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Kong G, Li D, Liu X, Feng J, Ning F, Huang X, Qi B, Qu J, Wang X. PLD2 deficiency alleviates endothelial glycocalyx degradation in LPS-induced ARDS/ALI. Biochem Biophys Res Commun 2024; 716:150019. [PMID: 38703555 DOI: 10.1016/j.bbrc.2024.150019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 04/20/2024] [Accepted: 04/25/2024] [Indexed: 05/06/2024]
Abstract
- Acute respiratory distress syndrome (ARDS)/acute lung injury (ALI) is a life-threatening condition marked by severe lung inflammation and increased lung endothelial barrier permeability. Endothelial glycocalyx deterioration is the primary factor of vascular permeability changes in ARDS/ALI. Although previous studies have shown that phospholipase D2 (PLD2) is closely related to the onset and progression of ARDS/ALI, its role and mechanism in the damage of endothelial cell glycocalyx remains unclear. We used LPS-induced ARDS/ALI mice (in vivo) and LPS-stimulated injury models of EA.hy926 endothelial cells (in vitro). We employed C57BL/6 mice, including wild-type and PLD2 knockout (PLD2-/-) mice, to establish the ARDS/ALI model. We applied immunofluorescence and ELISA to examine changes in syndecan-1 (SDC-1), matrix metalloproteinase-9 (MMP9), inflammatory cytokines (TNF-α, IL-6, and IL-1β) levels and the effect of external factors, such as phosphatidic acid (PA), 1-butanol (a PLD inhibitor), on SDC-1 and MMP9 expression levels. We found that PLD2 deficiency inhibits SDC-1 degradation and MMP9 expression in LPS-induced ARDS/ALI. Externally added PA decreases SDC-1 levels and increases MMP9 in endothelial cells, hence underlining PA's role in SDC-1 degradation. Additionally, PLD2 deficiency decreases the production of inflammatory cytokines (TNF-α, IL-6, and IL-1β) in LPS-induced ARDS/ALI. In summary, these findings suggest that PLD2 deficiency plays a role in inhibiting the inflammatory process and protecting against endothelial glycocalyx injury in LPS-induced ARDS/ALI.
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Affiliation(s)
- Guiqing Kong
- Department of Intensive Care Unit, Binzhou Medical University Hospital, Binzhou, 256603, Shandong Province, China
| | - Dongxiao Li
- Department of Intensive Care Unit, Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, 264000, Shandong Province, China
| | - Xiangyong Liu
- Department of Cell Biology, Binzhou Medical University, Yantai, 264003, Shandong Province, China.
| | - Jiali Feng
- Department of Pulmonary and Critical Care Medicine, Yantaishan Hospital, Yantai, 264000, Shandong Province, China
| | - Fangyu Ning
- Department of Intensive Care Unit, Binzhou Medical University Hospital, Binzhou, 256603, Shandong Province, China
| | - Xiao Huang
- Department of Intensive Care Unit, Binzhou Medical University Hospital, Binzhou, 256603, Shandong Province, China
| | - Boyang Qi
- Department of Cardiovascular Surgery Intensive Care Unit, Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, 264000, Shandong Province, China
| | - Jianyu Qu
- Department of Critical Care Medicine, Yantaishan Hospital, Yantai, 264000, Shandong Province, China
| | - Xiaozhi Wang
- Department of Intensive Care Unit, Binzhou Medical University Hospital, Binzhou, 256603, Shandong Province, China.
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2
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Yang B, Li X. Unveiling the Mechanisms of Bone Marrow Toxicity Induced by Lead Acetate Exposure. Biol Trace Elem Res 2024; 202:1041-1066. [PMID: 37378799 DOI: 10.1007/s12011-023-03733-w] [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: 01/25/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023]
Abstract
Lead (Pb), a widespread heavy metal, causes severe toxicity in human and animal organs (e.g., bone marrow), whereas the mechanisms of the bone marrow toxicity induced by Pb exposure are unclear. Hence, this study was designed to reveal the hub genes involved in Pb-induced bone marrow toxicity. GSE59894 dataset obtained from Gene Expression Omnibus (GEO) was composed of lead acetate (PbAc2)-treated and control bone marrow samples. Totally 120 and 85 differentially expressed genes (DEGs) were identified on the 1st day, while 153 and 157 DEGs on the 3rd day in the bone marrow treated with 200 and 600 mg/kg of PbAc2, respectively. Notably, a total of 28 and 32 overlapping DEGs were identified in the bone marrow on the 1st and 3rd day treated with PbAc2, respectively. Biological process analysis suggested that the common DEGs were primarily participated in cell differentiation, the response to drug, xenobiotic stimulus, and organic cyclic compound. Pathway analysis demonstrated that the overlapping DEGs were primarily linked to PI3K-Akt, TGF-β, MAPK, and osteoclast differentiation signaling pathways. Moreover, the hub genes, including PLD2, DAPK1, ALB, TNF, FOS, CDKN1A, and TGFB3, might contribute to PbAc2-induced bone marrow toxicity. Overall, our study offers an important insight into the molecular mechanisms of Pb-induced bone marrow toxicity.
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Affiliation(s)
- Bing Yang
- College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, China
| | - Xiaofeng Li
- College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, China.
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3
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Su Z, Slivka P, Paulsboe S, Chu K, Wetter JB, Namovic M, Perron D, Kannan A, Wan Q, Manning C, Todorovic V, Smith KM, Lipovsky A, Wang Y, Frank K, McGaraughty S, Loud J, Scott VE, Honore P, Goedken ER. Importance of PLD2 in an IL-23 driven psoriasiform dermatitis model and potential link to human psoriasis. J Dermatol 2023; 50:1321-1329. [PMID: 37455419 DOI: 10.1111/1346-8138.16899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 06/20/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
Phospholipase D2 (PLD2), a major isoform of the PLD family, has been reported to regulate inflammatory responses. Thus far, the relevance of PLD2 in psoriasis, an inflammatory skin disease, has not been explored. In the current study, we examined PLD2 expression in the skin of psoriasis patients and the role of PLD2 in an interleukin (IL)-23-induced mouse model of psoriasiform dermatitis. Both in situ hybridization and bulk RNA sequencing showed PLD2 gene expression is significantly higher in lesional relative to non-lesional skin of psoriasis patients or the skin of healthy subjects. PLD2 expression is also enriched in residual lesions from patients on biologic therapies. Murine in vivo studies showed that PLD2 deficiency significantly reduced psoriasiform inflammation in IL-23-injected ears, as reflected by decreases in ear thickness, expression of defensin beta 4A and the S100 calcium binding protein A7A, macrophage infiltrate, and expression of CXCL10 and IL-6. However, the expression of type 17 cytokines, IL-17A and IL-17F, were not reduced. Dual knockout of PLD1 and PLD2 offered little additional protection compared to PLD2 knockout alone in the IL-23 model. In addition, pharmacological inhibition with a pan-PLD1/PLD2 inhibitor also suppressed IL-23-induced psoriasiform dermatitis. Bone-marrow-derived macrophages from wild type (WT) and PLD2 knockout (KO) mice exhibited little difference in viability and sensitivity to lipopolysaccharide and/or interferon gamma, or resiquimod (R848). PLD2 deficiency did not alter the differentiation and function of Th17 cells in an ex vivo study with splenocytes isolated from WT and PLD2 KO mice. Overall, these data suggest that PLD2 may play a role in the pathophysiology of psoriasis. Reducing macrophage infiltrate and cytokine/chemokine production might contribute to an anti-inflammatory effect observed in PLD2 knockout mice. Further studies are required to better understand the mechanisms by which PLD2 contributes to skin lesions in psoriasis patients and psoriasiform dermatitis models.
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Affiliation(s)
- Zhi Su
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Peter Slivka
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
| | | | - Katherine Chu
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Joseph B Wetter
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Marian Namovic
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Denise Perron
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
| | - Arun Kannan
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Qi Wan
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
| | - Charlene Manning
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
| | - Viktor Todorovic
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Kathleen M Smith
- Cambridge Research Center, AbbVie Inc., Cambridge, Massachusetts, USA
| | - Alex Lipovsky
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
| | - Yibing Wang
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Kristine Frank
- Centralized Medicinal Chemistry, AbbVie Inc., North Chicago, Illinois, USA
| | | | - Jacqueline Loud
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
| | - Victoria E Scott
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Prisca Honore
- Dermatology Discovery, AbbVie Inc., North Chicago, Illinois, USA
| | - Eric R Goedken
- AbbVie Bioresearch Center, AbbVie Inc., Worcester, Massachusetts, USA
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4
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Wu H, Chen H, Zhou R. Phospholipase D2 targeted by miR-5132-5p alleviates cerulein-induced acute pancreatitis via the Nrf2/NFκB pathway. Immun Inflamm Dis 2023; 11:e831. [PMID: 37249288 DOI: 10.1002/iid3.831] [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: 08/16/2022] [Revised: 02/02/2023] [Accepted: 03/22/2023] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Acute pancreatitis (AP) is an inflammatory process unexpectedly occurring in the pancreas, imposing a substantial burden on healthcare systems. Herein, we aimed to clarify the mechanism of action of phospholipase D2 (PLD2) in cerulein-treated AR42J cells, affording valuable insights into the treatment of AP. METHODS The levels of PLD2, miR-5132-5p, inflammatory factors (interleukin [IL]-10, IL-6, and tumor necrosis factor-α), caspase-3 activity, and apoptosis-related proteins (Bax and Bcl-2) in cerulein-treated AR42J cells were detected using reverse transcription-quantitative polymerase chain, caspase-3 activity, and Western blot analysis. Protein levels of nuclear Factor erythroid 2-Related Factor 2 (Nrf2) and nuclear factor-k-gene binding (NF-κB) were detected by Western blot analysis. TargetScan predicted upstream microRNAs (miRNAs) of PLD2, and the interaction between miR-5132-5p and PLD2 was verified using a luciferase assay. RESULTS In cerulein-treated AR42J cells, PLD2 levels were downregulated, while miR-5132-5p expression was upregulated. Overexpression of PLD2 attenuated the cerulein-mediated facilitatory effect on inflammation and apoptosis in AR42J cells by regulating the Nrf2/NFκB pathway. Luciferase reporter analysis revealed that miR-5132-5p targeted PLD2, and miR-5132-5p negatively regulated PLD2. Upregulation of miR-5132-5p expression exacerbated inflammation and apoptosis and reversed the protective effect of PLD2 overexpression on AP. CONCLUSION PLD2 targeted by miR-5132-5p can attenuate cerulein-induced AP in AR42J cells via the Nrf2/NFκB pathway, providing therapeutic targets for patients with AP.
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Affiliation(s)
- Hailong Wu
- Department of General Surgery, Wuhan Fourth Hospital, Wuhan, Hubei, China
| | - Hao Chen
- Department of Neurosurgery, Wuhan Fourth Hospital, Wuhan, Hubei, China
| | - Rui Zhou
- Department of General Surgery, Wuhan Fourth Hospital, Wuhan, Hubei, China
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5
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Buchbender M, Fehlhofer J, Proff P, Möst T, Ries J, Hannig M, Neurath MF, Gund M, Atreya R, Kesting M. Expression of inflammatory mediators in biofilm samples and clinical association in inflammatory bowel disease patients-a preliminary study. Clin Oral Investig 2021; 26:1217-1228. [PMID: 34383142 PMCID: PMC8816497 DOI: 10.1007/s00784-021-04093-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/19/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Inflammatory bowel disease (IBD) has multiple impacts on soft and hard tissues in the oral cavity. The aim of this study was to analyze the expression of cytokines in biofilm samples from patients suffering from IBD and compare them to healthy patients. It was hypothesized that different cytokine expression levels and clinical associations might be drawn. MATERIAL AND METHODS A total of 56 biofilm samples from three different patient cohorts (group 0 = healthy, HC n = 30; group 1 = Crohn's disease, CD, n = 19; group 2 = ulcerative colitis, UC, n = 7) were examined for the expression levels of the cytokine interleukins IL-2, -6, and -10; matrix metalloproteinases 7 and 9; and surface antigens CD90/CD11a by quantitative real-time PCR and according to clinical parameters (plaque index, BOP, PD, DMFT, CAL). Relative gene expression was determined using the ∆∆CT method. RESULTS The mean BOP values (p = 0.001) and PD (p = 0.000) were significantly higher in the CD group compared to controls. Expression of IL-10 was significantly higher in the CD (p = 0.004) and UC groups (p = 0.022). Expression of MMP-7 was significantly higher in the CD group (p = 0.032). IBD patients treated with TNF inhibitors (p = 0.007) or other immunosuppressants (p = 0.014) showed significant overexpression of IL-10 compared to controls. CONCLUSION Different expression levels of IL-10 and MMP-7 were detected in plaque samples from IBD patients. As only BOP was significantly increased, we conclude that no clinical impairment of periodontal tissue occurred in IBD patients. CLINICAL RELEVANCE With the worldwide increasing incidence of IBD, it is important to obtain insights into the effects of the disease on the oral cavity. The study was registered (01.09.2020) at the German clinical trial registry (DRKS00022956). CLINICAL TRIAL REGISTRATION The study is registered at the German clinical trial registry (DRKS00022956).
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Affiliation(s)
- Mayte Buchbender
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany.
| | - Jakob Fehlhofer
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
| | - Peter Proff
- Head of the Department of Orthodontics, University of Regensburg, Regensburg, Germany
| | - Tobias Möst
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
| | - Jutta Ries
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
| | - Matthias Hannig
- Head of Department of Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
| | - Markus F Neurath
- Department of Medicine, University of Erlangen-Nuremberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie DZI, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Madline Gund
- Department of Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
| | - Raja Atreya
- Department of Medicine, University of Erlangen-Nuremberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie DZI, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Marco Kesting
- Department of Oral and Maxillofacial Surgery, University of Erlangen- Nuremberg, Glückstrasse 11, 91054, Erlangen, Germany
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Yang Y, Zhang C, Jing D, He H, Li X, Wang Y, Qin Y, Xiao X, Xiong H, Zhou G. IRF5 Acts as a Potential Therapeutic Marker in Inflammatory Bowel Diseases. Inflamm Bowel Dis 2021; 27:407-417. [PMID: 32737976 DOI: 10.1093/ibd/izaa200] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Inflammatory bowel diseases (IBDs), including ulcerative colitis (UC) and Crohn's disease (CD), are chronic inflammatory disorders. As is well known, interferon regulatory factor (IRF) 5 is closely associated with the pathogenesis of various inflammatory diseases. But the exact role of IRF5 in IBD remains unclear. METHODS In this study, we detected IRF5 expression in peripheral blood mononuclear cells (PBMCs) and inflamed mucosa from IBD patients by immunohistochemistry, western blot, and quantitative real-time polymerase chain reaction. Peripheral blood CD4+ T cells were stimulated with inflammatory cytokines and transfected by lentivirus. RESULTS In active IBD patients, the expression of IRF5 in PBMCs and inflamed colonic tissues was obviously increased and significantly associated with disease activity. Ectopic overexpression of IRF5 could promote the differentiation of IBD CD4+ T cells into Th1 and Th17 cells by regulating T-bet and RAR related orphan receptor C, whereas knockdown of IRF5 had the opposite effects. Tumor necrosis factor (TNF)-α upregulated expression of IRF5 in CD4+ T cells, but anti-TNF treatment with infliximab could markedly reduce IRF5 expression in CD4+ T cells and intestinal mucosa of CD patients. CONCLUSION Our study reveals a novel mechanism that IRF5 levels are correlated with disease activity in IBD and might function as a possible marker for the management of IBD via regulating Th1 and Th17 immune responses and cytokine production.
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Affiliation(s)
- Yonghong Yang
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China.,Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China
| | - Cui Zhang
- Department of Gastroenterology, The Shanghai Tenth People's Hospital, Tongji University, Shanghai, P.R. China
| | - Dehuai Jing
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China
| | - Heng He
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China
| | - Xiaoyu Li
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, P.R. China
| | - Yibo Wang
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China
| | - Yufen Qin
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China
| | - Xiao Xiao
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China
| | - Huabao Xiong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong, P.R. China
| | - Guangxi Zhou
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, P.R. China.,Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong, P.R. China
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Auclair N, Sané AT, Delvin E, Spahis S, Levy E. Phospholipase D as a Potential Modulator of Metabolic Syndrome: Impact of Functional Foods. Antioxid Redox Signal 2021; 34:252-278. [PMID: 32586106 DOI: 10.1089/ars.2020.8081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Significance: Cardiometabolic disorders (CMD) are composed of a plethora of metabolic dysfunctions such as dyslipidemia, nonalcoholic fatty liver disease, insulin resistance, and hypertension. The development of these disorders is highly linked to inflammation and oxidative stress (OxS), two metabolic states closely related to physiological and pathological conditions. Given the drastically rising CMD prevalence, the discovery of new therapeutic targets/novel nutritional approaches is of utmost importance. Recent Advances: The tremendous progress in methods/technologies and animal modeling has allowed the clarification of phospholipase D (PLD) critical roles in multiple cellular processes, whether directly or indirectly via phosphatidic acid, the lipid product mediating signaling functions. In view of its multiple features and implications in various diseases, PLD has emerged as a drug target. Critical Issues: Although insulin stimulates PLD activity and, in turn, PLD regulates insulin signaling, the impact of the two important PLD isoforms on the metabolic syndrome components remains vague. Therefore, after outlining PLD1/PLD2 characteristics and functions, their role in inflammation, OxS, and CMD has been analyzed and critically reported in the present exhaustive review. The influence of functional foods and nutrients in the regulation of PLD has also been examined. Future Directions: Available evidence supports the implication of PLD in CMD, but only few studies emphasize its mechanisms of action and specific regulation by nutraceutical compounds. Therefore, additional investigations are first needed to clarify the functional role of nutraceutics and, second, to elucidate whether targeting PLDs with food compounds represents an appropriate therapeutic strategy to treat CMD. Antioxid. Redox Signal. 34, 252-278.
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Affiliation(s)
- Nickolas Auclair
- Research Center, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada.,Department of Pharmacology & Physiology and Université de Montréal, Montreal, Quebec, Canada
| | - Alain T Sané
- Research Center, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada
| | - Edgard Delvin
- Research Center, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada
| | - Schohraya Spahis
- Research Center, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada.,Department of Nutrition, Université de Montréal, Montreal, Quebec, Canada
| | - Emile Levy
- Research Center, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada.,Department of Pharmacology & Physiology and Université de Montréal, Montreal, Quebec, Canada.,Department of Nutrition, Université de Montréal, Montreal, Quebec, Canada
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8
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Zhu F, He H, Fan L, Ma C, Xu Z, Xue Y, Wang Y, Zhang C, Zhou G. Blockade of CXCR2 suppresses proinflammatory activities of neutrophils in ulcerative colitis. Am J Transl Res 2020; 12:5237-5251. [PMID: 33042416 PMCID: PMC7540107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
Ulcerative colitis (UC) is one chronically remittent and progressive inflammatory disorder. Chemokine receptor CXCR2 is reported to be involved in the pathogenesis of several inflammatory diseases. However, how CXCR2 modulate mucosal inflammation in UC is still obscure. In this study, CXCR2 expression was determined in inflamed mucosa and peripheral blood cells from patients with UC by qRT-PCR. Neutrophils isolated from peripheral blood were pretreated with CXCR2 inhibitor (SB225002), and proinflammatory mediators were examined by qRT-PCR, ELISA and IF. The migratory capacity of neutrophils after SB225002 treatment was examined by using Transwell plate. Furthermore, SB225002 was administrated daily in DSS-induced colitis mice. We found that CXCR2 expression was significantly increased in colonic mucosal tissues and peripheral blood cells from patients with active UC. Besides, CXCR2 was highly expressed in neutrophils, and was positively correlated with disease activity. Inhibition of CXCR2 in neutrophils decreased the production of proinflammatory mediators, such as reactive oxygen species (ROS), MPO, S100a8, S100a9, TNF-α, IL-1β, IL-8 and IL-6, and the migratory capacity of neutrophils was markedly impaired after SB225002 treatment. Moreover, blockade of CXCR2 with SB225002 could markedly ameliorate DSS-induced colitis in mice. In summary, CXCR2 plays a critical role in the pathogenesis of UC through modulating immune responses of neutrophils. Blockade of CXCR2 may serve as a new therapeutic approach for treatment of UC.
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Affiliation(s)
- Fengqin Zhu
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Heng He
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Li Fan
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Cuimei Ma
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Zhen Xu
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Yuan Xue
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Yibo Wang
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
| | - Cuiping Zhang
- Department of Gastroenterology, The Affiliated Hospital of Qingdao UniversityQingdao 266003, Shandong, P. R. China
| | - Guangxi Zhou
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical UniversityJining 272000, Shandong, P. R. China
- Institute of Immunology and Molecular Medicine, Jining Medical UniversityJining 272000, Shandong, P. R. China
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9
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Wang Y, Zhang H, He H, Ai K, Yu W, Xiao X, Qin Y, Zhang L, Xiong H, Zhou G. LRCH1 suppresses migration of CD4 + T cells and refers to disease activity in ulcerative colitis. Int J Med Sci 2020; 17:599-608. [PMID: 32210709 PMCID: PMC7085219 DOI: 10.7150/ijms.39106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 01/13/2020] [Indexed: 01/05/2023] Open
Abstract
Background: Ulcerative colitis (UC) is a chronically remittent and progressive inflammatory disorder. LRCH1 is reported to be involved in the immune-regulation of several diseases. However, the exact roles of LRCH1 in UC are still obscure. Materials and Methods: LRCH1 expression was analyzed in the inflamed mucosa and peripheral blood mononuclear cells (PBMCs) from patients with UC by quantitative RT-PCR and immunohistochemistry. Peripheral blood CD4+ T cells were transfected with lentivirus-expressing LRCH1 (LV-LRCH1) or LV-sh-LRCH1, and cytokine expression was determined by using flow cytometry, quantitative RT-PCR and ELISA. Transfected CD4+ T cells were harvested to examine the capacity of chemotaxis using Transwell plate. Results: LRCH1 expression was highly decreased in colonic mucosa and PBMCs from patients with A-UC, and negatively correlated with disease activity. Up or down regulation of LRCH1 did not affect the differentiation of CD4+ T cells, and the related cytokines expression. Moreover, LRCH1 inhibited migratory capacity of CD4+ T cells toward CXCL12 by PKCα. Conclusion: LRCH1 plays an important role in the pathogenesis of UC, possibly through modulating the migration of CD4+ T cells. Therefore, targeting LRCH1 might serve as a novel therapeutic approach in the management of UC.
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Affiliation(s)
- Yibo Wang
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Hairong Zhang
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Heng He
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Kuankuan Ai
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Wei Yu
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Xiao Xiao
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Yufen Qin
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Lingming Zhang
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Huabao Xiong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, Shandong 272000, P.R. China
| | - Guangxi Zhou
- Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, P.R. China
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10
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Wang F, Zhang J, Zhou G. Deregulated phospholipase D2/mammalian target of rapamycin/hypoxia-inducible factor 1 alpha in peripheral T lymphocytes of oral lichen planus correlated with disease severity. Arch Oral Biol 2019; 98:26-31. [DOI: 10.1016/j.archoralbio.2018.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/23/2018] [Accepted: 11/01/2018] [Indexed: 12/15/2022]
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11
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Gutierrez-Camino Á, Umerez M, Lopez-Lopez E, Santos-Zorrozua B, Martin-Guerrero I, de Andoin NG, Ana S, Navajas A, Astigarraga I, Garcia-Orad A. Involvement of miRNA polymorphism in mucositis development in childhood acute lymphoblastic leukemia treatment. Pharmacogenomics 2018; 19:1403-1412. [DOI: 10.2217/pgs-2018-0113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Aim: Mucositis, linked to methotrexate, daunorubicin or cyclophosphamide, is a frequent childhood acute lymphoblastic leukemia (ALL) therapy side effect. miRNAs regulate the expression of pharmacokinetic/pharmacodynamic pathway genes. SNPs in miRNAs could affect their levels or function, and affect their pharmacokinetic/pharmacodynamic pathway target genes. Our aim was to determine the association between miRNA genetic variants targeting mucositis-related genes and mucositis-developing risk. Patients & methods: We analyzed 160 SNPs in 179 Spanish children with B-cell precursor ALL homogeneously treated with LAL/SHOP protocols. Results: We identified three SNPs in miR-4268, miR-4751 and miR-3117 associated with mucositis, diarrhea and vomiting, respectively. Conclusion: The effect of these SNPs on genes related to drug pharmacokinetics/pharmacodynamics could explain mucositis, diarrhea and vomiting development during ALL therapy.
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Affiliation(s)
- Ángela Gutierrez-Camino
- Department of Genetics, Physic Anthropology & Animal Physiology, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
- BioCruces Health Research Institute, Barakaldo, 48903, Spain
| | - Maitane Umerez
- Department of Genetics, Physic Anthropology & Animal Physiology, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
| | - Elixabet Lopez-Lopez
- Department of Genetics, Physic Anthropology & Animal Physiology, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
- BioCruces Health Research Institute, Barakaldo, 48903, Spain
| | - Borja Santos-Zorrozua
- Department of Genetics, Physic Anthropology & Animal Physiology, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
| | - Idoia Martin-Guerrero
- Department of Genetics, Physic Anthropology & Animal Physiology, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
- BioCruces Health Research Institute, Barakaldo, 48903, Spain
| | - Nagore García de Andoin
- Department of Pediatrics, University Hospital Donostia, San Sebastian, 20014, Spain
- Department of Pediatrics, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
| | - Sastre Ana
- Department of Oncohematology, University Hospital La Paz, Madrid, 28046, Spain
| | - Aurora Navajas
- BioCruces Health Research Institute, Barakaldo, 48903, Spain
- Department of Pediatrics, University Hospital Cruces, Barakaldo, 48903, Spain
| | - Itziar Astigarraga
- BioCruces Health Research Institute, Barakaldo, 48903, Spain
- Department of Pediatrics, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
- Department of Pediatrics, University Hospital Cruces, Barakaldo, 48903, Spain
| | - Africa Garcia-Orad
- Department of Genetics, Physic Anthropology & Animal Physiology, University of the Basque Country, UPV/EHU, Leioa, 48940, Spain
- BioCruces Health Research Institute, Barakaldo, 48903, Spain
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12
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Anti-TNF- α Therapy Suppresses Proinflammatory Activities of Mucosal Neutrophils in Inflammatory Bowel Disease. Mediators Inflamm 2018; 2018:3021863. [PMID: 30595666 PMCID: PMC6282128 DOI: 10.1155/2018/3021863] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/05/2018] [Accepted: 09/13/2018] [Indexed: 12/28/2022] Open
Abstract
Neutrophils have been found to play an important role in the pathogenesis of inflammatory bowel disease (IBD), and anti-TNF-α mAb (i.e., infliximab) therapy is demonstrated to be effective in the induction of clinical remission and mucosal healing in these patients. However, how anti-TNF-α mAb regulates the functions of neutrophils is still unknown. Herein, we found that anti-TNF-α therapy significantly downregulated infiltration of neutrophils in inflamed mucosa of IBD patients. Importantly, anti-TNF-α mAb could inhibit neutrophils to produce proinflammatory mediators, such as ROS, calprotectin, IL-8, IL-6, and TNF-α. These data indicate that TNF-α plays a critical role in the induction of mucosal inflammatory response, and that blockade of TNF-α modulates intestinal homeostasis through balancing immune responses of neutrophils.
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13
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Abdulnour REE, Howrylak JA, Tavares AH, Douda DN, Henkels KM, Miller TE, Fredenburgh LE, Baron RM, Gomez-Cambronero J, Levy BD. Phospholipase D isoforms differentially regulate leukocyte responses to acute lung injury. J Leukoc Biol 2018; 103:919-932. [PMID: 29437245 DOI: 10.1002/jlb.3a0617-252rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 01/03/2018] [Accepted: 01/10/2018] [Indexed: 12/30/2022] Open
Abstract
Phospholipase D (PLD) plays important roles in cellular responses to tissue injury that are critical to acute inflammatory diseases, such as the acute respiratory distress syndrome (ARDS). We investigated the expression of PLD isoforms and related phospholipid phosphatases in patients with ARDS, and their roles in a murine model of self-limited acute lung injury (ALI). Gene expression microarray analysis on whole blood obtained from patients that met clinical criteria for ARDS and clinically matched controls (non-ARDS) demonstrated that PLD1 gene expression was increased in patients with ARDS relative to non-ARDS and correlated with survival. In contrast, PLD2 expression was associated with mortality. In a murine model of self-resolving ALI, lung Pld1 expression increased and Pld2 expression decreased 24 h after intrabronchial acid. Total lung PLD activity was increased 24 h after injury. Pld1-/- mice demonstrated impaired alveolar barrier function and increased tissue injury relative to WT and Pld2-/- , whereas Pld2-/- mice demonstrated increased recruitment of neutrophils and macrophages, and decreased tissue injury. Isoform-specific PLD inhibitors mirrored the results with isoform-specific Pld-KO mice. PLD1 gene expression knockdown in human leukocytes was associated with decreased phagocytosis by neutrophils, whereas reactive oxygen species production and phagocytosis decreased in M2-macrophages. PLD2 gene expression knockdown increased neutrophil and M2-macrophage transmigration, and increased M2-macrophage phagocytosis. These results uncovered selective regulation of PLD isoforms after ALI, and opposing effects of selective isoform knockdown on host responses and tissue injury. These findings support therapeutic strategies targeting specific PLD isoforms for the treatment of ARDS.
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Affiliation(s)
- Raja-Elie E Abdulnour
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Judie A Howrylak
- Division of Pulmonary Allergy and Critical Care Medicine, Penn State Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Alexander H Tavares
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - David N Douda
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Karen M Henkels
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, Ohio, USA
| | - Taylor E Miller
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, Ohio, USA
| | - Laura E Fredenburgh
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Rebecca M Baron
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Julian Gomez-Cambronero
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, Ohio, USA.,Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Bruce D Levy
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.,Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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14
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Intestinal Epithelial Cell-Specific Deletion of PLD2 Alleviates DSS-Induced Colitis by Regulating Occludin. Sci Rep 2017; 7:1573. [PMID: 28484281 PMCID: PMC5431506 DOI: 10.1038/s41598-017-01797-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 04/04/2017] [Indexed: 02/08/2023] Open
Abstract
Ulcerative colitis is a multi-factorial disease involving a dysregulated immune response. Disruptions to the intestinal epithelial barrier and translocation of bacteria, resulting in inflammation, are common in colitis. The mechanisms underlying epithelial barrier dysfunction or regulation of tight junction proteins during disease progression of colitis have not been clearly elucidated. Increase in phospholipase D (PLD) activity is associated with disease severity in colitis animal models. However, the role of PLD2 in the maintenance of intestinal barrier integrity remains elusive. We have generated intestinal-specific Pld2 knockout mice (Pld2 IEC-KO) to investigate the mechanism of intestinal epithelial PLD2 in colitis. We show that the knockout of Pld2 confers protection against dextran sodium sulphate (DSS)-induced colitis in mice. Treatment with DSS induced the expression of PLD2 and downregulated occludin in colon epithelial cells. PLD2 was shown to mediate phosphorylation of occludin and induce its proteasomal degradation in a c-Src kinase-dependent pathway. Additionally, we have shown that treatment with an inhibitor of PLD2 can rescue mice from DSS-induced colitis. To our knowledge, this is the first report showing that PLD2 is pivotal in the regulation of the integrity of epithelial tight junctions and occludin turn over, thereby implicating it in the pathogenesis of colitis.
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