1
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Martínez-Aracil A. [Quantification of CDX2 using H-Score and its prognostic value in colon cancer]. REVISTA ESPANOLA DE PATOLOGIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE ANATOMIA PATOLOGICA Y DE LA SOCIEDAD ESPANOLA DE CITOLOGIA 2024; 57:288-294. [PMID: 39393897 DOI: 10.1016/j.patol.2024.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/06/2024] [Accepted: 06/19/2024] [Indexed: 10/13/2024]
Abstract
Colorectal cancer is the third tumor with the highest incidence in the world population and is the second cause of death according to the Globocan study. CDX2 has been acquiring an important role as a sensitive and specific marker in the diagnosis of colorectal cancer. However, the lack of inclusion of this marker in the pathology guidelines together with the lack of existing studies prevent its daily use. Although multiple studies relate the absence of staining to a worse prognosis, the literature does not define how intense the staining must be to be considered positive or negative. In the present study, the H-Score is described as a method to determine the positivity of CDX2 staining, using free access software called QuPath with a sample of 169 patients. Furthermore, it is suggested that those patients whose tumors had an H-Score for CDX2 less than or equal to 152 points had a significantly shorter recurrence-free interval time compared to those with an H-Score greater than this threshold. For this reason, this study aims to highlight the importance of quantification using digital pathology, as it could be applied in daily practice, and suggests a reference value for CDX2 from which the tumor prognosis may differ.
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Affiliation(s)
- Adriano Martínez-Aracil
- Servicio de Anatomía Patológica, Bioaraba Research Health Institute, Hospital Universitario de Álava, Vitoria-Gasteiz, Álava, España.
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2
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Lorzadeh A, Ye G, Sharma S, Jadhav U. DNA methylation-dependent and -independent binding of CDX2 directs activation of distinct developmental and homeostatic genes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.11.579850. [PMID: 38405700 PMCID: PMC10888781 DOI: 10.1101/2024.02.11.579850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Precise spatiotemporal and cell type-specific gene expression is essential for proper tissue development and function. Transcription factors (TFs) guide this process by binding to developmental stage-specific targets and establishing an appropriate enhancer landscape. In turn, DNA and chromatin modifications direct the genomic binding of TFs. However, how TFs navigate various chromatin features and selectively bind a small portion of the millions of possible genomic target loci is still not well understood. Here we show that Cdx2 - a pioneer TF that binds distinct targets in developing versus adult intestinal epithelial cells - has a preferential affinity for a non-canonical CpG-containing motif in vivo. A higher frequency of this motif at embryonic and fetal Cdx2 target loci and the specifically methylated state of the CpG during development allows selective Cdx2 binding and activation of developmental enhancers and linked genes. Conversely, demethylation at these enhancers prohibits ectopic Cdx2 binding in adult cells, where Cdx2 binds its canonical motif without a CpG. This differential Cdx2 binding allows for corecruitment of Ctcf and Hnf4, facilitating the establishment of intestinal superenhancers during development and enhancers mediating adult homeostatic functions, respectively. Induced gain of DNA methylation in the adult mouse epithelium or cultured cells causes ectopic recruitment of Cdx2 to the developmental target loci and facilitates cobinding of the partner TFs. Together, our results demonstrate that the differential CpG motif requirements for Cdx2 binding to developmental versus adult target sites allow it to navigate different DNA methylation profiles and activate cell type-specific genes at appropriate times.
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Affiliation(s)
- Alireza Lorzadeh
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USC
| | - George Ye
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USC
| | - Sweta Sharma
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USC
| | - Unmesh Jadhav
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USC
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USC
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3
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Pope HF, Pilmane M, Junga A, Pētersons A. The Assessment of CDX1, IHH, SHH, GATA4, FOXA2, FOXF1 in Congenital Intra-Abdominal Adhesions. Acta Med Litu 2024; 31:109-121. [PMID: 38978864 PMCID: PMC11227690 DOI: 10.15388/amed.2024.31.1.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 07/10/2024] Open
Abstract
Congenital abdominal adhesions are a rare condition that can result in a small bowel obstruction at any age, more frequently in pediatric populations. The cause remains unknown, and the importance of aberrant congenital bands is related to the difficulty of diagnosis, and cases of death with late detection have been documented. This research examines the expression of Caudal Type Homeobox 1 (CDX1), Indian Hedgehog (IHH), Sonic Hedgehog (SHH), GATA Binding Protein 4 (GATA4), Forkhead Box A2 (FOXA2) and Forkhead Box F1 (FOXF1) gene expression in human abdominal congenital adhesion fibroblast and endothelium cells by chromogenic in situ hybridization, with the aim of elucidating their potential association with the etiology of congenital intra-abdominal adhesion band development. The potential genes' signals were examined using a semi-quantitative approach. Significant correlations were observed between the expression of CDX1 (p <.001) and SHH (p=0.032) genes in fibroblasts from congenital intra-abdominal adhesions compared to fibroblasts from control peritoneal tissue. Statistically significant very strong correlations were found between the CDX1 and IHH comparing endothelium and fibroblast cells in congenital abdominal adhesion bands. There was no statistically significant difference found in the distribution of IHH, FOXA2, GATA4, and FOXF1 between the fibroblasts and endothelium of the patients compared to the control group. The presence of notable distinctions and diverse associations suggests the potential involvement of numerous morpho-pathogenetic processes in the development of intraabdominal adhesions.
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Affiliation(s)
| | - Māra Pilmane
- Institute of Anatomy and Anthropology, Riga Stradiņš University, Riga, Latvia
| | - Anna Junga
- Institute of Anatomy and Anthropology, Riga Stradiņš University, Riga, Latvia
| | - Aigars Pētersons
- Children’s Clinical University Hospital, Riga Stradiņš University, Riga, Latvia
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4
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Yang L, Tu L, Bisht S, Mao Y, Petkovich D, Thursby SJ, Liang J, Patel N, Yen RWC, Largent T, Zahnow C, Brock M, Gabrielson K, Salimian KJ, Baylin SB, Easwaran H. Tissue-location-specific transcription programs drive tumor dependencies in colon cancer. Nat Commun 2024; 15:1384. [PMID: 38360902 PMCID: PMC10869357 DOI: 10.1038/s41467-024-45605-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 01/30/2024] [Indexed: 02/17/2024] Open
Abstract
Cancers of the same tissue-type but in anatomically distinct locations exhibit different molecular dependencies for tumorigenesis. Proximal and distal colon cancers exemplify such characteristics, with BRAFV600E predominantly occurring in proximal colon cancers along with increased DNA methylation phenotype. Using mouse colon organoids, here we show that proximal and distal colon stem cells have distinct transcriptional programs that regulate stemness and differentiation. We identify that the homeobox transcription factor, CDX2, which is silenced by DNA methylation in proximal colon cancers, is a key mediator of the differential transcriptional programs. Cdx2-mediated proximal colon-specific transcriptional program concurrently is tumor suppressive, and Cdx2 loss sufficiently creates permissive state for BRAFV600E-driven transformation. Human proximal colon cancers with CDX2 downregulation showed similar transcriptional program as in mouse proximal organoids with Cdx2 loss. Developmental transcription factors, such as CDX2, are thus critical in maintaining tissue-location specific transcriptional programs that create tissue-type origin specific dependencies for tumor development.
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Affiliation(s)
- Lijing Yang
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, PR China
| | - Lei Tu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Shilpa Bisht
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Yiqing Mao
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Daniel Petkovich
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Sara-Jayne Thursby
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Jinxiao Liang
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Nibedita Patel
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Ray-Whay Chiu Yen
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Tina Largent
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Cynthia Zahnow
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Malcolm Brock
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Kathy Gabrielson
- Department of Comparative Medicine, Johns Hopkins Medical Institutions, 863 Broadway Research Building, 733 N. Broadway, Baltimore, MD, 21205-2196, USA
| | - Kevan J Salimian
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Stephen B Baylin
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA
| | - Hariharan Easwaran
- CRB1, Department of Oncology and The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Room 530, Baltimore, MD, 21287, USA.
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5
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Zwick RK, Kasparek P, Palikuqi B, Viragova S, Weichselbaum L, McGinnis CS, McKinley KL, Rathnayake A, Vaka D, Nguyen V, Trentesaux C, Reyes E, Gupta AR, Gartner ZJ, Locksley RM, Gardner JM, Itzkovitz S, Boffelli D, Klein OD. Epithelial zonation along the mouse and human small intestine defines five discrete metabolic domains. Nat Cell Biol 2024; 26:250-262. [PMID: 38321203 DOI: 10.1038/s41556-023-01337-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 12/13/2023] [Indexed: 02/08/2024]
Abstract
A key aspect of nutrient absorption is the exquisite division of labour across the length of the small intestine, with individual nutrients taken up at different proximal:distal positions. For millennia, the small intestine was thought to comprise three segments with indefinite borders: the duodenum, jejunum and ileum. By examining the fine-scale longitudinal transcriptional patterns that span the mouse and human small intestine, we instead identified five domains of nutrient absorption that mount distinct responses to dietary changes, and three regional stem cell populations. Molecular domain identity can be detected with machine learning, which provides a systematic method to computationally identify intestinal domains in mice. We generated a predictive model of transcriptional control of domain identity and validated the roles of Ppar-δ and Cdx1 in patterning lipid metabolism-associated genes. These findings represent a foundational framework for the zonation of absorption across the mammalian small intestine.
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Affiliation(s)
- Rachel K Zwick
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Petr Kasparek
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Brisa Palikuqi
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Sara Viragova
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Laura Weichselbaum
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Christopher S McGinnis
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA
| | - Kara L McKinley
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Asoka Rathnayake
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Dedeepya Vaka
- Department of Pediatrics, Cedars-Sinai Guerin Children's, Los Angeles, CA, USA
| | - Vinh Nguyen
- Department of Surgery, University of California San Francisco, San Francisco, CA, USA
- Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA, USA
- Diabetes Center, University of California San Francisco, San Francisco, CA, USA
- UCSF CoLabs, University of California, San Francisco, San Francisco, CA, USA
| | - Coralie Trentesaux
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Efren Reyes
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Alexander R Gupta
- Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Zev J Gartner
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA, USA
- Chan Zuckerberg BioHub and Center for Cellular Construction 94158, University of California San Francisco, San Francisco, CA, USA
| | - Richard M Locksley
- Department of Medicine and Department of Microbiology & Immunology, University of California San Francisco, San Francisco, CA, USA
- Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA, USA
| | - James M Gardner
- Department of Surgery, University of California San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California San Francisco, San Francisco, CA, USA
| | - Shalev Itzkovitz
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Dario Boffelli
- Department of Pediatrics, Cedars-Sinai Guerin Children's, Los Angeles, CA, USA
| | - Ophir D Klein
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA, USA.
- Department of Pediatrics, Cedars-Sinai Guerin Children's, Los Angeles, CA, USA.
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6
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Huang Z, Wang C, Huang Q, Yan Z, Yin Z. Hungatella hathewayi impairs the sensitivity of colorectal cancer cells to 5-FU through decreasing CDX2 expression. Hum Cell 2023; 36:2055-2065. [PMID: 37477870 DOI: 10.1007/s13577-023-00938-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 06/16/2023] [Indexed: 07/22/2023]
Abstract
Hungatella hathewayi (H. hathewayi), also known as Clostridium hathewayi, has been reported to be accumulated in the colorectal cancer (CRC) samples. In addition, evidence has demonstrated that inoculation with H. hathewayi promotes the proliferation of colonic epithelial cells in mice. Herein, we explored H. hathewayi role in regulating the 5-fluorouracil (5-FU) resistance in CRC cells, and investigated the underlying mechanisms. H. hathewayi abundance in CRC tissues and the corresponding adjacent normal tissues was tested using qRT-PCR. Both parental and 5-FU resistance CRC cell lines were used to assess H. hathewayi role in regulating the 5-FU resistance of CRC cells using CCK-8, flow cytometry and animal experiments. H. hathewayi abundance was significantly increased in CRC tissues, and the high level of H. hathewayi was linked to lower overall survival rate. H. hathewayi treatment significantly weakened 5-FU effects on inhibiting cell growth and inducing cell apoptosis in CRC HCT116 and HT29 cells. In addition, H. hathewayi enhanced the 5-FU resistance of HCT116/5-FU and HT29/5-FU cells (the 5-FU resistance cell lines). In mechanism, H. hathewayi decreased the expression of CDX2, and increased the expression of nuclear accumulation of β-catenin. Overexpression of CDX2 abolished H. hathewayi-mediated enhancement in cell growth and inhibition in cell apoptosis in HCT116/5-FU and HT29/5-FU cells, as well as inhibited the expression and nuclear accumulation of β-catenin. In conclusion, H. hathewayi abundance was increased in CRC tissues, and the high level of H. hathewayi was linked to lower overall survival rate. In mechanisam, H. hathewayi treatment enhanced the 5-FU resistance of CRC cells through modulating CDX2/β-catenin signaling.
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Affiliation(s)
- Zhi Huang
- Department of Interventional Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550002, People's Republic of China
- School of Basic Medical Science, Guizhou Medical University, Guiyang, 550002, People's Republic of China
| | - Chuanlin Wang
- School of Clinical Medicine, Guizhou Medical University, Guiyang, China
| | - Qiujin Huang
- School of Clinical Medicine, Guizhou Medical University, Guiyang, China
| | - Zhiqiang Yan
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550002, People's Republic of China.
| | - Zhaohui Yin
- Department of Anus and Intestine Surgery, The Guizhou Maotai Hospital, Zunyi, 5190100, People's Republic of China.
- School of Clinical Medicine, Guizhou Medical University, Guiyang, China.
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7
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Zwick RK, Kasparek P, Palikuqi B, Viragova S, Weichselbaum L, McGinnis CS, McKinley KL, Rathnayake A, Vaka D, Nguyen V, Trentesaux C, Reyes E, Gupta AR, Gartner ZJ, Locksley RM, Gardner JM, Itzkovitz S, Boffelli D, Klein OD. Epithelial zonation along the mouse and human small intestine defines five discrete metabolic domains. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.20.558726. [PMID: 37790430 PMCID: PMC10542170 DOI: 10.1101/2023.09.20.558726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
A key aspect of nutrient absorption is the exquisite division of labor across the length of the small intestine, with individual classes of micronutrients taken up at different positions. For millennia, the small intestine was thought to comprise three segments with indefinite borders: the duodenum, jejunum, and ileum. By examining fine-scale longitudinal segmentation of the mouse and human small intestines, we identified transcriptional signatures and upstream regulatory factors that define five domains of nutrient absorption, distinct from the three traditional sections. Spatially restricted expression programs were most prominent in nutrient-absorbing enterocytes but initially arose in intestinal stem cells residing in three regional populations. While a core signature was maintained across mice and humans with different diets and environments, domain properties were influenced by dietary changes. We established the functions of Ppar-ẟ and Cdx1 in patterning lipid metabolism in distal domains and generated a predictive model of additional transcription factors that direct domain identity. Molecular domain identity can be detected with machine learning, representing the first systematic method to computationally identify specific intestinal regions in mice. These findings provide a foundational framework for the identity and control of longitudinal zonation of absorption along the proximal:distal small intestinal axis.
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8
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Chen JF, Wu SW, Shi ZM, Hu B. Traditional Chinese medicine for colorectal cancer treatment: potential targets and mechanisms of action. Chin Med 2023; 18:14. [PMID: 36782251 PMCID: PMC9923939 DOI: 10.1186/s13020-023-00719-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/30/2023] [Indexed: 02/15/2023] Open
Abstract
Colorectal cancer (CRC) is a disease with complex pathogenesis, it is prone to metastasis, and its development involves abnormalities in multiple signaling pathways. Surgery, chemotherapy, radiotherapy, target therapy, and immunotherapy remain the main treatments for CRC, but improvement in the overall survival rate and quality of life is urgently needed. Traditional Chinese medicine (TCM) has a long history of preventing and treating CRC. It could affect CRC cell proliferation, apoptosis, cell cycle, migration, invasion, autophagy, epithelial-mesenchymal transition, angiogenesis, and chemoresistance by regulating multiple signaling pathways, such as PI3K/Akt, NF-κB, MAPK, Wnt/β-catenin, epidermal growth factor receptors, p53, TGF-β, mTOR, Hedgehog, and immunomodulatory signaling pathways. In this paper, the main signaling pathways and potential targets of TCM and its active ingredients in the treatment of CRC were systematically summarized, providing a theoretical basis for treating CRC with TCM and new ideas for further exploring the pathogenesis of CRC and developing new anti-CRC drugs.
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Affiliation(s)
- Jin-Fang Chen
- grid.412540.60000 0001 2372 7462Institute of Traditional Chinese Medicine in Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032 Shanghai, People’s Republic of China ,grid.412540.60000 0001 2372 7462Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032 Shanghai, People’s Republic of China
| | - Shi-Wei Wu
- grid.412540.60000 0001 2372 7462Institute of Traditional Chinese Medicine in Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032 Shanghai, People’s Republic of China ,grid.412540.60000 0001 2372 7462Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032 Shanghai, People’s Republic of China
| | - Zi-Man Shi
- grid.412540.60000 0001 2372 7462Institute of Traditional Chinese Medicine in Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032 Shanghai, People’s Republic of China ,grid.412540.60000 0001 2372 7462Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032 Shanghai, People’s Republic of China
| | - Bing Hu
- Institute of Traditional Chinese Medicine in Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032, Shanghai, People's Republic of China. .,Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 200032, Shanghai, People's Republic of China.
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9
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Bara AM, Chen L, Ma C, Underwood J, Moreci RS, Sumigray K, Sun T, Diao Y, Verzi M, Lechler T. Maf family transcription factors are required for nutrient uptake in the mouse neonatal gut. Development 2022; 149:285915. [PMID: 36504079 PMCID: PMC10112929 DOI: 10.1242/dev.201251] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/07/2022] [Indexed: 12/14/2022]
Abstract
There are fundamental differences in how neonatal and adult intestines absorb nutrients. In adults, macromolecules are broken down into simpler molecular components in the lumen of the small intestine, then absorbed. In contrast, neonates are thought to rely on internalization of whole macromolecules and subsequent degradation in the lysosome. Here, we identify the Maf family transcription factors MAFB and c-MAF as markers of terminally differentiated intestinal enterocytes throughout life. The expression of these factors is regulated by HNF4α and HNF4γ, master regulators of enterocyte cell fate. Loss of Maf factors results in a neonatal-specific failure to thrive and loss of macromolecular nutrient uptake. RNA-Seq and CUT&RUN analyses defined an endo-lysosomal program as being downstream of these transcription factors. We demonstrate major transcriptional changes in metabolic pathways, including fatty acid oxidation and increases in peroxisome number, in response to loss of Maf proteins. Finally, we show that loss of BLIMP1, a repressor of adult enterocyte genes, shows highly overlapping changes in gene expression and similar defects in macromolecular uptake. This work defines transcriptional regulators that are necessary for nutrient uptake in neonatal enterocytes.
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Affiliation(s)
- Anne M Bara
- Department of Dermatology, Duke University, Durham, NC 27710, USA.,Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Lei Chen
- Department of Genetics, Rutgers University, Piscataway, NJ 08854, USA
| | - Celina Ma
- Department of Dermatology, Duke University, Durham, NC 27710, USA.,Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Julie Underwood
- Department of Dermatology, Duke University, Durham, NC 27710, USA.,Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Rebecca S Moreci
- Department of Dermatology, Duke University, Durham, NC 27710, USA.,Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Kaelyn Sumigray
- Department of Dermatology, Duke University, Durham, NC 27710, USA.,Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Tongyu Sun
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Yarui Diao
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Michael Verzi
- Department of Genetics, Rutgers University, Piscataway, NJ 08854, USA
| | - Terry Lechler
- Department of Dermatology, Duke University, Durham, NC 27710, USA.,Department of Cell Biology, Duke University, Durham, NC 27710, USA
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10
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Abstract
ABSTRACT Gastric intestinal metaplasia (GIM) is a precancerous lesion of gastric cancer (GC) and is considered an irreversible point of progression for GC. Helicobacter pylori infection can cause GIM, but its eradication still does not reverse the process. Bile reflux is also a pathogenic factor in GIM and can continuously irritate the gastric mucosa, and bile acids in refluxed fluid have been widely reported to be associated with GIM. This paper reviews in detail the relationship between bile reflux and GIM and the mechanisms by which bile acids induce GIM.
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11
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Regulatory domains controlling high intestinal vitamin D receptor gene expression are conserved in mouse and human. J Biol Chem 2022; 298:101616. [PMID: 35065959 PMCID: PMC8891975 DOI: 10.1016/j.jbc.2022.101616] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 12/14/2022] Open
Abstract
Vitamin D receptor (VDR) levels are highest in the intestine where it mediates 1,25 dihydroxyvitamin D-induced gene expression. However, the mechanisms controlling high intestinal VDR gene expression are unknown. Here, we used Assay for Transposase-Accessible Chromatin using Sequencing (ATAC-Seq) to identify the regulatory sites controlling intestine-specific Vdr gene expression in the small intestine (villi and crypts) and colon of developing, adult, and aged mice. We identified 17 ATAC peaks in a 125 kb region from intron 3 to −55.8 kb from exon 1 of the Vdr gene. Interestingly, many of these peaks were missing/reduced in the developing intestine. Chromatin ImmunoPrecipitation-Sequencing (ChIP-Seq) peaks for intestinal transcription factors (TFs) were present within the ATAC peaks and at HiChIP looping attachments that connected the ATAC/TF ChIP peaks to the transcription start site and CCCTF-binding factor sites at the borders of the Vdr gene regulatory domain. Intestine-specific regulatory sites were identified by comparing ATAC peaks to DNAse-Seq data from other tissues that revealed tissue-specific, evolutionary conserved, and species-specific peaks. Bioinformatics analysis of human DNAse-Seq peaks revealed polymorphisms that disrupt TF-binding sites. Our analysis shows that mouse intestinal Vdr gene regulation requires a complex interaction of multiple distal regulatory regions and is controlled by a combination of intestinal TFs. These intestinal regulatory sites are well conserved in humans suggesting that they may be key components of VDR regulation in both mouse and human intestines.
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12
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Gu W, Wang H, Huang X, Kraiczy J, Singh PNP, Ng C, Dagdeviren S, Houghton S, Pellon-Cardenas O, Lan Y, Nie Y, Zhang J, Banerjee KK, Onufer EJ, Warner BW, Spence J, Scherl E, Rafii S, Lee RT, Verzi MP, Redmond D, Longman R, Helin K, Shivdasani RA, Zhou Q. SATB2 preserves colon stem cell identity and mediates ileum-colon conversion via enhancer remodeling. Cell Stem Cell 2022; 29:101-115.e10. [PMID: 34582804 PMCID: PMC8741647 DOI: 10.1016/j.stem.2021.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 07/13/2021] [Accepted: 09/08/2021] [Indexed: 01/09/2023]
Abstract
Adult stem cells maintain regenerative tissue structure and function by producing tissue-specific progeny, but the factors that preserve their tissue identities are not well understood. The small and large intestines differ markedly in cell composition and function, reflecting their distinct stem cell populations. Here we show that SATB2, a colon-restricted chromatin factor, singularly preserves LGR5+ adult colonic stem cell and epithelial identity in mice and humans. Satb2 loss in adult mice leads to stable conversion of colonic stem cells into small intestine ileal-like stem cells and replacement of the colonic mucosa with one that resembles the ileum. Conversely, SATB2 confers colonic properties on the mouse ileum. Human colonic organoids also adopt ileal characteristics upon SATB2 loss. SATB2 regulates colonic identity in part by modulating enhancer binding of the intestinal transcription factors CDX2 and HNF4A. Our study uncovers a conserved core regulator of colonic stem cells able to mediate cross-tissue plasticity in mature intestines.
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Affiliation(s)
- Wei Gu
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Hua Wang
- Cell Biology Program and Center for Epigenetics Research, Memorial Sloan Kettering Cancer Center, 430 E 67th Street, New York, NY, 10065, USA
| | - Xiaofeng Huang
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Judith Kraiczy
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA, 02215, USA,Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Pratik N. P. Singh
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA, 02215, USA,Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Charles Ng
- Jill Roberts Center for Inflammatory Bowel Disease, Weill Cornell Medicine, 1283 York Avenue, New York, NY, 10065, USA
| | - Sezin Dagdeviren
- Department of Stem Cell and Regenerative Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA, 02138, USA
| | - Sean Houghton
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Oscar Pellon-Cardenas
- Department of Genetics, Rutgers University, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Ying Lan
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Yaohui Nie
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Jiaoyue Zhang
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Kushal K Banerjee
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA, 02215, USA,Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Emily J. Onufer
- Division of Pediatric Surgery, Department of Surgery, Washington University School of Medicine, 660 S Euclid Avenue, St. Louis, MO, 63110, USA
| | - Brad W. Warner
- Division of Pediatric Surgery, Department of Surgery, Washington University School of Medicine, 660 S Euclid Avenue, St. Louis, MO, 63110, USA
| | - Jason Spence
- Department of Internal Medicine, University of Michigan, 1500 E Medical Center Drive, Ann Arbor, MI, 48109, USA
| | - Ellen Scherl
- Jill Roberts Center for Inflammatory Bowel Disease, Weill Cornell Medicine, 1283 York Avenue, New York, NY, 10065, USA
| | - Shahin Rafii
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Richard T. Lee
- Department of Stem Cell and Regenerative Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA, 02138, USA
| | - Michael P. Verzi
- Department of Genetics, Rutgers University, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - David Redmond
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Randy Longman
- Jill Roberts Center for Inflammatory Bowel Disease, Weill Cornell Medicine, 1283 York Avenue, New York, NY, 10065, USA
| | - Kristian Helin
- Cell Biology Program and Center for Epigenetics Research, Memorial Sloan Kettering Cancer Center, 430 E 67th Street, New York, NY, 10065, USA,Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen N 2200 Denmark,The Novo Nordisk Foundation for Stem Cell Biology (Danstem), University of Copenhagen, Copenhagen N 2200, Denmark
| | - Ramesh A. Shivdasani
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA, 02215, USA,Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Qiao Zhou
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA,Lead Contact ()
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Foley T, Lohnes D. Cdx regulates gene expression through PRC2-mediated epigenetic mechanisms. Dev Biol 2021; 483:22-33. [PMID: 34973175 DOI: 10.1016/j.ydbio.2021.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 11/03/2022]
Abstract
The extra-embryonic yolk sac contains adjacent layers of mesoderm and visceral endoderm. The mesodermal layer serves as the first site of embryonic hematopoiesis, while the visceral endoderm provides a means of exchanging nutrients and waste until the development of the chorioallantoic placenta. While defects in chorioallantoic fusion and yolk sac hematopoiesis have been described in Cdx mutant mouse models, little is known about the gene targets and molecular mechanisms through which Cdx members regulate these processes. To this end, we used RNA-seq to examine Cdx-dependent gene expression changes in the yolk sac. We find that loss of Cdx function impacts the expression of genes involved in yolk sac hematopoiesis, as previously described, as well as novel Cdx2 target genes. In addition, we observed Cdx-dependent changes in PRC2 subunit expression accompanied by altered H3K27me3 deposition at a subset of Cdx target genes as early as E7.5 in the embryo proper. This study identifies additional Cdx target genes and provides further evidence for Cdx-dependent epigenetic regulation of gene expression in the early embryo, and that this regulation is required to maintain gene expression programs in the extra-embryonic yolk sac at later developmental stages.
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Affiliation(s)
- Tanya Foley
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada, K1H 8M5.
| | - David Lohnes
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada, K1H 8M5.
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14
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Chen K, Collins G, Wang H, Toh JWT. Pathological Features and Prognostication in Colorectal Cancer. Curr Oncol 2021; 28:5356-5383. [PMID: 34940086 PMCID: PMC8700531 DOI: 10.3390/curroncol28060447] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/01/2021] [Accepted: 12/07/2021] [Indexed: 02/06/2023] Open
Abstract
The prognostication of colorectal cancer (CRC) has traditionally relied on staging as defined by the Union for International Cancer Control (UICC) and American Joint Committee on Cancer (AJCC) TNM staging classifications. However, clinically, there appears to be differences in survival patterns independent of stage, suggesting a complex interaction of stage, pathological features, and biomarkers playing a role in guiding prognosis, risk stratification, and guiding neoadjuvant and adjuvant therapies. Histological features such as tumour budding, perineural invasion, apical lymph node involvement, lymph node yield, lymph node ratio, and molecular features such as MSI, KRAS, BRAF, and CDX2 may assist in prognostication and optimising adjuvant treatment. This study provides a comprehensive review of the pathological features and biomarkers that are important in the prognostication and treatment of CRC. We review the importance of pathological features and biomarkers that may be important in colorectal cancer based on the current evidence in the literature.
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Affiliation(s)
- Kabytto Chen
- Discipline of Surgery, Faculty of Medicine and Health, The University of Sydney, Westmead 2145, Australia; (G.C.); (H.W.)
- Division of Colorectal Surgery, Department of Surgery, Westmead Hospital, Westmead 2145, Australia
| | - Geoffrey Collins
- Discipline of Surgery, Faculty of Medicine and Health, The University of Sydney, Westmead 2145, Australia; (G.C.); (H.W.)
- Division of Colorectal Surgery, Department of Surgery, Westmead Hospital, Westmead 2145, Australia
| | - Henry Wang
- Discipline of Surgery, Faculty of Medicine and Health, The University of Sydney, Westmead 2145, Australia; (G.C.); (H.W.)
- Division of Colorectal Surgery, Department of Surgery, Westmead Hospital, Westmead 2145, Australia
| | - James Wei Tatt Toh
- Discipline of Surgery, Faculty of Medicine and Health, The University of Sydney, Westmead 2145, Australia; (G.C.); (H.W.)
- Division of Colorectal Surgery, Department of Surgery, Westmead Hospital, Westmead 2145, Australia
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15
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Fang Y, Li W, Chen X. P63 Deficiency and CDX2 Overexpression Lead to Barrett's-Like Metaplasia in Mouse Esophageal Epithelium. Dig Dis Sci 2021; 66:4263-4273. [PMID: 33469811 PMCID: PMC8286978 DOI: 10.1007/s10620-020-06756-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/01/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND The cellular origin and molecular mechanisms of Barrett's esophagus (BE) are still controversial. Trans-differentiation is a mechanism characterized by activation of the intestinal differentiation program and inactivation of the squamous differentiation program. AIMS Renal capsule grafting (RCG) was used to elucidate whether CDX2 overexpression on the basis of P63 deficiency in the esophageal epithelium may generate intestinal metaplasia. METHODS P63-/-;Villin-Cdx2 embryos were generated by crossing P63+/- mice with Villin-Cdx2 mice. E18.5 esophagus was xenografted in a renal capsule grafting (RCG) model. At 1, 2, or 4 weeks after RCG, the mouse esophagus was immunostained for a proliferation marker (BrdU), squamous transcription factors (SOX2, PAX9), squamous differentiation markers (CK5, CK4, and CK1), intestinal transcription factors (CDX1, HNF1α, HNF4α, GATA4, and GATA6), intestinal columnar epithelial cell markers (A33, CK8), goblet cell marker (MUC2, TFF3), Paneth cell markers (LYZ and SOX9), enteroendocrine cell marker (CHA), and Tuft cell marker (DCAMKL1). RESULTS The P63-/-;Villin-Cdx2 RCG esophagus was lined with proliferating PAS/AB+ cuboidal cells and formed an intestinal crypt-like structure. The goblet cell markers (TFF3 and MUC2) and intestinal transcription factors (CDX1, HNF1α, HNF4α, GATA4, and GATA6) were expressed although no typical morphology of goblet cells was observed. Other intestinal cell markers including enteroendocrine cell marker (CHA), Paneth cell markers (LYZ and Sox9), and intestinal secretory cell marker (UEA/WGA) were also expressed in the P63-/-;Villin-Cdx2 RCG esophagus. Squamous cell markers (PAX9 and SOX2) were also expressed, suggesting a transitional phenotype. CONCLUSION CDX2 overexpression on the basis of P63 deficiency in esophageal epithelial cells induces Barrett's-like metaplasia in vivo. Additional factors may be needed to drive this transitional phenotype into full-blown BE.
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Affiliation(s)
- Yu Fang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400045, China,Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George St., Durham, NC 27707. USA
| | - Wenbo Li
- Department of Gastroenterology, 960 Hospital, Clinical Teaching Hospital of JinZhou Medical University, Jinan 250031, China,Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George St., Durham, NC 27707. USA
| | - Xiaoxin Chen
- Cancer Research Program, Julius L. Chambers Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George St., Durham, NC 27707. USA
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16
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Abstract
The intestinal epithelium is a unique tissue, serving both as a barrier against pathogens and to conduct the end digestion and adsorption of nutrients. As regards the former, the intestinal epithelium contains a diverse repertoire of immune cells, including a variety of resident lymphocytes, macrophages and dendritic cells. These cells serve a number of roles including mitigation of infection and to stimulate regeneration in response to damage. The transcription factor Cdx2, and to a lesser extent Cdx1, plays essential roles in intestinal homeostasis, and acts as a context-dependent tumour suppressor in colorectal cancer. Deletion of Cdx2 from the murine intestinal epithelium leads to macrophage infiltration resulting in a chronic inflammatory response. However the mechanisms by which Cdx2 loss evokes this response are poorly understood. To better understand this relationship, we used a conditional mouse model lacking all intestinal Cdx function to identify potential target genes which may contribute to this inflammatory phenotype. One such candidate encodes the histocompatability complex protein H2-T3, which functions to regulate intestinal iCD8α lymphocyte activity. We found that Cdx2 occupies the H3-T3 promoter in vivo and directly regulates its expression via a Cdx response element. Loss of Cdx function leads to a rapid and pronounced attenuation of H2-T3, followed by a decrease in iCD8α cell number, an increase in macrophage infiltration and activation of pro-inflammatory cascades. These findings suggest a previously unrecognized role for Cdx in intestinal homeostasis through H2-T3-dependent regulation of iCD8α cells.
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17
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Korphaisarn K, Sukhokanjanachusak K, Pongpaibul A, Chinswangwatanakul V, Akewanlop C. Loss of CDX-2 expression is an independent poor prognostic biomarker in patients with early-stage deficient mismatch repair colorectal cancer. Asia Pac J Clin Oncol 2021; 18:249-258. [PMID: 34161647 DOI: 10.1111/ajco.13612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/10/2021] [Indexed: 12/20/2022]
Abstract
AIM To investigate the clinicopathological factors, molecular features, and prognostic implications associated with loss of Caudal-related homeobox transcription factor 2 (CDX-2) expression in colorectal cancer (CRC) patients. METHODS Immunohistochemistry for CDX-2 expression was performed on formalin-fixed, paraffin-embedded primary CRC tissue samples from 449 patients. Correlation between CDX-2 expression and clinicopathological and molecular characteristics was evaluated. Univariate and multivariate survival analyses were performed to determine the prognostic value of loss of CDX-2 expression. RESULTS Of 449 patients, 84% were stage I-III. CDX-2-negative expression was identified in 18 of 441 (4.1%) patients. Loss of CDX-2 expression was more commonly found in patients with right-sided tumors rather than left-sided tumors (odds ratio [OR] = 3.57; p = 0.009), deficient mismatch repair (dMMR) compared to proficient MMR (pMMR) (OR = 3.7; p = 0.012), and BRAF mutation compared to BRAF wild type (OR = 8.06; p = 0.002). Univariate analysis revealed that stage I-III CRC patients with loss of CDX-2 expression had significantly worse overall survival (OS) and disease-free survival (DFS) than those with positive CDX-2 expression (5-year OS = 33.3% vs. 74.6%, respectively; p < 0.001, and 5-year DFS: 42.9% vs. 69.5%, respectively; p = 0.004). Loss of CDX-2 expression remained significantly associated with worse OS compared to positive CDX-2 expression in multivariate analysis (hazard ratio [HR] = 2.4; 95% confidence interval [CI], 1.12-5.11; p = 0.023). CONCLUSIONS Loss of CDX-2 expression was found to be associated with right-sided tumor, dMMR status, and BRAF mutation. Moreover, loss of CDX-2 expression is a poor prognostic factor for OS in stage I-III, even among patients with dMMR tumors.
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Affiliation(s)
- Krittiya Korphaisarn
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanjana Sukhokanjanachusak
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Ananya Pongpaibul
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Vitoon Chinswangwatanakul
- Division of General Surgery, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Charuwan Akewanlop
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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18
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Larsen S, Seidelin JB, Davidsen J, Dahlgaard K, Nielsen CH, Bennett EP, Pedersen OB, Coskun M, Troelsen JT. CDX2 regulates interleukin-33 gene expression in intestinal epithelial cells (LS174T). FEBS Open Bio 2021; 11:1638-1644. [PMID: 33838073 PMCID: PMC8167865 DOI: 10.1002/2211-5463.13161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/18/2021] [Accepted: 04/08/2021] [Indexed: 01/22/2023] Open
Abstract
Dysregulation of interleukin-33 (IL-33) has been implicated in the pathogenesis of several autoimmune and inflammatory diseases, but few studies have examined transcriptional regulation of the IL33 gene. In the intestines, gene regulation is controlled by a transcription factor network of which the intestinal-specific transcription factor CDX2 is a key component. In this study, we investigated whether CDX2 regulates IL33 mRNA expression. We examined IL33 mRNA expression in primary colonic epithelial cells from healthy humans and epithelial cell lines, revealing high expression levels in primary colonic and LS174T cells. Combining genomics data (ChIP-seq, RNA-seq) and IL33 promoter analyses in LS174T cells revealed intronic enhancer activity in the IL33 gene that is dependent on CDX2 expression. Western blotting and qRT-PCR confirmed that IL33 expression is upregulated in a CDX2 concentration-dependent manner, thereby providing the first evidence that CDX2 regulates the expression of IL33.
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Affiliation(s)
- Sylvester Larsen
- Department of Science and Environment, Roskilde University, Denmark.,Department of Clinical Immunology, Naestved Hospital, Denmark
| | - Jakob Benedict Seidelin
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Johanne Davidsen
- Department of Science and Environment, Roskilde University, Denmark.,Department of Surgical Gastroenterology, Zealand University Hospital, Køge, Denmark
| | - Katja Dahlgaard
- Department of Science and Environment, Roskilde University, Denmark
| | - Claus Henrik Nielsen
- Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Section 7521, Copenhagen University Hospital Rigshospitalet, Denmark
| | - Eric Paul Bennett
- Department of Odontology, Copenhagen Center for Glycomics, Faculty of Health Sciences, University of Copenhagen, Denmark
| | | | - Mehmet Coskun
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, Herlev, Denmark.,Department of Biology, The Bioinformatics Centre, Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Denmark
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Cho SH, Seung BJ, Kim SH, Bae MK, Lim HY, Sur JH. CDX-2 Protein and mRNA Expression in Canine Intestinal Adenocarcinoma. J Comp Pathol 2021; 184:24-30. [PMID: 33894874 DOI: 10.1016/j.jcpa.2021.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/10/2020] [Accepted: 01/24/2021] [Indexed: 11/16/2022]
Abstract
Caudal-related homeobox transcription factor 2 (CDX-2) is a specific cell marker employed in the diagnosis of human colorectal cancer. Reduced CDX-2 expression is associated with several indicators of poor prognosis in human colorectal cancer. In the present study, CDX-2 protein levels were evaluated and patterns of CDX-2 mRNA accumulation are described for the first time in canine intestinal adenocarcinoma (CIA). Canine intestinal epithelial biopsies from 21 CIAs and 14 non-neoplastic control tissues were retrospectively evaluated for CDX-2 expression and CDX-2 mRNA levels by immunohistochemistry and RNA in-situ hybridization (RNA-ISH), respectively. The mean percentage or intensity of expression was decreased in the CIA group (P = 0.000). RNA-ISH demonstrated a significant correlation between the decrease in CDX-2 mRNA levels and CDX-2 protein expression (P = 0.000). CDX-2 downregulation, in terms of protein as well as mRNA levels, may serve as a diagnostic marker in CIA.
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Affiliation(s)
- Seung-Hee Cho
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Byung-Joon Seung
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Soo-Hyeon Kim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Min-Kyung Bae
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Ha-Young Lim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jung-Hyang Sur
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.
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20
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Zhu Y, Hryniuk A, Foley T, Hess B, Lohnes D. Cdx2 Regulates Intestinal EphrinB1 through the Notch Pathway. Genes (Basel) 2021; 12:genes12020188. [PMID: 33525395 PMCID: PMC7911442 DOI: 10.3390/genes12020188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 01/23/2021] [Indexed: 01/07/2023] Open
Abstract
The majority of colorectal cancers harbor loss-of-function mutations in APC, a negative regulator of canonical Wnt signaling, leading to intestinal polyps that are predisposed to malignant progression. Comparable murine APC alleles also evoke intestinal polyps, which are typically confined to the small intestine and proximal colon, but do not progress to carcinoma in the absence of additional mutations. The Cdx transcription factors Cdx1 and Cdx2 are essential for homeostasis of the intestinal epithelium, and loss of Cdx2 has been associated with more aggressive subtypes of colorectal cancer in the human population. Consistent with this, concomitant loss of Cdx1 and Cdx2 in a murine APC mutant background leads to an increase in polyps throughout the intestinal tract. These polyps also exhibit a villous phenotype associated with the loss of EphrinB1. However, the basis for these outcomes is poorly understood. To further explore this, we modeled Cdx2 loss in SW480 colorectal cancer cells. We found that Cdx2 impacted Notch signaling in SW480 cells, and that EphrinB1 is a Notch target gene. As EphrinB1 loss also leads to a villus tumor phenotype, these findings evoke a mechanism by which Cdx2 impacts colorectal cancer via Notch-dependent EphrinB1 signaling.
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Affiliation(s)
- Yalun Zhu
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
| | - Alexa Hryniuk
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, MB R3E 0J9, Canada
| | - Tanya Foley
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
| | - Bradley Hess
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
| | - David Lohnes
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
- Correspondence: ; Tel.: +1-613-562-5800 (ext. 8684)
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21
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Quantitative analysis of CDX2 protein expression improves its clinical utility as a prognostic biomarker in stage II and III colon cancer. Eur J Cancer 2020; 144:91-100. [PMID: 33341450 DOI: 10.1016/j.ejca.2020.10.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/08/2020] [Accepted: 10/18/2020] [Indexed: 01/18/2023]
Abstract
AIM Better stratification of patients with stage II and stage III colon cancer for risk of recurrence is urgently needed. The present study aimed to validate the prognostic value of CDX2 protein expression in colon cancer tissue by routine immunohistochemistry and to evaluate its performance in a head-to-head comparison with tandem mass spectrometry-based proteomics. PATIENT AND METHODS CDX2 protein expression was evaluated in 386 stage II and III primary colon cancers by immunohistochemical staining of tissue microarrays and by liquid chromatography with tandem mass spectrometry (LC-MS/MS) analysis using formalin-fixed paraffin-embedded tissue sections of a matched subset of 23 recurrent and 23 non-recurrent colon cancers. Association between CDX2 expression and disease-specific survival (DSS) was investigated. RESULTS Low levels of CDX2 protein expression in stage II and III colon cancer as determined by immunohistochemistry was associated with poor DSS (hazard ratio [HR] = 1.97 (95% confidence interval [CI]: 1.26-3.06); p = 0.002). Based on analysis of a selected sample subset, CDX2 prognostic value was more pronounced when detected by LC-MS/MS (HR = 7.56 (95% CI: 2.49-22.95); p < 0.001) compared to detection by immunohistochemistry (HR = 1.60 (95% CI: 0.61-4.22); p = 0.34). CONCLUSION This study validated CDX2 protein expression as a prognostic biomarker in stage II and III colon cancer, conform previous publications. CDX2 prognostic value appeared to be underestimated when detected by routine immunohistochemistry, probably due to the semiquantitative and subjective nature of this methodology. Quantitative analysis of CDX2 substantially improved its clinical utility as a prognostic biomarker. Therefore, development of routinely applicable quantitative assays for CDX2 expression is needed to facilitate its clinical implementation.
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22
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Chen HY, Hu Y, Lu NH, Zhu Y. Caudal type homeoboxes as a driving force in Helicobacter pylori infection-induced gastric intestinal metaplasia. Gut Microbes 2020; 12:1-12. [PMID: 33031021 PMCID: PMC7553748 DOI: 10.1080/19490976.2020.1809331] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
(H. pylori), a common pathogenic bacterium in the stomach, has been demonstrated to be a major cause of gastric cancer (GC). The typical pathological evolution of H. pylori infection-induced GC involves development from gastric atrophy, via intestinal metaplasia (IM) and dysplasia, to intestinal-type GC. During this process, IM is considered to be an "irreversible point" that significantly increases the risk for GC. Therefore, the elucidation of the mechanism underlying IM is of great significance for the prevention and treatment of gastric mucosal carcinogenesis associated with H. pylori infection. Caudal type homeoboxes (CDXs) are transcription factors involved in intestinal differentiation establishment and the maintenance of normal intestinal mucosa and IM. H. pylori infection increases the expression of CDXs through epigenetic regulation, the nuclear factor-kappaB signaling pathway and its downstream proinflammatory factors, and the transforming growth factor-beta signaling pathway, leading to the progression from normal gastric mucosa to IM. However, the precise mechanisms of gastric intestinal metaplasia have not yet been fully elucidated. In this review, we focus on research progress revealing the functions of CDXs in H. pylori infection-induced IM, as well as the regulators modulating this process.
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Affiliation(s)
- Hong-Yan Chen
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Yi Hu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Nong-Hua Lu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Yin Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China,CONTACT Yin Zhu Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang330006, Jiangxi Province, China
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23
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Rispal J, Escaffit F, Trouche D. Chromatin Dynamics in Intestinal Epithelial Homeostasis: A Paradigm of Cell Fate Determination versus Cell Plasticity. Stem Cell Rev Rep 2020; 16:1062-1080. [PMID: 33051755 PMCID: PMC7667136 DOI: 10.1007/s12015-020-10055-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2020] [Indexed: 12/12/2022]
Abstract
The rapid renewal of intestinal epithelium is mediated by a pool of stem cells, located at the bottom of crypts, giving rise to highly proliferative progenitor cells, which in turn differentiate during their migration along the villus. The equilibrium between renewal and differentiation is critical for establishment and maintenance of tissue homeostasis, and is regulated by signaling pathways (Wnt, Notch, Bmp…) and specific transcription factors (TCF4, CDX2…). Such regulation controls intestinal cell identities by modulating the cellular transcriptome. Recently, chromatin modification and dynamics have been identified as major actors linking signaling pathways and transcriptional regulation in the control of intestinal homeostasis. In this review, we synthesize the many facets of chromatin dynamics involved in controlling intestinal cell fate, such as stemness maintenance, progenitor identity, lineage choice and commitment, and terminal differentiation. In addition, we present recent data underlying the fundamental role of chromatin dynamics in intestinal cell plasticity. Indeed, this plasticity, which includes dedifferentiation processes or the response to environmental cues (like microbiota’s presence or food ingestion), is central for the organ’s physiology. Finally, we discuss the role of chromatin dynamics in the appearance and treatment of diseases caused by deficiencies in the aforementioned mechanisms, such as gastrointestinal cancer, inflammatory bowel disease or irritable bowel syndrome. Graphical abstract ![]()
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Affiliation(s)
- Jérémie Rispal
- LBCMCP, Centre of Integrative Biology (CBI), Université de Toulouse, CNRS, UPS, Toulouse, 31062, France
| | - Fabrice Escaffit
- LBCMCP, Centre of Integrative Biology (CBI), Université de Toulouse, CNRS, UPS, Toulouse, 31062, France.
| | - Didier Trouche
- LBCMCP, Centre of Integrative Biology (CBI), Université de Toulouse, CNRS, UPS, Toulouse, 31062, France
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24
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Abouelkhair MB, Mabrouk SH, Zaki SSA, Nada OH, Hakim SA. The Diagnostic Value of Cadherin 17 and CDX2 Expression as Immunohistochemical Markers in Colorectal Adenocarcinoma. J Gastrointest Cancer 2020; 52:960-969. [PMID: 32929682 DOI: 10.1007/s12029-020-00513-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Colorectal cancer is a major cause of morbidity and mortality throughout the world. Although the diagnosis of colorectal cancer is straightforward in primary site, yet it may represent a diagnostic problem in metastatic tumor of unknown primary origin. Hence, immunohistochemical analysis in combination with morphologic assessment and correlation with clinical data becomes crucial, because it is important to specify the primary site of metastasis since some specific tumor types may respond well to targeted molecular therapies. Therefore, establishment of reliable diagnostic markers that confirm or rule out colorectal origin is mandatory. AIM To study the expression of cadherin 17 and CDX2 in colorectal carcinoma and to evaluate their diagnostic roles in identifying metastatic colonic from non-colonic adenocarcinomas in cancer of unknown primary site. DESIGN AND METHODS This retrospective study included 65 cases of adenocarcinomas: 35 cases of colorectal adenocarcinoma (primary or metastatic) and 30 cases of non-colorectal adenocarcinoma. They were retrieved from the archives of Pathology Department of Ain Shams University and Ain Shams University Specialized Hospitals during the period from 2010 to 2015. Immunohistochemical study was performed using cadherin 17 and CDX2 antibodies. RESULTS The sensitivity and specificity of CDX2 and cadherin 17 are 97.1% and 53.3% and 100% and 50% in detecting colonic adenocarcinoma respectively. The PPV, NPV, and overall accuracy of CDX2 versus cadherin 17 were 70.8%, 94.1%, and 76.9% versus 70%, 100%, and 76.9% respectively. CONCLUSION Cadherin 17 is a more sensitive marker than CDX2 in diagnosis of carcinoma of unknown primary site especially when colorectal carcinoma is suspected.
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Affiliation(s)
- Mariam B Abouelkhair
- Department of Pathology, Faculty of Medicine, Ain Shams University, Abbasseya Square, Cairo, 11561, Egypt
| | - Shadia H Mabrouk
- Department of Pathology, Faculty of Medicine, Ain Shams University, Abbasseya Square, Cairo, 11561, Egypt
| | - Sahar S A Zaki
- Department of Pathology, Faculty of Medicine, Ain Shams University, Abbasseya Square, Cairo, 11561, Egypt
| | - Ola H Nada
- Department of Pathology, Faculty of Medicine, Ain Shams University, Abbasseya Square, Cairo, 11561, Egypt
| | - Sarah A Hakim
- Department of Pathology, Faculty of Medicine, Ain Shams University, Abbasseya Square, Cairo, 11561, Egypt.
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25
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Chen L, Marishta A, Ellison CE, Verzi MP. Identification of Transcription Factors Regulating SARS-CoV-2 Entry Genes in the Intestine. Cell Mol Gastroenterol Hepatol 2020; 11:181-184. [PMID: 32810597 PMCID: PMC7428702 DOI: 10.1016/j.jcmgh.2020.08.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 12/18/2022]
Affiliation(s)
- L Chen
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, New Jersey; Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey.
| | - A Marishta
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, New Jersey
| | - C E Ellison
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, New Jersey
| | - M P Verzi
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, New Jersey; Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey; Rutgers Center for Lipid Research, New Brunswick, New Jersey.
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26
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Reischmann N, Andrieux G, Griffin R, Reinheckel T, Boerries M, Brummer T. BRAF V600E drives dedifferentiation in small intestinal and colonic organoids and cooperates with mutant p53 and Apc loss in transformation. Oncogene 2020; 39:6053-6070. [PMID: 32792685 PMCID: PMC7498370 DOI: 10.1038/s41388-020-01414-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/19/2020] [Accepted: 07/29/2020] [Indexed: 12/19/2022]
Abstract
BRAFV600E confers poor prognosis and is associated with a distinct subtype of colorectal cancer (CRC). Little is known, however, about the genetic events driving the initiation and progression of BRAFV600E mutant CRCs. Recent genetic analyses of CRCs indicate that BRAFV600E often coexists with alterations in the WNT- and p53 pathways, but their cooperation remains ill-defined. Therefore, we systematically compared small and large intestinal organoids from mice harboring conditional BraffloxV600E, Trp53LSL-R172H, and/or Apcflox/flox alleles. Using these isogenic models, we observe tissue-specific differences toward sudden BRAFV600E expression, which can be attributed to different ERK-pathway ground states in small and large intestinal crypts. BRAFV600E alone causes transient proliferation and suppresses epithelial organization, followed by organoid disintegration. Moreover, BRAFV600E induces a fetal-like dedifferentiation transcriptional program in colonic organoids, which resembles human BRAFV600E-driven CRC. Co-expression of p53R172H delays organoid disintegration, confers anchorage-independent growth, and induces invasive properties. Interestingly, p53R172H cooperates with BRAFV600E to modulate the abundance of transcripts linked to carcinogenesis, in particular within colonic organoids. Remarkably, WNT-pathway activation by Apc deletion fully protects organoids against BRAFV600E-induced disintegration and confers growth/niche factor independence. Still, Apc-deficient BRAFV600E-mutant organoids remain sensitive toward the MEK inhibitor trametinib, albeit p53R172H confers partial resistance against this clinically relevant compound. In summary, our systematic comparison of the response of small and large intestinal organoids to oncogenic alterations suggests colonic organoids to be better suited to model the human situation. In addition, our work on BRAF-, p53-, and WNT-pathway mutations provides new insights into their cooperation and for the design of targeted therapies.
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Affiliation(s)
- Nadine Reischmann
- Institute of Molecular Medicine and Cell Research (IMMZ), University of Freiburg, Freiburg, Germany.,Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Geoffroy Andrieux
- Institute of Medical Bioinformatics and Systems Medicine, Medical Center-University of Freiburg, Freiburg, Germany.,German Cancer Consortium (DKTK), partner site Freiburg; and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ricarda Griffin
- Institute of Molecular Medicine and Cell Research (IMMZ), University of Freiburg, Freiburg, Germany
| | - Thomas Reinheckel
- Institute of Molecular Medicine and Cell Research (IMMZ), University of Freiburg, Freiburg, Germany.,German Cancer Consortium (DKTK), partner site Freiburg; and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Comprehensive Cancer Centre Freiburg (CCCF), University Medical Center Freiburg, University of Freiburg, Freiburg, Germany.,Centre for Biological Signalling Studies BIOSS, University of Freiburg, Freiburg, Germany
| | - Melanie Boerries
- Institute of Medical Bioinformatics and Systems Medicine, Medical Center-University of Freiburg, Freiburg, Germany.,German Cancer Consortium (DKTK), partner site Freiburg; and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Comprehensive Cancer Centre Freiburg (CCCF), University Medical Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Tilman Brummer
- Institute of Molecular Medicine and Cell Research (IMMZ), University of Freiburg, Freiburg, Germany. .,German Cancer Consortium (DKTK), partner site Freiburg; and German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Comprehensive Cancer Centre Freiburg (CCCF), University Medical Center Freiburg, University of Freiburg, Freiburg, Germany. .,Centre for Biological Signalling Studies BIOSS, University of Freiburg, Freiburg, Germany.
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27
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Verzi MP, Shivdasani RA. Epigenetic regulation of intestinal stem cell differentiation. Am J Physiol Gastrointest Liver Physiol 2020; 319:G189-G196. [PMID: 32628072 PMCID: PMC7500269 DOI: 10.1152/ajpgi.00084.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To fulfill the lifelong need to supply diverse epithelial cells, intestinal stem cells (ISCs) rely on executing accurate transcriptional programs. This review addresses the mechanisms that control those programs. Genes that define cell behaviors and identities are regulated principally through thousands of dispersed enhancers, each individually <1 kb long and positioned from a few to hundreds of kilobases away from transcription start sites, upstream or downstream from coding genes or within introns. Wnt, Notch, and other epithelial control signals feed into these cis-regulatory DNA elements, which are also common loci of polymorphisms and mutations that confer disease risk. Cell-specific gene activity requires promoters to interact with the correct combination of signal-responsive enhancers. We review the current state of knowledge in ISCs regarding active enhancers, the nucleosome modifications that may enable appropriate and hinder inappropriate enhancer-promoter contacts, and the roles of lineage-restricted transcription factors.
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Affiliation(s)
- Michael P. Verzi
- 1Department of Genetics, Rutgers, State University of New Jersey, Piscataway, New Jersey,2Cancer Institute of New Jersey and Human Genetics Institute of New Jersey, Piscataway, New Jersey
| | - Ramesh A. Shivdasani
- 3Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts,4Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts,5Harvard Stem Cell Institute, Cambridge, Massachusetts
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28
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Francis R, Guo H, Streutker C, Ahmed M, Yung T, Dirks PB, He HH, Kim TH. Gastrointestinal transcription factors drive lineage-specific developmental programs in organ specification and cancer. SCIENCE ADVANCES 2019; 5:eaax8898. [PMID: 31844668 PMCID: PMC6905862 DOI: 10.1126/sciadv.aax8898] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 10/16/2019] [Indexed: 05/09/2023]
Abstract
Transcription factors (TFs) are spatially and temporally regulated during gut organ specification. Although accumulating evidence shows aberrant reactivation of developmental programs in cancer, little is known about how TFs drive lineage specification in development and cancer. We first defined gastrointestinal tissue-specific chromatin accessibility and gene expression during development, identifying the dynamic epigenetic regulation of SOX family of TFs. We revealed that Sox2 is not only essential for gastric specification, by maintaining chromatin accessibility at forestomach lineage loci, but also sufficient to promote forestomach/esophageal transformation upon Cdx2 deletion. By comparing our gastrointestinal lineage-specific transcriptome to human gastrointestinal cancer data, we found that stomach and intestinal lineage-specific programs are reactivated in Sox2high /Sox9high and Cdx2high cancers, respectively. By analyzing mice deleted for both Sox2 and Sox9, we revealed their potentially redundant roles in both gastric development and cancer, highlighting the importance of developmental lineage programs reactivated by gastrointestinal TFs in cancer.
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Affiliation(s)
- Roshane Francis
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Haiyang Guo
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Catherine Streutker
- Department of Laboratory Medicine, St. Michael’s Hospital, Toronto, Ontario M5B 1W8, Canada
| | - Musaddeque Ahmed
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Theodora Yung
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Peter B. Dirks
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Housheng Hansen He
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 2M9, Canada
- Corresponding author. (T.-H.K.); (H.H.H.)
| | - Tae-Hee Kim
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Corresponding author. (T.-H.K.); (H.H.H.)
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29
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Chen L, Toke NH, Luo S, Vasoya RP, Aita R, Parthasarathy A, Tsai YH, Spence JR, Verzi MP. HNF4 factors control chromatin accessibility and are redundantly required for maturation of the fetal intestine. Development 2019; 146:dev.179432. [PMID: 31345929 DOI: 10.1242/dev.179432] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/10/2019] [Indexed: 12/17/2022]
Abstract
As embryos mature, cells undergo remarkable transitions that are accompanied by shifts in transcription factor regulatory networks. Mechanisms driving developmental transitions are incompletely understood. The embryonic intestine transitions from a rapidly proliferating tube with pseudostratified epithelium prior to murine embryonic day (E) 14.5 to an exquisitely folded columnar epithelium in fetal stages. We sought to identify factors driving mouse fetal intestinal maturation by mining chromatin accessibility data for transcription factor motifs. ATAC-seq accessible regions shift during tissue maturation, with CDX2 transcription factor motifs abundant at chromatin-accessible regions of the embryo. Hepatocyte nuclear factor 4 (HNF4) transcription factor motifs are the most abundant in the fetal stages (>E16.5). Genetic inactivation of Hnf4a and its paralog Hnf4g revealed that HNF4 factors are redundantly required for fetal maturation. CDX2 binds to and activates Hnf4 gene loci to elevate HNF4 expression at fetal stages. HNF4 and CDX2 transcription factors then occupy shared genomic regulatory sites to promote chromatin accessibility and gene expression in the maturing intestine. Thus, HNF4 paralogs are key components of an intestinal transcription factor network shift during the embryonic to fetal transition.
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Affiliation(s)
- Lei Chen
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA.,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA
| | - Natalie H Toke
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA
| | - Shirley Luo
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA
| | - Roshan P Vasoya
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA
| | - Rohit Aita
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA
| | - Aditya Parthasarathy
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA
| | - Yu-Hwai Tsai
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Jason R Spence
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.,Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.,Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, MI, USA.,Center for Organogenesis, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Michael P Verzi
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA .,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA
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30
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Xu W, Zhu Y, Shen W, Ding W, Wu T, Guo Y, Chen X, Zhou M, Chen Y, Cui L, Du P. Combination of CDX2 expression and T stage improves prognostic prediction of colorectal cancer. J Int Med Res 2019; 47:1829-1842. [PMID: 30616445 PMCID: PMC6567745 DOI: 10.1177/0300060518819620] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/22/2018] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE Prognostic prediction of colorectal cancer (CRC) remains challenging because of its heterogeneity. Aberrant expression of caudal-type homeobox transcription factor 2 (CDX2) is strongly correlated with the prognosis of CRC. METHODS Tissue samples of patients with CRC who underwent surgery in Xinhua Hospital (Shanghai, China) from January 2010 to January 2013 were collected. CDX2 expression was semiquantitatively evaluated via immunohistochemistry. RESULTS In total, 138 patients were enrolled in this study from a prospectively maintained institutional cancer database. The median follow-up duration was 57.5 months (interquartile range, 17.0-71.0 months). In the Cox proportional hazards model, low CDX2 expression combined with stage T4 CRC was significantly the worst prognostic factor for disease-free survival (hazard ratio = 7.020, 95% confidence interval = 3.922-12.564) and overall survival (hazard ratio = 5.176, 95% CI = 3.237-10.091). In the Kaplan-Meier survival analysis, patients with low CDX2 expression and stage T4 CRC showed significantly worse disease-free survival and overall survival than those with low CDX2 expression alone. CONCLUSION CDX2 expression combined with the T stage was more accurate for predicting the prognosis of CRC. Determining the prognosis of CRC using more than one variable is valuable in developing appropriate treatment and follow-up strategies.
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Affiliation(s)
- Weimin Xu
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yilian Zhu
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wei Shen
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wenjun Ding
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Tingyu Wu
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuegui Guo
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaobing Chen
- Department of Oncology, Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, China
| | - Mingxia Zhou
- Department of Gastroenterology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yingwei Chen
- Department of Gastroenterology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Long Cui
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Peng Du
- Department of Colorectal Surgery, Xin-Hua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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31
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Foley TE, Hess B, Savory JGA, Ringuette R, Lohnes D. Role of Cdx factors in early mesodermal fate decisions. Development 2019; 146:146/7/dev170498. [PMID: 30936115 DOI: 10.1242/dev.170498] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 03/01/2019] [Indexed: 12/30/2022]
Abstract
Murine cardiac and hematopoietic progenitors are derived from Mesp1+ mesoderm. Cdx function impacts both yolk sac hematopoiesis and cardiogenesis in zebrafish, suggesting that Cdx family members regulate early mesoderm cell fate decisions. We found that Cdx2 occupies a number of transcription factor loci during embryogenesis, including key regulators of both cardiac and blood development, and that Cdx function is required for normal expression of the cardiogenic transcription factors Nkx2-5 and Tbx5 Furthermore, Cdx and Brg1, an ATPase subunit of the SWI/SNF chromatin remodeling complex, co-occupy a number of loci, suggesting that Cdx family members regulate target gene expression through alterations in chromatin architecture. Consistent with this, we demonstrate loss of Brg1 occupancy and altered chromatin structure at several cardiogenic genes in Cdx-null mutants. Finally, we provide evidence for an onset of Cdx2 expression at E6.5 coinciding with egression of cardiac progenitors from the primitive streak. Together, these findings suggest that Cdx functions in multi-potential mesoderm to direct early cell fate decisions through transcriptional regulation of several novel target genes, and provide further insight into a potential epigenetic mechanism by which Cdx influences target gene expression.
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Affiliation(s)
- Tanya E Foley
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Bradley Hess
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Joanne G A Savory
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Randy Ringuette
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - David Lohnes
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
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32
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Kumar N, Tsai YH, Chen L, Zhou A, Banerjee KK, Saxena M, Huang S, Toke NH, Xing J, Shivdasani RA, Spence JR, Verzi MP. The lineage-specific transcription factor CDX2 navigates dynamic chromatin to control distinct stages of intestine development. Development 2019; 146:dev172189. [PMID: 30745430 PMCID: PMC6432663 DOI: 10.1242/dev.172189] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/30/2019] [Indexed: 12/11/2022]
Abstract
Lineage-restricted transcription factors, such as the intestine-specifying factor CDX2, often have dual requirements across developmental time. Embryonic loss of CDX2 triggers homeotic transformation of intestinal fate, whereas adult-onset loss compromises crucial physiological functions but preserves intestinal identity. It is unclear how such diverse requirements are executed across the developmental continuum. Using primary and engineered human tissues, mouse genetics, and a multi-omics approach, we demonstrate that divergent CDX2 loss-of-function phenotypes in embryonic versus adult intestines correspond to divergent CDX2 chromatin-binding profiles in embryonic versus adult stages. CDX2 binds and activates distinct target genes in developing versus adult mouse and human intestinal cells. We find that temporal shifts in chromatin accessibility correspond to these context-specific CDX2 activities. Thus, CDX2 is not sufficient to activate a mature intestinal program; rather, CDX2 responds to its environment, targeting stage-specific genes to contribute to either intestinal patterning or mature intestinal function. This study provides insights into the mechanisms through which lineage-specific regulatory factors achieve divergent functions over developmental time.
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Affiliation(s)
- Namit Kumar
- Rutgers, the State University of New Jersey, Department of Genetics, Piscataway, NJ 08854, USA
- Cancer Institute of New Jersey, and Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Yu-Hwai Tsai
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lei Chen
- Rutgers, the State University of New Jersey, Department of Genetics, Piscataway, NJ 08854, USA
- Cancer Institute of New Jersey, and Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Anbo Zhou
- Rutgers, the State University of New Jersey, Department of Genetics, Piscataway, NJ 08854, USA
- Cancer Institute of New Jersey, and Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Kushal K Banerjee
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02215, USA
- Harvard Stem Cell Institute, Cambridge, MA 02139, USA
| | - Madhurima Saxena
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02215, USA
- Harvard Stem Cell Institute, Cambridge, MA 02139, USA
| | - Sha Huang
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Natalie H Toke
- Rutgers, the State University of New Jersey, Department of Genetics, Piscataway, NJ 08854, USA
- Cancer Institute of New Jersey, and Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Jinchuan Xing
- Rutgers, the State University of New Jersey, Department of Genetics, Piscataway, NJ 08854, USA
- Cancer Institute of New Jersey, and Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Ramesh A Shivdasani
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02215, USA
- Harvard Stem Cell Institute, Cambridge, MA 02139, USA
| | - Jason R Spence
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
- Center for Organogenesis, University of Michigan Medical School, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, MI 48109, USA
| | - Michael P Verzi
- Rutgers, the State University of New Jersey, Department of Genetics, Piscataway, NJ 08854, USA
- Cancer Institute of New Jersey, and Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
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33
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Banerjee KK, Saxena M, Kumar N, Chen L, Cavazza A, Toke NH, O'Neill NK, Madha S, Jadhav U, Verzi MP, Shivdasani RA. Enhancer, transcriptional, and cell fate plasticity precedes intestinal determination during endoderm development. Genes Dev 2018; 32:1430-1442. [PMID: 30366903 PMCID: PMC6217732 DOI: 10.1101/gad.318832.118] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/27/2018] [Indexed: 02/07/2023]
Abstract
After acquiring competence for selected cell fates, embryonic primordia may remain plastic for variable periods before tissue identity is irrevocably determined. Banerjee et al. show that the midgut endoderm is primed for heterologous cell fates and that transcription factors act on a background of shifting chromatin access to determine intestinal at the expense of foregut identity. After acquiring competence for selected cell fates, embryonic primordia may remain plastic for variable periods before tissue identity is irrevocably determined (commitment). We investigated the chromatin basis for these developmental milestones in mouse endoderm, a tissue with recognizable rostro–caudal patterning and transcription factor (TF)-dependent interim plasticity. Foregut-specific enhancers are as accessible and active in early midgut as in foregut endoderm, and intestinal enhancers and identity are established only after ectopic cis-regulatory elements are decommissioned. Depletion of the intestinal TF CDX2 before this cis element transition stabilizes foregut enhancers, reinforces ectopic transcriptional programs, and hence imposes foregut identities on the midgut. Later in development, as the window of chromatin plasticity elapses, CDX2 depletion weakens intestinal, without strengthening foregut, enhancers. Thus, midgut endoderm is primed for heterologous cell fates, and TFs act on a background of shifting chromatin access to determine intestinal at the expense of foregut identity. Similar principles likely govern other fate commitments.
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Affiliation(s)
- Kushal K Banerjee
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Madhurima Saxena
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Namit Kumar
- Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA
| | - Lei Chen
- Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA
| | - Alessia Cavazza
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Natalie H Toke
- Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA
| | - Nicholas K O'Neill
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA
| | - Shariq Madha
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA
| | - Unmesh Jadhav
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Michael P Verzi
- Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA.,Cancer Institute of New Jersey, Piscataway, New Jersey 08854, USA.,Human Genetics Institute of New Jersey, Piscataway, New Jersey 08854, USA
| | - Ramesh A Shivdasani
- Department of Medical Oncology, Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA.,Harvard Stem Cell Institute, Cambridge, Massachusetts 02139, USA
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34
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Bruun J, Sveen A, Barros R, Eide PW, Eilertsen I, Kolberg M, Pellinen T, David L, Svindland A, Kallioniemi O, Guren MG, Nesbakken A, Almeida R, Lothe RA. Prognostic, predictive, and pharmacogenomic assessments of CDX2 refine stratification of colorectal cancer. Mol Oncol 2018; 12:1639-1655. [PMID: 29900672 PMCID: PMC6120232 DOI: 10.1002/1878-0261.12347] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/14/2018] [Accepted: 05/23/2018] [Indexed: 01/04/2023] Open
Abstract
We aimed to refine the value of CDX2 as an independent prognostic and predictive biomarker in colorectal cancer (CRC) according to disease stage and chemotherapy sensitivity in preclinical models. CDX2 expression was evaluated in 1045 stage I–IV primary CRCs by gene expression (n = 403) or immunohistochemistry (n = 642) and in relation to 5‐year relapse‐free survival (RFS), overall survival (OS), and chemotherapy. Pharmacogenomic associations between CDX2 expression and 69 chemotherapeutics were assessed by drug screening of 35 CRC cell lines. CDX2 expression was lost in 11.6% of cases and showed independent poor prognostic value in multivariable models. For individual stages, CDX2 was prognostic only in stage IV, independent of chemotherapy. Among stage I–III patients not treated in an adjuvant setting, CDX2 loss was associated with a particularly poor survival in the BRAF‐mutated subgroup, but prognostic value was independent of microsatellite instability status and the consensus molecular subtypes. In stage III, the 5‐year RFS rate was higher among patients with loss of CDX2 who received adjuvant chemotherapy than among patients who did not. The CDX2‐negative cell lines were significantly more sensitive to chemotherapeutics than CDX2‐positive cells, and the multidrug resistance genes MDR1 and CFTR were significantly downregulated both in CDX2‐negative cells and in patient tumors. Loss of CDX2 in CRC is an adverse prognostic biomarker only in stage IV disease and appears to be associated with benefit from adjuvant chemotherapy in stage III. Early‐stage patients not qualifying for chemotherapy might be reconsidered for such treatment if their tumor has loss of CDX2 and mutated BRAF.
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Affiliation(s)
- Jarle Bruun
- Department of Molecular Oncology, Institute for Cancer Research, the Norwegian Radium Hospital, Oslo University Hospital, Norway.,K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway
| | - Anita Sveen
- Department of Molecular Oncology, Institute for Cancer Research, the Norwegian Radium Hospital, Oslo University Hospital, Norway.,K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway
| | - Rita Barros
- Institute of Molecular Pathology and Immunology, University of Porto (IPATIMUP), Portugal.,Instituto de Investigação e InovaçãoemSaúde (i3S), Porto, Portugal.,Faculty of Medicine, University of Porto, Portugal
| | - Peter W Eide
- Department of Molecular Oncology, Institute for Cancer Research, the Norwegian Radium Hospital, Oslo University Hospital, Norway.,K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway
| | - Ina Eilertsen
- Department of Molecular Oncology, Institute for Cancer Research, the Norwegian Radium Hospital, Oslo University Hospital, Norway.,K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway
| | - Matthias Kolberg
- Department of Molecular Oncology, Institute for Cancer Research, the Norwegian Radium Hospital, Oslo University Hospital, Norway.,K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway
| | - Teijo Pellinen
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
| | - Leonor David
- Institute of Molecular Pathology and Immunology, University of Porto (IPATIMUP), Portugal.,Instituto de Investigação e InovaçãoemSaúde (i3S), Porto, Portugal.,Faculty of Medicine, University of Porto, Portugal
| | - Aud Svindland
- K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway.,Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Norway.,Department of Pathology, Oslo University Hospital, Norway
| | - Olli Kallioniemi
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland.,Science for Life Laboratory, Solna, Sweden.,Department of Oncology and Pathology, Karolinska Institutet, Solna, Sweden
| | - Marianne G Guren
- K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway.,Department of Oncology, Oslo University Hospital, Norway
| | - Arild Nesbakken
- K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway.,Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Norway.,Department of Gastrointestinal Surgery, Aker Hospital - Oslo University Hospital, Norway
| | - Raquel Almeida
- Institute of Molecular Pathology and Immunology, University of Porto (IPATIMUP), Portugal.,Instituto de Investigação e InovaçãoemSaúde (i3S), Porto, Portugal.,Faculty of Medicine, University of Porto, Portugal.,Biology Department, Faculty of Sciences, University of Porto, Portugal
| | - Ragnhild A Lothe
- Department of Molecular Oncology, Institute for Cancer Research, the Norwegian Radium Hospital, Oslo University Hospital, Norway.,K.G. Jebsen Colorectal Cancer Research Centre, Clinic for Cancer Medicine, Oslo University Hospital, Norway.,Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
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35
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Danielsen ET, Olsen AK, Coskun M, Nonboe AW, Larsen S, Dahlgaard K, Bennett EP, Mitchelmore C, Vogel LK, Troelsen JT. Intestinal regulation of suppression of tumorigenicity 14 (ST14) and serine peptidase inhibitor, Kunitz type -1 (SPINT1) by transcription factor CDX2. Sci Rep 2018; 8:11813. [PMID: 30087389 PMCID: PMC6081401 DOI: 10.1038/s41598-018-30216-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/23/2018] [Indexed: 12/14/2022] Open
Abstract
The type II membrane-anchored serine protease, matriptase, encoded by suppression of tumorgenicity-14 (ST14) regulates the integrity of the intestinal epithelial barrier in concert with its inhibitor, HAI-1 encoded by serine peptidase inhibitor, Kunitz type -1 (SPINT1). The balance of the protease/inhibitor gene expression ratio is vital in preventing the oncogenic potential of matriptase. The intestinal cell lineage is regulated by a transcriptional regulatory network where the tumor suppressor, Caudal homeobox 2 (CDX2) is considered to be an intestinal master transcription factor. In this study, we show that CDX2 has a dual function in regulating both ST14 and SPINT1, gene expression in intestinal cells. We find that CDX2 is not required for the basal ST14 and SPINT1 gene expression; however changes in CDX2 expression affects the ST14/SPINT1 mRNA ratio. Exploring CDX2 ChIP-seq data from intestinal cell lines, we identified genomic CDX2-enriched enhancer elements for both ST14 and SPINT1, which regulate their corresponding gene promoter activity. We show that CDX2 displays both repressive and enhancing regulatory abilities in a cell specific manner. Together, these data reveal new insight into transcriptional mechanisms controlling the intestinal matriptase/inhibitor balance.
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Affiliation(s)
- E Thomas Danielsen
- Department of Science and Environment, Roskilde University, Roskilde, Denmark.,Institute of Cellular and Molecular Medicine, the Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Anders Krüger Olsen
- Institute of Cellular and Molecular Medicine, the Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Mehmet Coskun
- Department of Gastroenterology, University of Copenhagen, DK-2730, Herlev, Denmark
| | - Annika W Nonboe
- Institute of Cellular and Molecular Medicine, the Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Sylvester Larsen
- Department of Science and Environment, Roskilde University, Roskilde, Denmark.,Department of Clinical Immunology, Naestved Hospital, Naestved, Region Zealand, Denmark
| | - Katja Dahlgaard
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Eric Paul Bennett
- Copenhagen Center for Glycomics, Department of Odontology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Cathy Mitchelmore
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Lotte Katrine Vogel
- Institute of Cellular and Molecular Medicine, the Panum Institute, University of Copenhagen, Copenhagen, Denmark
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36
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Ryan ÉJ, Creavin B, Khaw YL, Kelly ME, Mohan HM, Geraghty R, Ryan EJ, Kennelly R, Hanly A, Martin ST, Fennelly D, McDermott R, Gibbons D, O'Connell PR, Sheahan K, Winter DC. Effects of CDX2 on prognosis and chemotherapy responsiveness in mismatch repair-deficient colorectal cancer. BJS Open 2018; 2:456-463. [PMID: 30511046 PMCID: PMC6253792 DOI: 10.1002/bjs5.91] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 06/12/2018] [Indexed: 01/11/2023] Open
Abstract
Background Caudal‐related homeobox transcription factor 2 (CDX2) is an intestine‐specific transcription factor implicated in tumour differentiation, proliferation, cell adhesion and migration. Negative CDX2 status (CDX2−) is associated with worse prognosis in colorectal cancer and may identify high‐risk stage II disease that benefits from adjuvant chemotherapy. This observational study investigated whether CDX2− is associated with prognosis or response to chemotherapy in the mismatch repair‐deficient (dMMR) phenotype of colorectal cancer. Methods Patients with resectable dMMR colorectal cancer were eligible for inclusion. The prognostic and predictive value of CDX2 expression on the presence of lymph node metastasis (LNM) and survival was investigated. CDX2 status was determined via immunohistochemistry using the Leica Bond™ CDX2 (clone EP25) ready‐to‐use primary antibody. Results Some 235 of 238 consecutive dMMR tumours were assessed for CDX2 status. CDX2− was observed in 15·7 per cent of colorectal cancer. Interobserver agreement was excellent (κ = 0·863; P < 0·001). CDX2− was significantly associated with female sex, increased size, advanced stage, worse conventional and poorly differentiated cluster (PDC) grade, mucinous morphology, perineural and lymphovascular invasion, and pN status (all P ≤ 0·038). CDX2− was not associated with LNM or survival in multivariable analysis. Independent predictors of LNM were PDC grade (odds ratio (OR) 4·12, 95 per cent c.i. 1·76 to 9·63; P = 0·001) and extramural venous invasion (OR 3·79, 1·62 to 8·85; P = 0·002). Budding (hazard ratio (HR) 2·79, 95 per cent c.i. 1·60 to 4·87; P < 0·001), pT status (HR 3·59, 1·29 to 10·01; P = 0·015) and adjuvant chemotherapy (HR 2·07, 1·15 to 3·74; P = 0·016) were independently associated with worse disease‐free survival. Conclusion CDX2− does not confer a worse prognosis in the dMMR phenotype of colorectal cancer. The MMR status of patients with colorectal cancer should be determined before assessing CDX2 status.
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Affiliation(s)
- É J Ryan
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - B Creavin
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - Y L Khaw
- Department of Histopathology, St Vincent's University Hospital Dublin Ireland
| | - M E Kelly
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - H M Mohan
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - R Geraghty
- Department of Histopathology, St Vincent's University Hospital Dublin Ireland
| | - E J Ryan
- School of Medicine and Medical Sciences University College Dublin Dublin Ireland
| | - R Kennelly
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - A Hanly
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - S T Martin
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
| | - D Fennelly
- Department of Oncology, St Vincent's University Hospital Dublin Ireland.,School of Medicine and Medical Sciences University College Dublin Dublin Ireland
| | - R McDermott
- Department of Oncology, St Vincent's University Hospital Dublin Ireland.,School of Medicine and Medical Sciences University College Dublin Dublin Ireland
| | - D Gibbons
- Department of Histopathology, St Vincent's University Hospital Dublin Ireland
| | - P R O'Connell
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland.,School of Medicine and Medical Sciences University College Dublin Dublin Ireland
| | - K Sheahan
- Department of Histopathology, St Vincent's University Hospital Dublin Ireland.,School of Medicine and Medical Sciences University College Dublin Dublin Ireland
| | - D C Winter
- Department of Surgery, St Vincent's University Hospital Dublin Ireland.,Centre for Colorectal Disease, St Vincent's University Hospital Dublin Ireland
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37
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Association of CDX2 Expression With Survival in Early Colorectal Cancer: A Systematic Review and Meta-analysis. Clin Colorectal Cancer 2018. [DOI: 10.1016/j.clcc.2018.02.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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39
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Ullmann P, Qureshi-Baig K, Rodriguez F, Ginolhac A, Nonnenmacher Y, Ternes D, Weiler J, Gäbler K, Bahlawane C, Hiller K, Haan S, Letellier E. Hypoxia-responsive miR-210 promotes self-renewal capacity of colon tumor-initiating cells by repressing ISCU and by inducing lactate production. Oncotarget 2018; 7:65454-65470. [PMID: 27589845 PMCID: PMC5323168 DOI: 10.18632/oncotarget.11772] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 08/25/2016] [Indexed: 01/01/2023] Open
Abstract
Low oxygen concentrations (hypoxia) are known to affect the cellular metabolism and have been suggested to regulate a subpopulation of cancer cells with tumorigenic properties, the so-called tumor-initiating cells (TICs). To better understand the mechanism of hypoxia-induced TIC activation, we set out to study the role of hypoxia-responsive miRNAs in recently established colon cancer patient-derived TICs. We were able to show that low oxygen concentrations consistently lead to the upregulation of miR-210 in different primary TIC-enriched cultures. Both stable overexpression of miR-210 and knockdown of its target gene ISCU resulted in enhanced TIC self-renewal. We could validate the tumorigenic properties of miR- 210 in in vivo experiments by showing that ectopic expression of miR-210 results in increased tumor incidence. Furthermore, enhanced miR-210 expression correlated with reduced TCA cycle activity and increased lactate levels. Importantly, by blocking lactate production via inhibition of LDHA, we could reverse the promoting effect of miR-210 on self-renewal capacity, thereby emphasizing the regulatory impact of the glycolytic phenotype on colon TIC properties. Finally, by assessing expression levels in patient tissue, we could demonstrate the clinical relevance of the miR-210/ISCU signaling axis for colorectal carcinoma. Taken together, our study highlights the importance of hypoxia-induced miR-210 in the regulation of colon cancer initiation.
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Affiliation(s)
- Pit Ullmann
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Komal Qureshi-Baig
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Fabien Rodriguez
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Aurélien Ginolhac
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | | | - Dominik Ternes
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Jil Weiler
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Karoline Gäbler
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Christelle Bahlawane
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Karsten Hiller
- Luxembourg Centre for Systems Biomedicine, L-4367 Belvaux, Luxembourg
| | - Serge Haan
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
| | - Elisabeth Letellier
- Life Sciences Research Unit, University of Luxembourg, L-4367 Belvaux, Luxembourg
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40
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The miR-196b miRNA inhibits the GATA6 intestinal transcription factor and is upregulated in colon cancer patients. Oncotarget 2018; 8:4747-4759. [PMID: 27902469 PMCID: PMC5354868 DOI: 10.18632/oncotarget.13580] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 11/11/2016] [Indexed: 12/22/2022] Open
Abstract
Objective To explore the possible misexpression of the microRNA miR-196b in colorectal cancer (CRC) and its role in controlling the expression of GATA6, a putative target gene crucial to intestinal cell homeostasis and tumorigenesis. Design The expression of miR-196b was analysed by qRT-PCR in surgical resection samples from a cohort of sporadic colon cancer patients. Manipulations of miR-196b expression were performed to demonstrate its inhibition of GATA6 protein levels. Results We found that miR-196b is significantly upregulated in pre-treatment surgical resection samples from a cohort of sporadic colon cancer patients. The upregulation of miR-196b correlates with less severe clinicopathological characteristics, such as early tumor stage and absence of lymph node metastases. We show that in CRC cells, miR-196b targets the mRNA of GATA6, a transcription factor involved in the homeostasis and differentiation of intestinal epithelial cells, and a positive regulator of the Wnt/β-catenin pathway. We moreover found that the increase of miR-196b correlates with a reduced GATA6 protein expression in colon cancer patients. Conclusion Our results establish miR-196b as a post-transcriptional inhibitor of GATA6 in CRC cells, implicating miR-196b function in gene regulatory pathways crucial to intestinal cell homeostasis and tumorigenesis. Our results furthermore suggest a role of miR-196b expression in CRC, as an antagonist of GATA6 function in tumor cells, thus providing the basis for a potential targeting strategy for the treatment of CRC.
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41
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Balbinot C, Armant O, Elarouci N, Marisa L, Martin E, De Clara E, Onea A, Deschamps J, Beck F, Freund JN, Duluc I. The Cdx2 homeobox gene suppresses intestinal tumorigenesis through non-cell-autonomous mechanisms. J Exp Med 2018; 215:911-926. [PMID: 29439001 PMCID: PMC5839756 DOI: 10.1084/jem.20170934] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 11/13/2017] [Accepted: 01/18/2018] [Indexed: 12/16/2022] Open
Abstract
Balbinot et al. show that intestinal epithelial cells depleted in the homeobox gene Cdx2 acquire an imperfect gastric-type metaplastic phenotype that, through changes in the microenvironment, induces the tumorigenic evolution of adjacent Cdx2-intact cells without themselves becoming cancerous. Developmental genes contribute to cancer, as reported for the homeobox gene Cdx2 playing a tumor suppressor role in the gut. In this study, we show that human colon cancers exhibiting the highest reduction in CDX2 expression belong to the serrated subtype with the worst evolution. In mice, mosaic knockout of Cdx2 in the adult intestinal epithelium induces the formation of imperfect gastric-type metaplastic lesions. The metaplastic knockout cells do not spontaneously become tumorigenic. However, they induce profound modifications of the microenvironment that facilitate the tumorigenic evolution of adjacent Cdx2-intact tumor-prone cells at the surface of the lesions through NF-κB activation, induction of inducible nitric oxide synthase, and stochastic loss of function of Apc. This study presents a novel paradigm in that metaplastic cells, generally considered as precancerous, can induce tumorigenesis from neighboring nonmetaplastic cells without themselves becoming cancerous. It unveils the novel property of non–cell-autonomous tumor suppressor gene for the Cdx2 gene in the gut.
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Affiliation(s)
- Camille Balbinot
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, IRFAC UMR-S1113, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Olivier Armant
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - Nabila Elarouci
- Cartes d'Identité des Tumeurs Program, Ligue Nationale Contre le Cancer, Paris, France
| | - Laetitia Marisa
- Cartes d'Identité des Tumeurs Program, Ligue Nationale Contre le Cancer, Paris, France
| | - Elisabeth Martin
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, IRFAC UMR-S1113, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Etienne De Clara
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, IRFAC UMR-S1113, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Alina Onea
- Département de Pathologie, Centre Hospitalier Universitaire de Strasbourg, Strasbourg, France
| | - Jacqueline Deschamps
- Developmental Biology and Stem Cell Research, Hubrecht Institute, Utrecht, Netherlands
| | - Felix Beck
- Barts and The London School of Medicine and Dentistry, London, England, UK
| | - Jean-Noël Freund
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, IRFAC UMR-S1113, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Isabelle Duluc
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, IRFAC UMR-S1113, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
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42
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Ferrebee CB, Li J, Haywood J, Pachura K, Robinson BS, Hinrichs BH, Jones RM, Rao A, Dawson PA. Organic Solute Transporter α-β Protects Ileal Enterocytes From Bile Acid-Induced Injury. Cell Mol Gastroenterol Hepatol 2018; 5:499-522. [PMID: 29930976 PMCID: PMC6009794 DOI: 10.1016/j.jcmgh.2018.01.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 01/05/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND & AIMS Ileal bile acid absorption is mediated by uptake via the apical sodium-dependent bile acid transporter (ASBT), and export via the basolateral heteromeric organic solute transporter α-β (OSTα-OSTβ). In this study, we investigated the cytotoxic effects of enterocyte bile acid stasis in Ostα-/- mice, including the temporal relationship between intestinal injury and initiation of the enterohepatic circulation of bile acids. METHODS Ileal tissue morphometry, histology, markers of cell proliferation, gene, and protein expression were analyzed in male and female wild-type and Ostα-/- mice at postnatal days 5, 10, 15, 20, and 30. Ostα-/-Asbt-/- mice were generated and analyzed. Bile acid activation of intestinal Nrf2-activated pathways was investigated in Drosophila. RESULTS As early as day 5, Ostα-/- mice showed significantly increased ileal weight per length, decreased villus height, and increased epithelial cell proliferation. This correlated with premature expression of the Asbt and induction of bile acid-activated farnesoid X receptor target genes in neonatal Ostα-/- mice. Expression of reduced nicotinamide adenine dinucleotide phosphate oxidase-1 and Nrf2-anti-oxidant responsive genes were increased significantly in neonatal Ostα-/- mice at these postnatal time points. Bile acids also activated Nrf2 in Drosophila enterocytes and enterocyte-specific knockdown of Nrf2 increased sensitivity of flies to bile acid-induced toxicity. Inactivation of the Asbt prevented the changes in ileal morphology and induction of anti-oxidant response genes in Ostα-/- mice. CONCLUSIONS Early in postnatal development, loss of Ostα leads to bile acid accumulation, oxidative stress, and a restitution response in ileum. In addition to its essential role in maintaining bile acid homeostasis, Ostα-Ostβ functions to protect the ileal epithelium against bile acid-induced injury. NCBI Gene Expression Omnibus: GSE99579.
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Key Words
- ARE, anti-oxidant response element
- Asbt, apical sodium-dependent bile acid transporter
- CDCA, chenodeoxycholic acid
- Drosophila
- FGF, fibroblast growth factor
- FXR, farnesoid X receptor
- GAPDH, glyceraldehyde-3-phosphate dehydrogenase
- GFP, green fluorescence protein
- GSH, reduced glutathione
- GSSG, oxidized glutathione
- Ibabp, ileal bile acid binding protein
- Ileum
- NEC, necrotizing enterocolitis
- Neonate
- Nox, reduced nicotinamide adenine dinucleotide phosphate oxidase
- Nrf2, nuclear factor (erythroid-derived 2)-like 2
- Nuclear Factor Erythroid-Derived 2-Like 2
- Ost, organic solute transporter
- PBS, phosphate-buffered saline
- ROS, reactive oxygen species
- Reactive Oxygen Species
- TNF, tumor necrosis factor
- TUNEL, terminal deoxynucleotidyl transferase–mediated deoxyuridine triphosphate nick-end labeling
- WT, wild type
- cRNA, complementary RNA
- mRNA, messenger RNA
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Affiliation(s)
- Courtney B. Ferrebee
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Jianing Li
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | - Jamie Haywood
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Kimberly Pachura
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | | | | | - Rheinallt M. Jones
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | - Anuradha Rao
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | - Paul A. Dawson
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
- Children’s Healthcare of Atlanta, Atlanta, Georgia
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Balbinot C, Vanier M, Armant O, Nair A, Penichon J, Soret C, Martin E, Saandi T, Reimund JM, Deschamps J, Beck F, Domon-Dell C, Gross I, Duluc I, Freund JN. Fine-tuning and autoregulation of the intestinal determinant and tumor suppressor homeobox gene CDX2 by alternative splicing. Cell Death Differ 2017; 24:2173-2186. [PMID: 28862703 DOI: 10.1038/cdd.2017.140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/23/2017] [Accepted: 07/25/2017] [Indexed: 12/20/2022] Open
Abstract
On the basis of phylogenetic analyses, we uncovered a variant of the CDX2 homeobox gene, a major regulator of the development and homeostasis of the gut epithelium, also involved in cancer. This variant, miniCDX2, is generated by alternative splicing coupled to alternative translation initiation, and contains the DNA-binding homeodomain but is devoid of transactivation domain. It is predominantly expressed in crypt cells, whereas the CDX2 protein is present in crypt cells but also in differentiated villous cells. Functional studies revealed a dominant-negative effect exerted by miniCDX2 on the transcriptional activity of CDX2, and conversely similar effects regarding several transcription-independent functions of CDX2. In addition, a regulatory role played by the CDX2 and miniCDX2 homeoproteins on their pre-mRNA splicing is displayed, through interactions with splicing factors. Overexpression of miniCDX2 in the duodenal Brunner glands leads to the expansion of the territory of these glands and ultimately to brunneroma. As a whole, this study characterized a new and original variant of the CDX2 homeobox gene. The production of this variant represents not only a novel level of regulation of this gene, but also a novel way to fine-tune its biological activity through the versatile functions exerted by the truncated variant compared to the full-length homeoprotein. This study highlights the relevance of generating protein diversity through alternative splicing in the gut and its diseases.
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Affiliation(s)
- Camille Balbinot
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Marie Vanier
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Olivier Armant
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Postfach 3640, Karlsruhe 76021, Germany
| | - Asmaa Nair
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Julien Penichon
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Christine Soret
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Elisabeth Martin
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Thoueiba Saandi
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Jean-Marie Reimund
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Jacqueline Deschamps
- Hubrecht Institute, Developmental Biology and Stem Cell Research, Uppsalalaan 8, Utrecht 3584 CT, The Netherlands
| | - Felix Beck
- Barts and The London School of Medicine and Dentistry, London E1 2ES, UK
| | - Claire Domon-Dell
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Isabelle Gross
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Isabelle Duluc
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
| | - Jean-Noël Freund
- Université de Strasbourg, Inserm, UMR_S1113, FMTS, Strasbourg 67000, France
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Chatterjee I, Kumar A, Castilla-Madrigal RM, Pellon-Cardenas O, Gill RK, Alrefai WA, Borthakur A, Verzi M, Dudeja PK. CDX2 upregulates SLC26A3 gene expression in intestinal epithelial cells. Am J Physiol Gastrointest Liver Physiol 2017; 313:G256-G264. [PMID: 28572085 PMCID: PMC5625132 DOI: 10.1152/ajpgi.00108.2017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/26/2017] [Accepted: 05/26/2017] [Indexed: 01/31/2023]
Abstract
SLC26A3 [downregulated in adenoma (DRA)] plays a key role in mammalian intestinal NaCl absorption, in that it mediates apical membrane Cl-/[Formula: see text] exchange. DRA function and expression are significantly decreased in diarrhea associated with inflammatory bowel disease. DRA is also considered to be a marker of cellular differentiation and is predominantly expressed in differentiated epithelial cells. Caudal-type homeobox protein-2 (CDX2) is known to regulate genes involved in intestinal epithelial differentiation and proliferation. Reduced expression of both DRA and CDX2 in intestinal inflammation prompted us to study whether the DRA gene is directly regulated by CDX2. Our initial studies utilizing CDX2 knockout (CDX2fV/fV;Cre+) mice showed a marked reduction in DRA mRNA and protein levels in proximal and distal colon. In silico analysis of the DRA promoter showed two consensus sites for CDX2 binding. Therefore, we utilized Caco-2 cells as an in vitro model to examine if DRA is a direct target of CDX2 regulation. siRNA-mediated silencing of CDX2 in Caco-2 cells resulted in a marked (~50%) decrease in DRA mRNA and protein levels, whereas ectopic overexpression of CDX2 upregulated DRA expression and also stimulated DRA promoter activity, suggesting transcriptional regulation. Electrophoretic mobility shift and chromatin immunoprecipitation assays demonstrated direct binding of CDX2 to one of the two putative CDX2 binding sites in the DRA promoter (+645/+663). In summary, our studies, for the first time, demonstrate transcriptional regulation of DRA expression by CDX2, implying that reduced expression of DRA in inflammatory bowel disease-associated diarrhea may, in part, be due to downregulation of CDX2 in the inflamed mucosa.NEW & NOTEWORTHY SLC26A3 [downregulated in adenoma (DRA)] mediates intestinal luminal NaCl absorption and is downregulated in inflammatory bowel disease-associated diarrhea. Since both DRA and caudal-type homeobox protein-2 (CDX2) are reduced in intestinal inflammation and the DRA promoter harbors CDX2 binding sites, we examined whether the DRA gene is regulated by CDX2. Our studies, for the first time, demonstrate transcriptional regulation of DRA expression by CDX2 via direct binding to the DRA promoter, suggesting that reduced expression of DRA in inflammatory bowel disease-associated diarrhea could, in part, be attributed to downregulation of CDX2.
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Affiliation(s)
- Ishita Chatterjee
- 2Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois;
| | - Anoop Kumar
- 2Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois;
| | | | | | - Ravinder K. Gill
- 2Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois;
| | - Waddah A. Alrefai
- 1Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois; ,2Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois;
| | - Alip Borthakur
- 2Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois;
| | - Michael Verzi
- 4Department of Genetics, Rutgers University, Piscataway, New Jersey
| | - Pradeep K. Dudeja
- 1Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois; ,2Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois;
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45
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Chin AM, Hill DR, Aurora M, Spence JR. Morphogenesis and maturation of the embryonic and postnatal intestine. Semin Cell Dev Biol 2017; 66:81-93. [PMID: 28161556 DOI: 10.1016/j.semcdb.2017.01.011] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 01/28/2017] [Accepted: 01/30/2017] [Indexed: 12/12/2022]
Abstract
The intestine is a vital organ responsible for nutrient absorption, bile and waste excretion, and a major site of host immunity. In order to keep up with daily demands, the intestine has evolved a mechanism to expand the absorptive surface area by undergoing a morphogenetic process to generate finger-like units called villi. These villi house specialized cell types critical for both absorbing nutrients from food, and for protecting the host from commensal and pathogenic microbes present in the adult gut. In this review, we will discuss mechanisms that coordinate intestinal development, growth, and maturation of the small intestine, starting from the formation of the early gut tube, through villus morphogenesis and into early postnatal life when the intestine must adapt to the acquisition of nutrients through food intake, and to interactions with microbes.
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Affiliation(s)
- Alana M Chin
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, United States
| | - David R Hill
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Megan Aurora
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Jason R Spence
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, United States; Department of Internal Medicine, Division of Gastroenterology, University of Michigan Medical School, Ann Arbor, MI, United States; Center for Organogenesis, University of Michigan Medical School, Ann Arbor, MI, United States.
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46
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Nguyen TT, Savory JGA, Brooke-Bisschop T, Ringuette R, Foley T, Hess BL, Mulatz KJ, Trinkle-Mulcahy L, Lohnes D. Cdx2 Regulates Gene Expression through Recruitment of Brg1-associated Switch-Sucrose Non-fermentable (SWI-SNF) Chromatin Remodeling Activity. J Biol Chem 2017; 292:3389-3399. [PMID: 28082674 DOI: 10.1074/jbc.m116.752774] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 01/10/2017] [Indexed: 12/22/2022] Open
Abstract
The packaging of genomic DNA into nucleosomes creates a barrier to transcription that can be relieved through ATP-dependent chromatin remodeling via complexes such as the switch-sucrose non-fermentable (SWI-SNF) chromatin remodeling complex. The SWI-SNF complex remodels chromatin via conformational or positional changes of nucleosomes, thereby altering the access of transcriptional machinery to target genes. The SWI-SNF complex has limited ability to bind to sequence-specific elements, and, therefore, its recruitment to target loci is believed to require interaction with DNA-associated transcription factors. The Cdx family of homeodomain transcript ion factors (Cdx1, Cdx2, and Cdx4) are essential for a number of developmental programs in the mouse. Cdx1 and Cdx2 also regulate intestinal homeostasis throughout life. Although a number of Cdx target genes have been identified, the basis by which Cdx members impact their transcription is poorly understood. We have found that Cdx members interact with the SWI-SNF complex and make direct contact with Brg1, a catalytic member of SWI-SNF. Both Cdx2 and Brg1 co-occupy a number of Cdx target genes, and both factors are necessary for transcriptional regulation of such targets. Finally, Cdx2 and Brg1 occupancy occurs coincident with chromatin remodeling at some of these loci. Taken together, our findings suggest that Cdx transcription factors regulate target gene expression, in part, through recruitment of Brg1-associated SWI-SNF chromatin remodeling activity.
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Affiliation(s)
- Thinh T Nguyen
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Joanne G A Savory
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Travis Brooke-Bisschop
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Randy Ringuette
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Tanya Foley
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Bradley L Hess
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Kirk J Mulatz
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Laura Trinkle-Mulcahy
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - David Lohnes
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada.
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47
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Essential roles for Cdx in murine primitive hematopoiesis. Dev Biol 2017; 422:115-124. [PMID: 28065741 DOI: 10.1016/j.ydbio.2017.01.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 01/03/2017] [Accepted: 01/04/2017] [Indexed: 11/24/2022]
Abstract
The Cdx transcription factors play essential roles in primitive hematopoiesis in the zebrafish where they exert their effects, in part, through regulation of hox genes. Defects in hematopoiesis have also been reported in Cdx mutant murine embryonic stem cell models, however, to date no mouse model reflecting the zebrafish Cdx mutant hematopoietic phenotype has been described. This is likely due, in part, to functional redundancy among Cdx members and the early lethality of Cdx2 null mutants. To circumvent these limitations, we used Cre-mediated conditional deletion to assess the impact of concomitant loss of Cdx1 and Cdx2 on murine primitive hematopoiesis. We found that Cdx1/Cdx2 double mutants exhibited defects in primitive hematopoiesis and yolk sac vasculature concomitant with reduced expression of several genes encoding hematopoietic transcription factors including Scl/Tal1. Chromatin immunoprecipitation analysis revealed that Scl was occupied by Cdx2 in vivo, and Cdx mutant hematopoietic yolk sac differentiation defects could be rescued by expression of exogenous Scl. These findings demonstrate critical roles for Cdx members in murine primitive hematopoiesis upstream of Scl.
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48
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Jørgensen S, Coskun M, Homburg KM, Pedersen OBV, Troelsen JT. HOXB4 Gene Expression Is Regulated by CDX2 in Intestinal Epithelial Cells. PLoS One 2016; 11:e0164555. [PMID: 27755609 PMCID: PMC5068786 DOI: 10.1371/journal.pone.0164555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/06/2016] [Indexed: 01/07/2023] Open
Abstract
The mammalian Caudal-related homeobox transcription factor 2 (CDX2) plays a key role in the homeobox regulatory network and is essential in regulating the expression of several homeobox (HOX) genes during embryonic development, particularly in the gut. Genome-wide CDX2 chromatin immunoprecipitation analysis and expression data from Caco2 cells also suggests a role for CDX2 in the regulation of HOXB4 gene expression in the intestinal epithelium. Thus, the aim of this study was to investigate whether HOXB4 gene expression is regulated by CDX2 in the intestinal epithelium. We demonstrated binding of CDX2 to four different CDX2 binding sites in an enhancer region located upstream of the HOXB4 transcription start site. Mutations in the CDX2 binding sites reduced HOXB4 gene activity, and knock down of endogenous CDX2 expression by shRNA reduced HOXB4 gene expression. This is the first report demonstrating the CDX2 regulation of HOXB4 gene expression in the developed intestinal epithelium, indicating a possible role for HOXB4 in intestinal homeostasis.
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Affiliation(s)
- Steffen Jørgensen
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
- Department of Clinical Immunology, Naestved Hospital, Naestved, Region Zealand, Denmark
| | - Mehmet Coskun
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | - Ole B. V. Pedersen
- Department of Clinical Immunology, Naestved Hospital, Naestved, Region Zealand, Denmark
| | - Jesper T. Troelsen
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
- * E-mail:
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49
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Enhancer decommissioning by Snail1-induced competitive displacement of TCF7L2 and down-regulation of transcriptional activators results in EPHB2 silencing. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1859:1353-1367. [PMID: 27504909 DOI: 10.1016/j.bbagrm.2016.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 07/25/2016] [Accepted: 08/04/2016] [Indexed: 12/20/2022]
Abstract
Transcriptional silencing is a major cause for the inactivation of tumor suppressor genes, however, the underlying mechanisms are only poorly understood. The EPHB2 gene encodes a receptor tyrosine kinase that controls epithelial cell migration and allocation in intestinal crypts. Through its ability to restrict cell spreading, EPHB2 functions as a tumor suppressor in colorectal cancer whose expression is frequently lost as tumors progress to the carcinoma stage. Previously we reported that EPHB2 expression depends on a transcriptional enhancer whose activity is diminished in EPHB2 non-expressing cells. Here we investigated the mechanisms that lead to EPHB2 enhancer inactivation. We show that expression of EPHB2 and SNAIL1 - an inducer of epithelial-mesenchymal transition (EMT) - is anti-correlated in colorectal cancer cell lines and tumors. In a cellular model of Snail1-induced EMT, we observe that features of active chromatin at the EPHB2 enhancer are diminished upon expression of murine Snail1. We identify the transcription factors FOXA1, MYB, CDX2 and TCF7L2 as EPHB2 enhancer factors and demonstrate that Snail1 indirectly inactivates the EPHB2 enhancer by downregulation of FOXA1 and MYB. In addition, Snail1 induces the expression of Lymphoid enhancer factor 1 (LEF1) which competitively displaces TCF7L2 from the EPHB2 enhancer. In contrast to TCF7L2, however, LEF1 appears to repress the EPHB2 enhancer. Our findings underscore the importance of transcriptional enhancers for gene regulation under physiological and pathological conditions and show that SNAIL1 employs a combinatorial mechanism to inactivate the EPHB2 enhancer based on activator deprivation and competitive displacement of transcription factors.
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50
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Walsh MF, Hermann R, Lee JH, Chaturvedi L, Basson MD. Schlafen 3 Mediates the Differentiating Effects of Cdx2 in Rat IEC-Cdx2L1 Enterocytes. J INVEST SURG 2016; 28:202-7. [PMID: 26268420 DOI: 10.3109/08941939.2015.1005780] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
AIM Mature, differentiated enterocytes are essential for normal gut function and critical to recovery from pathological conditions. Little is known about the factors that regulate intestinal epithelial cell differentiation in the adult intestine. The transcription factor, Cdx2, involved in enterocytic differentiation, remains expressed in the adult. Since we have implicated Slfn3 in differentiation in vivo and in vitro, we examined whether it also mediated differentiation in the IEC-Cdx2-L1 cell model of differentiation. MATERIALS AND METHODS IEC-Cdx2-L1 cells, permanently transfected with Cdx2 under the control of isopropyl-β-D-thiogalactoside (IPTG), were stimulated to differentiate by 16-day exposure to IPTG. Transcript levels of Cdx2, Slfn 3, and villin were determined by quantitative reverse transcriptase-polymerase chain reaction of mRNA isolated from IPTG-treated and control cells. Slfn3 expression was lowered with specific siRNA to investigate the role of Slfn3 in Cdx2-driven villin expression in IPTG-differentiated cells. RESULTS Slfn3 and villin expression were significantly greater in IPTG-treated cells. Slfn3 siRNA lowered Slfn3 expression and abolished the IPTG-induced rise in villin expression (p < .05 by ANOVA); Cdx2 expression was unaffected by Slfn3 siRNA. DISCUSSION The data indicate that the presence of Slfn3 is required for Cdx2 to induce villin expression, and thus differentiation. However, Slfn3 must also promote differentiation of Cdx2 independently since IEC-6 cells that do not normally express Cdx2 can be differentiated by a variety of Slfn3-dependent mechanisms.
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Affiliation(s)
- Mary F Walsh
- Department of Surgery, College of Human Medicine, Michigan State University, East Lansing, Michigan, USA
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