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Sanketi BD, Mantri M, Huang L, Tavallaei MA, Hu S, Wang MFZ, De Vlaminck I, Kurpios NA. Villus myofibroblasts are developmental and adult progenitors of mammalian gut lymphatic musculature. Dev Cell 2024; 59:1159-1174.e5. [PMID: 38537630 PMCID: PMC11078612 DOI: 10.1016/j.devcel.2024.03.005] [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: 10/27/2023] [Revised: 01/26/2024] [Accepted: 03/01/2024] [Indexed: 05/09/2024]
Abstract
Inside the finger-like intestinal projections called villi, strands of smooth muscle cells contract to propel absorbed dietary fats through the adjacent lymphatic capillary, the lacteal, sending fats into the systemic blood circulation for energy production. Despite this vital function, mechanisms of formation, assembly alongside lacteals, and maintenance of villus smooth muscle are unknown. By combining single-cell RNA sequencing and quantitative lineage tracing of the mouse intestine, we identified a local hierarchy of subepithelial fibroblast progenitors that differentiate into mature smooth muscle fibers via intermediate contractile myofibroblasts. This continuum persists as the major mechanism for villus musculature renewal throughout adult life. The NOTCH3-DLL4 signaling axis governs the assembly of smooth muscle fibers alongside their adjacent lacteals and is required for fat absorption. Our studies identify the ontogeny and maintenance of a poorly defined class of intestinal smooth muscle, with implications for accelerated repair and recovery of digestive function following injury.
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Affiliation(s)
- Bhargav D Sanketi
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Madhav Mantri
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Liqing Huang
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Mohammad A Tavallaei
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Shing Hu
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Michael F Z Wang
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Iwijn De Vlaminck
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA.
| | - Natasza A Kurpios
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
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2
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Dershowitz LB, Kaltschmidt JA. Enteric Nervous System Striped Patterning and Disease: Unexplored Pathophysiology. Cell Mol Gastroenterol Hepatol 2024; 18:101332. [PMID: 38479486 PMCID: PMC11176954 DOI: 10.1016/j.jcmgh.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/08/2024] [Accepted: 03/08/2024] [Indexed: 04/04/2024]
Abstract
The enteric nervous system (ENS) controls gastrointestinal (GI) motility, and defects in ENS development underlie pediatric GI motility disorders. In disorders such as Hirschsprung's disease (HSCR), pediatric intestinal pseudo-obstruction (PIPO), and intestinal neuronal dysplasia type B (INDB), ENS structure is altered with noted decreased neuronal density in HSCR and reports of increased neuronal density in PIPO and INDB. The developmental origin of these structural deficits is not fully understood. Here, we review the current understanding of ENS development and pediatric GI motility disorders incorporating new data on ENS structure. In particular, emerging evidence demonstrates that enteric neurons are patterned into circumferential stripes along the longitudinal axis of the intestine during mouse and human development. This novel understanding of ENS structure proposes new questions about the pathophysiology of pediatric GI motility disorders. If the ENS is organized into stripes, could the observed changes in enteric neuron density in HSCR, PIPO, and INDB represent differences in the distribution of enteric neuronal stripes? We review mechanisms of striped patterning from other biological systems and propose how defects in striped ENS patterning could explain structural deficits observed in pediatric GI motility disorders.
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Affiliation(s)
- Lori B Dershowitz
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California; Wu Tsai Neurosciences Institute, Stanford University, Stanford, California
| | - Julia A Kaltschmidt
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California; Wu Tsai Neurosciences Institute, Stanford University, Stanford, California.
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3
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Sanketi BD, Mantri M, Huang L, Tavallaei MA, Hu S, Wang MFZ, De Vlaminck I, Kurpios NA. Origin and adult renewal of the gut lacteal musculature from villus myofibroblasts. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.01.19.523242. [PMID: 36712064 PMCID: PMC9882374 DOI: 10.1101/2023.01.19.523242] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Intestinal smooth muscles are the workhorse of the digestive system. Inside the millions of finger-like intestinal projections called villi, strands of smooth muscle cells contract to propel absorbed dietary fats through the adjacent lymphatic vessel, called the lacteal, sending fats into the blood circulation for energy production. Despite this vital function, how villus smooth muscles form, how they assemble alongside lacteals, and how they repair throughout life remain unknown. Here we combine single-cell RNA sequencing of the mouse intestine with quantitative lineage tracing to reveal the mechanisms of formation and differentiation of villus smooth muscle cells. Within the highly regenerative villus, we uncover a local hierarchy of subepithelial fibroblast progenitors that progress to become mature smooth muscle fibers, via an intermediate contractile myofibroblast-like phenotype. This continuum persists in the adult intestine as the major source of renewal of villus smooth muscle cells during adult life. We further found that the NOTCH3-DLL4 signaling axis governs the assembly of villus smooth muscles alongside their adjacent lacteal, and we show that this is necessary for gut absorptive function. Overall, our data shed light on the genesis of a poorly defined class of intestinal smooth muscle and pave the way for new opportunities to accelerate recovery of digestive function by stimulating muscle repair.
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Affiliation(s)
- Bhargav D. Sanketi
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University; Ithaca, NY 14853, USA
| | - Madhav Mantri
- Department of Biomedical Engineering, Cornell University; Ithaca, NY 14850, USA
| | - Liqing Huang
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University; Ithaca, NY 14853, USA
| | - Mohammad A. Tavallaei
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University; Ithaca, NY 14853, USA
| | - Shing Hu
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University; Ithaca, NY 14853, USA
| | - Michael F. Z. Wang
- Department of Biomedical Engineering, Cornell University; Ithaca, NY 14850, USA
| | - Iwijn De Vlaminck
- Department of Biomedical Engineering, Cornell University; Ithaca, NY 14850, USA
| | - Natasza A. Kurpios
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University; Ithaca, NY 14853, USA
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4
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Crow KD, Sadakian A, Kaslly NA. The role of the 5' HoxA genes in the development of the hindgut, vent, and a novel sphincter in a derived teleost (bluebanded goby, Lythrypnus dalli). JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2023; 340:518-530. [PMID: 32779333 DOI: 10.1002/jez.b.22982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 05/05/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Unique expression patterns of the 5' HoxA genes are associated with the evolution and development of novel features including claspers in cartilaginous fishes, modified pectoral fins in batoids, and the yolk sac extension in Cypriniformes. Here, we demonstrate a role for HoxA11a and HoxA13a in demarcating the hindgut in fishes of the family Gobiidae, including a novel sphincter called the intestinal rectal sphincter (IRS). Disruption of 5' HoxA expression, via manipulation of retinoic acid signaling, results in failure of the IRS and/or vent to develop. Furthermore, exposure to HoxA disruptors alters 5' HoxA expression, in association with developmental phenotypes, demonstrating a functional link between 5' HoxA expression and development of a novel feature in the bluebanded goby, Lythrypnus dalli.
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Affiliation(s)
- Karen D Crow
- Department of Biology, San Francisco State University, San Francisco, California
| | - Ara Sadakian
- Department of Biology, San Francisco State University, San Francisco, California
| | - Noelle A Kaslly
- Department of Biology, San Francisco State University, San Francisco, California
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5
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Nikaido M, Shirai A, Mizumaki Y, Shigenobu S, Ueno N, Hatta K. Intestinal expression patterns of transcription factors and markers for interstitial cells in the larval zebrafish. Dev Growth Differ 2023; 65:418-428. [PMID: 37452633 DOI: 10.1111/dgd.12878] [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: 04/11/2023] [Revised: 06/26/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
For the digestion of food, it is important for the gut to be differentiated regionally and to have proper motor control. However, the number of transcription factors that regulate its development is still limited. Meanwhile, the interstitial cells of the gastrointestinal (GI) tract are necessary for intestinal motility in addition to the enteric nervous system. There are anoctamine1 (Ano1)-positive and platelet-derived growth factor receptor α (Pdgfra)-positive interstitial cells in mammal, but Pdgfra-positive cells have not been reported in the zebrafish. To identify new transcription factors involved in GI tract development, we used RNA sequencing comparing between larval and adult gut. We isolated 40 transcription factors that were more highly expressed in the larval gut. We demonstrated expression patterns of the 13 genes, 7 of which were newly found to be expressed in the zebrafish larval gut. Six of the 13 genes encode nuclear receptors. The osr2 is expressed in the anterior part, while foxP4 in its distal part. Also, we reported the expression pattern of pdgfra for the first time in the larval zebrafish gut. Our data provide fundamental knowledge for studying vertebrate gut regionalization and motility by live imaging using zebrafish.
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Affiliation(s)
| | - Ayaka Shirai
- School of Science, University of Hyogo, Ako-gun, Japan
| | | | - Shuji Shigenobu
- Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki, Japan
| | - Naoto Ueno
- Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki, Japan
- Unit of Quantitative and Imaging Biology, International Research Collaboration Center, National Institute of Natural Sciences, Okazaki, Japan
| | - Kohei Hatta
- Graduate School of Science, University of Hyogo, Ako-gun, Japan
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6
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Janmaat VT, Nesteruk K, Spaander MCW, Verhaar AP, Yu B, Silva RA, Phillips WA, Magierowski M, van de Winkel A, Stadler HS, Sandoval-Guzmán T, van der Laan LJW, Kuipers EJ, Smits R, Bruno MJ, Fuhler GM, Clemons NJ, Peppelenbosch MP. HOXA13 in etiology and oncogenic potential of Barrett's esophagus. Nat Commun 2021; 12:3354. [PMID: 34099670 PMCID: PMC8184780 DOI: 10.1038/s41467-021-23641-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 05/06/2021] [Indexed: 12/13/2022] Open
Abstract
Barrett's esophagus in gastrointestinal reflux patients constitutes a columnar epithelium with distal characteristics, prone to progress to esophageal adenocarcinoma. HOX genes are known mediators of position-dependent morphology. Here we show HOX collinearity in the adult gut while Barrett's esophagus shows high HOXA13 expression in stem cells and their progeny. HOXA13 overexpression appears sufficient to explain both the phenotype (through downregulation of the epidermal differentiation complex) and the oncogenic potential of Barrett's esophagus. Intriguingly, employing a mouse model that contains a reporter coupled to the HOXA13 promotor we identify single HOXA13-positive cells distally from the physiological esophagus, which is mirrored in human physiology, but increased in Barrett's esophagus. Additionally, we observe that HOXA13 expression confers a competitive advantage to cells. We thus propose that Barrett's esophagus and associated esophageal adenocarcinoma is the consequence of expansion of this gastro-esophageal HOXA13-expressing compartment following epithelial injury.
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Affiliation(s)
- Vincent T Janmaat
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Kateryna Nesteruk
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Manon C W Spaander
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Auke P Verhaar
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Bingting Yu
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rodrigo A Silva
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Wayne A Phillips
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- Department of Surgery (St. Vincent's Hospital), The University of Melbourne, Melbourne, VIC, Australia
| | - Marcin Magierowski
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, Cracow, Poland
| | - Anouk van de Winkel
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - H Scott Stadler
- Department of Skeletal Biology, Shriners Hospital for Children, Portland, OR, USA
| | | | - Luc J W van der Laan
- Department of Surgery, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ernst J Kuipers
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ron Smits
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marco J Bruno
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Gwenny M Fuhler
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Nicholas J Clemons
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands.
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7
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Lai KKY, Hu X, Chosa K, Nguyen C, Lin DP, Lai KK, Kato N, Higuchi Y, Highlander SK, Melendez E, Eriguchi Y, Fueger PT, Ouellette AJ, Chimge NO, Ono M, Kahn M. p300 Serine 89: A Critical Signaling Integrator and Its Effects on Intestinal Homeostasis and Repair. Cancers (Basel) 2021; 13:cancers13061288. [PMID: 33799418 PMCID: PMC7999107 DOI: 10.3390/cancers13061288] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/07/2021] [Accepted: 03/10/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Given their high degree of identity and even greater similarity at the amino acid level, Kat3 coactivators, CBP (Kat3A) and p300 (Kat3B), have long been considered redundant. We describe the generation of novel p300 S89A knock-in mice carrying a single site directed amino acid mutation in p300, changing the highly evolutionarily conserved serine 89 to alanine, thus enhancing Wnt/CBP/catenin signaling (at the expense of Wnt/p300/catenin signaling). p300 S89A knock-in mice exhibit multiple organ system, immunologic and metabolic differences, compared with their wild type counterparts. In particular, these p300 S89A knock-in mice are highly sensitive to intestinal injury resulting in colitis which is known to significantly predispose to colorectal cancer. Our results highlight the critical role of this region in p300 as a signaling nexus and provide further evidence that p300 and CBP are non-redundant, playing definite and distinctive roles in development and disease. Abstract Differential usage of Kat3 coactivators, CBP and p300, by β-catenin is a fundamental regulatory mechanism in stem cell maintenance and initiation of differentiation and repair. Based upon our earlier pharmacologic studies, p300 serine 89 (S89) is critical for controlling differential coactivator usage by β-catenin via post-translational phosphorylation in stem/progenitor populations, and appears to be a target for a number of kinase cascades. To further investigate mechanisms of signal integration effected by this domain, we generated p300 S89A knock-in mice. We show that S89A mice are extremely sensitive to intestinal insult resulting in colitis, which is known to significantly increase the risk of developing colorectal cancer. We demonstrate cell intrinsic differences, and microbiome compositional differences and differential immune responses, in intestine of S89A versus wild type mice. Genomic and proteomic analyses reveal pathway differences, including lipid metabolism, oxidative stress response, mitochondrial function and oxidative phosphorylation. The diverse effects on fundamental processes including epithelial differentiation, metabolism, immune response and microbiome colonization, all brought about by a single amino acid modification S89A, highlights the critical role of this region in p300 as a signaling nexus and the rationale for conservation of this residue and surrounding region for hundreds of million years of vertebrate evolution.
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Affiliation(s)
- Keane K. Y. Lai
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
- City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA;
| | - Xiaohui Hu
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - Keisuke Chosa
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - Cu Nguyen
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - David P. Lin
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - Keith K. Lai
- Department of Anatomic Pathology, Cleveland Clinic, Cleveland, OH 44195, USA;
| | - Nobuo Kato
- The Institute of Scientific and Industrial Research, Osaka University, Osaka 567-0047, Japan;
| | - Yusuke Higuchi
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - Sarah K. Highlander
- Clinical Microbiome Service Center and Pathogen and Microbiome Division, Translational Genomics Research Institute, Flagstaff, AZ 86005, USA;
| | - Elizabeth Melendez
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - Yoshihiro Eriguchi
- Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (Y.E.); (A.J.O.)
| | - Patrick T. Fueger
- City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA;
- Department of Molecular and Cellular Endocrinology, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Andre J. Ouellette
- Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; (Y.E.); (A.J.O.)
- USC Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Nyam-Osor Chimge
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
| | - Masaya Ono
- Department of Clinical Proteomics, National Cancer Center Research Institute, Tokyo 104-0045, Japan;
| | - Michael Kahn
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA; (K.K.Y.L.); (X.H.); (K.C.); (C.N.); (D.P.L.); (Y.H.); (E.M.); (N.-O.C.)
- City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA;
- USC Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Department of Biochemistry and Molecular Biology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Correspondence:
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8
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Hung YH, Huang S, Dame MK, Yu Q, Yu QC, Zeng YA, Camp JG, Spence JR, Sethupathy P. Chromatin regulatory dynamics of early human small intestinal development using a directed differentiation model. Nucleic Acids Res 2021; 49:726-744. [PMID: 33406262 PMCID: PMC7826262 DOI: 10.1093/nar/gkaa1204] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/20/2020] [Accepted: 12/01/2020] [Indexed: 02/06/2023] Open
Abstract
The establishment of the small intestinal (SI) lineage during human embryogenesis ensures functional integrity of the intestine after birth. The chromatin dynamics that drive SI lineage formation and regional patterning in humans are essentially unknown. To fill this knowledge void, we apply a cutting-edge genomic technology to a state-of-the-art human model of early SI development. Specifically, we leverage chromatin run-on sequencing (ChRO-seq) to define the landscape of active promoters, enhancers and gene bodies across distinct stages of directed differentiation of human pluripotent stem cells into SI spheroids with regional specification. Through comprehensive ChRO-seq analysis we identify candidate stage-specific chromatin activity states, novel markers and enhancer hotspots during the directed differentiation. Moreover, we propose a detailed transcriptional network associated with SI lineage formation or regional patterning. Our ChRO-seq analyses uncover a previously undescribed pattern of enhancer activity and transcription at HOX gene loci underlying SI regional patterning. We also validated this unique HOX dynamics by the analysis of single cell RNA-seq data from human fetal SI. Overall, the results lead to a new proposed working model for the regulatory underpinnings of human SI development, thereby adding a novel dimension to the literature that has relied almost exclusively on non-human models.
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Affiliation(s)
- Yu-Han Hung
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Sha Huang
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Michael K Dame
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Qianhui Yu
- Institute of Molecular and Clinical Ophthalmology Basal, Basel 4056, Switzerland
| | - Qing C Yu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yi A Zeng
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - J Gray Camp
- Institute of Molecular and Clinical Ophthalmology Basal, Basel 4056, Switzerland.,Department of Ophthalmology, University of Basel, Basel 4001, Switzerland
| | - Jason R Spence
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Praveen Sethupathy
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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9
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Cannon-Albright LA, Stevens J, Teerlink CC, Agarwal N. The HOXB13 p.Gly84Glu variant observed in an extended five generation high-risk prostate cancer pedigree supports risk association for multiple cancer sites. Cancer Epidemiol 2020; 69:101834. [PMID: 33099213 DOI: 10.1016/j.canep.2020.101834] [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: 06/19/2020] [Revised: 09/22/2020] [Accepted: 10/05/2020] [Indexed: 12/30/2022]
Abstract
HOXB13 p.Gly84Glu is recognized as a rare variant associated with increased risk for prostate cancer; risk association for other cancers is uncertain. This HOXB13 variant was originally reported in several 3-generation prostate cancer pedigrees and has been reported to be associated with increased risk for bladder and colorectal cancer and leukemia in GWAS. A HOXB13 pGly84Glu variant carrier was identified in a set of Utah individuals born more than 100 years ago who were members of high-risk cancer pedigrees. The proband carrier was diagnosed with colon cancer and is a member of a high-risk prostate cancer pedigree. The HOXB13 pGLY84Glu variant was assayed in other sampled relatives in the pedigree and was observed to segregate in relatives of the proband carrier in the extended pedigree; this pedigree showed significant excess of prostate cancer, cervical cancer, leukemia, colorectal cancer, and gastric cancer among descendants. Multiple additional variant carriers were identified, diagnosed with prostate, bladder, and colon cancers in the 5-generation high-risk cancer pedigree. This study shows the power and efficiency of a biorepository of samples with known genealogy from extended high-risk pedigrees for definition of cancer-associated risks. Association of HOXB13 p.Gly84Glu with risk of colon and bladder cancers in this extended pedigree confirms previous reports for risk association for both cancers.
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Affiliation(s)
- Lisa A Cannon-Albright
- Genetic Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84108, United States; Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, United States; George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, United States.
| | - Jeff Stevens
- Genetic Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84108, United States
| | - Craig C Teerlink
- Genetic Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84108, United States
| | - Neeraj Agarwal
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, United States; Oncology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84108, United States
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10
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Roux M, Bouchard M, Kmita M. Multifaceted Hoxa13 function in urogenital development underlies the Hand-Foot-Genital Syndrome. Hum Mol Genet 2020; 28:1671-1681. [PMID: 30649340 DOI: 10.1093/hmg/ddz013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/14/2018] [Accepted: 01/08/2019] [Indexed: 02/05/2023] Open
Abstract
Hand-Foot-Genital syndrome is a rare condition caused by mutations in the HOXA13 gene and characterized by limb malformations and urogenital defects. While the role of Hoxa13 in limb development has been extensively studied, its function during the development of the urogenital system remains elusive mostly due to the embryonic lethality of Hoxa13 homozygous mutant mice. Using a conditional inactivation strategy, we show that mouse fetuses lacking Hoxa13 function develop megaureters, hydronephrosis and malformations of the uterus, reminiscent of the defects characterizing patients with Hand-Foot-Genital syndrome. Our analysis reveals that Hoxa13 plays a critical role in Müllerian ducts fusion and in ureter remodeling by regulating the elimination of the caudal common nephric duct, eventually preventing the separation from the nephric duct. Our data also reveal a specific role for Hoxa13 in the urogenital sinus, which is in part mediated by Gata3, as well as Hoxa13 requirement for the proper organization of the ureter. Finally, we provide evidence that Hoxa13 provides positional and temporal cues during the development of the lower urogenital system, a sine qua non condition for the proper function of the urinary system.
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Affiliation(s)
- Marine Roux
- Genetics and Development Research Unit, Institut de Recherches Cliniques de Montréal, Montreal, Quebec, Canada
| | - Maxime Bouchard
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Marie Kmita
- Genetics and Development Research Unit, Institut de Recherches Cliniques de Montréal, Montreal, Quebec, Canada.,Department of Experimental Medicine, McGill University, Montreal, Quebec, Canada.,Département de Médecine (Programme de Biologie Moléculaire), Université de Montréal, Montreal, Quebec, Canada
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11
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Single cell and genetic analyses reveal conserved populations and signaling mechanisms of gastrointestinal stromal niches. Nat Commun 2020; 11:334. [PMID: 31953387 PMCID: PMC6969052 DOI: 10.1038/s41467-019-14058-5] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 12/14/2019] [Indexed: 12/12/2022] Open
Abstract
Stomach and intestinal stem cells are located in discrete niches called the isthmus and crypt, respectively. Recent studies have demonstrated a surprisingly conserved role for Wnt signaling in gastrointestinal development. Although intestinal stromal cells secrete Wnt ligands to promote stem cell renewal, the source of stomach Wnt ligands is still unclear. Here, by performing single cell analysis, we identify gastrointestinal stromal cell populations with transcriptome signatures that are conserved between the stomach and intestine. In close proximity to epithelial cells, these perictye-like cells highly express telocyte and pericyte markers as well as Wnt ligands, and they are enriched for Hh signaling. By analyzing mice activated for Hh signaling, we show a conserved mechanism of GLI2 activation of Wnt ligands. Moreover, genetic inhibition of Wnt secretion in perictye-like stromal cells or stromal cells more broadly demonstrates their essential roles in gastrointestinal regeneration and development, respectively, highlighting a redundancy in gastrointestinal stem cell niches.
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12
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Kuo TL, Cheng KH, Chen LT, Hung WC. Deciphering The Potential Role of Hox Genes in Pancreatic Cancer. Cancers (Basel) 2019; 11:cancers11050734. [PMID: 31137902 PMCID: PMC6562939 DOI: 10.3390/cancers11050734] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 02/06/2023] Open
Abstract
The Hox gene family plays an important role in organogenesis and animal development. Currently, 39 Hox genes that are clustered in four chromosome regions have been identified in humans. Emerging evidence suggests that Hox genes are involved in the development of the pancreas. However, the expression of Hox genes in pancreatic tumor tissues has been investigated in only a few studies. In addition, whether specific Hox genes can promote or suppress cancer metastasis is not clear. In this article, we first review the recent progress in studies on the role of Hox genes in pancreatic cancer. By comparing the expression profiles of pancreatic cancer cells isolated from genetically engineered mice established in our laboratory with three different proliferative and metastatic abilities, we identified novel Hox genes that exhibited tumor-promoting activity in pancreatic cancer. Finally, a potential oncogenic mechanism of the Hox genes was hypothesized.
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Affiliation(s)
- Tzu-Lei Kuo
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
| | - Kuang-Hung Cheng
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
| | - Li-Tzong Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
- Division of Hematology/Oncology, Department of Internal Medicine, National Cheng Kung University Hospital, Tainan 704, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Wen-Chun Hung
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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13
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Hashemitabar M, Heidari E. Redefining the signaling pathways from pluripotency to pancreas development: In vitro β-cell differentiation. J Cell Physiol 2018; 234:7811-7827. [PMID: 30480819 DOI: 10.1002/jcp.27736] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 10/22/2018] [Indexed: 02/06/2023]
Abstract
Pancreatic β-cells are destroyed by the immune system, in type 1 diabetes (T1D) and are impaired by glucose insensitivity in type 2 diabetes (T2D). Islet-cells transplantation is a promising therapeutic approach based on in vitro differentiation of pluripotent stem cells (PSCs) to insulin-producing cells (IPCs). According to evolutionary stages in β-cell development, there are several distinct checkpoints; each one has a unique characteristic, including definitive endoderm (DE), primitive gut (PG), posterior foregut (PF), pancreatic epithelium (PE), endocrine precursor (EP), and immature β-cells up to functional β-cells. A better understanding of the gene regulatory networks (GRN) and associated transcription factors in each specific developmental stage, guarantees the achievement of the next successful checkpoints and ensures an efficient β-cell differentiation procedure. The new findings in signaling pathways, related to the development of the pancreas are discussed here, including Wnt, Activin/Nodal, FGF, BMP, retinoic acid (RA), sonic hedgehog (Shh), Notch, and downstream regulators, required for β-cell commitment. We also summarized different approaches in the IPCs protocol to conceptually define a standardized system, leading to the creation of a reproducible method for β-cell differentiation. To normalize blood glucose level in diabetic mice, the replacement therapy in the early differentiation stage, such as EP stages was associated with better outcome when compared with the fully differentiated β-cells' graft.
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Affiliation(s)
- Mahmoud Hashemitabar
- Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Anatomy and Embryology, Faculty of Medicine, Joundishapur University of Medical Sciences, Ahvaz, Iran
| | - Elham Heidari
- Department of Anatomy and Embryology, Faculty of Medicine, Joundishapur University of Medical Sciences, Ahvaz, Iran
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14
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Stintzing S, Tejpar S, Gibbs P, Thiebach L, Lenz HJ. Understanding the role of primary tumour localisation in colorectal cancer treatment and outcomes. Eur J Cancer 2017; 84:69-80. [PMID: 28787661 PMCID: PMC7505124 DOI: 10.1016/j.ejca.2017.07.016] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/06/2017] [Accepted: 07/11/2017] [Indexed: 02/07/2023]
Abstract
Metastatic colorectal carcinoma (mCRC) is a heterogeneous disease with differing outcomes and clinical responses and poor prognosis. CRCs can be characterised by their primary tumour location within the colon. The left-sided colon, derived from the hindgut, includes the distal third of the transverse colon, splenic flexure, descending colon, sigmoid colon and rectum. The right-sided colon, derived from the midgut, includes the proximal two-thirds of the transverse colon, ascending colon and caecum. Sometimes, the rectum is described separately, despite originating from the hindgut, and in many clinical series, the left-sided colon includes only tumours within and distal to the splenic flexure. Differences in the microbiome, clinical characteristics and chromosomal and molecular characteristics have been reported between the right and left side of the colon, regardless of how this is defined. There is now strong evidence from clinical studies in patients with mCRC for the prognostic effect of primary tumour location. The impact of primary colonic tumour location on response to treatment is now under investigation in a large number of clinical studies in patients with mCRC. In this review, we summarise the microbiome, clinical, chromosomal and molecular differences associated with the primary location of CRC. We present an overview of the proven prognostic impact of primary tumour location for patients with mCRC and discuss emerging data for the predictive impact of primary tumour location on clinical outcome.
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Affiliation(s)
| | - Sabine Tejpar
- Molecular Digestive Oncology Unit, University Hospital Gasthuisberg, Leuven, Belgium.
| | - Peter Gibbs
- Systems Biology and Personalised Medicine, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.
| | | | - Heinz-Josef Lenz
- USC Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA.
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15
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Chang Q, Zhang L, He C, Zhang B, Zhang J, Liu B, Zeng N, Zhu Z. HOXB9 induction of mesenchymal-to-epithelial transition in gastric carcinoma is negatively regulated by its hexapeptide motif. Oncotarget 2016; 6:42838-53. [PMID: 26536658 PMCID: PMC4767475 DOI: 10.18632/oncotarget.5814] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 10/13/2015] [Indexed: 01/03/2023] Open
Abstract
HOXB9, a transcription factor, plays an important role in development. While HOXB9 has been implicated in tumorigenesis and metastasis, its mechanisms are variable and its role in gastric carcinoma (GC) remains unclear. In the present study, we demonstrated that the expression of HOXB9 decreased in gastric carcinoma and was associated with malignancy and metastasis. Re-expression of HOXB9 in gastric cell lines resulted in the suppression of cell proliferation, migration, and invasion, which was accompanied by the induction of mesenchymal-to-epithelial transition (MET). Comparative sequence analysis and examination of a HOXB9 structural model indicated that three sites might possibly be involved in MET regulation. The in vitro study of HOXB9 mutants showed that these were unable to inhibit MET induction. However, when overexpressing a HOXB9 mutant lacking the hexapeptide motif, a more potent MET induction and tumor suppression was observed compared to that of the wild-type, indicating that the presence of the hexapeptide motif reduced HOXB9 MET induction and tumor suppression activity. Therefore, the results of the present study suggested that HOXB9 is a tumor suppressor in gastric carcinoma, and its activity was controlled by different regulatory mechanisms such as the hexapeptide motif as a "brake" in this case. The results of these regulatory effects could lead to either oncogenic or tumor suppressive roles of HOXB9, depending on the context of the particular type of cancer involved.
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Affiliation(s)
- Qing Chang
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Clinical Oncology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Zhang
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Current Address: Department of Gastrointestinal Surgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Changyu He
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Baogui Zhang
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Zhang
- Department of Clinical Oncology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bingya Liu
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Naiyan Zeng
- Department of Pathology and Pathophysiology, Key laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenggang Zhu
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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16
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Germline HOXB13 p.Gly84Glu mutation and cancer susceptibility: a pooled analysis of 25 epidemiological studies with 145,257 participates. Oncotarget 2016; 6:42312-21. [PMID: 26517352 PMCID: PMC4747227 DOI: 10.18632/oncotarget.5994] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/05/2015] [Indexed: 01/31/2023] Open
Abstract
Numerous studies have investigated association between the germline HOXB13 p.Gly84Glu mutation and cancer risk. However, the results were inconsistent. Herein, we performed this meta-analysis to get a precise conclusion of the associations. A comprehensive literature search was conducted through Medline (mainly Pubmed), Embase, Cochrane Library databases. Crude odds ratios (ORs) and their 95% confidence intervals (CIs) were calculated by STATA 12.1 software to evaluate the association of HOXB13 p.Gly84Glu mutation and cancer susceptibility. Then, 25 studies including 51,390 cases and 93,867 controls were included, and there was significant association between HOXB13 p.Gly84Glu mutation and overall cancer risk (OR = 2.872, 95% CI = 2.121-3.888, P < 0.001), particularly in prostate cancer (OR = 3.248, 95% CI = 2.313-4.560, P < 0.001), while no association was found in breast (OR = 1.424, 95% CI = 0.776-2.613, P = 0.253) and colorectal cancers (OR = 2.070, 95% CI = 0.485-8.841, P = 0.326). When we stratified analysis by ethnicity, significant association was found in Caucasians (OR = 2.673, 95%CI = 1.920-3.720, P < 0.001). Further well-designed with large samples and other various cancers should be performed to validate our results.
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17
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Ordered expression pattern of Hox and ParaHox genes along the alimentary canal in the ascidian juvenile. Cell Tissue Res 2016; 365:65-75. [DOI: 10.1007/s00441-016-2360-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 01/07/2016] [Indexed: 01/03/2023]
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18
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Abstract
Anorectal malformation (ARM) is a congenital anomaly commonly encountered in pediatric surgery practice. Although surgical procedures correct the anatomical anomalies, the post-operative bowel function is not universally satisfactory. The etiology of ARM remains unclear. In this review, we summarize the current understanding of the genetic and epigenetic factors contributing to the pathogenesis of ARM, based on published animal models, human genetics and epidemiological researches. Appreciation of these factors may be helpful in the management of ARM in the future.
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Affiliation(s)
- Chen Wang
- Department of Pediatric Surgery, Capital Institute of Pediatrics, No.2 Ya Bao Road, Beijing, 100020, People's Republic of China
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19
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Kikuchi M, Omori A, Kurokawa D, Akasaka K. Patterning of anteroposterior body axis displayed in the expression of Hox genes in sea cucumber Apostichopus japonicus. Dev Genes Evol 2015; 225:275-86. [PMID: 26250612 DOI: 10.1007/s00427-015-0510-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 07/01/2015] [Indexed: 12/28/2022]
Abstract
The presence of an anteroposterior body axis is a fundamental feature of bilateria. Within this group, echinoderms have secondarily evolved pentameral symmetric body plans. Although all echinoderms present bilaterally symmetric larval stages, they dramatically rearrange their body axis and develop a pentaradial body plan during metamorphosis. Therefore, the location of their anteroposterior body axis in adult forms remains a contentious issue. Unlike other echinoderms, sea cucumbers present an obvious anteroposterior axis not rearranged during metamorphosis, thus representing an interesting group to study their anteroposterior axis patterning. Hox genes are known to play a broadly conserved role in anteroposterior axis patterning in deuterostomes. Here, we report the expression patterns of Hox genes from early development to pentactula stage in sea cucumber. In early larval stages, five Hox genes (AjHox1, AjHox7, AjHox8, AjHox11/13a, and AjHox11/13b) were expressed sequentially along the archenteron, suggesting that the role of anteroposterior patterning of the Hox genes is conserved in bilateral larvae of echinoderms. In doliolaria and pentactula stages, eight Hox genes (AjHox1, AjHox5, AjHox7, AjHox8, AjHox9/10, AjHox11/13a, AjHox11/13b, and AjHox11/13c) were expressed sequentially along the digestive tract, following a similar expression pattern to that found in the visceral mesoderm of other bilateria. Unlike other echinoderms, pentameral expression patterns of AjHox genes were not observed in sea cucumber. Altogether, we concluded that AjHox genes are involved in the patterning of the digestive tract in both larvae and metamorphosis of sea cucumbers. In addition, the anteroposterior axis in sea cucumbers might be patterned like that of other bilateria.
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Affiliation(s)
- Mani Kikuchi
- Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo, 1024 Koajiro, Misaki, Miura, Kanagawa, 238-0225, Japan.
| | - Akihito Omori
- Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo, 1024 Koajiro, Misaki, Miura, Kanagawa, 238-0225, Japan
| | - Daisuke Kurokawa
- Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo, 1024 Koajiro, Misaki, Miura, Kanagawa, 238-0225, Japan
| | - Koji Akasaka
- Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo, 1024 Koajiro, Misaki, Miura, Kanagawa, 238-0225, Japan
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20
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Guiu J, Jensen KB. From Definitive Endoderm to Gut-a Process of Growth and Maturation. Stem Cells Dev 2015; 24:1972-83. [PMID: 26134088 DOI: 10.1089/scd.2015.0017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The intestine and colon carries out vital functions, and their lifelong maintenance is of the upmost importance. Research over the past decades has carefully addressed bowel function, how it is maintained and begun to unravel how disorders such as cancer and inflammatory bowel disease form. In contrast, very little is known about the molecular mechanisms that trigger tissue maturation during development. With this review, our aim is to carefully provide a critical appraisal of the literature to give a state-of-the-art view of intestinal development. Starting from definitive endoderm at gastrulation to the emergence of a structure with mature properties, the tissue undergoes complex morphogenetic processes that rely on both biophysical changes and secreted signaling molecules. We will also discuss how new and exciting developments using in vitro models are likely to provide new insights into this process and potential therapeutic strategies for gastrointestinal disorders.
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Affiliation(s)
- Jordi Guiu
- BRIC - Biotech Research and Innovation Centre, University of Copenhagen , Copenhagen N, Denmark
| | - Kim B Jensen
- BRIC - Biotech Research and Innovation Centre, University of Copenhagen , Copenhagen N, Denmark
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21
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Higuchi Y, Kojima M, Ishii G, Aoyagi K, Sasaki H, Ochiai A. Gastrointestinal Fibroblasts Have Specialized, Diverse Transcriptional Phenotypes: A Comprehensive Gene Expression Analysis of Human Fibroblasts. PLoS One 2015; 10:e0129241. [PMID: 26046848 PMCID: PMC4457624 DOI: 10.1371/journal.pone.0129241] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 05/06/2015] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Fibroblasts are the principal stromal cells that exist in whole organs and play vital roles in many biological processes. Although the functional diversity of fibroblasts has been estimated, a comprehensive analysis of fibroblasts from the whole body has not been performed and their transcriptional diversity has not been sufficiently explored. The aim of this study was to elucidate the transcriptional diversity of human fibroblasts within the whole body. METHODS Global gene expression analysis was performed on 63 human primary fibroblasts from 13 organs. Of these, 32 fibroblasts from gastrointestinal organs (gastrointestinal fibroblasts: GIFs) were obtained from a pair of 2 anatomical sites: the submucosal layer (submucosal fibroblasts: SMFs) and the subperitoneal layer (subperitoneal fibroblasts: SPFs). Using hierarchical clustering analysis, we elucidated identifiable subgroups of fibroblasts and analyzed the transcriptional character of each subgroup. RESULTS In unsupervised clustering, 2 major clusters that separate GIFs and non-GIFs were observed. Organ- and anatomical site-dependent clusters within GIFs were also observed. The signature genes that discriminated GIFs from non-GIFs, SMFs from SPFs, and the fibroblasts of one organ from another organ consisted of genes associated with transcriptional regulation, signaling ligands, and extracellular matrix remodeling. CONCLUSIONS GIFs are characteristic fibroblasts with specific gene expressions from transcriptional regulation, signaling ligands, and extracellular matrix remodeling related genes. In addition, the anatomical site- and organ-dependent diversity of GIFs was also discovered. These features of GIFs contribute to their specific physiological function and homeostatic maintenance, and create a functional diversity of the gastrointestinal tract.
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Affiliation(s)
- Youichi Higuchi
- Laboratory of Cancer Biology, Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Motohiro Kojima
- Pathology Division, Research Center for Innovative Oncology National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Genichiro Ishii
- Pathology Division, Research Center for Innovative Oncology National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Kazuhiko Aoyagi
- Genetic Division, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | - Hiroki Sasaki
- Genetic Division, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | - Atsushi Ochiai
- Laboratory of Cancer Biology, Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
- Pathology Division, Research Center for Innovative Oncology National Cancer Center Hospital East, Kashiwa, Chiba, Japan
- * E-mail:
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22
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Li Y, Yang XH, Fang SJ, Qin CF, Sun RL, Liu ZY, Jiang BY, Wu X, Li G. HOXA7 stimulates human hepatocellular carcinoma proliferation through cyclin E1/CDK2. Oncol Rep 2014; 33:990-6. [PMID: 25501982 DOI: 10.3892/or.2014.3668] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 12/08/2014] [Indexed: 12/14/2022] Open
Abstract
HOX genes are transcription factors that control morphogenesis, organogenesis and differentiation. Increasing evidence suggests that HOX genes play a role in hepatocellular carcinoma (HCC) progression; however few studies have defined the functional roles and mechanisms of action. In the present study, we used siRNA and forced-expression in multiple cell lines to define the role of HOXA7 in the regulation of proliferation of HCC in vitro and in vivo. Knockdown of endogenous HOXA7 decreased the proliferation of HepG2 and QGY-7703 cells. These changes were not associated with significant changes in cyclin D1 and CDK4. However, downregulation of HOXA7 significantly reduced cyclin E1 and CDK2 protein levels. Conversely, overexpression of HOXA7 in QSG-7701 cells stimulated proliferation and increased cyclin E1 and CDK2 protein levels. Our results confirmed that HOXA7 promoted cell proliferation, and these changes were mediated by cyclin E1/CDK2. These observations contribute to our understanding of the important roles of HOXA7 in HCC development and progression and HOXA7 could be a promising molecular target for the development of new diagnostic and therapeutic strategies for HCC.
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Affiliation(s)
- Yuehui Li
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Xiao Hui Yang
- Xiangya Third Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Shu Juang Fang
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Chang Fei Qin
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Rui Li Sun
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Zhao Yang Liu
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Bin Yuan Jiang
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Xiang Wu
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
| | - Guancheng Li
- Tumor Immunobiology Laboratory of the Cancer Research Institute, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Key Laboratory of Carcinogenesis, Ministry of Health, Central South University, Changsha, Hunan, P.R. China
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23
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Ogaki S, Shiraki N, Kume K, Kume S. Wnt and Notch signals guide embryonic stem cell differentiation into the intestinal lineages. Stem Cells 2014; 31:1086-96. [PMID: 23378042 DOI: 10.1002/stem.1344] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 01/10/2013] [Indexed: 12/11/2022]
Abstract
The studies of differentiation of mouse or human embryonic stem cells (hESCs) into specific cell types of the intestinal cells would provide insights to the understanding of intestinal development and ultimately yield cells for the use in future regenerative medicine. Here, using an in vitro differentiation procedure of pluripotent stem cells into definitive endoderm (DE), inductive signal pathways' guiding differentiation into intestinal cells was investigated. We found that activation of Wnt/β-catenin and inhibition of Notch signaling pathways, by simultaneous application of 6-bromoindirubin-3'-oxime (BIO), a glycogen synthase kinase-3β inhibitor, and N-[(3,5-Difluorophenyl)acetyl]-L-alanyl-2-phenylglycine-1,1-dimethylethyl ester (DAPT), a known γ-secretase inhibitor, efficiently induced intestinal differentiation of ESCs cultured on feeder cell. BIO and DAPT patterned the DE at graded concentrations. Upon prolonged culture on feeder cells, all four intestinal differentiated cell types, the absorptive enterocytes and three types of secretory cells (goblet cells, enteroendocrine cells, and Paneth cells), were efficiently differentiated from mouse and hESC-derived intestinal epithelium cells. Further investigation revealed that in the mouse ESCs, fibroblast growth factor (FGF) and bone morphogenetic protein (BMP) signaling act synergistically with BIO and DAPT to potentiate differentiation into the intestinal epithelium. However, in hESCs, FGF signaling inhibited, and BMP signaling did not affect differentiation into the intestinal epithelium. We concluded that Wnt and Notch signaling function to pattern the anterior-posterior axis of the DE and control intestinal differentiation.
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Affiliation(s)
- Soichiro Ogaki
- Stem Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Honjo, Kumamoto, Japan
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Multiple Enhancers Regulate Hoxd Genes and the Hotdog LncRNA during Cecum Budding. Cell Rep 2013; 5:137-50. [DOI: 10.1016/j.celrep.2013.09.002] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 08/07/2013] [Accepted: 09/05/2013] [Indexed: 11/23/2022] Open
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Buchon N, Osman D, David FPA, Fang HY, Boquete JP, Deplancke B, Lemaitre B. Morphological and molecular characterization of adult midgut compartmentalization in Drosophila. Cell Rep 2013; 3:1725-38. [PMID: 23643535 DOI: 10.1016/j.celrep.2013.04.001] [Citation(s) in RCA: 339] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 03/05/2013] [Accepted: 04/02/2013] [Indexed: 11/15/2022] Open
Abstract
Although the gut is a central organ of Eumetazoans and is essential for organismal health, our understanding of its morphological and molecular determinants remains rudimentary. Here, we provide a comprehensive atlas of Drosophila adult midgut. Specifically, we uncover a fine-grained regional organization consisting of 14 subregions with distinct morphological, histological, and genetic properties. We also show that Drosophila intestinal regionalization is defined after adult emergence, remains stable throughout life, and reestablishes following acute tissue damage. Additionally, we show that this midgut compartmentalization is achieved through the interplay between pan-midgut and regionalized transcription factors, in concert with spatial activities of morphogens. Interestingly, disruption of the midgut compartmentalization leads to a loss of intestinal homeostasis characterized by an increase in stem cell proliferation and aberrant immune responses. Our integrative analysis of Drosophila midgut compartmentalization provides insights into the conserved mechanisms underlying intestinal regionalization in metazoans.
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Affiliation(s)
- Nicolas Buchon
- Global Health Institute, School of Life Sciences, Station 19, EPFL, 1015 Lausanne, Switzerland.
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Han Y, Tu WW, Wen YG, Li DP, Qiu GQ, Tang HM, Peng ZH, Zhou CZ. Identification and validation that up-expression of HOXA13 is a novel independent prognostic marker of a worse outcome in gastric cancer based on immunohistochemistry. Med Oncol 2013; 30:564. [PMID: 23592225 DOI: 10.1007/s12032-013-0564-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 03/27/2013] [Indexed: 12/21/2022]
Abstract
Homeobox (HOX) gene family is known to be classic examples of the intimate relationship between embryogenesis and tumorigenesis. However, less is known about the involvement of HOX gene family with gastric cancerogenesis. Here, we screened the expression of HOX gene family in gastric cancers and explored the relationships between them by cDNA microarray. We found several differentially expressed HOX genes in gastric cancers, especially HOXA10 (11/12) and HOXA13 (11/12) with significantly higher expression in the cancerous tissues. Furthermore, we validated HOXA13 as a novel prognostic marker in gastric cancer based on immunohistochemistry and statistical analysis. HOXA13 expression was significantly up-regulated in cancerous tissues compared with the corresponding non-cancerous mucosa (P < 0.001). Up-expression of HOXA13 was significantly correlated with T stage (P = 0.002), M stage (P = 0.024), advanced UICC stage (P < 0.001), histological differentiation (P = 0.005), and relapse (P = 0.001). Patients with positive HOXA13 expression had a obviously lower overall survival (OS) and disease-free survival (DFS) rate than patients with negative HOXA13 expression (HR 3.331, 95 % CI 1.722-6.442, P < 0.001; HR 3.289, 95 % CI 1.703-6.351, P < 0.001, respectively). Univariate and multivariate Cox analysis confirmed that HOXA13 could serve as a significant independent prognostic factor for DFS and OS. Therefore, our results indicated that several HOX genes might be closely involved in the process of the gastric tumorigenesis. Furthermore, up-expression of HOXA13 might be associated with highly aggressive phenotype of gastric cancer. HOXA13 was a significant independent prognostic factor and could serve as a putative biomarker for diagnosis and prognosis of gastric cancer.
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Affiliation(s)
- Yang Han
- Department of General Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 85 Wujin Road, Shanghai 20080, China
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Germline HOXB13 p.Gly84Glu mutation and risk of colorectal cancer. Cancer Epidemiol 2013; 37:424-7. [PMID: 23541221 DOI: 10.1016/j.canep.2013.03.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 03/03/2013] [Accepted: 03/04/2013] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The HOXB13 pGly84Glu mutation has recently been associated with an increased risk of prostate cancer but the association of other cancer sites with this allele has not been assessed. Data has suggested that HOXB13 expression levels are decreased in colorectal cancer (CRC) cell lines indicating this gene may be involved in colorectal tumourigenesis. METHODS To evaluate a potential association of this mutation with CRC, we genotyped the mutation in 2695 CRC cases and 4593 controls from population-based registries in Canada and Australia. RESULTS The HOXB13 pGly84Glu mutation was more common in CRC cases than controls (0.48% vs. 0.17%, P=0.02) indicating a significant association between the HOXB13 variant and CRC risk (OR=2.8; 95%CI: 1.2-6.8). This association was attenuated but remained significant with the inclusion of previously published and publicly available genotype data. Pedigree analysis of cases and controls revealed that 7/21 HOXB13 mutation carriers had a family history of prostate cancer. DISCUSSION This report is the first to suggest a risk of CRC associated with mutations in the HOXB13 gene. These findings require further validation but may be of importance in the screening and genetic counseling of families known to carry the HOXB13 pGly84Glu mutation.
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Sheaffer KL, Kaestner KH. Transcriptional networks in liver and intestinal development. Cold Spring Harb Perspect Biol 2012; 4:a008284. [PMID: 22952394 DOI: 10.1101/cshperspect.a008284] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The development of the gastrointestinal tract is a complex process that integrates signaling processes with downstream transcriptional responses. Here, we discuss the regionalization of the primitive gut and formation of the intestine and liver. Anterior-posterior position in the primitive gut is important for establishing regions that will become functional organs. Coordination of signaling between the epithelium and mesenchyme and downstream transcriptional responses is required for intestinal development and homeostasis. Liver development uses a complex transcriptional network that controls the establishment of organ domains, cell differentiation, and adult function. Discussion of these transcriptional mechanisms gives us insight into how the primitive gut, composed of simple endodermal cells, develops into multiple diverse cell types that are organized into complex mature organs.
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Affiliation(s)
- Karyn L Sheaffer
- Department of Genetics, Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
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Evidence for a functional role of epigenetically regulated midcluster HOXB genes in the development of Barrett esophagus. Proc Natl Acad Sci U S A 2012; 109:9077-82. [PMID: 22603795 DOI: 10.1073/pnas.1116933109] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Barrett esophagus (BE) is a human metaplastic condition that is the only known precursor to esophageal adenocarcinoma. BE is characterized by a posterior intestinal-like phenotype in an anterior organ and therefore it is reminiscent of homeotic transformations, which can occur in transgenic animal models during embryonic development as a consequence of mutations in HOX genes. In humans, acquired deregulation of HOX genes during adulthood has been linked to carcinogenesis; however, little is known about their role in the pathogenesis of premalignant conditions. We hypothesized that HOX genes may be implicated in the development of BE. We demonstrated that three midcluster HOXB genes (HOXB5, HOXB6, and HOXB7) are overexpressed in BE, compared with the anatomically adjacent normal esophagus and gastric cardia. The midcluster HOXB gene signature in BE is identical to that seen in normal colonic epithelium. Ectopic expression of these three genes in normal squamous esophageal cells in vitro induces markers of intestinal differentiation, such as KRT20, MUC2, and VILLIN. In BE-associated adenocarcinoma, the activation midcluster HOXB gene is associated with loss of H3K27me3 and gain of AcH3, compared with normal esophagus. These changes in histone posttranslational modifications correlate with specific chromatin decompaction at the HOXB locus. We suggest that epigenetically regulated alterations of HOX gene expression can trigger changes in the transcriptional program of adult esophageal cells, with implications for the early stages of carcinogenesis.
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Howell JC, Wells JM. Generating intestinal tissue from stem cells: potential for research and therapy. Regen Med 2012; 6:743-55. [PMID: 22050526 DOI: 10.2217/rme.11.90] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Intestinal resection and malformations in adult and pediatric patients result in devastating consequences. Unfortunately, allogeneic transplantation of intestinal tissue into patients has not been met with the same measure of success as the transplantation of other organs. Attempts to engineer intestinal tissue in vitro include disaggregation of adult rat intestine into subunits called organoids, harvesting native adult stem cells from mouse intestine and spontaneous generation of intestinal tissue from embryoid bodies. Recently, by utilizing principles gained from the study of developmental biology, human pluripotent stem cells have been demonstrated to be capable of directed differentiation into intestinal tissue in vitro. Pluripotent stem cells offer a unique and promising means to generate intestinal tissue for the purposes of modeling intestinal disease, understanding embryonic development and providing a source of material for therapeutic transplantation.
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Affiliation(s)
- Jonathan C Howell
- Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, USA
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Micallef SJ, Li X, Schiesser JV, Hirst CE, Yu QC, Lim SM, Nostro MC, Elliott DA, Sarangi F, Harrison LC, Keller G, Elefanty AG, Stanley EG. INS(GFP/w) human embryonic stem cells facilitate isolation of in vitro derived insulin-producing cells. Diabetologia 2012; 55:694-706. [PMID: 22120512 PMCID: PMC3268987 DOI: 10.1007/s00125-011-2379-y] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 10/20/2011] [Indexed: 01/13/2023]
Abstract
AIMS/HYPOTHESIS We aimed to generate human embryonic stem cell (hESC) reporter lines that would facilitate the characterisation of insulin-producing (INS⁺) cells derived in vitro. METHODS Homologous recombination was used to insert sequences encoding green fluorescent protein (GFP) into the INS locus, to create reporter cell lines enabling the prospective isolation of viable INS⁺ cells. RESULTS Differentiation of INS(GFP/w) hESCs using published protocols demonstrated that all GFP⁺ cells co-produced insulin, confirming the fidelity of the reporter gene. INS-GFP⁺ cells often co-produced glucagon and somatostatin, confirming conclusions from previous studies that early hESC-derived insulin-producing cells were polyhormonal. INS(GFP/w) hESCs were used to develop a 96-well format spin embryoid body (EB) differentiation protocol that used the recombinant protein-based, fully defined medium, APEL. Like INS-GFP⁺ cells generated with other methods, those derived using the spin EB protocol expressed a suite of pancreatic-related transcription factor genes including ISL1, PAX6 and NKX2.2. However, in contrast with previous methods, the spin EB protocol yielded INS-GFP⁺ cells that also co-expressed the beta cell transcription factor gene, NKX6.1, and comprised a substantial proportion of monohormonal INS⁺ cells. CONCLUSIONS/INTERPRETATION INS(GFP/w) hESCs are a valuable tool for investigating the nature of early INS⁺ progenitors in beta cell ontogeny and will facilitate the development of novel protocols for generating INS⁺ cells from differentiating hESCs.
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Affiliation(s)
- S. J. Micallef
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - X. Li
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - J. V. Schiesser
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - C. E. Hirst
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - Q. C. Yu
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - S. M. Lim
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - M. C. Nostro
- McEwen Centre for Regenerative Medicine, University Health Network, Toronto, ON Canada
| | - D. A. Elliott
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - F. Sarangi
- McEwen Centre for Regenerative Medicine, University Health Network, Toronto, ON Canada
| | - L. C. Harrison
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC Australia
| | - G. Keller
- McEwen Centre for Regenerative Medicine, University Health Network, Toronto, ON Canada
| | - A. G. Elefanty
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
| | - E. G. Stanley
- Monash Immunology and Stem Cell Laboratories (MISCL), Level 3, Building 75, STRIP1, West Ring Road, Monash University, Clayton, Victoria 3800 Australia
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Cellular reprogramming during mouse development. Results Probl Cell Differ 2012; 55:291-302. [PMID: 22918813 DOI: 10.1007/978-3-642-30406-4_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
States of terminal cell differentiation are often considered to be fixed. There are examples, however, in which cells of one type can be converted to a completely different cell type. The process whereby one cell type can be converted to another is referred to as cellular reprogramming. Cellular reprogramming is also referred to in the literature as transdifferentiation (or the direct conversion of one cell type to another without dedifferentiation to an intermediate cell type). Where the conversion between cell types occurs in the developing embryo, the process is referred to as transdetermination. Herein we examine some well-defined examples of transdetermination. Defining the molecular and cellular basis of transdetermination will help us to understand the normal developmental biology of the cells that interconvert, as well as identifying key regulatory transcription factors (master switch genes) that may be important for the reprogramming of stem cells. Harnessing the therapeutic potential of reprogramming and master genes is an important goal in regenerative medicine.
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The Expression Analysis of Notch-1 and Jagged-2 During the Development of the Hindgut in Rat Embryos with Ethylenethiourea Induced Anorectal Malformations. J Surg Res 2012; 172:131-6. [DOI: 10.1016/j.jss.2010.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 07/16/2010] [Accepted: 08/09/2010] [Indexed: 12/22/2022]
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Boundaries, junctions and transitions in the gastrointestinal tract. Exp Cell Res 2011; 317:2711-8. [PMID: 21802415 DOI: 10.1016/j.yexcr.2011.07.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 07/12/2011] [Accepted: 07/13/2011] [Indexed: 01/01/2023]
Abstract
Contiguous regions along the mammalian gastrointestinal tract, from the esophagus to the rectum, serve distinct digestive functions. Some organs, such as the esophagus and glandular stomach or the small bowel and colon, are separated by sharp boundaries. The duodenal, jejunal and ileal segments of the small intestine, by contrast, have imprecise borders. Because human esophageal and gastric cancers frequently arise in a background of tissue metaplasia and some intestinal disorders are confined to discrete regions, it is useful to appreciate the molecular and cellular basis of boundary formation and preservation. Here we review the anatomy and determinants of boundaries and transitions in the alimentary canal with respect to tissue morphology, gene expression, and, especially, transcriptional control of epithelial identity. We discuss the evidence for established and candidate molecular mechanisms of boundary formation, including the solitary and combinatorial actions of tissue-restricted transcription factors. Although the understanding remains sparse, genetic studies in mice do provide insights into dominant mechanisms and point the way for future investigation.
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Ikuta T. Evolution of invertebrate deuterostomes and Hox/ParaHox genes. GENOMICS, PROTEOMICS & BIOINFORMATICS 2011; 9:77-96. [PMID: 21802045 PMCID: PMC5054439 DOI: 10.1016/s1672-0229(11)60011-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 03/21/2011] [Indexed: 11/10/2022]
Abstract
Transcription factors encoded by Antennapedia-class homeobox genes play crucial roles in controlling development of animals, and are often found clustered in animal genomes. The Hox and ParaHox gene clusters have been regarded as evolutionary sisters and evolved from a putative common ancestral gene complex, the ProtoHox cluster, prior to the divergence of the Cnidaria and Bilateria (bilaterally symmetrical animals). The Deuterostomia is a monophyletic group of animals that belongs to the Bilateria, and a sister group to the Protostomia. The deuterostomes include the vertebrates (to which we belong), invertebrate chordates, hemichordates, echinoderms and possibly xenoturbellids, as well as acoelomorphs. The studies of Hox and ParaHox genes provide insights into the origin and subsequent evolution of the bilaterian animals. Recently, it becomes apparent that among the Hox and ParaHox genes, there are significant variations in organization on the chromosome, expression pattern, and function. In this review, focusing on invertebrate deuterostomes, I first summarize recent findings about Hox and ParaHox genes. Next, citing unsolved issues, I try to provide clues that might allow us to reconstruct the common ancestor of deuterostomes, as well as understand the roles of Hox and ParaHox genes in the development and evolution of deuterostomes.
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Affiliation(s)
- Tetsuro Ikuta
- Marine Genomics Unit, Okinawa Institute of Science and Technology, Uruma, Japan.
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Li Z, Kawasumi M, Zhao B, Moisyadi S, Yang J. Transgenic over-expression of growth differentiation factor 11 propeptide in skeleton results in transformation of the seventh cervical vertebra into a thoracic vertebra. Mol Reprod Dev 2011; 77:990-7. [PMID: 21049546 DOI: 10.1002/mrd.21252] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Growth differentiation factor 11 (GDF11) is one of the significant genes that control skeletal formation. Knockout of GDF11 function causes abnormal patterning of the anterior/posterior axial skeleton. The mRNA of GDF11 is initially translated to a precursor protein that undergoes a proteolytic cleavage to generate the C-terminal peptide or mature GDF11, and the N-terminal peptide named GDF11 propeptide. The propeptide can antagonize GDF11 activity in vitro. To investigate the effects of GDF11 propeptide on GDF11 function in vivo, we generated transgenic mice that over-express the propeptide cDNA in skeletal tissue. The transgenic mice showed formation of extra ribs on the seventh cervical vertebra (C7) as a result of transformation of the C7 vertebra into a thoracic vertebra. The GDF11 propeptide transgene mRNA was detected in tail tissue in embryos and was highly expressed in tail and calvaria bones after birth. A high frequency of C7 rib formation was noticed in the transgenic mouse line with a high level of transgene expression. The anterior boundaries of Hoxa-4 and Hoxa-5 mRNA in situ expressions showed cranial shifts from their normal prevertebra locations in transgenic embryos. These results demonstrated significant effects of GDF11 propeptide transgene on vertebral formation, which are likely occurring through depressing GDF11 function and altered locations of Hoxa-4 and Hoxa-5 expression.
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Affiliation(s)
- Zicong Li
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA
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Smooth-muscle-specific expression of neurotrophin-3 in mouse embryonic and neonatal gastrointestinal tract. Cell Tissue Res 2010; 340:267-86. [PMID: 20387078 DOI: 10.1007/s00441-010-0959-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2009] [Accepted: 02/26/2010] [Indexed: 12/20/2022]
Abstract
Vagal gastrointestinal (GI) afferents are essential for the regulation of eating, body weight, and digestion. However, their functional organization and the way that this develops are poorly understood. Neurotrophin-3 (NT-3) is crucial for the survival of vagal sensory neurons and is expressed in the developing GI tract, possibly contributing to their survival and to other aspects of vagal afferent development. The identification of the functions of this peripheral NT-3 thus requires a detailed understanding of the localization and timing of its expression in the developing GI tract. We have studied embryos and neonates expressing the lacZ reporter gene from the NT-3 locus and found that NT-3 is expressed predominantly in the smooth muscle of the outer GI wall of the stomach, intestines, and associated blood vessels and in the stomach lamina propria and esophageal epithelium. NT-3 expression has been detected in the mesenchyme of the GI wall by embryonic day 12.5 (E12.5) and becomes restricted to smooth muscle and lamina propria by E15.5, whereas its expression in blood vessels and esophageal epithelium is first observed at E15.5. Expression in most tissues is maintained at least until postnatal day 4. The lack of colocalization of beta-galactosidase and markers for myenteric ganglion cell types suggests that NT-3 is not expressed in these ganglia. Therefore, NT-3 expression in the GI tract is largely restricted to smooth muscle at ages when vagal axons grow into the GI tract, and when vagal mechanoreceptors form in smooth muscle, consistent with its role in these processes and in vagal sensory neuron survival.
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Li X, Udager AM, Hu C, Qiao XT, Richards N, Gumucio DL. Dynamic patterning at the pylorus: formation of an epithelial intestine-stomach boundary in late fetal life. Dev Dyn 2010; 238:3205-17. [PMID: 19877272 DOI: 10.1002/dvdy.22134] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In the adult mouse, distinct morphological and transcriptional differences separate stomach from intestinal epithelium. Remarkably, the epithelial boundary between these two organs is literally one cell thick. This discrete junction is established suddenly and precisely at embryonic day (E) 16.5, by sharpening a previously diffuse intermediate zone. In the present study, we define the dynamic transcriptome of stomach, pylorus, and intestinal tissues between E14.5 and E16.5. We show that establishment of this boundary is concomitant with the induction of over a thousand genes in intestinal epithelium, and these gene products provide intestinal character. Hence, we call this process intestinalization. We identify specific transcription factors (Hnf4 gamma, Creb3l3, and Tcfec) and examine signaling pathways (Hedgehog and Wnt) that may play a role in this process. Finally, we define a unique expression domain at the pylorus itself and detect novel pylorus-specific patterns for the transcription factor Gata3 and the secreted protein nephrocan.
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Affiliation(s)
- Xing Li
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, Michigan 48109-2200, USA
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40
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Zhang D, Brinas IM, Binder BJ, Landman KA, Newgreen DF. Neural crest regionalisation for enteric nervous system formation: Implications for Hirschsprung's disease and stem cell therapy. Dev Biol 2010; 339:280-94. [DOI: 10.1016/j.ydbio.2009.12.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 12/02/2009] [Accepted: 12/10/2009] [Indexed: 01/21/2023]
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Abstract
The endoderm germ layer contributes to the respiratory and gastrointestinal tracts and to all of their associated organs. Over the past decade, studies in vertebrate model organisms, including frog, fish, chick, and mouse, have greatly enhanced our understanding of the molecular basis of endoderm organ development. We review this progress with a focus on early stages of endoderm organogenesis including endoderm formation, gut tube morphogenesis and patterning, and organ specification. Lastly, we discuss how developmental mechanisms that regulate endoderm organogenesis are used to direct differentiation of embryonic stem cells into specific adult cell types, which function to alleviate disease symptoms in animal models.
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Affiliation(s)
- Aaron M Zorn
- Division of Developmental Biology, Cincinnati Children's Research Foundation and Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio 45229, USA.
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Udager A, Prakash A, Gumucio DL. Dividing the tubular gut: generation of organ boundaries at the pylorus. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2010; 96:35-62. [PMID: 21075339 DOI: 10.1016/b978-0-12-381280-3.00002-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The discrete organs that comprise the gastrointestinal tract (esophagus, stomach, small intestine, and large intestine) arise embryonically by regional differentiation of a single tube that is initially morphologically similar along its length. Regional organ differentiation programs, for example, for stomach or intestine, involve signaling cross-talk between epithelium and mesenchyme and result in the formation of precise boundaries between organs, across which dramatic differences in both morphology and gene expression are seen. The pylorus is a unique area of the gut tube because it not only marks an important organ boundary in the tubular gut (the stomach/intestinal boundary) but is also the hub for the development of multiple accessory organs (liver, pancreas, gall bladder, and spleen). This chapter examines: (a) our current understanding of the molecular and morphogenic processes that underlie the generation of the dramatic epithelial tissue boundary that compartmentalizes stomach and intestine; (b) the tissue interactions that promote development of the accessory organs in this area; and (c) the molecular interactions that specify patterning of the pyloric sphincter. Though the focus here is primarily on the mouse as a model organism, the molecular underpinnings of organ patterning near the pylorus are shared by chick and frog. Thus, further study of these conserved developmental programs could potentially shed light on the mechanisms underlying human pyloric malformations such as infantile hypertrophic pyloric stenosis.
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Affiliation(s)
- Aaron Udager
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA
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Khurana S, Mills JC. The gastric mucosa development and differentiation. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2010; 96:93-115. [PMID: 21075341 DOI: 10.1016/b978-0-12-381280-3.00004-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The development and differentiation of the gastric mucosa are controlled by a complex interplay of signaling proteins and transcriptional regulators. This process is complicated by the fact that the stomach is derived from two germ layers, the endoderm and the mesoderm, with the first giving rise to the mature epithelium and the latter contributing the smooth muscle required for peristalsis. Reciprocal epithelial-mesenchymal interactions dictate the formation of the stomach during fetal development, and also contribute to its continuous regeneration and differentiation throughout adult life. In this chapter, we discuss the discoveries that have been made in different model systems, from zebrafish to human, which show that the Hedgehog, Wnt, Notch, bone morphogenetic protein, and fibroblast growth factor (FGF) signaling systems play essential roles during various stages of stomach development.
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Affiliation(s)
- Shradha Khurana
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
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Ortiz-Pineda PA, Ramírez-Gómez F, Pérez-Ortiz J, González-Díaz S, Santiago-De Jesús F, Hernández-Pasos J, Del Valle-Avila C, Rojas-Cartagena C, Suárez-Castillo EC, Tossas K, Méndez-Merced AT, Roig-López JL, Ortiz-Zuazaga H, García-Arrarás JE. Gene expression profiling of intestinal regeneration in the sea cucumber. BMC Genomics 2009; 10:262. [PMID: 19505337 PMCID: PMC2711116 DOI: 10.1186/1471-2164-10-262] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Accepted: 06/08/2009] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Among deuterostomes, the regenerative potential is maximally expressed in echinoderms, animals that can quickly replace most injured organs. In particular, sea cucumbers are excellent models for studying organ regeneration since they regenerate their digestive tract after evisceration. However, echinoderms have been sidelined in modern regeneration studies partially because of the lack of genome-wide profiling approaches afforded by modern genomic tools.For the last decade, our laboratory has been using the sea cucumber Holothuria glaberrima to dissect the cellular and molecular events that allow for such amazing regenerative processes. We have already established an EST database obtained from cDNA libraries of normal and regenerating intestine at two different regeneration stages. This database now has over 7000 sequences. RESULTS In the present work we used a custom-made microchip from Agilent with 60-mer probes for these ESTs, to determine the gene expression profile during intestinal regeneration. Here we compared the expression profile of animals at three different intestinal regeneration stages (3-, 7- and 14-days post evisceration) against the profile from normal (uneviscerated) intestines. The number of differentially expressed probes ranged from 70% at p < 0.05 to 39% at p < 0.001. Clustering analyses show specific profiles of expression for early (first week) and late (second week) regeneration stages. We used semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR) to validate the expression profile of fifteen microarray detected differentially expressed genes which resulted in over 86% concordance between both techniques. Most of the differentially expressed ESTs showed no clear similarity to sequences in the databases and might represent novel genes associated with regeneration. However, other ESTs were similar to genes known to be involved in regeneration-related processes, wound healing, cell proliferation, differentiation, morphological plasticity, cell survival, stress response, immune challenge, and neoplastic transformation. Among those that have been validated, cytoskeletal genes, such as actins, and developmental genes, such as Wnt and Hox genes, show interesting expression profiles during regeneration. CONCLUSION Our findings set the base for future studies into the molecular basis of intestinal regeneration. Moreover, it advances the use of echinoderms in regenerative biology, animals that because of their amazing properties and their key evolutionary position, might provide important clues to the genetic basis of regenerative processes.
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Affiliation(s)
- Pablo A Ortiz-Pineda
- University of Puerto Rico, Rio Piedras, Department of Biology, San Juan, PR, USA.
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Verzi MP, Stanfel MN, Moses KA, Kim BM, Zhang Y, Schwartz RJ, Shivdasani RA, Zimmer WE. Role of the homeodomain transcription factor Bapx1 in mouse distal stomach development. Gastroenterology 2009; 136:1701-10. [PMID: 19208343 PMCID: PMC2955323 DOI: 10.1053/j.gastro.2009.01.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 12/15/2008] [Accepted: 01/08/2009] [Indexed: 12/02/2022]
Abstract
BACKGROUND & AIMS Expansion and patterning of the endoderm generate a highly ordered, multiorgan digestive system in vertebrate animals. Among distal foregut derivatives, the gastric corpus, antrum, pylorus, and duodenum are distinct structures with sharp boundaries. Some homeodomain transcription factors expressed in gut mesenchyme convey positional information required for anterior-posterior patterning of the digestive tract. Barx1, in particular, controls stomach differentiation and morphogenesis. The Nirenberg and Kim homeobox gene Bapx1 (Nkx3-2) has an established role in skeletal development, but its function in the mammalian gut is less clear. METHODS We generated a Bapx1(Cre) knock-in allele to fate map Bapx1-expressing cells and evaluate its function in gastrointestinal development. RESULTS Bapx1-expressing cells populate the gut mesenchyme with a rostral boundary in the hindstomach near the junction of the gastric corpus and antrum. Smooth muscle differentiation and distribution of early regional markers are ostensibly normal in Bapx1(Cre/Cre) gut, but there are distinctive morphologic abnormalities near this rostral Bapx1 domain: the antral segment of the stomach is markedly shortened, and the pyloric constriction is lost. Comparison of expression domains and examination of stomach phenotypes in single and compound Barx1 and Bapx1 mutant mice suggests a hierarchy between these 2 factors; Bapx1 expression is lost in the absence of Barx1. CONCLUSIONS This study reveals the nonredundant requirement for Bapx1 in distal stomach development, places it within a Barx1-dependent pathway, and illustrates the pervasive influence of gut mesenchyme homeobox genes on endoderm differentiation and digestive organogenesis.
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Affiliation(s)
- Michael P. Verzi
- Department of Medical Oncology, Dana-Farber Cancer Institute and Department of Medicine, Harvard Medical School, Boston, MA
| | - Monique N. Stanfel
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
| | - Kelvin A. Moses
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
| | - Byeong-Moo Kim
- Department of Medical Oncology, Dana-Farber Cancer Institute and Department of Medicine, Harvard Medical School, Boston, MA
| | - Yan Zhang
- Department of Systems Biology and Translational Medicine, Texas A&M University, College of Medicine, College Station, TX
| | - Robert J. Schwartz
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, Center for Environmental and Rural Health, Texas A&M University, College of Medicine, College Station, TX, Institute of Biosciences and Technology, Texas A&M University Health Science Center, Houston, Texas 77030, USA
| | - Ramesh A. Shivdasani
- Department of Medical Oncology, Dana-Farber Cancer Institute and Department of Medicine, Harvard Medical School, Boston, MA,Address correspondence to: Warren E. Zimmer, Ph.D., Texas A&M Health Science Center, 310B Joe H. Reynold’s Bldg, College Station, TX 77843, Tel. 617-632-5746 Fax 617-582-8490, OR Ramesh A. Shivdasani, M.D., Ph.D., Dana-Farber Cancer Institute, 44 Binney Street, Boston, MA 02115 Tel. 979-845-2896 Fax 979-862-4638,
| | - Warren E. Zimmer
- Department of Systems Biology and Translational Medicine, Texas A&M University, College of Medicine, College Station, TX, Center for Environmental and Rural Health, Texas A&M University, College of Medicine, College Station, TX,Address correspondence to: Warren E. Zimmer, Ph.D., Texas A&M Health Science Center, 310B Joe H. Reynold’s Bldg, College Station, TX 77843, Tel. 617-632-5746 Fax 617-582-8490, OR Ramesh A. Shivdasani, M.D., Ph.D., Dana-Farber Cancer Institute, 44 Binney Street, Boston, MA 02115 Tel. 979-845-2896 Fax 979-862-4638,
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Matsuyama M, Aizawa S, Shimono A. Sfrp controls apicobasal polarity and oriented cell division in developing gut epithelium. PLoS Genet 2009; 5:e1000427. [PMID: 19300477 PMCID: PMC2649445 DOI: 10.1371/journal.pgen.1000427] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Accepted: 02/17/2009] [Indexed: 01/22/2023] Open
Abstract
Epithelial tubular morphogenesis leading to alteration of organ shape has important physiological consequences. However, little is known regarding the mechanisms that govern epithelial tube morphogenesis. Here, we show that inactivation of Sfrp1 and Sfrp2 leads to reduction in fore-stomach length in mouse embryos, which is enhanced in the presence of the Sfrp5 mutation. In the mono-cell layer of fore-stomach epithelium, cell division is normally oriented along the cephalocaudal axis; in contrast, orientation diverges in the Sfrps-deficient fore-stomach. Cell growth and apoptosis are not affected in the Sfrps-deficient fore-stomach epithelium. Similarly, cell division orientation in fore-stomach epithelium diverges as a result of inactivation of either Stbm/Vangl2, an Fz/PCP component, or Wnt5a. These observations indicate that the oriented cell division, which is controlled by the Fz/PCP pathway, is one of essential components in fore-stomach morphogenesis. Additionally, the small intestine epithelium of Sfrps compound mutants fails to maintain proper apicobasal polarity; the defect was also observed in Wnt5a-inactivated small intestine. In relation to these findings, Sfrp1 physically interacts with Wnt5a and inhibits Wnt5a signaling. We propose that Sfrp regulation of Wnt5a signaling controls oriented cell division and apicobasal polarity in the epithelium of developing gut. The gastrointestinal tract is generated from the primitive gut tube during embryogenesis. The primitive gut differentiates regionally along the cephalocaudal axis. Individual regions simultaneously acquire specific morphologies through morphogenetic mechanisms. The regional specification of the gut tube is controlled by cross-talk between the mesenchyme and epithelium. However, the morphogenetic mechanisms governing gut formation remain poorly understood. Secreted Frizzled-related protein (Sfrp) is an inhibitor of the Wnt pathway, members of which are expressed in the developing gut. A deficiency of Sfrp genes (Sfrp1, Sfrp2, and Sfrp5) results in reduction of fore-stomach length in mice. During normal fore-stomach formation, cell division is oriented along the cephalocaudal axis; in contrast, reduced fore-stomach length in Sfrps-deficient mice is associated with the divergence of oriented cell division in tubular epithelial cells. Thus, oriented cell division is one of the essential components in fore-stomach morphogenesis. In addition, Sfrps-deficient small intestine epithelium fails to maintain proper apicobasal polarity. We also found that Wnt5a-inactivation leads to a phenotype similar to that induced by Sfrps-deficiency in the developing gut, and that Sfrp1 inhibits Wnt5a signaling. We propose that Sfrp regulation of Wnt5a signaling is required for oriented cell division and that it modulates apicobasal polarity in gut epithelium during organ elongation.
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Affiliation(s)
- Makoto Matsuyama
- Vertebrate Body Plan, Center for Developmental Biology, RIKEN Kobe, Minatojima-Minami, Chuou-ku, Kobe, Japan
| | - Shinichi Aizawa
- Vertebrate Body Plan, Center for Developmental Biology, RIKEN Kobe, Minatojima-Minami, Chuou-ku, Kobe, Japan
| | - Akihiko Shimono
- Cancer Science Institute of Singapore, National University of Singapore, Centre for Life Sciences #02-07, Singapore, Singapore
- * E-mail:
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Hibiya K, Katsumoto T, Kondo T, Kitabayashi I, Kudo A. Brpf1, a subunit of the MOZ histone acetyl transferase complex, maintains expression of anterior and posterior Hox genes for proper patterning of craniofacial and caudal skeletons. Dev Biol 2009; 329:176-90. [PMID: 19254709 DOI: 10.1016/j.ydbio.2009.02.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 01/22/2009] [Accepted: 02/18/2009] [Indexed: 11/15/2022]
Abstract
The epigenetic mechanism involving chromatin modification plays a critical role in the maintenance of the expression of Hox genes. Here, we characterize a mutant of the medaka fish, named biaxial symmetries (bis), in which brpf1, a subunit of the MOZ histone acetyl transferase (HAT) complex, is mutated. The bis mutant displayed patterning defects both in the anterior-posterior axis of the craniofacial skeleton and the dorsal-ventral axis of the caudal one. In the anterior region, the bis mutant exhibited craniofacial cartilage homeosis. The expression of Hox genes was decreased in the pharyngeal arches, suggesting that the pharyngeal segmental identities were altered in the bis mutant. In the posterior region, the bis mutant exhibited abnormal patterning of the caudal skeleton, which ectopically formed at the dorsal side of the caudal fin. The expression of Zic genes was decreased at the posterior region, suggesting that the dorsal-ventral axis formation of the posterior trunk was disrupted in the bis mutant. We also found that the MOZ-deficient mice exhibited an abnormal patterning of their craniofacial and cervical skeletons and a decrease of Hox transcripts. We propose a common role of the MOZ HAT complex in vertebrates, a complex which is required for the proper patterning for skeletal development.
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Affiliation(s)
- Kenta Hibiya
- Department of Biological Information, Tokyo Institute of Technology, 4259-B-33 Midori-ku, Nagatsuta, Yokohama 226-8501, Japan
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Zacchetti G, Duboule D, Zakany J. Hox gene function in vertebrate gut morphogenesis: the case of the caecum. Development 2007; 134:3967-73. [PMID: 17942481 DOI: 10.1242/dev.010991] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The digestive tract is made of different subdivisions with various functions. During embryonic development, the developing intestine expresses combinations of Hox genes along its anterior to posterior axis, suggesting a role for these genes in this regionalization process. In particular, the transition from small to large intestine is labelled by the transcription of all Hoxd genes except Hoxd12 and Hoxd13, the latter two genes being transcribed only near the anus. Here, we describe two lines of mice that express Hoxd12 ectopically within this morphological transition. As a consequence, budding of the caecum is impeded, leading to complete agenesis in homozygous individuals. This effect is concurrent with a dramatic reduction of both Fgf10 and Pitx1 expression. Furthermore, the interactions between ;anterior' Hox genes and ectopic Hoxd12 suggest a model whereby anterior and posterior Hox products compete in controlling Fgf10 signalling, which is required for the growth of this organ in mice. These results illuminate components of the genetic cascade necessary for the emergence of this gut segment, crucial for many vertebrates.
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Affiliation(s)
- Giovanna Zacchetti
- National Research Centre 'Frontiers in Genetics', Department of Zoology and Animal Biology, University of Geneva, Sciences III, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
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Theodosiou NA, Hall DA, Jowdry AL. Comparison of acid mucin goblet cell distribution and Hox13 expression patterns in the developing vertebrate digestive tract. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2007; 308:442-53. [PMID: 17538949 DOI: 10.1002/jez.b.21170] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The digestive tract of vertebrates is a complex organ system required for the digestion of food and the absorption of nutrients. The colon evolved as a water absorption organ essential for vertebrates to survive on land. In contrast to land vertebrates, the Chondrichthyes (sharks, skates and rays) are nearly iso-osmotic with their ocean environment and do not reabsorb water from food waste. To understand the origin of the vertebrate colon, we examined the distribution of sulfated and sialyated mucus-producing cells in the little skate, Raja erinacea, as an indication of water absorption function in the chondrichthian digestive tract. The percentage of acid mucin producing goblet cells was analyzed in the spiral valve and hindgut of little skate and the small intestine and colon of mouse embryos. Levels of acid mucins in the hindgut of the little skate was comparable to that of the small intestines of terrestrial vertebrates, whereas the distal region of the spiral valve contained high levels of acid mucin producing cells similar to the colon of mouse and chick. The low numbers of acid mucins in the little skate hindgut confirms that a functional colon for water absorption is absent in the Chondrichthyes. Interestingly, the presence of high levels of acid mucins in the posterior spiral valve provides evidence for a possible primordial water-absorbing organ in the elasmobranchs. Hoxd13 patterns acid mucins in the colons of terrestrial vertebrates. Expression of Hoxd13 and Hoxa13 in R. erinacea suggests conserved roles for Hox genes in patterning the early hindgut.
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Affiliation(s)
- Nicole A Theodosiou
- Department of Biology, Bowdoin College, 6500 College Station, Brunswick, Maine 04011, USA.
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Kim BH, Cho NY, Choi M, Lee S, Jang JJ, Kang GH. Methylation profiles of multiple CpG island loci in extrahepatic cholangiocarcinoma versus those of intrahepatic cholangiocarcinomas. Arch Pathol Lab Med 2007; 131:923-30. [PMID: 17550320 DOI: 10.5858/2007-131-923-mpomci] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2006] [Indexed: 01/16/2023]
Abstract
CONTEXT CpG island hypermethylation is attracting attention because of its importance as a tumor marker and its potential mechanism for the development of human cancers. Extrahepatic cholangiocarcinoma has been poorly investigated with respect to CpG island hypermethylation, and the number of genes known to be methylated in extrahepatic cholangiocarcinomas is fewer than 20. OBJECTIVE To generate methylation profiles of 24 CpG island loci in extrahepatic cholangiocarcinomas, to correlate methylation findings with clinicopathologic findings, and to compare these findings with those of intrahepatic cholangiocarcinomas. DESIGN Sixty-three extrahepatic cholangiocarcinomas and 48 intrahepatic cholangiocarcinomas were investigated for hypermethylation in 24 CpG island loci by using methylation-specific polymerase chain reaction. RESULTS A total of 61 (96.8%) of 63 extrahepatic cholangiocarcinomas showed hypermethylation in at least one of the examined loci, and a high methylation frequency was seen in HOXA1 (95.2%), HPP1 (69.8%), and NEUROG1 (61.9%). The number of methylated CpG island loci was greater in extrahepatic cholangiocarcinomas with nodal metastasis than in those without nodal metastasis (P = .047), and hypermethylation of TIG1 was closely associated with nodal metastasis of extrahepatic cholangiocarcinomas (P = .007). CDH1 and NEUROG1 were more frequently methylated in extrahepatic cholangiocarcinoma than in intrahepatic cholangiocarcinoma, whereas CHFR, GSTP1, IGF2, MGMT, MINT31, p14, and RBP1 were more frequently methylated in intrahepatic cholangiocarcinoma: the differences was statistically significant (P < .05). CONCLUSIONS A close relationship exists between CpG island hypermethylation and nodal metastasis of extrahepatic cholangiocarcinomas. Methylation profiles of extrahepatic cholangiocarcinomas are somewhat similar to but distinct from those of intrahepatic cholangiocarcinomas.
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Affiliation(s)
- Baek-Hee Kim
- Department of Pathology, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul 110-744 South Korea
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