2026-04-29T02:37:35Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/265202025-12-18T13:01:40Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19609

00925njm 22002777a 4500 dc Pala, Zarna Rajeshkumar author Alves E Silva, Thiago Luiz author Minai, Mahnaz author Crews, Benjamin author Patino-Martinez, Eduardo author Carmona-Rivera, Carmelo author Valenzuela Leon, Paola Carolina author Martin-Martin, Ines author Flores-Garcia, Yevel author Cachau, Raul E author Muslinkina, Liya author Gittis, Apostolos G author Srivastava, Naman author Garboczi, David N author Alves, Derron A author Kaplan, Mariana J author Fischer, Elizabeth author Calvo, Eric author Vega-Rodriguez, Joel author 2024-09-18 The evolution of hematophagy involves a series of adaptations that allow blood-feeding insects to access and consume blood efficiently while managing and circumventing the host's hemostatic and immune responses. Mosquito, and other insects, utilize salivary proteins to regulate these responses at the bite site during and after blood feeding. We investigated the function of Anopheles gambiae salivary apyrase (AgApyrase) in regulating hemostasis in the mosquito blood meal and in Plasmodium transmission. Our results demonstrate that salivary apyrase, a known inhibitor of platelet aggregation, interacts with and activates tissue plasminogen activator, facilitating the conversion of plasminogen to plasmin, a human protease that degrades fibrin and facilitates Plasmodium transmission. We show that mosquitoes ingest a substantial amount of apyrase during blood feeding, which reduces coagulation in the blood meal by enhancing fibrin degradation and inhibiting platelet aggregation. AgApyrase significantly enhanced Plasmodium infection in the mosquito midgut, whereas AgApyrase immunization inhibited Plasmodium mosquito infection and sporozoite transmission. This study highlights a pivotal role for mosquito salivary apyrase for regulation of hemostasis in the mosquito blood meal and for Plasmodium transmission to mosquitoes and to the mammalian host, underscoring the potential for strategies to prevent malaria transmission. Pala ZR, Alves E Silva TL, Minai M, Crews B, Patino-Martinez E, Carmona-Rivera C, Valenzuela Leon PC, Martin-Martin I, Flores-Garcia Y, Cachau RE, Muslinkina L, Gittis AG, Srivastava N, Garboczi DN, Alves DA, Kaplan MJ, Fischer E, Calvo E, Vega-Rodriguez J. Mosquito salivary apyrase regulates blood meal hemostasis and facilitates malaria parasite transmission. Nat Commun. 2024 Sep 18;15(1):8194. https://hdl.handle.net/20.500.12105/26520 39294191 10.1038/s41467-024-52502-3 2041-1723 Nature communications Mosquito salivary apyrase regulates blood meal hemostasis and facilitates malaria parasite transmission