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Tian X, Wang G, Teng F, Xue X, Pan J, Mao Q, Guo D, Song X, Ma K. Zhi Zi Chi decoction (Gardeniae fructus and semen Sojae Praeparatum) attenuates anxious depression via modulating microbiota-gut-brain axis in corticosterone combined with chronic restraint stress-induced mice. CNS Neurosci Ther 2024; 30:e14519. [PMID: 37905694 PMCID: PMC11017446 DOI: 10.1111/cns.14519] [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: 06/03/2023] [Revised: 09/15/2023] [Accepted: 10/18/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND The microbiota-gut-brain axis plays a critical role in neuropsychiatric disorders, particularly anxious depression, and attracts more attention gradually. Zhi Zi Chi decoction (ZZCD) consisting of Gardenia jasminoides J. Ellis and Glycine max (L.) Merr, is a classic formula in clinic and widely applied in anxiety and depression treatment. However, the underlying mechanisms of regulating microbiota-gut-brain axis in the treatment of anxious depression by oral administration of ZZCD remain elusive. MATERIALS AND METHODS In this project, we clarified the origin and preparation methods of the Gardenia jasminoides J. Ellis and Glycine max (L.) Merr and examined the chemical ingredients of ZZCD by liquid chromatograph mass spectrometer. Then, corticosterone combined with chronic restraint stress was applied to establish an anxious depression model. After treated with ZZCD standard decoction, based on enzyme-linked immunosorbent assay (ELISA), 16S rRNA technology, high-throughput sequencing, quantitative RT-PCR and fecal microbiota transplantation (FMT), the multiple associations between nucleus accumbens and intestinal flora in anxious depression mice were determined to clarify the mechanism of ZZCD in the treatment of anxiety and depression disorder. RESULTS We found various substances with antidepressant and antianxiety properties in ZZCD such as rosiridin and oleanolic acid. ZZCD could alleviate depressive and anxiety behaviors in anxious depression mice via regulating the disturbance of gut microbiota. Meanwhile, the bioactive compounds of ZZCD might directly active on neurodevelopment and neuroimmune-related genes. Furthermore, the secretion of prolactin and estrogen, and interfering with mitogen-activated protein kinase (MAPK) and tumor necrosis factor (TNF) signaling pathways were mainly involved in the multi-target therapeutic effects of ZZCD against anxiety and depression. CONCLUSIONS These findings suggested that ZZCD exerts antidepressant effects pleiotropically through modulating the microbiota-gut-brain.
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Affiliation(s)
- Xuanhe Tian
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Guangyan Wang
- Department of Pharmacy, Women and Children's HospitalQingdao UniversityQingdaoChina
| | - Fei Teng
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Xiaoyan Xue
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Jin Pan
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Qiancheng Mao
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Dongjing Guo
- Shandong University of Traditional Chinese MedicineJinanChina
| | - Xiaobin Song
- Shandong University of Traditional Chinese MedicineJinanChina
- Shandong Co‐Innovation Center of Classic TCM FormulaShandong University of Traditional Chinese MedicineJinanChina
| | - Ke Ma
- Shandong Co‐Innovation Center of Classic TCM FormulaShandong University of Traditional Chinese MedicineJinanChina
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Geng M, Shao Q, Fu J, Gu J, Feng L, Zhao L, Liu C, Mu J, Zhang X, Zhao M, Guo X, Song C, Li Y, Wang H, Wang C. Down-regulation of MKP-1 in hippocampus protects against stress-induced depression-like behaviors and neuroinflammation. Transl Psychiatry 2024; 14:130. [PMID: 38424085 PMCID: PMC10904742 DOI: 10.1038/s41398-024-02846-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 02/15/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024] Open
Abstract
Chronic stress is the primary environmental risk factor for major depressive disorder (MDD), and there is compelling evidence that neuroinflammation is the major pathomechanism linking chronic stress to MDD. Mitogen-activated protein kinase (MAPK) phosphatase-1 (MKP-1) is a negative regulator of MAPK signaling pathways involved in cellular stress responses, survival, and neuroinflammation. We examined the possible contributions of MKP-1 to stress-induced MDD by comparing depression-like behaviors (anhedonia, motor retardation, behavioral despair), neuroinflammatory marker expression, and MAPK signaling pathways among rats exposed to chronic unpredictable mild stress (CUMS), overexpressing MKP-1 in the hippocampus, and CUMS-exposed rats underexpressing MKP-1 in the hippocampus. Rats exposed to CUMS exhibited MKP-1 overexpression, greater numbers of activated microglia, and enhanced expressions of neuroinflammatory markers (interleukin [IL]-6, [IL]-1β, tumor necrosis factor [TNF]-ɑ, and decreased phosphorylation levels of ERK and p38 in the hippocampus as well as anhedonia in the sucrose preference test, motor retardation in the open field, and greater immobility (despair) in the forced swimming tests. These signs of neuroinflammation and depression-like behaviors and phosphorylation levels of ERK and p38 were also observed in rats overexpressing MKP-1 without CUMS exposure, while CUMS-induced neuroinflammation, microglial activation, phosphorylation levels of ERK and p38, and depression-like behaviors were significantly reversed by MKP-1 knockdown. Moreover, MKP-1 knockdown promoted the activation of the MAPK isoform ERK, implying that the antidepressant-like effects of MKP-1 knockdown may be mediated by the ERK pathway disinhibition. These findings suggested that hippocampal MKP-1 is an essential regulator of stress-induced neuroinflammation and a promising target for antidepressant development.
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Affiliation(s)
- Mengjun Geng
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China
| | - Qiujing Shao
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China
| | - Jiacheng Fu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China
| | - Jingyang Gu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
| | - Laipeng Feng
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China
| | - Liqin Zhao
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
| | - Cong Liu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
| | - Junlin Mu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
| | - Xiaoli Zhang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
| | - Mingjun Zhao
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
| | - Xinsheng Guo
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China
| | - Cai Song
- Guangdong Ocean University College of Food Science and Technoligy, Zhanjiang, China
| | - Yan Li
- The Second Affiliated Hospital of Zhengzhou University, 450014, Zhengzhou, Henan, China.
| | - Huiying Wang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China.
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China.
| | - Changhong Wang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, 453002, Xinxiang, Henan, China.
- Henan Key Laboratory of Biological Psychiatry, Xinxiang Medical University, 453002, Xinxiang, Henan, China.
- Henan Provincial Key Laboratory of Sleep Medicine, 453002, Xinxiang, Henan, China.
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Walter MN, Montoya-Durango D, Rodriguez W, Wang Y, Zhang J, Chariker JH, Rouchka EC, Maldonado C, Bennett A, McClain CJ, Barve S, Gobejishvili L. Hepatocyte-specific mitogen-activated protein kinase phosphatase 1 in sexual dimorphism and susceptibility to alcohol induced liver injury. Front Immunol 2024; 15:1316228. [PMID: 38370409 PMCID: PMC10871047 DOI: 10.3389/fimmu.2024.1316228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/03/2024] [Indexed: 02/20/2024] Open
Abstract
Background It is well established that females are more susceptible to the toxic effects of alcohol, although the exact mechanisms are still poorly understood. Previous studies noted that alcohol reduces the expression of mitogen-activated protein kinase phosphatase 1 (MKP1), a negative regulator of mitogen-activated protein kinases (MAPK) in the liver. However, the role of hepatocyte- specific MKP1 in the pathogenesis of alcohol-associated liver disease (ALD) remains uncharacterized. This study aimed to evaluate the role of hepatocyte-specific MKP1 in the susceptibility and sexual dimorphism in alcohol-induced liver injury. Methods C57Bl/6 mice were used in an intragastric ethanol feeding model of alcohol-associated steatohepatitis (ASH). Hepatocyte-specific Mkp1-/- knockout and (Mkp1+/+ "f/f" male and female mice were subjected to the NIAAA chronic plus binge model. Primary mouse hepatocytes were used for in vitro studies. Liver RNA sequencing was performed on an Illumina NextSeq 500. Liver injury was evaluated by plasma alanine transaminase (ALT), hepatic ER stress and inflammation markers. Statistical analysis was carried out using ANOVA and the unpaired Student's t-test. Results ASH was associated with the severe injury accompanied by increased endoplasmic reticulum (ER) stress and significant downregulation of Dusp1 mRNA expression. In vitro, ethanol treatment resulted in a time-dependent decrease in Dusp1 mRNA and protein expression in primary hepatocytes in both males and females; however, this effect was significantly more pronounced in hepatocytes from females. In vivo, female mice developed more liver injury in a chronic plus binge model which was accompanied by a significant decrease in liver Dusp1 mRNA expression. In comparison, liver Dusp1 was not changed in male mice, while they developed milder injury to alcohol. Mkp1 deletion in hepatocytes led to increased alcohol induced liver injury, ER stress and inflammation in both sexes. Conclusion Hepatocyte Mkp1 plays a significant role in alcohol induced liver injury. Alcohol downregulates Mkp1 expression in hepatocytes in a sex dependent manner and could play a role in sexual dimorphism in increased female susceptibility to alcohol.
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Affiliation(s)
- Mary Nancy Walter
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Diego Montoya-Durango
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Walter Rodriguez
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Yali Wang
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - JingWen Zhang
- Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Julia H. Chariker
- Department of Neuroscience Training, University of Louisville, Louisville, KY, United States
- Kentucky IDeA Networks of Biomedical Research Excellence, (KY INBRE) Bioinformatics Core, University of Louisville, Louisville, KY, United States
| | - Eric C. Rouchka
- Kentucky IDeA Networks of Biomedical Research Excellence, (KY INBRE) Bioinformatics Core, University of Louisville, Louisville, KY, United States
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY, United States
| | - Claudio Maldonado
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Anton Bennett
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, United States
| | - Craig James McClain
- Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
- Robley Rex Veterans Affairs (VA) Medical Center, Louisville, KY, United States
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States
- Alcohol Research Center, University of Louisville, Louisville, KY, United States
- Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY, United States
| | - Shirish Barve
- Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
- Alcohol Research Center, University of Louisville, Louisville, KY, United States
- Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY, United States
| | - Leila Gobejishvili
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, United States
- Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
- Alcohol Research Center, University of Louisville, Louisville, KY, United States
- Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY, United States
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Li J, Wang L, Zeng Q, He J, Tang Q, Wang K, He G. MKP-1 regulates the inflammatory activation of microglia against Alzheimer's disease. CNS Neurosci Ther 2024; 30:e14409. [PMID: 37602891 PMCID: PMC10848084 DOI: 10.1111/cns.14409] [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: 05/09/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/22/2023] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is one of the most common neurodegenerative diseases leading to dementia in elderly people. Microglia-mediated neuroinflammation plays an important role in AD pathogenesis, so modulation of neuroinflammation has emerged as an essential therapeutic method to improve AD. The current study aims to investigate whether MKP-1 can regulate microglia phenotype and inflammatory factor release in AD and explore its possible mechanisms. METHODS Amyloid precursor protein/PS1 double transgenic mice and wild-type mice were selected to study the locations of microglia and amyloid-β (Aβ) plaques in different regions of mice brains. Changes in MKP-1 of microglia were detected using AD model mice and AD model cells. Changes in phenotype and the release of inflammatory factors within immortalized BV2 murine microglia were investigated by regulating the expression of MKP-1. RESULTS The distribution of microglia and Aβ plaques in the AD brain was region-specific. MKP-1 expression was downregulated in AD mice, and in vitro, with increasing Aβ concentrations, MKP-1 expression was reduced. MKP-1 over-expression increased M2 microglia but decreased M1 microglia accompanied by changes in inflammatory factors and inhibition of MKP-1 yielded the opposite result. CONCLUSION MKP-1 regulated microglia phenotype and inflammatory factor release in AD through modulation of the p38 signaling pathway.
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Affiliation(s)
- Junhua Li
- Institute of Neuroscience, Basic Medical CollegeChongqing Medical UniversityChongqingChina
- Department of Anatomy, Basic Medical CollegeChongqing Medical UniversityChongqingChina
| | - Lin Wang
- Department of Basic MedicineChongqing College of Traditional Chinese MedicineChongqingChina
| | - Qinhua Zeng
- Institute of Neuroscience, Basic Medical CollegeChongqing Medical UniversityChongqingChina
- Department of Anatomy, Basic Medical CollegeChongqing Medical UniversityChongqingChina
| | - Jing He
- Institute of Neuroscience, Basic Medical CollegeChongqing Medical UniversityChongqingChina
- Department of Anatomy, Basic Medical CollegeChongqing Medical UniversityChongqingChina
| | - Qing Tang
- Institute of Neuroscience, Basic Medical CollegeChongqing Medical UniversityChongqingChina
- Department of Anatomy, Basic Medical CollegeChongqing Medical UniversityChongqingChina
| | - Kejian Wang
- Institute of Neuroscience, Basic Medical CollegeChongqing Medical UniversityChongqingChina
- Department of Anatomy, Basic Medical CollegeChongqing Medical UniversityChongqingChina
| | - Guiqiong He
- Institute of Neuroscience, Basic Medical CollegeChongqing Medical UniversityChongqingChina
- Department of Anatomy, Basic Medical CollegeChongqing Medical UniversityChongqingChina
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Shi L, Zha H, Pan Z, Wang J, Xia Y, Li H, Huang H, Yue R, Song Z, Zhu J. DUSP1 protects against ischemic acute kidney injury through stabilizing mtDNA via interaction with JNK. Cell Death Dis 2023; 14:724. [PMID: 37935658 PMCID: PMC10630453 DOI: 10.1038/s41419-023-06247-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/23/2023] [Accepted: 10/24/2023] [Indexed: 11/09/2023]
Abstract
The mechanism underlying acute kidney injury (AKI) and AKI-to-Chronic kidney disease (CKD) transition remains unclear, but mitochondrial dysfunction may be a key driving factor. Literature reports suggest that dual-specificity phosphatase 1 (DUSP1) plays a critical role in maintaining mitochondrial function and structural integrity. In this study, ischemic Acute Kidney Injury (AKI) and post-ischemic fibrosis models were established by clamping the renal pedicle with different reperfusion times. To investigate the role of DUSP1, constitutional Dusp1 knockout mice and tubular-specific Sting knockout mice were used. Mitochondrial damage was assessed through electron microscopy observation, measurements of mitochondrial membrane potential, mtDNA release, and BAX translocation. We found that Dusp1 expression was significantly upregulated in human transplant kidney tissue and mouse AKI tissue. Dusp1 gene deletion exacerbated acute ischemic injury, post-ischemic renal fibrosis, and tubular mitochondrial dysfunction in mice. Mechanistically, DUSP1 could directly bind to JNK, and DUSP1 deficiency could lead to aberrant phosphorylation of JNK and BAX mitochondria translocation. BAX translocation promoted mitochondrial DNA (mtDNA) leakage and activated the cGAS-STING pathway. Inhibition of JNK or BAX could inhibit mtDNA leakage. Furthermore, STING knockout or JNK inhibition could significantly mitigate the adverse effects of DUSP1 deficiency in ischemic AKI model. Collectively, our findings suggest that DUSP1 is a regulator for the protective response during AKI. DUSP1 protects against AKI by preventing BAX-induced mtDNA leakage and blocking excessive activation of the cGAS-STING signaling axis through JNK dephosphorylation.
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Affiliation(s)
- Lang Shi
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Hongchu Zha
- Department of Nephrology, The First Clinical Medical College of Three Gorges University, Center People's Hospital of Yichang, Yichang, Hubei, 443000, China
| | - Zhou Pan
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jiayi Wang
- Department of Anesthesiology, the Xiangya Second Hospital, Central South University, Changsha, Hunan, 410000, China
| | - Yao Xia
- Department of Nephrology, The First Clinical Medical College of Three Gorges University, Center People's Hospital of Yichang, Yichang, Hubei, 443000, China
| | - Huimin Li
- Department of Nephrology, The First Clinical Medical College of Three Gorges University, Center People's Hospital of Yichang, Yichang, Hubei, 443000, China
| | - Hua Huang
- Department of Nephrology, The First Clinical Medical College of Three Gorges University, Center People's Hospital of Yichang, Yichang, Hubei, 443000, China
| | - Ruchi Yue
- Department of Nephrology, The First Clinical Medical College of Three Gorges University, Center People's Hospital of Yichang, Yichang, Hubei, 443000, China
| | - Zhixia Song
- Department of Nephrology, The First Clinical Medical College of Three Gorges University, Center People's Hospital of Yichang, Yichang, Hubei, 443000, China
| | - Jiefu Zhu
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
- Department of Organ Transplantation, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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Pratap Reddy Gajulapalli V. Development of Kinase-Centric Drugs: A Computational Perspective. ChemMedChem 2023; 18:e202200693. [PMID: 37442809 DOI: 10.1002/cmdc.202200693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 07/12/2023] [Accepted: 07/12/2023] [Indexed: 07/15/2023]
Abstract
Kinases are prominent drug targets in the pharmaceutical and research community due to their involvement in signal transduction, physiological responses, and upon dysregulation, in diseases such as cancer, neurological and autoimmune disorders. Several FDA-approved small-molecule drugs have been developed to combat human diseases since Gleevec was approved for the treatment of chronic myelogenous leukemia. Kinases were considered "undruggable" in the beginning. Several FDA-approved small-molecule drugs have become available in recent years. Most of these drugs target ATP-binding sites, but a few target allosteric sites. Among kinases that belong to the same family, the catalytic domain shows high structural and sequence conservation. Inhibitors of ATP-binding sites can cause off-target binding. Because members of the same family have similar sequences and structural patterns, often complex relationships between kinases and inhibitors are observed. To design and develop drugs with desired selectivity, it is essential to understand the target selectivity for kinase inhibitors. To create new inhibitors with the desired selectivity, several experimental methods have been designed to profile the kinase selectivity of small molecules. Experimental approaches are often expensive, laborious, time-consuming, and limited by the available kinases. Researchers have used computational methodologies to address these limitations in the design and development of effective therapeutics. Many computational methods have been developed over the last few decades, either to complement experimental findings or to forecast kinase inhibitor activity and selectivity. The purpose of this review is to provide insight into recent advances in theoretical/computational approaches for the design of new kinase inhibitors with the desired selectivity and optimization of existing inhibitors.
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Attiq A, Afzal S. Trinity of inflammation, innate immune cells and cross-talk of signalling pathways in tumour microenvironment. Front Pharmacol 2023; 14:1255727. [PMID: 37680708 PMCID: PMC10482416 DOI: 10.3389/fphar.2023.1255727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 08/08/2023] [Indexed: 09/09/2023] Open
Abstract
Unresolved inflammation is a pathological consequence of persistent inflammatory stimulus and perturbation in regulatory mechanisms. It increases the risk of tumour development and orchestrates all stages of tumorigenesis in selected organs. In certain cancers, inflammatory processes create the appropriate conditions for neoplastic transformation. While in other types, oncogenic changes pave the way for an inflammatory microenvironment that leads to tumour development. Of interest, hallmarks of tumour-promoting and cancer-associated inflammation are striking similar, sharing a complex network of stromal (fibroblasts and vascular cells) and inflammatory immune cells that collectively form the tumour microenvironment (TME). The cross-talks of signalling pathways initially developed to support homeostasis, change their role, and promote atypical proliferation, survival, angiogenesis, and subversion of adaptive immunity in TME. These transcriptional and regulatory pathways invariably contribute to cancer-promoting inflammation in chronic inflammatory disorders and foster "smouldering" inflammation in the microenvironment of various tumour types. Besides identifying common target sites of numerous cancer types, signalling programs and their cross-talks governing immune cells' plasticity and functional diversity can be used to develop new fate-mapping and lineage-tracing mechanisms. Here, we review the vital molecular mechanisms and pathways that establish the connection between inflammation and tumour development, progression, and metastasis. We also discussed the cross-talks between signalling pathways and devised strategies focusing on these interaction mechanisms to harness synthetic lethal drug combinations for targeted cancer therapy.
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Affiliation(s)
- Ali Attiq
- Discipline of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden, Penang, Malaysia
| | - Sheryar Afzal
- Department of Biomedical Sciences, Faculty of Veterinary Medicine, King Faisal University, Al Ahsa, Saudi Arabia
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Vlasov I, Filatova E, Slominsky P, Shadrina M. Differential expression of Dusp1 and immediate early response genes in the hippocampus of rats, subjected to forced swim test. Sci Rep 2023; 13:9985. [PMID: 37340011 DOI: 10.1038/s41598-023-36611-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 06/07/2023] [Indexed: 06/22/2023] Open
Abstract
The forced swim test (FST) is widely used to screen for potential antidepressant drugs and treatments. Despite this, the nature of stillness during FST and whether it resembles "depressive-like behavior" are widely debated issues. Furthermore, despite being widely used as a behavioral assay, the effects of the FST on the brain transcriptome are rarely investigated. Therefore, in this study we have investigated changes in the transcriptome of the rat hippocampus 20 min and 24 h after FST exposure. RNA-Seq is performed on the hippocampus tissues of rats 20 min and 24 h after an FST. Differentially expressed genes (DEGs) were identified using limma and used to construct gene interaction networks. Fourteen differentially expressed genes (DEGs) were identified only in the 20-m group. No DEGs were identified 24 h after the FST. These genes were used for Gene Ontology term enrichment and gene-network construction. Based on the constructed gene-interaction networks, we identified a group of DEGs (Dusp1, Fos, Klf2, Ccn1, and Zfp36) that appeared significant based on multiple methods of downstream analysis. Dusp1 appears especially important, as its role in the pathogenesis of depression has been demonstrated both in various animal models of depression and in patients with depressive disorders.
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Affiliation(s)
- Ivan Vlasov
- Institute of Molecular Genetics of National Research Centre, Kurchatov Institute, .
| | - Elena Filatova
- Institute of Molecular Genetics of National Research Centre, Kurchatov Institute
| | - Petr Slominsky
- Institute of Molecular Genetics of National Research Centre, Kurchatov Institute
| | - Maria Shadrina
- Institute of Molecular Genetics of National Research Centre, Kurchatov Institute
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Guo X, Li X, Dong Y, Xie W, Jin T, Xu D, Liu L. Cod (Gadus) skin collagen peptide powder reduces inflammation, restores mucosal barrier function, and inhibits fibrosis in dextran sodium sulfate-induced colitis in mice. JOURNAL OF ETHNOPHARMACOLOGY 2023:116728. [PMID: 37277083 DOI: 10.1016/j.jep.2023.116728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/24/2023] [Accepted: 06/02/2023] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ulcerative colitis (UC) is a chronic inflammatory bowel disease of unknown etiology. Cod (Gadus), a kind of herb from the Chinese herb. Traditionally, it has used to treat trauma, reduce swelling and relieve pain in order to exert its anti-inflammatory activity. Recent reports based on its hydrolyzed or enzymatic extracts have shown its anti-inflammatory, mucosal barrier protecting properties. However, its mechanism of improvement in ulcerative colitis is not clear. AIM OF THE STUDY This study aimed to explore the preventive and protective effect of cod skin collagen peptide powder (CP) on mice with UC and to explore the underlying mechanism. MATERIALS AND METHODS Mice with dextran sodium sulfate (DSS)-induced UC were treated with CP by gavage, and the anti-inflammatory effects of CP were assessed using general physical, pro-inflammatory cytokine, histopathological, immunohistochemical, macrophage flow cytometry, and inflammatory signaling pathway assays. RESULTS CP ameliorates inflammation by upregulating mitogen-activated protein kinase phosphatase-1 (MKP-1) and thereby decreasing the phosphorylation levels of P38 and JNK. It also polarizes macrophages in the colon towards the M2 phenotype, which helps to reduce tissue damage and promotes colon repair. At the same time, CP also inhibits the development of fibrosis, one of the complications of UC, by upregulating ZO-1, Occludin, and downregulating α-SMA, Vimentin, Snail, and Slug. CONCLUSION In this study, we found CP reduced inflammation in mice with UC by inducing MKP-1 expression, which caused dephosphorylation of mitogen-activated protein kinase (MAPK). CP also restored mucosal barrier function and inhibited the development of fibrosis complicating UC in these mice. Taken together, these results suggested that CP improved the pathological manifestations of UC in mice, suggesting that it can play a biological role as a nutritional supplement for preventing and treating UC.
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Affiliation(s)
- Xiangyu Guo
- Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China
| | - Xiangdan Li
- Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China
| | - Yanru Dong
- Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China
| | - Wei Xie
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Toufeng Jin
- Department of General Surgery, Yanbian University Hospital, Yanji, Jilin Province, China
| | - Dongyuan Xu
- Key Laboratory of Cellular Function and Pharmacology of Jilin Province, Yanbian University, Yanji, China.
| | - Lan Liu
- Department of Pathology, Yanbian University Hospital, Yanji, Jilin Province, China.
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Mayor E. Neurotrophic effects of intermittent fasting, calorie restriction and exercise: a review and annotated bibliography. FRONTIERS IN AGING 2023; 4:1161814. [PMID: 37334045 PMCID: PMC10273285 DOI: 10.3389/fragi.2023.1161814] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/09/2023] [Indexed: 06/20/2023]
Abstract
In the last decades, important progress has been achieved in the understanding of the neurotrophic effects of intermittent fasting (IF), calorie restriction (CR) and exercise. Improved neuroprotection, synaptic plasticity and adult neurogenesis (NSPAN) are essential examples of these neurotrophic effects. The importance in this respect of the metabolic switch from glucose to ketone bodies as cellular fuel has been highlighted. More recently, calorie restriction mimetics (CRMs; resveratrol and other polyphenols in particular) have been investigated thoroughly in relation to NSPAN. In the narrative review sections of this manuscript, recent findings on these essential functions are synthesized and the most important molecules involved are presented. The most researched signaling pathways (PI3K, Akt, mTOR, AMPK, GSK3β, ULK, MAPK, PGC-1α, NF-κB, sirtuins, Notch, Sonic hedgehog and Wnt) and processes (e.g., anti-inflammation, autophagy, apoptosis) that support or thwart neuroprotection, synaptic plasticity and neurogenesis are then briefly presented. This provides an accessible entry point to the literature. In the annotated bibliography section of this contribution, brief summaries are provided of about 30 literature reviews relating to the neurotrophic effects of interest in relation to IF, CR, CRMs and exercise. Most of the selected reviews address these essential functions from the perspective of healthier aging (sometimes discussing epigenetic factors) and the reduction of the risk for neurodegenerative diseases (Alzheimer's disease, Huntington's disease, Parkinson's disease) and depression or the improvement of cognitive function.
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Baindara P, Ganguli S, Chakraborty R, Mandal SM. Preventing Respiratory Viral Diseases with Antimicrobial Peptide Master Regulators in the Lung Airway Habitat. Clin Pract 2023; 13:125-147. [PMID: 36648852 PMCID: PMC9844411 DOI: 10.3390/clinpract13010012] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/22/2022] [Accepted: 12/28/2022] [Indexed: 01/18/2023] Open
Abstract
The vast surface area of the respiratory system acts as an initial site of contact for microbes and foreign particles. The whole respiratory epithelium is covered with a thin layer of the airway and alveolar secretions. Respiratory secretions contain host defense peptides (HDPs), such as defensins and cathelicidins, which are the best-studied antimicrobial components expressed in the respiratory tract. HDPs have an important role in the human body's initial line of defense against pathogenic microbes. Epithelial and immunological cells produce HDPs in the surface fluids of the lungs, which act as endogenous antibiotics in the respiratory tract. The production and action of these antimicrobial peptides (AMPs) are critical in the host's defense against respiratory infections. In this study, we have described all the HDPs secreted in the respiratory tract as well as how their expression is regulated during respiratory disorders. We focused on the transcriptional expression and regulation mechanisms of respiratory tract HDPs. Understanding how HDPs are controlled throughout infections might provide an alternative to relying on the host's innate immunity to combat respiratory viral infections.
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Affiliation(s)
- Piyush Baindara
- Department of Radiation Oncology, University of Missouri, Columbia, MO 65211, USA
| | - Sriradha Ganguli
- OMICS Laboratory, Department of Biotechnology, University of North Bengal, P.O. NBU, Siliguri 734013, West Bengal, India
| | - Ranadhir Chakraborty
- OMICS Laboratory, Department of Biotechnology, University of North Bengal, P.O. NBU, Siliguri 734013, West Bengal, India
| | - Santi M. Mandal
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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12
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Vitamin D in Neurological Diseases. Int J Mol Sci 2022; 24:ijms24010087. [PMID: 36613531 PMCID: PMC9820561 DOI: 10.3390/ijms24010087] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Vitamin D may have multiple effects on the nervous system and its deficiency can represent a possible risk factor for the development of many neurological diseases. Recent studies are also trying to clarify the different effects of vitamin D supplementation over the course of progressive neurological diseases. In this narrative review, we summarise vitamin D chemistry, metabolism, mechanisms of action, and the recommended daily intake. The role of vitamin D on gene transcription and the immune response is also reviewed. Finally, we discuss the scientific evidence that links low 25-hydroxyvitamin D concentrations to the onset and progression of severe neurological diseases, such as multiple sclerosis, Parkinson's disease, Alzheimer's disease, migraine, diabetic neuropathy and amyotrophic lateral sclerosis. Completed and ongoing clinical trials on vitamin D supplementation in neurological diseases are listed.
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Lu X, Gong C, Lv K, Zheng L, Li B, Zhao Y, Lu H, Wei T, Huang J, Li R. Impacts of combined exposure to formaldehyde and PM 2.5 at ambient concentrations on airway inflammation in mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120234. [PMID: 36195197 DOI: 10.1016/j.envpol.2022.120234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Asthma is a respiratory disease that can be exacerbated by certain environmental factors. Both formaldehyde (FA) and PM2.5, the most common indoor and outdoor air pollutants in mainland China, are closely associated with the onset and development of asthma. To date, however, there is very little report available on whether there is an exacerbating effect of combined exposure to FA and PM2.5 at ambient concentrations. In this study, asthmatic mice were exposed to 1 mg/m3 FA, 1 mg/kg PM2.5, or a combination of 0.5 mg/m3 FA and 0.5 mg/kg PM2.5, respectively. Results demonstrated that both levels of oxidative stress and inflammation were significantly increased, accompanied by an obvious decline in lung function. Further, the initial activation of p38 MAPK and NF-κB that intensified the immune imbalance of asthmatic mice were found to be visibly mitigated following the administration of SB203580, a p38 MAPK inhibitor. Noteworthily, it was found that combined exposure to the two at ambient concentrations could significantly worsen asthma than exposure to each of the two alone at twice the ambient concentration. This suggests that combined exposure to formaldehyde and PM2.5 at ambient concentrations may have a synergistic effect, thus causing more severe damage in asthmatic mice. In general, this work has revealed that the combined exposure to FA and PM2.5 at ambient concentrations can synergistically aggravate asthma via the p38 MAPK pathway in mice.
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Affiliation(s)
- Xianxian Lu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China; Department of Materials and Architectural Engineering, Hebei Institute of Mechanical and Electrical Technology, Xingtai, 054002, China
| | - Cunyi Gong
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Ke Lv
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Lifang Zheng
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Beibei Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Yuanteng Zhao
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Haonan Lu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Tingting Wei
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Jiawei Huang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Rui Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China.
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Xie C, Lin X, Hu J, Wang S, Wu J, Xiong W, Wu L. The polysaccharide from Camellia oleifera fruit shell enhances immune responses via activating MAPKs and NF-κB signaling pathways in RAW264.7 macrophages. Food Nutr Res 2022; 66:8963. [PMID: 36590859 PMCID: PMC9793767 DOI: 10.29219/fnr.v66.8963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/26/2022] [Accepted: 11/10/2022] [Indexed: 12/10/2022] Open
Abstract
Background Macrophage plays an important role in innate immune responses by secreting immune molecules and phagocytosis. Camellia oleifera fruit shell, accounting for approximately 60% weight of the single C. oleifera fruit, is rich in polysaccharides and has several biological activities such as anti-oxidation, lipid regulation and anticancer. However, the immunomodulatory activity of the polysaccharide from C. oleifera fruit shells (CPS) has not been reported. Objective This study aimed to investigate the immunomodulatory activities and mechanisms of CPS in RAW264.7 macrophages. Methods The Methyl Thiazolyl Tetrazolium (MTT) method was used to evaluate the effect of CPS on the cell viability of RAW264.7 macrophages, and cell morphology was pictured using microscope. The production of immune-related molecules, including nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor α (TNFα), interleukin (IL)-1β and IL-6, was detected by Griess assay and enzyme-linked immunosorbent assay (ELISA). The protein expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase 2 (COX2) and the phosphorylation level of mitogen-activated protein kinases (MAPKs) were analyzed through western blotting. The mRNA levels of related genes were tested using reverse transcription-polymerase chain reaction (RT-PCR). The nuclear translocation of nuclear factor-kappa B (NF-κB) was detected using immunofluorescence technology. Results The results indicated that CPS treatment stimulated the production of NO and PGE2 and significantly enhanced the protein expression of iNOS and COX2 with little effect on the cell morphology and viability. Also, the secretion and mRNA levels of TNFα were increased by the treatment of CPS. In addition, CPS treatment markedly upregulated the phosphorylation level of MAPKs including Extracellular Signal Regulated Kinase (ERK), P38, and c-Jun N-terminal Kinase (JNK) at different time points and caused the activation and nuclear translocation of NF-κB. Conclusion Our data implied that CPS exerts immunomodulatory activities by activating MAPKs and NF-κB signaling pathways in RAW264.7 macrophages.
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Affiliation(s)
- Chuanqi Xie
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China
| | - Xinying Lin
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China,School of Medicine, Xiamen University, Xiamen, China
| | - Juwu Hu
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China
| | - Shufen Wang
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China
| | - Jing Wu
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China
| | - Wei Xiong
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China,Wei Xiong, Institute of Applied Chemistry, Jiangxi Academy of Sciences, Changdong avenue 7777 Nanchang China.
| | - Lei Wu
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, P.R. China,Lei Wu, Institute of Applied Chemistry, Jiangxi Academy of Sciences, Changdong avenue 7777 Nanchang China.
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15
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Duan Y, Zhang W, Chen X, Wang M, Zhong L, Liu J, Bian W, Zhang S. Genome-wide identification and expression analysis of mitogen-activated protein kinase (MAPK) genes in response to salinity stress in channel catfish (Ictalurus punctatus). JOURNAL OF FISH BIOLOGY 2022; 101:972-984. [PMID: 35818162 DOI: 10.1111/jfb.15158] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The mitogen-activated protein kinase (MAPK) gene family has been systematically described in several fish species, but less so in channel catfish (Ictalurus punctatus), which is an important global aquaculture species. In this study, 16 MAPK genes were identified in the channel catfish genome and classified into three subfamilies based on phylogenetic analysis, including six extracellular signal regulated kinase (ERK) genes, six p38-MAPK genes and four C-Jun N-terminal kinase (JNK) genes. All MAPK genes were distributed unevenly across 10 chromosomes, of which three (IpMAPK8, IpMAPK12 and IpMAPK14) underwent teleost-specific whole genome duplication during evolution. Gene expression profiles in channel catfish during salinity stress were analysed using transcriptome sequencing and qRT-PCR (quantitative reverse transcription PCR). Results from reads per kilobase million (RPKM) analysis showed IpMAPK13, IpMAPK14a and IpMAPK14b genes were differentially expressed when compared with other genes between treatment and control groups. Furthermore, three of these genes were validated by qRT-PCR, of which IpMAPK14a expression levels were significantly upregulated in treatment groups (high and low salinity) when compared with the control group, with the highest expression levels in the low salinity group (P < 0.05). Therefore, IpMAPK14a may have important response roles to salinity stress in channel catfish.
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Affiliation(s)
- Yongqiang Duan
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Wenping Zhang
- College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
| | - Xiaohui Chen
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Minghua Wang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Liqiang Zhong
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Ju Liu
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
| | - Wenji Bian
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Shiyong Zhang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
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16
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Wang N, Li R, Feng B, Cheng Y, Guo Y, Qian H. Chicoric Acid Prevents Neuroinflammation and Neurodegeneration in a Mouse Parkinson’s Disease Model: Immune Response and Transcriptome Profile of the Spleen and Colon. Int J Mol Sci 2022; 23:ijms23042031. [PMID: 35216146 PMCID: PMC8874631 DOI: 10.3390/ijms23042031] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/10/2022] [Accepted: 01/21/2022] [Indexed: 02/05/2023] Open
Abstract
Chicoric acid (CA), a polyphenolic acid compound extracted from chicory and echinacea, possesses antiviral, antioxidative and anti-inflammatory activities. Growing evidence supports the pivotal roles of brain–spleen and brain–gut axes in neurodegenerative diseases, including Parkinson’s disease (PD), and the immune response of the spleen and colon is always the active participant in the pathogenesis and development of PD. In this study, we observe that CA prevented dopaminergic neuronal lesions, motor deficits and glial activation in PD mice, along with the increment in striatal brain-derived neurotrophic factor (BDNF), dopamine (DA) and 5-hydroxyindoleacetic acid (5-HT). Furthermore, CA reversed the level of interleukin-17(IL-17), interferon-gamma (IFN-γ) and transforming growth factor-beta (TGF-β) of PD mice, implicating its regulatory effect on the immunological response of spleen and colon. Transcriptome analysis revealed that 22 genes in the spleen (21 upregulated and 1 downregulated) and 306 genes (190 upregulated and 116 downregulated) in the colon were significantly differentially expressed in CA-pretreated mice. These genes were functionally annotated with GSEA, GO and KEGG pathway enrichment, providing the potential target genes and molecular biological mechanisms for the modulation of CA on the spleen and gut in PD. Remarkably, CA restored some gene expressions to normal level. Our results highlighted that the neuroprotection of CA might be associated with the manipulation of CA on brain–spleen and brain–gut axes in PD.
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Affiliation(s)
- Ning Wang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (N.W.); (Y.C.)
| | - Rui Li
- Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA;
| | - Bainian Feng
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China;
| | - Yuliang Cheng
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (N.W.); (Y.C.)
| | - Yahui Guo
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (N.W.); (Y.C.)
- Correspondence: (Y.G.); (H.Q.)
| | - He Qian
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (N.W.); (Y.C.)
- Correspondence: (Y.G.); (H.Q.)
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17
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DUSP-1 Induced by PGE 2 and PGE 1 Attenuates IL-1β-Activated MAPK Signaling, Leading to Suppression of NGF Expression in Human Intervertebral Disc Cells. Int J Mol Sci 2021; 23:ijms23010371. [PMID: 35008797 PMCID: PMC8745672 DOI: 10.3390/ijms23010371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/25/2021] [Accepted: 12/28/2021] [Indexed: 12/20/2022] Open
Abstract
The molecular mechanism of discogenic low back pain (LBP) involves nonphysiological nerve invasion into a degenerated intervertebral disc (IVD), induced by nerve growth factor (NGF). Selective cyclooxygenase (COX)-2 inhibitors are mainly used in the treatment of LBP, and act by suppressing the inflammatory mediator prostaglandin E2 (PGE2), which is induced by inflammatory stimuli, such as interleukin-1β (IL-1β). However, in our previous in vitro study using cultured human IVD cells, we demonstrated that the induction of NGF by IL-1β is augmented by a selective COX-2 inhibitor, and that PGE2 and PGE1 suppress NGF expression. Therefore, in this study, to elucidate the mechanism of NGF suppression by PGE2 and PGE1, we focused on mitogen-activated protein kinases (MAPKs) and its phosphatase, dual-specificity phosphatase (DUSP)-1. IL-1β-induced NGF expression was altered in human IVD cells by MAPK pathway inhibitors. PGE2 and PGE1 enhanced IL-1β-induced DUSP-1 expression, and suppressed the phosphorylation of MAPKs in human IVD cells. In DUSP-1 knockdown cells established using small interfering RNA, IL-1β-induced phosphorylation of MAPKs was enhanced and prolonged, and NGF expression was significantly enhanced. These results suggest that PGE2 and PGE1 suppress IL-1β-induced NGF expression by suppression of the MAPK signaling pathway, accompanied by increased DUSP-1 expression.
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Synergistic Antiproliferative Effects of All-Trans Retinoic Acid and Paclitaxel on Autosomal Dominant Polycystic Kidney Disease Epithelial Cells. BIOMED RESEARCH INTERNATIONAL 2021; 2021:1242916. [PMID: 34660779 PMCID: PMC8514275 DOI: 10.1155/2021/1242916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/06/2021] [Accepted: 09/16/2021] [Indexed: 11/23/2022]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disorder characterized by uncontrollable epithelial cell growth, cyst formation, and kidney malfunction. In the present study, we investigated the antiproliferative effects of the treatment with the combination of paclitaxel (PAC) and all-trans retinoic acid (ATRA) on ADPKD epithelial cells. Our results show that the combined treatment with 1 nM PAC and 10 nM ATRA significantly suppressed ADPKD cell proliferation (20%), while the treatment with ATRA or PAC alone had no such effect. Treatment with PAC and ATRA induced cell cycle arrest at the G2/M phase and apoptosis by upregulating p53 and caspase-8 expression and increased the intracellular calcium (Ca2+) level possibly by enhancing Ca2+ uptake via plasma membrane channels. In addition, this treatment suppressed extracellular signal-regulated kinase signaling possibly through mitogen-activated protein kinase phosphatase-1 activation. Thus, the combination of PAC and ATRA can be explored as a potential treatment regimen for ADPKD.
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Bermúdez-Muñoz JM, Celaya AM, García-Mato Á, Muñoz-Espín D, Rodríguez-de la Rosa L, Serrano M, Varela-Nieto I. Dual-Specificity Phosphatase 1 (DUSP1) Has a Central Role in Redox Homeostasis and Inflammation in the Mouse Cochlea. Antioxidants (Basel) 2021; 10:1351. [PMID: 34572983 PMCID: PMC8467085 DOI: 10.3390/antiox10091351] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/23/2021] [Indexed: 12/13/2022] Open
Abstract
Stress-activated protein kinases (SAPK) are associated with sensorineural hearing loss (SNHL) of multiple etiologies. Their activity is tightly regulated by dual-specificity phosphatase 1 (DUSP1), whose loss of function leads to sustained SAPK activation. Dusp1 gene knockout in mice accelerates SNHL progression and triggers inflammation, redox imbalance and hair cell (HC) death. To better understand the link between inflammation and redox imbalance, we analyzed the cochlear transcriptome in Dusp1-/- mice. RNA sequencing analysis (GSE176114) indicated that Dusp1-/- cochleae can be defined by a distinct profile of key cellular expression programs, including genes of the inflammatory response and glutathione (GSH) metabolism. To dissociate the two components, we treated Dusp1-/- mice with N-acetylcysteine, and hearing was followed-up longitudinally by auditory brainstem response recordings. A combination of immunofluorescence, Western blotting, enzymatic activity, GSH levels measurements and RT-qPCR techniques were used. N-acetylcysteine treatment delayed the onset of SNHL and mitigated cochlear damage, with fewer TUNEL+ HC and lower numbers of spiral ganglion neurons with p-H2AX foci. N-acetylcysteine not only improved the redox balance in Dusp1-/- mice but also inhibited cytokine production and reduced macrophage recruitment. Our data point to a critical role for DUSP1 in controlling the cross-talk between oxidative stress and inflammation.
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Affiliation(s)
- Jose M. Bermúdez-Muñoz
- Institute for Biomedical Research “Alberto Sols”, Spanish National Research Council-Autonomous University of Madrid (CSIC-UAM), 28029 Madrid, Spain; (A.M.C.); (Á.G.-M.); (L.R.-d.l.R.)
- Rare Diseases Networking Biomedical Research Centre (CIBERER), CIBER, Carlos III Institute of Health, 28029 Madrid, Spain
| | - Adelaida M. Celaya
- Institute for Biomedical Research “Alberto Sols”, Spanish National Research Council-Autonomous University of Madrid (CSIC-UAM), 28029 Madrid, Spain; (A.M.C.); (Á.G.-M.); (L.R.-d.l.R.)
- Rare Diseases Networking Biomedical Research Centre (CIBERER), CIBER, Carlos III Institute of Health, 28029 Madrid, Spain
| | - Ángela García-Mato
- Institute for Biomedical Research “Alberto Sols”, Spanish National Research Council-Autonomous University of Madrid (CSIC-UAM), 28029 Madrid, Spain; (A.M.C.); (Á.G.-M.); (L.R.-d.l.R.)
- Rare Diseases Networking Biomedical Research Centre (CIBERER), CIBER, Carlos III Institute of Health, 28029 Madrid, Spain
| | - Daniel Muñoz-Espín
- CRUK Cambridge Centre Early Detection Programme, Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Cambridge CB2 0XZ, UK;
| | - Lourdes Rodríguez-de la Rosa
- Institute for Biomedical Research “Alberto Sols”, Spanish National Research Council-Autonomous University of Madrid (CSIC-UAM), 28029 Madrid, Spain; (A.M.C.); (Á.G.-M.); (L.R.-d.l.R.)
- Rare Diseases Networking Biomedical Research Centre (CIBERER), CIBER, Carlos III Institute of Health, 28029 Madrid, Spain
- Hospital La Paz Institute for Health Research (IdiPAZ), 28029 Madrid, Spain
| | - Manuel Serrano
- Institute for Research in Biomedicine, Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain;
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
| | - Isabel Varela-Nieto
- Institute for Biomedical Research “Alberto Sols”, Spanish National Research Council-Autonomous University of Madrid (CSIC-UAM), 28029 Madrid, Spain; (A.M.C.); (Á.G.-M.); (L.R.-d.l.R.)
- Rare Diseases Networking Biomedical Research Centre (CIBERER), CIBER, Carlos III Institute of Health, 28029 Madrid, Spain
- Hospital La Paz Institute for Health Research (IdiPAZ), 28029 Madrid, Spain
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Prostaglandin E 2 induces dual-specificity phosphatase-1, thereby attenuating inflammatory genes expression in human osteoarthritic synovial fibroblasts. Prostaglandins Other Lipid Mediat 2021; 154:106550. [PMID: 33857603 DOI: 10.1016/j.prostaglandins.2021.106550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/31/2021] [Accepted: 04/06/2021] [Indexed: 01/23/2023]
Abstract
Characteristic features of osteoarthritis (OA) are joint pain and cartilage degeneration. The degeneration is caused by excess induction of matrix metalloproteinases (MMPs) and the pain is caused by nerve growth factor (NGF)-dependent nerve invasion into synovial tissue in addition to nociceptive pain by prostaglandin (PG)E2. The objective of this study was to clarify the suppressive mechanism of PGE2 on the regulation of MMPs and NGF by focusing on mitogen-activated protein kinases (MAPKs) and their endogenous phosphatase, dual-specificity phosphatase (DUSP)-1 in human synovial fibroblasts. PGE2 strongly increased DUSP-1 and suppressed IL-1β-induced MAPKs phosphorylation. Inhibition of MAPKs by selective inhibitors differentially regulated the IL-1β-induced expression of MMPs and NGF expression. IL-1β-induced MAPKs phosphorylation was prolonged and enhanced in DUSP-1 knockdown cells and the expression of MMPs and NGF was also increased. This study revealed that PGE2 has novel biological activity that suppresses NGF and MMPs expression by inducing DUSP-1 expression.
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21
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A Network Pharmacology Study Based on the Mechanism of Citri Reticulatae Pericarpium-Pinelliae Rhizoma in the Treatment of Gastric Cancer. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6667560. [PMID: 33953786 PMCID: PMC8068544 DOI: 10.1155/2021/6667560] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 03/06/2021] [Accepted: 04/06/2021] [Indexed: 11/19/2022]
Abstract
Objective To explore the mechanism of action of Citri Reticulatae Pericarpium-Pinelliae Rhizoma (CRP-PR) in treating gastric cancer (GC) by using pharmacology network. Methods Based on oral bioavailability and drug-likeness, the main active components of CRP-PR were screened using the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP). DisGeNET Database was used to establish target databases for GC. Cytoscape software was used to construct a visual interactive network diagram of “Active Component-Target” and screen out the key targets. The STRING database was used to construct a protein interaction network. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed on the key targets. Additionally, TCGA and HPA databases were used for key target verification. Results Thirty-seven active components of CRP-PR were screened. The results of network analysis showed that the main components include 8-octadecenoic acid, stigmasterol, ferulic acid, and naringenin of the CRP-PR herb pair. The key targets of the PPI network mainly involved GAPDH, MAPK3, JUN, STAT3, GSK3B, SIRT1, ERBB2, and SMAD2. GO enrichment analysis involves 540 biological processes, 118 cellular components, and 171 molecular functions. CRP-PR components were predicted to exert their therapeutic effect on the tumor signaling pathway, PI3K-Akt signaling pathway, MAPK signaling pathway, and estrogen signaling pathway. The validation of the key genes in the TCGA and HPA database showed that most of the key target verification results were consistent with this article. Conclusion CRP-PR can treat GC by mediating PI3K-Akt signal pathway, MAPK signal pathway, and other biological processes such as tumor cell proliferation, apoptosis, and vascular regeneration, which embodies the synergistic effect of multi-components, multi-targets, and multi-channels, and provides the theoretical basis and research ideas for further study of CRP-PR in treating GC. 8-octadecenoic acid, stigmasterol, ferulic acid, and naringenin may be the material basis for the treatment of GC.
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Xin Y, Tang L, Chen J, Chen D, Wen W, Han F. Inhibition of miR‑101‑3p protects against sepsis‑induced myocardial injury by inhibiting MAPK and NF‑κB pathway activation via the upregulation of DUSP1. Int J Mol Med 2021; 47:20. [PMID: 33448324 PMCID: PMC7849984 DOI: 10.3892/ijmm.2021.4853] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023] Open
Abstract
Numerous studies have found that microRNAs (miRNAs or miRs) are aberrantly expressed when sepsis occurs. The present study aimed to investigate the role of miR-101-3p in sepsis-induced myocardial injury and to elucidate the underlying mechanisms. Models of myocardial injury were established both in vivo and in vitro. The results revealed that miR-101-3p was upregulated in the serum of patients with sepsis-induced cardiomyopathy (SIC) and positively correlated with the levels of pro-inflammatory cytokines (including IL-1β, IL-6 and TNF-α). Subsequently, rats were treated with miR-101-3p inhibitor to suppress miR-101-3p and were then exposed to lipopolysaccharide (LPS). The results revealed that LPS induced marked cardiac dysfunction, apoptosis and inflammation. The inhibition of miR-101-3p markedly attenuated sepsis-induced myocardial injury by attenuating apoptosis and the expression of pro-inflammatory cytokines. Mechanistically, dual specificity phosphatase-1 (DUSP1) was found to be a functional target of miR-101-3p. The downregulation of miR-101-3p led to the overexpression of DUSP1, and the inactivation of the MAPK p38 and NF-κB pathways. Moreover, blocking DUSP1 by short hairpin RNA against DUSP1 (sh-DUSP1) significantly reduced the myocardial protective effects mediated by the inhibition of miR-101-3p. Collectively, the findings of the present study demonstrate that the inhibition of miR-101-3p exerts cardioprotective effects by suppressing MAPK p38 and NF-κB pathway activation, and thus attenuating inflammation and apoptosis dependently by enhancing DUSP1 expression.
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Affiliation(s)
- Ye Xin
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Li Tang
- Department of Gastroenterology, Xinqiao Hospital of Army Medical University, Chongqing 400037, P.R. China
| | - Jing Chen
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Dong Chen
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Wen Wen
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Fugang Han
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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Dedobbeleer M, Willems E, Lambert J, Lombard A, Digregorio M, Lumapat PN, Di Valentin E, Freeman S, Goffart N, Scholtes F, Rogister B. MKP1 phosphatase is recruited by CXCL12 in glioblastoma cells and plays a role in DNA strand breaks repair. Carcinogenesis 2020; 41:417-429. [PMID: 31504251 DOI: 10.1093/carcin/bgz151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/10/2019] [Accepted: 08/29/2019] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most frequent and aggressive primary tumor in the central nervous system. Previously, the secretion of CXCL12 in the brain subventricular zones has been shown to attract GBM cells and protect against irradiation. However, the exact molecular mechanism behind this radioprotection is still unknown. Here, we demonstrate that CXCL12 modulates the phosphorylation of MAP kinases and their regulator, the nuclear MAP kinase phosphatase 1 (MKP1). We further show that MKP1 is able to decrease GBM cell death and promote DNA repair after irradiation by regulating major apoptotic players, such as Jun-N-terminal kinase, and by stabilizing the DNA repair protein RAD51. Increases in MKP1 levels caused by different corticoid treatments should be reexamined for GBM patients, particularly during their radiotherapy sessions, in order to prevent or to delay the relapses of this tumor.
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Affiliation(s)
- Matthias Dedobbeleer
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Estelle Willems
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Jeremy Lambert
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Arnaud Lombard
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Marina Digregorio
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Paul Noel Lumapat
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | | | - Stephen Freeman
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium
| | - Nicolas Goffart
- The T&P Bohnenn Laboratory for Neuro-Oncology, Department of Neurosurgery, UMC Utrecht, Utrecht, The Netherlands
| | - Felix Scholtes
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurosurgery, CHU of Liège, Liège, Belgium
| | - Bernard Rogister
- Laboratory of Nervous System Diseases and Therapy, GIGA-Neuroscience, University of Liège, Liège, Belgium.,Department of Neurology, CHU of Liège, Liège, Belgium
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ERK Dephosphorylation through MKP1 Deacetylation by SIRT1 Attenuates RAS-Driven Tumorigenesis. Cancers (Basel) 2020; 12:cancers12040909. [PMID: 32276460 PMCID: PMC7225992 DOI: 10.3390/cancers12040909] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/02/2020] [Indexed: 11/17/2022] Open
Abstract
The role of Situin 1 (SIRT1) in tumorigenesis is still controversial due to its wide range of substrates, including both oncoproteins and tumor suppressors. A recent study has demonstrated that SIRT1 interferes in the Kirsten rat sarcoma viral oncogene homolog (KRAS)-driven activation of the Raf-mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) kinase (MEK)-ERK pathway, thereby inhibiting tumorigenesis. However, the molecular mechanism of SIRT1 as a tumor suppressor in RAS-driven tumorigenesis has been less clearly determined. This study presents evidence that the ectopic expression of SIRT1 attenuates RAS- or MEK-driven ERK activation and reduces cellular proliferation and transformation in vitro. The attenuation of ERK activation by SIRT1 results from prompt dephosphorylation of ERK, while MEK activity remains unchanged. We identified that MKP1, a dual specific phosphatase for MAPK, was deacetylated by SIRT1. Deacetylation of MKP1 by direct interaction with SIRT1 increased the binding affinity to ERK which in turn facilitated inactivation of ERK. Taken together, these results suggest that SIRT1 would act as a tumor suppressor by modulating RAS-driven ERK activity through MKP1 deacetylation.
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25
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Takahashi M, Kinugawa S, Takada S, Kakutani N, Furihata T, Sobirin MA, Fukushima A, Obata Y, Saito A, Ishimori N, Iwabuchi K, Tsutsui H. The disruption of invariant natural killer T cells exacerbates cardiac hypertrophy and failure caused by pressure overload in mice. Exp Physiol 2020; 105:489-501. [PMID: 31957919 DOI: 10.1113/ep087652] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 01/17/2020] [Indexed: 12/18/2022]
Abstract
NEW FINDINGS What is the central question of this study? We questioned whether the disruption of invariant natural killer T (iNKT) cells exacerbates left ventricular (LV) remodelling and heart failure after transverse aortic constriction in mice. What are the main findings and their importance? Pressure overload induced by transverse aortic constriction increased the infiltration of iNKT cells in mouse hearts. The disruption of iNKT cells exacerbated LV remodelling and hastened the transition from hypertrophy to heart failure, in association with the activation of mitogen-activated protein kinase signalling. Activation of iNKT cells modulated the immunological balance in this process and played a protective role against LV remodelling and failure. ABSTRACT Chronic inflammation is involved in the development of cardiac remodelling and heart failure (HF). Invariant natural killer T (iNKT) cells, a subset of T lymphocytes, have been shown to produce various cytokines and orchestrate tissue inflammation. The pathophysiological role of iNKT cells in HF caused by pressure overload has not been studied. In the present study, we investigated whether the disruption of iNKT cells affected this process in mice. Transverse aortic constriction (TAC) and a sham operation were performed in male C57BL/6J wild-type (WT) and iNKT cell-deficient Jα18 knockout (KO) mice. The infiltration of iNKT cells was increased after TAC. The disruption of iNKT cells exacerbated left ventricular (LV) remodelling and hastened the transition to HF after TAC. Histological examinations also revealed that the disruption of iNKT cells induced greater myocyte hypertrophy and a greater increase in interstitial fibrosis after TAC. The expressions of interleukin-10 and tumour necrosis factor-α mRNA and their ratio in the LV after TAC were decreased in the KO compared with WT mice, which might indicate that the disruption of iNKT cells leads to an imbalance between T-helper type 1 and type 2 cytokines. The phosphorylation of extracellular signal-regulated kinase was significantly increased in the KO mice. The disruption of iNKT cells exacerbated the development of cardiac remodelling and HF after TAC. The activation of iNKT cells might play a protective role against HF caused by pressure overload. Targeting the activation of iNKT cells might thus be a promising candidate as a new therapeutic strategy for HF.
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Affiliation(s)
- Masashige Takahashi
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shintaro Kinugawa
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shingo Takada
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoya Kakutani
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takaaki Furihata
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | | | - Arata Fukushima
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshikuni Obata
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Akimichi Saito
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoki Ishimori
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kazuya Iwabuchi
- Department of Immunobiology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Hiroyuki Tsutsui
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
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Wang L, Chang JH, Buckley AF, Spurney RF. Knockout of TRPC6 promotes insulin resistance and exacerbates glomerular injury in Akita mice. Kidney Int 2020; 95:321-332. [PMID: 30665571 DOI: 10.1016/j.kint.2018.09.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 09/22/2018] [Accepted: 09/27/2018] [Indexed: 12/17/2022]
Abstract
Gain-of-function mutations in TRPC6 cause familial focal segmental glomerulosclerosis, and TRPC6 is upregulated in glomerular diseases including diabetic kidney disease. We studied the effect of systemic TRPC6 knockout in the Akita model of type 1 diabetes. Knockout of TRPC6 inhibited albuminuria in Akita mice at 12 and 16 weeks of age, but this difference disappeared by 20 weeks. Knockout of TRPC6 also reduced tubular injury in Akita mice; however, mesangial expansion was significantly increased. Hyperglycemia and blood pressure were similar between TRPC6 knockout and wild-type Akita mice, but knockout mice were more insulin resistant. In cultured podocytes, knockout of TRPC6 inhibited expression of the calcium/calcineurin responsive gene insulin receptor substrate 2 and decreased insulin responsiveness. Insulin resistance is reported to promote diabetic kidney disease independent of blood glucose levels. While the mechanisms are not fully understood, insulin activates both Akt2 and ERK, which inhibits apoptosis signal regulated kinase 1 (ASK1)-p38-induced apoptosis. In cultured podocytes, hyperglycemia stimulated p38 signaling and induced apoptosis, which was reduced by insulin and ASK1 inhibition and enhanced by Akt or ERK inhibition. Glomerular p38 signaling was increased in TRPC6 knockout Akita mice and was associated with enhanced expression of the p38 gene target cyclooxygenase 2. These data suggest that knockout of TRPC6 in Akita mice promotes insulin resistance and exacerbates glomerular disease independent of hyperglycemia.
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Affiliation(s)
- Liming Wang
- Division of Nephrology, Department of Medicine, Duke University Health System, Durham, North Carolina, USA
| | - Jae-Hyung Chang
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York, USA
| | - Anne F Buckley
- Department of Pathology, Duke University Medical Center, Durham, North Carolina, USA
| | - Robert F Spurney
- Division of Nephrology, Department of Medicine, Duke University Health System, Durham, North Carolina, USA; Durham VA Medical Center, Durham, North Carolina, USA.
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Koyanagi M, Arimura Y. Comparative Expression Analysis of Stress-Inducible Genes in Murine Immune Cells. Immunol Invest 2019; 49:907-925. [PMID: 31833438 DOI: 10.1080/08820139.2019.1702673] [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: 10/25/2022]
Abstract
Background: Psychological stress affects the immune system. Upon stress occurrence, glucocorticoid is released that binds to the glucocorticoid receptor and regulates gene expression. Thus, we aimed to examine the stress-induced immunomodulatory mechanisms by investigating the expression patterns of stress-inducible genes in murine immune cells. Methods: BALB/c, C57BL/6, glucocorticoid-receptor congenic mice, and corticotropin-releasing hormone (CRH)-deficient mice were exposed to synthetic glucocorticoid, dexamethasone, or placed under a restraint condition. The expression level of stress-related genes, such as Rtp801, Gilz, Mkp-1, Bnip3, and Trp53inp1 was measured in the immune cells in these mice. Results: Short restraint stress induced Rtp801 and Gilz expressions that were higher in the spleen of BALB/c mice than those in C57BL/6 mice. Mkp-1 expression increased equally in these two strains, despite the difference in the glucocorticoid level. These three genes induced by short restraint stress were not induced in the CRH-deficient mice. In contrast, Bnip3 and Trp53inp1 were only upregulated upon longer restraint events. In the thymus, Trp53inp1 expression was induced upon short restraint stress, whereas Gilz expression constantly increased upon short and repetitive restraint stresses. Conclusion: These results suggest that singular and repetitive bouts of stress lead to differential gene expression in mice and stress-induced gene expression in thymocytes is distinct from that observed in splenocytes. Gilz, Rtp801, and Mkp-1 genes induced by short restraint stress are dependent on CRH in the spleen.
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Affiliation(s)
- Madoka Koyanagi
- Department of Host Defense for Animals, School of Animal Science, Nippon Veterinary and Life Science University , Tokyo, Japan
| | - Yutaka Arimura
- Department of Host Defense for Animals, School of Animal Science, Nippon Veterinary and Life Science University , Tokyo, Japan
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28
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Han B, Yuan Y, Shi L, Li Y, Liu L, Sun D. Identification of single nucleotide polymorphisms of PIK3R1 and DUSP1 genes and their genetic associations with milk production traits in dairy cows. J Anim Sci Biotechnol 2019; 10:81. [PMID: 31709048 PMCID: PMC6833155 DOI: 10.1186/s40104-019-0392-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/06/2019] [Indexed: 01/15/2023] Open
Abstract
Background Previously, phosphoinositide-3-kinase regulatory subunit 1 (PIK3R1) and dual specificity phosphatase 1 (DUSP1) were identified as promising candidate genes for milk production traits due to their being differentially expressed between the dry period and the peak of lactation in livers of dairy cows. Hence, in this study, the single nucleotide polymorphisms (SNPs) of PIK3R1 and DUSP1 genes were identified and their genetic associations with milk yield, fat yield, fat percentage, protein yield, and protein percentage, were investigated using 1067 Chinese Holstein cows from 40 sire families. Results By re-sequencing the entire coding region and 2000 bp of the 5′ and 3′ flanking regions of the two genes, one SNP in the 5′ untranslated region (UTR), three in the 3′ UTR, and two in the 3′ flanking region of PIK3R1 were identified, and one in the 5′ flanking region, one in the 3′ UTR, and two in the 3′ flanking region of DUSP1 were found. Subsequent single-locus association analyses showed that five SNPs in PIK3R1, rs42590258, rs210389799, rs208819656, rs41255622, rs133655926, and rs211408208, and four SNPs in DUSP1, rs207593520, rs208460068, rs209154772, and rs210000760, were significantly associated with milk, fat and protein yields in the first or second lactation (P values ≤ 0.0001 and 0.0461). In addition, by the Haploview 4.2 software, the six and four SNPs in PIK3R1 and DUSP1 respectively formed one haplotype block, and the haplotype-based association analyses showed significant associations between their haplotype combinations and the milk traits in both two lactations (P values ≤ 0.0001 and 0.0364). One SNP, rs207593520(T/G), was predicted to alter the transcription factor binding sites (TFBSs) in the 5′ flanking region of DUSP1. Further, the dual-luciferase assay showed that the transcription activity of allele T in rs207593520 was significantly higher than that of allele G, suggesting the activation of transcriptional activity of DUSP1 gene by allele T of rs207593520. Thus, the rs207593520 SNP was highlighted as a potential causal mutation that should be further verified. Conclusions We demonstrated novel and significant genetic effects of the PIK3R1 and DUSP1 genes on milk production traits in dairy cows, and our findings provide information for use in dairy cattle breeding.
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Affiliation(s)
- Bo Han
- 1Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193 China
| | - Yuwei Yuan
- 1Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193 China
| | - Lijun Shi
- 1Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193 China
| | - Yanhua Li
- 1Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193 China.,Beijing Dairy Cattle Center, Beijing, 100192 China
| | - Lin Liu
- Beijing Dairy Cattle Center, Beijing, 100192 China
| | - Dongxiao Sun
- 1Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193 China
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29
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Jaafaru MS, Nordin N, Rosli R, Shaari K, Bako HY, Saad N, Noor NM, Abdull Razis AF. Neuroprotective effects of glucomoringin-isothiocyanate against H 2O 2-Induced cytotoxicity in neuroblastoma (SH-SY5Y) cells. Neurotoxicology 2019; 75:89-104. [PMID: 31521693 DOI: 10.1016/j.neuro.2019.09.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 09/07/2019] [Accepted: 09/09/2019] [Indexed: 12/26/2022]
Abstract
Neurodegenerative diseases (NDDs) are pathological conditions characterised by progressive damage of neuronal cells leading to eventual loss of structure and function of the cells. Due to implication of multi-systemic complexities of signalling pathways in NDDs, the causes and preventive mechanisms are not clearly delineated. The study was designed to investigate the potential signalling pathways involved in neuroprotective activities of purely isolated glucomoringin isothiocyanate (GMG-ITC) against H2O2-induced cytotoxicity in neuroblastoma (SH-SY5Y) cells. GMG-ITC was isolated from Moringa oleifera seeds, and confirmed with NMR and LC-MS based methods. Gene expression analysis of phase II detoxifying markers revealed significant increase in the expression of all the genes involved, due to GMG-ITC pre-treatment. GMG-ITC also caused significant decreased in the expression of NF-kB, BACE1, APP and increased the expressions of IkB and MAPT tau genes in the differentiated cells as confirmed by multiplex genetic system analysis. The effect was reflected on the expressed proteins in the differentiated cells, where GMG-ITC caused increased in expression level of Nrf2, SOD-1, NQO1, p52 and c-Rel of nuclear factor erythroid factor 2 (Nrf2) and nuclear factor kappa-B (NF-kB) pathways respectively. The findings revealed the potential of GMG-ITC to abrogate oxidative stress-induced neurodegeneration through Nrf2 and NF-kB signalling pathways.
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Affiliation(s)
- Mohammed Sani Jaafaru
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Department of Biochemistry, Kaduna State University, Main Campus, PMB 2339, Kaduna, Nigeria.
| | - Norshariza Nordin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Rozita Rosli
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Khozirah Shaari
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Hauwa'u Yakubu Bako
- Department of Biochemistry, Kaduna State University, Main Campus, PMB 2339, Kaduna, Nigeria.
| | - Norazalina Saad
- UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Noramaliza Mohd Noor
- Department of Imaging, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Ahmad Faizal Abdull Razis
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
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GP78 Cooperates with Dual-Specificity Phosphatase 1 To Stimulate Epidermal Growth Factor Receptor-Mediated Extracellular Signal-Regulated Kinase Signaling. Mol Cell Biol 2019; 39:MCB.00485-18. [PMID: 31061093 DOI: 10.1128/mcb.00485-18] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/20/2019] [Indexed: 12/15/2022] Open
Abstract
GP78 is an autocrine motility factor (AMF) receptor (AMFR) with E3 ubiquitin ligase activity that plays a significant role in tumor cell proliferation, motility, and metastasis. Aberrant extracellular signal-regulated kinase (ERK) activation via receptor tyrosine kinases promotes tumor proliferation and invasion. The activation of GP78 leads to ERK activation, but its underlying mechanism is not fully understood. Here, we show that GP78 is required for epidermal growth factor receptor (EGFR)-mediated ERK activation. On one hand, GP78 interacts with and promotes the ubiquitination and subsequent degradation of dual-specificity phosphatase 1 (DUSP1), an endogenous negative regulator of mitogen-activated protein kinases (MAPKs), resulting in ERK activation. On the other hand, GP78 maintains the activation status of EGFR, as evidenced by the fact that EGF fails to induce EGFR phosphorylation in GP78-deficient cells. By the regulation of both EGFR and ERK activation, GP78 promotes cell proliferation, motility, and invasion. Therefore, this study identifies a previously unknown signaling pathway by which GP78 stimulates ERK activation via DUSP1 degradation to mediate EGFR-dependent cancer cell proliferation and invasion.
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Ye P, Liu J, Xu W, Liu D, Ding X, Le S, Zhang H, Chen S, Chen M, Xia J. Dual-Specificity Phosphatase 26 Protects Against Nonalcoholic Fatty Liver Disease in Mice Through Transforming Growth Factor Beta-Activated Kinase 1 Suppression. Hepatology 2019; 69:1946-1964. [PMID: 30582764 PMCID: PMC6594223 DOI: 10.1002/hep.30485] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 12/12/2018] [Indexed: 12/13/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD), which has a wide global distribution, includes different stages ranging from simple steatosis to nonalcoholic steatohepatitis, advanced fibrosis, and liver cirrhosis according to the degree of severity. Chronic low-grade inflammation, insulin resistance, and lipid accumulation are the leading causes of NAFLD. To date, no effective medicine for NAFLD has been approved by governmental agencies. Our study demonstrated that the expression of dual-specificity phosphatase 26 (Dusp26), a member of the Dusp protein family, was decreased in the liver tissue of mice with hepatic steatosis and genetically obese (ob/ob) mice. In our study, hepatic steatosis, inflammatory responses, and insulin resistance were exacerbated in liver-specific Dusp26-knockout (KO) mice but ameliorated in liver-specific Dusp26-transgenic mice induced by a high-fat diet. In addition, the degree of liver fibrosis was aggravated in high-fat high-cholesterol diet-induced Dusp26-KO mice. We further found that the binding of Dusp26 to transforming growth factor beta-activated kinase 1 (TAK1) to block the phosphorylation of TAK1 regulated the TAK1-p38/c-Jun NH2-terminal kinase signaling axis to alleviate hepatic steatosis and metabolic disturbance. Conclusion: These findings suggest that Dusp26 is a good TAK1-dependent therapeutic target for NAFLD.
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Affiliation(s)
- Ping Ye
- Department of CardiologyThe Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Jijun Liu
- Department of CardiologyThe Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Wuping Xu
- Department of NeurologyThe Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Denghai Liu
- Department of CardiologyThe Central Hospital of Wuhan, School of Medicine, Jianghan UniversityWuhanChina
| | - Xiangchao Ding
- Department of Cardiovascular SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Sheng Le
- Department of Cardiovascular SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Hao Zhang
- Department of Cardiovascular SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Shanshan Chen
- Department of Cardiovascular SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Manhua Chen
- Department of CardiologyThe Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
| | - Jiahong Xia
- Department of Cardiovascular SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanChina
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Piazzon MC, Mladineo I, Naya-Català F, Dirks RP, Jong-Raadsen S, Vrbatović A, Hrabar J, Pérez-Sánchez J, Sitjà-Bobadilla A. Acting locally - affecting globally: RNA sequencing of gilthead sea bream with a mild Sparicotyle chrysophrii infection reveals effects on apoptosis, immune and hypoxia related genes. BMC Genomics 2019; 20:200. [PMID: 30866816 PMCID: PMC6416957 DOI: 10.1186/s12864-019-5581-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 03/03/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Monogenean flatworms are the main fish ectoparasites inflicting serious economic losses in aquaculture. The polyopisthocotylean Sparicotyle chrysophrii parasitizes the gills of gilthead sea bream (GSB, Sparus aurata) causing anaemia, lamellae fusion and sloughing of epithelial cells, with the consequent hypoxia, emaciation, lethargy and mortality. Currently no preventive or curative measures against this disease exist and therefore information on the host-parasite interaction is crucial to find mitigation solutions for sparicotylosis. The knowledge about gene regulation in monogenean-host models mostly comes from freshwater monopysthocotyleans and almost nothing is known about polyopisthocotyleans. The current study aims to decipher the host response at local (gills) and systemic (spleen, liver) levels in farmed GSB with a mild natural S. chrysophrii infection by transcriptomic analysis. RESULTS Using Illumina RNA sequencing and transcriptomic analysis, a total of 2581 differentially expressed transcripts were identified in infected fish when compared to uninfected controls. Gill tissues in contact with the parasite (P gills) displayed regulation of fewer genes (700) than gill portions not in contact with the parasite (NP gills) (1235), most likely due to a local silencing effect of the parasite. The systemic reaction in the spleen was much higher than that at the parasite attachment site (local) (1240), and higher than in liver (334). NP gills displayed a strong enrichment of genes mainly related to immune response and apoptosis. Processes such as apoptosis, inflammation and cell proliferation dominated gills, whereas inhibition of apoptosis, autophagy, platelet activation, signalling and aggregation, and inflammasome were observed in spleen. Proteasome markers were increased in all tissues, whereas hypoxia-related genes were down-regulated in gills and spleen. CONCLUSIONS Contrasting forces seem to be acting at local and systemic levels. The splenic down-regulation could be part of a hypometabolic response, to counteract the hypoxia induced by the parasite damage to the gills and to concentrate the energy on defence and repair responses. Alternatively, it can be also interpreted as the often observed action of helminths to modify host immunity in its own interest. These results provide the first toolkit for future studies towards understanding and management of this parasitosis.
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Affiliation(s)
- M Carla Piazzon
- Fish Pathology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain.
| | | | - Fernando Naya-Català
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain.,Biotechvana, Parc Cientific, Universitat de Valencia, Valencia, Spain
| | - Ron P Dirks
- Future Genomics Technology, Leiden, The Netherlands
| | | | | | - Jerko Hrabar
- Institute of Oceanography and Fisheries, Split, Croatia
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain
| | - Ariadna Sitjà-Bobadilla
- Fish Pathology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain
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33
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Nunes-Xavier CE, Zaldumbide L, Aurtenetxe O, López-Almaraz R, López JI, Pulido R. Dual-Specificity Phosphatases in Neuroblastoma Cell Growth and Differentiation. Int J Mol Sci 2019; 20:ijms20051170. [PMID: 30866462 PMCID: PMC6429076 DOI: 10.3390/ijms20051170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/01/2019] [Accepted: 03/01/2019] [Indexed: 12/19/2022] Open
Abstract
Dual-specificity phosphatases (DUSPs) are important regulators of neuronal cell growth and differentiation by targeting proteins essential to neuronal survival in signaling pathways, among which the MAP kinases (MAPKs) stand out. DUSPs include the MAPK phosphatases (MKPs), a family of enzymes that directly dephosphorylate MAPKs, as well as the small-size atypical DUSPs, a group of low molecular-weight enzymes which display more heterogeneous substrate specificity. Neuroblastoma (NB) is a malignancy intimately associated with the course of neuronal and neuroendocrine cell differentiation, and constitutes the source of more common extracranial solid pediatric tumors. Here, we review the current knowledge on the involvement of MKPs and small-size atypical DUSPs in NB cell growth and differentiation, and discuss the potential of DUSPs as predictive biomarkers and therapeutic targets in human NB.
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Affiliation(s)
- Caroline E Nunes-Xavier
- Biomarkers in Cancer Unit, Biocruces-Bizkaia Health Research Institute, Barakaldo, Bizkaia 48903, Spain.
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital HF Radiumhospitalet, Oslo 0424, Norway.
| | - Laura Zaldumbide
- Department of Pathology, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Bizkaia 48903, Spain.
| | - Olaia Aurtenetxe
- Biomarkers in Cancer Unit, Biocruces-Bizkaia Health Research Institute, Barakaldo, Bizkaia 48903, Spain.
| | - Ricardo López-Almaraz
- Pediatric Oncology and Hematology, Cruces University Hospital, Barakaldo, Bizkaia 48903, Spain.
| | - José I López
- Biomarkers in Cancer Unit, Biocruces-Bizkaia Health Research Institute, Barakaldo, Bizkaia 48903, Spain.
- Department of Pathology, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Bizkaia 48903, Spain.
| | - Rafael Pulido
- Biomarkers in Cancer Unit, Biocruces-Bizkaia Health Research Institute, Barakaldo, Bizkaia 48903, Spain.
- IKERBASQUE, Basque Foundation for Science, Bilbao 48011, Spain.
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Qi Y, Zhao W, Wang Z, Xie Q, Cao J, Meng X. Cross regulation of signaling pathways in gastrointestinal stromal tumor. Oncol Lett 2018; 16:6770-6776. [PMID: 30405821 PMCID: PMC6202513 DOI: 10.3892/ol.2018.9494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 09/04/2018] [Indexed: 12/29/2022] Open
Abstract
The Sonic hedgehog (Shh) signaling pathway may be interrelated with other signaling pathways, such as the phosphoinositide 3-kinase (PI3K) and mitogen-activated protein kinase (MAPK) pathways in gastrointestinal stromal tumor (GIST). The present study investigated the interaction among Shh, PI3K and MAPK signaling pathways in GIST cells. The expression of PI3K, MAPK and Shh signaling pathways in GIST-H1 cells were upregulated by endothelial growth factor (EGF) and recombinant Shh (N-shh) stimulation, and were downregulated by specific inhibitors of each signaling pathway. The proliferation rate of GIST-H1 cells were significantly increased under EGF or N-shh treatment (P<0.01). In addition, this effect was partially prevented by the pretreatment of the inhibitors of these signaling pathways. In summary, a cross regulation exists among the Shh, PI3K and MAPK signaling pathways in GIST-H-1 cells. The combined use of the inhibitors of these signaling pathways is a potentially novel option for GIST targeted therapy.
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Affiliation(s)
- Yijun Qi
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Wendi Zhao
- Department of Pathology, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Zhengguang Wang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Qingsong Xie
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Jing Cao
- Laboratory Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xiangling Meng
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
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35
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Sun Y, Chu Q, Zhao X, Zhou Z, Bi D, Xu T. microRNA-375 modulates the NF-κB pathway in miiuy croaker by targeting DUSP1 gene. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 86:196-202. [PMID: 29746983 DOI: 10.1016/j.dci.2018.05.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/06/2018] [Accepted: 05/06/2018] [Indexed: 06/08/2023]
Abstract
microRNAs (miRNAs) are highly conserved, small non-coding endogenous molecule, and can participate in a variety of biological processes in organisms such as development, growth and immune response. Dual-Specificity Phosphatases (DUSPs) are enzymes that can remove phosphate groups from phosphatases. Research found that DUSP1 is an important molecule in the process of MAPK regulation. However, as a significant regulatory factor, the study of DUSP1 was very few in fish. Consequently, in this study, the regulatory role of miRNAs on DUSP1 has been verified through dual-luciferase reporter assay and western blotting analysis. Furethermore, we found that miR-375 mimics and pre-miR-375 plasmid can negatively regulate the target gene DUSP1 in miiuy croaker through combining with 3'untranslated region of DUSP1 gene. These experiment results directly indicate the negative regulatory function of miR-375 to DUSP1. Moreover, miR-375 can negatively regulate NF-κB signaling pathway via target to DUSP1. This study can increase our knowledge and help us to understand complexity of genomic and complex gene expression regulatory networks in teleost fish.
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Affiliation(s)
- Yuena Sun
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, 201306, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 201306, China.
| | - Qing Chu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, 201306, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 201306, China
| | - Xueyan Zhao
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China
| | - Zhenzhen Zhou
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China
| | - Dekun Bi
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China
| | - Tianjun Xu
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, 201306, China
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36
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Kim E, Yoon JY, Lee J, Jeong D, Park JG, Hong YH, Kim JH, Aravinthan A, Kim JH, Cho JY. TANK-binding kinase 1 and Janus kinase 2 play important roles in the regulation of mitogen-activated protein kinase phosphatase-1 expression after toll-like receptor 4 activation. J Cell Physiol 2018; 233:8790-8801. [PMID: 29797567 DOI: 10.1002/jcp.26787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 04/30/2018] [Indexed: 12/13/2022]
Abstract
Inflammation is a response that protects the body from pathogens. Through several inflammatory signaling pathways mediated by various families of transcription factors, such as nuclear factor-κB (NF-κB), activator protein-1 (AP-1), interferon regulatory factors (IRFs), and signal transducers and activators of transcription (STATs), various inflammatory cytokines and chemokines are induced and inflammatory responses are boosted. Simultaneously, inhibitory systems are activated and provide negative feedback. A typical mechanism by which this process occurs is that inflammatory signaling molecules upregulate mitogen-activated protein kinase phosphatase-1 (MKP1) expression. Here, we investigated how kinases regulate MKP1 expression in lipopolysaccharide-triggered cascades. We found that p38 and c-Jun N-terminal kinase (JNK) inhibitors decreased MKP1 expression. Using specific inhibitors, gene knockouts, and gene knockdowns, we also found that tumor necrosis factor receptor-associated factor family member-associated nuclear factor κB activator (TANK)-binding kinase 1 (TBK1) and Janus kinase 2 (JAK2) are involved in the induction of MKP1 expression. By analyzing JAK2-induced activation of STATs, STAT3-specific inhibitors, promoter binding sites, and STAT3-/- cells, we found that STAT3 is directly linked to TBK1-mediated and JAK2-mediated induction of MKP1 expression. Our data suggest that MKP1 expression can be differentially regulated by p38, JNK, and the TBK1-JAK2-STAT3 pathway after activation of toll-like receptor 4 (TLR4). These data also imply crosstalk between the AP-1 pathway and the IRF3 and STAT3 pathways.
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Affiliation(s)
- Eunji Kim
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Ju Y Yoon
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea.,Central Research Institute, Dongkwang Pharmaceutical Company, Seoul, Korea
| | - Jongsung Lee
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Deok Jeong
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Jae G Park
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Yo H Hong
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Ji H Kim
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Adithan Aravinthan
- Department of Physiology, College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jong-Hoon Kim
- Department of Physiology, College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jae Y Cho
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
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37
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Juszczak GR, Stankiewicz AM. Glucocorticoids, genes and brain function. Prog Neuropsychopharmacol Biol Psychiatry 2018; 82:136-168. [PMID: 29180230 DOI: 10.1016/j.pnpbp.2017.11.020] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/18/2017] [Accepted: 11/23/2017] [Indexed: 01/02/2023]
Abstract
The identification of key genes in transcriptomic data constitutes a huge challenge. Our review of microarray reports revealed 88 genes whose transcription is consistently regulated by glucocorticoids (GCs), such as cortisol, corticosterone and dexamethasone, in the brain. Replicable transcriptomic data were combined with biochemical and physiological data to create an integrated view of the effects induced by GCs. The most frequently reported genes were Errfi1 and Ddit4. Their up-regulation was associated with the altered transcription of genes regulating growth factor and mTORC1 signaling (Gab1, Tsc22d3, Dusp1, Ndrg2, Ppp5c and Sesn1) and progression of the cell cycle (Ccnd1, Cdkn1a and Cables1). The GC-induced reprogramming of cell function involves changes in the mRNA level of genes responsible for the regulation of transcription (Klf9, Bcl6, Klf15, Tle3, Cxxc5, Litaf, Tle4, Jun, Sox4, Sox2, Sox9, Irf1, Sall2, Nfkbia and Id1) and the selective degradation of mRNA (Tob2). Other genes are involved in the regulation of metabolism (Gpd1, Aldoc and Pdk4), actin cytoskeleton (Myh2, Nedd9, Mical2, Rhou, Arl4d, Osbpl3, Arhgef3, Sdc4, Rdx, Wipf3, Chst1 and Hepacam), autophagy (Eva1a and Plekhf1), vesicular transport (Rhob, Ehd3, Vps37b and Scamp2), gap junctions (Gjb6), immune response (Tiparp, Mertk, Lyve1 and Il6r), signaling mediated by thyroid hormones (Thra and Sult1a1), calcium (Calm2), adrenaline/noradrenaline (Adcy9 and Adra1d), neuropeptide Y (Npy1r) and histamine (Hdc). GCs also affected genes involved in the synthesis of polyamines (Azin1) and taurine (Cdo1). The actions of GCs are restrained by feedback mechanisms depending on the transcription of Sgk1, Fkbp5 and Nr3c1. A side effect induced by GCs is increased production of reactive oxygen species. Available data show that the brain's response to GCs is part of an emergency mode characterized by inactivation of non-core activities, restrained inflammation, restriction of investments (growth), improved efficiency of energy production and the removal of unnecessary or malfunctioning cellular components to conserve energy and maintain nutrient supply during the stress response.
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Affiliation(s)
- Grzegorz R Juszczak
- Department of Animal Behavior, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552 Magdalenka, Poland.
| | - Adrian M Stankiewicz
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552 Magdalenka, Poland
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38
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Gu Y, Ma LJ, Bai XX, Jie J, Zhang XF, Chen D, Li XP. Mitogen-activated protein kinase phosphatase 1 protects PC12 cells from amyloid beta-induced neurotoxicity. Neural Regen Res 2018; 13:1842-1850. [PMID: 30136701 PMCID: PMC6128043 DOI: 10.4103/1673-5374.238621] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The mitogen-activated protein kinase (MAPK) signaling pathway plays an important role in the regulation of cell growth, proliferation, differentiation, transformation and death. Mitogen-activated protein kinase phosphatase 1 (MKP1) has an inhibitory effect on the p38MAPK and JNK pathways, but it is unknown whether it plays a role in Aβ-induced oxidative stress and neuronal inflammation. In this study, PC12 cells were infected with MKP1 shRNA, MKP1 lentivirus or control lentivirus for 12 hours, and then treated with 0.1, 1, 10 or 100 μM amyloid beta 42 (Aβ42). The cell survival rate was measured using the cell counting kit-8 assay. MKP1, tumor necrosis factor-alpha (TNF-α) and interleukin-1β (IL-1β) mRNA expression levels were analyzed using quantitative real time-polymerase chain reaction. MKP1 and phospho-c-Jun N-terminal kinase (JNK) expression levels were assessed using western blot assay. Reactive oxygen species (ROS) levels were detected using 2′,7′-dichlorofluorescein diacetate. Mitochondrial membrane potential was measured using flow cytometry. Superoxide dismutase activity and malondialdehyde levels were evaluated using the colorimetric method. Lactate dehydrogenase activity was measured using a microplate reader. Caspase-3 expression levels were assessed by enzyme-linked immunosorbent assay. Apoptosis was evaluated using the terminal deoxynucleotidyl transferase dUTP nick end labeling method. MKP1 overexpression inhibited Aβ-induced JNK phosphorylation and the increase in ROS levels. It also suppressed the Aβ-induced increase in TNF-α and IL-1β levels as well as apoptosis in PC12 cells. In contrast, MKP1 knockdown by RNA interference aggravated Aβ-induced oxidative stress, inflammation and cell damage in PC12 cells. Furthermore, the JNK-specific inhibitor SP600125 abolished this effect of MKP1 knockdown on Aβ-induced neurotoxicity. Collectively, these results show that MKP1 mitigates Aβ-induced apoptosis, oxidative stress and neuroinflammation by inhibiting the JNK signaling pathway, thereby playing a neuroprotective role.
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Affiliation(s)
- Yue Gu
- Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Lian-Jun Ma
- Endoscopy Center, the China-Japan Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xiao-Xue Bai
- Cadre's Wards, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Jing Jie
- Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xiu-Fang Zhang
- Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Dong Chen
- Department of Respiratory Medicine, the First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xiao-Ping Li
- Department of Pediatrics, the First Hospital of Jilin University, Changchun, Jilin Province, China
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39
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Nishii K, Brodin E, Renshaw T, Weesner R, Moran E, Soker S, Sparks JL. Shear stress upregulates regeneration-related immediate early genes in liver progenitors in 3D ECM-like microenvironments. J Cell Physiol 2017; 233:4272-4281. [PMID: 29052842 DOI: 10.1002/jcp.26246] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 10/13/2017] [Indexed: 12/16/2022]
Abstract
The role of fluid stresses in activating the hepatic stem/progenitor cell regenerative response is not well understood. This study hypothesized that immediate early genes (IEGs) with known links to liver regeneration will be upregulated in liver progenitor cells (LPCs) exposed to in vitro shear stresses on the order of those produced from elevated interstitial flow after partial hepatectomy. The objectives were: (1) to develop a shear flow chamber for application of fluid stress to LPCs in 3D culture; and (2) to determine the effects of fluid stress on IEG expression in LPCs. Two hours of shear stress exposure at ∼4 dyn/cm2 was applied to LPCs embedded individually or as 3D spheroids within a hyaluronic acid/collagen I hydrogel. Results were compared against static controls. Quantitative reverse transcriptase polymerase chain reaction was used to evaluate the effect of experimental treatments on gene expression. Twenty-nine genes were analyzed, including IEGs and other genes linked to liver regeneration. Four IEGs (CFOS, IP10, MKP1, ALB) and three other regeneration-related genes (WNT, VEGF, EpCAM) were significantly upregulated in LPCs in response to fluid mechanical stress. LPCs maintained an early to intermediate stage of differentiation in spheroid culture in the absence of the hydrogel, and addition of the gel initiated cholangiocyte differentiation programs which were abrogated by the onset of flow. Collectively the flow-upregulated genes fit the pattern of an LPC-mediated proliferative/regenerative response. These results suggest that fluid stresses are potentially important regulators of the LPC-mediated regeneration response in liver.
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Affiliation(s)
- Kenichiro Nishii
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio
| | - Erik Brodin
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio
| | - Taylor Renshaw
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio
| | - Rachael Weesner
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio
| | - Emma Moran
- Wake Forest Institute for Regenerative Medicine, Winston Salem, North Carolina
| | - Shay Soker
- Wake Forest Institute for Regenerative Medicine, Winston Salem, North Carolina
| | - Jessica L Sparks
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio
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40
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Villalobo A, Ishida H, Vogel HJ, Berchtold MW. Calmodulin as a protein linker and a regulator of adaptor/scaffold proteins. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1865:507-521. [PMID: 29247668 DOI: 10.1016/j.bbamcr.2017.12.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 01/29/2023]
Abstract
Calmodulin (CaM) is a universal regulator for a huge number of proteins in all eukaryotic cells. Best known is its function as a calcium-dependent modulator of the activity of enzymes, such as protein kinases and phosphatases, as well as other signaling proteins including membrane receptors, channels and structural proteins. However, less well known is the fact that CaM can also function as a Ca2+-dependent adaptor protein, either by bridging between different domains of the same protein or by linking two identical or different target proteins together. These activities are possible due to the fact that CaM contains two independently-folded Ca2+ binding lobes that are able to interact differentially and to some degree separately with targets proteins. In addition, CaM can interact with and regulates several proteins that function exclusively as adaptors. This review provides an overview over our present knowledge concerning the structural and functional aspects of the role of CaM as an adaptor protein and as a regulator of known adaptor/scaffold proteins.
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Affiliation(s)
- Antonio Villalobo
- Department of Cancer Biology, Instituto de Investigaciones Biomédicas, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Arturo Duperier 4, E-28029 Madrid, Spain.
| | - Hiroaki Ishida
- Department of Biological Sciences, University of Calgary, 2500 University Dr. N.W., Calgary, Alberta T2N 1N4, Canada
| | - Hans J Vogel
- Department of Biological Sciences, University of Calgary, 2500 University Dr. N.W., Calgary, Alberta T2N 1N4, Canada.
| | - Martin W Berchtold
- Department of Biology, University of Copenhagen, 13 Universitetsparken, DK-2100 Copenhagen Ø, Denmark.
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41
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Ma’ayeh SY, Liu J, Peirasmaki D, Hörnaeus K, Bergström Lind S, Grabherr M, Bergquist J, Svärd SG. Characterization of the Giardia intestinalis secretome during interaction with human intestinal epithelial cells: The impact on host cells. PLoS Negl Trop Dis 2017; 11:e0006120. [PMID: 29228011 PMCID: PMC5739509 DOI: 10.1371/journal.pntd.0006120] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 12/21/2017] [Accepted: 11/17/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Giardia intestinalis is a non-invasive protozoan parasite that causes giardiasis in humans, the most common form of parasite-induced diarrhea. Disease mechanisms are not completely defined and very few virulence factors are known. METHODOLOGY To identify putative virulence factors and elucidate mechanistic pathways leading to disease, we have used proteomics to identify the major excretory-secretory products (ESPs) when Giardia trophozoites of WB and GS isolates (assemblages A and B, respectively) interact with intestinal epithelial cells (IECs) in vitro. FINDINGS The main parts of the IEC and parasite secretomes are constitutively released proteins, the majority of which are associated with metabolism but several proteins are released in response to their interaction (87 and 41 WB and GS proteins, respectively, 76 and 45 human proteins in response to the respective isolates). In parasitized IECs, the secretome profile indicated effects on the cell actin cytoskeleton and the induction of immune responses whereas that of Giardia showed anti-oxidation, proteolysis (protease-associated) and induction of encystation responses. The Giardia secretome also contained immunodominant and glycosylated proteins as well as new candidate virulence factors and assemblage-specific differences were identified. A minor part of Giardia ESPs had signal peptides (29% for both isolates) and extracellular vesicles were detected in the ESPs fractions, suggesting alternative secretory pathways. Microscopic analyses showed ESPs binding to IECs and partial internalization. Parasite ESPs reduced ERK1/2 and P38 phosphorylation and NF-κB nuclear translocation. Giardia ESPs altered gene expression in IECs, with a transcriptional profile indicating recruitment of immune cells via chemokines, disturbances in glucose homeostasis, cholesterol and lipid metabolism, cell cycle and induction of apoptosis. CONCLUSIONS This is the first study identifying Giardia ESPs and evaluating their effects on IECs. It highlights the importance of host and parasite ESPs during interactions and reveals the intricate cellular responses that can explain disease mechanisms and attenuated inflammatory responses during giardiasis.
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Affiliation(s)
- Showgy Y. Ma’ayeh
- Department of Cell and Molecular Biology, Uppsala University, BMC, Uppsala, Sweden
| | - Jingyi Liu
- Department of Cell and Molecular Biology, Uppsala University, BMC, Uppsala, Sweden
| | - Dimitra Peirasmaki
- Department of Cell and Molecular Biology, Uppsala University, BMC, Uppsala, Sweden
| | - Katarina Hörnaeus
- Department of Chemistry-BMC, Analytical Chemistry, Uppsala University, Uppsala, Sweden
| | - Sara Bergström Lind
- Department of Chemistry-BMC, Analytical Chemistry, Uppsala University, Uppsala, Sweden
| | - Manfred Grabherr
- Department of Medical Biochemsitry and Microbiology, BMC, Uppsala, Sweden
| | - Jonas Bergquist
- Department of Chemistry-BMC, Analytical Chemistry, Uppsala University, Uppsala, Sweden
| | - Staffan G. Svärd
- Department of Cell and Molecular Biology, Uppsala University, BMC, Uppsala, Sweden
- * E-mail:
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42
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Sundaraneedi MK, Ammit AJ, Tedla BA, Pearson MS, Loukas A, Keene FR, Collins JG. Tetranuclear Polypyridylruthenium(II) Complexes as Inhibitors and Down-Regulators of Phosphatase Enzymes. ChemistrySelect 2017. [DOI: 10.1002/slct.201702118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Madhu K. Sundaraneedi
- School of Physical; Environmental & Mathematical Sciences; University of New South Wales; Australian Defence Force Academy; Canberra, ACT 2600 Australia
| | - Alaina J. Ammit
- Woolcock Emphysema Centre; Woolcock Institute of Medical Research; University of Sydney; Sydney, NSW 2006 Australia
- School of Life Sciences; University of Technology Sydney; Sydney, NSW 2007 Australia
| | - Bemnet A. Tedla
- Centre for Biodiscovery & Molecular Development of Therapeutics/Australian Institute for Tropical Health & Medicine; James Cook University; Cairns, QLD 4878 Australia
| | - Mark S. Pearson
- Centre for Biodiscovery & Molecular Development of Therapeutics/Australian Institute for Tropical Health & Medicine; James Cook University; Cairns, QLD 4878 Australia
| | - Alex Loukas
- Centre for Biodiscovery & Molecular Development of Therapeutics/Australian Institute for Tropical Health & Medicine; James Cook University; Cairns, QLD 4878 Australia
| | - F. Richard Keene
- Centre for Biodiscovery & Molecular Development of Therapeutics/Australian Institute for Tropical Health & Medicine; James Cook University; Cairns, QLD 4878 Australia
- School of Physical Sciences; University of Adelaide; Adelaide, SA 5005 Australia
| | - J. Grant Collins
- School of Physical; Environmental & Mathematical Sciences; University of New South Wales; Australian Defence Force Academy; Canberra, ACT 2600 Australia
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43
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Wei CH, Min HG, Kim M, Kim GH, Chun HJ, Ryu SE. Two intermediate states of the conformational switch in dual specificity phosphatase 13a. Pharmacol Res 2017; 128:211-219. [PMID: 29106959 DOI: 10.1016/j.phrs.2017.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 10/18/2022]
Abstract
Dual specificity phosphatases (DUSPs) include MAP kinase phosphatases and atypical dual specificity phosphatases and mediate cell growth and differentiation, brain function, and immune responses. They serve as targets for drug development against cancers, diabetes and depression. Several DUSPs have non-canonical conformation of the central β-sheet and active site loops, suggesting that they may have conformational switch that is related to the regulation of enzyme activity. Here, we determined the crystal structure of DUSP13a, and identified two different structures that represent intermediates of the postulated conformational switch. Amino acid sequence of DUSP13a is not significantly homologous to DUSPs with conformational switch, indicating that the conformational switch is not sequence-dependent, but rather determined by ligand interaction. The sequence-independency suggests that other DUSPs with canonical conformation may have the conformational switch during specific cellular regulation. The conformational switch leads to significant changes in the protein surface, including a hydrophobic surface and pockets, which can be exploited for development of allosteric modulators of drug target DUSPs.
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Affiliation(s)
- Chun Hwa Wei
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Hee Gyeong Min
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Myeongbin Kim
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Gwan Hee Kim
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Ha-Jung Chun
- Department of Radiation onclogy, College of Medicine, Hanyang University, Seoul, Korea
| | - Seong Eon Ryu
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea.
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44
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Jin Q, Li R, Hu N, Xin T, Zhu P, Hu S, Ma S, Zhu H, Ren J, Zhou H. DUSP1 alleviates cardiac ischemia/reperfusion injury by suppressing the Mff-required mitochondrial fission and Bnip3-related mitophagy via the JNK pathways. Redox Biol 2017; 14:576-587. [PMID: 29149759 PMCID: PMC5691221 DOI: 10.1016/j.redox.2017.11.004] [Citation(s) in RCA: 334] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/31/2017] [Accepted: 11/04/2017] [Indexed: 02/07/2023] Open
Abstract
Mitochondrial fission and selective mitochondrial autophagy (mitophagy) form an essential axis of mitochondrial quality control that plays a critical role in the development of cardiac ischemia-reperfusion (IR) injury. However, the precise upstream molecular mechanism of fission/mitophagy remains unclear. Dual-specificity protein phosphatase1 (DUSP1) regulates cardiac metabolism, but its physiological contribution in the reperfused heart, particularly its influence on mitochondrial homeostasis, is unknown. Here, we demonstrated that cardiac DUSP1 was downregulated following acute cardiac IR injury. In vivo, compared to wild-type mice, DUSP1 transgenic mice (DUSP1TG mice) demonstrated a smaller infarcted area and the improved myocardial function. In vitro, the IR-induced DUSP1 deficiency promoted the activation of JNK which upregulated the expression of the mitochondrial fission factor (Mff). A higher expression level of Mff was associated with elevated mitochondrial fission and mitochondrial apoptosis. Additionally, the loss of DUSP1 also amplified the Bnip3 phosphorylated activation via JNK, leading to the activation of mitophagy. Increased mitophagy overtly consumed mitochondrial mass resulting into the mitochondrial metabolism disorder. However, the reintroduction of DUSP1 blunted Mff/Bnip3 activation and therefore alleviated the fatal mitochondrial fission/mitophagy by inactivating the JNK pathway, providing a survival advantage to myocardial tissue following IR stress. The results of our study suggest that DUSP1 and its downstream JNK pathway are therapeutic targets for conferring protection against IR injury by repressing Mff-mediated mitochondrial fission and Bnip3-required mitophagy.
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Affiliation(s)
- Qinhua Jin
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China
| | - Ruibing Li
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China; Department of Human Genetics, Emory University, Atlanta, GA, 30322, USA
| | - Nan Hu
- Center for Cardiovascular Research and Alternative Medicine, Wyoming University, Laramie, WY 82071, USA
| | - Ting Xin
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China; Department of Cardiology, Tianjin First Central Hospital, Tianjin 300192, China
| | - Pingjun Zhu
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China
| | - Shunying Hu
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China
| | - Sai Ma
- Center for Cardiovascular Research and Alternative Medicine, Wyoming University, Laramie, WY 82071, USA
| | - Hong Zhu
- Center for Cardiovascular Research and Alternative Medicine, Wyoming University, Laramie, WY 82071, USA
| | - Jun Ren
- Center for Cardiovascular Research and Alternative Medicine, Wyoming University, Laramie, WY 82071, USA
| | - Hao Zhou
- Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China; Center for Cardiovascular Research and Alternative Medicine, Wyoming University, Laramie, WY 82071, USA.
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45
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Gumpena R, Lountos GT, Raran-Kurussi S, Tropea JE, Cherry S, Waugh DS. Crystal structure of the human dual specificity phosphatase 1 catalytic domain. Protein Sci 2017; 27:561-567. [PMID: 29052270 DOI: 10.1002/pro.3328] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 01/29/2023]
Abstract
The dual specificity phosphatase DUSP1 was the first mitogen activated protein kinase phosphatase (MKP) to be identified. It dephosphorylates conserved tyrosine and threonine residues in the activation loops of mitogen activated protein kinases ERK2, JNK1 and p38-alpha. Here, we report the crystal structure of the human DUSP1 catalytic domain at 2.49 Å resolution. Uniquely, the protein was crystallized as an MBP fusion protein in complex with a monobody that binds to MBP. Sulfate ions occupy the phosphotyrosine and putative phosphothreonine binding sites in the DUSP1 catalytic domain.
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Affiliation(s)
- Rajesh Gumpena
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702
| | - George T Lountos
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702.,Frederick National Laboratory for Cancer Research, Basic Science Program, Leidos Biomedical Research, Inc, Frederick, 21702, MD
| | - Sreejith Raran-Kurussi
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702.,TIFR Centre for Interdisciplinary Sciences, Hyderabad, 500075, India
| | - Joseph E Tropea
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702
| | - Scott Cherry
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702
| | - David S Waugh
- Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702
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46
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Peng HZ, Yun Z, Wang W, Ma BA. Dual specificity phosphatase 1 has a protective role in osteoarthritis fibroblast‑like synoviocytes via inhibition of the MAPK signaling pathway. Mol Med Rep 2017; 16:8441-8447. [PMID: 28983624 DOI: 10.3892/mmr.2017.7617] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 08/10/2017] [Indexed: 11/06/2022] Open
Abstract
Increasing evidence indicates the important role of inflammation in the pathogenesis and progression of osteoarthritis (OA). Dual specificity phosphatase 1 (DUSP1), a negative regulator of the mitogen‑activated protein kinase (MAPK) signaling pathway, has anti‑inflammatory properties. In the present study, the expression of DUSP1 was investigated in human OA fibroblast‑like synoviocytes (FLSs), human normal FLSs and OA FLSs pretreated with dexamethasone at the mRNA and protein levels. Then, the activation of MAPK pathway proteins and the expression of matrix metalloproteinase‑13 (MMP‑13) and cyclooxygenase‑2 (COX‑2) were measured by western blot analysis in the three groups of cells. Dexamethasone induced the expression of DUSP1 and inhibited the activation of the MAPK pathway and reduced the expression of MMP‑13 and COX‑2 in OA FLSs. However, the role of DUSP1 remained unclear. To clarify this, the effects of overexpression of DUSP1 in OA FLSs were determined using a DUSP1‑overexpressing lentivirus. The results demonstrated that overexpression of DUSP1 in OA FLSs inhibited the activation of the MAPK pathway and expression of OA‑associated mediators. The findings of the present study indicate that DUSP1 has a protective role in OA FLSs and may be a potential target in the treatment of OA.
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Affiliation(s)
- Hua-Zhi Peng
- Department of Orthopaedics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi 710038, P.R. China
| | - Zhe Yun
- Department of Orthopaedics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi 710038, P.R. China
| | - Wei Wang
- Department of Orthopaedics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi 710038, P.R. China
| | - Bao-An Ma
- Department of Orthopaedics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi 710038, P.R. China
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47
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Tuure L, Hämäläinen M, Whittle BJ, Moilanen E. Microsomal Prostaglandin E Synthase-1 Expression in Inflammatory Conditions Is Downregulated by Dexamethasone: Seminal Role of the Regulatory Phosphatase MKP-1. Front Pharmacol 2017; 8:646. [PMID: 28983247 PMCID: PMC5613146 DOI: 10.3389/fphar.2017.00646] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/31/2017] [Indexed: 11/13/2022] Open
Abstract
Microsomal prostaglandin E synthase-1 (mPGES-1) is an inducible enzyme situated downstream of cyclo-oxygenase-2, promoting the excessive PGE2 production in inflammation. Dexamethasone is known to suppress mPGES-1 but the mechanisms regulating mPGES-1 expression remain poorly known. MKP-1 is a phosphatase controlling the proinflammatory MAP kinase pathways p38 and JNK, thus limiting the inflammatory responses. We have now investigated the role of MKP-1 and MAP kinases p38 and JNK in the regulation of mPGES-1 expression by dexamethasone. Dexamethasone increased MKP-1 and decreased mPGES-1 expression in J774 macrophages and in peritoneal macrophages from wild-type but not from MKP-1 deficient mice. Dexamethasone also reduced p38 and JNK phosphorylation along with enhancement of MKP-1, while inhibition of JNK reduced mPGES-1 expression. These findings were also translated to in vivo conditions as dexamethasone downregulated mPGES-1 expression in paw inflammation in wild-type but not in MKP-1 deficient mice. In conclusion, dexamethasone was found to downregulate mPGES-1 expression through enhanced MKP-1 expression and reduced JNK phosphorylation in inflammatory conditions. The results extend the understanding on the regulation of mPGES-1 expression and highlight the potential of MKP-1 as an anti-inflammatory drug target.
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Affiliation(s)
- Lauri Tuure
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences, University of Tampere, Tampere University HospitalTampere, Finland
| | - Mari Hämäläinen
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences, University of Tampere, Tampere University HospitalTampere, Finland
| | - Brendan J Whittle
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences, University of Tampere, Tampere University HospitalTampere, Finland.,William Harvey Research Institute, Barts and the London School of MedicineLondon, United Kingdom
| | - Eeva Moilanen
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences, University of Tampere, Tampere University HospitalTampere, Finland
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48
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Li S, Hao G, Li J, Peng W, Geng X, Sun J. Comparative analysis of dual specificity protein phosphatase genes 1, 2 and 5 in response to immune challenges in Japanese flounder Paralichthys olivaceus. FISH & SHELLFISH IMMUNOLOGY 2017; 68:368-376. [PMID: 28743632 DOI: 10.1016/j.fsi.2017.07.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/14/2017] [Accepted: 07/21/2017] [Indexed: 06/07/2023]
Abstract
Dual-specificity MAP kinase (MAPK) phosphatases (DUSPs) are well-established negative modulators in regulating MAPK signaling in mammalian cells and tissues. Our previous studies have shown the involvement of DUSP6 in regulating innate immunity in Japanese flounder Paralichthys olivaceus. In order to gain a better understanding of the role of DUSPs in fish innate immunity, in the present study we identified and characterized three additional DUSP genes including DUSP1, 2 and 5 in P. olivaceus. The three Japanese flounder DUSP proteins share common domain structures composed of a conserved N-terminal Rhodanase/CDC25 domain and a C-terminal catalytic phosphatase domain, while they show only less than 26% sequence identities, indicating that they may have different substrate selectivity. In addition, mRNA transcripts of all the three DUSP genes are detected in all examined Japanese flounder tissues; however, DUSP1 is dominantly expressed in spleen while DUSP2 and 5 are primarily expressed in skin. Furthermore, all the three DUSP genes are constitutively expressed in the Japanese flounder head kidney macrophages (HKMs) and peripheral blood leucocytes (PBLs) with unequal distribution patterns. Moreover, all the three DUSPs gene expression was induced differently in response to the LPS and double-stranded RNA mimic poly(I:C) stimulations both in the Japanese flounder HKMs and PBLs, suggesting an association of DUSPs with TLR signaling in fish. Taken together, the co-expression of various DUSPs members together with their different responses to the immune challenges indicate that the DUSP members may operate coordinately in regulating the MAPK-dependent immune responses in the Japanese flounder.
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Affiliation(s)
- Shuo Li
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China.
| | - Gaixiang Hao
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Jiafang Li
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Weijiao Peng
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Xuyun Geng
- Tianjin Center for Control and Prevention of Aquatic Animal Infectious Disease, 442 South Jiefang Road, Hexi District, Tianjin 300221, China
| | - Jinsheng Sun
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China.
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49
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Yang L, Li Y, Wang X, Liu Y, Yang L. MicroRNA‑320a inhibition decreases insulin‑induced KGN cell proliferation and apoptosis by targeting PCGF1. Mol Med Rep 2017; 16:5706-5712. [PMID: 28849208 DOI: 10.3892/mmr.2017.7270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 05/22/2017] [Indexed: 11/05/2022] Open
Abstract
MicroRNAs (miRNAs) are widely involved in regulation of cellular processes of polycystic ovary syndrome (PCOS). However, the function of miR‑320a in PCOS remains unclear. The present study aimed to explore the effect of miR‑320a on PCOS cell proliferation and apoptosis following treatment with insulin, and to clarify the underlying mechanism. PCOS tissues and corresponding normal tissues were collected from 16 female patients with PCOS. KGN cells were pre‑treated with insulin, and KGN cells were transfected with ASO‑miR‑320a, miR‑320a mimics and polycomb group ring finger 1 (PCGF1) overexpression plasmids. Expressions of miR‑320a and PCGF1 were detected using the reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR). Dual‑Luciferase reporter assays were performed to investigate the target gene of miR‑320a. MTS, colony formation and flow cytometry assays were performed to determine cell viability, colony formation, and apoptosis, respectively. Furthermore, mRNA and protein expression levels of B‑cell lymphoma 2 apoptosis regulator (Bcl‑2) and Bcl‑2 associated protein X apoptosis regulator (Bax) were examined using RT‑qPCR and western blotting. The results demonstrated that miR‑320a expression was significantly increased in PCOS tissues compared with normal tissues. Moreover, miR‑320a was upregulated in insulin‑induced cells in a dose‑dependent manner. Inhibition of miR‑320a suppressed insulin‑induced cell viability and colony formation, and promoted apoptosis. Luciferase reporter assays demonstrated that PCGF1 was a target of miR‑320a. Additionally, PCGF1 overexpression inhibited cell viability and colony formation and promoted apoptosis. Additionally, the mRNA and protein levels of Bcl‑2 were inhibited by miR‑320a suppression and PCGF1 overexpression, while Bax expression was promoted by them in insulin‑induced cells. The results of the present study demonstrated that miR‑320a inhibition decreased insulin‑induced KGN cell proliferation and apoptosis by targeting PCGF1. These data indicated that miR‑320a may serve as a potential diagnostic biomarker for PCOS.
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Affiliation(s)
- Lei Yang
- Department of Obstetrics and Gynecology Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yan Li
- Department of Obstetrics and Gynecology Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Xiaojing Wang
- Department of Obstetrics and Gynecology Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Yuling Liu
- Department of Obstetrics and Gynecology Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Lingzhu Yang
- Department of Obstetrics and Gynecology Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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50
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Characterization and reversal of Doxorubicin-mediated biphasic activation of ERK and persistent excitability in sensory neurons of Aplysia californica. Sci Rep 2017; 7:4533. [PMID: 28674403 PMCID: PMC5495788 DOI: 10.1038/s41598-017-04634-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 05/18/2017] [Indexed: 12/17/2022] Open
Abstract
Doxorubicin (DOX), a common chemotherapeutic agent, impairs synaptic plasticity. DOX also causes a persistent increase in basal neuronal excitability, which occludes serotonin-induced enhanced excitability. Therefore, we sought to characterize and reverse DOX-induced physiological changes and modulation of molecules implicated in memory induction using sensory neurons from the marine mollusk Aplysia californica. DOX produced two mechanistically distinct phases of extracellular signal-regulated kinase (ERK) activation, an early and a late phase. Inhibition of MEK (mitogen-activated protein kinase (MAPK)/ERK kinase) after DOX treatment reversed the late ERK activation. MEK inhibition during treatment enhanced the late ERK activation possibly through prolonged downregulation of MAPK phosphatase-1 (MKP-1). Unexpectedly, the late ERK activation negatively correlated with excitability. MEK inhibition during DOX treatment simultaneously enhanced the late activation of ERK and blocked the increase in basal excitability. In summary, we report DOX-mediated biphasic activation of ERK and the reversal of the associated changes in neurons, a potential strategy for reversing the deleterious effects of DOX treatment.
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