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Thuy NTT, Hien HTM, Ha NC, Thom LT, Hong DD, Thinh NV, Dan NT, Hoi ND, Loan VT, Quang HD, Hang DTT, Kiem PV, Tai BH, Hang NTM, Dat NT, Nhiem NX. Chemical constituents from the heterotrophic marine microalgae Aurantiochytrium sp. SC145 and their antimicrobial activities. Nat Prod Res 2024; 38:789-795. [PMID: 37086471 DOI: 10.1080/14786419.2023.2201882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 04/04/2023] [Indexed: 04/24/2023]
Abstract
One new indol, N-methoxymethyltryptophol (1), one new phenolic, (2 R)-2-(4-hydroxyphenyl)ethyl 2-hydroxy-3-phenylpropanoate (2) and fifteen known compounds (3-17) were isolated from the methanol extract of the fermentation of marine microalgae Aurantiochytrium sp. SC145. Their structures were elucidated by 1D-, 2D-NMR spectroscopic analysis, HR-ESI-MS, quantum chemical calculation methods and by comparing their NMR data with those reported in the literature. All compounds were evaluated for their antimicrobial activities against microorganisms. Compounds 2, 3 and 11 significantly exhibited antimicrobial activities on all tested Gram-(+), Gram-(-) bacteria and the yeast C. albicans with MIC values ranging from 32 to 256 µg/mL.
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Affiliation(s)
- Nguyen Thi Thu Thuy
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Joint Vietnam - Russia Tropical Science and Technology Research Center, Hanoi, Vietnam
| | | | | | - Le Thi Thom
- Institute of Biotechnology, VAST, Hanoi, Vietnam
| | | | - Nguyen Van Thinh
- Joint Vietnam - Russia Tropical Science and Technology Research Center, Hanoi, Vietnam
| | - Nguyen Trong Dan
- Joint Vietnam - Russia Tropical Science and Technology Research Center, Hanoi, Vietnam
| | - Nguyen Dang Hoi
- Joint Vietnam - Russia Tropical Science and Technology Research Center, Hanoi, Vietnam
| | - Vu Thi Loan
- Joint Vietnam - Russia Tropical Science and Technology Research Center, Hanoi, Vietnam
| | - Hoang Duc Quang
- Joint Vietnam - Russia Tropical Science and Technology Research Center, Hanoi, Vietnam
| | | | - Phan Van Kiem
- Institute of Marine Biochemistry, VAST, Hanoi, Vietnam
| | - Bui Huu Tai
- Institute of Marine Biochemistry, VAST, Hanoi, Vietnam
| | | | - Nguyen Tien Dat
- Center for Research and Technology Transfer, VAST, Hanoi, Vietnam
| | - Nguyen Xuan Nhiem
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Institute of Marine Biochemistry, VAST, Hanoi, Vietnam
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Hien HTM, Thom LT, Ha NC, Tam LT, Thu NTH, Nguyen TV, Loan VT, Dan NT, Hong DD. Characterization and Optimization of Culture Conditions for Aurantiochytrium sp. SC145 Isolated from Sand Cay (Son Ca) Island, Vietnam, and Antioxidative and Neuroprotective Activities of Its Polyunsaturated Fatty Acid Mixture. Mar Drugs 2022; 20:md20120780. [PMID: 36547927 PMCID: PMC9787583 DOI: 10.3390/md20120780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/07/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022] Open
Abstract
Aurantiochytrium is a heterotrophic marine microalga that has potential industrial applications. The main objectives of this study were to isolate an Aurantiochytrium strain from Sand Cay (Son Ca) Island, Vietnam, optimize its culture conditions, determine its nutritional composition, extract polyunsaturated fatty acids (PUFAs) in the free (FFA) and the alkyl ester (FAAE) forms, and evaluate the antioxidation and neuroprotection properties of the PUFAs. Aurantiochytrium sp. SC145 can be grown stably under laboratory conditions. Its culture conditions were optimized for a dry cell weight (DCW) of 31.18 g/L, with total lipids comprising 25.29%, proteins 7.93%, carbohydrates 15.21%, and carotenoid at 143.67 µg/L of DCW. The FAAEs and FFAs extracted from Aurantiochytrium sp. SC145 were rich in omega 3-6-9 fatty acids (40.73% and 44.00% of total fatty acids, respectively). No acute or subchronic oral toxicity was determined in mice fed with the PUFAs in FFA or FAAE forms at different doses over 90 days. Furthermore, the PUFAs in the FFA or FAAE forms and their main constituents of EPA, DHA, and ALA showed antioxidant and AChE inhibitory properties and neuroprotective activities against damage caused by H2O2- and amyloid-ß protein fragment 25-35 (Aβ25-35)-induced C6 cells. These data suggest that PUFAs extracted from Aurantiochytrium sp. SC145 may be a potential therapeutic target for the treatment of neurodegenerative disorders.
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Affiliation(s)
- Hoang Thi Minh Hien
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
- Vietnam Academy of Science and Technology, Graduate University of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
- Correspondence: (H.T.M.H.); (D.D.H.); Tel.: +84-24-37911059 (H.T.M.H.); Fax: +84-24-38363144 (H.T.M.H.)
| | - Le Thi Thom
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
| | - Nguyen Cam Ha
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
| | - Luu Thi Tam
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
| | - Ngo Thi Hoai Thu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
| | - Tru Van Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
- Vietnam Academy of Science and Technology, Graduate University of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
| | - Vu Thi Loan
- Joint Vietnam–Russia Tropical Science and Technology Research Center, 63 Nguyen Van Huyen Str., Cau Giay, Hanoi 100000, Vietnam
| | - Nguyen Trong Dan
- Joint Vietnam–Russia Tropical Science and Technology Research Center, 63 Nguyen Van Huyen Str., Cau Giay, Hanoi 100000, Vietnam
| | - Dang Diem Hong
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
- Vietnam Academy of Science and Technology, Graduate University of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
- Correspondence: (H.T.M.H.); (D.D.H.); Tel.: +84-24-37911059 (H.T.M.H.); Fax: +84-24-38363144 (H.T.M.H.)
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Dan NT, Giang LT, Dinh CN, Hai TB, Hoi ND, Loan VT, Hang DTT, Nhiem NX, Huu Tai B, Van Kiem P. Two New Sterol Sulfates from Marine Spider Conch Lambis Lambis Linnaeus, 1758. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221113184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Two new (1 and 2) and six known (3-8) compounds were isolated from the methanolic extract of the Vietnamese marine spider conch Lambis lambis Linnaeus, 1758. Based on comprehensive spectroscopic analyses, particularly HRESIMS, and 1D- and 2D-NMR spectra, their chemical structures were determined to be 25,26,27-tri-nor-cholest-5-ene-2 β,3 α,24-triol-2,24-disulfate (1), 25,26,27-tri-nor-cholesta-2 β,3 α,24-triol-3,24-disulfate (2), 25,26,27-tri-nor-cholesta-2β,3α,24-triol-2,3,24-trisulfate (solomonsterol A, 3), 1- O-arachidonoyl-3- O-stearylglycerol (4), eicosapentaenoic acid (5), adenosine (6), adenine (7), and uracil (8). This is the first report of compounds 3-8 from L. lambis.
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Affiliation(s)
| | - Le Thi Giang
- Thai Nguyen University of Medicine and Pharmacy, Thai Nguyen City, Vietnam
| | | | | | | | - Vu Thi Loan
- Vietnam - Russia Tropical Center, Hanoi, Vietnam
| | - Dan Thi Thuy Hang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Nguyen Xuan Nhiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Bui Huu Tai
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, Hanoi, Vietnam
| | - Phan Van Kiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, Hanoi, Vietnam
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Huy VV, Quang HD, Katolik A, Dan NT, Gaidar SM. The Development of Corrosion Inhibitor Used in the Automotive Coolant. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427221120028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Schülzgen A, Kawabe Y, Hanamura E, Yamanaka A, Blanche PA, Lee J, Sato H, Naito M, Dan NT, Uchida S, Tanabe Y, Peyghambarian N. Two-photon resonant third-harmonic generation in La2CuO4. Phys Rev Lett 2001; 86:3164-3167. [PMID: 11290133 DOI: 10.1103/physrevlett.86.3164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2000] [Indexed: 05/23/2023]
Abstract
Combining linear absorption and nonlinear third harmonic generation (THG) experiments, we investigate details of the electronic structure of the highly correlated electronic system in La2CuO4. We demonstrate strong THG mainly due to the charge transfer excitation from O (2p(sigma)) to Cu (3d(x2-y2)). The THG spectrum shows pronounced features due to three-photon and two-photon resonance enhancement as well as quantum interference effects. We obtain excellent agreement with a THG spectrum calculated in terms of the excitonic cluster model and can identify both odd and even symmetry excitation modes.
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Dan NT, Hanamura E. Theoretical investigation of excitonic surface states in multilayer organic quantum wells: Radiative decay rates of the first and second surface excitons. Phys Rev B Condens Matter 1996; 54:2739-2750. [PMID: 9986126 DOI: 10.1103/physrevb.54.2739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Glutsch S, Dan NT, Bechstedt F. Hartree contribution to the band-gap renormalization in semiconductor microstructures. Phys Rev B Condens Matter 1995; 52:13776-13779. [PMID: 9980587 DOI: 10.1103/physrevb.52.13776] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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