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Hwang JY, Chung B, Kwon OS, Park SC, Cho E, Oh DC, Shin J, Oh KB. Inhibitory Effects of Epipolythiodioxopiperazine Fungal Metabolites on Isocitrate Lyase in the Glyoxylate Cycle of Candida albicans. Mar Drugs 2021; 19:md19060295. [PMID: 34067454 PMCID: PMC8224697 DOI: 10.3390/md19060295] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/20/2021] [Accepted: 05/20/2021] [Indexed: 11/16/2022] Open
Abstract
Four epipolythiodioxopiperazine fungal metabolites (1-4) isolated from the sponge-derived Aspergillus quadrilineatus FJJ093 were evaluated for their capacity to inhibit isocitrate lyase (ICL) in the glyoxylate cycle of Candida albicans. The structures of these compounds were elucidated using spectroscopic techniques and comparisons with previously reported data. We found secoemestrin C (1) (an epitetrathiodioxopiperazine derivative) to be a potent ICL inhibitor, with an inhibitory concentration of 4.77 ± 0.08 μM. Phenotypic analyses of ICL-deletion mutants via growth assays with acetate as the sole carbon source demonstrated that secoemestrin C (1) inhibited C. albicans ICL. Semi-quantitative reverse-transcription polymerase chain reaction analyses indicated that secoemestrin C (1) inhibits ICL mRNA expression in C. albicans under C2-assimilating conditions.
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Affiliation(s)
- Ji-Yeon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (J.-Y.H.); (O.-S.K.); (S.C.P.); (D.-C.O.)
| | - Beomkoo Chung
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (B.C.); (E.C.)
| | - Oh-Seok Kwon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (J.-Y.H.); (O.-S.K.); (S.C.P.); (D.-C.O.)
| | - Sung Chul Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (J.-Y.H.); (O.-S.K.); (S.C.P.); (D.-C.O.)
| | - Eunji Cho
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (B.C.); (E.C.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (J.-Y.H.); (O.-S.K.); (S.C.P.); (D.-C.O.)
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (J.-Y.H.); (O.-S.K.); (S.C.P.); (D.-C.O.)
- Correspondence: (J.S.); (K.-B.O.); Tel.: +82-2-880-2484 (J.S.); +82-2-880-4646 (K.-B.O.)
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (B.C.); (E.C.)
- Correspondence: (J.S.); (K.-B.O.); Tel.: +82-2-880-2484 (J.S.); +82-2-880-4646 (K.-B.O.)
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New insight of red seaweed derived Callophycin A as an alternative strategy to treat drug resistance vaginal candidiasis. Bioorg Chem 2020; 104:104256. [PMID: 32942217 DOI: 10.1016/j.bioorg.2020.104256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 08/07/2020] [Accepted: 08/30/2020] [Indexed: 12/12/2022]
Abstract
Marine natural products are recognised as one among the major contributors of several important biological functions. The arguments has made to utilization of natural products against different kinds of infectious diseases. In the present study, Callophycin A was successfully prepared and its anti-candidal activity was evaluated through in-vitro and in-vivo methods. The in-vitro results revealed that, Callophycin A significantly inhibits the azole resistant and sensitive C. albicans. Further, in-vivo animal experiments have shown the effective reduction in CFU of C. albicans from its beginning day of the treatment as compared to the disease control group. At the end of Callophycin A administration, there was a decrease in inflammatory response and immune molecules such as IL-6, IL-12, IL-17, IL-22, TNF-α, macrophages, CD4 and CD8 cells were observed. Whereas the animals in the disease control group expressed all the parameters with the elevated level as compared to the control group. There are no hematological abnormalities such as neutropenia, lymphocytosis and eosinophilia was observed in any animal groups except the disease control group. Finally, the evidence based prediction of anti-candidal efficacious of Callophycin A was demonstrated.
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Bae J, Cho E, Park JS, Won TH, Seo SY, Oh DC, Oh KB, Shin J. Isocadiolides A-H: Polybrominated Aromatics from a Synoicum sp. Ascidian. JOURNAL OF NATURAL PRODUCTS 2020; 83:429-437. [PMID: 31967465 DOI: 10.1021/acs.jnatprod.9b00968] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Isocadiolides A-H (1-8) and cadiolide N (9), new polybrominated aromatic compounds, were isolated from a Korean Synoicum sp. ascidian. On the basis of the results of extensive spectroscopic analyses, these compounds possessed tris-bromohydroxyphenyl moieties as a common structural motif, while their cores varied [cyclopentenedione (1-5), dihydrofuran (6 and 7), pyranone (8), and furanone (9)], reflecting different extents of rearrangement and oxidation. Several of these compounds exhibited weak antibacterial activities and moderate abilities to inhibit the microbial enzymes sortase A and isocitrate lyase.
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Affiliation(s)
- Jongkyoon Bae
- Natural Products Research Institute, College of Pharmacy , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-742 , Korea
| | - Eunji Cho
- Department of Agricultural Biotechnology, College of Agriculture and Life Science , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-921 , Korea
| | - Jae Sung Park
- Natural Products Research Institute, College of Pharmacy , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-742 , Korea
| | - Tae Hyung Won
- Natural Products Research Institute, College of Pharmacy , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-742 , Korea
| | - Su-Yuan Seo
- Natural History Museum , Ehwa Womans University , 52 Ewhayeodae-gil , Seodaemun, Seoul 03760 , Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-742 , Korea
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture and Life Science , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-921 , Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy , Seoul National University , San 56-1 , Sillim, Gwanak, Seoul 151-742 , Korea
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Abstract
Candida albicans has remained the main etiological agent of candidiasis, challenges clinicians with high mortality and morbidity. The emergence of resistance to antifungal drugs, toxicity and lower efficacy have all contributed to an urgent need to develop alternative drugs aiming at novel targets in C. albicans. Targeting the production of virulence factors, which are essential processes for infectious agents, represents an attractive substitute for the development of newer anti-infectives. The present review highlights the recent developments made in the understanding of the pathogenicity of C. albicans. Production of hydrolytic enzymes, morphogenesis and biofilm formation, along with their molecular and metabolic regulation in Candida are discussed with regard to the development of novel antipathogenic drugs against candidiasis. Over the last decade, candidiasis has remained a major problematic disease worldwide. In spite of the existence of many antifungal drugs, the treatment of such diseases has still remained unsuccessful due to drug inefficacy. Therefore, there is a need to discover antifungals with different modes of action, such as antipathogenic drugs against Candida albicans. Here, we describe how various types of virulence factors such as proteinase, phospholipase, hemolysin, adhesion, morphogenesis and biofilm formation, could be targeted to develop novel therapeutics. We can inhibit production of these virulence factors by controlling their molecular/metabolic regulation.
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Hwang JY, Lee JH, Park SC, Lee J, Oh DC, Oh KB, Shin J. New Peptides from The Marine-Derived Fungi Aspergillus allahabadii and Aspergillus ochraceopetaliformis. Mar Drugs 2019; 17:md17090488. [PMID: 31438635 PMCID: PMC6780696 DOI: 10.3390/md17090488] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/19/2019] [Accepted: 08/19/2019] [Indexed: 12/29/2022] Open
Abstract
Four new peptides were isolated from the culture broths of the marine-derived fungi Aspergillus allahabadii and A. ochraceopetaliformis. Based on the results of chemical and spectroscopic analyses, two compounds (1 and 2) from A. allahabadii were determined to be cyclopentapeptides, while those from A. ochraceopetaliformis were a structurally-related cyclodepsihexapeptide (3) and its linear analog (4). In addition to the presence of a D-amino acid residue, the almost reversed sequence of peptides in 3 and 4, relative to those of the 1 and 2, is notable. These new compounds exhibited moderate inhibition against the enzyme sortase A as well as a weak inhibition against isocitrate lyase (2).
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Affiliation(s)
- Ji-Yeon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Jung-Ho Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Sung Chul Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Jayho Lee
- Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-921, Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-921, Korea.
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea.
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