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Cui L, Ma Z, Li W, Ma H, Guo S, Wang D, Niu Y. Inhibitory activity of flavonoids fraction from Astragalus membranaceus Fisch. ex Bunge stems and leaves on Bacillus cereus and its separation and purification. Front Pharmacol 2023; 14:1183393. [PMID: 37538180 PMCID: PMC10395332 DOI: 10.3389/fphar.2023.1183393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/13/2023] [Indexed: 08/05/2023] Open
Abstract
Introduction: Astragalus membranaceus Fisch. ex Bunge is a traditional botanical drug with antibacterial, antioxidant, antiviral, and other biological activities. In the process of industrialization of A. membranaceus, most of the aboveground stems and leaves are discarded without resource utilization except for a small amount of low-value applications such as composting. This study explored the antibacterial activity of A. membranaceus stem and leaf extracts to evaluate its potential as a feed antibiotic substitute. Materials and methods: The antibacterial activity of the flavonoid, saponin, and polysaccharide fractions in A. membranaceus stems and leaves was evaluated by the disk diffusion method. The inhibitory activity of the flavonoid fraction from A. membranaceus stems and leaves on B. cereus was explored from the aspects of the growth curve, cell wall, cell membrane, biofilm, bacterial protein, and virulence factors. On this basis, the flavonoid fraction in A. membranaceus stems and leaves were isolated and purified by column chromatography to determine the main antibacterial components. Results: The flavonoid fraction in A. membranaceus stems and leaves had significant inhibitory activity against B. cereus, and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were 1.5625 and 6.25 mg/mL, respectively. A. membranaceus stem and leaf flavonoid fraction can induce death of B. cereus in many ways, such as inhibiting growth, destroying cell wall and cell membrane integrity, inhibiting biofilm formation, inhibiting bacterial protein synthesis, and downregulating virulence factor expression. In addition, it was clear that the main flavonoid with antibacterial activity in A. membranaceus stems and leaves was isoliquiritigenin. Molecular docking showed that isoliquiritigenin could form a hydrogen bonding force with FtsZ. Conclusion: A. membranaceus stem and leaf flavonoid fractions had significant inhibitory activity against B. cereus, and the main chemical composition was isoliquiritigenin.
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Affiliation(s)
- Liyan Cui
- College of Grassland Science, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Zhennan Ma
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Wenhui Li
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Haihui Ma
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Shang Guo
- Shanxi Institute for Functional Food, Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Defu Wang
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Yanbing Niu
- College of Grassland Science, Shanxi Agricultural University, Jinzhong, Shanxi, China
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, Shanxi, China
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Kagan M, Chlenov M, Melnikov S, McConnell O, Bach AC, Carter G, Failli A, Caggiano TJ, Shumsky JS, Lubda D. Normal-Phase Automated Mass-Directed HPLC Purification of a Pyrrolobenzodiazepine Library with Vasopressin Agonist Activity. ACTA ACUST UNITED AC 2009; 11:704-19. [DOI: 10.1021/cc9000407] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Kagan
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Michael Chlenov
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Sergey Melnikov
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Oliver McConnell
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Alvin C. Bach
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Guy Carter
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Amedeo Failli
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Thomas J. Caggiano
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Jay S. Shumsky
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
| | - Dieter Lubda
- Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Chemical and Screening Sciences, Wyeth Research, CN 8000, Princeton, New Jersey 08543, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, Discovery Analytical Chemistry, Chemical Technologies, Wyeth Pharmaceuticals, 401 N. Middletown Rd, Pearl River, New York 10965, and Global Production, Merck KGaA, Frankfurter Strausse 250D
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