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Modification and ex...
Modification and expulsion of keratins by human epidermal keratinocytes upon hapten exposure in vitro.
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- Bauer, Brigitte, 1978 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg
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- Andersson, Sofia, 1983 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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- Stenfeldt, Anna-Lena, 1972 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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- Simonsson, Carl, 1976 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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- Bergström, Jörgen, 1953 (author)
- Gothenburg University,Göteborgs universitet,Core Facilities, Proteomics,Core Facilities, Proteomics,University of Gothenburg
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- Ericson, Marica B, 1974 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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- Jonsson, Charlotte A, 1971 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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Broo, Kerstin S (author)
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(creator_code:org_t)
- 2011-04-12
- 2011
- English.
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In: Chemical research in toxicology. - : American Chemical Society (ACS). - 1520-5010 .- 0893-228X. ; 24:5, s. 737-43
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Abstract
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- Allergic contact dermatitis is the most prevalent form of human immunotoxicity. It is caused by reactive low molecular weight chemicals, that is, haptens, coming in contact with the skin where hapten-peptide complexes are formed, activating the immune system. By using sensitizing fluorescent thiol-reactive haptens, that is, bromobimanes, we show how keratinocytes respond to hapten exposure in vitro and reveal, for the first time in a living system, an exact site of haptenation. Rapid internalization and reaction of haptens with keratin filaments were visualized. Subsequently, keratinocytes respond in vitro to hapten exposure by release of membrane blebs, which contain haptenated keratins 5 and 14. Particularly, cysteine 54 of K5 was found to be a specific target. A mechanism is proposed where neoepitopes, otherwise hidden from the immune system, are released after hapten exposure via keratinocyte blebbing. The observed expulsion of modified keratins by keratinocytes in vitro might play a role during hapten sensitization in vivo and should be subject to further investigations.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Andra medicinska och farmaceutiska grundvetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Other Basic Medicine (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Bauer, Brigitte, ...
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Andersson, Sofia ...
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Stenfeldt, Anna- ...
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Simonsson, Carl, ...
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Bergström, Jörge ...
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Ericson, Marica ...
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Jonsson, Charlot ...
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Broo, Kerstin S
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Other Basic Medi ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
- Articles in the publication
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Chemical researc ...
- By the university
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University of Gothenburg
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Chalmers University of Technology