Characterization of human placental glycosaminoglycans and regional binding to VAR2CSA in malaria infected erythrocytes
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Characterization of human placental glycosaminoglycans and regional binding to VAR2CSA in malaria infected erythrocytes. / Beaudet, Julie M; Mansur, Leandra; Joo, Eun Ji; Kamhi, Eyal; Yang, Bo; Clausen, Thomas M; Salanti, Ali; Zhang, Fuming; Linhardt, Robert J.
In: Glycoconjugate Journal, Vol. 31, No. 2, 02.2014, p. 109-16.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Characterization of human placental glycosaminoglycans and regional binding to VAR2CSA in malaria infected erythrocytes
AU - Beaudet, Julie M
AU - Mansur, Leandra
AU - Joo, Eun Ji
AU - Kamhi, Eyal
AU - Yang, Bo
AU - Clausen, Thomas M
AU - Salanti, Ali
AU - Zhang, Fuming
AU - Linhardt, Robert J
PY - 2014/2
Y1 - 2014/2
N2 - Placental malaria is a serious problem in sub-Saharan Africa. Young women are particular susceptible to contracting this form of malaria during their first or second pregnancy despite previously acquired immunity from past infections. Placental malaria is caused by Plasmodium falciparum parasites expressing VAR2CSA on the erythrocyte surface. This protein adheres to a low-sulfated chondroitin sulfate-A found in placental tissue causing great harm to both mother and developing fetus. In rare cases, the localization of infected erythrocytes to the placenta can even result in the vertical transmission of malaria. In an effort to better understand this infection, chondroitin sulfate was isolated from the cotyledon part of the placenta, which should be accessible for parasite adhesion, as well as two non-accessible parts of the placenta to serve as controls. The placental chondroitin sulfate structures and their VAR2CSA binding were characterized. All portions of human placenta contained sufficient amounts of the appropriate low-sulfated chondroitin sulfate-A to display high-affinity binding to a recombinant truncated VAR2CSA construct, as determined using surface plasmon resonance. The cotyledon is the only placental tissue accessible to parasites in the bloodstream, suggesting it is the primary receptor for parasite infected red blood cells.
AB - Placental malaria is a serious problem in sub-Saharan Africa. Young women are particular susceptible to contracting this form of malaria during their first or second pregnancy despite previously acquired immunity from past infections. Placental malaria is caused by Plasmodium falciparum parasites expressing VAR2CSA on the erythrocyte surface. This protein adheres to a low-sulfated chondroitin sulfate-A found in placental tissue causing great harm to both mother and developing fetus. In rare cases, the localization of infected erythrocytes to the placenta can even result in the vertical transmission of malaria. In an effort to better understand this infection, chondroitin sulfate was isolated from the cotyledon part of the placenta, which should be accessible for parasite adhesion, as well as two non-accessible parts of the placenta to serve as controls. The placental chondroitin sulfate structures and their VAR2CSA binding were characterized. All portions of human placenta contained sufficient amounts of the appropriate low-sulfated chondroitin sulfate-A to display high-affinity binding to a recombinant truncated VAR2CSA construct, as determined using surface plasmon resonance. The cotyledon is the only placental tissue accessible to parasites in the bloodstream, suggesting it is the primary receptor for parasite infected red blood cells.
U2 - 10.1007/s10719-013-9506-6
DO - 10.1007/s10719-013-9506-6
M3 - Journal article
C2 - 24158546
VL - 31
SP - 109
EP - 116
JO - Glycoconjugate Journal
JF - Glycoconjugate Journal
SN - 0282-0080
IS - 2
ER -
ID: 98579663