We provide a series of protocols that have been used for the cyclic transmission of rodent malaria parasites in the laboratory. This is now possible both in vivo and in vitro. We focus on the least "resource intensive" and generic methods that we find applicable to any parasite-host combination. Nonetheless, we recognize that the ability to construct transgenic "reporter" parasites/hosts now permits the use of elegant analytical and imaging technologies both in vitro, ex vivo, and in vivo in specific instances. The descriptions given illustrate methods routinely used for the maintenance of P. berghei; where critical, we note important differences when transmitting other parasite species.
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http://dx.doi.org/10.1007/978-1-62703-026-7_5 | DOI Listing |
Nat Commun
January 2025
Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, 06520, USA.
Plasmodium, the causative agents of malaria, are obtained by mosquitoes from an infected human. Following Plasmodium acquisition by Anopheles gambiae, mosquito gamma-interferon-inducible lysosomal thiol reductase (mosGILT) plays a critical role in its subsequent sporogony in the mosquito. A critical location for this development is the midgut, a tissue we show expresses mosGILT.
View Article and Find Full Text PDFPathogens
November 2024
Centre de Résonance Magnétique Biologique et Médicale (CRMBM) UMR 7339, Faculté des Sciences Médicales et Paramédicales la Timone, Aix-Marseille Université, CNRS, 13055 Marseille, France.
Cerebral malaria (CM), the most lethal clinical syndrome of infection, mostly affects children under 5 in sub-Saharan Africa. CM is characterized by seizures and impaired consciousness that lead to death in 15-20% of cases if treated quickly, but it is completely fatal when untreated. Brain magnetic resonance imaging (MRI) is an invaluable source of information on the pathophysiology of brain damage, but, due to limited access to scanners in endemic regions, only until very recently have case reports of CM patients studied with advanced MRI methods been published.
View Article and Find Full Text PDFScience
January 2025
Antibody Biology Unit, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA.
The most advanced monoclonal antibodies (mAbs) and vaccines against malaria target the central repeat region or closely related sequences within the circumsporozoite protein (PfCSP). Here, using an antigen-agnostic strategy to investigate human antibody responses to whole sporozoites, we identified a class of mAbs that target a cryptic PfCSP epitope that is only exposed after cleavage and subsequent pyroglutamylation (pGlu) of the newly formed N terminus. This pGlu-CSP epitope is not targeted by current anti-PfCSP mAbs and is not included in the licensed malaria vaccines.
View Article and Find Full Text PDFPLoS One
December 2024
Institute of Cell Biology, University of Bern, Bern, Switzerland.
Malaria caused by Plasmodium parasites remains a large health burden. One approach to combat this disease involves vaccinating individuals with whole sporozoites that have been genetically modified to arrest their development at a specific stage in the liver by targeted gene deletion, resulting in a genetically attenuated parasite (GAP). Through a comprehensive phenotyping screen, we identified the hscb gene, encoding a putative iron-sulfur protein assembly chaperone, as crucial for liver stage development, making it a suitable candidate gene for GAP generation.
View Article and Find Full Text PDFInt J Nanomedicine
December 2024
Department of Zoology, College of Science, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia.
Introduction: Malaria caused by spp. is the most hazardous disease in the world. It is regarded as a life-threatening hematological disorder caused by parasites transferred to humans by the bite of Anopheles mosquitoes.
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