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Updated: Aug 14, 2026

Understanding the Development of Compensatory Pathways in a Mutant Malaria Parasite Harbouring Hypomorphic Allele of Plant-Like Kinases
Published on: November 22, 2024
Metabolite-effector immunity against malaria
Miguel P Soares1, Miguel Mesquita2, Ana Figueiredo2
1Gulbenkian Institute for Molecular Medicine (GIMM), Avenida Professor Egas Moniz, 1649-035 Lisboa, Portugal; Faculdade de Medicina da Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-035 Lisboa, Portugal.
Jaundice, characterized by bilirubin accumulation, may be an adaptive response to malaria. This perspective reframes bilirubin as a key component of metabolic immunity against Plasmodium parasites.
Area of Science:
- Immunology
- Parasitology
- Biochemistry
Background:
- Jaundice is typically viewed as a sign of hemolysis or liver dysfunction.
- The accumulation of bilirubin in plasma is the hallmark of jaundice.
Purpose of the Study:
- To propose a new framework viewing jaundice as an adaptive response to malaria.
- To explore bilirubin's role as an effector in metabolic immunity against Plasmodium parasites.
Main Methods:
- Review of genetic, biochemical, and clinical evidence.
- Analysis of bilirubin's antiplasmodial mechanisms.
- Discussion of evolutionary implications.
Main Results:
- Bilirubin exhibits multitarget antiplasmodial activity.
- A protective threshold for bilirubin's efficacy was defined.
- Metabolite-effector immunity is proposed as a novel host-pathogen framework.
Conclusions:
- Jaundice, mediated by bilirubin, can be an adaptive host defense against malaria.
- Bilirubin functions as a distinct arm of metabolic immunity.
- The concept of metabolite-effector immunity offers a new lens for host-pathogen interactions.
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