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Cho CJ, Brown JW, Mills JC. Origins of cancer: ain't it just mature cells misbehaving? EMBO J 2024; 43:2530-2551. [PMID: 38773319 PMCID: PMC11217308 DOI: 10.1038/s44318-024-00099-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 03/15/2024] [Accepted: 03/22/2024] [Indexed: 05/23/2024] Open
Abstract
A pervasive view is that undifferentiated stem cells are alone responsible for generating all other cells and are the origins of cancer. However, emerging evidence demonstrates fully differentiated cells are plastic, can be coaxed to proliferate, and also play essential roles in tissue maintenance, regeneration, and tumorigenesis. Here, we review the mechanisms governing how differentiated cells become cancer cells. First, we examine the unique characteristics of differentiated cell division, focusing on why differentiated cells are more susceptible than stem cells to accumulating mutations. Next, we investigate why the evolution of multicellularity in animals likely required plastic differentiated cells that maintain the capacity to return to the cell cycle and required the tumor suppressor p53. Finally, we examine an example of an evolutionarily conserved program for the plasticity of differentiated cells, paligenosis, which helps explain the origins of cancers that arise in adults. Altogether, we highlight new perspectives for understanding the development of cancer and new strategies for preventing carcinogenic cellular transformations from occurring.
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Affiliation(s)
- Charles J Cho
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jeffrey W Brown
- Division of Gastroenterology, Department of Medicine, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Jason C Mills
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA.
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.
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2
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Waldum H, Slupphaug G. Correctly identifying the cells of origin is essential for tailoring treatment and understanding the emergence of cancer stem cells and late metastases. Front Oncol 2024; 14:1369907. [PMID: 38660133 PMCID: PMC11040596 DOI: 10.3389/fonc.2024.1369907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/25/2024] [Indexed: 04/26/2024] Open
Abstract
Malignancy manifests itself by deregulated growth and the ability to invade surrounding tissues or metastasize to other organs. These properties are due to genetic and/or epigenetic changes, most often mutations. Many aspects of carcinogenesis are known, but the cell of origin has been insufficiently focused on, which is unfortunate since the regulation of its growth is essential to understand the carcinogenic process and guide treatment. Similarly, the concept of cancer stem cells as cells having the ability to stop proliferation and rest in a state of dormancy and being resistant to cytotoxic drugs before "waking up" and become a highly malignant tumor recurrence, is not fully understood. Some tumors may recur after decades, a phenomenon probably also connected to cancer stem cells. The present review shows that many of these questions are related to the cell of origin as differentiated cells being long-term stimulated to proliferation.
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Affiliation(s)
- Helge Waldum
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
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3
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Fedele M, Cerchia L, Battista S. Subtype Transdifferentiation in Human Cancer: The Power of Tissue Plasticity in Tumor Progression. Cells 2024; 13:350. [PMID: 38391963 PMCID: PMC10887430 DOI: 10.3390/cells13040350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024] Open
Abstract
The classification of tumors into subtypes, characterized by phenotypes determined by specific differentiation pathways, aids diagnosis and directs therapy towards targeted approaches. However, with the advent and explosion of next-generation sequencing, cancer phenotypes are turning out to be far more heterogenous than initially thought, and the classification is continually being updated to include more subtypes. Tumors are indeed highly dynamic, and they can evolve and undergo various changes in their characteristics during disease progression. The picture becomes even more complex when the tumor responds to a therapy. In all these cases, cancer cells acquire the ability to transdifferentiate, changing subtype, and adapt to changing microenvironments. These modifications affect the tumor's growth rate, invasiveness, response to treatment, and overall clinical behavior. Studying tumor subtype transitions is crucial for understanding tumor evolution, predicting disease outcomes, and developing personalized treatment strategies. We discuss this emerging hallmark of cancer and the molecular mechanisms involved at the crossroads between tumor cells and their microenvironment, focusing on four different human cancers in which tissue plasticity causes a subtype switch: breast cancer, prostate cancer, glioblastoma, and pancreatic adenocarcinoma.
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Affiliation(s)
- Monica Fedele
- Institute of Experimental Endocrinology and Oncology “G. Salvatore” (IEOS), National Research Council—CNR, 80131 Naples, Italy; (L.C.); (S.B.)
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4
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Martinez-Uribe O, Becker TC, Garman KS. Promises and Limitations of Current Models for Understanding Barrett's Esophagus and Esophageal Adenocarcinoma. Cell Mol Gastroenterol Hepatol 2024; 17:1025-1038. [PMID: 38325549 PMCID: PMC11041847 DOI: 10.1016/j.jcmgh.2024.01.017] [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: 12/07/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/09/2024]
Abstract
BACKGROUND & AIMS This review was developed to provide a thorough and effective update on models relevant to esophageal metaplasia, dysplasia, and carcinogenesis, focusing on the advantages and limitations of different models of Barrett's esophagus (BE) and esophageal adenocarcinoma (EAC). METHODS This expert review was written on the basis of a thorough review of the literature combined with expert interpretation of the state of the field. We emphasized advances over the years 2012-2023 and provided detailed information related to the characterization of established human esophageal cell lines. RESULTS New insights have been gained into the pathogenesis of BE and EAC using patient-derived samples and single-cell approaches. Relevant animal models include genetic as well as surgical mouse models and emphasize the development of lesions at the squamocolumnar junction in the mouse stomach. Rat models are generated using surgical approaches that directly connect the small intestine and esophagus. Large animal models have the advantage of including features in human esophagus such as esophageal submucosal glands. Alternatively, cell culture approaches remain important in the field and allow for personalized approaches, and scientific rigor can be ensured by authentication of cell lines. CONCLUSIONS Research in BE and EAC remains highly relevant given the morbidity and mortality associated with cancers of the tubular esophagus and gastroesophageal junction. Careful selection of models and inclusion of human samples whenever possible will ensure relevance to human health and disease.
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Affiliation(s)
- Omar Martinez-Uribe
- Division of Gastroenterology, Department of Medicine, Duke University, Durham, North Carolina
| | - Thomas C Becker
- Division of Endocrinology, Department of Medicine, Duke University, Durham, North Carolina
| | - Katherine S Garman
- Division of Gastroenterology, Department of Medicine, Duke University, Durham, North Carolina.
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Radyk MD, Nelson BS, Halbrook CJ, Wood A, Lavoie B, Salvatore L, Corfas G, Colacino JA, Shah YM, Crawford HC, Lyssiotis CA. Glucose-6-phosphate dehydrogenase deficiency accelerates pancreatic acinar-to-ductal metaplasia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.06.565895. [PMID: 37986898 PMCID: PMC10659312 DOI: 10.1101/2023.11.06.565895] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Activating mutations in KRAS extensively reprogram cellular metabolism to support the continuous growth, proliferation, and survival of pancreatic tumors. Targeting these metabolic dependencies are promising approaches for the treatment of established tumors. However, metabolic reprogramming is required early during tumorigenesis to provide transformed cells selective advantage towards malignancy. Acinar cells can give rise to pancreatic tumors through acinar-to-ductal metaplasia (ADM). Dysregulation of pathways that maintain acinar homeostasis accelerate tumorigenesis. During ADM, acinar cells transdifferentiate to duct-like cells, a process driven by oncogenic KRAS. The metabolic reprogramming that is required for the transdifferentiation in ADM is unclear. We performed transcriptomic analysis on mouse acinar cells undergoing ADM and found metabolic programs are globally enhanced, consistent with the transition of a specialized cell to a less differentiated phenotype with proliferative potential. Indeed, we and others have demonstrated how inhibiting metabolic pathways necessary for ADM can prevent transdifferentiation and tumorigenesis. Here, we also find NRF2-target genes are differentially expressed during ADM. Among these, we focused on the increase in the gene coding for NADPH-producing enzyme, Glucose-6-phosphate dehydrogenase (G6PD). Using established mouse models of KrasG12D-driven pancreatic tumorigenesis and G6PD-deficiency, we find that mutant G6pd accelerates ADM and pancreatic intraepithelial neoplasia. Acceleration of cancer initiation with G6PD-deficiency is dependent on its NADPH-generating function in reactive oxygen species (ROS) management, as opposed to other outputs of the pentose phosphate pathway. Together, this work provides new insights into the function of metabolic pathways during early tumorigenesis.
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Affiliation(s)
- Megan D. Radyk
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Barbara S. Nelson
- Doctoral Program in Cancer Biology, University of Michigan, Ann Arbor, USA
| | - Christopher J. Halbrook
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, USA
- University of California Irvine Chao Family Comprehensive Cancer Center, Orange, CA, USA
| | - Alexander Wood
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Brooke Lavoie
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Lucie Salvatore
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Gabriel Corfas
- Kresge Hearing Research Institute and Dept. of Otolaryngology, Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Justin A. Colacino
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
- Program in the Environment, College of Literature, Sciences, and the Arts, University of Michigan, Ann Arbor, MI, USA
- University of Michigan Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - Yatrik M. Shah
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
- University of Michigan Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, MI, USA
| | - Howard C. Crawford
- Department of Surgery, Henry Ford Pancreatic Cancer Center, Henry Ford Health System, Detroit, MI, USA
| | - Costas A. Lyssiotis
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
- University of Michigan Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, MI, USA
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6
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Cammareri P, Myant KB. Be like water, my cells: cell plasticity and the art of transformation. Front Cell Dev Biol 2023; 11:1272730. [PMID: 37886398 PMCID: PMC10598658 DOI: 10.3389/fcell.2023.1272730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023] Open
Abstract
Cellular plasticity defines the capacity of cells to adopt distinct identities during development, tissue homeostasis and regeneration. Dynamic fluctuations between different states, within or across lineages, are regulated by changes in chromatin accessibility and in gene expression. When deregulated, cellular plasticity can contribute to cancer initiation and progression. Cancer cells are remarkably plastic which contributes to phenotypic and functional heterogeneity within tumours as well as resistance to targeted therapies. It is for these reasons that the scientific community has become increasingly interested in understanding the molecular mechanisms governing cancer cell plasticity. The purpose of this mini-review is to discuss different examples of cellular plasticity associated with metaplasia and epithelial-mesenchymal transition with a focus on therapy resistance.
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Affiliation(s)
| | - Kevin B. Myant
- Cancer Research UK Scotland Centre, Institute of Genetics and Cancer, The University of Edinburgh, Edinburgh, United Kingdom
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Marstrand-Daucé L, Lorenzo D, Chassac A, Nicole P, Couvelard A, Haumaitre C. Acinar-to-Ductal Metaplasia (ADM): On the Road to Pancreatic Intraepithelial Neoplasia (PanIN) and Pancreatic Cancer. Int J Mol Sci 2023; 24:9946. [PMID: 37373094 PMCID: PMC10298625 DOI: 10.3390/ijms24129946] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Adult pancreatic acinar cells show high plasticity allowing them to change in their differentiation commitment. Pancreatic acinar-to-ductal metaplasia (ADM) is a cellular process in which the differentiated pancreatic acinar cells transform into duct-like cells. This process can occur as a result of cellular injury or inflammation in the pancreas. While ADM is a reversible process allowing pancreatic acinar regeneration, persistent inflammation or injury can lead to the development of pancreatic intraepithelial neoplasia (PanIN), which is a common precancerous lesion that precedes pancreatic ductal adenocarcinoma (PDAC). Several factors can contribute to the development of ADM and PanIN, including environmental factors such as obesity, chronic inflammation and genetic mutations. ADM is driven by extrinsic and intrinsic signaling. Here, we review the current knowledge on the cellular and molecular biology of ADM. Understanding the cellular and molecular mechanisms underlying ADM is critical for the development of new therapeutic strategies for pancreatitis and PDAC. Identifying the intermediate states and key molecules that regulate ADM initiation, maintenance and progression may help the development of novel preventive strategies for PDAC.
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Affiliation(s)
- Louis Marstrand-Daucé
- INSERM UMR1149, Inflammation Research Center (CRI), Université Paris Cité, 75018 Paris, France; (L.M.-D.); (D.L.); (A.C.); (P.N.); (A.C.)
| | - Diane Lorenzo
- INSERM UMR1149, Inflammation Research Center (CRI), Université Paris Cité, 75018 Paris, France; (L.M.-D.); (D.L.); (A.C.); (P.N.); (A.C.)
| | - Anaïs Chassac
- INSERM UMR1149, Inflammation Research Center (CRI), Université Paris Cité, 75018 Paris, France; (L.M.-D.); (D.L.); (A.C.); (P.N.); (A.C.)
- Department of Pathology, Bichat Hospital, Université Paris Cité, 75018 Paris, France
| | - Pascal Nicole
- INSERM UMR1149, Inflammation Research Center (CRI), Université Paris Cité, 75018 Paris, France; (L.M.-D.); (D.L.); (A.C.); (P.N.); (A.C.)
| | - Anne Couvelard
- INSERM UMR1149, Inflammation Research Center (CRI), Université Paris Cité, 75018 Paris, France; (L.M.-D.); (D.L.); (A.C.); (P.N.); (A.C.)
- Department of Pathology, Bichat Hospital, Université Paris Cité, 75018 Paris, France
| | - Cécile Haumaitre
- INSERM UMR1149, Inflammation Research Center (CRI), Université Paris Cité, 75018 Paris, France; (L.M.-D.); (D.L.); (A.C.); (P.N.); (A.C.)
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8
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Giarrizzo M, LaComb JF, Bialkowska AB. The Role of Krüppel-like Factors in Pancreatic Physiology and Pathophysiology. Int J Mol Sci 2023; 24:ijms24108589. [PMID: 37239940 DOI: 10.3390/ijms24108589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
Krüppel-like factors (KLFs) belong to the family of transcription factors with three highly conserved zinc finger domains in the C-terminus. They regulate homeostasis, development, and disease progression in many tissues. It has been shown that KLFs play an essential role in the endocrine and exocrine compartments of the pancreas. They are necessary to maintain glucose homeostasis and have been implicated in the development of diabetes. Furthermore, they can be a vital tool in enabling pancreas regeneration and disease modeling. Finally, the KLF family contains proteins that act as tumor suppressors and oncogenes. A subset of members has a biphasic function, being upregulated in the early stages of oncogenesis and stimulating its progression and downregulated in the late stages to allow for tumor dissemination. Here, we describe KLFs' function in pancreatic physiology and pathophysiology.
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Affiliation(s)
- Michael Giarrizzo
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY 11794, USA
| | - Joseph F LaComb
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY 11794, USA
| | - Agnieszka B Bialkowska
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY 11794, USA
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Liu M, Liu Q, Zou Q, Li J, Chu Z, Xiang J, Chen WQ, Miao ZF, Wang B. The composition and roles of gastric stem cells in epithelial homeostasis, regeneration, and tumorigenesis. Cell Oncol (Dordr) 2023:10.1007/s13402-023-00802-z. [PMID: 37010700 DOI: 10.1007/s13402-023-00802-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2023] [Indexed: 04/04/2023] Open
Abstract
The epithelial lining of the stomach undergoes rapid turnover to preserve its structural and functional integrity, a process driven by long-lived stem cells residing in the antral and corpus glands. Several subpopulations of gastric stem cells have been identified and their phenotypic and functional diversities linked to spatiotemporal specification of stem cells niches. Here, we review the biological features of gastric stem cells at various locations of the stomach under homeostatic conditions, as demonstrated by reporter mice, lineage tracing, and single cell sequencing. We also review the role of gastric stem cells in epithelial regeneration in response to injury. Moreover, we discuss emerging evidence demonstrating that accumulation of oncogenic drivers or alteration of stemness signaling pathways in gastric stem cells promotes gastric cancer. Given a fundamental role of the microenvironment, this review highlights the role reprogramming of niche components and signaling pathways under pathological conditions in dictating stem cell fate. Several outstanding issues are raised, such as the relevance of stem cell heterogeneity and plasticity, and epigenetic regulatory mechanisms, to Helicobacter pylori infection-initiated metaplasia-carcinogenesis cascades. With the development of spatiotemporal genomics, transcriptomics, and proteomics, as well as multiplexed screening and tracing approaches, we anticipate that more precise definition and characterization of gastric stem cells, and the crosstalk with their niche will be delineated in the near future. Rational exploitation and proper translation of these findings may bring forward novel modalities for epithelial rejuvenation and cancer therapeutics.
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Affiliation(s)
- Meng Liu
- Department of Gastroenterology, Chongqing University Cancer Hospital, Chongqing University Medical School, Chongqing, 400030, P. R. China
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China
| | - Qin Liu
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China
| | - Qiang Zou
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing University Medical School, Chongqing, 400030, P. R. China
| | - Jinyang Li
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China
| | - Zhaole Chu
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China
| | - Junyu Xiang
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China
| | - Wei-Qing Chen
- Department of Gastroenterology, Chongqing University Cancer Hospital, Chongqing University Medical School, Chongqing, 400030, P. R. China.
| | - Zhi-Feng Miao
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, 110001, P. R. China.
| | - Bin Wang
- Department of Gastroenterology & Chongqing Key Laboratory of Digestive Malignancies, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Branch Road, Yuzhong District, Chongqing, 400042, P. R. China.
- Institute of Pathology and Southwest Cancer Center, and Key Laboratory of Tumor Immunopathology of Ministry of Education of China, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, 400038, P. R. China.
- Jinfeng Laboratory, Chongqing, 401329, P. R. China.
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10
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Wizenty J, Sigal M. Gastric Stem Cell Biology and Helicobacter pylori Infection. Curr Top Microbiol Immunol 2023; 444:1-24. [PMID: 38231213 DOI: 10.1007/978-3-031-47331-9_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Helicobacter pylori colonizes the human gastric mucosa and persists lifelong. An interactive network between the bacteria and host cells shapes a unique microbial niche within gastric glands that alters epithelial behavior, leading to pathologies such as chronic gastritis and eventually gastric cancer. Gland colonization by the bacterium initiates aberrant trajectories by inducing long-term inflammatory and regenerative gland responses, which involve various specialized epithelial and stromal cells. Recent studies using cell lineage tracing, organoids and scRNA-seq techniques have significantly advanced our knowledge of the molecular "identity" of epithelial and stromal cell subtypes during normal homeostasis and upon infection, and revealed the principles that underly stem cell (niche) behavior under homeostatic conditions as well as upon H. pylori infection. The activation of long-lived stem cells deep in the gastric glands has emerged as a key prerequisite of H. pylori-associated gastric site-specific pathologies such as hyperplasia in the antrum, and atrophy or metaplasia in the corpus, that are considered premalignant lesions. In addition to altering the behaviour of bona fide stem cells, injury-driven de-differentiation and trans-differentation programs, such as "paligenosis", subsequently allow highly specialized secretory cells to re-acquire stem cell functions, driving gland regeneration. This plastic regenerative capacity of gastric glands is required to maintain homeostasis and repair mucosal injuries. However, these processes are co-opted in the context of stepwise malignant transformation in chronic H. pylori infection, causing the emergence, selection and expansion of cancer-promoting stem cells.
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Affiliation(s)
- Jonas Wizenty
- Division of Gastroenterology and Hepatology, Medical Department, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Sigal
- Division of Gastroenterology and Hepatology, Medical Department, Charité-Universitätsmedizin Berlin, Berlin, Germany.
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Ahmadi S, Dadashpour M, Abri A, Zarghami N. Long-term proliferation and delayed senescence of bone marrow-derived human mesenchymal stem cells on metformin co-embedded HA/Gel electrospun composite nanofibers. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Venkitachalam S, Babu D, Ravillah D, Katabathula RM, Joseph P, Singh S, Udhayakumar B, Miao Y, Martinez-Uribe O, Hogue JA, Kresak AM, Dawson D, LaFramboise T, Willis JE, Chak A, Garman KS, Blum AE, Varadan V, Guda K. The Ephrin B2 Receptor Tyrosine Kinase Is a Regulator of Proto-oncogene MYC and Molecular Programs Central to Barrett's Neoplasia. Gastroenterology 2022; 163:1228-1241. [PMID: 35870513 PMCID: PMC9613614 DOI: 10.1053/j.gastro.2022.07.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 06/20/2022] [Accepted: 07/12/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND & AIMS Mechanisms contributing to the onset and progression of Barrett's (BE)-associated esophageal adenocarcinoma (EAC) remain elusive. Here, we interrogated the major signaling pathways deregulated early in the development of Barrett's neoplasia. METHODS Whole-transcriptome RNA sequencing analysis was performed in primary BE, EAC, normal esophageal squamous, and gastric biopsy tissues (n = 89). Select pathway components were confirmed by quantitative polymerase chain reaction in an independent cohort of premalignant and malignant biopsy tissues (n = 885). Functional impact of selected pathway was interrogated using transcriptomic, proteomic, and pharmacogenetic analyses in mammalian esophageal organotypic and patient-derived BE/EAC cell line models, in vitro and/or in vivo. RESULTS The vast majority of primary BE/EAC tissues and cell line models showed hyperactivation of EphB2 signaling. Transcriptomic/proteomic analyses identified EphB2 as an endogenous binding partner of MYC binding protein 2, and an upstream regulator of c-MYC. Knockdown of EphB2 significantly impeded the viability/proliferation of EAC and BE cells in vitro/in vivo. Activation of EphB2 in normal esophageal squamous 3-dimensional organotypes disrupted epithelial maturation and promoted columnar differentiation programs, notably including MYC. EphB2 and MYC showed selective induction in esophageal submucosal glands with acinar ductal metaplasia, and in a porcine model of BE-like esophageal submucosal gland spheroids. Clinically approved inhibitors of MEK, a protein kinase that regulates MYC, effectively suppressed EAC tumor growth in vivo. CONCLUSIONS The EphB2 signaling is frequently hyperactivated across the BE-EAC continuum. EphB2 is an upstream regulator of MYC, and activation of EphB2-MYC axis likely precedes BE development. Targeting EphB2/MYC could be a promising therapeutic strategy for this often refractory and aggressive cancer.
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Affiliation(s)
- Srividya Venkitachalam
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Deepak Babu
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Durgadevi Ravillah
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Ramachandra M Katabathula
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Peronne Joseph
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Salendra Singh
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Bhavatharini Udhayakumar
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Yanling Miao
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Omar Martinez-Uribe
- Division of Gastroenterology, Department of Medicine, Duke University, Durham, North Carolina
| | - Joyce A Hogue
- Division of Gastroenterology, Department of Medicine, Duke University, Durham, North Carolina
| | - Adam M Kresak
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Dawn Dawson
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Thomas LaFramboise
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Joseph E Willis
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Amitabh Chak
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Katherine S Garman
- Division of Gastroenterology, Department of Medicine, Duke University, Durham, North Carolina
| | - Andrew E Blum
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio; Division of Gastroenterology, Northeast Ohio Veteran Affairs Healthcare System, Cleveland, Ohio
| | - Vinay Varadan
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio.
| | - Kishore Guda
- Division of General Medical Sciences-Oncology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio; Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio.
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13
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Zeng Y, Jin RU. Molecular pathogenesis, targeted therapies, and future perspectives for gastric cancer. Semin Cancer Biol 2022; 86:566-582. [PMID: 34933124 DOI: 10.1016/j.semcancer.2021.12.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/29/2021] [Accepted: 12/11/2021] [Indexed: 01/27/2023]
Abstract
Gastric cancer is a major source of global cancer mortality with limited treatment options and poor patient survival. As our molecular understanding of gastric cancer improves, we are now beginning to recognize that these cancers are a heterogeneous group of diseases with incredibly unique pathogeneses and active oncogenic pathways. It is this molecular diversity and oftentimes lack of common oncogenic driver mutations that bestow the poor treatment responses that oncologists often face when treating gastric cancer. In this review, we will examine the treatments for gastric cancer including up-to-date molecularly targeted therapies and immunotherapies. We will then review the molecular subtypes of gastric cancer to highlight the diversity seen in this disease. We will then shift our discussion to basic science and gastric cancer mouse models as tools to study gastric cancer molecular heterogeneity. Furthermore, we will elaborate on a molecular process termed paligenosis and the cyclical hit model as key events during gastric cancer initiation that impart nondividing mature differentiated cells the ability to re-enter the cell cycle and accumulate disparate genomic mutations during years of chronic inflammation and injury. As our basic science understanding of gastric cancer advances, so too must our translational and clinical efforts. We will end with a discussion regarding single-cell molecular analyses and cancer organoid technologies as future translational avenues to advance our understanding of gastric cancer heterogeneity and to design precision-based gastric cancer treatments. Elucidation of interpatient and intratumor heterogeneity is the only way to advance future cancer prevention, diagnoses and treatment.
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Affiliation(s)
- Yongji Zeng
- Section of Gastroenterology, Department of Medicine, Baylor College of Medicine, Houston, USA
| | - Ramon U Jin
- Section of Hematology/Oncology, Department of Medicine, Baylor College of Medicine, Houston, USA.
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14
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Souza RF, Spechler SJ. Mechanisms and pathophysiology of Barrett oesophagus. Nat Rev Gastroenterol Hepatol 2022; 19:605-620. [PMID: 35672395 DOI: 10.1038/s41575-022-00622-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/22/2022] [Indexed: 01/10/2023]
Abstract
Barrett oesophagus, in which a metaplastic columnar mucosa that can predispose individuals to cancer development lines a portion of the distal oesophagus, is the only known precursor of oesophageal adenocarcinoma, the incidence of which has increased profoundly over the past several decades. Most evidence suggests that Barrett oesophagus develops from progenitor cells at the oesophagogastric junction that proliferate and undergo epithelial-mesenchymal transition as part of a wound-healing process that replaces oesophageal squamous epithelium damaged by gastroesophageal reflux disease (GERD). GERD also seems to induce reprogramming of key transcription factors in the progenitor cells, resulting in the development of the specialized intestinal metaplasia that is characteristic of Barrett oesophagus, probably through an intermediate step of metaplasia to cardiac mucosa. Genome-wide association studies suggest that patients with GERD who develop Barrett oesophagus might have an inherited predisposition to oesophageal metaplasia and that there is a shared genetic susceptibility to Barrett oesophagus and to several of its risk factors (such as GERD, obesity and cigarette smoking). In this Review, we discuss the mechanisms, pathophysiology, genetic predisposition and cells of origin of Barrett oesophagus, and opine on the clinical implications and future research directions.
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Affiliation(s)
- Rhonda F Souza
- Division of Gastroenterology, Center for Oesophageal Diseases, Baylor University Medical Center, Dallas, TX, USA. .,Center for Oesophageal Research, Baylor Scott & White Research Institute, Dallas, TX, USA.
| | - Stuart J Spechler
- Division of Gastroenterology, Center for Oesophageal Diseases, Baylor University Medical Center, Dallas, TX, USA.,Center for Oesophageal Research, Baylor Scott & White Research Institute, Dallas, TX, USA
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15
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Adkins-Threats M, Mills JC. Cell plasticity in regeneration in the stomach and beyond. Curr Opin Genet Dev 2022; 75:101948. [PMID: 35809361 PMCID: PMC10378711 DOI: 10.1016/j.gde.2022.101948] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/29/2022] [Accepted: 06/01/2022] [Indexed: 11/30/2022]
Abstract
Recent studies using cell lineage-tracing techniques, organoids, and single-cell RNA sequencing analyses have revealed: 1) adult organs use cell plasticity programs to recruit progenitor cells to regenerate tissues after injury, and 2) plasticity is far more common than previously thought, even in homeostasis. Here, we focus on the complex interplay of normal stem cell differentiation and plasticity in homeostasis and after injury, using the gastric epithelium as a touchstone. We also examine common features of regenerative programs and discuss the evolutionarily conserved, stepwise process of paligenosis which reprograms mature cells into progenitors that can repair damaged tissue. Finally, we discuss how conserved plasticity programs may help us better understand pathological processes like metaplasia.
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Affiliation(s)
- Mahliyah Adkins-Threats
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, USA. https://twitter.com/@madkinsthreats
| | - Jason C Mills
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, USA; Department of Pathology & Immunology, Baylor College of Medicine, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, USA.
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16
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Shah K, Maradana MR, Joaquina Delàs M, Metidji A, Graelmann F, Llorian M, Chakravarty P, Li Y, Tolaini M, Shapiro M, Kelly G, Cheshire C, Bhurta D, Bharate SB, Stockinger B. Cell-intrinsic Aryl Hydrocarbon Receptor signalling is required for the resolution of injury-induced colonic stem cells. Nat Commun 2022; 13:1827. [PMID: 35383166 PMCID: PMC8983642 DOI: 10.1038/s41467-022-29098-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 02/23/2022] [Indexed: 12/17/2022] Open
Abstract
The aryl hydrocarbon receptor (AHR) is an environmental sensor that integrates microbial and dietary cues to influence physiological processes within the intestinal microenvironment, protecting against colitis and colitis-associated colorectal cancer development. Rapid tissue regeneration upon injury is important for the reinstatement of barrier integrity and its dysregulation promotes malignant transformation. Here we show that AHR is important for the termination of the regenerative response and the reacquisition of mature epithelial cell identity post injury in vivo and in organoid cultures in vitro. Using an integrative multi-omics approach in colon organoids, we show that AHR is required for timely termination of the regenerative response through direct regulation of transcription factors involved in epithelial cell differentiation as well as restriction of chromatin accessibility to regeneration-associated Yap/Tead transcriptional targets. Safeguarding a regulated regenerative response places AHR at a pivotal position in the delicate balance between controlled regeneration and malignant transformation. Rapid intestinal regeneration after injury is critical to maintain barrier integrity and homeostasis, but must be tightly controlled to prevent tumorigenesis. Here they show that the aryl hydrocarbon receptor is required to terminate the regenerative response after wound healing.
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Affiliation(s)
| | | | | | - Amina Metidji
- Department of Oncology, St Jude Children's Hospital, Memphis, TN, USA
| | - Frederike Graelmann
- Immunology and Environment, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany
| | | | | | - Ying Li
- The Francis Crick Institute, London, UK
| | | | | | | | | | - Deendyal Bhurta
- Natural Products & Medicinal Chemistry Division, CSIR - Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
| | - Sandip B Bharate
- Natural Products & Medicinal Chemistry Division, CSIR - Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
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17
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Abstract
Complex multicellular organisms have evolved specific mechanisms to replenish cells in homeostasis and during repair. Here, we discuss how emerging technologies (e.g., single-cell RNA sequencing) challenge the concept that tissue renewal is fueled by unidirectional differentiation from a resident stem cell. We now understand that cell plasticity, i.e., cells adaptively changing differentiation state or identity, is a central tissue renewal mechanism. For example, mature cells can access an evolutionarily conserved program (paligenosis) to reenter the cell cycle and regenerate damaged tissue. Most tissues lack dedicated stem cells and rely on plasticity to regenerate lost cells. Plasticity benefits multicellular organisms, yet it also carries risks. For one, when long-lived cells undergo paligenotic, cyclical proliferation and redif-ferentiation, they can accumulate and propagate acquired mutations that activate oncogenes and increase the potential for developing cancer. Lastly, we propose a new framework for classifying patterns of cell proliferation in homeostasis and regeneration, with stem cells representing just one of the diverse methods that adult tissues employ.
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Affiliation(s)
- Jeffrey W. Brown
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Charles J. Cho
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA,Current affiliation: Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Jason C. Mills
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA,Current affiliation: Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA,Departments of Pathology and Immunology and Developmental Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA,Current affiliation: Departments of Medicine, Pathology and Immunology, and Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
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18
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Sáenz JB, Vargas N, Cho CJ, Mills JC. Regulation of the double-stranded RNA response through ADAR1 licenses metaplastic reprogramming in gastric epithelium. JCI Insight 2022; 7:153511. [PMID: 35132959 PMCID: PMC8855806 DOI: 10.1172/jci.insight.153511] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 12/15/2021] [Indexed: 01/17/2023] Open
Abstract
Cells recognize both foreign and host-derived double-stranded RNA (dsRNA) via a signaling pathway that is usually studied in the context of viral infection. It has become increasingly clear that the sensing and handling of endogenous dsRNA is also critical for cellular differentiation and development. The adenosine RNA deaminase, ADAR1, has been implicated as a central regulator of the dsRNA response, but how regulation of the dsRNA response might mediate cell fate during injury and whether such signaling is cell intrinsic remain unclear. Here, we show that the ADAR1-mediated response to dsRNA was dramatically induced in 2 distinct injury models of gastric metaplasia. Mouse organoid and in vivo genetic models showed that ADAR1 coordinated a cell-intrinsic, epithelium-autonomous, and interferon signaling–independent dsRNA response. In addition, dsRNA accumulated within a differentiated epithelial population (chief cells) in mouse and human stomachs as these cells reprogrammed to a proliferative, reparative (metaplastic) state. Finally, chief cells required ADAR1 to reenter the cell cycle during metaplasia. Thus, cell-intrinsic ADAR1 signaling is critical for the induction of metaplasia. Because metaplasia increases cancer risk, these findings support roles for ADAR1 and the response to dsRNA in oncogenesis.
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Affiliation(s)
- José B Sáenz
- Division of Gastroenterology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Nancy Vargas
- Division of Gastroenterology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Charles J Cho
- Section of Gastroenterology and Hepatology, Department of Medicine
| | - Jason C Mills
- Section of Gastroenterology and Hepatology, Department of Medicine.,Department of Pathology and Immunology; and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
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19
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Goldenring JR, Mills JC. Cellular Plasticity, Reprogramming, and Regeneration: Metaplasia in the Stomach and Beyond. Gastroenterology 2022; 162:415-430. [PMID: 34728185 PMCID: PMC8792220 DOI: 10.1053/j.gastro.2021.10.036] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 10/21/2021] [Accepted: 10/24/2021] [Indexed: 02/03/2023]
Abstract
The mucosa of the body of the stomach (ie, the gastric corpus) uses 2 overlapping, depth-dependent mechanisms to respond to injury. Superficial injury heals via surface cells with histopathologic changes like foveolar hyperplasia. Deeper, usually chronic, injury/inflammation, most frequently induced by the carcinogenic bacteria Helicobacter pylori, elicits glandular histopathologic alterations, initially manifesting as pyloric (also known as pseudopyloric) metaplasia. In this pyloric metaplasia, corpus glands become antrum (pylorus)-like with loss of acid-secreting parietal cells (atrophic gastritis), expansion of foveolar cells, and reprogramming of digestive enzyme-secreting chief cells into deep antral gland-like mucous cells. After acute parietal cell loss, chief cells can reprogram through an orderly stepwise progression (paligenosis) initiated by interleukin-13-secreting innate lymphoid cells (ILC2s). First, massive lysosomal activation helps mitigate reactive oxygen species and remove damaged organelles. Second, mucus and wound-healing proteins (eg, TFF2) and other transcriptional alterations are induced, at which point the reprogrammed chief cells are recognized as mucus-secreting spasmolytic polypeptide-expressing metaplasia cells. In chronic severe injury, glands with pyloric metaplasia can harbor both actively proliferating spasmolytic polypeptide-expressing metaplasia cells and eventually intestine-like cells. Gastric glands with such lineage confusion (mixed incomplete intestinal metaplasia and proliferative spasmolytic polypeptide-expressing metaplasia) may be at particular risk for progression to dysplasia and cancer. A pyloric-like pattern of metaplasia after injury also occurs in other gastrointestinal organs including esophagus, pancreas, and intestines, and the paligenosis program itself seems broadly conserved across tissues and species. Here we discuss aspects of metaplasia in stomach, incorporating data derived from animal models and work on human cells and tissues in correlation with diagnostic and clinical implications.
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Affiliation(s)
- James R Goldenring
- Nashville Veterans Affairs Medical Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Section of Surgical Sciences, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
| | - Jason C Mills
- Section of Gastroenterology and Hepatology, Baylor College of Medicine, Houston, Texas; Department of Medicine, Baylor College of Medicine, Houston, Texas; Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas.
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20
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Azari-Yam A, Alimadadi H, Safavi M. Juvenile Polyps with Osseous Metaplasia: Report of Two Pediatric Cases and Review of the Literature. Fetal Pediatr Pathol 2022; 41:166-170. [PMID: 32406794 DOI: 10.1080/15513815.2020.1761916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Osseous metaplasia is considered as a response to insults such as chronic inflammation or mucin extravasation in colorectal polyps. CASE REPORT we report two cases of osseous metaplasia in juvenile (retention) polyps as incidental histopathological findings in a case of rectal juvenile polyposis and a patient with solitary rectal juvenile polyp. CONCLUSION Osseous metaplasia can occur in colorectal juvenile polyps and is considered a probable response to mucin extravasation and/or chronic inflammation. The clinical and prognostic significance of osseous metaplasia in these polyps is unknown.
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Affiliation(s)
- Aileen Azari-Yam
- Pathology Department, Children Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hosein Alimadadi
- Pediatrics Gastroenterology Department, Children Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Moeinadin Safavi
- Pathology Department, Children Medical Center, Tehran University of Medical Sciences, Tehran, Iran
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21
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Time to Classify Tumours of the Stomach and the Kidneys According to Cell of Origin. Int J Mol Sci 2021; 22:ijms222413386. [PMID: 34948181 PMCID: PMC8707540 DOI: 10.3390/ijms222413386] [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: 11/03/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 12/18/2022] Open
Abstract
Malignant tumours are traditionally classified according to their organ of origin and whether they are of epithelial (carcinomas) or mesenchymal (sarcomas) origin. By histological appearance the site of origin may often be confirmed. Using same treatment for tumours from the same organ is rational only when there is no principal heterogeneity between the tumours of that organ. Organ tumour heterogeneity is typical for the lungs with small cell and non-small cell tumours, for the kidneys where clear cell renal carcinoma (CCRCC) is the dominating type among other subgroups, and in the stomach with adenocarcinomas of intestinal and diffuse types. In addition, a separate type of neuroendocrine tumours (NETs) is found in most organs. Every cell type able to divide may develop into a tumour, and the different subtypes most often reflect different cell origin. In this article the focus is on the cells of origin in tumours arising in the stomach and kidneys and the close relationship between normal neuroendocrine cells and NETs. Furthermore, that the erythropoietin producing cell may be the cell of origin of CCRCC (a cancer with many similarities to NETs), and that gastric carcinomas of diffuse type may originate from the ECL cell, whereas the endodermal stem cell most probably gives rise to cancers of intestinal type.
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22
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Sáenz JB. Follow the Metaplasia: Characteristics and Oncogenic Implications of Metaplasia's Pattern of Spread Throughout the Stomach. Front Cell Dev Biol 2021; 9:741574. [PMID: 34869328 PMCID: PMC8633114 DOI: 10.3389/fcell.2021.741574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/29/2021] [Indexed: 12/12/2022] Open
Abstract
The human stomach functions as both a digestive and innate immune organ. Its main product, acid, rapidly breaks down ingested products and equally serves as a highly effective microbial filter. The gastric epithelium has evolved mechanisms to appropriately handle the myriad of injurious substances, both exogenous and endogenous, to maintain the epithelial barrier and restore homeostasis. The most significant chronic insult that the stomach must face is Helicobacter pylori (Hp), a stomach-adapted bacterium that can colonize the stomach and induce chronic inflammatory and pre-neoplastic changes. The progression from chronic inflammation to dysplasia relies on the decades-long interplay between this oncobacterium and its gastric host. This review summarizes the functional and molecular regionalization of the stomach at homeostasis and details how chronic inflammation can lead to characteristic alterations in these developmental demarcations, both at the topographic and glandular levels. More importantly, this review illustrates our current understanding of the epithelial mechanisms that underlie the pre-malignant gastric landscape, how Hp adapts to and exploits these changes, and the clinical implications of identifying these changes in order to stratify patients at risk of developing gastric cancer, a leading cause of cancer-related deaths worldwide.
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Affiliation(s)
- José B Sáenz
- Division of Gastroenterology, Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, MO, United States
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23
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Douchi D, Yamamura A, Matsuo J, Melissa Lim YH, Nuttonmanit N, Shimura M, Suda K, Chen S, Pang S, Kohu K, Abe T, Shioi G, Kim G, Shabbir A, Srivastava S, Unno M, Bok-Yan So J, Teh M, Yeoh KG, Chuang LSH, Ito Y. Induction of Gastric Cancer by Successive Oncogenic Activation in the Corpus. Gastroenterology 2021; 161:1907-1923.e26. [PMID: 34391772 DOI: 10.1053/j.gastro.2021.08.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 07/17/2021] [Accepted: 08/09/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND & AIMS Metaplasia and dysplasia in the corpus are reportedly derived from de-differentiation of chief cells. However, the cellular origin of metaplasia and cancer remained uncertain. Therefore, we investigated whether pepsinogen C (PGC) transcript-expressing cells represent the cellular origin of metaplasia and cancer using a novel Pgc-specific CreERT2 recombinase mouse model. METHODS We generated a Pgc-mCherry-IRES-CreERT2 (Pgc-CreERT2) knock-in mouse model. Pgc-CreERT2/+ and Rosa-EYFP mice were crossed to generate Pgc-CreERT2/Rosa-EYFP (Pgc-CreERT2/YFP) mice. Gastric tissues were collected, followed by lineage-tracing experiments and histologic and immunofluorescence staining. We further established Pgc-CreERT2;KrasG12D/+ mice and investigated whether PGC transcript-expressing cells are responsible for the precancerous state in gastric glands. To investigate cancer development from PGC transcript-expressing cells with activated Kras, inactivated Apc, and Trp53 signaling pathways, we crossed Pgc-CreERT2/+ mice with conditional KrasG12D, Apcflox, Trp53flox mice. RESULTS Expectedly, mCherry mainly labeled chief cells in the Pgc-CreERT2 mice. However, mCherry was also detected throughout the neck cell and isthmal stem/progenitor regions, albeit at lower levels. In the Pgc-CreERT2;KrasG12D/+ mice, PGC transcript-expressing cells with KrasG12D/+ mutation presented pseudopyloric metaplasia. The early induction of proliferation at the isthmus may reflect the ability of isthmal progenitors to react rapidly to Pgc-driven KrasG12D/+ oncogenic mutation. Furthermore, Pgc-CreERT2;KrasG12D/+;Apcflox/flox mice presented intramucosal dysplasia/carcinoma and Pgc-CreERT2;KrasG12D/+;Apcflox/flox;Trp53flox/flox mice presented invasive and metastatic gastric carcinoma. CONCLUSIONS The Pgc-CreERT2 knock-in mouse is an invaluable tool to study the effects of successive oncogenic activation in the mouse corpus. Time-course observations can be made regarding the responses of isthmal and chief cells to oncogenic insults. We can observe stomach-specific tumorigenesis from the beginning to metastatic development.
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Affiliation(s)
- Daisuke Douchi
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Akihiro Yamamura
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Junichi Matsuo
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Yi Hui Melissa Lim
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Napat Nuttonmanit
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Mitsuhiro Shimura
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazuto Suda
- Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Sabirah Chen
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - ShuChin Pang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Kazuyoshi Kohu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Takaya Abe
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Go Shioi
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Guowei Kim
- Department of Surgery, National University Health System, National University of Singapore, Singapore
| | - Asim Shabbir
- Department of Surgery, National University Health System, National University of Singapore, Singapore
| | | | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Jimmy Bok-Yan So
- Department of Surgery, National University Health System, National University of Singapore, Singapore
| | - Ming Teh
- Department of Pathology, National University of Singapore, Singapore
| | - Khay Guan Yeoh
- Department of Medicine, National University of Singapore, Singapore
| | | | - Yoshiaki Ito
- Cancer Science Institute of Singapore, National University of Singapore, Singapore.
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24
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Doorbar J, Zheng K, Aiyenuro A, Yin W, Walker CM, Chen Y, Egawa N, Griffin HM. Principles of epithelial homeostasis control during persistent human papillomavirus infection and its deregulation at the cervical transformation zone. Curr Opin Virol 2021; 51:96-105. [PMID: 34628359 DOI: 10.1016/j.coviro.2021.09.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 12/22/2022]
Abstract
Human papillomaviruses establish a reservoir of infection in the epithelial basal layer. To do this they limit their gene expression to avoid immune detection and modulate epithelial homeostasis pathways to inhibit the timing of basal cell delamination and differentiation to favour persistence. For low-risk Alpha papillomaviruses, which cause benign self-limiting disease in immunocompetent individuals, it appears that cell competition at the lesion edge restricts expansion. These lesions may be considered as self-regulating homeostatic structures, with epithelial cells of the hair follicles and sweat glands, which are proposed targets of the Beta and Mu papillomaviruses, showing similar restrictions to their expansion across the epithelium as a whole. In the absence of immune control, which facilitates deregulated viral gene expression, such lesions can expand, leading to problematic papillomatosis in afflicted individuals. By contrast, he high-risk Alpha HPV types can undergo deregulated viral gene expression in immunocompetent hosts at a number of body sites, including the cervical transformation zone (TZ) where they can drive the formation of neoplasia. Homeostasis at the TZ is poorly understood, but involves two adjacent epithelial cell population, one of which has the potential to stratify and to produce a multilayed squamous epithelium. This process of metaplasia involves a specialised cell type known as the reserve cell, which has for several decades been considered as the cell of origin of cervical cancer. It is becoming clear that during evolution, HPV gene products have acquired functions directly linked to their requirements to modify the normal processes of epithelial homestasis at their various sites of infection. These protein functions are beginning to provide new insight into homeostasis regulation at different body sites, and are likely to be central to our understanding of HPV epithelial tropisms.
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Affiliation(s)
- John Doorbar
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom.
| | - Ke Zheng
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
| | - Ademola Aiyenuro
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
| | - Wen Yin
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
| | - Caroline M Walker
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
| | - Yuwen Chen
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
| | - Nagayasu Egawa
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
| | - Heather M Griffin
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB8 9UP, United Kingdom
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Papaefthymiou A, Christodoulidis G, Koffas A, Doulberis M, Polyzos SA, Manolakis A, Potamianos S, Kapsoritakis A, Kountouras J. Role of autophagy in gastric carcinogenesis. World J Gastrointest Oncol 2021; 13:1244-1262. [PMID: 34721765 PMCID: PMC8529927 DOI: 10.4251/wjgo.v13.i10.1244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/06/2021] [Accepted: 08/02/2021] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer represents a common and highly fatal malignancy, and thus a pathophysiology-based reconsideration is necessary, given the absence of efficient therapeutic regimens. In this regard, emerging data reveal a significant role of autophagy in gastric oncogenesis, progression, metastasis and chemoresistance. Although autophagy comprises a normal primordial process, ensuring cellular homeostasis under energy depletion and stress conditions, alterations at any stage of the complex regulatory system could stimulate a tumorigenic and promoting cascade. Among others, Helicobacter pylori infection induces a variety of signaling molecules modifying autophagy, during acute infection or after chronic autophagy degeneration. Subsequently, defective autophagy allows malignant transformation and upon cancer establishment, an overactive autophagy is stimulated. This overexpressed autophagy provides energy supplies and resistance mechanisms to gastric cancer cells against hosts defenses and anticancer treatment. This review interprets the implicated autophagic pathways in normal cells and in gastric cancer to illuminate the potential preventive, therapeutic and prognostic benefits of understanding and intervening autophagy.
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Affiliation(s)
- Apostolis Papaefthymiou
- Department of Gastroenterology, University Hospital of Larissa, Larissa 41110, Thessaly, Greece
- First Laboratory of Pharmacology, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece
- Department of Medicine, Second Medical Clinic, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki 54642, Macedonia, Greece
| | | | - Apostolos Koffas
- Department of Gastroenterology, University Hospital of Larissa, Larissa 41110, Thessaly, Greece
| | - Michael Doulberis
- First Laboratory of Pharmacology, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece
- Department of Medicine, Second Medical Clinic, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki 54642, Macedonia, Greece
- Division of Gastroenterology and Hepatology, Medical University Department, Kantonsspital Aarau, Aarau 5001, Switzerland
| | - Stergios A Polyzos
- First Laboratory of Pharmacology, Aristotle University of Thessaloniki, Thessaloniki 54124, Macedonia, Greece
| | - Anastasios Manolakis
- Department of Gastroenterology, University Hospital of Larissa, Larissa 41110, Thessaly, Greece
| | - Spyros Potamianos
- Department of Gastroenterology, University Hospital of Larissa, Larissa 41110, Thessaly, Greece
| | - Andreas Kapsoritakis
- Department of Gastroenterology, University Hospital of Larissa, Larissa 41110, Thessaly, Greece
| | - Jannis Kountouras
- Department of Medicine, Second Medical Clinic, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki 54642, Macedonia, Greece
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Mesquita da Silva K, Rattes IC, Pereira GMA, Gama P. Lifelong Adaptation of Gastric Cell Proliferation and Mucosa Structure to Early Weaning-Induced Effects. Front Physiol 2021; 12:721242. [PMID: 34588994 PMCID: PMC8475651 DOI: 10.3389/fphys.2021.721242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/12/2021] [Indexed: 11/13/2022] Open
Abstract
The gastric mucosa is disturbed when breastfeeding is interrupted, and such early weaning (EW) condition permanently affects the differentiation of zymogenic cells. The aim of the study was to evaluate the immediate and long-term effects of EW on gastric cell proliferation, considering the molecular markers for cell cycle, inflammation, and metaplasia. Overall, we investigated the lifelong adaptation of gastric growth. Wistar rats were divided into suckling-control (S) and EW groups, and gastric samples were collected at 18, 30, and 60 days for morphology, RNA, and protein isolation. Inflammation and metaplasia were not identified, but we observed that EW promptly increased Ki-67-proliferative index (PI) and mucosa thickness (18 days). From 18 to 30 days, PI increased in S rats, whereas it was stable in EW animals, and such developmental change in S made its PI higher than in EW. At 60 days, the PI decreased in S, making the indices similar between groups. Spatially, during development, proliferative cells spread along the gland, whereas, in adults, they concentrate at the isthmus-neck area. EW pushed dividing cells to this compartment (18 days), increased PI at the gland base (60 days), but it did not interfere in expression of cell cycle molecules. At 18 days, EW reduced Tgfβ2, Tgfβ3, and Tgfbr2 and TβRII and p27 levels, which might regulate the proliferative increase at this age. We demonstrated that gastric cell proliferation is immediately upregulated by EW, corroborating previous results, but for the first time, we showed that such increased PI is stable during growth and aging. We suggest that suckling and early weaning might use TGFβs and p27 to trigger different proliferative profiles during life course.
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Affiliation(s)
- Kethleen Mesquita da Silva
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Isadora Campos Rattes
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Gizela Maria Agostini Pereira
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Patrícia Gama
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Radyk MD, Spatz LB, Peña BL, Brown JW, Burclaff J, Cho CJ, Kefalov Y, Shih C, Fitzpatrick JAJ, Mills JC. ATF3 induces RAB7 to govern autodegradation in paligenosis, a conserved cell plasticity program. EMBO Rep 2021; 22:e51806. [PMID: 34309175 PMCID: PMC8419698 DOI: 10.15252/embr.202051806] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 06/04/2021] [Accepted: 06/18/2021] [Indexed: 12/20/2022] Open
Abstract
Differentiated cells across multiple species and organs can re-enter the cell cycle to aid in injury-induced tissue regeneration by a cellular program called paligenosis. Here, we show that activating transcription factor 3 (ATF3) is induced early during paligenosis in multiple cellular contexts, transcriptionally activating the lysosomal trafficking gene Rab7b. ATF3 and RAB7B are upregulated in gastric and pancreatic digestive-enzyme-secreting cells at the onset of paligenosis Stage 1, when cells massively induce autophagic and lysosomal machinery to dismantle differentiated cell morphological features. Their expression later ebbs before cells enter mitosis during Stage 3. Atf3-/- mice fail to induce RAB7-positive autophagic and lysosomal vesicles, eventually causing increased death of cells en route to Stage 3. Finally, we observe that ATF3 is expressed in human gastric metaplasia and during paligenotic injury across multiple other organs and species. Thus, our findings indicate ATF3 is an evolutionarily conserved gene orchestrating the early paligenotic autodegradative events that must occur before cells are poised to proliferate and contribute to tissue repair.
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Affiliation(s)
- Megan D Radyk
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Lillian B Spatz
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Bianca L Peña
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Jeffrey W Brown
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Joseph Burclaff
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Charles J Cho
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Yan Kefalov
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
| | - Chien‐Cheng Shih
- Washington University Center for Cellular ImagingWashington University School of MedicineSt. LouisMOUSA
| | - James AJ Fitzpatrick
- Washington University Center for Cellular ImagingWashington University School of MedicineSt. LouisMOUSA
- Departments of Neuroscience and Cell Biology & PhysiologyWashington University School of MedicineSt. LouisMOUSA
- Department of Biomedical EngineeringWashington University in St. LouisSt. LouisMOUSA
| | - Jason C Mills
- Division of GastroenterologyDepartment of MedicineWashington University School of MedicineSt. LouisMOUSA
- Department of Developmental BiologyWashington University School of MedicineSt. LouisMOUSA
- Department of Pathology and ImmunologyWashington University School of MedicineSt. LouisMOUSA
- Present address:
Section of Gastroenterology and HepatologyDepartments of Medicine and PathologyBaylor College of MedicineHoustonTXUSA
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28
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Tata A, Chow RD, Tata PR. Epithelial cell plasticity: breaking boundaries and changing landscapes. EMBO Rep 2021; 22:e51921. [PMID: 34096150 DOI: 10.15252/embr.202051921] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 05/08/2021] [Accepted: 05/18/2021] [Indexed: 12/17/2022] Open
Abstract
Epithelial tissues respond to a wide variety of environmental and genotoxic stresses. As an adaptive mechanism, cells can deviate from their natural paths to acquire new identities, both within and across lineages. Under extreme conditions, epithelial tissues can utilize "shape-shifting" mechanisms whereby they alter their form and function at a tissue-wide scale. Mounting evidence suggests that in order to acquire these alternate tissue identities, cells follow a core set of "tissue logic" principles based on developmental paradigms. Here, we review the terminology and the concepts that have been put forward to describe cell plasticity. We also provide insights into various cell intrinsic and extrinsic factors, including genetic mutations, inflammation, microbiota, and therapeutic agents that contribute to cell plasticity. Additionally, we discuss recent studies that have sought to decode the "syntax" of plasticity-i.e., the cellular and molecular principles through which cells acquire new identities in both homeostatic and malignant epithelial tissues-and how these processes can be manipulated for developing novel cancer therapeutics.
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Affiliation(s)
- Aleksandra Tata
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Ryan D Chow
- Department of Genetics, Systems Biology Institute, Medical Scientist Training Program, Yale University School of Medicine, New Haven, CT, USA
| | - Purushothama Rao Tata
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA.,Duke Cancer Institute, Duke University School of Medicine, Durham, NC, USA.,Regeneration Next, Duke University, Durham, NC, USA.,Center for Advanced Genomic Technologies, Duke University, Durham, NC, USA
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Kunze B, Middelhoff M, Maurer HC, Agibalova T, Anand A, Bührer AM, Fang HY, Baumeister T, Steiger K, Strangmann J, Schmid RM, Wang TC, Quante M. Notch signaling drives development of Barrett's metaplasia from Dclk1-positive epithelial tuft cells in the murine gastric mucosa. Sci Rep 2021; 11:4509. [PMID: 33627749 PMCID: PMC7904766 DOI: 10.1038/s41598-021-84011-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 02/08/2021] [Indexed: 12/13/2022] Open
Abstract
Barrett's esophagus (BE) is a precursor to esophageal adenocarcinoma (EAC), but its cellular origin and mechanism of neoplastic progression remain unresolved. Notch signaling, which plays a key role in regulating intestinal stem cell maintenance, has been implicated in a number of cancers. The kinase Dclk1 labels epithelial post-mitotic tuft cells at the squamo-columnar junction (SCJ), and has also been proposed to contribute to epithelial tumor growth. Here, we find that genetic activation of intracellular Notch signaling in epithelial Dclk1-positive tuft cells resulted in the accelerated development of metaplasia and dysplasia in a mouse model of BE (pL2.Dclk1.N2IC mice). In contrast, genetic ablation of Notch receptor 2 in Dclk1-positive cells delayed BE progression (pL2.Dclk1.N2fl mice), and led to increased secretory cell differentiation. The accelerated BE progression in pL2.Dclk1.N2IC mice correlated with changes to the transcriptomic landscape, most notably for the activation of oncogenic, proliferative pathways in BE tissues, in contrast to upregulated Wnt signalling in pL2.Dclk1.N2fl mice. Collectively, our data show that Notch activation in Dclk1-positive tuft cells in the gastric cardia can contribute to BE development.
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Affiliation(s)
- Bettina Kunze
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Moritz Middelhoff
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany.
| | - H Carlo Maurer
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Tatiana Agibalova
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Akanksha Anand
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Anne-Marie Bührer
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Hsin-Yu Fang
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Theresa Baumeister
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Katja Steiger
- Institute of Pathology, Technical University of Munich, Munich, Germany
| | - Julia Strangmann
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Roland M Schmid
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany
| | - Timothy C Wang
- Department of Medicine, Columbia University Medical Center, New York, NY, USA
| | - Michael Quante
- Klinik und Poliklinik für Innere Medizin II, Technical University of Munich, Munich, Germany. .,Klinik für Innere Medizin II, Gastrointestinale Onkologie, Universitätsklinikum Freiburg, Freiburg, Germany.
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30
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Sankoda N, Tanabe W, Tanaka A, Shibata H, Woltjen K, Chiba T, Haga H, Sakai Y, Mandai M, Yamamoto T, Yamada Y, Uemoto S, Kawaguchi Y. Epithelial expression of Gata4 and Sox2 regulates specification of the squamous-columnar junction via MAPK/ERK signaling in mice. Nat Commun 2021; 12:560. [PMID: 33495473 PMCID: PMC7835245 DOI: 10.1038/s41467-021-20906-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 12/24/2020] [Indexed: 12/12/2022] Open
Abstract
The squamous-columnar junction (SCJ) is a boundary consisting of precisely positioned transitional epithelium between the squamous and columnar epithelium. Transitional epithelium is a hotspot for precancerous lesions, and is therefore clinically important; however, the origins and physiological properties of transitional epithelium have not been fully elucidated. Here, by using mouse genetics, lineage tracing, and organoid culture, we examine the development of the SCJ in the mouse stomach, and thus define the unique features of transitional epithelium. We find that two transcription factors, encoded by Sox2 and Gata4, specify primitive transitional epithelium into squamous and columnar epithelium. The proximal-distal segregation of Sox2 and Gata4 expression establishes the boundary of the unspecified transitional epithelium between committed squamous and columnar epithelium. Mechanistically, Gata4-mediated expression of the morphogen Fgf10 in the distal stomach and Sox2-mediated Fgfr2 expression in the proximal stomach induce the intermediate regional activation of MAPK/ERK, which prevents the differentiation of transitional epithelial cells within the SCJ boundary. Our results have implications for tissue regeneration and tumorigenesis, which are related to the SCJ.
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Affiliation(s)
- Nao Sankoda
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, 606-8507, Japan
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo, 108-8639, Japan
| | - Wataru Tanabe
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- Department of Gastroenterology, Kyoto University Graduate School of Medicine, Kyoto, 606-8507, Japan
| | - Akito Tanaka
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Hirofumi Shibata
- Department of Otolaryngology, Gifu University Graduate School of Medicine, Gifu, 501-1194, Japan
| | - Knut Woltjen
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- Hakubi Center for Advanced Research, Kyoto University, Kyoto, 606-8501, Japan
| | - Tsutomu Chiba
- Department of Gastroenterology, Kyoto University Graduate School of Medicine, Kyoto, 606-8507, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, 606-8507, Japan
| | - Yoshiharu Sakai
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, 606-8507, Japan
| | - Masaki Mandai
- Department of Gynecology and Obstetrics, Kyoto University Hospital, Kyoto, 606-8507, Japan
| | - Takuya Yamamoto
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- AMED-CREST, AMED 1-7-1 Otemachi, Chiyodaku, Tokyo, 100-0004, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
- Medical-risk Avoidance Based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto, 606-8507, Japan
| | - Yasuhiro Yamada
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo, 108-8639, Japan
- AMED-CREST, AMED 1-7-1 Otemachi, Chiyodaku, Tokyo, 100-0004, Japan
| | - Shinji Uemoto
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, 606-8507, Japan
| | - Yoshiya Kawaguchi
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan.
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31
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Miao ZF, Sun JX, Adkins-Threats M, Pang MJ, Zhao JH, Wang X, Tang KW, Wang ZN, Mills JC. DDIT4 Licenses Only Healthy Cells to Proliferate During Injury-induced Metaplasia. Gastroenterology 2021; 160:260-271.e10. [PMID: 32956680 PMCID: PMC7857017 DOI: 10.1053/j.gastro.2020.09.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/10/2020] [Accepted: 09/12/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS In stomach, metaplasia can arise from differentiated chief cells that become mitotic via paligenosis, a stepwise program. In paligenosis, mitosis initiation requires reactivation of the cellular energy hub mTORC1 after initial mTORC1 suppression by DNA damage induced transcript 4 (DDIT4 aka REDD1). Here, we use DDIT4-deficient mice and human cells to study how metaplasia increases tumorigenesis risk. METHODS A tissue microarray of human gastric tissue specimens was analyzed by immunohistochemistry for DDIT4. C57BL/6 mice were administered combinations of intraperitoneal injections of high-dose tamoxifen (TAM) to induce spasmolytic polypeptide-expressing metaplasia (SPEM) and rapamycin to block mTORC1 activity, and N-methyl-N-nitrosourea (MNU) in drinking water to induce spontaneous gastric tumors. Stomachs were analyzed for proliferation, DNA damage, and tumor formation. CRISPR/Cas9-generated DDIT4-/- and control human gastric cells were analyzed for growth in vitro and in xenografts with and without 5-fluorouracil (5-FU) treatment. RESULTS DDIT4 was expressed in normal gastric chief cells in mice and humans and decreased as chief cells became metaplastic. Paligenotic Ddit4-/- chief cells maintained constitutively high mTORC1, causing increased mitosis of metaplastic cells despite DNA damage. Lower DDIT4 expression correlated with longer survival of patients with gastric cancer. 5-FU-treated DDIT4-/- human gastric epithelial cells had significantly increased cells entering mitosis despite DNA damage and increased proliferation in vitro and in xenografts. MNU-treated Ddit4-/- mice had increased spontaneous tumorigenesis after multiple rounds of paligenosis induced by TAM. CONCLUSIONS During injury-induced metaplastic proliferation, failure of licensing mTORC1 reactivation correlates with increased proliferation of cells harboring DNA damage, as well as increased tumor formation and growth in mice and humans.
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Affiliation(s)
- Zhi-Feng Miao
- Division of Gastroenterology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri; Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Jing-Xu Sun
- Division of Gastroenterology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri; Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Mahliyah Adkins-Threats
- Division of Gastroenterology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Min-Jiao Pang
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Jun-Hua Zhao
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xin Wang
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Kai-Wen Tang
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Zhen-Ning Wang
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China.
| | - Jason C Mills
- Division of Gastroenterology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri; Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri; Department of Developmental Biology, Washington University School of Medicine, St Louis, Missouri.
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32
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De Salvo C, Pastorelli L, Petersen CP, Buttò LF, Buela KA, Omenetti S, Locovei SA, Ray S, Friedman HR, Duijser J, Xin W, Osme A, Cominelli F, Mahabeleshwar GH, Mills JC, Goldenring JR, Pizarro TT. Interleukin 33 Triggers Early Eosinophil-Dependent Events Leading to Metaplasia in a Chronic Model of Gastritis-Prone Mice. Gastroenterology 2021; 160:302-316.e7. [PMID: 33010253 PMCID: PMC7755675 DOI: 10.1053/j.gastro.2020.09.040] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 09/22/2020] [Accepted: 09/22/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Interleukin (IL)33/IL1F11 is an important mediator for the development of type 2 T-helper cell (Th2)-driven inflammatory disorders and has also been implicated in the pathogenesis of gastrointestinal (GI)-related cancers, including gastric carcinoma. We therefore sought to mechanistically determine IL33's potential role as a critical factor linking chronic inflammation and gastric carcinogenesis using gastritis-prone SAMP1/YitFc (SAMP) mice. METHODS SAMP and (parental control) AKR mice were assessed for baseline gastritis and progression to metaplasia. Expression/localization of IL33 and its receptor, ST2/IL1R4, were characterized in corpus tissues, and activation and neutralization studies were both performed targeting the IL33/ST2 axis. Dissection of immune pathways leading to metaplasia was evaluated, including eosinophil depletion studies using anti-IL5/anti-CCR3 treatment. RESULTS Progressive gastritis and, ultimately, intestinalized spasmolytic polypeptide-expressing metaplasia (SPEM) was detected in SAMP stomachs, which was absent in AKR but could be moderately induced with exogenous, recombinant IL33. Robust peripheral (bone marrow) expansion of eosinophils and local recruitment of both eosinophils and IL33-expressing M2 macrophages into corpus tissues were evident in SAMP. Interestingly, IL33 blockade did not affect bone marrow-derived expansion and local infiltration of eosinophils, but markedly decreased M2 macrophages and SPEM features, while eosinophil depletion caused a significant reduction in both local IL33-producing M2 macrophages and SPEM in SAMP. CONCLUSIONS IL33 promotes metaplasia and the sequelae of eosinophil-dependent downstream infiltration of IL33-producing M2 macrophages leading to intestinalized SPEM in SAMP, suggesting that IL33 represents a critical link between chronic gastritis and intestinalizing metaplasia that may serve as a potential therapeutic target for preneoplastic conditions of the GI tract.
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Affiliation(s)
| | - Luca Pastorelli
- Department of Pathology; Department of IRCCS Policlinico San Donato, Gastroenterology & Gastrointestinal Endoscopy Unit, San Donato Milanese, 20097 and Department of Biomedical Sciences, University of Milan, Milan, 20122, Italy
| | - Christine P. Petersen
- Department of Department of Surgery and the Epithelial Biology Center, Vanderbilt University, Nashville, TN, 37235, USA
| | - Ludovica F. Buttò
- Department of Medicine/Division of Gastroenterology & Liver Disease, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | | | | | - Silviu A. Locovei
- Department of Pathology; Department of Medicine/Division of Gastroenterology & Liver Disease, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | | | | | | | | | | | - Fabio Cominelli
- Department of Medicine/Division of Gastroenterology & Liver Disease, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | | | - Jason C. Mills
- Department of Medicine, Gastroenterology Division, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - James R. Goldenring
- Department of Department of Surgery and the Epithelial Biology Center, Vanderbilt University, Nashville, TN, 37235, USA
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Recent Advances in Understandings Towards Pathogenesis and Treatment for Intrauterine Adhesion and Disruptive Insights from Single-Cell Analysis. Reprod Sci 2020; 28:1812-1826. [PMID: 33125685 PMCID: PMC8189970 DOI: 10.1007/s43032-020-00343-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/01/2020] [Indexed: 12/22/2022]
Abstract
Intrauterine adhesion is a major cause of menstrual irregularities, infertility, and recurrent pregnancy losses and the progress towards its amelioration and therapy is slow and unsatisfactory. We aim to summarize and evaluate the current treatment progress and research methods for intrauterine adhesion. We conducted literature review in January 2020 by searching articles at PubMed on prevention and treatment, pathogenesis, the repair of other tissues/organs, cell plasticity, and the stem cell–related therapies for intrauterine adhesion. A total of 110 articles were selected for review. Uterine cell heterogeneity, expression profile, and cell-cell interaction were investigated based on scRNA-seq of uterus provided by Human Cell Landscape (HCL) project. Previous knowledge on intrauterine adhesion (IUA) pathogenesis was mostly derived from correlation studies by differentially expressed genes between endometrial tissue of intrauterine adhesion patients/animal models and normal endometrial tissue. Although the TGF-β1/SMAD pathway was suggested as the key driver for IUA pathogenesis, uterine cell heterogeneity and distinct expression profile among different cell types highlighted the importance of single-cell investigations. Cell-cell interaction in the uterus revealed the central hub of endothelial cells interacting with other cells, with endothelial cells in endothelial to mesenchymal transition and fibroblasts as the strongest interaction partners. The potential of stem cell–related therapies appeared promising, yet suffers from largely animal studies and nonstandard study design. The need to dissect the roles of endometrial cells, endothelial cells, and fibroblasts and their interaction is evident in order to elucidate the molecular and cellular mechanisms in both intrauterine adhesion pathogenesis and treatment.
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Sei Y, Feng J, Zhao X, Wank SA. Role of an active reserve stem cell subset of enteroendocrine cells in intestinal stem cell dynamics and the genesis of small intestinal neuroendocrine tumors. Am J Physiol Gastrointest Liver Physiol 2020; 319:G494-G501. [PMID: 32845170 PMCID: PMC7654644 DOI: 10.1152/ajpgi.00278.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Small intestinal neuroendocrine tumors (SI-NET) are serotonin-secreting well-differentiated neuroendocrine tumors of putative enterochromaffin (EC) cell origin. Recent studies recognize a subset of EC cells that is label-retaining at the +4 position in the crypt and functions as a reserve intestinal stem cell. Importantly, this +4 reserve EC cell subset not only contributes to regeneration of the intestinal epithelium during injury and inflammation but also to basal crypt homeostasis at a constant rate. The latter function suggests that the +4 EC cell subset serves as an active reserve stem cell via a constant rate of dedifferentiation. Characterization of early tumor formation of SI-NET, observed as crypt-based EC cell clusters in many cases of familial SI-NETs, suggests that the +4 active reserve EC cell subset is the cell of origin. This newly discovered active reserve stem cell property of EC cells can account for unique biological mechanisms and processes associated with the genesis and development of SI-NETs. The recognition of this property of the +4 active reserve EC cell subset may provide novel opportunities to explore NETs in the gastrointestinal tract and other organs.
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Affiliation(s)
- Yoshitatsu Sei
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jianying Feng
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Xilin Zhao
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Stephen A. Wank
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
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Miao ZF, Lewis MA, Cho CJ, Adkins-Threats M, Park D, Brown JW, Sun JX, Burclaff JR, Kennedy S, Lu J, Mahar M, Vietor I, Huber LA, Davidson NO, Cavalli V, Rubin DC, Wang ZN, Mills JC. A Dedicated Evolutionarily Conserved Molecular Network Licenses Differentiated Cells to Return to the Cell Cycle. Dev Cell 2020; 55:178-194.e7. [PMID: 32768422 DOI: 10.1016/j.devcel.2020.07.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/04/2020] [Accepted: 07/11/2020] [Indexed: 02/06/2023]
Abstract
Differentiated cells can re-enter the cell cycle to repair tissue damage via a series of discrete morphological and molecular stages coordinated by the cellular energetics regulator mTORC1. We previously proposed the term "paligenosis" to describe this conserved cellular regeneration program. Here, we detail a molecular network regulating mTORC1 during paligenosis in both mouse pancreatic acinar and gastric chief cells. DDIT4 initially suppresses mTORC1 to induce autodegradation of differentiated cell components and damaged organelles. Later in paligenosis, IFRD1 suppresses p53 accumulation. Ifrd1-/- cells do not complete paligenosis because persistent p53 prevents mTORC1 reactivation and cell proliferation. Ddit4-/- cells never suppress mTORC1 and bypass the IFRD1 checkpoint on proliferation. Previous reports and our current data implicate DDIT4/IFRD1 in governing paligenosis in multiple organs and species. Thus, we propose that an evolutionarily conserved, dedicated molecular network has evolved to allow differentiated cells to re-enter the cell cycle (i.e., undergo paligenosis) after tissue injury. VIDEO ABSTRACT.
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Affiliation(s)
- Zhi-Feng Miao
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, First Hospital of China Medical University, Shenyang 110001, China
| | - Mark A Lewis
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Charles J Cho
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Mahliyah Adkins-Threats
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dongkook Park
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jeffrey W Brown
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jing-Xu Sun
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, First Hospital of China Medical University, Shenyang 110001, China
| | - Joseph R Burclaff
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Susan Kennedy
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jianyun Lu
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Marcus Mahar
- Department of Neuroscience, Washington University School of Medicine, St. Louis, MO, USA
| | - Ilja Vietor
- Division of Cell Biology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Lukas A Huber
- Division of Cell Biology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Nicholas O Davidson
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Valeria Cavalli
- Department of Neuroscience, Washington University School of Medicine, St. Louis, MO, USA
| | - Deborah C Rubin
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Zhen-Ning Wang
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, First Hospital of China Medical University, Shenyang 110001, China.
| | - Jason C Mills
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA.
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Bockerstett KA, Lewis SA, Wolf KJ, Noto CN, Jackson NM, Ford EL, Ahn TH, DiPaolo RJ. Single-cell transcriptional analyses of spasmolytic polypeptide-expressing metaplasia arising from acute drug injury and chronic inflammation in the stomach. Gut 2020; 69:1027-1038. [PMID: 31481545 PMCID: PMC7282188 DOI: 10.1136/gutjnl-2019-318930] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 08/21/2019] [Accepted: 08/25/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Spasmolytic polypeptide-expressing metaplasia (SPEM) is a regenerative lesion in the gastric mucosa and is a potential precursor to intestinal metaplasia/gastric adenocarcinoma in a chronic inflammatory setting. The goal of these studies was to define the transcriptional changes associated with SPEM at the individual cell level in response to acute drug injury and chronic inflammatory damage in the gastric mucosa. DESIGN Epithelial cells were isolated from the gastric corpus of healthy stomachs and stomachs with drug-induced and inflammation-induced SPEM lesions. Single cell RNA sequencing (scRNA-seq) was performed on tissue samples from each of these settings. The transcriptomes of individual epithelial cells from healthy, acutely damaged and chronically inflamed stomachs were analysed and compared. RESULTS scRNA-seq revealed a population Mucin 6 (Muc6)+gastric intrinsic factor (Gif)+ cells in healthy tissue, but these cells did not express transcripts associated with SPEM. Furthermore, analyses of SPEM cells from drug injured and chronically inflamed corpus yielded two major findings: (1) SPEM and neck cell hyperplasia/hypertrophy are nearly identical in the expression of SPEM-associated transcripts and (2) SPEM programmes induced by drug-mediated parietal cell ablation and chronic inflammation are nearly identical, although the induction of transcripts involved in immunomodulation was unique to SPEM cells in the chronic inflammatory setting. CONCLUSIONS These data necessitate an expansion of the definition of SPEM to include Tff2+Muc6+ cells that do not express mature chief cell transcripts such as Gif. Our data demonstrate that SPEM arises by a highly conserved cellular programme independent of aetiology and develops immunoregulatory capabilities in a setting of chronic inflammation.
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Affiliation(s)
- Kevin A Bockerstett
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Scott A Lewis
- Department of Computer Science, Saint Louis University, Saint Louis, Missouri, USA
| | - Kyle J Wolf
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Christine N Noto
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Nicholas M Jackson
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Eric L Ford
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Tae-Hyuk Ahn
- Department of Computer Science, Saint Louis University, Saint Louis, Missouri, USA
| | - Richard J DiPaolo
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
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Li W, Zimmerman SE, Peregrina K, Houston M, Mayoral J, Zhang J, Maqbool S, Zhang Z, Cai Y, Ye K, Augenlicht LH. The nutritional environment determines which and how intestinal stem cells contribute to homeostasis and tumorigenesis. Carcinogenesis 2020; 40:937-946. [PMID: 31169292 DOI: 10.1093/carcin/bgz106] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 05/28/2019] [Accepted: 06/04/2019] [Indexed: 02/07/2023] Open
Abstract
Sporadic colon cancer accounts for approximately 80% of colorectal cancer (CRC) with high incidence in Western societies strongly linked to long-term dietary patterns. A unique mouse model for sporadic CRC results from feeding a purified rodent Western-style diet (NWD1) recapitulating intake for the mouse of common nutrient risk factors each at its level consumed in higher risk Western populations. This causes sporadic large and small intestinal tumors in wild-type mice at an incidence and frequency similar to that in humans. NWD1 perturbs intestinal cell maturation and Wnt signaling throughout villi and colonic crypts and decreases mouse Lgr5hi intestinal stem cell contribution to homeostasis and tumor development. Here we establish that NWD1 transcriptionally reprograms Lgr5hi cells, and that nutrients are interactive in reprogramming. Furthermore, the DNA mismatch repair pathway is elevated in Lgr5hi cells by lower vitamin D3 and/or calcium in NWD1, paralleled by reduced accumulation of relevant somatic mutations detected by single-cell exome sequencing. In compensation, NWD1 also reprograms Bmi1+ cells to function and persist as stem-like cells in mucosal homeostasis and tumor development. The data establish the key role of the nutrient environment in defining the contribution of two different stem cell populations to both mucosal homeostasis and tumorigenesis. This raises important questions regarding impact of variable human diets on which and how stem cell populations function in the human mucosa and give rise to tumors. Moreover, major differences reported in turnover of human and mouse crypt base stem cells may be linked to their very different nutrient exposures.
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Affiliation(s)
- Wenge Li
- Department of Medicine, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Samuel E Zimmerman
- Systems and Computational Biology, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Karina Peregrina
- Department of Medicine, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Michele Houston
- Department of Medicine, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Joshua Mayoral
- Pathology, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Jinghang Zhang
- Microbiology and Immunology, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Shahina Maqbool
- Genetics, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Zhengdong Zhang
- Genetics, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Ying Cai
- Genetics, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Kenny Ye
- Epidemiology and Population Health, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
| | - Leonard H Augenlicht
- Department of Medicine, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA.,Cell Biology, Albert Einstein College of Medicine, Ullmann, Bronx, NY, USA
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Bockerstett KA, Petersen CP, Noto CN, Kuehm LM, Wong CF, Ford EL, Teague RM, Mills JC, Goldenring JR, DiPaolo RJ. Interleukin 27 Protects From Gastric Atrophy and Metaplasia During Chronic Autoimmune Gastritis. Cell Mol Gastroenterol Hepatol 2020; 10:561-579. [PMID: 32376420 PMCID: PMC7399182 DOI: 10.1016/j.jcmgh.2020.04.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS The association between chronic inflammation and gastric carcinogenesis is well established, but it is not clear how immune cells and cytokines regulate this process. We investigated the role of interleukin 27 (IL27) in the development of gastric atrophy, hyperplasia, and metaplasia (preneoplastic lesions associated with inflammation-induced gastric cancer) in mice with autoimmune gastritis. METHODS We performed studies with TxA23 mice (control mice), which express a T-cell receptor against the H+/K+ adenosine triphosphatase α chain and develop autoimmune gastritis, and TxA23xEbi3-/- mice, which develop gastritis but do not express IL27. In some experiments, mice were given high-dose tamoxifen to induce parietal cell atrophy and spasmolytic polypeptide-expressing metaplasia (SPEM). Recombinant IL27 was administered to mice with mini osmotic pumps. Stomachs were collected and analyzed by histopathology and immunofluorescence; we used flow cytometry to measure IL27 and identify immune cells that secrete IL27 in the gastric mucosa. Single-cell RNA sequencing was performed on immune cells that infiltrated stomach tissues. RESULTS We identified IL27-secreting macrophages and dendritic cell in the corpus of mice with chronic gastritis (TxA23 mice). Mice deficient in IL27 developed more severe gastritis, atrophy, and SPEM than control mice. Administration of recombinant IL27 significantly reduced the severity of inflammation, atrophy, and SPEM in mice with gastritis. Single-cell RNA sequencing showed that IL27 acted almost exclusively on stomach-infiltrating CD4+ T cells to suppress expression of inflammatory genes. CONCLUSIONS In studies of mice with autoimmune gastritis, we found that IL27 is an inhibitor of gastritis and SPEM, suppressing CD4+ T-cell-mediated inflammation in the gastric mucosa.
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Affiliation(s)
- Kevin A Bockerstett
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri
| | - Christine P Petersen
- Nashville Veterans Affairs Medical Center, Department of Surgery, Department of Cell and Developmental Biology, Epithelial Biology Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Christine N Noto
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri
| | - Lindsey M Kuehm
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri
| | - Chun Fung Wong
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri
| | - Eric L Ford
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri
| | - Ryan M Teague
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri
| | - Jason C Mills
- Division of Gastroenterology, Department of Medicine, Pathology and Immunology, Department of Developmental Biology, Washington University School of Medicine, Saint Louis, Missouri
| | - James R Goldenring
- Nashville Veterans Affairs Medical Center, Department of Surgery, Department of Cell and Developmental Biology, Epithelial Biology Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Richard J DiPaolo
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri.
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Paracrine orchestration of intestinal tumorigenesis by a mesenchymal niche. Nature 2020; 580:524-529. [PMID: 32322056 PMCID: PMC7490650 DOI: 10.1038/s41586-020-2166-3] [Citation(s) in RCA: 183] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/03/2020] [Indexed: 11/08/2022]
Abstract
The initiation of an intestinal tumour is a probabilistic process that depends on the competition between mutant and normal epithelial stem cells in crypts1. Intestinal stem cells are closely associated with a diverse but poorly characterized network of mesenchymal cell types2,3. However, whether the physiological mesenchymal microenvironment of mutant stem cells affects tumour initiation remains unknown. Here we provide in vivo evidence that the mesenchymal niche controls tumour initiation in trans. By characterizing the heterogeneity of the intestinal mesenchyme using single-cell RNA-sequencing analysis, we identified a population of rare pericryptal Ptgs2-expressing fibroblasts that constitutively process arachidonic acid into highly labile prostaglandin E2 (PGE2). Specific ablation of Ptgs2 in fibroblasts was sufficient to prevent tumour initiation in two different models of sporadic, autochthonous tumorigenesis. Mechanistically, single-cell RNA-sequencing analyses of a mesenchymal niche model showed that fibroblast-derived PGE2 drives the expansion οf a population of Sca-1+ reserve-like stem cells. These express a strong regenerative/tumorigenic program, driven by the Hippo pathway effector Yap. In vivo, Yap is indispensable for Sca-1+ cell expansion and early tumour initiation and displays a nuclear localization in both mouse and human adenomas. Using organoid experiments, we identified a molecular mechanism whereby PGE2 promotes Yap dephosphorylation, nuclear translocation and transcriptional activity by signalling through the receptor Ptger4. Epithelial-specific ablation of Ptger4 misdirected the regenerative reprogramming of stem cells and prevented Sca-1+ cell expansion and sporadic tumour initiation in mutant mice, thereby demonstrating the robust paracrine control of tumour-initiating stem cells by PGE2-Ptger4. Analyses of patient-derived organoids established that PGE2-PTGER4 also regulates stem-cell function in humans. Our study demonstrates that initiation of colorectal cancer is orchestrated by the mesenchymal niche and reveals a mechanism by which rare pericryptal Ptgs2-expressing fibroblasts exert paracrine control over tumour-initiating stem cells via the druggable PGE2-Ptger4-Yap signalling axis.
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Li W, Peregrina K, Houston M, Augenlicht LH. Vitamin D and the nutritional environment in functions of intestinal stem cells: Implications for tumorigenesis and prevention. J Steroid Biochem Mol Biol 2020; 198:105556. [PMID: 31783155 PMCID: PMC7093817 DOI: 10.1016/j.jsbmb.2019.105556] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/06/2019] [Accepted: 11/26/2019] [Indexed: 02/06/2023]
Abstract
Sporadic colon cancer accounts for ∼80% of CRC, with high incidence in western societies strongly linked to dietary patterns. The only mouse model for sporadic CRC results from feeding mice a purified rodent western-style diet (NWD1), establishing mouse intake of several common nutrients that mimic for each its level consumed in western populations at higher risk for colon cancer (higher fat, lower vitamin D3, calcium, methyl donors and fiber). This causes sporadic colon and small intestinal tumors at an incidence and frequency similar to that of humans. NWD1 perturbs intestinal cell maturation and Wnt signaling throughout villi and colonic crypts before tumors are detected. Surprisingly, feeding NWD1 decreases mouse Lgr5hi intestinal stem cell contribution to homeostasis and tumorigenesis, associated with extensive Lgr5hi cell transcriptional reprogramming, with nutrient levels interactive in these effects. There is a key impact of the lower vitamin D3 in NWD1 and its signaling through the Vdr. The DNA mismatch repair pathway is elevated in Lgr5hi cells by lower vitamin D3 and/or calcium in NWD1, reducing accumulation of relevant somatic mutations detected by single cell exome sequencing. There are also alterations in metabolic pathways, including down-regulation of oxidative phosphorylation. In compensation for compromise of Lgr5hi cells, NWD1 also reprograms cells derived from the Bmi1+ population, defined as those cells marked in Bmi1creERT2, Rosa26tom mice following tamoxifen injection, and at least a portion of these cells then function and persist as stem-like cells in mucosal homeostasis and tumorigenesis. The data establish a key role of the nutrient environment, and vitamin D signaling, in defining contribution of at least two different stem cell populations to mucosal homeostasis and tumorigenesis. This raises significant questions regarding impact of variable human diets on which and how multiple potential intestinal stem cell populations function in the human and give rise to tumors. Moreover, genetic and epigenetic changes in long-lived stem cells have important implications for understanding the effects of vitamin D and other nutrients on intestinal homeostasis and on intervention strategies for altering probability of tumor development.
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Affiliation(s)
- Wenge Li
- Department of Medicine, Albert Einstein College of Medicine 1300 Morris Park Ave, Bronx, NY 10461, United States
| | - Karina Peregrina
- Department of Medicine, Albert Einstein College of Medicine 1300 Morris Park Ave, Bronx, NY 10461, United States
| | - Michele Houston
- Department of Medicine, Albert Einstein College of Medicine 1300 Morris Park Ave, Bronx, NY 10461, United States
| | - Leonard H Augenlicht
- Department of Medicine, Albert Einstein College of Medicine 1300 Morris Park Ave, Bronx, NY 10461, United States; Department of Cell Biology, Albert Einstein College of Medicine 1300 Morris Park Ave, Bronx, NY 10461, United States.
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McBride WH, Schaue D. Radiation-induced tissue damage and response. J Pathol 2020; 250:647-655. [PMID: 31990369 PMCID: PMC7216989 DOI: 10.1002/path.5389] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/23/2019] [Accepted: 01/20/2020] [Indexed: 12/28/2022]
Abstract
Normal tissue responses to ionizing radiation have been a major subject for study since the discovery of X-rays at the end of the 19th century. Shortly thereafter, time-dose relationships were established for some normal tissue endpoints that led to investigations into how the size of dose per fraction and the quality of radiation affected outcome. The assessment of the radiosensitivity of bone marrow stem cells using colony-forming assays by Till and McCulloch prompted the establishment of in situ clonogenic assays for other tissues that added to the radiobiology toolbox. These clonogenic and functional endpoints enabled mathematical modeling to be performed that elucidated how tissue structure, and in particular turnover time, impacted clinically relevant fractionated radiation schedules. More recently, lineage tracing technology, advanced imaging and single cell sequencing have shed further light on the behavior of cells within stem, and other, cellular compartments, both in homeostasis and after radiation damage. The discovery of heterogeneity within the stem cell compartment and plasticity in response to injury have added new dimensions to the consideration of radiation-induced tissue damage. Clinically, radiobiology of the 20th century garnered wisdom relevant to photon treatments delivered to a fairly wide field at around 2 Gy per fraction, 5 days per week, for 5-7 weeks. Recently, the scope of radiobiology has been extended by advances in technology, imaging and computing, as well as by the use of charged particles. These allow radiation to be delivered more precisely to tumors while minimizing the amount of normal tissue receiving high doses. One result has been an increase in the use of schedules with higher doses per fraction given in a shorter time frame (hypofractionation). We are unable to cover these new technologies in detail in this review, just as we must omit low-dose stochastic effects, and many aspects of dose, dose rate and radiation quality. We argue that structural diversity and plasticity within tissue compartments provides a general context for discussion of most radiation responses, while acknowledging many omissions. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- William H McBride
- Departent of Radiation OncologyUniversity of California, Los Angeles (UCLA)Los AngelesCAUSA
| | - Dörthe Schaue
- Departent of Radiation OncologyUniversity of California, Los Angeles (UCLA)Los AngelesCAUSA
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Physiological Significance of Ion Transporters and Channels in the Stomach and Pathophysiological Relevance in Gastric Cancer. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:2869138. [PMID: 32104192 PMCID: PMC7040404 DOI: 10.1155/2020/2869138] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/17/2019] [Accepted: 01/08/2020] [Indexed: 12/26/2022]
Abstract
Gastric cancer (GC) is a highly invasive and fatal malignant disease that accounts for 5.7% of new global cancer cases and is the third leading cause of cancer-related death. Acid/base homeostasis is critical for organisms because protein and enzyme function, cellular structure, and plasma membrane permeability change with pH. Various ion transporters are expressed in normal gastric mucosal epithelial cells and regulate gastric acid secretion, ion transport, and fluid absorption, thereby stabilizing the differentiation and homeostasis of gastric mucosal epithelial cells. Ion transporter dysfunction results in disordered ion transport, mucosa barrier dysfunction, and acid/base disturbances, causing gastric acid-related diseases such as chronic atrophic gastritis (CAG) and GC. This review summarizes the physiological functions of multiple ion transporters and channels in the stomach, including Cl− channels, Cl−/HCO3− exchangers, sodium/hydrogen exchangers (NHEs), and potassium (K+) channels, and their pathophysiological relevance in GC.
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Deficient Active Transport Activity in Healing Mucosa After Mild Gastric Epithelial Damage. Dig Dis Sci 2020; 65:119-131. [PMID: 31515722 PMCID: PMC7950857 DOI: 10.1007/s10620-019-05825-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 09/04/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Peptic ulcers recur, suggesting that ulcer healing may leave tissue predisposed to subsequent damage. In mice, we have identified that the regenerated epithelium found after ulcer healing will remain abnormal for months after healing. AIM To determine whether healed gastric mucosa has altered epithelial function, as measured by electrophysiologic parameters. METHOD Ulcers were induced in mouse gastric corpus by serosal local application of acetic acid. Thirty days or 8 months after ulcer induction, tissue was mounted in an Ussing chamber. Transepithelial electrophysiologic parameters (short-circuit current, Isc. resistance, R) were compared between the regenerated healed ulcer region and the non-ulcerated contralateral region, in response to luminal hyperosmolar NaCl challenge (0.5 M). RESULTS In unperturbed stomach, luminal application of hyperosmolar NaCl transiently dropped Isc followed by gradual recovery over 2 h. Compared to the starting baseline Isc, percent Isc recovery was reduced in 30-day healing mucosa, but not at 8 months. Prior to NaCl challenge, a lower baseline Isc was observed in trefoil factor 2 (TFF2) knockout (KO) versus wild type (WT), with no Isc recovery in either non-ulcerated or healing mucosa of KO. Inhibiting Na/H exchanger (NHE) transport in WT mucosa inhibited Isc recovery in response to luminal challenge. NHE2-KO baseline Isc was reduced versus NHE2-WT. In murine gastric organoids, NHE inhibition slowed recovery of intracellular pH and delayed the repair of photic induced damage. CONCLUSION Healing gastric mucosa has deficient electrophysiological recovery in response to hypertonic NaCl. TFF2 and NHE2 contribute to Isc regulation, and the recovery and healing of transepithelial function.
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Mishra R, Sehring I, Cederlund M, Mulaw M, Weidinger G. NF-κB Signaling Negatively Regulates Osteoblast Dedifferentiation during Zebrafish Bone Regeneration. Dev Cell 2020; 52:167-182.e7. [DOI: 10.1016/j.devcel.2019.11.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 09/27/2019] [Accepted: 11/21/2019] [Indexed: 01/08/2023]
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Immediate and Late Effects of Early Weaning on Rat Gastric Cell Differentiation. Int J Mol Sci 2019; 21:ijms21010196. [PMID: 31892140 PMCID: PMC6981852 DOI: 10.3390/ijms21010196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 12/20/2019] [Accepted: 12/23/2019] [Indexed: 12/14/2022] Open
Abstract
Background: Gastric glands grow and cells reach differentiation at weaning in rats. By considering that early weaning (EW) can affect the timing of development, we aimed to compare molecular and cellular markers of differentiation in pups and adults. Methods: Wistar rats were separated into suckling-control (S) and EW groups at 15 days. Stomachs were collected at 15, 18, and 60 days for RNA and protein extraction, and morphology. Results: After EW, the expression of genes involved in differentiation (Atp4b, Bhlha15 and Pgc) augmented (18 days), and Atp4b and Gif were high at 60 days. EW increased the number of zymogenic cells (ZC) in pups and adults and augmented mucous neck cells only at 18 days, whereas parietal and transition cells (TC) were unchanged. Conclusions: EW affected the gastric mucosa mostly in a transient manner as the changes in gene expression and distribution of differentiated cells that were detected in pups were not fully maintained in adults, except for the size of ZC population. We concluded that though most of EW effects were immediate, such nutritional change in the infancy might affect part of gastric digestive functions in a permanent manner, as some markers were kept unbalanced in the adulthood.
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Hung CS, Wang YC, Guo JW, Yang RN, Lee CL, Shen MH, Huang CC, Huang CJ, Yang JY, Liu CY. Expression pattern of placenta specific 8 and keratin 20 in different types of gastrointestinal cancer. Mol Med Rep 2019; 21:659-666. [PMID: 31974611 PMCID: PMC6947936 DOI: 10.3892/mmr.2019.10871] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 11/06/2019] [Indexed: 12/14/2022] Open
Abstract
The aim of the present study was to investigate the expression of keratin 20 (KRT20) and placenta specific 8 (PLAC8) in gastrointestinal (GI) cancer with various differentiation phenotypes. The present study retrospectively investigated archived formalin-fixed paraffin-embedded tissue samples from 12 patients at different stages of GI cancer [four with gastric cancer, four with pancreatic cancer and four with colorectal cancer (CRC)]. The stages were pre-determined, according to differentiation phenotypes, by a pathologist of the Department of Pathology at Sijhih Cathay General Hospital. KRT20 and PLAC8 expression levels were assessed using immunohistochemistry. The CRC cell lines SW620 and Caco-2 were used to assess interactions between KRT20 and PLAC8 via reverse transcription-quantitative PCR. PLAC8 and KRT20 expression was observed consistently only in the well-differentiated CRC tissue samples. Low KRT20 expression levels were observed in the PLAC8 knockdown SW620 cells. In addition, there was a positive association between PLAC8 and KRT20 expression in the differentiated Caco-2 cells. According to the results of the present study, the differentiation status of GI cancer influenced KRT20 expression, particularly in CRC, which may explain why patients with well-differentiated CRC display better clinical outcomes. Therefore, the prognostic significance of KRT20 and PLAC8 may be particularly crucial for patients with CRC displaying a well-differentiated phenotype.
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Affiliation(s)
- Chih-Sheng Hung
- Department of Internal Medicine, Division of Gastroenterology, Cathay General Hospital, Taipei 10630, Taiwan, R.O.C
| | - Yen-Chieh Wang
- Department of Surgery, Division of Urology, Cathay General Hospital, Taipei 10630, Taiwan, R.O.C
| | - Jiun-Wen Guo
- Department of Medical Research, Cathay General Hospital, Taipei 10630, Taiwan, R.O.C
| | - Ruey-Neng Yang
- Department of Internal Medicine, Sijhih Cathay General Hospital, New Taipei 22174, Taiwan, R.O.C
| | - Chia-Long Lee
- Department of Internal Medicine, Division of Gastroenterology, Cathay General Hospital, Taipei 10630, Taiwan, R.O.C
| | - Ming-Hung Shen
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei 24205, Taiwan, R.O.C
| | - Chi-Cheng Huang
- Department of Surgery, Taipei‑Veterans General Hospital, Taipei 11217, Taiwan, R.O.C
| | - Chi-Jung Huang
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei 24205, Taiwan, R.O.C
| | - Jhih-Yun Yang
- Department of Mathematics, Taipei Wego Private Senior High School, Taipei 11254, Taiwan, R.O.C
| | - Chih-Yi Liu
- Department of Pathology, Sijhih Cathay General Hospital, New Taipei 22174, Taiwan, R.O.C
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Mills JC, Stanger BZ, Sander M. Nomenclature for cellular plasticity: are the terms as plastic as the cells themselves? EMBO J 2019; 38:e103148. [PMID: 31475380 PMCID: PMC6769377 DOI: 10.15252/embj.2019103148] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
It is now recognized that cell identity is more fluid, and tissues more plastic, than previously thought. The plasticity of cells is relevant to diverse fields, most notably developmental and stem cell biology, regenerative medicine, and cancer biology. To date, a comprehensive and uniform nomenclature to define distinct cell states and their injury-induced interconversions has been elusive. The first Keystone Symposium devoted exclusively to cellular plasticity in regeneration and tumorigenesis was held on January 2019 in Keystone, Colorado, and featured a workshop on terminology in the cell plasticity field. Definitions for terms such as plasticity, de- and transdifferentiation, reversion, and paligenosis were discussed. Here, we summarize the content and tenor of the symposium and nomenclature-focused workshop with regard to terms in the field. We outline the challenges with current definitions and recommend best practices and approaches to developing an accurate and acceptable nomenclature in the future.
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Affiliation(s)
- Jason C Mills
- Division of GastroenterologyDepartment of MedicineDepartment of Developmental BiologyDepartment of Pathology and ImmunologyWashington University School of MedicineSt. LouisMOUSA
| | - Ben Z Stanger
- Department of MedicineDepartment of Cell and Developmental BiologyAbramson Family Cancer Research InstitutePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Maike Sander
- Department of PediatricsDepartment of Cellular & Molecular MedicinePediatric Diabetes Research CenterUniversity of California, San DiegoSan DiegoCAUSA
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Shimizu T, Sohn Y, Choi E, Petersen CP, Prasad N, Goldenring JR. Decrease in MiR-148a Expression During Initiation of Chief Cell Transdifferentiation. Cell Mol Gastroenterol Hepatol 2019; 9:61-78. [PMID: 31473306 PMCID: PMC6881610 DOI: 10.1016/j.jcmgh.2019.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 02/07/2023]
Abstract
Gastric chief cells differentiate from mucous neck cells and develop their mature state at the base of oxyntic glands with expression of secretory zymogen granules. After parietal cell loss, chief cells transdifferentiate into mucous cell metaplasia, designated spasmolytic polypeptide-expressing metaplasia (SPEM), which is considered a candidate precursor of gastric cancer. We examined the range of microRNA (miRNA) expression in chief cells and identified miRNAs involved in chief cell transdifferentiation into SPEM. Among them, miR-148a was strongly and specifically expressed in chief cells and significantly decreased during the process of chief cell transdifferentiation. Interestingly, suppression of miR-148a in a conditionally immortalized chief cell line induced up-regulation of CD44 variant 9 (CD44v9), one of the transcripts expressed at an early stage of SPEM development, and DNA methyltransferase 1 (Dnmt1), an established target of miR-148a. Immunostaining analyses showed that Dnmt1 was up-regulated in SPEM cells as well as in chief cells before the emergence of SPEM in mouse models of acute oxyntic atrophy using either DMP-777 or L635. In the cascade of events that leads to transdifferentiation, miR-148a was down-regulated after acute oxyntic atrophy either in xCT knockout mice or after sulfasalazine inhibition of xCT. These findings suggest that the alteration of miR-148a expression is an early event in the process of chief cell transdifferentiation into SPEM.
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Affiliation(s)
- Takahiro Shimizu
- Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoojin Sohn
- Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Eunyoung Choi
- Nashville VA Medical Center, Nashville, Tennessee; Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Christine P Petersen
- Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Nripesh Prasad
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama
| | - James R Goldenring
- Nashville VA Medical Center, Nashville, Tennessee; Department of Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
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Que J, Garman KS, Souza RF, Spechler SJ. Pathogenesis and Cells of Origin of Barrett's Esophagus. Gastroenterology 2019; 157:349-364.e1. [PMID: 31082367 PMCID: PMC6650338 DOI: 10.1053/j.gastro.2019.03.072] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 03/22/2019] [Accepted: 03/25/2019] [Indexed: 02/06/2023]
Abstract
In patients with Barrett's esophagus (BE), metaplastic columnar mucosa containing epithelial cells with gastric and intestinal features replaces esophageal squamous mucosa damaged by gastroesophageal reflux disease. This condition is estimated to affect 5.6% of adults in the United States, and is a major risk factor for esophageal adenocarcinoma. Despite the prevalence and importance of BE, its pathogenesis is incompletely understood and there are disagreements over the cells of origin. We review mechanisms of BE pathogenesis, including transdifferentiation and transcommitment, and discuss potential cells of origin, including basal cells of the squamous epithelium, cells of esophageal submucosal glands and their ducts, cells of the proximal stomach, and specialized populations of cells at the esophagogastric junction (residual embryonic cells and transitional basal cells). We discuss the concept of metaplasia as a wound-healing response, and how cardiac mucosa might be the precursor of the intestinal metaplasia of BE. Finally, we discuss shortcomings in current diagnostic criteria for BE that have important clinical implications.
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Affiliation(s)
- Jianwen Que
- Division of Digestive and Liver Diseases and Center for Human Development, Department of Medicine, Columbia University, New York, New York.
| | - Katherine S. Garman
- Division of Gastroenterology, Department of Medicine, Duke University School of Medicine. Durham, NC
| | - Rhonda F. Souza
- Center for Esophageal Diseases, Department of Medicine, Baylor University Medical Center at Dallas, and Center for Esophageal Research, Department of Medicine, Baylor Scott & White Research Institute, Dallas, TX
| | - Stuart Jon Spechler
- Center for Esophageal Diseases, Department of Medicine, Baylor University Medical Center at Dallas, Dallas, Texas; Center for Esophageal Research, Department of Medicine, Baylor Scott & White Research Institute, Dallas, Texas.
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Roudebush C, Catala-Valentin A, Andl T, Le Bras GF, Andl CD. Activin A-mediated epithelial de-differentiation contributes to injury repair in an in vitro gastrointestinal reflux model. Cytokine 2019; 123:154782. [PMID: 31369967 DOI: 10.1016/j.cyto.2019.154782] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/08/2019] [Accepted: 07/10/2019] [Indexed: 02/08/2023]
Abstract
Reflux esophagitis is a result of esophageal exposure to acid and bile during episodes of gastroesophageal reflux. Aside from chemical injury to the esophageal epithelium, it has been shown that acid and bile induce cytokine-mediated injury by stimulating the release of pro-inflammatory cytokines. During the repair and healing process following reflux injury, the squamous esophageal cells are replaced with a columnar epithelium causing Barrett's metaplasia, which predisposes patients to esophageal adenocarcinoma. We identified a novel player in gastroesophageal reflux injury, the TGFβ family member Activin A (ActA), which is a known regulator of inflammation and tissue repair. In this study, we show that in response to bile salt and acidified media (pH 4) exposure, emulating the milieu to which the distal esophagus is exposed during gastroesophageal reflux, long-term treated, tolerant esophageal keratinocytes exhibit increased ActA secretion and a pro-inflammatory cytokine signature. Furthermore, we noted increased motility and expression of the stem cell markers SOX9, LGR5 and DCLK1 supporting the notion that repair mechanisms were activated in the bile salt/acid-tolerant keratinocytes. Additionally, these experiments demonstrated that de-differentiation as characterized by the induction of YAP1, FOXO3 and KRT17 was altered by ActA/TGFβ signaling. Collectively, our results suggest a pivotal role for ActA in the inflammatory GERD environment by modulating esophageal tissue repair and de-differentiation.
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Affiliation(s)
- Cedric Roudebush
- Burnett School of Biomedical Sciences, University of Central Florida, 4110 Libra Dr., BMS, Building 20, rm 223, Orlando, FL 32816, United States
| | - Alma Catala-Valentin
- Burnett School of Biomedical Sciences, University of Central Florida, 4110 Libra Dr., BMS, Building 20, rm 223, Orlando, FL 32816, United States
| | - Thomas Andl
- Burnett School of Biomedical Sciences, University of Central Florida, 4110 Libra Dr., BMS, Building 20, rm 223, Orlando, FL 32816, United States
| | - Gregoire F Le Bras
- Burnett School of Biomedical Sciences, University of Central Florida, 4110 Libra Dr., BMS, Building 20, rm 223, Orlando, FL 32816, United States
| | - Claudia D Andl
- Burnett School of Biomedical Sciences, University of Central Florida, 4110 Libra Dr., BMS, Building 20, rm 223, Orlando, FL 32816, United States.
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