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Goode RA, Hum JM, Kalwat MA. Therapeutic Strategies Targeting Pancreatic Islet β-Cell Proliferation, Regeneration, and Replacement. Endocrinology 2022; 164:6836713. [PMID: 36412119 PMCID: PMC9923807 DOI: 10.1210/endocr/bqac193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022]
Abstract
Diabetes results from insufficient insulin production by pancreatic islet β-cells or a loss of β-cells themselves. Restoration of regulated insulin production is a predominant goal of translational diabetes research. Here, we provide a brief overview of recent advances in the fields of β-cell proliferation, regeneration, and replacement. The discovery of therapeutic targets and associated small molecules has been enabled by improved understanding of β-cell development and cell cycle regulation, as well as advanced high-throughput screening methodologies. Important findings in β-cell transdifferentiation, neogenesis, and stem cell differentiation have nucleated multiple promising therapeutic strategies. In particular, clinical trials are underway using in vitro-generated β-like cells from human pluripotent stem cells. Significant challenges remain for each of these strategies, but continued support for efforts in these research areas will be critical for the generation of distinct diabetes therapies.
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Affiliation(s)
- Roy A Goode
- Division of Biomedical Sciences, College of Osteopathic Medicine, Marian University, Indianapolis, IN, USA
| | - Julia M Hum
- Division of Biomedical Sciences, College of Osteopathic Medicine, Marian University, Indianapolis, IN, USA
| | - Michael A Kalwat
- Correspondence: Michael A. Kalwat, PhD, Lilly Diabetes Center of Excellence, Indiana Biosciences Research Institute, 1210 Waterway Blvd, Suite 2000, Indianapolis, IN 46202, USA. or
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2
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Ji Z, Lu M, Xie H, Yuan H, Chen Q. β cell regeneration and novel strategies for treatment of diabetes (Review). Biomed Rep 2022; 17:72. [DOI: 10.3892/br.2022.1555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 03/14/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Zengyang Ji
- Department of Endocrinology, Changxing County Hospital of Traditional Chinese Medicine, Huzhou, Zhejiang 313199, P.R. China
| | - Min Lu
- Department of Endocrinology, Changxing County Hospital of Traditional Chinese Medicine, Huzhou, Zhejiang 313199, P.R. China
| | - Huanhuan Xie
- Department of Endocrinology, Changxing County Hospital of Traditional Chinese Medicine, Huzhou, Zhejiang 313199, P.R. China
| | - Honggang Yuan
- Department of Endocrinology, Changxing County Hospital of Traditional Chinese Medicine, Huzhou, Zhejiang 313199, P.R. China
| | - Qing Chen
- Department of Endocrinology, Changxing County Hospital of Traditional Chinese Medicine, Huzhou, Zhejiang 313199, P.R. China
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3
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Maachi H, Ghislain J, Tremblay C, Poitout V. Pronounced proliferation of non-beta cells in response to beta-cell mitogens in isolated human islets of Langerhans. Sci Rep 2021; 11:11283. [PMID: 34050242 PMCID: PMC8163757 DOI: 10.1038/s41598-021-90643-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 05/06/2021] [Indexed: 11/09/2022] Open
Abstract
The potential to treat diabetes by increasing beta-cell mass is driving a major effort to identify beta-cell mitogens. Demonstration of mitogen activity in human beta cells is frequently performed in ex vivo assays. However, reported disparities in the efficacy of beta-cell mitogens led us to investigate the sources of this variability. We studied 35 male (23) and female (12) human islet batches covering a range of donor ages and BMI. Islets were kept intact or dispersed into single cells and cultured in the presence of harmine, glucose, or heparin-binding epidermal growth factor-like growth factor (HB-EGF), and subsequently analyzed by immunohistochemistry or flow cytometry. Proliferating cells were identified by double labeling with EdU and Ki67 and glucagon, c-peptide or Nkx6.1, and cytokeratin-19 to respectively label alpha, beta, and ductal cells. Harmine and HB-EGF stimulated human beta-cell proliferation, but the effect of glucose was dependent on the assay and the donor. Harmine potently stimulated alpha-cell proliferation and both harmine and HB-EGF increased proliferation of insulin- and glucagon-negative cells, including cytokeratin 19-positive cells. Given the abundance of non-beta cells in human islet preparations, our results suggest that assessment of beta-cell mitogens requires complementary approaches and rigorous identification of cell identity using multiple markers.
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Affiliation(s)
- Hasna Maachi
- Montreal Diabetes Research Center, CRCHUM, 900 rue St Denis, Montreal, QC, H2X 0A9, Canada.,Department of Pharmacology and Physiology, University of Montreal, Montreal, QC, Canada
| | - Julien Ghislain
- Montreal Diabetes Research Center, CRCHUM, 900 rue St Denis, Montreal, QC, H2X 0A9, Canada
| | - Caroline Tremblay
- Montreal Diabetes Research Center, CRCHUM, 900 rue St Denis, Montreal, QC, H2X 0A9, Canada
| | - Vincent Poitout
- Montreal Diabetes Research Center, CRCHUM, 900 rue St Denis, Montreal, QC, H2X 0A9, Canada. .,Department of Medicine, University of Montreal, Montreal, QC, Canada.
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4
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Maachi H, Fergusson G, Ethier M, Brill GN, Katz LS, Honig LB, Metukuri MR, Scott DK, Ghislain J, Poitout V. HB-EGF Signaling Is Required for Glucose-Induced Pancreatic β-Cell Proliferation in Rats. Diabetes 2020; 69:369-380. [PMID: 31882563 PMCID: PMC7034189 DOI: 10.2337/db19-0643] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 12/19/2019] [Indexed: 12/19/2022]
Abstract
The molecular mechanisms of β-cell compensation to metabolic stress are poorly understood. We previously observed that nutrient-induced β-cell proliferation in rats is dependent on epidermal growth factor receptor (EGFR) signaling. The aim of this study was to determine the role of the EGFR ligand heparin-binding EGF-like growth factor (HB-EGF) in the β-cell proliferative response to glucose, a β-cell mitogen and key regulator of β-cell mass in response to increased insulin demand. We show that exposure of isolated rat and human islets to HB-EGF stimulates β-cell proliferation. In rat islets, inhibition of EGFR or HB-EGF blocks the proliferative response not only to HB-EGF but also to glucose. Furthermore, knockdown of HB-EGF in rat islets blocks β-cell proliferation in response to glucose ex vivo and in vivo in transplanted glucose-infused rats. Mechanistically, we demonstrate that HB-EGF mRNA levels are increased in β-cells in response to glucose in a carbohydrate-response element-binding protein (ChREBP)-dependent manner. In addition, chromatin immunoprecipitation studies identified ChREBP binding sites in proximity to the HB-EGF gene. Finally, inhibition of Src family kinases, known to be involved in HB-EGF processing, abrogated glucose-induced β-cell proliferation. Our findings identify a novel glucose/HB-EGF/EGFR axis implicated in β-cell compensation to increased metabolic demand.
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Affiliation(s)
- Hasna Maachi
- Montreal Diabetes Research Center, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
- Department of Pharmacology and Physiology, University of Montreal, Montreal, Quebec, Canada
| | - Grace Fergusson
- Montreal Diabetes Research Center, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Melanie Ethier
- Montreal Diabetes Research Center, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Gabriel N Brill
- Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Liora S Katz
- Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Lee B Honig
- Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Donald K Scott
- Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Julien Ghislain
- Montreal Diabetes Research Center, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Vincent Poitout
- Montreal Diabetes Research Center, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
- Department of Medicine, University of Montreal, Montreal, Quebec, Canada
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5
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Xie X, Zu X, Liu F, Wang T, Wang X, Chen H, Liu K, Wang P, Liu F, Zheng Y, Bode AM, Dong Z, Kim DJ. Purpurogallin is a novel mitogen-activated protein kinase kinase 1/2 inhibitor that suppresses esophageal squamous cell carcinoma growth in vitro and in vivo. Mol Carcinog 2019; 58:1248-1259. [PMID: 31100197 DOI: 10.1002/mc.23007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 03/05/2019] [Accepted: 03/08/2019] [Indexed: 12/28/2022]
Abstract
Purpurogallin is a natural compound that is extracted from nutgalls and oak bark and it possesses antioxidant, anticancer, and anti-inflammatory properties. However, the anticancer capacity of purpurogallin and its molecular target have not been investigated in esophageal squamous cell carcinoma (ESCC). Herein, we report that purpurogallin suppresses ESCC cell growth by directly targeting the mitogen-activated protein kinase kinase 1/2 (MEK1/2) signaling pathway. We found that purpurogallin inhibits anchorage-dependent and -independent ESCC growth. The results of in vitro kinase assays and cell-based assays indicated that purpurogallin also strongly attenuates the extracellular signal-regulated kinase 1/2 (ERK1/2) signaling pathway and also directly binds to and inhibits MEK1 and MEK2 activity. Furthermore, purpurogallin contributed to S and G2 phase cell cycle arrest by reducing cyclin A2 and cyclin B1 expression and also induced apoptosis by activating poly (ADP ribose) polymerase (PARP). Notably, purpurogallin suppressed patient-derived ESCC tumor growth in an in vivo mouse model. These findings indicated that purpurogallin is a novel MEK1/2 inhibitor that could be useful for treating ESCC.
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Affiliation(s)
- Xiaomeng Xie
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China
| | - Xueyin Zu
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Feifei Liu
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China
| | - Ting Wang
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiangyu Wang
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China
| | - Hanyong Chen
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Kangdong Liu
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China.,The Affiliated Cancer Hospital, Zhengzhou University, Zhengzhou, Henan, China.,The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, Henan, China
| | - Penglei Wang
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Fangfang Liu
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Yan Zheng
- The Affiliated Cancer Hospital, Zhengzhou University, Zhengzhou, Henan, China
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, Minnesota
| | - Zigang Dong
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China.,The Hormel Institute, University of Minnesota, Austin, Minnesota.,The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, Henan, China.,International Joint Research Center of Cancer Chemoprevention, Zhengzhou, China
| | - Dong Joon Kim
- Department of Molecular and Cellular Biology, China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China.,Department of Pathophysiology, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
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Abstract
INTRODUCTION The etiology of diabetes is mainly attributed to insulin deficiency due to the lack of β cells (type 1), or to insulin resistance that eventually results in β cell dysfunction (type 2). Therefore, an ultimate cure for diabetes requires the ability to replace the lost insulin-secreting β cells. Strategies for regenerating β cells are under extensive investigation. AREAS COVERED Herein, the authors first summarize the mechanisms underlying embryonic β cell development and spontaneous adult β cell regeneration, which forms the basis for developing β cell regeneration strategies. Then the rationale and progress of each β cell regeneration strategy is reviewed. Current β cell regeneration strategies can be classified into two main categories: in vitro β cell regeneration using pluripotent stem cells and in vivo reprogramming of non-β cells into β cells. Each has its own advantages and disadvantages. EXPERT OPINION Regenerating β cells has shown its potential as a cure for the treatment of insulin-deficient diabetes. Much progress has been made, and β cell regeneration therapy is getting closer to a clinical reality. Nevertheless, more hurdles need to be overcome before any of the strategies suggested can be fully translated from bench to bedside.
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Affiliation(s)
- Shengli Dong
- Department of Biochemistry & Molecular Biology, Louisiana State University Health Science Center, New Orleans, Louisiana
| | - Hongju Wu
- Department of Medicine, Tulane University Health Science Center, New Orleans, Louisiana
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7
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Cui N, Lu H, Li M, Yan Q. PTPN21 protects PC12 cell against oxygen-glucose deprivation by activating cdk5 through ERK1/2 signaling pathway. Eur J Pharmacol 2017; 814:226-231. [DOI: 10.1016/j.ejphar.2017.08.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/15/2017] [Accepted: 08/15/2017] [Indexed: 12/29/2022]
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8
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Corritore E, Lee YS, Sokal EM, Lysy PA. β-cell replacement sources for type 1 diabetes: a focus on pancreatic ductal cells. Ther Adv Endocrinol Metab 2016; 7:182-99. [PMID: 27540464 PMCID: PMC4973405 DOI: 10.1177/2042018816652059] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Thorough research on the capacity of human islet transplantation to cure type 1 diabetes led to the achievement of 3- to 5-year-long insulin independence in nearly half of transplanted patients. Yet, translation of this technique to clinical routine is limited by organ shortage and the need for long-term immunosuppression, restricting its use to adults with unstable disease. The production of new bona fide β cells in vitro was thus investigated and finally achieved with human pluripotent stem cells (PSCs). Besides ethical concerns about the use of human embryos, studies are now evaluating the possibility of circumventing the spontaneous tumor formation associated with transplantation of PSCs. These issues fueled the search for cell candidates for β-cell engineering with safe profiles for clinical translation. In vivo studies revealed the regeneration capacity of the exocrine pancreas after injury that depends at least partially on facultative progenitors in the ductal compartment. These stimulated subpopulations of pancreatic ductal cells (PDCs) underwent β-cell transdifferentiation through reactivation of embryonic signaling pathways. In vitro models for expansion and differentiation of purified PDCs toward insulin-producing cells were described using cocktails of growth factors, extracellular-matrix proteins and transcription factor overexpression. In this review, we will describe the latest findings in pancreatic β-cell mass regeneration due to adult ductal progenitor cells. We will further describe recent advances in human PDC transdifferentiation to insulin-producing cells with potential for clinical translational studies.
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Affiliation(s)
- Elisa Corritore
- Institut de Recherche Expérimentale et Clinique, Pediatric Research Laboratory, Université Catholique de Louvain, Brussels, Belgium
| | - Yong-Syu Lee
- Institut de Recherche Expérimentale et Clinique, Pediatric Research Laboratory, Université Catholique de Louvain, Brussels, Belgium
| | - Etienne M. Sokal
- Institut de Recherche Expérimentale et Clinique, Pediatric Research Laboratory, Université Catholique de Louvain, Brussels, Belgium
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9
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Chen J, Zeng F, Forrester SJ, Eguchi S, Zhang MZ, Harris RC. Expression and Function of the Epidermal Growth Factor Receptor in Physiology and Disease. Physiol Rev 2016; 96:1025-1069. [DOI: 10.1152/physrev.00030.2015] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is the prototypical member of a family of membrane-associated intrinsic tyrosine kinase receptors, the ErbB family. EGFR is activated by multiple ligands, including EGF, transforming growth factor (TGF)-α, HB-EGF, betacellulin, amphiregulin, epiregulin, and epigen. EGFR is expressed in multiple organs and plays important roles in proliferation, survival, and differentiation in both development and normal physiology, as well as in pathophysiological conditions. In addition, EGFR transactivation underlies some important biologic consequences in response to many G protein-coupled receptor (GPCR) agonists. Aberrant EGFR activation is a significant factor in development and progression of multiple cancers, which has led to development of mechanism-based therapies with specific receptor antibodies and tyrosine kinase inhibitors. This review highlights the current knowledge about mechanisms and roles of EGFR in physiology and disease.
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Affiliation(s)
- Jianchun Chen
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Fenghua Zeng
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Steven J. Forrester
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Satoru Eguchi
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Ming-Zhi Zhang
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Raymond C. Harris
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
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10
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Zhu DD, Zhang J, Deng W, Yip YL, Lung HL, Tsang CM, Law WT, Yang J, Lau VMY, Shuen WH, Lung ML, Cheung ALM, Tsao SW. Significance of NF-κB activation in immortalization of nasopharyngeal epithelial cells. Int J Cancer 2015; 138:1175-85. [PMID: 26370441 DOI: 10.1002/ijc.29850] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 08/04/2015] [Accepted: 08/18/2015] [Indexed: 12/12/2022]
Abstract
NF-κB is a key regulator of inflammatory response and is frequently activated in human cancer including the undifferentiated nasopharyngeal carcinoma (NPC), which is common in Southern China including Hong Kong. Activation of NF-κB is common in NPC and may contribute to NPC development. The role of NF-κB activation in immortalization of nasopharyngeal epithelial (NPE) cells, which may represent an early event in NPC pathogenesis, is unknown. Examination of NF-κB activation in immortalization of NPE cells is of particular interest as the site of NPC is often heavily infiltrated with inflammatory cellular components. We found that constitutive activation of NF-κB signaling is a common phenotype in telomerase-immortalized NPE cell lines. Our results suggest that NF-κB activation promotes the growth of telomerase-immortalized NPE cells, and suppression of NF-κB activity inhibits their proliferation. Furthermore, we observed upregulation of c-Myc, IL-6 and Bmi-1 in our immortalized NPE cells. Inhibition of NF-κB downregulated expression of c-Myc, IL-6 and Bmi-1, suggesting that they are downstream events of NF-κB activation in immortalized NPE cells. We further delineated that EGFR/MEK/ERK/IKK/mTORC1 is the key upstream pathway of NF-κB activation in immortalized NPE cells. Elucidation of events underlying immortalization of NPE cells may provide insights into early events in pathogenesis of NPC. The identification of NF-κB activation and elucidation of its activation mechanism in immortalized NPE cells may reveal novel therapeutic targets for treatment and prevention of NPC.
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Affiliation(s)
- Dan Dan Zhu
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Jun Zhang
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Wen Deng
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China.,School of Nursing, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Yim Ling Yip
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Hong Lok Lung
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Chi Man Tsang
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Wai Tak Law
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Jie Yang
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Victoria Ming Yi Lau
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Wai Ho Shuen
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Maria Li Lung
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Annie Lai Man Cheung
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Sai Wah Tsao
- School of Biomedical Sciences and Center for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
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11
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Lemper M, Leuckx G, Heremans Y, German MS, Heimberg H, Bouwens L, Baeyens L. Reprogramming of human pancreatic exocrine cells to β-like cells. Cell Death Differ 2014; 22:1117-30. [PMID: 25476775 PMCID: PMC4572860 DOI: 10.1038/cdd.2014.193] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 09/04/2014] [Accepted: 10/23/2014] [Indexed: 12/31/2022] Open
Abstract
Rodent acinar cells exhibit a remarkable plasticity as they can transdifferentiate to duct-, hepatocyte- and islet β-like cells. We evaluated whether exocrine cells from adult human pancreas can similarly respond to proendocrine stimuli. Exocrine cells from adult human pancreas were transduced directly with lentiviruses expressing activated MAPK (mitogen-activated protein kinase) and STAT3 (signal transducer and activator of transcription 3) and cultured as monolayers or as 3D structures. Expression of STAT3 and MAPK in human exocrine cells activated expression of the proendocrine factor neurogenin 3 in 50% to 80% of transduced exocrine cells. However, the number of insulin-positive cells increased only in the exocrine cells grown initially in suspension before 3D culture. Lineage tracing identified human acinar cells as the source of Ngn3- and insulin-expressing cells. Long-term engraftment into immunocompromised mice increased the efficiency of reprogramming to insulin-positive cells. Our data demonstrate that exocrine cells from human pancreas can be reprogrammed to transplantable insulin-producing cells that acquire functionality. Given the large number of exocrine cells in a donor pancreas, this approach presents a novel strategy to expand cell therapy in type 1 diabetes.
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Affiliation(s)
- M Lemper
- Diabetes Research Center, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - G Leuckx
- Diabetes Research Center, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Y Heremans
- Diabetes Research Center, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - M S German
- Diabetes Center, Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143-0669, USA
| | - H Heimberg
- Diabetes Research Center, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - L Bouwens
- Diabetes Research Center, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - L Baeyens
- 1] Diabetes Research Center, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium [2] Diabetes Center, Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143-0669, USA
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12
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Ding L, Heremans Y, Pipeleers D, Ling Z, Heimberg H, Gysemans C, Mathieu C. Clinical Immunosuppressants Inhibit Inflammatory, Proliferative, and Reprogramming Potential, But Not Angiogenesis of Human Pancreatic Duct Cells. Cell Transplant 2014; 24:1585-98. [PMID: 25198311 DOI: 10.3727/096368914x682819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The presence of pancreatic duct cells in clinical islet grafts may affect long-term metabolic success. Human pancreatic duct cells express factors that may exert both protective and damaging effects on islet cells in the graft. Here we studied the potential of commonly used immunosuppressive drugs in islet transplantation-sirolimus, tacrolimus, and mycophenolate mofetil (MMF)-to influence the inflammatory and angiogenic capacity of human pancreatic duct cells in addition to their proliferation and reprogramming abilities. Our data show that the expression of specific proinflammatory cytokines by the human pancreatic duct cells was either unaltered or inhibited by the immunosuppressants studied, especially tacrolimus and MMF, whereas expression of chemotactic and angiogenic factors was unaffected. Although none of the immunosuppressants directly led to duct cell death, MMF prevented duct cell proliferation, and sirolimus inhibited neurogenin 3-mediated duct-to-(neuro)endocrine cell reprogramming. Our data indicate that the immunosuppressant tacrolimus was the least aggressive on the angiogenic, proliferative, and reprogramming potential of human pancreatic duct cells, while it was most powerful in inhibiting inflammatory cytokines, which may influence the outcome of islet transplantation.
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Affiliation(s)
- Lei Ding
- Laboratory of Clinical and Experimental Endocrinology, Campus Gasthuisberg O&N1, Faculty of Medicine, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
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13
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Hakonen E, Ustinov J, Palgi J, Miettinen PJ, Otonkoski T. EGFR signaling promotes β-cell proliferation and survivin expression during pregnancy. PLoS One 2014; 9:e93651. [PMID: 24695557 PMCID: PMC3973552 DOI: 10.1371/journal.pone.0093651] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 03/08/2014] [Indexed: 02/06/2023] Open
Abstract
Placental lactogen (PL) induced serotonergic signaling is essential for gestational β-cell mass expansion. We have previously shown that intact Epidermal growth factor –receptor (EGFR) function is a crucial component of this pathway. We now explored more specifically the link between EGFR and pregnancy-induced β-cell mass compensation. Islets were isolated from wild-type and β-cell-specific EGFR-dominant negative mice (E1-DN), stimulated with PL and analyzed for β-cell proliferation and expression of genes involved in gestational β-cell growth. β-cell mass dynamics were analyzed both with traditional morphometrical methods and three-dimensional optical projection tomography (OPT) of whole-mount insulin-stained pancreata. Insulin-positive volume analyzed with OPT increased 1.4-fold at gestational day 18.5 (GD18.5) when compared to non-pregnant mice. Number of islets peaked by GD13.5 (680 vs 1134 islets per pancreas, non-pregnant vs. GD13.5). PL stimulated beta cell proliferation in the wild-type islets, whereas the proliferative response was absent in the E1-DN mouse islets. Serotonin synthesizing enzymes were upregulated similarly in both the wild-type and E1-DN mice. However, while survivin (Birc5) mRNA was upregulated 5.5-fold during pregnancy in the wild-type islets, no change was seen in the E1-DN pregnant islets. PL induced survivin expression also in isolated islets and this was blocked by EGFR inhibitor gefitinib, mTOR inhibitor rapamycin and MEK inhibitor PD0325901. Our 3D-volumetric analysis of β-cell mass expansion during murine pregnancy revealed that islet number increases during pregnancy. In addition, our results suggest that EGFR signaling is required for lactogen-induced survivin expression via MAPK and mTOR pathways.
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Affiliation(s)
- Elina Hakonen
- Research Programs Unit, Molecular Neurology, Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
- * E-mail:
| | - Jarkko Ustinov
- Research Programs Unit, Molecular Neurology, Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
| | - Jaan Palgi
- Research Programs Unit, Molecular Neurology, Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
| | - Päivi J. Miettinen
- Research Programs Unit, Molecular Neurology, Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
- Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Timo Otonkoski
- Research Programs Unit, Molecular Neurology, Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
- Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
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14
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Paulo JA, Urrutia R, Kadiyala V, Banks P, Conwell DL, Steen H. Cross-species analysis of nicotine-induced proteomic alterations in pancreatic cells. Proteomics 2013; 13:1499-1512. [PMID: 23456891 DOI: 10.1002/pmic.201200492] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 01/03/2013] [Accepted: 02/07/2013] [Indexed: 12/13/2022]
Abstract
Toxic compounds in tobacco, such as nicotine, may adversely affect pancreatic function. We aim to determine nicotine-induced protein alterations in pancreatic cells, thereby revealing links between nicotine exposure and pancreatic disease. We compared the proteomic alterations induced by nicotine treatment in cultured pancreatic cells (mouse, rat, and human stellate cells and human duct cells) using MS-based techniques, specifically SDS-PAGE (gel) coupled with LC-MS/MS and spectral counting. We identified thousands of proteins in pancreatic cells, hundreds of which were identified exclusively or in higher abundance in either nicotine-treated or untreated cells. Interspecies comparisons of stellate cell proteins revealed several differentially abundant proteins (in nicotine treated versus untreated cells) common among the three species. Proteins appearing in all nicotine-treated stellate cells include amyloid beta (A4), procollagen type VI alpha 1, integral membrane protein 2B, and toll-interacting protein. Proteins that were differentially expressed upon nicotine treatment across cell lines were enriched in certain pathways, including nicotinic acetylcholine receptor, cytokine, and integrin signaling. At this analytical depth, we conclude that similar pathways are affected by nicotine, but alterations at the protein level among stellate cells of different species vary. Further interrogation of such pathways will lead to insights into the potential effect of nicotine on pancreatic cells at the biomolecular level and the extension of this concept to the effect of nicotine on pancreatic disease.
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Affiliation(s)
- Joao A Paulo
- Department of Pathology, Children's Hospital Boston, Boston, MA Proteomics Center at Children's Hospital Boston, Boston, MA Center for Pancreatic Disease, Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA
| | - Raul Urrutia
- Division of Gastroenterology and Hepatology, Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Vivek Kadiyala
- Center for Pancreatic Disease, Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA
| | - Peter Banks
- Center for Pancreatic Disease, Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA
| | - Darwin L Conwell
- Center for Pancreatic Disease, Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital and Department of Medicine, Harvard Medical School, Boston, MA
| | - Hanno Steen
- Department of Pathology, Children's Hospital Boston and Harvard Medical School, Boston, MA Proteomics Center at Children's Hospital Boston, Boston, MA
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15
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Lee J, Sugiyama T, Liu Y, Wang J, Gu X, Lei J, Markmann JF, Miyazaki S, Miyazaki JI, Szot GL, Bottino R, Kim SK. Expansion and conversion of human pancreatic ductal cells into insulin-secreting endocrine cells. eLife 2013; 2:e00940. [PMID: 24252877 PMCID: PMC3826580 DOI: 10.7554/elife.00940] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Pancreatic islet β-cell insufficiency underlies pathogenesis of diabetes mellitus; thus, functional β-cell replacement from renewable sources is the focus of intensive worldwide effort. However, in vitro production of progeny that secrete insulin in response to physiological cues from primary human cells has proven elusive. Here we describe fractionation, expansion and conversion of primary adult human pancreatic ductal cells into progeny resembling native β-cells. FACS-sorted adult human ductal cells clonally expanded as spheres in culture, while retaining ductal characteristics. Expression of the cardinal islet developmental regulators Neurog3, MafA, Pdx1 and Pax6 converted exocrine duct cells into endocrine progeny with hallmark β-cell properties, including the ability to synthesize, process and store insulin, and secrete it in response to glucose or other depolarizing stimuli. These studies provide evidence that genetic reprogramming of expandable human pancreatic cells with defined factors may serve as a general strategy for islet replacement in diabetes. DOI:http://dx.doi.org/10.7554/eLife.00940.001 Diabetes mellitus is a disease that can lead to dangerously high blood sugar levels, causing numerous complications such as heart disease, glaucoma, skin disorders, kidney disease, and nerve damage. In healthy individuals, beta cells in the pancreas produce a hormone called insulin, which stimulates cells in the liver, muscles and fat to take up glucose from the blood. However, this process is disrupted in people with diabetes, who either have too few pancreatic beta cells (type 1 diabetes) or do not respond appropriately to insulin (type 2 diabetes). All patients with type 1 diabetes, and some with type 2, must inject themselves regularly with insulin, but this does not always fully control the disease. Some type 1 patients have been successfully treated with beta cells transplanted from deceased donors, but there are not enough donor organs available for this to become routine. Thus, intensive efforts worldwide are focused on generating insulin-producing cells in the lab from human stem cells. However, the cells produced in this way can give rise to tumors. Now, Lee et al. have shown that duct cells, which make up about 30% of the human pancreas, can be converted into cells capable of producing and secreting insulin. Ductal cells obtained from donor pancreases were first separated from the remaining tissue and grown in cell culture. Viruses were then used to introduce genes that reprogrammed the ductal cells so that they acquired the ability to make, process and store insulin, and to release it in response to glucose—hallmark features of functional beta cells. As well as providing a potential source of cells for use in transplant or cell conversion therapies for diabetes, the ability to grow and maintain human pancreatic ductal cells in culture may make it easier to study other diseases that affect the pancreas, including pancreatitis, cystic fibrosis, and adenocarcinoma. DOI:http://dx.doi.org/10.7554/eLife.00940.002
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Affiliation(s)
- Jonghyeob Lee
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, United States
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16
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Hyder A, Ehnert S, Hinz H, Nüssler AK, Fändrich F, Ungefroren H. EGF and HB-EGF enhance the proliferation of programmable cells of monocytic origin (PCMO) through activation of MEK/ERK signaling and improve differentiation of PCMO-derived hepatocyte-like cells. Cell Commun Signal 2012; 10:23. [PMID: 22873932 PMCID: PMC3425323 DOI: 10.1186/1478-811x-10-23] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 06/22/2012] [Indexed: 12/13/2022] Open
Abstract
Background Hepatocyte-like cells (NeoHepatocytes) generated from a peripheral blood monocyte-derived stem cell-like cell (the PCMO) are a promising alternative for primary hepatocytes in cell transplantation studies to cure liver diseases. However, to be therapeutically effective NeoHepatocytes are needed in large quantities. It was the aim of the present study to investigate i) whether the proportion of actively proliferating NeoHepatocytes can be enhanced by supplementing the PCMO differentiation medium (containing M-CSF, IL-3, and human serum) with either EGF or HB-EGF and ii) which signaling pathway underlies the promitotic effect. Results EGF and HB-EGF enhanced cell proliferation of PCMOs as demonstrated by increased expression of cycle control genes (ABL, ANAPC2, CDC2, CDK4, CDK6), phosphorylation of the retinoblastoma protein, and increased PCMO cell numbers after stimulation with EGF or HB-EGF. EGF also raised the number of monocytes expressing the proliferation marker Ki67. PCMOs expressed the EGF receptors EGFR (ERBB1) and ERBB3, and expression of both increased during PCMO generation. Phosphoimmunoblotting of PCMOs indicated that both EGF and HB-EGF activated MEK-1/2 and ERK1/2 in a concentration-dependent fashion with the effect of EGF being more prominent. EGF treatment further decreased expression of p47phox and increased that of Nanog indicating enhanced dedifferentiation and pluripotency, respectively. Treatment with both EGF and HB-EGF resulted in NeoHepatocytes with improved functional parameters. Conclusions The results suggested that the addition of EGF or HB-EGF to PCMO differentiation medium superactivates MEK/ERK signaling which then increases both PCMO proliferation, number, and functional differentiation of PCMO-derived NeoHepatocytes.
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Affiliation(s)
- Ayman Hyder
- Clinic for Applied Cellular Medicine, UKSH, Campus Kiel, Arnold-Heller Strasse 3, Hs, 18, 24105, Kiel, Germany.
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Swales N, Martens GA, Bonné S, Heremans Y, Borup R, Van de Casteele M, Ling Z, Pipeleers D, Ravassard P, Nielsen F, Ferrer J, Heimberg H. Plasticity of adult human pancreatic duct cells by neurogenin3-mediated reprogramming. PLoS One 2012. [PMID: 22606327 DOI: 10.137/journal.pone.0037055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIMS/HYPOTHESIS Duct cells isolated from adult human pancreas can be reprogrammed to express islet beta cell genes by adenoviral transduction of the developmental transcription factor neurogenin3 (Ngn3). In this study we aimed to fully characterize the extent of this reprogramming and intended to improve it. METHODS The extent of the Ngn3-mediated duct-to-endocrine cell reprogramming was measured employing genome wide mRNA profiling. By modulation of the Delta-Notch signaling or addition of pancreatic endocrine transcription factors Myt1, MafA and Pdx1 we intended to improve the reprogramming. RESULTS Ngn3 stimulates duct cells to express a focused set of genes that are characteristic for islet endocrine cells and/or neural tissues. This neuro-endocrine shift however, is incomplete with less than 10% of full duct-to-endocrine reprogramming achieved. Transduction of exogenous Ngn3 activates endogenous Ngn3 suggesting auto-activation of this gene. Furthermore, pancreatic endocrine reprogramming of human duct cells can be moderately enhanced by inhibition of Delta-Notch signaling as well as by co-expressing the transcription factor Myt1, but not MafA and Pdx1. CONCLUSIONS/INTERPRETATION The results provide further insight into the plasticity of adult human duct cells and suggest measurable routes to enhance Ngn3-mediated in vitro reprogramming protocols for regenerative beta cell therapy in diabetes.
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Affiliation(s)
- Nathalie Swales
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
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18
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Swales N, Martens GA, Bonné S, Heremans Y, Borup R, Van de Casteele M, Ling Z, Pipeleers D, Ravassard P, Nielsen F, Ferrer J, Heimberg H. Plasticity of adult human pancreatic duct cells by neurogenin3-mediated reprogramming. PLoS One 2012; 7:e37055. [PMID: 22606327 PMCID: PMC3351393 DOI: 10.1371/journal.pone.0037055] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 04/16/2012] [Indexed: 12/01/2022] Open
Abstract
Aims/Hypothesis Duct cells isolated from adult human pancreas can be reprogrammed to express islet beta cell genes by adenoviral transduction of the developmental transcription factor neurogenin3 (Ngn3). In this study we aimed to fully characterize the extent of this reprogramming and intended to improve it. Methods The extent of the Ngn3-mediated duct-to-endocrine cell reprogramming was measured employing genome wide mRNA profiling. By modulation of the Delta-Notch signaling or addition of pancreatic endocrine transcription factors Myt1, MafA and Pdx1 we intended to improve the reprogramming. Results Ngn3 stimulates duct cells to express a focused set of genes that are characteristic for islet endocrine cells and/or neural tissues. This neuro-endocrine shift however, is incomplete with less than 10% of full duct-to-endocrine reprogramming achieved. Transduction of exogenous Ngn3 activates endogenous Ngn3 suggesting auto-activation of this gene. Furthermore, pancreatic endocrine reprogramming of human duct cells can be moderately enhanced by inhibition of Delta-Notch signaling as well as by co-expressing the transcription factor Myt1, but not MafA and Pdx1. Conclusions/Interpretation The results provide further insight into the plasticity of adult human duct cells and suggest measurable routes to enhance Ngn3-mediated in vitro reprogramming protocols for regenerative beta cell therapy in diabetes.
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Affiliation(s)
- Nathalie Swales
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Geert A. Martens
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Stefan Bonné
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Yves Heremans
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Rehannah Borup
- Microarray Facility, Rigshospitalet, Copenhagen, Denmark
| | | | - Zhidong Ling
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Daniel Pipeleers
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Philippe Ravassard
- Centre de Recherche Institut du Cerveau et de la Moelle, CNRS UMR7225, Université Pierre et Marie Curie, Paris, France
| | - Finn Nielsen
- Microarray Facility, Rigshospitalet, Copenhagen, Denmark
| | - Jorge Ferrer
- Genomic Programming of Beta Cells Laboratory, Institut d’Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Harry Heimberg
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
- * E-mail:
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19
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Swales N, Martens GA, Bonné S, Heremans Y, Borup R, Van de Casteele M, Ling Z, Pipeleers D, Ravassard P, Nielsen F, Ferrer J, Heimberg H. Plasticity of adult human pancreatic duct cells by neurogenin3-mediated reprogramming. PLoS One 2012. [PMID: 22606327 DOI: 10.137/journal.pone.0037055.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIMS/HYPOTHESIS Duct cells isolated from adult human pancreas can be reprogrammed to express islet beta cell genes by adenoviral transduction of the developmental transcription factor neurogenin3 (Ngn3). In this study we aimed to fully characterize the extent of this reprogramming and intended to improve it. METHODS The extent of the Ngn3-mediated duct-to-endocrine cell reprogramming was measured employing genome wide mRNA profiling. By modulation of the Delta-Notch signaling or addition of pancreatic endocrine transcription factors Myt1, MafA and Pdx1 we intended to improve the reprogramming. RESULTS Ngn3 stimulates duct cells to express a focused set of genes that are characteristic for islet endocrine cells and/or neural tissues. This neuro-endocrine shift however, is incomplete with less than 10% of full duct-to-endocrine reprogramming achieved. Transduction of exogenous Ngn3 activates endogenous Ngn3 suggesting auto-activation of this gene. Furthermore, pancreatic endocrine reprogramming of human duct cells can be moderately enhanced by inhibition of Delta-Notch signaling as well as by co-expressing the transcription factor Myt1, but not MafA and Pdx1. CONCLUSIONS/INTERPRETATION The results provide further insight into the plasticity of adult human duct cells and suggest measurable routes to enhance Ngn3-mediated in vitro reprogramming protocols for regenerative beta cell therapy in diabetes.
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Affiliation(s)
- Nathalie Swales
- Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium
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20
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Hoesli CA, Johnson JD, Piret JM. Purified human pancreatic duct cell culture conditions defined by serum-free high-content growth factor screening. PLoS One 2012; 7:e33999. [PMID: 22442738 PMCID: PMC3307781 DOI: 10.1371/journal.pone.0033999] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 02/22/2012] [Indexed: 01/26/2023] Open
Abstract
The proliferation of pancreatic duct-like CK19+ cells has implications for multiple disease states including pancreatic cancer and diabetes mellitus. The in vitro study of this important cell type has been hampered by their limited expansion compared to fibroblast-like vimentin+ cells that overgrow primary cultures. We aimed to develop a screening platform for duct cell mitogens after depletion of the vimentin+ population. The CD90 cell surface marker was used to remove the vimentin+ cells from islet-depleted human pancreas cell cultures by magnetic-activated cell sorting. Cell sorting decreased CD90+ cell contamination of the cultures from 34±20% to 1.3±0.6%, yielding purified CK19+ cultures with epithelial morphology. A full-factorial experimental design was then applied to test the mitogenic effects of bFGF, EGF, HGF, KGF and VEGF. After 6 days in test conditions, the cells were labelled with BrdU, stained and analyzed by high-throughput imaging. This screening assay confirmed the expected mitogenic effects of bFGF, EGF, HGF and KGF on CK19+ cells and additionally revealed interactions between these factors and VEGF. A serum-free medium containing bFGF, EGF, HGF and KGF led to CK19+ cell expansion comparable to the addition of 10% serum. The methods developed in this work should advance pancreatic cancer and diabetes research by providing effective cell culture and high-throughput screening platforms to study purified primary pancreatic CK19+ cells.
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Affiliation(s)
- Corinne A Hoesli
- Michael Smith Laboratories and Department of Biological and Chemical Engineering, University of British Columbia, Vancouver, Canada.
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21
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Hanley SC, Assouline-Thomas B, Makhlin J, Rosenberg L. Epidermal growth factor induces adult human islet cell dedifferentiation. J Endocrinol 2011; 211:231-9. [PMID: 21933872 DOI: 10.1530/joe-11-0213] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Given the inherent therapeutic potential of the morphogenetic plasticity of adult human islets, the identification of factors controlling their cellular differentiation is of interest. The epidermal growth factor (EGF) family has been identified previously in the context of pancreatic organogenesis. We examined the role of EGF in an in vitro model whereby adult human islets are embedded in a collagen gel and dedifferentiated into duct-like epithelial structures (DLS). We demonstrated that DLS formation was EGF dependent, while residual DLS formation in the absence of added EGF was abrogated by EGF receptor inhibitor treatment. With respect to signaling, EGF administration led to an increase in c-Jun NH2-terminal kinase (JNK) phosphorylation early in DLS formation and in AKT and extracellular signal-regulated kinase (ERK) phosphorylation late in the process of DLS formation, concomitant with the increased proliferation of dedifferentiated cells. In the absence of EGF, these phosphorylation changes are not seen and the typical increase in DLS epithelial cell proliferation seen after 10 days in culture is attenuated. Thus, in our model, EGF is necessary for islet cell dedifferentiation, playing an important role in both the onset of DLS formation (through JNK) and in the proliferation of these dedifferentiated cells (through AKT and ERK).
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Affiliation(s)
- Stephen C Hanley
- Department of Surgery, McGill University, Montreal, Quebec, Canada
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22
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Uzan B, Figeac F, Portha B, Movassat J. Mechanisms of KGF mediated signaling in pancreatic duct cell proliferation and differentiation. PLoS One 2009; 4:e4734. [PMID: 19266047 PMCID: PMC2649538 DOI: 10.1371/journal.pone.0004734] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Accepted: 01/13/2009] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Keratinocyte growth factor (KGF; palifermin) is a growth factor with a high degree of specificity for epithelial cells. KGF is an important effector of epithelial growth and tissue homeostasis in various organs including the pancreas. Here we investigated the intracellular signaling pathways involved in the mediation of pancreatic ductal cell proliferation and differentiation induced by exogenous KGF during beta-cell regeneration in diabetic rat. METHODOLOGY AND RESULTS In vitro and in vivo duct cell proliferation was measured by BrdU incorporation assay. The implication of MAPK-ERK1/2 in the mediation of KGF-induced cell proliferation was determined by inactivation of this pathway, using the pharmacological inhibitor or antisense morpholino-oligonucleotides against MEK1. In vivo KGF-induced duct cell differentiation was assessed by the immunolocalization of PDX1 and Glut2 in ductal cells and the implication of PI3K/AKT in this process was investigated. We showed that KGF exerted a potent mitogenic effect on ductal cells. Both in vitro and in vivo, its effect on cell proliferation was mediated through the activation of ERK1/2 as evidenced by the abolition of duct cell proliferation in the context of MEK/ERK inactivation. In vivo, KGF treatment triggered ductal cell differentiation as revealed by the expression of PDX1 and Glut2 in a subpopulation of ductal cells via a PI3K-dependent mechanism. CONCLUSION Here we show that KGF promotes beta-cell regeneration by stimulating duct cell proliferation in vivo. Moreover, we demonstrated for the first time that KGF directly induces the expression of PDX1 in some ductal cells thus inducing beta-cell neogenesis. We further explored the molecular mechanisms involved in these processes and showed that the effects of KGF on duct cell proliferation are mediated by the MEK-ERK1/2 pathway, while the KGF-induced cell differentiation is mediated by the PI3K/AKT pathway. These findings might have important implications for the in vivo induction of duct-to-beta cell neogenesis in patients with beta-cell deficiency.
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Affiliation(s)
- Benjamin Uzan
- Laboratory of Pathophysiology of Nutrition, Paris Diderot- Paris 7 University, Department of Life Science, CNRS/UMR 7059, Paris, France
| | - Florence Figeac
- Laboratory of Pathophysiology of Nutrition, Paris Diderot- Paris 7 University, Department of Life Science, CNRS/UMR 7059, Paris, France
| | - Bernard Portha
- Laboratory of Pathophysiology of Nutrition, Paris Diderot- Paris 7 University, Department of Life Science, CNRS/UMR 7059, Paris, France
| | - Jamileh Movassat
- Laboratory of Pathophysiology of Nutrition, Paris Diderot- Paris 7 University, Department of Life Science, CNRS/UMR 7059, Paris, France
- * E-mail:
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Abstract
Pancreatic islet development is impaired in mice lacking EGFRs (epidermal growth factor receptors). Even partial tissue-specific attenuation of EGFR signalling in the islets leads to markedly reduced beta-cell proliferation and development of diabetes during the first weeks after birth. Out of the many EGFR ligands, betacellulin has been specifically associated with positive effects on beta-cell growth, through both increased proliferation and neogenesis. EGFR action is also necessary for the beta-cell mitogenic activity of the gut hormone GLP-1 (glucagon-like peptide 1). Finally, in vitro models demonstrate a central role for EGFR in transdifferentiation of pancreatic acinar and ductal cells into endocrine islet cells. EGFR thus plays an essential role in beta-cell mass regulation, but its mechanisms of action remain poorly understood.
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Martin-Pagola A, Sisino G, Allende G, Dominguez-Bendala J, Gianani R, Reijonen H, Nepom GT, Ricordi C, Ruiz P, Sageshima J, Ciancio G, Burke GW, Pugliese A. Insulin protein and proliferation in ductal cells in the transplanted pancreas of patients with type 1 diabetes and recurrence of autoimmunity. Diabetologia 2008; 51:1803-13. [PMID: 18696047 PMCID: PMC3019613 DOI: 10.1007/s00125-008-1105-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 06/27/2008] [Indexed: 10/21/2022]
Abstract
AIM/HYPOTHESIS We investigated whether beta cell neoformation occurs in the transplanted pancreas in patients with type 1 diabetes who had received a simultaneous pancreas-kidney transplant (SPK) and later developed recurrence of autoimmunity. METHODS We examined pancreas transplant biopsies from nine SPK patients with or without recurrent autoimmunity or recurrent diabetes and from 16 non-diabetic organ donors. Tissues were analysed by immunohistochemistry and immunofluorescence. RESULTS Numerous cytokeratin-19 (CK-19)(+) pancreatic ductal cells stained for insulin in six SPK recipients with recurrent autoimmunity, in five of whom diabetes requiring insulin therapy recurred. These cells also stained for the transcription factor pancreatic-duodenal homeobox-1 (Pdx-1), which is implicated in pancreatic development and beta cell differentiation. The number of insulin(+) ductal cells varied, being highest in the patient with the most severe beta cell loss and lowest in the normoglycaemic patient. In the patient with the most severe beta cell loss, we detected insulin(+)CK-19(+)Pdx-1(+) cells staining for the proliferation-related Ki-67 antigen (Ki-67), indicating proliferation. We were unable to detect Ki-67(+) beta cells within the islets in any SPK patient. Some insulin(+)CK-19(-) ductal cells contained chromogranin A, suggesting further endocrine differentiation. Insulin(+) cells were rarely noted in the pancreas transplant ducts in three SPK patients without islet autoimmunity and in six of 16 non-diabetic organ donors; these insulin(+) cells were never CK-19(+). CONCLUSIONS/INTERPRETATION Insulin(+) pancreatic ductal cells, some apparently proliferating, were found in the transplanted pancreas with recurrent islet autoimmunity/diabetes. Replicating beta cells were not detected within islets. The observed changes may represent attempts at tissue remodelling and beta cell regeneration involving ductal cells in the human transplanted pancreas, possibly stimulated by hyperglycaemia and chronic inflammation.
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Affiliation(s)
- A Martin-Pagola
- Diabetes Research Institute, Leonard Miller School of Medicine, University of Miami, 1450 NW 10th Avenue, Miami, FL 33136, USA
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25
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Cantaluppi V, Bruno S, Camussi G. Pancreatic ductal transdifferentiation for β-cell neogenesis. Expert Opin Ther Pat 2008. [DOI: 10.1517/13543776.18.8.963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Tzeng CWD, Frolov A, Frolova N, Jhala NC, Howard JH, Vickers SM, Buchsbaum DJ, Heslin MJ, Arnoletti JP. EGFR Genomic Gain and Aberrant Pathway Signaling in Pancreatic Cancer Patients. J Surg Res 2007; 143:20-6. [DOI: 10.1016/j.jss.2007.01.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2006] [Revised: 01/16/2007] [Accepted: 01/18/2007] [Indexed: 10/22/2022]
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Thowfeequ S, Ralphs KL, Yu WY, Slack JMW, Tosh D. Betacellulin inhibits amylase and glucagon production and promotes beta cell differentiation in mouse embryonic pancreas. Diabetologia 2007; 50:1688-97. [PMID: 17563868 DOI: 10.1007/s00125-007-0724-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2007] [Accepted: 04/25/2007] [Indexed: 10/23/2022]
Abstract
AIMS/HYPOTHESIS Betacellulin, a member of the epidermal growth factor family, is expressed in the pancreas and is thought to regulate differentiation of beta cells during development. The aim of the present study was to investigate the effects of exogenous betacellulin on the development of the mouse embryonic pancreas. MATERIALS AND METHODS We used an in vitro culture model system based on the isolation and culture of the dorsal embryonic pancreas from day 11.5 embryos. Cultures were treated for up to 10 days with 10 ng/ml betacellulin and then analysed for changes in the expression of pancreatic exocrine, endocrine and ductal markers. RESULTS Pancreases developed in culture and expressed the full complement of exocrine (both acinar and ductal) and endocrine cell types. Betacellulin enhanced branching morphogenesis and the proliferation of mesenchyme, increased Pdx1 and insulin production and inhibited the production of the exocrine cell marker amylase and the endocrine hormone glucagon. CONCLUSIONS/INTERPRETATION These results suggest betacellulin has distinct and separate effects on exocrine, endocrine and ductal differentiation. In the future, betacellulin could perhaps be utilised to increase the production of beta cells from embryonic pancreatic tissue for therapeutic transplantation.
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Affiliation(s)
- S Thowfeequ
- Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, Bath, UK
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Galarneau L, Loranger A, Gilbert S, Marceau N. Keratins modulate hepatic cell adhesion, size and G1/S transition. Exp Cell Res 2006; 313:179-94. [PMID: 17112511 DOI: 10.1016/j.yexcr.2006.10.007] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2006] [Revised: 09/26/2006] [Accepted: 10/02/2006] [Indexed: 12/31/2022]
Abstract
Keratins (Ks) are the intermediate filament (IF) proteins of epithelial cells. Hepatocyte IFs are made solely of keratins 8 and 18 (K8/K18), the hallmark of all simple epithelia. While K8/K18 are essential for maintaining structural integrity, there is accumulating evidence indicating that they also exert non-mechanical functions. We have reported recently that K8/K18-free hepatocytes from K8-null mice are more sensitive to Fas-mediated apoptosis, in line with an increased Fas density at the cell surface and an altered c-Flip regulation of the anti-apoptotic ERK1/2 signaling pathway. In the present study, we show that K8-null hepatocytes attach more rapidly but spread more slowly on a fibronectin substratum and undergo a more efficient G1/S transition than wild-type hepatocytes. Moreover, plectin, an IF associated protein, receptor for activated C kinase 1 (RACK1), a plectin partner, and vinculin, a key component of focal adhesions, distribute differently in spreading K8-null hepatocytes. Cell seeding leads to no differential activation of ERK1/2 in WT versus K8-null hepatocytes, whereas a stronger Akt activation is detected in K8-null hepatocytes. Insulin stimulation also leads to a differential Akt activation, implying altered Akt signaling capacity as a result of the K8/K18 loss. In addition, a delayed autophosphorylation of FAK, a target for integrin beta1 signaling, was obtained in seeding K8-null hepatocytes. These alterations in cell cycle-related events in hepatocytes in primary culture are also found in a K8-knockdown H4-II-E-C3 rat hepatoma cell line. Besides, K8/K18-free cells are smaller and exhibit a reduced rate of protein synthesis. In addition, a distinctive cyclin interplay is observed in these K8/K18-free hepatic cells, namely a more efficient cyclin A-dependent G1/S phase transition. Furthermore, K8 re-expression in these cells, following transfer of a human K8 cDNA, restores proper cell size, spreading and growth. Together, these results suggest new interrelated signaling roles of K8/18 with plectin/RACK1 in the modulation of cell attachment/spreading, size/protein synthesis and G1/S transition.
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Affiliation(s)
- Luc Galarneau
- Centre de Recherche en Cancérologie, Quebec City, QC, Canada G1R 2J6
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Tokui Y, Kozawa J, Yamagata K, Zhang J, Ohmoto H, Tochino Y, Okita K, Iwahashi H, Namba M, Shimomura I, Miyagawa JI. Neogenesis and proliferation of beta-cells induced by human betacellulin gene transduction via retrograde pancreatic duct injection of an adenovirus vector. Biochem Biophys Res Commun 2006; 350:987-93. [PMID: 17046717 DOI: 10.1016/j.bbrc.2006.09.154] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2006] [Accepted: 09/27/2006] [Indexed: 11/16/2022]
Abstract
Betacellulin (BTC) has been shown to have a role in the differentiation and proliferation of beta-cells both in vitro and in vivo. We administered a human betacellulin (hBTC) adenovirus vector to male ICR mice via retrograde pancreatic duct injection. As a control, we administered a beta-galactosidase adenovirus vector. In the mice, hBTC protein was mainly overexpressed by pancreatic duct cells. On immunohistochemical analysis, we observed features of beta-cell neogenesis as newly formed insulin-positive cells in the duct cell lining or islet-like cell clusters (ICCs) closely associated with the ducts. The BrdU labeling index of beta-cells was also increased by the betacellulin vector compared with that of control mice. These results indicate that hBTC gene transduction into adult pancreatic duct cells promoted beta-cell differentiation (mainly from duct cells) and proliferation of pre-existing beta-cells, resulting in an increase of the beta-cell mass that improved glucose tolerance in diabetic mice.
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Affiliation(s)
- Yae Tokui
- Department of Internal Medicine and Molecular Science, Graduate School of Medicine, Osaka University, 2-2-B5, Yamadaoka, Suita-city, Osaka 565-0871, Japan.
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Li H, Fu X, Ouyang Y, Cai C, Wang J, Sun T. Adult bone-marrow-derived mesenchymal stem cells contribute to wound healing of skin appendages. Cell Tissue Res 2006; 326:725-36. [PMID: 16906419 DOI: 10.1007/s00441-006-0270-9] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2006] [Accepted: 06/02/2006] [Indexed: 10/24/2022]
Abstract
Adult bone-marrow-derived mesenchymal stem cells (MSCs) are well-established as having the capacity to differentiate into cells with mesodermal, ectodermal, and endodermal characteristics and can leave their niche to home toward and engraft within foreign tissues. To investigate whether adult MSCs contribute to the repair of skin appendages after injury, BrdU-labeled MSCs were co-cultured with heat-shocked confluent sweat gland cells (SGCs) in vitro and later intravenously injected into full-thickness skin wounds in rats. When adult MSCs were co-cultured with heat-shocked SGCs, a subset of adult MSCs differentiated into SGCs, the percentage of differentiation being enhanced by epidermal growth factor and the injured microenviroment, but weakened by PD98059. The ERK (extracellular signal-regulated kinase) pathway, especially pERK, was involved in the phenotype conversion of human MSCs into human SGC. Labeled MSCs were noted in hair follicles, sebaceous glands, blood vessels, and dermis in full-thickness wounds, and the incorporated cells in hair follicles and sebaceous glands were also positive for pan-cytokeratin. After wound healing, some labeled MSCs returned to the bone marrow, whereas other were retained in the dermis. We conclude that adult MSCs have the capacity to dock at specific sites, to contribute to wound healing of skin appendages, and to home toward marrow, and that engraftment of bone-marrow-derived cells is a functional event.
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Affiliation(s)
- Haihong Li
- Wound Healing and Cell Biology Laboratory, Burns Institute, The First Affiliated Hospital (304th Hospital), General Hospital of PLA, Trauma Center of Postgraduate Medical College, Beijing, People's Republic of China
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Jinawath A, Akiyama Y, Yuasa Y, Pairojkul C. Expression of phosphorylated ERK1/2 and homeodomain protein CDX2 in cholangiocarcinoma. J Cancer Res Clin Oncol 2006; 132:805-10. [PMID: 16794828 DOI: 10.1007/s00432-006-0129-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2006] [Accepted: 05/12/2006] [Indexed: 12/29/2022]
Abstract
PURPOSE The extracellular signal-regulated kinase (ERK) 1/2 pathway plays important roles in the regulation of cell proliferation, differentiation and cell survival. The caudal-related homeobox protein CDX2 is essential for the development of the intestine, and is related to gastric and gallbladder cancers with the intestinal phenotype. However, the roles of ERK1/2 phosphorylation (pERK1/2) and CDX2 in cholangiocarcinogenesis remain unknown. METHODS We investigated the expression of pERK1/2, CDX2 and MUC2 in Thai cholangiocarcinoma (CCA) specimens by means of immunohistochemical staining, and compared the expression of these proteins with clinicopathological factors. RESULTS The pERK1/2 protein was expressed in 29 of 59 (49.2%) CCA cases. Interestingly, in tubular-type CCA, the frequency of pERK1/2 expression was associated with a higher grade of differentiation (P = 0.001). CDX2 expression was observed in 22 of the 59 (37.3%) CCA cases, showed a relationship with MUC2 expression (P = 0.001), and was much higher in papillary-type than tubular-type CCA (P = 0.002). CONCLUSION These results imply that pERK1/2 may be important for the differentiation of tubular-type CCA, while CDX2 is related to the intestinal phenotype of papillary-type CCA.
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Affiliation(s)
- Artit Jinawath
- Department of Molecular Oncology, Graduate School of Medicine and Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
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Abstract
Diabetes mellitus types 1 and 2 are characterized by absolute versus relative lack of insulin-producing beta cells, respectively. Reconstitution of a functional beta-cell mass by cell therapy--using organ donor islets of Langerhans--has been demonstrated to restore euglycaemia in the absence of insulin treatment. This remarkable achievement has stimulated the search for appropriate stem cell sources from which adequate expansion and maturation of therapeutic beta cells can be achieved. This recent activity is reviewed and presented with particular focus on directed differentiation from pluripotent embryonic stem cells (versus other stem/progenitor cell sources) based on knowledge from pancreatic beta-cell development and the parallel approach to controlling endogenous beta-cell neogenesis.
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Ouziel-Yahalom L, Zalzman M, Anker-Kitai L, Knoller S, Bar Y, Glandt M, Herold K, Efrat S. Expansion and redifferentiation of adult human pancreatic islet cells. Biochem Biophys Res Commun 2006; 341:291-8. [PMID: 16446152 DOI: 10.1016/j.bbrc.2005.12.187] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Accepted: 12/16/2005] [Indexed: 12/19/2022]
Abstract
Beta-cell replacement represents the ultimate cure for type 1 diabetes, however it is limited by availability of organ donors. Adult human islets are difficult to propagate in culture, and efforts to expand them result in dedifferentiation. Here we describe conditions for expansion of adult human islet cells, as well as a way for their redifferentiation. Most cells in islets isolated from human pancreata were induced to replicate within the first week of culture in expansion medium. Cells were propagated for 16 population doublings, without a change in replication rate or noticeable cell mortality, representing an expansion of over 65,000-fold. Replication was accompanied by a decrease in expression of key beta-cell genes. Shift of the cells to differentiation medium containing betacellulin resulted in redifferentiation, as manifested by restoration of beta-cell gene expression and insulin content. These methods may allow transplantation of functional islet cells from single donors into multiple recipients.
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Affiliation(s)
- Limor Ouziel-Yahalom
- Department of Human Genetics and Molecular Medicine, Sackler School of Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
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