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Updated: Jul 7, 2026
Isolation and Analysis of Brain-sequestered Leukocytes from Plasmodium berghei ANKA-infected Mice
Published on: January 2, 2013
Predominance of interferon-related responses in the brain during murine malaria, as identified by microarray analysis
Jenny Miu1, Nicholas H Hunt, Helen J Ball
1Molecular Immunopathology Unit, Bosch Institute, Medical Foundation Building (K25), University of Sydney, Sydney, New South Wales 2006, Australia.
Abstract:
Cerebral malaria (CM) can be a fatal manifestation of Plasmodium falciparum infection. We examined global gene expression patterns during fatal murine CM (FMCM) and noncerebral malaria (NCM) by microarray analysis. There was differential expression of a number of genes, including some not yet characterized in the pathogenesis of FMCM. Some gene induction was observed during Plasmodium berghei infection regardless of the development of CM, and there was a predominance of genes linked to interferon responses, even in NCM. However, upon real-time PCR validation and quantitation, these genes were much more highly expressed in FMCM than in NCM. The observed changes included genes belonging to pathways such as interferon signaling, major histocompatibility complex processing and presentation, apoptosis, and immunomodulatory and antimicrobial processes. We further characterized differentially expressed genes by examining the cellular source of their expression as well as their temporal expression patterns during the course of malaria infection. These data identify a number of novel genes that represent interesting candidates for further investigation in FMCM.
Insights
Fatal cerebral malaria (CM) involves distinct gene expression changes compared to noncerebral malaria (NCM). Interferon responses and immune pathways are significantly altered in fatal CM, revealing novel insights into disease pathogenesis.
Area of Science:
- Genomics
- Immunology
- Pathogenesis
Background:
- Cerebral malaria (CM) is a severe complication of Plasmodium falciparum infection.
- Understanding the molecular mechanisms underlying fatal CM (FMCM) is crucial for developing effective treatments.
Purpose of the Study:
- To investigate global gene expression patterns in murine models of fatal and noncerebral malaria.
- To identify novel genes and pathways involved in the pathogenesis of FMCM.
Main Methods:
- Microarray analysis was used to examine gene expression profiles in FMCM and NCM models.
- Real-time PCR was employed for validation and quantitation of key gene expressions.
Main Results:
- Differential gene expression was observed between FMCM and NCM, including genes not previously linked to CM pathogenesis.
- Interferon-responsive genes were upregulated in both CM types but significantly higher in FMCM.
- Key pathways identified include interferon signaling, MHC processing, apoptosis, and immune modulation.
Conclusions:
- Gene expression profiling reveals distinct molecular signatures differentiating fatal and noncerebral malaria.
- Novel candidate genes and pathways associated with FMCM pathogenesis were identified.
- Further research into these identified genes may offer new therapeutic targets for severe malaria.
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