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A different repertoire of Galleria mellonella antimicrobial peptides in larvae challenged with bacteria and fungi.

Abstract：

:To date, functioning of insect humoral immune response is especially well described in Diptera. The mechanisms of pathogen recognition, activation of signaling pathways and regulation of antimicrobial defense peptide expression are relatively well known. The present paper demonstrates evidence that the immune system of the Lepidoptera moth, Galleria mellonella, is also able to distinguish between different classes of microorganisms and responds to the invading pathogen accordingly. G. mellonella larvae were challenged with Gram-negative and Gram-positive bacteria as well as with yeast and filamentous fungus cells. Subsequently, 24, 48 and 72 h after immunization, the concentrations of lysozyme and six defense peptides were determined in the hemolymph by the HPLC technique. The compounds studied demonstrated variability both in the kinetics of the increase as well as in the concentrations reached. The Gram-negative bacterium and filamentous fungus were particularly effective immunogens, especially affecting the levels of lysozyme, Galleria defensin, proline-rich peptide 2 and cecropin D-like peptide.

journal_name

Dev Comp Immunol

journal_title

Developmental and comparative immunology

authors

Mak P,Zdybicka-Barabas A,Cytryńska M

doi

10.1016/j.dci.2010.06.005

subject

Has Abstract

pub_date

2010-10-01 00:00:00

pages

1129-36

issue

10

eissn

0145-305X

issn

1879-0089

pii

S0145-305X(10)00131-X

journal_volume

34

pub_type

杂志文章

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