1
|
Nie J, Mei F, Zheng Y, Wen Q, Li Z, Zhang D, Li W, Guo D. Asponchimides A-E: new enantiomeric N-acetyldopamine trimers from Aspongopus chinensis. Chin J Nat Med 2023; 21:859-867. [PMID: 38035941 DOI: 10.1016/s1875-5364(23)60483-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Indexed: 12/02/2023]
Abstract
Five new racemic N-acetyldopamine (NADA) trimers, asponchimides A-E (1-5), were isolated from Aspongopus chinensis, a prominent traditional Chinese medicinal insect employed for alleviating pain, treating indigestion, and addressing kidney ailments. Compounds 1-5 were successfully resolved by chiral high-performance liquid chromatography (HPLC), yielding five pairs of enantiomers: (+)- and (-)-asponchimides A-E (1a/1b-5a/5b). Their structural identities were discerned by extensive spectroscopic analyses, including high-resolution mass spectrometry (HRMS), ultraviolet-visible (UV-Vis) spectroscopy, infrared (IR) spectroscopy, and nuclear magnetic resonance (NMR), and their absolute configurations were determined by electronic circular dichroism (ECD) calculations. Compounds 1-5 are pioneering instances of NADA trimers featuring a Δ7 double bond. When subjected to a series of bioassays, a majority of the compounds exhibited weak inhibitory activity against nitric oxide (NO) production in LPS-induced RAW 264.7 cells.
Collapse
Affiliation(s)
- Jinchun Nie
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Fang Mei
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Yueyuan Zheng
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Qiuyi Wen
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Zhenwei Li
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Daidi Zhang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Wei Li
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China.
| | - Dean Guo
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China.
| |
Collapse
|
2
|
Wen Y, Zhou X, Huo D, Chen J, Weng L, Li B, Wu Z, Zhang X, Li L. Optimization for the extraction of polysaccharides from Huidouba and their in vitro α-glucosidase inhibition mechanism. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
3
|
Jiang J, Xu Z, Chen J, Xu Z, Huang Y, Xi J, Fan L. Staphylococcus aureus-targeting peptide/surfactant assemblies for antibacterial therapy. Colloids Surf B Biointerfaces 2022; 214:112444. [PMID: 35278861 DOI: 10.1016/j.colsurfb.2022.112444] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 02/01/2022] [Accepted: 03/02/2022] [Indexed: 01/03/2023]
Abstract
To address the challenge from microbial resistance, this work developed a surfactant with 18-carbon single hydrocarbon chain and multi-amine head groups (C18N3). After assembling with Staphylococcus aureus-targeting peptide (CARG), the obtained C18N3/CARG assemblies exhibited excellent antimicrobial activities against Staphylococcus aureus and methicillin-resistant Staphylococcus aureus in vitro and in vivo, in which the targeting peptide CARG bonded specifically to Staphylococcus aureus and C18N3 killed bacteria with a mechanism of membrane disruption. Importantly, C18N3 could also work as a β-lactamase inhibitor to overcome the bacterial resistance to β-lactam antibiotics through noncompetitive inhibition. The combination of β-lactam antibiotic and C18N3/CARG assemblies more effectively suppressed methicillin-resistant Staphylococcus aureus in vitro and in vivo relative to equivalent dose of free antibiotic or C18N3. Thus, the antibacterial platform of antibiotic-carrying surfactant assemblies bearing bacteria-targeted peptides, in which C18N3 performed dual function, antibacterial agent and β-lactamase inhibitor, may help fight against the difficult-to-treat infections.
Collapse
Affiliation(s)
- Jian Jiang
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Zhilong Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jie Chen
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Ze Xu
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Ying Huang
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China
| | - Juqun Xi
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou 225009, China.
| | - Lei Fan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| |
Collapse
|
4
|
Hao Y, Sun H, Zhang X, Wu L, Zhu Z. A novel acid polysaccharide from fermented broth of Pleurotus citrinopileatus: Hypoglycemic activity in vitro and chemical structure. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128717] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
5
|
Hao Y, Sun H, Zhang X, Wu L, Zhu Z. A novel polysaccharide from Pleurotus citrinopileatus mycelia: Structural characterization, hypoglycemic activity and mechanism. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100735] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
6
|
|
7
|
Muñoz-Pina S, Ros-Lis JV, Delgado-Pinar EA, Martı Nez-Camarena A, Verdejo B, Garcı A-España E, Argüelles Á, Andrés A. Inhibitory Effect of Azamacrocyclic Ligands on Polyphenol Oxidase in Model and Food Systems. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:7964-7973. [PMID: 32609498 DOI: 10.1021/acs.jafc.0c02407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Enzymatic browning is one of the main problems faced by the food industry due to the enzyme polyphenol oxidase (PPO) provoking an undesirable color change in the presence of oxygen. Here, we report the evaluation of 10 different azamacrocyclic compounds with diverse morphologies as potential inhibitors against the activity of PPO, both in model and real systems. An initial screening of 10 ligands shows that all azamacrocyclic compounds inhibit to some extent the enzymatic browning, but the molecular structure plays a crucial role on the power of inhibition. Kinetic studies of the most active ligand (L2) reveal a S-parabolic I-parabolic noncompetitive inhibition mechanism and a remarkable inhibition at micromolar concentration (IC50 = 10 μM). Furthermore, L2 action has been proven on apple juice to significantly reduce the enzymatic browning.
Collapse
Affiliation(s)
- Sara Muñoz-Pina
- Instituto Universitario de Ingenierı́a de Alimentos para el Desarrollo (IUIAD-UPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - José V Ros-Lis
- REDOLı́, Departamento de Quı́mica Inorgánica, Universitat de València, 46100 Burjassot, Valencia, Spain
| | - Estefanı A Delgado-Pinar
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, Paterna, Valencia, Spain
| | - Alvaro Martı Nez-Camarena
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, Paterna, Valencia, Spain
| | - Begoña Verdejo
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, Paterna, Valencia, Spain
| | - Enrique Garcı A-España
- Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, Paterna, Valencia, Spain
| | - Ángel Argüelles
- Instituto Universitario de Ingenierı́a de Alimentos para el Desarrollo (IUIAD-UPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Ana Andrés
- Instituto Universitario de Ingenierı́a de Alimentos para el Desarrollo (IUIAD-UPV), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| |
Collapse
|
8
|
Qin XY, Zhang JT, Li GM, Cai MY, Lu J, Gu RZ, Liu WY. Selenium-chelating corn oligopeptide as a potential antioxidant supplement: investigation of the protein conformational changes and identification of the antioxidant fragment composition. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2020. [DOI: 10.1515/ijfe-2019-0166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AbstractA selenium-chelating corn oligopeptide (Se-COP) with high protein and low molecular weight was prepared as a selenium supplement. We utilized infrared (IR), ultraviolet (UV), and circular dichroism (CD) spectroscopy, 1-anilinonaphthalene-8-sulfonate (ANS)-binding fluorescence spectra, and isothermal titration calorimetry (ITC) to analyze and describe Se-COP and its reactions. It was concluded that the chelation reaction was a spontaneous process driven by enthalpy and entropy, with ΔH=3.79 × 104 ± 4075 cal/mol, ΔS = 146 cal/mol, ΔG = –23356.30 ± 126.94 cal/mol, binding constant Ka = 1.18 × 104 ± 855 M–1, and binding site number n = 0.13 ± 0.0126, and described as coordination bonds forming and hydrophobic interaction, as well as protein conformational changes including secondary and tertiary hydrophobic structure. Se-COP had strong antioxidant capacity, and mass spectrometry (MS) was used to identify the antioxidant peptide fragment, which was characterized as LLPPY and quantified at 428.95 ng/mg. This study indicated that Se-COP prepared by chelation may be a Se supplement with antioxidant capacity that can be applied in functional foods or ingredients.
Collapse
Affiliation(s)
- Xiu-Yuan Qin
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| | - Jiang-Tao Zhang
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| | - Guo-Ming Li
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| | - Mu-Yi Cai
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| | - Jun Lu
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| | - Rui-Zeng Gu
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| | - Wen-Ying Liu
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co. Ltd., Beijing 100015, People's Republic of China
| |
Collapse
|
9
|
Lien CW, Yu PH, Chang HT, Hsu PH, Wu T, Lin YW, Huang CC, Lai JY. DNA engineered copper oxide-based nanocomposites with multiple enzyme-like activities for specific detection of mercury species in environmental and biological samples. Anal Chim Acta 2019; 1084:106-115. [DOI: 10.1016/j.aca.2019.08.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 08/02/2019] [Accepted: 08/04/2019] [Indexed: 10/26/2022]
|