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In vitro human T cell responses to diphencyprone

In vitro human T cell responses to diphencyprone
In vitro human T cell responses to diphencyprone
The experimental contact sensitizer Diphencyprone (DPCP) is used both for topical immunotherapy and investigation of the human immune system. Analysis of mechanisms underlying altered immune responses requires in vitro systems. We have developed a method for detecting human T cell responses to DPCP in vitro. Twenty subjects were sensitized with DPCP (30?g/cm2) and 4 weeks later, were challenged with doses from 0.48 to 3.125?g. Responses at 48h showed all 20 were allergic. Peripheral blood mononuclear cells were cultured with a range of concentrations of DPCP for 6 days and proliferation quantified (3H thymidine uptake). The subjects were exposed repeatedly to DPCP (topical immunotherapy for warts or alopecia areata) or as repeated patch test challenges. Eight subjects gave positive lymphocyte proliferation responses (LPR), maximal responses being elicited with 16 or 32?M DPCP. Positive LPR became detectable from 20 weeks after sensitization and progressively more people become responsive over time to 40 weeks. The different time courses for manifestation of allergic reactivity in skin and blood probably reflects absence of memory T cells in blood due to their recruitment to skin as resident memory T cells. This assay can now be developed for analysis of components of the immune response.
0105-1873
251-253
Friedmann, Peter
d50bac23-f3ec-4493-8fa0-fa126cbeba88
Haddadeen, Ciara
8f6d1127-c1fb-478a-bd3f-5ca002d7f268
Lai, Chester
29ba48ea-2d38-497f-8cf9-400237f6a3a0
Healy, Eugene
400fc04d-f81a-474a-ae25-7ff894be0ebd
Friedmann, Peter
d50bac23-f3ec-4493-8fa0-fa126cbeba88
Haddadeen, Ciara
8f6d1127-c1fb-478a-bd3f-5ca002d7f268
Lai, Chester
29ba48ea-2d38-497f-8cf9-400237f6a3a0
Healy, Eugene
400fc04d-f81a-474a-ae25-7ff894be0ebd

Friedmann, Peter, Haddadeen, Ciara, Lai, Chester and Healy, Eugene (2017) In vitro human T cell responses to diphencyprone. Contact Dermatitis, 76 (4), 251-253. (doi:10.1111/cod.12697).

Record type: Article

Abstract

The experimental contact sensitizer Diphencyprone (DPCP) is used both for topical immunotherapy and investigation of the human immune system. Analysis of mechanisms underlying altered immune responses requires in vitro systems. We have developed a method for detecting human T cell responses to DPCP in vitro. Twenty subjects were sensitized with DPCP (30?g/cm2) and 4 weeks later, were challenged with doses from 0.48 to 3.125?g. Responses at 48h showed all 20 were allergic. Peripheral blood mononuclear cells were cultured with a range of concentrations of DPCP for 6 days and proliferation quantified (3H thymidine uptake). The subjects were exposed repeatedly to DPCP (topical immunotherapy for warts or alopecia areata) or as repeated patch test challenges. Eight subjects gave positive lymphocyte proliferation responses (LPR), maximal responses being elicited with 16 or 32?M DPCP. Positive LPR became detectable from 20 weeks after sensitization and progressively more people become responsive over time to 40 weeks. The different time courses for manifestation of allergic reactivity in skin and blood probably reflects absence of memory T cells in blood due to their recruitment to skin as resident memory T cells. This assay can now be developed for analysis of components of the immune response.

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E Healy - In vitro human T cell responses to diphencyprone - Contact Der....docx - Accepted Manuscript
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Accepted/In Press date: 29 August 2016
e-pub ahead of print date: 20 March 2017
Published date: April 2017
Organisations: Clinical & Experimental Sciences

Identifiers

Local EPrints ID: 400443
URI: https://eprints.soton.ac.uk/id/eprint/400443
ISSN: 0105-1873
PURE UUID: c418aef6-f0e5-4d2c-9dcb-29ffe6615306

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Date deposited: 14 Sep 2016 15:59
Last modified: 03 Dec 2019 06:33

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