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Methods to Investigate the Regulatory Role of Small RNAs and Ribosomal Occupancy of Plasmodium falciparum
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The avian transcriptome response to malaria infection.

Elin Videvall1, Charlie K Cornwallis2, Vaidas Palinauskas3

  • 1Department of Biology, Lund University, Lund, Sweden elin.videvall@biol.lu.se olof.hellgren@biol.lu.se.

Molecular Biology and Evolution
|February 1, 2015
PubMed
Summary

Avian malaria infection significantly alters the Eurasian siskin transcriptome, revealing immune and metabolic gene shifts. This study highlights conserved host responses to malaria across species.

Keywords:
PlasmodiumRNA-seqexperimental infectionhost responseimmune defensetranscriptome

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Area of Science:

  • Molecular Biology
  • Immunology
  • Genomics

Background:

  • Malaria parasites infect diverse vertebrates, yet host control mechanisms are poorly understood.
  • Next-generation sequencing enables comprehensive analysis of host responses to infection.

Purpose of the Study:

  • To investigate the avian blood transcriptome response to Plasmodium ashfordi infection in Eurasian siskins.
  • To identify differentially expressed genes and conserved host response pathways.

Main Methods:

  • Experimental infection of Eurasian siskins with Plasmodium ashfordi.
  • High-throughput RNA-sequencing of blood at pre-infection, peak parasitemia, and decreasing parasitemia stages.

Main Results:

  • Significant differences in transcriptomes between infected and uninfected siskins were observed.
  • Differentially expressed genes were enriched in immune, stress, metabolism, and telomerase pathways.
  • Comparative analysis identified potentially conserved malaria response genes across avian, human, and mouse hosts.

Conclusions:

  • Avian blood transcriptome shifts significantly during malaria infection.
  • RNA-sequencing identified both known and novel genes, including microRNAs, involved in host defense.
  • This research provides insights into diverse molecular mechanisms underlying host-malaria interactions.