Anaphylatoxin-like molecules generated during complement activation induce a dramatic enhancement of particle uptake in rainbow trout phagocytes.

Mirella Vazzana, Li, J; Peters, R; Lapatra, S; Sunyer, Jo

Risultato della ricerca: Articlepeer review

28 Citazioni (Scopus)

Abstract

Abstract Here we have identified a serum fraction containing ,8-kDa molecules with an unexpected capacity to greatly enhance particle uptake in trout head kidney leukocytes (HKLs). This ,8-kDa particle-uptake enhancing fraction (PUEF-8) was purified from complement-activated serum by gel filtration chromatography. Mass spectrometric analysis and reactivity of antitrout C3-1 and C4 antibodies, indicated the presence of C3a, C4a and C5a molecules in PUEF-8. Using a newly developed flow cytometric assay that measures the capacity of cells to ingest fluorescent beads, we showed that PUEF-8 induced a striking enhancement (344 ^ 50% higher than the PBS control value) in the number of HKLs ingesting three or more beads. In contrast, the effect of PUEF-8 on peripheral blood leukocytes (PBLs) was almost negligible. Interestingly, PUEF-8 acted as a strong chemoattractant for both HKLs and PBLs. These findings suggest a novel role for the anaphylatoxins generated during complement activation in teleost fish.
Lingua originaleEnglish
pagine (da-a)1005-1021
RivistaDevelopmental and Comparative Immunology
Volume28
Stato di pubblicazionePublished - 2004

Fingerprint

Entra nei temi di ricerca di 'Anaphylatoxin-like molecules generated during complement activation induce a dramatic enhancement of particle uptake in rainbow trout phagocytes.'. Insieme formano una fingerprint unica.

Cita questo