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Rzeszotek S, Trybek G, Tarnowski M, Serwin K, Jaroń A, Schneider G, Kolasa A, Wiszniewska B. Colostrum-Induced Temporary Changes in the Expression of Proteins Regulating the Epithelial Barrier Function in the Intestine. Foods 2022; 11:foods11050685. [PMID: 35267318 PMCID: PMC8909690 DOI: 10.3390/foods11050685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/18/2022] [Accepted: 02/23/2022] [Indexed: 02/04/2023] Open
Abstract
The intestinal wall and epithelial cells are interconnected by numerous intercellular junctions. Colostrum (Col), in its natural form, is a secretion of the mammary gland of mammals at the end of pregnancy and up to 72 h after birth. Recently, it has been used as a biologically active dietary supplement with a high content of lactoferrin (Lf). Lf, a glycoprotein with a broad spectrum of activity, is becoming more popular in health-promoting supplements. This study aims to investigate whether Col supplementation can affect small and large intestine morphology by modulating the expression of selected proteins involved in tissue integrity. We examined the thickness of the epithelium, and the length of the microvilli, and assessed the expression of CDH1, CDH2, CTNNB, CX43, VCL, OCLN, HP, MYH9, and ACTG2 gene levels using qRT-PCR and at the protein level using IHC. Additionally, to evaluate whether the effect of Col supplementation is temporary or persistent, we performed all analyses on tissues collected from animals receiving Col for 1, 3, or 6 months. We noticed a decrease in CDH1 and CDH2 expression, especially after 3 months of supplementation in the large intestine and in CTNNB in the small intestine as well as increased levels of CX43 and CTNNB1 in the small intestine. The present data indicate that Col can temporarily alter some components of the cell adhesion molecules involved in the formation of the cellular barrier.
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Affiliation(s)
- Sylwia Rzeszotek
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp., 70-111 Szczecin, Poland; (A.K.); (B.W.)
- Correspondence: ; Tel.: +48-663-861-490
| | - Grzegorz Trybek
- Department of Oral Surgery, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp., 70-111 Szczecin, Poland; (G.T.); (A.J.)
| | - Maciej Tarnowski
- Department of Physiology, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp., 70-111 Szczecin, Poland;
| | - Karol Serwin
- Department of Infectious Tropical Diseases and Immune Deficiency, Pomeranian Medical University in Szczecin, Arkońska 4, 71-455 Szczecin, Poland;
| | - Aleksandra Jaroń
- Department of Oral Surgery, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp., 70-111 Szczecin, Poland; (G.T.); (A.J.)
| | - Gabriela Schneider
- UofL Health-Brown Cancer Center and Division of Medical Oncology and Hematology, Department of Medicine, University of Louisville, Louisville, KY 40202, USA;
| | - Agnieszka Kolasa
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp., 70-111 Szczecin, Poland; (A.K.); (B.W.)
| | - Barbara Wiszniewska
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp., 70-111 Szczecin, Poland; (A.K.); (B.W.)
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Mucosal Epithelial Jak Kinases in Health and Diseases. Mediators Inflamm 2021; 2021:6618924. [PMID: 33814980 PMCID: PMC7990561 DOI: 10.1155/2021/6618924] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/02/2021] [Accepted: 03/06/2021] [Indexed: 12/22/2022] Open
Abstract
Janus kinases (Jaks) are a family of nonreceptor tyrosine kinase that include four different members, viz., Jak1, Jak2, Jak3, and Tyk2. Jaks play critical roles in immune cells functions; however, recent studies suggest they also play essential roles in nonimmune cell physiology. This review highlights the significance of epithelial Jaks in understanding the molecular basis of some of the diseases through regulation of epithelial-mesenchymal transition, cell survival, cell growth, development, and differentiation. Growth factors and cytokines produced by the cells of hematopoietic origin use Jak kinases for signal transduction in both immune and nonimmune cells. Among Jaks, Jak3 is widely expressed in both immune cells and in intestinal epithelial cells (IECs) of both humans and mice. Mutations that abrogate Jak3 functions cause an autosomal severe combined immunodeficiency disease (SCID) while activating Jak3 mutations lead to the development of hematologic and epithelial cancers. A selective Jak3 inhibitor CP-690550 (Xeljanz) approved by the FDA for certain chronic inflammatory conditions demonstrates immunosuppressive activity in rheumatoid arthritis, psoriasis, and organ transplant rejection. Here, we also focus on the consequences of Jak3-directed drugs on adverse effects in light of recent discoveries in mucosal epithelial functions of Jak3 with some information on other Jaks. Lastly, we brief on structural implications of Jak3 domains beyond the immune cells. As information about the roles of Jak3 in gastrointestinal functions and associated diseases are only just emerging, in the review, we summarize its implications in gastrointestinal wound repair, inflammatory bowel disease, obesity-associated metabolic syndrome, and epithelial cancers. Lastly, we shed lights on identifying potential novel targets in developing therapeutic interventions of diseases associated with dysfunctional IEC.
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Lee HS, Lee J, Smolensky D, Lee SH. Potential benefits of patchouli alcohol in prevention of human diseases: A mechanistic review. Int Immunopharmacol 2020; 89:107056. [PMID: 33039955 PMCID: PMC7543893 DOI: 10.1016/j.intimp.2020.107056] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/16/2020] [Accepted: 09/26/2020] [Indexed: 12/18/2022]
Abstract
Patchouli alcohol (PA) is a bioactive component in essential oil extracted from Pogostemon cablin. The present review provides the scientific mechanisms for health beneficial activities of PA in diverse disease models. PA possesses diverse health beneficial activities.
Patchouli alcohol (PA), a tricyclic sesquiterpene, is a dominant bioactive component in oil extracted from the aerial parts of Pogostemon cablin (patchouli). Diverse beneficial activities have been reported, including anti-influenza virus, anti-depressant, anti-nociceptive, vasorelaxation, lung protection, brain protection, anti-ulcerogenic, anti-colitis, pre-biotic-like, anti-inflammatory, anti-cancer and protective activities against metabolic diseases. However, detailed mechanistic studies are required to explore the possibility of developing PA as a functional food material or promising drug for the prevention and treatment of human diseases. This review highlights multiple molecular targets and working mechanisms by which PA mediates health benefits.
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Affiliation(s)
- Hee-Seop Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA
| | - Jihye Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA
| | - Dmitriy Smolensky
- Grain Quality and Structure Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Manhattan, KS 66502, USA
| | - Seong-Ho Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA.
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4
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Jin Y, Blikslager AT. The Regulation of Intestinal Mucosal Barrier by Myosin Light Chain Kinase/Rho Kinases. Int J Mol Sci 2020; 21:ijms21103550. [PMID: 32443411 PMCID: PMC7278945 DOI: 10.3390/ijms21103550] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 12/19/2022] Open
Abstract
The intestinal epithelial apical junctional complex, which includes tight and adherens junctions, contributes to the intestinal barrier function via their role in regulating paracellular permeability. Myosin light chain II (MLC-2), has been shown to be a critical regulatory protein in altering paracellular permeability during gastrointestinal disorders. Previous studies have demonstrated that phosphorylation of MLC-2 is a biochemical marker for perijunctional actomyosin ring contraction, which increases paracellular permeability by regulating the apical junctional complex. The phosphorylation of MLC-2 is dominantly regulated by myosin light chain kinase- (MLCK-) and Rho-associated coiled-coil containing protein kinase- (ROCK-) mediated pathways. In this review, we aim to summarize the current state of knowledge regarding the role of MLCK- and ROCK-mediated pathways in the regulation of the intestinal barrier during normal homeostasis and digestive diseases. Additionally, we will also suggest potential therapeutic targeting of MLCK- and ROCK-associated pathways in gastrointestinal disorders that compromise the intestinal barrier.
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Affiliation(s)
- Younggeon Jin
- Department of Animal and Avian Sciences, College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA;
| | - Anthony T. Blikslager
- Department of Clinical Sciences, Comparative Medicine Institute, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
- Correspondence:
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Punovuori K, Migueles RP, Malaguti M, Blin G, Macleod KG, Carragher NO, Pieters T, van Roy F, Stemmler MP, Lowell S. N-cadherin stabilises neural identity by dampening anti-neural signals. Development 2019; 146:dev.183269. [PMID: 31601548 PMCID: PMC6857587 DOI: 10.1242/dev.183269] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 09/18/2019] [Indexed: 12/31/2022]
Abstract
A switch from E- to N-cadherin regulates the transition from pluripotency to neural identity, but the mechanism by which cadherins regulate differentiation was previously unknown. Here, we show that the acquisition of N-cadherin stabilises neural identity by dampening anti-neural signals. We use quantitative image analysis to show that N-cadherin promotes neural differentiation independently of its effects on cell cohesiveness. We reveal that cadherin switching diminishes the level of nuclear β-catenin, and that N-cadherin also dampens FGF activity and consequently stabilises neural fate. Finally, we compare the timing of cadherin switching and differentiation in vivo and in vitro, and find that this process becomes dysregulated during in vitro differentiation. We propose that N-cadherin helps to propagate a stable neural identity throughout the emerging neuroepithelium, and that dysregulation of this process contributes to asynchronous differentiation in culture. Summary: As pluripotent cells undergo neural differentiation they swap E-cadherin for N-cadherin. This switch in adhesion molecules modulates signalling in order to facilitate the differentiation process.
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Affiliation(s)
- Karolina Punovuori
- MRC Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Rosa P Migueles
- MRC Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Mattias Malaguti
- MRC Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Guillaume Blin
- MRC Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Kenneth G Macleod
- Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Neil O Carragher
- Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Tim Pieters
- Department of Biomedical Molecular Biology, Ghent University; Inflammation Research Center, VIB; Center for Medical Genetics, Ghent University Hospital; Cancer Research Institute Ghent (CRIG), Ghent B-9000, Belgium
| | - Frans van Roy
- Department of Biomedical Molecular Biology, Ghent University; Inflammation Research Center, VIB; Cancer Research Institute Ghent (CRIG), Ghent B-9000, Belgium
| | - Marc P Stemmler
- Department of Experimental Medicine I, Nikolaus-Fiebiger Center for Molecular Medicine, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen D-91054, Germany
| | - Sally Lowell
- MRC Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH16 4UU, UK
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Leong W, Huang G, Khan I, Xia W, Li Y, Liu Y, Li X, Han R, Su Z, Hsiao WLW. Patchouli Essential Oil and Its Derived Compounds Revealed Prebiotic-Like Effects in C57BL/6J Mice. Front Pharmacol 2019; 10:1229. [PMID: 31680986 PMCID: PMC6812344 DOI: 10.3389/fphar.2019.01229] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 09/24/2019] [Indexed: 12/12/2022] Open
Abstract
Pogostemon cablin (Blanco) Benth (PC) is a Chinese medicinal plant traditionally used for the treatment of gastrointestinal symptoms. To investigate the prebiotic effect of patchouli essential oil (PEO) and its derived compounds through the modulation of gut microbiota (GM). C57BL/6J mice were treated with the PEO and three active components of PEO, i.e. patchouli alcohol (PA), pogostone (PO) and β-patchoulene (β-PAE) for 15 consecutive days. Fecal samples and mucosa were collected for GM biomarkers studies. PEO, PA, PO, and β-PAE improve the gut epithelial barrier by altering the status of E-cadherin vs. N-cadherin expressions, and increasing the mucosal p-lysozyme and Muc 2. Moreover, the treatments also facilitate the polarization of M1 to M2 macrophage phenotypes, meanwhile, suppress the pro-inflammatory cytokines. Fecal microbial DNAs were analyzed and evaluated for GM composition by ERIC-PCR and 16S rRNA amplicon sequencing. The GM diversity was increased with the treated groups compared to the control. Further analysis showed that some known short chain fatty acids (SCFAs)-producing bacteria, e.g. Anaerostipes butyraticus, Butytivibrio fibrisolvens, Clostridium jejuense, Eubacterium uniforme, and Lactobacillus lactis were significantly enriched in the treated groups. In addition, the key SCFAs receptors, GPR 41, 43 and 109a, were significantly stimulated in the gut epithelial layer of the treated mice. By contract, the relative abundance of pathogens Sutterlla spp., Fusobacterium mortiferum, and Helicobacter spp. were distinctly reduced by the treatments with PEO and β-PAE. Our findings provide insightful information that the microbiota/host dynamic interaction may play a key role for the pharmacological activities of PEO, PA, PO, and β-PAE.
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Affiliation(s)
- Waikit Leong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Guoxin Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Imran Khan
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Wenrui Xia
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Yucui Li
- Guangdong Provincial Key Laboratory of New Chinese Medicinal Development and Research, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuhong Liu
- Guangdong Provincial Key Laboratory of New Chinese Medicinal Development and Research, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoang Li
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Ruixuan Han
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Ziren Su
- Guangdong Provincial Key Laboratory of New Chinese Medicinal Development and Research, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - W L Wendy Hsiao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
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Martyn I, Brivanlou AH, Siggia ED. A wave of WNT signaling balanced by secreted inhibitors controls primitive streak formation in micropattern colonies of human embryonic stem cells. Development 2019; 146:dev172791. [PMID: 30814117 PMCID: PMC6451321 DOI: 10.1242/dev.172791] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/20/2019] [Indexed: 01/03/2023]
Abstract
Long-range signaling by morphogens and their inhibitors define embryonic patterning yet quantitative data and models are rare, especially in humans. Here, we use a human embryonic stem cell micropattern system to model formation of the primitive streak (PS) by WNT. In the pluripotent state, E-cadherin (E-CAD) transduces boundary forces to focus WNT signaling to the colony border. Following application of WNT ligand, E-CAD mediates a front or wave of epithelial-to-mesenchymal (EMT) conversion analogous to PS extension in an embryo. By knocking out the secreted WNT inhibitors active in our system, we show that DKK1 alone controls the extent and duration of patterning. The NODAL inhibitor cerberus 1 acts downstream of WNT to refine the endoderm versus mesoderm fate choice. Our EMT wave is a generic property of a bistable system with diffusion and we present a single quantitative model that describes both the wave and our knockout data.
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Affiliation(s)
- Iain Martyn
- Laboratory of Molecular Vertebrate Embryology, The Rockefeller University, New York, NY 10065, USA
- Center for Studies in Physics and Biology, The Rockefeller University, New York, NY 10065, USA
| | - Ali H Brivanlou
- Laboratory of Molecular Vertebrate Embryology, The Rockefeller University, New York, NY 10065, USA
| | - Eric D Siggia
- Center for Studies in Physics and Biology, The Rockefeller University, New York, NY 10065, USA
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Abstract
Recently, several lines of evidence that indicate a strong link between the development of colorectal cancer (CRC) and aspects of the gut microbiota have become apparent. However, it remains unclear how changes in the gut microbiota might influence carcinogenesis or how regional organization of the gut might influence the microbiota. In this review, we discuss several leading theories that connect gut microbial dysbiosis with CRC and set this against a backdrop of what is known about proximal-distal gut physiology and the pathways of CRC development and progression. Finally, we discuss the potential for gut microbial modulation therapies, for example, probiotics, antibiotics, and others, to target and improve gut microbial dysbiosis as a strategy for the prevention or treatment of CRC.
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9
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Mishra J, Das JK, Kumar N. Janus kinase 3 regulates adherens junctions and epithelial mesenchymal transition through β-catenin. J Biol Chem 2017; 292:16406-16419. [PMID: 28821617 PMCID: PMC5633104 DOI: 10.1074/jbc.m117.811802] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Indexed: 12/22/2022] Open
Abstract
Compromise in adherens junctions (AJs) is associated with several chronic inflammatory diseases. We reported previously that Janus kinase 3, a non-receptor tyrosine kinase, plays a crucial role in AJ formation through its interaction with β-catenin. In this report, we characterize the structural determinants responsible for Jak3 interactions with β-catenin and determine the functional implications of previously unknown tyrosine residues on β-catenin phosphorylated by Jak3. We demonstrate that Jak3 autophosphorylation was the rate-limiting step during Jak3 trans-phosphorylation of β-catenin, where Jak3 directly phosphorylated three tyrosine residues, viz. Tyr30, Tyr64, and Tyr86 in the N-terminal domain (NTD) of β-catenin. However, prior phosphorylation of β-catenin at Tyr654 was essential for further phosphorylation of β-catenin by Jak3. Interaction studies indicated that phosphorylated Jak3 bound to phosphorylated β-catenin with a dissociation constant of 0.28 μm, and although both the kinase and FERM (Band 41, ezrin, radixin, and moesin) domains of Jak3 interacted with β-catenin, the NTD domain of β-catenin facilitated its interactions with Jak3. Physiologically, Jak3-mediated phosphorylation of β-catenin suppressed EGF-mediated epithelial-mesenchymal transition and facilitated epithelial barrier functions by AJ localization of phosphorylated β-catenin through its interactions with α-catenin. Moreover, loss of Jak3-mediated phosphorylation sites in β-catenin abrogated its AJ localization and compromised epithelial barrier functions. Thus, we not only characterize Jak3 interaction with β-catenin but also demonstrate the mechanism of molecular interplay between AJ dynamics and EMT by Jak3-mediated NTD phosphorylation of β-catenin.
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Affiliation(s)
- Jayshree Mishra
- From the Department of Pharmaceutical Sciences, ILR College of Pharmacy, Texas A&M Health Science Center, Kingsville Texas 78363
| | - Jugal Kishore Das
- From the Department of Pharmaceutical Sciences, ILR College of Pharmacy, Texas A&M Health Science Center, Kingsville Texas 78363
| | - Narendra Kumar
- From the Department of Pharmaceutical Sciences, ILR College of Pharmacy, Texas A&M Health Science Center, Kingsville Texas 78363
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10
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Design of a nanocomposite substrate inducing adult stem cell assembly and progression toward an Epiblast-like or Primitive Endoderm-like phenotype via mechanotransduction. Biomaterials 2017; 144:211-229. [PMID: 28841465 DOI: 10.1016/j.biomaterials.2017.08.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 08/01/2017] [Accepted: 08/13/2017] [Indexed: 01/10/2023]
Abstract
This work shows that the active interaction between human umbilical cord matrix stem cells and Poly (l-lactide)acid (PLLA) and PLLA/Multi Walled Carbon Nanotubes (MWCNTs) nanocomposite films results in the stem cell assembly as a spheroid conformation and affects the stem cell fate transition. We demonstrated that spheroids directly respond to a tunable surface and the bulk properties (electric, dielectric and thermal) of plain and nanocomposite PLLA films by triggering a mechanotransduction axis. This stepwise process starts from tethering of the cells' focal adhesion proteins to the surface, together with the adherens junctions between cells. Both complexes transmit traction forces to F-Actin stress fibres that link Filamin-A and Myosin-IIA proteins, generating a biological scaffold, with increased stiffening conformation from PLLA to PLLA/MWCNTs, and enable the nucleoskeleton proteins to boost chromatin reprogramming processes. Herein, the opposite expression of NANOG and GATA6 transcription factors, together with other lineage specification related proteins, steer spheroids toward an Epiblast-like or Primitive Endoderm-like lineage commitment, depending on the absence or presence of 1 wt% MWCNTs, respectively. This work represents a pioneering effort to create a stem cell/material interface that can model the stem cell fate transition under growth culture conditions.
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11
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Meinicke H, Bremser A, Brack M, Akeus P, Pearson C, Bullers S, Hoffmeyer K, Stemmler MP, Quiding-Järbrink M, Izcue A. Tumour-associated changes in intestinal epithelial cells cause local accumulation of KLRG1 + GATA3 + regulatory T cells in mice. Immunology 2017; 152:74-88. [PMID: 28437001 DOI: 10.1111/imm.12750] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 04/13/2017] [Accepted: 04/19/2017] [Indexed: 12/18/2022] Open
Abstract
CD4+ Foxp3+ regulatory T (Treg) cells include differentiated populations of effector Treg cells characterized by the expression of specific transcription factors. Tumours, including intestinal malignancies, often present with local accumulation of Treg cells that can prevent tumour clearance, but how tumour progression leads to Treg cell accumulation is incompletely understood. Here using genetically modified mouse models we show that ablation of E-cadherin, a process associated with epithelial to mesenchymal transition and tumour progression, promotes the accumulation of intestinal Treg cells by the specific accumulation of the KLRG1+ GATA3+ Treg subset. Epithelial E-cadherin ablation activates the β-catenin pathway, and we find that increasing β-catenin signals in intestinal epithelial cells also boosts Treg cell frequencies through local accumulation of KLRG1+ GATA3+ Treg cells. Both E-cadherin ablation and increased β-catenin signals resulted in epithelial cells with higher levels of interleukin-33, a cytokine that preferentially expands KLRG1+ GATA3+ Treg cells. Tumours often present reduced E-cadherin expression and increased β-catenin signalling and interleukin-33 production. Accordingly, Treg cell accumulation in intestinal tumours from APCmin/+ mice was exclusively due to the increase in KLRG1+ GATA3+ Treg cells. Our data identify a novel axis through which epithelial cells control local Treg cell subsets, which may be activated during intestinal tumorigenesis.
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Affiliation(s)
- Holger Meinicke
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.,Centre for Chronic Immunodeficiency (CCI), University Medical Centre Freiburg and University of Freiburg, Freiburg, Germany.,Department of Pediatrics and Adolescent Medicine, Division of General Pediatrics, University Medical Centre, Freiburg, Germany
| | - Anna Bremser
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.,Centre for Chronic Immunodeficiency (CCI), University Medical Centre Freiburg and University of Freiburg, Freiburg, Germany
| | - Maria Brack
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.,Centre for Chronic Immunodeficiency (CCI), University Medical Centre Freiburg and University of Freiburg, Freiburg, Germany
| | - Paulina Akeus
- Department of Microbiology and Immunology, Institute of Biomedicine, The Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden
| | - Claire Pearson
- The Kennedy Institute of Rheumatology, University of Oxford, Headington, Oxford, UK
| | - Samuel Bullers
- The Kennedy Institute of Rheumatology, University of Oxford, Headington, Oxford, UK
| | - Katrin Hoffmeyer
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Marc P Stemmler
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Marianne Quiding-Järbrink
- Department of Microbiology and Immunology, Institute of Biomedicine, The Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden
| | - Ana Izcue
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.,Centre for Chronic Immunodeficiency (CCI), University Medical Centre Freiburg and University of Freiburg, Freiburg, Germany
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12
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Basilicata MF, Frank M, Solter D, Brabletz T, Stemmler MP. Inappropriate cadherin switching in the mouse epiblast compromises proper signaling between the epiblast and the extraembryonic ectoderm during gastrulation. Sci Rep 2016; 6:26562. [PMID: 27217206 PMCID: PMC4877576 DOI: 10.1038/srep26562] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/05/2016] [Indexed: 11/09/2022] Open
Abstract
Cadherin switching from E-cadherin (E-cad) to N-cadherin (N-cad) is a key step of the epithelial-mesenchymal transition (EMT) processes that occurs during gastrulation and cancer progression. We investigate whether cadherins actively participate in progression of EMT by crosstalk to signaling pathways. We apply ectopic cadherin switching before the onset of mouse gastrulation. Mutants with an induced E-cad to N-cad switch (Ncadki) die around E8.5. Severe morphological changes including a small epiblast, a rounded shape, an enlarged extra-embryonic compartment and lack of the amnion, combined with a massive cell detachment from the ectodermal layer are detected. In contrast to epiblast-specific E-cad depletion, gastrulation is initiated in Ncadki embryos, but patterning of the germ-layers is abnormal. An overall reduction in BMP signaling, expansion of Nodal and Eomes domains, combined with reduced Wnt3a expression at the primitive streak is observed. Our results show that in addition to cadherin-dependent adhesion, proper embryonic development requires E-cad mediated signaling function to facilitate a feedback loop that stabilizes Bmp4 and Bmp2 expression in the extraembryonic ectoderm and sustained downstream activity in the epiblast. Moreover, for proper morphogenesis a fine-tuned spatio-temporal control of cadherin switching is required during EMT at gastrulation to avoid premature cell detachment and migration.
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Affiliation(s)
- M Felicia Basilicata
- Department of Molecular Embryology, Max-Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, 79108 Freiburg, Germany
| | - Marcus Frank
- Electron Microscopy Center, University Medicine Rostock, Strempelstr. 14, 18057 Rostock, Germany
| | - Davor Solter
- Epithelial Epigenetics and Development Lab, Institute of Medical Biology, A*STAR, Singapore
| | - Thomas Brabletz
- Department of Experimental Medicine I, Nikolaus-Fiebiger Center for Molecular Medicine, University of Erlangen-Nürnberg, Glückstr. 6, 91054 Erlangen, Germany
| | - Marc P Stemmler
- Department of Molecular Embryology, Max-Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, 79108 Freiburg, Germany.,Department of Experimental Medicine I, Nikolaus-Fiebiger Center for Molecular Medicine, University of Erlangen-Nürnberg, Glückstr. 6, 91054 Erlangen, Germany
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13
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Schneider MR, Kolligs FT. E-cadherin's role in development, tissue homeostasis and disease: Insights from mouse models: Tissue-specific inactivation of the adhesion protein E-cadherin in mice reveals its functions in health and disease. Bioessays 2014; 37:294-304. [PMID: 25449798 DOI: 10.1002/bies.201400141] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recent studies uncovered critical roles of the adhesion protein E-cadherin in health and disease. Global inactivation of Cdh1, the gene encoding E-cadherin in mice, results in early embryonic lethality due to an inability to form the trophectodermal epithelium. To unravel E-cadherin's functions beyond development, numerous mouse lines with tissue-specific disruption of Cdh1 have been generated. The consequences of E-cadherin loss showed great variability depending on the tissue in question, ranging from nearly undetectable changes to a complete loss of tissue structure and function. This review focuses on these studies and discusses how they provided important insights into E-cadherin's role in cell adhesion, proliferation and differentiation, and its consequences for biological processes as epithelial-to-mesenchymal transition, vascularization, and carcinogenesis. Lastly, we present some perspectives and possible approaches for future research.
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Affiliation(s)
- Marlon R Schneider
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Germany
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14
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Guan X, Bidlack FB, Stokes N, Bartlett JD. E-cadherin can replace N-cadherin during secretory-stage enamel development. PLoS One 2014; 9:e102153. [PMID: 25014356 PMCID: PMC4094553 DOI: 10.1371/journal.pone.0102153] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 06/16/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND N-cadherin is a cell-cell adhesion molecule and deletion of N-cadherin in mice is embryonic lethal. During the secretory stage of enamel development, E-cadherin is down-regulated and N-cadherin is specifically up-regulated in ameloblasts when groups of ameloblasts slide by one another to form the rodent decussating enamel rod pattern. Since N-cadherin promotes cell migration, we asked if N-cadherin is essential for ameloblast cell movement during enamel development. METHODOLOGY/PRINCIPAL FINDINGS The enamel organ, including its ameloblasts, is an epithelial tissue and for this study a mouse strain with N-cadherin ablated from epithelium was generated. Enamel from wild-type (WT) and N-cadherin conditional knockout (cKO) mice was analyzed. μCT and scanning electron microscopy showed that thickness, surface structure, and prism pattern of the cKO enamel looked identical to WT. No significant difference in hardness was observed between WT and cKO enamel. Interestingly, immunohistochemistry revealed the WT and N-cadherin cKO secretory stage ameloblasts expressed approximately equal amounts of total cadherins. Strikingly, E-cadherin was not normally down-regulated during the secretory stage in the cKO mice suggesting that E-cadherin can compensate for the loss of N-cadherin. Previously it was demonstrated that bone morphogenetic protein-2 (BMP2) induces E- and N-cadherin expression in human calvaria osteoblasts and we show that the N-cadherin cKO enamel organ expressed significantly more BMP2 and significantly less of the BMP antagonist Noggin than did WT enamel organ. CONCLUSIONS/SIGNIFICANCE The E- to N-cadherin switch at the secretory stage is not essential for enamel development or for forming the decussating enamel rod pattern. E-cadherin can substitute for N-cadherin during these developmental processes. Bmp2 expression may compensate for the loss of N-cadherin by inducing or maintaining E-cadherin expression when E-cadherin is normally down-regulated. Notably, this is the first demonstration of a natural endogenous increase in E-cadherin expression due to N-cadherin ablation in a healthy developing tissue.
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Affiliation(s)
- Xiaomu Guan
- Department of Mineralized Tissue Biology and Harvard School of Dental Medicine, The Forsyth Institute, Cambridge, Massachusetts, United States of America
| | - Felicitas B. Bidlack
- Department of Mineralized Tissue Biology and Harvard School of Dental Medicine, The Forsyth Institute, Cambridge, Massachusetts, United States of America
| | - Nicole Stokes
- Laboratory of Mammalian Cell Biology and Development, Howard Hughes Medical Institute, The Rockefeller University, New York, New York, United States of America
| | - John D. Bartlett
- Department of Mineralized Tissue Biology and Harvard School of Dental Medicine, The Forsyth Institute, Cambridge, Massachusetts, United States of America
- * E-mail:
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15
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Abstract
Loss of cadherin 1 (CDH1; also known as epithelial cadherin (E-cadherin)) is used for the diagnosis and prognosis of epithelial cancers. However, it should not be ignored that the superfamily of transmembrane cadherin proteins encompasses more than 100 members in humans, including other classical cadherins, numerous protocadherins and cadherin-related proteins. Elucidation of their roles in suppression versus initiation or progression of various tumour types is a young but fascinating field of molecular cancer research. These cadherins are very diverse in both structure and function, and their mutual interactions seem to influence biological responses in complex and versatile ways.
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Affiliation(s)
- Frans van Roy
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.The Inflammation Research Center, VIB, B-9052 Ghent, Belgium
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16
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Adhesion, but not a specific cadherin code, is indispensable for ES cell and induced pluripotency. Stem Cell Res 2013; 11:1250-63. [DOI: 10.1016/j.scr.2013.08.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 06/24/2013] [Accepted: 08/17/2013] [Indexed: 10/26/2022] Open
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17
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Hase K, Nakatsu F, Ohmae M, Sugihara K, Shioda N, Takahashi D, Obata Y, Furusawa Y, Fujimura Y, Yamashita T, Fukuda S, Okamoto H, Asano M, Yonemura S, Ohno H. AP-1B-mediated protein sorting regulates polarity and proliferation of intestinal epithelial cells in mice. Gastroenterology 2013; 145:625-35. [PMID: 23684748 DOI: 10.1053/j.gastro.2013.05.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 05/10/2013] [Accepted: 05/14/2013] [Indexed: 12/28/2022]
Abstract
BACKGROUND & AIMS In epithelial cells, protein sorting mechanisms regulate localization of plasma membrane proteins that generate and maintain cell polarity. The clathrin-adaptor protein (AP) complex AP-1B is expressed specifically in polarized epithelial cells, where it regulates basolateral sorting of membrane proteins. However, little is known about its physiological significance. METHODS We analyzed the intestinal epithelia of mice deficient in Ap1m2 (Ap1m2(-/-) mice), which encodes the AP-1B μ1B subunit, and compared it with 129/B6/CD1 littermates (controls). Notch signaling was inhibited by intraperitoneal injection of dibenzazepine, and β-catenin signaling was inhibited by injection of IWR1. Intestinal tissue samples were collected and analyzed by immunofluorescence analysis. RESULTS Ap1m2(-/-) mice developed intestinal epithelial cell hyperplasia. The polarity of intestinal epithelial cells was disrupted, as indicated by the appearance of ectopic microvilli-like structures on the lateral plasma membrane and mislocalization of basolateral membrane proteins, including the low-density lipoprotein receptor and E-cadherin. The E-cadherin-β-catenin complex therefore was disrupted at the adherens junction, resulting in nuclear translocation of β-catenin. This resulted in up-regulation of genes regulated by β-catenin/transcription factor 4 (Tcf4) complex, and increased the proliferation of intestinal epithelial cells. CONCLUSIONS AP-1B is required for protein sorting and polarization of intestinal cells in mice. Loss of AP-1B in the intestinal epithelia results in mislocalization of E-cadherin, activation of β-catenin/Tcf4 complex, proliferation, and hyperplasia.
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Affiliation(s)
- Koji Hase
- The University of Tokyo, Tokyo, Japan
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18
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Itoh Y, Tyssowski K, Gotoh Y. Transcriptional coupling of neuronal fate commitment and the onset of migration. Curr Opin Neurobiol 2013; 23:957-64. [PMID: 23973158 DOI: 10.1016/j.conb.2013.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 08/05/2013] [Accepted: 08/05/2013] [Indexed: 12/18/2022]
Abstract
During mammalian CNS development, when the neural precursor cells commit to the neuronal fate they must delaminate and migrate toward the pial surface in order to reach the appropriate final location. Thus, the coordination of delamination and fate commitment is important in creating the correct structure. Although previous studies have proposed that spindle orientation during mitosis plays a role in both delamination and fate commitment, thus coordinating these events, subsequent studies have challenged this model. Recent work has identified several transcriptional mechanisms associated with neurogenesis that inhibit cell adhesion of newborn neurons and intermediate neuronal progenitors, thereby triggering delamination and linking it with fate commitment.
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Affiliation(s)
- Yasuhiro Itoh
- Institute of Molecular and Cellular Biosciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
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19
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Radice GL. N-cadherin-mediated adhesion and signaling from development to disease: lessons from mice. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2013; 116:263-89. [PMID: 23481199 PMCID: PMC6047516 DOI: 10.1016/b978-0-12-394311-8.00012-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Of the 20 classical cadherin subtypes identified in mammals, the functions of the two initially identified family members E- (epithelial) and N- (neural) cadherin have been most extensively studied. E- and N-Cadherin have mostly mutually exclusive expression patterns, with E-cadherin expressed primarily in epithelial cells, whereas N-cadherin is found in a variety of cells, including neural, muscle, and mesenchymal cells. N-Cadherin function, in particular, appears to be cell context-dependent, as it can mediate strong cell-cell adhesion in the heart but induces changes in cell behavior in favor of a migratory phenotype in the context of epithelial-mesenchymal transition (EMT). The ability of tumor cells to alter their cadherin expression profile, for example, E- to N-cadherin, is critical for malignant progression. Recent advances in mouse molecular genetics, and specifically tissue-specific knockout and knockin alleles of N-cadherin, have provided some unexpected results. This chapter highlights some of the genetic studies that explored the complex role of N-cadherin in embryonic development and disease.
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Affiliation(s)
- Glenn L Radice
- Department of Medicine, Center for Translational Medicine, Jefferson Medical College, Philadelphia, Pennsylvania, USA
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20
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Hoffmeyer K, Raggioli A, Rudloff S, Anton R, Hierholzer A, Del Valle I, Hein K, Vogt R, Kemler R. Wnt/β-catenin signaling regulates telomerase in stem cells and cancer cells. Science 2012; 336:1549-54. [PMID: 22723415 DOI: 10.1126/science.1218370] [Citation(s) in RCA: 392] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Telomerase activity controls telomere length and plays a pivotal role in stem cells, aging, and cancer. Here, we report a molecular link between Wnt/β-catenin signaling and the expression of the telomerase subunit Tert. β-Catenin-deficient mouse embryonic stem (ES) cells have short telomeres; conversely, ES cell expressing an activated form of β-catenin (β-cat(ΔEx3/+)) have long telomeres. We show that β-catenin regulates Tert expression through the interaction with Klf4, a core component of the pluripotency transcriptional network. β-Catenin binds to the Tert promoter in a mouse intestinal tumor model and in human carcinoma cells. We uncover a previously unknown link between the stem cell and oncogenic potential whereby β-catenin regulates Tert expression, and thereby telomere length, which could be critical in human regenerative therapy and cancer.
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Affiliation(s)
- Katrin Hoffmeyer
- Department of Molecular Embryology, Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
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21
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Dady A, Blavet C, Duband JL. Timing and kinetics of E- to N-cadherin switch during neurulation in the avian embryo. Dev Dyn 2012; 241:1333-49. [PMID: 22684994 DOI: 10.1002/dvdy.23813] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2012] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND During embryonic development, cadherin switches are correlated with tissue remodelings, such as epithelium-to-mesenchyme transition (EMT). An E- to N-cadherin switch also occurs during neurogenesis, but this is not accompanied with EMT. The biological significance of this switch is currently unknown. RESULTS We analyzed the timing and kinetics of the E- to N-cadherin switch during early neural induction and neurulation in the chick embryo, in relation to the patterns of their transcriptional regulators. We found that deployment of the E- to N-cadherin switch program varies considerably along the embryonic axis. Rostrally in regions of primary neurulation, it occurs progressively both in time and space in a manner that appears neither in connection with morphological transformation of neural epithelial cells nor in synchrony with movements of neurulation. Caudally, in regions of secondary neurulation, neurogenesis was not associated with cadherin switch as N-cadherin pre-existed before formation of the neural tube. We also found that, during neural development, cadherin switch is orchestrated by a set of transcriptional regulators distinct from those involved in EMT. CONCLUSIONS Our results indicate that cadherin switch correlates with the partition of the neurectoderm into its three main populations: ectoderm, neural crest, and neural tube.
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Affiliation(s)
- Alwyn Dady
- Université Pierre et Marie Curie-Paris 6, Laboratoire de Biologie du Développement, Paris, France
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22
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Bedzhov I, Liszewska E, Kanzler B, Stemmler MP. Igf1r signaling is indispensable for preimplantation development and is activated via a novel function of E-cadherin. PLoS Genet 2012; 8:e1002609. [PMID: 22479204 PMCID: PMC3315466 DOI: 10.1371/journal.pgen.1002609] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 02/05/2012] [Indexed: 01/26/2023] Open
Abstract
Insulin-like growth factor I receptor (Igf1r) signaling controls proliferation, differentiation, growth, and cell survival in many tissues; and its deregulated activity is involved in tumorigenesis. Although important during fetal growth and postnatal life, a function for the Igf pathway during preimplantation development has not been described. We show that abrogating Igf1r signaling with specific inhibitors blocks trophectoderm formation and compromises embryo survival during murine blastocyst formation. In normal embryos total Igf1r is present throughout the membrane, whereas the activated form is found exclusively at cell contact sites, colocalizing with E-cadherin. Using genetic domain switching, we show a requirement for E-cadherin to maintain proper activation of Igf1r. Embryos expressing exclusively a cadherin chimera with N-cadherin extracellular and E-cadherin intracellular domains (NcEc) fail to form a trophectoderm and cells die by apoptosis. In contrast, homozygous mutant embryos expressing a reverse-structured chimera (EcNc) show trophectoderm survival and blastocoel cavitation, indicating a crucial and non-substitutable role of the E-cadherin ectodomain for these processes. Strikingly, blastocyst formation can be rescued in homozygous NcEc embryos by restoring Igf1r signaling, which enhances cell survival. Hence, perturbation of E-cadherin extracellular integrity, independent of its cell-adhesion function, blocked Igf1r signaling and induced cell death in the trophectoderm. Our results reveal an important and yet undiscovered function of Igf1r during preimplantation development mediated by a unique physical interaction between Igf1r and E-cadherin indispensable for proper receptor activation and anti-apoptotic signaling. We provide novel insights into how ligand-dependent Igf1r activity is additionally gated to sense developmental potential in utero and into a bifunctional role of adhesion molecules in contact formation and signaling. One of the most important steps during mammalian development is the formation of a blastocyst before implantation. Proper blastocyst development is fundamentally reliant on the function of the E-cadherin adhesion molecule, which cannot be replaced by another highly related member of the cadherin family. We have addressed the question of how E-cadherin unfolds its unique function during this central embryonic process. We generated mouse mutants that allow specific domain swapping of extra- and intracellular protein domains of E-cadherin with the corresponding portion of N-cadherin. Upon E-cadherin (Cdh1) depletion, apoptosis is induced in cells that are required to form the trophectoderm, the outer cells of a functional blastocyst. Uncoupling of the two E-cadherin domains demonstrated that specifically the presence of the extracellular domain is indispensable in providing essential survival cues. To establish a proper trophectoderm the insulin-like growth factor I receptor (Igf1r) is intimately connected to the E-cadherin–mediated suppression of apoptosis. By interaction of the two proteins Igf1r is efficiently activated to allow embryo survival, blastocyst formation, and implantation. This novel and adhesion-independent function of E-cadherin may serve as paradigm for bifunctionality of adhesion molecules and how they are particularly utilized to interpret signal transduction activities in specific cellular contexts.
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Affiliation(s)
| | | | | | - Marc P. Stemmler
- Department of Molecular Embryology, Max-Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- * E-mail:
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23
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Batlle E, Wilkinson DG. Molecular mechanisms of cell segregation and boundary formation in development and tumorigenesis. Cold Spring Harb Perspect Biol 2012; 4:a008227. [PMID: 22214769 PMCID: PMC3249626 DOI: 10.1101/cshperspect.a008227] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The establishment and maintenance of precisely organized tissues requires the formation of sharp borders between distinct cell populations. The maintenance of segregated cell populations is also required for tissue homeostasis in the adult, and deficiencies in segregation underlie the metastatic spreading of tumor cells. Three classes of mechanisms that underlie cell segregation and border formation have been uncovered. The first involves differences in cadherin-mediated cell-cell adhesion that establishes interfacial tension at the border between distinct cell populations. A second mechanism involves the induction of actomyosin-mediated contraction by intercellular signaling, such that cortical tension is generated at the border. Third, activation of Eph receptors and ephrins can lead to both decreased adhesion by triggering cleavage of E-cadherin, and to repulsion of cells by regulation of the actin cytoskeleton, thus preventing intermingling between cell populations. These mechanisms play crucial roles at distinct boundaries during development, and alterations in cadherin or Eph/ephrin expression have been implicated in tumor metastasis.
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Affiliation(s)
- Eduard Batlle
- Oncology Program and ICREA, Institute for Research in Biomedicine, Josep Samitier 1-5, 08028 Barcelona, Spain
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24
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Boggetti B, Niessen CM. Adherens junctions in mammalian development, homeostasis and disease: lessons from mice. Subcell Biochem 2012; 60:321-55. [PMID: 22674078 DOI: 10.1007/978-94-007-4186-7_14] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Mice have proven to be a particularly powerful model to study molecular mechanisms of development and disease. The reason for this is the close evolutionary relationship between rodents and humans, similarities in physiological mechanisms in mice and human, and the large number of techniques available to study gene functions in mice. A large number of mice mutations, either germ line, conditional or inducible, have been generated in the past years for adherens junctions components, and the number is still increasing. In this review we will discuss mice models that have contributed to understanding the developmental and physiological role of adherens junctions and their components in mammals and have revealed novel mechanistic aspects of how adherens junctions regulate morphogenesis and tissue homeostasis.
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Affiliation(s)
- Barbara Boggetti
- Department of Dermatology, Center for Molecular Medicine, University of Cologne, Room 4A.05, Robert Kochstrasse 21, 50931, Cologne, Germany
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25
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Abstract
Cadherins and catenins are the central cell-cell adhesion molecules in adherens junctions (AJs). This chapter reviews the knowledge concerning the role of cadherins and catenins in epithelial cancer and examines the published literature demonstrating the changes in the expression and function of these proteins in human cancer and the association of these changes with patient outcomes. The chapter also covers the mechanistic studies aiming at uncovering the significance of changes in cadherin and catenin expression in cancer and potential molecular mechanisms responsible for the causal role of AJs in cancer initiation and progression.
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Affiliation(s)
- Valeri Vasioukhin
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA,
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26
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Straub BK, Rickelt S, Zimbelmann R, Grund C, Kuhn C, Iken M, Ott M, Schirmacher P, Franke WW. E-N-cadherin heterodimers define novel adherens junctions connecting endoderm-derived cells. ACTA ACUST UNITED AC 2011; 195:873-87. [PMID: 22105347 PMCID: PMC3257573 DOI: 10.1083/jcb.201106023] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Intercellular junctions play a pivotal role in tissue development and function and also in tumorigenesis. In epithelial cells, decrease or loss of E-cadherin, the hallmark molecule of adherens junctions (AJs), and increase of N-cadherin are widely thought to promote carcinoma progression and metastasis. In this paper, we show that this "cadherin switch" hypothesis does not hold for diverse endoderm-derived cells and cells of tumors derived from them. We show that the cadherins in a major portion of AJs in these cells can be chemically cross-linked in E-N heterodimers. We also show that cells possessing E-N heterodimer AJs can form semistable hemihomotypic AJs with purely N-cadherin-based AJs of mesenchymally derived cells, including stroma cells. We conclude that these heterodimers are the major AJ constituents of several endoderm-derived tissues and tumors and that the prevailing concept of antagonistic roles of these two cadherins in developmental and tumor biology has to be reconsidered.
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Affiliation(s)
- Beate K Straub
- Helmholtz Group for Cell Biology, German Cancer Research Center, 69120 Heidelberg, Germany
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27
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Kotb AM, Hierholzer A, Kemler R. Replacement of E-cadherin by N-cadherin in the mammary gland leads to fibrocystic changes and tumor formation. Breast Cancer Res 2011; 13:R104. [PMID: 22030022 PMCID: PMC3262217 DOI: 10.1186/bcr3046] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 09/21/2011] [Accepted: 10/26/2011] [Indexed: 12/15/2022] Open
Abstract
Introduction E-cadherin (E-cad; cadherin 1) and N-cadherin (N-cad; cadherin 2) are the most prominent members of the cadherin family of cell adhesion molecules. Although they share many structural and functional features, they are expressed in an almost mutually exclusive manner in vivo. Methods To explore functional differences between the two cadherins in vivo, we recently generated a knock-in line in which N-cad is expressed from the E-cad locus. In combination with a conditional gene inactivation approach, we expressed N-cad in the absence of E-cad (referred to as Ncadk.i.) in alveolar epithelial cells of the mammary gland starting in late pregnancy. Results We found that the sole presence of N-cad induces constitutively active fibroblast growth factor (Fgf) signaling and a precocious involution resulting in massive apoptosis of alveolar cells. To block apoptosis, we conditionally deleted one allele of p53 in Ncadk.i. mice and observed a temporal rescue of alveolar morphology and function. However, an accumulation of fibrotic tissue and cysts with increasing age and lactation cycles was observed. This phenotype closely resembled fibrocystic mastopathy (FM), a common disorder in humans, which is thought to precede breast cancer. Concordantly, 55% of Ncadk.i. mice harboring a heterozygous p53 deletion developed malignant and invasive tumors. Conclusions Our results demonstrate a possible role for N-cad in the formation of fibrosis and cysts in the mammary gland. Moreover, we show that these lesions precede the development of malignant tumors. Thus, we provide a new mouse model to investigate the molecular mechanisms of fibrocystic mastopathy and the transition from benign to malignant tumors.
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Affiliation(s)
- Ahmed M Kotb
- Department of Molecular Embryology, Max Planck Institute of Immunobiology and Epigenetics, Stuebeweg 51, D-79108 Freiburg, Germany
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28
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Ansieau S, Courtois-Cox S, Morel AP, Puisieux A. Failsafe program escape and EMT: a deleterious partnership. Semin Cancer Biol 2011; 21:392-6. [PMID: 21986518 DOI: 10.1016/j.semcancer.2011.09.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 09/22/2011] [Accepted: 09/30/2011] [Indexed: 12/16/2022]
Abstract
The epithelial to mesenchymal transition (EMT) is a latent embryonic process which can be aberrantly reactivated during tumor progression. It is generally viewed as one of the main forces driving metastatic dissemination, by providing cells with invasive and motility capabilities. The aberrant reactivation of embryonic EMT inducers has now been additionally linked to escape from senescence and apoptosis, which suggests a role in tumor initiation. This oncogenic potential relies on the ability of EMT inducers to neutralize both the RB and p53 oncosuppressive pathways. RB and p53 have recently been described as key factors in the maintenance of epithelial morphology, which suggests an unexpected and intimate crosstalk between EMT and the corresponding safety programs. In this review, we attempt to understand how these two cell processes are interlinked and might facilitate cell transformation and tumor initiation.
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Affiliation(s)
- Stéphane Ansieau
- Inserm UMR-S1052, Centre de Recherche en Cancérologie, Lyon F-69008, France.
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29
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Moreno-Bueno G, Salvador F, Martín A, Floristán A, Cuevas EP, Santos V, Montes A, Morales S, Castilla MA, Rojo-Sebastián A, Martínez A, Hardisson D, Csiszar K, Portillo F, Peinado H, Palacios J, Cano A. Lysyl oxidase-like 2 (LOXL2), a new regulator of cell polarity required for metastatic dissemination of basal-like breast carcinomas. EMBO Mol Med 2011; 3:528-44. [PMID: 21732535 PMCID: PMC3377095 DOI: 10.1002/emmm.201100156] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 06/06/2011] [Accepted: 06/07/2011] [Indexed: 02/04/2023] Open
Abstract
Basal-like breast carcinoma is characterized by the expression of basal/myoepithelial markers, undifferentiated phenotype, highly aggressive behaviour and frequent triple negative status (ESR-, PR-, Her2neu-). We have previously shown that epithelial-mesenchymal transition (EMT) occurs in basal-like breast tumours and identified Lysyl-oxidase-like 2 (LOXL2) as an EMT player and poor prognosis marker in squamous cell carcinomas. We now show that LOXL2 mRNA is overexpressed in basal-like human breast carcinomas. Breast carcinoma cell lines with basal-like phenotype show a specific cytoplasmic/perinuclear LOXL2 expression, and this subcellular distribution is significantly associated with distant metastatic incidence in basal-like breast carcinomas. LOXL2 silencing in basal-like carcinoma cells induces a mesenchymal-epithelial transition (MET) associated with a decrease of tumourigenicity and suppression of metastatic potential. Mechanistic studies indicate that LOXL2 maintains the mesenchymal phenotype of basal-like carcinoma cells by a novel mechanism involving transcriptional downregulation of Lgl2 and claudin1 and disorganization of cell polarity and tight junction complexes. Therefore, intracellular LOXL2 is a new candidate marker of basal-like carcinomas and a target to block metastatic dissemination of this aggressive breast tumour subtype.
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Affiliation(s)
- Gema Moreno-Bueno
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
- MD Anderson Cancer Center MadridSpain
| | - Fernando Salvador
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Alberto Martín
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Alfredo Floristán
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Eva P Cuevas
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Vanesa Santos
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Amalia Montes
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Saleta Morales
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Maria Angeles Castilla
- Unidad de Gestión Clínica de Anatomía Patológica and Grupo de Patología Molecular del Cáncer, Hospital Virgen del Rocío-IBIS, Instituto Biosanitario de SevillaSevilla, Spain
| | | | - Alejandra Martínez
- Departamento de Anatomía Patológica. Hospital La Paz-IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - David Hardisson
- Departamento de Anatomía Patológica. Hospital La Paz-IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Katalin Csiszar
- John A Burns School of Medicine, University of HawaiiHonolulu, HI, USA
| | - Francisco Portillo
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - Héctor Peinado
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
| | - José Palacios
- Unidad de Gestión Clínica de Anatomía Patológica and Grupo de Patología Molecular del Cáncer, Hospital Virgen del Rocío-IBIS, Instituto Biosanitario de SevillaSevilla, Spain
| | - Amparo Cano
- Departamento de Bioquímica, UAM, Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM, IdiPAZ, Instituto de Investigación Sanitaria La PazMadrid, Spain
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Solanas G, Batlle E. Control of cell adhesion and compartmentalization in the intestinal epithelium. Exp Cell Res 2011; 317:2695-701. [PMID: 21820431 DOI: 10.1016/j.yexcr.2011.07.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Revised: 07/20/2011] [Accepted: 07/21/2011] [Indexed: 01/18/2023]
Abstract
Continuous cell renewal in the intestinal mucosa occurs without disrupting the integrity of the epithelial layer. Despite the restrictions imposed by strong cell-to-cell adhesions, epithelial intestinal cells migrate constantly between tissue compartments. Alterations in cell adhesion and compartmentalization play key roles in diseases of the intestine. In particular, decreased E-cadherin-mediated adhesion during inflammatory bowel disease and loss of EphB/ephrin-B-mediated compartmentalization in colorectal cancer have recently emerged as key players of these prevalent pathologies. Here we will review our current knowledge on how cell-to-cell adhesion, migration and cell positioning are coordinated in the intestinal epithelium. We will highlight what the in vivo genetic analysis of intestinal epithelium has taught us about the complex regulation of cell adhesion and migration in homeostasis and disease.
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Affiliation(s)
- Guiomar Solanas
- Oncology Program, Institute for Research in Biomedicine, Baldiri Reixac 10, 08028 Barcelona, Spain
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Loss of function of e-cadherin in embryonic stem cells and the relevance to models of tumorigenesis. JOURNAL OF ONCOLOGY 2010; 2011:352616. [PMID: 21197469 PMCID: PMC3005858 DOI: 10.1155/2011/352616] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Revised: 10/15/2010] [Accepted: 10/26/2010] [Indexed: 11/18/2022]
Abstract
E-cadherin is the primary cell adhesion molecule within the epithelium, and loss of this protein is associated with a more aggressive tumour phenotype and poorer patient prognosis in many cancers. Loss of E-cadherin is a defining characteristic of epithelial-mesenchymal transition (EMT), a process associated with tumour cell metastasis. We have previously demonstrated an EMT event during embryonic stem (ES) cell differentiation, and that loss of E-cadherin in these cells results in altered growth factor response and changes in cell surface localisation of promigratory molecules. We discuss the implication of loss of E-cadherin in ES cells within the context of cancer stem cells and current models of tumorigenesis. We propose that aberrant E-cadherin expression is a critical contributing factor to neoplasia and the early stages of tumorigenesis in the absence of EMT by altering growth factor response of the cells, resulting in increased proliferation, decreased apoptosis, and acquisition of a stem cell-like phenotype.
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Libusova L, Stemmler MP, Hierholzer A, Schwarz H, Kemler R. N-cadherin can structurally substitute for E-cadherin during intestinal development but leads to polyp formation. J Cell Sci 2010. [DOI: 10.1242/jcs.076802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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