» Articles » PMID: 16051702

Murine Malaria Parasite Sequestration: CD36 is the Major Receptor, but Cerebral Pathology is Unlinked to Sequestration

Abstract

Sequestration of malaria-parasite-infected erythrocytes in the microvasculature of organs is thought to be a significant cause of pathology. Cerebral malaria (CM) is a major complication of Plasmodium falciparum infections, and PfEMP1-mediated sequestration of infected red blood cells has been considered to be the major feature leading to CM-related pathology. We report a system for the real-time in vivo imaging of sequestration using transgenic luciferase-expressing parasites of the rodent malaria parasite Plasmodium berghei. These studies revealed that: (i) as expected, lung tissue is a major site, but, unexpectedly, adipose tissue contributes significantly to sequestration, and (ii) the class II scavenger-receptor CD36 to which PfEMP1 can bind is also the major receptor for P. berghei sequestration, indicating a role for alternative parasite ligands, because orthologues of PfEMP1 are absent from rodent malaria parasites, and, importantly, (iii) cerebral complications still develop in the absence of CD36-mediated sequestration, dissociating parasite sequestration from CM-associated pathology. Real-time in vivo imaging of parasitic processes may be used to evaluate the molecular basis of pathology and develop strategies to prevent pathology.

Citing Articles

A high content imaging assay for identification of specific inhibitors of native liver stage protein synthesis.

McLellan J, Morales-Hernandez B, Saeger S, Hanson K Antimicrob Agents Chemother. 2024; 68(10):e0079324.

PMID: 39254294 PMC: 11459927. DOI: 10.1128/aac.00793-24.


A high content imaging assay for identification of specific inhibitors of native liver stage protein synthesis.

McLellan J, Morales-Hernandez B, Saeger S, Hanson K bioRxiv. 2024; .

PMID: 38854116 PMC: 11160711. DOI: 10.1101/2024.05.29.596519.


Let it glow: genetically encoded fluorescent reporters in Plasmodium.

Thiele P, Mela-Lopez R, Blandin S, Klug D Malar J. 2024; 23(1):114.

PMID: 38643106 PMC: 11032601. DOI: 10.1186/s12936-024-04936-9.


Preclinical Models for Cryptococcosis of the CNS and Their Characterization Using In Vivo Imaging Techniques.

Roosen L, Maes D, Musetta L, Himmelreich U J Fungi (Basel). 2024; 10(2).

PMID: 38392818 PMC: 10890286. DOI: 10.3390/jof10020146.


Correlative light-electron microscopy methods to characterize the ultrastructural features of the replicative and dormant liver stages of Plasmodium parasites.

Mitchell G, Torres L, Fishbaugher M, Lam M, Chuenchob V, Zalpuri R Malar J. 2024; 23(1):53.

PMID: 38383417 PMC: 10882739. DOI: 10.1186/s12936-024-04862-w.


References
1.
Janse C, Waters A . The development of genetic tools for dissecting the biology of malaria parasites. Annu Rev Microbiol. 2000; 54:157-85. DOI: 10.1146/annurev.micro.54.1.157. View

2.
Pasvol G . Cell-cell interaction in the pathogenesis of severe falciparum malaria. Clin Med (Lond). 2002; 1(6):495-500. PMC: 4953878. DOI: 10.7861/clinmedicine.1-6-495. View

3.
Mota M, Jarra W, Hirst E, Patnaik P, Holder A . Plasmodium chabaudi-infected erythrocytes adhere to CD36 and bind to microvascular endothelial cells in an organ-specific way. Infect Immun. 2000; 68(7):4135-44. PMC: 101711. DOI: 10.1128/IAI.68.7.4135-4144.2000. View

4.
Janse C, Waters A . Plasmodium berghei: the application of cultivation and purification techniques to molecular studies of malaria parasites. Parasitol Today. 1995; 11(4):138-43. DOI: 10.1016/0169-4758(95)80133-2. View

5.
MILLER L . Distribution of mature trophozoites and schizonts of Plasmodium falciparum in the organs of Aotus trivirgatus, the night monkey. Am J Trop Med Hyg. 1969; 18(6):860-5. DOI: 10.4269/ajtmh.1969.18.860. View