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Yeh TJ, Wang HC, Cho SF, Wu CC, Hsieh TY, Huang CT, Wang MH, Chuang TM, Gau YC, Du JS, Liu YC, Hsiao HH, Pan MR, Chen LT, Moi SH. The Prognosis Performance of a Neutrophil- and Lymphocyte-Associated Gene Mutation Score in a Head and Neck Cancer Cohort. Biomedicines 2023; 11:3113. [PMID: 38137334 PMCID: PMC10741104 DOI: 10.3390/biomedicines11123113] [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: 05/08/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
The treatment of head and neck squamous cell carcinomas (HNSCCs) is multimodal, and chemoradiotherapy (CRT) is a critical component. However, the availability of predictive or prognostic markers in patients with HNSCC is limited. Inflammation is a well-documented factor in cancer, and several parameters have been studied, with the neutrophil-to-lymphocyte ratio (NLR) being the most promising. The NLR is the most extensively researched clinical biomarker in various solid tumors, including HNSCC. In our study, we collected clinical and next-generation sequencing (NGS) data with targeted sequencing information from 107 patients with HNSCC who underwent CRT. The difference in the NLR between the good response group and the poor response group was significant, with more patients having a high NLR in the poor response group. We also examined the genetic alterations linked to the NLR and found a total of 41 associated genes across eight common pathways searched from the KEGG database. The overall mutation rate was low, and there was no significant mutation difference between the low- and high-NLR groups. Using a multivariate binomial generalized linear model, we identified three candidate genes (MAP2K2, MAP2K4, and ABL1) that showed significant results and were used to create a gene mutation score (GMS). Using the NLR-GMS category, we noticed that the high-NLR-GMS group had significantly shorter relapse-free survival compared to the intermediate- or low-NLR-GMS groups.
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Affiliation(s)
- Tsung-Jang Yeh
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Hui-Ching Wang
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shih-Feng Cho
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chun-Chieh Wu
- Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Tzu-Yu Hsieh
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
| | - Chien-Tzu Huang
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Min-Hong Wang
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Tzer-Ming Chuang
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
| | - Yuh-Ching Gau
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Jeng-Shiun Du
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Yi-Chang Liu
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hui-Hua Hsiao
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (T.-J.Y.); (H.-C.W.); (S.-F.C.); (T.-Y.H.); (C.-T.H.); (M.-H.W.); (T.-M.C.); (Y.-C.G.); (J.-S.D.); (Y.-C.L.); (H.-H.H.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Mei-Ren Pan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Li-Tzong Chen
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan
| | - Sin-Hua Moi
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Sun HY, Wu J, Wang R, Zhang S, Xu H, Kaznacheyeva Е, Lu XJ, Ren HG, Wang GH. Pazopanib alleviates neuroinflammation and protects dopaminergic neurons in LPS-stimulated mouse model by inhibiting MEK4-JNK-AP-1 pathway. Acta Pharmacol Sin 2023; 44:1135-1148. [PMID: 36536076 PMCID: PMC10203146 DOI: 10.1038/s41401-022-01030-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 11/10/2022] [Indexed: 12/23/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disease characterized by the loss of dopaminergic (DA) neurons and the accumulation of Lewy bodies (LB) in the substantia nigra (SN). Evidence shows that microglia-mediated neuroinflammation plays a key role in PD pathogenesis. Using TNF-α as an indicator for microglial activation, we established a cellular model to screen compounds that could inhibit neuroinflammation. From 2471 compounds in a small molecular compound library composed of FDA-approved drugs, we found 77 candidates with a significant anti-inflammatory effect. In this study, we further characterized pazopanib, a pan-VEGF receptor tyrosine kinase inhibitor (that was approved by the FDA for the treatment of advanced renal cell carcinoma and advanced soft tissue sarcoma). We showed that pretreatment with pazopanib (1, 5, 10 μM) dose-dependently suppressed LPS-induced BV2 cell activation evidenced by inhibiting the transcription of proinflammatory factors iNOS, COX2, Il-1β, and Il-6 through the MEK4-JNK-AP-1 pathway. The conditioned medium from LPS-treated microglia caused mouse DA neuronal MES23.5 cell damage, which was greatly attenuated by pretreatment of the microglia with pazopanib. We established an LPS-stimulated mouse model by stereotactic injection of LPS into mouse substantia nigra. Administration of pazopanib (10 mg·kg-1·d-1, i.p., for 10 days) exerted significant anti-inflammatory and neuronal protective effects, and improved motor abilities impaired by LPS in the mice. Together, we discover a promising candidate compound for anti-neuroinflammation and provide a potential repositioning of pazopanib in the treatment of PD.
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Affiliation(s)
- Hong-Yang Sun
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Jin Wu
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Rui Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Shun Zhang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Hao Xu
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Еlena Kaznacheyeva
- Institute of Cytology of Russian Academy of Sciences, Saint-Petersburg, 194064, Russia
| | - Xiao-Jun Lu
- Department of Neurosurgery, the First People's Hospital of Taicang, Taicang Affiliated Hospital of Soochow University, Suzhou, 215400, China
| | - Hai-Gang Ren
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Guang-Hui Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
- Center of Translational Medicine, the First People's Hospital of Taicang, Taicang Affiliated Hospital of Soochow University, Suzhou, 215400, China.
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Katzengruber L, Sander P, Laufer S. MKK4 Inhibitors-Recent Development Status and Therapeutic Potential. Int J Mol Sci 2023; 24:ijms24087495. [PMID: 37108658 PMCID: PMC10144091 DOI: 10.3390/ijms24087495] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/12/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
MKK4 (mitogen-activated protein kinase kinase 4; also referred to as MEK4) is a dual-specificity protein kinase that phosphorylates and regulates both JNK (c-Jun N-terminal kinase) and p38 MAPK (p38 mitogen-activated protein kinase) signaling pathways and therefore has a great impact on cell proliferation, differentiation and apoptosis. Overexpression of MKK4 has been associated with aggressive cancer types, including metastatic prostate and ovarian cancer and triple-negative breast cancer. In addition, MKK4 has been identified as a key regulator in liver regeneration. Therefore, MKK4 is a promising target both for cancer therapeutics and for the treatment of liver-associated diseases, offering an alternative to liver transplantation. The recent reports on new inhibitors, as well as the formation of a startup company investigating an inhibitor in clinical trials, show the importance and interest of MKK4 in drug discovery. In this review, we highlight the significance of MKK4 in cancer development and other diseases, as well as its unique role in liver regeneration. Furthermore, we present the most recent progress in MKK4 drug discovery and future challenges in the development of MKK4-targeting drugs.
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Affiliation(s)
- Leon Katzengruber
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmaceutical Sciences, Faculty of Sciences, University of Tuebingen, 72076 Tübingen, Germany
| | - Pascal Sander
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmaceutical Sciences, Faculty of Sciences, University of Tuebingen, 72076 Tübingen, Germany
| | - Stefan Laufer
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmaceutical Sciences, Faculty of Sciences, University of Tuebingen, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided & Functionally Instructed Tumor Therapies', Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
- Tübingen Center for Academic Drug Discovery, Auf der Morgenstelle 8, 72076 Tübingen, Germany
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Preston SP, Allison CC, Schaefer J, Clow W, Bader SM, Collard S, Forsyth WO, Clark MP, Garnham AL, Li-Wai-Suen CSN, Peiris T, Teale J, Mackiewicz L, Davidson S, Doerflinger M, Pellegrini M. A necroptosis-independent function of RIPK3 promotes immune dysfunction and prevents control of chronic LCMV infection. Cell Death Dis 2023; 14:123. [PMID: 36792599 PMCID: PMC9931694 DOI: 10.1038/s41419-023-05635-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/13/2022] [Accepted: 01/31/2023] [Indexed: 02/17/2023]
Abstract
Necroptosis is a lytic and inflammatory form of cell death that is highly constrained to mitigate detrimental collateral tissue damage and impaired immunity. These constraints make it difficult to define the relevance of necroptosis in diseases such as chronic and persistent viral infections and within individual organ systems. The role of necroptotic signalling is further complicated because proteins essential to this pathway, such as receptor interacting protein kinase 3 (RIPK3) and mixed lineage kinase domain-like (MLKL), have been implicated in roles outside of necroptotic signalling. We sought to address this issue by individually defining the role of RIPK3 and MLKL in chronic lymphocytic choriomeningitis virus (LCMV) infection. We investigated if necroptosis contributes to the death of LCMV-specific CD8+ T cells or virally infected target cells during infection. We provide evidence showing that necroptosis was redundant in the pathogenesis of acute forms of LCMV (Armstrong strain) and the early stages of chronic (Docile strain) LCMV infection in vivo. The number of immune cells, their specificity and reactivity towards viral antigens and viral loads are not altered in the absence of either MLKL or RIPK3 during acute and during the early stages of chronic LCMV infection. However, we identified that RIPK3 promotes immune dysfunction and prevents control of infection at later stages of chronic LCMV disease. This was not phenocopied by the loss of MLKL indicating that the phenotype was driven by a necroptosis-independent function of RIPK3. We provide evidence that RIPK3 signaling evoked a dysregulated type 1 interferone response which we linked to an impaired antiviral immune response and abrogated clearance of chronic LCMV infection.
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Affiliation(s)
- Simon P. Preston
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia ,SYNthesis Research, Bio21 Institute, Parkville, VIC Australia
| | - Cody C. Allison
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Jan Schaefer
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - William Clow
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Stefanie M. Bader
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Sophie Collard
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Wasan O. Forsyth
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Michelle P. Clark
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Alexandra L. Garnham
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Connie S. N. Li-Wai-Suen
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Thanushi Peiris
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia
| | - Jack Teale
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia
| | - Liana Mackiewicz
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia
| | - Sophia Davidson
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, VIC Australia
| | - Marcel Doerflinger
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia. .,Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia.
| | - Marc Pellegrini
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia. .,Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia.
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Yao H, Gao Y, Han J, Wang Y, Cai J, Rui Y, Ge X. MKK4 Knockdown Plays a Protective Role in Hemorrhagic Shock-Induced Liver Injury through the JNK Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5074153. [PMID: 36164393 PMCID: PMC9509254 DOI: 10.1155/2022/5074153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/18/2022] [Accepted: 08/25/2022] [Indexed: 11/18/2022]
Abstract
Hemorrhagic shock (HS) triggers tissue hypoxia and organ failure during severe blood loss, and the liver is sensitive to HS. Mitogen-activated protein kinase kinase 4 (MKK4) activates the c-Jun NH2-terminal kinase (JNK) pathway, and its expression is upregulated in the serum of HS patients and mouse livers at 1 h post-HS. However, the function of MKK4 in HS-induced liver injury is unclear. The role of MKK4 was investigated in vivo using rat models of HS. Before HS, lentivirus harboring shRNA against MKK4 was injected into rats via the tail vein to knock down MKK4 expression. HS was induced by bloodletting via intubation of the femoral artery followed by resuscitation. The results showed that MKK4 knockdown reduced HS-induced apoptosis in the liver by decreasing Bax expression and the cleavage of caspase 3 and promoting Bcl-2 expression. Moreover, the generation of intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) in the liver was promoted, while superoxide dismutase (SOD) activity was inhibited by HS. However, the effect of HS on oxidative stress was abrogated by MKK4 knockdown. Furthermore, MKK4 knockdown restored MMP and complex I and complex III activities and promoted ATP production, suggesting that HS-induced mitochondrial dysfunction in the liver was ameliorated by MKK4 knockdown. The inhibitory effect of MKK4 knockdown on the phosphorylation and activation of the JNK/c-Jun pathway was confirmed. Overall, MKK4 knockdown may suppress oxidative stress and subsequent apoptosis and improve mitochondrial function in the liver upon HS by inhibiting the JNK pathway. The MKK4/JNK axis was shown to be a therapeutic target for HS-induced liver injury in this study.
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Affiliation(s)
- Hao Yao
- Department of ICU, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
| | - Yu Gao
- Department of ICU, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
| | - Jiahui Han
- Department of ICU, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
| | - Yan Wang
- Department of ICU, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
| | - Jimin Cai
- Department of ICU, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
| | - Yongjun Rui
- Department of Traumatic Orthopedics, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
| | - Xin Ge
- Department of ICU, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, China
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Multiple Roles of Paeoniflorin in Alzheimer's Disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2464163. [PMID: 35449815 PMCID: PMC9017479 DOI: 10.1155/2022/2464163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/09/2022] [Indexed: 12/18/2022]
Abstract
Alzheimer's disease (AD) is a geriatric disease with the morbidity and mortality continuing to grow, partly due to the aging of the world population. As one of the most common types of primary neurodegenerative dementia, it is mainly due to environmental, epigenetic, immunological, and genetic factors. Paeoniflorin (PF), the main component of paeony extract, plays a more and more important role in the prevention and treatment of AD, including regulating protein, anti-inflammation, antioxidation, and antiapoptosis, protecting glial cells, regulating neurotransmitters and related enzymes and receptors, and inhibiting or activating related signal pathways. This article summarizes the latest researches on the multiple effects and the mechanisms of PF in the treatment to cure AD, providing new insights and research basis for further clinical application of traditional Chinese medicine (TCM) in the treatment of AD.
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