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Severi I, Abbatelli S, Perugini J, Di Mercurio E, Senzacqua M, Giordano A. Butyrylcholinesterase distribution in the mouse gastrointestinal tract: An immunohistochemical study. J Anat 2022; 242:245-256. [PMID: 36004682 PMCID: PMC9877478 DOI: 10.1111/joa.13754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/19/2022] [Accepted: 08/11/2022] [Indexed: 02/01/2023] Open
Abstract
Butyrylcholinesterase (BChE) is a hydrolytic enzyme that together with acetylcholinesterase (AChE) belongs to the cholinesterase family. Whereas AChE has a well-established role in regulating cholinergic neurotransmission in central and peripheral synapses, the physiological role of BChE remains elusive. In this morphological immunohistochemical and double-label confocal microscopy study we investigated the distribution of BChE in the mouse gastrointestinal tract. BChE-positive cells were detected in the liver (both in hepatocytes and cholangiocytes), in the keratinised layers of the squamous epithelium of the oesophagus and forestomach, in the oxyntic mucosa of the stomach, in the mucus-secreting cells of duodenal Brunner glands and the small and large intestinal mucosa. Interestingly, BChE-positive cells were often detected close to gastrointestinal proliferative niches. In the oxyntic mucosa, the close proximity of ghrelin-producing and BChE-positive parietal cells suggests that BChE may be involved in ghrelin hydrolysation through paracrine action. To our knowledge, this is the first comprehensive morphological study performed to gain insight into the physiological role of BChE in the gastrointestinal tract.
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Affiliation(s)
- Ilenia Severi
- Department of Experimental and Clinical MedicineMarche Polytechnic UniversityAnconaItaly
| | - Silvia Abbatelli
- Department of Experimental and Clinical MedicineMarche Polytechnic UniversityAnconaItaly
| | - Jessica Perugini
- Department of Experimental and Clinical MedicineMarche Polytechnic UniversityAnconaItaly
| | - Eleonora Di Mercurio
- Department of Experimental and Clinical MedicineMarche Polytechnic UniversityAnconaItaly
| | - Martina Senzacqua
- Department of Experimental and Clinical MedicineMarche Polytechnic UniversityAnconaItaly
| | - Antonio Giordano
- Department of Experimental and Clinical MedicineMarche Polytechnic UniversityAnconaItaly
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2
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Abnormalities in esophageal smooth muscle induced by mutations in collagen XIX. Histochem Cell Biol 2022; 157:205-216. [PMID: 34993640 DOI: 10.1007/s00418-021-02059-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2021] [Indexed: 11/04/2022]
Abstract
Collagen XIX is a nonfibrillar collagen that localizes in restricted tissues at very low amounts. A previous study on Col19a1 null mice revealed that collagen XIX is involved in esophageal muscle physiology and morphogenesis. Here, we use histological analysis to show that mice with a Col19a1 mutant lacking the NC3 domain and seven collagen triplets display abnormal transition of smooth to striated muscle in the abdominal segment of esophagus, and a widened esophagus with age. With two newly prepared antibodies, we analyzed the expression of collagen XIX in the mouse esophagus and show that collagen XIX colocalizes with α-smooth muscle actin. By immunoelectron microscopy, we confirmed the localization of collagen XIX in esophageal smooth muscle cells. Col19a1 mutant mice contained reduced levels of mutated Col19a1 mRNA. Interestingly, hepatocyte growth factor, which has an important role in esophageal striated muscle development, was reduced in the esophagus of the Col19a1 mutant mice. These findings suggest that collagen XIX may be critical for the function of esophageal smooth muscle cells as a scaffold for anteroposterior migration of esophagus-striated muscle cells.
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3
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Comai G, Heude E, Mella S, Paisant S, Pala F, Gallardo M, Langa F, Kardon G, Gopalakrishnan S, Tajbakhsh S. A distinct cardiopharyngeal mesoderm genetic hierarchy establishes antero-posterior patterning of esophagus striated muscle. eLife 2019; 8:e47460. [PMID: 31535973 PMCID: PMC6752947 DOI: 10.7554/elife.47460] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/27/2019] [Indexed: 02/06/2023] Open
Abstract
In most vertebrates, the upper digestive tract is composed of muscularized jaws linked to the esophagus that permits food ingestion and swallowing. Masticatory and esophagus striated muscles (ESM) share a common cardiopharyngeal mesoderm (CPM) origin, however ESM are unusual among striated muscles as they are established in the absence of a primary skeletal muscle scaffold. Using mouse chimeras, we show that the transcription factors Tbx1 and Isl1 are required cell-autonomously for myogenic specification of ESM progenitors. Further, genetic loss-of-function and pharmacological studies point to MET/HGF signaling for antero-posterior migration of esophagus muscle progenitors, where Hgf ligand is expressed in adjacent smooth muscle cells. These observations highlight the functional relevance of a smooth and striated muscle progenitor dialogue for ESM patterning. Our findings establish a Tbx1-Isl1-Met genetic hierarchy that uniquely regulates esophagus myogenesis and identify distinct genetic signatures that can be used as framework to interpret pathologies arising within CPM derivatives.
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Affiliation(s)
- Glenda Comai
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
| | - Eglantine Heude
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
- Department Adaptation du VivantCNRS/MNHN UMR 7221, Muséum national d’Histoire naturelleParisFrance
| | - Sebastian Mella
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
| | - Sylvain Paisant
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
| | - Francesca Pala
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
- Laboratory of Clinical Immunology and Microbiology (LCIM)National Institutes of HealthBethesdaUnited States
| | - Mirialys Gallardo
- Department of Human GeneticsUniversity of UtahSalt Lake CityUnited States
| | - Francina Langa
- Mouse Genetics Engineering CenterInstitut PasteurParisFrance
| | - Gabrielle Kardon
- Department of Human GeneticsUniversity of UtahSalt Lake CityUnited States
| | - Swetha Gopalakrishnan
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
- Institute of Biotechnology, HiLIFEUniversity of HelsinkiHelsinkiFinland
| | - Shahragim Tajbakhsh
- Department of Developmental and Stem Cell BiologyInstitut PasteurParisFrance
- CNRS UMR 3738ParisFrance
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4
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Algarrahi K, Franck D, Cristofaro V, Yang X, Savarino A, Affas S, Schäfer FM, Ghezzi C, Jennings R, Nedder A, Kaplan DL, Sullivan MP, Estrada CR, Mauney JR. Bi-layer silk fibroin grafts support functional tissue regeneration in a porcine model of onlay esophagoplasty. J Tissue Eng Regen Med 2017; 12:e894-e904. [PMID: 28084044 DOI: 10.1002/term.2402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 11/17/2016] [Accepted: 01/09/2017] [Indexed: 12/27/2022]
Abstract
Partial circumferential, full thickness defects of the esophagus can occur as a result of organ perforation or tumour resection, or during surgical reconstruction of strictured segments. Complications associated with autologous tissue flaps conventionally utilized for defect repair necessitate the development of new graft options. In this study, bi-layer silk fibroin (BLSF) scaffolds were investigated for their potential to support functional restoration of partial circumferential defects in a porcine model of esophageal repair. Onlay thoracic esophagoplasty with BLSF matrices (~3 x 1.5 cm) was performed in adult swine (N = 6) for 3 months of implantation. All animals receiving BLSF grafts survived with no complications and were capable of solid food consumption. Radiographic esophagrams revealed preservation of organ continuity with no evidence of contrast extravasation or strictures. Fluoroscopic analysis demonstrated peristaltic contractions. Ex vivo tissue bath studies displayed contractile responses to carbachol, electric field stimulation, and KCl while isoproterenol produced tissue relaxation. Histological and immunohistochemical evaluations of neotissues showed a stratified, squamous epithelium, a muscularis mucosa composed of smooth muscle bundles, and a muscularis externa organized into circular and longitudinal layers, with a mix of striated skeletal muscle fascicles interspersed with smooth muscle. De novo innervation and vascularization were observed throughout the graft sites and consisted of synaptophysin-positive neuronal boutons and vessels lined with CD31-positive endothelial cells. The results of this study demonstrate that BLSF scaffolds can facilitate constructive remodeling of partial circumferential, full thickness esophageal defects in a large animal model. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Khalid Algarrahi
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Debra Franck
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA
| | - Vivian Cristofaro
- Department of Surgery, Harvard Medical School, Boston, MA, USA.,Division of Urology, Veterans Affairs Boston Healthcare System, West Roxbury, MA, USA.,Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Xuehui Yang
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA
| | - Alyssa Savarino
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA
| | - Saif Affas
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | | | - Chiara Ghezzi
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | | | - Arthur Nedder
- Animal Resource at Children's Hospital, Boston Children's Hospital, Boston, MA, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Maryrose P Sullivan
- Department of Surgery, Harvard Medical School, Boston, MA, USA.,Division of Urology, Veterans Affairs Boston Healthcare System, West Roxbury, MA, USA.,Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Carlos R Estrada
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Joshua R Mauney
- Urological Diseases Research Center, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
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5
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Neuhuber WL, Wörl J. Enteric co-innervation of striated muscle in the esophagus: still enigmatic? Histochem Cell Biol 2016; 146:721-735. [PMID: 27678007 DOI: 10.1007/s00418-016-1500-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2016] [Indexed: 01/10/2023]
Abstract
The existence of a distinct ganglionated myenteric plexus between the two layers of the striated tunica muscularis of the mammalian esophagus has represented an enigma for quite a while. Although an enteric co-innervation of vagally innervated motor endplates in the esophagus has been suggested repeatedly, it was not possible until recently to demonstrate this dual innervation. Twenty-two years ago, we were able to demonstrate that motor endplates in the rat esophagus receive dual innervation from both vagal nerve fibers originating in the brain stem and from varicose enteric nerve fibers originating in the myenteric plexus. Meanwhile, a considerable amount of data has been gathered on enteric co-innervation and its occurrence in the esophagus of a variety of species including humans, its neurochemistry, spatial relationships on motor endplates, ontogeny and possible functional roles. These data underline the significance of this newly discovered innervation component, although its function in vivo is still largely unknown. The aim of this review, which is an update of our previous paper (Wörl and Neuhuber in Histochem Cell Biol 123(2):117-130. doi: 10.1007/s00418-005-0764-7 , 2005a), is to summarize the current knowledge about enteric co-innervation of esophageal striated muscle and to provide some hints as to its functional significance.
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Affiliation(s)
- Winfried L Neuhuber
- Institut für Anatomie I, Friedrich-Alexander Universität Erlangen-Nürnberg, Krankenhausstraße 9, 91054, Erlangen, Germany.
| | - Jürgen Wörl
- Institut für Anatomie I, Friedrich-Alexander Universität Erlangen-Nürnberg, Krankenhausstraße 9, 91054, Erlangen, Germany
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6
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Krauss RS, Chihara D, Romer AI. Embracing change: striated-for-smooth muscle replacement in esophagus development. Skelet Muscle 2016; 6:27. [PMID: 27504178 PMCID: PMC4976477 DOI: 10.1186/s13395-016-0099-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/11/2016] [Indexed: 12/30/2022] Open
Abstract
The esophagus functions to transport food from the oropharyngeal region to the stomach via waves of peristalsis and transient relaxation of the lower esophageal sphincter. The gastrointestinal tract, including the esophagus, is ensheathed by the muscularis externa (ME). However, while the ME of the gastrointestinal tract distal to the esophagus is exclusively smooth muscle, the esophageal ME of many vertebrate species comprises a variable amount of striated muscle. The esophageal ME is initially composed only of smooth muscle, but its developmental maturation involves proximal-to-distal replacement of smooth muscle with striated muscle. This fascinating phenomenon raises two important questions: what is the developmental origin of the striated muscle precursor cells, and what are the cellular and morphogenetic mechanisms underlying the process? Studies addressing these questions have provided controversial answers. In this review, we discuss the development of ideas in this area and recent work that has shed light on these issues. A working model has emerged that should permit deeper understanding of the role of ME development and maturation in esophageal disorders and in the functional and evolutionary underpinnings of the variable degree of esophageal striated myogenesis in vertebrate species.
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Affiliation(s)
- Robert S Krauss
- Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1020, New York, NY 10029 USA
| | - Daisuke Chihara
- Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1020, New York, NY 10029 USA
| | - Anthony I Romer
- Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1020, New York, NY 10029 USA ; Present address: Department of Genetics and Development, Columbia University, 701 West 168th Street, HHSC 1602, New York, NY 10032 USA
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7
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Chihara D, Romer AI, Bentzinger CF, Rudnicki MA, Krauss RS. PAX7 is required for patterning the esophageal musculature. Skelet Muscle 2015; 5:39. [PMID: 26635949 PMCID: PMC4668666 DOI: 10.1186/s13395-015-0068-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/07/2015] [Indexed: 12/12/2022] Open
Abstract
Background The mammalian esophageal musculature is unique in that it makes a transition from smooth to skeletal muscle, with most of this process occurring after birth. In order to better understand the mechanisms that control esophageal musculature development, we investigated the roles in this process of the paired box transcription factor, PAX7, a principal regulator of skeletal myogenic progenitor cells. Previous studies showed that Pax7 is important for determining the esophageal muscle composition. Results We characterized the postnatal development of the esophageal musculature in Pax7−/− mice by analyzing morphology, muscle composition, and the expression of markers of myogenesis, cell proliferation, and apoptosis. Pax7−/− mice displayed megaesophagus with a severe defect in the postnatal developmental process whereby esophageal smooth muscle is replaced by skeletal muscle. Pax7−/− esophagi have substantially reduced skeletal muscle, most likely due to diminished proliferation and premature differentiation of skeletal muscle precursor cells. This impaired the proximal-to-distal progression of skeletal myogenesis and indirectly affected the patterning of the smooth muscle-containing portion of the esophageal musculature. Conclusions Postnatal patterning of the esophageal musculature appears to require robust, PAX7-dependent cell proliferation to drive the proximal-to-distal progression of skeletal myogenesis. This process in turn influences distal smooth muscle morphogenesis and development of the mature pattern of the esophageal musculature. Electronic supplementary material The online version of this article (doi:10.1186/s13395-015-0068-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Daisuke Chihara
- Department of Developmental and Regenerative Biology, Mount Sinai School of Medicine, New York, NY 10029 USA
| | - Anthony I Romer
- Department of Developmental and Regenerative Biology, Mount Sinai School of Medicine, New York, NY 10029 USA ; Graduate School of Biological Sciences, One Gustave L. Levy Place, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA ; Present address: Department of Genetics and Development, Columbia University, 701 West 168th Street, HHSC 1602, New York, NY 10032 USA
| | - C Florian Bentzinger
- Regenerative Medicine Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, K1H 8L6 ON Canada ; Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, K1H 8M5 ON Canada ; Present address: Nestlé Institute of Health Sciences, EPFL Campus, 1015 Lausanne, Switzerland
| | - Michael A Rudnicki
- Regenerative Medicine Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, K1H 8L6 ON Canada ; Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, K1H 8M5 ON Canada
| | - Robert S Krauss
- Department of Developmental and Regenerative Biology, Mount Sinai School of Medicine, New York, NY 10029 USA ; Graduate School of Biological Sciences, One Gustave L. Levy Place, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
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8
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Noe E, Tabeling C, Doehn JM, Naujoks J, Opitz B, Hippenstiel S, Witzenrath M, Klopfleisch R. Juvenile megaesophagus in PKCα-deficient mice is associated with an increase in the segment of the distal esophagus lined by smooth muscle cells. Ann Anat 2014; 196:365-71. [DOI: 10.1016/j.aanat.2014.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/31/2014] [Accepted: 04/01/2014] [Indexed: 12/29/2022]
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9
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Romer AI, Singh J, Rattan S, Krauss RS. Smooth muscle fascicular reorientation is required for esophageal morphogenesis and dependent on Cdo. ACTA ACUST UNITED AC 2013; 201:309-23. [PMID: 23569214 PMCID: PMC3628509 DOI: 10.1083/jcb.201301005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cdo-deficient mice have defects in smooth muscle fascicular reorientation during esophageal morphogenesis, resulting in structural and functional defects including an aberrantly proximal skeletal–smooth muscle boundary and achalasia. Postnatal maturation of esophageal musculature involves proximal-to-distal replacement of smooth muscle with skeletal muscle by elusive mechanisms. We report that this process is impaired in mice lacking the cell surface receptor Cdo and identify the underlying developmental mechanism. A myogenic transition zone containing proliferative skeletal muscle precursor cells migrated in a proximal–distal direction, leaving differentiated myofibers in its wake. Distal to the transition zone, smooth muscle fascicles underwent a morphogenetic process whereby they changed their orientation relative to each other and to the lumen. Consequently, a path was cleared for the transition zone, and smooth muscle ultimately occupied only the distal-most esophagus; there was no loss of smooth muscle. Cdo−/− mice were specifically defective in fascicular reorientation, resulting in an aberrantly proximal skeletal–smooth muscle boundary. Furthermore, Cdo−/− mice displayed megaesophagus and achalasia, and their lower esophageal sphincter was resistant to nitric oxide–induced relaxation, suggesting a developmental linkage between patterning and sphincter function. Collectively, these results illuminate mechanisms of esophageal morphogenesis and motility disorders.
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Affiliation(s)
- Anthony I Romer
- Department of Developmental and Regenerative Biology, Mount Sinai School of Medicine, New York, NY 10029, USA
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10
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He X, Yang WC, Wen XY, Tang D, Xiao L, Han J, Yu B, Zhang W, Mei F. Late embryonic and postnatal development of interstitial cells of cajal in mouse esophagus: distribution, proliferation and kit dependence. Cells Tissues Organs 2012; 196:175-88. [PMID: 22269660 DOI: 10.1159/000332381] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2011] [Indexed: 12/13/2022] Open
Abstract
This paper investigates alterations in interstitial cells of Cajal (ICC) in the esophagus of mice from embryonic day 13.5 (E13.5) to 36 days postpartum (P0-P36) using immunohistochemistry. At E13.5, Kit+ cells presented in clusters and differentiated into spindle-like cells with biopolar processes within the outer (longitudinal) and inner (circular) muscle layers at E17.5. These Kit+ ICC with long processes were also Ano1+ and prominent at birth. The density of ICC gradually decreased, and at P36 it became about one twentieth of that at birth. Kit ligand (stem cell factor) expression is lower in striated muscle cells than that in smooth muscle cells. The ICC number was higher in the distal (close to the cardia) than in the proximal esophagus (close to the pharynx). Some Kit+/Ki67+ and Kit+/bromodeoxyuridine+ cells were observed within the muscle layers, and proliferation persisted from birth through adulthood (P28) with a gradually decreasing cell number. At 24 h, Kit+ ICC were dramatically decreased and almost missing 48 h after administration of imatinib (a Kit inhibitor). Our results indicate that ICC proliferation is age dependent and persists throughout the postnatal period. There is a dramatic decrease in the ICC number from P0 to adult life. The Kit signal is essential for the postnatal development of ICC in the esophagus.
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Affiliation(s)
- Xiao He
- Department of Histology and Embryology, and Development Biology, Third Military Medical University, Chongqing, China
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11
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Abstract
Muscularis externa of mouse esophagus is composed of two skeletal muscle layers in the adult. But less attention is paid to the histogenesis of the muscularis externa of the esophagus, and controversies still exist about the developmental process and the spatio-temporal expression characteristics of muscle-specific proteins during the development of esophageal muscularis externa. To further probe into the developmental pattern of muscularis externa of the mouse esophagus and the expression characteristics of different muscle-specific proteins, immunohistochemical and terminal deoxyribonucleotidyl transferase-mediated deoxyuridine triphosphate (dUTP)-digoxigenin nick-end labeling apoptotic staining methods are used to investigate the expression patterns of different muscle-specific proteins and to elucidate the relationship of these protein expressions with the development of muscularis externa of the mouse esophagus. Thus, an understanding of the developing esophageal muscularis externa may be important for developing therapeutic strategies for the treatment of human esophagus diseases. Serial sections of mouse embryos from embryonic day (ED) 12 to ED18, and full-length esophagi from postnatal first to 5th day were stained with monoclonal antibodies against α-smooth muscle actin (α-SMA), α-sarcomerical actin (α-SCA), desmin, and monoclonal anti-skeletal myosin (MHC), while apoptosis was determined using the terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick-end labeling assay. The expression of α-SMA was started at ED12. During the development of ED14-ED15, α-SMA positive cells were seen extending from the walls of left three, four, and six arch arteries toward the dorsal wall of esophagus. Stronger expression of α-SCA and desmin could be detected at ED14 and ED15, expression intensity in caudal segment and inner layer was stained stronger than that of cranial segment and outer layer, but after ED16, strong expression of α-SCA and desmin was found in the outer layer of muscularis externa. Expression of MHC was first detected in the outer layer of cranial segment of muscularis externa at ED17. At ED18, MHC had extended to the level of thyroid gland, staining intensity in the outer layer and cranial segment was stronger than that of inner layer and caudal segment. One to five days after birth, the thickness of the esophageal muscle layer was obviously increased. Most of the muscle cells in the cranial segment of esophagus showed strong expression of α-SCA and clear cross striations at higher magnification. With progression toward the caudal segment, expression intensity of α-SCA became weaker, but the expression intensity of desmin was the same at different levels of esophagus. The muscle fibers were arranged densely with high expression of MHC in the cranial segment. During the development of esophageal muscularis externa, few apoptotic cells were observed. α-SMA, α-SCA, desmin, and MHC show different expression patterns. The differentiation of outer layer of esophageal muscularis externa is quicker than that of inner layer, and the caudal segment is quicker than that of the cranial segment. Besides, apoptosis may not participate in the development of esophageal muscularis externa. The smooth muscle cells from arch arteries may participate in the development of esophageal muscularis externa.
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Affiliation(s)
- X-M Cao
- Department of Histology and Embryology, Shanxi Medical University, Taiyuan, China
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12
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Rishniw M, Rodriguez P, Que J, Burke ZD, Tosh D, Chen H, Chen X. Molecular aspects of esophageal development. Ann N Y Acad Sci 2011; 1232:309-15. [PMID: 21950820 DOI: 10.1111/j.1749-6632.2011.06071.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The following on molecular aspects of esophageal development contains commentaries on esophageal striated myogenesis and transdifferentiation; conversion from columnar into stratified squamous epithelium in the mouse esophagus; the roles for BMP signaling in the developing esophagus and forestomach; and evidence of a direct conversion from columnar to stratified squamous cells in the developing esophagus.
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Affiliation(s)
- Mark Rishniw
- College of Veterinary Medicine, Department of Biomedical Sciences, Cornell University, Ithaca, New York, USA
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13
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Su PH, Wang TC, Wong ZR, Huang BM, Yang HY. The expression of nestin delineates skeletal muscle differentiation in the developing rat esophagus. J Anat 2011; 218:311-23. [PMID: 21323914 DOI: 10.1111/j.1469-7580.2010.01331.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The muscularis externa of the developing rodent esophagus is initially composed of smooth muscle, and later replaced by skeletal muscle in a craniocaudal progression. There is growing evidence of distinct developmental origins for esophageal smooth and skeletal muscles. However, the identification of skeletal muscle progenitor cells is controversial, and the detailed cell lineage of their descendants remains elusive. In the current study, we carried out multiple labeling immunofluorescence microscopy of nestin and muscle type-specific markers to characterize the dynamic process of rat esophageal myogenesis. The results showed that nestin was transiently expressed in immature esophageal smooth muscle cells in early developing stages. After nestin was downregulated in smooth muscle cells, a distinct population of nestin-positive cells emerged as skeletal muscle precursors. They were mitotically active, and subsequently co-expressed MyoD, followed by the embryonic and later the fast type of skeletal muscle myosin heavy chain. Thus, the cell lineage of esophageal skeletal muscle differentiation was established by an immunotyping approach, which revealed that skeletal myocytes arise from a distinct lineage rather than through transdifferentiation of smooth muscle cells during rat esophageal myogenesis.
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Affiliation(s)
- Peng-Han Su
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
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14
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Katori Y, Cho BH, Song CH, Fujimiya M, Murakami G, Kawase T. Smooth-to-striated muscle transition in human esophagus: an immunohistochemical study using fetal and adult materials. Ann Anat 2009; 192:33-41. [PMID: 20004561 DOI: 10.1016/j.aanat.2009.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 09/21/2009] [Accepted: 09/22/2009] [Indexed: 10/20/2022]
Abstract
BACKGROUND A craniocaudal transition from smooth to striated muscle occurs in the fetal mouse esophagus muscularis propria, until finally the entire muscle component becomes striated. Although no such investigation has been conducted using human fetuses, the transition appears to be incomplete. METHODS In horizontal sections of 10 human fetuses between 9 and 16 weeks of gestation, we identified immunoreactivity for smooth muscle actin (SMA), striated muscle myosin heavy chain (MyH), desmin, PGP9.5, S100 protein, c-kit, and CD68 in the thoracic esophagus. The TUNEL method was used to identify apoptosis. For comparison, the same immunohistochemistry was conducted using 10 adult esophaguses. RESULTS In fetuses at all stages examined, a transition zone was found in the upper thoracic esophagus that was attached to the middle one-third of the trachea. In the transition zone, the MyH-positive longitudinal muscle fibers were surrounded by flat, SMA-positive cells, whereas the MyH-positive circular fibers were sometimes located adjacent to the SMA-positive fibers. However, in adults, smooth muscle tended to be clearly separated from striated muscle. The distribution of cells showing immunoreactivity for PGP9.5, S100 or c-kit did not differ between the oral and anal sides of the transition zone. Desmin was positive in the muscularis propria, but negative in the muscularis mucosae. Neither CD68-positive macrophages nor TUNEL-positive cells were present in the esophagus. CONCLUSIONS In the human esophagus, the smooth-to-striated muscle transition appears to stop at the mid-thoracic level. Cell death or transdifferentiation of smooth muscle appears unlikely, but phenotypic transformation into desmin-positive myofibroblasts is a possibility.
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Affiliation(s)
- Yukio Katori
- Department of Otolaryngology & Head and Neck Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan.
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Rishniw M, Fisher PJ, Doran RM, Bliss SP, Kotlikoff MI. Striated myogenesis and peristalsis in the fetal murine esophagus occur without cell migration or interstitial cells of Cajal. Cells Tissues Organs 2008; 189:410-9. [PMID: 18784410 DOI: 10.1159/000155225] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2008] [Indexed: 11/19/2022] Open
Abstract
Esophageal striated myogenesis progresses differently from appendicular myogenesis, but the mechanism underlying this process is incompletely understood. Early theories of transdifferentiation of smooth muscle into striated muscle are not supported by transgenic fate-mapping experiments; however, the origin of esophageal striated muscle remains unknown. To better define the process of striated myogenesis, we examined myogenesis in murine fetal cultured esophageal whole-organ explants. Embryonic day 14.5 (E14.5) esophagi maintained a functional contractile phenotype for up to 7 days in culture. Striated myogenesis, as evidenced by myogenin expression, proceeded in a craniocaudal direction along the length of the esophagus. Esophageal length did not change during this process. Complete, but not partial, mechanical disruption of the rostral esophagus inhibited myogenesis distally. Addition of fibroblast growth factor-2 (FGF-2) to the culture media failed to inhibit striated myogenesis, but attenuated smooth muscle actin expression and reduced peristaltic activity. Inhibition of c-kit failed to inhibit peristalsis. These results suggest that striated myogenic precursors are resident along the entire length of the esophagus by day 14.5 and do not migrate along the esophagus after E14.5. Induction of myogenesis craniocaudally appears to require physical continuity of the esophagus and is not inhibited by FGF-2. Finally, peristalsis in E14.5 esophagi appears not to be regulated by interstitial cells of Cajal.
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Affiliation(s)
- M Rishniw
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401, USA
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Froese A, Brand T. Expression pattern of Popdc2 during mouse embryogenesis and in the adult. Dev Dyn 2008; 237:780-7. [PMID: 18189275 DOI: 10.1002/dvdy.21431] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The Popdc2 gene is a member of the Popeye domain containing gene family encoding membrane proteins with prominent expression in striated and smooth muscle tissue. After introducing a LacZ reporter gene into the Popdc2 locus, expression was studied during embryonic development and postnatal life. At embryonic day (E) 7.5, expression was present in cardiac and extraembryonic mesoderm. At E10.5, expression was found in heart, somites, and mesothelial cells lining the coelom. At E12.5, expression was present in the coelomic mesothelium, pericardial and myocardial layer of the heart, skeletal muscle, bladder, gut, and umbilical vessels. Postnatal expression was found in cardiac and skeletal muscle and in the smooth muscle layer of colon, rectum, and bladder. In the stomach, Popdc2 was exclusively present in the pyloric epithelium. In conclusion, Popdc2 is expressed in various muscle and nonmuscle cell types during embryonic development and in postnatal life.
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Affiliation(s)
- Alexander Froese
- Cell and Developmental Biology, Theodor-Boveri-Institute of Biological Sciences, University of Würzburg, Würzburg, Germany
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