Identification of malaria parasite-infected red blood cell surface aptamers by inertial microfluidic SELEX (I-SELEX).
Identification of malaria parasite-infected red blood cell surface aptamers by inertial microfluidic SELEX (I-SELEX).
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DOI:
10.1038/srep11347
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发表时间:
2015-07-01
影响因子:
4.6
通讯作者:
Niles JC
中科院分区:
文献类型:
--
作者:
Birch CM;Hou HW;Han J;Niles JC
Plasmodium falciparum malaria parasites invade and remodel human red blood cells (RBCs) by trafficking parasite-synthesized proteins to the RBC surface. While these proteins mediate interactions with host cells that contribute to disease pathogenesis, the infected RBC surface proteome remains poorly characterized. Here we use a novel strategy (I-SELEX) to discover high affinity aptamers that selectively recognize distinct epitopes uniquely present on parasite-infected RBCs. Based on inertial focusing in spiral microfluidic channels, I-SELEX enables stringent partitioning of cells (efficiency ≥ 106) from unbound oligonucleotides at high volume throughput (~2 × 106 cells min−1). Using an RBC model displaying a single, non-native antigen and live malaria parasite-infected RBCs as targets, we establish suitability of this strategy for de novo aptamer selections. We demonstrate recovery of a diverse set of aptamers that recognize distinct, surface-displayed epitopes on parasite-infected RBCs with nanomolar affinity, including an aptamer against the protein responsible for placental sequestration, var2CSA. These findings validate I-SELEX as a broadly applicable aptamer discovery platform that enables identification of new reagents for mapping the parasite-infected RBC surface proteome at higher molecular resolution to potentially contribute to malaria diagnostics, therapeutics and vaccine efforts.
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影响因子:
6.7
作者:
Heiber A;Kruse F;Pick C;Grüring C;Flemming S;Oberli A;Schoeler H;Retzlaff S;Mesén-Ramírez P;Hiss JA;Kadekoppala M;Hecht L;Holder AA;Gilberger TW;Spielmann T
通讯作者:
Spielmann T
DOI:
10.1073/pnas.1120455109
发表时间:
2012-06-26
影响因子:
11.1
作者:
Lavstsen, Thomas;Turner, Louise;Theander, Thor G.
通讯作者:
Theander, Thor G.
影响因子:
56.9
作者:
Fried, M;Duffy, PE
通讯作者:
Duffy, PE
影响因子:
6.1
作者:
Kuntaegowdanahalli, Sathyakumar S.;Bhagat, Ali Asgar S.;Papautsky, Ian
通讯作者:
Papautsky, Ian
影响因子:
7.4
作者:
Di Carlo, Dino;Edd, Jon F.;Toner, Mehmet
通讯作者:
Toner, Mehmet