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Tang Y, Wu X, Li J, Li Y, Xu X, Li G, Zhang P, Qin C, Wu LJ, Tang Z, Tian DS. The Emerging Role of Microglial Hv1 as a Target for Immunomodulation in Myelin Repair. Aging Dis 2024; 15:1176-1203. [PMID: 38029392 PMCID: PMC11081154 DOI: 10.14336/ad.2023.1107] [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] [Accepted: 11/07/2023] [Indexed: 12/01/2023] Open
Abstract
In the central nervous system (CNS), the myelin sheath ensures efficient interconnection between neurons and contributes to the regulation of the proper function of neuronal networks. The maintenance of myelin and the well-organized subtle process of myelin plasticity requires cooperation among myelin-forming cells, glial cells, and neural networks. The process of cooperation is fragile, and the balance is highly susceptible to disruption by microenvironment influences. Reactive microglia play a critical and complicated role in the demyelination and remyelination process. Recent studies have shown that the voltage-gated proton channel Hv1 is selectively expressed in microglia in CNS, which regulates intracellular pH and is involved in the production of reactive oxygen species, underlying multifaceted roles in maintaining microglia function. This paper begins by examining the molecular mechanisms of demyelination and emphasizes the crucial role of the microenvironment in demyelination. It focuses specifically on the role of Hv1 in myelin repair and its therapeutic potential in CNS demyelinating diseases.
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Affiliation(s)
- Yingxin Tang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Xuan Wu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Jiarui Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Yuanwei Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Xiaoxiao Xu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Gaigai Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ping Zhang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Chuan Qin
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Long-Jun Wu
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Zhouping Tang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Dai-Shi Tian
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Zuo HJ, Wang PX, Ren XQ, Shi HL, Shi JS, Guo T, Wan C, Li JJ. Gastrodin Regulates PI3K/AKT-Sirt3 Signaling Pathway and Proinflammatory Mediators in Activated Microglia. Mol Neurobiol 2024; 61:2728-2744. [PMID: 37930585 DOI: 10.1007/s12035-023-03743-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/25/2023] [Indexed: 11/07/2023]
Abstract
Activated microglia and their mediated inflammatory responses play an important role in the pathogenesis of hypoxic-ischemic brain damage (HIBD). Therefore, regulating microglia activation is considered a potential therapeutic strategy. The neuroprotective effects of gastrodin were evaluated in HIBD model mice, and in oxygen glucose deprivation (OGD)-treated and lipopolysaccharide (LPS)activated BV-2 microglia cells. The potential molecular mechanism was investigated using western blotting, immunofluorescence labeling, quantitative realtime reverse transcriptase polymerase chain reaction, and flow cytometry. Herein, we found that PI3K/AKT signaling can regulate Sirt3 in activated microglia, but not reciprocally. And gastrodin exerts anti-inflammatory and antiapoptotic effects through the PI3K/AKT-Sirt3 signaling pathway. In addition, gastrodin could promote FOXO3a phosphorylation, and inhibit ROS production in LPSactivated BV-2 microglia. Moreover, the level P-FOXO3a decreased significantly in Sirt3-siRNA group. However, there was no significant change after gastrodin and siRNA combination treatment. Notably, gastrodin might also affect the production of ROS in activated microglia by regulating the level of P-FOXO3a via Sirt3. Together, this study highlighted the neuroprotective role of PI3K/AKT-Sirt3 axis in HIBD, and the anti-inflammatory, anti-apoptotic, and anti-oxidative stress effects of gastrodin on HIBD.
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Affiliation(s)
- Han-Jun Zuo
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China
| | - Peng-Xiang Wang
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China
| | - Xue-Qi Ren
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China
| | - Hao-Long Shi
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China
| | - Jin-Sha Shi
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China
| | - Tao Guo
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China
| | - Cheng Wan
- Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650031, China
| | - Juan-Juan Li
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, 1168 West Chunrong Road, Kunming, Yunnan, 650500, China.
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3
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Wang J, Gao Y, Yuan Y, Wang H, Wang Z, Zhang X. Th17 Cells and IL-17A in Ischemic Stroke. Mol Neurobiol 2024; 61:2411-2429. [PMID: 37884768 DOI: 10.1007/s12035-023-03723-y] [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: 04/16/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023]
Abstract
The neurological injury and repair mechanisms after ischemic stroke are complex. The inflammatory response is present throughout stroke onset and functional recovery, in which CD4 + T helper(Th) cells play a non-negligible role. Th17 cells, differentiated from CD4 + Th cells, are regulated by various extracellular signals, transcription factors, RNA, and post-translational modifications. Th17 cells specifically produce interleukin-17A(IL-17A), which has been reported to have pro-inflammatory effects in many studies. Recently, experimental researches showed that Th17 cells and IL-17A play an important role in promoting stroke pathogenesis (atherosclerosis), inducing secondary damage after stroke, and regulating post-stroke repair. This makes Th17 and IL-17A a possible target for the treatment of stroke. In this paper, we review the mechanism of action of Th17 cells and IL-17A in ischemic stroke and the progress of research on targeted therapy.
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Affiliation(s)
- Jingjing Wang
- Department of Neurology, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, Hebei, China
| | - Yuxiao Gao
- Department of Neurology, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, Hebei, China
| | - Yujia Yuan
- Department of Neurology, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, Hebei, China
| | - Huan Wang
- Department of Neurology, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, Hebei, China
| | - Zhao Wang
- Department of Neurology, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, Hebei, China
| | - Xiangjian Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, Hebei, China.
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, 050000, Hebei, China.
- Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, 050000, Hebei, China.
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Lee HG, Hur J, Won JP, Seo HG. Ginseng (Panax ginseng) leaf extract modulates the expression of heme oxygenase-1 to attenuate osteoclast differentiation. Fitoterapia 2024; 173:105831. [PMID: 38278423 DOI: 10.1016/j.fitote.2024.105831] [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: 09/12/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 01/28/2024]
Abstract
Osteoporosis is an aging disease characterized by an imbalance between bone formation and resorption. However, drugs that inhibit bone resorption have various adverse effects. Ginseng (Panax ginseng), a prominent herbal medicine in East Asia for >2000 years, is renowned for its manifold beneficial properties, including antioxidant, anti-cancer, anti-diabetic, and anti-adipogenic activities. Despite its long history of use, the pharmacological functions of ginseng leaves are not yet fully comprehended. In this study, we evaluated the potential effects of ginseng leaf extract (GLE) on receptor activator of nuclear factor κB ligand (RANKL)-induced osteoclast differentiation in RAW264.7 macrophage cells. Tartrate-resistant acid phosphatase (TRAP) staining revealed that GLE had significant anti-osteoclastogenic activity. GLE significantly reduced mRNA levels of osteoclast differentiation markers including TRAP, nuclear factor of activated T cell cytoplasmic 1, and cathepsin K. It also suppressed the production of reactive oxygen species (ROS) and secretion of high mobility group box-1 (HMGB1) in RANKL-treated RAW264.7 cells. In addition, GLE upregulated dose- and time-dependently the expression of heme oxygenase-1 (HO-1), eventually suppressing ROS production and HMGB1 secretion. This effects of GLE were significantly reversed by Tin Protoporphyrin IX dichloride, an inhibitor of HO-1, and HO-1 shRNA, indicating that HO-1 potently inhibits RANKL-induced osteoclast differentiation by inhibiting ROS production and HMGB1 secretion. Taken together, these observations suggest that GLE could have therapeutic potential as a natural product-derived medicine for the treatment of bone disorders.
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Affiliation(s)
- Hyuk Gyoon Lee
- Department of Animal Food Resources, College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jinwoo Hur
- Department of Animal Food Resources, College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jun Pil Won
- Department of Animal Food Resources, College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Han Geuk Seo
- Department of Animal Food Resources, College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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5
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Wang H, Tang H, Yuan S, Liang C, Li Y, Zhu S, Chen K. IL-17A deficiency inhibits lung cancer-induced osteoclastogenesis by promoting apoptosis of osteoclast precursor cells. PLoS One 2024; 19:e0299028. [PMID: 38394046 PMCID: PMC10889641 DOI: 10.1371/journal.pone.0299028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Osteoclasts are crucial in the events leading to bone metastasis of lung cancer. Interleukin-17A (IL-17A) affects osteogenesis by regulating the survival of osteoclast precursors (OCPs) and is enriched in lung cancer cells. However, how factors derived from tumor cells that metastasize to bone affect osteoclastogenesis remains poorly understood. We examined whether IL-17A derived from lung cancer cells affects osteoclast differentiation by regulating OCP apoptosis. IL-17A expression was inhibited in A549 non-small cell lung cancer cells using RNA interference. Compared with conditioned medium (CM) from A549 cells (A549-CM), CM from IL-17A-deficient A549 cells (A549-si-CM) suppressed osteoclastogenesis. The mRNA expression of osteoclast-specific genes was downregulated following A549-si-CM treatment. Furthermore, A549-si-CM promoted osteoclast precursor apoptosis at an early stage of osteoclastogenesis, which was related to the promotion of caspase-3 expression by A549-si-CM during osteoclast differentiation. In vivo experiments also showed that inhibition of IL-17A expression in A549 cells reduced osteoclast activation and bone tissue destruction. Collectively, our results indicate that IL-17A deficiency inhibits lung cancer-induced osteoclast differentiation by promoting apoptosis of osteoclast precursors in the early stage of osteoclast formation and that IL-17A is a potential therapeutic target for cancer-associated bone resorption in patients with lung cancer.
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Affiliation(s)
- Hongkai Wang
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
- Guangxi Key Laboratory of Metabolic Reprogramming and Intelligent Medical Engineering for Chronic Diseases, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Hao Tang
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
- Guangxi Key Laboratory of Metabolic Reprogramming and Intelligent Medical Engineering for Chronic Diseases, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Shujie Yuan
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Chuntao Liang
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Yuanxin Li
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Shida Zhu
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Kai Chen
- Department of Orthopedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
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Zhu X, Dou Y, Lin Y, Chu G, Wang J, Ma L. HMGB1 regulates Th17 cell differentiation and function in patients with psoriasis. Immun Inflamm Dis 2024; 12:e1205. [PMID: 38414294 PMCID: PMC10899799 DOI: 10.1002/iid3.1205] [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: 09/07/2023] [Revised: 12/13/2023] [Accepted: 02/15/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND Psoriasis is an immune-mediated chronic inflammatory skin disease, in which T helper 17 (Th17) cells and its effective cytokine interleukin (IL)-17A play a pivotal pathogenic role. High mobility group box 1 (HMGB1) is an important proinflammatory cytokine, which has been confirmed to be highly expressed in the peripheral circulation and epidermis tissues of psoriasis patients. The regulatory effect of HMGB1 on IL-17A expression and function has been reported in some inflammatory and autoimmune diseases by the HMGB1-Toll-like receptor 4 (TLR4)-interleukin (IL)-23-IL-17A pathway. While, in the pathological environment of psoriasis, whether HMGB1 can exert the regulatory effect on IL-17A is not clear. OBJECTIVE We aimed to evaluate the role of HMGB1-TLR4-IL-23-IL-17A pathway in the pathogenesis of psoriasis and explore the possible regulatory mechanism of HMGB1 on Th17 cell differentiation. METHODS Serum levels of HMGB1, TLR4, IL-23, and IL-17A were quantified in 50 patients with moderate-to-severe plaque psoriasis and 30 healthy controls. Peripheral blood mononuclear cells were acquired from 10 severe psoriasis patients and administrated by different concentrations of recombinant-HMGB1 (rHMGB1) to detect the Th17 cell percentage, mRNA and protein levels of TLR4, IL-23, IL-17A and retinoid-related orphan receptor γt (RORγt). RESULTS The serum levels of HMGB1, TLR4, IL-23, and IL-17A in psoriasis patients were significantly higher than healthy controls, especially in severe patients, and positively correlated with the severity index. There were also positive correlations between every two detected indicators of HMGB1, TLR4, IL-23, and IL-17A. In vitro study, rHMGB1 can promote the elevated expression of Th17 cell percentage as well as TLR4, IL-23, IL-17A, and RORγt in a dose-dependent manner. CONCLUSION HMGB1 can contribute to the pathogenesis of psoriasis by regulating Th17 cell differentiation through HMGB1-TLR4-IL-23-RORγt pathway, then promotes IL-17A production and aggravates inflammation process. Targeting HMGB1 may be a possible potential candidate for the immunotherapy of psoriasis.
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Affiliation(s)
- Xiaofeng Zhu
- Department of DermatologyBinzhou Medical University HospitalBinzhouChina
| | - Yue Dou
- Department of DermatologyBinzhou Medical University HospitalBinzhouChina
| | - Yawen Lin
- Department of DermatologyBinzhou Medical University HospitalBinzhouChina
| | - Gaoping Chu
- Department of DermatologyBinzhou Medical University HospitalBinzhouChina
| | - Jing Wang
- Department of DermatologyBinzhou Medical University HospitalBinzhouChina
| | - Lei Ma
- Department of DermatologyBinzhou Medical University HospitalBinzhouChina
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7
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Yeo EJ, Shin MJ, Youn GS, Park JH, Yeo HJ, Kwon HJ, Lee LR, Kim NY, Kwon SY, Kim SM, Lee J, Lee KW, Lee CH, Cho YJ, Kwon OS, Kim DW, Jung HY, Eum WS, Choi SY. Tat-RAN attenuates brain ischemic injury in hippocampal HT-22 cells and ischemia animal model. Neurochem Int 2023; 167:105538. [PMID: 37207854 DOI: 10.1016/j.neuint.2023.105538] [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: 02/16/2023] [Revised: 04/30/2023] [Accepted: 05/07/2023] [Indexed: 05/21/2023]
Abstract
Oxidative stress plays a key role in the pathogenesis of neuronal injury, including ischemia. Ras-related nuclear protein (RAN), a member of the Ras superfamily, involves in a variety of biological roles, such as cell division, proliferation, and signal transduction. Although RAN reveals antioxidant effect, its precise neuroprotective mechanisms are still unclear. Therefore, we investigated the effects of RAN on HT-22 cell which were exposed to H2O2-induced oxidative stress and ischemia animal model by using the cell permeable Tat-RAN fusion protein. We showed that Tat-RAN transduced into HT-22 cells, and markedly inhibited cell death, DNA fragmentation, and reactive oxygen species (ROS) generation under oxidative stress. This fusion protein also controlled cellular signaling pathways, including mitogen-activated protein kinases (MAPKs), NF-κB, and apoptosis (Caspase-3, p53, Bax and Bcl-2). In the cerebral forebrain ischemia animal model, Tat-RAN significantly inhibited both neuronal cell death, and astrocyte and microglia activation. These results indicate that RAN significantly protects against hippocampal neuronal cell death, suggesting Tat-RAN will help to develop the therapies for neuronal brain diseases including ischemic injury.
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Affiliation(s)
- Eun Ji Yeo
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Min Jea Shin
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Gi Soo Youn
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Jung Hwan Park
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Hyeon Ji Yeo
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Hyun Jung Kwon
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Lee Re Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Na Yeon Kim
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Su Yeon Kwon
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Su Min Kim
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Jaehak Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Keun Wook Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Chan Hee Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Yong-Jun Cho
- Department of Neurosurgery, Hallym University Medical Center, Chuncheon, 24253, South Korea
| | - Oh-Shin Kwon
- School of Life Sciences, College of Natural Sciences Kyungpook National University, Taegu, 41566, South Korea
| | - Dae Won Kim
- Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457, South Korea
| | - Hyo Young Jung
- Department of Veterinary Medicine & Institute of Veterinary Science, Chungnam National University, Daejeon, 34134, South Korea
| | - Won Sik Eum
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea.
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea.
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Lin SP, Bu J, Ye S, Xie Q, Wei JX, Yin X, Mei F, Lin PY, Chen XH. Activated AMPK-mediated glucose uptake and mitochondrial dysfunction is critically involved in the glutamate-induced oxidative injury in HT22 cell. Tissue Cell 2023; 81:102039. [PMID: 36805774 DOI: 10.1016/j.tice.2023.102039] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/09/2023] [Accepted: 02/13/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Accumulation of glutamate damages neurons via the reactive oxygen species (ROS) injury, which was involved in the development of neurodegenerative diseases. However, the mechanism of neuronal oxidative stress damage caused by glutamate and the intervention targets still needs to be further studied. This study explored whether 5' adenosine monophosphate-activated protein kinase (AMPK)-induced glucose metabolic and mitochondrial dysfunction were related to glutamate-dependent ROS injury of the neuron. METHODS Neuronal oxidative stress injury was induced by glutamate treatment in HT-22 cells. Western blotting was used to evaluate the phosphorylation of the AMPK. The XF24 Flux Analyzer was used to measure the effect of glutamate and Compound C (a well-known pharmacological inhibitor of AMPK phosphorylation) on the cellular oxygen consumption rate (OCR) of HT-22 cells. Glucose uptake, intracellular ROS, mitochondrial potential, apoptosis and cell viability were quantified using biochemical assays. RESULTS Glutamate caused the phosphorylation of AMPK and subsequently promoted the glucose uptake. Furthermore, AMPK-mediated glucose uptake enhanced OCR and increased the intracellular ROS levels in neurons. The pharmacological inhibition of AMPK phosphorylation by Compound C attenuated glutamate-induced toxicity in HT22 cells by regulating the glucose uptake/mitochondrial respiration/ROS pathway. CONCLUSIONS The AMPK phosphorylation/glucose uptake/mitochondrial respiration/ROS pathway was involved in glutamate-induced excitotoxic injury in HT22 cells. The inhibition of AMPK phosphorylation may be a potential target for the development of therapeutic agents for treating the glutamate-induced neurotoxicity.
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Affiliation(s)
- Shao-Peng Lin
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Jingyi Bu
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Shan Ye
- Department of Geriatrics, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Qiangda Xie
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Jue-Xian Wei
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Xiaofang Yin
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Fen Mei
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Pei-Yi Lin
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Xiao-Hui Chen
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, PR China.
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Xu XJ, Ge QQ, Yang MS, Zhuang Y, Zhang B, Dong JQ, Niu F, Li H, Liu BY. Neutrophil-derived interleukin-17A participates in neuroinflammation induced by traumatic brain injury. Neural Regen Res 2022; 18:1046-1051. [PMID: 36254991 PMCID: PMC9827773 DOI: 10.4103/1673-5374.355767] [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] [Indexed: 01/11/2023] Open
Abstract
After brain injury, infiltration and abnormal activation of neutrophils damages brain tissue and worsens inflammation, but the mediators that connect activated neutrophils with neuroinflammation have not yet been fully clarified. To identify regulators of neutrophil-mediated neuroinflammation after traumatic brain injury, a mouse model of traumatic brain injury was established by controlled cortical impact. At 7 days post-injury (sub-acute phase), genome-wide transcriptomic data showed that interleukin 17A-associated signaling pathways were markedly upregulated, suggesting that interleukin 17A may be involved in neuroinflammation. Double immunofluorescence staining showed that interleukin 17A was largely secreted by neutrophils rather than by glial cells and neurons. Furthermore, nuclear factor-kappaB and Stat3, both of which are important effectors in interleukin 17A-mediated proinflammatory responses, were significantly activated. Collectively, our findings suggest that neutrophil-derived interleukin 17A participates in neutrophil-mediated neuroinflammation during the subacute phase of traumatic brain injury. Therefore, interleukin 17A may be a promising therapeutic target for traumatic brain injury.
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Affiliation(s)
- Xiao-Jian Xu
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Qian-Qian Ge
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Meng-Shi Yang
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yuan Zhuang
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Bin Zhang
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jin-Qian Dong
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Fei Niu
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Hao Li
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Bai-Yun Liu
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China,Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China,Nerve Injury and Repair Center of Beijing Institute for Brain Disorders, Beijing, China,China National Clinical Research Center for Neurological Diseases, Beijing, China,Correspondence to: Bai-Yun Liu, .
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10
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Maltz RM, Marte-Ortiz P, Rajasekera TA, Loman BR, Gur TL, Bailey MT. Stressor-Induced Increases in Circulating, but Not Colonic, Cytokines Are Related to Anxiety-like Behavior and Hippocampal Inflammation in a Murine Colitis Model. Int J Mol Sci 2022; 23:ijms23042000. [PMID: 35216112 PMCID: PMC8877477 DOI: 10.3390/ijms23042000] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/31/2022] [Accepted: 02/08/2022] [Indexed: 01/27/2023] Open
Abstract
Stressor exposure increases colonic inflammation. Because inflammation leads to anxiety-like behavior, we tested whether stressor exposure in mice recovering from dextran-sulfate-sodium (DSS)-induced colitis enhances anxiety-like behavior. Mice received 2% DSS for five consecutive days prior to being exposed to a social-disruption (SDR) stressor (or being left undisturbed). After stressor exposure, their behavior was tested and colitis was assessed via histopathology and via inflammatory-cytokine measurement in the serum and colon. Cytokine and chemokine mRNA levels in the colon, mesenteric lymph nodes (MLNs), hippocampus, and amygdala were measured with RT-PCR. SDR increased anxiety-like behaviors, which correlated with serum and hippocampal IL-17A. The stressor also reduced IL-1β, CCL2, and iNOS in the colonic tissue, but increased iNOS, IFNγ, IL-17A, and TNFα in the MLNs. A network analysis indicated that reductions in colonic iNOS were related to elevated MLN iNOS and IFNγ. These inflammatory markers were related to serum and hippocampal IL-17A and associated with anxiety-like behavior. Our data suggest that iNOS may protect against extra-colonic inflammation, and when suppressed during stress it is associated with elevated MLN IFNγ, which may coordinate gut-to-brain inflammation. Our data point to hippocampal IL-17A as a key correlate of anxiety-like behavior.
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Affiliation(s)
- Ross M. Maltz
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Nationwide Children’s Hospital, Columbus, OH 43205, USA
- Department of Pediatrics, The Ohio State Wexner Medical Center, Columbus, OH 43210, USA;
- The Center for Microbial Pathogenesis, The Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA; (P.M.-O.); (B.R.L.)
- Oral and Gastrointestinal Microbiology Research Affinity Group, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA
- Correspondence: ; Tel.: +1-614-722-5116; Fax: +1-614-722-2979
| | - Pedro Marte-Ortiz
- The Center for Microbial Pathogenesis, The Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA; (P.M.-O.); (B.R.L.)
| | - Therese A. Rajasekera
- Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (T.A.R.); (T.L.G.)
- Department of Psychiatry & Behavioral Health, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Brett R. Loman
- The Center for Microbial Pathogenesis, The Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA; (P.M.-O.); (B.R.L.)
| | - Tamar L. Gur
- Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (T.A.R.); (T.L.G.)
- Department of Psychiatry & Behavioral Health, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Michael T. Bailey
- Department of Pediatrics, The Ohio State Wexner Medical Center, Columbus, OH 43210, USA;
- The Center for Microbial Pathogenesis, The Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA; (P.M.-O.); (B.R.L.)
- Oral and Gastrointestinal Microbiology Research Affinity Group, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA
- Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (T.A.R.); (T.L.G.)
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11
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Chen R, Kang R, Tang D. The mechanism of HMGB1 secretion and release. Exp Mol Med 2022; 54:91-102. [PMID: 35217834 PMCID: PMC8894452 DOI: 10.1038/s12276-022-00736-w] [Citation(s) in RCA: 231] [Impact Index Per Article: 115.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/13/2021] [Accepted: 11/04/2021] [Indexed: 02/08/2023] Open
Abstract
High mobility group box 1 (HMGB1) is a nonhistone nuclear protein that has multiple functions according to its subcellular location. In the nucleus, HMGB1 is a DNA chaperone that maintains the structure and function of chromosomes. In the cytoplasm, HMGB1 can promote autophagy by binding to BECN1 protein. After its active secretion or passive release, extracellular HMGB1 usually acts as a damage-associated molecular pattern (DAMP) molecule, regulating inflammation and immune responses through different receptors or direct uptake. The secretion and release of HMGB1 is fine-tuned by a variety of factors, including its posttranslational modification (e.g., acetylation, ADP-ribosylation, phosphorylation, and methylation) and the molecular machinery of cell death (e.g., apoptosis, pyroptosis, necroptosis, alkaliptosis, and ferroptosis). In this minireview, we introduce the basic structure and function of HMGB1 and focus on the regulatory mechanism of HMGB1 secretion and release. Understanding these topics may help us develop new HMGB1-targeted drugs for various conditions, especially inflammatory diseases and tissue damage. A nuclear protein that gets released after cell death or is actively secreted by immune cells offers a promising therapeutic target for treating diseases linked to excessive inflammation. Daolin Tang from the University of Texas Southwestern Medical Center in Dallas, USA, and colleagues review how cellular stresses can trigger the accumulation of HMGB1, a type of alarm signal protein that promotes the recruitment and activation of inflammation-promoting immune cells. The researchers discuss various mechanisms that drive both passive and active release of HMGB1 into the space around cells. These processes, which include enzymatic modifications of the HMGB1 protein, cell–cell interactions and molecular pathways of cell death, could be targeted by drugs to lessen tissue damage and inflammatory disease caused by HMGB1-induced immune responses
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Affiliation(s)
- Ruochan Chen
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China. .,Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA.
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12
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Babu M, Singh N, Datta A. In Vitro Oxygen Glucose Deprivation Model of Ischemic Stroke: A Proteomics-Driven Systems Biological Perspective. Mol Neurobiol 2022; 59:2363-2377. [PMID: 35080759 DOI: 10.1007/s12035-022-02745-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/11/2022] [Indexed: 01/17/2023]
Abstract
Oxygen glucose deprivation (OGD) of brain cells is the commonest in vitro model of ischemic stroke that is used extensively for basic and preclinical stroke research. Protein mass spectrometry is one of the most promising and rapidly evolving technologies in biomedical research. A systems-level understanding of cell-type-specific responses to oxygen and glucose deprivation without systemic influence is a prerequisite to delineate the response of the neurovascular unit following ischemic stroke. In this systematic review, we summarize the proteomics studies done on different OGD models. These studies have followed an expression or interaction proteomics approach. They have been primarily used to understand the cellular pathophysiology of ischemia-reperfusion injury or to assess the efficacy of interventions as potential treatment options. We compile the limitations of OGD model and downstream proteomics experiment. We further show that despite having limitations, several proteins shortlisted as altered in in vitro OGD-proteomics studies showed comparable regulation in ischemic stroke patients. This showcases the translational potential of this approach for therapeutic target and biomarker discovery. We next discuss the approaches that can be adopted for cell-type-specific validation of OGD-proteomics results in the future. Finally, we briefly present the research questions that can be addressed by OGD-proteomics studies using emerging techniques of protein mass spectrometry. We have also created a web resource compiling information from OGD-proteomics studies to facilitate data sharing for community usage. This review intends to encourage preclinical stroke community to adopt a hypothesis-free proteomics approach to understand cell-type-specific responses following ischemic stroke.
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Affiliation(s)
- Manju Babu
- Laboratory of Translational Neuroscience, Division of Neuroscience, Yenepoya Research Center, Yenepoya (Deemed to be University), University Road, Deralakatte, Mangalore, 575018, Karnataka, India
| | - Nikhil Singh
- Laboratory of Translational Neuroscience, Division of Neuroscience, Yenepoya Research Center, Yenepoya (Deemed to be University), University Road, Deralakatte, Mangalore, 575018, Karnataka, India
| | - Arnab Datta
- Laboratory of Translational Neuroscience, Division of Neuroscience, Yenepoya Research Center, Yenepoya (Deemed to be University), University Road, Deralakatte, Mangalore, 575018, Karnataka, India.
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13
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Ju H, Liu C, Zhang G, Xu C, Wang H, Fan H. Neuroprotective potential of nuclear factor erythroid 2-related factor 2 (Nrf2)/antioxidant response element signaling modulator cucurbitacin I upon glucose and oxygen deprivation/reperfusion (OGD/RP). Hum Exp Toxicol 2022; 41:9603271221104450. [PMID: 35632987 DOI: 10.1177/09603271221104450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study aimed to investigate the inhibitory effect and mechanism of Cucurbitacin I (Cu I) on apoptosis, oxidative stress, and mitophagy in PC12 cells with glucose and oxygen deprivation/reperfusion (OGD/RP) injury. OGD/RP cell injury model was established by gas anoxic cell incubator and glucose-free medium. The cells were divided into the control group, OGD/RP group, OGD/RP + Cu I group, and OGD/RP + Cu I + 2 µM nuclear factor erythroid 2-related factor 2 (Nrf2) inhibitor ML385 group. The results showed that apoptotic rate and reactive oxygen species (ROS) production were significantly increased in OGD/RP group, which were reversed by Cu I pretreatment. Meanwhile, western blot analysis proved that Cu I inhibited OGD/RP-induced mitophagy, manifested as the decreased expression of PTEN-induced kinase 1 (PINK1) and parkin RBR E3 ubiquitin-protein ligase (Parkin), and light chain 3 (LC3) Ⅱ∕LC3 I, as well as the increased expression of P62. Furthermore, immunofluorescence (IF) staining showed that Cu I reduced the co-localized puncta of LC3 with TOM20 in OGD/RP-induced PC12 cells. Similarly, transmission electron microscope finding is consistent with the IF results. Mechanically, after Cu I and OGD/RP treatments, nuclear Nrf2 expression and the levels of downstream target genes were significantly upregulated compared with OGD/RP alone treatment. Nrf2 inhibition reversed the protective effects of Cu I on OGD/RP-induced injury in PC12 cells. The present study provides evidence of the neuroprotective effect of Cu I unraveling its potential as a potential therapeutic candidate for the treatment of ischemic stroke.
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Affiliation(s)
- Hu Ju
- Department of Neurosurgery, Qinghai University Affiliated Hospital, Chengxi District, Xining, Qinghai, China
| | - Chuanchuan Liu
- Key Laboratory of Hydatid Research, Qinghai University Affiliated Hospital, Qinghai Province Key Laboratory of Hydatid Disease Research, Chengxi District, Xining, Qinghai, China
| | - Guanghua Zhang
- Department of Neurosurgery, Qinghai University Affiliated Hospital, Chengxi District, Xining, Qinghai, China
| | - Changlin Xu
- Department of Neurosurgery, Qinghai University Affiliated Hospital, Chengxi District, Xining, Qinghai, China
| | - Hu Wang
- 599265Health Commission of Qinghai Province, Chengxi District, Xining, Qinghai, China
| | - Haining Fan
- Department of Hepatopancreatobiliary Surgery, Qinghai University Affiliated Hospital, Qinghai Province Key Laboratory of Hydatid Disease Research, Chengxi District, Xining, Qinghai, China
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14
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Sun B, Ying S, Ma Q, Li H, Li J, Song J. Metformin ameliorates HMGB1-mediated oxidative stress through mTOR pathway in experimental periodontitis. Genes Dis 2021; 10:542-553. [DOI: 10.1016/j.gendis.2021.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/08/2021] [Accepted: 06/03/2021] [Indexed: 12/26/2022] Open
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15
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Khaw YM, Majid D, Oh S, Kang E, Inoue M. Early-life-trauma triggers interferon-β resistance and neurodegeneration in a multiple sclerosis model via downregulated β1-adrenergic signaling. Nat Commun 2021; 12:105. [PMID: 33397973 PMCID: PMC7782805 DOI: 10.1038/s41467-020-20302-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 11/17/2020] [Indexed: 01/29/2023] Open
Abstract
Environmental triggers have important functions in multiple sclerosis (MS) susceptibility, phenotype, and trajectory. Exposure to early life trauma (ELT) has been associated with higher relapse rates in MS patients; however, the underlying mechanisms are not well-defined. Here we show ELT induces mechanistic and phenotypical alterations during experimental autoimmune encephalitis (EAE). ELT sustains downregulation of immune cell adrenergic receptors, which can be attributed to chronic norepinephrine circulation. ELT-subjected mice exhibit interferon-β resistance and neurodegeneration driven by lymphotoxin and CXCR2 involvement. These phenotypic changes are observed in control EAE mice treated with β1 adrenergic receptor antagonist. Conversely, β1 adrenergic receptor agonist treatment to ELT mice abrogates phenotype changes via restoration of immune cell β1 adrenergic receptor function. Our results indicate that ELT alters EAE phenotype via downregulation of β1 adrenergic signaling in immune cells. These results have implications for the effect of environmental factors in provoking disease heterogeneity and might enable prediction of long-term outcomes in MS.
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Affiliation(s)
- Yee Ming Khaw
- University of Illinois at Urbana-Champaign Department of Comparative Biosciences, 2001 South Lincoln Avenue, Urbana, IL, 61802, USA
- University of Illinois at Urbana-Champaign Neuroscience Program, 405 North Matthews Avenue, Urbana, IL, 61801, USA
| | - Danish Majid
- University of Illinois at Urbana-Champaign Department of Comparative Biosciences, 2001 South Lincoln Avenue, Urbana, IL, 61802, USA
- University of Illinois at Urbana-Champaign School of Molecular and Cell Biology, 407 South Goodwin Avenue, Urbana, IL, 61801, USA
| | - Sungjong Oh
- University of Illinois at Urbana-Champaign Department of Comparative Biosciences, 2001 South Lincoln Avenue, Urbana, IL, 61802, USA
- University of Illinois at Urbana-Champaign School of Molecular and Cell Biology, 407 South Goodwin Avenue, Urbana, IL, 61801, USA
| | - Eunjoo Kang
- University of Illinois at Urbana-Champaign Department of Comparative Biosciences, 2001 South Lincoln Avenue, Urbana, IL, 61802, USA
- University of Illinois at Urbana-Champaign Neuroscience Program, 405 North Matthews Avenue, Urbana, IL, 61801, USA
| | - Makoto Inoue
- University of Illinois at Urbana-Champaign Department of Comparative Biosciences, 2001 South Lincoln Avenue, Urbana, IL, 61802, USA.
- University of Illinois at Urbana-Champaign Neuroscience Program, 405 North Matthews Avenue, Urbana, IL, 61801, USA.
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16
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Yao Z, Liu N, Zhu X, Wang L, Zhao Y, Liu Q, Gao C, Li J. Subanesthetic isoflurane abates ROS-activated MAPK/NF-κB signaling to repress ischemia-induced microglia inflammation and brain injury. Aging (Albany NY) 2020; 12:26121-26139. [PMID: 33373319 PMCID: PMC7803578 DOI: 10.18632/aging.202349] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 11/16/2020] [Indexed: 12/20/2022]
Abstract
Isoflurane (ISO) elicits protective effects on ischemia-induced brain injury. We investigated whether sub-anesthetic (0.7%) ISO post-conditioning attenuates the inflammation and apoptosis in oxygen-glucose deprivation (OGD)-insulted co-cultures (microglia and neurons) in vitro and the brain injury of the middle cerebral arterial occlusion (MCAO) rat. We demonstrated that ISO augmented the viability of OGD-treated microglia and neurons. ISO reduced the expression and activation of COX2 and iNOS in OGD-challenged microglia. ISO repressed the production of tumor necrosis factor-α, interleukin (IL)-1β, IL-6, IL-8, and monocyte chemoattractant protein-1 in OGD-exposed microglia. ISO also decreased nucleosomal fragmentation and caspase-3 activity but increased mitochondrial membrane potential in OGD-stimulated microglia and neurons. Mechanistically, ISO suppressed OGD-induced microglial inflammation by blocking ROS-regulated p38 MAPK/NF-κB signaling pathway and hampered OGD-triggered microglial apoptosis in a ROS- or NO-dependent fashion. In vivo results with MCAO rats were partly consistent with the in vitro observation. These findings indicate that sub-anesthetic ISO post-conditioning abates the inflammation and apoptosis in OGD-stimulated rat microglia and the apoptosis of OGD-exposed neurons and the brain injuries of MCAO rats, suggesting it as a potentially effective therapeutic approach for ischemic brain damages.
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Affiliation(s)
- Zhiqiang Yao
- Department of Interventional Neuroradiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.,Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, Guangdong, China
| | - Ningning Liu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang 471031, Henan, China
| | - Xiaoshan Zhu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang 471031, Henan, China
| | - Ling Wang
- Department of Anesthesiology, 150th Central Hospital of PLA, Luoyang 471031, Henan, China
| | - Yali Zhao
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang 471031, Henan, China
| | - Qinqin Liu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang 471031, Henan, China
| | - Chunfang Gao
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang 471031, Henan, China
| | - Juntang Li
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang 471031, Henan, China.,Department of Immunology, The Fourth Military Medical University, Xi’an 710032, Shaanxi, China
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17
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Molecular insights into the therapeutic promise of targeting HMGB1 in depression. Pharmacol Rep 2020; 73:31-42. [PMID: 33015736 DOI: 10.1007/s43440-020-00163-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/09/2020] [Accepted: 09/19/2020] [Indexed: 12/17/2022]
Abstract
Depression is a common psychiatric disorder, the exact pathogenesis of which is still elusive. Studies have proposed that immunity disproportion and enhancement in proinflammatory cytokines might be linked with the development of depression. HMGB1 (High-mobility group box (1) protein has obtained more interest as an essential factor in inherent immune reactions and a regulating factor in various inflammation-related diseases. HMGB1 is a ubiquitous chromatin protein and is constitutively expressed in nucleated mammalian cells. HMGB1 is released by glial cells and neurons upon inflammasome activation and act as a pro-inflammatory cytokine. HMGB1 is a late mediator of inflammation and has been indicated as a major mediator in various neuroinflammatory diseases. Microglia, which is the brain immune cell, is stimulated by HMGB1 and released inflammatory mediators and induces chronic neurodegeneration in the CNS (central nervous system). In the current review, we aimed to investigate the role of HMGB1 in the pathogenesis of depression. The studies found that HMGB1 functions as proinflammatory cytokines primarily via binding receptors like RAGE (receptor for advanced glycation end product), TLR2 and TLR4 (Toll-like receptor 2 and 4). Further, HMGB1 added to the preparing impacts of stress-pretreatment and assumed a major function in neurodegenerative conditions through moderating neuroinflammation. Studies demonstrated that neuroinflammation played a major role in the development of depression. The patients of depression generally exhibited an elevated amount of proinflammatory cytokines in the serum, microglia activation and neuronal deficit in the CNS.
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18
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Liu C, Hu T, Cai Z, Xie Q, Yuan Y, Li N, Xie S, Yao Q, Zhao J, Wu QQ, Tang Q. Nucleotide-Binding Oligomerization Domain-Like Receptor 3 Deficiency Attenuated Isoproterenol-Induced Cardiac Fibrosis via Reactive Oxygen Species/High Mobility Group Box 1 Protein Axis. Front Cell Dev Biol 2020; 8:713. [PMID: 32850832 PMCID: PMC7431462 DOI: 10.3389/fcell.2020.00713] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 07/13/2020] [Indexed: 01/05/2023] Open
Abstract
Nucleotide-binding oligomerization domain-like receptor 3 (NLRP3) is involved in fibrosis of multiple organs, such as kidney, liver, lung, and the like. However, the role of NLRP3 in cardiac fibrosis is still controversial and remains unclear. The study aims to investigate the role of NLRP3 on cardiac fibrosis induced by isoproterenol (ISO). In vivo, NLRP3 knockout and wild-type mice were subcutaneously injected with ISO to induce the cardiac fibrosis model. The results showed that NLRP3 deficiency alleviated the cardiac fibrosis and inflammation induced by ISO. In vitro, neonatal rat ventricular myocytes (NRVMs) and primary adult mouse cardiac fibroblasts of NLRP3 knockout and wild-type mice were isolated and challenged with ISO. Adenovirus (Ad-) NLRP3 and small interfering RNAs targeting NLRP3 were used to transfect NRVMs to overexpress or knockdown NLRP3. We found that NLRP3 could regulate high-mobility group box 1 protein (HMGB1) secretion via reactive oxygen species production in NRVMs and the HMGB1 secreted by NRVMs promoted the activation and proliferation of cardiac fibroblasts. Thus, we concluded that the NLRP3/reactive oxygen species/HMGB1 pathway could be the underlying mechanism of ISO-induced cardiac fibrosis.
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Affiliation(s)
- Chen Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Tongtong Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Zhulan Cai
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Qingwen Xie
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Yuan Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Ning Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Saiyang Xie
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Qi Yao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Jinhua Zhao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Qing Qing Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Qizhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
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19
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Silencing of circFoxO3 Protects HT22 Cells from Glutamate-Induced Oxidative Injury via Regulating the Mitochondrial Apoptosis Pathway. Cell Mol Neurobiol 2020; 40:1231-1242. [PMID: 32140899 DOI: 10.1007/s10571-020-00817-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 02/17/2020] [Indexed: 12/23/2022]
Abstract
Recent studies demonstrated that FoxO3 circular RNA (circFoxO3) plays an important regulatory role in tumourigenesis and cardiomyopathy. However, the role of circFoxO3 in neurodegenerative diseases remains unknown. The aim of this study was to examine the possible role of circFoxO3 in neurodegenerative diseases and the underlying mechanisms. To model human neurodegenerative conditions, hippocampus-derived neurons were treated with glutamate. Using molecular and cellular biology approaches, we found that circFoxO3 expression was significantly higher in the glutamate treatment group than that in the control group. Furthermore, silencing of circFoxO3 protected HT22 cells from glutamate-induced oxidative injury through the inhibition of the mitochondrial apoptotic pathway. Collectively, our study demonstrates that endogenous circFoxO3 plays a key role in inducing apoptosis and neuronal cell death and may act as a novel therapeutic target for neurodegenerative diseases.
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20
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Cheng GM, Wang RL, Zhang B, Deng XY. The protective effect of uric acid in reducing TLR4/NF-κB activation through the inhibition of HMGB1 acetylation in a model of ischemia-reperfusion injury in vitro. Mol Biol Rep 2020; 47:3233-3240. [PMID: 32095984 DOI: 10.1007/s11033-020-05324-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 02/13/2020] [Indexed: 12/11/2022]
Abstract
Inflammation plays an important role in ischemia-reperfusion injury. Through its antioxidative effects, uric acid can reduce cell injury. However, its mechanism is unknown. This study investigated the protective mechanism of uric acid in cells during ischemia-reperfusion. We divided hippocampal neurons into six groups: the control, OGD, OGD/R, OGD/R + HMGB1 siRNA, OGD/R + uric acid, and OGD/R + uric acid + HMGB1 groups. The MTT assay was used to evaluate cell viability, while apoptosis was detected by flow cytometry. The expression of HMGB1, TLR4, NF-κB-p65 and phosphorylated NF-κB-p65 was detected by Western blotting. The levels of IL-6, IL-1β and TNF-α in the culture medium were determined by ELISA. The results indicated increased cell viability and decreased apoptosis in the presence of HMGB1 siRNA and uric acid but the opposite findings in the presence of HMGB1 protein after OGD/R. Uric acid and HMGB1 siRNA inhibited HMGB1 acetylation to prevent its transport from the nucleus to the cytoplasm. The expression of HMGB1 downstream proteins (TLR4, NF-κB-p65 and phosphorylated NF-κB-p65) and the levels of inflammatory factors in the presence of HMGB1 siRNA and uric acid was lower than those in the presence of HMGB1 protein after OGD or OGD/R. These data indicated that uric acid may prevent cell injury mainly by inhibiting HMGB1 acetylation to regulate TLR4/NF-κB pathways and reduce the levels of inflammatory factors.
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Affiliation(s)
- Guan-Mei Cheng
- Department of Neurology, The Fifth Affiliated Hospital of Guangzhou Medical University, 621#Harbour Road, Whampoa District, Guangzhou, 510700, China
| | - Ruo-Lu Wang
- Department of Neurology, The Fifth Affiliated Hospital of Guangzhou Medical University, 621#Harbour Road, Whampoa District, Guangzhou, 510700, China
| | - Bin Zhang
- Department of Neurology, The Fifth Affiliated Hospital of Guangzhou Medical University, 621#Harbour Road, Whampoa District, Guangzhou, 510700, China.
| | - Xiao-Ying Deng
- Department of Neurology, The Fifth Affiliated Hospital of Guangzhou Medical University, 621#Harbour Road, Whampoa District, Guangzhou, 510700, China.
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21
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Serpa J. Metabolic Remodeling as a Way of Adapting to Tumor Microenvironment (TME), a Job of Several Holders. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1219:1-34. [PMID: 32130691 DOI: 10.1007/978-3-030-34025-4_1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The microenvironment depends and generates dependence on all the cells and structures that share the same niche, the biotope. The contemporaneous view of the tumor microenvironment (TME) agrees with this idea. The cells that make up the tumor, whether malignant or not, behave similarly to classes of elements within a living community. These elements inhabit, modify and benefit from all the facilities the microenvironment has to offer and that will contribute to the survival and growth of the tumor and the progression of the disease.The metabolic adaptation to microenvironment is a crucial process conducting to an established tumor able to grow locally, invade and metastasized. The metastatic cancer cells are reasonable more plastic than non-metastatic cancer cells, because the previous ones must survive in the microenvironment where the primary tumor develops and in addition, they must prosper in the microenvironment in the metastasized organ.The metabolic remodeling requires not only the adjustment of metabolic pathways per se but also the readjustment of signaling pathways that will receive and obey to the extracellular instructions, commanding the metabolic adaptation. Many diverse players are pivotal in cancer metabolic fitness from the initial signaling stimuli, going through the activation or repression of genes, until the phenotype display. The new phenotype will permit the import and consumption of organic compounds, useful for energy and biomass production, and the export of metabolic products that are useless or must be secreted for a further recycling or controlled uptake. In the metabolic network, three subsets of players are pivotal: (1) the organic compounds; (2) the transmembrane transporters, and (3) the enzymes.This chapter will present the "Pharaonic" intent of diagraming the interplay between these three elements in an attempt of simplifying and, at the same time, of showing the complex sight of cancer metabolism, addressing the orchestrating role of microenvironment and highlighting the influence of non-cancerous cells.
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Affiliation(s)
- Jacinta Serpa
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School | Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisbon, Portugal.
- Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisbon, Portugal.
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22
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Cipollini V, Anrather J, Orzi F, Iadecola C. Th17 and Cognitive Impairment: Possible Mechanisms of Action. Front Neuroanat 2019; 13:95. [PMID: 31803028 PMCID: PMC6877481 DOI: 10.3389/fnana.2019.00095] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 11/07/2019] [Indexed: 12/14/2022] Open
Abstract
T helper 17 (Th17) cells represent a distinct population of immune cells, important in the defense of the organism against extracellular infectious agents. Because of their cytokine profile and ability to recruit other immune cell types, they are highly pro-inflammatory and are involved in the induction of several autoimmune disorders. Recent studies show that Th17 cells and their signature cytokine IL-17 have also a role in a wide variety of neurological diseases. This review article will briefly summarize the evidence linking Th17 cells to brain diseases associated with cognitive impairment, including multiple sclerosis (MS), ischemic brain injury and Alzheimer’s disease (AD). We will also investigate the mechanisms by which these cells enter the brain and induce brain damage, including direct effects of IL-17 on brain cells and indirect effects mediated through disruption of the blood-brain barrier (BBB), neurovascular dysfunction and gut-brain axis. Finally, therapeutic prospects targeting Th17 cells and IL-17 will be discussed.
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Affiliation(s)
| | - Josef Anrather
- Feil Family Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, United States
| | - Francesco Orzi
- Sant' Andrea Hospital, Sapienza University of Rome, Rome, Italy
| | - Costantino Iadecola
- Feil Family Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, United States
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Dai Q, Li S, Liu T, Zheng J, Han S, Qu A, Li J. Interleukin-17A-mediated alleviation of cortical astrocyte ischemic injuries affected the neurological outcome of mice with ischemic stroke. J Cell Biochem 2019; 120:11498-11509. [PMID: 30746745 DOI: 10.1002/jcb.28429] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 11/22/2018] [Accepted: 11/29/2018] [Indexed: 01/24/2023]
Abstract
We previously reported that astrocytes are the main sources of interleukin (IL)-17A production that could aggravate neuronal injuries in ischemic stroke. However, the effects of IL-17A on ischemic astrocytes themselves and the underlying molecular mechanism are still unclear. In this study, we found that recombinant mouse (rm) IL-17A could significantly (P < 0.05 or <0.001) alleviate 1-hour oxygen-glucose deprivation (OGD)/reoxygenation (R) 24-hour-induced ischemic injuries in cortical astrocytes with a dose-dependent manner (n = 6 per group). The Western blot and cell cycle analysis results revealed that rmIL-17A significantly ( P < 0.05) inhibited procaspase-3 cleavage without affecting cell proliferation in 1-hour OGD/R 24-hour-treated cortical astrocytes (n = 6 per group). Among the five IL-17 receptor subunits (IL-RA, -RB, -RC, -RD, and -RE), only IL-17RA ( P < 0.01) and -17RC ( P < 0.05) membrane translocation (not messenger RNA and protein) levels were downregulated in cortical astrocytes following 1-hour OGD/reperfusion 24 hours, and rmIL-17A could significantly ( P < 0.05 or <0.001) inhibit this downregulation (n = 6 per group). To further verify the impact of IL-17A on the neurological outcome of ischemic stroke, we found that the intracerebroventricular injection of IL-17A neutralizing monoclonal antibody remarkably ( P < 0.001) reduced the astrocyte activation and improve neurological function ( P < 0.05 or <0.01) of mice following 1-hour middle cerebral artery occlusion/reperfusion (R) 3 to 7 days (n = 6 or 8 per group). These results suggested that IL-17A-mediated alleviation of cortical astrocyte ischemic injuries could affect the neurological outcome of mice with ischemic stroke, which might be mainly dependent on the cell apoptosis pathway through inhibiting the downregulation of IL-17RA and -17RC membrane translocations.
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Affiliation(s)
- Qingqing Dai
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, School of Basic Medical Science, Capital Medical University, Beijing, China
| | - Shujuan Li
- Department of Neurology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Ting Liu
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, School of Basic Medical Science, Capital Medical University, Beijing, China
| | - Jiayin Zheng
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, School of Basic Medical Science, Capital Medical University, Beijing, China
| | - Song Han
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, School of Basic Medical Science, Capital Medical University, Beijing, China
| | - Aijuan Qu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Capital Medical University, Beijing, China
| | - Junfa Li
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, School of Basic Medical Science, Capital Medical University, Beijing, China
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24
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Ye Y, Zeng Z, Jin T, Zhang H, Xiong X, Gu L. The Role of High Mobility Group Box 1 in Ischemic Stroke. Front Cell Neurosci 2019; 13:127. [PMID: 31001089 PMCID: PMC6454008 DOI: 10.3389/fncel.2019.00127] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 03/14/2019] [Indexed: 12/11/2022] Open
Abstract
High-mobility group box 1 protein (HMGB1) is a novel, cytokine-like, and ubiquitous, highly conserved, nuclear protein that can be actively secreted by microglia or passively released by necrotic neurons. Ischemic stroke is a leading cause of death and disability worldwide, and the outcome is dependent on the amount of hypoxia-related neuronal death in the cerebral ischemic region. Acting as an endogenous danger-associated molecular pattern (DAMP) protein, HMGB1 mediates cerebral inflammation and brain injury and participates in the pathogenesis of ischemic stroke. It is thought that HMGB1 signals via its presumed receptors, such as toll-like receptors (TLRs), matrix metalloproteinase (MMP) enzymes, and receptor for advanced glycation end products (RAGEs) during ischemic stroke. In addition, the release of HMGB1 from the brain into the bloodstream influences peripheral immune cells. However, the role of HMGB1 in ischemic stroke may be more complex than this and has not yet been clarified. Here, we summarize and review the research into HMGB1 in ischemic stroke.
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Affiliation(s)
- Yingze Ye
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhi Zeng
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Tong Jin
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hongfei Zhang
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - Xiaoxing Xiong
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China.,Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lijuan Gu
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
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25
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Wang G, Wang W, Wang Y, Huang T, Wang Y. HBx inhibits HMGB1 expression and active oxygen production in LO2 cells through the NF‐κB signaling pathway. Kaohsiung J Med Sci 2019; 35:133-138. [PMID: 30887719 DOI: 10.1002/kjm2.12024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 12/27/2018] [Indexed: 02/02/2023] Open
Affiliation(s)
- Gao‐Xiong Wang
- Department of Hepatobiliary SurgerySecond Affiliated Hospital of Fujian Medical University Quanzhou China
| | - Wei Wang
- Department of Hepatobiliary SurgerySecond Affiliated Hospital of Fujian Medical University Quanzhou China
| | - Yan‐Jun Wang
- Department of Hepatobiliary SurgerySecond Affiliated Hospital of Fujian Medical University Quanzhou China
| | - Tian‐Cong Huang
- Department of Hepatobiliary SurgerySecond Affiliated Hospital of Fujian Medical University Quanzhou China
| | - Ying‐Chao Wang
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian ProvinceMengchao Hepatobiliary Hospital of Fujian Medical University Fuzhou China
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26
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NDRG4 prevents cerebral ischemia/reperfusion injury by inhibiting neuronal apoptosis. Genes Dis 2019; 6:448-454. [PMID: 31832525 PMCID: PMC6888726 DOI: 10.1016/j.gendis.2019.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 01/10/2019] [Indexed: 02/03/2023] Open
Abstract
Cerebral ischemia is a major cause of mortality and long-term morbidity worldwide. NDRG4 has been shown to protect against cerebral ischemia, although the underlying mechanisms remain largely unclear. Here we found that NDRG4 expression was decreased in the brain tissues of ischemia/reperfusion (IR) rats, indicating increased apoptosis rates among cerebral cells. NDRG4 restoration via an adenovirus significantly attenuated cerebral infarct sizes and impairments in IR rats. Furthermore, adenovirus-mediated NDRG4 inhibited cell apoptosis in the brains of IR rats and regulated the expression of Bcl-2, Bax, caspase-3, and c-Fos. Moreover, we found that NDRG4 increased expression of BDNF, which is strongly related to cerebral ischemia and cellular apoptosis. Altogether, our findings demonstrate that NDRG4 protects cerebral IR injury by inhibiting cell apoptosis and regulates cerebral cell apoptosis by increasing BDNF expression. These results suggest that NDRG4 may be a therapeutic target for IR treatment.
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27
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Pan YJ, Ren X, Zhang YY, Lv J, Zeng QL, Zhang HY, Yu ZJ. IL-17A-mediated ERK1/2/p65 signaling pathway is associated with cell apoptosis after non-alcoholic steatohepatitis. IUBMB Life 2018; 71:302-309. [PMID: 30481403 DOI: 10.1002/iub.1960] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/17/2018] [Accepted: 09/26/2018] [Indexed: 01/30/2023]
Abstract
Interleukin (IL)-17A is pro-inflammatory cytokine which has been identified as a noninvasive marker of the pathogenesis of non-alcoholic steatohepatitis (NASH). However, the underlying role of IL-17A in NASH progression remains unclear. This study was designed to investigate the biological function and molecular mechanism of IL-17A in the induction of NASH. The results showed that IL-17A was highly expressed in high-fat diet (HFD)-induced NASH mouse model. Intravenous injection of IL-17A exacerbated steatohepatitis process via promoting hepatocyte apoptosis. Furthermore, IL-17A-induced apoptosis was mediated by ERK1/2/p65 signaling pathway. In conclusion, we demonstrated that IL-17A-mediated ERK1/2/p65 signaling pathway was a promising target for the treatment of NASH. © 2018 IUBMB Life, 71(3):302-309, 2019.
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Affiliation(s)
- Ya-Jie Pan
- Department of Infectious Diseases and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xing Ren
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Ying-Ying Zhang
- Department of Infectious Diseases and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Jun Lv
- Department of Infectious Diseases and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Qing-Lei Zeng
- Department of Infectious Diseases and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Hong-Yu Zhang
- Department of Infectious Diseases and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zu-Jiang Yu
- Department of Infectious Diseases and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
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28
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Wanchao S, Chen M, Zhiguo S, Futang X, Mengmeng S. Protective effect and mechanism of Lactobacillus on cerebral ischemia reperfusion injury in rats. ACTA ACUST UNITED AC 2018; 51:e7172. [PMID: 29791585 PMCID: PMC5972019 DOI: 10.1590/1414-431x20187172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 03/12/2018] [Indexed: 01/14/2023]
Abstract
The present study was designed to investigate the protective effects and
mechanism of inactivated lactobacillus (ILA) on cerebral ischemia reperfusion
injury (CIRI) in rats. In this experiment, 30 male Sprague Dawley rats were
randomly divided into control group, IRI groups, and ILA group. A middle
cerebral artery occlusion and reperfusion model was prepared. The rats were
killed after 24 hours of recovery of blood flow of cerebral ischemia resulting
from 60-min occlusion. The cerebral infarction volume and neurological scores
were assayed by staining and behavioral observation. Malondialdehyde (MDA) and
superoxide dismutase (SOD) levels were assayed by biochemical kits. Cell
apoptosis was assayed by Tunnel and the Toll-like receptor (TLR)-4, IkB, and A20
were assayed by western blot. The neurobehavioral scores in IRI rats were
significantly lower compared to the control group while ILA improved the
neurobehavioral scores of the ILA groups. The cerebral infarction volume and
neural cell apoptosis of rats in the ILA groups decreased significantly compared
with those in the IRI group. In addition, MDA level in the ILA groups decreased
whereas SOD activity increased compared to the IRI group. Moreover, ILA also
inhibited the expression of TLR-4 and promoted the expression of IkB and A20.
ILA inhibited the apoptosis of neural cells, decreased cerebral infarction
volume, and reduced oxidative stress through inhibition of TLR-4/NF-kappa B
signaling, improving neurobehavioral scores. Thus from the present study it was
concluded that ILA has protective effect on CIRI.
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Affiliation(s)
- Shi Wanchao
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Ma Chen
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Su Zhiguo
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Xie Futang
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
| | - Shi Mengmeng
- Cerebrovascular Disease Treatment Center, No.5 Tianjin Center Hospital, Tianjin, China
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