1
|
Zhang J, Ji F, Tan Y, Zhao L, Zhao Y, Liu J, Shao L, Shi J, Ye M, He X, Jin J, Zhao B, Huang J, Roessler S, Zheng X, Ji J. Oncogenic Roles of Laminin Subunit Gamma-2 in Intrahepatic Cholangiocarcinoma via Promoting EGFR Translation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309010. [PMID: 38526177 DOI: 10.1002/advs.202309010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/23/2024] [Indexed: 03/26/2024]
Abstract
Intrahepatic cholangiocarcinoma (iCCA) is a highly lethal biliary epithelial cancer in the liver. Here, Laminin subunit gamma-2 (LAMC2) with important oncogenic roles in iCCA is discovered. In a total of 231 cholangiocarcinoma patients (82% of iCCA patients) across four independent cohorts, LAMC2 is significantly more abundant in iCCA tumor tissue compared to normal bile duct and non-tumor liver. Among 26.3% of iCCA patients, LAMC2 gene is amplified, contributing to its over-expression. Functionally, silencing LAMC2 significantly blocks tumor formation in orthotopic iCCA mouse models. Mechanistically, it promotes EGFR protein translation via interacting with nascent unglycosylated EGFR in the endoplasmic reticulum (ER), resulting in activated EGFR signaling. LAMC2-mediated EGFR translation also depends on its interaction with the ER chaperone BiP via their C-terminus. Together LAMC2 and BiP generate a binding "pocket" of nascent EGFR and facilitate EGFR translation. Consistently, LAMC2-high iCCA patients have poor prognosis in two iCCA cohorts. LAMC2-high iCCA cells are highly sensitive to EGFR tyrosine kinase inhibitors (TKIs) treatment both in vitro and in vivo. Together, these data demonstrate LAMC2 as an oncogenic player in iCCA by promoting EGFR translation and an indicator to identify iCCA patients who may benefit from available EGFR-targeted TKIs therapies.
Collapse
Affiliation(s)
- Jianjuan Zhang
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Fubo Ji
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yaqi Tan
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Lei Zhao
- Shandong Cancer Hospital and Institute, Shandong Cancer Hospital of Shandong First Medical University, Jinan, Shandong Province, 250117, China
| | - Yongzhi Zhao
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Jiaxin Liu
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Liyuan Shao
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
| | - Jiong Shi
- Department of Pathology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, 210008, China
| | - Meihua Ye
- Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Xianglei He
- Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Jianping Jin
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Bin Zhao
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Jun Huang
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Stephanie Roessler
- Institute of Pathology, University Hospital Heidelberg, 69120, Heidelberg, Germany
| | - Xin Zheng
- Taoharmony Biotech L.L.C., Hangzhou, Zhejiang, 310018, China
| | - Junfang Ji
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Center for Life Sciences, Shaoxing Institute, Zhejiang University, Shaoxing, Zhejiang, 321000, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| |
Collapse
|
2
|
Iriyama S, Yasuda M, Nishikawa S, Takai E, Hosoi J, Amano S. Decrease of laminin-511 in the basement membrane due to photoaging reduces epidermal stem/progenitor cells. Sci Rep 2020; 10:12592. [PMID: 32724130 PMCID: PMC7387558 DOI: 10.1038/s41598-020-69558-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 07/14/2020] [Indexed: 02/08/2023] Open
Abstract
Daily sunlight exposure damages the epidermal basement membrane (BM) and disrupts epidermal homeostasis. Inter-follicular epidermal stem cells (IFE-SCs) regulate epidermal proliferation and differentiation, which supports epidermal homeostasis. Here, we examine how photoaging affects the function of IFE-SCs and we identify key components in their cellular environment (niche). We found that sun-exposed skin showed a decrease of MCSP-positive and β1-integrin-positive cells concomitantly with a decrease of laminin-511 at the dermal-epidermal junction (DEJ), as compared with sun-protected skin. Higher levels of laminin-511 were associated with not only increased efficiency of colony formation, but also higher expression levels of MCSP as well as other stem cell markers such as Lrig1, ITGB1, CD44, CD46, DLL1, and K15 in keratinocytes from skin of 12- to 62-year-old subjects. UVB exposure to cultured human skin impaired laminin-511 integrity at the dermal-epidermal junction and reduced MCSP-positive basal epidermal cells as well as K15-positive cells. Combined treatment with matrix metalloproteinase and heparanase inhibitors protected the integrity of laminin-511 and inhibited the reduction of MCSP-positive cells and K15-positive cells. These results suggest that photoaging may reduce the levels of MCSP-positive and K15-positive epidermal stem/progenitor cells in the epidermis via loss of laminin-511 at the dermal-epidermal junction.
Collapse
Affiliation(s)
- Shunsuke Iriyama
- Shiseido Global Innovation Center, 1-2-11 Takashima, Nishi-ku, Yokohama, 220-0011, Japan.
| | - Masahito Yasuda
- Department of Dermatology, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi, Gunma, 371-8511, Japan
| | - Saori Nishikawa
- Shiseido Global Innovation Center, 1-2-11 Takashima, Nishi-ku, Yokohama, 220-0011, Japan
| | - Eisuke Takai
- Shiseido Global Innovation Center, 1-2-11 Takashima, Nishi-ku, Yokohama, 220-0011, Japan
| | - Junichi Hosoi
- Shiseido Global Innovation Center, 1-2-11 Takashima, Nishi-ku, Yokohama, 220-0011, Japan
| | - Satoshi Amano
- Shiseido Global Innovation Center, 1-2-11 Takashima, Nishi-ku, Yokohama, 220-0011, Japan
| |
Collapse
|
3
|
Has C, Nyström A, Saeidian AH, Bruckner-Tuderman L, Uitto J. Epidermolysis bullosa: Molecular pathology of connective tissue components in the cutaneous basement membrane zone. Matrix Biol 2018; 71-72:313-329. [PMID: 29627521 DOI: 10.1016/j.matbio.2018.04.001] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 01/13/2023]
Abstract
Epidermolysis bullosa (EB), a group of heritable skin fragility disorders, is characterized by blistering, erosions and chronic ulcers in the skin and mucous membranes. In some forms, the blistering phenotype is associated with extensive mutilating scarring and development of aggressive squamous cell carcinomas. The skin findings can be associated with extracutaneous manifestations in the ocular as well as gastrointestinal and vesico-urinary tracts. The phenotypic heterogeneity reflects the presence of mutations in as many as 20 different genes expressed in the cutaneous basement membrane zone, and the types and combinations of the mutations and their consequences at the mRNA and protein levels contribute to the spectrum of severity encountered in different subtypes of EB. This overview highlights the molecular genetics of EB based on mutations in the genes encoding type VII and XVII collagens as well as laminin-332. The mutations identified in these protein components of the extracellular matrix attest to their critical importance in providing stability to the cutaneous basement membrane zone, with implications for heritable and acquired diseases.
Collapse
Affiliation(s)
- Cristina Has
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Alexander Nyström
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Amir Hossein Saeidian
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Leena Bruckner-Tuderman
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
| |
Collapse
|
4
|
Ivanovska J, Zehnder T, Lennert P, Sarker B, Boccaccini AR, Hartmann A, Schneider-Stock R, Detsch R. Biofabrication of 3D Alginate-Based Hydrogel for Cancer Research: Comparison of Cell Spreading, Viability, and Adhesion Characteristics of Colorectal HCT116 Tumor Cells. Tissue Eng Part C Methods 2017; 22:708-15. [PMID: 27269631 DOI: 10.1089/ten.tec.2015.0452] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hydrogels are an important class of biomaterials as they could mimic the extracellular matrix (ECM). Among the naturally occurring biopolymers, alginate and gelatin are extensively used for many biomedical applications. For developing biofabrication constructs as three-dimensional (3D) cell culture models, realistic imaging of cell spreading and proliferation inside the hydrogels represents a major challenge. Therefore, we aimed to establish a system that can mimic the structural architecture, composition, and biological functions of the ECM for cancer research approaches. For this, we compared the cell behavior of human colon cancer HCT116 cells in two biofabricated hydrogels as follows: pure alginate and cross-linked alginate-gelatin (ADA-GEL) matrixes. Our data indicate that cells from the ADA-GEL matrix showed highest proliferation and cellular networks through the material. Analyzing the mRNA expression of several integrins of cells cultured inside of the matrix, we showed that mRNA expression of integrin subunits differed based on the cell focal adhesion characteristics. Furthermore, we showed that recultured ADA-GEL immobilized cells do not differ from parental HCT116 cells regarding migration and proliferation capabilities. Comparing adhesion and other phenotypic characteristics of HCT116 tumor cells, we suggest that ADA-GEL hydrogel is a more suitable 3D system than pure alginate and seems to optimally mimic the physiological behavior of the tumor microenvironment. For the first time, we present a functional 3D hydrogel construct for colon cancer cells, which are supporting their physiological cell attachment, spreading, and viability. We strongly believe that it will be applicable as a suitable in vitro 3D tumor model to study different aspects of tumor cell behavior.
Collapse
Affiliation(s)
- Jelena Ivanovska
- 1 Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Tobias Zehnder
- 2 Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Pablo Lennert
- 1 Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Bapi Sarker
- 2 Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Aldo R Boccaccini
- 2 Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Arndt Hartmann
- 1 Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Regine Schneider-Stock
- 1 Experimental Tumor Pathology, Institute of Pathology, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| | - Rainer Detsch
- 2 Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander University of Erlangen-Nuremberg , Germany
| |
Collapse
|
5
|
Insights into the Mechanisms Involved in Strong Hemorrhage and Dermonecrosis Induced by Atroxlysin-Ia, a PI-Class Snake Venom Metalloproteinase. Toxins (Basel) 2017; 9:toxins9080239. [PMID: 28767072 PMCID: PMC5577573 DOI: 10.3390/toxins9080239] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 11/17/2022] Open
Abstract
Hemorrhage is the most prominent effect of snake venom metalloproteinases (SVMPs) in human envenomation. The capillary injury is a multifactorial effect caused by hydrolysis of the components of the basement membrane (BM). The PI and PIII classes of SVMPs are abundant in viperid venoms and hydrolyze BM components. However, hemorrhage is associated mostly with PIII-class SVMPs that contain non-catalytic domains responsible for the binding of SVMPs to BM proteins, facilitating enzyme accumulation in the tissue and enhancing its catalytic efficiency. Here we report on Atroxlysin-Ia, a PI-class SVMP that induces hemorrhagic lesions in levels comparable to those induced by Batroxrhagin (PIII-class), and a unique SVMP effect characterized by the rapid onset of dermonecrotic lesions. Atroxlysin-Ia was purified from B. atrox venom, and sequence analyses indicated that it is devoid of non-catalytic domains and unable to bind to BM proteins as collagen IV and laminin in vitro or in vivo. The presence of Atroxlysin-Ia was diffuse in mice skin, and localized mainly in the epidermis with no co-localization with BM components. Nevertheless, the skin lesions induced by Atroxlysin-Ia were comparable to those induced by Batroxrhagin, with induction of leukocyte infiltrates and hemorrhagic areas soon after toxin injection. Detachment of the epidermis was more intense in skin injected with Atroxlysin-Ia. Comparing the catalytic activity of both toxins, Batroxrhagin was more active in the hydrolysis of a peptide substrate while Atroxlysin-Ia hydrolyzed more efficiently fibrin, laminin, collagen IV and nidogen. Thus, the results suggest that Atroxlysin-Ia bypasses the binding step to BM proteins, essential for hemorrhagic lesions induced by PII- and P-III class SVMPs, causing a significantly fast onset of hemorrhage and dermonecrosis, due to its higher proteolytic capacity on BM components.
Collapse
|
6
|
Yao Y. Laminin: loss-of-function studies. Cell Mol Life Sci 2017; 74:1095-1115. [PMID: 27696112 PMCID: PMC11107706 DOI: 10.1007/s00018-016-2381-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/25/2016] [Accepted: 09/26/2016] [Indexed: 01/13/2023]
Abstract
Laminin, one of the most widely expressed extracellular matrix proteins, exerts many important functions in multiple organs/systems and at various developmental stages. Although its critical roles in embryonic development have been demonstrated, laminin's functions at later stages remain largely unknown, mainly due to its intrinsic complexity and lack of research tools (most laminin mutants are embryonic lethal). With the advance of genetic and molecular techniques, many new laminin mutants have been generated recently. These new mutants usually have a longer lifespan and show previously unidentified phenotypes. Not only do these studies suggest novel functions of laminin, but also they provide invaluable animal models that allow investigation of laminin's functions at late stages. Here, I first briefly introduce the nomenclature, structure, and biochemistry of laminin in general. Next, all the loss-of-function mutants/models for each laminin chain are discussed and their phenotypes compared. I hope to provide a comprehensive review on laminin functions and its loss-of-function models, which could serve as a reference for future research in this understudied field.
Collapse
Affiliation(s)
- Yao Yao
- College of Pharmacy, University of Minnesota, Duluth, MN, 55812, USA.
| |
Collapse
|
7
|
Wazen RM, Viegas-Costa LC, Fouillen A, Moffatt P, Adair-Kirk TL, Senior RM, Nanci A. Laminin γ2 knockout mice rescued with the human protein exhibit enamel maturation defects. Matrix Biol 2016; 52-54:207-218. [PMID: 26956061 DOI: 10.1016/j.matbio.2016.03.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/03/2016] [Accepted: 03/03/2016] [Indexed: 01/13/2023]
Abstract
The epithelial ameloblasts are separated from the maturing enamel by an atypical basement membrane (BM) that is enriched in laminin 332 (LM-332). This heterotrimeric protein (α3, ß3 and γ2 chains) provides structural integrity to BMs and influences various epithelial cell processes including cell adhesion and differentiation. Mouse models that lack expression of individual LM-332 chains die shortly after birth. The lethal phenotype of laminin γ2 knockout mice can be rescued by human laminin γ2 (LAMC2) expressed using a doxycycline-inducible (Tet-on) cytokeratin 14 promoter-rtTA. These otherwise normal-looking rescued mice exhibit white spot lesions on incisors. We therefore investigated the effect of rescue with human LAMC2 on enamel maturation and structuring of the atypical BM. The maturation stage enamel organ in transgenic mice was severely altered as compared to wild type controls, a structured BM was no longer discernible, dystrophic matrix appeared in the maturing enamel layer, and there was residual enamel matrix late into the maturation stage. Microtomographic scans revealed excessive wear of occlusal surfaces on molars, chipping of enamel on incisor tips, and hypomineralization of the enamel layer. No structural alterations were observed at other epithelial sites, such as skin, palate and tongue. These results indicate that while this humanized mouse model is capable of rescue in various epithelial tissues, it is unable to sustain structuring of a proper BM at the interface between ameloblasts and maturing enamel. This failure may be related to the atypical composition of the BM in the maturation stage and reaffirms that the atypical BM is essential for enamel maturation.
Collapse
Affiliation(s)
- Rima M Wazen
- Laboratory for the Study of Calcified Tissues and Biomaterials, Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montréal, Québec, Canada
| | - Luiz C Viegas-Costa
- Laboratory for the Study of Calcified Tissues and Biomaterials, Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montréal, Québec, Canada
| | - Aurélien Fouillen
- Laboratory for the Study of Calcified Tissues and Biomaterials, Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montréal, Québec, Canada; Department of Biochemistry and Molecular Medicine, Université de Montréal, Montréal, Québec, Canada
| | - Pierre Moffatt
- Shriners Hospital for Children, Montréal, Montréal, Québec, Canada
| | - Tracy L Adair-Kirk
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Robert M Senior
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montréal, Québec, Canada; Department of Biochemistry and Molecular Medicine, Université de Montréal, Montréal, Québec, Canada.
| |
Collapse
|
8
|
Wells A, Kopp N, Xu X, O'Brien DR, Yang W, Nehorai A, Adair-Kirk TL, Kopan R, Dougherty JD. The anatomical distribution of genetic associations. Nucleic Acids Res 2015; 43:10804-20. [PMID: 26586807 PMCID: PMC4678833 DOI: 10.1093/nar/gkv1262] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 11/04/2015] [Indexed: 01/13/2023] Open
Abstract
Deeper understanding of the anatomical intermediaries for disease and other complex genetic traits is essential to understanding mechanisms and developing new interventions. Existing ontology tools provide functional, curated annotations for many genes and can be used to develop mechanistic hypotheses; yet information about the spatial expression of genes may be equally useful in interpreting results and forming novel hypotheses for a trait. Therefore, we developed an approach for statistically testing the relationship between gene expression across the body and sets of candidate genes from across the genome. We validated this tool and tested its utility on three applications. First, we show that the expression of genes in associated loci from GWA studies implicates specific tissues for 57 out of 98 traits. Second, we tested the ability of the tool to identify novel relationships between gene expression and phenotypes. Specifically, we experimentally confirmed an underappreciated prediction highlighted by our tool: that white blood cell count--a quantitative trait of the immune system--is genetically modulated by genes expressed in the skin. Finally, using gene lists derived from exome sequencing data, we show that human genes under selective constraint are disproportionately expressed in nervous system tissues.
Collapse
Affiliation(s)
- Alan Wells
- Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Nathan Kopp
- Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Xiaoxiao Xu
- The Preston M. Green Department of Electrical and Systems Engineering, Washington University, St. Louis, MO 63130, USA
| | - David R O'Brien
- Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Wei Yang
- Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Arye Nehorai
- The Preston M. Green Department of Electrical and Systems Engineering, Washington University, St. Louis, MO 63130, USA
| | - Tracy L Adair-Kirk
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Raphael Kopan
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - J D Dougherty
- Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| |
Collapse
|
9
|
Has C, Nyström A. Epidermal Basement Membrane in Health and Disease. CURRENT TOPICS IN MEMBRANES 2015; 76:117-70. [PMID: 26610913 DOI: 10.1016/bs.ctm.2015.05.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Skin, as the organ protecting the individual from environmental aggressions, constantly meets external insults and is dependent on mechanical toughness for its preserved function. Accordingly, the epidermal basement membrane (BM) zone has adapted to enforce tissue integrity. It harbors anchoring structures created through unique organization of common BM components and expression of proteins exclusive to the epidermal BM zone. Evidence for the importance of its correct assembly and the nonredundancy of its components for skin integrity is apparent from the multiple skin blistering disorders caused by mutations in genes coding for proteins associated with the epidermal BM and from autoimmune disorders in which autoantibodies target these molecules. However, it has become clear that these proteins not only provide mechanical support but are also critically involved in tissue homeostasis, repair, and regeneration. In this chapter, we provide an overview of the unique organization and components of the epidermal BM. A special focus will be given to its function during regeneration, and in inherited and acquired diseases.
Collapse
Affiliation(s)
- Cristina Has
- Department of Dermatology, University Medical Center Freiburg, Freiburg, Germany
| | - Alexander Nyström
- Department of Dermatology, University Medical Center Freiburg, Freiburg, Germany
| |
Collapse
|
10
|
Has C, Kiritsi D. Therapies for inherited skin fragility disorders. Exp Dermatol 2015; 24:325-31. [DOI: 10.1111/exd.12666] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Cristina Has
- Department of Dermatology; Medical Center - University of Freiburg; Freiburg Germany
| | - Dimitra Kiritsi
- Department of Dermatology; Medical Center - University of Freiburg; Freiburg Germany
| |
Collapse
|
11
|
Characterisation of secretory calcium-binding phosphoprotein-proline-glutamine-rich 1: a novel basal lamina component expressed at cell-tooth interfaces. Cell Tissue Res 2014; 358:843-55. [PMID: 25193156 DOI: 10.1007/s00441-014-1989-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 08/07/2014] [Indexed: 10/24/2022]
Abstract
Functional genomic screening of the rat enamel organ (EO) has led to the identification of a number of secreted proteins expressed during the maturation stage of amelogenesis, including amelotin (AMTN) and odontogenic ameloblast-associated (ODAM). In this study, we characterise the gene, protein and pattern of expression of a related protein called secretory calcium-binding phosphoprotein-proline-glutamine-rich 1 (SCPPPQ1). The Scpppq1 gene resides within the secretory calcium-binding phosphoprotein (Scpp) cluster. SCPPPQ1 is a highly conserved, 75-residue, secreted protein rich in proline, leucine, glutamine and phenylalanine. In silico data mining has revealed no correlation to any known sequences. Northern blotting of various rat tissues suggests that the expression of Scpppq1 is restricted to tooth and associated tissues. Immunohistochemical analyses show that the protein is expressed during the late maturation stage of amelogenesis and in the junctional epithelium where it localises to an atypical basal lamina at the cell-tooth interface. This discrete localisation suggests that SCPPPQ1, together with AMTN and ODAM, participates in structuring the basal lamina and in mediating attachment of epithelia cells to mineralised tooth surfaces.
Collapse
|
12
|
Chen H, Li S, Meng T, Zhang L, Dai T, Xiang Q, Su Z, Zhang Q, Huang Y. HSP27 as a biomarker for predicting skin irritation in human skin and reconstructed organotypic skin model. Toxicol Lett 2014; 226:124-31. [PMID: 24503015 DOI: 10.1016/j.toxlet.2014.01.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/18/2014] [Accepted: 01/27/2014] [Indexed: 11/19/2022]
Abstract
In vitro alternative tests aiming at replacing the traditional animal test for predicting the irritant potential of chemicals have been developed, but the assessing parameters or endpoints are still not sufficient. To discover novel endpoints for skin irritation responses, 2DE-based proteomics was used to analyze the protein expression in human skin exposed to sodium lauryl sulfate (SLS) following the test protocol of the European Centre for the Validation of Alternative Methods (ECVAM) in the present study. HSP27 was up-regulated most significantly among the eight identified proteins, consistent with our previous reports. Acid and basic chemicals were applied on human skin for further validation and results showed that the up-regulated expression of HSP27 was induced in 24h after the exposure. Skin-equivalent constructed with fibroblasts, basement membrane and keratinocytes was used to investigate the potential of HSP27 as a biomarker or additional endpoint for the hazard assessment of skin irritation. Our skin-equivalent (Reconstructed Organotypic Skin Model, ROSM) had excellent epidermal differentiation and was suitable for the skin irritation test. HSP27 also displayed an up-regulated expression in the ROSM in 24h after the irritants exposure for 15min. All these results suggest that HSP27 may represent a potential marker or additional endpoint for the hazard assessment of skin irritation caused by chemical products.
Collapse
Affiliation(s)
- Hongxia Chen
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Shuhua Li
- Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Tian Meng
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Lei Zhang
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Taoli Dai
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Qi Xiang
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China
| | - Zhijian Su
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China
| | - Qihao Zhang
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China.
| | - Yadong Huang
- Institute of Biomedicine and National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China.
| |
Collapse
|
13
|
Progress in Epidermolysis bullosa research: summary of DEBRA International Research Conference 2012. J Invest Dermatol 2013; 133:2121-6. [PMID: 23949764 DOI: 10.1038/jid.2013.127] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
14
|
Schmidt A, Wende K, Bekeschus S, Bundscherer L, Barton A, Ottmüller K, Weltmann KD, Masur K. Non-thermal plasma treatment is associated with changes in transcriptome of human epithelial skin cells. Free Radic Res 2013; 47:577-92. [DOI: 10.3109/10715762.2013.804623] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|