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Verhagen MP, Joosten R, Schmitt M, Valimaki N, Sacchetti A, Rajamaki K, Choi J, Procopio P, Silva S, van der Steen B, van den Bosch TPP, Seinstra D, Doukas M, Augenlicht LH, Aaltonen LA, Fodde R. The origin of intestinal cancer in the context of inflammation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.02.560432. [PMID: 37873142 PMCID: PMC10592905 DOI: 10.1101/2023.10.02.560432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
According to conventional views, colon cancer originates from stem cells. However, inflammation, a key risk factor for colon cancer, was shown to suppress intestinal stemness. Here, we employed Paneth cells (PCs) as a model to assess the capacity of differentiated lineages to trigger tumorigenesis in the context of inflammation. Upon inflammation, PC-specific Apc mutations led to intestinal tumors reminiscent not only of those arising in inflammatory bowel disease (IBD) patients but also of a larger fraction of sporadic colon cancers. The latter is likely due to the inflammatory consequences of Western-style dietary habits, the major colon cancer risk factor. Computational methods designed to predict the cell-of-origin of cancer confirmed that, in a substantial fraction of sporadic colon cancers the cells-of-origin are secretory lineages and not stem cells.
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2
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Shanker EB, Sun J. Salmonella infection acts as an environmental risk factor for human colon cancer. CELL INSIGHT 2023; 2:100125. [PMID: 37886657 PMCID: PMC10597815 DOI: 10.1016/j.cellin.2023.100125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 10/03/2023] [Accepted: 10/03/2023] [Indexed: 10/28/2023]
Abstract
Emerging evidence has demonstrated that perturbations of host-microbial interactions by pathogens can lead to an altered microenvironment that promotes tumorigenesis. A recent study provides new evidence and mechanisms on how repetitive exposure to non-Typhoidal Salmonella (NTS) increases the risk for colon cancer. This study integrated a serological and epidemiological approach with both in vivo and in vitro analyses, showed that the magnitude of exposure to NTS is associated with colonic tumorigenesis. In vivo exposure to repetitive low doses of NTS led to colonic tumors similar as a single high NTS dose in mice. Repetitive NTS infections significantly increase the proliferation of transformed cells in tissue cultures. The research results open new possibilities for the diagnosis, prevention, and treatment of colon cancer. The unanswered questions remain, including validation of the current findings in other cohorts, differences in lifestyle, and changes of gut microbiome after Salmonella infection. Salmonellae exposure can be limited by eating cooked meats and washing vegetables well. It is necessary to develop guidelines and criteria for screenings and follow-ups in people with exposure history to Salmonella and other cancer-associated pathogens.
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Affiliation(s)
- Erin B. Shanker
- Department of Medicine, University of Illinois Chicago, 840 S Wood Street, Room 704 CSB, MC716, Chicago, IL, 60612, USA
| | - Jun Sun
- Department of Medicine, University of Illinois Chicago, 840 S Wood Street, Room 704 CSB, MC716, Chicago, IL, 60612, USA
- Department of Microbiology/Immunology, University of Illinois Chicago, Chicago, IL, 60612, USA
- University of Illinois Cancer Center, 818 S Wolcott Avenue, Chicago, IL, 60612, USA
- Jesse Brown VA Medical Center, 820 S. Damen Avenue, Chicago, IL, 60612, USA
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3
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Abstract
Mouse models of colorectal cancer (CRC) have been crucial in the identification of the role of genes responsible for the full range of pathology of the human disease and have proved to be dependable for testing anti-cancer drugs. Recent research points toward the relevance of tumor, angiogenic, and immune microenvironments in CRC progression to late-stage disease, as well as the treatment of it. This study examines important mouse models in CRC, discussing inherent strengths and weaknesses disclosed during their construction. It endeavors to provide both a synopsis of previous work covering how investigators have defined various models and to evaluate critically how researchers are most likely to use them in the future. Accumulated evidence regarding the metastatic process and the hope of using checkpoint inhibitors and immunological inhibitor therapies points to the need for a genetically engineered mouse model that is both immunocompetent and autochthonous.
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Affiliation(s)
- Melanie Haas Kucherlapati
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Medicine, Division of Genetics, Brigham and Women’s Hospital, Boston, MA, USA
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4
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Bordonaro M. Hypothesis: functional age and onset of autosomal dominant genetic prion disease. Theory Biosci 2023; 142:143-150. [PMID: 37017882 DOI: 10.1007/s12064-023-00389-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 03/10/2023] [Indexed: 04/06/2023]
Abstract
Autosomal dominant diseases typically have an age-related onset. Here, I focus on genetic prion disease (gPrD), caused by various mutations in the PRNP gene. While gPrD typically occurs at or after middle age, there can be considerable variability in the specific age of onset. This variability can occur among patients with the same PRNP mutation; in some cases, these differences occur not only between families but even within the same family. It is not known why gPrD onset is typically delayed for decades when the causative mutation is present from birth. Mouse models of gPrD manifest disease; however, unlike human gPrD, which typically takes decades to manifest, mouse models exhibit disease within months. Therefore, the time to onset of prion disease is proportional to species lifespan; however, it is not known why this is the case. I hypothesize that the initiation of gPrD is strongly influenced by the process of aging; therefore, disease onset is related to proportional functional age (e.g., mice vs. humans). I propose approaches to test this hypothesis and discuss its significance with respect to delaying prion disease through suppression of aging.
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Affiliation(s)
- Michael Bordonaro
- Department of Medical Education, Geisinger Commonwealth School of Medicine, 525 Pine Street, Scranton, PA, 18509, USA.
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5
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Tissue resident iNKT17 cells facilitate cancer cell extravasation in liver metastasis via interleukin-22. Immunity 2023; 56:125-142.e12. [PMID: 36630911 PMCID: PMC9839362 DOI: 10.1016/j.immuni.2022.12.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/09/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023]
Abstract
During metastasis, cancer cells invade, intravasate, enter the circulation, extravasate, and colonize target organs. Here, we examined the role of interleukin (IL)-22 in metastasis. Immune cell-derived IL-22 acts on epithelial tissues, promoting regeneration and healing upon tissue damage, but it is also associated with malignancy. Il22-deficient mice and mice treated with an IL-22 antibody were protected from colon-cancer-derived liver and lung metastasis formation, while overexpression of IL-22 promoted metastasis. Mechanistically, IL-22 acted on endothelial cells, promoting endothelial permeability and cancer cell transmigration via induction of endothelial aminopeptidase N. Multi-parameter flow cytometry and single-cell sequencing of immune cells isolated during cancer cell extravasation into the liver revealed iNKT17 cells as source of IL-22. iNKT-cell-deficient mice exhibited reduced metastases, which was reversed by injection of wild type, but not Il22-deficient, invariant natural killer T (iNKT) cells. IL-22-producing iNKT cells promoting metastasis were tissue resident, as demonstrated by parabiosis. Thus, IL-22 may present a therapeutic target for prevention of metastasis.
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Zhang Y, Zhang J, Xia Y, Sun J. Bacterial translocation and barrier dysfunction enhance colonic tumorigenesis. Neoplasia 2023; 35:100847. [PMID: 36334333 PMCID: PMC9640348 DOI: 10.1016/j.neo.2022.100847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/17/2022] [Accepted: 10/19/2022] [Indexed: 11/05/2022]
Abstract
In the development of colon cancer, the intestinal dysbiosis and disruption of barrier function are common manifestations. In the current study, we hypothesized that host factors, e.g., vitamin D receptor deficiency or adenomatous polyposis coli (APC) mutation, contribute to the enhanced dysbiosis and disrupted barrier in the pathogenesis of colorectal cancer (CRC). Using the human CRC database, we found enhanced tumor-invading bacteria and reduced colonic VDR expression, which was correlated with a reduction of Claudin-10 mRNA and protein. In the colon of VDRΔIEC mice, deletion of intestinal epithelial VDR led to lower protein of tight junction protein Claudin-10. Lacking VDR and a reduction of Claudin-10 are associated with an increased number of tumors in the mice without myeloid VDR. Intestinal permeability was significantly increased in the mice with myeloid VDR conditional deletion. Further, mice with conditional colonic APC mutation showed reduced mucus layer, enhanced bacteria in tumors, and loss of Claudin-10. Our data from human samples and colon cancer models provided solid evidence- on the host factor regulation of bacterial translocation and dysfunction on barriers in colonic tumorigenesis. Studies on the host factor regulation of microbiome and barriers could be potentially applied to risk assessment, early detection, and prevention of colon cancer.
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Affiliation(s)
- Yongguo Zhang
- Department of Medicine, College of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Jilei Zhang
- Department of Medicine, College of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Yinglin Xia
- Department of Medicine, College of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Jun Sun
- Department of Medicine, College of Medicine, University of Illinois Chicago, Chicago, IL, USA; UIC Cancer Center, University of Illinois Chicago, Chicago, IL, USA; Department of Microbiology/Immunology, College of Medicine, University of Illinois Chicago, Chicago, IL, USA; Jesse Brown VA Medical Center Chicago, IL (537), USA.
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7
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Repetitive non-typhoidal Salmonella exposure is an environmental risk factor for colon cancer and tumor growth. Cell Rep Med 2022; 3:100852. [PMID: 36543099 PMCID: PMC9798023 DOI: 10.1016/j.xcrm.2022.100852] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 07/14/2022] [Accepted: 11/17/2022] [Indexed: 12/24/2022]
Abstract
During infection, Salmonella hijacks essential host signaling pathways. These molecular manipulations disrupt cellular integrity and may induce oncogenic transformation. Systemic S. Typhi infections are linked to gallbladder cancer, whereas severe non-typhoidal Salmonella (NTS) infections are associated with colon cancer (CC). These diagnosed infections, however, represent only a small fraction of all NTS infections as many infections are mild and go unnoticed. To assess the overall impact of NTS infections, we performed a retrospective serological study on NTS exposure in patients with CC. The magnitude of exposure to NTS, as measured by serum antibody titer, is significantly positively associated with CC. Repetitively infecting mice with low NTS exposure showed similar accelerated tumor growth to that observed after high NTS exposure. At the cellular level, NTS preferably infects (pre-)transformed cells, and each infection round exponentially increases the rate of transformed cells. Thus, repetitive exposure to NTS associates with CC risk and accelerates tumor growth.
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Won Y, Choi E. Mouse models of Kras activation in gastric cancer. Exp Mol Med 2022; 54:1793-1798. [PMID: 36369466 PMCID: PMC9723172 DOI: 10.1038/s12276-022-00882-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
Gastric cancer has one of the highest incidence rates and is one of the leading causes of cancer-related mortality worldwide. Sequential steps within the carcinogenic process are observed in gastric cancer as well as in pancreatic cancer and colorectal cancer. Kirsten rat sarcoma viral oncogene homolog (KRAS) is the most well-known oncogene and can be constitutively activated by somatic mutations in the gene locus. For over 2 decades, the functions of Kras activation in gastrointestinal (GI) cancers have been studied to elucidate its oncogenic roles during the carcinogenic process. Different approaches have been utilized to generate distinct in vivo models of GI cancer, and a number of mouse models have been established using Kras-inducible systems. In this review, we summarize the genetically engineered mouse models in which Kras is activated with cell-type and/or tissue-type specificity that are utilized for studying carcinogenic processes in gastric cancer as well as pancreatic cancer and colorectal cancer. We also provide a brief description of histological phenotypes and characteristics of those mouse models and the current limitations in the gastric cancer field to be investigated further.
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Affiliation(s)
- Yoonkyung Won
- grid.412807.80000 0004 1936 9916Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232 USA ,grid.412807.80000 0004 1936 9916Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN 37232 USA
| | - Eunyoung Choi
- grid.412807.80000 0004 1936 9916Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232 USA ,grid.412807.80000 0004 1936 9916Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN 37232 USA ,grid.152326.10000 0001 2264 7217Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232 USA
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9
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Cold atmospheric plasma differentially affects cell renewal and differentiation of stem cells and APC-deficient-derived tumor cells in intestinal organoids. Cell Death Dis 2022; 8:66. [PMID: 35169122 PMCID: PMC8847667 DOI: 10.1038/s41420-022-00835-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/16/2021] [Accepted: 01/05/2022] [Indexed: 11/09/2022]
Abstract
Cold atmospheric plasma (CAP) treatment has been proposed as a potentially innovative therapeutic tool in the biomedical field, notably for cancer due to its proposed toxic selectivity on cancer cells versus healthy cells. In the present study, we addressed the relevance of three-dimensional organoid technology to investigate the biological effects of CAP on normal epithelial stem cells and tumor cells isolated from mouse small intestine. CAP treatment exerted dose-dependent cytotoxicity on normal organoids and induced major transcriptomic changes associated with the global response to oxidative stress, fetal-like regeneration reprogramming, and apoptosis-mediated cell death. Moreover, we explored the potential selectivity of CAP on tumor-like Apc-deficient versus normal organoids in the same genetic background. Unexpectedly, tumor organoids exhibited higher resistance to CAP treatment, correlating with higher antioxidant activity at baseline as compared to normal organoids. This pilot study suggests that the ex vivo culture system could be a relevant alternative model to further investigate translational medical applications of CAP technology.
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10
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Pathological oligodendrocyte precursor cells revealed in human schizophrenic brains and trigger schizophrenia-like behaviors and synaptic defects in genetic animal model. Mol Psychiatry 2022; 27:5154-5166. [PMID: 36131044 PMCID: PMC9763102 DOI: 10.1038/s41380-022-01777-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 01/19/2023]
Abstract
Although the link of white matter to pathophysiology of schizophrenia is documented, loss of myelin is not detected in patients at the early stages of the disease, suggesting that pathological evolution of schizophrenia may occur before significant myelin loss. Disrupted-in-schizophrenia-1 (DISC1) protein is highly expressed in oligodendrocyte precursor cells (OPCs) and regulates their maturation. Recently, DISC1-Δ3, a major DISC1 variant that lacks exon 3, has been identified in schizophrenia patients, although its pathological significance remains unknown. In this study, we detected in schizophrenia patients a previously unidentified pathological phenotype of OPCs exhibiting excessive branching. We replicated this phenotype by generating a mouse strain expressing DISC1-Δ3 gene in OPCs. We further demonstrated that pathological OPCs, rather than myelin defects, drive the onset of schizophrenic phenotype by hyperactivating OPCs' Wnt/β-catenin pathway, which consequently upregulates Wnt Inhibitory Factor 1 (Wif1), leading to the aberrant synaptic formation and neuronal activity. Suppressing Wif1 in OPCs rescues synaptic loss and behavioral disorders in DISC1-Δ3 mice. Our findings reveal the pathogenetic role of OPC-specific DISC1-Δ3 variant in the onset of schizophrenia and highlight the therapeutic potential of Wif1 as an alternative target for the treatment of this disease.
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11
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Glenny EM, Coleman MF, Giles ED, Wellberg EA, Hursting SD. Designing Relevant Preclinical Rodent Models for Studying Links Between Nutrition, Obesity, Metabolism, and Cancer. Annu Rev Nutr 2021; 41:253-282. [PMID: 34357792 DOI: 10.1146/annurev-nutr-120420-032437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Diet and nutrition are intricately related to cancer prevention, growth, and treatment response. Preclinical rodent models are a cornerstone to biomedical research and remain instrumental in our understanding of the relationship between cancer and diet and in the development of effective therapeutics. However, the success rate of translating promising findings from the bench to the bedside is suboptimal. Well-designed rodent models will be crucial to improving the impact basic science has on clinical treatment options. This review discusses essential experimental factors to consider when designing a preclinical cancer model with an emphasis on incorporating these models into studies interrogating diet, nutrition, and metabolism. The aims of this review are to (a) provide insight into relevant considerations when designing cancer models for obesity, nutrition, and metabolism research; (b) identify common pitfalls when selecting a rodent model; and (c) discuss strengths and limitations of available preclinical models. Expected final online publication date for the Annual Review of Nutrition, Volume 41 is September 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Elaine M Glenny
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Michael F Coleman
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Erin D Giles
- Department of Nutrition, Texas A&M University, College Station, Texas 77843, USA
| | - Elizabeth A Wellberg
- Department of Pathology, University of Oklahoma Health Science Center, Oklahoma City, Oklahoma 73104, USA
| | - Stephen D Hursting
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; .,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, North Carolina 28081, USA
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12
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Niu J, Yu G, Wang X, Xia W, Wang Y, Hoi KK, Mei F, Xiao L, Chan JR, Fancy SPJ. Oligodendroglial ring finger protein Rnf43 is an essential injury-specific regulator of oligodendrocyte maturation. Neuron 2021; 109:3104-3118.e6. [PMID: 34390652 DOI: 10.1016/j.neuron.2021.07.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 04/06/2021] [Accepted: 07/21/2021] [Indexed: 12/31/2022]
Abstract
Oligodendrocyte (OL) maturation arrest in human white matter injury contributes significantly to the failure of endogenous remyelination in multiple sclerosis (MS) and newborn brain injuries such as hypoxic ischemic encephalopathy (HIE) that cause cerebral palsy. In this study, we identify an oligodendroglial-intrinsic factor that controls OL maturation specifically in the setting of injury. We find a requirement for the ring finger protein Rnf43 not in normal development but in neonatal hypoxic injury and remyelination in the adult mammalian CNS. Rnf43, but not the related Znrf3, is potently activated by Wnt signaling in OL progenitor cells (OPCs) and marks activated OPCs in human MS and HIE. Rnf43 is required in an injury-specific context, and it promotes OPC differentiation through negative regulation of Wnt signal strength in OPCs at the level of Fzd1 receptor presentation on the cell surface. Inhibition of Fzd1 using UM206 promotes remyelination following ex vivo and in vivo demyelinating injury.
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Affiliation(s)
- Jianqin Niu
- Department of Neurology, University of California at San Francisco, San Francisco, CA 94158, USA; Department of Pediatrics, University of California at San Francisco, San Francisco, CA 94158, USA; Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China; Institute of Brain and Intelligence, Third Military Medical University, Chongqing 400038, China.
| | - Guangdan Yu
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Xiaorui Wang
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Wenlong Xia
- Department of Neurology, University of California at San Francisco, San Francisco, CA 94158, USA
| | - Yuxin Wang
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Kimberly K Hoi
- Department of Neurology, University of California at San Francisco, San Francisco, CA 94158, USA
| | - Feng Mei
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China; Institute of Brain and Intelligence, Third Military Medical University, Chongqing 400038, China
| | - Lan Xiao
- Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China; Institute of Brain and Intelligence, Third Military Medical University, Chongqing 400038, China
| | - Jonah R Chan
- Department of Neurology, University of California at San Francisco, San Francisco, CA 94158, USA; Division of Neuroimmunology and Glial Biology, University of California at San Francisco, San Francisco, CA 94158, USA
| | - Stephen P J Fancy
- Department of Neurology, University of California at San Francisco, San Francisco, CA 94158, USA; Department of Pediatrics, University of California at San Francisco, San Francisco, CA 94158, USA; Division of Neuroimmunology and Glial Biology, University of California at San Francisco, San Francisco, CA 94158, USA; Newborn Brain Research Institute, University of California at San Francisco, San Francisco, CA 94158, USA.
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13
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Role of adenomatous polyposis coli in proliferation and differentiation of colon epithelial cells in organoid culture. Sci Rep 2021; 11:3980. [PMID: 33597597 PMCID: PMC7889860 DOI: 10.1038/s41598-021-83590-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 02/05/2021] [Indexed: 12/24/2022] Open
Abstract
Adenomatous polyposis coli (APC) is a tumor-suppressing protein whose inactivation triggers the formation of colorectal polyps. Numerous studies using cell lines or genetically engineered mice have revealed its role in suppressing Wnt/β-catenin signaling pathway and regulating cell proliferation and differentiation. Here, we performed genetic analyses of APC using a three-dimensional organoid culture of mouse colon epithelia, which enables the detailed examination of epithelial properties. Analyses of Apc-knockout colon organoids not only confirmed the importance of APC in suppressing Wnt/β-catenin signaling and regulating cell differentiation, but also revealed several novel features: a significant decrease in proliferating speed and an increase in cross-sectional area of cells. Moreover, we found a significant number of lysozyme-positive Paneth-like cells, which were never observed in wild-type colon tissues or organoids, but have been reported to emerge in colon cancers. Therefore, APC autonomously suppresses ectopic differentiation into lysozyme-positive cells, specifically in the colon epithelia. Colon organoids would be an ideal material to investigate the molecular mechanism and biological importance of the ectopic differentiation associated with cancer development.
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14
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Geyer N, Gerling M. Hedgehog Signaling in Colorectal Cancer: All in the Stroma? Int J Mol Sci 2021; 22:ijms22031025. [PMID: 33498528 PMCID: PMC7864206 DOI: 10.3390/ijms22031025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/18/2021] [Accepted: 01/18/2021] [Indexed: 12/13/2022] Open
Abstract
Hedgehog (Hh) signaling regulates intestinal development and homeostasis. The role of Hh signaling in cancer has been studied for many years; however, its role in colorectal cancer (CRC) remains controversial. It has become increasingly clear that the “canonical” Hh pathway, in which ligand binding to the receptor PTCH1 initiates a signaling cascade that culminates in the activation of the GLI transcription factors, is mainly organized in a paracrine manner, both in the healthy colon and in CRC. Such canonical Hh signals largely act as tumor suppressors. In addition, stromal Hh signaling has complex immunomodulatory effects in the intestine with a potential impact on carcinogenesis. In contrast, non-canonical Hh activation may have tumor-promoting roles in a subset of CRC tumor cells. In this review, we attempt to summarize the current knowledge of the Hh pathway in CRC, with a focus on the tumor-suppressive role of canonical Hh signaling in the stroma. Despite discouraging results from clinical trials using Hh inhibitors in CRC and other solid cancers, we argue that a more granular understanding of Hh signaling might allow the exploitation of this key morphogenic pathway for cancer therapy in the future.
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Affiliation(s)
- Natalie Geyer
- Department of Biosciences and Nutrition, Karolinska Institutet, 14183 Huddinge, Sweden;
| | - Marco Gerling
- Department of Biosciences and Nutrition, Karolinska Institutet, 14183 Huddinge, Sweden;
- Theme Cancer, Oncology, Karolinska University Hospital, 17176 Solna, Sweden
- Correspondence:
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15
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Bürtin F, Mullins CS, Linnebacher M. Mouse models of colorectal cancer: Past, present and future perspectives. World J Gastroenterol 2020; 26:1394-1426. [PMID: 32308343 PMCID: PMC7152519 DOI: 10.3748/wjg.v26.i13.1394] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/05/2020] [Accepted: 03/09/2020] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is the third most common diagnosed malignancy among both sexes in the United States as well as in the European Union. While the incidence and mortality rates in western, high developed countries are declining, reflecting the success of screening programs and improved treatment regimen, a rise of the overall global CRC burden can be observed due to lifestyle changes paralleling an increasing human development index. Despite a growing insight into the biology of CRC and many therapeutic improvements in the recent decades, preclinical in vivo models are still indispensable for the development of new treatment approaches. Since the development of carcinogen-induced rodent models for CRC more than 80 years ago, a plethora of animal models has been established to study colon cancer biology. Despite tenuous invasiveness and metastatic behavior, these models are useful for chemoprevention studies and to evaluate colitis-related carcinogenesis. Genetically engineered mouse models (GEMM) mirror the pathogenesis of sporadic as well as inherited CRC depending on the specific molecular pathways activated or inhibited. Although the vast majority of CRC GEMM lack invasiveness, metastasis and tumor heterogeneity, they still have proven useful for examination of the tumor microenvironment as well as systemic immune responses; thus, supporting development of new therapeutic avenues. Induction of metastatic disease by orthotopic injection of CRC cell lines is possible, but the so generated models lack genetic diversity and the number of suited cell lines is very limited. Patient-derived xenografts, in contrast, maintain the pathological and molecular characteristics of the individual patient’s CRC after subcutaneous implantation into immunodeficient mice and are therefore most reliable for preclinical drug development – even in comparison to GEMM or cell line-based analyses. However, subcutaneous patient-derived xenograft models are less suitable for studying most aspects of the tumor microenvironment and anti-tumoral immune responses. The authors review the distinct mouse models of CRC with an emphasis on their clinical relevance and shed light on the latest developments in the field of preclinical CRC models.
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Affiliation(s)
- Florian Bürtin
- Department of General, Visceral, Vascular and Transplantation Surgery, University Medical Center Rostock, University of Rostock, Rostock 18057, Germany
| | - Christina S Mullins
- Department of Thoracic Surgery, University Medical Center Rostock, University of Rostock, Rostock 18057, Germany
| | - Michael Linnebacher
- Molecular Oncology and Immunotherapy, Department of General, Visceral, Vascular and Transplantation Surgery, University Medical Center Rostock, Rostock 18057, Germany
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16
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Souris JS, Zhang HJ, Dougherty U, Chen NT, Waller JV, Lo LW, Hart J, Chen CT, Bissonnette M. A novel mouse model of sporadic colon cancer induced by combination of conditional Apc genes and chemical carcinogen in the absence of Cre recombinase. Carcinogenesis 2019; 40:1376-1386. [PMID: 30859181 PMCID: PMC6875902 DOI: 10.1093/carcin/bgz050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 01/27/2019] [Accepted: 03/08/2019] [Indexed: 02/07/2023] Open
Abstract
Although valuable insights into colon cancer biology have been garnered from human colon cancer cell lines and primary colonic tissues, and animal studies using human colon cancer xenografts, immunocompetent mouse models of spontaneous or chemically induced colon cancer better phenocopy human disease. As most sporadic human colon tumors present adenomatous polyposis coli (APC) gene mutations, considerable effort has gone into developing mice that express mutant Apc alleles that mimic human colon cancer pathogenesis. A serious limitation of many of these Apc-mutant murine models, however, is that these mice develop numerous tumors in the small intestine but few, if any, in the colon. In this work, we examined three spontaneous mouse models of colon tumorigenesis based upon the widely used multiple intestinal neoplasia (Min) mouse: mice with either constitutive or conditional Apc mutations alone or in combination with caudal-related homeobox transcription factor CDX2P-Cre transgene - either with or without exposure to the potent colon carcinogen azoxymethane. Using the CDX2 promoter to drive Cre recombinase transgene expression effectively inactivated Apc in colonocytes, creating a model with earlier tumor onset and increased tumor incidence/burden, but without the Min mouse model's small intestine tumorigenesis and susceptibility to intestinal perforation/ulceration/hemorrhage. Most significantly, azoxymethane-treated mice with conditional Apc expression, but absent the Cre recombinase gene, demonstrated nearly 50% tumor incidence with two or more large colon tumors per mouse of human-like histology, but no small intestine tumors - unlike the azoxymethane-resistant C57BL/6J-background Min mouse model. As such this model provides a robust platform for chemoprevention studies.
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Affiliation(s)
- Jeffrey S Souris
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Hannah J Zhang
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | | | - Nai-Tzu Chen
- Institute of New Drug Development, China Medical University, Taichung, Taiwan
| | - Joseph V Waller
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Leu-Wei Lo
- Department of Radiology, The University of Chicago, Chicago, IL, USA
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - John Hart
- Department of Pathology, The University of Chicago, Chicago, IL, USA
| | - Chin-Tu Chen
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Marc Bissonnette
- Department of Medicine, The University of Chicago, Chicago, IL, USA
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17
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Human Colorectal Cancer from the Perspective of Mouse Models. Genes (Basel) 2019; 10:genes10100788. [PMID: 31614493 PMCID: PMC6826908 DOI: 10.3390/genes10100788] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/25/2019] [Accepted: 10/08/2019] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) is a heterogeneous disease that includes both hereditary and sporadic types of tumors. Tumor initiation and growth is driven by mutational or epigenetic changes that alter the function or expression of multiple genes. The genes predominantly encode components of various intracellular signaling cascades. In this review, we present mouse intestinal cancer models that include alterations in the Wnt, Hippo, p53, epidermal growth factor (EGF), and transforming growth factor β (TGFβ) pathways; models of impaired DNA mismatch repair and chemically induced tumorigenesis are included. Based on their molecular biology characteristics and mutational and epigenetic status, human colorectal carcinomas were divided into four so-called consensus molecular subtype (CMS) groups. It was shown subsequently that the CMS classification system could be applied to various cell lines derived from intestinal tumors and tumor-derived organoids. Although the CMS system facilitates characterization of human CRC, individual mouse models were not assigned to some of the CMS groups. Thus, we also indicate the possible assignment of described animal models to the CMS group. This might be helpful for selection of a suitable mouse strain to study a particular type of CRC.
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18
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Metzger R, Maruskova M, Krebs S, Janssen KP, Krug AB. Increased Incidence of Colon Tumors in AOM-Treated Apc 1638N/+ Mice Reveals Higher Frequency of Tumor Associated Neutrophils in Colon Than Small Intestine. Front Oncol 2019; 9:1001. [PMID: 31681563 PMCID: PMC6797844 DOI: 10.3389/fonc.2019.01001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/17/2019] [Indexed: 12/13/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common cancers and a major cause of mortality. Mice with truncating Apc germline mutations have been used as a standard model of CRC, but most of the Apc-mutated lines develop multiple tumors in the proximal small intestine and rarely in the colon precluding detailed analysis of colon tumor microenvironment. Our aim was to develop a model with higher resemblance to human CRC and to characterize tumor infiltrating immune cells in spontaneously developing colon tumors compared to small intestinal tumors. Therefore, the Apc1638N/+ line was treated repeatedly with azoxymethane (AOM) and 90% colon tumor incidence and 4 to 5 colon tumors per mouse were achieved. Of note, AOM treatment specifically increased the tumor burden in the colon, but not in the small intestine. Histological grading and WNT-signaling activity did not differ significantly between small intestinal and colon tumors with some lesions progressing to invasive adenocarcinoma in both locations. However, characterization of the intratumoral myeloid cell compartment revealed a massive infiltration of colon tumors with neutrophils − 6-fold higher than in small intestinal tumors. Moreover, CCL17-expressing macrophages and dendritic cells accumulated in the tumors indicating the establishment of a tumor-promoting immunosuppressive environment. Thus, Apc1638N/+ mice treated with AOM are a suitable and straightforward model to study the influence of immune cells and chemokines on colon carcinogenesis.
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Affiliation(s)
- Rebecca Metzger
- Biomedical Center, Institute for Immunology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Mahulena Maruskova
- Biomedical Center, Institute for Immunology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Sabrina Krebs
- Biomedical Center, Institute for Immunology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Klaus-Peter Janssen
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Anne B Krug
- Biomedical Center, Institute for Immunology, Ludwig-Maximilians-University Munich, Munich, Germany
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19
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Sun X, Ng TTH, Sham KWY, Zhang L, Chan MTV, Wu WKK, Cheng CHK. Bufalin, a Traditional Chinese Medicine Compound, Prevents Tumor Formation in Two Murine Models of Colorectal Cancer. Cancer Prev Res (Phila) 2019; 12:653-666. [PMID: 31431500 DOI: 10.1158/1940-6207.capr-19-0134] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 06/24/2019] [Accepted: 08/16/2019] [Indexed: 12/24/2022]
Abstract
Chemoprevention is cost-effective for colorectal cancer when targeted at intermediate- or high-risk populations. Bufalin is a cardiac glycoside extracted from the traditional Chinese medicine (TCM) "Chan Su," which has been used as an anticancer agent. On the basis of the relative safety of bufalin, we investigated whether bufalin could act as a chemoprophylactic agent to prevent colon tumorigenesis in two murine models, namely colitis-associated colorectal cancer and Apc germline mutation-developed colorectal cancer. Our results revealed that long-term (12-16 weeks) administration of low-dose bufalin (0.5 mg/kg) effectively suppressed tumorigenesis in both colorectal cancer models, accompanied by attenuated epithelial cell proliferation (reduced bromodeoxyuridine incorporation, lower levels of cyclin A, cyclin D1, cyclin E, and cyclin-dependent kinases-2/4, and higher levels of p21 and p27) and promoted apoptosis (increased TUNEL positivity and caspase-3/9 cleavages, reduced levels of Bcl-2, Bcl-xL and survivin, and increased levels of Bax and Bak). Bufalin also suppressed the expression of proinflammatory mediators [reduced levels of cyclooxygenase-2, tumor TNFα, IL1β, IL6, C-X-C motif chemokine ligand (CXCL)-1, CXCL-2, and CXCL-5] in the colitis-associated colorectal cancer model. These effects were associated with the inhibition of oncogenic NF-κB and PI3K/Akt pathways. Our findings unveil a novel chemoprophylactic action of bufalin in colorectal cancer in vivo and provided efficacy data and mechanistic evidence for further clinical evaluation of this TCM compound for colorectal cancer chemoprevention in individuals at risk of colorectal cancer.
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Affiliation(s)
- Xiao Sun
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Tony T H Ng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Kathy W Y Sham
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Lin Zhang
- State Key Laboratory of Digestive Diseases, Institute of Digestive Diseases and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong.,Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - William K K Wu
- State Key Laboratory of Digestive Diseases, Institute of Digestive Diseases and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong. .,Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong.,CUHK Shenzhen Research Institute, Shenzhen, China
| | - Christopher H K Cheng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong. .,CUHK Shenzhen Research Institute, Shenzhen, China
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20
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Niu J, Tsai HH, Hoi KK, Huang N, Yu G, Kim K, Baranzini SE, Xiao L, Chan JR, Fancy SPJ. Aberrant oligodendroglial-vascular interactions disrupt the blood-brain barrier, triggering CNS inflammation. Nat Neurosci 2019; 22:709-718. [PMID: 30988524 PMCID: PMC6486410 DOI: 10.1038/s41593-019-0369-4] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 02/20/2019] [Indexed: 01/01/2023]
Abstract
Disruption of the blood-brain barrier (BBB) is critical to initiation and perpetuation of disease in multiple sclerosis (MS). We report an interaction between oligodendroglia and vasculature in MS that distinguishes human white matter injury from normal rodent demyelinating injury. We find perivascular clustering of oligodendrocyte precursor cells (OPCs) in certain active MS lesions, representing an inability to properly detach from vessels following perivascular migration. Perivascular OPCs can themselves disrupt the BBB, interfering with astrocyte endfeet and endothelial tight junction integrity, resulting in altered vascular permeability and an associated CNS inflammation. Aberrant Wnt tone in OPCs mediates their dysfunctional vascular detachment and also leads to OPC secretion of Wif1, which interferes with Wnt ligand function on endothelial tight junction integrity. Evidence for this defective oligodendroglial-vascular interaction in MS suggests that aberrant OPC perivascular migration not only impairs their lesion recruitment but can also act as a disease perpetuator via disruption of the BBB.
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Affiliation(s)
- Jianqin Niu
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
- Department of Histology and Embryology, Collaborative Innovation Center for Brain Research, Third Military Medical University, Chongqing, China
| | - Hui-Hsin Tsai
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - Kimberly K Hoi
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - Nanxin Huang
- Department of Histology and Embryology, Collaborative Innovation Center for Brain Research, Third Military Medical University, Chongqing, China
| | - Guangdan Yu
- Department of Histology and Embryology, Collaborative Innovation Center for Brain Research, Third Military Medical University, Chongqing, China
| | - Kicheol Kim
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - Sergio E Baranzini
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - Lan Xiao
- Department of Histology and Embryology, Collaborative Innovation Center for Brain Research, Third Military Medical University, Chongqing, China
| | - Jonah R Chan
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - Stephen P J Fancy
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA.
- Department of Pediatrics, University of California at San Francisco, San Francisco, CA, USA.
- Division of Neuroimmunology and Glial Biology, University of California at San Francisco, San Francisco, CA, USA.
- Newborn Brain Research Institute, University of California at San Francisco, San Francisco, CA, USA.
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21
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Washington K, Zemper AED. Apc-related models of intestinal neoplasia: a brief review for pathologists. SURGICAL AND EXPERIMENTAL PATHOLOGY 2019. [DOI: 10.1186/s42047-019-0036-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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22
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Wang Z, Liu CH, Huang S, Chen J. Wnt Signaling in vascular eye diseases. Prog Retin Eye Res 2018; 70:110-133. [PMID: 30513356 DOI: 10.1016/j.preteyeres.2018.11.008] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/21/2018] [Accepted: 11/28/2018] [Indexed: 12/16/2022]
Abstract
The Wnt signaling pathway plays a pivotal role in vascular morphogenesis in various organs including the eye. Wnt ligands and receptors are key regulators of ocular angiogenesis both during the eye development and in vascular eye diseases. Wnt signaling participates in regulating multiple vascular beds in the eye including regression of the hyaloid vessels, and development of structured layers of vasculature in the retina. Loss-of-function mutations in Wnt signaling components cause rare genetic eye diseases in humans such as Norrie disease, and familial exudative vitreoretinopathy (FEVR) with defective ocular vasculature. On the other hand, experimental studies in more prevalent vascular eye diseases, such as wet age-related macular degeneration (AMD), diabetic retinopathy (DR), retinopathy of prematurity (ROP), and corneal neovascularization, suggest that aberrantly increased Wnt signaling is one of the causations for pathological ocular neovascularization, indicating the potential of modulating Wnt signaling to ameliorate pathological angiogenesis in eye diseases. This review recapitulates the key roles of the Wnt signaling pathway during ocular vascular development and in vascular eye diseases, and pharmaceutical approaches targeting the Wnt signaling as potential treatment options.
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Affiliation(s)
- Zhongxiao Wang
- Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States
| | - Chi-Hsiu Liu
- Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States
| | - Shuo Huang
- Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States
| | - Jing Chen
- Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, United States.
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23
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The role of Pygo2 for Wnt/ß-catenin signaling activity during intestinal tumor initiation and progression. Oncotarget 2018; 7:80612-80632. [PMID: 27811361 PMCID: PMC5348345 DOI: 10.18632/oncotarget.13016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 10/21/2016] [Indexed: 12/16/2022] Open
Abstract
Pygo2 acts as a co-activator of Wnt signaling in a nuclear complex with ß-catenin/BCL9/BCL9-2 to increase target gene transcription. Previous studies showed that Pygo2 is upregulated in murine intestinal tumors and human colon cancer, but is apparently dispensable for normal intestinal homeostasis. Here, we have evaluated the in vivo role of Pygo2 during intestinal tumorigenesis using Pygo2 deficient mice. We analyzed chemically induced colon tumor development and conditional intestine specific mouse models harboring either Apc loss-of-function (LOF) or Ctnnb1 gain-of-function (ß-catenin GOF). Remarkably, the number and size of chemically induced tumors was significantly reduced in Pygo2 deficient mice, suggesting that Pygo2 has a tumor promoting function. Furthermore, loss of Pygo2 rescued early tumorigenesis of Ctnnb1 GOF mutants. In contrast, Pygo2 ablation was not sufficient to prevent tumor development of Apc LOF mice. The effect on tumor formation by Pygo2 knockout was linked to the repression of specific deregulated Wnt target genes, in particular of c-Myc. Moreover, the role of Pygo2 appears to be associated with the signaling output of deregulated Wnt signaling in the different tumor models. Thus, targeting Pygo2 might provide a novel strategy to suppress tumor formation in a context dependent manner.
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24
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Romano G, Chagani S, Kwong LN. The path to metastatic mouse models of colorectal cancer. Oncogene 2018; 37:2481-2489. [DOI: 10.1038/s41388-018-0155-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/28/2017] [Accepted: 01/02/2018] [Indexed: 02/07/2023]
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25
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mTORC1 Inactivation Promotes Colitis-Induced Colorectal Cancer but Protects from APC Loss-Dependent Tumorigenesis. Cell Metab 2018; 27:118-135.e8. [PMID: 29275959 DOI: 10.1016/j.cmet.2017.11.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/21/2017] [Accepted: 11/15/2017] [Indexed: 01/17/2023]
Abstract
Dietary habits that can induce inflammatory bowel disease (IBD) are major colorectal cancer (CRC) risk factors, but mechanisms linking nutrients, IBD, and CRC are unknown. Using human data and mouse models, we show that mTORC1 inactivation-induced chromosomal instability impairs intestinal crypt proliferation and regeneration, CDK4/6 dependently. This triggers interleukin (IL)-6-associated reparative inflammation, inducing crypt hyper-proliferation, wound healing, and CRC. Blocking IL-6 signaling or reactivating mTORC1 reduces inflammation-induced CRC, so mTORC1 activation suppresses tumorigenesis in IBD. Conversely, mTORC1 inactivation is beneficial in APC loss-dependent CRC. Thus, IL-6 blockers or protein-rich-diet-linked mTORC1 activation may prevent IBD-associated CRC. However, abolishing mTORC1 can mitigate CRC in predisposed patients with APC mutations. Our work reveals mTORC1 oncogenic and tumor-suppressive roles in intestinal epithelium and avenues to optimized and personalized therapeutic regimens for CRC.
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26
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Tan SH, Barker N. Wnt Signaling in Adult Epithelial Stem Cells and Cancer. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 153:21-79. [PMID: 29389518 DOI: 10.1016/bs.pmbts.2017.11.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Wnt/β-catenin signaling is integral to the homeostasis and regeneration of many epithelial tissues due to its critical role in adult stem cell regulation. It is also implicated in many epithelial cancers, with mutations in core pathway components frequently present in patient tumors. In this chapter, we discuss the roles of Wnt/β-catenin signaling and Wnt-regulated stem cells in homeostatic, regenerative and cancer contexts of the intestines, stomach, skin, and liver. We also examine the sources of Wnt ligands that form part of the stem cell niche. Despite the diversity in characteristics of various tissue stem cells, the role(s) of Wnt/β-catenin signaling is generally coherent in maintaining stem cell fate and/or promoting proliferation. It is also likely to play similar roles in cancer stem cells, making the pathway a salient therapeutic target for cancer. While promising progress is being made in the field, deeper understanding of the functions and signaling mechanisms of the pathway in individual epithelial tissues will expedite efforts to modulate Wnt/β-catenin signaling in cancer treatment and tissue regeneration.
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Affiliation(s)
- Si Hui Tan
- A*STAR Institute of Medical Biology, Singapore
| | - Nick Barker
- A*STAR Institute of Medical Biology, Singapore; Kanazawa University, Kanazawa, Japan; Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom.
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27
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Boutin AT, Liao WT, Wang M, Hwang SS, Karpinets TV, Cheung H, Chu GC, Jiang S, Hu J, Chang K, Vilar E, Song X, Zhang J, Kopetz S, Futreal A, Wang YA, Kwong LN, DePinho RA. Oncogenic Kras drives invasion and maintains metastases in colorectal cancer. Genes Dev 2017; 31:370-382. [PMID: 28289141 PMCID: PMC5358757 DOI: 10.1101/gad.293449.116] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 02/15/2017] [Indexed: 12/21/2022]
Abstract
Human colorectal cancer (CRC) is a major cause of cancer mortality and frequently harbors activating mutations in the KRAS gene. To understand the role of oncogenic KRAS in CRC, we engineered a mouse model of metastatic CRC that harbors an inducible oncogenic Kras allele (Krasmut ) and conditional null alleles of Apc and Trp53 (iKAP). The iKAP model recapitulates tumor progression from adenoma through metastases. Whole-exome sequencing revealed that the Krasmut allele was heterogenous in primary tumors yet homogenous in metastases, a pattern consistent with activated Krasmut signaling being a driver of progression to metastasis. System-level and functional analyses revealed the TGF-β pathway as a key mediator of Krasmut -driven invasiveness. Genetic extinction of Krasmut resulted in specific elimination of the Krasmut subpopulation in primary and metastatic tumors, leading to apoptotic elimination of advanced invasive and metastatic disease. This faithful CRC model provides genetic evidence that Krasmut drives CRC invasion and maintenance of metastases.
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Affiliation(s)
- Adam T Boutin
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Wen-Ting Liao
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Melody Wang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Soyoon Sarah Hwang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Tatiana V Karpinets
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Hannah Cheung
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Gerald C Chu
- Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Shan Jiang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Jian Hu
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Kyle Chang
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Eduardo Vilar
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.,Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Xingzhi Song
- Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Jianhua Zhang
- Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Scott Kopetz
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Andrew Futreal
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Y Alan Wang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Lawrence N Kwong
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.,Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Ronald A DePinho
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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28
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Mcilhatton MA, Boivin GP, Groden J. Manipulation of DNA Repair Proficiency in Mouse Models of Colorectal Cancer. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1414383. [PMID: 27413734 PMCID: PMC4931062 DOI: 10.1155/2016/1414383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/09/2016] [Indexed: 12/20/2022]
Abstract
Technical and biological innovations have enabled the development of more sophisticated and focused murine models that increasingly recapitulate the complex pathologies of human diseases, in particular cancer. Mouse models provide excellent in vivo systems for deciphering the intricacies of cancer biology within the context of precise experimental settings. They present biologically relevant, adaptable platforms that are amenable to continual improvement and refinement. We discuss how recent advances in our understanding of tumorigenesis and the underlying deficiencies of DNA repair mechanisms that drive it have been informed by using genetically engineered mice to create defined, well-characterized models of human colorectal cancer. In particular, we focus on how mechanisms of DNA repair can be manipulated precisely to create in vivo models whereby the underlying processes of tumorigenesis are accelerated or attenuated, dependent on the composite alleles carried by the mouse model. Such models have evolved to the stage where they now reflect the initiation and progression of sporadic cancers. The review is focused on mouse models of colorectal cancer and how insights from these models have been instrumental in shaping our understanding of the processes and potential therapies for this disease.
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Affiliation(s)
- Michael A. Mcilhatton
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Gregory P. Boivin
- Department of Pathology, Boonshoft School of Medicine, Wright State University, Health Sciences Building 053, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA
| | - Joanna Groden
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
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29
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Tsai HH, Niu J, Munji R, Davalos D, Chang J, Zhang H, Tien AC, Kuo CJ, Chan JR, Daneman R, Fancy SPJ. Oligodendrocyte precursors migrate along vasculature in the developing nervous system. Science 2016; 351:379-84. [PMID: 26798014 PMCID: PMC5472053 DOI: 10.1126/science.aad3839] [Citation(s) in RCA: 281] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oligodendrocytes myelinate axons in the central nervous system and develop from oligodendrocyte precursor cells (OPCs) that must first migrate extensively during brain and spinal cord development. We show that OPCs require the vasculature as a physical substrate for migration. We observed that OPCs of the embryonic mouse brain and spinal cord, as well as the human cortex, emerge from progenitor domains and associate with the abluminal endothelial surface of nearby blood vessels. Migrating OPCs crawl along and jump between vessels. OPC migration in vivo was disrupted in mice with defective vascular architecture but was normal in mice lacking pericytes. Thus, physical interactions with the vascular endothelium are required for OPC migration. We identify Wnt-Cxcr4 (chemokine receptor 4) signaling in regulation of OPC-endothelial interactions and propose that this signaling coordinates OPC migration with differentiation.
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Affiliation(s)
- Hui-Hsin Tsai
- Department of Pediatrics, University of California at San Francisco (UCSF), San Francisco, CA 94158, USA
| | - Jianqin Niu
- Department of Pediatrics, University of California at San Francisco (UCSF), San Francisco, CA 94158, USA
| | - Roeben Munji
- Departments of Pharmacology and Neuroscience, University of California at San Diego (UCSD), San Diego, CA 92093, USA
| | - Dimitrios Davalos
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Junlei Chang
- Division of Hematology, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Haijing Zhang
- Division of Hematology, Department of Medicine, Stanford University, Stanford, CA 94305, USA. Department of Urology, Cleveland Clinic Foundation, Cleveland, OH 44195, USA. Howard Hughes Medical Institute (HHMI), Chevy Chase, MD 20815, USA. Duke University School of Medicine, Durham, NC 27710, USA
| | - An-Chi Tien
- Department of Pediatrics, University of California at San Francisco (UCSF), San Francisco, CA 94158, USA
| | - Calvin J Kuo
- Division of Hematology, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Jonah R Chan
- Department of Neurology, UCSF, San Francisco, CA 94158, USA
| | - Richard Daneman
- Departments of Pharmacology and Neuroscience, University of California at San Diego (UCSD), San Diego, CA 92093, USA
| | - Stephen P J Fancy
- Department of Pediatrics, University of California at San Francisco (UCSF), San Francisco, CA 94158, USA. Department of Neurology, UCSF, San Francisco, CA 94158, USA. Division of Neonatology, UCSF, San Francisco, CA 94158, USA. Newborn Brain Research Institute, UCSF, San Francisco, CA 94158, USA.
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30
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Jackstadt R, Sansom OJ. Mouse models of intestinal cancer. J Pathol 2016; 238:141-51. [PMID: 26414675 PMCID: PMC4832380 DOI: 10.1002/path.4645] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 09/21/2015] [Accepted: 09/23/2015] [Indexed: 12/19/2022]
Abstract
Murine models of intestinal cancer are powerful tools to recapitulate human intestinal cancer, understand its biology and test therapies. With recent developments identifying the importance of the tumour microenvironment and the potential for immunotherapy, autochthonous genetically engineered mouse models (GEMMs) will remain an important part of preclinical studies for the foreseeable future. This review will provide an overview of the current mouse models of intestinal cancer, from the Apc(Min/+) mouse, which has been used for over 25 years, to the latest 'state-of-the-art' organoid models. We discuss here how these models have been used to define fundamental processes involved in tumour initiation and the attempts to generate metastatic models, which is the ultimate cause of cancer mortality. Together these models will provide key insights to understand this complex disease and hopefully will lead to the discovery of new therapeutic strategies.
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From mice to men: Murine models of colorectal cancer for use in translational research. Crit Rev Oncol Hematol 2015; 98:94-105. [PMID: 26558688 DOI: 10.1016/j.critrevonc.2015.10.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/28/2015] [Accepted: 10/27/2015] [Indexed: 12/18/2022] Open
Abstract
Colorectal cancer (CRC) is the third most common carcinoma worldwide and despite advances in treatment, survival for patients with metastatic disease remains poor. With nearly 50% of patients developing metastases, in vivo investigation is essential to improve outcomes for these patients and numerous murine models of CRC have been developed to allow the study of chemoprevention and chemotherapy, in addition to improving our understanding of the pathogenesis of CRC. Selecting the most appropriate murine model for a specific application will maximize the conversion of potential therapies from the laboratory to clinical practice and requires an understanding of the various models available. This review will provide an overview of the murine models currently used in CRC research, discussing the limitations and merits of each and their most relevant application. It is aimed at the developing researcher, acting as a guide to prompt further reading in planning a specific study.
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Dow LE, O'Rourke KP, Simon J, Tschaharganeh DF, van Es JH, Clevers H, Lowe SW. Apc Restoration Promotes Cellular Differentiation and Reestablishes Crypt Homeostasis in Colorectal Cancer. Cell 2015; 161:1539-1552. [PMID: 26091037 DOI: 10.1016/j.cell.2015.05.033] [Citation(s) in RCA: 379] [Impact Index Per Article: 42.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 03/27/2015] [Accepted: 04/10/2015] [Indexed: 12/15/2022]
Abstract
The adenomatous polyposis coli (APC) tumor suppressor is mutated in the vast majority of human colorectal cancers (CRC) and leads to deregulated Wnt signaling. To determine whether Apc disruption is required for tumor maintenance, we developed a mouse model of CRC whereby Apc can be conditionally suppressed using a doxycycline-regulated shRNA. Apc suppression produces adenomas in both the small intestine and colon that, in the presence of Kras and p53 mutations, can progress to invasive carcinoma. In established tumors, Apc restoration drives rapid and widespread tumor-cell differentiation and sustained regression without relapse. Tumor regression is accompanied by the re-establishment of normal crypt-villus homeostasis, such that once aberrantly proliferating cells reacquire self-renewal and multi-lineage differentiation capability. Our study reveals that CRC cells can revert to functioning normal cells given appropriate signals and provide compelling in vivo validation of the Wnt pathway as a therapeutic target for treatment of CRC.
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Affiliation(s)
- Lukas E Dow
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Kevin P O'Rourke
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Weill-Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD program
| | - Janelle Simon
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Darjus F Tschaharganeh
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Johan H van Es
- Hubrecht Institute for Developmental Biology and Stem Cell Research and University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Hans Clevers
- Hubrecht Institute for Developmental Biology and Stem Cell Research and University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Scott W Lowe
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
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Dingemanse C, Belzer C, van Hijum SAFT, Günthel M, Salvatori D, den Dunnen JT, Kuijper EJ, Devilee P, de Vos WM, van Ommen GB, Robanus-Maandag EC. Akkermansia muciniphila and Helicobacter typhlonius modulate intestinal tumor development in mice. Carcinogenesis 2015; 36:1388-96. [PMID: 26320104 DOI: 10.1093/carcin/bgv120] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 08/13/2015] [Indexed: 12/17/2022] Open
Abstract
Gastrointestinal tumor growth is thought to be promoted by gastrointestinal bacteria and their inflammatory products. We observed that intestine-specific conditional Apc mutant mice (FabplCre;Apc (15lox/+)) developed many more colorectal tumors under conventional than under pathogen-low housing conditions. Shotgun metagenomic sequencing plus quantitative PCR analysis of feces DNA revealed the presence of two bacterial species in conventional mice, absent from pathogen-low mice. One, Helicobacter typhlonius, has not been associated with cancer in man, nor in immune-competent mice. The other species, mucin-degrading Akkermansia muciniphila, is abundantly present in healthy humans, but reduced in patients with inflammatory gastrointestinal diseases and in obese and type 2 diabetic mice. Eradication of H.typhlonius in young conventional mice by antibiotics decreased the number of intestinal tumors. Additional presence of A.muciniphila prior to the antibiotic treatment reduced the tumor number even further. Colonization of pathogen-low FabplCre;Apc (15lox/+) mice with H.typhlonius or A.muciniphila increased the number of intestinal tumors, the thickness of the intestinal mucus layer and A.muciniphila colonization without H.typhlonius increased the density of mucin-producing goblet cells. However, dual colonization with H.typhlonius and A.muciniphila significantly reduced the number of intestinal tumors, the mucus layer thickness and goblet cell density to that of control mice. By global microbiota composition analysis, we found a positive association of A.muciniphila, and of H.typhlonius, and a negative association of unclassified Clostridiales with increased tumor burden. We conclude that A.muciniphila and H.typhlonius can modulate gut microbiota composition and intestinal tumor development in mice.
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Affiliation(s)
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University 6703 HB, Wageningen, The Netherlands
| | - Sacha A F T van Hijum
- Centre for Molecular and Biomolecular Informatics Bacterial Genomics, Radboud University Medical Centre 6525 GA, Nijmegen, The Netherlands, NIZO Food Research BV 6718 ZB, Ede, The Netherlands
| | | | | | | | - Ed J Kuijper
- Department of Medical Microbiology, Leiden University Medical Center 2300 RC, Leiden, The Netherlands and
| | | | - Willem M de Vos
- Laboratory of Microbiology, Wageningen University 6703 HB, Wageningen, The Netherlands, Department of Veterinary Biosciences, University of Helsinki 00014, Helsinki, Finland
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Golovko D, Kedrin D, Yilmaz ÖH, Roper J. Colorectal cancer models for novel drug discovery. Expert Opin Drug Discov 2015; 10:1217-29. [PMID: 26295972 DOI: 10.1517/17460441.2015.1079618] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Despite increased screening rates and advances in targeted therapy, colorectal cancer (CRC) remains the third leading cause of cancer-related mortality. CRC models that recapitulate key features of human disease are essential to the development of novel and effective therapeutics. Classic methods of modeling CRC such as human cell lines and xenograft mice, while useful for many applications, carry significant limitations. Recently developed in vitro and in vivo models overcome some of these deficiencies and thus can be utilized to better model CRC for mechanistic and translational research. AREAS COVERED The authors review established models of in vitro cell culture and describe advances in organoid culture for studying normal and malignant intestine. They also discuss key features of classic xenograft models and describe other approaches for in vivo CRC research, including patient-derived xenograft, carcinogen-induced, orthotopic transplantation and transgenic mouse models. We also describe mouse models of metastatic CRC. EXPERT OPINION No single model is optimal for drug discovery in CRC. Genetically engineered models overcome many limitations of xenograft models. Three-dimensional organoids can be efficiently derived from both normal and malignant tissue for large-scale in vitro and in vivo (transplantation) studies and are thus a significant advance in CRC drug discovery.
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Affiliation(s)
- Daniel Golovko
- a 1 Tufts Medical Center, Division of Gastroenterology and Molecular Oncology Research Institute , Boston, MA 02111, USA
| | - Dmitriy Kedrin
- b 2 MIT, The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology , Cambridge, MA 02139, USA.,c 3 Massachusetts General Hospital and Harvard Medical School, Division of Gastroenterology , Boston, MA 02114, USA
| | - Ömer H Yilmaz
- b 2 MIT, The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology , Cambridge, MA 02139, USA.,d 4 Massachusetts General Hospital and Harvard Medical School, Department of Pathology , Boston, MA 02114, USA
| | - Jatin Roper
- a 1 Tufts Medical Center, Division of Gastroenterology and Molecular Oncology Research Institute , Boston, MA 02111, USA .,b 2 MIT, The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology , Cambridge, MA 02139, USA
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35
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McIntyre RE, Buczacki SJ, Arends MJ, Adams DJ. Mouse models of colorectal cancer as preclinical models. Bioessays 2015; 37:909-20. [PMID: 26115037 PMCID: PMC4755199 DOI: 10.1002/bies.201500032] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/04/2015] [Accepted: 06/05/2015] [Indexed: 12/15/2022]
Abstract
In this review, we discuss the application of mouse models to the identification and pre-clinical validation of novel therapeutic targets in colorectal cancer, and to the search for early disease biomarkers. Large-scale genomic, transcriptomic and epigenomic profiling of colorectal carcinomas has led to the identification of many candidate genes whose direct contribution to tumourigenesis is yet to be defined; we discuss the utility of cross-species comparative 'omics-based approaches to this problem. We highlight recent progress in modelling late-stage disease using mice, and discuss ways in which mouse models could better recapitulate the complexity of human cancers to tackle the problem of therapeutic resistance and recurrence after surgical resection.
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Affiliation(s)
- Rebecca E. McIntyre
- Experimental Cancer GeneticsWellcome Trust Sanger InstituteHinxtonCambridgeUK
| | | | - Mark J. Arends
- Edinburgh Cancer Research UK CentreUniversity of EdinburghEdinburghUK
| | - David J. Adams
- Experimental Cancer GeneticsWellcome Trust Sanger InstituteHinxtonCambridgeUK
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Huisman SA, Bijman-Lagcher W, IJzermans JNM, Smits R, de Bruin RWF. Fasting protects against the side effects of irinotecan but preserves its anti-tumor effect in Apc15lox mutant mice. Cell Cycle 2015; 14:2333-9. [PMID: 25955194 DOI: 10.1080/15384101.2015.1044170] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Irinotecan is a widely used topoisomerase-I-inhibitor with a very narrow therapeutic window because of its severe toxicity. In the current study we have examined the effects of fasting prior to irinotecan treatment on toxicity and anti-tumor activity. FabplCre;Apc(15lox/+) mice, which spontaneously develop intestinal tumors, of 27 weeks of age were randomized into 3-day fasted and ad libitum fed groups, followed by treatment with a flat-fixed high dose of irinotecan or vehicle. Side-effects were recorded until 11 days after the start of the experiment. Tumor size, and markers for cell-cycle activity, proliferation, angiogenesis, and senescence were measured. Fasted mice were protected against the side-effects of irinotecan treatment. Ad libitum fed mice developed visible signs of discomfort including weight loss, lower activity, ruffled coat, hunched-back posture, diarrhea, and leukopenia. Irinotecan reduced tumor size in fasted and ad libitum fed groups similarly compared to untreated controls (2.4 ± 0.67 mm and 2.4 ± 0.82 mm versus 3.0 ± 1.05 mm and 2.8 ± 1.08 mm respectively, P < 0.001). Immunohistochemical analysis showed reduced proliferation, a reduced number of vascular endothelial cells, and increased levels of senescence in tumors of both irinotecan treated groups. In conclusion, 3 days of fasting protects against the toxic side-effects of irinotecan in a clinically relevant mouse model of spontaneously developing colorectal cancer without affecting its anti-tumor activity. These results support fasting as a powerful way to improve treatment of colorectal carcinoma patients.
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Affiliation(s)
- Sander A Huisman
- a Department of Surgery ; Erasmus University Medical Center ; Rotterdam , the Netherlands
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37
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Büller NVJA, Rosekrans SL, Metcalfe C, Heijmans J, van Dop WA, Fessler E, Jansen M, Ahn C, Vermeulen JLM, Westendorp BF, Robanus-Maandag EC, Offerhaus GJ, Medema JP, D'Haens GRAM, Wildenberg ME, de Sauvage FJ, Muncan V, van den Brink GR. Stromal Indian hedgehog signaling is required for intestinal adenoma formation in mice. Gastroenterology 2015; 148:170-180.e6. [PMID: 25307863 DOI: 10.1053/j.gastro.2014.10.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 09/12/2014] [Accepted: 10/02/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Indian hedgehog (IHH) is an epithelial-derived signal in the intestinal stroma, inducing factors that restrict epithelial proliferation and suppress activation of the immune system. In addition to these rapid effects of IHH signaling, IHH is required to maintain a stromal phenotype in which myofibroblasts and smooth muscle cells predominate. We investigated the role of IHH signaling during development of intestinal neoplasia in mice. METHODS Glioma-associated oncogene (Gli1)-CreERT2 and Patched (Ptch)-lacZ reporter mice were crossed with Apc(Min) mice to generate Gli1CreERT2-Rosa26-ZSGreen-Apc(Min) and Ptch-lacZ-Apc(Min) mice, which were used to identify hedgehog-responsive cells. Cyp1a1Cre-Apc (Apc(HET)) mice, which develop adenomas after administration of β-naphthoflavone, were crossed with mice with conditional disruption of Ihh in the small intestine epithelium. Apc(Min) mice were crossed with mice in which sonic hedgehog (SHH) was overexpressed specifically in the intestinal epithelium. Intestinal tissues were collected and analyzed histologically and by immunohistochemistry and quantitative reverse-transcription polymerase chain reaction. We also analyzed levels of IHH messenger RNA and expression of IHH gene targets in intestinal tissues from patients with familial adenomatous polyposis (n = 18) or sessile serrated adenomas (n = 15) and normal colonic tissue from control patients (n = 12). RESULTS Expression of IHH messenger RNA and its targets were increased in intestinal adenomas from patients and mice compared with control colon tissues. In mice, IHH signaling was exclusively paracrine, from the epithelium to the stroma. Loss of IHH from Apc(HET) mice almost completely blocked adenoma development, and overexpression of SHH increased the number and size of adenomas that developed. Loss of IHH from Apc(HET) mice changed the composition of the adenoma stroma; cells that expressed α-smooth muscle actin or desmin were lost, along with expression of cyclooxygenase-2, and the number of vimentin-positive cells increased. CONCLUSIONS Apc mutant epithelial cells secrete IHH to maintain an intestinal stromal phenotype that is required for adenoma development in mice.
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Affiliation(s)
- Nikè V J A Büller
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Sanne L Rosekrans
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Ciara Metcalfe
- Molecular Oncology Department, Genentech, South San Francisco, California
| | - Jarom Heijmans
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Willemijn A van Dop
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Evelyn Fessler
- Laboratory for Experimental Oncology and Radiobiology (LEXOR), Center for Experimental and Molecular Medicine, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - Marnix Jansen
- Barts Cancer Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Christina Ahn
- Molecular Oncology Department, Genentech, South San Francisco, California
| | - Jacqueline L M Vermeulen
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - B Florien Westendorp
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Els C Robanus-Maandag
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - G Johan Offerhaus
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jan Paul Medema
- Laboratory for Experimental Oncology and Radiobiology (LEXOR), Center for Experimental and Molecular Medicine, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - Geert R A M D'Haens
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Manon E Wildenberg
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | | | - Vanesa Muncan
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Gijs R van den Brink
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands.
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Rebel H, der Spek CDV, Salvatori D, van Leeuwen JPTM, Robanus-Maandag EC, de Gruijl FR. UV exposure inhibits intestinal tumor growth and progression to malignancy in intestine-specific Apc mutant mice kept on low vitamin D diet. Int J Cancer 2014; 136:271-7. [PMID: 24890436 DOI: 10.1002/ijc.29002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 05/12/2014] [Indexed: 12/31/2022]
Abstract
Mortality from colorectal cancer increases with latitude and decreases with ambient UV radiation. We investigated whether moderate UV dosages could inhibit intestinal tumor development and whether this corresponded with UV-induced vitamin D. FabplCre;Apc(15lox/+) mice, which develop intestinal tumors, and their parents were put on a vitamin D-deficient diet. Next to a control group, one group was vitamin D supplemented and another one group was daily UV irradiated from 6 weeks of age. Vitamin D statuses after 6 weeks of treatment were markedly increased: mean ± SD from 7.7 ± 1.9 in controls to 75 ± 15 nmol/l with vitamin D supplementation (no gender difference), and to 31 ± 13 nmol/l in males and 85 ± 17 nmol/l in females upon UV irradiation. The tumor load (area covered by tumors) at 7.5 months of age was significantly reduced in both the vitamin D-supplemented group (130 ± 25 mm(2), p = 0.018) and the UV-exposed group (88 ± 9 mm(2), p < 0.0005; no gender differences) compared to the control group (202 ± 23 mm(2)). No reductions in tumor numbers were found. Only UV exposure appeared to reduce progression to malignancy (p = 0.014). Our experiments clearly demonstrate for the first time an inhibitory effect of moderate UV exposure on outgrowth and malignant progression of primary intestinal tumors, which at least in part can be attributed to vitamin D.
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Affiliation(s)
- Heggert Rebel
- Department of Dermatology, Leiden University Medical Center, 2333, ZC Leiden, The Netherlands
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A mouse model for endometrioid ovarian cancer arising from the distal oviduct. Int J Cancer 2014; 135:1028-37. [DOI: 10.1002/ijc.28746] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 12/23/2013] [Indexed: 02/02/2023]
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40
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Fancy SPJ, Harrington EP, Baranzini SE, Silbereis JC, Shiow LR, Yuen TJ, Huang EJ, Lomvardas S, Rowitch DH. Parallel states of pathological Wnt signaling in neonatal brain injury and colon cancer. Nat Neurosci 2014; 17:506-12. [PMID: 24609463 PMCID: PMC3975168 DOI: 10.1038/nn.3676] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 02/13/2014] [Indexed: 02/07/2023]
Abstract
In colon cancer, mutation of the Wnt repressor Adenomatous polyposis coli (APC) leads to a state of aberrant and unrestricted “high-activity” signaling. However, relevance of high Wnt tone in non-genetic human disease is unknown. Here we demonstrate that distinct Wnt activity functional states determine oligodendrocyte precursor (OPC) differentiation and myelination. Murine OPCs with genetic Wnt dysregulation (high tone) express multiple genes in common with colon cancer including Lef1, SP5, Ets2, Rnf43 and Dusp4. Surprisingly, we find that OPCs in lesions of hypoxic human neonatal white matter injury upregulate markers of high Wnt activity and lack expression of APC. Finally, we show lack of Wnt repressor tone promotes permanent white matter injury after mild hypoxic insult. These findings suggest a state of pathological high-activity Wnt signaling in human disease tissues that lack pre-disposing genetic mutation.
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Affiliation(s)
- Stephen P J Fancy
- 1] Department of Pediatrics, University of California, San Francisco (UCSF), San Francisco, California, USA. [2] Department of Neurology, UCSF, San Francisco, California, USA. [3] Eli and Edythe Broad Institute for Stem Cell Research and Regeneration Medicine and Howard Hughes Medical Institute, UCSF, San Francisco, California, USA. [4]
| | - Emily P Harrington
- 1] Department of Pediatrics, University of California, San Francisco (UCSF), San Francisco, California, USA. [2] Eli and Edythe Broad Institute for Stem Cell Research and Regeneration Medicine and Howard Hughes Medical Institute, UCSF, San Francisco, California, USA. [3] Medical Scientist Training Program, UCSF, San Francisco, California, USA. [4]
| | | | - John C Silbereis
- 1] Department of Pediatrics, University of California, San Francisco (UCSF), San Francisco, California, USA. [2] Eli and Edythe Broad Institute for Stem Cell Research and Regeneration Medicine and Howard Hughes Medical Institute, UCSF, San Francisco, California, USA
| | - Lawrence R Shiow
- 1] Department of Pediatrics, University of California, San Francisco (UCSF), San Francisco, California, USA. [2] Eli and Edythe Broad Institute for Stem Cell Research and Regeneration Medicine and Howard Hughes Medical Institute, UCSF, San Francisco, California, USA
| | - Tracy J Yuen
- 1] Department of Pediatrics, University of California, San Francisco (UCSF), San Francisco, California, USA. [2] Eli and Edythe Broad Institute for Stem Cell Research and Regeneration Medicine and Howard Hughes Medical Institute, UCSF, San Francisco, California, USA
| | - Eric J Huang
- Department of Pathology, UCSF, San Francisco, California, USA
| | | | - David H Rowitch
- 1] Department of Pediatrics, University of California, San Francisco (UCSF), San Francisco, California, USA. [2] Eli and Edythe Broad Institute for Stem Cell Research and Regeneration Medicine and Howard Hughes Medical Institute, UCSF, San Francisco, California, USA
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Abstract
Colorectal cancer is a heterogeneous disease that afflicts a large number of people in the USA. The use of animal models has the potential to increase our understanding of carcinogenesis, tumor biology, and the impact of specific molecular events on colon biology. In addition, animal models with features of specific human colorectal cancers can be used to test strategies for cancer prevention and treatment. In this review, we provide an overview of the mechanisms driving human cancer, we discuss the approaches one can take to model colon cancer in animals, and we describe a number of specific animal models that have been developed for the study of colon cancer. We believe that there are many valuable animal models to study various aspects of human colorectal cancer. However, opportunities for improving upon these models exist.
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Yang T, Owen JL, Lightfoot YL, Kladde MP, Mohamadzadeh M. Microbiota impact on the epigenetic regulation of colorectal cancer. Trends Mol Med 2013; 19:714-25. [PMID: 24051204 DOI: 10.1016/j.molmed.2013.08.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 08/02/2013] [Accepted: 08/22/2013] [Indexed: 12/12/2022]
Abstract
Mechanisms of colorectal cancer (CRC) development can be generally divided into three categories: genetic, epigenetic, and aberrant immunologic signaling pathways, all of which may be triggered by an imbalanced intestinal microbiota. Aberrant gut microbial composition, termed 'dysbiosis', has been reported in inflammatory bowel disease patients who are at increased risk for CRC development. Recent studies indicate that it is feasible to rescue experimental models of colonic cancer by oral treatment with genetically engineered beneficial bacteria and/or their immune-regulating gene products. Here, we review the mechanisms of epigenetic modulation implicated in the development and progression of CRC, which may be the result of dysbiosis, and therefore may be amenable to therapeutic intervention.
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Affiliation(s)
- Tao Yang
- Department of Infectious Diseases and Pathology, University of Florida, Gainesville, FL 32608 USA; Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Florida, Gainesville, FL 32610 USA
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Toki H, Inoue M, Motegi H, Minowa O, Kanda H, Yamamoto N, Ikeda A, Karashima Y, Matsui J, Kaneda H, Miura I, Suzuki T, Wakana S, Masuya H, Gondo Y, Shiroishi T, Akiyama T, Yao R, Noda T. Novel mouse model for Gardner syndrome generated by a large-scale N-ethyl-N-nitrosourea mutagenesis program. Cancer Sci 2013; 104:937-44. [PMID: 23551873 DOI: 10.1111/cas.12161] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Revised: 03/21/2013] [Accepted: 03/27/2013] [Indexed: 12/26/2022] Open
Abstract
Mutant mouse models are indispensable tools for clarifying the functions of genes and elucidating the underlying pathogenic mechanisms of human diseases. We carried out large-scale mutagenesis using the chemical mutagen N-ethyl-N-nitrosourea. One specific aim of our mutagenesis project was to generate novel cancer models. We screened 7012 animals for dominant traits using a necropsy test and thereby established 17 mutant lines predisposed to cancer. Here, we report on a novel cancer model line that developed osteoma, trichogenic tumor, and breast cancer. Using fine mapping and genomic sequencing, we identified a point mutation in the adenomatous polyposis coli (Apc) gene. The Apc1576 mutants bear a nonsense mutation at codon 1576 in the Apc gene. Although most Apc mutant mice established thus far have multifocal intestinal tumors, mice that are heterozygous for the Apc1576 mutation do not develop intestinal tumors; instead, they develop multifocal breast cancers and trichogenic tumors. Notably, the osteomas that develop in the Apc1576 mutant mice recapitulate the lesion observed in Gardner syndrome, a clinical variant of familial adenomatous polyposis. Our Apc1576 mutant mice will be valuable not only for understanding the function of the Apc gene in detail but also as models of human Gardner syndrome.
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Affiliation(s)
- Hideaki Toki
- Team for Advanced Development and Evaluation of Human Disease Models, Riken BioResource Center, Tsukuba, Japan
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Abstract
Adenomatous polyposis coli (APC) is best known for its crucial role in colorectal cancer suppression. Rodent models with various Apc mutations have enabled experimental validation of different Apc functions in tumors and normal tissues. Since the development of the first mouse model with a germline Apc mutation in the early 1990s, 20 other Apc mouse and rat models have been generated. This article compares and contrasts currently available Apc rodent models with particular emphasis on providing potential explanations for their reported variation in three areas: (i) intestinal polyp multiplicity, (ii) intestinal polyp distribution, and (iii) extraintestinal phenotypes.
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Affiliation(s)
- Maged Zeineldin
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Ave. Lawrence, KS 66045 USA
| | - Kristi L. Neufeld
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Ave. Lawrence, KS 66045 USA
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van der Zee M, Jia Y, Wang Y, Heijmans-Antonissen C, Ewing PC, Franken P, DeMayo FJ, Lydon JP, Burger CW, Fodde R, Blok LJ. Alterations in Wnt-β
-catenin and Pten signalling play distinct roles in endometrial cancer initiation and progression. J Pathol 2013; 230:48-58. [DOI: 10.1002/path.4160] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 11/29/2012] [Accepted: 12/21/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Marten van der Zee
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Yundan Jia
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Yongyi Wang
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | | | - Patricia C Ewing
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Patrick Franken
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Francesco J DeMayo
- Department of Molecular and Cellular Biology; Baylor College of Medicine; Houston TX USA
| | - John P Lydon
- Department of Molecular and Cellular Biology; Baylor College of Medicine; Houston TX USA
| | - Curt W Burger
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Riccardo Fodde
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Leen J Blok
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
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Zeineldin M, Neufeld KL. More than two decades of Apc modeling in rodents. Biochim Biophys Acta Rev Cancer 2013; 1836:80-9. [PMID: 23333833 DOI: 10.1016/j.bbcan.2013.01.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/31/2012] [Accepted: 01/03/2013] [Indexed: 02/07/2023]
Abstract
Mutation of tumor suppressor gene adenomatous polyposis coli (APC) is an initiating step in most colon cancers. This review summarizes Apc models in mice and rats, with particular concentration on those most recently developed, phenotypic variation among different models, and genotype/phenotype correlations.
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Affiliation(s)
- Maged Zeineldin
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Ave., Lawrence, KS 66045, USA
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47
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Roper J, Hung KE. Priceless GEMMs: genetically engineered mouse models for colorectal cancer drug development. Trends Pharmacol Sci 2012; 33:449-55. [DOI: 10.1016/j.tips.2012.05.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 04/11/2012] [Accepted: 05/02/2012] [Indexed: 12/13/2022]
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48
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Canonical wnt signaling regulates hematopoiesis in a dosage-dependent fashion. Cell Stem Cell 2012; 9:345-56. [PMID: 21982234 DOI: 10.1016/j.stem.2011.07.017] [Citation(s) in RCA: 246] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 06/06/2011] [Accepted: 07/29/2011] [Indexed: 02/04/2023]
Abstract
Canonical Wnt signaling has been implicated in the regulation of hematopoiesis. By employing a Wnt-reporter mouse, we observed that Wnt signaling is differentially activated during hematopoiesis, suggesting an important regulatory role for specific Wnt signaling levels. To investigate whether canonical Wnt signaling regulates hematopoiesis in a dosage-dependent fashion, we analyzed the effect of different mutations in the Adenomatous polyposis coli gene (Apc), a negative modulator of the canonical Wnt pathway. By combining different targeted hypomorphic alleles and a conditional deletion allele of Apc, a gradient of five different Wnt signaling levels was obtained in vivo. We here show that different, lineage-specific Wnt dosages regulate hematopoietic stem cells (HSCs), myeloid precursors, and T lymphoid precursors during hematopoiesis. Differential, lineage-specific optimal Wnt dosages provide a unifying concept that explains the differences reported among inducible gain-of-function approaches, leading to either HSC expansion or depletion of the HSC pool.
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Fijneman RJA, de Wit M, Pourghiasian M, Piersma SR, Pham TV, Warmoes MO, Lavaei M, Piso C, Smit F, Delis-van Diemen PM, van Turenhout ST, Terhaar sive Droste JS, Mulder CJJ, Blankenstein MA, Robanus-Maandag EC, Smits R, Fodde R, van Hinsbergh VWM, Meijer GA, Jimenez CR. Proximal fluid proteome profiling of mouse colon tumors reveals biomarkers for early diagnosis of human colorectal cancer. Clin Cancer Res 2012; 18:2613-24. [PMID: 22351690 DOI: 10.1158/1078-0432.ccr-11-1937] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Early detection of colorectal cancer (CRC) and its precursor lesions is an effective approach to reduce CRC mortality rates. This study aimed to identify novel protein biomarkers for the early diagnosis of CRC. EXPERIMENTAL DESIGN Proximal fluids are a rich source of candidate biomarkers as they contain high concentrations of tissue-derived proteins. The FabplCre;Apc(15lox/+) mouse model represents early-stage development of human sporadic CRC. Proximal fluids were collected from normal colon and colon tumors and subjected to in-depth proteome profiling by tandem mass spectrometry. Carcinoembryonic antigen (CEA) and CHI3L1 human serum protein levels were determined by ELISA. RESULTS Of the 2,172 proteins identified, quantitative comparison revealed 192 proteins that were significantly (P < 0.05) and abundantly (>5-fold) more excreted by tumors than by controls. Further selection for biomarkers with highest specificity and sensitivity yielded 52 candidates, including S100A9, MCM4, and four other proteins that have been proposed as candidate biomarkers for human CRC screening or surveillance, supporting the validity of our approach. For CHI3L1, we verified that protein levels were significantly increased in sera from patients with adenomas and advanced adenomas compared with control individuals, in contrast to the CRC biomarker CEA. CONCLUSION These data show that proximal fluid proteome profiling with a mouse tumor model is a powerful approach to identify candidate biomarkers for early diagnosis of human cancer, exemplified by increased CHI3L1 protein levels in sera from patients with CRC precursor lesions.
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Affiliation(s)
- Remond J A Fijneman
- Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands.
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Albuquerque C, Bakker ERM, van Veelen W, Smits R. Colorectal cancers choosing sides. Biochim Biophys Acta Rev Cancer 2011; 1816:219-31. [PMID: 21855610 DOI: 10.1016/j.bbcan.2011.07.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 07/25/2011] [Accepted: 07/28/2011] [Indexed: 12/15/2022]
Abstract
In contrast to the majority of sporadic colorectal cancer which predominantly occur in the distal colon, most mismatch repair deficient tumours arise at the proximal side. At present, these regional preferences have not been explained properly. Recently, we have screened colorectal tumours for mutations in Wnt-related genes focusing specifically on colorectal location. Combining this analysis with published data, we propose a mechanism underlying the side-related preferences of colorectal cancers, based on the specific acquired genetic defects in β-catenin signalling.
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Affiliation(s)
- Cristina Albuquerque
- Centro de Investigação de Patobiologia Molecular CIPM, Instituto Português de Oncologia de Lisboa Francisco Gentil, Rua Prof. Lima Basto 1099-023 Lisboa, Portugal
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