1
|
Liang F, Meng K, Pu X, Cao Y, Shi Y, Shi J. Deciphering the binding behavior and interaction mechanism of apigenin and α-glucosidase based on multi-spectroscopic and molecular simulation studies. Int J Biol Macromol 2024; 264:130535. [PMID: 38432277 DOI: 10.1016/j.ijbiomac.2024.130535] [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: 10/18/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
This study investigated the molecular mechanism underlying the binding interaction between apigenin (API) and α-glucosidase (α-glu) by a combination of experimental techniques and computational simulation strategies. The spontaneously formation of stable API-α-glu complex was mainly driven by hydrogen bonds and hydrophobic forces, leading to a static fluorescence quenching of α-glu. The binding of API induced secondary structure and conformation changes of α-glu, decreasing the surface hydrophobicity of protein. Computational simulation results demonstrated that API could bind into the active cavity of α-glu via its interaction with active residues at the binding site. The important roles of key residues responsible for the binding stability and affinity between API and α-glu were further revealed by MM/PBSA results. In addition, it can be found that the entrance of active site tended to close after API binding as a result of its interaction with gate keeping residues. Furthermore, the structural basis for the binding interaction behavior of API was revealed and visualized by weak interaction analysis. The findings of our study revealed atomic-level mechanism of the interaction between API, which might shed light on the development of better inhibitors.
Collapse
Affiliation(s)
- Fuqiang Liang
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China.
| | - Keyu Meng
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Xinran Pu
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Yubo Cao
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Yumeng Shi
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Jiayi Shi
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| |
Collapse
|
2
|
Thongpat K, Holasut P, Ontawong A, Inchai J, Duangjai A, Rukachaisirikul V, Vaddhanaphuti CS, Tadpetch K. Synthesis and potential antidiabetic and lipid-lowering activities of putative asperidine B and its desmethyl analogue. Bioorg Med Chem Lett 2023; 93:129437. [PMID: 37549851 DOI: 10.1016/j.bmcl.2023.129437] [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: 06/17/2023] [Revised: 07/29/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
Putative asperidine B is an unnatural 2,6-disubstituted piperidin-3-ol and a structural isomer of (+)-preussin, a well-known pyrrolidin-3-ol alkaloid. This work reports the first enantioselective synthesis of putative asperidine B and its desmethyl analogue via a chiron approach starting from d-isoascorbic acid as well as evaluation of their free-radical scavenging, antidiabetic, and anti-hyperlipidemic activities. Both putative asperidine B and its desmethyl analogue markedly reduced the total reactive oxygen species (ROS) without cytotoxicity in hepatocellular carcinoma (HepG2) cells. The desmethyl analogue was a potent inducer for two antioxidant gene expression, glutathione peroxidase and superoxide dismutase, whereas putative asperidine B only induced superoxide dismutase. In addition, putative asperidine B exerted potent antidiabetic activity via α-glucosidase inhibition (IC50 = 0.143 ± 0.001 mg/mL) comparable to that of acarbose, an antidiabetic drug. Consistent with the parent asperidine B (preussin), both putative asperidine B and its desmethyl analogue inhibited cholesterol absorption in the intestinal Caco-2 cells. These novel and promising antioxidant, antidiabetic, and lipid-lowering effects of piperidin-3-ols could offer a starting point for this class of compounds for obesity and diabetic drug discovery.
Collapse
Affiliation(s)
- Kittisak Thongpat
- Division of Physical Science and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Pannita Holasut
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Atcharaporn Ontawong
- Division of Physiology, School of Medical Sciences, University of Phayao, Phayao 56000, Thailand
| | - Jakkapong Inchai
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Acharaporn Duangjai
- Division of Physiology, School of Medical Sciences, University of Phayao, Phayao 56000, Thailand
| | - Vatcharin Rukachaisirikul
- Division of Physical Science and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Chutima S Vaddhanaphuti
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kwanruthai Tadpetch
- Division of Physical Science and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
| |
Collapse
|
3
|
Chen S, Xi M, Gao F, Li M, Dong T, Geng Z, Liu C, Huang F, Wang J, Li X, Wei P, Miao F. Evaluation of mulberry leaves’ hypoglycemic properties and hypoglycemic mechanisms. Front Pharmacol 2023; 14:1045309. [PMID: 37089923 PMCID: PMC10117911 DOI: 10.3389/fphar.2023.1045309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 03/31/2023] [Indexed: 04/08/2023] Open
Abstract
The effectiveness of herbal medicine in treating diabetes has grown in recent years, but the precise mechanism by which it does so is still unclear to both medical professionals and diabetics. In traditional Chinese medicine, mulberry leaf is used to treat inflammation, colds, and antiviral illnesses. Mulberry leaves are one of the herbs with many medicinal applications, and as mulberry leaf study grows, there is mounting evidence that these leaves also have potent anti-diabetic properties. The direct role of mulberry leaf as a natural remedy in the treatment of diabetes has been proven in several studies and clinical trials. However, because mulberry leaf is a more potent remedy for diabetes, a deeper understanding of how it works is required. The bioactive compounds flavonoids, alkaloids, polysaccharides, polyphenols, volatile oils, sterols, amino acids, and a variety of inorganic trace elements and vitamins, among others, have been found to be abundant in mulberry leaves. Among these compounds, flavonoids, alkaloids, polysaccharides, and polyphenols have a stronger link to diabetes. Of course, trace minerals and vitamins also contribute to blood sugar regulation. Inhibiting alpha glucosidase activity in the intestine, regulating lipid metabolism in the body, protecting pancreatic -cells, lowering insulin resistance, accelerating glucose uptake by target tissues, and improving oxidative stress levels in the body are some of the main therapeutic properties mentioned above. These mechanisms can effectively regulate blood glucose levels. The therapeutic effects of the bioactive compounds found in mulberry leaves on diabetes mellitus and their associated molecular mechanisms are the main topics of this paper’s overview of the state of the art in mulberry leaf research for the treatment of diabetes mellitus.
Collapse
Affiliation(s)
- Sikai Chen
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Miaomiao Xi
- The Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
- Xi’an TANK Medicinal Biology Institute, Xi’an, China
| | - Feng Gao
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Min Li
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - TaiWei Dong
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Zhixin Geng
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Chunyu Liu
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Fengyu Huang
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Jing Wang
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Xingyu Li
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Peifeng Wei
- Shaanxi University of Chinese Medicine, Xianyang, China
- The Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
- *Correspondence: Peifeng Wei, ; Feng Miao,
| | - Feng Miao
- The Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
- *Correspondence: Peifeng Wei, ; Feng Miao,
| |
Collapse
|
4
|
Dong Q, Hu N, Yue H, Wang H, Wei Y. Rapid screening of α-glucosidase inhibitors in Hypericum perforatum L. using bio-affinity chromatography coupled with UPLC/MS. Biomed Chromatogr 2023; 37:e5536. [PMID: 36264709 DOI: 10.1002/bmc.5536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 01/18/2023]
Abstract
α-glucosidase inhibitors (AGIs) are widely used for the treatment of type 2 diabetes, but their side effects have made it to develop novel and alternative AGIs immediately. In this study, the extract of Hypericum perforatum L. (HPE) has been confirmed to have α-glucosidase inhibitory activity in vitro and in vivo. Seven active compounds, rutin, hyperoside, isoquercitrin, avicularin, quercitrin, quercetin, and biapigenin, were screened based on a bio-affinity chromatography column with α-glucosidase enzyme-conjugated solid phase and UPLC/MS, which exhibited excellent α-glycosidase inhibitory effects by the determined IC50 values. The mechanism of α-glycosidase inhibitory activity of biapigenin was studied for the first time. The results showed that biapigenin was a high-potential, reversible, and mixed enzyme inhibitor. Analysis by molecular docking further revealed that hydrophobic interactions were generated by interactions between biapigenin and amino acid residues LYS156, PHE303, PHE314, and LEU313. In addition, hydrogen bonding occurred between biapigenin and α-glucosidase amino acid residues ASP307, SER241, and LYS156. This research identified that biapigenin could be a novel AGI and further applied to the development of potential anti-diabetic drugs. Furthermore, our studies established a rapid in vitro screening method for AGIs from plants.
Collapse
Affiliation(s)
- Qi Dong
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Qinghai, China
| | - Na Hu
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Qinghai, China
| | - Huilan Yue
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Qinghai, China
| | - Honglun Wang
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Qinghai, China
| | - Yue Wei
- Henan Natural Product Biotechnology, Co., LTD., Henan, China
| |
Collapse
|
5
|
Alam N, Najnin H, Islam M, Shakya S, Khan IM, Zaidi R. Biochemical and histopathological analysis after sub-chronic administration of oxyresveratrol in Wistar rats. Drug Chem Toxicol 2023; 46:166-175. [PMID: 34913788 DOI: 10.1080/01480545.2021.2015243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Oxyresveratrol (OXY) is a naturally occurring phenolic compound; however, there are no toxicity studies reported on its long term use. The aim of our work was to demonstrate the evaluation of acute and sub-chronic toxicity of oxyresveratrol in rats to assess its safety profile. To evaluate the LD50 value, 2000 mg/kg of oxyresveratrol was administered to Wistar rats by oral gavage. For sub-chronic toxicity assessment, 80 Wistar rats were randomly divided into four groups (10 animal/sex/group) and oxyresveratrol administered at a dose of 50, 100, 150 mg/kg/day by oral gavage. Bodyweight, food, and water consumption were monitored every week. At the end of the experiments, biochemical and hematological parameters were analyzed. Gross and microscopic organ analyses were also carried out. LD50 of oxyresveratrol was greater than 2000 mg/kg sub-chronic administration of oxyresveratrol did not influence any mortality. Doses of 50 and 100 mg/kg of oxyresveratrol did not produce any sign of toxicity. However, the 150 mg/kg oxyresveratrol group depicted changes in multiple biochemical and hematological parameters with changes in the pathology of cardiac, hepatic, and renal tissues when compared with control. Therefore, no observed adverse effect level (NOAEL) of oxyresveratrol was observed to be 100 mg/kg per day for both male and female rats.
Collapse
Affiliation(s)
- Nisat Alam
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Hasina Najnin
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Maidul Islam
- Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh, India
| | - Sonam Shakya
- Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh, India
| | - Ishaat M Khan
- Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh, India
| | - Rana Zaidi
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| |
Collapse
|
6
|
Li W, Tian H, Guo F, Wu Y. Inhibition characteristics and mechanism of tyrosinase using five citrus flavonoids: A spectroscopic and molecular dynamics simulation study. J Food Biochem 2022; 46:e14484. [PMID: 36239431 DOI: 10.1111/jfbc.14484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/29/2022] [Accepted: 09/30/2022] [Indexed: 01/14/2023]
Abstract
This work presents a comparative analysis of the tyrosinase inhibitory effects of five citrus flavonoids, namely hesperetin, hesperidin, neohesperidin, naringenin and naringin. Visbile, fluorescence, and fourier transform infrared (FITR) spectroscopies, and molecular dynamic methods were employed to compare the anti-tyrosinase mechanisms of each flavonoid. Hesperetin, neohesperidin, naringenin and naringin exhibited potent inhibitory activities with IC50 values of 0.74 ± 0.05, 2.19 ± 0.03, 7.50 ± 9.82 and 24.94 ± 8.43 μmol/ml, respectively, all of which were higher than that of kojic acid (0.04 ± 0.02 μmol/ml). The enzymatic kinetics results suggested that hesperetin and naringenin were reversible inhibitors on tyrosinase in the mixed-type manner. H-bond and hydrophobic interactions were found to drive the binding of tyrosinase with hesperetin or naringenin, which subsequently changed the FTIR spectroscopy results by decreasing the α-helix ratio and increasing the β-turn, β-sheet and random coil ratio in tyrosinase. Molecular dynamics simulation not only verified some of the experimental results, but also suggested that the binding of hesperetin and naringenin to tyrosinase was spontaneous. The findings of this study indicate that citrus flavonoids are a promising dietary resource for tyrosinase inhibition. PRACTICAL APPLICATIONS: Hesperetin, hesperidin, neohesperidin, naringenin and naringin were typical citrus flavonoids that have anti-obesity, anti-oxidation, anti-inflammation and anti-diabetes activities. Current study suggested that hesperetin and naringenin were effective reversible inhibitors on tyrosinase in the mixed-type manner. Hesperetin and naringenin might serve as nutritional and chemical agents for regulating the tyrosinase activity to control melanin level in vivo.
Collapse
Affiliation(s)
- Wenfeng Li
- School of Life Science and Biotechnology
- , Yangtze Normal University, Chongqing, China
| | - Hua Tian
- School of Life Science and Biotechnology
- , Yangtze Normal University, Chongqing, China
| | - Futing Guo
- School of Life Science and Biotechnology
- , Yangtze Normal University, Chongqing, China
| | - Yingmei Wu
- The Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs, College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, China
| |
Collapse
|
7
|
Digestive enzymes inhibition, antioxidant and antiglycation activities of phenolic compounds from jabuticaba (Plinia cauliflora) peel. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
8
|
Li S, Chen C, Ahn DU, Ma M, Li X, Huang X. Interaction research of resveratrol and phosvitin based on fluorescence spectroscopy and molecular docking analysis. J Food Sci 2022; 87:4416-4428. [PMID: 36120929 DOI: 10.1111/1750-3841.16327] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 07/24/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022]
Abstract
Phosvitin (PV) is the main phosphoprotein in egg yolk, with the highest degree of phosphorylation known in nature. The PV and resveratrol (Res) can form a complex, thus effectively improve the solubility of Res. In this work, the interaction between Res and PV was investigated by the fluorescence spectroscopy and molecular docking. The fluorescence emission intensity of PV became weak along with a red shift when it interacted with Res and the antioxidant activity was enhanced. The quenching constants of the interaction systems were 1.12×104 M-1 and 9.40×103 M-1 at 25°C and 35°C, respectively, which indicated the presence of static quenching phenomena between them. The binding constant was 1.80×104 M-1 , and the number of corresponding binding sites was approximately equal to one. The thermodynamic results revealed the combination was spontaneous, and the change of enthalpy and entropy was ∆H = 53.50 kJ/mol, ∆S = 261.00 J/mol·K, respectively. It indicated that the interaction forces between Res and PV were mainly hydrophobic interaction and hydrogen bonding. Molecular docking showed the binding mode, which was consistent with the experiment results. The research on the interaction between Res and PV provided theoretical guidance for the application of Res in food. PRACTICAL APPLICATION: PV is the most highly phosphorylated protein in nature and has pro-calcium absorption effects. Res is a polyphenol with strong antioxidant and anti-inflammatory activity, but its poor solubility limits its application. In this study, the solubility of Res was considerably enhanced by compounding Res and PV, and the antioxidant activity of Res was well retained. It increases the value of Res in food and other applications and opens up new possibilities for processing and utilization of PV.
Collapse
Affiliation(s)
- Songming Li
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, P. R. China.,Yibin Forestry and Bamboo Industry Research Institute, Yibin, Sichuan, P. R. China
| | - Chan Chen
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, P. R. China
| | - Dong Uk Ahn
- Animal Science Department, Iowa State University, Ames, Iowa, USA
| | - Meihu Ma
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, P. R. China
| | - Xiaomeng Li
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, P. R. China
| | - Xi Huang
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, P. R. China
| |
Collapse
|
9
|
Jan B, Zahiruddin S, Basist P, Irfan M, Abass S, Ahmad S. Metabolomic Profiling and Identification of Antioxidant and Antidiabetic Compounds from Leaves of Different Varieties of Morus alba Linn Grown in Kashmir. ACS OMEGA 2022; 7:24317-24328. [PMID: 35874221 PMCID: PMC9301699 DOI: 10.1021/acsomega.2c01623] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mulberry (Morus alba L.) is commonly cultivated in Asian countries as a traditional medicine and food supplement. Four Kashmiri Morus alba varieties (Zagtul, Chtattatual, Chattatual Zaingir, and Brentul Kashmir) were evaluated for their proximate composition, mineral content, total phenolic and flavonoid content, antioxidant potential, and antihyperglycemic activity. Furthermore, TLC-MS-bioautography was used for the identification of antioxidant and antidiabetic compounds in the best active extract. Lastly, UPLC-MS was employed for metabolomic profiling of the best variety of M. alba. Among all the varieties, the Zagtul variety was found to have the highest phenolic (71.10 ± 0.44 mg GAE/g DW) and flavonoid (53.22 ± 0.69 mg rutin/g DW) content. The highest antioxidant potential (DPPH) with an IC50 value of 107.88 ± 3.8 μg/mL was recorded for the Zagtul variety. Similarly, α-amylase and α-glucosidase inhibition for antidiabetic potential with IC50 74.76 ± 6.76 and 109.19 ± 5.78 μg/mL, respectively, was recorded in Zagtul variety. TLC-MS-bioautography for identification of bioactive compounds revealed the presence of chlorogenic acid for antioxidant potential and 1-deoxynojirimycin (DNJ) and syringic acid for antidiabetic potential. Further, bioactive compounds responsible for diverse functions of M. alba were confirmed by UPLC-MS in both negative and positive modes. However, major compounds in the Zagtul variety were identified as chlorogenic acid, moracin N, gallic acid, ferulic acid, morin, 1-deoxynojirimycin, and syringic acid. Hence, based on our findings, it can be concluded that M. alba leaves can be consumed as a promising dietary supplement and can be formulated as phytopharmaceutical for the management of various metabolic disorders.
Collapse
Affiliation(s)
- Bisma Jan
- Department
of Food Technology School of Interdisciplinary Science & Technology, Jamia Hamdard, New Delhi 110062, India
- Bioactive
Natural Product Laboratory, Department of Pharmacognosy and Phytochemistry,
School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi 110062, India
| | - Sultan Zahiruddin
- Bioactive
Natural Product Laboratory, Department of Pharmacognosy and Phytochemistry,
School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi 110062, India
| | - Parakh Basist
- Bioactive
Natural Product Laboratory, Department of Pharmacognosy and Phytochemistry,
School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi 110062, India
| | - Mohammad Irfan
- Department
of Biotechnology, Jamia Milia Islamia, New Delhi 110025, India
| | - Sageer Abass
- Department
of Biotechnology, Jamia Milia Islamia, New Delhi 110025, India
| | - Sayeed Ahmad
- Department
of Food Technology School of Interdisciplinary Science & Technology, Jamia Hamdard, New Delhi 110062, India
| |
Collapse
|
10
|
Assessment of eight Morus indica cultivars for 1-deoxynojirmycin content, antioxidant and anti-diabetic potential: optimization of ultrasound assisted process for bioactive enriched leaf extract. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01438-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
11
|
Li R, Su X, Zhou R, Zhang Y, Wang T. Molecular mechanism of mulberry response to drought stress revealed by complementary transcriptomic and iTRAQ analyses. BMC PLANT BIOLOGY 2022; 22:36. [PMID: 35039015 PMCID: PMC8762937 DOI: 10.1186/s12870-021-03410-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND The use of mulberry leaves has long been limited to raising silkworms, but with the continuous improvement of mulberry (Morus alba) resource development and utilization, various mulberry leaf extension products have emerged. However, the fresh leaves of mulberry trees have a specific window of time for picking and are susceptible to adverse factors, such as drought stress. Therefore, exploring the molecular mechanism by which mulberry trees resist drought stress and clarifying the regulatory network of the mulberry drought response is the focus of the current work. RESULTS In this study, natural and drought-treated mulberry grafted seedlings were used for transcriptomic and proteomic analyses (CK vs. DS9), aiming to clarify the molecular mechanism of the mulberry drought stress response. Through transcriptome and proteome sequencing, we identified 9889 DEGs and 1893 DEPs enriched in stress-responsive GO functional categories, such as signal transducer activity, antioxidant activity, and transcription regulator activity. KEGG enrichment analysis showed that a large number of codifferentially expressed genes were enriched in flavonoid biosynthesis pathways, hormone signalling pathways, lignin metabolism and other pathways. Through subsequent cooperation analysis, we identified 818 codifferentially expressed genes in the CK vs. DS9 comparison group, including peroxidase (POD), superoxide dismutase (SOD), aldehyde dehydrogenase (ALDHs), glutathione s-transferase (GST) and other genes closely related to the stress response. In addition, we determined that the mulberry gene MaWRKYIII8 (XP_010104968.1) underwent drought- and abscisic acid (ABA)-induced expression, indicating that it may play an important role in the mulberry response to drought stress. CONCLUSIONS Our research shows that mulberry can activate proline and ABA biosynthesis pathways and produce a large amount of proline and ABA, which improves the drought resistance of mulberry. MaWRKYIII8 was up-regulated and induced by drought and exogenous ABA, indicating that MaWRKYIII8 may be involved in the mulberry response to drought stress. These studies will help us to analyse the molecular mechanism underlying mulberry drought tolerance and provide important gene information and a theoretical basis for improving mulberry drought tolerance through molecular breeding in the future.
Collapse
Affiliation(s)
- Ruixue Li
- Sericultural Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China
| | - Xueqiang Su
- Sericultural Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China
| | - Rong Zhou
- Sericultural Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China
| | - Yuping Zhang
- Sericultural Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China
| | - Taichu Wang
- Sericultural Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China.
| |
Collapse
|
12
|
Tian W, Cheng D, Yan X, Zhang G, Zeng G, Bao X, Zeng Z, Yu P, Gong D. Effect of in vitro digestion of Cudrania cochinchinensis root extracts on phenolic compounds, bioactivity, bioaccessibility and cytotoxicity on HepG2 cells. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03849-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
13
|
Parida IS, Takasu S, Nakagawa K. A comprehensive review on the production, pharmacokinetics and health benefits of mulberry leaf iminosugars: Main focus on 1-deoxynojirimycin, d-fagomine, and 2-O-ɑ-d-galactopyranosyl-DNJ. Crit Rev Food Sci Nutr 2021:1-29. [PMID: 34658276 DOI: 10.1080/10408398.2021.1989660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Mulberry leaves are rich in biologically active compounds, including phenolics, polysaccharides, and alkaloids. Mulberry leaf iminosugars (MLIs; a type of polyhydroxylated alkaloids), in particular, have been gaining increasing attention due to their health-promoting effects, including anti-diabetic, anti-obesity, anti-hyperglycemic, anti-hypercholesterolemic, anti-inflammatory, and gut microbiota-modulatory activities. Knowledge regarding the in vivo bioavailability and bioactivity of MLIs are crucial to understand their role and function and human health. Therefore, this review is aimed to comprehensively summarize the existing studies on the oral pharmacokinetics and the physiological significance of selected MLIs (i.e.,1-deoxynojirimycin, d-fagomine, and 2-O-ɑ-d-galactopyranosyl-DNJ). Evidence have suggested that MLIs possess relatively good uptake and safety profiles, which support their prospective use for oral intake; the therapeutic potential of these compounds against metabolic and chronic disorders and the underlying mechanisms behind these effects have also been studied in in vitro and in vivo models. Also discussed are the biosynthetic pathways of MLIs in plants, as well as the agronomic and processing factors that affect their concentration in mulberry leaves-derived products.
Collapse
Affiliation(s)
| | - Soo Takasu
- Laboratory of Pharmaceutical Analytical Chemistry, Gifu Pharmaceutical University, Gifu, Japan
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory, Tohoku University, Sendai, Japan
| |
Collapse
|
14
|
Yang J, Li H, Wang X, Zhang C, Feng G, Peng X. Inhibition Mechanism of α-Amylase/α-Glucosidase by Silibinin, Its Synergism with Acarbose, and the Effect of Milk Proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10515-10526. [PMID: 34463509 DOI: 10.1021/acs.jafc.1c01765] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a natural flavonolignan, silibinin is reported to possess multiple biological activities, while the inhibitory potential of silibinin on carbohydrate-hydrolyzing enzymes is still unclear. Therefore, in this study, the inhibitory effect and underlying mechanism of silibinin against α-amylase/α-glucosidase were investigated. The results indicated that silibinin showed a strong inhibitory efficiency against α-amylase/α-glucosidase in noncompetitive manners and exhibited synergistic inhibition against α-glucosidase with acarbose. However, interestingly, the inhibitory effect of silibinin was significantly hindered in various milk protein-rich environments, but this phenomenon disappeared after simulated gastrointestinal digestion of milk proteins in vitro. Furthermore, silibinin could combine with the inactive site of α-amylase/α-glucosidase and change the microenvironment and secondary structure of the enzymes, thereby influencing the catalytic efficiency of enzymes. This research suggested that silibinin could be used as a novel carbohydrate-hydrolyzing enzyme inhibitor, and milk beverages rich in silibinin had the potential for further application in antidiabetic dietary or medicine.
Collapse
Affiliation(s)
- Jichen Yang
- School of Life Sciences, Tianjin University, Tianjin 300072, People's Republic of China
| | - Huan Li
- School of Life Sciences, Tianjin University, Tianjin 300072, People's Republic of China
| | - Xiaoli Wang
- School of Life Sciences, Tianjin University, Tianjin 300072, People's Republic of China
| | - Chuanying Zhang
- School of Life Sciences, Tianjin University, Tianjin 300072, People's Republic of China
| | - Guo Feng
- School of Life Sciences, Tianjin University, Tianjin 300072, People's Republic of China
| | - Xin Peng
- School of Life Sciences, Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, Tianjin University, Tianjin 300072, People's Republic of China
- Key Laboratory of Tropical Medicinal Resources Chemistry of Ministry of Education, Hainan Normal University, Haikou, Hainan 571158, People's Republic of China
| |
Collapse
|
15
|
Cui Y, Lu H, Tian Z, Deng D, Ma X. Current trends of Chinese herbal medicines on meat quality of pigs. A review. JOURNAL OF ANIMAL AND FEED SCIENCES 2021. [DOI: 10.22358/jafs/138775/2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
16
|
Wongon M, Limpeanchob N. Artocarpus lacucha Extract and Oxyresveratrol Inhibit Glucose Transporters in Human Intestinal Caco-2 Cells. PLANTA MEDICA 2021; 87:709-715. [PMID: 33511623 DOI: 10.1055/a-1324-3570] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Reduction of intestinal glucose absorption might result from either delayed carbohydrate digestion or blockage of glucose transporters. Previously, oxyresveratrol was shown to inhibit α-glucosidase, but its effect on glucose transporters has not been explored. The present study aimed to assess oxyresveratrol-induced inhibition of the facilitative glucose transporter 2 and the active sodium-dependent glucose transporter 1. An aqueous extract of Artocarpus lacucha, Puag Haad, which is oxyresveratrol-enriched, was also investigated. Glucose transport was measured by uptake into Caco-2 cells through either glucose transporter 2 or sodium-dependent glucose transporter 1 according to the culture conditions. Oxyresveratrol (40 to 800 µM) dose-dependently reduced glucose transport, which appeared to inhibit both glucose transporter 2 and sodium-dependent glucose transporter 1. Puag Haad at similar concentrations also inhibited these transporters but with greater efficacy. Oxyresveratrol and Puag Haad could help reduce postprandial hyperglycemic peaks, which are considered to be most damaging in diabetics.
Collapse
Affiliation(s)
- Matusorn Wongon
- Department of Pharmacy Practice and Center of Excellence for Innovation in Chemistry, Pharmacological Research Unit, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Nanteetip Limpeanchob
- Department of Pharmacy Practice and Center of Excellence for Innovation in Chemistry, Pharmacological Research Unit, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| |
Collapse
|
17
|
Magnetic particles for enzyme immobilization: A versatile support for ligand screening. J Pharm Biomed Anal 2021; 204:114286. [PMID: 34358814 DOI: 10.1016/j.jpba.2021.114286] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/20/2021] [Accepted: 07/25/2021] [Indexed: 12/12/2022]
Abstract
Enzyme inhibitors represent a substantial fraction of all small molecules currently in clinical use. Therefore, the early stage of drug-discovery process and development efforts are focused on the identification of new enzyme inhibitors through screening assays. The use of immobilized enzymes on solid supports to probe ligand-enzyme interactions have been employed with success not only to identify and characterize but also to isolate new ligands from complex mixtures. Between the available solid supports, magnetic particles have emerged as a promising support for enzyme immobilization due to the high superficial area, easy separation from the reaction medium and versatility. Particularly, the ligand fishing assay has been employed as a very useful tool to rapidly isolate bioactive compounds from complex mixtures, and hence the use of magnetic particles for enzyme immobilization has been widespread. Thus, this review provides a critical overview of the screening assays using immobilized enzymes on magnetic particles between 2006 and 2021.
Collapse
|
18
|
Inhibitory Activity and Mechanism Investigation of Hypericin as a Novel α-Glucosidase Inhibitor. Molecules 2021; 26:molecules26154566. [PMID: 34361714 PMCID: PMC8348433 DOI: 10.3390/molecules26154566] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/20/2021] [Accepted: 07/24/2021] [Indexed: 12/15/2022] Open
Abstract
α-glucosidase is a major enzyme that is involved in starch digestion and type 2 diabetes mellitus. In this study, the inhibition of hypericin by α-glucosidase and its mechanism were firstly investigated using enzyme kinetics analysis, real-time interaction analysis between hypericin and α-glucosidase by surface plasmon resonance (SPR), and molecular docking simulation. The results showed that hypericin was a high potential reversible and competitive α-glucosidase inhibitor, with a maximum half inhibitory concentration (IC50) of 4.66 ± 0.27 mg/L. The binding affinities of hypericin with α-glucosidase were assessed using an SPR detection system, which indicated that these were strong and fast, with balances dissociation constant (KD) values of 6.56 × 10−5 M and exhibited a slow dissociation reaction. Analysis by molecular docking further revealed that hydrophobic forces are generated by interactions between hypericin and amino acid residues Arg-315 and Tyr-316. In addition, hydrogen bonding occurred between hypericin and α-glucosidase amino acid residues Lys-156, Ser-157, Gly-160, Ser-240, His-280, Asp-242, and Asp-307. The structure and micro-environment of α-glucosidase enzymes were altered, which led to a decrease in α-glucosidase activity. This research identified that hypericin, an anthracene ketone compound, could be a novel α-glucosidase inhibitor and further applied to the development of potential anti-diabetic drugs.
Collapse
|
19
|
Likhitwitayawuid K. Oxyresveratrol: Sources, Productions, Biological Activities, Pharmacokinetics, and Delivery Systems. Molecules 2021; 26:4212. [PMID: 34299485 PMCID: PMC8307110 DOI: 10.3390/molecules26144212] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
Oxyresveratrol has recently attracted much research attention due to its simple chemical structure and diverse therapeutic potentials. Previous reviews describe the chemistry and biological activities of this phytoalexin, but additional coverage and greater accessibility are still needed. The current review provides a more comprehensive summary, covering research from 1955 to the present year. Oxyresveratrol occurs in both gymnosperms and angiosperms. However, it has never been reported in plants in the subclass Sympetalae, and this point might be of both chemotaxonomic and biosynthetic importance. Oxyresveratrol can be easily obtained from plant materials by conventional methods, and several systems for both qualitative and quantitative analysis of oxyresveratrol contents in plant materials and plant products are available. Oxyresveratrol possesses diverse biological and pharmacological activities such as the inhibition of tyrosinase and melanogenesis, antioxidant and anti-inflammatory activities, and protective effects against neurological disorders and digestive ailments. However, the unfavorable pharmacokinetic properties of oxyresveratrol, including low water solubility and poor oral availability and stability, have posed challenges to its development as a useful therapeutic agent. Recently, several delivery systems have emerged, with promising outcomes that may improve chances for the clinical study of oxyresveratrol.
Collapse
Affiliation(s)
- Kittisak Likhitwitayawuid
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| |
Collapse
|
20
|
Cao Q, Teng J, Wei B, Huang L, Xia N. Phenolic compounds, bioactivity, and bioaccessibility of ethanol extracts from passion fruit peel based on simulated gastrointestinal digestion. Food Chem 2021; 356:129682. [PMID: 33812196 DOI: 10.1016/j.foodchem.2021.129682] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 03/04/2021] [Accepted: 03/19/2021] [Indexed: 11/28/2022]
Abstract
Passion fruit peel, a potential source of bioactive compounds, has been used as food stabilizing agent. However, the phenolic composition and bioactivity of passion fruit peel have rarely been reported. The effects of simulated gastrointestinal digestion on the bioactive components, bioactivity and bioaccessibility of passion fruit peel ethanol extracts (PFPE) were investigated using high performance liquid chromatography-tandem mass spectrometry analysis (quasi-targeted metabolomics). Phenols (178) were identified, of which 25 inhibited alpha-glucosidase activity. The stabilities of PFPE phenols were significantly affected by pH changes and digestive enzymes during simulated digestion. The 1,1-diphenyl-2-picrylhydrazyl free radical scavenging capacity and ferric ion reducing antioxidant power were decreased by 32% and 30%, respectively, while 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) free radical scavenging capacity increased by 17%. Alpha-glucosidase inhibition decreased with decreased PFPE phenolic content. Therefore, passion fruit peel could be considered a source of natural antioxidants and alpha-glucosidase inhibitors.
Collapse
Affiliation(s)
- Qiqi Cao
- Department of Food Science and Engineering, Faculty of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi 530000, China
| | - Jianwen Teng
- Department of Food Science and Engineering, Faculty of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi 530000, China.
| | - Baoyao Wei
- Department of Food Science and Engineering, Faculty of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi 530000, China
| | - Li Huang
- Department of Food Science and Engineering, Faculty of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi 530000, China
| | - Ning Xia
- Department of Food Science and Engineering, Faculty of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi 530000, China
| |
Collapse
|
21
|
Li Y, Zhang X, Wang R, Han L, Huang W, Shi H, Wang B, Li Z, Zou S. Altering the inhibitory kinetics and molecular conformation of maltase by Tangzhiqing (TZQ), a natural α-glucosidase inhibitor. BMC Complement Med Ther 2020; 20:350. [PMID: 33208112 PMCID: PMC7672964 DOI: 10.1186/s12906-020-03156-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 11/10/2020] [Indexed: 11/10/2022] Open
Abstract
Background Tangzhiqing (TZQ), as a potential α-glycosidase inhibitor, possesses postprandial hypoglycaemic effects on maltose in humans. The aim of this study was to investigate the mechanisms by which TZQ attenuates postprandial glucose by interrupting the activity of maltase, including inhibitory kinetics and circular dichroism studies. Methods In this study, we determined the inhibitory effect of TZQ on maltase by kinetic analysis to determine the IC50 value and enzyme velocity studies and line weaver-burk plot generation to determine inhibition type. Acarbose was chosen as a standard control drug. After the interaction with TZQ and maltase, secondary structure analysis was conducted with a circular dichroism method. Results TZQ showed notable inhibition activity on maltase in a reversible and competitive manner with an IC50 value of 1.67 ± 0.09 μg/ml, which was weaker than that of acarbose (IC50 = 0.29 ± 0.01 μg/ml). The circular dichroism spectrum demonstrated that the binding of TZQ to maltase changed the conformation of maltase and varied with the concentration of TZQ in terms of the disappearance of β-sheets and an increase in the α-helix content of the enzyme, similar to acarbose. Conclusions This work provides useful information for the inhibitory effect of TZQ on maltase. TZQ has the potential to be an α-glycosidase inhibitor for the prevention and treatment of prediabetes or mild diabetes mellitus.
Collapse
Affiliation(s)
- Yanfen Li
- Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, No.69 Zengchan Road, Hebei District, Tianjin, 300250, China
| | - Xiaomao Zhang
- School of Chemical Engineering and Technology, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin, 300350, China
| | - Ruihua Wang
- Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, No.69 Zengchan Road, Hebei District, Tianjin, 300250, China
| | - Lu Han
- Tianjin University of Traditional Chinese Medicine, No. 10 Poyanghu Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, China
| | - Wei Huang
- Tianjin University of Traditional Chinese Medicine, No. 10 Poyanghu Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, China
| | - Hong Shi
- Tianjin University of Traditional Chinese Medicine, No. 10 Poyanghu Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, China
| | - Baohe Wang
- Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, No.69 Zengchan Road, Hebei District, Tianjin, 300250, China
| | - Ziqiang Li
- Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, No.69 Zengchan Road, Hebei District, Tianjin, 300250, China.
| | - Shaolan Zou
- School of Chemical Engineering and Technology, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin, 300350, China.
| |
Collapse
|
22
|
Xie F, Gong S, Zhang W, Wang Z. Kinetics and Molecular Docking Studies of Activating Effect of
Canna edulis
Ker Residue Lignin on the Activity of Lipase. STARCH-STARKE 2020. [DOI: 10.1002/star.202000154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fan Xie
- Shanghai Engineering Research Center of Food Microbiology School of Medical Instrument and Food Engineering University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Shengxiang Gong
- Department of Food Science and Technology School of Agriculture and Biology Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Wei Zhang
- Department of Food Science and Technology School of Agriculture and Biology Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zhengwu Wang
- Department of Food Science and Technology School of Agriculture and Biology Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| |
Collapse
|
23
|
Wu X, Qiu B, Chen Y, Shi Y, Zhu J, Liu X, Zhao D. Online coupling Fe3O4@ZIF-67@α-glucosidase biomicroreactor with high performance liquid chromatography for rapid screening of α-glucosidase inhibitors in tea and their inhibitory activity research. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122398. [DOI: 10.1016/j.jchromb.2020.122398] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022]
|
24
|
Chen Z, Xie Y, Luo J, Chen T, Xi Q, Zhang Y, Sun J. Dietary supplementation with Moringa oleifera and mulberry leaf affects pork quality from finishing pigs. J Anim Physiol Anim Nutr (Berl) 2020; 105:72-79. [PMID: 33021002 DOI: 10.1111/jpn.13450] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 08/22/2020] [Accepted: 08/23/2020] [Indexed: 01/08/2023]
Abstract
Moringa oleifera and Morus alba leaves are nutritious non-traditional feed ingredients containing bioactive substances. This study was to evaluate the potential application of dietary Moringa and Morus leaf powder on the growth traits, carcass characteristics and meat quality of finishing pigs. Moringa did not alter growth performance or carcass characteristics, but it decreased meat b* value, increased MyHCIIa and decreased MyHCIIx mRNA levels, and increased CP and concentrations of Ala, Thr, Ile, Lys and Pro in longissimus thoracis. Morus increased final BW, ADFI and ADG, decreased F/G ratio, improved slaughter weight, carcass weight, carcass yield and meat a* value, and decreased shear force, drip loss, MyHCIIx and MyHCIIb mRNA levels, and increased MyHCI and MyHCIIa mRNA levels. Morus also increased CP, Glu, Gly, Ala, Arg, Ile, Phe, Pro, Ser, Tyr and Asp, and C16:1, C18:1n9c, C20:4n6, C18:3n3, C20:3n3, C22:1n9 and n-3 PUFA, but decreased C12:0 and C16:0. In summary, Morus improved the parameters and held great potential as an unconventional feed crop.
Collapse
Affiliation(s)
- Zujing Chen
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Yueqin Xie
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Junyi Luo
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Ting Chen
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Qianyun Xi
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Yongliang Zhang
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Jiajie Sun
- College of Animal Science, Guangdong Engineering & Research Center for Woody Fodder Plants, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| |
Collapse
|
25
|
Budiman A, Sofian FF, Santi NMWS, Aulifa DL. The formulation of lozenge using black mulberries ( Morus nigra L.) leaf extract as an α-glucosidase inhibitor. J Pharm Bioallied Sci 2020; 12:171-176. [PMID: 32742116 PMCID: PMC7373108 DOI: 10.4103/jpbs.jpbs_219_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 01/21/2020] [Accepted: 02/09/2020] [Indexed: 01/06/2023] Open
Abstract
Background: Diabetes mellitus is a chronic metabolic disease, which possibly leads to kidney, brain, heart failure, and other organ complications, subsequently harming human health. These symptoms have been prevented using the leaf of black mulberry (BM), as a traditional medicine, because the phenolic compounds contained are able to decrease blood glucose concentration. Meanwhile, previous reports have shown that BM contains 1-deoxynojirimycin, with strong activity as an α-glucosidase inhibitor. The aim of this study, therefore, was to formulate and evaluate BM leaf extract in lozenge dosage form as an α-glucosidase inhibitor. Materials and Methods: The leaves of BM were extracted using the maceration method, where ethanol (70%) served as a solvent, and the inhibitory activity of the sourced α-glucosidase enzyme was determined through in vitro study. Subsequently, the extract was formulated into lozenge dosage form and evaluated for physical stability and also the effect of α-glucosidase enzyme. Results: The result showed an inhibitory activity of BM leaf extract against the enzyme α-glucosidase, with a half maximal inhibitory concentration (IC50) value of 357.6 μg/mL, whereas the lozenge formulation containing 43% of extract as well as 5% polyvinylpyrrolidone showed the best physical stability as compared to other formulas. However, the lozenge inhibits α-glucosidase enzyme with an IC50 value of 549.7 μg/mL. Conclusion: It was established that the lozenge of BM leaf extract possesses activity as an α-glucosidase inhibitor.
Collapse
Affiliation(s)
- Arif Budiman
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
| | - Ferry F Sofian
- Department of Biological Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
| | - Ni Made W S Santi
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Bandung, Indonesia
| | - Diah L Aulifa
- Department of Pharmaceutical Biology, Indonesia School of Pharmacy, Bandung, Indonesia
| |
Collapse
|
26
|
Inhibitory effect of Artocarpus lakoocha Roxb and oxyresveratrol on α-glucosidase and sugar digestion in Caco-2 cells. Heliyon 2020; 6:e03458. [PMID: 32154416 PMCID: PMC7056649 DOI: 10.1016/j.heliyon.2020.e03458] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 12/09/2019] [Accepted: 02/18/2020] [Indexed: 12/13/2022] Open
Abstract
Long-term diabetic complications are exacerbated by post-prandial hyperglycemia which could be ameliorated by α-glucosidase inhibitor including oxyresveratrol. Puag-Haad is an aqueous extract from Artocarpus lakoocha Roxb. containing ~65% oxyresveratrol. Oxyresveratrol is an inhibitor of isolated yeast α-glucosidase enzyme but has not been tested on intact gut enterocytes where the enzyme is membrane-bound. Accordingly, differentiated Caco-2 cells that contain the native enzyme were used to test maltose hydrolysis in the present study. The results demonstrated that purified yeast α-glucosidase was non-competitively inhibited by oxyresveratrol (Ki 54.4 ± 0.7 μg/mL) and Puag-Haad (2.7 ± 0.1 μg/mL) compared to 153.8 ± 4.3 μg/mL acarbose, an anti-diabetic drug. In differentiated Caco-2 cells, both oxyresveratrol and Puag-Haad inhibited maltose hydrolysis with lesser potency compared to acarbose. Thus, although weaker than acarbose, oxyresveratrol and Puag-Haad do not inhibit pancreatic amylase which might be a therapeutic asset in preventing fermentation of unabsorbed carbohydrate causes abdominal bloating, flatulence, or diarrhea. Oxyresveratrol and Puag-Haad may help control postprandial hyperglycemia with low risk of gastrointestinal side effects.
Collapse
|
27
|
Jiang L, Wang Z, Wang X, Wang S, Cao J, Liu Y. Exploring the inhibitory mechanism of piceatannol on α-glucosidase relevant to diabetes mellitus. RSC Adv 2020; 10:4529-4537. [PMID: 35495253 PMCID: PMC9049079 DOI: 10.1039/c9ra09028b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 01/08/2020] [Indexed: 11/25/2022] Open
Abstract
Due to their association with type 2 diabetes mellitus treatment, α-glucosidase inhibitors have attracted increasing attention of researchers. In this study, we systemically investigated the kinetics and inhibition mechanism of piceatannol on α-glucosidase. Enzyme kinetics analyses showed that piceatannol exhibited strong inhibition on α-glucosidase in a non-competitive manner. Spectroscopy analyses indicated that piceatannol could bind with α-glucosidase to form complexes via high affinity. Further, computational molecular dynamics and molecular docking studies validated that the binding of piceatannol was outside the catalytic site of α-glucosidase, which would induce conformational changes of α-glucosidase and block the entrance of substrate, causing declines in α-glucosidase activities. Our results provide useful information not only for the inhibition mechanism of piceatannol against α-glucosidase but also for a novel target site for developing novel α-glucosidase inhibitors as potential therapeutic agents in the treatment of type 2 diabetes mellitus. The non-competitive inhibition of piceatannol on α-glucosidase. A combination of dynamic and static process with one binding site. The involvement of hydrophobic interactions and hydrogen bonding. Dietary recommendations for diabetes or potential antidiabetic drug.![]()
Collapse
Affiliation(s)
- Lili Jiang
- School of Life and Pharmaceutical Sciences
- Dalian University of Technology
- Panjin 124221
- China
| | - Zhen Wang
- School of Life and Pharmaceutical Sciences
- Dalian University of Technology
- Panjin 124221
- China
| | - Xiaoyu Wang
- School of Life and Pharmaceutical Sciences
- Dalian University of Technology
- Panjin 124221
- China
| | - Shujuan Wang
- School of Life and Pharmaceutical Sciences
- Dalian University of Technology
- Panjin 124221
- China
| | - Jun Cao
- Department of Occupational and Environmental Health
- Dalian Medical University
- Dalian 116044
- China
| | - Yong Liu
- School of Life and Pharmaceutical Sciences
- Dalian University of Technology
- Panjin 124221
- China
| |
Collapse
|
28
|
D’Urso G, Mes JJ, Montoro P, Hall RD, de Vos RC. Identification of Bioactive Phytochemicals in Mulberries. Metabolites 2019; 10:metabo10010007. [PMID: 31861822 PMCID: PMC7023076 DOI: 10.3390/metabo10010007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 01/20/2023] Open
Abstract
Mulberries are consumed either freshly or as processed fruits and are traditionally used to tackle several diseases, especially type II diabetes. Here, we investigated the metabolite compositions of ripe fruits of both white (Morus alba) and black (Morus nigra) mulberries, using reversed-phase HPLC coupled to high resolution mass spectrometry (LC-MS), and related these to their in vitro antioxidant and α-glucosidase inhibitory activities. Based on accurate masses, fragmentation data, UV/Vis light absorbance spectra and retention times, 35 metabolites, mainly comprising phenolic compounds and amino sugar acids, were identified. While the antioxidant activity was highest in M. nigra, the α-glucosidase inhibitory activities were similar between species. Both bioactivities were mostly resistant to in vitro gastrointestinal digestion. To identify the bioactive compounds, we combined LC-MS with 96-well-format fractionation followed by testing the individual fractions for α-glucosidase inhibition, while compounds responsible for the antioxidant activity were identified using HPLC with an online antioxidant detection system. We thus determined iminosugars and phenolic compounds in both M. alba and M. nigra, and anthocyanins in M. nigra as being the key α-glucosidase inhibitors, while anthocyanins in M. nigra and both phenylpropanoids and flavonols in M. alba were identified as key antioxidants in their ripe berries.
Collapse
Affiliation(s)
- Gilda D’Urso
- Department of Pharmacy, University of Salerno, 84084 Fisciano SA, Italy; (G.D.); (P.M.)
| | - Jurriaan J. Mes
- Business Unit Fresh Food and Chains, Wageningen Food & Biobased Research, Wageningen University and Research, 6708 WG Wageningen, The Netherlands;
| | - Paola Montoro
- Department of Pharmacy, University of Salerno, 84084 Fisciano SA, Italy; (G.D.); (P.M.)
| | - Robert D. Hall
- Business Unit Bioscience, Wageningen Plant Research, Wageningen University and Research, 6708 PB Wageningen, The Netherlands;
- Laboratory of Plant Physiology, Wageningen University and Research, 6708 PB Wageningen, The Netherlands
| | - Ric C.H. de Vos
- Business Unit Bioscience, Wageningen Plant Research, Wageningen University and Research, 6708 PB Wageningen, The Netherlands;
- Correspondence: ; Tel.: +31-317480841
| |
Collapse
|
29
|
Thilavech T, Adisakwattana S. Cyanidin-3-rutinoside acts as a natural inhibitor of intestinal lipid digestion and absorption. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:242. [PMID: 31488210 PMCID: PMC6727418 DOI: 10.1186/s12906-019-2664-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/30/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Cyanidin-3-rutinoside (C3R), a naturally occurring anthocyanin, possesses anti-oxidant, anti-hyperglycemic, anti-glycation and cardioprotective properties. However, its mechanisms responsible for anti-hyperlipidemic activity have not been fully identified. The aim of the study was to investigate the lipid-lowering mechanisms of C3R through inhibition of lipid digestion and absorption in vitro. METHODS The inhibitory activity of C3R against pancreatic lipase and cholesterol esterase was evaluated using enzymatic fluorometric and enzymatic colorimetric assays, respectively. An enzyme kinetic study using Michaelis-Menten and the derived Lineweaver-Burk plot was performed to understand the possible types of inhibition. The formation of cholesterol micelles was determined using the cholesterol assay kit. The bile acid binding was measured using the colorimetric assay. The NBD cholesterol uptake in Caco-2 cells was determined using fluorometric assay. The mRNA expression of cholesterol transporter (Niemann-Pick C1-like 1) was determined by RT-PCR. RESULTS The results showed that C3R was a mixed-type competitive inhibitor of pancreatic lipase with the IC50 value of 59.4 ± 1.41 μM. Furthermore, C3R (0.125-1 mM) inhibited pancreatic cholesterol esterase about 5-18%. In addition, C3R inhibited the formation of cholesterol micelles and bound to primary and secondary bile acid. In Caco-2 cells, C3R (12.5-100 μM) exhibited a significant reduction in cholesterol uptake in both free cholesterol (17-41%) and mixed micelles (20-30%). Finally, C3R (100 μM) was able to suppress mRNA expression of NPC1L1 in Caco-2 cells after 24 h incubation. CONCLUSIONS The present findings suggest that C3R acts as a lipid-lowering agent through inhibition of lipid digestion and absorption.
Collapse
|
30
|
Kim JH, Kim HY, Jin CH. Mechanistic investigation of anthocyanidin derivatives as α-glucosidase inhibitors. Bioorg Chem 2019; 87:803-809. [DOI: 10.1016/j.bioorg.2019.01.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/07/2019] [Accepted: 01/21/2019] [Indexed: 12/14/2022]
|
31
|
Yimam M, Jiao P, Hong M, Brownell L, Lee YC, Kim HJ, Nam JB, Kim MR, Jia Q. Morus alba, a Medicinal Plant for Appetite Suppression and Weight Loss. J Med Food 2019; 22:741-751. [PMID: 31120370 DOI: 10.1089/jmf.2017.0142] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The prevalence of obesity is expanding rapidly worldwide, making the disease a global burden with limited treatment options. The current obesity drug development trends suggest the possibility of reducing weight and reverse metabolic disturbances of obesity by controlling appetite. In this study, we screened more than 8000 plants from our plant library for the cannabinoid (CB1) receptor antagonists and identified Morus alba as a lead medicinal plant. Kuwanon G and Albanin G were isolated and identified from root-barks of Morus alba with 92% and 96% CB1 receptor ligand binding inhibitory activity, respectively. The bioflavonoid standardized extract was tested in the acute food intake study in rats at oral doses of 250 and 500 mg/kg for its appetite suppression activity. Diet-induced obesity in the C57BL/6J mice was used to evaluate the long-term food intake reduction activity and effect on the weight loss administered orally at 250 and 500 mg/kg for 7 weeks. Statistically significant and dose-dependent reduction in food intake was observed in both acute and long-term studies for the extract. Food intake reductions of 58.6% and 44.8% at 250 mg/kg and 50.1% and 44.3% at 500 mg/kg were observed at 1 and 2 h postfood provision, respectively. A 20% reduction in daily calorie intake was observed in the long-term study. Obese mice treated with the high dose of Morus root-bark extract showed 10.4 g (22.5%) and 7.1 g (16.5%) loss in body weight compared with the vehicle-treated obese animals (at week 7) and baseline, respectively. Statistically significant reductions in biochemical markers and visceral fat deposit were also observed. These results demonstrated that Morus alba extracts enriched in Kuwanon G, and Albanin G could be used alone to control appetite, manage body weight, and improve metabolic syndromes.
Collapse
Affiliation(s)
| | - Ping Jiao
- 1 Unigen, Inc., Seattle, Washington, USA
| | - Mei Hong
- 1 Unigen, Inc., Seattle, Washington, USA
| | | | | | | | | | | | - Qi Jia
- 1 Unigen, Inc., Seattle, Washington, USA
| |
Collapse
|
32
|
Jia YN, Peng YL, Zhao YP, Cheng XF, Zhou Y, Chai CL, Zeng LS, Pan MH, Xu L. Comparison of the Hepatoprotective Effects of the Three Main Stilbenes from Mulberry Twigs. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:5521-5529. [PMID: 31012578 DOI: 10.1021/acs.jafc.8b07245] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The purpose of this study was to compare the hepatoprotective effects of Oxy (oxyresveratrol), Res (resveratrol), and MulA (mulberroside A) (80 mg/kg body weight/d, i.g.) on acute liver injury (ALI) induced by lipopolysaccharide (LPS)/d-galactosamine (d-GalN) in mice. After 7 h of LPS (50 μg/kg body weight, i.p.) and d-GalN (500 mg/kg body weight, i.p.) exposure, the activities of serum transaminases and antioxidant enzymes were determined. The expressions of the Kelch-like ECH-associated protein 1 (Keap1)-nuclear factor erythroid 2-related factor 2 (Nrf2) signal pathway, the nuclear factor-kappa B (NF-κB) signal pathway, and the mitogen-activated protein kinase (MAPK) signal pathway related proteins were evaluated by Western blot assays. Histopathological analysis was performed by hematoxylin-eosin (H&E) staining on the separated livers of mice. The results showed that treatment with Oxy, Res, and MulA could significantly decreases the levels of alanine transaminase (ALT) and aspartate transaminase (AST) ( P < 0.01). MulA was the most effective ingredient among the three, and the ALT and AST levels were reduced at 90.3 ± 1.3% and 93.9 ± 1.1% compared with the LPS/D-GalN treated group ( P < 0.01). Meanwhile, the stilbenes curbed the expression of inflammatory factors, NF-κB pathway activation, and MAPKs phosphorylation and upregulated antioxidant enzymes, Nrf2, NAD (P) H:quinone oxidoreductase (NQO1), and heme oxygenase-1 (HO-1) expression levels. Stilbenes might protect the ALI caused by LPS/d-GalN through inhibiting the negative effectiveness of oxidation stress and inflammation. The protective performance of MulA was better than those of Oxy and Res, and we hypothesize that it might be due to the mediation of the specific metabolic pathway of the MulA in vivo. All of these results implied that stilbenes in mulberry twigs might be promising as natural additives.
Collapse
Affiliation(s)
- Ya-Nan Jia
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
| | - Ya-Lin Peng
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| | - Yi-Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| | - Xi-Fei Cheng
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| | - You Zhou
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| | - Chun-Li Chai
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| | - Ling-Shu Zeng
- Chongqing Sericulture Science and Technology Research Institute , No. 1 Shangba Road, Dongyang Street , Beibei District, Chongqing 400700 , China
| | - Min-Hui Pan
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| | - Li Xu
- State Key Laboratory of Silkworm Genome Biology, College of Biotechnology , Southwest University , Chongqing 400715 , China
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University , Chongqing 400715 , China
| |
Collapse
|
33
|
Investigation on the Enzymatic Profile of Mulberry Alkaloids by Enzymatic Study and Molecular Docking. Molecules 2019; 24:molecules24091776. [PMID: 31071910 PMCID: PMC6539310 DOI: 10.3390/molecules24091776] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/04/2019] [Accepted: 05/05/2019] [Indexed: 12/27/2022] Open
Abstract
α-glucosidase inhibitors (AGIs) have been an important category of oral antidiabetic drugs being widely exploited for the effective management of type 2 diabetes mellitus. However, the marketed AGIs not only inhibited the disaccharidases, but also exhibited an excessive inhibitory effect on α-amylase, resulting in undesirable gastrointestinal side effects. Compared to these agents, Ramulus Mori alkaloids (SZ-A), was a group of effective alkaloids from natural Morus alba L., and showed excellent hypoglycemic effect and fewer side effects in the Phase II/III clinical trials. Thus, this paper aims to investigate the selective inhibitory effect and mechanism of SZ-A and its major active ingredients (1-DNJ, FA and DAB) on different α-glucosidases (α-amylase and disaccharidases) by using a combination of kinetic analysis and molecular docking approaches. From the results, SZ-A displayed a strong inhibitory effect on maltase and sucrase with an IC50 of 0.06 μg/mL and 0.03 μg/mL, respectively, which was similar to the positive control of acarbose with an IC50 of 0.07 μg/mL and 0.68 μg/mL. With regard to α-amylase, SZ-A exhibited no inhibitory activity at 100 μg/mL, while acarbose showed an obvious inhibitory effect with an IC50 of 1.74 μg/mL. The above analysis demonstrated that SZ-A could selectively inhibit disaccharidase to reduce hyperglycemia with a reversible competitive inhibition, which was primarily attributed to the three major active ingredients of SZ-A, especially 1-DNJ molecule. In the light of these findings, molecular docking study was utilized to analyze their inhibition mechanisms at molecular level. It pointed out that acarbose with a four-ring structure could perform desirable interactions with various α-glucosidases, while the three active ingredients of SZ-A, belonging to monocyclic compounds, had a high affinity to the active site of disaccharidases through forming a wide range of hydrogen bonds, whose affinity and consensus score with α-amylase was significantly lower than that of acarbose. Our study illustrates the selective inhibition mechanism of SZ-A on α-glucosidase for the first time, which is of great importance for the treatment of type 2 diabetes mellitus.
Collapse
|
34
|
Wang M, Jiang J, Tian J, Chen S, Ye X, Hu Y, Chen J. Inhibitory mechanism of novel allosteric inhibitor, Chinese bayberry (Myrica rubra Sieb. et Zucc.) leaves proanthocyanidins against α-glucosidase. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
35
|
Preparation and in vitro performance evaluation of resveratrol for oral self-microemulsion. PLoS One 2019; 14:e0214544. [PMID: 30990813 PMCID: PMC6467382 DOI: 10.1371/journal.pone.0214544] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 03/14/2019] [Indexed: 11/19/2022] Open
Abstract
The purpose of this study was to improve the solubility of resveratrol (Res) by a self-microemulsifying drug-delivery system (SMEDDS). Through a solubility experiment, the pseudoternary phase diagram and ternary phase diagram were used to optimize the Res SMEDDS formula. The optimum formulation consisted of 5% IPM, 20% PEG400, and 65% Cremophor RH40. The water solubility, stability, in vitro release and antioxidant activity of the Res SMEDDS were characterized. The Res solubility in the SMEDDS was at least 1,000 times compared to that in water. The average droplet size of the microemulsion was 28.00±1.67 nm and uniform distribution. The Res SMEDDS should be stored at low temperature and in the dark to avoid light conditions. Res SMEDDS was able to improve the in vitro release rate of Res, and the in vitro release of Res from Res SMEDDS was significantly faster that of Res powder and unaffected by pH value of media. Antioxidant assays showed that antioxidant activities of Res in Res SMEDDS were unaffected compared to Res powder. Cytotoxicity study indicated that Res SMEDDS at the concentration of less than 100 μM was safe. These results demonstrated the potential use of Res SMEDDS for oral administration of Res.
Collapse
|
36
|
Sun L, Miao M. Dietary polyphenols modulate starch digestion and glycaemic level: a review. Crit Rev Food Sci Nutr 2019; 60:541-555. [PMID: 30799629 DOI: 10.1080/10408398.2018.1544883] [Citation(s) in RCA: 186] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Polyphenols, as one group of secondary metabolite, are widely distributed in plants and have been reported to show various bioactivities in recent year. Starch digestion not only is related with food industrial applications such as brewing but also plays an important role in postprandial blood glucose level, and therefore insulin resistance. Many studies have shown that dietary phenolic extracts and pure polyphenols can retard starch digestion in vitro, and the retarding effect depends on the phenolic composition and molecular structure. Besides, dietary polyphenols have also been reported to alleviate elevation of blood glucose level after meal, indicating the inhibition of starch digestion in vivo. This review aims to analyze how dietary polyphenols affect starch digestion both in vitro and in vivo. We can conclude that the retarded starch digestion in vitro by polyphenols results from inhibition of key digestive enzymes, including α-amylase and α-glucosidase, as well as from interactions between polyphenols and starch. The alleviation of postprandial hyperglycemia by polyphenols might be caused by both the inhibited starch digestion in vivo and the influenced glucose transport. Therefore, phenolic extracts or pure polyphenols may be alternatives for preventing and treating type II diabetes disease.
Collapse
Affiliation(s)
- Lijun Sun
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, P.R. China
| | - Ming Miao
- State Key Laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu, P.R. China
| |
Collapse
|
37
|
Hu TG, Wen P, Fu HZ, Lin GY, Liao ST, Zou YX. Protective effect of mulberry (Morus atropurpurea) fruit against diphenoxylate-induced constipation in mice through the modulation of gut microbiota. Food Funct 2019; 10:1513-1528. [DOI: 10.1039/c9fo00132h] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The protective effect of mulberry (Morus atropurpurea) fruit against diphenoxylate-induced constipation in mice through the modulation of gut microbiota.
Collapse
Affiliation(s)
- Teng-Gen Hu
- Sericultural & Agri-Food Research Institute
- Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods
- Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing
- China
- School of Food Science and Engineering
| | - Peng Wen
- Sericultural & Agri-Food Research Institute
- Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods
- Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing
- China
- School of Food Science and Engineering
| | - Hui-Zhan Fu
- Sericultural & Agri-Food Research Institute
- Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods
- Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing
- China
| | - Guang-Yue Lin
- Sericultural & Agri-Food Research Institute
- Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods
- Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing
- China
| | - Sen-Tai Liao
- Sericultural & Agri-Food Research Institute
- Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods
- Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing
- China
| | - Yu-Xiao Zou
- Sericultural & Agri-Food Research Institute
- Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods
- Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing
- China
| |
Collapse
|
38
|
|
39
|
López-Angulo G, Montes-Avila J, Sánchez-Ximello L, Díaz-Camacho SP, Miranda-Soto V, López-Valenzuela JA, Delgado-Vargas F. Anthocyanins of Pithecellobium dulce (Roxb.) Benth. Fruit Associated with High Antioxidant and α-Glucosidase Inhibitory Activities. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2018; 73:308-313. [PMID: 30238426 DOI: 10.1007/s11130-018-0693-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Red arils of Pithecellobium dulce fruit, commonly known as guamuchil, show high antioxidant (AOx) and α-glucosidase inhibitory (IαG) activities, which have been mainly associated with the content of unknown anthocyanins. In this study, the AOx (i.e., DPPH and ABTS as Trolox equivalents, μmol TE/g) and IαG (as half-maximal inhibitory concentration, IC50, mg/mL) activities of the anthocyanin-rich fraction (ARF) obtained from red arils were contrasted with those of the methanol extract (ME), and the main ARF anthocyanins were characterized by HPLC-DAD-ESI-MS, GC-MS and 1H-NMR. The AOx and IαG values of the ARF (DPPH = 597.8; ABTS = 884.01; IαG = 0.06) were better than those of the ME (DPPH = 41.5; ABTS = 142.3; IαG = 17.5); remarkably, the ARF IαG value was about 42 times lower than that of acarbose. The main anthocyanins in ARF were pelargonidin 3-O-glucoside and cyanidin 3-O-glucoside. Thus, the consumption of red P. dulce arils could provide health benefits for prevention/treatment of chronic degenerative diseases such as diabetes.
Collapse
Affiliation(s)
- Gabriela López-Angulo
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80010, Culiacan, Sinaloa, Mexico
| | - Julio Montes-Avila
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80010, Culiacan, Sinaloa, Mexico
| | - Leticia Sánchez-Ximello
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80010, Culiacan, Sinaloa, Mexico
| | - Sylvia P Díaz-Camacho
- Unidad de Investigaciones en Ambiente y Salud, Universidad Autónoma de Occidente, Los Mochis, Sinaloa, Mexico
| | - Valentín Miranda-Soto
- Centro de Graduados e Investigación, Instituto Tecnológico de Tijuana, Apartado Postal 1166, C.P, 22000, Tijuana, Baja CA, Mexico
| | - José A López-Valenzuela
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80010, Culiacan, Sinaloa, Mexico
| | - Francisco Delgado-Vargas
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80010, Culiacan, Sinaloa, Mexico.
| |
Collapse
|
40
|
Zhang S, Qiu B, Zhu J, Khan MZH, Liu X. Investigation of the interaction of 2,4-dimethoxy-6,7-dihydroxyphenanthrene with α-glucosidase using inhibition kinetics, CD, FT-IR and molecular docking methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:13-18. [PMID: 29857256 DOI: 10.1016/j.saa.2018.05.077] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/22/2018] [Accepted: 05/24/2018] [Indexed: 06/08/2023]
Abstract
Applying enzyme kinetics, spectroscopic, and molecular docking methods, the interaction properties of 2,4-dimethoxy-6,7-dihydroxyphenanthrene with α-glucosidase were systematically investigated. The α-glucosidase inhibitory activities (IC50 = 0.40 mM) were significantly higher than that of acarbose (as control) and the spectrometric results revealed that 2,4-dimethoxy-6,7-dihydroxyphenanthrene inhibited α-glucosidase in a reversible and noncompetitive manner, which is that the inhibitor bind to the inactive region of α-glucosidase and could be separated from the bind sites. Hydrogen bond was the key interaction force obtained from the results of the molecular docking study, and the binding energy was -27.754 kJ/mol. The CD studies showed that the content of α-helix in α-glucosidase increased from 17.2% to 17.8% with the concentration varying of 2,4-dimethoxy-6,7-dihydroxyphenanthrene. The α-helix increasing trend (19.70% - 21.43%) of α-glucosidase secondary structure was further proved by Fourier transform infrared spectra (FT-IR) results and the FT-IR spectra of α-glucosidase resulted in obvious red shift with the addition of 2,4-dimethoxy-6,7-dihydroxyphenanthrene. All the measurements proved the interaction of 2,4-dimethoxy-6,7-dihydroxyphenanthrene with α-glucosidase and revealed the conformational change of α-glucosidase secondary structure.
Collapse
Affiliation(s)
- Songsong Zhang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China,; Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng 475004, China
| | - Beibei Qiu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China,; Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng 475004, China
| | - Jinhua Zhu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China,; Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng 475004, China.
| | - M Z H Khan
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China,; Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng 475004, China; Dept. of Chemical Engineering, Jessore University of Science and Technology, Jessore 7408, Bangladesh
| | - Xiuhua Liu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China,; Key Laboratory of Natural Medicine and Immune-Engineering of Henan Province, Henan University, Kaifeng 475004, China.
| |
Collapse
|
41
|
Xie F, Wang S, Zhang L, Wu J, Wang Z. Investigating inhibitory activity of novel synthetic sericin peptide on α-D-glucosidase: kinetics and interaction mechanism study using a docking simulation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:1502-1510. [PMID: 28799644 DOI: 10.1002/jsfa.8620] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/22/2017] [Accepted: 08/05/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND We synthesised a novel sericin peptide (SP-GI) with α-d-glucosidase inhibitory activity, which has a sequence of SEDSSEVDIDLGN. The kinetics of its peptide-induced inhibition on α-d-glucosidase activity and its interaction mechanism merging with molecular docking were both investigated. RESULTS SP-GI exhibited significant inhibitory activity with an IC50 of 2.9 ± 0.1 µmol L-1 and this inhibition was reversible and non-competitive with a Ki value of 1.0 ± 0.1 µmol L-1 . An interaction study with SP-GI revealed it bound to α-d-glucosidase at a single binding site, resulting in alterations in α-d-glucosidase secondary structure. This led to quenching of intrinsic α-d-glucosidase fluorescence by a static quenching mechanism. Molecular docking results showed that the SP-GI binding site on α-d-glucosidase differed from acarbose, with hydrogen bonding and van der Waals forces being the main binding drivers. CONCLUSION These findings suggest the potential use for SP-GI or other natural sericin peptides as dietary supplements for the treatment of type 2 diabetes. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Fan Xie
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shaoyun Wang
- Institute of Food Biotechnology and Marine Bioresources, College of Biological Science and Technology, Fuzhou University, Fuzhou, China
| | - Li Zhang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Jinhong Wu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhengwu Wang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
42
|
Khalifa I, Zhu W, Li KK, Li CM. Polyphenols of mulberry fruits as multifaceted compounds: Compositions, metabolism, health benefits, and stability—A structural review. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.10.041] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
43
|
Zhang H, Zhang X, Jiang H, Xu C, Tong S, Yan J. Screening and identification of α-glucosidase inhibitors from Shenqi Jiangtang Granule by ultrafiltration liquid chromatography and mass spectrometry. J Sep Sci 2017; 41:797-805. [DOI: 10.1002/jssc.201700835] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/01/2017] [Accepted: 11/09/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Hui Zhang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou China
| | - Xiaojing Zhang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou China
| | - Huijie Jiang
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou China
| | - Cong Xu
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou China
| | - Shengqiang Tong
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou China
| | - Jizhong Yan
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou China
| |
Collapse
|
44
|
A strategy for screening of α-glucosidase inhibitors from Morus alba root bark based on the ligand fishing combined with high-performance liquid chromatography mass spectrometer and molecular docking. Talanta 2017; 180:337-345. [PMID: 29332820 DOI: 10.1016/j.talanta.2017.12.065] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/14/2017] [Accepted: 12/21/2017] [Indexed: 11/23/2022]
Abstract
A new method based on ligand fishing combined with high-performance liquid chromatography quadrupole-time-of-flight mass spectrometer and molecular docking was established to screen α-glucosidase inhibitors from a traditional Chinese medicine Morus alba root bark. α-Glucosidase was immobilized on magnetic nanoparticles, used as a solid support to incubate with crude extract. After ligand fishing, the eluates were analyzed by high-performance liquid chromatography quadrupole-time-of-flight mass spectrometer, obtaining eleven ligands (1-4, 6-12) eventually. In order to discriminate the non-specific binders and discover powerful enzyme inhibitors, molecular docking was further performed and three of the eleven ligands were optimized to be excellent α-glucosidase inhibitors by the confirmation of isolation and bioassay of individual compounds. These three ligands, sanggenons G (6), O (7) and sanggenol G (12) exhibited striking inhibitory activities with extremely low IC50 values. The results suggest that established method will be applied to a wide range of target protein to screen potential bioactive constituents from herbal medicines.
Collapse
|
45
|
Bai J, Wu Y, Wang X, Liu X, Zhong K, Huang Y, Chen Y, Gao H. In vitro
and
in vivo
characterization of the antibacterial activity and membrane damage mechanism of quinic acid against
Staphylococcus aureus. J Food Saf 2017. [DOI: 10.1111/jfs.12416] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jinrong Bai
- Department of Food Science and Technology, College of Light Industry, Textile and Food EngineeringSichuan UniversityChengdu China
| | - Yanping Wu
- Department of Food Science and Technology, College of Light Industry, Textile and Food EngineeringSichuan UniversityChengdu China
| | - Xiaoyan Wang
- Department of Food Science and Technology, College of Light Industry, Textile and Food EngineeringSichuan UniversityChengdu China
| | - Xiaoyan Liu
- Department of Food Science and Technology, College of Light Industry, Textile and Food EngineeringSichuan UniversityChengdu China
| | - Kai Zhong
- Department of Food Science and Technology, College of Light Industry, Textile and Food EngineeringSichuan UniversityChengdu China
| | - Yina Huang
- Department of Public HealthWest China Medical School, Sichuan UniversityChengdu China
| | - Yiting Chen
- International Department of Shude High SchoolChengdu China
| | - Hong Gao
- Department of Food Science and Technology, College of Light Industry, Textile and Food EngineeringSichuan UniversityChengdu China
| |
Collapse
|
46
|
Chatsumpun N, Sritularak B, Likhitwitayawuid K. New Biflavonoids with α-Glucosidase and Pancreatic Lipase Inhibitory Activities from Boesenbergia rotunda. Molecules 2017; 22:molecules22111862. [PMID: 29084164 PMCID: PMC6150212 DOI: 10.3390/molecules22111862] [Citation(s) in RCA: 18] [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: 10/17/2017] [Revised: 10/25/2017] [Accepted: 10/25/2017] [Indexed: 12/12/2022] Open
Abstract
Roots of Boesenbergia rotunda (L.) Mansf. are prominent ingredients in the cuisine of several Asian countries, including Thailand, Malaysia, Indonesia, India, and China. An extract prepared from the roots of this plant showed strong inhibitory activity against enzymes α-glucosidase and pancreatic lipase and was subjected to chromatographic separation to identify the active components. Three new biflavonoids of the flavanone-chalcone type (9, 12, and 13) were isolated, along with 12 known compounds. Among the 15 isolates, the three new compounds showed stronger inhibitory activity against α-glucosidase than the drug acarbose but displayed lower pancreatic lipase inhibitory effect than the drug orlistat. The results indicated the potential of B. rotunda roots as a functional food for controlling after-meal blood glucose levels.
Collapse
Affiliation(s)
- Nutputsorn Chatsumpun
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Boonchoo Sritularak
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Kittisak Likhitwitayawuid
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
| |
Collapse
|
47
|
Lindbäck E, Lopéz Ó, Tobiesen Å, Fernández-Bolaños JG, Sydnes MO. Sugar hydrazide imides: a new family of glycosidase inhibitors. Org Biomol Chem 2017; 15:8709-8712. [PMID: 29039854 DOI: 10.1039/c7ob01673e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The preparation of a novel type of iminosugar including a hydrazide imide moiety is described. The sugar hydrazide imides (3S,4S,5R,6R)-1-amino-3,4,5-trihydroxy-6-(hydroxymethyl)-2-iminopiperidine acetate and (3S,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)-2-imino-1-(methylamino)piperidine acetate presented here behave as inhibitors of α/β-glucosidases in the low micromolar concentration range. The former inhibitor displays a pH-dependent inhibition of β-glucosidase. The N-methylated counterpart behaves as an anomer-selective competitive micromolar inhibitor of α-glucosidase.
Collapse
Affiliation(s)
- Emil Lindbäck
- Faculty of Science and Technology, Department of Mathematics and Natural Science, University of Stavanger, NO-4036 Stavanger, Norway.
| | | | | | | | | |
Collapse
|
48
|
Wei M, Chai WM, Yang Q, Wang R, Peng Y. Novel Insights into the Inhibitory Effect and Mechanism of Proanthocyanidins from Pyracantha fortuneana
Fruit on α-Glucosidase. J Food Sci 2017; 82:2260-2268. [DOI: 10.1111/1750-3841.13816] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 05/05/2017] [Accepted: 06/12/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Mankun Wei
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Life Science; Jiangxi Normal Univ.; Nanchang Jiangxi 330022 China
| | - Wei-Ming Chai
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Life Science; Jiangxi Normal Univ.; Nanchang Jiangxi 330022 China
- Key Laboratory of Green Chemistry; Jiangxi Province Nanchang; Jiangxi 330022 China
| | - Qin Yang
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Life Science; Jiangxi Normal Univ.; Nanchang Jiangxi 330022 China
| | - Rui Wang
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Life Science; Jiangxi Normal Univ.; Nanchang Jiangxi 330022 China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Life Science; Jiangxi Normal Univ.; Nanchang Jiangxi 330022 China
- Key Laboratory of Green Chemistry; Jiangxi Province Nanchang; Jiangxi 330022 China
| |
Collapse
|
49
|
Wang C, Zhi S, Liu C, Xu F, Zhao A, Wang X, Ren Y, Li Z, Yu M. Characterization of Stilbene Synthase Genes in Mulberry (Morus atropurpurea) and Metabolic Engineering for the Production of Resveratrol in Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:1659-1668. [PMID: 28168876 DOI: 10.1021/acs.jafc.6b05212] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Stilbenes have been recognized for their beneficial physiological effects on human health. Stilbene synthase (STS) is the key enzyme of resveratrol biosynthesis and has been studied in numerous plants. Here, four MaSTS genes were isolated and identified in mulberry (Morus atropurpurea Roxb.). The expression levels of MaSTS genes and the accumulation of trans-resveratrol, trans-oxyresveratrol, and trans-mulberroside A were investigated in different plant organs. A novel coexpression system that harbored 4-coumarate:CoA ligase gene (Ma4CL) and MaSTS was established. Stress tests suggested that MaSTS genes participate in responses to salicylic acid, abscisic acid, wounding, and NaCl stresses. Additionally, overexpressed MaSTS in transgenic tobacco elevated the trans-resveratrol level and increased tolerance to drought and salinity stresses. These results revealed the major MaSTS gene, and we evaluated its function in mulberry, laying the foundation for future research on stilbene metabolic pathways in mulberry.
Collapse
Affiliation(s)
- Chuanhong Wang
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Shuang Zhi
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Changying Liu
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Fengxiang Xu
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Aichun Zhao
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Xiling Wang
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Yanhong Ren
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| | - Zhengang Li
- The Sericultural and Apicultural Research Institute, Yunnan Academy of Agricultural Sciences , Mengzi, Yunnan 661100, China
| | - Maode Yu
- College of Biotechnology, Southwest University , No. 2 Tiansheng Road, BeiBei District, Chongqing 400716, China
| |
Collapse
|
50
|
Wei M, Chai WM, Wang R, Yang Q, Deng Z, Peng Y. Quinazolinone derivatives: Synthesis and comparison of inhibitory mechanisms on α-glucosidase. Bioorg Med Chem 2017; 25:1303-1308. [DOI: 10.1016/j.bmc.2016.09.042] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/15/2016] [Accepted: 09/16/2016] [Indexed: 12/21/2022]
|