The protease inhibitor cystatin C is differentially expressed among dendritic cell populations, but does not control antigen presentation
El-Sukkari, D ; Wilson, NS ; Håkansson, Katarina LU ; Steptoe, RJ ; Grubb, Anders LU
; Shortman, K
and Villadangos, JA
(2003)
In Journal of Immunology
171(10).
p.5003-5011
- Abstract
- Dendritic cells (DC) undergo complex developmental changes during maturation. The MHC class H (MHC H) molecules of immature DC accumulate in intracellular compartments, but are expressed at high levels on the plasma membrane upon DC maturation. It has been proposed that the cysteine protease inhibitor cystatin C (CyC) plays a pivotal role in the control of this process by regulating the activity of cathepsin S, a protease involved in removal of the MHC H chaperone E, and hence in the formation of MHC H-peptide complexes. We show that CyC is differentially expressed by mouse DC populations. CD8(+) DC, but not CD4(+) or CD4(-)CD8(-) DC, synthesize CyC, which accumulates in MHC II(+)Lamp(+) compartments. However, II processing and MHC H... (More)
- Dendritic cells (DC) undergo complex developmental changes during maturation. The MHC class H (MHC H) molecules of immature DC accumulate in intracellular compartments, but are expressed at high levels on the plasma membrane upon DC maturation. It has been proposed that the cysteine protease inhibitor cystatin C (CyC) plays a pivotal role in the control of this process by regulating the activity of cathepsin S, a protease involved in removal of the MHC H chaperone E, and hence in the formation of MHC H-peptide complexes. We show that CyC is differentially expressed by mouse DC populations. CD8(+) DC, but not CD4(+) or CD4(-)CD8(-) DC, synthesize CyC, which accumulates in MHC II(+)Lamp(+) compartments. However, II processing and MHC H peptide loading proceeded similarly in all three DC populations. We then analyzed MHC H localization and Ag presentation in CD8(+) DC, bone marrow-derived DC, and spleen-derived DC lines, from CyC-deficient mice. The absence of CyC did not affect the expression, the subcellular distribution, or the formation of peptide-loaded MHC II complexes in any of these DC types, nor the efficiency of presentation of exogenous Ags. Therefore, CyC is neither necessary nor sufficient to control MHC II expression and Ag presentation in DC. Our results also show that CyC expression can differ markedly between closely related cell types, suggesting the existence of hitherto unrecognized mechanisms of control of CyC expression. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/294973
- author
- El-Sukkari, D
; Wilson, NS
; Håkansson, Katarina
LU
; Steptoe, RJ
; Grubb, Anders
LU
; Shortman, K
and Villadangos, JA
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Immunology
- volume
- 171
- issue
- 10
- pages
- 5003 - 5011
- publisher
- American Association of Immunologists
- external identifiers
-
- pmid:14607896
- wos:000186643300010
- scopus:0242495719
- ISSN
- 1550-6606
- language
- English
- LU publication?
- yes
- id
- 08a4bd75-d02d-43e6-968e-1468b64fbbaf (old id 294973)
- alternative location
- http://www.jimmunol.org/cgi/content/abstract/171/10/5003
- date added to LUP
- 2016-04-01 15:17:33
- date last changed
- 2023-01-04 08:39:16
@article{08a4bd75-d02d-43e6-968e-1468b64fbbaf,
abstract = {{Dendritic cells (DC) undergo complex developmental changes during maturation. The MHC class H (MHC H) molecules of immature DC accumulate in intracellular compartments, but are expressed at high levels on the plasma membrane upon DC maturation. It has been proposed that the cysteine protease inhibitor cystatin C (CyC) plays a pivotal role in the control of this process by regulating the activity of cathepsin S, a protease involved in removal of the MHC H chaperone E, and hence in the formation of MHC H-peptide complexes. We show that CyC is differentially expressed by mouse DC populations. CD8(+) DC, but not CD4(+) or CD4(-)CD8(-) DC, synthesize CyC, which accumulates in MHC II(+)Lamp(+) compartments. However, II processing and MHC H peptide loading proceeded similarly in all three DC populations. We then analyzed MHC H localization and Ag presentation in CD8(+) DC, bone marrow-derived DC, and spleen-derived DC lines, from CyC-deficient mice. The absence of CyC did not affect the expression, the subcellular distribution, or the formation of peptide-loaded MHC II complexes in any of these DC types, nor the efficiency of presentation of exogenous Ags. Therefore, CyC is neither necessary nor sufficient to control MHC II expression and Ag presentation in DC. Our results also show that CyC expression can differ markedly between closely related cell types, suggesting the existence of hitherto unrecognized mechanisms of control of CyC expression.}},
author = {{El-Sukkari, D and Wilson, NS and Håkansson, Katarina and Steptoe, RJ and Grubb, Anders and Shortman, K and Villadangos, JA}},
issn = {{1550-6606}},
language = {{eng}},
number = {{10}},
pages = {{5003--5011}},
publisher = {{American Association of Immunologists}},
series = {{Journal of Immunology}},
title = {{The protease inhibitor cystatin C is differentially expressed among dendritic cell populations, but does not control antigen presentation}},
url = {{http://www.jimmunol.org/cgi/content/abstract/171/10/5003}},
volume = {{171}},
year = {{2003}},
}