we describe an unexpected, specific symbiosis between bacteria and cone snails from around the world.
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Affiliation(s)
- Joshua P Torres
- Department of Medicinal Chemistry, L.S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, Utah, USA
| | - Maria Diarey Tianero
- Department of Medicinal Chemistry, L.S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, Utah, USA
| | - Jose Miguel D Robes
- Marine Science Institute, University of the Philippines-Diliman, Diliman, Quezon City, Philippines
| | - Jason C Kwan
- Department of Medicinal Chemistry, L.S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, Utah, USA
| | - Jason S Biggs
- University of Guam Marine Laboratory, UOG Station, Mangilao, Guam, USA
| | - Gisela P Concepcion
- Marine Science Institute, University of the Philippines-Diliman, Diliman, Quezon City, Philippines
| | | | - Margo G Haygood
- Department of Medicinal Chemistry, L.S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, Utah, USA
| | - Eric W Schmidt
- Department of Medicinal Chemistry, L.S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, Utah, USA
- Department of Biology, University of Utah, Salt Lake City, Utah, USA
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