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Title: Nanofocused Scanning X-ray Fluorescence Microscopy Revealing an Effect of Heterozygous Hemoglobin S and C on Biochemical Activities in Plasmodium falciparum-Infected Erythrocytes

Journal Article · · Analytical Chemistry
 [1]; ORCiD logo [2];  [1];  [1];  [3];  [3];  [3]; ORCiD logo [4]; ORCiD logo [5]
  1. Heidelberg Univ. (Germany)
  2. European Synchrotron Radiation Facility (ESRF), Grenoble (France); Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  3. Universitätsklinikum Heidelberg (Germany)
  4. The European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
  5. Heidelberg Univ. (Germany); Kyoto Univ. (Japan)

While there is ample evidence suggesting that carriers of heterozygous hemoglobin S and C are protected from life-threatening malaria, little is known about the underlying biochemical mechanisms at the single cell level. In this work, using nanofocused scanning X-ray fluorescence microscopy, we quantify the spatial distribution of individual elements in subcellular compartments, including Fe, S, P, Zn, and Cu, in Plasmodium falciparum-infected (P. falciparum-infected) erythrocytes carrying the wild type or variant hemoglobins. Our data indicate that heterozygous hemoglobin S and C significantly modulate biochemical reactions in parasitized erythrocytes, such as aberrant hemozoin mineralization and a delay in hemoglobin degradation. The label-free scanning X-ray fluorescence imaging has great potential to quantify the spatial distribution of elements in subcellular compartments of P. falciparum-infected erythrocytes and unravel the biochemical mechanisms underpinning disease and protective traits.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG); Germany’s Excellence Strategy; Japan Society for the Promotion of Science (JSPS); Nakatani Foundation
Grant/Contract Number:
SC0012704; SFB1129 P3; 2082/1-390761711
OSTI ID:
1646582
Report Number(s):
BNL-216237-2020-JAAM
Journal Information:
Analytical Chemistry, Vol. 92, Issue 8; ISSN 0003-2700
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

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