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Duan Y, Li H, Huang S, Li Y, Chen S, Xie L. Phloretin inhibits transmissible gastroenteritis virus proliferation via multiple mechanisms. J Gen Virol 2024; 105. [PMID: 38814698 DOI: 10.1099/jgv.0.001996] [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: 05/31/2024] Open
Abstract
Transmissible gastroenteritis virus (TGEV), an enteropathogenic coronavirus, has caused huge economic losses to the pig industry, with 100% mortality in piglets aged 2 weeks and intestinal injury in pigs of other ages. However, there is still a shortage of safe and effective anti-TGEV drugs in clinics. In this study, phloretin, a naturally occurring dihydrochalcone glycoside, was identified as a potent antagonist of TGEV. Specifically, we found phloretin effectively inhibited TGEV proliferation in PK-15 cells, dose-dependently reducing the expression of TGEV N protein, mRNA, and virus titer. The anti-TGEV activity of phloretin was furthermore refined to target the internalization and replication stages. Moreover, we also found that phloretin could decrease the expression levels of proinflammatory cytokines induced by TGEV infection. In addition, we expanded the potential key targets associated with the anti-TGEV effect of phloretin to AR, CDK2, INS, ESR1, ESR2, EGFR, PGR, PPARG, PRKACA, and MAPK14 with the help of network pharmacology and molecular docking techniques. Furthermore, resistant viruses have been selected by culturing TGEV with increasing concentrations of phloretin. Resistance mutations were reproducibly mapped to the residue (S242) of main protease (Mpro). Molecular docking analysis showed that the mutation (S242F) significantly disrupted phloretin binding to Mpro, suggesting Mpro might be a potent target of phloretin. In summary, our findings indicate that phloretin is a promising drug candidate for combating TGEV, which may be helpful for developing pharmacotherapies for TGEV and other coronavirus infections.
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Affiliation(s)
- Yuting Duan
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, PR China
- Hubei Key Laboratory of Renal Disease Occurrence and Intervention, Medical School, Hubei Polytechnic University, Huangshi, PR China
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Haichuan Li
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Shuai Huang
- Center of Applied Biotechnology, Wuhan Institute of Bioengineering, Wuhan, PR China
| | - Yaoming Li
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Shuyi Chen
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Lilan Xie
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, PR China
- Hubei Key Laboratory of Renal Disease Occurrence and Intervention, Medical School, Hubei Polytechnic University, Huangshi, PR China
- Center of Applied Biotechnology, Wuhan Institute of Bioengineering, Wuhan, PR China
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He JH, Li XJ, Wang SP, Guo X, Chu HX, Xu HC, Wang YS. Eugenol Inhibits Ox-LDL-Induced Proliferation and Migration of Human Vascular Smooth Muscle Cells by Inhibiting the Ang II/MFG-E8/MCP-1 Signaling Cascade. J Inflamm Res 2024; 17:641-653. [PMID: 38328560 PMCID: PMC10847669 DOI: 10.2147/jir.s446960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/20/2024] [Indexed: 02/09/2024] Open
Abstract
Objective In this study, we investigated the effect and mechanism of action of eugenol on oxidized low-density lipoprotein (ox-LDL)-induced abnormal proliferation and migration of human vascular smooth muscle cells (HVSMCs). Methods HVSMCs were treated with 100 ug/mL ox-LDL for 24 hours to establish a cell model. After 1-hour pretreatment, eugenol at concentrations of 5, 25, and 50 uM was added. Cell viability was assessed using an MTT assay, PCNA expression was detected using Western blot, cell cycle distribution was analyzed using flow cytometry, and cell migration ability was evaluated using wound healing and Transwell migration assays. To investigate the mechanisms, Ang II receptors were inhibited by 1000 nM valsartan, MFG-E8 was knocked down by shRNA, MCP-1 was inhibited by siRNA, and MFG-E8 was overexpressed using plasmids. Results The findings from this study elucidated the stimulatory impact of ox-LDL on the proliferation and functionality of HVSMCs. Different concentrations of eugenol effectively mitigated the enhanced activity of HVSMCs induced by ox-LDL, with 50 uM eugenol exhibiting the most pronounced inhibitory effect. Flow cytometry and Western blot results showed ox-LDL reduced G1 phase cells and increased PCNA expression, while 50 uM eugenol inhibited ox-LDL-induced HVSMC proliferation. In wound healing and Transwell migration experiments, the ox-LDL group showed larger cell scratch filling and migration than the control group, both of which were inhibited by 50 uM eugenol. Inhibiting the Ang II/MFG-E8/MCP-1 signaling cascade mimicked eugenol's effects, while MFG-E8 overexpression reversed eugenol's inhibitory effect. Conclusion Eugenol can inhibit the proliferation and migration of ox-LDL-induced HVSMCs by inhibiting Ang II/MFG-E8/MCP-1 signaling cascade, making it a potential therapeutic drug for atherosclerosis.
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Affiliation(s)
- Jia-Huan He
- Department of Cardiology, The First Hospital of Jilin University, Changchun, 13000, People’s Republic of China
| | - Xiang-Jun Li
- Department of Experimental Pharmacology and Toxicology, College of Pharmacy, Jilin University, Changchun, 130000, People’s Republic of China
| | - Shi-Peng Wang
- Department of Cardiology, The First Hospital of Jilin University, Changchun, 13000, People’s Republic of China
| | - Xia Guo
- Department of Cardiology, The First Hospital of Jilin University, Changchun, 13000, People’s Republic of China
| | - Hao-Xuan Chu
- Department of Cardiology, The First Hospital of Jilin University, Changchun, 13000, People’s Republic of China
| | - Han-Chi Xu
- Department of Cardiology, The First Hospital of Jilin University, Changchun, 13000, People’s Republic of China
| | - Yu-Shi Wang
- Department of Cardiology, The First Hospital of Jilin University, Changchun, 13000, People’s Republic of China
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Chilukoti SR, Sahu C, Jena G. Protective role of eugenol against diabetes-induced oxidative stress, DNA damage, and apoptosis in rat testes. J Biochem Mol Toxicol 2024; 38:e23593. [PMID: 38047382 DOI: 10.1002/jbt.23593] [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: 08/02/2023] [Revised: 10/31/2023] [Accepted: 11/20/2023] [Indexed: 12/05/2023]
Abstract
Diabetes mellitus, a metabolic disorder alters gonadal development and spermatogenesis, reactive oxygen species production, DNA damage, and apoptosis, which subsequently lead to male subfertility. Eugenol is an antioxidant, traditionally used as medication for digestive disorders and antioxidant therapy, decrease transport of glucose from GIT to systemic circulation. This experiment was aimed to decipher cellular and molecular insights of eugenol in protecting diabetic germ cells in rats. Rats were assigned randomly into five groups: control, eugenol control (Eugenol 400; EUG), diabetic (DIA), diabetic + eugenol 100 (DIA + EUG 100), and diabetic + eugenol 400 (DIA + EUG 400). EUG 400 and DIA + EUG 400 groups received 400 mg/kg eugenol orally. DIA + EUG 100 group received 100 mg/kg eugenol. Treatment was conducted for 4 weeks. Type 1 diabetes was induced by injecting a single i.p. dose of streptozotocin (55 mg/kg). Morphometric, biochemical, sperm parameters, oxidative stress, hormonal levels, histopathology, and fibrosis in the testis and epididymis, were evaluated. DNA damage was evaluated using halo and comet assays; DNA fragmentation and apoptosis using TUNEL assay. Eugenol treatment significantly normalized biochemical parameters, reduced MDA while increased albumin and GSH levels in diabetes. Eugenol significantly increased sperm numbers, motility and attenuated abnormal sperm head morphology in diabetes. Moreover, eugenol significantly reversed diabetes-induced cellular damages, altered spermatogenesis, and collagen deposition in testis and epididymis. It also significantly attenuated diabetes-associated DNA breaks and apoptosis. These findings suggest that 4 weeks treatment with 400 mg/kg of eugenol could be beneficial for diabetic patients to prevent subfertility.
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Affiliation(s)
- Sri R Chilukoti
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S Nagar, Mohali, Punjab, India
| | - Chittaranjan Sahu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S Nagar, Mohali, Punjab, India
| | - Gopabandhu Jena
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S Nagar, Mohali, Punjab, India
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Wang K, Chen D, Yu B, He J, Mao X, Huang Z, Yan H, Wu A, Luo Y, Zheng P, Yu J, Luo J. Eugenol Alleviates TGEV-Induced Intestinal Injury via Suppressing ROS/NLRP3/GSDMD-Dependent Pyroptosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1477-1487. [PMID: 36642968 DOI: 10.1021/acs.jafc.2c05833] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Transmissible gastroenteritis virus (TGEV), a coronavirus, is one of the main causative agents of diarrhea in piglets and significantly impacts the global swine industry. Pyroptosis is involved in the pathogenesis of coronavirus, but its role in TGEV-induced intestinal injury has yet to be fully elucidated. Eugenol, an essential plant oil, plays a vital role in antiviral innate immune responses. We demonstrate the preventive effect of eugenol on TGEV infection. Eugenol alleviates TGEV-induced intestinal epithelial cell pyroptosis and reduces intestinal injury in TGEV-infected piglets. Mechanistically, eugenol reduces the activation of NLRP3 inflammasome, thereby inhibiting TGEV-induced intestinal epithelial cell pyroptosis. In addition, eugenol scavenges TGEV-induced reactive oxygen species (ROS) increase, which in turn prevents TGEV-induced NLRP3 inflammasome activation and pyroptosis. Overall, eugenol protects the intestine by reducing TGEV-induced pyroptosis through inhibition of NLRP3 inflammasome activation, which may be mediated through intracellular ROS levels. These findings propose that eugenol may be an effective strategy to prevent TGEV infection.
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Affiliation(s)
- Kang Wang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Bing Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Jun He
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Xiangbing Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Zhiqing Huang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Hui Yan
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Aimin Wu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Yuheng Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Ping Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Jie Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
| | - Junqiu Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, People's Republic of China
- Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, Sichuan Province 611130, People's Republic of China
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Jiang Y, Feng C, Shi Y, Kou X, Le G. Eugenol improves high-fat diet/streptomycin-induced type 2 diabetes mellitus (T2DM) mice muscle dysfunction by alleviating inflammation and increasing muscle glucose uptake. Front Nutr 2022; 9:1039753. [PMID: 36424928 PMCID: PMC9681568 DOI: 10.3389/fnut.2022.1039753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/03/2022] [Indexed: 08/10/2023] Open
Abstract
Eugenol has been used in dietary interventions for metabolic diseases such as diabetes and obesity. However, the protective effect of eugenol on muscle function in diabetes is unclear. In this study, a high-fat diet (HFD) with a streptozocin (STZ) injection induced type II diabetes mellitus in a mouse model. Oral eugenol lowered blood glucose and insulin resistance of HFD/STZ-treated mice. Eugenol reduced HFD/STZ-induced muscle inflammation and prevented muscle weakness and atrophy. Eugenol administration significantly increased GLUT4 translocation and AMPK phosphorylation in skeletal muscle, thereby enhancing glucose uptake. By silencing the transient receptor potential vanilloid channel 1 (TRPV1) gene in C2C12 myotube cells, eugenol was found to increase intracellular Ca2+ levels through TRPV1, which then activated calmodulin-dependent protein kinase-2 (CaMKK2) and affected AMPK protein phosphorylation. In conclusion, eugenol is a potential nutraceutical for preventing high-glucose-induced muscle impairments, which could be explained by its mediating effects on glucose absorption and inflammatory responses in the muscle.
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Affiliation(s)
- Yuge Jiang
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Chuanxing Feng
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yonghui Shi
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xingran Kou
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Guowei Le
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
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