1
|
Ewald CY, Nyström A. Mechanotransduction through hemidesmosomes during aging and longevity. J Cell Sci 2023; 136:jcs260987. [PMID: 37522320 DOI: 10.1242/jcs.260987] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023] Open
Abstract
Hemidesmosomes are structural protein complexes localized at the interface of tissues with high mechanical demand and shear forces. Beyond tissue anchoring, hemidesmosomes have emerged as force-modulating structures important for translating mechanical cues into biochemical and transcriptional adaptation (i.e. mechanotransduction) across tissues. Here, we discuss the recent insights into the roles of hemidesmosomes in age-related tissue regeneration and aging in C. elegans, mice and humans. We highlight the emerging concept of preserved dynamic mechanoregulation of hemidesmosomes in tissue maintenance and healthy aging.
Collapse
Affiliation(s)
- Collin Y Ewald
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Zürich, Schwerzenbach CH-8603, Switzerland
| | - Alexander Nyström
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, Freiburg DE-79104, Germany
- Freiburg Institute for Advanced Studies (FRIAS), Albertstraße 19, Freiburg im Breisgau DE-79104, Germany
| |
Collapse
|
2
|
Conte JG, Tellechea ML, Park B, Ballerini MG, Jaita G, Peluffo MC. Interaction between epidermal growth factor receptor and C-C motif chemokine receptor 2 in the ovulatory cascade. Front Cell Dev Biol 2023; 11:1161813. [PMID: 37082622 PMCID: PMC10110862 DOI: 10.3389/fcell.2023.1161813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/27/2023] [Indexed: 04/07/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) signaling pathway is one of the main pathways responsible for propagating the luteinizing hormone (LH) signal throughout the cumulus cells and the oocyte. Recently, we have proposed the C-C motif chemokine receptor 2 (CCR2) and its main ligand (monocyte chemoattractant protein-1, MCP1) as novel mediators of the ovulatory cascade. Our previous results demonstrate that the gonadotropins (GNT), amphiregulin (AREG), and prostaglandin E2 (PGE2) stimulation of periovulatory gene mRNA levels occurs, at least in part, through the CCR2/MCP1 pathway, proposing the CCR2 receptor as a novel mediator of the ovulatory cascade in a feline model. For that purpose, feline cumulus-oocyte complexes (COCs) were cultured in the presence or absence of an EGFR inhibitor, recombinant chemokine MCP1, and gonadotropins [as an inducer of cumulus-oocyte expansion (C-OE), and oocyte maturation] to further assess the mRNA expression of periovulatory key genes, C-OE, oocyte nuclear maturation, and steroid hormone production. We observed that MCP1 was able to revert the inhibition of AREG mRNA expression by an EGFR inhibitor within the feline COC. In accordance, the confocal analysis showed that the GNT-stimulated hyaluronic acid (HA) synthesis, blocked by the EGFR inhibitor, was recovered by the addition of recombinant MCP1 in the C-OE culture media. Also, MCP1 was able to revert the inhibition of progesterone (P4) production by EGFR inhibitor in the C-OE culture media. Regarding oocyte nuclear maturation, recombinant MCP1 could also revert the inhibition triggered by the EGFR inhibitor, leading to a recovery in the percentage of metaphase II (MII)-stage oocytes. In conclusion, our results confirm the chemokine receptor CCR2 as a novel intermediate in the ovulatory cascade and demonstrate that the EGFR/AREG and the CCR2/MCP1 signaling pathways play critical roles in regulating feline C-OE and oocyte nuclear maturation, with CCR2/MCP1 signaling pathway being downstream EGFR/AREG pathway within the ovulatory cascade.
Collapse
Affiliation(s)
- J. G. Conte
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), CONICET—FEI—División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina
- Instituto de Investigaciones Biomédicas (INBIOMED), Facultad de Medicina CONICET- Universidad de Buenos Aires, Buenos Aires, Argentina
| | - M. L. Tellechea
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), CONICET—FEI—División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina
| | - B. Park
- Biostatistics Shared Resource, Knight Cancer Institute, Oregon Health and Science University, Portland, OR, United States
| | - M. G. Ballerini
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), CONICET—FEI—División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina
| | - G. Jaita
- Instituto de Investigaciones Biomédicas (INBIOMED), Facultad de Medicina CONICET- Universidad de Buenos Aires, Buenos Aires, Argentina
- Departamento de Biología Celular e Histología, Facultad de Medicina-Universidad de Buenos Aires Buenos, Buenos Aires, Argentina
| | - M. C. Peluffo
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), CONICET—FEI—División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina
- *Correspondence: M. C. Peluffo,
| |
Collapse
|
3
|
Regulation of Kinase Signaling Pathways by α6β4-Integrins and Plectin in Prostate Cancer. Cancers (Basel) 2022; 15:cancers15010149. [PMID: 36612146 PMCID: PMC9818203 DOI: 10.3390/cancers15010149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/19/2022] [Accepted: 12/24/2022] [Indexed: 12/28/2022] Open
Abstract
Hemidesmosomes (HDs) are adhesive structures that ensure stable anchorage of cells to the basement membrane. They are formed by α6β4-integrin heterodimers and linked to intermediate filaments via plectin. It has been reported that one of the most common events during the pathogenesis of prostate cancer (PCa) is the loss of HD organization. While the expression levels of β4-integrins are strongly reduced, the expression levels of α6-integrins and plectin are maintained or even elevated, and seem to promote tumorigenic properties of PCa cells, such as proliferation, invasion, metastasis, apoptosis- and drug-resistance. In this review, we discuss the potential mechanisms of how HD components might contribute to various cellular signaling pathways to promote prostate carcinogenesis. Moreover, we summarize the current knowledge on the involvement of α6β4-integrins and plectin in PCa initiation and progression.
Collapse
|
4
|
Fischer NG, Aparicio C. Junctional epithelium and hemidesmosomes: Tape and rivets for solving the "percutaneous device dilemma" in dental and other permanent implants. Bioact Mater 2022; 18:178-198. [PMID: 35387164 PMCID: PMC8961425 DOI: 10.1016/j.bioactmat.2022.03.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 02/14/2022] [Accepted: 03/12/2022] [Indexed: 02/06/2023] Open
Abstract
The percutaneous device dilemma describes etiological factors, centered around the disrupted epithelial tissue surrounding non-remodelable devices, that contribute to rampant percutaneous device infection. Natural percutaneous organs, in particular their extracellular matrix mediating the "device"/epithelium interface, serve as exquisite examples to inspire longer lasting long-term percutaneous device design. For example, the tooth's imperviousness to infection is mediated by the epithelium directly surrounding it, the junctional epithelium (JE). The hallmark feature of JE is formation of hemidesmosomes, cell/matrix adhesive structures that attach surrounding oral gingiva to the tooth's enamel through a basement membrane. Here, the authors survey the multifaceted functions of the JE, emphasizing the role of the matrix, with a particular focus on hemidesmosomes and their five main components. The authors highlight the known (and unknown) effects dental implant - as a model percutaneous device - placement has on JE regeneration and synthesize this information for application to other percutaneous devices. The authors conclude with a summary of bioengineering strategies aimed at solving the percutaneous device dilemma and invigorating greater collaboration between clinicians, bioengineers, and matrix biologists.
Collapse
Affiliation(s)
- Nicholas G. Fischer
- MDRCBB-Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, 16-212 Moos Tower, 515 Delaware St. SE, Minneapolis, MN, 55455, USA
| | - Conrado Aparicio
- MDRCBB-Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, 16-212 Moos Tower, 515 Delaware St. SE, Minneapolis, MN, 55455, USA
- Division of Basic Research, Faculty of Odontology, UIC Barcelona – Universitat Internacional de Catalunya, C/. Josep Trueta s/n, 08195, Sant Cugat del Valles, Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), C/. Baldiri Reixac 10-12, 08028, Barcelona, Spain
| |
Collapse
|
5
|
Liu H, Liu J, Long C, Chen L, Zhan W, Xiao W, Gong X, Liu M, Tian XL, Chen S. Lack of NPR1 Increases Vascular Endothelial Adhesion through Induction of Integrin Beta 4. Int J Mol Sci 2022; 23:ijms232012627. [PMID: 36293483 PMCID: PMC9604115 DOI: 10.3390/ijms232012627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/12/2022] [Accepted: 10/18/2022] [Indexed: 12/02/2022] Open
Abstract
Natriuretic peptide receptor 1 (NPR1) serves as a modulator of vascular endothelial homeostasis. Interactions between monocytes and endothelial cells may initiate endothelium dysfunction, which is known as an early hallmark of atherosclerosis. In this study, we performed RNA-sequencing analysis for the aorta of Npr1 knockout (Npr1+/−) mice and found that differentially expressed genes were significantly related to cell adhesion. This result was supported by an increased expression of intercellular adhesion molecule 1 (ICAM-1) in the aortic endothelium of Npr1+/− mice. Moreover, we observed that the knockdown of NPR1 increased ICAM-1 expression and promoted THP-1 monocyte adhesion to human umbilical vein endothelial cells (HUVECs). NPR1 overexpression decreased ICAM-1 expression and inhibited the adhesion of monocytes to HUVECs treated by TNF-α (a cell adhesion inducer). Further analysis showed that adhesion-related genes were enriched in the focal adhesion signaling pathway, in which integrin beta 4 (Itgb4) was determined as a key gene. Notably, ITGB4 expression increased in vascular endothelium of Npr1+/− mice and in NPR1-knockdown HUVECs. The deficiency of ITGB4 decreased ICAM-1 expression and attenuated monocyte adhesion to NPR1-knockdown endothelial cells. Additionally, a reduced NPR1 and an increased ITGB4 expression level were found in an atherosclerosis mouse model. In conclusion, our findings demonstrate that NPR1 deficiency increases vascular endothelial cell adhesion by stimulating ITGB4 expression, which may contribute to the development of atherosclerosis.
Collapse
Affiliation(s)
- Hongfei Liu
- Vascular Function Laboratory, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Jiankun Liu
- Aging and Vascular Diseases, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Changkun Long
- Vascular Function Laboratory, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Liping Chen
- Vascular Function Laboratory, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Wenxing Zhan
- Vascular Function Laboratory, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Wanli Xiao
- Metabolic Control and Aging, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Xueting Gong
- Aging and Vascular Diseases, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Man Liu
- Aging and Vascular Diseases, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Xiao-Li Tian
- Aging and Vascular Diseases, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
| | - Shenghan Chen
- Vascular Function Laboratory, Human Aging Research Institute, School of Life Science, Jiangxi Key Laboratory of Human Aging, Nanchang University, Nanchang 330031, China
- Correspondence:
| |
Collapse
|
6
|
Tuusa J, Kokkonen N, Tasanen K. BP180/Collagen XVII: A Molecular View. Int J Mol Sci 2021; 22:12233. [PMID: 34830116 PMCID: PMC8623354 DOI: 10.3390/ijms222212233] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/12/2022] Open
Abstract
BP180 is a type II collagenous transmembrane protein and is best known as the major autoantigen in the blistering skin disease bullous pemphigoid (BP). The BP180 trimer is a central component in type I hemidesmosomes (HD), which cause the adhesion between epidermal keratinocytes and the basal lamina, but BP180 is also expressed in several non-HD locations, where its functions are poorly characterized. The immunological roles of intact and proteolytically processed BP180, relevant in BP, have been subject to intensive research, but novel functions in cell proliferation, differentiation, and aging have also recently been described. To better understand the multiple physiological functions of BP180, the focus should return to the protein itself. Here, we comprehensively review the properties of the BP180 molecule, present new data on the biochemical features of its intracellular domain, and discuss their significance with regard to BP180 folding and protein-protein interactions.
Collapse
Affiliation(s)
| | | | - Kaisa Tasanen
- PEDEGO Research Unit, Department of Dermatology, Medical Research Center Oulu, Oulu University Hospital and University of Oulu, P.O. Box 8000, FI-90014 Oulu, Finland; (J.T.); (N.K.)
| |
Collapse
|
7
|
Kosumi H, Watanabe M, Shinkuma S, Nohara T, Fujimura Y, Tsukiyama T, Donati G, Iwata H, Nakamura H, Ujiie H, Natsuga K. Wnt/β-Catenin Signaling Stabilizes Hemidesmosomes in Keratinocytes. J Invest Dermatol 2021; 142:1576-1586.e2. [PMID: 34742703 DOI: 10.1016/j.jid.2021.10.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/16/2021] [Accepted: 10/24/2021] [Indexed: 12/24/2022]
Abstract
Hemidesmosomes (HDs) are adhesion complexes that promote epithelial-stromal attachment in stratified and complex epithelia, including the epidermis. In various biological processes, such as differentiation and migration of epidermal keratinocytes during wound healing or carcinoma invasion, quick assembly and disassembly of HDs are prerequisites. In this study, we show that inhibition of Wnt/β-catenin signaling disturbs HD organization in keratinocytes. Screening with inhibitors identified the depletion of HD components and HD-like structures through Wnt inhibition, but keratinocyte differentiation was not affected. Wnt inhibition significantly diminished plectin and type XVII collagen expression in the basal side of Wnt-inhibited cells and the dermo-epidermal junction of the Wnt-inactive murine basal epidermis. Similar to Wnt inhibition, PLEC-knockout cells or cells with plectin-type XVII collagen binding defects showed type XVII collagen reduction in the basal side of the cells, implying the possible involvement of Wnt/β-catenin signaling in HD assembly. Atypical protein kinase C inhibition ameliorated the phenotypes of Wnt-inhibited cells. These findings show that Wnt/β-catenin signaling regulates the localization of HD components in keratinocytes and that the atypical protein kinase C pathway is involved in Wnt inhibition‒induced HD disarrangement. Our study suggests that the Wnt signaling pathway could be a potential therapeutic target for treating HD-defective diseases, such as epidermolysis bullosa.
Collapse
Affiliation(s)
- Hideyuki Kosumi
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Mika Watanabe
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan; Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy; Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | - Satoru Shinkuma
- Department of Dermatology, Nara Medical University School of Medicine, Kashihara, Japan
| | - Takuma Nohara
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yu Fujimura
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Tadasuke Tsukiyama
- Department of Biochemistry, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Giacomo Donati
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy; Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | - Hiroaki Iwata
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hideki Nakamura
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hideyuki Ujiie
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Ken Natsuga
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| |
Collapse
|
8
|
Te Molder L, de Pereda JM, Sonnenberg A. Regulation of hemidesmosome dynamics and cell signaling by integrin α6β4. J Cell Sci 2021; 134:272177. [PMID: 34523678 DOI: 10.1242/jcs.259004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Hemidesmosomes (HDs) are specialized multiprotein complexes that connect the keratin cytoskeleton of epithelial cells to the extracellular matrix (ECM). In the skin, these complexes provide stable adhesion of basal keratinocytes to the underlying basement membrane. Integrin α6β4 is a receptor for laminins and plays a vital role in mediating cell adhesion by initiating the assembly of HDs. In addition, α6β4 has been implicated in signal transduction events that regulate diverse cellular processes, including proliferation and survival. In this Review, we detail the role of α6β4 in HD assembly and beyond, and we discuss the molecular mechanisms that regulate its function.
Collapse
Affiliation(s)
- Lisa Te Molder
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Jose M de Pereda
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007 Salamanca, Spain
| | - Arnoud Sonnenberg
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| |
Collapse
|
9
|
Chen H, Luo T, He S, Sa G. Regulatory mechanism of oral mucosal rete peg formation. J Mol Histol 2021; 52:859-868. [PMID: 34463917 DOI: 10.1007/s10735-021-10016-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 08/26/2021] [Indexed: 01/17/2023]
Abstract
Rete pegs are finger-like structures that are formed during the development and wound healing process of the skin and oral mucosa, and they provide better mechanical resistance and nutritional supply between the epithelium and dermis. An increasing number of studies have shown that rete pegs have physiological functions, such as resisting bacterial invasion, body fluid loss, and other harmful changes, which indicate that rete pegs are important structures in natural skin and oral mucosa. Although a great deal of progress has been made in scaffold materials and construction methods for tissue-engineered skin and oral mucosa in recent years, construction of the oral mucosa with functional rete pegs remains a major challenge. In this review, we summarized current research on the progress on formation of rete pegs in human oral mucosa as well as its molecular basis and regulatory mechanism, which might provide new ideas for functional construction of tissue-engineered skin and oral mucosa.
Collapse
Affiliation(s)
- Heng Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Tianhao Luo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Sangang He
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, Hubei, China.
| | - Guoliang Sa
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, Hubei, China.
| |
Collapse
|
10
|
Jaworski JP, Urrutia M, Dascal E, Jaita G, Peluffo MC. C-C motif chemokine receptor 2 as a novel intermediate in the ovulatory cascade. Mol Hum Reprod 2021; 26:289-300. [PMID: 32159806 DOI: 10.1093/molehr/gaaa020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 02/28/2020] [Indexed: 12/12/2022] Open
Abstract
Expression of immune function genes within follicle cells has been reported in ovaries from many species. Recent work from our laboratory showed a direct effect of the monocyte chemoattractant protein 1/C-C motif chemokine receptor 2 system within the feline cumulus oocyte complex, by increasing the mRNA levels of key genes involved in the ovulatory cascade in vitro. Studies were designed to evaluate if C-C motif chemokine receptor 2 acts as a novel mediator of the ovulatory cascade in vitro. Therefore, feline cumulus oocyte complexes were cultured in the presence or absence of a highly selective C-C motif chemokine receptor 2 antagonist together with known inducers of cumulus-oocyte expansion and/or oocyte maturation to assess mRNA expression of key genes related to periovulatory events in other species as well as oocyte maturation. Also, the effects of recombinant monocyte chemoattractant protein 1 on spontaneous or gonadotrophin-induced oocyte maturation were assessed. This is an in vitro system using isolated cumulus oocyte complexes from feline ovaries. The present study reveals the modulation of several key ovulatory genes by a highly selective C-C motif chemokine receptor 2 antagonist. However, this antagonist was not enough to block the oocyte maturation induced by gonadotropins or amphiregulin. Nonetheless, recombinant monocyte chemoattractant protein 1 had a significant effect on spontaneous oocyte maturation, increasing the percentage of metaphase II stage oocytes in comparison to the control. This is the first study in any species to establish C-C motif chemokine receptor 2 as a mediator of some actions of the mid-cycle gonadotrophin surge.
Collapse
Affiliation(s)
- J P Jaworski
- Instituto de Virología, INTA (National Institute of Agricultural Technology-Instituto Nacional de Tecnología Agropecuaria)-CONICET, Argentina. Las Cabañas y Los Reseros s/n, Las Cabañas y Los Reseros 10 s/n, Castelar, Argentina
| | - M Urrutia
- Centro de Investigaciones Endocrinológicas "Dr. César Bergadá" (CEDIE), CONICET - FEI - División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD Ciudad Autónoma de Buenos Aires, Argentina
| | - E Dascal
- Centro de Investigaciones Endocrinológicas "Dr. César Bergadá" (CEDIE), CONICET - FEI - División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD Ciudad Autónoma de Buenos Aires, Argentina
| | - G Jaita
- Instituto de Investigaciones Biomédicas (INBIOMED), Facultad de Medicina CONICET, Universidad de Buenos Aires, Paraguay 2155, C1121ABG Ciudad Autónoma de Buenos Aires, Argentina.,Departamento de Biología Celular e Histología, Facultad de Medicina, Universidad de Buenos Aires Buenos, Paraguay 2155, C1121ABG Ciudad Autónoma de Buenos Aires, Argentina
| | - M C Peluffo
- Centro de Investigaciones Endocrinológicas "Dr. César Bergadá" (CEDIE), CONICET - FEI - División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD Ciudad Autónoma de Buenos Aires, Argentina
| |
Collapse
|
11
|
EGFR-dependent tyrosine phosphorylation of integrin β4 is not required for downstream signaling events in cancer cell lines. Sci Rep 2021; 11:8675. [PMID: 33883672 PMCID: PMC8060419 DOI: 10.1038/s41598-021-88134-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/07/2021] [Indexed: 02/02/2023] Open
Abstract
In epithelial cancers, the epidermal growth factor receptor (EGFR) and integrin α6β4 are frequently overexpressed and found to synergistically activate intracellular signaling pathways that promote cell proliferation and migration. In cancer cells, the β4 subunit is phosphorylated at tyrosine residues not normally recognized as kinase substrates; however, the function of these phosphotyrosine residues in cancer cells is a subject of much debate. In EGFR-overexpressing carcinoma cells, we found that the Src family kinase (SFK) inhibitor PP2 reduces β4 tyrosine phosphorylation following the activation of EGFR. However, siRNA mediated knockdown of the SFKs Src, Fyn, Yes and Lyn, individually or in combination, did not affect the EGF-induced phosphorylation of β4. Using phospho-peptide affinity chromatography and mass spectrometry, we found that PLCγ1 binds β4 at the phosphorylated residues Y1422/Y1440, but were unable to verify this interaction in A431 carcinoma cells that overexpress the EGFR. Furthermore, using A431 cells devoid of β4 or reconstituted with phenylalanine specific mutants of β4, the activation of several downstream signaling pathways, including PLCγ/PKC, MAPK and PI3K/Akt, were not substantially affected. We conclude that tyrosine-phosphorylated β4 does not enhance EGFR-mediated signaling in EGFR-overexpressing cells, despite the fact that this integrin subunit is highly tyrosine phosphorylated in these cells.
Collapse
|
12
|
Yang DJ, Moh SH, Choi YH, Kim KW. β-Neoendorphin Enhances Wound Healing by Promoting Cell Migration in Keratinocyte. Molecules 2020; 25:molecules25204640. [PMID: 33053781 PMCID: PMC7587199 DOI: 10.3390/molecules25204640] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 01/01/2023] Open
Abstract
The skin is the largest and a remarkably plastic organ that serves as a protective barrier against environmental stimuli and injuries throughout life. Skin injuries are serious health problems, and wound healing is a critical process to replace devitalized cellular and tissue structures. Although some endogenous opioids are known to be involved in the modulation of wound healing, it remains to be determined whether the β-neoendorphin (β-NEP), an endogenous opioid, has beneficial effects on wound repair in human keratinocyte. In this study, we found that β-NEP accelerated wound repair through activation of mitogen-activated protein kinase (MAPK)/Erk1/2 signaling pathways in human keratinocytes. Moreover, the wound healing effect of β-NEP is mainly through the acceleration of keratinocyte migration without affecting cell proliferation. Therefore, our studies reveal that β-NEP plays an important role in the regulation of wound repair and suggest a therapeutic strategy to promote wound healing using β-NEP.
Collapse
Affiliation(s)
- Dong Joo Yang
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Korea;
- Department of Global Medical Science, Yonsei University Wonju College of Medicine, Wonju 26426, Korea
| | - Sang Hyun Moh
- Anti-aging Research Institute of BIO-FD&C Co. Ltd., Incheon 21990, Korea;
| | - Yun-Hee Choi
- Department of Internal Medicine, Division of Hypothalamic Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Ki Woo Kim
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Korea;
- Department of Applied Biological Science, BK21 FOUR, Yonsei University College of Dentistry, Seoul 03722, Korea
- Correspondence: ; Tel.: +82-2-2228-3052; Fax: +82-2-364-1085
| |
Collapse
|
13
|
Rousselle P, Scoazec JY. Laminin 332 in cancer: When the extracellular matrix turns signals from cell anchorage to cell movement. Semin Cancer Biol 2020; 62:149-165. [PMID: 31639412 DOI: 10.1016/j.semcancer.2019.09.026] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/22/2019] [Accepted: 09/29/2019] [Indexed: 02/07/2023]
Abstract
Laminin 332 is crucial in the biology of epithelia. This large extracellular matrix protein consists of the heterotrimeric assembly of three subunits - α3, β3, and γ2 - and its multifunctionality relies on a number of extracellular proteolytic processing events. Laminin 332 is central to normal epithelium homeostasis by sustaining cell adhesion, polarity, proliferation, and differentiation. It also supports a major function in epithelial tissue formation, repair, and regeneration by buttressing cell migration and survival and basement membrane assembly. Interest in this protein increased after the discovery that its expression is perturbed in tumor cells, cancer-associated fibroblasts, and the tumor microenvironment. This review summarizes current knowledge regarding the established involvement of the laminin 332 γ2 chain in tumor invasiveness and discusses the role of its α3 and β3 subunits.
Collapse
Affiliation(s)
- Patricia Rousselle
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS - Université Lyon 1, Institut de Biologie et Chimie des Protéines, SFR BioSciences Gerland-Lyon Sud, 7 passage du Vercors, F-69367, France.
| | - Jean Yves Scoazec
- Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, 94805 Villejuif cedex, France; Université Paris Sud, Faculté de Médecine de Bicêtre, 94270 Le Kremlin Bicêtre, France
| |
Collapse
|
14
|
Meng X, Liu P, Wu Y, Liu X, Huang Y, Yu B, Han J, Jin H, Tan X. Integrin beta 4 (ITGB4) and its tyrosine-1510 phosphorylation promote pancreatic tumorigenesis and regulate the MEK1-ERK1/2 signaling pathway. Bosn J Basic Med Sci 2020; 20:106-116. [PMID: 31242404 PMCID: PMC7029197 DOI: 10.17305/bjbms.2019.4255] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Accepted: 05/29/2019] [Indexed: 12/11/2022] Open
Abstract
Pancreatic cancer is the fourth leading cause of cancer death, with a 5-year survival rate of only 1–4%. Integrin-mediated cell adhesion is critical for the initiation, progression, and metastasis of cancer. In this study we investigated the role of integrin β4 (ITGB4) and its phosphorylation at tyrosine Y1510 (p-ITGB4-Y1510) in the tumorigenesis of pancreatic cancer. We analyzed the expression of ITGB4 and p-ITGB4-Y1510 in pancreatic cancer tissue and cell lines using immunohistochemistry, Western blot, or semi-quantitative reverse transcription PCR. ITGB4 and p-ITGB4-Y1510 were highly expressed in pancreatic cancer (n = 176) compared with normal pancreatic tissue (n = 171). High p-ITGB4-Y1510 expression correlated with local invasion and distant metastasis of pancreatic cancer, and high ITGB4 was significantly associated with poor survival of patients. Inhibition of ITGB4 by siRNA significantly reduced migration and invasion of PC-1.0 and AsPC-1 cells. Overexpression of the mutant ITGB4-Y1510A (a mutation of tyrosine to alanine at 1510 position) in PC-1.0 and AsPC-1 cells not only blocked the ITGB4 phosphorylation at Y1510 but also suppressed the expression of ITGB4 (p < 0.05 vs. wild-type ITGB4). The transfection of PC-1.0 and AsPC-1 cells with ITGB4-Y1510A significantly decreased the level of p-mitogen-activated protein kinase kinase (MEK)1 (T292) and p-extracellular signal-regulated kinase (ERK)1/2 but did not affect the level of p-MEK1 (T386) and p-MEK2 (T394). Overall, our study showed that ITGB4 and its phosphorylated form promote cell migration and invasion in pancreatic cancer and that p-ITGB4-Y1510 regulates the downstream MEK1-ERK1/2 signaling cascades. Targeting ITGB4 or its phosphorylation at Y1510 may be a novel therapeutic option for pancreatic cancer.
Collapse
Affiliation(s)
- Xiangli Meng
- Department of the First General Surgery, Shengjing Hospital affiliated to China Medical University, Shenyang, China
| | - Peng Liu
- Department of the First General Surgery, Shengjing Hospital affiliated to China Medical University, Shenyang, China
| | - Yunhao Wu
- Department of the First General Surgery, Shengjing Hospital affiliated to China Medical University, Shenyang, China
| | - Xinlu Liu
- Department of Anus and Intestine Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yinpeng Huang
- Minimally Invasive Area of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Boqiang Yu
- Department of General Surgery, Fushun Central Hospital, Fushun, China
| | - Jiahong Han
- Department of Surgery, Liaoning Electric Power Center Hospital, Shenyang, China.
| | - Haoyi Jin
- Department of the First General Surgery, Shengjing Hospital affiliated to China Medical University, Shenyang, China.
| | - Xiaodong Tan
- Department of the First General Surgery, Shengjing Hospital affiliated to China Medical University, Shenyang, China.
| |
Collapse
|
15
|
Cruz da Silva E, Dontenwill M, Choulier L, Lehmann M. Role of Integrins in Resistance to Therapies Targeting Growth Factor Receptors in Cancer. Cancers (Basel) 2019; 11:cancers11050692. [PMID: 31109009 PMCID: PMC6562376 DOI: 10.3390/cancers11050692] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 02/07/2023] Open
Abstract
Integrins contribute to cancer progression and aggressiveness by activating intracellular signal transduction pathways and transducing mechanical tension forces. Remarkably, these adhesion receptors share common signaling networks with receptor tyrosine kinases (RTKs) and support their oncogenic activity, thereby promoting cancer cell proliferation, survival and invasion. During the last decade, preclinical studies have revealed that integrins play an important role in resistance to therapies targeting RTKs and their downstream pathways. A remarkable feature of integrins is their wide-ranging interconnection with RTKs, which helps cancer cells to adapt and better survive therapeutic treatments. In this context, we should consider not only the integrins expressed in cancer cells but also those expressed in stromal cells, since these can mechanically increase the rigidity of the tumor microenvironment and confer resistance to treatment. This review presents some of these mechanisms and outlines new treatment options for improving the efficacy of therapies targeting RTK signaling.
Collapse
Affiliation(s)
- Elisabete Cruz da Silva
- UMR 7021 CNRS, Laboratoire de Bioimagerie et Pathologies, Tumoral Signaling and Therapeutic Targets, Université de Strasbourg, Faculté de Pharmacie, 67401 Illkirch, France.
| | - Monique Dontenwill
- UMR 7021 CNRS, Laboratoire de Bioimagerie et Pathologies, Tumoral Signaling and Therapeutic Targets, Université de Strasbourg, Faculté de Pharmacie, 67401 Illkirch, France.
| | - Laurence Choulier
- UMR 7021 CNRS, Laboratoire de Bioimagerie et Pathologies, Tumoral Signaling and Therapeutic Targets, Université de Strasbourg, Faculté de Pharmacie, 67401 Illkirch, France.
| | - Maxime Lehmann
- UMR 7021 CNRS, Laboratoire de Bioimagerie et Pathologies, Tumoral Signaling and Therapeutic Targets, Université de Strasbourg, Faculté de Pharmacie, 67401 Illkirch, France.
| |
Collapse
|
16
|
Manso JA, Gómez-Hernández M, Carabias A, Alonso-García N, García-Rubio I, Kreft M, Sonnenberg A, de Pereda JM. Integrin α6β4 Recognition of a Linear Motif of Bullous Pemphigoid Antigen BP230 Controls Its Recruitment to Hemidesmosomes. Structure 2019; 27:952-964.e6. [PMID: 31006587 DOI: 10.1016/j.str.2019.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/13/2019] [Accepted: 03/22/2019] [Indexed: 11/25/2022]
Abstract
Mechanical stability of epithelia requires firm attachment to the basement membrane via hemidesmosomes. Dysfunction of hemidesmosomal proteins causes severe skin-blistering diseases. Two plakins, plectin and BP230 (BPAG1e), link the integrin α6β4 to intermediate filaments in epidermal hemidesmosomes. Here, we show that a linear sequence within the isoform-specific N-terminal region of BP230 binds to the third and fourth FnIII domains of β4. The crystal structure of the complex and mutagenesis analysis revealed that BP230 binds between the two domains of β4. BP230 induces closing of the two FnIII domains that are locked in place by an interdomain ionic clasp required for binding. Disruption of BP230-β4 binding prevents recruitment of BP230 to hemidesmosomes in human keratinocytes, revealing a key role of this interaction for hemidesmosome assembly. Phosphomimetic substitutions in β4 and BP230 destabilize the complex. Thus, our study provides insights into the architecture of hemidesmosomes and potential mechanisms of regulation.
Collapse
Affiliation(s)
- José A Manso
- Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas - University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain
| | - María Gómez-Hernández
- Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas - University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain
| | - Arturo Carabias
- Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas - University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain
| | - Noelia Alonso-García
- Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas - University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain
| | - Inés García-Rubio
- Centro Universitario de la Defensa, Ctra. Huesca s/n, 50090 Zaragoza, Spain
| | - Maaike Kreft
- Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Arnoud Sonnenberg
- Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - José M de Pereda
- Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas - University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain.
| |
Collapse
|
17
|
The Interaction between Laminin-332 and α3β1 Integrin Determines Differentiation and Maintenance of CAFs, and Supports Invasion of Pancreatic Duct Adenocarcinoma Cells. Cancers (Basel) 2018; 11:cancers11010014. [PMID: 30583482 PMCID: PMC6356648 DOI: 10.3390/cancers11010014] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/03/2018] [Accepted: 12/18/2018] [Indexed: 12/15/2022] Open
Abstract
Ranking among the most lethal tumour entities, pancreatic duct adenocarcinoma cells invade neighbouring tissue resulting in high incidence of metastasis. They are supported by tumour stroma fibroblasts which have undergone differentiation into cancer-associated fibroblasts (CAFs). Stiffness of cell substratum, cytokines, such as transforming growth factor-β (TGF-β), and stromal matrix proteins, such as laminin-332, are factors which promote CAF differentiation. In a spheroid culture system, differentiation of CAFs was analysed for laminin-332 production, laminin-binding integrin repertoire, adhesion and migration behaviour, and, in heterospheroids, for their interplay with the pancreatic duct adenocarcinoma AsPC-I cells. Our data reveal that CAFs produce laminin-332 thus contributing to its ectopic deposition within the tumour stroma. Moreover, CAF differentiation correlates with an increased expression of α3β1 integrin, the principal laminin-332-receptor. Beyond its role as novel CAF marker protein, integrin α3β1 crucially determines differentiation and maintenance of the CAF phenotype, as knock-out of the integrin α3 subunit reversed the CAF differentiated state. AsPC-I cells co-cultured in heterospheroids with integrin α3-deficient CAFs invaded less than from heterospheroids with wild-type CAFs. This study highlights the role of integrin α3β1 integrin-laminin-332 interaction of CAFs which promotes and sustains differentiation of CAFs and promotes carcinoma invasion.
Collapse
|
18
|
Huafeng J, Deqing Z, Yong D, Yulian Z, Ailing H. A cross-talk between integrin β4 and epidermal growth factor receptor induces gefitinib chemoresistance to gastric cancer. Cancer Cell Int 2018; 18:50. [PMID: 29618949 PMCID: PMC5879569 DOI: 10.1186/s12935-018-0548-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 03/23/2018] [Indexed: 02/01/2023] Open
Abstract
Background Gastric cancer presents a major health burden worldwide. Therefore, many molecular targeting agents have been evaluated for treatment of gastric cancer. Gefitinib has shown anticancer activity against gastric cancer which work through inhibiting epidermal growth factor receptor (EGFR). However, the effect of gefitinib is limited due to its resistance. Therefore, understanding the mechanisms of gefitinib resistance is desperately needed to formulate novel strategies against gastric cancer. Here, we analyzed resistance mechanism from the crosstalk between EGFR and integrin β4. Methods Integrin β4-expression vector or siRNA were used to analyze the functional effects of integrin β4 on chemoresistance of gastric cancer cells to gefitinib. EGFR and integrin β4 expression, proliferation and apoptosis of gastric cancer cells were assayed by indirect immunofluorescence, western blot, MTT and flow cytometry respectively. EGFR and integrin β4 expression were also assayed on patient samples. Results It was found that the integrin β4 expression was increased in gefitinib-resistant gastric cell line. The upregulated integrin β4 expression was identified to promote gefitinib resistance and proliferation, and inhibit apoptosis, while downregulation of integrin β4 was to inhibit gefitinib resistance and proliferation, and induce apoptosis. Moreover, the overexpression of integrin β4 in SGC7901 cells resulted in the down-regulation of p-EGFR protein levels while down-regulation of integrin β4, significantly resulted in overexpression of p-EGFR. The results of western blot from patients also showed there was obvious negative correlation between p-EGFR and integrin β4 in gastric cancer patients. Conclusion Considering the above results, it is concluded that the interaction of EGFR and integrin β4 may change the sensitivity of gefitinib treatment.
Collapse
Affiliation(s)
- Jia Huafeng
- Department of Gastroenterology, Hongze District People's Hospital, Huai'an, 223100 Jiangsu China
| | - Zhang Deqing
- 2Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu China
| | - Ding Yong
- Department of General Surgery, Hongze District People's Hospital, Huai'an, 223100 Jiangsu China
| | - Zhang Yulian
- Department of Gastroenterology, Hongze District People's Hospital, Huai'an, 223100 Jiangsu China
| | - Hu Ailing
- Department of Oncology, Hongze District People's Hospital, 102 Dongfeng Road, Hongze District, Huai'an, 223100 Jiangsu China
| |
Collapse
|
19
|
Osmani N, Pontabry J, Comelles J, Fekonja N, Goetz JG, Riveline D, Georges-Labouesse E, Labouesse M. An Arf6- and caveolae-dependent pathway links hemidesmosome remodeling and mechanoresponse. Mol Biol Cell 2017; 29:435-451. [PMID: 29237817 PMCID: PMC6014169 DOI: 10.1091/mbc.e17-06-0356] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 12/06/2017] [Accepted: 12/08/2017] [Indexed: 01/08/2023] Open
Abstract
Hemidesmosomes are epithelial-specific cell-matrix adhesions stably anchoring the intracellular keratin network to the extracellular matrix and providing mechanical resilience to epithelia. The small GTPase Arf6 and caveolae are essential for their remodeling, notably in response to external mechanical cues. Hemidesmosomes (HDs) are epithelial-specific cell–matrix adhesions that stably anchor the intracellular keratin network to the extracellular matrix. Although their main role is to protect the epithelial sheet from external mechanical strain, how HDs respond to mechanical stress remains poorly understood. Here we identify a pathway essential for HD remodeling and outline its role with respect to α6β4 integrin recycling. We find that α6β4 integrin chains localize to the plasma membrane, caveolae, and ADP-ribosylation factor-6+ (Arf6+) endocytic compartments. Based on fluorescence recovery after photobleaching and endocytosis assays, integrin recycling between both sites requires the small GTPase Arf6 but neither caveolin1 (Cav1) nor Cavin1. Strikingly, when keratinocytes are stretched or hypo-osmotically shocked, α6β4 integrin accumulates at cell edges, whereas Cav1 disappears from it. This process, which is isotropic relative to the orientation of stretch, depends on Arf6, Cav1, and Cavin1. We propose that mechanically induced HD growth involves the isotropic flattening of caveolae (known for their mechanical buffering role) associated with integrin diffusion and turnover.
Collapse
Affiliation(s)
- Naël Osmani
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Inserm U1109, MN3T, 67200 Strasbourg, France.,Université de Strasbourg, 67000 Strasbourg, France.,LabEx Medalis, Université de Strasbourg, Strasbourg 67000, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), 67000 Strasbourg, France
| | - Julien Pontabry
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Université de Strasbourg, 67000 Strasbourg, France
| | - Jordi Comelles
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Université de Strasbourg, 67000 Strasbourg, France.,Laboratory of Cell Physics, ISIS/IGBMC, CNRS UMR 7006, 67000 Strasbourg, France
| | - Nina Fekonja
- Inserm U1109, MN3T, 67200 Strasbourg, France.,Université de Strasbourg, 67000 Strasbourg, France.,LabEx Medalis, Université de Strasbourg, Strasbourg 67000, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), 67000 Strasbourg, France
| | - Jacky G Goetz
- Inserm U1109, MN3T, 67200 Strasbourg, France.,Université de Strasbourg, 67000 Strasbourg, France.,LabEx Medalis, Université de Strasbourg, Strasbourg 67000, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), 67000 Strasbourg, France
| | - Daniel Riveline
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France .,Université de Strasbourg, 67000 Strasbourg, France.,Laboratory of Cell Physics, ISIS/IGBMC, CNRS UMR 7006, 67000 Strasbourg, France
| | - Elisabeth Georges-Labouesse
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Université de Strasbourg, 67000 Strasbourg, France
| | - Michel Labouesse
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France .,Université de Strasbourg, 67000 Strasbourg, France.,UMR7622-CNRS, IBPS, Sorbonne Université, 75005 Paris, France
| |
Collapse
|
20
|
Sheng W, Chen C, Dong M, Wang G, Zhou J, Song H, Li Y, Zhang J, Ding S. Calreticulin promotes EGF-induced EMT in pancreatic cancer cells via Integrin/EGFR-ERK/MAPK signaling pathway. Cell Death Dis 2017; 8:e3147. [PMID: 29072694 PMCID: PMC5680916 DOI: 10.1038/cddis.2017.547] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 09/13/2017] [Accepted: 09/18/2017] [Indexed: 12/13/2022]
Abstract
Our previous study showed that Calreticulin (CRT) promoted the development of pancreatic cancer (PC) through ERK/MAPK pathway. We next investigate whether CRT promotes EGF-induced epithelial-mesenchymal transition (EMT) in PC via Integrin/EGFR-ERK/MAPK signaling, which has not been reported yet to our knowledge. EGF simultaneously induced EMT and activated Integrin/EGFR-ERK/MAPK signaling pathway in 3 PC cells. However, CRT silencing significantly inhibited EGF function, including inhibiting EGF-induced EMT-like cell morphology, EGF-enhanced cell invasion and migration, and EGF induced the decrease of E-cadherin, ZO-1, and β-catenin and the increase of the key proteins in Integrin/EGFR-ERK/MAPK signaling (pEGFR-tyr1173, Fibronectin, Integrinβ1, c-Myc and pERK). Conversely, CRT overexpression rescued the change of EMT-related proteins induced by EGF in CRT silencing PC cells. Additionally, CRT was co-stained with pEGFR1173 (with EGF), Fibronectin and Integrinβ1 by IF under confocal microscopy and was co-immunoprecipitated with Fibronectin, Integrinβ1 and c-Myc in both PC cells, all of which indicating a close interaction of CRT with Integrin/EGFR-ERK/MAPK signaling pathway in PC. In vivo, CRT silencing inhibited subcutaneous tumor growth and liver metastasis of pancreatic tumor. A positive relationship of CRT with Fibronectin, Integrinβ1, c-Myc and pERK and a negative association of CRT with E-cad was also observed in vivo and clinical samples. Meanwhile, overexpression of the above proteins was closely associated with multiple aggressive clinicopathological characteristics and the poor prognosis of PC patients. CRT promotes EGF-induced EMT in PC cells via Integrin/EGFR-ERK/MAPK signaling pathway, which would be a promising therapy target for PC.
Collapse
Affiliation(s)
- Weiwei Sheng
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang 110001, China
| | - Chuanping Chen
- Department of Clinical Laboratory, the Sixth Peoples' hospital of Shenyang, Shenyang 110003, China
| | - Ming Dong
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang 110001, China
| | - Guosen Wang
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang 110001, China
| | - Jianping Zhou
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang 110001, China
| | - He Song
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang 110001, China
| | - Yang Li
- Department of Cell Biology, China Medical University, Shenyang 110013, China
| | - Jian Zhang
- Department of Cell Biology, China Medical University, Shenyang 110013, China
| | - Shuangning Ding
- Department of Endocrinology and Metabolism in Liaoning Province, the First Hospital of China Medical University, Shenyang 110001, China
| |
Collapse
|
21
|
Knockdown of stem cell regulator Oct4A in ovarian cancer reveals cellular reprogramming associated with key regulators of cytoskeleton-extracellular matrix remodelling. Sci Rep 2017; 7:46312. [PMID: 28406185 PMCID: PMC5390261 DOI: 10.1038/srep46312] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/14/2017] [Indexed: 12/17/2022] Open
Abstract
Oct4A is a master regulator of self-renewal and pluripotency in embryonic stem cells. It is a well-established marker for cancer stem cell (CSC) in malignancies. Recently, using a loss of function studies, we have demonstrated key roles for Oct4A in tumor cell survival, metastasis and chemoresistance in in vitro and in vivo models of ovarian cancer. In an effort to understand the regulatory role of Oct4A in tumor biology, we employed the use of an ovarian cancer shRNA Oct4A knockdown cell line (HEY Oct4A KD) and a global mass spectrometry (MS)-based proteomic analysis to investigate novel biological targets of Oct4A in HEY samples (cell lysates, secretomes and mouse tumor xenografts). Based on significant differential expression, pathway and protein network analyses, and comprehensive literature search we identified key proteins involved with biologically relevant functions of Oct4A in tumor biology. Across all preparations of HEY Oct4A KD samples significant alterations in protein networks associated with cytoskeleton, extracellular matrix (ECM), proliferation, adhesion, metabolism, epithelial-mesenchymal transition (EMT), cancer stem cells (CSCs) and drug resistance was observed. This comprehensive proteomics study for the first time presents the Oct4A associated proteome and expands our understanding on the biological role of this stem cell regulator in carcinomas.
Collapse
|
22
|
The opposing roles of laminin-binding integrins in cancer. Matrix Biol 2017; 57-58:213-243. [DOI: 10.1016/j.matbio.2016.08.007] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 08/02/2016] [Accepted: 08/17/2016] [Indexed: 02/06/2023]
|
23
|
Löffek S, Franzke CW, Helfrich I. Tension in Cancer. Int J Mol Sci 2016; 17:ijms17111910. [PMID: 27854331 PMCID: PMC5133907 DOI: 10.3390/ijms17111910] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 11/02/2016] [Accepted: 11/09/2016] [Indexed: 12/30/2022] Open
Abstract
Integrins represent a large family of cell receptors that mediate adhesion to the extracellular matrix (ECM), thereby modulating a variety of cellular functions that are required for proliferation, migration, malignant conversion and invasiveness. During tumorigenesis the conversion of a tumor cell from sessile, stationary phenotype to an invasive phenotype requires the ability of tumor cells to interact with their environment in order to transduce signals from the ECM into the cells. Hence, there is increasing evidence that changes in the composition, topography and tension of tumor matrix can be sensed by integrin receptors, leading to the regulation of intracellular signalling events which subsequently help to fuel cancer progression. The fact that intracellular signals perceived from integrin ligand binding impact on almost all steps of tumor progression, including tumor cell proliferation, survival, metastatic dissemination and colonization of a metastatic niche, renders integrins as ideal candidates for the development of therapeutic agents. In this review we summarize the role of integrins in cancer with the special focus on cancer therapies and the recent progress that has been made in the understanding of “integrin-induced tension in cancer”. Finally, we conclude with clinical evidence for the role of integrin-mediated mechanotransduction in the development of therapy-resistant tumors.
Collapse
Affiliation(s)
- Stefanie Löffek
- Skin Cancer Unit of the Dermatology Department, Medical Faculty, West German Cancer Center, University Duisburg-Essen, 45147 Essen, Germany.
- German Cancer Consortium (DKTK), University Duisburg-Essen, 45147 Essen, Germany.
| | - Claus-Werner Franzke
- Department of Dermatology and Venerology, Medical Center, University of Freiburg, Hauptstraße 7, 79104 Freiburg, Germany.
| | - Iris Helfrich
- Skin Cancer Unit of the Dermatology Department, Medical Faculty, West German Cancer Center, University Duisburg-Essen, 45147 Essen, Germany.
- German Cancer Consortium (DKTK), University Duisburg-Essen, 45147 Essen, Germany.
| |
Collapse
|
24
|
Heiler S, Wang Z, Zöller M. Pancreatic cancer stem cell markers and exosomes - the incentive push. World J Gastroenterol 2016; 22:5971-6007. [PMID: 27468191 PMCID: PMC4948278 DOI: 10.3748/wjg.v22.i26.5971] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 06/03/2016] [Accepted: 06/28/2016] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer (PaCa) has the highest death rate and incidence is increasing. Poor prognosis is due to late diagnosis and early metastatic spread, which is ascribed to a minor population of so called cancer stem cells (CSC) within the mass of the primary tumor. CSC are defined by biological features, which they share with adult stem cells like longevity, rare cell division, the capacity for self renewal, differentiation, drug resistance and the requirement for a niche. CSC can also be identified by sets of markers, which for pancreatic CSC (Pa-CSC) include CD44v6, c-Met, Tspan8, alpha6beta4, CXCR4, CD133, EpCAM and claudin7. The functional relevance of CSC markers is still disputed. We hypothesize that Pa-CSC markers play a decisive role in tumor progression. This is fostered by the location in glycolipid-enriched membrane domains, which function as signaling platform and support connectivity of the individual Pa-CSC markers. Outside-in signaling supports apoptosis resistance, stem cell gene expression and tumor suppressor gene repression as well as miRNA transcription and silencing. Pa-CSC markers also contribute to motility and invasiveness. By ligand binding host cells are triggered towards creating a milieu supporting Pa-CSC maintenance. Furthermore, CSC markers contribute to the generation, loading and delivery of exosomes, whereby CSC gain the capacity for a cell-cell contact independent crosstalk with the host and neighboring non-CSC. This allows Pa-CSC exosomes (TEX) to reprogram neighboring non-CSC towards epithelial mesenchymal transition and to stimulate host cells towards preparing a niche for metastasizing tumor cells. Finally, TEX communicate with the matrix to support tumor cell motility, invasion and homing. We will discuss the possibility that CSC markers are the initial trigger for these processes and what is the special contribution of CSC-TEX.
Collapse
|
25
|
Langlands AJ, Almet AA, Appleton PL, Newton IP, Osborne JM, Näthke IS. Paneth Cell-Rich Regions Separated by a Cluster of Lgr5+ Cells Initiate Crypt Fission in the Intestinal Stem Cell Niche. PLoS Biol 2016; 14:e1002491. [PMID: 27348469 PMCID: PMC4922642 DOI: 10.1371/journal.pbio.1002491] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/24/2016] [Indexed: 12/25/2022] Open
Abstract
The crypts of the intestinal epithelium house the stem cells that ensure the continual renewal of the epithelial cells that line the intestinal tract. Crypt number increases by a process called crypt fission, the division of a single crypt into two daughter crypts. Fission drives normal tissue growth and maintenance. Correspondingly, it becomes less frequent in adulthood. Importantly, fission is reactivated to drive adenoma growth. The mechanisms governing fission are poorly understood. However, only by knowing how normal fission operates can cancer-associated changes be elucidated. We studied normal fission in tissue in three dimensions using high-resolution imaging and used intestinal organoids to identify underlying mechanisms. We discovered that both the number and relative position of Paneth cells and Lgr5+ cells are important for fission. Furthermore, the higher stiffness and increased adhesion of Paneth cells are involved in determining the site of fission. Formation of a cluster of Lgr5+ cells between at least two Paneth-cell-rich domains establishes the site for the upward invagination that initiates fission. Crypt fission—a process responsible for normal intestinal growth and for the formation of adenomas —is governed by differential adhesion, stiffness, and proliferation of Lgr5+ cells and Paneth cells in the intestinal stem cell niche. The intestinal tract undergoes many changes during development, and after birth it has to significantly elongate and widen in order to increase the surface area for absorption. Crypt fission is a key process in intestinal tissue expansion and is also involved in adenoma growth. Despite the importance of crypt fission, the mechanisms controlling it are poorly understood. Understanding how crypt fission is regulated in normal tissue can help us to determine how the process changes in cancer. Here, we describe cellular behaviour during crypt fission. We identify a specific cellular arrangement in the intestinal stem cell niche that is associated with crypt fission and reveals insights into the mechanisms controlling crypt fission. There are two different cell types at the crypt base, Lgr5+ and Paneth cells, which play distinct roles in this process. We find that both their location and differences between them in proliferation, stiffness, and adhesion are important for fission. Based on our data, we propose a model in which stiffer and more adhesive Paneth cells are necessary to shape the crypt base and establish where fission occurs, whereas softer Lgr5+ cells allow shape changes and proliferation to expand newly formed crypts. Our model is an important step in understanding how crypt fission is initiated in normal tissue and provides a framework to understand how the process changes in tumorigenesis.
Collapse
Affiliation(s)
- Alistair J. Langlands
- Cell and Developmental Biology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Axel A. Almet
- School of Mathematics and Statistics, University of Melbourne, Victoria, Australia
| | - Paul L. Appleton
- Cell and Developmental Biology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Ian P. Newton
- Cell and Developmental Biology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - James M. Osborne
- School of Mathematics and Statistics, University of Melbourne, Victoria, Australia
| | - Inke S. Näthke
- Cell and Developmental Biology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
- * E-mail:
| |
Collapse
|
26
|
Yang DJ, Lee KS, Ko CM, Moh SH, Song J, Hur LC, Cheon YW, Yang SH, Choi YH, Kim KW. Leucine-enkephalin promotes wound repair through the regulation of hemidesmosome dynamics and matrix metalloprotease. Peptides 2016; 76:57-64. [PMID: 26763532 DOI: 10.1016/j.peptides.2015.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/03/2015] [Accepted: 12/29/2015] [Indexed: 11/17/2022]
Abstract
The skin responds to environmental stressors by coordinated actions of neuropeptides and their receptors. An endogenous peptide for δ-opioid receptor (DOPr), Leu-enkephalin (L-ENK), is expressed in the skin and its expression is altered in pathological conditions. Although the importance of DOPr is rapidly gaining recognition, the molecular mechanisms underlying its effects on wound healing are largely undefined. We show here that L-ENK induced activation of Erk, P90(RSK), and Elk-1 and promoted the disruption of hemidesmosomes and the expression of matrix metalloprotease (MMP)-2 and MMP-9, important processes for wound healing. Treatment with Erk inhibitor blocked activation of P90(RSK) and Elk-1 and significantly blunted wound repair. Therefore, our results suggest that activation of Erk and its downstream effectors, P90(RSK) and Elk-1, are critical for DOPr-mediated skin homeostasis.
Collapse
Affiliation(s)
- Dong Joo Yang
- Department of Pharmacology, Wonju College of Medicine, Yonsei University, Wonju 26426, Republic of Korea; Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Wonju 26426, Republic of Korea
| | - Kyung Suk Lee
- Department of Plastic and Reconstructive Surgery, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju 52828, Republic of Korea
| | - Chang Mann Ko
- Department of Pharmacology, Wonju College of Medicine, Yonsei University, Wonju 26426, Republic of Korea
| | - Sang Hyun Moh
- Anti-aging Research Institute of BIO-FD&C Co. Ltd., Incheon 21990, Republic of Korea
| | - Jihyeok Song
- Anti-aging Research Institute of BIO-FD&C Co. Ltd., Incheon 21990, Republic of Korea
| | - Lucia C Hur
- Derma-Lucia Skinceuticals LLC, 7500 Escala Drive, Austin, TX 78735, USA
| | - Young Woo Cheon
- Department of Plastic and Reconstructive Surgery, Gachon University Gil Medical Center, Gachon University, School of Medicine, 1198 Guwol-Dong, Namdong-Gu, Incheon 21565, Republic of Korea
| | - Seung Ho Yang
- Department of Pharmacology, Wonju College of Medicine, Yonsei University, Wonju 26426, Republic of Korea
| | - Yun-Hee Choi
- Anti-aging Research Institute of BIO-FD&C Co. Ltd., Incheon 21990, Republic of Korea.
| | - Ki Woo Kim
- Department of Pharmacology, Wonju College of Medicine, Yonsei University, Wonju 26426, Republic of Korea; Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Wonju 26426, Republic of Korea.
| |
Collapse
|
27
|
Li W, Liu C, Zhao C, Zhai L, Lv S. Downregulation of β3 integrin by miR-30a-5p modulates cell adhesion and invasion by interrupting Erk/Ets‑1 network in triple-negative breast cancer. Int J Oncol 2016; 48:1155-64. [PMID: 26781040 DOI: 10.3892/ijo.2016.3319] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 12/15/2015] [Indexed: 11/06/2022] Open
Abstract
Integrins are adhesion receptors involved in bidirectional signaling and are crucial for various cellular responses during normal homeostasis and pathological conditions, such as cancer progression and metastasis. In the present study, we demonstrated that blockage of β3 integrin-mediated cell- extracellular matrix interactions restrained triple-negative breast cancer (TNBC) growth, and elevated β3 integrin can trigger the rewiring of Erk/Ets-1 signaling pathways, thereby enhancing cell growth and invasion. Ectopic expression of miRNA has been implicated in the deregulation of integrin expression and activity, blocking of cancer tumor development and progression, and acquisition of metastatic phenotype. miR-30a-5p expression has been implicated in the progression of breast cancer. Overexpression of miR-30a-5p suppressed the proliferation, migration and invasion of breast cancer cells. On the contrary, inhibition of miR-30a-5p promoted the proliferation, migration, and invasion of TNBC cells by suppressing the expression of ERK/Ets-1 signal. An inverse correlation was found between the mRNA expressions of miR-30a-5p and β3 integrin in TNBC samples. Furthermore, bioinformatics analysis revealed the putative miR-30 binding sites in the 3'-UTR of β3 integrin. Results of luciferase assay revealed a strong repression of luciferase activity after transfection with miR‑30a-5p and wild-type 3'-UTR of β3 integrin. In TNBC cells, miR-30a-5p promoted an epithelial phenotype and suppressed invasion by specifically targeting β3 integrin subunit to subsequently interdict the β3 integrin/Erk/Ets-1 network.
Collapse
Affiliation(s)
- Wentong Li
- Department of Pathology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
| | - Chuanliang Liu
- The Third Department of Health Care, Weifang People's Hospital, Weifang, Shandong 261053, P.R. China
| | - Chunling Zhao
- Department of Medical Biology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
| | - Limin Zhai
- Department of Pathology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
| | - Shijun Lv
- Department of Pathology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
| |
Collapse
|
28
|
Lommel MJ, Trairatphisan P, Gäbler K, Laurini C, Muller A, Kaoma T, Vallar L, Sauter T, Schaffner-Reckinger E. L-plastin Ser5 phosphorylation in breast cancer cells and in vitro is mediated by RSK downstream of the ERK/MAPK pathway. FASEB J 2015; 30:1218-33. [PMID: 26631483 DOI: 10.1096/fj.15-276311] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 11/16/2015] [Indexed: 12/20/2022]
Abstract
Deregulated cell migration and invasion are hallmarks of metastatic cancer cells. Phosphorylation on residue Ser5 of the actin-bundling protein L-plastin activates L-plastin and has been reported to be crucial for invasion and metastasis. Here, we investigate signal transduction leading to L-plastin Ser5 phosphorylation using 4 human breast cancer cell lines. Whole-genome microarray analysis comparing cell lines with different invasive capacities and corresponding variations in L-plastin Ser5 phosphorylation level revealed that genes of the ERK/MAPK pathway are differentially expressed. It is noteworthy that in vitro kinase assays showed that ERK/MAPK pathway downstream ribosomal protein S6 kinases α-1 (RSK1) and α-3 (RSK2) are able to directly phosphorylate L-plastin on Ser5. Small interfering RNA- or short hairpin RNA-mediated knockdown and activation/inhibition studies followed by immunoblot analysis and computational modeling confirmed that ribosomal S6 kinase (RSK) is an essential activator of L-plastin. Migration and invasion assays showed that RSK knockdown led to a decrease of up to 30% of migration and invasion of MDA-MB-435S cells. Although the presence of L-plastin was not necessary for migration/invasion of these cells, immunofluorescence assays illustrated RSK-dependent recruitment of Ser5-phosphorylated L-plastin to migratory structures. Altogether, we provide evidence that the ERK/MAPK pathway is involved in L-plastin Ser5 phosphorylation in breast cancer cells with RSK1 and RSK2 kinases able to directly phosphorylate L-plastin residue Ser5.
Collapse
Affiliation(s)
- Maiti J Lommel
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Panuwat Trairatphisan
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Karoline Gäbler
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Christina Laurini
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Arnaud Muller
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Tony Kaoma
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Laurent Vallar
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Thomas Sauter
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Elisabeth Schaffner-Reckinger
- *Laboratory of Cytoskeleton and Cell Plasticity and Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg City, Luxembourg; and Genomics Research Unit, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| |
Collapse
|
29
|
Mycosporine-Like Amino Acids Promote Wound Healing through Focal Adhesion Kinase (FAK) and Mitogen-Activated Protein Kinases (MAP Kinases) Signaling Pathway in Keratinocytes. Mar Drugs 2015; 13:7055-66. [PMID: 26703626 PMCID: PMC4699230 DOI: 10.3390/md13127056] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/10/2015] [Accepted: 11/18/2015] [Indexed: 12/02/2022] Open
Abstract
Mycosporine-like amino acids (MAAs) are secondary metabolites found in diverse marine, freshwater, and terrestrial organisms. Evidence suggests that MAAs have several beneficial effects on skin homeostasis such as protection against UV radiation and reactive oxygen species (ROS). In addition, MAAs are also involved in the modulation of skin fibroblasts proliferation. However, the regulatory function of MAAs on wound repair in human skin is not yet clearly elucidated. To investigate the roles of MAAs on the wound healing process in human keratinocytes, three MAAs, Shinorine (SH), Mycosporine-glycine (M-Gly), and Porphyra (P334) were purified from Chlamydomonas hedlyei and Porphyra yezoensis. We found that SH, M-Gly, and P334 have significant effects on the wound healing process in human keratinocytes and these effects were mediated by activation of focal adhesion kinases (FAK), extracellular signal-regulated kinases (ERK), and c-Jun N-terminal kinases (JNK). These results suggest that MAAs accelerate wound repair by activating the FAK-MAPK signaling pathways. This study also indicates that MAAs can act as a new wound healing agent and further suggests that MAAs might be a novel biomaterial for wound healing therapies.
Collapse
|
30
|
te Molder L, Sonnenberg A. PKD2 and RSK1 Regulate Integrin β4 Phosphorylation at Threonine 1736. PLoS One 2015; 10:e0143357. [PMID: 26580203 PMCID: PMC4651554 DOI: 10.1371/journal.pone.0143357] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 11/03/2015] [Indexed: 01/26/2023] Open
Abstract
The integrin α6β4, a major component of hemidesmosomes (HDs), stabilizes keratinocyte cell adhesion to the epidermal basement membrane through binding to the cytoskeletal linker protein plectin and association with keratin filaments. Disruption of the α6β4-plectin interaction through phosphorylation of the β4 subunit results in a reduction in adhesive strength of keratinocytes to laminin-332 and the dissolution of HDs. Previously, we have demonstrated that phosphorylation of T1736 in the C-terminal end of the β4 cytoplasmic domain disrupts the interaction of β4 with the plakin domain of plectin. Furthermore, we showed that β4-T1736 can be phosphorylated by PKD1 in vitro, and although both PMA and EGF induced T1736 phosphorylation, only PMA was able to activate PKD1. Here, we show that depletion of [Ca2+]i augments PMA- and EGF-induced phosphorylation of β4-T1736 and that this is caused by inhibition of the calcium-sensitive protein phosphatase calcineurin and augmentation of ERK1/2 activation. We also show that in keratinocytes the PMA-stimulated phosphorylation of β4-T1736 primarily is mediated by PKD2 activation downstream of PKCδ. On the other hand, both the EGF-stimulated phosphorylation of T1736 and the EGF-induced dissolution of HDs are dependent on a functional MAPK signaling pathway, and treatment with the RSK inhibitor BI-D1870 prevented EGF-stimulated phosphorylation of β4-T1736. Moreover, phosphorylation of β4-T1736 is enhanced by overexpression of wild-type RSK1, while it is reduced by the expression of kinase-inactive RSK1 or by siRNA-mediated depletion of RSK1. In summary, our data indicate that different stimuli can lead to the phosphorylation of β4-T1736 by either PKD2 or RSK1.
Collapse
Affiliation(s)
- Lisa te Molder
- The Division of Cell Biology, The Netherlands Cancer Inst., Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Arnoud Sonnenberg
- The Division of Cell Biology, The Netherlands Cancer Inst., Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| |
Collapse
|
31
|
Gardner AK, Kelly CS, van Eps AW, Burns TA, Watts MR, Belknap JK. Mitogen-activated kinase pathway activation in epidermal lamellae in the acute stages of carbohydrate overload laminitis models and the effect of regional deep hypothermia on signalling pathways. Equine Vet J 2015. [PMID: 26222495 DOI: 10.1111/evj.12488] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
REASONS FOR PERFORMING STUDY In sepsis models, mitogen-activated protein kinases (MAPKs) are reported to incite inflammatory injury to tissues and are purported to be a therapeutic target. OBJECTIVES To assess MAPK signalling in lamellae in sepsis-related laminitis (SRL) at different time points after induction of laminitis via carbohydrate overload, and to determine the effect of regional deep hypothermia (RDH) on MAPK signalling. STUDY DESIGN In vitro study using archived tissue samples. METHODS Lamellar concentrations of MAPKs were assessed in archived lamellar samples from 2 studies: 1) the starch gruel model of SRL with 3 groups (n = 6/group) of horses (control, onset of fever [DEV] Obel Grade 1 lameness [OG1]); and 2) from limbs maintained at ambient (AMB) and hypothermic (ICE) temperatures (n = 6/group) in animals given a bolus of oligofructose. Immunoblotting and immunolocalisation were used to assess lamellar concentrations and cellular localisation of total and activated (phosphorylated) forms of p38 MAPK, extracellular-regulated kinase (ERK) 1/2, and stress-activated protein kinase/c-jun N terminal kinase (SAPK/JNK) 1/2. RESULTS Lamellar samples had statistically significant increased concentrations of activated ERK 1/2 at the onset of OG1 laminitis (vs. control) in the starch gruel model, but showed no significant change between ICE and AMB limbs in the RDH model. Phospho-SAPK/JNK 1/2 exhibited a similar significant increase in the OG1 samples, but was also increased in ICE (vs. AMB) limbs. No statistically significant changes in lamellar p38 MAPK concentrations were noted. CONCLUSIONS Increased concentrations of activated ERK 1/2 and SAPK/JNK in the acute stages of SRL indicate a possible role of these signalling proteins in lamellar injury. Signalling related to ERK 1/2 and SAPK/JNK 1/2 pathways should be further investigated to determine if these play a detrimental role in laminitis and may be therapeutic targets to be manipulated independently of RDH.
Collapse
Affiliation(s)
- A K Gardner
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, USA
| | - C S Kelly
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, USA
| | - A W van Eps
- School of Veterinaary Science, University of Queensland, Australia
| | - T A Burns
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, USA
| | - M R Watts
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, USA
| | - J K Belknap
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, USA
| |
Collapse
|
32
|
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
|
33
|
Molecular architecture and function of the hemidesmosome. Cell Tissue Res 2015; 360:529-44. [PMID: 26017636 PMCID: PMC4452579 DOI: 10.1007/s00441-015-2216-6] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 11/03/2014] [Indexed: 01/13/2023]
Abstract
Hemidesmosomes are multiprotein complexes that facilitate the stable adhesion of basal epithelial cells to the underlying basement membrane. The mechanical stability of hemidesmosomes relies on multiple interactions of a few protein components that form a membrane-embedded tightly-ordered complex. The core of this complex is provided by integrin α6β4 and P1a, an isoform of the cytoskeletal linker protein plectin that is specifically associated with hemidesmosomes. Integrin α6β4 binds to the extracellular matrix protein laminin-332, whereas P1a forms a bridge to the cytoplasmic keratin intermediate filament network. Other important components are BPAG1e, the epithelial isoform of bullous pemphigoid antigen 1, BPAG2, a collagen-type transmembrane protein and CD151. Inherited or acquired diseases in which essential components of the hemidesmosome are missing or structurally altered result in tissue fragility and blistering. Modulation of hemidesmosome function is of crucial importance for a variety of biological processes, such as terminal differentiation of basal keratinocytes and keratinocyte migration during wound healing and carcinoma invasion. Here, we review the molecular characteristics of the proteins that make up the hemidesmosome core structure and summarize the current knowledge about how their assembly and turnover are regulated by transcriptional and post-translational mechanisms.
Collapse
|
34
|
Ketema M, Secades P, Kreft M, Nahidiazar L, Janssen H, Jalink K, de Pereda JM, Sonnenberg A. The rod domain is not essential for the function of plectin in maintaining tissue integrity. Mol Biol Cell 2015; 26:2402-17. [PMID: 25971800 PMCID: PMC4571296 DOI: 10.1091/mbc.e15-01-0043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 05/06/2015] [Indexed: 11/22/2022] Open
Abstract
Plectin is a cytoskeletal linker protein that consists of a central rod domain connecting two globular domains. Rodless plectin is able to functionally compensate for the loss of full-length plectin in mice and, like full-length plectin, is able to form dimers. Epidermolysis bullosa simplex associated with late-onset muscular dystrophy (EBS-MD) is an autosomal recessive disorder resulting from mutations in the plectin gene. The majority of these mutations occur within the large exon 31 encoding the central rod domain and leave the production of a low-level rodless plectin splice variant unaffected. To investigate the function of the rod domain, we generated rodless plectin mice through conditional deletion of exon 31. Rodless plectin mice develop normally without signs of skin blistering or muscular dystrophy. Plectin localization and hemidesmosome organization are unaffected in rodless plectin mice. However, superresolution microscopy revealed a closer juxtaposition of the C-terminus of plectin to the integrin β4 subunit in rodless plectin keratinocytes. Wound healing occurred slightly faster in rodless plectin mice than in wild-type mice, and keratinocytes migration was increased in the absence of the rod domain. The faster migration of rodless plectin keratinocytes is not due to altered biochemical properties because, like full-length plectin, rodless plectin is a dimeric protein. Our data demonstrate that rodless plectin can functionally compensate for the loss of full-length plectin in mice. Thus the low expression level of plectin rather than the absence of the rod domain dictates the development of EBS-MD.
Collapse
Affiliation(s)
- Mirjam Ketema
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Pablo Secades
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Maaike Kreft
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Leila Nahidiazar
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Hans Janssen
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Kees Jalink
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Jose M de Pereda
- Instituto de Biología Molecular y Celular del Cancer, University of Salamanca-CSIC, E-37007 Salamanca, Spain
| | - Arnoud Sonnenberg
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| |
Collapse
|
35
|
Stepp MA, Pal-Ghosh S, Tadvalkar G, Pajoohesh-Ganji A. Syndecan-1 and Its Expanding List of Contacts. Adv Wound Care (New Rochelle) 2015; 4:235-249. [PMID: 25945286 DOI: 10.1089/wound.2014.0555] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 06/01/2014] [Indexed: 12/13/2022] Open
Abstract
Significance: The binding of cytokines and growth factors to heparan sulfate (HS) chains on proteoglycans generates gradients that control development and regulate wound healing. Syndecan-1 (sdc1) is an integral membrane HS proteoglycan. Its structure allows it to bind with cytosolic, transmembrane, and extracellular matrix (ECM) proteins. It plays important roles in mediating key events during wound healing because it regulates a number of important processes, including cell adhesion, cell migration, endocytosis, exosome formation, and fibrosis. Recent Advances: Recent studies reveal that sdc1 regulates wound healing by altering integrin activation. Differences in integrin activation lead to cell-type-specific changes in the rate of cell migration and ECM assembly. Sdc1 also regulates endocytosis and the formation and release of exosomes. Critical Issues: Understanding how sdc1 facilitates wound healing and resolution will improve treatment options for elderly and diabetic patients with delayed wound healing. Studies showing that sdc1 function is altered in cancer are relevant to those interested in controlling fibrosis and scarring. Future Directions: The key to understanding the various functions ascribed to sdc1 is resolving how it interacts with its numerous binding partners. The role played by chondroitin sulfate glycosaminoglycan (GAG) chains on the ability of sdc1 to associate with its ligands needs further investigation. At wound sites heparanase can cleave the HS GAG chains of sdc1, alter its ability to bind cytokines, and induce shedding of the ectodomain. This review will discuss how the unique structure of sdc1 allows it to play key roles in cell signaling, ECM assembly, and wound healing.
Collapse
Affiliation(s)
- Mary Ann Stepp
- Department of Anatomy and Regenerative Biology, George Washington University Medical School, Washington, District of Columbia
- Department of Ophthalmology, George Washington University Medical School, Washington, District of Columbia
| | - Sonali Pal-Ghosh
- Department of Anatomy and Regenerative Biology, George Washington University Medical School, Washington, District of Columbia
| | - Gauri Tadvalkar
- Department of Anatomy and Regenerative Biology, George Washington University Medical School, Washington, District of Columbia
| | - Ahdeah Pajoohesh-Ganji
- Department of Anatomy and Regenerative Biology, George Washington University Medical School, Washington, District of Columbia
| |
Collapse
|
36
|
Song JG, Kostan J, Drepper F, Knapp B, de Almeida Ribeiro E, Konarev PV, Grishkovskaya I, Wiche G, Gregor M, Svergun DI, Warscheid B, Djinović-Carugo K. Structural insights into Ca2+-calmodulin regulation of Plectin 1a-integrin β4 interaction in hemidesmosomes. Structure 2015; 23:558-570. [PMID: 25703379 PMCID: PMC4353693 DOI: 10.1016/j.str.2015.01.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 12/24/2014] [Accepted: 01/06/2015] [Indexed: 02/02/2023]
Abstract
The mechanical stability of epithelial cells, which protect organisms from harmful external factors, is maintained by hemidesmosomes via the interaction between plectin 1a (P1a) and integrin α6β4. Binding of calcium-calmodulin (Ca(2+)-CaM) to P1a together with phosphorylation of integrin β4 disrupts this complex, resulting in disassembly of hemidesmosomes. We present structures of the P1a actin binding domain either in complex with the N-ter lobe of Ca(2+)-CaM or with the first pair of integrin β4 fibronectin domains. Ca(2+)-CaM binds to the N-ter isoform-specific tail of P1a in a unique manner, via its N-ter lobe in an extended conformation. Structural, cell biology, and biochemical studies suggest the following model: binding of Ca(2+)-CaM to an intrinsically disordered N-ter segment of plectin converts it to an α helix, which repositions calmodulin to displace integrin β4 by steric repulsion. This model could serve as a blueprint for studies aimed at understanding how Ca(2+)-CaM or EF-hand motifs regulate F-actin-based cytoskeleton.
Collapse
Affiliation(s)
- Jae-Geun Song
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Campus Vienna Biocenter 5, A-1030 Vienna, Austria
| | - Julius Kostan
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Campus Vienna Biocenter 5, A-1030 Vienna, Austria
| | - Friedel Drepper
- Department of Functional Proteomics and Biochemistry, Institute of Biology II and BIOSS Centre for Biological Signaling Studies, University of Freiburg, Schaenzlestrasse 1, D-79104 Freiburg, Germany
| | - Bettina Knapp
- Department of Functional Proteomics and Biochemistry, Institute of Biology II and BIOSS Centre for Biological Signaling Studies, University of Freiburg, Schaenzlestrasse 1, D-79104 Freiburg, Germany
| | - Euripedes de Almeida Ribeiro
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Campus Vienna Biocenter 5, A-1030 Vienna, Austria
| | - Petr V Konarev
- EMBL-Hamburg c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
| | - Irina Grishkovskaya
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Campus Vienna Biocenter 5, A-1030 Vienna, Austria
| | - Gerhard Wiche
- Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Dr. Bohrgasse 9, A-1030 Vienna, Austria
| | - Martin Gregor
- Department of Integrative Biology, Institute of Molecular Genetics of the ASCR, Vídeňská 1083, Prague 4 CZ-14220, Czech Republic
| | - Dmitri I Svergun
- EMBL-Hamburg c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
| | - Bettina Warscheid
- Department of Functional Proteomics and Biochemistry, Institute of Biology II and BIOSS Centre for Biological Signaling Studies, University of Freiburg, Schaenzlestrasse 1, D-79104 Freiburg, Germany
| | - Kristina Djinović-Carugo
- Department of Structural and Computational Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter (VBC), Campus Vienna Biocenter 5, A-1030 Vienna, Austria; Department of Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia.
| |
Collapse
|
37
|
Keratins Stabilize Hemidesmosomes through Regulation of β4-Integrin Turnover. J Invest Dermatol 2015; 135:1609-1620. [PMID: 25668239 DOI: 10.1038/jid.2015.46] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/12/2014] [Accepted: 12/31/2014] [Indexed: 01/16/2023]
Abstract
Epidermal integrity and wound healing depend on remodeling of cell-matrix contacts including hemidesmosomes. Mutations in β4-integrin and plectin lead to severe epidermolysis bullosa (EB). Whether mutations in keratins K5 or K14, which cause EB simplex, also compromise cell-matrix adhesion through altering hemidesmosomal components is not well investigated. In particular, the dependence of β4-integrin endocytosis and turnover on keratins remains incompletely understood. Here, we show that the absence of keratins causes loss of plectin-β4-integrin interaction and elevated β4-integrin phosphorylation at Ser1354 and Ser1362. This triggered a caveolin-dependent endocytosis of β4-integrin but not of other integrins through Rab5 and Rab11 compartments in keratinocytes. Expressing a phospho-deficient β4-integrin mutant reduces β4-integrin endocytosis and rescues plectin localization in keratin-free cells. β4-integrin phosphorylation in the absence of keratins resulted from elevated Erk1/2 activity downstream of increased EGFR and PKCα signaling. Further, increased Erk1/2 phosphorylation and altered plectin localization occur in keratin-deficient mouse epidermis in vivo. Strikingly, expression of the K14-R125P EBS mutant also resulted in plectin mislocalization and elevated β4-integrin turnover, suggesting disease relevance. Our data underscore a major role of keratins in controlling β4-integrin endocytosis involving a plectin-Erk1/2-dependent mechanism relevant for epidermal differentiation and pathogenesis.
Collapse
|
38
|
Molecular architecture and function of the hemidesmosome. Cell Tissue Res 2014; 360:363-78. [PMID: 25487405 PMCID: PMC4544487 DOI: 10.1007/s00441-014-2061-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 11/03/2014] [Indexed: 01/07/2023]
Abstract
Hemidesmosomes are multiprotein complexes that facilitate the stable adhesion of basal epithelial cells to the underlying basement membrane. The mechanical stability of hemidesmosomes relies on multiple interactions of a few protein components that form a membrane-embedded tightly-ordered complex. The core of this complex is provided by integrin α6β4 and P1a, an isoform of the cytoskeletal linker protein plectin that is specifically associated with hemidesmosomes. Integrin α6β4 binds to the extracellular matrix protein laminin-332, whereas P1a forms a bridge to the cytoplasmic keratin intermediate filament network. Other important components are BPAG1e, the epithelial isoform of bullous pemphigoid antigen 1, BPAG2, a collagen-type transmembrane protein and CD151. Inherited or acquired diseases in which essential components of the hemidesmosome are missing or structurally altered result in tissue fragility and blistering. Modulation of hemidesmosome function is of crucial importance for a variety of biological processes, such as terminal differentiation of basal keratinocytes and keratinocyte migration during wound healing and carcinoma invasion. Here, we review the molecular characteristics of the proteins that make up the hemidesmosome core structure and summarize the current knowledge about how their assembly and turnover are regulated by transcriptional and post-translational mechanisms.
Collapse
|
39
|
Osmani N, Labouesse M. Remodeling of keratin-coupled cell adhesion complexes. Curr Opin Cell Biol 2014; 32:30-8. [PMID: 25460779 DOI: 10.1016/j.ceb.2014.10.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/13/2014] [Accepted: 10/18/2014] [Indexed: 12/12/2022]
Abstract
Epithelial cells constitute the main barrier between the inside and outside of organs, acting as gatekeepers of their structure and integrity. Hemidesmosomes and desmosomes are respectively cell-matrix and cell-cell adhesions coupled to the intermediate filament cytoskeleton. These adhesions ensure mechanical integrity of the epithelial barrier. Although desmosomes and hemidesmosomes are essential in maintaining strong cell-cell and cell-matrix adhesions, there is an emerging view that they should be remodeled in order to maintain epithelial homeostasis. Here we review the adhesion properties of desmosomes and hemidesmosomes, as well as the mechanisms driving their remodeling. We also discuss recent data suggesting that keratin-coupled adhesion complexes can sense the biomechanical cellular environment and participate in the cellular response to such external cues.
Collapse
Affiliation(s)
- Naël Osmani
- IGBMC, Development and Stem Cells Program, 67400 Illkirch, France; CNRS (UMR 7104), 67400 Illkirch, France; INSERM (U964), 67400 Illkirch, France; Université de Strasbourg, 67400 Illkirch, France.
| | - Michel Labouesse
- IGBMC, Development and Stem Cells Program, 67400 Illkirch, France; CNRS (UMR 7104), 67400 Illkirch, France; INSERM (U964), 67400 Illkirch, France; Université de Strasbourg, 67400 Illkirch, France.
| |
Collapse
|
40
|
Wang H, Jin H, Beauvais DM, Rapraeger AC. Cytoplasmic domain interactions of syndecan-1 and syndecan-4 with α6β4 integrin mediate human epidermal growth factor receptor (HER1 and HER2)-dependent motility and survival. J Biol Chem 2014; 289:30318-30332. [PMID: 25202019 PMCID: PMC4215216 DOI: 10.1074/jbc.m114.586438] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/02/2014] [Indexed: 12/14/2022] Open
Abstract
Epithelial cells are highly dependent during wound healing and tumorigenesis on the α6β4 integrin and its association with receptor tyrosine kinases. Previous work showed that phosphorylation of the β4 subunit upon matrix engagement depends on the matrix receptor syndecan (Sdc)-1 engaging the cytoplasmic domain of the β4 integrin and coupling of the integrin to human epidermal growth factor receptor-2 (HER2). In this study, HER2-dependent migration activated by matrix engagement is compared with migration stimulated by EGF. We find that whereas HER2-dependent migration depends on Sdc1, EGF-dependent migration depends on a complex consisting of human epidermal growth factor receptor-1 (HER1, commonly known as EGFR), α6β4, and Sdc4. The two syndecans recognize distinct sites at the extreme C terminus of the β4 integrin cytoplasmic domain. The binding motif in Sdc1 is QEEXYX, composed in part by its syndecan-specific variable (V) region and in part by the second conserved (C2) region that it shares with other syndecans. A cell-penetrating peptide containing this sequence competes for HER2-dependent epithelial migration and carcinoma survival, although it is without effect on the EGFR-stimulated mechanism. β4 mutants bearing mutations specific for Sdc1 and Sdc4 recognition act as dominant negative mutants to block cell spreading or cell migration that depends on HER2 or EGFR, respectively. The interaction of the α6β4 integrin with the syndecans appears critical for it to be utilized as a signaling platform; migration depends on α3β1 integrin binding to laminin 332 (LN332; also known as laminin 5), whereas antibodies that block α6β4 binding are without effect. These findings indicate that specific syndecan family members are likely to have key roles in α6β4 integrin activation by receptor tyrosine kinases.
Collapse
Affiliation(s)
- Haiyao Wang
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Haining Jin
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - DeannaLee M Beauvais
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Alan C Rapraeger
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705; Carbone Cancer Center, Wisconsin Institutes for Medical Research, University of Wisconsin-Madison, Madison, Wisconsin 53705.
| |
Collapse
|
41
|
Chung H, Jung H, Lee JH, Oh HY, Kim OB, Han IO, Oh ES. Keratinocyte-derived laminin-332 protein promotes melanin synthesis via regulation of tyrosine uptake. J Biol Chem 2014; 289:21751-9. [PMID: 24951591 PMCID: PMC4118133 DOI: 10.1074/jbc.m113.541177] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 06/09/2014] [Indexed: 11/06/2022] Open
Abstract
Melanocytes, which produce the pigment melanin, are known to be closely regulated by neighboring keratinocytes. However, how keratinocytes regulate melanin production is unclear. Here we report that melanin production in melanoma cells (B16F10 and MNT-1) was increased markedly on a keratinocyte-derived extracellular matrix compared with a melanoma cell-derived extracellular matrix. siRNA-mediated reduction of keratinocyte-derived laminin-332 expression decreased melanin synthesis in melanoma cells, and laminin-332, but not fibronectin, enhanced melanin content and α-melanocyte-stimulating hormone-regulated melanin production in melanoma cells. Similar effects were observed in human melanocytes. Interestingly, however, laminin-332 did not affect the expression or activity of tyrosinase. Instead, laminin-332 promoted the uptake of extracellular tyrosine and, subsequently, increased intracellular levels of tyrosine in both melanocytes and melanoma cells. Taken together, these data strongly suggest that keratinocyte-derived laminin-332 contributes to melanin production by regulating tyrosine uptake.
Collapse
Affiliation(s)
- Heesung Chung
- From the Department of Life Sciences, Research Center for Cellular Homeostasis and
| | - Hyejung Jung
- From the Department of Life Sciences, Research Center for Cellular Homeostasis and
| | - Jung-Hyun Lee
- From the Department of Life Sciences, Research Center for Cellular Homeostasis and
| | - Hye Yun Oh
- Department of Life Sciences, Interdisciplinary Program of EcoCreative, Ewha Womans University, Seoul 120-750, Korea and
| | - Ok Bin Kim
- Department of Life Sciences, Interdisciplinary Program of EcoCreative, Ewha Womans University, Seoul 120-750, Korea and
| | - Inn-Oc Han
- the College of Medicine, Department of Physiology and Biophysics, Inha University, Incheon 402-751, Korea
| | - Eok-Soo Oh
- From the Department of Life Sciences, Research Center for Cellular Homeostasis and
| |
Collapse
|
42
|
Löffek S, Hurskainen T, Jackow J, Sigloch FC, Schilling O, Tasanen K, Bruckner-Tuderman L, Franzke CW. Transmembrane collagen XVII modulates integrin dependent keratinocyte migration via PI3K/Rac1 signaling. PLoS One 2014; 9:e87263. [PMID: 24505282 PMCID: PMC3914815 DOI: 10.1371/journal.pone.0087263] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 12/25/2013] [Indexed: 12/28/2022] Open
Abstract
The hemidesmosomal transmembrane component collagen XVII (ColXVII) plays an important role in the anchorage of the epidermis to the underlying basement membrane. However, this adhesion protein seems to be also involved in the regulation of keratinocyte migration, since its expression in these cells is strongly elevated during reepithelialization of acute wounds and in the invasive front of squamous cell carcinoma, while its absence in ColXVII-deficient keratinocytes leads to altered cell motility. Using a genetic model of murine Col17a1⁻/⁻ keratinocytes we elucidated ColXVII mediated signaling pathways in cell adhesion and migration. Col17a1⁻/⁻ keratinocytes exhibited increased spreading on laminin 332 and accelerated, but less directed cell motility. These effects were accompanied by increased expression of the integrin subunits β4 and β1. The migratory phenotype, as evidenced by formation of multiple unstable lamellipodia, was associated with enhanced phosphoinositide 3-kinase (PI3K) activity. Dissection of the signaling pathway uncovered enhanced phosphorylation of the β4 integrin subunit and the focal adhesion kinase (FAK) as activators of PI3K. This resulted in elevated Rac1 activity as a downstream consequence. These results provide mechanistic evidence that ColXVII coordinates keratinocyte adhesion and directed motility by interfering integrin dependent PI3K activation and by stabilizing lamellipodia at the leading edge of reepithelializing wounds and in invasive squamous cell carcinoma.
Collapse
Affiliation(s)
- Stefanie Löffek
- Department of Dermatology and Venerology, University Medical Center Freiburg, Freiburg, Germany
| | - Tiina Hurskainen
- Department of Dermatology, Oulu Center for Cell-Matrix Research, University of Oulu, and Clinical Research Center, Oulu University Hospital, Oulu, Finland
| | - Joanna Jackow
- Department of Dermatology and Venerology, University Medical Center Freiburg, Freiburg, Germany
| | - Florian Christoph Sigloch
- Institute of Molecular Medicine and Cell Research, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Oliver Schilling
- Institute of Molecular Medicine and Cell Research, University of Freiburg, Freiburg, Germany
- Bioss Centre for Biological Studies, University of Freiburg, Freiburg, Germany
| | - Kaisa Tasanen
- Department of Dermatology, Oulu Center for Cell-Matrix Research, University of Oulu, and Clinical Research Center, Oulu University Hospital, Oulu, Finland
| | - Leena Bruckner-Tuderman
- Department of Dermatology and Venerology, University Medical Center Freiburg, Freiburg, Germany
- Freiburg Institute of Advanced Studies, School of Life Sciences – LifeNet, University of Freiburg, Freiburg, Germany
| | - Claus-Werner Franzke
- Department of Dermatology and Venerology, University Medical Center Freiburg, Freiburg, Germany
| |
Collapse
|
43
|
Abstract
An abundance of evidence shows supporting roles for tetraspanin proteins in human cancer. Many studies show that the expression of tetraspanins correlates with tumour stage, tumour type and patient outcome. In addition, perturbations of tetraspanins in tumour cell lines can considerably affect cell growth, morphology, invasion, tumour engraftment and metastasis. This Review emphasizes new studies that have used de novo mouse cancer models to show that select tetraspanin proteins have key roles in tumour initiation, promotion and metastasis. This Review also emphasizes how tetraspanin proteins can sometimes participate in tumour angiogenesis. These recent data build an increasingly strong case for tetraspanins as therapeutic targets.
Collapse
|
44
|
Chung BM, Rotty JD, Coulombe PA. Networking galore: intermediate filaments and cell migration. Curr Opin Cell Biol 2013; 25:600-12. [PMID: 23886476 PMCID: PMC3780586 DOI: 10.1016/j.ceb.2013.06.008] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 06/19/2013] [Accepted: 06/24/2013] [Indexed: 11/22/2022]
Abstract
Intermediate filaments (IFs) are assembled from a diverse group of evolutionarily conserved proteins and are specified in a tissue-dependent, cell type-dependent, and context-dependent fashion in the body. IFs are involved in multiple cellular processes that are crucial for the maintenance of cell and tissue integrity and the response and adaptation to various stresses, as conveyed by the broad array of crippling clinical disorders caused by inherited mutations in IF coding sequences. Accordingly, the expression, assembly, and organization of IFs are tightly regulated. Migration is a fitting example of a cell-based phenomenon in which IFs participate as both effectors and regulators. With a particular focus on vimentin and keratin, we here review how the contributions of IFs to the cell's mechanical properties, to cytoarchitecture and adhesion, and to regulatory pathways collectively exert a significant impact on cell migration.
Collapse
Affiliation(s)
- Byung-Min Chung
- Dept. of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Jeremy D. Rotty
- Dept. of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Pierre A. Coulombe
- Dept. of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
- Department of Biological Chemistry, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
- Department of Dermatology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| |
Collapse
|
45
|
Thuma F, Ngora H, Zöller M. The metastasis-associated molecule C4.4A promotes tissue invasion and anchorage independence by associating with the alpha6beta4 integrin. Mol Oncol 2013; 7:917-28. [PMID: 23727360 PMCID: PMC5528461 DOI: 10.1016/j.molonc.2013.05.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 05/01/2013] [Accepted: 05/02/2013] [Indexed: 01/13/2023] Open
Abstract
C4.4A is a metastasis-associated molecule that functions appear to rely on associated alph6beta4 integrin. To corroborate the impact of the C4.4A-alpha6beta4 integrin association on metastasis formation, C4.4A was knocked-down in a highly metastatic rat pancreatic adenocarcinoma (ASML, ASML-C4.4Akd). Metastasis formation by ASML-C4.4Akd cells after intrafootpad application was strongly retarded in draining nodes and lung colonization was rare. Furthermore, cisplatin treatment significantly prolonged the survival time only of ASML-C4.4Akd-bearing rats. ASML-C4.4Akd cells display reduced migratory activity and impaired matrix protein degradation due to inefficient MMP14 activation; loss of drug-resistance is due to mitigated PI3K/Akt pathway activation. These losses of function rely on the laminin receptor C4.4A recruiting activated alpha6beta4 integrin into rafts, where C4.4A cooperates with alpha6beta4 and via alpha6beta4 with MMP14. Within this raft-located complex, MMP14 provokes focalized matrix degradation and mostly alpha6beta4 integrin promotes BAD phosphorylation and upregulated Bcl2 and BclXl expression. Thus, metastasis-promoting activities of C4.4A are not genuine characteristics of C4.4A. Instead, the raft-located laminin receptor C4.4A recruits alpha6beta4 integrin and supports via the alpha6beta4 integrin MMP14 activation. Thereby C4.4A acts as a linker to facilitate several steps in the metastatic cascade. Taking the restricted C4.4A expression in non-transformed tissue, this knowledge should pave the way toward the use of C4.4A as a therapeutic target.
Collapse
Affiliation(s)
- Florian Thuma
- Department of Tumor Cell Biology, University Hospital of Surgery, Heidelberg D-69120, Germany
| | - Honoré Ngora
- Department of Tumor Cell Biology, University Hospital of Surgery, Heidelberg D-69120, Germany
| | - Margot Zöller
- Department of Tumor Cell Biology, University Hospital of Surgery, Heidelberg D-69120, Germany
- German Cancer Research Center, Heidelberg, Germany
| |
Collapse
|
46
|
Lara R, Seckl MJ, Pardo OE. The p90 RSK family members: common functions and isoform specificity. Cancer Res 2013; 73:5301-8. [PMID: 23970478 DOI: 10.1158/0008-5472.can-12-4448] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The p90 ribosomal S6 kinases (RSK) are implicated in various cellular processes, including cell proliferation, survival, migration, and invasion. In cancer, RSKs modulate cell transformation, tumorigenesis, and metastasis. Indeed, changes in the expression of RSK isoforms have been reported in several malignancies, including breast, prostate, and lung cancers. Four RSK isoforms have been identified in humans on the basis of their high degree of sequence homology. Although this similarity suggests some functional redundancy between these proteins, an increasing body of evidence supports the existence of isoform-based specificity among RSKs in mediating particular cellular processes. This review briefly presents the similarities between RSK family members before focusing on the specific function of each of the isoforms and their involvement in cancer progression.
Collapse
Affiliation(s)
- Romain Lara
- Division of Oncology, Oncology Imperial College London, London, United Kingdom
| | | | | |
Collapse
|
47
|
Bouameur JE, Schneider Y, Begré N, Hobbs RP, Lingasamy P, Fontao L, Green KJ, Favre B, Borradori L. Phosphorylation of serine 4,642 in the C-terminus of plectin by MNK2 and PKA modulates its interaction with intermediate filaments. J Cell Sci 2013; 126:4195-207. [PMID: 23843618 DOI: 10.1242/jcs.127779] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Plectin is a versatile cytolinker of the plakin family conferring cell resilience to mechanical stress in stratified epithelia and muscles. It acts as a critical organizer of the cytoskeletal system by tethering various intermediate filament (IF) networks through its C-terminal IF-binding domain (IFBD). Mutations affecting the IFBD cause devastating human diseases. Here, we show that serine 4642, which is located in the extreme C-terminus of plectin, is phosphorylated in different cell lines. Phosphorylation of S4642 decreased the ability of plectin IFBD to associate with various IFs, as assessed by immunofluorescence microscopy and cell fractionation studies, as well as in yeast two-hybrid assays. Plectin phosphorylated at S4642 was reduced at sites of IF network anchorage along cell-substrate contacts in both skin and cultured keratinocytes. Treatment of SK-MEL-2 and HeLa cells with okadaic acid increased plectin S4642 phosphorylation, suggesting that protein phosphatase 2A dephosphorylates this residue. Moreover, plectin S4642 phosphorylation was enhanced after cell treatment with EGF, phorbol ester, sorbitol and 8-bromo-cyclic AMP, as well as during wound healing and protease-mediated cell detachment. Using selective protein kinase inhibitors, we identified two different kinases that modulate the phosphorylation of plectin S4642 in HeLa cells: MNK2, which is downstream of the ERK1/2-dependent MAPK cascade, and PKA. Our study indicates that phosphorylation of S4642 has an important regulatory role in the interaction of plectin with IFs and identifies a novel link between MNK2 and the cytoskeleton.
Collapse
Affiliation(s)
- Jamal-Eddine Bouameur
- Department of Clinical Research-Dermatology, Inselspital Bern University Hospital and University of Bern, 3010 Bern, Switzerland
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Reduced susceptibility to two-stage skin carcinogenesis in mice with epidermis-specific deletion of CD151. J Invest Dermatol 2013; 134:221-228. [PMID: 23792458 PMCID: PMC4570276 DOI: 10.1038/jid.2013.280] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 05/01/2013] [Accepted: 05/23/2013] [Indexed: 12/14/2022]
Abstract
Altered expression of the tetraspanin CD151 is associated with skin tumorigenesis; however, whether CD151 is causally involved in the tumorigenic process is not known. To evaluate its role in tumor formation, we subjected epidermis-specific Cd151 knockout mice to chemical skin carcinogenesis. Mice lacking epidermal Cd151 developed fewer and smaller tumors than wild-type mice following DMBA/TPA treatment. Furthermore, Cd151-null epidermis showed a reduced hyperproliferative response to short-term treatment with TPA compared to that of wild-type skin, while epidermal turnover was increased. Tumors were formed in equal numbers following DMBA only treatment. We suggest that DMBA-initiated keratinocytes lacking Cd151 leave their niches in the epidermis and hair follicles in response to TPA treatment and subsequently are lost by differentiation. Because genetic ablation of Itga3 also reduced skin tumor formation, we tested whether reduced expression of α3 could further suppress tumor formation in epidermis-specific Cd151 knockout mice. Although the response to DMBA/TPA-induced formation of skin tumors was similar in compound heterozygotes for Cd151 and Itga3 to that in wild-type mice, heterozygosity for Itga3 on a Cd151-null background diminished tumorigenesis suggesting genetic interaction between the two genes. We thus identify CD151 as a critical factor in TPA-dependent skin carcinogenesis.
Collapse
|
49
|
Li Q, Yang XH, Xu F, Sharma C, Wang HX, Knoblich K, Rabinovitz I, Granter SR, Hemler ME. Tetraspanin CD151 plays a key role in skin squamous cell carcinoma. Oncogene 2013; 32:1772-83. [PMID: 22824799 PMCID: PMC3482293 DOI: 10.1038/onc.2012.205] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Revised: 03/30/2012] [Accepted: 04/23/2012] [Indexed: 11/23/2022]
Abstract
Here we provide the first evidence that tetraspanin CD151 can support de novo carcinogenesis. During two-stage mouse skin chemical carcinogenesis, CD151 reduces tumor lag time and increases incidence, multiplicity, size and progression to malignant squamous cell carcinoma (SCC), while supporting both cell survival during tumor initiation and cell proliferation during the promotion phase. In human skin SCC, CD151 expression is selectively elevated compared with other skin cancer types. CD151 support of keratinocyte survival and proliferation may depend on activation of transcription factor STAT3 (signal transducers and activators of transcription), a regulator of cell proliferation and apoptosis. CD151 also supports protein kinase C (PKC)α-α6β4 integrin association and PKC-dependent β4 S1424 phosphorylation, while regulating α6β4 distribution. CD151-PKCα effects on integrin β4 phosphorylation and subcellular localization are consistent with epithelial disruption to a less polarized, more invasive state. CD151 ablation, while minimally affecting normal cell and normal mouse functions, markedly sensitized mouse skin and epidermoid cells to chemicals/drugs including 7,12-dimethylbenz[α]anthracene (mutagen) and camptothecin (topoisomerase inhibitor), as well as to agents targeting epidermal growth factor receptor, PKC, Jak2/Tyk2 and STAT3. Hence, CD151 'co-targeting' may be therapeutically beneficial. These findings not only support CD151 as a potential tumor target, but also should apply to other cancers utilizing CD151/laminin-binding integrin complexes.
Collapse
Affiliation(s)
- Qinglin Li
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute and Harvard Medical School, Boston MA
| | - Xiuwei H. Yang
- Department of Molecular and Biomedical Pharmacology, University of Kentucky, Lexington, KY
| | - Fenghui Xu
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute and Harvard Medical School, Boston MA
| | - Chandan Sharma
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute and Harvard Medical School, Boston MA
| | - Hong-Xing Wang
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute and Harvard Medical School, Boston MA
| | - Konstantin Knoblich
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute and Harvard Medical School, Boston MA
| | - Isaac Rabinovitz
- Division of Cancer Biology and Angiogenesis, Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston MA
| | - Scott R. Granter
- Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston MA
| | - Martin E. Hemler
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute and Harvard Medical School, Boston MA
| |
Collapse
|
50
|
Integrin-associated CD151 drives ErbB2-evoked mammary tumor onset and metastasis. Neoplasia 2013; 14:678-89. [PMID: 22952421 DOI: 10.1593/neo.12922] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 07/01/2012] [Accepted: 07/04/2012] [Indexed: 12/14/2022] Open
Abstract
ErbB2+ human breast cancer is a major clinical problem. Prior results have suggested that tetraspanin CD151 might contribute to ErbB2-driven breast cancer growth, survival, and metastasis. In other cancer types, CD151 sometimes supports tumor growth and metastasis. However, a definitive test of CD151 effects on de novo breast cancer initiation, growth, and metastasis has not previously been done. We used CD151 gene-deleted mice expressing the MMTV-ErbB2 transgene to show that CD151 strongly supports ErbB2+ mammary tumor initiation and metastasis. Delayed tumor onset (by 70-100 days) in the absence of CD151 was accompanied by reduced survival of mammary epithelial cells and impaired activation of FAK- and MAPK-dependent pathways. Both primary tumors and metastatic nodules showed smooth, regular borders, consistent with a less invasive phenotype. Furthermore, consistent with impaired oncogenesis and decreased metastasis, CD151-targeted MCF-10A/ErbB2 cells showed substantial decreases in three-dimensional colony formation, EGF-stimulated tumor cell motility, invasion, and transendothelial migration. These CD151-dependent functions were largely mediated through α6β4 integrin. Moreover, CD151 ablation substantially prevented PKC- and EGFR/ERK-dependent α6β4 integrin phosphorylation, consistent with retention of epithelial cell polarity and intermediate filament cytoskeletal connections, which helps to explain diminished metastasis. Finally, clinical data analyses revealed a strong correlation between CD151 and ErbB2 expression and metastasis-free survival of breast cancer patients. In conclusion, we provide strong evidence that CD151 collaborates with LB integrins (particularly α6β4 and ErbB2 (and EGFR) receptors to regulate multiple signaling pathways, thereby driving mammary tumor onset, survival, and metastasis. Consequently, CD151 is a useful therapeutic target in malignant ErbB2+ breast cancer.
Collapse
|