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Guo SC, Yu B, Jia Q, Yan HY, Wang LQ, Sun FF, Ma TH, Yang H. Loureirin C extracted from Dracaena cochinchinensis S.C. Chen prevents rotaviral diarrhea in mice by inhibiting the intestinal Ca 2+-activated Cl - channels. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:117077. [PMID: 37625605 DOI: 10.1016/j.jep.2023.117077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/17/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Resina Draconis (RD) is the red resin of Dracaena cochinchinensis (Lour.) S.C. Chen and most used as a hemostatic drug in traditional Chinese medicine. Recent studies have reported that RD has a therapeutic effect on gastrointestinal diseases. Loureirin A, B, and C (LA, LB, and LC) are dihydrochalcone compounds isolated from RD. AIM OF THE STUDY Dehydration is the primary cause of death in rotaviral diarrhea. Inhibition of Ca2+-activated Cl- channels (CaCCs)-mediated Cl- secretion significantly reduced fluid secretion in rotaviral diarrhea. RD was used to treat digestive diseases such as diarrhea and abdominal pain; however, the pharmacological mechanism remains unclear. This study investigated the effects of RD and loureirin on intestinal Cl- channels and their therapeutic effects on rotavirus-induced diarrhea, aiming to reveal RD's molecular basis, targets, and mechanisms for treating rotaviral diarrhea. MATERIALS AND METHODS Cell-based fluorescence quenching assays were used to examine the effect of RD and loureirin on Cl- channels activity. Electrophysiological properties were tested using short-circuit current experiments in epithelial cells or freshly isolated mouse intestinal tissue. Fecal water content, intestinal peristalsis rate, and smooth muscle contraction were measured in neonatal mice infected with SA-11 rotavirus before and after LC treatment or adult mice. RESULTS RD, LA, LB, and LC inhibited CaCCs-mediated Cl- current in HT-29 cells and colonic epithelium. The inhibitory effect of LC on CaCCs was primarily on the apical side in epithelial cells, which may be partially produced by affecting cytoplasmic Ca2+ levels. LC significantly inhibited TMEM16A-mediated Cl- current. Characterization studies revealed that LC inhibited basolateral K+ channel activity without affecting Na+/K+-ATPase activity in the colonic epithelium. Although LC activated the cystic fibrosis transmembrane regulator in epithelial cells, its effect was not apparent in colonic epithelium. In vivo, LC significantly reduced the fecal water content, intestinal peristalsis rate, and smooth muscle contraction of mice infected with rotavirus. CONCLUSION RD and its active compound LC inhibit intestinal CaCCs activity, which might mediate the anti-rotaviral diarrheal effect of RD.
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Affiliation(s)
- Si-Cheng Guo
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
| | - Bo Yu
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
| | - Qian Jia
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
| | - Han-Yu Yan
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
| | - Li-Qin Wang
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
| | - Fang-Fang Sun
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China; Nuclear Medicine Department, The First Affiliated Hospital of Dalian Medical University, Dalian, 116021, PR China.
| | - Tong-Hui Ma
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
| | - Hong Yang
- School of Life Sciences, Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian, 116082, PR China.
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Zhu X, Du C, Mohsin A, Yin Q, Xu F, Liu Z, Wang Z, Zhuang Y, Chu J, Guo M, Tian X. An Efficient High-Throughput Screening of High Gentamicin-Producing Mutants Based on Titer Determination Using an Integrated Computer-Aided Vision Technology and Machine Learning. Anal Chem 2022; 94:11659-11669. [PMID: 35942642 DOI: 10.1021/acs.analchem.2c02289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The "design-build-test-learn" (DBTL) cycle has been adopted in rational high-throughput screening to obtain high-yield industrial strains. However, the mismatch between build and test slows the DBTL cycle due to the lack of high-throughput analytical technologies. In this study, a highly efficient, accurate, and noninvasive detection method of gentamicin (GM) was developed, which can provide timely feedback for the high-throughput screening of high-yield strains. First, a self-made tool was established to obtain data sets in 24-well plates based on the color of the cells. Subsequently, the random forest (RF) algorithm was found to have the highest prediction accuracy with an R2 value of 0.98430 for the same batch. Finally, a stable genetically high-yield strain (998 U/mL) was successfully screened out from 3005 mutants, which was verified to improve the titer by 72.7% in a 5 L bioreactor. Moreover, the verified new data sets were updated on the model database in order to improve the learning ability of the DBTL cycle.
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Affiliation(s)
- Xiaofeng Zhu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Congcong Du
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Ali Mohsin
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Qian Yin
- College of Biological & Medical Engineering, South-Central University for Nationalities, Minzu Road 182, Wuhan, Hubei 430070, China
| | - Feng Xu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Zebo Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Zejian Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Yingping Zhuang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Ju Chu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Meijin Guo
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
| | - Xiwei Tian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China.,School of Biotechnology, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China
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Thu ZM, Myo KK, Aung HT, Armijos C, Vidari G. Flavonoids and Stilbenoids of the Genera Dracaena and Sansevieria: Structures and Bioactivities. Molecules 2020; 25:molecules25112608. [PMID: 32503357 PMCID: PMC7321247 DOI: 10.3390/molecules25112608] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 12/22/2022] Open
Abstract
The genera Dracaena and Sansevieria (Asparagaceae, Nolinoideae) are still poorly resolved phylogenetically. Plants of these genera are commonly distributed in Africa, China, Southeast Asia, and America. Most of them are cultivated for ornamental and medicinal purposes and are used in various traditional medicines due to the wide range of ethnopharmacological properties. Extensive in vivo and in vitro tests have been carried out to prove the ethnopharmacological claims and other bioactivities. These investigations have been accompanied by the isolation and identification of hundreds of phytochemical constituents. The most characteristic metabolites are steroids, flavonoids, stilbenes, and saponins; many of them exhibit potent analgesic, anti-inflammatory, antimicrobial, antioxidant, antiproliferative, and cytotoxic activities. This review highlights the structures and bioactivities of flavonoids and stilbenoids isolated from Dracaena and Sansevieria.
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Affiliation(s)
- Zaw Min Thu
- Department of Chemistry, Kalay University, Kalay 03044, Sagaing Region, Myanmar;
- Correspondence: (Z.M.T.); (C.A.); (G.V.)
| | - Ko Ko Myo
- Department of Chemistry, Kalay University, Kalay 03044, Sagaing Region, Myanmar;
| | - Hnin Thanda Aung
- Department of Chemistry, University of Mandalay, Mandalay 100103, Myanmar;
| | - Chabaco Armijos
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador
- Correspondence: (Z.M.T.); (C.A.); (G.V.)
| | - Giovanni Vidari
- Medical Analysis Department, Faculty of Science, Tishk International University, Erbil 44001, Iraq
- Correspondence: (Z.M.T.); (C.A.); (G.V.)
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