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Li Q, Ding J, Xia B, Liu K, Zheng K, Wu J, Huang C, Yuan X, You Q. L-theanine alleviates myocardial ischemia/reperfusion injury by suppressing oxidative stress and apoptosis through activation of the JAK2/STAT3 pathway in mice. Mol Med 2024; 30:98. [PMID: 38943069 PMCID: PMC11214244 DOI: 10.1186/s10020-024-00865-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 06/15/2024] [Indexed: 07/01/2024] Open
Abstract
BACKGROUND L-theanine is a unique non-protein amino acid in tea that is widely used as a safe food additive. We investigated the cardioprotective effects and mechanisms of L-theanine in myocardial ischemia-reperfusion injury (MIRI). METHODS The cardioprotective effects and mechanisms of L-theanine and the role of Janus Kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) signaling were investigated in MIRI mice using measures of cardiac function, oxidative stress, and apoptosis. RESULTS Administration of L-theanine (10 mg/kg, once daily) suppressed the MIRI-induced increase in infarct size and serum creatine kinase and lactate dehydrogenase levels, as well as MIRI-induced cardiac apoptosis, as evidenced by an increase in Bcl-2 expression and a decrease in Bax/caspase-3 expression. Administration of L-theanine also decreased the levels of parameters reflecting oxidative stress, such as dihydroethidium, malondialdehyde, and nitric oxide, and increased the levels of parameters reflecting anti-oxidation, such as total antioxidant capacity (T-AOC), glutathione (GSH), and superoxide dismutase (SOD) in ischemic heart tissue. Further analysis showed that L-theanine administration suppressed the MIRI-induced decrease of phospho-JAK2 and phospho-STAT3 in ischemic heart tissue. Inhibition of JAK2 by AG490 (5 mg/kg, once daily) abolished the cardioprotective effect of L-theanine, suggesting that the JAK2/STAT3 signaling pathway may play an essential role in mediating the anti-I/R effect of L-theanine. CONCLUSIONS L-theanine administration suppresses cellular apoptosis and oxidative stress in part via the JAK2/STAT3 signaling pathway, thereby attenuating MIRI-induced cardiac injury. L-theanine could be developed as a potential drug to alleviate cardiac damage in MIRI.
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Affiliation(s)
- Qi Li
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong University, #20 Xishi Road, Nantong, 226001, Jiangsu, China
| | - Jiaqi Ding
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong University, #20 Xishi Road, Nantong, 226001, Jiangsu, China
| | - Boyu Xia
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong University, #20 Xishi Road, Nantong, 226001, Jiangsu, China
| | - Kun Liu
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong University, #20 Xishi Road, Nantong, 226001, Jiangsu, China
| | - Koulong Zheng
- Department of Cardiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Jingjing Wu
- Department of Cardiology, Suzhou Kowloon Hospital of Shanghai Jiaotong University School of Medicine, Suzhou, Jiangsu, China
| | - Chao Huang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, Jiangsu, China
| | - Xiaomei Yuan
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China.
| | - Qingsheng You
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong University, #20 Xishi Road, Nantong, 226001, Jiangsu, China.
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García-Niño WR, Correa F, Zúñiga-Muñoz AM, José-Rodríguez A, Castañeda-Gómez P, Mejía-Díaz E. L-theanine abates oxidative stress and mitochondrial dysfunction in myocardial ischemia-reperfusion injury by positively regulating the antioxidant response. Toxicol Appl Pharmacol 2024; 486:116940. [PMID: 38677602 DOI: 10.1016/j.taap.2024.116940] [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: 01/23/2024] [Revised: 04/08/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
L-theanine (L-THE), a non-protein amino acid isolated from Camelia sinensis, has antioxidant properties that could prevent oxidative damage and mitochondrial dysfunction generated by myocardial ischemia and reperfusion (I/R) injury. The present study aimed to identify the effects of pretreatment with L-THE in rat hearts undergoing I/R. Wistar rats received vehicle or 250 mg/Kg L-THE intragastrically for 10 days. On day 11, hearts were removed under anesthesia and exposed to I/R injury in the Langendorff system. Measurement of left ventricular developed pressure and heart rate ex vivo demonstrates that L-THE prevents I/R-induced loss of cardiac function. Consequently, the infarct size of hearts subjected to I/R was significantly decreased when L-THE was administered. L-THE also mitigated I/R-induced oxidative injury in cardiac tissue by decreasing reactive oxygen species and malondialdehyde levels, while increasing the activity of antioxidant enzymes, SOD and CAT. Additionally, L-THE prevents oxidative phosphorylation breakdown and loss of inner mitochondrial membrane potential caused by I/R, restoring oxygen consumption levels, increasing respiratory control and phosphorylation efficiency, as well as buffering calcium overload. Finally, L-THE modifies the expression of genes involved in the antioxidant response through the overexpression of SOD1, SOD2 and CAT; as well as the transcriptional factors PPARα and Nrf2 in hearts undergoing I/R. In conclusion, L-THE confers cardioprotection against I/R injury by preventing oxidative stress, protecting mitochondrial function, and promoting overexpression of antioxidant genes. More studies are needed to place L-THE at the forefront of cardiovascular research and recommend its therapeutic use.
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Affiliation(s)
- Wylly Ramsés García-Niño
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico.
| | - Francisco Correa
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico
| | - Alejandra María Zúñiga-Muñoz
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico
| | - Aldo José-Rodríguez
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico
| | - Patricio Castañeda-Gómez
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico
| | - Edson Mejía-Díaz
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico
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3
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Zhang Y, Song Y, Zhang J, Li L, He L, Bo J, Gong Z, Xiao W. L-theanine regulates the immune function of SD rats fed high-protein diets through the FABP5/IL-6/STAT3/PPARα pathway. Food Chem Toxicol 2023; 181:114095. [PMID: 37827328 DOI: 10.1016/j.fct.2023.114095] [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: 08/17/2023] [Revised: 10/07/2023] [Accepted: 10/08/2023] [Indexed: 10/14/2023]
Abstract
The protein levels in a diet are correlated with immunity but the long-term intake of excessive protein can compromise various aspects of health. L-theanine regulates immunity and protein metabolism; however, how its regulatory immunity effects under a high-protein diet are unclear. We used proteomics, metabonomics, and western blotting to analyze the effects of diets with different protein levels on immune function in rats to determine the role of L-theanine in immunity under a high-protein diet. The long-term intake of high-protein diets (≥40% protein) promoted oxidative imbalance and inflammation. These were alleviated by L-theanine. High-protein diets inhibited peroxisome proliferator-activated receptor (PPAR)α expression through the interleukin (IL)-6/signal transducer and activator of transcription (STAT)3 pathway and mediated inflammation. L-theanine downregulated anti-fatty acid-binding protein 5 (FABP5), inhibited the IL-6/STAT3 axis, and reduced high-protein diet-induced PPARα inhibition. Therefore, L-theanine alleviates the adverse effects of high-protein diets via the FABP5/IL-6/STAT3/PPARα pathway and regulates the immunity of normally fed rats through the epoxide hydrolase (EPHX)2/nuclear factor-kappa B inhibitor (IκB)α/triggering receptor expressed on myeloid cells (TREM)1 axis.
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Affiliation(s)
- Yangling Zhang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China; Lushan Tea Science Research Institute, Jiujiang, Jiangxi, 332000, China
| | - Yuxin Song
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Jiao Zhang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Lanlan Li
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Lin He
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Jiahui Bo
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Zhihua Gong
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China.
| | - Wenjun Xiao
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, 410128, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, 410128, China.
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Yuan W, Fan H, Yang H, Tang L, Liu Z, Ouyang F, Luo W, Yan Y. Effect and mechanism of HMG-CoA reductase inhibitor on the improvement of elderly essential hypertension-induced vascular endothelial function impairment based on the JAK/STAT pathway. Diagn Pathol 2023; 18:108. [PMID: 37759223 PMCID: PMC10536732 DOI: 10.1186/s13000-023-01393-x] [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: 07/13/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023] Open
Abstract
OBJECTIVE Our research was designed to figure out the influence and mechanism of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor on the improvement of elderly essential hypertension-induced vascular endothelial function impairment based on the JAK/STAT pathway. METHODS Eighty-six elderly patients with essential hypertension were randomized into a control group (oral Amlodipine Besylate Tablets) and an observation group (oral Amlodipine Besylate Tablets + HMG-CoA reductase inhibitor atorvastatin calcium). Patients in both groups were treated with the drug for 12 weeks. Blood pressure, serum levels of inflammatory factors, and vascular endothelial function indicators, and levels of blood lipids were measured. The modeled rats were treated with atorvastatin calcium and a JAK/STAT pathway inhibitor (AG490), and the levels of cardiac function-related indices, left ventricular mass index, lipid levels, serum inflammatory factors and vascular endothelial function-related indices were detected in each group. RESULTS HMG-CoA reductase inhibitor improved blood pressure levels, lipid levels, serum inflammatory factor levels and cardiac function in elderly patients with essential hypertension. Both HMG-CoA reductase inhibitor and AG490 improved blood pressure levels, lipid levels, serum inflammatory factor levels and cardiac function in SHR rats. Both HMG-CoA reductase inhibitor and AG490 decreased p-JAK2/JAK2 and p-STAT3/STAT3 expression levels. CONCLUSION Our study demonstrates that HMG-CoA reductase inhibitor improves elderly essential hypertension-induced vascular endothelial function impairment by blocking the JAK/STAT pathway.
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Affiliation(s)
- Wen Yuan
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Hongjun Fan
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Haibing Yang
- Department of Cardiology, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Liang Tang
- Department of Cardiology, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Zhiming Liu
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Fan Ouyang
- Department of Cardiology, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China.
| | - Wei Luo
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China.
| | - Yong Yan
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China.
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Cao Z, Liu Y, Wang Y, Leng P. Research progress on the role of PDGF/PDGFR in type 2 diabetes. Biomed Pharmacother 2023; 164:114983. [PMID: 37290188 DOI: 10.1016/j.biopha.2023.114983] [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: 03/03/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023] Open
Abstract
Platelet-derived growth factors (PDGFs) are basic proteins stored in the α granules of platelets. PDGFs and their receptors (PDGFRs) are widely expressed in platelets, fibroblasts, vascular endothelial cells, platelets, pericytes, smooth muscle cells and tumor cells. The activation of PDGFR plays a number of critical roles in physiological functions and diseases, including normal embryonic development, cellular differentiation, and responses to tissue damage. In recent years, emerging experimental evidence has shown that activation of the PDGF/PDGFR pathway is involved in the development of diabetes and its complications, such as atherosclerosis, diabetic foot ulcers, diabetic nephropathy, and retinopathy. Research on targeting PDGF/PDGFR as a treatment has also made great progress. In this mini-review, we summarized the role of PDGF in diabetes, as well as the research progress on targeted diabetes therapy, which provides a new strategy for the treatment of type 2 diabetes.
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Affiliation(s)
- Zhanqi Cao
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yijie Liu
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yini Wang
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Ping Leng
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, China.
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6
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Vanizor Kural B, Azi Mohamed S, Kör S, Arıkan Malkoç M, Yuluğ E, Hajizadeh Tekmeh H, Örem A. Caution may be required in using l-theanine in diabetes mellitus: A study on the rats. Biochem Biophys Res Commun 2023; 666:170-178. [PMID: 37199135 DOI: 10.1016/j.bbrc.2023.04.095] [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: 04/06/2023] [Revised: 04/19/2023] [Accepted: 04/25/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND The study aimed to identify the effects of l-theanine on kidney and heart tissues in diabetic rats. 24 male rats included in the study were divided into 4 groups (n = 6/group): SHAM, LTEA, DM and DM + LTEA. For 28 days, drinking water was given to SHAM and DM, and LTEA (200 mg/kg/day) to LTEA and DM + LTEA groups, intragastrically. DM was induced by 120 mg/kg nicotinamide (NA) + 60 mg/kg streptozotocin (STZ). The levels of cystatin C (CysC) and angiotensin-converting enzyme 2 (ACE2) were determined by ELISA kits, homocysteine, electrolytes and iron by an autoanalyzer, the ratio of oxidized/total reduced glutathione (GSSG/TGSH) by assay kits. The tissues were histopathologically analyzed. RESULTS LTEA alleviated histopathological degenerations. However, it decreased significantly serum iron and homocysteine levels (p < 0.05). CONCLUSION LTEA did not exhibit significant protective effects on kidney and heart tissues; it may have affected the homocysteine and iron metabolisms in diabetics.
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Affiliation(s)
- Birgül Vanizor Kural
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye.
| | - Sabrina Azi Mohamed
- Department of Medical Biochemistry, Graduate School of Health Sciences, Karadeniz Technical University, Trabzon, Turkiye
| | - Sevil Kör
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
| | - Meltem Arıkan Malkoç
- Vocational School of Health Sciences, Karadeniz Technical University, Trabzon, Turkiye
| | - Esin Yuluğ
- Department of Histology and Embryology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
| | - Hamed Hajizadeh Tekmeh
- Department of Medical Biochemistry, Graduate School of Health Sciences, Karadeniz Technical University, Trabzon, Turkiye
| | - Asım Örem
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
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7
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Chen S, Kang J, Zhu H, Wang K, Han Z, Wang L, Liu J, Wu Y, He P, Tu Y, Li B. L-Theanine and Immunity: A Review. Molecules 2023; 28:molecules28093846. [PMID: 37175254 PMCID: PMC10179891 DOI: 10.3390/molecules28093846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
L-theanine (N-ethyl-γ-glutamine) is the main amino acid in tea leaves. It not only contributes to tea flavor but also possesses several health benefits. Compared with its sedative and calming activities, the immunomodulatory effects of L-theanine have received less attention. Clinical and epidemiological studies have shown that L-theanine reduces immunosuppression caused by strenuous exercise and prevents colds and influenza by improving immunity. Numerous cell and animal studies have proven that theanine plays an immunoregulatory role in inflammation, nerve damage, the intestinal tract, and tumors by regulating γδT lymphocyte function, glutathione (GSH) synthesis, and the secretion of cytokines and neurotransmitters. In addition, theanine can be used as an immunomodulator in animal production. This article reviews the research progress of L-theanine on immunoregulation and related mechanisms, as well as its application in poultry and animal husbandry. It is hoped that this work will be beneficial to future related research.
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Affiliation(s)
- Shuna Chen
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Jiaxin Kang
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Huanqing Zhu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Kaixi Wang
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Ziyi Han
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Leyu Wang
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Junsheng Liu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Yuanyuan Wu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Puming He
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Youying Tu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Bo Li
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
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Li MY, Liu HY, Wu DT, Kenaan A, Geng F, Li HB, Gunaratne A, Li H, Gan RY. L-Theanine: A Unique Functional Amino Acid in Tea ( Camellia sinensis L.) With Multiple Health Benefits and Food Applications. Front Nutr 2022; 9:853846. [PMID: 35445053 PMCID: PMC9014247 DOI: 10.3389/fnut.2022.853846] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/14/2022] [Indexed: 11/24/2022] Open
Abstract
Tea (Camellia sinensis L.) is a very popular health drink and has attracted increasing attention in recent years due to its various bioactive substances. Among them, L-theanine, a unique free amino acid, is one of the most important substances in tea and endows tea with a special flavor. Moreover, L-theanine is also a bioactive compound with plenty of health benefits, including antioxidant, anti-inflammatory, neuroprotective, anticancer, metabolic regulatory, cardiovascular protective, liver and kidney protective, immune regulatory, and anti-obesity effects. Due to the unique characteristics and beneficial functions, L-theanine has potential applications in the development of functional foods. This review summarized the influencing factors of L-theanine content in teas, the main health benefits and related molecular mechanisms of L-theanine, and its applications in food, understanding of which can provide updated information for the further research of L-theanine.
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Affiliation(s)
- Ming-Yue Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China.,Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
| | - Hong-Yan Liu
- Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
| | - Ding-Tao Wu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Ahmad Kenaan
- National Graphene Institute, The University of Manchester, Manchester, United Kingdom
| | - Fang Geng
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Anil Gunaratne
- Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka
| | - Hang Li
- Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
| | - Ren-You Gan
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China.,Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
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Wang T, Xie L, Bi H, Li Y, Li Y, Zhao J. Urantide alleviates the symptoms of atherosclerotic rats in vivo and in vitro models through the JAK2/STAT3 signaling pathway. Eur J Pharmacol 2021; 902:174037. [PMID: 33891969 DOI: 10.1016/j.ejphar.2021.174037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 01/09/2023]
Abstract
Atherosclerosis is the leading cause of human death, and its occurrence and development are related to the urotensin II (UII) and UII receptor (UT) system and the biological function of vascular smooth muscle cells (VSMCs). During atherosclerosis, impaired biological function VSMCs may promote atherosclerotic plaque formation. The Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3) pathway is an important mediator of signal transduction; however, the role of this signaling pathway in atherosclerosis and VSMCs remains unknown. This study aimed to investigate the effects of urantide on the JAK2/STAT3 signaling pathway in atherosclerosis. We examined the effect of urantide on the UII/UT system and the JAK2/STAT3 signaling pathway in a high fat diet induced atherosclerosis rat model and studied the effect and mechanism of urantide on the phenotypic transformation of VSMCs. We found that the UII/UT system and JAK2/STAT3 signaling pathway were highly activated in the thoracic aorta in atherosclerotic rats and in ox-LDL- and UII-induced VSMCs. After urantide treatment, the pathological changes in atherosclerotic rats were effectively improved, and the activities of the UII/UT system and JAK2/STAT3 signaling pathway were inhibited. Moreover, urantide effectively inhibited proliferation and migration and reversed the phenotypic transformation of VSMCs. These results demonstrated that urantide may control the JAK2/STAT3 signaling pathway by antagonizing the UII/UT system, thereby maintaining the biological function of VSMCs and potentially preventing and curing atherosclerosis.
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MESH Headings
- Animals
- Aorta/drug effects
- Aorta/pathology
- Atherosclerosis/chemically induced
- Atherosclerosis/drug therapy
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Disease Models, Animal
- Janus Kinase 2/genetics
- Janus Kinase 2/metabolism
- Lipoproteins, LDL/toxicity
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Peptide Fragments/pharmacology
- Peptide Fragments/therapeutic use
- Primary Cell Culture
- Rats, Wistar
- Receptors, G-Protein-Coupled/antagonists & inhibitors
- Receptors, G-Protein-Coupled/drug effects
- Receptors, G-Protein-Coupled/metabolism
- STAT3 Transcription Factor/genetics
- STAT3 Transcription Factor/metabolism
- Signal Transduction/drug effects
- Urotensins/antagonists & inhibitors
- Urotensins/metabolism
- Urotensins/pharmacology
- Urotensins/therapeutic use
- Urotensins/toxicity
- Rats
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Affiliation(s)
- Tu Wang
- Department of Pathophysiology, Chengde Medical University, Chengde, Hebei, 067000, China
| | - Lide Xie
- Department of Pathophysiology, Chengde Medical University, Chengde, Hebei, 067000, China
| | - Hongdong Bi
- Department of Pathophysiology, Chengde Medical University, Chengde, Hebei, 067000, China
| | - Ying Li
- Department of Pathophysiology, Chengde Medical University, Chengde, Hebei, 067000, China
| | - Ying Li
- Department of Pathophysiology, Chengde Medical University, Chengde, Hebei, 067000, China
| | - Juan Zhao
- Department of Pathophysiology, Chengde Medical University, Chengde, Hebei, 067000, China.
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Shojaei-Zarghani S, Rafraf M, Yari-Khosroushahi A. Theanine and cancer: A systematic review of the literature. Phytother Res 2021; 35:4782-4794. [PMID: 33891786 DOI: 10.1002/ptr.7110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/23/2021] [Accepted: 03/23/2021] [Indexed: 12/12/2022]
Abstract
A growing literature indicates several health benefits of theanine, a major nonprotein derivative amino acid special to tea, and a nonedible mushroom. This study aimed to systematically review the scientific evidence regarding the anticarcinogen and anticancer effects of natural theanine. A systematic search for the relevant articles published until January 2021 on MEDLINE, Scopus, and Web of Knowledge was conducted. Out of 377 initial records, 14 in vitro, ex vivo, and in vivo studies met our inclusion criteria. Most of the included in vitro and ex vivo studies reported beneficial effects of theanine on the proliferation, apoptosis, metastasis, migration, and invasion in various cancer cell lines. The in vivo studies also supported the potential impacts of theanine on cancer incidence or progression. Theanine exerted its anticancer function by inhibiting EGFR, VEGFR, Met, and Akt/mTOR, JAK2/STAT3, and ERK/NFκB pathways, as well as activating the intrinsic apoptosis pathway and caspase-independent programmed cell death. In conclusion, the results indicated moderate apoptotic, antimetastatic, antimigration, and anti-invasion effects, along with the mild antiproliferative influence of theanine on cancer. Further studies are necessary to ascertain the effectiveness of theanine on the prevention and suppression of cancer and shed light upon the attributable mechanisms in the in vivo condition.
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Affiliation(s)
- Sara Shojaei-Zarghani
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran.,Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Rafraf
- Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmad Yari-Khosroushahi
- Drug Applied Research Center, Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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11
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Li Y, Zhang W, Zhao Y, Zhu T, Li Q. Gut-derived Shewanella induces the differentially expressed proteins in leukocytes of Lampetra japonica. J Proteomics 2021; 236:104123. [PMID: 33540063 DOI: 10.1016/j.jprot.2021.104123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 12/21/2020] [Accepted: 01/19/2021] [Indexed: 12/12/2022]
Abstract
Lampreys, one of the most basal jawless vertebrates, are an excellent animal model for investigating vertebrate evolution, embryonic development, and the origin of adaptive immunity. Gut-derived Shewanella strain was isolated and then proved to induce adaptive immunity response in lampreys. Using Shewanella as the antigen, the effect of gut-derived Shewanella on lamprey leukocyte proteome was investigated via label-free liquid chromatography-tandem mass spectrometry for quantitative proteomics analysis. Twenty-five differentially expressed proteins in lamprey leukocytes were identified with significant differences. The differentially expressed proteins were associated with several biological processes. Among these proteins, the signal transducer and activator of transcription 3 (STAT3) was significantly upregulated in leukocytes after Shewanella immunization, indicating that lamprey STAT3 (L-STAT3) was involved in Shewanella-lamprey interactions. Expression pattern analysis revealed that L-STAT3 was mainly distributed in the cytoplasm and upregulated in other tissues after Shewanella immunization. Moreover, L-STAT3 overexpression could promote HEK-293 T and HeLa cell proliferation. However, the functions of L-STAT3 in the adaptive immune response of lamprey induced by gut-derived Shewanella remain to be explored. Overall, the identification of leukocyte proteins involved in Shewanella-lamprey interactions provides important information for understanding the variable lymphocyte receptor-based adaptive immune signal pathways in lampreys. SIGNIFICANCE: Lampreys are considered to be an excellent animal model for studying the origin and development of adaptive immune systems in vertebrates. Lampreys use variable lymphocyte receptors (VLRs) in recognizing antigens. However, the understanding of the VLR-based adaptive immune signal pathways in lampreys remains unclear. Intestinal bacteria could regulate the development of host immune systems. The attempts of inducing lamprey leukocyte differentially expressed proteins using the gut bacterial as the antigen will supply an promising avenue to explore the molecular mechanism of the intestinal bacteria interaction with it's host. Also, the identification of differentially expressed proteins involved in interactions between gut-derived Shewanella and lamprey will supply clues for understanding the variable lymphocyte receptor-based adaptive immune signal pathways in lampreys.
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Affiliation(s)
- Yingying Li
- School of Life Science, Liaoning Normal University, Dalian, China; Lamprey Research Center, Liaoning Normal University, Dalian, China; Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China.
| | - Wenying Zhang
- School of Life Science, Liaoning Normal University, Dalian, China; Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Yihua Zhao
- School of Life Science, Liaoning Normal University, Dalian, China; Lamprey Research Center, Liaoning Normal University, Dalian, China
| | - Ting Zhu
- School of Life Science, Liaoning Normal University, Dalian, China; Lamprey Research Center, Liaoning Normal University, Dalian, China; Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Qingwei Li
- School of Life Science, Liaoning Normal University, Dalian, China; Lamprey Research Center, Liaoning Normal University, Dalian, China; Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China.
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12
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Shojaei-Zarghani S, Yari Khosroushahi A, Rafraf M. Oncopreventive effects of theanine and theobromine on dimethylhydrazine-induced colon cancer model. Biomed Pharmacother 2021; 134:111140. [PMID: 33360052 DOI: 10.1016/j.biopha.2020.111140] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/23/2020] [Accepted: 12/10/2020] [Indexed: 12/22/2022] Open
Abstract
Theanine and theobromine are abundantly present in tea and cocoa, respectively. This study was performed to assess the chemopreventive effects of these phytochemicals, alone or together, on dimethylhydrazine (DMH)-induced colon cancer. Thirty male Wistar rats were divided into five groups and subcutaneously injected with saline (negative control group) or 30 mg/kg DMH (the other groups) two times/week for 12 weeks. The negative and positive control animals were orally treated with drinking water, and the other groups were gavaged with theanine (400 mg/kg), theobromine (100 mg/kg), or their mixture for two weeks before and throughout the injection period. At the end of the study, the morphological and histopathological features, Ki-67 proliferation marker, and the expression of Akt/mTOR, JAK2/STAT3, MAPK/ERK, and TGF-β/Smad pathways were investigated. Theanine and theobromine, alone or together, reduced the number of cancerous and precancerous lesions, the volume of tumors, the Ki-67 immunostaining, and the expression of Akt/mTOR and JAK2/STAT3 oncogenic pathways. The simultaneous treatment was more effective in the down-regulation of Akt and mTOR compared to either theanine or theobromine alone. Theobromine administration also caused more inhibitory effects on the Ki-67 and Akt/mTOR expression than theanine. Besides, all dietary interventions increased the mRNA and protein expression of Smad2. In conclusion, theanine and theobromine, alone and in combination, inhibited tumorigenesis through down-regulation of the Akt/mTOR and JAK2/STAT3 pathways and an increment of the Smad2 tumor suppressor. The inhibition of the Akt/mTOR pathway was more pronounced by simultaneous treatment.
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Affiliation(s)
- Sara Shojaei-Zarghani
- Student Research Committee, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran; Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmad Yari Khosroushahi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Maryam Rafraf
- Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran.
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13
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Zhang Y, You S, Tian Y, Lu S, Cao L, Sun Y, Zhang N. WWP2 regulates SIRT1-STAT3 acetylation and phosphorylation involved in hypertensive angiopathy. J Cell Mol Med 2020; 24:9041-9054. [PMID: 32627301 PMCID: PMC7417706 DOI: 10.1111/jcmm.15538] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 04/23/2020] [Accepted: 06/05/2020] [Indexed: 12/16/2022] Open
Abstract
WWP2 is a HECT‐type E3 ubiquitin ligase that regulates various physiological and pathological activities by binding to different substrates, but its function and regulatory mechanism in vascular smooth muscle cells (VSMCs) are still unknown. Here, we clarified the role of WWP2 in the regulation of SIRT1‐STAT3 and the impact of this regulatory process in VSMCs. We demonstrated that WWP2 expression was significantly increased in angiotensin II‐induced VSMCs model. Knockdown of WWP2 significantly inhibited angiotensin II‐induced VSMCs proliferation, migration and phenotypic transformation, whereas overexpression of WWP2 had opposite effects. In vivo experiments showed that vascular smooth muscle‐specific WWP2 knockout mice significantly relieved angiotensin II‐induced hypertensive angiopathy. Mechanistically, mass spectrometry and co‐immunoprecipitation assays identified that WWP2 is a novel interacting protein of SIRT1 and STAT3. Moreover, WWP2 formed a complex with SIRT1‐STAT3, inhibiting the interaction between SIRT1 and STAT3, then reducing the inhibitory effect of SIRT1 on STAT3, ensuing promoting STAT3‐K685 acetylation and STAT3‐Y705 phosphorylation in angiotensin II‐induced VSMCs and mice. In conclusion, WWP2 modulates hypertensive angiopathy by regulating SIRT1‐STAT3 and WWP2 suppression in VSMCs can alleviate hypertensive angiopathy vitro and vivo. These findings provide new insights into the treatment of hypertensive vascular diseases.
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Affiliation(s)
- Ying Zhang
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shilong You
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yichen Tian
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Saien Lu
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Liu Cao
- Key Laboratory of Medical Cell Biology, Ministry of Education, Institute of Translational Medicine, China Medical University, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning, China
| | - Yingxian Sun
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Naijin Zhang
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
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14
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Tang HX, Qin XP, Li J. Role of the signal transducer and activator of transcription 3 protein in the proliferation of vascular smooth muscle cells. Vascular 2020; 28:821-828. [PMID: 32486969 DOI: 10.1177/1708538120929504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Cardiovascular disease (CVD) remains the primary cause of morbidity and mortality worldwide. The abnormal proliferation of vascular smooth muscle cells (VSMCs) is a key event in the pathogenesis of CVD. The functional and phenotypic changes in vascular cells are mediated by complex signaling cascades that initiate and control genetic reprogramming. Many studies have demonstrated that signal transducer and activator of transcription 3 (STAT3) regulates a diverse array of functions relevant to atherosclerosis. METHODS In this review, we summarize the studies on the STAT3-mediated proliferation of VSMCs and subsequent CVDs such as hypertension, atherosclerosis, stroke, coronary artery disease, and myocardial infarction. Furthermore, we describe the general background of STAT3, its structure, function and regulation as well as the STAT3 signaling pathway. Finally, we highlight some potential issues and propose some solutions to these issues.Results and conclusions: STAT3 activation promotes the proliferation of VSMCs by regulating the transcription of genes. Studying the mechanism of VSMC proliferation induced by the STAT3 pathway is valuable for finding therapeutic targets for CVD.
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Affiliation(s)
- Hong-Xia Tang
- The First People's Hospital of Chenzhou, Institute of Pharmacy and Pharmacology, University of South China, Hunan, China
| | - Xu-Ping Qin
- The First People's Hospital of Chenzhou, Institute of Pharmacy and Pharmacology, University of South China, Hunan, China
| | - Jie Li
- The First People's Hospital of Chenzhou, Institute of Pharmacy and Pharmacology, University of South China, Hunan, China
- School of Pharmacy, Southern Medical University, Guangdong, China
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15
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l-Theanine attenuates neointimal hyperplasia via suppression of vascular smooth muscle cell phenotypic modulation. J Nutr Biochem 2020; 82:108398. [PMID: 32402912 DOI: 10.1016/j.jnutbio.2020.108398] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/04/2020] [Accepted: 04/02/2020] [Indexed: 12/29/2022]
Abstract
Neointimal hyperplasia is a prominent pathological phenomenon in the process of stent restenosis. Abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) play major pathological processes involved in the development of restenosis. l-Theanine, one of the major amino acid components in green tea, has been reported to improve vascular function. Here we display the effects of l-theanine on neointima formation and the underlying mechanism. In the rat carotid-artery balloon-injury model, l-theanine greatly inhibited neointima formation and prevented VSMCs from a contractile phenotype switching to a synthetic phenotype. In vitro study showed that l-theanine significantly inhibited PDGF-BB-induced VSMC proliferation and migration, which was comparable with the effect of l-theanine on AngII-induced VSMC proliferation and migration. Western blot analysis demonstrated that l-theanine suppressed PDGF-BB and AngII-induced reduction of SMA and SM22α and increment of OPN, suggesting that l-theanine inhibited the transformation of VSMCs from contractile to the synthetic phenotype. Further experiments showed that l-theanine exhibits potential preventive effects on neointimal hyperplasia and related vascular remodeling via inhibition of phosphorylation of Elk-1 and activation of MAPK1. The present study provides the new experimental evidence that l-theanine has potential clinical application as an anti-restenosis agent for the prevention of restenosis.
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16
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Zhang N, Zhang Y, You S, Tian Y, Lu S, Cao L, Sun Y. Septin4 Prevents PDGF-BB-induced HAVSMC Phenotypic Transformation, Proliferation and Migration by Promoting SIRT1-STAT3 Deacetylation and Dephosphorylation. Int J Biol Sci 2020; 16:708-718. [PMID: 32025217 PMCID: PMC6990924 DOI: 10.7150/ijbs.39843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 12/06/2019] [Indexed: 02/06/2023] Open
Abstract
SIRT1 and STAT3 are key to human aortic vascular smooth muscle cells (HAVSMCs) proliferation, migration and phenotypic transformation, but the regulatory mechanism of SIRT1-STAT3 in this process is still unclear. Septin4 is a cytoskeleton-related protein that regulates oxidative stress-vascular endothelial injury. However, the role and underlying mechanism of Septin4 in atherosclerosis remains unknown. Here, we revealed the role and mechanism of Septin4 in regulating SIRT1-STAT3 in atherosclerosis. We determined that the expression of Septin4 were markedly increased in Apoe-/- atherosclerosis mice and PDGF-BB-induced HAVSMCs. Knockdown of Septin4 significantly increased PDGF-BB-induced HAVSMCs proliferation, migration and phenotypic transformation, while overexpression of Septin4 had the opposite effects. Mechanically, co-immunoprecipitation results demonstrated that Septin4 was a novel interacting protein of STAT3 and SIRT1. Septin4 formed a complex with SIRT1-STAT3, enhancing the interaction between SIRT1 and STAT3, ensuing promoting SIRT1-regulated STAT3-K685 deacetylation and STAT3-Y705 dephosphorylation, which inhibited PDGF-BB-induced HAVSMCs proliferation, migration and phenotype transformation. Therefore, our findings provide novel insights into the prevention and treatment of atherosclerosis.
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Affiliation(s)
- Naijin Zhang
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ying Zhang
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China.,Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University; Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning, China
| | - Shilong You
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yichen Tian
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Saien Lu
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Liu Cao
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University; Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning, China
| | - Yingxian Sun
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
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17
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曹 玉, 孙 四, 杨 冬, 霍 艳, 邱 飞, 谢 雪, 庹 勤. [Daxx overexpression inhibits AngⅡ-induced proliferation and migration in vascular smooth muscle cells]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:1173-1179. [PMID: 31801713 PMCID: PMC6867952 DOI: 10.12122/j.issn.1673-4254.2019.10.07] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To construct a recombinant lentiviral expression vector pCDH-Daxx-EGFP to investigate the effect of Daxx on the proliferation of vascular smooth muscle cells (VSMCs). METHODS The recombinant lentiviral expression vector pCDHDaxx-EGFP was constructed using PCR-based accurate synthesis method. After identification by sequencing and enzyme digestion, the recombinant lentiviral vector was contransfected into 293T cells with lentivirus packaging vector. The recombinant lentivirus particles were collected and purified to infect VSMCs, whose expression of Daxx was detected with Western boltting. The cells infected with the empty vector pCDH-EGFP or pCDH-Daxx-EGFP were incubated in serum-free medium or in the presence of angiotensin Ⅱ (AngⅡ). The cell viability was determined with MTT assay, and the cell cycle changes were analyzed with flow cytometry. The cell migration ability was assessed using a scratch wound healing assay. The expression of p-Akt protein in the cells was detected using Western blotting. RESULTS Double enzyme digestion and sequencing confirmed successful construction of the recombinant plasmid. Compared with the cells infected with the empty vector, the cells infected with pCDH-Daxx-EGFP exhibited significantly increased expressions of Daxx protein (P < 0.05). AngⅡ treatment of the cells infected with the pCDH-Daxx-EGFP, as compared with the cells infected with the empty vector, significantly lowered the cell viability, S phase cell ratio and cell migration ability (P < 0.05), and significantly decreased the expression level of p-Akt protein (P < 0.05). CONCLUSIONS We successfully constructed the recombinant lentiviral vector pCDH-Daxx-EGFP and overexpressed Daxx in primary cultured VSMCs using this vector. Daxx overexpression can inhibit AngⅡ-induced proliferation and migration in VSMCs probably by regulating p-Akt protein.
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Affiliation(s)
- 玉梅 曹
- 湖南中医药大学 药学院,湖南 长沙 410208School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - 四玉 孙
- 湖南中医药大学 药学院,湖南 长沙 410208School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - 冬梅 杨
- 湖南中医药大学 医学院,湖南 长沙 410208School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, China
| | - 艳杰 霍
- 湖南中医药大学 药学院,湖南 长沙 410208School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - 飞 邱
- 湖南中医药大学 医学院,湖南 长沙 410208School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, China
| | - 雪娇 谢
- 湖南中医药大学 医学院,湖南 长沙 410208School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, China
| | - 勤慧 庹
- 湖南中医药大学 药学院,湖南 长沙 410208School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
- 湖南中医药大学 医学院,湖南 长沙 410208School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, China
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Lu J, Shan J, Liu N, Ding Y, Wang P. Tanshinone IIA Can Inhibit Angiotensin II-Induced Proliferation and Autophagy of Vascular Smooth Muscle Cells via Regulating the MAPK Signaling Pathway. Biol Pharm Bull 2019; 42:1783-1788. [PMID: 31391347 DOI: 10.1248/bpb.b19-00053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To examine the effect of tanshinone IIA on Angiotensin II (Ang II)-induced proliferation and autophagy in vascular smooth muscle cells (VSMCs) and the related mechanism. VSMCs were treated with Ang II with or without tanshinone IIA (1, 5 and 10 µg/mL), and the proliferation, apoptosis in cells with different treatment were examined by methylthiazolyl tetrazolium (MTT) and flow cytometry methods. Moreover, the expression of autophagy related proteins and mitogen-activated protein kinase (MAPK) signaling molecules were examined by RT-quantitative (q)PCR and Western blot methods. Ang II induced significantly increase in the proliferation and autophagy of VSMCs, and the MAPK signaling was activated. Tanshinone IIA can attenuate Ang II-induced effects via down-regulating the MAPK signaling pathway. Tanshinone IIA can inhibit Ang II-induced proliferation and autophagy of VSMCs via regulating the MAPK signaling pathway.
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Affiliation(s)
- Jingping Lu
- Department of Cardiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Jinjun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatics, Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Ning Liu
- Department of Cardiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Yao Ding
- Department of Cardiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Pei Wang
- Department of Cardiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine
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