Steroid Hormone Function Controls Non-competitive Plasmodium Development in Anopheles.
Cell
; 177(2): 315-325.e14, 2019 04 04.
Article
en En
| MEDLINE
| ID: mdl-30929905
ABSTRACT
Transmission of malaria parasites occurs when a female Anopheles mosquito feeds on an infected host to acquire nutrients for egg development. How parasites are affected by oogenetic processes, principally orchestrated by the steroid hormone 20-hydroxyecdysone (20E), remains largely unknown. Here we show that Plasmodium falciparum development is intimately but not competitively linked to processes shaping Anopheles gambiae reproduction. We unveil a 20E-mediated positive correlation between egg and oocyst numbers; impairing oogenesis by multiple 20E manipulations decreases parasite intensities. These manipulations, however, accelerate Plasmodium growth rates, allowing sporozoites to become infectious sooner. Parasites exploit mosquito lipids for faster growth, but they do so without further affecting egg development. These results suggest that P. falciparum has adopted a non-competitive evolutionary strategy of resource exploitation to optimize transmission while minimizing fitness costs to its mosquito vector. Our findings have profound implications for currently proposed control strategies aimed at suppressing mosquito populations.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Malaria Falciparum
/
Ecdisterona
/
Interacciones Huésped-Parásitos
Límite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Cell
Año:
2019
Tipo del documento:
Article
País de afiliación:
Estados Unidos