A computational model of gene expression reveals early transcriptional events at the subtelomeric regions of the malaria parasite, Plasmodium falciparum.

ABSTRACT:

Background

The malaria parasite, Plasmodium falciparum, replicates asexually in a well-defined infection cycle within human erythrocytes (red blood cells). The intra-erythrocytic developmental cycle (IDC) proceeds with a 48 hour periodicity.

Results

Based on available malaria microarray data, which monitored gene expression over one complete IDC in one-hour time intervals, we built a mathematical model of the IDC using a circular variant of non-linear principal component analysis. This model enables us to identify rates of expression change within the data and reveals early transcriptional events at the subtelomeres of the parasite's nuclear chromosomes.

Conclusion

A delay between subtelomeric and central gene activities suggests that key events of the IDC are initiat

SUBMITTER: Scholz M 

PROVIDER: S-EPMC2441474 | biostudies-literature | 2008

REPOSITORIES: biostudies-literature