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Thrombin Cleavage of Osteopontin Modulates Its Activities in Human Cells In Vitro and Mouse Experimental Autoimmune Encephalomyelitis In Vivo

Boggio, E.; Dianzani, C.; Gigliotti, C.L.; Soluri, M.F.; Clemente, N.; Cappellano, G.; Toth, E. LU ; Raineri, D.; Ferrara, B. and Comi, C., et al. (2016) In Journal of Immunology Research 2016.
Abstract
Osteopontin is a proinflammatory cytokine and plays a pathogenetic role in multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis (EAE), by recruiting autoreactive T cells into the central nervous system. Osteopontin functions are modulated by thrombin cleavage generating N- and C-terminal fragment, whose individual roles are only partly known. Published data are difficult to compare since they have been obtained with heterogeneous approaches. Interestingly, thrombin cleavage of osteopontin unmasks a cryptic domain of interaction with α 4 β 1 integrin that is the main adhesion molecule involved in lymphocyte transmigration to the brain and is the target for natalizumab, the most potent drug preventing relapses.... (More)
Osteopontin is a proinflammatory cytokine and plays a pathogenetic role in multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis (EAE), by recruiting autoreactive T cells into the central nervous system. Osteopontin functions are modulated by thrombin cleavage generating N- and C-terminal fragment, whose individual roles are only partly known. Published data are difficult to compare since they have been obtained with heterogeneous approaches. Interestingly, thrombin cleavage of osteopontin unmasks a cryptic domain of interaction with α 4 β 1 integrin that is the main adhesion molecule involved in lymphocyte transmigration to the brain and is the target for natalizumab, the most potent drug preventing relapses. We produced recombinant osteopontin and its N- and C-terminal fragments in an eukaryotic system in order to allow their posttranslational modifications. We investigated, in vitro, their effect on human cells and in vivo in EAE. We found that the osteopontin cleavage plays a key role in the function of this cytokine and that the two fragments exert distinct effects both in vitro and in vivo. These findings suggest that drugs targeting each fragment may be used to fine-tune the pathological effects of osteopontin in several diseases. © 2016 Elena Boggio et al. (Less)
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keywords
biological marker, cytokine, osteopontin, peptide fragment, recombinant protein, thrombin, animal, biosynthesis, disease model, drug effects, enzyme activation, experimental autoimmune encephalomyelitis, genetics, human, immunology, metabolism, mononuclear cell, mouse, multiple sclerosis, protein degradation, T lymphocyte subpopulation, Animals, Biomarkers, Cytokines, Disease Models, Animal, Encephalomyelitis, Autoimmune, Experimental, Enzyme Activation, Humans, Leukocytes, Mononuclear, Mice, Multiple Sclerosis, Osteopontin, Peptide Fragments, Proteolysis, Recombinant Proteins, T-Lymphocyte Subsets, Thrombin
in
Journal of Immunology Research
volume
2016
publisher
Hindawi Publishing Corporation
external identifiers
  • scopus:84979790726
ISSN
2314-7156
DOI
10.1155/2016/9345495
language
English
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no
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49a7fd9a-0df1-4ce9-842d-f27c2011468f
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979790726&doi=10.1155%2f2016%2f9345495&partnerID=40&md5=9b565644d7fcb8784f9696007f7b4b37
date added to LUP
2017-04-18 11:25:06
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2017-10-22 05:29:26
@article{49a7fd9a-0df1-4ce9-842d-f27c2011468f,
  abstract     = {Osteopontin is a proinflammatory cytokine and plays a pathogenetic role in multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis (EAE), by recruiting autoreactive T cells into the central nervous system. Osteopontin functions are modulated by thrombin cleavage generating N- and C-terminal fragment, whose individual roles are only partly known. Published data are difficult to compare since they have been obtained with heterogeneous approaches. Interestingly, thrombin cleavage of osteopontin unmasks a cryptic domain of interaction with α 4 β 1 integrin that is the main adhesion molecule involved in lymphocyte transmigration to the brain and is the target for natalizumab, the most potent drug preventing relapses. We produced recombinant osteopontin and its N- and C-terminal fragments in an eukaryotic system in order to allow their posttranslational modifications. We investigated, in vitro, their effect on human cells and in vivo in EAE. We found that the osteopontin cleavage plays a key role in the function of this cytokine and that the two fragments exert distinct effects both in vitro and in vivo. These findings suggest that drugs targeting each fragment may be used to fine-tune the pathological effects of osteopontin in several diseases. © 2016 Elena Boggio et al.},
  author       = {Boggio, E. and Dianzani, C. and Gigliotti, C.L. and Soluri, M.F. and Clemente, N. and Cappellano, G. and Toth, E. and Raineri, D. and Ferrara, B. and Comi, C. and Dianzani, U. and Chiocchetti, Andreas},
  issn         = {2314-7156},
  keyword      = {biological marker,cytokine,osteopontin,peptide fragment,recombinant protein,thrombin, animal,biosynthesis,disease model,drug effects,enzyme activation,experimental autoimmune encephalomyelitis,genetics,human,immunology,metabolism,mononuclear cell,mouse,multiple sclerosis,protein degradation,T lymphocyte subpopulation, Animals,Biomarkers,Cytokines,Disease Models, Animal,Encephalomyelitis, Autoimmune, Experimental,Enzyme Activation,Humans,Leukocytes, Mononuclear,Mice,Multiple Sclerosis,Osteopontin,Peptide Fragments,Proteolysis,Recombinant Proteins,T-Lymphocyte Subsets,Thrombin},
  language     = {eng},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Journal of Immunology Research},
  title        = {Thrombin Cleavage of Osteopontin Modulates Its Activities in Human Cells In Vitro and Mouse Experimental Autoimmune Encephalomyelitis In Vivo},
  url          = {http://dx.doi.org/10.1155/2016/9345495},
  volume       = {2016},
  year         = {2016},
}