Publications

Research outputs, reports, policy briefs and knowledge products from KIU scholars and partners.

2025 School of Pharmacy IDOSR JOURNAL OF SCIENTIFIC RESEARCH

Malaria and Immune Response Modulation: Insights into Host-Parasite Interactions and Vaccine Development

Mutebi Mark

Malaria remains a global health challenge, with over 200 million cases annually, particularly affecting sub-Saharan Africa. The disease is caused by Plasmodium parasites, primarily P. falciparum, and transmitted via female Anopheles mosquitoes. A central factor in malaria pathogenesis and persistence is the complex interplay between the parasite and the host immune system. Plasmodium has evolved diverse strategies to evade immune detection, including antigenic variation, immune suppression, and manipulation of host cytokine responses. Conversely, the human immune system mounts both innate and adaptive responses, albeit often insufficient to confer lasting immunity after infection. This review explores the mechanisms by which Plasmodium modulates host immunity, focusing on innate recognition pathways, dendritic cell dysfunction, T-cell exhaustion, and B-cell dysregulation. We also examine the role of immunological memory in malaria and its implications for natural immunity. Despite advances, vaccine development faces challenges such as the antigenic diversity of Plasmodium and its ability to manipulate immune memory. However, novel vaccine candidates, including RTS, S/AS01, R21/Matrix-M, and whole sporozoite-based vaccines, demonstrate varying degrees of efficacy, particularly in children. Advancements in systems immunology, adjuvant technologies, and structure-based antigen design offer new hope for a highly efficacious and durable malaria vaccine. Understanding the host-parasite immunological dialogue is crucial not only for vaccine design but also for the development of immune-based therapies to reduce disease burden and transmission. Keywords: Malaria Immunology, Host-Parasite Interaction, Immune Evasion Mechanisms, Plasmodium falciparum, Malaria Vaccine Development