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Sugano K, Moss SF, Kuipers EJ. Gastric Intestinal Metaplasia: Real Culprit or Innocent Bystander as a Precancerous Condition for Gastric Cancer? Gastroenterology 2023; 165:1352-1366.e1. [PMID: 37652306 DOI: 10.1053/j.gastro.2023.08.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 09/02/2023]
Abstract
Gastric intestinal metaplasia (GIM), which denotes conversion of gastric mucosa into an intestinal phenotype, can occur in all regions of the stomach, including cardiac, fundic, and pyloric mucosa. Since the earliest description of GIM, its association with gastric cancer of the differentiated (intestinal) type has been a well-recognized concern. Many epidemiologic studies have confirmed GIM to be significantly associated with subsequent gastric cancer development. Helicobacter pylori, the principal etiologic factor for gastric cancer, plays the most important role in predisposing to GIM. Although the role of GIM in the stepwise progression model of gastric carcinogenesis (the so-called "Correa cascade") has come into question recently, we review the scientific evidence that strongly supports this long-standing model and propose a new progression model that builds on the Correa cascade. Eradication of H pylori is the most important method for preventing gastric cancer globally, but the effect of eradication on established GIM, is limited, if any. Endoscopic surveillance for GIM may, therefore, be necessary, especially when there is extensive corpus GIM. Recent advances in image-enhanced endoscopy with integrated artificial intelligence have facilitated the identification of GIM and neoplastic lesions, which will impact preventive strategies in the near future.
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Affiliation(s)
| | - Steven F Moss
- Alpert Medical School of Brown University, Providence, Rhode Island
| | - Ernst J Kuipers
- Erasmus Medical Center, Rotterdam and Minister, Ministry of Health, Welfare, and Sport, Hague, The Netherlands
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Kotas ME, O'Leary CE, Locksley RM. Tuft Cells: Context- and Tissue-Specific Programming for a Conserved Cell Lineage. ANNUAL REVIEW OF PATHOLOGY 2023; 18:311-335. [PMID: 36351364 PMCID: PMC10443898 DOI: 10.1146/annurev-pathol-042320-112212] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Tuft cells are found in tissues with distinct stem cell compartments, tissue architecture, and luminal exposures but converge on a shared transcriptional program, including expression of taste transduction signaling pathways. Here, we summarize seminal and recent findings on tuft cells, focusing on major categories of function-instigation of type 2 cytokine responses, orchestration of antimicrobial responses, and emerging roles in tissue repair-and describe tuft cell-derived molecules used to affect these functional programs. We review what is known about the development of tuft cells from epithelial progenitors under homeostatic conditions and during disease. Finally, we discuss evidence that immature, or nascent, tuft cells with potential for diverse functions are driven toward dominant effector programs by tissue- or perturbation-specific contextual cues, which may result in heterogeneous mature tuft cell phenotypes both within and between tissues.
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Affiliation(s)
- Maya E Kotas
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California, San Francisco, California, USA
- Department of Medicine, University of California, San Francisco, California, USA
| | - Claire E O'Leary
- Department of Medicine, University of California, San Francisco, California, USA
- Current affiliation: Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Richard M Locksley
- Department of Medicine, University of California, San Francisco, California, USA
- Department of Microbiology and Immunology, University of California, San Francisco, California, USA;
- Howard Hughes Medical Institute, University of California, San Francisco, California, USA
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New insights into tuft cell formation: Implications for structure–function relationships. Curr Opin Cell Biol 2022; 76:102082. [DOI: 10.1016/j.ceb.2022.102082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/18/2022] [Accepted: 03/24/2022] [Indexed: 11/18/2022]
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Chen X, Li Y, Paiboonrungruang C, Li Y, Peters H, Kist R, Xiong Z. PAX9 in Cancer Development. Int J Mol Sci 2022; 23:5589. [PMID: 35628401 PMCID: PMC9147292 DOI: 10.3390/ijms23105589] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/12/2022] [Accepted: 05/14/2022] [Indexed: 02/05/2023] Open
Abstract
Paired box 9 (PAX9) is a transcription factor of the PAX family functioning as both a transcriptional activator and repressor. Its functional roles in the embryonic development of various tissues and organs have been well studied. However, its roles and molecular mechanisms in cancer development are largely unknown. Here, we review the current understanding of PAX9 expression, upstream regulation of PAX9, and PAX9 downstream events in cancer development. Promoter hypermethylation, promoter SNP, microRNA, and inhibition of upstream pathways (e.g., NOTCH) result in PAX9 silencing or downregulation, whereas gene amplification and an epigenetic axis upregulate PAX9 expression. PAX9 may contribute to carcinogenesis through dysregulation of its transcriptional targets and related molecular pathways. In summary, extensive studies on PAX9 in its cellular and tissue contexts are warranted in various cancers, in particular, HNSCC, ESCC, lung cancer, and cervical SCC.
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Affiliation(s)
- Xiaoxin Chen
- Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA; (X.C.); (Y.L.); (C.P.); (Y.L.)
| | - Yahui Li
- Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA; (X.C.); (Y.L.); (C.P.); (Y.L.)
| | - Chorlada Paiboonrungruang
- Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA; (X.C.); (Y.L.); (C.P.); (Y.L.)
| | - Yong Li
- Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA; (X.C.); (Y.L.); (C.P.); (Y.L.)
- Department of Thoracic Surgery, National Cancer Center, Cancer Hospital of Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli Road, Beijing 100021, China
| | - Heiko Peters
- Newcastle University Biosciences Institute, Newcastle upon Tyne NE2 4BW, UK;
| | - Ralf Kist
- Newcastle University Biosciences Institute, Newcastle upon Tyne NE2 4BW, UK;
- School of Dental Sciences, Newcastle University Centre for Cancer, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4BW, UK
| | - Zhaohui Xiong
- Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA; (X.C.); (Y.L.); (C.P.); (Y.L.)
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Bhol CS, Patil S, Sahu BB, Patra SK, Bhutia SK. The clinical significance and correlative signaling pathways of paired box gene 9 in development and carcinogenesis. Biochim Biophys Acta Rev Cancer 2021; 1876:188561. [PMID: 33965511 DOI: 10.1016/j.bbcan.2021.188561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/29/2021] [Accepted: 04/29/2021] [Indexed: 12/17/2022]
Abstract
Paired box 9 (PAX9) gene belongs to the PAX family, which encodes a family of metazoan transcription factors documented by a conserved DNA binding paired domain 128-amino-acids, critically essential for physiology and development. It is primarily expressed in embryonic tissues, such as the pharyngeal pouch endoderm, somites, neural crest-derived mesenchyme, and distal limb buds. PAX9 plays a vital role in craniofacial development by maintaining the odontogenic potential, mutations, and polymorphisms associated with the risk of tooth agenesis, hypodontia, and crown size in dentition. The loss-of-function of PAX9 in the murine model resulted in a short life span due to the arrest of cleft palate formation and skeletal abnormalities. According to recent studies, the PAX9 gene has a significant role in maintaining squamous cell differentiation, odontoblast differentiation of pluripotent stem cells, deregulation of which is associated with tumor initiation, and malignant transformation. Moreover, PAX9 contributes to promoter hypermethylation and alcohol- induced oro-esophageal squamous cell carcinoma mediated by downregulation of differentiation and apoptosis. Likewise, PAX9 activation is also reported to be associated with drug sensitivity. In summary, this current review aims to understand PAX9 function in the regulation of development, differentiation, and carcinogenesis, along with the underlying signaling pathways for possible cancer therapeutics.
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Affiliation(s)
- Chandra Sekhar Bhol
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Binod Bihari Sahu
- Plant Immunity Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India
| | - Samir Kumar Patra
- Epigenetics and Cancer Research Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India
| | - Sujit Kumar Bhutia
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India.
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