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Kumar A, Schwab M, Laborit Labrada B, Silveira MAD, Goudreault M, Fournier É, Bellmann K, Beauchemin N, Gingras AC, Bilodeau S, Laplante M, Marette A. SHP-1 phosphatase acts as a coactivator of PCK1 transcription to control gluconeogenesis. J Biol Chem 2023; 299:105164. [PMID: 37595871 PMCID: PMC10504565 DOI: 10.1016/j.jbc.2023.105164] [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: 12/02/2022] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/20/2023] Open
Abstract
We previously reported that the protein-tyrosine phosphatase SHP-1 (PTPN6) negatively regulates insulin signaling, but its impact on hepatic glucose metabolism and systemic glucose control remains poorly understood. Here, we use co-immunoprecipitation assays, chromatin immunoprecipitation sequencing, in silico methods, and gluconeogenesis assay, and found a new mechanism whereby SHP-1 acts as a coactivator for transcription of the phosphoenolpyruvate carboxykinase 1 (PCK1) gene to increase liver gluconeogenesis. SHP-1 is recruited to the regulatory regions of the PCK1 gene and interacts with RNA polymerase II. The recruitment of SHP-1 to chromatin is dependent on its association with the transcription factor signal transducer and activator of transcription 5 (STAT5). Loss of SHP-1 as well as STAT5 decrease RNA polymerase II recruitment to the PCK1 promoter and consequently PCK1 mRNA levels leading to blunted gluconeogenesis. This work highlights a novel nuclear role of SHP-1 as a key transcriptional regulator of hepatic gluconeogenesis adding a new mechanism to the repertoire of SHP-1 functions in metabolic control.
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Affiliation(s)
- Amit Kumar
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Michael Schwab
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Beisy Laborit Labrada
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Maruhen Amir Datsch Silveira
- Centre de Recherche du CHU de Québec - Université Laval, Axe Oncologie, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada; Département de biologie moléculaire, biochimie médicale et pathologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada
| | - Marilyn Goudreault
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Quebec, Canada; Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Sinai Health System, Toronto, Ontario, Canada
| | - Éric Fournier
- Centre de Recherche du CHU de Québec - Université Laval, Axe Oncologie, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada; Département de biologie moléculaire, biochimie médicale et pathologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada; Centre de recherche en données massives de l'Université Laval, Québec, Quebec, Canada
| | - Kerstin Bellmann
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Nicole Beauchemin
- Department of Oncology, Medicine and Biochemistry, Rosalind and Morris Goodman Cancer Institute, McGill University, Montreal, Quebec, Canada
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Sinai Health System, Toronto, Ontario, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Steve Bilodeau
- Centre de Recherche du CHU de Québec - Université Laval, Axe Oncologie, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada; Département de biologie moléculaire, biochimie médicale et pathologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada; Centre de recherche en données massives de l'Université Laval, Québec, Quebec, Canada
| | - Mathieu Laplante
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada
| | - André Marette
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada; Institute of Nutrition and Functional Foods, Laval University, Québec, Quebec, Canada.
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Miftahussurur M, Alfaray RI, Fauzia KA, Dewayani A, Doohan D, Waskito LA, Rezkitha YAA, Utomo DH, Somayana G, Fahrial Syam A, Lubis M, Akada J, Matsumoto T, Yamaoka Y. Low-grade intestinal metaplasia in Indonesia: Insights into the expression of proinflammatory cytokines during Helicobacter pylori infection and unique East-Asian CagA characteristics. Cytokine 2023; 163:156122. [PMID: 36640695 DOI: 10.1016/j.cyto.2022.156122] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 01/15/2023]
Abstract
Helicobacter pylori infection is a major cause of intestinal metaplasia. In this study, we aimed to understand the reason underlying the low grade and incidence of intestinal metaplasia in Indonesia, based on the expression of genes encoding proinflammatory cytokines in gastric biopsy specimens. The possible reasons for the lesser virulence of the East-Asian-type CagA in Indonesia than that of the Western-type CagA, which is not common in other countries, were also investigated. The mRNA expression of cytokines was evaluated using real-time PCR. CagA characteristics were analyzed using in silico analysis. The expression of cytokines was typically not robust, among H. pylori-infected subjects in Indonesia, despite them predominantly demonstrating the East-Asian-type CagA. This might partially be explained by the characteristics of the East-Asian-type CagA in Indonesia, which showed a higher instability index and required higher energy to interact with proteins related to the cytokine induction pathway compared with the other types (p < 0.001 and p < 0.05, respectively). Taken together, besides the low prevalence of H. pylori, the low inflammatory response of the host and low CagA virulence, even among populations with high infection rates, may play an essential role in the low grade and low incidence of intestinal metaplasia in Indonesia. We believe that these findings would be relevant for better understanding of intestinal metaplasia, which is closely associated with the development of gastric cancer.
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Affiliation(s)
- Muhammad Miftahussurur
- Division of Gastroentero-Hepatology, Department of Internal Medicine, Faculty of Medicine-Dr. Soetomo Teaching Hospital, Universitas Airlangga, Jalan Mayjend Prof, Dr. Moestopo, No. 6-8, Surabaya, Surabaya 60131, Indonesia; Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia.
| | - Ricky Indra Alfaray
- Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia; Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, 1-1, Idaigaoka, Hasama-machi, Yufu Oita 879-5593, Japan.
| | - Kartika Afrida Fauzia
- Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia; Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, 1-1, Idaigaoka, Hasama-machi, Yufu Oita 879-5593, Japan; Department of Public Health and Preventive Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia.
| | - Astri Dewayani
- Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia; Department of Infectious Disease Control, Oita University Faculty of Medicine, 1-1, Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan; Department of Anatomy, Histology and Pharmacology, Universitas Airlangga, Surabaya 60131, Indonesia.
| | - Dalla Doohan
- Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia; Department of Anatomy, Histology and Pharmacology, Universitas Airlangga, Surabaya 60131, Indonesia.
| | - Langgeng Agung Waskito
- Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia; Department of Physiology and Medical Biochemistry, Faculty of Medicine, Universitas Airlangga, Surabaya, 60132, Indonesia; Department of Internal Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia.
| | - Yudith Annisa Ayu Rezkitha
- Helicobacter pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya 60115, Indonesia; Department of Internal Medicine, Faculty of Medicine, University of Muhammadiyah, Surabaya, Surabaya 60113, Indonesia.
| | - Didik Huswo Utomo
- Research and Education Center for Bioinformatics, Indonesia Institute of Bioinformatics, Malang 65162, Indonesia.
| | - Gde Somayana
- Gastroentero Hepatology Division, Department of Internal Medicine, Faculty of Medicine-Sanglah Hospital, Udayana University, Denpasar, Bali 80114, Indonesia.
| | - Ari Fahrial Syam
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta 10430, Indonesia.
| | - Masrul Lubis
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, Universitas Sumatera Utara, Medan 20222, Indonesia
| | - Junko Akada
- Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, 1-1, Idaigaoka, Hasama-machi, Yufu Oita 879-5593, Japan.
| | - Takashi Matsumoto
- Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, 1-1, Idaigaoka, Hasama-machi, Yufu Oita 879-5593, Japan.
| | - Yoshio Yamaoka
- Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, 1-1, Idaigaoka, Hasama-machi, Yufu Oita 879-5593, Japan; Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, TX 77030, USA.
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Azmatullah S, Khan AU, Qazi NG, Nadeem H, Irshad N. Pharmacological evaluation of newly synthesized organotin IV complex for antiulcer potential. BMC Pharmacol Toxicol 2022; 23:58. [PMID: 35906691 PMCID: PMC9335977 DOI: 10.1186/s40360-022-00596-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 07/12/2022] [Indexed: 11/29/2022] Open
Abstract
The present study aims to investigate the newly synthesized organotin (IV) complex (2E, 2′E) dibutylstannanediyl bis (4-(4-nitrophenyl) amino)-4-oxobut-2-enoate (DTN) for its anti-ulcer potential. Characterization performed by carbon nuclear magnetic resonance spectroscopy proved that all values are in the expected ranges of the new compound. Gastroprotective activity of DTN was evaluated through in-silico, anti-H. pylori, in-vitro, in-vivo, and ex-vivo proteomic analysis. In-silico analysis shows that DTN possess stable binding with protein targets involved in gastric ulcer pathophysiology. DTN exhibited an inhibitory effect against 2,2-diphenyl-1-picrylhydrazyl, H. pylori and hydrogen potassium ATPase (H+/K+-ATPase). The antiulcer activity was performed using an ethanol-induced gastric ulcer model in rats. Anti-oxidant profile of DTN showed a significant increase in glutathione-S-transferase, glutathione and catalase levels whereas lipid peroxidation levels were reduced. Histopathological findings confirmed that DTN protected the gastric mucosa of rats. Inflammatory markers tumor necrosis factor-alpha, nuclear factor kappa B, cyclooxygenase-2, interleukin 6 and interleukin-1β were reduced and prostaglandin-E2 restored expression of these cytokines in DTN pretreated animals when analyzed by using immunohistochemistry, enzyme-linked immunosorbent assay and western blot techniques. In real-time polymerase chain reaction technique, the expression of H+/K+-ATPase was downregulated in DTN pretreated group. DTN did not cause any mortality up to 400 mg/Kg. This study indicates that the newly synthesized compound DTN, possess stable binding against selected targets. DTN exhibits a gastro-protective effect, mediated via anti-H. pylori, H+/K+-ATPase inhibition, anti-oxidant and anti-inflammatory pathways, exploring its therapeutic potential in gastric ulcer management.
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Affiliation(s)
- Syed Azmatullah
- Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Arif-Ullah Khan
- Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan.
| | - Neelam Gul Qazi
- Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Humaira Nadeem
- Department of Pharmaceutical Chemistry, Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Nadeem Irshad
- Department of Pharmacy, Quaid i Azam University, Islamabad, Pakistan
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Ghasemi M, Bakhshi B, Khashei R, Soudi S. Mesoporous silica nano-adjuvant triggers pro-inflammatory responses in Caco-2/peripheral blood mononuclear cell (PBMC) co-cultures. Nanobiomedicine (Rij) 2022; 9:18495435221088374. [PMID: 35677573 PMCID: PMC9168868 DOI: 10.1177/18495435221088374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 02/06/2022] [Indexed: 11/28/2022] Open
Abstract
The aim of this study was to evaluate the cytotoxicity and immune-stimulatory
effect of Mesoporous silica nanoparticle (MSN) Nano-adjuvant on pro-inflammatory
cytokines and pattern recognition receptors (PRR) genes expression in
Caco-2/PBMC co-culture model. MSNs were synthesized and characterized by
scanning electron microscope (SEM), Brunauer Emmett Teller (BET) and Barrett
Joyner Halenda (BJH) techniques. The BET specific surface area of MSNs was
around 947 m2/g and the total pore volume and average pore diameter
were 1.5 cm3/g and 8.01 nm, respectively. At the concentration of
10 µg/mL, MSN showed a low and time-dependent cytotoxicity on Caco-2 cells,
while no cytotoxic effect was observed for 0.1 and 1 µg/mL concentrations after
24, 48 and 72 h. The expression of pro-inflammatory cytokines genes (IL-1, IL-8
and TNF-α) in co-cultures treated with different concentrations of MSN showed a
dose-dependent significant increase up to 17.44, 2.722 and 4.34 folds,
respectively, while the expression augmentation of IL-1 gene was significantly
higher than the others. This indicates slight stimulation of intestinal
inflammation. Different concentrations of MSN significantly increased TLR4 and
NOD2 expression to 4.14 and 2.14 folds, respectively. NOD1 was not affected
significantly. It can be concluded that MSN might increase protective immune
responses against antigens as a vaccine adjuvant candidate. It seems that
stimulation of TNF-α, IL-1, and IL-8 expression in enterocytes probably
transpires through the agonistic activity of MSN for TLRs including TLR4, while
NOD2-associated signaling pathways are also involved. This study provides an
overall picture of MSN as a novel and potent oral adjuvant for mucosal
immunity.
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Affiliation(s)
- Maryam Ghasemi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bita Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Reza Khashei
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sara Soudi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Ghasemi M, Bakhshi B, Khashei R, Soudi S, Boustanshenas M. Vibrio cholerae toxin coregulated pilus provokes inflammatory responses in Coculture model of Caco-2 and peripheral blood mononuclear cells (PBMC) leading to increased colonization. Microbiol Immunol 2021; 65:238-244. [PMID: 33913531 DOI: 10.1111/1348-0421.12889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 03/09/2021] [Accepted: 04/26/2021] [Indexed: 11/30/2022]
Abstract
The aim of this study was to assess the modulatory effect of TcpA in the expression of CEACAM1 adhesin molecule and IL-1, IL-8, and TNF-α pro-inflammatory cytokines in the Coculture model of Caco-2/PBMC (peripheral blood mononuclear cell) that can mimic the intestinal milieu. The TcpA gene from Vibrio cholerae ATCC14035 was cloned in pET-28a and transformed into Escherichia coli Bl-21. The recombinant TcpA-His6 protein was expressed and purified using Ni-column chromatography. The sequencing of transformed plasmid and Western blot analysis of purified protein confirmed the identity of rTcp. The cytotoxicity of different concentrations of recombinant protein for human colon carcinoma cell line (human colorectal adenocarcinoma cell [Caco-2 cell]) was assessed by MTT assay and showed viability of 92%, 82%, and 70%, for 10 µg/mL of TcpA after 24, 48, and 72 h, respectively. Co-cultures of Caco-2 and PBMCs were used to mimic the intestinal milieu and treated with different concentrations of rTcpA (1, 5, 10, and 50 µg/mL). Our data showed about 2.04-, 3.37-, 3.68-, and 42.7-fold increase in CEACAM1 gene expression, respectively, compared with the nontreated Caco-2/PBMC Coculture. Moreover, the expression of IL-1, IL-8, and TNF-α genes was significantly increased up to 15.75-, 7.04-, and 80.95-folds, respectively. In conclusion, V. cholerae TcpA induces statistically significant dose-dependent stimulatory effect on TNF-α, IL-,1, and IL-8 pro-inflammatory cytokines expression. Of these, TNF-α was much more affected which, consequently, elevated the CEACAM1 expression level in IECs. This suggests that TcpA protein is a critical effector as an inducer of increased adhesion potential of V. cholera as well as inflammatory responses of host intestinal tissue.
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Affiliation(s)
- Maryam Ghasemi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bita Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Reza Khashei
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sara Soudi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mina Boustanshenas
- Antimicrobial Resistance Research Center, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran
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Feng L, Jian R, Wang Y, Yao Y, Gao M, Du H. A close relationship between Helicobacter pylori infection and the serum level of CD47 in adults. Scand J Gastroenterol 2020; 55:640-645. [PMID: 32493095 DOI: 10.1080/00365521.2020.1772863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Objectives: Although Helicobacter pylori (H. pylori) infection is one of the most important risk factors for gastric cancer, the molecular mechanisms underlying the progression of H. pylori-induced gastric cancer remain unclear. Previous studies have demonstrated that Integrin-associated protein (CD47) plays an important role in the development of gastric cancer. Hence, the aim of this study was to preliminarily explore the relationship between CD47 and H. pylori infection.Methods: A total of 417 adults who underwent health checkups at a hospital were recruited in 2018. Serum levels of CD47 and tumor necrosis factor-α (TNF-α) were determined using an enzyme-linked immunosorbent assay. 13C urea breath test (13C-UBT) was carried out to diagnose H. pylori infection in all participants.Results: Compared with H. pylori-negative participants, H. pylori-positive participants have higher levels of serum CD47 and TNF-α. H. pylori infection, the levels of serum TNF-α and low density lipoprotein (LDL) are the independent predictors of serum level of CD47 in adults. In addition, a potential diagnostic value of serum CD47 level for H. pylori infection has been demonstrated in our study.Conclusion: H. pylori infection is closely associated with the serum level of CD47 in adults, suggesting that H. pylori may promote gastric cancer progression by activating CD47-mediated oncogenic pathways.
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Affiliation(s)
- Lei Feng
- The Division of Gastroenterology and Hepatology, Suining Central Hospital, Suining City, Sichuan Province, China
| | - Rong Jian
- The Division of Gastroenterology and Hepatology, Suining Central Hospital, Suining City, Sichuan Province, China
| | - Yan Wang
- The Division of Gastroenterology and Hepatology, Suining Central Hospital, Suining City, Sichuan Province, China
| | - Yong Yao
- The Division of Gastroenterology and Hepatology, Suining Central Hospital, Suining City, Sichuan Province, China
| | - Mingsheng Gao
- The Division of Gastroenterology and Hepatology, Suining Central Hospital, Suining City, Sichuan Province, China
| | - Heng Du
- The Division of Gastroenterology and Hepatology, Suining Central Hospital, Suining City, Sichuan Province, China
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Sokolova O, Naumann M. Crosstalk Between DNA Damage and Inflammation in the Multiple Steps of Gastric Carcinogenesis. Curr Top Microbiol Immunol 2019; 421:107-137. [PMID: 31123887 DOI: 10.1007/978-3-030-15138-6_5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Over the last years, intensive investigations in molecular biology and cell physiology extended tremendously the knowledge about the association of inflammation and cancer. In frame of this paradigm, the human pathogen Helicobacter pylori triggers gastritis and gastric ulcer disease, and contributes to the development of gastric cancer. Mechanisms, by which the bacteria-induced inflammation in gastric mucosa leads to intestinal metaplasia and carcinoma, are represented in this review. An altered cell-signaling response and increased production of free radicals by epithelial and immune cells account for the accumulation of DNA damage in gastric mucosa, if infection stays untreated. Host genetics and environmental factors, especially diet, can accelerate the process, which offers the opportunity of intervention based on a balanced nutrition. It is supposed that inflammation might influence stem- or progenitor cells in gastric tissue predisposing for metaplasia or tumor relapse. Herein, DNA is strongly mutated and labile, which restricts therapy options. Thus, the understanding of the mechanisms that underlie gastric carcinogenesis will be of preeminent importance for the development of strategies for screening and early detection. As most gastric cancer patients face late-stage disease with a poor overall survival, the development of multi-targeted therapeutic intervention strategies is a major challenge for the future.
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Affiliation(s)
- Olga Sokolova
- Institute of Experimental Internal Medicine, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany.
| | - Michael Naumann
- Institute of Experimental Internal Medicine, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
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Rossi AFT, Contiero JC, Manoel-Caetano FDS, Severino FE, Silva AE. Up-regulation of tumor necrosis factor-α pathway survival genes and of the receptor TNFR2 in gastric cancer. World J Gastrointest Oncol 2019; 11:281-294. [PMID: 31040894 PMCID: PMC6475670 DOI: 10.4251/wjgo.v11.i4.281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/16/2019] [Accepted: 02/28/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Gastric carcinogenesis can be induced by chronic inflammation triggered by Helicobacter pylori (H. pylori) infection. Tumor necrosis factor (TNF)-α and its receptors (TNFR1 and TNFR2) regulate important cellular processes, such as apoptosis and cell survival, and the disruption of which can lead to cancer. This signaling pathway is also modulated by microRNAs (miRNAs), altering gene expression.
AIM To evaluate the mRNA and miRNAs expression involved in the TNF-α signaling pathway in gastric cancer (GC) tissues and its relationship.
METHODS Quantitative polymerase chain reaction (qPCR) by TaqMan® assay was used to quantify the RNA transcript levels of TNF-α signaling pathway (TNF, TNFR1, TNFR2, TRADD, TRAF2, CFLIP, NFKB1, NFKB2, CASP8, CASP3) and miRNAs that targets genes from this pathway (miR-19a, miR-34a, miR-103a, miR-130a, miR-181c) in 30 GC fresh tissue samples. Molecular diagnosis of H. pylori was performed by nested PCR for gene HSP60. A miRNA:mRNA interaction network was construct using Cytoscape v3.1.1 from the in silico analysis performed using public databases.
RESULTS Up-regulation of cellular survival genes as TNF, TNFR2, TRADD, TRAF2, CFLIP, and NFKB2, besides CASP8 and miR-34a was observed in GC tissues, whereas mediators of apoptosis such as TNFR1 and CASP3 were down-regulated. When the samples were stratified by histological type, the expression of miR-103a and miR-130a was significantly increased in the diffuse-type of GC compared to the intestinal-type. However, no influence of H. pylori infection was observed on the expression levels of mRNA and miRNAs analyzed. Moreover, the miRNA:mRNA interaction network showed several interrelations between the miRNAs and their target genes, highlighting miR-19a and miR-103a, which has as predicted or validated target a large number of genes in the TNF-α pathway, including TNF, TNFR1, TNFR2, CFLIP, TRADD, CASP3 and CASP8.
CONCLUSION Our findings show that cell survival genes mediated by TNF/TNFR2 binding is up-regulated in GC favoring its pro-tumoral effect, while pro-apoptotic genes as CASP3 and TNFR1 are down-regulated, indicating disbalance between apoptosis and cell proliferation processes in this neoplasm. This process can also be influenced by an intricate regulatory network of miRNA:mRNA.
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Affiliation(s)
- Ana Flávia Teixeira Rossi
- Department of Biology, São Paulo State University – UNESP, São José do Rio Preto, SP 15054-000, Brazil
| | - Júlia Cocenzo Contiero
- Department of Biology, São Paulo State University – UNESP, São José do Rio Preto, SP 15054-000, Brazil
| | | | - Fábio Eduardo Severino
- Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University – UNESP, Botucatu, SP 18618-687, Brazil
| | - Ana Elizabete Silva
- Department of Biology, São Paulo State University – UNESP, São José do Rio Preto, SP 15054-000, Brazil
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Anandam KY, Alwan OA, Subramanian VS, Srinivasan P, Kapadia R, Said HM. Effect of the proinflammatory cytokine TNF-α on intestinal riboflavin uptake: inhibition mediated via transcriptional mechanism(s). Am J Physiol Cell Physiol 2018; 315:C653-C663. [PMID: 30156861 DOI: 10.1152/ajpcell.00295.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Riboflavin (RF), is essential for normal cellular metabolism/function. Intestinal RF absorption occurs via a specific carrier-mediated process that involves the apical transporter RFVT-3 ( SLC52A3) and the basolateral RFVT-1 (SLC52A1). Previously, we characterized different cellular/molecular aspects of the intestinal RF uptake process, but nothing is known about the effect of proinflammatory cytokines on the uptake event. We addressed this issue using in vitro, ex vivo, and in vivo models. First, we determined the level of mRNA expression of the human (h)RFVT-3 and hRFVT-1 in intestinal tissue of patients with inflammatory bowel disease (IBD) and observed a markedly lower level compared with controls. In the in vitro model, exposing Caco-2 cells to tumor necrosis factor-α (TNF-α) led to a significant inhibition in RF uptake, an effect that was abrogated upon knocking down TNF receptor 1 (TNFR1). The inhibition in RF uptake was associated with a significant reduction in the expression of hRFVT-3 and -1 protein and mRNA levels, as well as in the activity of the SLC52A3 and SLC52A1 promoters. The latter effects appear to involve Sp1 and NF-κB sites in these promoters. Similarly, exposure of mouse small intestinal enteroids and wild-type mice to TNF-α led to a significant inhibition in physiological and molecular parameters of intestinal RF uptake. Collectively, these findings demonstrate that exposure of intestinal epithelial cells to TNF-α leads to inhibition in RF uptake and that this effect is mediated, at least in part, via transcriptional mechanism(s). These findings may explain the significantly low RF levels observed in patients with IBD.
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Affiliation(s)
- Kasin Yadunandam Anandam
- Department of Medicine, University of California , Irvine, California.,Department of Physiology/Biophysics, University of California , Irvine, California.,Department of Medical Research, Veterans Affairs Medical Center , Long Beach, California
| | - Omar A Alwan
- Department of Medicine, University of California , Irvine, California.,Department of Physiology/Biophysics, University of California , Irvine, California.,Department of Medical Research, Veterans Affairs Medical Center , Long Beach, California
| | - Veedamali S Subramanian
- Department of Medicine, University of California , Irvine, California.,Department of Physiology/Biophysics, University of California , Irvine, California.,Department of Medical Research, Veterans Affairs Medical Center , Long Beach, California
| | - Padmanabhan Srinivasan
- Department of Medicine, University of California , Irvine, California.,Department of Physiology/Biophysics, University of California , Irvine, California.,Department of Medical Research, Veterans Affairs Medical Center , Long Beach, California
| | - Rubina Kapadia
- Department of Medicine, University of California , Irvine, California.,Department of Physiology/Biophysics, University of California , Irvine, California.,Department of Medical Research, Veterans Affairs Medical Center , Long Beach, California
| | - Hamid M Said
- Department of Medicine, University of California , Irvine, California.,Department of Physiology/Biophysics, University of California , Irvine, California.,Department of Medical Research, Veterans Affairs Medical Center , Long Beach, California
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Subramanian VS, Sabui S, Subramenium GA, Marchant JS, Said HM. Tumor necrosis factor alpha reduces intestinal vitamin C uptake: a role for NF-κB-mediated signaling. Am J Physiol Gastrointest Liver Physiol 2018; 315:G241-G248. [PMID: 29631379 PMCID: PMC6139644 DOI: 10.1152/ajpgi.00071.2018] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Sodium-dependent vitamin C transporter-1 (SVCT-1) is the major transporter mediating intestinal vitamin C uptake. Intestinal inflammation and prolonged infection are associated with increased serum and intestinal mucosa levels of tumor necrosis factor-α (TNF-α), which also exerts profound effects on the intestinal absorption process. Elevated levels of TNF-α have been linked to the pathogenesis of inflammatory bowel disease (IBD) and malabsorption of nutrients, and patients with this condition have low levels of vitamin C. To date, little is known about the effect of TNF-α on intestinal absorption of vitamin C. We studied the impact of TNF-α on ascorbic acid (AA) transport using a variety of intestinal preparations. The expression level of human SVCT-1 mRNA is significantly lower in patients with IBD. TNF-α treated Caco-2 cells and mice showed a significant inhibition of intestinal 14C-AA uptake. This inhibition was associated with significant decreases in SVCT-1 protein, mRNA, and heterogeneous nuclear RNA levels in TNF-α treated Caco-2 cells, mouse jejunum, and enteroids. Also, TNF-α caused a significant inhibition in the SLC23A1 promoter activity. Furthermore, treatment of Caco-2 cells with celastrol (NF-κB inhibitor) blocked the inhibitory effect caused by TNF-α on AA uptake, SVCT-1 protein, and mRNA expression, as well as the activity of SLC23A1 promoter. Treatment of TNF-α also led to a significant decrease in the expression of hepatocyte nuclear factor-1-α, which drives the basal activity of SLC23A1 promoter, and this effect was reversed by celastrol. Together, these findings show that TNF-α inhibits intestinal AA uptake, and this effect is mediated, at least in part, at the level of transcription of the SLC23A1 gene via the NF-κB pathway. NEW & NOTEWORTHY Our findings show that tumor necrosis factor-α inhibits intestinal ascorbic acid uptake in both in vitro and in vivo systems, and this inhibitory effect is mediated, at least in part, at the level of transcription of the SLC23A1 (sodium-dependent vitamin C transporter-1) gene via the NF-κB pathway.
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Affiliation(s)
- Veedamali S. Subramanian
- 1Department of Medicine, University of California, Irvine, California,2Department of Physiology and Biophysics, University of California, Irvine, California,3Department of Veterans Affairs Medical Center, Long Beach, California
| | - Subrata Sabui
- 1Department of Medicine, University of California, Irvine, California,2Department of Physiology and Biophysics, University of California, Irvine, California,3Department of Veterans Affairs Medical Center, Long Beach, California
| | - Ganapathy A. Subramenium
- 1Department of Medicine, University of California, Irvine, California,2Department of Physiology and Biophysics, University of California, Irvine, California,3Department of Veterans Affairs Medical Center, Long Beach, California
| | - Jonathan S. Marchant
- 4Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Hamid M. Said
- 1Department of Medicine, University of California, Irvine, California,2Department of Physiology and Biophysics, University of California, Irvine, California,3Department of Veterans Affairs Medical Center, Long Beach, California
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11
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Olive (Olea europaea) leaf methanolic extract prevents HCl/ethanol-induced gastritis in rats by attenuating inflammation and augmenting antioxidant enzyme activities. Biomed Pharmacother 2017; 91:338-349. [PMID: 28463797 DOI: 10.1016/j.biopha.2017.04.069] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/24/2017] [Accepted: 04/17/2017] [Indexed: 12/12/2022] Open
Abstract
Gastritis is preponderantly characterized by inflammation of the lining epithelial layer and the chronic gastritis is considered as a pre-cancer lesion. For many centuries olive (Olea europaea) leaf has been used for its putative health potential, nonetheless, to date, the gastroprotective effects of olive leaves have not been studied yet. Hence, in this study we investigated whether olive leaf extract (OLE) could protect gastric mucosa against HCl/ethanol-induced gastric mucosal damage in rats. Hcl/ethanol administration caused significant damage to the gastric mucosa, as confirmed by gastric ulcer index and histological evaluation. However, this damage was largely prevented by pre-administering 20mg/kg omeprazole or 100mg/kg OLE. Interestingly, the damage was completely prevented by pre-administering 200 and 300mg/kg OLE. Moreover, OLE attenuated the inflammatory response by decreasing nuclear factor-κB (NF-κB), cycloxygenase-2 (COX-2) and tumor necrosis factor-α (TNF-α) expressions, and down-regulating inducible nitric oxide synthase (iNOS) and interleukin-1β (IL-1β) in gastric mucosa. The gastroprotective mechanism of OLE involved the promotion of enzymatic and nonenzymatic molecules (superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glutathione reduced form), promoting nuclear factor erythroid 2-related factor 2 (Nrf2) mRNA expression, halting lipid peroxidation and preventing the overproduction of nitric oxide. Together, our findings clearly demonstrated that OLE could prevent HCl/ethanol-induced gastritis by attenuating inflammation and oxidant/antioxidant imbalance. Indeed, OLE could potentially be useful as a natural therapy for gastritis.
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Helicobacter pylori: A Paradigm Pathogen for Subverting Host Cell Signal Transmission. Trends Microbiol 2017; 25:316-328. [PMID: 28057411 DOI: 10.1016/j.tim.2016.12.004] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 11/27/2016] [Accepted: 12/07/2016] [Indexed: 02/07/2023]
Abstract
Helicobacter pylori colonizes the gastric mucosa in the human stomach and represents a major risk factor for peptic ulcer disease and gastric cancer. Here, we summarize our current knowledge of the complex impact of H. pylori on manipulating host signalling networks, that is, by the cag pathogenicity island (cagPAI)-encoded type IV secretion system (T4SS). We show that H. pylori infections reflect a paradigm for interspecies contact-dependent molecular communication, which includes the disruption of cell-cell junctions and cytoskeletal rearrangements, as well as proinflammatory, cell cycle-related, proliferative, antiapoptotic, and DNA damage responses. The contribution of these altered signalling cascades to disease outcome is discussed.
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