期刊
INSECT MOLECULAR BIOLOGY
卷 9, 期 1, 页码 75-84出版社
WILEY
DOI: 10.1046/j.1365-2583.2000.00164.x
关键词
Anopheles gambiae; cecropin; malaria; antimicrobial peptide; innate immunity
资金
- NIAID NIH HHS [1P01AI44220] Funding Source: Medline
Parasites of the genus Plasmodium are transmitted to mammalian hosts by anopheline mosquitoes. Within the insect vector, parasite growth and development are potentially limited by antimicrobial defence molecules. Here, we describe the isolation of cDNA and genomic clones encoding a cecropin antibacterial peptide from the malaria vector mosquito Anopheles gambiae. The locus was mapped to polytene division 1C of the X chromosome. Cecropin RNA was induced by infection with bacteria and Plasmodium. RNA levels varied in different body parts of the adult mosquito. During development, cecropin expression was limited to the early pupal stage. The peptide was purified from both adult mosquitoes and cell culture supernatants. Anopheles gambiae synthetic cecropins displayed activity against Gram-negative and Gram-positive bacteria, filamentous fungi and yeasts.
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