1
|
Yang H, Cao R, Zhou F, Wang B, Xu Q, Li R, Zhang C, Xu H. The role of Interleukin-22 in severe acute pancreatitis. Mol Med 2024; 30:60. [PMID: 38750415 PMCID: PMC11097471 DOI: 10.1186/s10020-024-00826-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 05/02/2024] [Indexed: 05/18/2024] Open
Abstract
Severe acute pancreatitis (SAP) begins with premature activation of enzymes, promoted by the immune system, triggering a potential systemic inflammatory response that leads to organ failure with increased mortality and a bleak prognosis. Interleukin-22 (IL-22) is a cytokine that may have a significant role in SAP. IL-22, a member of the IL-10 cytokine family, has garnered growing interest owing to its potential tissue-protective properties. Recently, emerging research has revealed its specific effects on pancreatic diseases, particularly SAP. This paper provides a review of the latest knowledge on the role of IL-22 and its viability as a therapeutic target in SAP.
Collapse
Affiliation(s)
- Hongli Yang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, 250021, P.R. China
- Medical Science and Technology Innovation Center, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, 250021, P.R. China
| | - Ruofan Cao
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, 250021, P.R. China
- Medical Science and Technology Innovation Center, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, 250021, P.R. China
| | - Feifei Zhou
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, 250021, P.R. China
| | - Ben Wang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, 250021, P.R. China
| | - Qianqian Xu
- Department of Gastroenterology, Cheeloo College of Medicine, Shandong Provincial Hospital, Shandong University, Ji'nan, Shandong, 250021, P.R. China
| | - Rui Li
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, 250021, P.R. China
- Medical Science and Technology Innovation Center, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, 250021, P.R. China
| | - ChunHua Zhang
- Shandong First Medical University, Ji'nan, Shandong, 250117, P.R. China
| | - Hongwei Xu
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, Shandong, 250021, P.R. China.
- Medical Science and Technology Innovation Center, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, 250021, P.R. China.
| |
Collapse
|
2
|
YÜCE M, GÜMÜŞKAPTAN Ç, ÇON AH, YAZICI F. Conjugated Linoleic Acid strengthens the apoptotic effect of low-dose cisplatin in A549 cells by inducing Bcl-2 downregulation. Prostaglandins Other Lipid Mediat 2023; 166:106731. [PMID: 37001725 DOI: 10.1016/j.prostaglandins.2023.106731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023]
Abstract
One of the chemotherapeutic agents widely used in the treatment of non-small cell lung cancer (NSCLC) is cisplatin. However, the resistance of cancer cells to cisplatin and additionally serious side effects from cisplatin limit its use. Conjugated linoleic acid (CLA) has been shown to suppress the development of carcinogenesis in vitro and in vivo studies and has antitumoral activity in many cancers. The study aimed to investigate the potential effect of using cisplatin, the first-line treatment for NSCLC, in combination with CLA to increase its efficacy in low-dose use. MTT cytotoxicity assay was performed to determine the effects of CLA in combination with cisplatin on cell viability of NSCLC cell lines. The apoptotic effect of this combination on NSCLC cell lines and cell cycle distribution was determined by flow cytometry. At the same time, apoptosis and cell cycle-related gene expression levels were determined by Real-Time PCR. Combination treatment of low-dose cisplatin with CLA resulted in a significant decrease in cell viability compared to cisplatin alone, and an increase in the rate of apoptotic cells was observed. While cisplatin caused G1 phase arrest in cancer cells, there was an increase in cell percentages in S and G2 phases after combined application with CLA. In high-dose cisplatin administration, it was observed that the efficiency of the decrease in anti-apoptotic BCL2 expression related to resistance to chemotherapeutic agents was less than that of low-dose cisplatin administration. Combined administration of high-dose cisplatin with CLA significantly recovered BCL2 downregulation.
Collapse
|
3
|
Magouliotis DE, Karamolegkou AP, Zotos PA, Tatsios E, Samara AA, Alexopoulou D, Koutsougianni F, Sakellaridis N, Zacharoulis D, Dimas K. Bioinformatic Analysis of the BCL-xL/BCL2L1 Interactome in Patients with Pancreatic Cancer. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58111663. [PMID: 36422202 PMCID: PMC9698957 DOI: 10.3390/medicina58111663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
Objectives: The aim of the present study was to analyze the differential gene expression of BCL-xL/BCL2L and the associated genetic, molecular, and biologic functions in pancreatic ductal adenocarcinoma (PDAC) by employing advanced bioinformatics to investigate potential candidate genes implicated in the pathogenesis of PDAC. Materials and Methods: Bioinformatic techniques were employed to build the gene network of BCL-xL, to assess the translational profile of BCL-xL in PDAC, assess its role in predicting PDAC, and investigate the associated biologic functions and the regulating miRNA families. Results: Microarray data extracted from one dataset was incorporated, including 130 samples (PDAC: 69; Control: 61). In addition, the expression level of BCL-xL was higher in PDAC compared to control samples (p < 0.001). Furthermore, BCL-xL demonstrated excellent discrimination (AUC: 0.83 [95% Confidence Intervals: 0.76, 0.90]; p < 0.001) and calibration (R squared: 0.31) traits for PDAC. A gene set enrichment analysis (GSEA) demonstrated the molecular functions and miRNA families (hsa-miR-4804-5p, hsa-miR-4776-5p, hsa-miR-6770-3p, hsa-miR-3619-3p, and hsa-miR-7152-3p) related to BCL-xL. Conclusions: The current findings unveil the biological implications of BCL-xL in PDAC and the related molecular functions and miRNA families.
Collapse
Affiliation(s)
| | | | - Prokopis-Andreas Zotos
- Department of Cardiothoracic Surgery, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Evangelos Tatsios
- Department of Surgery, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Athina A. Samara
- Department of Surgery, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Dimitra Alexopoulou
- Department of Pharmacology, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Fani Koutsougianni
- Department of Pharmacology, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Nikos Sakellaridis
- Department of Pharmacology, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | | | - Konstantinos Dimas
- Department of Pharmacology, University of Thessaly, Biopolis, 41500 Larissa, Greece
- Correspondence: ; Tel.: +30-2413502803
| |
Collapse
|
4
|
Yuan J, Chheda C, Tan G, Elmadbouh O, Pandol SJ. Protein kinase D: A therapeutic target in experimental alcoholic pancreatitis. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166486. [PMID: 35835415 PMCID: PMC9481726 DOI: 10.1016/j.bbadis.2022.166486] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/24/2022] [Accepted: 07/06/2022] [Indexed: 12/18/2022]
Abstract
BACKGROUND Alcohol abuse, a main cause of pancreatitis, has been known to augment NF-κB activation and cell necrosis in pancreatitis. However, the underlying mechanisms are unclear. We recently reported that inhibition of protein kinase D (PKD) alleviated NF-κB activation and severity of experimental pancreatitis. Here we investigated whether PKD signaling mediated the modulatory effects of alcohol abuse on pathological responses in alcoholic pancreatitis. METHODS Alcoholic pancreatitis was provoked in two rodent models with pair-feeding control and ethanol-containing Lieber-DeCarli diets for up to 8 weeks followed by up to 7 hourly intraperitoneal injections of cerulein at 1 μg/kg (rats) or 3 μg/kg (mice). Effects of PKD inhibition by PKD inhibitors or genetic deletion of pancreatic PKD isoform (PKD3Δpanc mice) on alcoholic pancreatitis parameters were determined. RESULTS Ethanol administration amplified PKD signaling by promoting expression and activation of pancreatic PKD, resulted in augmented/promoted pancreatitis responses. Pharmacological inhibition of PKD or with PKD3Δpanc mice prevented the augmenting/sensitizing effect of ethanol on NF-κB activation and inflammatory responses, cell necrotic death and the severity of disease in alcoholic pancreatitis. PKD inhibition prevented alcohol-enhanced trypsinogen activation, mRNA expression of multiple inflammatory molecules, the receptor-interacting protein kinase activation, ATP depletion, and downregulation of pro-survival Bcl-2 protein in alcoholic pancreatitis. Furthermore, PKD inhibitor CID755673 or CRT0066101, administrated after the induction of pancreatitis in mouse and rat alcoholic pancreatitis models, significantly mitigated the severity of pancreatitis. CONCLUSION PKD mediates effect of alcohol abuse on pathological process of pancreatitis and constitutes a novel therapeutic target to treat this disease.
Collapse
Affiliation(s)
- Jingzhen Yuan
- Cedars-Sinai Medical Center, Los Angeles, CA, USA; Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA.
| | | | - Grace Tan
- Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA; Loma Linda Medical School, Los Angeles, CA, USA
| | | | - Stephen J Pandol
- Cedars-Sinai Medical Center, Los Angeles, CA, USA; Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA
| |
Collapse
|
5
|
Alcohol Aggravates Acute Pancreatitis by Impairing Autophagic Flux Through Activation of AMPK Signaling Pathway. Dig Dis Sci 2022; 67:524-535. [PMID: 33555515 DOI: 10.1007/s10620-021-06870-1] [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: 08/27/2020] [Accepted: 01/20/2021] [Indexed: 12/09/2022]
Abstract
OBJECTIVE Alcohol consumption is always the main cause of acute pancreatitis (AP). It has been reported that alcohol exerts direct damage to the pancreas. However, the specific role of alcohol during AP needs to be investigated. This study aims to examine the effects of alcohol in cerulein-induced AP and the role of the AMPK pathway. METHODS Human subjects from operations, cerulein-induced AP rat, and cerulein-stimulated AR42J cell line were enrolled in this study. Electron microscopy was employed for observation of cell morphology, immunohistochemistry for identification of cells, ELISA for detection of inflammation factors, Annexin V/PI double staining for evaluation of cell apoptosis, immunofluorescence for assessment of autophagic flux, oil red O staining for examination of lipid droplet accumulation, and Western blot for measurement of expressions of proteins related to autophagy, apoptosis, and AMPK signal pathway. PI3K inhibitor 3-MA and AMPK inhibitor BML-275 were utilized for investigation of the relationship between impaired autophagic flux and the AMPK pathway by inhibiting or stimulating the formation of autophagosome. RESULTS Alcohol consumption caused lipid droplet accumulation in the pancreas, and it also activated AMPK signaling pathway, thus aggravating the autophagic flux during AP. Alcohol up-regulated the expressions of anti-apoptotic proteins during the induction of AP to inhibit cell apoptosis and enhance cell necrosis. Inhibition of autophagosome formation by AMPK inhibitor BML-275 ameliorated the decreased cell viability caused by alcohol and cerulein in vitro. CONCLUSION Alcohol aggravates AP progression by impairing autophagic flux and enhancing cell autophagy through the AMPK signaling pathway.
Collapse
|
6
|
Li G, Chen H, Liu L, Xiao P, Xie Y, Geng X, Zhang T, Zhang Y, Lu T, Tan H, Li L, Sun B. Role of Interleukin-17 in Acute Pancreatitis. Front Immunol 2021; 12:674803. [PMID: 34594321 PMCID: PMC8476864 DOI: 10.3389/fimmu.2021.674803] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 08/31/2021] [Indexed: 11/24/2022] Open
Abstract
Acute pancreatitis (AP) is a leading cause of death and is commonly accompanied by systemic manifestations that are generally associated with a poor prognosis. Many cytokines contribute to pancreatic tissue damage and cause systemic injury. Interleukin-17 (IL-17) is a cytokine that may play a vital role in AP. Specifically, IL-17 has important effects on the immune response and causes interactions between different inflammatory mediators in the AP-related microenvironment. In this literature review, we will discuss the existing academic understanding of IL-17 and the impacts of IL-17 in different cells (especially in acinar cells and immune system cells) in AP pathogenesis. The clinical significance and potential mechanisms of IL-17 on AP deterioration are emphasized. The evidence suggests that inhibiting the IL-17 cytokine family could alleviate the pathogenic process of AP, and we highlight therapeutic strategies that directly or indirectly target IL-17 cytokines in acute pancreatitis.
Collapse
Affiliation(s)
- Guanqun Li
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongze Chen
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Liwei Liu
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Peng Xiao
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yu Xie
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xinglong Geng
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Tao Zhang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yang Zhang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Tianqi Lu
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongtao Tan
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Le Li
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Bei Sun
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, China
| |
Collapse
|
7
|
Balaha M, Ahmed N, Geddawy A, Kandeel S. Fraxetin prevented sodium fluoride-induced chronic pancreatitis in rats: Role of anti-inflammatory, antioxidant, antifibrotic and anti-apoptotic activities. Int Immunopharmacol 2021; 93:107372. [PMID: 33524802 DOI: 10.1016/j.intimp.2021.107372] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 12/17/2020] [Accepted: 01/04/2021] [Indexed: 01/24/2023]
Abstract
Chronic pancreatitis is considered a common gastrointestinal disorder, with significant morbidity and mortality. Fluoride is an important agent for the development of our body systems, especially for bone and teeth, however on its excess consumption, it deposits in different body tissues, especially the pancreas, causing its chronic inflammation and destruction. Fraxetin proved to possess versatile activities including; antioxidant, anti-inflammatory, antifibrotic, and anti-apoptotic activities. In the present study, we have evaluated the fraxetin potentiality to prevent fluoride-induced chronic pancreatitis in rats, by evaluating animal body weights and body weight gain rate, serum amylase, and lipase activities, pancreatic oxidative stress markers, cytokines, apoptotic markers, myeloperoxidase, and hydroxyproline levels, and histopathological changes. Nine-weeks-old male Wistar rats drank distilled water containing 500 ppm sodium fluoride (NaF) for 60 days to induce chronic pancreatitis. Oral fraxetin (20, 40, and 80 mg/kg/day) received simultaneously to prevent chronic pancreatitis development. Fraxetin in a dose-dependent manner alleviated chronic pancreatitis induced by NaF, as it restored the decreased body weight and weight gain rate, decreased the elevated serum amylase and lipase activities, pancreatic IL-6, TNF-α, MDA, caspase-3, MPO and hydroxyproline levels, and Bax/Bcl-2 ratio, enhanced pancreatic CAT and SOD activities, and GSH levels, besides it augmented the elevated IL-10 level, with the restoration of normal pancreatic architecture. Therefore, fraxetin could be a promising agent recommended for the prevention of fluoride-induced chronic pancreatitis in endemic areas.
Collapse
Affiliation(s)
- Mohamed Balaha
- Clinical Pharmacy Department, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia; Pharmacology Department, Faculty of Medicine, Tanta University, El-Gish Street, Postal No. 31527, Tanta, Egypt.
| | - Nehad Ahmed
- Clinical Pharmacy Department, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Ayman Geddawy
- Pharmacology Department, Faculty of Medicine, Minia University Postal No. 31527, Minia, Egypt
| | - Samah Kandeel
- Histology Department, Faculty of Medicine, Tanta University, El-Gish Street, Postal No. 31527 Tanta, Egypt
| |
Collapse
|
8
|
Yuan J, Chheda C, Piplani H, Geng M, Tan G, Thakur R, Pandol SJ. Pancreas-specific deletion of protein kinase D attenuates inflammation, necrosis, and severity of acute pancreatitis. Biochim Biophys Acta Mol Basis Dis 2020; 1867:165987. [PMID: 33039594 DOI: 10.1016/j.bbadis.2020.165987] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 10/01/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Protein kinase D (PKD) family, which includes PKD/PKD1, PKD2, and PKD3, has been increasingly implicated in the regulation of multiple cellular functions and human diseases. We recently reported that pharmacologic inhibition of PKD ameliorated the pathologic responses and severity of pancreatitis. However, to further investigate the importance of PKD family members in pancreatitis, it is necessary to explore the effects of pancreas-specific genetic inhibition of PKD isoform on pathology of pancreatitis. METHODS We generated a mouse model (referred as PKD3Δpanc mice) with pancreas-specific deletion of PKD3, the predominant PKD isoform in mouse pancreatic acinar cells, by crossing Pkd3flox/flox mice with Pdx1-Cre transgenic mice which express Cre recombinase under the control of the mouse Pdx1 promoter. Pancreas-specific deletion of the PKD3 gene and PKD3 protein was confirmed by PCR and Western blot analysis. Experimental pancreatitis was induced in PKD3Δpanc and Pkd3flox/flox (control mice) littermates by intraperitoneal injections of cerulein or L-arginine. RESULTS Compared to the control mice, PKD3Δpanc mice displayed significant attenuation in inflammation, necrosis, and severity of pancreatitis in both experimental models. PKD3Δpanc mice had markedly decreased NF-κB and trypsinogen activation, pancreatic mRNA expression of multiple inflammatory molecules, and the receptor-interacting protein kinase 1 (RIP1) activation in pancreatitis. PKD3Δpanc mice also had less pancreatic ATP depletion, increased pro-survival Bcl-2 family protein expression, and autophagy promotion. CONCLUSION With PKD3Δpanc mouse model, we further demonstrated that PKD plays a critical role in pathobiological process of pancreatitis and PKD constitutes a novel therapeutic target to treat this disorder.
Collapse
Affiliation(s)
- Jingzhen Yuan
- Cedars-Sinai Medical Center, Los Angeles, CA, USA; Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA.
| | | | | | - Meng Geng
- Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA; Frank Netter H. School of Medicine at Quinnipiac University, CT, USA
| | - Grace Tan
- Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA; Loma Linda Medical School, Los Angeles, CA, United States of America
| | - Reetu Thakur
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Stephen J Pandol
- Cedars-Sinai Medical Center, Los Angeles, CA, USA; Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, South California Research Center for Alcoholic Liver and Pancreatic Diseases, California, USA
| |
Collapse
|
9
|
Gut Barrier Dysfunction Induced by Aggressive Fluid Resuscitation in Severe Acute Pancreatitis is Alleviated by Necroptosis Inhibition in Rats. Shock 2020; 52:e107-e116. [PMID: 30562238 DOI: 10.1097/shk.0000000000001304] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Fluid resuscitation is the first-line antishock treatment in severe acute pancreatitis (SAP). Currently, although mentions of complications related to aggressive fluid resuscitation are very frequent, a lack of proper handling of complications remains. One of the most important complications is intestinal barrier injury, including intestinal ischemia-reperfusion injury following aggressive fluid resuscitation. Once injured, the intestinal barrier may serve as the source of additional diseases, including systemic inflammatory response syndrome and multiple organ dysfunction syndrome, which aggravate SAP. This study focused on the underlying mechanisms of gut barrier dysfunction in rats induced by aggressive fluid resuscitation in SAP. This study further indicated the important role of necroptosis in intestinal barrier injury which could be relieved by using necroptosis-specific inhibitor Nec-1 before aggressive fluid resuscitation, thus reducing intestinal barrier damage. We also found pancreas damage after intestinal ischemia/reperfusion challenge and indicated the effects of high mobility group protein B1 in the vicious cycle between SAP and intestinal barrier damage.
Collapse
|
10
|
Shen S, Li B, Dai J, Wu Z, He Y, Wen L, Wang X, Hu G. BRD4 Inhibition Protects Against Acute Pancreatitis Through Restoring Impaired Autophagic Flux. Front Pharmacol 2020; 11:618. [PMID: 32457617 PMCID: PMC7227015 DOI: 10.3389/fphar.2020.00618] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/20/2020] [Indexed: 12/13/2022] Open
Abstract
Impaired autophagy has been shown to play a critical role in experimental and human acute pancreatitis (AP). However, the mechanism for transcriptional regulation of autophagy remains largely unknown. In this study, we aim to explore the role of BRD4 (bromodomain-containing protein 4), a transcriptional repressor of autophagy, during AP. Changes in pancreatic BRD4 expression and the effect of BRD4 inhibition were measured in mice with AP (induced by caerulein and ethanol and palmitoleic acid) and in isolated pancreatic acinar cells stimulated with cholecystokinin (CCK). Pancreatitis severity was evaluated by serum amylase and pancreatic histopathology. The autophagic flux, the fusion of autophagosome and lysosome, and lysosomal degradation were evaluated. Sirtuin 1 (SIRT1) expression and the effect of SIRT1 inhibition were assessed. We found that pancreatic BRD4 expression was upregulated during various models of AP. BRD4 inhibition reduced CCK-stimulated pancreatic acinar cell injury and pro-inflammatory expression in vitro and protected against two models of experimental AP. Mechanistically, BRD4 inhibition restored impaired autophagic flux via promoting autophagosome-lysosome fusion and lysosomal degradation. BRD4 inhibition also upregulated SIRT1 and inhibition of SIRT1 reversed the effects of BRD4 inhibition on autophagic flux. Our data suggest that BRD4 is a potential therapeutic target for treating AP.
Collapse
Affiliation(s)
- Shuangjun Shen
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Li
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Juanjuan Dai
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zengkai Wu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan He
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Wen
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xingpeng Wang
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guoyong Hu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
11
|
Loo LSW, Soetedjo AAP, Lau HH, Ng NHJ, Ghosh S, Nguyen L, Krishnan VG, Choi H, Roca X, Hoon S, Teo AKK. BCL-xL/BCL2L1 is a critical anti-apoptotic protein that promotes the survival of differentiating pancreatic cells from human pluripotent stem cells. Cell Death Dis 2020; 11:378. [PMID: 32424151 PMCID: PMC7235254 DOI: 10.1038/s41419-020-2589-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 11/25/2022]
Abstract
The differentiation of human pluripotent stem cells into pancreatic cells involves cellular proliferation and apoptosis during cell fate transitions. However, their implications for establishing cellular identity are unclear. Here, we profiled the expression of BCL-2 family of proteins during pancreatic specification and observed an upregulation of BCL-xL, downregulation of BAK and corresponding downregulation of cleaved CASP3 representative of apoptosis. Experimental inhibition of BCL-xL reciprocally increased apoptosis and resulted in a decreased gene expression of pancreatic markers despite a compensatory increase in anti-apoptotic protein BCL-2. RNA-Seq analyses then revealed a downregulation of multiple metabolic genes upon inhibition of BCL-xL. Follow-up bioenergetics assays revealed broad downregulation of both glycolysis and oxidative phosphorylation when BCL-xL was inhibited. Early perturbation of BCL-xL during pancreatic specification also had subsequent detrimental effects on the formation of INS+ pancreatic beta-like cells. In conclusion, the more differentiated pancreatic progenitors are dependent on anti-apoptotic BCL-xL for survival, whereas the less differentiated pancreatic progenitors that survived after WEHI-539 treatment would exhibit a more immature phenotype. Therefore, modulation of the expression level of BCL-xL can potentially increase the survival and robustness of pancreatic progenitors that ultimately define human pancreatic beta cell mass and function.
Collapse
Affiliation(s)
- Larry Sai Weng Loo
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Andreas Alvin Purnomo Soetedjo
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore
| | - Hwee Hui Lau
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Natasha Hui Jin Ng
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore
| | - Soumita Ghosh
- Computational and Statistical Systems Biology, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore
| | - Linh Nguyen
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore.,Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117596, Singapore
| | | | - Hyungwon Choi
- Computational and Statistical Systems Biology, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore
| | - Xavier Roca
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Shawn Hoon
- Molecular Engineering Lab, Proteos, Singapore, 138673, Singapore
| | - Adrian Kee Keong Teo
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology, A*STAR, Proteos, Singapore, 138673, Singapore. .,Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117596, Singapore. .,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228, Singapore.
| |
Collapse
|
12
|
Xu X, Yu H, Sun L, Zheng C, Shan Y, Zhou Z, Wang C, Chen B. Adipose‑derived mesenchymal stem cells ameliorate dibutyltin dichloride‑induced chronic pancreatitis by inhibiting the PI3K/AKT/mTOR signaling pathway. Mol Med Rep 2020; 21:1833-1840. [PMID: 32319628 PMCID: PMC7057804 DOI: 10.3892/mmr.2020.10995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 01/17/2020] [Indexed: 12/20/2022] Open
Abstract
Adipose-derived mesenchymal stem cells (ASCs) play a positive role in tissue injury repair and regeneration. The aim of this study was to determine whether ASCs could ameliorate chronic pancreatitis (CP) induced by the injection of dibutyltin dichloride (DBTC) and to elucidate its potential mechanisms. Furthermore, this study also explored whether there was a significant difference if the ASCs were injected via the inferior vena cava or the left gastric artery. CP was induced in rats by a single intravenous administration of DBTC, and the accumulation of collagen and apoptotic rates of pancreatic acinar cells were analyzed. According to the results, ASCs markedly reduced DBTC-induced pancreatic damage and collagen deposition in the rat model of CP. Moreover, ASCs significantly decreased pancreatic cell apoptosis by regulating the expression levels of caspase-3, BAX and Bcl-2. These effects were observed regardless of whether the injection was in the inferior vena cava or the left gastric artery. It was also found that the expression levels of phosphorylated PI3K, AKT and mTOR in pancreatic tissues of the DBTC-induced CP model group were significantly increased, while the expression levels of phosphorylated PI3K, AKT and mTOR in the two treatment groups were markedly decreased. ASCs noticeably suppressed the PI3K/AKT/mTOR pathway in the pancreatic tissue of DBTC-induced CP. This study indicated that ASCs protect against pancreatic fibrosis by modulating the PI3K/AKT/mTOR pathway, and have the potential to be a new strategy for the treatment of CP in the future.
Collapse
Affiliation(s)
- Xiangxiang Xu
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Huajun Yu
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Linxiao Sun
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Chenlei Zheng
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yunfeng Shan
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhenxu Zhou
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Cheng Wang
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Bicheng Chen
- Department of Surgery, Key Laboratory of Diagnosis and Treatment of Severe Hepato‑Pancreatic Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline in Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| |
Collapse
|
13
|
Huang N, Murtaza G, Wang L, Luan J, Wang X, Sun Y, Wu X, Tao Y, Shi S, Cao P, Qiao Y, Han D, Kou J, Ma N, Gao X. Chrm3 protects against acinar cell necrosis by stabilizing caspase-8 expression in severe acute pancreatitis mice model. J Cell Biochem 2019; 121:2618-2631. [PMID: 31692054 DOI: 10.1002/jcb.29483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 10/08/2019] [Indexed: 12/22/2022]
Abstract
Acinar cells in acute pancreatitis (AP) die through apoptosis and necrosis, the impacts of which are quite different. Early clinical interference strategies on preventing the progress of AP to severe acute pancreatitis (SAP) are the elimination of inflammation response and inhibition of necrosis. Muscarinic acetylcholine receptor M3 was encoded by Chrm3 gene. It is one of the best-characterized receptors of pancreatic β cells and regulates insulin secretion, but its function in AP remains unclear. In this study, we explored the function of Chrm3 gene in the regulation of cell death in l-arginine-induced SAP animal models. We found that Chrm3 was upregulated in pancreatitis, and we further confirmed the localization of Chrm3 resided in both pancreatic islets and acinar cell membranes. The reduction of Chrm3 decreased the pathological lesion of SAP and reduced amylase activities in serum. Consistently, Chrm3 can suppress acinar cells necrosis markedly, but has no effect on regulating apoptosis after l-arginine treatment. It was shown that Chrm3 attenuated acinar cells necrosis at least in part by stabilizing caspase-8. Thus, this study indicates that Chrm3 is critical participants in SAP, and regulation of Chrm3 expression might be a useful therapeutic strategy for preventing pathologic necrosis.
Collapse
Affiliation(s)
- Ning Huang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Ghulam Murtaza
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Lujing Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Jing Luan
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Xinlei Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yumiao Sun
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Xing Wu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yuxi Tao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Shuoxi Shi
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Peihua Cao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Yu Qiao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Dong Han
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Jiayuan Kou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Ning Ma
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China.,Basic Medical Institute, Heilongjiang Medical Science Academy, Harbin, China.,Translational Medicine Center of Northern China, Harbin, China.,Heilongjiang Provincial Key Laboratory of Genetically Modified Model Animal, Harbin Medical University, Harbin, China.,Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Ministry of Education, Harbin, China
| |
Collapse
|
14
|
Li Z, Mbah NE, Overmeyer JH, Sarver JG, George S, Trabbic CJ, Erhardt PW, Maltese WA. The JNK signaling pathway plays a key role in methuosis (non-apoptotic cell death) induced by MOMIPP in glioblastoma. BMC Cancer 2019; 19:77. [PMID: 30651087 PMCID: PMC6335761 DOI: 10.1186/s12885-019-5288-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 01/07/2019] [Indexed: 12/12/2022] Open
Abstract
Background Synthetic indolyl- pyridinyl- propenones (IPPs) induce methuosis, a form of non-apoptotic cell death, in glioblastoma and other cancer cell lines. Methuosis is characterized by accumulation of cytoplasmic vacuoles derived from macropinosomes and late endosomes, followed by metabolic failure and rupture of the plasma membrane. However, not all IPPs that cause vacuolization are cytotoxic. The main goals of the present study were to identify key signaling pathways that contribute to methuosis induced by cytotoxic IPPs and to evaluate the anti-tumor potential of a prototype IPP in vivo. Methods We utilized metabolic flux analysis, glucose uptake, immunoblotting, and selective pharmacological inhibitors to compare the effects of closely related cytotoxic and non-cytotoxic IPPs in cultured glioblastoma cells. To determine whether the use of methuosis-inducing IPPs might be feasible in a therapeutic context, we quantified the distribution of our lead IPP compound, MOMIPP, in mouse plasma and brain, and tested its ability to inhibit tumor growth in an intracerebral glioblastoma xenograft model. Results The cytotoxic IPP compound, MOMIPP, causes early disruptions of glucose uptake and glycolytic metabolism. Coincident with these metabolic changes, MOMIPP selectively activates the JNK1/2 stress kinase pathway, resulting in phosphorylation of c-Jun, Bcl-2 and Bcl-xL. At the same concentration, the non-cytotoxic analog, MOPIPP, does not activate these pathways. Pharmacologic inhibition of JNK activity promotes survival, even when cells are extensively vacuolated, but suppression of c-Jun transcriptional activity offers no protection. MOMIPP readily penetrates the blood-brain barrier and is moderately effective in suppressing progression of intracerebral glioblastoma xenografts. Conclusions The results suggest that interference with glucose uptake and induction of JNK-mediated phosphorylation of pro-survival members of the Bcl-2 family represent key events in the methuosis death process. In addition to providing new insights into the underlying molecular mechanism of methuosis, the results indicate that compounds of the cytotoxic IPP class may have potential for further development as therapeutic agents for brain tumors. Electronic supplementary material The online version of this article (10.1186/s12885-019-5288-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Zehui Li
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, 43614, United States
| | - Nneka E Mbah
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, 43614, United States
| | - Jean H Overmeyer
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, 43614, United States
| | - Jeffrey G Sarver
- Center for Drug Design and Development, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, 43606, USA
| | - Sage George
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, 43614, United States
| | - Christopher J Trabbic
- Center for Drug Design and Development, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, 43606, USA
| | - Paul W Erhardt
- Center for Drug Design and Development, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, 43606, USA
| | - William A Maltese
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, 43614, United States.
| |
Collapse
|
15
|
Hidayat AFA, Chan CK, Mohamad J, Kadir HA. Leptospermum flavescens Sm. protect pancreatic β cell function from streptozotocin involving apoptosis and autophagy signaling pathway in in vitro and in vivo case study. JOURNAL OF ETHNOPHARMACOLOGY 2018; 226:120-131. [PMID: 30118836 DOI: 10.1016/j.jep.2018.08.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/12/2018] [Accepted: 08/13/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL IMPORTANCE Leptospermum flavescens has been used traditionally in Malaysia to treat various ailments such as constipation, hypertension, diabetes and cancer. AIM OF STUDY To investigate the potential protective effects of L. flavescens in pancreatic β cells through inhibition of apoptosis and autophagy cell death mechanisms in in vitro and in vivo models. MATERIALS AND METHODS L. flavescens leaves were extracted using solvent in increasing polarities: hexane, ethyl acetate, methanol and water. All extracts were tested for INS-1 β cells viability stimulated by streptozotocin (STZ). The extract which promotes the highest cell protective activity was further evaluated for insulin secretion, apoptosis and autophagy signaling pathways. Then, the acute toxicity of extract was carried out in SD rats according to OECD 423 guideline. The active extract was tested in diabetic rats where the pancreatic β islets were evaluated for insulin, apoptosis and autophagy protein. RESULTS The methanolic extract of L. flavescens (MELF) was found to increase INS-1 β cells viability and insulin secretion against STZ. In addition, MELF has been shown to inhibit INS-1 β cells apoptosis and autophagy activity. Notably, there was no toxicity observed in SD rats when administered with MELF. Furthermore, MELF exhibited anti-hyperglycemic activity in diabetic rats where apoptosis and autophagy protein expression was found to be suppressed in pancreatic β islets. CONCLUSION MELF was found to protect pancreatic β cells function from STZ-induced apoptosis and autophagy in in vitro and in vivo.
Collapse
Affiliation(s)
- Ahmad Fadhlurrahman Ahmad Hidayat
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chim Kei Chan
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jamaludin Mohamad
- Biohealth Program, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Habsah Abdul Kadir
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| |
Collapse
|
16
|
Bcl-2 inhibitors as anti-cancer therapeutics: The impact of and on calcium signaling. Cell Calcium 2018; 70:102-116. [DOI: 10.1016/j.ceca.2017.05.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/24/2017] [Accepted: 05/24/2017] [Indexed: 01/08/2023]
|
17
|
Abstract
Necrosis is a hallmark of several widespread diseases or their direct complications. In the past decade, we learned that necrosis can be a regulated process that is potentially druggable. RIPK3- and MLKL-mediated necroptosis represents by far the best studied pathway of regulated necrosis. During necroptosis, the release of damage-associated molecular patterns (DAMPs) drives a phenomenon referred to as necroinflammation, a common consequence of necrosis. However, most studies of regulated necrosis investigated cell lines in vitro in a cell autonomous manner, which represents a non-physiological situation. Conclusions based on such work might not necessarily be transferrable to disease states in which synchronized, non-cell autonomous effects occur. Here, we summarize the current knowledge of the pathophysiological relevance of necroptosis in vivo, and in light of this understanding, we reassess the morphological classification of necrosis that is generally used by pathologists. Along these lines, we discuss the paucity of data implicating necroptosis in human disease. Finally, the in vivo relevance of non-necroptotic forms of necrosis, such as ferroptosis, is addressed.
Collapse
Affiliation(s)
- Wulf Tonnus
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| |
Collapse
|
18
|
TRO40303 Ameliorates Alcohol-Induced Pancreatitis Through Reduction of Fatty Acid Ethyl Ester-Induced Mitochondrial Injury and Necrotic Cell Death. Pancreas 2018; 47:18-24. [PMID: 29200128 PMCID: PMC5753827 DOI: 10.1097/mpa.0000000000000953] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Mitochondrial permeability transition pore inhibition is a promising approach to treat acute pancreatitis (AP). We sought to determine (i) the effects of the mitochondrial permeability transition pore inhibitor 3,5-seco-4-nor-cholestan-5-one oxime-3-ol (TRO40303) on murine and human pancreatic acinar cell (PAC) injury induced by fatty acid ethyl esters (FAEEs) or taurolithocholic acid-3-sulfate and (ii) TRO40303 pharmacokinetics and efficacy in experimental alcoholic AP (FAEE-AP). METHODS Changes in mitochondrial membrane potential (Δψm), cytosolic Ca ([Ca]c), and cell fate were examined in freshly isolated murine or human PACs by confocal microscopy. TRO40303 pharmacokinetics were assessed in cerulein-induced AP and therapeutic efficacy in FAEE-AP induced with palmitoleic acid and ethanol. Severity of AP was assessed by standard biomarkers and blinded histopathology. RESULTS TRO40303 prevented loss of Δψm and necrosis induced by 100 μM palmitoleic acid ethyl ester or 500 μM taurolithocholic acid-3-sulfate in murine and human PACs. Pharmacokinetic analysis found TRO40303 accumulated in the pancreas. A single dose of 3 mg/kg TRO40303 significantly reduced serum amylase (P = 0.043), pancreatic trypsin (P = 0.018), and histopathology scores (P = 0.0058) in FAEE-AP. CONCLUSIONS TRO40303 protects mitochondria and prevents necrotic cell death pathway activation in murine and human PACs, ameliorates the severity of FAEE-AP, and is a candidate drug for human AP.
Collapse
|
19
|
Yuan J, Tan T, Geng M, Tan G, Chheda C, Pandol SJ. Novel Small Molecule Inhibitors of Protein Kinase D Suppress NF-kappaB Activation and Attenuate the Severity of Rat Cerulein Pancreatitis. Front Physiol 2017; 8:1014. [PMID: 29270134 PMCID: PMC5725929 DOI: 10.3389/fphys.2017.01014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/22/2017] [Indexed: 01/09/2023] Open
Abstract
Nuclear factor-kappa B (NF-κB) activation is a key early signal regulating inflammatory and cell death responses in acute pancreatitis. Our previous in vitro studies with molecular approaches on AR42J cell showed that protein kinase D (PKD/PKD1) activation was required in NF-κB activation induced by cholecystokinin 8 (CCK) or carbachol (CCh) in pancreatic acinar cells. Recently developed small molecule PKD inhibitors, CID755673 and CRT0066101, provide potentially important pharmacological approaches to further investigate the effect of PKD in pancreatitis therapy. The aim of this study was to explore whether CID755673 and CRT0066101 block NF-κB activation with in vitro and in vivo models of experimental pancreatitis and whether the small molecule PKD inhibitors have therapeutic effects when given before or after the initiation of experimental pancreatitis. Freshly prepared pancreatic acini were incubated with CID755673 or CRT006101, followed by hyperstimulation with CCK or CCh. For in vivo experimental pancreatitis, rats were treated with intraperitoneal injection of CID755673 or CRT0066101 prior to or after administering cerulein or saline. PKD activation and NF-κB-DNA binding activity in nuclear extracts from pancreatic acini and tissue were measured. The effects of PKD inhibitors on pancreatitis responses were evaluated. Our results showed that both CID755673 or CRT0066101 selectively and specifically inhibited PKD without effects on related protein kinase Cs. Inhibition of PKD resulted in significantly attenuation of NF-κB activation in both in vitro and in vivo models of experimental pancreatitis. NF-κB inhibition by CID755673 was associated with decreased inflammatory responses and attenuated severity of the disease, which were indicated by less inflammatory cell infiltration, reduced pancreatic interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1), decreased intrapancreatic trypsin activation, and alleviation in pancreatic necrosis, edema and vacuolization. Furthermore, PKD inhibitor CID755673, given after the initiation of pancreatitis in experimental rat model, significantly attenuated the severity of acute pancreatitis. Therapies for acute pancreatitis are limited. Our results indicate that small chemical PKD inhibitors have significant potential as therapeutic interventions by suppressing NF-κB activation.
Collapse
Affiliation(s)
- Jingzhen Yuan
- Cedars-Sinai Medical Center, Los Angeles, CA, United States.,Veterans Affairs Greater Los Angeles Healthcare System, Department of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Tanya Tan
- Veterans Affairs Greater Los Angeles Healthcare System, Department of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.,Georgetown University Medical Center, Washington, DC, United States
| | - Meng Geng
- Veterans Affairs Greater Los Angeles Healthcare System, Department of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.,Frank Netter H. School of Medicine at Quinnipiac University, Hamden, CT, United States
| | - Grace Tan
- Veterans Affairs Greater Los Angeles Healthcare System, Department of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.,Vanderbilt University, Nashville, TN, United States
| | - Chintan Chheda
- Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Stephen J Pandol
- Cedars-Sinai Medical Center, Los Angeles, CA, United States.,Veterans Affairs Greater Los Angeles Healthcare System, Department of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| |
Collapse
|
20
|
Lugea A, Waldron RT, Mareninova OA, Shalbueva N, Deng N, Su HY, Thomas DD, Jones EK, Messenger SW, Yang J, Hu C, Gukovsky I, Liu Z, Groblewski GE, Gukovskaya AS, Gorelick FS, Pandol SJ. Human Pancreatic Acinar Cells: Proteomic Characterization, Physiologic Responses, and Organellar Disorders in ex Vivo Pancreatitis. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:2726-2743. [PMID: 28935577 DOI: 10.1016/j.ajpath.2017.08.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 06/30/2017] [Accepted: 08/03/2017] [Indexed: 12/17/2022]
Abstract
Knowledge of the molecular mechanisms of acute pancreatitis is largely based on studies using rodents. To assess similar mechanisms in humans, we performed ex vivo pancreatitis studies in human acini isolated from cadaveric pancreata from organ donors. Because data on these human acinar preparations are sparse, we assessed their functional integrity and cellular and organellar morphology using light, fluorescence, and electron microscopy; and their proteome by liquid chromatography-tandem mass spectrometry. Acinar cell responses to the muscarinic agonist carbachol (CCh) and the bile acid taurolithocholic acid 3-sulfate were also analyzed. Proteomic analysis of acini from donors of diverse ethnicity showed similar profiles of digestive enzymes and proteins involved in translation, secretion, and endolysosomal function. Human acini preferentially expressed the muscarinic acetylcholine receptor M3 and maintained physiological responses to CCh for at least 20 hours. As in rodent acini, human acini exposed to toxic concentrations of CCh and taurolithocholic acid 3-sulfate responded with trypsinogen activation, decreased cell viability, organelle damage manifest by mitochondrial depolarization, disordered autophagy, and pathological endoplasmic reticulum stress. Human acini also secreted inflammatory mediators elevated in acute pancreatitis patients, including IL-6, tumor necrosis factor-α, IL-1β, chemokine (C-C motif) ligands 2 and 3, macrophage inhibitory factor, and chemokines mediating neutrophil and monocyte infiltration. In conclusion, human cadaveric pancreatic acini maintain physiological functions and have similar pathological responses and organellar disorders with pancreatitis-causing treatments as observed in rodent acini.
Collapse
Affiliation(s)
- Aurelia Lugea
- Department of Medicine and Biomedical Sciences, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California; Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California.
| | - Richard T Waldron
- Department of Medicine and Biomedical Sciences, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California; Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California
| | - Olga A Mareninova
- Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California
| | - Natalia Shalbueva
- Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California
| | - Nan Deng
- Department of Biostatistics and Bioinformatics, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Hsin-Yuan Su
- Department of Medicine and Biomedical Sciences, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Diane D Thomas
- Department of Nutritional Sciences, University of Wisconsin, Madison, Wisconsin
| | - Elaina K Jones
- Department of Nutritional Sciences, University of Wisconsin, Madison, Wisconsin
| | - Scott W Messenger
- Department of Nutritional Sciences, University of Wisconsin, Madison, Wisconsin
| | - Jiayue Yang
- Department of Medicine and Biomedical Sciences, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Cheng Hu
- Department of Medicine and Biomedical Sciences, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Ilya Gukovsky
- Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California
| | - Zhenqiu Liu
- Department of Biostatistics and Bioinformatics, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Guy E Groblewski
- Department of Nutritional Sciences, University of Wisconsin, Madison, Wisconsin
| | - Anna S Gukovskaya
- Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California
| | - Fred S Gorelick
- Departments of Internal Medicine and Cell Biology, Yale University School of Medicine, New Haven, Connecticut; Veterans Administration Connecticut Healthcare, West Haven, Connecticut
| | - Stephen J Pandol
- Department of Medicine and Biomedical Sciences, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California; Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California; Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California
| |
Collapse
|
21
|
Márta K, Szabó AN, Pécsi D, Varjú P, Bajor J, Gódi S, Sarlós P, Mikó A, Szemes K, Papp M, Tornai T, Vincze Á, Márton Z, Vincze PA, Lankó E, Szentesi A, Molnár T, Hágendorn R, Faluhelyi N, Battyáni I, Kelemen D, Papp R, Miseta A, Verzár Z, Lerch MM, Neoptolemos JP, Sahin-Tóth M, Petersen OH, Hegyi P. High versus low energy administration in the early phase of acute pancreatitis (GOULASH trial): protocol of a multicentre randomised double-blind clinical trial. BMJ Open 2017; 7:e015874. [PMID: 28912191 PMCID: PMC5722094 DOI: 10.1136/bmjopen-2017-015874] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Acute pancreatitis (AP) is an inflammatory disease with no specific treatment. Mitochondrial injury followed by ATP depletion in both acinar and ductal cells is a recently discovered early event in its pathogenesis. Importantly, preclinical research has shown that intracellular ATP delivery restores the physiological function of the cells and protects from cell injury, suggesting that restoration of energy levels in the pancreas is therapeutically beneficial. Despite several high quality experimental observations in this area, no randomised trials have been conducted to date to address the requirements for energy intake in the early phase of AP. METHODS/DESIGN This is a randomised controlled two-arm double-blind multicentre trial. Patients with AP will be randomly assigned to groups A (30 kcal/kg/day energy administration starting within 24 hours of hospital admission) or B (low energy administration during the first 72 hours of hospital admission). Energy will be delivered by nasoenteric tube feeding with additional intravenous glucose supplementation or total parenteral nutrition if necessary. A combination of multiorgan failure for more than 48 hours and mortality is defined as the primary endpoint, whereas several secondary endpoints such as length of hospitalisation or pain will be determined to elucidate more detailed differences between the groups. The general feasibility, safety and quality checks required for high quality evidence will be adhered to. ETHICS AND DISSEMINATION The study has been approved by the relevant organisation, the Scientific and Research Ethics Committee of the Hungarian Medical Research Council (55961-2/2016/EKU). This study will provide evidence as to whether early high energy nutritional support is beneficial in the clinical management of AP. The results of this trial will be published in an open access way and disseminated among medical doctors. TRIAL REGISTRATION The trial has been registered at the ISRCTN (ISRTCN 63827758).
Collapse
Affiliation(s)
- Katalin Márta
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
| | - Anikó N Szabó
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
| | - Dániel Pécsi
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
| | - Péter Varjú
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
| | - Judit Bajor
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Szilárd Gódi
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Patrícia Sarlós
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Alexandra Mikó
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Kata Szemes
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Mária Papp
- 2nd Department of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Tamás Tornai
- 2nd Department of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Áron Vincze
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Zsolt Márton
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Patrícia A Vincze
- Department of Pharmaceutics and Central Clinical Pharmacy, University of Pécs, Pécs, Hungary
| | - Erzsébet Lankó
- Department of Pharmaceutics and Central Clinical Pharmacy, University of Pécs, Pécs, Hungary
| | - Andrea Szentesi
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
- MTA-SZTE Translational Gastroenterology Research Group, Szeged, Hungary
| | - Tímea Molnár
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
| | - Roland Hágendorn
- 1st Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | | | | | | | - Róbert Papp
- Surgery Clinic, University of Pécs, Pécs, Hungary
| | - Attila Miseta
- Department of Laboratory Medicine, University of Pécs, Pécs, Hungary
| | - Zsófia Verzár
- Department of Emergency Medicine, University of Pécs, Pécs, Hungary
| | - Markus M Lerch
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - John P Neoptolemos
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Miklós Sahin-Tóth
- Center for Exocrine Disorders, Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts, USA
| | - Ole H Petersen
- Medical Research Council Group, Cardiff School of Biosciences, Cardiff University, Cardiff, UK
| | - Péter Hegyi
- Institute for Translational Medicine, University of Pécs, Pecs, Hungary
- MTA-SZTE Translational Gastroenterology Research Group, Szeged, Hungary
| |
Collapse
|
22
|
Wu J, Mulatibieke T, Ni J, Han X, Li B, Zeng Y, Wan R, Wang X, Hu G. Dichotomy between Receptor-Interacting Protein 1– and Receptor-Interacting Protein 3–Mediated Necroptosis in Experimental Pancreatitis. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:1035-1048. [DOI: 10.1016/j.ajpath.2016.12.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 12/28/2016] [Accepted: 12/29/2016] [Indexed: 12/21/2022]
|
23
|
Deletion Of XIAP reduces the severity of acute pancreatitis via regulation of cell death and nuclear factor-κB activity. Cell Death Dis 2017; 8:e2685. [PMID: 28300832 PMCID: PMC5386564 DOI: 10.1038/cddis.2017.70] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 01/10/2017] [Accepted: 01/24/2017] [Indexed: 02/05/2023]
Abstract
Severe acute pancreatitis (SAP) still remains a clinical challenge, not only for its high mortality but the uncontrolled inflammatory progression from acute pancreatitis (AP) to SAP. Cell death, including apoptosis and necrosis are critical pathology of AP, since the severity of pancreatitis correlates directly with necrosis and inversely with apoptosis Therefore, regulation of cell death from necrosis to apoptosis may have practicably therapeutic value. X-linked inhibitor of apoptosis protein (XIAP) is the best characterized member of the inhibitor of apoptosis proteins (IAP) family, but its function in AP remains unclear. In the present study, we investigated the potential role of XIAP in regulation of cell death and inflammation during acute pancreatitis. The in vivo pancreatitis model was induced by the administration of cerulein with or without lipopolysaccharide (LPS) or by the administration of l-arginine in wild-type or XIAP-deficient mice, and ex vivo model was induced by the administration of cerulein+LPS in AR42J cell line following XIAP inhibition. The severity of acute pancreatitis was determined by serum amylase activity and histological grading. XIAP deletion on cell apoptosis, necrosis and inflammatory response were examined. Caspases activities, nuclear factor-κB (NF-κB) activation and receptor-interacting protein kinase1 (RIP1) degradation were assessed by western blot. Deletion of XIAP resulted in the reduction of amylase activity, decrease of NF-κB activation and less release of TNF-α and IL-6, together with increased caspases activities and RIP1 degradation, leading to enhanced apoptosis and reduced necrosis in pancreatic acinar cells and ameliorated the severity of acute pancreatitis. Our results indicate that deletion of XIAP switches cell death away from necrosis to apoptosis and decreases the inflammatory response, effectively attenuating the severity of AP/SAP. The critical role of XIAP in cell death and inflammation suggests that inhibition of XIAP represents a potential therapeutic strategy for the treatment of acute pancreatitis.
Collapse
|
24
|
Du D, Jin T, Zhang R, Hu L, Xing Z, Shi N, Shen Y, Gong M. Phenolic compounds isolated from Dioscorea zingiberensis protect against pancreatic acinar cells necrosis induced by sodium taurocholate. Bioorg Med Chem Lett 2017; 27:1467-1470. [PMID: 28228364 DOI: 10.1016/j.bmcl.2017.01.014] [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: 11/16/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 02/05/2023]
Abstract
One new bibenzyl (1) and one new phenanthrene (2), together with two known bibenzyls (3-4) and four known diarylheptanoids (5-8) were isolated from the rhizomes of Dioscorea zingiberensis. The structures of 1-2 were elucidated by spectroscopic methods including 1D and 2D NMR. Phenols 1-8 were evaluated for their anti-pancreatitic activities on sodium taurocholate (NaT)-induced pancreatic acinars necrosis. Notably, 0.5mM of compound 6 exhibited comparable inhibitory effect with 5mM of caffeine. Furthermore, compound 6 prevented the ATP depletion and excessive ROS production which could be also involved in mitochondria-mediated injuries in acute pancreatitis. As a result, compound 6 has been demonstrated to be a potential candidate for mediating mitochondrial dysfunction to prevent pancreatic necrosis. This study is also the first report on the isolation of bibenzyls and diarylheptanoids from this plant.
Collapse
Affiliation(s)
- Dan Du
- West China-Washington Mitochondria and Metabolism Center, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China.
| | - Tao Jin
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Rui Zhang
- Laboratory of Ethnopharmacology, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Liqiang Hu
- West China-Washington Mitochondria and Metabolism Center, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Zhihua Xing
- Laboratory of Ethnopharmacology, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Na Shi
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Yan Shen
- Laboratory of Ethnopharmacology, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Meng Gong
- West China-Washington Mitochondria and Metabolism Center, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China.
| |
Collapse
|
25
|
Zhang R, Wen L, Shen Y, Shi N, Xing Z, Xia Q, Niu H, Huang W. One compound of saponins from Disocorea zingiberensis protected against experimental acute pancreatitis by preventing mitochondria-mediated necrosis. Sci Rep 2016; 6:35965. [PMID: 27779235 PMCID: PMC5078795 DOI: 10.1038/srep35965] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 10/06/2016] [Indexed: 02/05/2023] Open
Abstract
Acute pancreatitis (AP) is a painful inflammatory disorder of the exocrine pancreas, ranking as the most common gastrointestinal reasons for hospitalization with no specific therapy currently. Diosgenyl saponins extracted from natural products and diosgenin or its derivatives have been shown to exert anti-inflammatory effects in various diseases. However, the therapeutic effects of diosgenyl saponins from Dioscorea zingiberensis C. H. Wright in AP have not yet been determined. Five compounds were extracted and screened for taurocholate-induced necrosis in mouse pancreatic acinar cells. Particularly, 26-O-β-d-glucopyranosyl-3β, 22α, 26-trihydroxy-25(R)-furosta-5-en-3-O-[α-L-rhamnopyranosyl-(1 → 4)]-β-d-glucopyranoside (compound 1) exhibited the best protective effects with no toxicity observed. Next, we showed compound 1 concentration-dependently inhibited necrotic cell death pathway activation and 2.5 mM compound 1 also prevented the loss of mitochondrial membrane potential, adenosine triphosphate production, and reactive oxygen species generation in mouse pancreatic acinar cells. Finally, we showed compound 1 protected against three clinically representative murine models of AP and significantly improved pancreatitis-associated acute lung injury. These data provide in vitro and in vivo evidence that one compound of diosgenyl saponins can be potential treatment for AP. This study suggests natural saponins may serve as fruitful sources for exploring/identifying potential therapies for inflammatory diseases.
Collapse
Affiliation(s)
- Rui Zhang
- Laboratory of Ethnopharmacology, Regenerative Medicine Research Center, West China Hospital/West China Medical School, Sichuan University, Chengdu, China
| | - Li Wen
- Department of Pediatric Gastroenterology, Children’s Hospital of Pittsburgh of UPMC and School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yan Shen
- Laboratory of Ethnopharmacology, Regenerative Medicine Research Center, West China Hospital/West China Medical School, Sichuan University, Chengdu, China
| | - Na Shi
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zhihua Xing
- Laboratory of Ethnopharmacology, Regenerative Medicine Research Center, West China Hospital/West China Medical School, Sichuan University, Chengdu, China
| | - Qing Xia
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hai Niu
- Laboratory of Ethnopharmacology, Regenerative Medicine Research Center, West China Hospital/West China Medical School, Sichuan University, Chengdu, China
- College of Mathematics, Sichuan University, Chengdu, Sichuan, China
| | - Wen Huang
- Laboratory of Ethnopharmacology, Regenerative Medicine Research Center, West China Hospital/West China Medical School, Sichuan University, Chengdu, China
| |
Collapse
|
26
|
Mukherjee R, Mareninova OA, Odinokova IV, Huang W, Murphy J, Chvanov M, Javed MA, Wen L, Booth DM, Cane MC, Awais M, Gavillet B, Pruss RM, Schaller S, Molkentin JD, Tepikin AV, Petersen OH, Pandol SJ, Gukovsky I, Criddle DN, Gukovskaya AS, Sutton R. Mechanism of mitochondrial permeability transition pore induction and damage in the pancreas: inhibition prevents acute pancreatitis by protecting production of ATP. Gut 2016; 65:1333-46. [PMID: 26071131 PMCID: PMC4920725 DOI: 10.1136/gutjnl-2014-308553] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 03/16/2015] [Accepted: 04/07/2015] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Acute pancreatitis is caused by toxins that induce acinar cell calcium overload, zymogen activation, cytokine release and cell death, yet is without specific drug therapy. Mitochondrial dysfunction has been implicated but the mechanism not established. DESIGN We investigated the mechanism of induction and consequences of the mitochondrial permeability transition pore (MPTP) in the pancreas using cell biological methods including confocal microscopy, patch clamp technology and multiple clinically representative disease models. Effects of genetic and pharmacological inhibition of the MPTP were examined in isolated murine and human pancreatic acinar cells, and in hyperstimulation, bile acid, alcoholic and choline-deficient, ethionine-supplemented acute pancreatitis. RESULTS MPTP opening was mediated by toxin-induced inositol trisphosphate and ryanodine receptor calcium channel release, and resulted in diminished ATP production, leading to impaired calcium clearance, defective autophagy, zymogen activation, cytokine production, phosphoglycerate mutase 5 activation and necrosis, which was prevented by intracellular ATP supplementation. When MPTP opening was inhibited genetically or pharmacologically, all biochemical, immunological and histopathological responses of acute pancreatitis in all four models were reduced or abolished. CONCLUSIONS This work demonstrates the mechanism and consequences of MPTP opening to be fundamental to multiple forms of acute pancreatitis and validates the MPTP as a drug target for this disease.
Collapse
Affiliation(s)
- Rajarshi Mukherjee
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Olga A Mareninova
- Veterans Affairs Greater Los Angeles Healthcare System, University of California Los Angeles and Southern California Research Center for Alcoholic Liver and Pancreatic Diseases and Cirrhosis, Los Angeles, California, USA
| | - Irina V Odinokova
- Veterans Affairs Greater Los Angeles Healthcare System, University of California Los Angeles and Southern California Research Center for Alcoholic Liver and Pancreatic Diseases and Cirrhosis, Los Angeles, California, USA
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Russia
| | - Wei Huang
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
- Department of Integrated Traditional and Western Medicine, Sichuan Provincial Pancreatitis Centre, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - John Murphy
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Michael Chvanov
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Muhammad A Javed
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Li Wen
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - David M Booth
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Matthew C Cane
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Muhammad Awais
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Bruno Gavillet
- Debiopharm Research and Manufacturing S.A., Lausanne, Switzerland
| | | | | | - Jeffery D Molkentin
- Howard Hughes Medical Institute, Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Alexei V Tepikin
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Ole H Petersen
- Cardiff School of Biosciences, University of Cardiff, Cardiff, Wales, UK
| | - Stephen J Pandol
- Veterans Affairs Greater Los Angeles Healthcare System, University of California Los Angeles and Southern California Research Center for Alcoholic Liver and Pancreatic Diseases and Cirrhosis, Los Angeles, California, USA
| | - Ilya Gukovsky
- Veterans Affairs Greater Los Angeles Healthcare System, University of California Los Angeles and Southern California Research Center for Alcoholic Liver and Pancreatic Diseases and Cirrhosis, Los Angeles, California, USA
| | - David N Criddle
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Anna S Gukovskaya
- Veterans Affairs Greater Los Angeles Healthcare System, University of California Los Angeles and Southern California Research Center for Alcoholic Liver and Pancreatic Diseases and Cirrhosis, Los Angeles, California, USA
| | - Robert Sutton
- NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool, UK
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| |
Collapse
|
27
|
Nuche-Berenguer B, Ramos-Álvarez I, Jensen RT. Src kinases play a novel dual role in acute pancreatitis affecting severity but no role in stimulated enzyme secretion. Am J Physiol Gastrointest Liver Physiol 2016; 310:G1015-27. [PMID: 27033118 PMCID: PMC4935475 DOI: 10.1152/ajpgi.00349.2015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 03/28/2016] [Indexed: 01/31/2023]
Abstract
In pancreatic acinar cells, the Src family of kinases (SFK) is involved in the activation of several signaling cascades that are implicated in mediating cellular processes (growth, cytoskeletal changes, apoptosis). However, the role of SFKs in various physiological responses such as enzyme secretion or in pathophysiological processes such as acute pancreatitis is either controversial, unknown, or incompletely understood. To address this, in this study, we investigated the role/mechanisms of SFKs in acute pancreatitis and enzyme release. Enzyme secretion was studied in rat dispersed pancreatic acini, in vitro acute-pancreatitis-like changes induced by supramaximal COOH-terminal octapeptide of cholecystokinin (CCK). SFK involvement assessed using the chemical SFK inhibitor (PP2) with its inactive control, 4-amino-7-phenylpyrazol[3,4-d]pyrimidine (PP3), under experimental conditions, markedly inhibiting SFK activation. In CCK-stimulated pancreatic acinar cells, activation occurred of trypsinogen, various MAP kinases (p42/44, JNK), transcription factors (signal transducer and activator of transcription-3, nuclear factor-κB, activator protein-1), caspases (3, 8, and 9) inducing apoptosis, LDH release reflective of necrosis, and various chemokines secreted (monocyte chemotactic protein-1, macrophage inflammatory protein-1α, regulated on activation, normal T cell expressed and secreted). All were inhibited by PP2, not by PP3, except caspase activation leading to apoptosis, which was increased, and trypsin activation, which was unaffected, as was CCK-induced amylase release. These results demonstrate SFK activation is playing a dual role in acute pancreatitis, inhibiting apoptosis and promoting necrosis as well as chemokine/cytokine release inducing inflammation, leading to more severe disease, as well as not affecting secretion. Thus, our studies indicate that SFK is a key mediator of inflammation and pancreatic acinar cell death in acute pancreatitis, suggesting it could be a potential therapeutic target in acute pancreatitis.
Collapse
Affiliation(s)
- Bernardo Nuche-Berenguer
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Irene Ramos-Álvarez
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - R. T. Jensen
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| |
Collapse
|
28
|
Formula Compatibility Identification of Dachengqi Decoction Based on the Effects of Absorbed Components in Cerulein-Injured Pancreatic AR42J Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:3198549. [PMID: 27123032 PMCID: PMC4830714 DOI: 10.1155/2016/3198549] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/19/2016] [Accepted: 01/28/2016] [Indexed: 02/05/2023]
Abstract
Objective. To identify the herbal formula compatibility law based on the effects of the absorbed components from DCQD on the cerulein-injured AR42J cells. Methods. AR42J cells were pretreated for 30 min with or without the different concentrations of the absorbed components from DCQD individually or in combination or DCQD and coincubated with cerulein (10 nM) for a further 24 h. Cell viability, lactate dehydrogenase (LDH) release, and the levels of apoptosis and necrosis were measured. Results. Compared to DCQD, the individual or combination components partially protected cerulein-injured AR42J cells by increasing cell viability, reducing LDH release, and promoting apoptosis. Rhein, naringin, and honokiol were the main absorbed components from DCQD in cerulein-induced pancreatitis. Moreover, rhein in combination with naringin and honokiol had synergistic effects in protecting cerulein-injured AR42J cells and was better than the individual or the pairwise combination of the three components. Conclusions. The ten effective components from DCQD may elicit similar protective effects as DCQD on cerulein-induced pancreatitis. The principle of the formula compatibility of DCQD may be identified based on the effects of its absorbed components in cerulein-injured AR42J cells.
Collapse
|
29
|
Zhuang X, Shen J, Jia Z, Wu A, Xu T, Shi Y, Xu C. Anti-B7-H3 monoclonal antibody ameliorates the damage of acute experimental pancreatitis by attenuating the inflammatory response. Int Immunopharmacol 2016; 35:1-6. [PMID: 27003113 DOI: 10.1016/j.intimp.2016.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/24/2016] [Accepted: 03/11/2016] [Indexed: 10/22/2022]
Abstract
B7-H3, a recently discovered B7 family member, is documented as a regulator in the inflammatory response as well as T cell-mediated immune responses. In this paper, we find that patients with acute pancreatitis revealed overwhelming levels of serum soluble B7-H3 (sB7-H3) associated with the clinical outcomes. Furthermore, B7-H3 protein was marked increased in l-arginine-induced acute experimental pancreatitis. Anti-B7-H3 monoclonal antibody treatment attenuated the proinflammatory cytokine production, downregulated the activation of the NF-κB signaling pathway, and ameliorated the pancreas disruption in l-arginine-induced pancreatitis. In addition, although l-arginine alone failed to induce the production of proinflammatory cytokine and anti-B7-H3 mAb had no effect on the proinflammatory cytokine production of acinar cells, administration of anti-B7-H3 mAb in the coculture model of acinar cells and macrophages stimulated by l-arginine displayed the similar effects. On the whole, B7-H3 participates in the development of acute pancreatitis, and anti-B7-H3 monoclonal antibody ameliorates severity of acute experimental pancreatitis via attenuation of the inflammatory response.
Collapse
Affiliation(s)
- Xiaohui Zhuang
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Jiaqing Shen
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Zhengyu Jia
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Airong Wu
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Ting Xu
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Yuqi Shi
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Chunfang Xu
- Department of Gastroenterology and Digestive Diseases, the First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China.
| |
Collapse
|
30
|
Nuche-Berenguer B, Ramos-Álvarez I, Jensen RT. The p21-activated kinase, PAK2, is important in the activation of numerous pancreatic acinar cell signaling cascades and in the onset of early pancreatitis events. Biochim Biophys Acta Mol Basis Dis 2016; 1862:1122-36. [PMID: 26912410 DOI: 10.1016/j.bbadis.2016.02.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 02/02/2016] [Accepted: 02/17/2016] [Indexed: 12/30/2022]
Abstract
In a recent study we explored Group-1-p21-activated kinases (GP.1-PAKs) in rat pancreatic acini. Only PAK2 was present; it was activated by gastrointestinal-hormones/neurotransmitters and growth factors in a PKC-, Src- and small-GTPase-mediated manner. PAK2 was required for enzyme-secretion and ERK/1-2-activation. In the present study we examined PAK2's role in CCK and TPA-activation of important distal signaling cascades mediating their physiological/pathophysiological effects and analyzed its role in pathophysiological processes important in early pancreatitis. In rat pancreatic acini, PAK2-inhibition by the specific, GP.1.PAK-inhibitor, IPA-3-suppressed cholecystokinin (CCK)/TPA-stimulated activation of focal-adhesion kinases and mitogen-activated protein-kinases. PAK2-inhibition reversed the dual stimulatory/inhibitory effect of CCK/TPA on the PI3K/Akt/GSK-3β pathway. However, its inhibition did not affect PKC activation. PAK2-inhibition protected acini from CCK-induced ROS-generation; caspase/trypsin-activation, important in early pancreatitis; as well as from cell-necrosis. Furthermore, PAK2-inhibition reduced proteolytic-activation of PAK-2p34, which is involved in programmed-cell-death. To ensure that the study did not only rely in the specificity of IPA-3 as a PAK inhibitor, we used two other approaches for PAK inhibition, FRAX597 a ATP-competitive-GP.1-PAKs-inhibitor and infection with a PAK2-dominant negative(DN)-Advirus. Those two approaches confirmed the results obtained with IPA-3. This study demonstrates that PAK2 is important in mediating CCK's effect on the activation of signaling-pathways known to mediate its physiological/pathophysiological responses including several cellular processes linked to the onset of pancreatitis. Our results suggest that PAK2 could be a new, important therapeutic target to consider for the treatment of diseases involving deregulation of pancreatic acinar cells.
Collapse
Affiliation(s)
- Bernardo Nuche-Berenguer
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-1804, USA
| | - Irene Ramos-Álvarez
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-1804, USA
| | - R T Jensen
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-1804, USA.
| |
Collapse
|
31
|
Yu LT, Yang MQ, Liu JL, Alfred MO, Li X, Zhang XQ, Zhang J, Wu MY, Wang M, Luo C. Recombinant Reg3α protein protects against experimental acute pancreatitis in mice. Mol Cell Endocrinol 2016; 422:150-159. [PMID: 26683606 DOI: 10.1016/j.mce.2015.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/19/2015] [Accepted: 12/01/2015] [Indexed: 12/27/2022]
Abstract
Regenerating gene 3α (Reg3α) protein is a trophic factor that stimulates cell and tissue proliferation, neogenesis and also acts against apoptosis and necrosis. In order to explore the potential roles of recombinant Reg3α (rReg3α), we produced a mature rReg3α polypeptide for direct administration in l-arginine (L-Arg) induced acute pancreatitis (AP) in mice. Our results showed that rReg3α stimulated cell proliferation through Erk1/2 and p38 phosphorylation and also cyclin D1 upregulation mediated by Akt/ATF-2 signaling. Moreover, rReg3α administration significantly reduced the pancreatic damage caused by L-Arg injection, as shown in histological examination and serum amylase, lipase and C-reactive protein (CRP) assays. Not only acinar cell necrosis but also apoptosis found in the pancreas of AP mice were alleviated by rReg3α. Finally, upregulated Bcl-2 and Bcl-xL and suppressed poly (ADP-ribose) synthetase/polymerase (PARP) levels were detected as being relevant to the mechanism of rReg3α protection. We therefore conclude that rReg3α acts as a protective polypeptide against AP in mice by enhancing Bcl-2 and Bcl-xL expressions and suppressing PARP level.
Collapse
MESH Headings
- Acinar Cells/drug effects
- Animals
- Antigens, Neoplasm/administration & dosage
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/metabolism
- Antigens, Neoplasm/pharmacology
- Apoptosis/drug effects
- Arginine/adverse effects
- Biomarkers, Tumor/administration & dosage
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Biomarkers, Tumor/pharmacology
- Cell Line
- Cell Proliferation
- Disease Models, Animal
- Female
- Gene Expression Regulation/drug effects
- Humans
- Lectins, C-Type/administration & dosage
- Lectins, C-Type/genetics
- Lectins, C-Type/metabolism
- Mice
- Pancreatitis/chemically induced
- Pancreatitis/pathology
- Pancreatitis/prevention & control
- Pancreatitis-Associated Proteins
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Recombinant Proteins/administration & dosage
- Recombinant Proteins/genetics
- Recombinant Proteins/pharmacology
- Signal Transduction/drug effects
Collapse
Affiliation(s)
- Lu-Ting Yu
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China
| | - Meng-Qi Yang
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China
| | - Jun-Li Liu
- Fraser Laboratories for Diabetes Research, Department of Medicine, McGill University Health Centre, Montreal, Canada
| | - Martin O Alfred
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China
| | - Xiang Li
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China
| | - Xue-Qing Zhang
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China
| | - Juan Zhang
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China; State Key Laboratory of Nature Medicines China Pharmaceutical University, Nanjing, China
| | - Ming-Yuan Wu
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China
| | - Min Wang
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China; State Key Laboratory of Nature Medicines China Pharmaceutical University, Nanjing, China.
| | - Chen Luo
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, China; State Key Laboratory of Nature Medicines China Pharmaceutical University, Nanjing, China.
| |
Collapse
|
32
|
Abstract
Acute pancreatitis (AP) is an inflammatory disorder of the exocrine pancreas frequently associated with metabolic causes, contributing factors, or consequences, including hypertriglyceridemia, obesity, and disorders of intermediary metabolism, respectively. To date, there is no specific therapy for this disease. Future optimal therapy should correct both inflammatory and metabolic components of the disease. Peroxisome proliferator-activated receptors (PPARs) are lipid-sensing nuclear receptors that control inflammatory and metabolic pathways via ligand-dependent and ligand-independent mechanisms. There are 3 known subtypes, PPAR-α, PPAR-β/δ, and PPAR-γ, which are differentially expressed in various tissues. The PPARs interact closely with other transcription factors such as nuclear factor κB and signal tranducers and activators of transcription that have pivotal roles in the pathobiology of AP. In this comprehensive review, we summarize the role of PPARs in AP, highlighting important in vitro and in vivo experimental findings. Finally, we propose future research directions as well as potential translational use of PPAR agonists in the treatment of AP.
Collapse
|
33
|
Mareninova OA, Sendler M, Malla SR, Yakubov I, French SW, Tokhtaeva E, Vagin O, Oorschot V, Lüllmann-Rauch R, Blanz J, Dawson D, Klumperman J, Lerch MM, Mayerle J, Gukovsky I, Gukovskaya AS. Lysosome associated membrane proteins maintain pancreatic acinar cell homeostasis: LAMP-2 deficient mice develop pancreatitis. Cell Mol Gastroenterol Hepatol 2015; 1:678-694. [PMID: 26693174 PMCID: PMC4673685 DOI: 10.1016/j.jcmgh.2015.07.006] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS The pathogenic mechanism of pancreatitis is poorly understood. Recent evidence implicates defective autophagy in pancreatitis responses; however, the pathways mediating impaired autophagy in pancreas remain largely unknown. Here, we investigate the role of lysosome associated membrane proteins (LAMPs) in pancreatitis. METHODS We analyzed changes in LAMPs in experimental models and human pancreatitis, and the underlying mechanisms: LAMP de-glycosylation and degradation. LAMP cleavage by cathepsin B (CatB) was analyzed by mass spectrometry. We used mice deficient in LAMP-2 to assess its role in pancreatitis. RESULTS Pancreatic levels of LAMP-1 and LAMP-2 greatly decrease across various pancreatitis models and in human disease. Pancreatitis does not trigger LAMPs' bulk de-glycosylation, but induces their degradation via CatB-mediated cleavage of LAMP molecule close to the boundary between luminal and transmembrane domains. LAMP-2 null mice spontaneously develop pancreatitis that begins with acinar cell vacuolization due to impaired autophagic flux, and progresses to severe pancreas damage characterized by trypsinogen activation, macrophage-driven inflammation, and acinar cell death. LAMP-2 deficiency causes a decrease in pancreatic digestive enzymes content, stimulates the basal and inhibits CCK-induced amylase secretion by acinar cells. The effects of LAMP-2 knockout and acute cerulein pancreatitis overlap, which corroborates the pathogenic role of LAMP decrease in experimental pancreatitis models. CONCLUSIONS The results indicate a critical role for LAMPs, particularly LAMP-2, in maintaining pancreatic acinar cell homeostasis, and provide evidence that defective lysosomal function, resulting in impaired autophagy, leads to pancreatitis. Mice with LAMP-2 deficiency present a novel genetic model of human pancreatitis caused by lysosomal/autophagic dysfunction.
Collapse
Affiliation(s)
- Olga A. Mareninova
- VA Greater Los Angeles Healthcare System, Los Angeles, California
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | - Matthias Sendler
- Department of Medicine A, University Medicine, Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Sudarshan Ravi Malla
- Department of Medicine A, University Medicine, Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Iskandar Yakubov
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | | | - Elmira Tokhtaeva
- VA Greater Los Angeles Healthcare System, Los Angeles, California
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | - Olga Vagin
- VA Greater Los Angeles Healthcare System, Los Angeles, California
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | - Viola Oorschot
- University Medical Center Utrecht, Utrecht, the Netherlands
- Monash Micro Imaging, Monash University, Melbourne, Victoria, Australia
| | | | - Judith Blanz
- Biochemical Institute, Christian-Albrechts-University Kiel, Kiel, Germany
| | - David Dawson
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | | | - Markus M. Lerch
- Department of Medicine A, University Medicine, Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Julia Mayerle
- Department of Medicine A, University Medicine, Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Ilya Gukovsky
- VA Greater Los Angeles Healthcare System, Los Angeles, California
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | - Anna S. Gukovskaya
- VA Greater Los Angeles Healthcare System, Los Angeles, California
- David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
- Correspondence Address correspondence to: Anna S. Gukovskaya, PhD, Pancreatic Research Group, West Los Angeles VA Healthcare Center, 11301 Wilshire Boulevard, Building 258, Room 340, Los Angeles, California 90073. fax: 310-268-4981.
| |
Collapse
|
34
|
Qiao Z, Yuan J, Shen J, Wang C, He Z, Hu Y, Zhang M, Xu C. Effect of thalidomide in combination with gemcitabine on human pancreatic carcinoma SW-1990 cell lines in vitro and in vivo. Oncol Lett 2015; 9:2353-2360. [PMID: 26137070 DOI: 10.3892/ol.2015.3064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 03/02/2015] [Indexed: 01/08/2023] Open
Abstract
Pancreatic cancer is one of the most frequently occurring malignancies worldwide and it is the fourth most common cause of cancer-associated mortality in Western countries. Thalidomide (THD) plays an important role in tumor therapy, as it is able to promote early stage apoptosis and inhibit the process of angiogenesis. The present study evaluated the ability of the combination of THD and gemcitabine (GEM) to inhibit the growth of the pancreatic cancer SW-1990 cell line in vitro and in vivo. Early apoptosis in the SW-1990 cells was detected by the Annexin V/propidium iodide double staining method, the level of B-cell lymphoma 2 (Bcl-2) and Bcl-2-associated X protein (Bax) were detected by reverse transcription-polymerase chain reaction (RT-PCR) and western blot analysis. In addition, the expression of vascular endothelial growth factor in transplanted tumor tissue was measured by RT-PCR, immunohistochemistry and western blot analysis. Cluster of differentiation 34 positivity was considered to indicate the microvessel density. Subsequent to treatment with THD and GEM alone or in combination, it was found that the expression of Bax was upregulated, while the expression of Bcl-2 was downregulated, and the growth of SW-1990 cells and transplanted tumors in nude mice was evidently inhibited. The administration of THD in combination with GEM may demonstrate a potent antitumor effect that increases with increasing dose. The mechanism behind the antitumor effect may be associated with the inhibition of tumor angiogenesis and induction of the apoptosis pathway.
Collapse
Affiliation(s)
- Zhenguo Qiao
- Department of Gastroenterology, Affiliated Wujiang Hospital of Nantong University, Suzhou, Jiangsu 215200, P.R. China
| | - Jigang Yuan
- Department of Gastroenterology, Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
| | - Jiaqing Shen
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Chao Wang
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Zhilong He
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Yijia Hu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Muxing Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Chunfang Xu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| |
Collapse
|
35
|
Xing M, Ni JB, Wan R, Tang MC, Hu YL, Yu G, Yin GJ, Chen CY, Fan YT, Xiao WQ, Zhao Y, Wang XP, Hu GY. Tetraspanin CD9 is involved in pancreatic damage during caerulein-induced acute pancreatitis in mice. J Dig Dis 2015; 16:43-51. [PMID: 25323957 DOI: 10.1111/1751-2980.12204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Pancreatic acinar cell necrosis and subsequent inflammatory response aggravate acute pancreatitis (AP). Tetraspanin CD9 has been reported to mediate inflammatory signaling by regulating molecular organization at the cell surface. This study aimed to investigate the role of CD9 in caerulein-induced AP (CIP) in mice. METHODS The expression of CD9 was detected in CIP in mice in vivo and cholecystokinin (CCK)/recombinant mouse tumor necrosis factor (rmTNF)-α induced pancreatic acinar cell death in vitro by quantitative real-time polymerase chain reaction, Western blot and immunofluorescence. The roles of CD9 in pancreatic acinar cell death and inflammatory response were further studied through the deletion of CD9 expression using small interfering RNA (siRNA). RESULTS CD9 was markedly upregulated in pancreatic tissues in mice during the early onset of CIP and was located mainly at the pancreatic acinar cell surface, which was associated with pancreatic damage. Additionally, incubation with CCK or rmTNF-α directly increased the expression of CD9 in isolated mice pancreatic acinar cells in vitro. The deletion of CD9 expression partially reversed both pancreatic acinar cell death induced by CCK and mRNA levels of proinflammatory cytokines produced by damaged acinar cells. CONCLUSION These results indicate that increased CD9 expression may be involved in pancreatic injury, possibly via the promotion of cytokine expressions in CIP in mice.
Collapse
Affiliation(s)
- Miao Xing
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Vlachos S, Tsaroucha AK, Konstantoudakis G, Papachristou F, Trypsianis G, Schizas D, Vaos G, Simopoulos C. Serum profiles of M30, M65 and interleukin-17 compared with C-reactive protein in patients with mild and severe acute pancreatitis. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2014; 21:911-8. [PMID: 25214429 DOI: 10.1002/jhbp.162] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Several studies state that a test of severity early in the course of acute pancreatitis is still needed. In this prospective study, an assay of the biomarkers M30 and M65 as well as of interleukin 17 (IL-17) is investigated. METHODS One hundred and fifty patients and 70 controls were evaluated. The prognostic value of M30, M65 and their ratio M30/M65 is assessed by ELISA. The same method is used for the study of IL-17. RESULTS At 24 h after symptom onset, the concentrations of M30 and M65 as well as their ratio, differed significantly in severe compared to mild disease (P = 0.016). C-reactive protein (CRP) was significantly higher (P < 0.001) in severe pancreatitis on the same day. The sensitivity of M65 to show severe acute pancreatitis at 24 h was 100% for values above the cut-off point of 428.15 U/l. The sensitivity of CRP was 100% as well. Concerning IL-17, its concentrations were higher in patients than in the control group (P < 0.001) in the first 24 h. CONCLUSIONS Plasma concentrations of M65 and the M30/M65 ratio can be useful in predicting the severity of acute pancreatitis as early as 24 h after the onset of symptoms. The rates of IL-17 early in the course of acute pancreatitis are indicative of the disease.
Collapse
Affiliation(s)
- Sotirios Vlachos
- Second Department of Surgery, Medical School, Democritus University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, 68100, Greece; Postgraduate Program in Hepatobiliary/Pancreatic Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Feng D, Wang Y, Wang H, Weng H, Kong X, Martin-Murphy BV, Li Y, Park O, Dooley S, Ju C, Gao B. Acute and chronic effects of IL-22 on acetaminophen-induced liver injury. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2014; 193:2512-8. [PMID: 25063867 PMCID: PMC4135042 DOI: 10.4049/jimmunol.1400588] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Acetaminophen (APAP)-induced liver injury (AILI) accounts for half of the acute liver failure cases in the United States. A better understanding of the underlying mechanisms of AILI is necessary for the development of novel antidotes. We found that pretreatment with IL-22 protected mice from APAP-mediated hepatotoxicity. The protection was dependent on STAT3, as IL-22 failed to reduce APAP hepatotoxicity in liver-specific STAT3 knockout mice. In contrast to the acute exposure to IL-22, the endogenous chronic overexpression of IL-22 in IL-22 transgenic (TG) mice or IL-22 adenovirus treatment for 6 wk resulted in a markedly increased susceptibility to AILI. Furthermore, the hepatic expression levels of cytochrome 2E1 (Cyp2E1) and Cyp1A2 were much higher in IL-22TG mice. Ablation of Cyp2E1 but not hepatic STAT3 abolished AILI and protein-adduct formation in IL-22TG mice. Finally, hepatic expression of HNF-1α, a transcriptional factor that is known to control Cyp2E1 expression, was elevated in IL-22TG mice compared with wild-type mice. Upregulation of hepatic Cyp2E1 was only observed in mice with constitutive overexpression of IL-22 but not with short-term treatment with one dose of IL-22 or multiple doses of IL-22 for 2 wk. In conclusion, short-term acute IL-22 exposure protects mice against AILI through STAT3 activation; however, chronic constitutive overexpression of IL-22 exacerbates AILI by increasing Cyp2E1 and toxic reactive APAP metabolite production. These findings may not only enhance our understanding of the effects of chronic inflammation on AILI in patients with liver disease, but are also helpful to identify novel therapeutic targets for the treatment of AILI.
Collapse
Affiliation(s)
- Dechun Feng
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892
| | - Yan Wang
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892
| | - Hua Wang
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892
| | - Honglei Weng
- Medical Clinic, Faculty of Medicine at Mannheim, University of Heidelberg, Mannheim 68167, Germany
| | - Xiaoni Kong
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China; Med-X Research Institute, Shanghai Jiao Tong University, Shanghai 200030, China; and
| | - Brittany V Martin-Murphy
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Yongmei Li
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892
| | - Ogyi Park
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892
| | - Steven Dooley
- Medical Clinic, Faculty of Medicine at Mannheim, University of Heidelberg, Mannheim 68167, Germany
| | - Cynthia Ju
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892;
| |
Collapse
|
38
|
Liu Y, Yuan J, Tan T, Jia W, Lugea A, Mareninova O, Waldron RT, Pandol SJ. Genetic inhibition of protein kinase Cε attenuates necrosis in experimental pancreatitis. Am J Physiol Gastrointest Liver Physiol 2014; 307:G550-63. [PMID: 25035113 PMCID: PMC4154116 DOI: 10.1152/ajpgi.00432.2013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Understanding the regulation of death pathways, necrosis and apoptosis, in pancreatitis is important for developing therapies directed to the molecular pathogenesis of the disease. Protein kinase Cε (PKCε) has been previously shown to regulate inflammatory responses and zymogen activation in pancreatitis. Furthermore, we demonstrated that ethanol specifically activated PKCε in pancreatic acinar cells and that PKCε mediated the sensitizing effects of ethanol on inflammatory response in pancreatitis. Here we investigated the role of PKCε in the regulation of death pathways in pancreatitis. We found that genetic deletion of PKCε resulted in decreased necrosis and severity in the in vivo cerulein-induced pancreatitis and that inhibition of PKCε protected the acinar cells from CCK-8 hyperstimulation-induced necrosis and ATP reduction. These findings were associated with upregulation of mitochondrial Bak and Bcl-2/Bcl-xL, proapoptotic and prosurvival members in the Bcl-2 family, respectively, as well as increased mitochondrial cytochrome c release, caspase activation, and apoptosis in pancreatitis in PKCε knockout mice. We further confirmed that cerulein pancreatitis induced a dramatic mitochondrial translocation of PKCε, suggesting that PKCε regulated necrosis in pancreatitis via mechanisms involving mitochondria. Finally, we showed that PKCε deletion downregulated inhibitors of apoptosis proteins, c-IAP2, survivin, and c-FLIPs while promoting cleavage/inactivation of receptor-interacting protein kinase (RIP). Taken together, our findings provide evidence that PKCε activation during pancreatitis promotes necrosis through mechanisms involving mitochondrial proapoptotic and prosurvival Bcl-2 family proteins and upregulation of nonmitochondrial pathways that inhibit caspase activation and RIP cleavage/inactivation. Thus PKCε is a potential target for prevention and/or treatment of acute pancreatitis.
Collapse
Affiliation(s)
- Yannan Liu
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California; ,2Beijing Hospital, Beijing, China,
| | - Jingzhen Yuan
- Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California;
| | - Tanya Tan
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California; ,3St. George's University School of Medicine, St. George's, Grenada; and
| | - Wenzhuo Jia
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California; ,2Beijing Hospital, Beijing, China,
| | - Aurelia Lugea
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California; ,4Cedars-Sinai Medical Center, Los Angeles, California
| | - Olga Mareninova
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California;
| | - Richard T. Waldron
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California; ,4Cedars-Sinai Medical Center, Los Angeles, California
| | - Stephen J. Pandol
- 1Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles, and South California Research Center for Alcoholic Liver and Pancreatic Diseases, California; ,4Cedars-Sinai Medical Center, Los Angeles, California
| |
Collapse
|
39
|
Chaiqinchengqi decoction regulates necrosis-apoptosis via regulating the release of mitochondrial cytochrome c and caspase-3 in rats with acute necrotizing pancreatitis. J TRADIT CHIN MED 2014; 34:178-83. [DOI: 10.1016/s0254-6272(14)60075-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
40
|
Kumar RN, Kumar KN, Salini K, Devaraj SN. Morin accelerates proliferative inhibition via NF-κB mediated transcriptional regulation of apoptotic events during chemical carcinogen induced mammary cancer in rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bionut.2014.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
41
|
Recent advances in the investigation of pancreatic inflammation induced by large doses of basic amino acids in rodents. J Transl Med 2014; 94:138-49. [PMID: 24365745 DOI: 10.1038/labinvest.2013.143] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 11/13/2013] [Accepted: 11/19/2013] [Indexed: 12/16/2022] Open
Abstract
It has been known for approximately 30 years that large doses of the semi-essential basic amino acid L-arginine induce severe pancreatic inflammation in rats. Recently, it has been demonstrated that L-arginine can also induce pancreatitis in mice. Moreover, other basic amino acids like L-ornithine and L-lysine can cause exocrine pancreatic damage without affecting the endocrine parenchyma and the ducts in rats. The utilization of these noninvasive severe basic amino acid-induced pancreatitis models is becoming increasingly popular and appreciated as these models nicely reproduce most laboratory and morphological features of human pancreatitis. Consequently, the investigation of basic amino acid-induced pancreatitis may offer us a better understanding of the pathogenesis and possible treatment options of the human disease.
Collapse
|
42
|
Weber H, Jonas L, Wakileh M, Krüger B. Beneficial effect of the bioflavonoid quercetin on cholecystokinin-induced mitochondrial dysfunction in isolated rat pancreatic acinar cells. Can J Physiol Pharmacol 2013; 92:215-25. [PMID: 24593786 DOI: 10.1139/cjpp-2013-0112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The pathogenesis of acute pancreatitis (AP) is still poorly understood. Thus, a reliable pharmacological therapy is currently lacking. In recent years, an impairment of the energy metabolism of pancreatic acinar cells, caused by Ca(2+)-mediated depolarization of the inner mitochondrial membrane and a decreased ATP supply, has been implicated as an important pathological event. In this study, we investigated whether quercetin exerts protection against mitochondrial dysfunction. Following treatment with or without quercetin, rat pancreatic acinar cells were stimulated with supramaximal cholecystokinin-8 (CCK). CCK caused a decrease in the mitochondrial membrane potential (MMP) and ATP concentration, whereas the mitochondrial dehydrogenase activity was significantly increased. Quercetin treatment before CCK application exerted no protection on MMP but increased ATP to a normal level, leading to a continuous decrease in the dehydrogenase activity. The protective effect of quercetin on mitochondrial function was accompanied by a reduction in CCK-induced changes to the cell membrane. Concerning the molecular mechanism underlying the protective effect of quercetin, an increased AMP/ATP ratio suggests that the AMP-activated protein kinase system may be activated. In addition, quercetin strongly inhibited CCK-induced trypsin activity. The results indicate that the use of quercetin may be a therapeutic strategy for reducing the severity of AP.
Collapse
Affiliation(s)
- Heike Weber
- a Institute of Clinical Chemistry and Laboratory Medicine, University of Rostock, Ernst-Heydemann-Straße 6, 18057 Rostock, Germany
| | | | | | | |
Collapse
|
43
|
Xu C, Wu A, Zhu H, Fang H, Xu L, Ye J, Shen J. Melatonin is involved in the apoptosis and necrosis of pancreatic cancer cell line SW-1990 via modulating of Bcl-2/Bax balance. Biomed Pharmacother 2013; 67:133-9. [DOI: 10.1016/j.biopha.2012.10.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 10/23/2012] [Indexed: 10/27/2022] Open
|
44
|
SHALBUEVA NATALIA, MARENINOVA OLGAA, GERLOFF ANDREAS, YUAN JINGZHEN, WALDRON RICHARDT, PANDOL STEPHENJ, GUKOVSKAYA ANNAS. Effects of oxidative alcohol metabolism on the mitochondrial permeability transition pore and necrosis in a mouse model of alcoholic pancreatitis. Gastroenterology 2013; 144:437-446.e6. [PMID: 23103769 PMCID: PMC3841074 DOI: 10.1053/j.gastro.2012.10.037] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 09/24/2012] [Accepted: 10/17/2012] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Opening of the mitochondrial permeability transition pore (MPTP) causes loss of the mitochondrial membrane potential (ΔΨm) and, ultimately, adenosine triphosphate depletion and necrosis. Cells deficient in cyclophilin D (CypD), a component of the MPTP, are resistant to MPTP opening, loss of ΔΨm, and necrosis. Alcohol abuse is a major risk factor for pancreatitis and is believed to sensitize the pancreas to stressors, by poorly understood mechanisms. We investigated the effects of ethanol on the pancreatic MPTP, the mechanisms of these effects, and their role in pancreatitis. METHODS We measured ΔΨm in mouse pancreatic acinar cells incubated with ethanol alone and in combination with physiologic and pathologic concentrations of cholecystokinin-8 (CCK). To examine the role of MPTP, we used ex vivo and in vivo models of pancreatitis, induced in wild-type and CypD(-/-) mice by a combination of ethanol and CCK. RESULTS Ethanol reduced basal ΔΨm and converted a transient depolarization, induced by physiologic concentrations of CCK, into a sustained decrease in ΔΨm, resulting in reduced cellular adenosine triphosphate and increased necrosis. The effects of ethanol and CCK were mediated by MPTP because they were not observed in CypD(-/-) acinar cells. Ethanol and CCK activated MPTP through different mechanisms-ethanol by reducing the ratio of oxidized nicotinamide adenine dinucleotide to reduced nicotinamide adenine dinucleotide, as a result of oxidative metabolism, and CCK by increasing cytosolic Ca(2+). CypD(-/-) mice developed a less-severe form of pancreatitis after administration of ethanol and CCK. CONCLUSIONS Oxidative metabolism of ethanol sensitizes pancreatic mitochondria to activate MPTP, leading to mitochondrial failure; this makes the pancreas susceptible to necrotizing pancreatitis.
Collapse
Affiliation(s)
- NATALIA SHALBUEVA
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California,Institute of General and Experimental Biology, Russian Academy of Sciences, Siberian Branch, Ulan-Ude, Russian Federation
| | - OLGA A. MARENINOVA
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California
| | - ANDREAS GERLOFF
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California
| | - JINGZHEN YUAN
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California
| | - RICHARD T. WALDRON
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California
| | - STEPHEN J. PANDOL
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California
| | - ANNA S. GUKOVSKAYA
- Veterans Affairs Greater Los Angeles Healthcare System, David Geffen School of Medicine, University of California at Los Angeles, Southern California Research Center for Alcoholic Liver and Pancreatic Disease and Cirrhosis, Los Angeles, California
| |
Collapse
|
45
|
Maléth J, Rakonczay Z, Venglovecz V, Dolman NJ, Hegyi P. Central role of mitochondrial injury in the pathogenesis of acute pancreatitis. Acta Physiol (Oxf) 2013; 207:226-35. [PMID: 23167280 DOI: 10.1111/apha.12037] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 10/26/2012] [Accepted: 10/30/2012] [Indexed: 12/11/2022]
Abstract
Acute pancreatitis is an inflammatory disease with no specific treatment. One of the main reasons behind the lack of specific therapy is that the pathogenesis of acute pancreatitis is poorly understood. During the development of acute pancreatitis, the disease-inducing factors can damage both cell types of the exocrine pancreas, namely the acinar and ductal cells. Because damage of either of the cell types can contribute to the inflammation, it is crucial to find common intracellular mechanisms that can be targeted by pharmacological therapies. Despite the many differences, recent studies revealed that the most common factors that induce pancreatitis cause mitochondrial damage with the consequent breakdown of bioenergetics, that is, ATP depletion in both cell types. In this review, we summarize our knowledge of mitochondrial function and damage within both pancreatic acinar and ductal cells. We also suggest that colloidal ATP delivery systems for pancreatic energy supply may be able to protect acinar and ductal cells from cellular damage in the early phase of the disease. An effective energy delivery system combined with the prevention of further mitochondrial damage may, for the first time, open up the possibility of pharmacological therapy for acute pancreatitis, leading to reduced disease severity and mortality.
Collapse
Affiliation(s)
- J. Maléth
- First Department of Medicine; University of Szeged; Szeged; Hungary
| | - Z. Rakonczay
- First Department of Medicine; University of Szeged; Szeged; Hungary
| | - V. Venglovecz
- Department of Pharmacology and Pharmacotherapy; University of Szeged; Szeged; Hungary
| | - N. J. Dolman
- Molecular Probes Labelling and Detection Technologies; Life Technologies Corporation; Eugene; OR; USA
| | - P. Hegyi
- First Department of Medicine; University of Szeged; Szeged; Hungary
| |
Collapse
|
46
|
GUKOVSKY ILYA, GUKOVSKAYA ANNA. Nuclear factor-κB in pancreatitis: Jack-of-all-trades, but which one is more important? Gastroenterology 2013; 144:26-9. [PMID: 23164573 PMCID: PMC6663071 DOI: 10.1053/j.gastro.2012.11.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
See “Deletion of IκBα activates RelA to reduce acute pancreatitis in mice through up-regulation of Spi2A,” by Neuhöfer P, Liang S, Einwächter H, et al, on page 192; and “Activation of nuclear factor-κB in acinar cells increases the severity of pancreatitis in mice,” by Huang H, Liu Y, Daniluk J, et al, on page 202.
Collapse
|
47
|
Frick TW. The role of calcium in acute pancreatitis. Surgery 2012; 152:S157-63. [PMID: 22906890 DOI: 10.1016/j.surg.2012.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 05/11/2012] [Indexed: 02/06/2023]
Abstract
Until recently, it was unclear whether calcium is more than a bystander in the development of acute pancreatitis. Now important evidence has been accumulated supporting a pivotal role of intracellular levels of calcium in the early pathogenesis of the disease. A sustained increase of cytosolic calcium concentrations, as observed in various models of acute pancreatitis, was identified as sabotaging crucial cellular defense mechanisms and initiating premature trypsinogen activation. These processes lead the acinar cell to necrosis, with spillage of activated proteases into the interstitial space, affecting surrounding acinar cells and initiating a vicious circle that ends in macroscopic acute pancreatitis and systemic inflammatory response syndrome. Comprehensive knowledge of the pathobiology of cytosolic calcium in the pancreatic acinar cell is leading to the understanding of coherent molecular pathways of early events in the pathogenesis of acute pancreatitis and is opening horizons for research into directly targeted therapeutic agents.
Collapse
Affiliation(s)
- Thomas W Frick
- Department of Surgery, University of Zürich, Wilhofstrasse, Zollikerberg, Switzerland.
| |
Collapse
|
48
|
Park AM, Kudo M, Hagiwara S, Tabuchi M, Watanabe T, Munakata H, Sakurai T. p38MAPK suppresses chronic pancreatitis by regulating HSP27 and BAD expression. Free Radic Biol Med 2012; 52:2284-91. [PMID: 22549003 DOI: 10.1016/j.freeradbiomed.2012.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Revised: 02/29/2012] [Accepted: 03/06/2012] [Indexed: 12/28/2022]
Abstract
Mitogen-activated protein kinases (MAPKs) are ubiquitous proteins that function in both normal and stress-related pathophysiological states of the cell. This study aimed to analyze the importance of p38MAPK in pancreatic injury using WBN/Kob rats with spontaneous chronic pancreatitis. Male WBN/Kob rats were injected with the p38MAPK inhibitor SB203580, starting at the age of 4 weeks, and sacrificed 6 weeks later. Compared with vehicle-treated rats, p38 inhibitor-treated rats exhibited a significant increase in pancreatic cell death and inflammation as assessed by histologic examination and myeloperoxidase activity, respectively. p38 inhibition decreased the expression of heat shock protein 27 (HSP27), an antioxidant protein, and enhanced accumulation of reactive oxygen species (ROS). In addition, the proapoptotic protein BAD was increased in the pancreas of rats treated with p38 inhibitor. In a pancreatic cell line (PANC-1), HSP27 knockdown augmented reactive oxygen species accumulation and cell death induced by tumor necrosis factor-α plus actinomycin D. In conclusion, p38MAPK suppresses chronic pancreatitis by upregulating HSP27 expression and downregulating BAD expression.
Collapse
Affiliation(s)
- Ah-Mee Park
- Department of Biochemistry, Kinki University, Faculty of Medicine, Osaka 589-8511, Japan
| | | | | | | | | | | | | |
Collapse
|
49
|
Long-lasting effect of infant rats endotoxemia on heat shock protein 60 in the pancreatic acinar cells: involvement of toll-like receptor 4. Int J Inflam 2012; 2012:354904. [PMID: 22685683 PMCID: PMC3364569 DOI: 10.1155/2012/354904] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/10/2012] [Accepted: 03/14/2012] [Indexed: 01/22/2023] Open
Abstract
Introduction. Lipopolysaccharide endotoxin (LPS) is responsible for septic shock and multiorgan failure, but pretreatment of rats with low doses of LPS reduced pancreatic acute damage. Aim. We investigated the effects of the endotoxemia induced in the early period of life on Toll-like receptor 4 (TLR4), heat shock protein 60 (HSP60) and proapoptotic Bax, caspase-9 and -3 or antiapoptotic Bcl-2 protein expression in the pancreatic acinar cells of adult animals. Material and Methods. Newborn rats (25 g) were injected with endotoxin (Escherichia coli) for 5 consecutive days. Two months later, pancreatic acinar cells were isolated from all groups of animals and subjected to caerulein stimulation (10−8 M). Protein expression was assessed employing Western blot. For detection of apoptosis we have employed DNA fragmentation ladder assay. Results. Preconditioning of newborn rats with LPS increased TLR4, Caspase-9 and -3 levels, but failed to affect basal expression of HSP60, Bax, and Bcl-2. Subsequent caerulein stimulation increased TLR4, Bcl-2, and caspases, but diminished HSP60 and Bax proteins in pancreatic acinar cells. Endotoxemia dose-dependently increased TLR4, Bax, HSP60, and both caspases protein signals in the pancreatic acini, further inhibiting antiapoptotic Bcl-2. Conclusions. Endotoxemia promoted the induction of HSP60 via TLR4 in the infant rats and participated in the LPS-dependent pancreatic tissue protection against acute damage.
Collapse
|
50
|
Yuan J, Liu Y, Tan T, Guha S, Gukovsky I, Gukovskaya A, Pandol SJ. Protein kinase d regulates cell death pathways in experimental pancreatitis. Front Physiol 2012; 3:60. [PMID: 22470346 PMCID: PMC3313474 DOI: 10.3389/fphys.2012.00060] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 02/29/2012] [Indexed: 11/13/2022] Open
Abstract
Inflammation and acinar cell necrosis are two major pathological responses of acute pancreatitis, a serious disorder with no current therapies directed to its molecular pathogenesis. Serine/threonine protein kinase D family, which includes PKD/PKD1, PKD2, and PKD3, has been increasingly implicated in the regulation of multiple physiological and pathophysiological effects. We recently reported that PKD/PKD1, the predominant PKD isoform expressed in rat pancreatic acinar cells, mediates early events of pancreatitis including NF-κB activation and inappropriate intracellular digestive enzyme activation. In current studies, we investigated the role and mechanisms of PKD/PKD1 in the regulation of necrosis in pancreatic acinar cells by using two novel small molecule PKD inhibitors CID755673 and CRT0066101 and molecular approaches in in vitro and in vivo experimental models of acute pancreatitis. Our results demonstrated that both CID755673 and CRT0066101 are PKD-specific inhibitors and that PKD/PKD1 inhibition by either the chemical inhibitors or specific PKD/PKD1 siRNAs attenuated necrosis while promoting apoptosis induced by pathological doses of cholecystokinin-octapeptide (CCK) in pancreatic acinar cells. Conversely, up-regulation of PKD expression in pancreatic acinar cells increased necrosis and decreased apoptosis. We further showed that PKD/PKD1 regulated several key cell death signals including inhibitors of apoptotic proteins, caspases, receptor-interacting protein kinase 1 to promote necrosis. PKD/PKD1 inhibition by CID755673 significantly ameliorated necrosis and severity of pancreatitis in an in vivo experimental model of acute pancreatitis. Thus, our studies indicate that PKD/PKD1 is a key mediator of necrosis in acute pancreatitis and that PKD/PKD1 may represent a potential therapeutic target in acute pancreatitis.
Collapse
Affiliation(s)
- Jingzhen Yuan
- South California Research Center for Alcoholic Liver and Pancreatic Diseases, Veterans Affairs Greater Los Angeles Healthcare System, University of California at Los Angeles Los Angeles, CA, USA
| | | | | | | | | | | | | |
Collapse
|