ATP induces protein arginine deiminase 2-dependent citrullination in mast cells through the P2X7 purinergic receptor.
ATP induces protein arginine deiminase 2-dependent citrullination in mast cells through the P2X7 purinergic receptor.
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DOI:
10.4049/jimmunol.1201098
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发表时间:
2012-10-15
期刊:
影响因子:
--
通讯作者:
Mowen KA
中科院分区:
文献类型:
--
作者:
Arandjelovic S;McKenney KR;Leming SS;Mowen KA
Posttranslational modifications regulate physiology either by directly modulating protein function or by impacting immune recognition of self proteins. Citrullination is a posttranslational modification formed by the conversion of arginine residues into the citrulline amino acid by protein arginine deiminase (PAD) family members. We have identified mast cells as a major source of the PAD2 enzyme. Activation of the P2X7 receptor by the inflammatory “danger” signal ATP induces PAD2 activity and robust protein citrullination. P2X7-mediated activation of PAD2 is sensitive to p38 MAPK and PKC inhibitors, and PAD2 regulates the expression of the TNFR2, Adamts-9, and Rab6b transcripts in mast cells. Further, the PAD2 enzyme and its citrullinated substrate proteins are released from mast cells upon activation with ATP. PAD2 expression is closely linked with inflammation in rheumatoid arthritis (RA) synovial tissue, and PAD2 and citrullinated proteins are found in the synovial fluid of RA patients. In addition, RA is associated with the development of autoantibodies to citrullinated self proteins. Our results suggest that P2X7 activation of mast cells may play a role in inflammation by providing PAD2 and PAD2 substrates access to the extracellular space.
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影响因子:
3.7
作者:
Hemmers S;Teijaro JR;Arandjelovic S;Mowen KA
通讯作者:
Mowen KA
影响因子:
7.3
作者:
Donnelly-Roberts, Diana L.;Namovic, Marian T.;Jarvis, Michael F.
通讯作者:
Jarvis, Michael F.
DOI:
10.1038/nri2938
发表时间:
2011-03
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
通讯作者:
--
影响因子:
--
作者:
Demircan, K;Hirohata, S;Ninomiya, Y
通讯作者:
Ninomiya, Y
影响因子:
6
作者:
Hegmans, JPJJ;Bard, MPL;Lambrecht, BN
通讯作者:
Lambrecht, BN