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Chen M, Pan L, Chen D, Wu Y, Ye J, Li K, Zhang N, Xu J. PAK1 Promotes Inflammation Induced by Sepsis through the Snail/CXCL2 Signaling Pathway. ACS Infect Dis 2024; 10:1370-1378. [PMID: 38503263 DOI: 10.1021/acsinfecdis.4c00052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Sepsis is a severe syndrome characterized by organ dysfunction, resulting from a systemic imbalance in response to infection. PAK1 plays a critical role in various diseases. The present study aimed to explore and delineate the mechanism of PAK1 in inflammation induced by sepsis. Bioinformatics analysis was performed to assess PAK1, snail, and CXCL2 expression in the whole blood of septic patients and the pathways enriched with PAK1. To simulate the sepsis model, THP-1 cells were stimulated with lipopolysaccharide. Gene expression was evaluated using qRT-PCR, while cell viability was assessed using CCK-8 assay. Cell apoptosis was tested with flow cytometry. Expression of inflammatory factors in cells following different treatments was analyzed using the enzyme linked immunosorbent assay (ELISA). Dual-luciferase and chromatin immunoprecipitation assays were conducted to verify the binding relationship between PAK1 and the snail. Mouse models of cecal ligation and puncture were established, and hematoxylin and eosin staining and ELISA were employed to detect the infiltration levels of inflammatory cells and the expression of related protective factors in lung, liver, and kidney tissues. The results demonstrated upregulation of PAK1, snail, and CXCL2 in the whole blood of septic patients, with PAK1 being enriched in the chemokine-related pathway. Knockdown of PAK1 significantly promoted the apoptosis of LPS-stimulated THP-1 cells and inhibited the expression of inflammatory factors. PAK1 upregulated the expression of the snail, which in turn promoted the expression of CXCL2. Thus, PAK1 mediated the sepsis-induced inflammatory response through the snail/CXCL2 pathway. In conclusion, PAK1 played a role in promoting inflammation induced by sepsis through the snail/CXCL2 axis, thereby providing a potential therapeutic target for the management of sepsis.
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Affiliation(s)
- Miaomiao Chen
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Liuhua Pan
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Deyuan Chen
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Yueming Wu
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Jianping Ye
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Ke Li
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Ning Zhang
- Department of Emergency Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
| | - Junlong Xu
- Department of Critical Care Medicine, The Six Affiliated Hospital of Wenzhou Medical University, Lishui 323000, China
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2
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Munoz M, Solis C, McCann M, Park J, Rafael-Clyke K, Chowdhury SAK, Jiang Y, Rosas PC. P21-activated kinase-1 signaling is required to preserve adipose tissue homeostasis and cardiac function. Mol Cell Biochem 2024:10.1007/s11010-024-04968-4. [PMID: 38430300 PMCID: PMC11371416 DOI: 10.1007/s11010-024-04968-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 02/13/2024] [Indexed: 03/03/2024]
Abstract
While P21-activated kinase-1 (PAK1) has been extensively studied in relation to cardiovascular health and glucose metabolism, its roles within adipose tissue and cardiometabolic diseases are less understood. In this study, we explored the effects of PAK1 deletion on energy balance, adipose tissue homeostasis, and cardiac function utilizing a whole-body PAK1 knockout (PAK1-/-) mouse model. Our findings revealed that body weight differences between PAK1-/- and WT mice emerged at 9 weeks of age, with further increases observed at 12 weeks. Furthermore, PAK1-/- mice displayed increased fat mass and decreased lean mass at 12 weeks, indicating a shift towards adiposity. In conjunction with the increased body weight, PAK1-/- mice had increased food intake and reduced energy expenditure. At a mechanistic level, PAK1 deletion boosted the expression of lipogenic markers while diminishing thermogenic markers expression in adipose tissues, contributing to reduced energy expenditure and the overall obesogenic phenotype. Moreover, our findings highlighted a significant impact on cardiac function following PAK1 deletion, including alterations in calcium kinetics and compromised systolic and lusitropy functions. In summary, our study emphasizes the significant role of PAK1 in weight regulation and cardiac function, enriching our comprehension of heart health and metabolism. These findings could potentially facilitate the identification of novel therapeutic targets in cardiometabolic diseases.
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Affiliation(s)
- Marcos Munoz
- Divison of Endocrinology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Christopher Solis
- Department of Health, Nutrition & Food Sciences, Florida State University, Tallahassee, FL, USA
| | - Maximilian McCann
- Department of Ophthalmology & Visual Sciences, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Jooman Park
- Department of Physiology & Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Koreena Rafael-Clyke
- Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Shamim A K Chowdhury
- Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Yuwei Jiang
- Department of Physiology & Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Paola C Rosas
- Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA.
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3
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Pyo JS, Min KW, Oh IH, Lim DH, Son BK. Clinicopathological significance and the associated signaling pathway of p21-activated kinase 1 (PAK1) in colorectal cancer. Pathol Res Pract 2023; 251:154820. [PMID: 37801909 DOI: 10.1016/j.prp.2023.154820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 10/08/2023]
Abstract
The aim of this study was to evaluate the clinicopathological significance and associated signaling pathways of p21-activated kinase 1 (PAK1) in colorectal cancer (CRC). PAK1 immunohistochemical expression was investigated in 246 human CRC tissues to evaluate its clinicopathological significance and prognostic role. Correlations between PAK1 and the immunoscore, HIF-1α, and pFOXO1 were also evaluated. PAK1 was expressed in 169 of 246 CRC tissues (68.7%). PAK1 expression significantly correlated with the metastatic lymph node ratio (P = 0.023). However, PAK1 expression did not correlate with tumor size, tumor location, tumor differentiation, lymphovascular and perineural invasion, or distant metastasis. PAK1 expression was significantly higher in CRC with a low immunoscore than in CRC with a high immunoscore (P = 0.017). In addition, there were significant correlations between PAK1, HIF-1α, and pFOXO1 expression (P = 0.001 and P = 0.024, respectively). Patients with PAK1 expression had worse overall and recurrence-free survival than those without PAK1 expression (P 0.001 and P = 0.001, respectively). PAK1 expression was significantly correlated with worse prognosis in CRCs patients. In addition, PAK1 expression was significantly correlated with a low immunoscore and high expression of HIF-1α and pFOXO1 in CRCs.
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Affiliation(s)
- Jung-Soo Pyo
- Department of Pathology, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Kyueng-Whan Min
- Department of Pathology, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Il Hwan Oh
- Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Dae Hyun Lim
- Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Byoung Kwan Son
- Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea.
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Dobrigna M, Poëa-Guyon S, Rousseau V, Vincent A, Toutain A, Barnier JV. The molecular basis of p21-activated kinase-associated neurodevelopmental disorders: From genotype to phenotype. Front Neurosci 2023; 17:1123784. [PMID: 36937657 PMCID: PMC10017488 DOI: 10.3389/fnins.2023.1123784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 02/13/2023] [Indexed: 03/06/2023] Open
Abstract
Although the identification of numerous genes involved in neurodevelopmental disorders (NDDs) has reshaped our understanding of their etiology, there are still major obstacles in the way of developing therapeutic solutions for intellectual disability (ID) and other NDDs. These include extensive clinical and genetic heterogeneity, rarity of recurrent pathogenic variants, and comorbidity with other psychiatric traits. Moreover, a large intragenic mutational landscape is at play in some NDDs, leading to a broad range of clinical symptoms. Such diversity of symptoms is due to the different effects DNA variations have on protein functions and their impacts on downstream biological processes. The type of functional alterations, such as loss or gain of function, and interference with signaling pathways, has yet to be correlated with clinical symptoms for most genes. This review aims at discussing our current understanding of how the molecular changes of group I p21-activated kinases (PAK1, 2 and 3), which are essential actors of brain development and function; contribute to a broad clinical spectrum of NDDs. Identifying differences in PAK structure, regulation and spatio-temporal expression may help understanding the specific functions of each group I PAK. Deciphering how each variation type affects these parameters will help uncover the mechanisms underlying mutation pathogenicity. This is a prerequisite for the development of personalized therapeutic approaches.
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Affiliation(s)
- Manon Dobrigna
- Institut des Neurosciences Paris-Saclay, UMR 9197, CNRS, Université Paris-Saclay, Saclay, France
| | - Sandrine Poëa-Guyon
- Institut des Neurosciences Paris-Saclay, UMR 9197, CNRS, Université Paris-Saclay, Saclay, France
| | - Véronique Rousseau
- Institut des Neurosciences Paris-Saclay, UMR 9197, CNRS, Université Paris-Saclay, Saclay, France
| | - Aline Vincent
- Department of Genetics, EA7450 BioTARGen, University Hospital of Caen, Caen, France
| | - Annick Toutain
- Department of Genetics, University Hospital of Tours, UMR 1253, iBrain, Université de Tours, INSERM, Tours, France
| | - Jean-Vianney Barnier
- Institut des Neurosciences Paris-Saclay, UMR 9197, CNRS, Université Paris-Saclay, Saclay, France
- *Correspondence: Jean-Vianney Barnier,
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Baumgartner M, Zirnbauer R, Schlager S, Mertens D, Gasche N, Sladek B, Herbold C, Bochkareva O, Emelianenko V, Vogelsang H, Lang M, Klotz A, Moik B, Makristathis A, Berry D, Dabsch S, Khare V, Gasche C. Atypical enteropathogenic E. coli are associated with disease activity in ulcerative colitis. Gut Microbes 2022; 14:2143218. [PMID: 36415023 PMCID: PMC9704410 DOI: 10.1080/19490976.2022.2143218] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
With increasing urbanization and industrialization, the prevalence of inflammatory bowel diseases (IBDs) has steadily been rising over the past two decades. IBD involves flares of gastrointestinal (GI) inflammation accompanied by microbiota perturbations. However, microbial mechanisms that trigger such flares remain elusive. Here, we analyzed the association of the emerging pathogen atypical enteropathogenic E. coli (aEPEC) with IBD disease activity. The presence of diarrheagenic E. coli was assessed in stool samples from 630 IBD patients and 234 age- and sex-matched controls without GI symptoms. Microbiota was analyzed with 16S ribosomal RNA gene amplicon sequencing, and 57 clinical aEPEC isolates were subjected to whole-genome sequencing and in vitro pathogenicity experiments including biofilm formation, epithelial barrier function and the ability to induce pro-inflammatory signaling. The presence of aEPEC correlated with laboratory, clinical and endoscopic disease activity in ulcerative colitis (UC), as well as microbiota dysbiosis. In vitro, aEPEC strains induce epithelial p21-activated kinases, disrupt the epithelial barrier and display potent biofilm formation. The effector proteins espV and espG2 distinguish aEPEC cultured from UC and Crohn's disease patients, respectively. EspV-positive aEPEC harbor more virulence factors and have a higher pro-inflammatory potential, which is counteracted by 5-ASA. aEPEC may tip a fragile immune-microbiota homeostasis and thereby contribute to flares in UC. aEPEC isolates from UC patients display properties to disrupt the epithelial barrier and to induce pro-inflammatory signaling in vitro.
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Affiliation(s)
- Maximilian Baumgartner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Rebecca Zirnbauer
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, Austria
| | - Sabine Schlager
- National Reference Laboratory for Escherichia coli, Austrian Agency for Health and Food Safety, Graz, Austria
| | - Daniel Mertens
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | | | | | - Craig Herbold
- Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria
| | - Olga Bochkareva
- Institute of Science and Technology Austria, Klosterneuburg, Austria
| | - Vera Emelianenko
- Institute of Science and Technology Austria, Klosterneuburg, Austria
| | - Harald Vogelsang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Michaela Lang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria,Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria
| | - Anton Klotz
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Birgit Moik
- National Reference Laboratory for Escherichia coli, Austrian Agency for Health and Food Safety, Graz, Austria
| | - Athanasios Makristathis
- Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria,Division of Microbiology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - David Berry
- Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria,Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria
| | - Stefanie Dabsch
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Vineeta Khare
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Christoph Gasche
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria,CONTACT Christoph Gasche Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, A-1090Austria
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6
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Inhibition effect of PPAR-γ signaling on mast cell-mediated allergic inflammation through down-regulation of PAK1/ NF-κB activation. Int Immunopharmacol 2022; 108:108692. [DOI: 10.1016/j.intimp.2022.108692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/17/2022] [Accepted: 03/07/2022] [Indexed: 12/14/2022]
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7
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Consumption of oils and anthocyanins may positively modulate PPAR-γ expression in chronic non-communicable diseases: a systematic review. Nutr Res 2022; 105:66-76. [DOI: 10.1016/j.nutres.2022.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 11/22/2022]
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8
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Li Z, Wu K, Zou Y, Gong W, Wang P, Wang H. PREX1 depletion ameliorates high-fat diet-induced non-alcoholic fatty liver disease in mice and mitigates palmitic acid-induced hepatocellular injury via suppressing the NF-κB signaling pathway. Toxicol Appl Pharmacol 2022; 448:116074. [PMID: 35605788 DOI: 10.1016/j.taap.2022.116074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/30/2022] [Accepted: 05/17/2022] [Indexed: 01/07/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver diseases worldwide. Oxidative stress has been considered a key factor in the pathogenesis of NAFLD. Phosphatidylinositol (3,4,5)-trisphosphate-dependent Rac exchanger 1 (PREX1), a guanine nucleotide exchange factor for Rac, has been associated with inflammation and oxidative stress. This study aimed to investigate the biological function of PREX1 in the progression of NAFLD. Male C57BL/6 mice were fed a high-fat diet for 12 weeks to induce NAFLD in vivo. Adeno-associated virus type 8-mediated liver-specific PREX1 depletion was employed to investigate the role of PREX1 in the progression of high-fat diet-induced NAFLD. Murine hepatocyte cell line AML-12 was stimulated with palmitic acid for 24 h to induce steatosis in vitro. PREX1 depletion was carried out by transfection with PREX1 small interfering RNA. Results showed that PREX1 depletion exerted protective effects against lipid accumulation, oxidative stress and inflammation and inhibited activation of the nuclear factor-κB (NF-κB) signaling pathway in vivo and in vitro. Subsequently, NF-κB inhibitor BAY11-7082 was applied to investigate the role of the NF-κB signaling pathway in the protective effect of PREX1 inhibition against NAFLD. We confirmed that PREX1 inhibition mitigated palmitic acid-induced hepatocellular inflammation mainly via the NF-κB signaling pathway and lipid accumulation and oxidative stress at least partly via the NF-κB signaling pathway. This study highlights the biological function of PREX1 in the pathogenesis of NAFLD.
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Affiliation(s)
- Zeyu Li
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kanglin Wu
- Department of Emergency Internal Medicine, The First Affiliated Hospital of Henan University of CM, Zhengzhou, China
| | - Yi Zou
- Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Wei Gong
- Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Peng Wang
- Department of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Hong Wang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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PAK1 Silencing Attenuated Proinflammatory Macrophage Activation and Foam Cell Formation by Increasing PPAR γ Expression. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6957900. [PMID: 34603600 PMCID: PMC8483905 DOI: 10.1155/2021/6957900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/28/2021] [Indexed: 12/24/2022]
Abstract
Macrophage polarization in response to environmental cues has emerged as an important event in the development of atherosclerosis. Compelling evidences suggest that P21-activated kinases 1 (PAK1) is involved in a wide variety of diseases. However, the potential role and mechanism of PAK1 in regulation of macrophage polarization remains to be elucidated. Here, we observed that PAK1 showed a dramatically increased expression in M1 macrophages but decreased expression in M2 macrophages by using a well-established in vitro model to study heterogeneity of macrophage polarization. Adenovirus-mediated loss-of-function approach demonstrated that PAK1 silencing induced an M2 macrophage phenotype-associated gene profiles but repressed the phenotypic markers related to M1 macrophage polarization. Additionally, dramatically decreased foam cell formation was found in PAK1 silencing-induced M2 macrophage activation which was accompanied with alternation of marker account for cholesterol efflux or influx from macrophage foam cells. Moderate results in lipid metabolism and foam cell formation were found in M1 macrophage activation mediated by AdshPAK1. Importantly, we presented mechanistic evidence that PAK1 knockdown promoted the expression of PPARγ, and the effect of macrophage activation regulated by PAK1 silencing was largely reversed when a PPARγ antagonist was utilized. Collectively, these findings reveal that PAK1 is an independent effector of macrophage polarization at least partially attributed to regulation of PPARγ expression, which suggested PAK1-PPARγ axis as a novel therapeutic strategy in atherosclerosis management.
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10
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Wang J, Guo X, Chen C, Sun S, Liu G, Liu M, Hao M, Che H. Gender differences in food allergy depend on the PPAR γ/NF-κB in the intestines of mice. Life Sci 2021; 278:119606. [PMID: 33974930 DOI: 10.1016/j.lfs.2021.119606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 01/26/2023]
Abstract
AIMS Epidemiology shows that gender affects the incidence of food allergy. However, there is a lack of evidence of gender differences in food allergies and little is known about the mechanisms. The aim of this study was to excavate potential reasons for gender differences in food allergy based on estrogen. MAIN METHODS Female and male BALB/c mice sensitized with ovalbumin (OVA) were established to analyze the difference in food allergy. The systemic anaphylactic, including OVA-specific IgE, OVA-specific IgG, histamine, and cytokines, was assessed using an enzyme-linked immunosorbent assay (ELISA). ELISA also detected the estradiol in serum. Western blotting and immunofluorescence were used to detect the estrogen receptor. Peroxisome proliferator-activated receptor gamma (PPARγ) implicated in immune homeostasis and nuclear factor kappa-B (NF-κB) were determined by western blotting. Immunohistochemistry and hematoxylin-eosin (H&E) staining were used to detect zonula occludens-1 (ZO-1), tryptase, forkhead box protein P3 (Foxp3), and intestinal morphology, respectively. KEY FINDINGS Female mice were more vulnerable to food allergy. Female mice treated with OVA did exhibit more serious systemic anaphylaxis than male mice. We observed increased levels of estradiol in serum, estrogen receptor, NF-κB, and decreased levels of PPAR γ in female mice. Furthermore, the intestinal mucosal integrity and intestinal permeability were more impaired in female mice treated with OVA than male mice. SIGNIFICANCE Clarify the mechanism of gender differences in food allergies can provide targets in female mice and provide personalized diagnosis, management, and treatment of food allergy for female mice.
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Affiliation(s)
- Junjuan Wang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Xiaoya Guo
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Cheng Chen
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Shanfeng Sun
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Guirong Liu
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Manman Liu
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Mengzhen Hao
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Huilian Che
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
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11
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Romano R, Calcagnile M, Margiotta A, Franci L, Chiariello M, Alifano P, Bucci C. RAB7A Regulates Vimentin Phosphorylation through AKT and PAK. Cancers (Basel) 2021; 13:cancers13092220. [PMID: 34066419 PMCID: PMC8125308 DOI: 10.3390/cancers13092220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 12/21/2022] Open
Abstract
Simple Summary RAB7A (RAs-related in Brain 7A) is a master regulator of intracellular traffic controlling transport to late endosomes and lysosomes, two organelles of the endocytic pathway important for degradation. Thanks to this function, RAB7A is also involved in cellular processes linked to cancer, such as apoptosis, cytoskeletal reorganization, and cell migration. Therefore, the interest in the role of RAB7A in cancer progression is increasing. Previously, we demonstrated that RAB7A regulates phosphorylation and assembly of vimentin, a cytoskeletal intermediate filament protein, which is also an important mesenchymal marker of cancer cells. The aim of the present study is the identification of the kinases responsible for vimentin phosphorylation whose activity is affected by the modulation of RAB7A expression. We found that RAB7A is able to regulate AKT (also called protein kinase B or PKB) and PAK1 (P21-Activated Kinase 1) and several of their downstream effectors, which control proliferation, apoptosis, survival, migration, and invasion. These data suggest that RAB7A could have a key role in cancer development. Abstract RAB7A is a small GTPase that controls the late endocytic pathway but also cell migration through RAC1 (Ras-related C3 botulinum toxin substrate 1) and vimentin. In fact, RAB7A regulates vimentin phosphorylation at different sites and vimentin assembly, and, in this study, we identified vimentin domains interacting with RAB7A. As several kinases could be responsible for vimentin phosphorylation, we investigated whether modulation of RAB7A expression affects the activity of these kinases. We discovered that RAB7A regulates AKT and PAK1, and we demonstrated that increased vimentin phosphorylation at Ser38 (Serine 38), observed upon RAB7A overexpression, is due to AKT activity. As AKT and PAK1 are key regulators of several cellular events, we investigated if RAB7A could have a role in these processes by modulating AKT and PAK1 activity. We found that RAB7A protein levels affected beta-catenin and caspase 9 expression. We also observed the downregulation of cofilin-1 and decreased matrix metalloproteinase 2 (MMP2) activity upon RAB7A silencing. Altogether these results demonstrate that RAB7A regulates AKT and PAK1 kinases, affecting their downstream effectors and the processes they regulate, suggesting that RAB7A could have a role in a number of cancer hallmarks.
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Affiliation(s)
- Roberta Romano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (R.R.); (M.C.); (A.M.); (P.A.)
| | - Matteo Calcagnile
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (R.R.); (M.C.); (A.M.); (P.A.)
| | - Azzurra Margiotta
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (R.R.); (M.C.); (A.M.); (P.A.)
| | - Lorenzo Franci
- Istituto di Fisiologia Clinica (IFC), Consiglio Nazionale delle Ricerche (CNR), 53100 Siena, Italy; (L.F.); (M.C.)
- Core Research Laboratory (CRL), Istituto per lo Studio, La Prevenzione e la Rete Oncologica (ISPRO), 53100 Siena, Italy
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Mario Chiariello
- Istituto di Fisiologia Clinica (IFC), Consiglio Nazionale delle Ricerche (CNR), 53100 Siena, Italy; (L.F.); (M.C.)
- Core Research Laboratory (CRL), Istituto per lo Studio, La Prevenzione e la Rete Oncologica (ISPRO), 53100 Siena, Italy
| | - Pietro Alifano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (R.R.); (M.C.); (A.M.); (P.A.)
| | - Cecilia Bucci
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (R.R.); (M.C.); (A.M.); (P.A.)
- Correspondence: ; Tel.: +39-0832-298900
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12
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Up-regulation of P21-activated kinase 1 in osteoarthritis chondrocytes is responsible for osteoarthritic cartilage destruction. Biosci Rep 2021; 40:221716. [PMID: 31868209 PMCID: PMC6954364 DOI: 10.1042/bsr20191017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 11/19/2019] [Accepted: 12/19/2019] [Indexed: 02/06/2023] Open
Abstract
Osteoarthritis is mainly caused by a degenerative joint disorder, which is characterized by the gradual degradation of articular cartilage and synovial inflammation. The chondrocyte, the unique resident cell type of articular cartilage, is crucial for the development of osteoarthritis. Previous studies revealed that P21-activated kinase-1 (PAK1) was responsible for the initiation of inflammation. The purpose of the present study was to determine the potential role of PAK1 in osteoarthritis. The level of PAK1 expression was measured by Western blot and quantitative real-time PCR in articular cartilage from osteoarthritis model rats and patients with osteoarthritis. In addition, the functional role of aberrant PAK1 expression was detected in the chondrocytes. We found that the expression of PAK1 was significantly increased in chondrocytes treated with osteoarthritis-related factors. Increased expression of PAK1 was also observed in knee articular cartilage samples from patients with osteoarthritis and osteoarthritis model rats. PAK1 was found to inhibit chondrocytes proliferation and to promote the production of inflammatory cytokines in cartilages chondrocytes. Furthermore, we found that PAK1 modulated the production of extracellular matrix and cartilage degrading enzymes in chondrocytes. Results of the present studies demonstrated that PAK1 might play an important role in the pathogenesis of osteoarthritis.
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13
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Batra A, Warren CM, Ke Y, McCann M, Halas M, Capote AE, Liew CW, Solaro RJ, Rosas PC. Deletion of P21-activated kinase-1 induces age-dependent increased visceral adiposity and cardiac dysfunction in female mice. Mol Cell Biochem 2021; 476:1337-1349. [PMID: 33389497 PMCID: PMC7925422 DOI: 10.1007/s11010-020-03993-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/16/2020] [Indexed: 12/12/2022]
Abstract
It is known that there is an age-related progression in diastolic dysfunction, especially prevalent in postmenopausal women, who develop heart failure with preserved ejection fraction (HFpEF, EF > 50%). Mechanisms and therapies are poorly understood, but there are strong correlations between obesity and HFpEF. We have tested the hypothesis that P21-activated kinase-1 (PAK1) preserves cardiac function and adipose tissue homeostasis during aging in female mice. Previous demonstrations in male mice by our lab that PAK1 activity confers cardio-protection against different stresses formed the rationale for this hypothesis. Our studies compared young (3-6 months) and middle-aged (12-15 months) female and male PAK1 knock-out mice (PAK1-/-) and wild-type (WT) equivalent. Female WT mice exhibited increased cardiac PAK1 abundance during aging. By echocardiography, compared to young WT female mice, middle-aged WT female mice showed enlargement of the left atrium as well as thickening of posterior wall and increased left ventricular mass; however, all contraction and relaxation parameters were preserved during aging. Compared to WT controls, middle-aged PAK1-/- female mice demonstrated worsening of cardiac function involving a greater enlargement of the left atrium, ventricular hypertrophy, and diastolic dysfunction. Moreover, with aging PAK1-/- female mice, unlike male PAK1-/- mice, exhibited increased adiposity with increased accumulation of visceral adipose tissue. Our data provide evidence for the significance of PAK1 signaling as an element in the preservation of cardiac function and adipose tissue homeostasis in females during aging.
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Affiliation(s)
- Ashley Batra
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Chad M Warren
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Yunbo Ke
- Department of Anesthesiology, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Maximilian McCann
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Monika Halas
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Andrielle E Capote
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Chong Wee Liew
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - R John Solaro
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Paola C Rosas
- Department of Physiology & Biophysics, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA.
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14
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Caioni G, Viscido A, d’Angelo M, Panella G, Castelli V, Merola C, Frieri G, Latella G, Cimini A, Benedetti E. Inflammatory Bowel Disease: New Insights into the Interplay between Environmental Factors and PPARγ. Int J Mol Sci 2021; 22:985. [PMID: 33498177 PMCID: PMC7863964 DOI: 10.3390/ijms22030985] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/14/2021] [Accepted: 01/18/2021] [Indexed: 12/19/2022] Open
Abstract
The pathophysiological processes of inflammatory bowel diseases (IBDs), i.e., Crohn's disease (CD) and ulcerative colitis (UC), are still not completely understood. The exact etiology remains unknown, but it is well established that the pathogenesis of the inflammatory lesions is due to a dysregulation of the gut immune system resulting in over-production of pro-inflammatory cytokines. Increasing evidence underlines the involvement of both environmental and genetic factors. Regarding the environment, the microbiota seems to play a crucial role. Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors that exert pleiotropic effects on glucose homeostasis, lipid metabolism, inflammatory/immune processes, cell proliferation, and fibrosis. Furthermore, PPARs modulate interactions with several environmental factors, including microbiota. A significantly impaired PPARγ expression was observed in UC patients' colonic epithelial cells, suggesting that the disruption of PPARγ signaling may represent a critical step of the IBD pathogenesis. This paper will focus on the role of PPARγ in the interaction between environmental factors and IBD, and it will analyze the most suitable in vitro and in vivo models available to better study these relationships.
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Affiliation(s)
- Giulia Caioni
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
| | - Angelo Viscido
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
| | - Michele d’Angelo
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
| | - Gloria Panella
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100 Teramo, Italy;
| | - Vanessa Castelli
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
| | - Carmine Merola
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100 Teramo, Italy;
| | - Giuseppe Frieri
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
| | - Giovanni Latella
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
| | - Annamaria Cimini
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
- Sbarro Institute for Cancer Research and Molecular Medicine and Center for Biotechnology, Temple University, Philadelphia, PA 19122, USA
| | - Elisabetta Benedetti
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (A.V.); (M.d.); (G.P.); (V.C.); (G.F.); (G.L.); (A.C.)
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15
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Good M, Chu T, Shaw P, McClain L, Chamberlain A, Castro C, Rimer JM, Mihi B, Gong Q, Nolan LS, Cooksey K, Linneman L, Agrawal P, Finegold DN, Peters D. Global hypermethylation of intestinal epithelial cells is a hallmark feature of neonatal surgical necrotizing enterocolitis. Clin Epigenetics 2020; 12:190. [PMID: 33308304 PMCID: PMC7730811 DOI: 10.1186/s13148-020-00983-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Necrotizing enterocolitis (NEC) remains one of the overall leading causes of death in premature infants, and the pathogenesis is unpredictable and not well characterized. The aim of our study was to determine the molecular phenotype of NEC via transcriptomic and epithelial cell-specific epigenomic analysis, with a specific focus on DNA methylation. METHODS Using laser capture microdissection, epithelial cell-specific methylation signatures were characterized by whole-genome bisulfite sequencing of ileal and colonic samples at the time of surgery for NEC and after NEC had healed at reanastomosis (n = 40). RNA sequencing was also performed to determine the transcriptomic profile of these samples, and a comparison was made to the methylome data. RESULTS We found that surgical NEC has a considerable impact on the epigenome by broadly increasing DNA methylation levels, although these effects are less pronounced in genomic regions associated with the regulation of gene expression. Furthermore, NEC-related DNA methylation signatures were influenced by tissue of origin, with significant differences being noted between colon and ileum. We also identified numerous transcriptional changes in NEC and clear associations between gene expression and DNA methylation. CONCLUSIONS We have defined the intestinal epigenomic and transcriptomic signatures during surgical NEC, which will advance our understanding of disease pathogenesis and may enable the development of novel precision medicine approaches for NEC prediction, diagnosis and phenotyping.
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Affiliation(s)
- Misty Good
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA.
| | - Tianjiao Chu
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Patricia Shaw
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Lora McClain
- Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Austin Chamberlain
- Magee-Womens Research Institute, Pittsburgh, PA, USA
- PathGroup, Brentwood, TN, USA
| | - Carlos Castro
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Jamie M Rimer
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Belgacem Mihi
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Qingqing Gong
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Lila S Nolan
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Krista Cooksey
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Laura Linneman
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Pranjal Agrawal
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | | | - David Peters
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA, 15213, USA.
- Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA.
- Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA.
- Magee-Womens Research Institute, Pittsburgh, PA, USA.
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16
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Frick A, Khare V, Jimenez K, Dammann K, Lang M, Krnjic A, Gmainer C, Baumgartner M, Mesteri I, Gasche C. A Novel PAK1-Notch1 Axis Regulates Crypt Homeostasis in Intestinal Inflammation. Cell Mol Gastroenterol Hepatol 2020; 11:892-907.e1. [PMID: 33189893 PMCID: PMC7900837 DOI: 10.1016/j.jcmgh.2020.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS p21-activated kinase-1 (PAK1) belongs to a family of serine-threonine kinases and contributes to cellular pathways such as nuclear factor-κB (NF-κB), mitogen-activated protein kinase (MAPK), phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT), and Wingless-related integration site(Wnt)/β-catenin, all of which are involved in intestinal homeostasis. Overexpression of PAK1 is linked to inflammatory bowel disease as well as colitis-associated cancer (CAC), and similarly was observed in interleukin (IL)10 knockout (KO) mice, a model of colitis and CAC. Here, we tested the effects of PAK1 deletion on intestinal inflammation and carcinogenesis in IL10 KO mice. METHODS IL10/PAK1 double-knockout (DKO) mice were generated and development of colitis and CAC was analyzed. Large intestines were measured and prepared for histology or RNA isolation. Swiss rolls were stained with H&E and periodic acid-Schiff. Co-immunoprecipitation and immunofluorescence were performed using intestinal organoids, SW480, and normal human colon epithelial cells 1CT. RESULTS When compared with IL10 KO mice, DKOs showed longer colons and prolonged crypts, despite having higher inflammation and numbers of dysplasia. Crypt hyperproliferation was associated with Notch1 activation and diminished crypt differentiation, indicated by a reduction of goblet cells. Gene expression analysis indicated up-regulation of the Notch1 target hairy and enhancer of split-1 and the stem cell receptor leucin-rich repeat-containing G-protein-coupled receptor 5 in DKO mice. Interestingly, the stem cell marker olfactomedin-4 was present in colonic tissue. Increased β-catenin messenger RNA and cytoplasmic accumulation indicated aberrant Wnt signaling. Co-localization and direct interaction of Notch1 and PAK1 was found in colon epithelial cells. Notch1 activation abrogated this effect whereas silencing of PAK1 led to Notch1 activation. CONCLUSIONS PAK1 contributes to the regulation of crypt homeostasis under inflammatory conditions by controlling Notch1. This identifies a novel PAK1-Notch1 axis in intestinal pathophysiology of inflammatory bowel disease and CAC.
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Affiliation(s)
- Adrian Frick
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Vineeta Khare
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Kristine Jimenez
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Kyle Dammann
- Department of Surgery, Saint Luke's University Hospital Bethlehem, Bethlehem, Pennsylvania
| | - Michaela Lang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Anita Krnjic
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Christina Gmainer
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Maximilian Baumgartner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | | | - Christoph Gasche
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria.
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17
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Chang H, He KY, Li C, Ni YY, Li MN, Chen L, Hou M, Zhou Z, Xu ZP, Ji MJ. P21 activated kinase-1 (PAK1) in macrophages is required for promotion of Th17 cell response during helminth infection. J Cell Mol Med 2020; 24:14325-14338. [PMID: 33124146 PMCID: PMC7753984 DOI: 10.1111/jcmm.16050] [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: 04/20/2020] [Revised: 09/30/2020] [Accepted: 10/12/2020] [Indexed: 12/24/2022] Open
Abstract
CD4+T cells differentiate into distinct functional effector and inhibitory subsets are facilitated by distinct cytokine cues present at the time of antigen recognition. Maintaining a balance between T helper 17 (Th17) and regulatory T (Treg) cells are critical for the control of the immunopathogenesis of liver diseases. Here, by using the mouse model of helminth Schistosoma japonicum (Sjaponicum) infection, we show that the hepatic mRNA levels of P21‐activated kinase 1 (PAK1), a key regulator of the actin cytoskeleton, adhesion and cell motility, are significantly increased and associated with the development of liver pathology during Sjaponicum infection. In addition, PAK1‐deficient mice are prone to suppression of Th17 cell responses but increased Treg cells. Furthermore, PAK1 enhances macrophage activation through promoting IRF1 nuclear translocation in an NF‐κB‐dependent pathway, resulting in promoting Th17 cell differentiation through inducing IL‐6 production. These findings highlight the importance of PAK1 in macrophages fate determination and suggest that PAK1/IRF1 axis‐dependent immunomodulation can ameliorate certain T cell–based immune pathologies.
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Affiliation(s)
- Hao Chang
- Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Kai-Yue He
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Chen Li
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Yang-Yue Ni
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Mai-Ning Li
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Lin Chen
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Min Hou
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Zikai Zhou
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhi-Peng Xu
- Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Min-Jun Ji
- Center for Global Health, Nanjing Medical University, Nanjing, China.,Department of Pathogen Biology, Jiangsu Province Key Laboratory of Modern Pathogen Biology, Nanjing Medical University, Nanjing, China.,Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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18
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Fu L, Chen YH, Bo QL, Song YP, Ma L, Wang B, Xu S, Zhang C, Wang H, Xu DX. Lipopolysaccharide Downregulates 11β-Hydroxysteroid Dehydrogenase 2 Expression through Inhibiting Peroxisome Proliferator–Activated Receptor-γ in Placental Trophoblasts. THE JOURNAL OF IMMUNOLOGY 2019; 203:1198-1207. [DOI: 10.4049/jimmunol.1900132] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/24/2019] [Indexed: 12/17/2022]
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19
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Feng Y, Ma M, Zhang X, Liu D, Wang L, Qian C, Wei G, Zhu B. Characterization of small GTPase Rac1 and its interaction with PAK1 in crayfish Procambarus clarkii. FISH & SHELLFISH IMMUNOLOGY 2019; 87:178-183. [PMID: 30639478 DOI: 10.1016/j.fsi.2019.01.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/04/2019] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
Ras-related C3 botulinum toxin substrate 1 (Rac1) participates in many biological processes. In this study, a Rac1 gene was identified in the crayfish Procambarus clarkii with an open reading frame of 579 bp that encoded 192 amino acids. This predicted 21.4 kDa protein was highly homologous to those in other invertebrates. Real-time PCR analysis revealed that Pc-Rac1 was expressed in all examined tissues with the highest expression level in hemocytes. The transcriptional expression level of Pc-Rac1 was significantly upregulated in hemocytes and hepatopancreas after lipopolysaccharide (LPS) or polyinosinic: polycytidylic acid (poly I: C) induction. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and western blot analysis suggested that a recombinant Pc-Rac1 protein was successfully expressed in E. coli. Far-western blot analysis demonstrated that Rac1 can interact with the PBD domain of p21-activated kinase 1 (PAK1). RNA interference of Pc-Rac1 affected the mRNA expression levels of immune-related genes lectin, Toll, crustin, TNF, ALF and cactus. These results suggest that Pc-Rac1 is involved in the innate immune responses in P. clarkii.
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Affiliation(s)
- Yuanyuan Feng
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Maolin Ma
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Xiaojiao Zhang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Die Liu
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Lei Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Cen Qian
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Guoqing Wei
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Baojian Zhu
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
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20
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Linghu KG, Wu GP, Fu LY, Yang H, Li HZ, Chen Y, Yu H, Tao L, Shen XC. 1,8-Cineole Ameliorates LPS-Induced Vascular Endothelium Dysfunction in Mice via PPAR-γ Dependent Regulation of NF-κB. Front Pharmacol 2019; 10:178. [PMID: 30930772 PMCID: PMC6423908 DOI: 10.3389/fphar.2019.00178] [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: 11/12/2018] [Accepted: 02/11/2019] [Indexed: 12/16/2022] Open
Abstract
1,8-Cineole (eucalyptol), a monoterpene, has been widely reported for the anti-inflammatory effects. Our previous data confirmed that 1,8-cineole ameliorated the inflammatory phenotype of human umbilical vein endothelial cells (HUVECs) by mediating NF-κB expression in vitro. At present, we investigated the protection effects of 1,8-cineole on vascular endothelium in lipopolysaccharide (LPS)-induced acute inflammatory injury mice and the potential mechanisms involved in the protection in HUVECs. Results from enzyme linked immunosorbent assays revealed that 1,8-cineole suppressed the secretion of interleukin (IL)-6 and IL-8 and increased the expression of IL-10 in the serum of LPS-induced mice. 1,8-Cineole reduced the inflammatory infiltration and the expression of vascular cell adhesion molecular 1 (VCAM-1) in the sections of thoracic aorta in LPS-induced acute inflammatory mice. Western blotting indicated that 1,8-cineole significantly decreased the phosphorylation of NF-κB p65 and increased the expression of PPAR-γ in the thoracic aorta tissue. 1,8-Cineole increased the expression of PPAR-γ in LPS-induced HUVECs. 1,8-Cineole and rosiglitazone reduced the protein and mRNA levels of VCAM-1, E-selectin, IL-6, and IL-8 in LPS-induced HUVECs, which could be reversed by the action of GW9662 (inhibitor of PPAR-γ). 1,8-Cineole and rosiglitazone blocked the LPS-induced IκBα degradation and NF-κB p65 nucleus translocation, which could be reversed by the pretreatment of GW9662 or silence of PPAR-γ gene. In conclusion, 1,8-cineole attenuated LPS-induced vascular endothelial cells injury via PPAR-γ dependent modulation of NF-κB.
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Affiliation(s)
- Ke-Gang Linghu
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China.,Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macau, China
| | - Guo-Ping Wu
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Ling-Yun Fu
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Hong Yang
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Hai-Zhi Li
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Yan Chen
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China.,The Department of Pharmaceutics of TCM (the High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Hua Yu
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macau, China
| | - Ling Tao
- The Department of Pharmaceutics of TCM (the High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
| | - Xiang-Chun Shen
- The Department of Pharmacology of Materia Medica (the State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, China
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Weng MT, Tung CC, Chang YT, Leong YL, Wang YT, Wong JM, Wei SC. Trends of Medication Usage and Associated Outcomes for Taiwanese Patients with Inflammatory Bowel Disease from 2001 to 2015. J Clin Med 2018; 7:jcm7110394. [PMID: 30373275 PMCID: PMC6262469 DOI: 10.3390/jcm7110394] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND No nationwide, long-term follow-up study has assessed medication-associated outcomes for Asian patients with inflammatory bowel disease (IBD). This study examined medication-associated outcomes for Taiwanese patients with IBD. METHODS In this nationwide cohort study, 3806 patients who had received catastrophic illness registration for IBD from 2001 to 2015 were enrolled. RESULTS A higher accumulated dosage of 5-aminosalicylic acid (5-ASA) was associated with decreased risks of hospitalization (hazard ratio (HR) = 0.6) and operation (HR = 0.5). Thiopurine was associated with increased risks of hospitalization (HR = 2.1 in the high-dosage group) and tuberculosis (TB; HR = 3.6) reactivation but not with operation risk. A higher accumulated dosage of anti-TNF-α agents was associated with increased risks of hospitalization (HR = 3.3), operation (HR = 2.9), hepatitis B (HR = 4.3), and TB (HR = 5.1) reactivation. Corticosteroids were associated with increased risks of hospitalization (HR = 3.5 in the high-dosage group), risk of operation, hepatitis B (HR = 2.8) and TB (HR = 2.8) reactivation. CONCLUSIONS 5-ASA usage is associated with decreased risks of hospitalization and operation for patients with IBD, whereas thiopurine, corticosteroids, and anti-TNF-α agents are associated with increased risks of hospitalization and hepatitis B and TB reactivation.
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Affiliation(s)
- Meng-Tzu Weng
- Departments of Internal Medicine, National Taiwan University Hospital, Taipei 100, Taiwan.
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei 220, Taiwan.
- Department of Chemical Engineering & Materials Science, Yuan-Ze University, Taoyuan 320, Taiwan.
| | - Chien-Chih Tung
- Department of Integrated Diagnostics & Therapeutics, National Taiwan University Hospital, Taipei 100, Taiwan.
| | - Yuan-Ting Chang
- Health Data Research Center, National Taiwan University, Taipei 106, Taiwan.
| | - Yew-Loong Leong
- Department of Internal Medicine, West Garden Hospital, Taipei 108, Taiwan.
| | - Yu-Ting Wang
- Departments of Medical Research, National Taiwan University Hospital, Taipei 100, Taiwan.
| | - Jau-Min Wong
- Departments of Internal Medicine, National Taiwan University Hospital, Taipei 100, Taiwan.
| | - Shu-Chen Wei
- Departments of Internal Medicine, National Taiwan University Hospital, Taipei 100, Taiwan.
- Inflammatory Bowel Disease Clinical and Study Integrated Center, National Taiwan University Hospital, Taipei 100, Taiwan.
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Dammann K, Khare V, Coleman C, Berdel H, Gasche C. p-21 Activated Kinase as a Molecular Target for Chemoprevention in Diabetes. Geriatrics (Basel) 2018; 3:geriatrics3040073. [PMID: 31011108 PMCID: PMC6371191 DOI: 10.3390/geriatrics3040073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/12/2018] [Accepted: 10/16/2018] [Indexed: 12/26/2022] Open
Abstract
Hypothesis: Anti-diabetic drugs modulate p-21 activated kinase (PAK) signaling. Introduction: Type 2 diabetes mellitus (T2DM) is a chronic inflammatory disease associated with increased cancer risk. PAK signaling is implicated in cellular homeostasis when regulated, and cancer when unrestrained. Recent reports provided a role for PAK signaling in glucose homeostasis, but the role of PAKs in the pathogenesis of T2DM is unknown. Here, we performed a mini-meta-analysis to explore if anti-diabetic drugs modify PAK signaling pathways, and provide insight regarding modulation of these pathways, to potentially reduce diabetes-associated cancer risk. Methods: PAK interacting partners in T2DM were identified using the online STRING database. Correlation studies were performed via systematic literature review to understand the effect of anti-diabetic drugs on PAK signaling. A mini-meta-analysis correlated multiple clinical studies and revealed the overall clinical response rate and percentage of adverse events in piogliazone (n = 53) and metformin (n = 91) treated patients with PAK-associated diseases. Results: A total of 30 PAK interacting partners were identified (10: reduced beta-cell mass; 10: beta-cell dysfunction; 10: obesity-insulin resistance), which were highly associated with Wnt, and G-protein signaling. The anti-diabetic drug metformin activated signaling pathways upstream; whereas pioglitazone inhibited pathways downstream of PAK. Overall, clinical response upon pioglitazone treatment was 53%. Seventy-nine percent of pioglitazone and 75% of metformin treated patients had adverse events. Pioglitazone reduced molecular-PAK biomarkers of proliferation (Ki67 and CyclinD1), and metformin had the opposite effect. Conclusions: PAK signaling in T2DM likely involves Wnt and G-protein signaling, which may be altered by the anti-diabetic drugs metformin and pioglitazone. Apart from the therapeutic limitations of adverse events, pioglitazone may be promising in chemoprevention. However long-term multi-centered studies, which initiate pioglitazone treatment early will be required to fully assess the full potential of these drugs.
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Affiliation(s)
- Kyle Dammann
- Department of Clinical Medicine, Medical University of the Americas, Devens, MA 01434, USA.
| | - Vineeta Khare
- Department of Internal Medicine III, Medical University of Vienna, Vienna 1090, Austria.
| | - Clyde Coleman
- Department of Surgery, University of Kentucky HealthCare, Lexington, KY 40536, USA.
| | - Henrik Berdel
- Department of Acute Care and Trauma Surgery, University of Kentucky HealthCare, Lexington, KY 40536, USA.
| | - Christoph Gasche
- Department of Internal Medicine III, Medical University of Vienna, Vienna 1090, Austria.
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Dysregulated Up-Frameshift Protein 1 Promotes Ulcerative Colitis Pathogenesis Through the TNFR1-NF-κB/MAPKs Pathway. Dig Dis Sci 2018; 63:2593-2603. [PMID: 29959727 DOI: 10.1007/s10620-018-5171-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 06/13/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Ulcerative colitis (UC) is an idiopathic colonic mucosal disease, and its pathogenesis has not been fully understood. Up-frameshift protein 1 (UPF1) is a potential molecule for UC predicted by a computational approach. AIM The present study aimed to validate the underlying mechanism of UPF1 in UC. METHODS UPF1 expression was detected by qRT-PCR, western blotting, and immunohistochemistry in dextran sulfate sodium-induced colitis in mice. To simulate the intestinal inflammation microenvironment, NCM460 human colonic epithelial cells were exposed to a mixture of inflammatory mediators. The potential mechanism involving TNFR1-NF-κB/MAPKs pathway activation was addressed by western blotting, reporter gene assays, and siRNA (siUPF1) or UPF1-expressing plasmid pENTER-transfected cells. RESULTS UPF1 was downregulated in colonic epithelial cells of colitic mice, and in vitro, contrary to the mRNA levels of the associated cytokines enhanced in the UPF1 dysregulation group within stimulatory factors, most relevant cytokines were significantly decreased in UPF1 overexpression group. Mechanistically, the increased expression of tumor necrosis factor receptor 1 (TNFR1) was found in NCM460 cells pre-treated with siUPF1, with the activation of IKK/NF-κB and MAPKs pathways, including JNK/AP-1 and P38, but not the ERK1/2 pathway. Moreover, the repression of TNFR1 required the interaction of UPF1 with the promoter. CONCLUSION UPF1, which negatively regulated the transcription of TNFR1, is a novel factor regulating intestinal inflammation. The downregulation of UPF1 activated the TNFR1-dependent NF-κB/MAPKs pathway, and promoting inflammatory responses in colon might act as a causal role in UC.
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FGF8 induces therapy resistance in neoadjuvantly radiated rectal cancer. J Cancer Res Clin Oncol 2018; 145:77-86. [PMID: 30276721 PMCID: PMC6326005 DOI: 10.1007/s00432-018-2757-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/19/2018] [Indexed: 01/09/2023]
Abstract
Purpose Therapy response to neoadjuvant radiochemotherapy (nRCT) of locally advanced rectal cancer varies widely so that markers predicting response are urgently needed. Fibroblast growth factor (FGF) and FGF receptor (FGFR) signaling is involved in pro-survival signaling and thereby may result in radiation resistance. Methods In a cohort of 43 rectal cancer patients, who received nRCT, we analyzed protein levels of FGF 8 and its downstream target Survivin by immunohistochemistry to assess their impact on nRCT response. In vitro resistance models were created by exposing colorectal cancer cell lines to fractionated irradiation and selecting long-term survivors. Results Our findings revealed significantly higher FGF8 and Survivin staining scores in pre-treatment biopsies as well as in surgical specimens of non-responsive compared to responsive patients. Functional studies demonstrated dose-dependent induction of FGF8 mRNA expression in mismatch-incompetent DLD1 cells already after one dose of irradiation. Surviving clones after one or two series of radiation were more resistant to an additional radiation fraction than non-irradiated controls and showed a significant increase in expression of the FGF8 receptor FGFR3 and of Survivin on both the RNA and the protein levels. Conclusion The results of this study suggest that FGF8 and Survivin contribute to radiation resistance in rectal cancer and may serve as markers to select patients who may not benefit from neoadjuvant radiotherapy. Electronic supplementary material The online version of this article (10.1007/s00432-018-2757-7) contains supplementary material, which is available to authorized users.
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25
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Sun H, Kamanova J, Lara-Tejero M, Galán JE. Salmonella stimulates pro-inflammatory signalling through p21-activated kinases bypassing innate immune receptors. Nat Microbiol 2018; 3:1122-1130. [PMID: 30224799 PMCID: PMC6158040 DOI: 10.1038/s41564-018-0246-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 08/13/2018] [Indexed: 01/11/2023]
Abstract
Microbial infections are most often countered by inflammatory responses that are initiated through the recognition of conserved microbial products by innate immune receptors and result in pathogen expulsion1-6. However, inflammation can also lead to pathology. Tissues such as the intestinal epithelium, which are exposed to microbial products, are therefore subject to stringent negative regulatory mechanisms to prevent signalling through innate immune receptors6-11. This presents a challenge to the enteric pathogen Salmonella Typhimurium, which requires intestinal inflammation to compete against the resident microbiota and to acquire the nutrients and electron acceptors that sustain its replication12,13. We show here that S. Typhimurium stimulates pro-inflammatory signalling by a unique mechanism initiated by effector proteins that are delivered by its type III protein secretion system. These effectors activate Cdc42 and the p21-activated kinase 1 (PAK1) leading to the recruitment of TNF receptor-associated factor 6 (TRAF6) and mitogen-activated protein kinase kinase kinase 7 (TAK1), and the stimulation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) inflammatory signalling. The removal of Cdc42, PAK1, TRAF6 or TAK1 prevented S. Typhimurium from stimulating NF-κB signalling in cultured cells. In addition, oral administration of a highly specific PAK inhibitor blocked Salmonella-induced intestinal inflammation and bacterial replication in the mouse intestine, although it resulted in a significant increase in the bacterial loads in systemic tissues. Thus, S. Typhimurium stimulates inflammatory signalling in the intestinal tract by engaging critical downstream signalling components of innate immune receptors. These findings illustrate the unique balance that emerges from host-pathogen co-evolution, in that pathogen-initiated responses that help pathogen replication are also important to prevent pathogen spread to deeper tissues.
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Affiliation(s)
- Hui Sun
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Jana Kamanova
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Maria Lara-Tejero
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA
| | - Jorge E Galán
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT, USA.
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Wu X, Ji K, Wang H, Zhao Y, Jia J, Gao X, Zang B. Retracted
: microRNA‐542‐5p protects against acute lung injury in mice with severe acute pancreatitis by suppressing the mitogen‐activated protein kinase signaling pathway through the negative regulation of P21‐activated kinase 1. J Cell Biochem 2018; 120:290-304. [DOI: 10.1002/jcb.27356] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 06/22/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Xing‐Mao Wu
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
| | - Kai‐Qiang Ji
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
| | - Hai‐Yuan Wang
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
| | - Yang Zhao
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
| | - Jia Jia
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
| | - Xiao‐Peng Gao
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
| | - Bin Zang
- Intensive Care Unit Shengjing Hospital, China Medical University Shenyang China
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27
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Zhang S, Fu J, Dogan B, Scherl EJ, Simpson KW. 5-Aminosalicylic acid downregulates the growth and virulence of Escherichia coli associated with IBD and colorectal cancer, and upregulates host anti-inflammatory activity. J Antibiot (Tokyo) 2018; 71:950-961. [PMID: 30050110 DOI: 10.1038/s41429-018-0081-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 06/20/2018] [Accepted: 06/24/2018] [Indexed: 02/07/2023]
Abstract
5-aminosalicylate (5-ASA) is widely prescribed for the treatment of inflammatory bowel disease (IBD) and prevention of inflammation-associated colorectal cancer (CRC). Its clinical effect is widely attributed to modulation of host inflammatory responses. However, the recent association of intestinal dysbiosis and selective enrichment in Escherichia coli in patients with IBD and CRC raises the possibility that 5-ASA might also affect the enteric microflora. The aim of this study was to investigate the effect of 5-ASA on the growth and virulence of E. coli associated with IBD and CRC, and its impact on host cell inflammatory responses. Our results show that 5-ASA inhibited E. coli growth in a dose-dependent manner and downregulated the expression of bacterial virulence genes associated with IBD (fliC, fimH, ompC, yfgL, nlpL, lpfA, htrA, dsbA, fyuA, and chuA) and CRC (pks). 5-ASA inhibited E. coli motility (30-70%), epithelial adherence and invasion, and IL-8 secretion (p < 0.05). 5-ASA reduced E. coli survival in J774A.1 macrophages by 20 to 50% (p < 0.01) and TNF-α secretion by infected macrophages up to 30% (p < 0.05). In addition, 5-ASA reduced DNA damage in epithelial cells (Caco-2) induced by pks-positive E. coli. Our results reveal a multifaceted and previously unrecognized effect of 5-ASA on the growth and virulence of IBD- and CRC-associated E. coli, in addition to its inhibitory effect on host cell inflammatory responses. These results suggest that 5-ASA may abrogate the proinflammatory and oncogenic effects of E. coli in patients with IBD and CRC.
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Affiliation(s)
- Shiying Zhang
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Jing Fu
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.,Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Belgin Dogan
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Ellen J Scherl
- The Jill Roberts Center for Inflammatory Bowel Disease, Weill Cornell Medical College, 71st and York, New York, NY, USA
| | - Kenneth W Simpson
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
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Pérez-Yépez EA, Saldívar-Cerón HI, Villamar-Cruz O, Pérez-Plasencia C, Arias-Romero LE. p21 Activated kinase 1: Nuclear activity and its role during DNA damage repair. DNA Repair (Amst) 2018; 65:42-46. [PMID: 29597073 DOI: 10.1016/j.dnarep.2018.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 03/20/2018] [Indexed: 01/30/2023]
Abstract
p21-activated kinase 1 (PAK1) is a serine/threonine kinase activated by the small GTPases Rac1 and Cdc42. It is located in the chromosome 11q13 and is amplified and/or overexpressed in several human cancer types including 25-30% of breast tumors. This enzyme plays a pivotal role in the control of a number of fundamental cellular processes by phosphorylating its downstream substrates. In addition to its role in the cytoplasm, it is well documented that PAK1 also plays crucial roles in the nucleus participating in mitotic events and gene expression through its association and/or phosphorylation of several transcription factors, transcriptional co-regulators and cell cycle-related proteins, including Aurora kinase A (AURKA), polo-like kinase 1 (PLK1), the forkhead transcription factor (FKHR), estrogen receptor α (ERα), and Snail. More recently, PAK signaling has emerged as a component of the DNA damage response (DDR) as PAK1 activity influences the cellular sensitivity to ionizing radiation and promotes the expression of several genes involved in the Fanconi Anemia/BRCA pathway. This review will focus on the nuclear functions of PAK1 and its role in the regulation of DNA damage repair.
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Affiliation(s)
- Eloy Andrés Pérez-Yépez
- UBIMED, Facultad de Estudios Superiores-Iztacala, UNAM, Tlalnepantla, Estado de México 54090, Mexico; Department of Medicine, Division of Gastroenterology and Nutrition, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Héctor Iván Saldívar-Cerón
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado postal 14-740, 07360 México, D. F., México
| | - Olga Villamar-Cruz
- UBIMED, Facultad de Estudios Superiores-Iztacala, UNAM, Tlalnepantla, Estado de México 54090, Mexico
| | - Carlos Pérez-Plasencia
- UBIMED, Facultad de Estudios Superiores-Iztacala, UNAM, Tlalnepantla, Estado de México 54090, Mexico
| | - Luis Enrique Arias-Romero
- UBIMED, Facultad de Estudios Superiores-Iztacala, UNAM, Tlalnepantla, Estado de México 54090, Mexico.
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Frick A, Khare V, Paul G, Lang M, Ferk F, Knasmüller S, Beer A, Oberhuber G, Gasche C. Overt Increase of Oxidative Stress and DNA Damage in Murine and Human Colitis and Colitis-Associated Neoplasia. Mol Cancer Res 2018; 16:634-642. [PMID: 29378905 DOI: 10.1158/1541-7786.mcr-17-0451] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/17/2017] [Accepted: 01/02/2018] [Indexed: 11/16/2022]
Abstract
Patients with inflammatory bowel disease (IBD) have a higher risk of developing colitis-associated-cancer (CAC); however, the underlying processes of disease progression are not completely understood. Here, the molecular processes of inflammation-driven colon carcinogenesis were investigated using IL10-deficient mice (IL10 KO). IL10 KO mice were euthanized after development of colitis and dysplasia. IHC was performed for markers of colitis-induced DNA damage (CIDD): oxidative DNA lesions (8-oxoG), double-strand breaks (DSB; γH2AX). and DSB repair. MSI, LOH (Trp53, Apc), and global methylation (CIMP) were assessed on microdissected tissue. Comet assay for DNA damage, immunofluorescence, and immunoblotting were performed on intestinal organoids from wild-type (WT) and IL10 KO mice. Sequential biopsies and surgical specimens from IBD and CAC patients were used for IHC analysis. Severity of inflammation correlated with number of dysplasia. 8-oxoG and γH2AX-positive cells were significantly increased in inflamed and dysplastic areas along with activation of DSB repair. The amount of positively stained cells strongly correlated with degree of inflammation (8-oxoG: R = 0.923; γH2AX: R = 0.858). Neither CIMP, MSI nor LOH was observed. Enhanced DSBs in IL10 KO organoids were confirmed by comet assay and increased expression of γH2AX. Human clinical specimens exhibited significantly higher γH2AX and 8-oxoG in IBD, dysplasia, and CAC compared with normal mucosa. These data indicate that inflammation-driven colon carcinogenesis in IL10 KO mice and IBD patients is associated with oxidative DNA damage and overt presence of DSB. Mol Cancer Res; 16(4); 634-42. ©2018 AACR.
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Affiliation(s)
- Adrian Frick
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Vineeta Khare
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Gregor Paul
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Michaela Lang
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Franziska Ferk
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Siegfried Knasmüller
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Andrea Beer
- Clinical Institute of Pathology, Medical University of Vienna, Vienna Austria
| | - Georg Oberhuber
- Pathologie Soleiman, A.ö. Landeskrankenhaus-Universitäts-Kliniken Innsbruck, Innsbruck, Austria
| | - Christoph Gasche
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria.
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Civiero L, Greggio E. PAKs in the brain: Function and dysfunction. Biochim Biophys Acta Mol Basis Dis 2017; 1864:444-453. [PMID: 29129728 DOI: 10.1016/j.bbadis.2017.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/31/2017] [Accepted: 11/06/2017] [Indexed: 12/17/2022]
Abstract
p21-Activated kinases (PAKs) comprise a family of proteins covering a central role in signal transduction. They are downstream effectors of Rho GTPases and can affect a variety of processes in different cell types and tissues by remodeling the cytoskeleton and by promoting gene transcription and cell survival. Given the relevance of cytoskeletal organization in neuronal development as well as synaptic function and the importance of pro-survival signals in controlling neuronal cell fate, accumulating studies investigated the role of PAKs in the nervous system. In this review, we provide a critical overview of the role of PAKs in the nervous system, both in neuronal and non-neuronal cells, and discuss their potential link with neurodegenerative diseases.
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Huang M, Wang L, Zeng S, Qiu Q, Zou Y, Shi M, Xu H, Liang L. Indirubin inhibits the migration, invasion, and activation of fibroblast-like synoviocytes from rheumatoid arthritis patients. Inflamm Res 2017; 66:433-440. [PMID: 28265680 DOI: 10.1007/s00011-017-1027-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 12/25/2016] [Accepted: 02/11/2017] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVES To evaluate the inhibition of indirubin in FLSs migration, invasion, activation, and proliferation in RA FLSs. METHODS The levels of IL-6 and IL-8 in cultural supernatants were measured by ELISA. RA FLS migration and invasion in vitro were measured by the Boyden chamber method and the scratch assay. Signal transduction protein expression was measured by western blot. FLS proliferation was detected by Edu incorporation. F-actin was measured by immunofluorescence staining. RESULTS We found that indirubin reduced migration, invasion, inflammation, and proliferation in RA FLSs. In addition, we demonstrated that indirubin inhibited lamellipodium formation during cell migration. To gain insight into molecular mechanisms, we evaluated the effect of indirubin on PAK1 and MAPK activation. Our results indicated that indirubin inhibited the activity of PAK1 and MAPK. CONCLUSIONS Our observations suggest that indirubin may be protective against joint destruction in RA by regulating synoviocyte migration, invasion, activation, and proliferation.
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Affiliation(s)
- Mingcheng Huang
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Lihui Wang
- Department of Orthopedics, The People's Hospital of Nanhai District, Foshan, Guangdong, China
| | - Shan Zeng
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Qian Qiu
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Yaoyao Zou
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Maohua Shi
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Hanshi Xu
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Liuqin Liang
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, No. 58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China.
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Dun Y, Liu M, Chen J, Peng D, Zhao H, Zhou Z, Wang T, Liu C, Guo Y, Zhang C, Yuan D. Regulatory effects of saponins from Panax japonicus on colonic epithelial tight junctions in aging rats. J Ginseng Res 2016; 42:50-56. [PMID: 29348722 PMCID: PMC5766693 DOI: 10.1016/j.jgr.2016.12.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 10/27/2016] [Accepted: 12/20/2016] [Indexed: 12/24/2022] Open
Abstract
Background Saponins from Panax japonicus (SPJ) are the most abundant and main active components of P. japonicus, which replaces ginseng roots in treatment for many kinds of diseases in the minority ethnic group in China. Our previous studies have demonstrated that SPJ has the effects of anti-inflammation through the mitogen-activated protein kinase (MAPK) and nuclear factor kappa B (NF-κB) signaling pathways. The present study was designed to investigate whether SPJ can modulate intestinal tight junction barrier in aging rats and further to explore the potential mechanism. Methods Aging rats had been treated with different doses (10 mg/kg, 30 mg/kg, and 60 mg/kg) of SPJ for 6 mo since they were 18 mo old. After the rats were euthanized, the colonic samples were harvested. Levels of tight junctions (claudin-1 and occludin) were determined by immunohistochemical staining. Levels of proinflammatory cytokines (interleukin-1β and tumor necrosis factor-α) were examined by Western blot. NF-κB and phosphorylation of MAPK signaling pathways were also determined by Western blot. Results We found that SPJ increased the expression of the tight junction proteins claudin-1 and occludin in the colon of aging rats. Treatment with SPJ decreased the levels of interleukin-1β and tumor necrosis factor-α, reduced the phosphorylation of three MAPK isoforms, and inhibited the expression of NF-κB in the colon of aging rats. Conclusion The studies demonstrated that SPJ modulates the damage of intestinal epithelial tight junction in aging rats, inhibits inflammation, and downregulates the phosphorylation of the MAPK and NF-κB signaling pathways.
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Affiliation(s)
- Yaoyan Dun
- Medical College of China Three Gorges University, Yichang, China
| | - Min Liu
- Medical College of China Three Gorges University, Yichang, China
| | - Jing Chen
- Medical College of China Three Gorges University, Yichang, China
| | - Danli Peng
- Medical College of China Three Gorges University, Yichang, China
| | - Haixia Zhao
- Medical College of China Three Gorges University, Yichang, China
| | - Zhiyong Zhou
- Medical College of China Three Gorges University, Yichang, China
| | - Ting Wang
- Medical College of China Three Gorges University, Yichang, China
| | - Chaoqi Liu
- Medical College of China Three Gorges University, Yichang, China
| | - Yuhui Guo
- Medical College of China Three Gorges University, Yichang, China
| | - Changcheng Zhang
- Medical College of China Three Gorges University, Yichang, China
| | - Ding Yuan
- Renhe Hospital of China Three Gorges University, Yichang, China
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Gan J, Ke X, Jiang J, Dong H, Yao Z, Lin Y, Lin W, Wu X, Yan S, Zhuang Y, Chu WK, Cai R, Zhang X, Cheung HS, Block NL, Pang CP, Schally AV, Zhang H. Growth hormone-releasing hormone receptor antagonists inhibit human gastric cancer through downregulation of PAK1-STAT3/NF-κB signaling. Proc Natl Acad Sci U S A 2016; 113:14745-14750. [PMID: 27930339 PMCID: PMC5187693 DOI: 10.1073/pnas.1618582114] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Gastric cancer (GC) ranks as the fourth most frequent in incidence and second in mortality among all cancers worldwide. The development of effective treatment approaches is an urgent requirement. Growth hormone-releasing hormone (GHRH) and GHRH receptor (GHRH-R) have been found to be present in a variety of tumoral tissues and cell lines. Therefore the inhibition of GHRH-R was proposed as a promising approach for the treatment of these cancers. However, little is known about GHRH-R and the relevant therapy in human GC. By survival analyses of multiple cohorts of GC patients, we identified that increased GHRH-R in tumor specimens correlates with poor survival and is an independent predictor of patient prognosis. We next showed that MIA-602, a highly potent GHRH-R antagonist, effectively inhibited GC growth in cultured cells. Further, this inhibitory effect was verified in multiple models of human GC cell lines xenografted into nude mice. Mechanistically, GHRH-R antagonists target GHRH-R and down-regulate the p21-activated kinase 1 (PAK1)-mediated signal transducer and activator of transcription 3 (STAT3)/nuclear factor-κB (NF-κB) inflammatory pathway. Overall, our studies establish GHRH-R as a potential molecular target in human GC and suggest treatment with GHRH-R antagonist as a promising therapeutic intervention for this cancer.
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Affiliation(s)
- Jinfeng Gan
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Xiurong Ke
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Jiali Jiang
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Hongmei Dong
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Zhimeng Yao
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Yusheng Lin
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Wan Lin
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China
| | - Xiao Wu
- Tumor Tissue Bank, Affiliated Cancer Hospital of Shantou University Medical College, Shantou 515041, China
| | - Shumei Yan
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Yixuan Zhuang
- Tumor Tissue Bank, Affiliated Cancer Hospital of Shantou University Medical College, Shantou 515041, China
| | - Wai Kit Chu
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Renzhi Cai
- Endocrine, Polypeptide, and Cancer Institute, Veterans Affairs Medical Center, Miami, FL 33125
- South Florida Veterans Affairs Foundation for Research and Education, Miami, FL 33125
- Division of Hematology and Oncology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136
- Division of Endocrinology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136
- Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136
| | - Xianyang Zhang
- Endocrine, Polypeptide, and Cancer Institute, Veterans Affairs Medical Center, Miami, FL 33125
- South Florida Veterans Affairs Foundation for Research and Education, Miami, FL 33125
- Division of Hematology and Oncology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136
- Division of Endocrinology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136
- Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136
| | - Herman S Cheung
- Endocrine, Polypeptide, and Cancer Institute, Veterans Affairs Medical Center, Miami, FL 33125
- South Florida Veterans Affairs Foundation for Research and Education, Miami, FL 33125
- Department of Biomedical Engineering, University of Miami, Coral Gables, FL 33146
| | - Norman L Block
- Department of Pathology, Miller School of Medicine, University of Miami, Miami, FL 33136
| | - Chi Pui Pang
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
- Joint Shantou International Eye Center, Shantou University and The Chinese University of Hong Kong, Shantou 515041, China
| | - Andrew V Schally
- Endocrine, Polypeptide, and Cancer Institute, Veterans Affairs Medical Center, Miami, FL 33125;
- South Florida Veterans Affairs Foundation for Research and Education, Miami, FL 33125
- Division of Hematology and Oncology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136
- Division of Endocrinology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136
- Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136
- Department of Pathology, Miller School of Medicine, University of Miami, Miami, FL 33136
| | - Hao Zhang
- Cancer Research Center, Shantou University Medical College, Shantou 515041, China;
- Tumor Tissue Bank, Affiliated Cancer Hospital of Shantou University Medical College, Shantou 515041, China
- Department of Biotherapy, Affiliated Cancer Hospital of Shantou University Medical College, Shantou 515041, China
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Song L, Wang F, Dong Z, Hua X, Xia Q. Label-free quantitative phosphoproteomic profiling of cellular response induced by an insect cytokine paralytic peptide. J Proteomics 2016; 154:49-58. [PMID: 27903465 DOI: 10.1016/j.jprot.2016.11.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 11/18/2016] [Accepted: 11/21/2016] [Indexed: 12/18/2022]
Abstract
Paralytic peptide (PP) participates in diverse physiological processes as an insect cytokine, such as immunity control, paralysis induction, regulation of cell morphology and proliferation. To investigate the molecular mechanism underlying those physiological activities, we systematically investigated the global phosphorylation events in fat body of silkworm larvae induced by PP through label-free quantitative phosphoproteomics. 2534 phosphosites were finally identified, of which the phosphorylation level of 620 phosphosites on 244 proteins was significantly up-regulated and 67 phosphosites on 43 proteins was down-regulated. Among those proteins, 13 were protein kinases (PKs), 13 were transcription factors (TFs) across 10 families and 17 were metabolism related enzymes. Meanwhile, Motif-X analysis of the phosphorylation sites showed that 16 motifs are significantly enriched, including 8 novel phosphorylation motifs. In addition, KEGG and functional interacting network analysis revealed that phosphorylation cascades play the crucial regulation roles in PP-dependent signaling pathways, and highlighted the potential central position of the mitogen-activated protein kinases (MAPKs) in them. These analyses provide direct insights into the molecule mechanisms of cellular response induced by PP. SIGNIFICANCE PP as an insect cytokine participated in diverse functions including immunity control paralysis induction, regulation of cell morphology and proliferation. In this study, we performed firstly a label-free quantitative phosphoproteomics analysis. We found some new phosphorylation targets of PP-stimulation. Meanwhile, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis and functional networks revealed that phosphorylation cascades play the crucial regulation roles in PP-dependent signaling pathways. In addition, the potential central position of the mitogen-activated protein kinases (MAPKs) was highlighted in PP-dependent signaling pathways. We think our findings may help us gain a systematic understanding of the cytokine-dependent response regulation in insects.
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Affiliation(s)
- Liang Song
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 216, Tiansheng Road, Beibei, Chongqing 400716, China.
| | - Fei Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 216, Tiansheng Road, Beibei, Chongqing 400716, China.
| | - Zhaoming Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 216, Tiansheng Road, Beibei, Chongqing 400716, China.
| | - Xiaoting Hua
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 216, Tiansheng Road, Beibei, Chongqing 400716, China.
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 216, Tiansheng Road, Beibei, Chongqing 400716, China.
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Im SA, Kim JW, Kim HS, Park CS, Shin E, Do SG, Park YI, Lee CK. Prevention of azoxymethane/dextran sodium sulfate-induced mouse colon carcinogenesis by processed Aloe vera gel. Int Immunopharmacol 2016; 40:428-435. [PMID: 27697726 DOI: 10.1016/j.intimp.2016.09.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 09/19/2016] [Accepted: 09/22/2016] [Indexed: 02/07/2023]
Abstract
The preventive effect of a processed Aloe vera gel (PAG) on colon carcinogenesis was examined using an azoxymethane (AOM)-initiated and dextran sodium sulfate (DSS)-promoted mouse colon carcinogenesis model. Oral administration of PAG (200, or 400mg/kg/day) significantly reduced the multiplicity of colonic adenomas and adenocarcinomas compared with the AOM/DSS only-treated mice. In the mice treated with 400mg/kg of PAG, adenoma and adenocarcinoma development was reduced to 80% and 60%, respectively, compared to 100% in the PAG-untreated AOM/DSS-treated mice. Western blot analysis using colon extracts showed that PAG reduced the activation of nuclear factor kappa B (NF-κB), resulting in the inhibition of inducible nitric oxide synthase and cyclooxygenase-2 expression. PAG appeared to inhibit the NF-κB activation through the activation of peroxisome proliferator-activated receptor gamma. PAG also inhibited the expression and phosphorylation of signal transducer and activator of transcription 3, which is known to connect inflammation and cancer. In addition, PAG inhibited cell cycle progression-inducing cellular factors, such as extracellular signal-regulated kinases 1/2, cyclin-dependent kinase 4, and cyclin D1. On the other hand, PAG increased the expression of Caudal-related homeobox transcription factor 2, which is known to be a tumor suppressor in colorectal cancer. These findings show that PAG suppresses colitis-related colon carcinogenesis by inhibiting both chronic inflammation and cell cycle progression in the colon.
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Affiliation(s)
- Sun-A Im
- College of Pharmacy, Chungbuk National University, Cheongju 28644, South Korea
| | - Ji-Wan Kim
- College of Pharmacy, Chungbuk National University, Cheongju 28644, South Korea
| | - Hee-Suk Kim
- College of Pharmacy, Chungbuk National University, Cheongju 28644, South Korea
| | - Chan-Su Park
- College of Pharmacy, Chungbuk National University, Cheongju 28644, South Korea
| | | | | | - Young In Park
- College of Pharmacy, Korea University, Sejong 30019, South Korea
| | - Chong-Kil Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28644, South Korea.
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Kumar R, Li DQ. PAKs in Human Cancer Progression: From Inception to Cancer Therapeutic to Future Oncobiology. Adv Cancer Res 2016; 130:137-209. [PMID: 27037753 DOI: 10.1016/bs.acr.2016.01.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Since the initial recognition of a mechanistic role of p21-activated kinase 1 (PAK1) in breast cancer invasion, PAK1 has emerged as one of the widely overexpressed or hyperactivated kinases in human cancer at-large, allowing the PAK family to make in-roads in cancer biology, tumorigenesis, and cancer therapeutics. Much of our current understanding of the PAK family in cancer progression relates to a central role of the PAK family in the integration of cancer-promoting signals from cell membrane receptors as well as function as a key nexus-modifier of complex, cytoplasmic signaling network. Another core aspect of PAK signaling that highlights its importance in cancer progression is through PAK's central role in the cross talk with signaling and interacting proteins, as well as PAK's position as a key player in the phosphorylation of effector substrates to engage downstream components that ultimately leads to the development cancerous phenotypes. Here we provide a comprehensive review of the recent advances in PAK cancer research and its downstream substrates in the context of invasion, nuclear signaling and localization, gene expression, and DNA damage response. We discuss how a deeper understanding of PAK1's pathobiology over the years has widened research interest to the PAK family and human cancer, and positioning the PAK family as a promising cancer therapeutic target either alone or in combination with other therapies. With many landmark findings and leaps in the progress of PAK cancer research since the infancy of this field nearly 20 years ago, we also discuss postulated advances in the coming decade as the PAK family continues to shape the future of oncobiology.
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Affiliation(s)
- R Kumar
- School of Medicine and Health Sciences, George Washington University, Washington, DC, United States; Rajiv Gandhi Center of Biotechnology, Thiruvananthapuram, India.
| | - D-Q Li
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China; Key Laboratory of Breast Cancer in Shanghai, Shanghai Medical College, Fudan University, Shanghai, China; Key Laboratory of Epigenetics in Shanghai, Shanghai Medical College, Fudan University, Shanghai, China.
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37
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Werner K, Weitz J, Stange DE. Organoids as Model Systems for Gastrointestinal Diseases: Tissue Engineering Meets Genetic Engineering. CURRENT PATHOBIOLOGY REPORTS 2016. [DOI: 10.1007/s40139-016-0100-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Dammann K, Khare V, Harpain F, Lang M, Kurtovic A, Mesteri I, Evstatiev R, Gasche C. PAK1 promotes intestinal tumor initiation. Cancer Prev Res (Phila) 2015; 8:1093-101. [PMID: 26304465 DOI: 10.1158/1940-6207.capr-15-0205-t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 08/04/2015] [Indexed: 11/16/2022]
Abstract
p21-activated kinase 1 (PAK1) is a serine/threonine kinase that is overexpressed in colorectal cancer. PAK1 is a target of mesalamine [5-aminosylicylic acid (5-ASA)], a common drug for the treatment of ulcerative colitis with prospective chemopreventive properties. Here, we investigated whether PAK1 deletion impedes tumorigenesis in murine intestinal cancer models. Ten-week-old APC(min) or APC(min)/PAK1(-/-) mice were monitored for 8 weeks, euthanized, and assessed for tumor number and size. Six- to 8-week-old PAK1(-/-) and wild-type (WT) mice received one 10 mg/kg intraperitoneal injection of azoxymethane (AOM) and four cycles of 1.7% dextran sodium sulfate (DSS) for 4 days followed by 14 days of regular water. Mice also received 5-ASA via diet. Tumor incidence and size was assessed via colonoscopy and pathology. Molecular targets of PAK1 and 5-ASA were evaluated via immunohistochemistry (IHC) in both models. PAK1 deletion reduced tumor multiplicity and tumor burden but did not alter average tumor size in APC(min) mice. IHC revealed that PAK1 deletion reduced p-AKT, β-catenin, and c-Myc expression in APC(min) adenomas. Colonoscopy and pathologic analysis revealed that PAK1 deletion reduced tumor multiplicity without affecting tumor size in AOM/DSS-treated mice. 5-ASA treatment and PAK1 deletion impeded tumor multiplicity and dysplastic lesions in AOM/DSS mice. IHC further revealed that 5-ASA blocked β-catenin signaling via inhibition of PAK1/p-AKT. These data indicate that PAK1 contributes to initiation of intestinal carcinogenesis.
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Affiliation(s)
- Kyle Dammann
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria
| | - Vineeta Khare
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria
| | - Felix Harpain
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria
| | - Michaela Lang
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria
| | - Azra Kurtovic
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria
| | - Ildiko Mesteri
- Clinical Institute of Pathology, Medical University of Vienna, Vienna, Austria
| | - Rayko Evstatiev
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria
| | - Christoph Gasche
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology and Christian Doppler Laboratory for Molecular Cancer Chemoprevention, Medical University of Vienna, Vienna, Austria.
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