Crossref journal-article
American Society for Microbiology
Infection and Immunity (235)
Abstract

ABSTRACT Apical membrane antigen 1 (AMA-1) of Plasmodium merozoites is established as a candidate molecule for inclusion in a human malaria vaccine and is strongly conserved in the genus. We have investigated its function in merozoite invasion by incubating Plasmodium knowlesi merozoites with red cells in the presence of a previously described rat monoclonal antibody (MAb R31C2) raised against an invasion-inhibitory epitope of P. knowlesi AMA-1 and then fixing the material for ultrastructural analysis. We have found that the random, initial, long-range (12 nm) contact between merozoites and red cells occurs normally in the presence of the antibody, showing that AMA-1 plays no part in this stage of attachment. Instead, inhibited merozoites fail to reorientate, so they do not bring their apices to bear on the red cell surface and do not make close junctional apical contact. We conclude that AMA-1 may be directly responsible for reorientation or that the molecule may initiate the junctional contact, which is then presumably dependent on Duffy binding proteins for its completion.

Bibliography

Mitchell, G. H., Thomas, A. W., Margos, G., Dluzewski, A. R., & Bannister, L. H. (2004). Apical Membrane Antigen 1, a Major Malaria Vaccine Candidate, Mediates the Close Attachment of Invasive Merozoites to Host Red Blood Cells. Infection and Immunity, 72(1), 154–158.

Authors 5
  1. G. H. Mitchell (first)
  2. A. W. Thomas (additional)
  3. G. Margos (additional)
  4. A. R. Dluzewski (additional)
  5. L. H. Bannister (additional)
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Dates
Type When
Created 21 years, 8 months ago (Dec. 19, 2003, 9:48 p.m.)
Deposited 3 years, 5 months ago (March 4, 2022, 11:52 p.m.)
Indexed 3 months, 1 week ago (May 26, 2025, 4:05 a.m.)
Issued 21 years, 8 months ago (Jan. 1, 2004)
Published 21 years, 8 months ago (Jan. 1, 2004)
Published Print 21 years, 8 months ago (Jan. 1, 2004)
Funders 0

None

@article{Mitchell_2004, title={Apical Membrane Antigen 1, a Major Malaria Vaccine Candidate, Mediates the Close Attachment of Invasive Merozoites to Host Red Blood Cells}, volume={72}, ISSN={1098-5522}, url={http://dx.doi.org/10.1128/iai.72.1.154-158.2004}, DOI={10.1128/iai.72.1.154-158.2004}, number={1}, journal={Infection and Immunity}, publisher={American Society for Microbiology}, author={Mitchell, G. H. and Thomas, A. W. and Margos, G. and Dluzewski, A. R. and Bannister, L. H.}, year={2004}, month=jan, pages={154–158} }