1
|
Imamoto N. Functional analysis of Hikeshi reveals physiological significance of nuclear Hsp70. Curr Opin Cell Biol 2024; 91:102426. [PMID: 39317134 DOI: 10.1016/j.ceb.2024.102426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 08/31/2024] [Accepted: 09/02/2024] [Indexed: 09/26/2024]
Abstract
Nucleocytoplasmic transport is a basic cellular reaction that plays an important role in regulating cell physiology in eukaryotic cells. Here we show that the identification of one nucleocytoplasmic transport pathway led to the notification of intracellular reaction that has not been acknowledged. Hikeshi was originally identified as a nuclear import carrier of heat stress-induced nuclear import of molecular chaperone Hsp70. We now know that Hikeshi mediates nuclear import of Hsp70 at a variety of different cellular conditions, such as at normal conditions, at proteotoxic conditions, during differentiation, and probably more. Recent studies gradually revealed the physiological significances of Hikeshi-mediated nuclear import of Hsp70.
Collapse
Affiliation(s)
- Naoko Imamoto
- Graduate School of Medical Safety Management, Jikei University of Health Care Sciences, 1-2-8 Miyahara, Yodogawa-ku, Osaka 532-0003, Japan.
| |
Collapse
|
2
|
Wei Liu, Wenyu Wang, Chenglong Tian, Ming-Zhong Sun, Shuqing Liu, and Qinlong Liu. Network pharmacology prediction to discover the potential pharmacological action mechanism of Rhizoma Dioscoreae for liver regeneration. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2024; 28:479-491. [PMID: 39198228 PMCID: PMC11362001 DOI: 10.4196/kjpp.2024.28.5.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/25/2024] [Accepted: 03/09/2024] [Indexed: 09/01/2024]
Abstract
Improving liver regeneration (LR) remains a medical issue, and there is currently a lack of safe and effective drugs for LR. Rhizoma Dioscoreae (SanYak, SY) is a traditional Chinese medicine. However, the underlying action mechanism of SY treatment for LR is yet to be fully elucidated. To explore the mechanism by which SY affects LR, we have conducted a series of methods for network pharmacological analysis, molecular docking, and in vivo experimental validation in mice. Overall, 9 compounds and 30 predicted target genes of SY were found to be associated with the therapeutic effects of LR. Compared with the model group, hematoxylin and eosin staining revealed that the mice with preoperative drug intervention possessed fewer postoperative hepatocyte bubbles and relatively regular morphology. Furthermore, the serum alanine transaminase and aspartate aminotransferase levels were reduced, immunohistochemistry revealed elevated proliferating cell nuclear antigen positivity rate, and Western blotting demonstrated that the phospho-protein kinase B (AKT)/AKT ratio was downregulated and that vascular endothelial growth factor A (VEGFA) expression levels were upregulated. This study explored dioscin, the main active ingredient of SY, and its potential therapeutic effects on LR. It repairs damaged liver following surgery and promotes liver cell proliferation. The action mechanism comprises reducing AKT phosphorylation levels and upregulating VEGFA expression levels. Thus, this study provides a new direction for further research on the mechanism of SY promoting LR.
Collapse
Affiliation(s)
- Wei Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian 116014, China
| | - Wenyu Wang
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital, Dalian Medical University, Dalian 116021, Liaoning, China
| | - Chenglong Tian
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital, Dalian Medical University, Dalian 116021, Liaoning, China
| | - Ming-Zhong Sun
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Shuqing Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - and Qinlong Liu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital, Dalian Medical University, Dalian 116021, Liaoning, China
| |
Collapse
|
3
|
Liu X, Shen D, Liu L, Peng Y, Lu Q. Diosgenin improves post-myocardial infarction cardiac function via HAND2-induced angiogenesis. Biochem Biophys Res Commun 2024; 712-713:149941. [PMID: 38643718 DOI: 10.1016/j.bbrc.2024.149941] [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: 03/31/2024] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 04/23/2024]
Abstract
While diosgenin has been demonstrated effective in various cardiovascular diseases, its specific impact on treating heart attacks remains unclear. Our research revealed that diosgenin significantly improved cardiac function in a myocardial infarction (MI) mouse model, reducing cardiac fibrosis and cell apoptosis while promoting angiogenesis. Mechanistically, diosgenin upregulated the Hand2 expression, promoting the proliferation and migration of endothelial cells under hypoxic conditions. Acting as a transcription factor, HAND2 activated the angiogenesis-related gene Aggf1. Conversely, silencing Hand2 inhibited the diosgenin-induced migration of hypoxic endothelial cells and angiogenesis. In summary, these findings provide new insights into the protective role of diosgenin in MI, validating its effect on angiogenic activity and providing a theoretical basis for clinical treatment strategies.
Collapse
Affiliation(s)
- Xuehua Liu
- Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, 210008, China; Cardiac Department, Sir Runrun Hospital Affiliated to Nanjing Medical University, Nanjing, 211166, China
| | - Dehong Shen
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Longfei Liu
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Yuzhu Peng
- Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, 210008, China.
| | - Qiulun Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
| |
Collapse
|
4
|
Yang X, Li K, Li M, Chen C, Yang X, Li J, Zhang H. Ultrashort wave diathermy inhibits pulmonary inflammation in mice with acute lung injury in a HSP70 independent way: a pilot study. Mol Biol Rep 2024; 51:750. [PMID: 38874700 DOI: 10.1007/s11033-024-09686-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/30/2024] [Indexed: 06/15/2024]
Abstract
BACKGROUND Acute lung injury (ALI) is a clinical syndrome characterized by pulmonary inflammation. Ultrashort wave diathermy (USWD) has been shown to be effective at in inhibiting ALI inflammation, although the underlying mechanism remains unclear. Previous studies have demonstrated that USWD generates a therapeutic thermal environment that aligns with the temperature required for heat shock protein 70 (HSP70), an endogenous protective substance. In this study, we examined the correlation between HSP70 and USWD in alleviating lung inflammation in ALI. METHODS Forty-eight male C57BL/6 mice were randomly divided into control, model, USWD intervention (LU) 1, 2, and 3, and USWD preintervention (UL) 1, 2, and 3 groups (n = 6 in each group). The mice were pretreated with LPS to induce ALI. The UL1, 2, and 3 groups received USWD treatment before LPS infusion, while the LU1, 2, and 3 groups received USWD treatment after LPS infusion. Lung function and structure, inflammatory factor levels and HSP70 protein expression levels were detected. RESULTS USWD effectively improved lung structure and function, and significantly reduced IL-1β, IL-10, TGF-β1, and TNF-α levels in both the USWD preintervention and intervention groups. However, HSP70 expression did not significantly differ across the experimental groups although the expression of TLR4 was significantly decreased, suggesting that USWD may have anti-inflammatory effects through multiple signaling pathways or that the experimental conditions should be restricted. CONCLUSIONS Both USWD intervention and preintervention effectively reduced the inflammatory response, alleviated lung injury symptoms, and played a protective role in LPS-pretreated ALI mice. HSP70 was potentially regulated by USWD in this process, but further studies are urgently needed to elucidate the correlation and mechanism.
Collapse
Affiliation(s)
- Xiao Yang
- Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, P.R. China
- Chengdu 363 Hospital affiliated to Southwest Medical University, Chengdu, 610000, P.R. China
| | - Kangxia Li
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, 200438, P.R. China
| | - Min Li
- Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, P.R. China
| | - Caitao Chen
- Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, P.R. China
| | - Xuezhi Yang
- Chengdu 363 Hospital affiliated to Southwest Medical University, Chengdu, 610000, P.R. China
| | - Jian Li
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, 200438, P.R. China.
- Department of Traditional Chinese Medicine, Changhai Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200433, P.R. China.
| | - Hong Zhang
- Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, P.R. China.
| |
Collapse
|
5
|
Zheng T, Jiang T, Huang Z, Ma H, Wang M. Role of traditional Chinese medicine monomers in cerebral ischemia/reperfusion injury:a review of the mechanism. Front Pharmacol 2023; 14:1220862. [PMID: 37654609 PMCID: PMC10467294 DOI: 10.3389/fphar.2023.1220862] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/04/2023] [Indexed: 09/02/2023] Open
Abstract
Ischemia/reperfusion (I/R) injury is a pathological process wherein reperfusion of an ischemic organ or tissue exacerbates the injury, posing a significant health threat and economic burden to patients and their families. I/R triggers a multitude of physiological and pathological events, such as inflammatory responses, oxidative stress, neuronal cell death, and disruption of the blood-brain barrier (BBB). Hence, the development of effective therapeutic strategies targeting the pathological processes resulting from I/R is crucial for the rehabilitation and long-term enhancement of the quality of life in patients with cerebral ischemia/reperfusion injury (CIRI). Traditional Chinese medicine (TCM) monomers refer to bioactive compounds extracted from Chinese herbal medicine, possessing anti-inflammatory and antioxidative effects, and the ability to modulate programmed cell death (PCD). TCM monomers have emerged as promising candidates for the treatment of CIRI and its subsequent complications. Preclinical studies have demonstrated that TCM monomers can enhance the recovery of neurological function following CIRI by mitigating oxidative stress, suppressing inflammatory responses, reducing neuronal cell death and functional impairment, as well as minimizing cerebral infarction volume. The neuroprotective effects of TCM monomers on CIRI have been extensively investigated, and a comprehensive understanding of their mechanisms can pave the way for novel approaches to I/R treatment. This review aims to update and summarize evidence of the protective effects of TCMs in CIRI, with a focus on their role in modulating oxidative stress, inflammation, PCD, glutamate excitotoxicity, Ca2+ overload, as well as promoting blood-brain barrier repairment and angiogenesis. The main objective is to underscore the significant contribution of TCM monomers in alleviating CIRI.
Collapse
Affiliation(s)
| | | | | | | | - Manxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| |
Collapse
|
6
|
Wang Z, Zhao S, Tao S, Hou G, Zhao F, Tan S, Meng Q. Dioscorea spp.: Bioactive Compounds and Potential for the Treatment of Inflammatory and Metabolic Diseases. Molecules 2023; 28:molecules28062878. [PMID: 36985850 PMCID: PMC10051580 DOI: 10.3390/molecules28062878] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
Dioscorea spp. belongs to the Dioscoreaceae family, known as "yams", and contains approximately 600 species with a wide distribution. It is a major food source for millions of people in tropical and subtropical regions. Dioscorea has great medicinal and therapeutic capabilities and is a potential source of bioactive substances for the prevention and treatment of many diseases. In recent years, increasing attention has been paid to the phytochemicals of Dioscorea, such as steroidal saponins, polyphenols, allantoin, and, in particular, polysaccharides and diosgenin. These bioactive compounds possess anti-inflammatory activity and are protective against a variety of inflammatory diseases, such as enteritis, arthritis, dermatitis, acute pancreatitis, and neuroinflammation. In addition, they play an important role in the prevention and treatment of metabolic diseases, including obesity, dyslipidemia, diabetes, and non-alcoholic fatty liver disease. Their mechanisms of action are related to the modulation of a number of key signaling pathways and molecular targets. This review mainly summarizes recent studies on the bioactive compounds of Dioscorea and its treatment of inflammatory and metabolic diseases, and highlights the underlying molecular mechanisms. In conclusion, Dioscorea is a promising source of bioactive components and has the potential to develop novel natural bioactive compounds for the prevention and treatment of inflammatory and metabolic diseases.
Collapse
Affiliation(s)
- Zhen Wang
- Key Laboratory of Molecular Pharmacology and Drug Evaluation, School of Pharmacy, Yantai University, Yantai 264005, China
| | - Shengnan Zhao
- Key Laboratory of Molecular Pharmacology and Drug Evaluation, School of Pharmacy, Yantai University, Yantai 264005, China
| | - Siyu Tao
- Physiology Group, Department of Basic and Applied Medical Sciences, Ghent University, 9000 Ghent, Belgium
| | - Guige Hou
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Fenglan Zhao
- Key Laboratory of Molecular Pharmacology and Drug Evaluation, School of Pharmacy, Yantai University, Yantai 264005, China
| | - Shenpeng Tan
- Key Laboratory of Molecular Pharmacology and Drug Evaluation, School of Pharmacy, Yantai University, Yantai 264005, China
| | - Qingguo Meng
- Key Laboratory of Molecular Pharmacology and Drug Evaluation, School of Pharmacy, Yantai University, Yantai 264005, China
| |
Collapse
|
7
|
The Signaling Pathways and Targets of Natural Compounds from Traditional Chinese Medicine in Treating Ischemic Stroke. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103099. [PMID: 35630576 PMCID: PMC9148018 DOI: 10.3390/molecules27103099] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022]
Abstract
Ischemic stroke (IS) is a common neurological disorder associated with high disability rates and mortality rates. At present, recombinant tissue plasminogen activator (r-tPA) is the only US(FDA)-approved drug for IS. However, due to the narrow therapeutic window and risk of intracerebral hemorrhage, r-tPA is currently used in less than 5% of stroke patients. Natural compounds have been widely used in the treatment of IS in China and have a wide range of therapeutic effects on IS by regulating multiple targets and signaling pathways. The keywords "ischemia stroke, traditional Chinese Medicine, Chinese herbal medicine, natural compounds" were used to search the relevant literature in PubMed and other databases over the past five years. The results showed that JAK/STAT, NF-κB, MAPK, Notch, Nrf2, and PI3K/Akt are the key pathways, and SIRT1, MMP9, TLR4, HIF-α are the key targets for the natural compounds from traditional Chinese medicine in treating IS. This study aims to update and summarize the signaling pathways and targets of natural compounds in the treatment of IS, and provide a base of information for the future development of effective treatments for IS.
Collapse
|
8
|
Effect of prior exposure to enriched environment on cellular apoptosis after experimental stroke. Mol Biol Rep 2022; 49:6541-6551. [PMID: 35507114 DOI: 10.1007/s11033-022-07494-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/20/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Growing evidence, including our previous studies, has demonstrated that an enriched environment (EE) after cerebral ischemia/reperfusion (I/R) injury improves neurofunctional recovery in rats. However, whether EE exposure prior to injury could play a neuroprotective role in stroke has seldom been investigated. In this study, we examined the neuroprotective effects of prior exposure to EE and investigated the potential anti-apoptotic effect in rats after cerebral I/R injury. METHODS AND RESULTS Rats were housed in EE or standard conditions (SC) for four weeks and then randomly assigned to receive 120 min of right middle cerebral occlusion (MCAO) or sham operation. Based on the housing environment and the procedure they underwent, the rats were divided into the following three groups: preischemic EE + MCAO (PIEE), preischemic SC + MCAO (PISC) and preischemic SC + sham-operated (sham). Forty-eight hours after the operation, the rats were subjected to a series of assessments. We found that prior exposure to EE improved functional outcomes, reduced infarct volume and attenuated histological damage. The apoptotic cell numbers in the ischemic penumbra cortex decreased in PIEE group, as did the p53, PUMA, Bax and AIF expression levels. The protein expression of Bcl-2 and HSP70 was increased in the PIEE group compared with the PISC group. PIEE treatment also significantly increased the BDNF level in the ischemic penumbra. In addition, inhibition of cell apoptosis and upregulation of BDNF expression levels were correlated with the improved functional recovery of MCAO rats. CONCLUSIONS These findings suggest that EE preconditioning inhibited cell apoptosis and upregulated BDNF expression in the penumbra of MCAO rats, which may contribute to neurofunctional recovery after stroke.
Collapse
|