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Jia X, Mao D, Guo J, Ke J, Zhu Y, Zhao X, Luo Z, Liu X, Tang R, Hou R, Lan H, Zheng Q. Epigallocatechin gallate attenuated high glucose-induced pancreatic beta cell dysfunction by modulating DRP1-mediated mitochondrial apoptosis pathways. Sci Rep 2024; 14:16809. [PMID: 39039202 PMCID: PMC11263710 DOI: 10.1038/s41598-024-67867-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 07/16/2024] [Indexed: 07/24/2024] Open
Abstract
Long-term exposure to hyperglycemic conditions leads to β-cell dysfunction, particularly mitochondrial dysfunction, and inflammatory and oxidative stress responses, which are considered the primary causes of β-cell death and the hallmarks of diabetes. Plant-active ingredients may play a key role in glycemic control. Epigallocatechin gallate (EGCG) is a characteristic catechin derived from tea that possesses anti-diabetic properties. Nonetheless, its underlying mechanisms remain elusive. Herein, the protective role of EGCG on high glucose (33 mM)-induced pancreatic beta cell dysfunction and its possible molecular mechanisms were investigated. Briefly, MIN6 cells were treated with glucose and EGCG (10 µM, 20 µM, and 40 µM) for 48 h. Our results revealed that EGCG dose-dependently restored mitochondrial membrane potential and concomitantly alleviated cell apoptosis. Mechanistically, the expression level of apoptotic protein BAX and Dynamic related protein 1 (DRP1) was significantly downregulated following EGCG treatment, whereas that of the anti-apoptotic protein BCL-2 was significantly upregulated. Taken together, EGCG alleviated high glucose-induced pancreatic beta cell dysfunction by targeting the DRP1-related mitochondrial apoptosis pathway and thus can serve as a nutritional intervention for the preservation of beta cell dysfunction in patients with type 2 diabetes mellitus.
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Affiliation(s)
- Xu Jia
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China
| | - Danting Mao
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Jianwei Guo
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Jiangyu Ke
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Yanlin Zhu
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Xiaoyang Zhao
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Ziren Luo
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Xinghai Liu
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Rui Tang
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Ruihan Hou
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China
| | - Haitao Lan
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China.
| | - Qian Zheng
- Medical Functional Experiment Center, North Sichuan Medical College, Nanchong, 637000, China.
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Rani A, Saini V, Patra P, Prashar T, Pandey RK, Mishra A, Jha HC. Epigallocatechin Gallate: A Multifaceted Molecule for Neurological Disorders and Neurotropic Viral Infections. ACS Chem Neurosci 2023; 14:2968-2980. [PMID: 37590965 DOI: 10.1021/acschemneuro.3c00368] [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] [Indexed: 08/19/2023] Open
Abstract
Epigallocatechin-3-gallate (EGCG), a polyphenolic moiety found in green tea extracts, exhibits pleiotropic bioactivities to combat many diseases including neurological ailments. These neurological diseases include Alzheimer's disease, multiple sclerosis, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis. For instance, in the case of Alzheimer's disease, the formation of a β-sheet in the region of the 10th-21st amino acids was significantly reduced in EGCG-induced oligomeric samples of Aβ40. Its interference induces the formation of Aβ structures with an increase in intercenter-of-mass distances, reduction in interchain/intrachain contacts, reduction in β-sheet propensity, and increase in α-helix. Besides, numerous neurotropic viruses are known to instigate or aggravate neurological ailments. It exerts an effect on the oxidative damage caused in neurodegenerative disorders by acting on GSK3-β, PI3K/Akt, and downstream signaling pathways via caspase-3 and cytochrome-c. EGCG also diminishes these viral-mediated effects, such as EGCG delayed HSV-1 infection by blocking the entry for virions, inhibitory effects on NS3/4A protease or NS5B polymerase of HCV and potent inhibitor of ZIKV NS2B-NS3pro/NS3 serine protease (NS3-SP). It showed a reduction in the neurotoxic properties of HIV-gp120 and Tat in the presence of IFN-γ. EGCG also involves numerous viral-mediated inflammatory cascades, such as JAK/STAT. Nonetheless, it also inhibits the Epstein-Barr virus replication protein (Zta and Rta). Moreover, it also impedes certain viruses (influenza A and B strains) by hijacking the endosomal and lysosomal compartments. Therefore, the current article aims to describe the importance of EGCG in numerous neurological diseases and its inhibitory effect against neurotropic viruses.
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Affiliation(s)
- Annu Rani
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
| | - Vaishali Saini
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
| | - Priyanka Patra
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
| | - Tanish Prashar
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu India
| | - Rajan Kumar Pandey
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, 342030, Jodhpur India
| | - Hem Chandra Jha
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
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Dou X, Yan D, Liu S, Gao N, Ma Z, Shi Z, Dong N, Shan A. Host Defense Peptides in Nutrition and Diseases: A Contributor of Immunology Modulation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3125-3140. [PMID: 36753427 DOI: 10.1021/acs.jafc.2c08522] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Host defense peptides (HDPs) are primary components of the innate immune system with diverse biological functions, such as antibacterial ability and immunomodulatory function. HDPs are produced and released by immune and epithelial cells against microbial invasion, which are widely distributed in humans, animals, plants, and microbes. Notably, there are great differences in endogenous HDP distribution and expression in humans and animals. Moreover, HDP expression could be regulated by exogenous substances, such as nutrients, and different physiological statuses in health and disease. In this review, we systematically assessed the regulation of expression and mechanism of endogenous HDPs from nutrition and disease perspectives, providing a basis to identify the specificity and regularity of HDP expression. Furthermore, the regulation mechanism of HDP expression was summarized systematically, and the differences in the regulation between nutrients and diseases were explored. From this review, we provide novel ideas targeted the immune regulation of HDPs for protecting host health in nutrition and practical and effective new ideas using the immune regulation theory for further research on protecting host health from pathogenic infection and excessive immunity diseases under the global challenge of the antibiotic-abuse-induced series of problems, including food security and microbial resistance.
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Affiliation(s)
- Xiujing Dou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Di Yan
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Siqi Liu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Nan Gao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Ziwen Ma
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Zixuan Shi
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Na Dong
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Anshan Shan
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
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Kawall A, Lewis DSM, Sharma A, Chavada K, Deshmukh R, Rayalam S, Mody V, Taval S. Inhibitory effect of phytochemicals towards SARS-CoV-2 papain like protease (PLpro) proteolytic and deubiquitinase activity. Front Chem 2023; 10:1100460. [PMID: 36712981 PMCID: PMC9878345 DOI: 10.3389/fchem.2022.1100460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/26/2022] [Indexed: 01/14/2023] Open
Abstract
Recent studies have shown that RNA-dependent RNA polymerase (RdRp), 3-chymotrypsin-like protease (3CLpro), and papain-like protease (PLpro) are necessary for SARS-CoV-2 replication. Among these three enzymes, PLpro exhibits both proteolytic and deubiquitinase (DUB) activity and is responsible for disrupting the host's innate immune response against SARS-CoV-2. Because of this unique property of PLpro, we investigated the inhibitory effects of phytochemicals on the SARS-CoV-2 PLpro enzyme. Our data indicates that the phytochemicals such as catechin, epigallocatechin gallate (EGCG), mangiferin, myricetin, rutin, and theaflavin exhibited inhibitory activity with IC50 values of 14.2, 128.4, 95.3, 12.1, and 43.4, and 7.3 μM, respectively, towards PLpro proteolytic activity. However, the IC50 values of quercetin, oleuropein, and γ-mangostin are ambiguous. We observed that EGCG, mangiferin, myricetin, oleuropein, rutin, and theaflavin have also inhibited the DUB activity with IC50 values of 44.7, 104.3, 29.2, 131.5, 61.7, and 13.2 μM, respectively. Mechanistically, the ligand-protein interaction structural modeling suggests that mangiferin, EGCG, theaflavin, and oleuropein shows that these four ligands interact with Glu167, and Tyr268, however mangiferin and oleuropein showed very weak interaction with Glu167 as compared to EGCG, and theaflavin which reflects their low IC50 values for DUB activity. Our data indicate that the phytochemicals mentioned above inhibit the proteolytic and DUB activity of SARS-CoV-2 PLpro, thus preventing viral replication and promoting host innate immune response. However, the therapeutic potential of these phytochemicals needs to be validated by pre-clinical and clinical studies.
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Affiliation(s)
- Anasha Kawall
- Department of Biomedical Sciences, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States
| | - Devin S. M. Lewis
- Division of Research, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States
| | - Avini Sharma
- Department of Biomedical Sciences, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States
| | - Krishna Chavada
- Department of Pharmaceutical Sciences, School of Pharmacy, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States
| | - Rahul Deshmukh
- Rosalind Franklin University of Medicine and Science, North Chicago, IL, United States
| | - Srujana Rayalam
- Department of Pharmaceutical Sciences, School of Pharmacy, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States
| | - Vicky Mody
- Department of Pharmaceutical Sciences, School of Pharmacy, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States,*Correspondence: Shashidharamurthy Taval, ; Vicky Mody,
| | - Shashidharamurthy Taval
- Department of Pharmaceutical Sciences, School of Pharmacy, Philadelphia College of Osteopathic Medicine—Georgia Campus, Suwanee, GA, United States,*Correspondence: Shashidharamurthy Taval, ; Vicky Mody,
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Chen D, Ning Z, Su J, Zheng R, Liu X, Wu H, Zhu B, Li Y. Inhibition of H1N1 by Picochlorum sp. 122 via AKT and p53 signaling pathways. Food Sci Nutr 2022; 11:743-751. [PMID: 36789072 PMCID: PMC9922122 DOI: 10.1002/fsn3.3110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 09/30/2022] [Accepted: 10/09/2022] [Indexed: 11/07/2022] Open
Abstract
Influenza viruses cause a severe threat to global health, which can lead to annual epidemics and cause pandemics occasionally. However, the number of anti-influenza therapeutic agents is very limited. Polysaccharides, extracted from Picochlorum sp. (PPE), seaweed Polysaccharides, have exhibited antiviral activity and were expected to be used for influenza treatment. In our research, the capability of PPE to inhibit H1N1 infection was proved in MDCK cells. PPE could make MDCK cells avoid being infected with H1N1 and inhibited nuclear fragmentation and condensation of chromatin. PPE evidently inhibited the generation of reactive oxygen species in MDCK cells. Mechanism study revealed that PPE prevented MDCK cells from H1N1 infection through induction of apoptosis by stimulating AKT signaling pathway and suppressing p-p53 signaling pathway. In conclusion, PPE turns out to act as a prospective antiviral drug for H1N1 influenza.
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Affiliation(s)
- Danyang Chen
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
| | - Zhihui Ning
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
| | - Jingyao Su
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
| | - Ruilin Zheng
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
| | - Xia Liu
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
| | - Hua‐lian Wu
- South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhouChina
| | - Bing Zhu
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
| | - Yinghua Li
- Center Laboratory, Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhouChina
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Yang J, Liu S. Influenza Virus Entry inhibitors. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1366:123-135. [DOI: 10.1007/978-981-16-8702-0_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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EGCG, a Green Tea Catechin, as a Potential Therapeutic Agent for Symptomatic and Asymptomatic SARS-CoV-2 Infection. Molecules 2021; 26:molecules26051200. [PMID: 33668085 PMCID: PMC7956763 DOI: 10.3390/molecules26051200] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/20/2021] [Accepted: 02/20/2021] [Indexed: 12/26/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has emerged to be the greatest threat to humanity in the modern world and has claimed nearly 2.2 million lives worldwide. The United States alone accounts for more than one fourth of 100 million COVID-19 cases across the globe. Although vaccination against SARS-CoV-2 has begun, its efficacy in preventing a new or repeat COVID-19 infection in immunized individuals is yet to be determined. Calls for repurposing of existing, approved, drugs that target the inflammatory condition in COVID-19 are growing. Our initial gene ontology analysis predicts a similarity between SARS-CoV-2 induced inflammatory and immune dysregulation and the pathophysiology of rheumatoid arthritis. Interestingly, many of the drugs related to rheumatoid arthritis have been found to be lifesaving and contribute to lower COVID-19 morbidity. We also performed in silico investigation of binding of epigallocatechin gallate (EGCG), a well-known catechin, and other catechins on viral proteins and identified papain-like protease protein (PLPro) as a binding partner. Catechins bind to the S1 ubiquitin-binding site of PLPro, which might inhibit its protease function and abrogate SARS-CoV-2 inhibitory function on ubiquitin proteasome system and interferon stimulated gene system. In the realms of addressing inflammation and how to effectively target SARS-CoV-2 mediated respiratory distress syndrome, we review in this article the available knowledge on the strategic placement of EGCG in curbing inflammatory signals and how it may serve as a broad spectrum therapeutic in asymptomatic and symptomatic COVID-19 patients.
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