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Novak I, Yu H, Magni L, Deshar G. Purinergic Signaling in Pancreas-From Physiology to Therapeutic Strategies in Pancreatic Cancer. Int J Mol Sci 2020; 21:E8781. [PMID: 33233631 PMCID: PMC7699721 DOI: 10.3390/ijms21228781] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023] Open
Abstract
The purinergic signaling has an important role in regulating pancreatic exocrine secretion. The exocrine pancreas is also a site of one of the most serious cancer forms, the pancreatic ductal adenocarcinoma (PDAC). Here, we explore how the network of purinergic and adenosine receptors, as well as ecto-nucleotidases regulate normal pancreatic cells and various cells within the pancreatic tumor microenvironment. In particular, we focus on the P2X7 receptor, P2Y2 and P2Y12 receptors, as well as A2 receptors and ecto-nucleotidases CD39 and CD73. Recent studies indicate that targeting one or more of these candidates could present new therapeutic approaches to treat pancreatic cancer. In pancreatic cancer, as much as possible of normal pancreatic function should be preserved, and therefore physiology of purinergic signaling in pancreas needs to be considered.
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MESH Headings
- 5'-Nucleotidase/genetics
- 5'-Nucleotidase/immunology
- Animals
- Antibodies, Monoclonal/therapeutic use
- Antineoplastic Agents, Immunological/therapeutic use
- Apyrase/genetics
- Apyrase/immunology
- Carcinoma, Pancreatic Ductal/drug therapy
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/immunology
- Carcinoma, Pancreatic Ductal/pathology
- Clinical Trials as Topic
- GPI-Linked Proteins/genetics
- GPI-Linked Proteins/immunology
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Expression Regulation, Neoplastic/immunology
- Humans
- Immunotherapy/methods
- Pancreas/drug effects
- Pancreas/immunology
- Pancreas/pathology
- Pancreatic Neoplasms/drug therapy
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/immunology
- Pancreatic Neoplasms/pathology
- Pancreatic Stellate Cells/drug effects
- Pancreatic Stellate Cells/immunology
- Pancreatic Stellate Cells/pathology
- Receptors, Adenosine A2/genetics
- Receptors, Adenosine A2/immunology
- Receptors, Purinergic P2X7/genetics
- Receptors, Purinergic P2X7/immunology
- Receptors, Purinergic P2Y12/genetics
- Receptors, Purinergic P2Y12/immunology
- Receptors, Purinergic P2Y2/genetics
- Receptors, Purinergic P2Y2/immunology
- Signal Transduction/genetics
- Signal Transduction/immunology
- Tumor Microenvironment/drug effects
- Tumor Microenvironment/genetics
- Tumor Microenvironment/immunology
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Affiliation(s)
- Ivana Novak
- Section for Cell Biology and Physiology, Department of Biology, University of Copenhagen, 2100 Copenhagen Ø, Denmark; (H.Y.); (L.M.); (G.D.)
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Li S, Hao G, Xu Y, Wang N, Li J, Geng X, Sun J. Functional characterization of purinergic P2Y 2 and P2Y 12 receptors involved in Japanese flounder (Paralichthys olivaceus) innate immune responses. Fish Shellfish Immunol 2018; 75:208-215. [PMID: 29432865 DOI: 10.1016/j.fsi.2018.02.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/27/2018] [Accepted: 02/08/2018] [Indexed: 06/08/2023]
Abstract
G-protein-coupled P2Y receptors activated by extracellular nucleotides play important roles under different physiological and pathophysiological conditions in mammals. To investigate the immunological relevance of P2Y receptors in fish, we identified and characterized the P2Y2 and P2Y12 receptors in Japanese flounder Paralichthys olivaceus. The P. olivaceus P2Y2 and P2Y12 receptors harbor seven transmembrane domains but share only 24% sequence identity. Real-time PCR analysis revealed the constitutive but unequal mRNA expression pattern of P2Y2R and P2Y12R in normal Japanese flounder tissues with the dominant expression of P2Y2R in head kidney and blood and P2Y12R in hepatopancreas. In addition, the expression of P2Y2 and P2Y12 receptors was markedly modulated by PAMPs stimulation and Edwardsiella tarda infection. Furthermore, blockage of P2Y12R potently increased ADP-activated pro-inflammatory cytokine IL-1beta gene expression in the head kidney macrophages (HKMs). Moreover, inhibition of P2Y2 and P2Y12 receptor activity with their respective potent antagonists significantly altered some of the LPS-induced pro-inflammatory cytokine gene expression in the HKMs. However, blockade of P2Y12R did not affect the poly(I:C)-induced pro-inflammatory cytokine gene expression examined in the HKMs. Collectively, we have for the first time reported the role of purinergic P2Y2 and P2Y12 receptors in fish innate immunity. Our findings have also addressed the importance of extracellular ATP and its metabolites in fish innate immune responses.
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Affiliation(s)
- Shuo Li
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China.
| | - Gaixiang Hao
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Yaqi Xu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Nan Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Jiafang Li
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China
| | - Xuyun Geng
- Tianjin Center for Control and Prevention of Aquatic Animal Infectious Disease, 442 South Jiefang Road, Hexi District, Tianjin 300221, China
| | - Jinsheng Sun
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, 393 West Binshui Road, Xiqing District, Tianjin 300387, China.
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