PMID- 11493312 OWN - NLM STAT- MEDLINE DCOM- 20011025 LR - 20220408 IS - 0906-6705 (Print) IS - 0906-6705 (Linking) VI - 10 IP - 4 DP - 2001 Aug TI - Psoriasis scales contain C5a as the predominant chemotaxin for monocyte-derived dendritic cells. PG - 238-45 AB - Dendritic cells seem to be of major importance for the pathogenesis of psoriasis. They are increased in number in lesional psoriatic skin which is thought to be due to an increased influx from the peripheral blood regulated by chemotaxins. Using a biological/biochemical approach we have addressed the question whether psoriasis scale extracts contain proteinaceous chemotaxins for dendritic cells. Human monocytes differentiated into dendritic cells by culture with GM-CSF and IL-4 (MoDC) served as responder cells. Chemotactic activity for MoDC was purified by several HPLC-steps. The results of our study show that C5a/C5adesarg is the major chemotactic peptide for MoDC in psoriasis scale extracts. In comparison to other stimuli such as fMLP or monocyte chemotactic peptide 1 (MCP-1) C5a proved to be a most potent and efficient chemotaxin for MoDC. C5a co-eluted with MRP14/calgranulin B which is present in large amounts in psoriasis scale extracts as identified by amino acid sequencing. However, MRP14/calgranulin B did not possess any chemotactic activity for MoDC. Our results provide evidence that C5a/C5adesarg although not specific for dendritic cells seems to be the major chemoattractant for these cells in lesional psoriasis skin. FAU - Mrowietz, U AU - Mrowietz U AD - Dept of Dermatology, University of Kiel, Schittenhelmstr. 7, 24105 Kiel, Germany. umrowietz@dermatology.uni-kiel.de FAU - Koch, W A AU - Koch WA FAU - Zhu, K AU - Zhu K FAU - Wiedow, O AU - Wiedow O FAU - Bartels, J AU - Bartels J FAU - Christophers, E AU - Christophers E FAU - Schroder, J M AU - Schroder JM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Exp Dermatol JT - Experimental dermatology JID - 9301549 RN - 0 (Antigens, Differentiation) RN - 0 (Calcium-Binding Proteins) RN - 0 (Calgranulin B) RN - 0 (Chemotactic Factors) RN - 0 (S100 Proteins) RN - 80295-54-1 (Complement C5a) SB - IM MH - Amino Acid Sequence/genetics MH - Antigens, Differentiation/genetics/isolation & purification/physiology MH - Calcium-Binding Proteins/genetics/isolation & purification/physiology MH - Calgranulin B MH - Cell Division MH - Chemotactic Factors/*metabolism MH - Chemotaxis/physiology MH - Complement C5a/*metabolism MH - Dendritic Cells/*cytology/*physiology MH - Enzyme-Linked Immunosorbent Assay MH - Humans MH - Monocytes/*cytology MH - Neutrophils/chemistry MH - Psoriasis/*metabolism/pathology MH - S100 Proteins/genetics/isolation & purification/physiology EDAT- 2001/08/09 10:00 MHDA- 2001/10/26 10:01 CRDT- 2001/08/09 10:00 PHST- 2001/08/09 10:00 [pubmed] PHST- 2001/10/26 10:01 [medline] PHST- 2001/08/09 10:00 [entrez] AID - exd100403 [pii] AID - 10.1034/j.1600-0625.2001.100403.x [doi] PST - ppublish SO - Exp Dermatol. 2001 Aug;10(4):238-45. doi: 10.1034/j.1600-0625.2001.100403.x.