In Vitro Cultivation of Malaria Parasites

In vitro cultivation of malaria parasites has underpinned fundamental advances in parasite biology, drug discovery and vaccine development. Since the first continuous culture of Plasmodium falciparum was achieved in the 1970s, refinements in medium composition, gas conditions and host cell preparation have enabled routine propagation of this species. Culturing P. falciparum has revealed critical insights into erythrocyte invasion, antigenic variation and drug resistance mechanisms. In contrast, long-term cultivation of Plasmodium vivax remains elusive owing to its strict preference for immature reticulocytes, complex host cell remodelling and sensitivity to oxygen tension. Recent efforts have focused on optimising reticulocyte sourcing, supplementing culture media with defined growth factors and engineering microenvironments that mimic bone marrow niches. Parallel genomic studies of clinical isolates maintained in vitro have elucidated the genetic shifts associated with laboratory adaptation, informing both the fidelity of experimental models and the selection of target genes for functional analysis. Together, these developments have broadened our capacity to dissect species-specific biology, evaluate therapeutics in human-relevant systems and guide strategies towards robust culture of fastidious malaria parasites.

Research from Nature Portfolio

Recent studies have advanced both technological platforms and genetic understanding of culture adaptation. A multi-organ microfluidic model has been devised to sustain P. falciparum infection in recirculating human erythrocytes alongside hepatocytes, endothelial cells and splenocytes for up to seven days under serum-free conditions. This “malaria-on-a-chip” system differentiated drug responses of chloroquine-sensitive and ‑resistant strains and concurrently assessed off-target toxicity, demonstrating a scalable human-relevant assay for antimalarial development. In parallel, whole-genome analysis of P. falciparum clinical isolates during initial culture adaptation has identified convergent loss-of-function mutations in master regulator genes, notably ApiAP2 transcription factors and EPAC. These findings elucidate the genetic pathways underpinning laboratory adaptation, guiding the design of next-generation culture models and targeted gene disruptions to support cultivation of other Plasmodium species.

In Vitro Cultivation of Malaria Parasites publication trend

The graph below shows the total number of articles in in vitro cultivation of malaria parasites across all publications each year (not limited to Nature Index journals).

Technical terms

In vitro cultivation: Maintenance and growth of organisms outside a living host, in a controlled laboratory environment.

Reticulocyte: An immature red blood cell containing residual RNA, preferred by certain malaria species for invasion.

Microfluidic platform: A device that manipulates small fluid volumes in networks of channels to simulate physiological conditions.

Loss-of-function mutation: A genetic alteration resulting in reduced or abolished activity of the encoded protein.

ApiAP2 transcription factor: A family of parasite-specific regulatory proteins that control gene expression during the Plasmodium lifecycle.

De novo variant: A novel genetic change that arises spontaneously rather than being inherited from parent strains.

References

1. Development of a human malaria-on-a-chip disease model for drug efficacy and off-target toxicity evaluation. Scientific Reports (2023).
2. Culture adaptation of malaria parasites selects for convergent loss-of-function mutants. Scientific Reports (2017).
3. Genomic variation during culture adaptation of genetically complex Plasmodium falciparum clinical isolates. Microbial Genomics (2023).
4. Culture and transfection: Two major bottlenecks in understanding Plasmodium vivax biology. Frontiers in Microbiology (2023).
5. Plasmodium vivax in vitro continuous culture: the spoke in the wheel. Malaria Journal (2018).