Pancreatic Stellate Cells in Chronic Pancreatitis

Total Page:16

File Type:pdf, Size:1020Kb

Pancreatic Stellate Cells in Chronic Pancreatitis 0 Pancreatic Stellate Cells in Chronic Pancreatitis Lu Yang September 2011 Thesis submitted for a degree of Master by Research Faculty of Medicine The University of New South Wales, Sydney, NSW, Australia i Certificate of Originality ‘I hereby declare that this submission is my own work and to the best of my knowledge it contains no materials previously published or written by another person, nor material which to a substantial extent has been accepted for the award of any other degree or diploma at UNSW or any other educational institution, except where due acknowledgement is made in the thesis. Any contribution made to the research by others, with whom I have worked at UNSW or elsewhere, is explicitly acknowledged in the thesis. I also declare that the intellectual content of this thesis is the product of my own work, except to the extent that assistance from others in the project’s design and conception or in style, presentation and linguistic expression is acknowledged.’ Signed……………………………………………………………… ii Acknowledgements I would like to express my gratitude to my masters’ supervisors Professor Minoti Apte, Dr Phoebe Phillips and Professor Jeremy Wilson, for the opportunity to undertake a master project in the field of alcoholic pancreatitis and for their assistance, guidance and support throughout my candidature. Professor Minoti Apte is not only a scientist of superior quality but also a wonderful person who was always positive, patient and possesses great leadership qualities. Dr Phoebe Phillips has been a constant source of inspiration and provided me with precious intellectual and technical advice. Professor Jeremy Wilson, Head of South Western Sydney Clinical School, despite his many commitments, provided invaluable assistance, encourage, advice and support throughout my studies and during the preparation of this thesis. I thank all past and present research staff of the Pancreatic Research Group (A/Professor Ron Pirola, Zhihong Xu, Xuguo Zhang, Eva Fiala-Beer, Jie Liu, Janet Youkhana and Narada Kiriella) for their support and their help with the isolation of pancreatic stellate cells. Thank you to Dr Alain Vonlaufen for his assistance and advice during my masters candidate and his patience in training me with several lab techniques. I would like to thank my parents for all their understanding, encouragement and patience through out my studies. Finally, I would like to offer my husband Jin a special thankyou for his love, understanding and unconditional support during my studies. iii Publications ___________________________________________________________________ Publications in peer reviewed journals 1. Phillips PA, Yang L, Shulkes A, Vonlaufen A, Poljak A, Bustamante S, Warren A, Xu Z, Guilhaus M, Pirola R, Apte MV, Wilson JS. Pancreatic Stellate Cells Synthesize and Secrete Acetylcholine: A potential role in exocrine pancreatic secretion, Proc Natl Acad Sci U S A. 2010 Oct 5; 107(40):17397-402. 2. Vonlaufen A, Phillips PA, Yang L, Xu Z, Fiala-Beer E, Zhang X, Pirola RC, Wilson JS, Apte MV. Isolation of quiescent normal human pancreatic stellate cells (NhPSCs): a promising in vitro tool for studies of hPSC biology, Pancreatology. 2010; 10(4):434-43. 3. Xu Z, Vonlaufen A, Phillips PA, Fiala-Beer E, Zhang X, Yang L, Biankin AV, Goldstein D, Pirola RC, Wilson JS, Apte MV. Role of pancreatic stellate cells in pancreatic cancer metastasis, Am J Pathol. 2010 Nov; 177(5):2585-96. 4. Vonlaufen A, Phillips PA, Xu Z, Zhang X, Yang L, Pirola RC, Wilson JS, Apte MV. Withdrawal of alcohol promotes regression while continued alcohol intake promotes persistence of LPS-induced pancreatic injury in alcohol-fed rats, Gut. 2011 Feb; 60(2):238-46. iv Abstracts 1. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS and Apte MV. Collagen-I Increases the Expression of Transgelin and Lumican (regulators of cell migration) by Activated Pancreatic Stellate Cells. *These authors contributed equally to the study. Awarded Best Poster Prize at the the Joint Conference of the International Association of Pancreatology and the Indian Pancreas Club, Cochin, 2011 2. Fiala-Beer E, Xu Z, Phillips PA, Yang L, Goldstein D, Pirola R, Wilson JS and Apte M. Role of pancreatic stellate cells in pancreatic cancer: the urokinase plasminogen activator system. Role of pancreatic stellate cells in pancreatic cancer: the urokinase plasminogen activator system. Oral presentation in the plenary session at the Joint Conference of the International Association of Pancreatology and the Indian Pancreas Club, Cochin, 2011. 3. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS and Apte MV. Collagen-I Increases the Expression of Transgelin and Lumican (regulators of cell migration) by Activated Pancreatic Stellate Cells. *These authors contributed equally to the study. Awarded in the Poster of Merit competition and won postgraduate student travel award in the annual scientific meeting of Australia Gastroenterology Week Oct. 2010 4. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS and Apte MV. Collagen-I Increases the Expression of Transgelin and Lumican (regulators of cell migration) by Activated Pancreatic Stellate Cells. *These authors contributed equally to the study. Oral presentation at 5th Australian Health and Medical Research Congress (AH&MRC) Nov.2010 5. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS, and Apte MV. *These authors contributed equally to the study. Collagen-1 increases the expression of transgelin and lumican (regulators of cell migration) by activated pancreatic stellate cells. Pancreas, 2010; 39(8):p1358. Poster presentation at the annual American Pancreatic Association meeting, 2010. 6. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS and Apte MV. Collagen-I Increases the Expression of Transgelin and Lumican (regulators of cell migration) by Activated Pancreatic Stellate Cells. v *These authors contributed equally to the study. Poster presentation at European Pancreatic Club Meeting Jun, Sweden, 2010 7. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS, and Apte MV. *These authors contributed equally to the study. Collagen-1 increases the expression of transgelin and lumican (regulators of cell migration) by activated pancreatic stellate cells. Oral presentation at the annual Ingham’s Research Showcase, 2010 8. Fiala-Beer E, Xu Z, Phillips PA, Yang L, Goldstein D, Pirola R, Wilson JS and Apte M. Role of pancreatic stellate cells in pancreatic cancer: the urokinase plasminogen activator system. Oral presentation at the annual Australasian Pancreatic Club meeting, 2010. 9. Xu Z, Phillips PA, Vonlaufen A, Fiala-beer E, Yang L, Zhang X, Biankin AV, Goldstein D, Pirola RC, Wilson JS, Apte MV. Normal pancreatic stellate cells facilitate pancreatic cancer progression, exhibit transendothelial migration and accompany cancer cells to distant metastatic sites. Oral presentation at the annual Ingham’s Research Showcase, 2010. 10. Fiala-Beer E, Xu Z, Phillips PA, Yang L, Goldstein D, Pirola R, Wilson JS and Apte M. Role of pancreatic stellate cells in pancreatic cancer: the urokinase plasminogen activator system. Oral presentation at the annual Ingham’s Research Showcase, 2010. 11. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS and Apte MV. Gene expression profiling of rat pancreatic stellate cells. *These authors contributed equally to the study. Poster presentation at American Pancreatic Association and Japan Pancreas Society, November 2009, Hawaii, USA. 12. Yang L*, Phillips PA*, Vonlaufen A, Kaplan W, Cowley M, Pirola R, Wilson JS and Apte MV. Gene expression profiling of rat pancreatic stellate cells. *These authors contributed equally to the study. Oral presentation at Australia Pancreatic Club, August 2009, Australia. 13. Yang L, Phillips PA, Vonlaufen A, Xu Z, Zhang X, Fiala-Beer E, Pirola RC, Wilson JS. Apte MV. Alcohol and cytokines stimulate pancreatic stellate cell activation. Poster presentation at 4th Australian Health & Medical Research vi Congress, 16-21 November 2008, Brisbane Convention & Exhibition Centre, Queensland, Australia. Won Travel Award. 14. Phillips PA, Yang L, Poljak A, Bustamante S, Shulkes A, Vonlaufen A, Xu Z, Guilhaus M, Pirola R, Apte MV, J. Wilson. Pancreatic stellate cells synthesise and secret acetylcholine: a potential role in enzyme secretion. Oral presentation (P.A. Phillips) European Pancreatic Club Meeting in Szeged July 2009 15. Phillips PA, Yang L, Vonlaufen A, Xu Z, Biankin A, Goldstein D, Pirola R, Wilson JS, Apte MV. Heat shock proteins are induced during pancreatic stellate cell activation in pancreatic cancer. European Pancreatic Club Meeting in Szeged July 2009 16. Phillips PA, Chow E, Kaplan W, Cowley M, Vonlaufen A, Yang L, Xu Z, Biankin A, Goldstein D, Pirola R, Wilson JS, Apte MV. Gene expression profiling of human pancreatic stellate cells and their roles in pancreatic cancer progression. European Pancreatic Club Meeting in Szeged July 2009 17. Phillips PA, Yang L, Vonlaufen A, Xu Z, Biankin A, Goldstein D, Pirola R, Wilson JS and Apte MV. Heat shock proteins are induced during pancreatic stellate cell activation in pancreatic cancer. Poster presentation at American Association for Cancer Research Annual Meeting in Denver, Apr. 2009 18. Phillips PA, Chow E, Vonlaufen A, Xu Z, Yang L, Biankin A, Goldstein D, Pirola R, Wilson JS, and Apte MV. Gene Expression Profiling of Human Pancreatic Stellate Cells and their Roles in Pancreatic Cancer Progression. Poster presentation at American Association for Cancer Research Annual Meeting in Denver, Apr. 2009 19. Phillips PA, Yang L, Vonlaufen A, Xu Z, Pirola R, Wilson JS and Apte MV. Heat shock proteins are differentially regulated during pancreatic stellate cell activation. Oral presentation (Phillips PA) at the annual meeting of American Pancreatic Association, 6-7 November 2008, Chicago IL, USA. (Pancreas, November 2008, Volume 37, Number 4, Page 459-505.) 20. Phillips PA, Yang L, Vonlaufen A, Xu Z, Pirola R, Wilson JSS and Apte MV. Heat shock proteins are differentially regulated during pancreatic stellate cell activation.
Recommended publications
  • Primary Outgrowth Cultures Are a Reliable Source of Human Pancreatic
    Laboratory Investigation (2015) 95, 1331–1340 © 2015 USCAP, Inc All rights reserved 0023-6837/15 Primary outgrowth cultures are a reliable source of human pancreatic stellate cells Song Han1,4, Daniel Delitto1,4, Dongyu Zhang1, Heather L Sorenson2, George A Sarosi1,3, Ryan M Thomas1,3, Kevin E Behrns1, Shannon M Wallet2, Jose G Trevino1 and Steven J Hughes1 Recent advances demonstrate a critical yet poorly understood role for the pancreatic stellate cell (PSC) in the pathogenesis of chronic pancreatitis (CP) and pancreatic cancer (PC). Progress in this area has been hampered by the availability, fidelity, and/or reliability of in vitro models of PSCs. We examined whether outgrowth cultures from human surgical specimens exhibited reproducible phenotypic and functional characteristics of PSCs. PSCs were cultured from surgical specimens of healthy pancreas, CP and PC. Growth dynamics, phenotypic characteristics, soluble mediator secretion profiles and co-culture with PC cells both in vitro and in vivo were assessed. Forty-seven primary cultures were established from 52 attempts, demonstrating universal α-smooth muscle actin and glial fibrillary acidic protein but negligible epithelial surface antigen expression. Modification of culture conditions consistently led to cytoplasmic lipid accumulation, suggesting induction of a quiescent phenotype. Secretion of growth factors, chemokines and cytokines did not significantly differ between donor pathologies, but did evolve over time in culture. Co-culture of PSCs with established PC cell lines resulted in significant changes in levels of multiple secreted mediators. Primary PSCs co-inoculated with PC cells in a xenograft model led to augmented tumor growth and metastasis. Therefore, regardless of donor pathology, outgrowth cultures produce PSCs that demonstrate consistent growth and protein secretion properties.
    [Show full text]
  • Nomina Histologica Veterinaria, First Edition
    NOMINA HISTOLOGICA VETERINARIA Submitted by the International Committee on Veterinary Histological Nomenclature (ICVHN) to the World Association of Veterinary Anatomists Published on the website of the World Association of Veterinary Anatomists www.wava-amav.org 2017 CONTENTS Introduction i Principles of term construction in N.H.V. iii Cytologia – Cytology 1 Textus epithelialis – Epithelial tissue 10 Textus connectivus – Connective tissue 13 Sanguis et Lympha – Blood and Lymph 17 Textus muscularis – Muscle tissue 19 Textus nervosus – Nerve tissue 20 Splanchnologia – Viscera 23 Systema digestorium – Digestive system 24 Systema respiratorium – Respiratory system 32 Systema urinarium – Urinary system 35 Organa genitalia masculina – Male genital system 38 Organa genitalia feminina – Female genital system 42 Systema endocrinum – Endocrine system 45 Systema cardiovasculare et lymphaticum [Angiologia] – Cardiovascular and lymphatic system 47 Systema nervosum – Nervous system 52 Receptores sensorii et Organa sensuum – Sensory receptors and Sense organs 58 Integumentum – Integument 64 INTRODUCTION The preparations leading to the publication of the present first edition of the Nomina Histologica Veterinaria has a long history spanning more than 50 years. Under the auspices of the World Association of Veterinary Anatomists (W.A.V.A.), the International Committee on Veterinary Anatomical Nomenclature (I.C.V.A.N.) appointed in Giessen, 1965, a Subcommittee on Histology and Embryology which started a working relation with the Subcommittee on Histology of the former International Anatomical Nomenclature Committee. In Mexico City, 1971, this Subcommittee presented a document entitled Nomina Histologica Veterinaria: A Working Draft as a basis for the continued work of the newly-appointed Subcommittee on Histological Nomenclature. This resulted in the editing of the Nomina Histologica Veterinaria: A Working Draft II (Toulouse, 1974), followed by preparations for publication of a Nomina Histologica Veterinaria.
    [Show full text]
  • Pancreatic Stellate Cells in Health and Disease
    Pancreatic Stellate Cells in Health and Disease Alpha R. Mekapogu, Srinivasa P. Pothula, Romano C. Pirola, Jeremy S. Wilson, Minoti V. Apte Pancreatic Research Group, South Western Sydney Clinical School, Faculty of Medicine, The University of New South Wales, Ingham Institute for Applied Medical Research, Sydney, Australia e-mail: [email protected]. Version 1.0, November 17th, 2020 [DOI: 10.3998/panc.2020.08] Abstract the pancreas – chronic pancreatitis and pancreatic cancer. In health, the process of fibrogenesis is a Pancreatic stellate cells (PSCs) are resident cells well-regulated dynamic process which is of the pancreas, found in both the exocrine and necessary for regular turnover of extracellular endocrine parts of the gland. Over the two decades matrix (ECM) that allows remodeling and since these cells were first isolated and cultured maintenance of normal pancreatic architecture. from rodent and human pancreas, research in this However, during injury, the equilibrium between area has progressed at a rapid rate. Our production and degradation of fibrous tissue is knowledge of PSC biology in both health and disrupted leading to excessive deposition of disease has increased significantly. In health, extracellular matrix proteins resulting in fibrosis. PSCs are known to not only play a role in regulating normal extracellular matrix turnover but Pancreatic stellate cells (PSCs) are now are also thought to have progenitor cell functions considered to be the key contributors of pancreatic as well as a role in innate immunity. The critical fibrosis (5, 11, 135). These cells were first roles of PSCs in inflammatory as well as malignant observed by Watari et al.
    [Show full text]
  • Editorial Udc: 615:378 Doi: 10.18413/2313-8971-2017-3-4-3
    Pokrovskii M.V., Avtina T.V., Zakharova E.V., Belousova Yulia V. Oswald Schmiedeberg – the “father” of experimental pharmacology. Research Result: Pharmacology and Clinical 3 Pharmacology. 2017;3(4):3-19. EDITORIAL Rus. UDC: 615:378 DOI: 10.18413/2313-8971-2017-3-4-3-19 Mikhail V. Pokrovskii1 Tatyana V. Avtina T. OSWALD SCHMIEDEBERG –THE “FATHER” OF Elena V. Zakharova EXPERIMENTAL PHARMACOLOGY Yulia. V. Belousova Belgorod State National Research University, 85 Pobedy St., Belgorod, 308015 Russia Corresponding author, 1e-mail: [email protected] “Our tribute to the memory of the Teachers and those who were pioneers of pharmacology is an invaluable gift to our descendants” Abstract Biography. Oswald Schmiedeberg (1838-1921) was a son of a bailiff and a maid of honour, the eldest of the six children in the family. He was born and educated in the Russian Empire. Scientific activity. All his life he was completely devoted to science, making experimental pharmacology an independent scientific discipline, and was able to bring it to the international level. O. Schmiedeberg studied the action of muscarine and nicotine, digitoxin, hypnotics and analeptics. He was the first to introduce the concept of ―pharmacodynamics‖ and ―pharmacokinetics‖ of a drug. With his participation, the world‘s first pharmacological journal was founded, which is still published today. Science school. Working for many years at the University of Strasbourg, Schmiedeberg managed to educate about 120 students – professors from 20 countries of the world, many of whom later founded experimental pharmacology in their countries, for example, Abel in the USA, and N.P. Kravkov in Russia.
    [Show full text]
  • University of Southampton Research Repository Eprints Soton
    University of Southampton Research Repository ePrints Soton Copyright © and Moral Rights for this thesis are retained by the author and/or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder/s. The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given e.g. AUTHOR (year of submission) "Full thesis title", University of Southampton, name of the University School or Department, PhD Thesis, pagination http://eprints.soton.ac.uk University of Southampton Faculty of Medicine, Health and Biological Sciences Pancreatic Research Group An investigation into soluble growth factors of TIMP-1, IGF-1 and Insulin on Pancreatic stellate cell survival Dr Manish Patel DM Thesis February 2014 University of Southampton An investigation into soluble growth factors of TIMP-1, IGF-1 and Insulin on Pancreatic stellate cell survival Faculty of Medicine, Health and Biological Sciences During pancreatic injury, the pancreatic stellate cell(PSC) become activated to a myofibroblast-like phenotype, proliferate and are known to be the major source of matrix which characterise pancreatic fibrosis in chronic pancreatitis and pancreatic cancer. Activated PSC also express matrix degrading metalloproteinases(MMPs) and their tissue inhibitors(TIMPs). Previous work has demonstrated that during spontaneous recovery from experimental liver fibrosis after 4 weeks of carbon tetrachloride injections, there is a fall in the expression of TIMP-1, a loss of the hepatic stellate cells (HSCs) by apoptosis, and an increase in liver collagenolytic activity with the return of the liver to a near normal histology.
    [Show full text]
  • Tumor Microenvironment Participates in Metastasis of Pancreatic Cancer Bo Ren, Ming Cui, Gang Yang, Huanyu Wang, Mengyu Feng, Lei You*† and Yupei Zhao*†
    Ren et al. Molecular Cancer (2018) 17:108 https://doi.org/10.1186/s12943-018-0858-1 REVIEW Open Access Tumor microenvironment participates in metastasis of pancreatic cancer Bo Ren, Ming Cui, Gang Yang, Huanyu Wang, Mengyu Feng, Lei You*† and Yupei Zhao*† Abstract Pancreatic cancer is a deadly disease with high mortality due to difficulties in its early diagnosis and metastasis. The tumor microenvironment induced by interactions between pancreatic epithelial/cancer cells and stromal cells is critical for pancreatic cancer progression and has been implicated in the failure of chemotherapy, radiation therapy and immunotherapy. Microenvironment formation requires interactions between pancreatic cancer cells and stromal cells. Components of the pancreatic cancer microenvironment that contribute to desmoplasia and immunosuppression are associated with poor patient prognosis. These components can facilitate desmoplasia and immunosuppression in primary and metastatic sites or can promote metastasis by stimulating angiogenesis/lymphangiogenesis, epithelial- mesenchymal transition, invasion/migration, and pre-metastatic niche formation. Some molecules participate in both microenvironment formation and metastasis. In this review, we focus on the mechanisms of pancreatic cancer microenvironment formation and discuss how the pancreatic cancer microenvironment participates in metastasis, representing a potential target for combination therapy to enhance overall survival. Keywords: Pancreatic cancer, Tumor microenvironment, Desmoplasia, Immunosuppression,
    [Show full text]
  • Pancreatic Stellate Cells Produce Acetylcholine and May Play a Role in Pancreatic Exocrine Secretion
    Pancreatic stellate cells produce acetylcholine and may play a role in pancreatic exocrine secretion Phoebe A. Phillipsa,1, Lu Yanga, Arthur Shulkesb, Alain Vonlaufena,c, Anne Poljakd,e, Sonia Bustamanted, Alessandra Warrenf, Zhihong Xua, Michael Guilhausd, Romano Pirolaa, Minoti V. Aptea,2, and Jeremy S. Wilsona,2 aPancreatic Research Group, South Western Sydney Clinical School and School of Medical Sciences/Pathology, University of New South Wales, Sydney 2052, Australia; bDepartment of Surgery, University of Melbourne, Melbourne 3084, Australia; cDepartment of Gastroenterology, University of Geneva, 1211 Geneva 14, Switzerland; dBioanalytical Mass Spectrometry Facility and eSchool of Medical Sciences, University of New South Wales, Sydney 2052, Australia; and fBiogerontology Group, Australian and New Zealand Army Corps Research Institute, Sydney 2139, Australia Edited* by Tomas G. M. Hökfelt, Karolinska Institutet, Stockholm, Sweden, and approved August 24, 2010 (received for review January 11, 2010) The pancreatic secretagogue cholecystokinin (CCK) is widely CCK are mediated via two related receptors: CCK1 and CCK2 (6). thought to stimulate enzyme secretion by acinar cells indirectly via These receptors have 50% homology and are coupled to the same activation of the vagus nerve. We postulate an alternative pathway basic intracellular signaling pathways via the activation of guanine- for CCK-induced pancreatic secretion. We hypothesize that neurally nucleotide binding proteins (G proteins). related pancreatic stellate cells (PSCs; located in close proximity to Whether CCK acts directly on human pancreatic acinar cells to the basolateral aspect of acinar cells) play a regulatory role in stimulate digestive enzyme secretion has been a matter of some pancreatic secretion by serving as an intermediate target for CCK debate in the literature.
    [Show full text]
  • Normal Pancreatic Function 1. What Are the Functions of the Pancreas?
    Normal Pancreatic Function Stephen J. Pandol Cedars-Sinai Medical Center and Department of Veterans Affairs Los Angeles, California USA [email protected] Version 1.0, June 13, 2015 [DOI: 10.3998/panc.2015.17] 1. What are the functions of the This chapter presents processes underlying the functions of the exocrine pancreas with pancreas? references to how specific abnormalities of the The pancreas has both exocrine and endocrine pancreas can lead to disease states. function. This chapter is devoted to the exocrine functions of the pancreas. The exocrine function 2. Where is the pancreas located? is devoted to secretion of digestive enzymes, ions and water into the intestine of the gastrointestinal The illustration in Figure 1 demonstrates the (GI) tract. The digestive enzymes are necessary anatomical relationships between the pancreas for converting a meal into molecules that can be and organs surrounding it in the abdomen. The absorbed across the surface lining of the GI tract regions of the pancreas are the head, body, tail into the body. Of note, there are digestive and uncinate process (Figure 2). The distal end enzymes secreted by our salivary glands, of the common bile duct passes through the head stomach and surface epithelium of the GI tract of the pancreas and joins the pancreatic duct as it that also contribute to digestion of a meal. enters the intestine (Figure 2). Because the bile However, the exocrine pancreas is necessary for duct passes through the pancreas before entering most of the digestion of a meal and without it the intestine, diseases of the pancreas such as a there is a substantial loss of digestion that results cancer at the head of the pancreas or swelling in malnutrition.
    [Show full text]
  • Hepatic Macrophage Responses in Inflammation, a Function Of
    REVIEW published: 09 June 2021 doi: 10.3389/fimmu.2021.690813 Hepatic Macrophage Responses in Inflammation, a Function of Plasticity, Heterogeneity or Both? Christian Zwicker 1,2†, Anna Bujko 1,2† and Charlotte L. Scott 1,2,3* 1 Laboratory of Myeloid Cell Biology in Tissue Damage and Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium, 2 Department of Biomedical Molecular Biology, Faculty of Science, Ghent University, Ghent, Belgium, 3 Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick, Ireland With the increasing availability and accessibility of single cell technologies, much attention has been given to delineating the specific populations of cells present in any given tissue. In recent years, hepatic macrophage heterogeneity has also begun to be examined using these strategies. While previously any macrophage in the liver was considered to be a Kupffer cell (KC), several studies have recently revealed the presence of distinct subsets of Edited by: hepatic macrophages, including those distinct from KCs both under homeostatic and Ioannis Kourtzelis, non-homeostatic conditions. This heterogeneity has brought the concept of macrophage University of York, United Kingdom plasticity into question. Are KCs really as plastic as once thought, being capable of Reviewed by: responding efficiently and specifically to any given stimuli? Or are the differential responses Ian Nicholas Crispe, University of Washington Tacoma, observed from hepatic macrophages in distinct settings due to the presence of multiple United States subsets of these cells? With these questions in mind, here we examine what is currently Takayoshi Suganami, understood regarding hepatic macrophage heterogeneity in mouse and human and Nagoya University, Japan *Correspondence: examine the role of heterogeneity vs plasticity in regards to hepatic macrophage Charlotte L.
    [Show full text]
  • Epigenetic Mechanisms of Pancreatobiliary Fibrosis Sayed Obaidullah Aseem1,2 Robert C
    Curr Treat Options Gastro (2019) 17:342–356 DOI 10.1007/s11938-019-00239-0 Pancreas (V Chandrasekhara, Section Editor) Epigenetic Mechanisms of Pancreatobiliary Fibrosis Sayed Obaidullah Aseem1,2 Robert C. Huebert1,2,3,* Address 1Division of Gastroenterology and Hepatology, Rochester, FL, USA *,2Gastroenterology Research Unit, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA Email: [email protected] 3Mayo Clinic Foundation, Rochester, MN, USA Published online: 12 July 2019 * Springer Science+Business Media, LLC, part of Springer Nature 2019 Keywords Pancreas I Biliary I Pancreatic stellate cell I Cholangiocytes I Epigenetics I Fibrosis Abstract Purpose of review The goal of this manuscript is to review the current literature related to fibrogenesis in the pancreatobiliary system and how this process contributes to pancreatic and biliary diseases. In particular, we seek to define the current state of knowledge regarding the epigenetic mechanisms that govern and regulate tissue fibrosis in these organs. A better understanding of these underlying molecular events will set the stage for future epigenetic therapeutics. Recent findings We highlight the significant advances that have been made in defining the pathogenesis of pancreatobiliary fibrosis as it relates to chronic pancreatitis, pancreatic cancer, and the fibro-obliterative cholangiopathies. We also review the cell types involved as well as concepts related to epithelial-mesenchymal crosstalk. Furthermore, we outline important signaling pathways (e.g., TGFβ) and diverse epigenetic processes (i.e., DNA methylation, non-coding RNAs, histone modifications, and 3D chromatin remodeling) that regulate fibrogenic gene networks in these conditions. Summary We review a growing body of scientific evidence linking epigenetic regulatory events to fibrotic disease states in the pancreas and biliary system.
    [Show full text]
  • 26 April 2010 TE Prepublication Page 1 Nomina Generalia General Terms
    26 April 2010 TE PrePublication Page 1 Nomina generalia General terms E1.0.0.0.0.0.1 Modus reproductionis Reproductive mode E1.0.0.0.0.0.2 Reproductio sexualis Sexual reproduction E1.0.0.0.0.0.3 Viviparitas Viviparity E1.0.0.0.0.0.4 Heterogamia Heterogamy E1.0.0.0.0.0.5 Endogamia Endogamy E1.0.0.0.0.0.6 Sequentia reproductionis Reproductive sequence E1.0.0.0.0.0.7 Ovulatio Ovulation E1.0.0.0.0.0.8 Erectio Erection E1.0.0.0.0.0.9 Coitus Coitus; Sexual intercourse E1.0.0.0.0.0.10 Ejaculatio1 Ejaculation E1.0.0.0.0.0.11 Emissio Emission E1.0.0.0.0.0.12 Ejaculatio vera Ejaculation proper E1.0.0.0.0.0.13 Semen Semen; Ejaculate E1.0.0.0.0.0.14 Inseminatio Insemination E1.0.0.0.0.0.15 Fertilisatio Fertilization E1.0.0.0.0.0.16 Fecundatio Fecundation; Impregnation E1.0.0.0.0.0.17 Superfecundatio Superfecundation E1.0.0.0.0.0.18 Superimpregnatio Superimpregnation E1.0.0.0.0.0.19 Superfetatio Superfetation E1.0.0.0.0.0.20 Ontogenesis Ontogeny E1.0.0.0.0.0.21 Ontogenesis praenatalis Prenatal ontogeny E1.0.0.0.0.0.22 Tempus praenatale; Tempus gestationis Prenatal period; Gestation period E1.0.0.0.0.0.23 Vita praenatalis Prenatal life E1.0.0.0.0.0.24 Vita intrauterina Intra-uterine life E1.0.0.0.0.0.25 Embryogenesis2 Embryogenesis; Embryogeny E1.0.0.0.0.0.26 Fetogenesis3 Fetogenesis E1.0.0.0.0.0.27 Tempus natale Birth period E1.0.0.0.0.0.28 Ontogenesis postnatalis Postnatal ontogeny E1.0.0.0.0.0.29 Vita postnatalis Postnatal life E1.0.1.0.0.0.1 Mensurae embryonicae et fetales4 Embryonic and fetal measurements E1.0.1.0.0.0.2 Aetas a fecundatione5 Fertilization
    [Show full text]
  • Hypoxia Increases Β-Cell Death by Activating Pancreatic Stellate Cells Within the Islet
    Original Article Basic Research Diabetes Metab J 2020;44:919-927 https://doi.org/10.4093/dmj.2019.0181 pISSN 2233-6079 · eISSN 2233-6087 DIABETES & METABOLISM JOURNAL Hypoxia Increases β-Cell Death by Activating Pancreatic Stellate Cells within the Islet Jong Jin Kim, Esder Lee, Gyeong Ryul Ryu, Seung-Hyun Ko, Yu-Bae Ahn, Ki-Ho Song Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea Background: Hypoxia can occur in pancreatic islets in type 2 diabetes mellitus. Pancreatic stellate cells (PSCs) are activated dur- ing hypoxia. Here we aimed to investigate whether PSCs within the islet are also activated in hypoxia, causing β-cell injury. Methods: Islet and primary PSCs were isolated from Sprague Dawley rats, and cultured in normoxia (21% O2) or hypoxia (1% O2). The expression of α-smooth muscle actin (α-SMA), as measured by immunostaining and Western blotting, was used as a marker of PSC activation. Conditioned media (hypoxia-CM) were obtained from PSCs cultured in hypoxia. Results: Islets and PSCs cultured in hypoxia exhibited higher expressions of α-SMA than did those cultured in normoxia. Hypoxia in- creased the production of reactive oxygen species. The addition of N-acetyl-L-cysteine, an antioxidant, attenuated the hypoxia-in- duced PSC activation in islets and PSCs. Islets cultured in hypoxia-CM showed a decrease in cell viability and an increase in apoptosis. Conclusion: PSCs within the islet are activated in hypoxia through oxidative stress and promote islet cell death, suggesting that hypoxia-induced PSC activation may contribute to β-cell loss in type 2 diabetes mellitus.
    [Show full text]