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Ramovs V, Krotenberg Garcia A, Kreft M, Sonnenberg A. Integrin α3β1 Is a Key Regulator of Several Protumorigenic Pathways during Skin Carcinogenesis. J Invest Dermatol 2021; 141:732-741.e6. [PMID: 32805217 DOI: 10.1016/j.jid.2020.07.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 07/14/2020] [Accepted: 07/14/2020] [Indexed: 12/19/2022]
Abstract
Integrin α3β1 plays a crucial role in tumor formation in the two-stage chemical carcinogenesis model (DMBA and TPA treatment). However, the mechanisms whereby the expression of α3β1 influences key oncogenic drivers of this established model are not known yet. Using an in vivo mouse model with epidermal deletion of α3β1 and in vitro Matrigel cultures of transformed keratinocytes, we demonstrate the central role of α3β1 in promoting the activation of several protumorigenic signaling pathways during the initiation of DMBA/TPA‒driven tumorigenesis. In transformed keratinocytes, α3β1-mediated focal adhesion kinase/Src activation leads to in vitro growth of spheroids and to strong Akt and STAT 3 activation when the α3β1-binding partner tetraspanin CD151 is present to stabilize cell‒cell adhesion and promote Smad2 phosphorylation. Remarkably, α3β1 and CD151 can support Akt and STAT 3 activity independently of α3β1 ligation by laminin-332 and as such control the essential survival signals required for suprabasal keratin-10 expression during keratinocyte differentiation. These data demonstrate that α3β1 together with CD151 regulate the signaling pathways that control the survival of differentiating keratinocytes and provide a mechanistic understanding of the essential role of α3β1 in early stages of skin cancer development.
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Affiliation(s)
- Veronika Ramovs
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Ana Krotenberg Garcia
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Maaike Kreft
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Arnoud Sonnenberg
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
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Emerging Laminin-332‒Dependent and ‒Independent Roles for Integrin α3 in Protumorigenic Signaling. J Invest Dermatol 2021; 141:713-716. [PMID: 33752808 DOI: 10.1016/j.jid.2020.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 11/21/2022]
Abstract
The epidermal integrin α3β1 promotes skin tumorigenesis in experimental models; yet, the underlying molecular mechanisms remain mostly unclear. In their article, Ramovs et al. (2020a) identify two spatially separated α3β1-dependent signaling branches fostering skin tumor outgrowth. In basal keratinocytes, α3β1/laminin (LN)-332 drives FAK/Src activation, whereas in suprabasal layers, junctional α3β1 and the tetraspanin CD151 mediate signal transducer and protein kinase B (Akt)‒dependent survival that is independent of LN-332 binding.
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Samson GPB, Legler DF. Membrane Compartmentalization and Scaffold Proteins in Leukocyte Migration. Front Cell Dev Biol 2020; 8:285. [PMID: 32411706 PMCID: PMC7198906 DOI: 10.3389/fcell.2020.00285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/02/2020] [Indexed: 01/14/2023] Open
Abstract
Leukocyte migration across vessels into and within peripheral and lymphoid tissues is essential for host defense against invading pathogens. Leukocytes are specialized in sensing a variety of guidance cues and to integrate environmental stimuli to navigate in a timely and spatially controlled manner. These extracellular signals must be transmitted across the leukocyte’s plasma membrane in a way that intracellular signaling cascades enable directional cell movement. Therefore, the composition of the membrane in concert with proteins that influence the compartmentalization of the plasma membrane or contribute to delineate intracellular signaling molecules are key in controlling leukocyte navigation. This becomes evident by the fact that mislocalization of membrane proteins is known to deleteriously affect cellular functions that may cause diseases. In this review we summarize recent advances made in the understanding of how membrane cholesterol levels modulate chemokine receptor signaling and hence leukocyte trafficking. Moreover, we provide an overview on the role of membrane scaffold proteins, particularly tetraspanins, flotillins/reggies, and caveolins in controlling leukocyte migration both in vitro and in vivo.
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Affiliation(s)
- Guerric P B Samson
- Biotechnology Institute Thurgau at the University of Konstanz, Kreuzlingen, Switzerland
| | - Daniel F Legler
- Biotechnology Institute Thurgau at the University of Konstanz, Kreuzlingen, Switzerland.,Faculty of Biology, University of Konstanz, Konstanz, Germany.,Theodor Kocher Institute, University of Bern, Bern, Switzerland
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Zhao K, Wang Z, Hackert T, Pitzer C, Zöller M. Tspan8 and Tspan8/CD151 knockout mice unravel the contribution of tumor and host exosomes to tumor progression. J Exp Clin Cancer Res 2018; 37:312. [PMID: 30541597 PMCID: PMC6292129 DOI: 10.1186/s13046-018-0961-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/14/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The tetraspanins Tspan8 and CD151 promote metastasis, exosomes (Exo) being suggested to be important in the crosstalk between tumor and host. The contribution of Tspan8 and CD151 to host versus tumor-derived exosome (TEX) activities being not defined, we approached the questions using 3-methylcholanthrene-induced (MCA) tumors from wt, Tspan8ko, CD151ko and Tspan8/CD151 (db)ko mice, implanted into tetraspanin-competent and deficient hosts. METHODS Tumor growth and dissemination, hematopoiesis and angiogenesis were surveyed in wild type (wt), Tspan8ko, CD151ko and dbko mice bearing tetraspanin-competent and -deficient MCA tumors. In vitro studies using tumor cells, bone marrow cells (BMC) and endothelial cells (EC) elaborated the mechanism of serum (s)Exo- and TEX-induced target modulation. RESULTS Tumors grew in autochthonous and syngeneic hosts differing in Tspan8- and/or CD151-competence. However, Tspan8ko- and/or CD151ko-tumor cell dissemination and settlement in metastatic organs was significantly reduced in the autochthonous host, and less severely in the wt-host. Impaired wt-MCA tumor dissemination in the ko-host confirmed a contribution of host- and tumor-Tspan8/-CD151 to tumor cell dissemination, delivery of sExo and TEX being severely impaired by a Tspan8ko/CD151ko. Coculturing tumor cells, BMC and EC with sExo and TEX revealed minor defects in epithelial mesenchymal transition and apoptosis resistance of ko tumors. Strongly reduced migratory and invasive capacity of Tspan8ko/CD151ko-MCA relies on distorted associations with integrins and CAM and missing Tspan8/CD151-promoted recruitment of proteases. The defects, differing between Tspan8ko- and CD151ko-MCA, were rescued by wt-TEX and, less efficiently Tspan8ko- and CD151ko-TEX. Minor defects in hematopoietic progenitor maturation were based on the missing association of hematopoietic growth factors /- receptors with CD151 and, less pronounced, Tspan8. Rescue of impaired angiogenesis in ko mice by wt-sExo and promotion of angiogenesis by TEX depended on the association of Tspan8 and CD151 with GPCR and RTK in EC and tumor cells. CONCLUSIONS Tspan8-/CD151-TEX play central roles in tumor progression. Tspan8-/CD151-sExo and TEX contribute by stimulating angiogenesis. Tspan8 and CD151 fulfill these tasks by associating with function-relevant proteins, the additive impact of Tspan8 and CD151 relying on differences in preferred associations. The distinct Tspan8 and CD151 contributions suggest a blockade of TEX-Tspan8 and -CD151 promising for therapeutic intervention.
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Affiliation(s)
- Kun Zhao
- Pancreas Section, University Hospital of Surgery, Ruprecht-Karls-University, Heidelberg, Germany
| | - Zhe Wang
- Pancreas Section, University Hospital of Surgery, Ruprecht-Karls-University, Heidelberg, Germany
- Present Address: Department of Oncology, First Affiliated Hospital of Guangdong Pharmaceutical University, Guangdong, China
| | - Thilo Hackert
- Pancreas Section, University Hospital of Surgery, Ruprecht-Karls-University, Heidelberg, Germany
| | - Claudia Pitzer
- Interdisciplinary Neurobehavioral Core, Institute of Pharmacology, Ruprecht-Karls-University, Heidelberg, Germany
| | - Margot Zöller
- Pancreas Section, University Hospital of Surgery, Ruprecht-Karls-University, Heidelberg, Germany
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Vences-Catalán F, Levy S. Immune Targeting of Tetraspanins Involved in Cell Invasion and Metastasis. Front Immunol 2018; 9:1277. [PMID: 29946318 PMCID: PMC6006414 DOI: 10.3389/fimmu.2018.01277] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/22/2018] [Indexed: 01/15/2023] Open
Abstract
Metastasis is the ultimate consequence of cancer progression and the cause of patients’ death across different cancer types. Patients with initial diagnosis of distant disease have a worst 5-year survival compared to patients with localized disease. Therapies that target primary tumors fail to eradicate distant dissemination of cancer. Recently, immunotherapies have improved the survival of patients with metastatic disease, such as melanoma and lung cancer. However, only a fraction of patients responds to immunotherapy modalities that target the host immune system. The need to identify new druggable targets that inhibit or prevent metastasis is, therefore, much needed. Tetraspanins have emerged as key players in regulating cell migration, invasion, and metastasis. By serving as molecular adaptors that cluster adhesion receptors, signaling molecules, and cell surface receptors; tetraspanins are involved in all steps of the metastatic cascade. They regulate cell proliferation, participate in EMT transition, modulate integrin-mediated cell adhesion, and participate in angiogenesis and invasion processes. Tetraspanins have also been shown to modulate metastasis indirectly through exosomes and by regulating cellular interactions in the immune system. Importantly, targeting individual tetraspanin with antibodies has impacted tumor progression. This review will focus on the contribution of tetraspanins to the metastatic process and their potential as therapeutic tumor targets.
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Affiliation(s)
- Felipe Vences-Catalán
- Division of Oncology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Shoshana Levy
- Division of Oncology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
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Zhao K, Erb U, Hackert T, Zöller M, Yue S. Distorted leukocyte migration, angiogenesis, wound repair and metastasis in Tspan8 and Tspan8/CD151 double knockout mice indicate complementary activities of Tspan8 and CD51. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:379-391. [DOI: 10.1016/j.bbamcr.2017.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/21/2017] [Accepted: 11/10/2017] [Indexed: 02/07/2023]
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Joint features and complementarities of Tspan8 and CD151 revealed in knockdown and knockout models. Biochem Soc Trans 2017; 45:437-447. [PMID: 28408484 DOI: 10.1042/bst20160298] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/04/2017] [Accepted: 02/13/2017] [Indexed: 02/06/2023]
Abstract
Tetraspanins are highly conserved 4-transmembrane proteins which form molecular clusters with a large variety of transmembrane and cytosolic proteins. By these associations tetraspanins are engaged in a multitude of biological processes. Furthermore, tetraspanin complexes are located in specialized microdomains, called tetraspanin-enriched microdomains (TEMs). TEMs provide a signaling platform and are poised for invagination and vesicle formation. These vesicles can be released as exosomes (Exo) and are important in cell contact-independent intercellular communication. Here, we summarize emphasizing knockdown and knockout models' pathophysiological joint and selective activities of CD151 and Tspan8, and discuss the TEM-related engagement of CD151 and Tspan8 in Exo activities.
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Ke AW, Zhang PF, Shen YH, Gao PT, Dong ZR, Zhang C, Cai JB, Huang XY, Wu C, Zhang L, Kang Q, Liu LX, Xie N, Shen ZZ, Hu MY, Cao Y, Qiu SJ, Sun HC, Zhou J, Fan J, Shi GM. Generation and characterization of a tetraspanin CD151/integrin α6β1-binding domain competitively binding monoclonal antibody for inhibition of tumor progression in HCC. Oncotarget 2017; 7:6314-22. [PMID: 26756217 PMCID: PMC4868758 DOI: 10.18632/oncotarget.6833] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 12/29/2015] [Indexed: 01/17/2023] Open
Abstract
Our previous studies revealed that tetraspanin CD151 plays multiple roles in the progression of hepatocellular carcinoma (HCC) by forming a functional complex with integrin α6β1. Herein, we generated a monoclonal antibody (mAb) that dissociates the CD151/integrin α6β1 complex, and we evaluated its bioactivity in HCCs. A murine mAb, tetraspanin CD151 (IgG1, called CD151 mAb 9B), was successfully generated against the CD151-integrin α6β1 binding site of CD151 extracellular domains. Co-immunoprecipitation using CD151 mAb 9B followed by Western blotting detected a 28 kDa protein. Both immunofluorescent and immunohistochemical staining showed a good reactivity of CD151 mAb 9B in the plasma membrane and cytoplasm of HCC cells, as well as in liver cells. In vitro assays demonstrated that CD151 mAb 9B could inhibit neoangiogenesis and both the mobility and the invasiveness of HCC cells. An in vivo assay showed that CD151 mAb 9B inhibited tumor growth potential and HCC cells metastasis. We successfully produced a CD151 mAb 9B targeting the CD151/integrin α6β1-binding domain, which not only can displayed good reactivity to the CD151 antigen but also prevented tumor progression in HCC.
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Affiliation(s)
- Ai-Wu Ke
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Peng-Fei Zhang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Ying-Hao Shen
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Ping-Ting Gao
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Zhao-Ru Dong
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Chi Zhang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Jia-Bin Cai
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Xiao-Yong Huang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Chao Wu
- Department of Hepatobiliary Surgery, Subei People's Hospital, Yangzhou University, Yangzhou 225000, China
| | - Lu Zhang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Qiang Kang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
| | - Li-Xin Liu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
| | - Nan Xie
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
| | - Zao-Zhuo Shen
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Mei-Yu Hu
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Ya Cao
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Hunan 410008, China
| | - Shuang-Jian Qiu
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Hui-Chuan Sun
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Jian Zhou
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Jia Fan
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
| | - Guo-Ming Shi
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
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Masse I, Agaësse G, Berthier-Vergnes O. [Tetraspanins in cutaneous physiopathology]. Med Sci (Paris) 2016; 32:267-73. [PMID: 27011245 DOI: 10.1051/medsci/20163203011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Tetraspanins are transmembrane proteins that interact laterally with each other and with different partners such as integrins, immunoglobulin (Ig)-domain-containing proteins, growth factors and cytokine receptors. Such tetraspanin-partner complexes help to organize dynamic membrane networks called "tetraspanin web", which trigger different signalling pathways. Despite the fact that tetraspanins seem abundantly and widely expressed, their function remained unclear. However, it is well established that they control fundamental cellular processes including cell survival, adhesion, migration, invasion or viral infection, but the underlying molecular mechanisms are not well elucidated. This review focuses on tetraspanins that are expressed in epidermis and the roles they play in normal and pathological conditions, specifically in skin cancer.
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Affiliation(s)
- Ingrid Masse
- Université de Lyon 1, F-69003 Lyon, France - CNRS, UMR5534, centre de génétique et de physiologie moléculaires et cellulaires, 16, rue Raphaël Dubois, Villeurbanne, F-69622, France
| | - Gweltaz Agaësse
- Université de Lyon 1, F-69003 Lyon, France - CNRS, UMR5534, centre de génétique et de physiologie moléculaires et cellulaires, 16, rue Raphaël Dubois, Villeurbanne, F-69622, France
| | - Odile Berthier-Vergnes
- Université de Lyon 1, F-69003 Lyon, France - CNRS, UMR5534, centre de génétique et de physiologie moléculaires et cellulaires, 16, rue Raphaël Dubois, Villeurbanne, F-69622, France
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Zhang Z, Wang F, Ding J, Zhang H, Zhu J, Sun Z, Zhang Y. Cationic dendron-bearing lipid/CD151 siRNA complex inhibits osteosarcoma metastasis by down-regulating matrix metalloproteinase-9. RSC Adv 2016. [DOI: 10.1039/c6ra08376e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cationic dendron-bearing lipid safely and effectively delivers CD151 siRNA complex for inhibition of osteosarcoma metastasis by down-regulating matrix metalloproteinase-9.
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Affiliation(s)
- Zhiyu Zhang
- Department of Orthopedics
- The Fourth Affiliated Hospital of China Medical University
- Shenyang 110032
- People's Republic of China
| | - Feng Wang
- Department of Orthopedics
- The Fourth Affiliated Hospital of China Medical University
- Shenyang 110032
- People's Republic of China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- People's Republic of China
| | - Haifei Zhang
- Department of Orthopedics
- The Fourth Affiliated Hospital of China Medical University
- Shenyang 110032
- People's Republic of China
| | - Jiajun Zhu
- Department of Orthopedics
- The Fourth Affiliated Hospital of China Medical University
- Shenyang 110032
- People's Republic of China
| | - Zhenguo Sun
- Department of Orthopedics
- The Fourth Affiliated Hospital of China Medical University
- Shenyang 110032
- People's Republic of China
| | - Yu Zhang
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- People's Republic of China
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11
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Singh P, Arya M, Kanoujia J, Singh M, Gupta KP, Saraf SA. Design of topical nanostructured lipid carrier of silymarin and its effect on 7,12-dimethylbenz[a]anthracene (DMBA) induced cellular differentiation in mouse skin. RSC Adv 2016. [DOI: 10.1039/c6ra20231d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effect of silymarin NLC on DMBA induced cell changes in mouse skin.
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Affiliation(s)
- Pooja Singh
- Department of Pharmaceutical Sciences
- Babasaheb Bhimrao Ambedkar University
- Lucknow 226025
- India
| | - Malti Arya
- Department of Pharmaceutical Sciences
- Babasaheb Bhimrao Ambedkar University
- Lucknow 226025
- India
| | - Jovita Kanoujia
- Department of Pharmaceutical Sciences
- Babasaheb Bhimrao Ambedkar University
- Lucknow 226025
- India
| | - Mahendra Singh
- Department of Pharmaceutical Sciences
- Babasaheb Bhimrao Ambedkar University
- Lucknow 226025
- India
| | - Krishna P. Gupta
- Environmental Carcinogenesis Division
- CSIR-Indian Institute of Toxicology Research
- Lucknow 226001
- India
| | - Shubhini A. Saraf
- Department of Pharmaceutical Sciences
- Babasaheb Bhimrao Ambedkar University
- Lucknow 226025
- India
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Abstract
Tetraspanins are a family of proteins with four transmembrane domains that play a role in many aspects of cell biology and physiology; they are also used by several pathogens for infection and regulate cancer progression. Many tetraspanins associate specifically and directly with a limited number of proteins, and also with other tetraspanins, thereby generating a hierarchical network of interactions. Through these interactions, tetraspanins are believed to have a role in cell and membrane compartmentalization. In this Cell Science at a Glance article and the accompanying poster, we describe the basic principles underlying tetraspanin-based assemblies and highlight examples of how tetraspanins regulate the trafficking and function of their partner proteins that are required for the normal development and function of several organs, including, in humans, the eye, the kidney and the immune system.
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Affiliation(s)
- Stéphanie Charrin
- Inserm, U1004, F-94807, Villejuif, France Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif, France
| | - Stéphanie Jouannet
- Inserm, U1004, F-94807, Villejuif, France Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif, France
| | - Claude Boucheix
- Inserm, U1004, F-94807, Villejuif, France Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif, France
| | - Eric Rubinstein
- Inserm, U1004, F-94807, Villejuif, France Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif, France
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Tseng SH, Yang CC, Yu EH, Chang C, Lee YS, Liu CJ, Chang KW, Lin SC. K14-EGFP-miR-31 transgenic mice have high susceptibility to chemical-induced squamous cell tumorigenesis that is associating with Ku80 repression. Int J Cancer 2014; 136:1263-75. [PMID: 25082302 DOI: 10.1002/ijc.29106] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 07/24/2014] [Indexed: 12/18/2022]
Abstract
Squamous cell carcinoma (SCC) occurring in the head and neck region and the esophagus causes tremendous cancer mortality around the world. miR-31 is among the most eminently upregulated MicroRNAs in SCC, when it occurs in the head and neck region and the esophagus. We established miR-31 transgenic mouse lines, in which miR-31 is under the control of the K14 promoter. 4-nitroquinoline 1-oxide (4NQO) is a mutagen that causes double strand breaks. The transgenic mice exhibited a higher potential for tumor induction than wild-type (Wt) mice of the tongue and esophagus after 4NQO treatment. After 4NQO treatment or irradiation, p-γH2AX expression in squamous epithelium of transgenic mice was increased more than in Wt mice. Exogenous expression of miR-31 was also found to be associated with the higher p-γH2AX expression induced by 4NQO in human oral SCC (OSCC) cell lines. The repair genes PARP1 and Ku80 were validated as new targets of miR-31 in human OSCC cell lines, and were found to be downregulated in the squamous epithelium of the tongue in transgenic mice. However, only the downregulation of Ku80 was essential for maintaining the high level of p-γH2AX induced by 4NQO in OSCC cells. Inverse expression profiles for miR-31 and Ku80 were noted in human OSCC tissue. Our study identifies the high sensitivity of K14-EGFP-miR-31 transgenic mice to chemical carcinogen-induced squamous cell tumorigenesis and shows that this seems to be associated with the downregulation of Ku80 and an impairment of repair activity in squamous cells, which are mediated by miR-31.
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Affiliation(s)
- Ssu-Hsueh Tseng
- Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
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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.
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