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Yuan T, Tan M, Xu Y, Xiao Q, Wang H, Wu C, Li F, Peng L. All-in-one smart dressing for simultaneous angiogenesis and neural regeneration. J Nanobiotechnology 2023; 21:38. [PMID: 36737778 PMCID: PMC9896818 DOI: 10.1186/s12951-023-01787-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 01/15/2023] [Indexed: 02/05/2023] Open
Abstract
Wound repair, along with skin appendage regeneration, is challenged by insufficient angiogenesis and neural regeneration. Therefore, promoting both proangiogenic and neuro-regenerative therapeutic effects is essential for effective wound repair. However, most therapeutic systems apply these strategies separately or ineffectively. This study investigates the performance of an all-in-one smart dressing (ASD) that integrates angiogenic functional materials and multiple biological factors within a light crosslinked hydrogel, forming a multi-functional dressing capable of facilitating simultaneous micro-vascularization and neural regeneration. The ASD uses a zeolite-imidazolate framework 67 with anchored vanadium oxide (VO2@ZIF-67) that allows for the on-demand release of Co2+ with fluctuations in pH at the wound site to stimulate angiogenesis. It can simultaneously release CXCL12, ligustroflavone, and ginsenoside Rg1 in a sustained manner to enhance the recruitment of endogenous mesenchymal stem cells, inhibit senescence, and induce neural differentiation to achieve in situ nerve regeneration. The ASD can stimulate rapid angiogenesis and nerve regeneration within 17 days through multiple angiogenic and neuro-regenerative cues within one dressing. This study provides a proof-of-concept for integrating functional nanomaterials and multiple complementary drugs within a smart dressing for simultaneous angiogenesis and neural regeneration.
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Affiliation(s)
- Tiejun Yuan
- grid.13402.340000 0004 1759 700XCollege of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 People’s Republic of China
| | - Minhong Tan
- grid.13402.340000 0004 1759 700XCollege of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 People’s Republic of China ,grid.13402.340000 0004 1759 700XCollege of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People’s Republic of China
| | - Yang Xu
- grid.13402.340000 0004 1759 700XCollege of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 People’s Republic of China
| | - Qiyao Xiao
- grid.13402.340000 0004 1759 700XCollege of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 People’s Republic of China
| | - Hui Wang
- grid.13402.340000 0004 1759 700XCollege of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People’s Republic of China
| | - Chen Wu
- grid.13402.340000 0004 1759 700XCollege of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People’s Republic of China
| | - Fulun Li
- grid.412540.60000 0001 2372 7462Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437 People’s Republic of China
| | - Lihua Peng
- grid.13402.340000 0004 1759 700XCollege of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058 People’s Republic of China ,grid.259384.10000 0000 8945 4455State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, People’s Republic of China
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Yuan TJ, Xu XH, Zhou N, Yan G, Gu TW, Peng LH. Phytochemicals as new therapeutic candidates simultaneously stimulate proliferation and counteract senescence of stem cells. Biomed Pharmacother 2022; 151:113170. [PMID: 35676782 DOI: 10.1016/j.biopha.2022.113170] [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: 02/17/2022] [Revised: 05/07/2022] [Accepted: 05/19/2022] [Indexed: 11/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are promising candidates for regenerative therapy. However, the research and clinical application of MSCs are greatly hindered by the limited cells proliferation and replicative senescence. Therapeutic agents that can both enhance the proliferative ability and decrease the replicative senescence of MSCs are greatly needed, however, not been reported yet. Herein, for the first time, we identified 11 natural compounds from medicinal plants with both excellent proliferative and anti-senescence abilities in MSCs. The qPCR analysis indicated underlying mechanisms associated with fibroblast growth factor, transforming growth factor, Wnt/β-catenin and leukemia-induced factor in proliferation; the reactive oxygen species production, mitochondrial dysfunction autophagy and proteostasis are involved in cells senescence-related mechanism. Phytochemicals are demonstrated as novel therapeutic candidates with promising effects in both stimulating proliferation and retarding replicative senescence of stem cells with high safety.
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Affiliation(s)
- Tie-Jun Yuan
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Xue-Han Xu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Nan Zhou
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Ge Yan
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Ting-Wei Gu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Li-Hua Peng
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China; State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau.
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Ye X, Tian C, Liu L, Feng G, Jin K, Wang H, Chen J, Liu L. Oncostatin M Maintains Naïve Pluripotency of mESCs by Tetraploid Embryo Complementation (TEC) Assay. Front Cell Dev Biol 2021; 9:675411. [PMID: 34124061 PMCID: PMC8189179 DOI: 10.3389/fcell.2021.675411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 05/03/2021] [Indexed: 11/13/2022] Open
Abstract
It has been well established that leukemia inhibitory factor (LIF) is essential for maintaining naïve pluripotency of embryonic stem cells (ESCs). Oncostatin M (OSM) is a member of the IL-6 family of cytokines which share gp130 as a receptor subunit, and the OSM-gp130 complex can recruit either LIF receptor β or OSM receptor β. Here we show that OSM can completely replace LIF to maintain naïve pluripotency of ESCs. Mouse ESCs (mESCs) cultured in the presence of LIF or OSM not only express pluripotency genes at similar levels but also exhibit the same developmental pluripotency as evidenced by the generation of germline competent chimeras, supporting previous findings. Moreover, we demonstrate by tetraploid embryo complementation assay, the most stringent functional test of authentic pluripotency that mESCs cultured in OSM produce viable all-ESC pups. Furthermore, telomere length and telomerase activity, which are also crucial for unlimited self-renewal and genomic stability of mESCs, do not differ in mESCs cultured under OSM or LIF. The transcriptome of mESCs cultured in OSM overall is very similar to that of LIF, and OSM activates Stat3 signaling pathway, like LIF. Additionally, OSM upregulates pentose and glucuronate interconversion, ascorbate and aldarate metabolism, and steroid and retinol metabolic pathways. Although the significance of these pathways remains to be determined, our data shows that OSM can maintain naïve pluripotent stem cells in the absence of LIF.
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Affiliation(s)
- Xiaoying Ye
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Chenglei Tian
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China.,Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), University of Copenhagen, Copenhagen, Denmark
| | - Linlin Liu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Guofeng Feng
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Kairang Jin
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Haiying Wang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Jiyu Chen
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Lin Liu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin, China
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Dai S, Liang T, Shi X, Luo Z, Yang H. Salvianolic Acid B Protects Intervertebral Discs from Oxidative Stress-Induced Degeneration via Activation of the JAK2/STAT3 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6672978. [PMID: 33628378 PMCID: PMC7896869 DOI: 10.1155/2021/6672978] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/15/2021] [Accepted: 01/23/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate the influence of salvianolic acid B (SAB), an antioxidant derived from Danshen, on intervertebral disc degeneration (IDD) and its possible molecular mechanisms. METHODS Sixty adult rats were randomly grouped (control, IDD, and SAB IDD groups). IDD was induced using needle puncture. The rats received daily administration of SAB (20 mg/kg) in the SAB IDD group while the other two groups received only distilled water. The extent of IDD was evaluated using MRI after 3 and 6 weeks and histology after 6 weeks. Oxidative stress was assessed using the ELISA method. In in vitro experiments, nucleus pulposus cells (NPCs) were treated with H2O2 (100 μM) or SAB+H2O2, and levels of oxidative stress were measured. Cell apoptosis was assessed by flow cytometry, expression levels of Bcl-2, Bax, and cleaved caspase-3 proteins. Cell proliferation rate was assessed by EdU analysis. Pathway involvement was determined by Western blotting while the influence of the pathway on NPCs was explored using the pathway inhibitor AG490. RESULTS The data demonstrate that SAB attenuated injury-induced IDD and oxidative stress, caused by activation of the JAK2/STAT3 signaling pathway in vivo. Oxidative stress induced by H2O2 was reversed by SAB in vitro. SAB reduced the increased cell apoptosis, cleaved caspase-3 expression, and caspase-3 activity induced by H2O2. Reduced cell proliferation and decreased Bcl-2/Bax ratio induced by H2O2 were rescued by SAB. Additionally, the JAK2/STAT3 pathway was activated by SAB, while AG490 counteracted this effect. CONCLUSION The results suggest that SAB protects intervertebral discs from oxidative stress-induced degeneration by enhancing proliferation and attenuating apoptosis via activation of the JAK2/STAT3 signaling pathway.
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Affiliation(s)
- Shouqian Dai
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Orthopedics Institute of Soochow University, Suzhou, Jiangsu, China
| | - Ting Liang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Orthopedics Institute of Soochow University, Suzhou, Jiangsu, China
| | - Xiu Shi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Zongping Luo
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Orthopedics Institute of Soochow University, Suzhou, Jiangsu, China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Orthopedics Institute of Soochow University, Suzhou, Jiangsu, China
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Xiao Z, Liu W, Mu YP, Zhang H, Wang XN, Zhao CQ, Chen JM, Liu P. Pharmacological Effects of Salvianolic Acid B Against Oxidative Damage. Front Pharmacol 2020; 11:572373. [PMID: 33343348 PMCID: PMC7741185 DOI: 10.3389/fphar.2020.572373] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 09/25/2020] [Indexed: 12/15/2022] Open
Abstract
Salvianolic acid B (Sal B) is one of the main active ingredients of Salvia miltiorrhiza, with strong antioxidant effects. Recent findings have shown that Sal B has anti-inflammatory, anti-apoptotic, anti-fibrotic effects and can promote stem cell proliferation and differentiation, and has a beneficial effect on cardiovascular and cerebrovascular diseases, aging, and liver fibrosis. Reactive oxygen species (ROS) include oxygen free radicals and oxygen-containing non-free radicals. ROS can regulate cell proliferation, survival, death and differentiation to regulate inflammation, and immunity, while Sal B can scavenge oxygen free radicals by providing hydrogen atoms and reduce the production of oxygen free radicals and oxygen-containing non-radicals by regulating the expression of antioxidant enzymes. The many pharmacological effects of Sal B may be closely related to its elimination and inhibition of ROS generation, and Nuclear factor E2-related factor 2/Kelch-like ECH-related protein 1 may be the core link in its regulation of the expression of antioxidant enzyme to exert its antioxidant effect. What is confusing and interesting is that Sal B exhibits the opposite mechanisms in tumors. To clarify the specific target of Sal B and the correlation between its regulation of oxidative stress and energy metabolism homeostasis will help to further understand its role in different pathological conditions, and provide a scientific basis for its further clinical application and new drug development. Although Sal B has broad prospects in clinical application due to its extensive pharmacological effects, the low bioavailability is a serious obstacle to further improving its efficacy in vivo and promoting clinical application. Therefore, how to improve the availability of Sal B in vivo requires the joint efforts of many interdisciplinary subjects.
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Affiliation(s)
- Zhun Xiao
- Institute of Interdisciplinary Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wei Liu
- Institute of Liver Diseases, Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
| | - Yong-Ping Mu
- Institute of Liver Diseases, Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
| | - Hua Zhang
- Institute of Liver Diseases, Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
| | - Xiao-Ning Wang
- Institute of Interdisciplinary Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
| | - Chang-Qing Zhao
- Institute of Liver Diseases, Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
| | - Jia-Mei Chen
- Institute of Liver Diseases, Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
| | - Ping Liu
- Institute of Interdisciplinary Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Liver Diseases, Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Shanghai Key Laboratory of Traditional Chinese Medicine, Shanghai, China
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6
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Wang CH, Chang CH, Lin TL, Fu RH, Huang YC, Chen SY, Shyu WC, Liu SP. The novel application of cordycepin in maintaining stem cell pluripotency and increasing iPS cell generation efficiency. Sci Rep 2020; 10:2187. [PMID: 32042022 PMCID: PMC7010772 DOI: 10.1038/s41598-020-59154-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/20/2020] [Indexed: 12/15/2022] Open
Abstract
Maintaining the pluripotency of either embryonic stem (ES) cells or induced pluripotent stem (iPS) cells is a fundamental part of stem cell research. In this study, we reported that cordycepin promoted the expression of pluripotency markers in ES and iPS cells. ES cells treated with cordycepin demonstrated their potential for generating embryoid bodies and differentiating into all three germ layers. The expression levels of phospho-Jak2, phospho-Stat3, integrin αV, and integrin β5 were increased after cordycepin treatment. Furthermore, the protein expression levels of IL-6 family proteins (IL-6, IL-11, LIF, oncostatin M (OSM), ciliary neurotrophic factor (CNTF)), and epidermal growth factor (EGF) were also upregulated after cordycepin treatment, but were restored after co-treatment with a Jak2 inhibitor (AG490). The gene expression levels of Yamanaka factors were upregulated in mouse embryonic fibroblasts (MEFs) after cordycepin treatment. Moreover, the generation efficiencies of iPS cells were elevated after cordycepin treatment. We found that iPS cells generated after cordycepin treatment, not only expressed pluripotency markers, but also showed the ability of differentiating into neuron stem/progenitor cells. Taken together, we demonstrated that cordycepin maintained the pluripotency of stem cells via regulation of extracellular matrix (ECM) and Jak2/Stat3 signaling pathway and improved the generation efficiency of iPSCs.
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Affiliation(s)
- Chie-Hong Wang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Cheng-Hsuan Chang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Tsung-Li Lin
- Department of Orthopedics, China Medical University Hospital, Taichung, Taiwan
| | - Ru-Huei Fu
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,Center for Translational Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Chuen Huang
- Genetics Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Shih-Yin Chen
- Genetics Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Woei-Cherng Shyu
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,Center for Translational Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Shih-Ping Liu
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan. .,Center for Translational Medicine, China Medical University Hospital, Taichung, Taiwan. .,Department of Social Work, Asia University, Taichung, Taiwan.
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Li J, Guan XK, Liu RX. Role of Chinese Herbal Medicines in Regulation of Energy Metabolism in Treating Cardiovascular Diseases. Chin J Integr Med 2019; 25:307-315. [PMID: 31236891 DOI: 10.1007/s11655-018-2943-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2018] [Indexed: 02/06/2023]
Abstract
Recently, studying myocardial energy metabolism pathways or improving myocardial metabolism through drugs is another effective strategy for treating ischemic heart disease. Many active components of Chinese herbal medicines (CHMs) have been found to modulate energy metabolism in myocardial cells, cerebral vascular cells, endothelial cells and tumour cells. This paper reviews the advances in studies on the active components of CHMs that modulating energy metabolism in treating cardiovascular diseases over the past five years.
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Affiliation(s)
- Jie Li
- Department of Cardiology, Guang'anmen Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Xuan-Ke Guan
- Department of Cardiology, Guang'anmen Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Ru-Xiu Liu
- Department of Cardiology, Guang'anmen Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100053, China.
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Salvianolic acid B as an anti-emphysema agent I: In vitro stimulation of lung cell proliferation and migration, and protection against lung cell death, and in vivo lung STAT3 activation and VEGF elevation. Pulm Pharmacol Ther 2018; 53:107-115. [PMID: 30291890 DOI: 10.1016/j.pupt.2018.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/17/2018] [Accepted: 10/01/2018] [Indexed: 12/30/2022]
Abstract
Emphysema causes progressive and life-threatening alveolar structural destruction/loss, yet remains irreversible and incurable to date. Impaired vascular endothelial growth factor (VEGF) signaling has been proposed as a new pathogenic mechanism, and if so, VEGF recovery may enable reversal of emphysema. Thus, we hypothesized that salvianolic acid B (Sal-B), a polyphenol in traditional Chinese herbal danshen, is an alveolar structural recovery agent for emphysema by virtue of VEGF stimulation/elevation via activation of Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3), as stimulating lung cell proliferation and migration, and protecting against lung cell death. Using in vitro human lung microvascular endothelial (HMVEC-L) and alveolar epithelial (A549) cell systems, Sal-B was examined for 1) stimulation of cell proliferation by the MTT and BrdU assays; 2) promotion of cell migration by the scratch wound closure assay; 3) protection against emphysema-like induced cell death by the trypan blue exclusion and flow cytometry assays; and 4) mechanistic involvement of JAK2/STAT3/VEGF in these activities. Sal-B was also spray-dosed to the lungs of healthy rats for two weeks to verify the lung's STAT3 activation and VEGF elevation by western blot, as well as the absence of functional and morphological abnormalities. All the in vitro cell-based activities were concentration-dependent. At 25 μM, Sal-B 1) stimulated cell proliferation by 1.4-2.6-fold; 2) promoted migratory cell wound closure by 1.5-1.7-fold; and 3) protected against cell death induced with H2O2 (oxidative stress) and SU5416 (VEGF receptor blockade) by 49-86%. JAK2 and STAT3 inhibitors and VEGF receptor antagonist each opposed these Sal-B's activities by over 65%, suggesting the mechanistic involvement of JAK2/STAT3 activation and VEGF stimulation/elevation. In rats, Sal-B at 0.2 mg/kg enabled 1.9 and 1.5-fold increased STAT3 phosphorylation and VEGF elevation in the lungs, respectively, while causing no functional and morphological abnormalities. Hence, Sal-B was projected to be a new class of anti-emphysema agent capable of reversing alveolar structural destruction/loss via JAK2/STAT3/VEGF-dependent stimulation of lung cell proliferation and migration, and inhibition of induced lung cell death.
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Wang W, Hu W. Salvianolic acid B recovers cognitive deficits and angiogenesis in a cerebral small vessel disease rat model via the STAT3/VEGF signaling pathway. Mol Med Rep 2017; 17:3146-3151. [PMID: 29257241 DOI: 10.3892/mmr.2017.8203] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 07/21/2017] [Indexed: 11/06/2022] Open
Abstract
Salvianolic acid B is one of the key water‑soluble components of Salvia extract. It has been verified that salvianolic acid B possesses multiple pharmacological activities, it protects against myocardial infarction, however additionally improves injury of myocardial ischemia‑reperfusion. The present study, the possible effects of salvianolic acid B on cognitive deficits and angiogenesis in cerebral small vessel disease were investigated. Salvianolic acid B was identified to recover cognitive deficits and neurocytes, reduce inflammation, oxidative stress and neurocyte apoptosis (caspase‑3 and Bax protein expression) in cerebral small vessel disease rats. In addition, salvianolic acid B upregulated signal transducer and activator of transcription 3 (STAT3) phosphorylation protein expression, and induced vascular endothelial growth factor (VEGF) and VEGF receptor 2 protein expression in cerebral small vessel disease rats. In conclusion, the results demonstrated that salvianolic acid B recovers cognitive deficits and angiogenesis in the cerebral small vessel disease rat model via STAT3/VEGF signaling pathway.
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Affiliation(s)
- Wei Wang
- Department of Neurology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Wenli Hu
- Department of Neurology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, P.R. China
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