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Niveditha L, Fu P, Leao TF, Li T, Wang T, Poulin RX, Gaspar LR, Naman CB, Thavarool Puthiyedathu S. Targeted Isolation of Two New Anti-inflammatory and UV-A Protective Dipyrroloquinones from the Sponge-associated Fungus Aspergillus tamarii MCCF102. PLANTA MEDICA 2022; 88:774-782. [PMID: 35148546 DOI: 10.1055/a-1769-8480] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In following up on observed in vitro anti-inflammatory activity of the organic extract of the marine sponge-derived fungus Aspergillus tamarii MCCF102, two new dipyrrolobenzoquinones, terreusinone B and C (1: and 2: ), were discovered along with the known analogue, terreusinone (3: ). The structures of 1: -3: were determined by spectroscopic and spectrometric analyses, along with chemical inter-conversion. In vitro testing on lipopolysaccharide (LPS) stimulated RAW 264.7 murine macrophage cells revealed that 1: -3: exhibit anti-inflammatory activity by inhibiting nitric oxide production in a dose-dependent manner (IC50 < 1 µM) without any cytotoxicity observed at the same concentrations. Due to this and the UV-A absorptive properties imparted by the highly conjugated structures of these molecules, the potential for using 1: -3: or related analogues as natural sunscreen components is suggested. Gene sequencing and informatics biosynthetic gene cluster comparisons were insufficient to confidently elucidate the biosynthetic origins of these compounds, possibly suggesting the occurrence of a gene cluster not detected in the initial sequencing or a non-canonical pathway that should be further investigated.
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Affiliation(s)
- Lekshmi Niveditha
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
| | - Peng Fu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Tiago F Leao
- Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil
| | - Te Li
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, Department of Marine Pharmacy, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Tingting Wang
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, Department of Marine Pharmacy, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Remington X Poulin
- Department of Chemistry and Biochemistry, Center for Marine Science, College of Arts and Sciences, University of North Carolina Wilmington, Wilmington, NC, USA
| | - Lorena R Gaspar
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - C Benjamin Naman
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, Department of Marine Pharmacy, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
- Department of Chemistry and Biochemistry, Center for Marine Science, College of Arts and Sciences, University of North Carolina Wilmington, Wilmington, NC, USA
| | - Sajeevan Thavarool Puthiyedathu
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
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Levy T, Marchand L, Stroobant V, Pilotte L, Van den Eynde B, Rodriguez F, Delfourne E. IDO1 and TDO inhibitory evaluation of analogues of the marine pyrroloiminoquinone alkaloids: Wakayin and Tsitsikammamines. Bioorg Med Chem Lett 2021; 40:127910. [PMID: 33711443 DOI: 10.1016/j.bmcl.2021.127910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/07/2021] [Accepted: 02/15/2021] [Indexed: 10/21/2022]
Abstract
Indoleamine 2,3-dioxygenase (IDO1) and tryptophane 2,3-dioxygenase (TDO) are two heme-containing enzymes which catalyze the conversion of tryptophan to N-formylkynurenine. Both enzymes are well establish therapeutic targets as important factors in the tumor immune evasion mechanism. A number of analogues of the marine pyrroloquinoline alkaloids tsitsikammamines or wakayin have been synthesized, two of them were synthesized using an original method to build the bispyrroloquinone framework. All the derivatives were evaluated in a cellular assay for their capacity to inhibit the enzymes. Six compounds have shown a significant potency on HEK 293-EBNA cell lines expressing hIDO1 or hTDO.
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Affiliation(s)
- Thomas Levy
- Université Paul Sabatier, UMR CNRS 5068, Laboratoire de Synthèse et Physicochimie de Molécules d'Intérêt Biologique, 118 Route de Narbonne, 31062 Toulouse Cédex 9, France
| | - Laura Marchand
- Université Paul Sabatier, UMR CNRS 5068, Laboratoire de Synthèse et Physicochimie de Molécules d'Intérêt Biologique, 118 Route de Narbonne, 31062 Toulouse Cédex 9, France
| | - Vincent Stroobant
- Ludwig Cancer Research Ltd (Brussels Branch) & de Duve Institute (Tumor Immunology & Antigen Processing Group), Avenue Hippocrate 74 (UCL B1.7403) B-1200, Bruxelles, Belgium
| | - Luc Pilotte
- Ludwig Cancer Research Ltd (Brussels Branch) & de Duve Institute (Tumor Immunology & Antigen Processing Group), Avenue Hippocrate 74 (UCL B1.7403) B-1200, Bruxelles, Belgium
| | - Benoît Van den Eynde
- Ludwig Cancer Research Ltd (Brussels Branch) & de Duve Institute (Tumor Immunology & Antigen Processing Group), Avenue Hippocrate 74 (UCL B1.7403) B-1200, Bruxelles, Belgium
| | - Frédéric Rodriguez
- Université Paul Sabatier, UMR CNRS 5068, Laboratoire de Synthèse et Physicochimie de Molécules d'Intérêt Biologique, 118 Route de Narbonne, 31062 Toulouse Cédex 9, France
| | - Evelyne Delfourne
- Université Paul Sabatier, UMR CNRS 5068, Laboratoire de Synthèse et Physicochimie de Molécules d'Intérêt Biologique, 118 Route de Narbonne, 31062 Toulouse Cédex 9, France.
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Vanicat A, André-Barrès C, Delfourne E. New reaction of formation of the fused tricyclic bispyrroloquinone ring system. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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