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| Status |
Public on Aug 03, 2021 |
| Title |
A transcriptional repressor programs gametocytogenesis in human malaria parasites (PfAP2-G5) [ChIP-Seq TF] |
| Organism |
Plasmodium falciparum |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
|
| Summary |
Gametocytogenesis, the process by which malaria parasites produce sexual forms that can infect mosquitoes, is essential for the transmission of malaria. A transcriptional switch of the pfap2-g gene triggers sexual commitment, but how the complex multi-step process is precisely programed remains largely unknown. Here, by systematic functional screening of a panel of ApiAP2 transcription factors, we identify six new apiAP2 members associated with gametocytogenesis in Plasmodium falciparum. Among these, PfAP2-G5 (PF3D7_1139300) was found to be indispensable for gametocytogenesis. This factor suppresses the transcriptional activity of the pfap2-g gene via binding to both the upstream region and exonic gene body, the latter is linked to the maintenance of local heterochromatin structure, thereby preventing initiation of sexual commitment. Removal of this repressive effect through pfap2-g5 knockout disrupts the asexual replication cycle and promotes sexual commitment accompanied by upregulation of pfap2-g expression. However, the gametocytes produced fail to mature fully. Further analyses show that PfAP2-G5 is essential for gametocyte maturation, and causes the down-regulation of pfap2-g and a set of early gametocyte genes activated by PfAP2-G prior to gametocyte development. Collectively, our findings reveal a regulation cascade of gametocyte production in malaria parasites, and provide a new target for transmission blocking interventions.
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| Overall design |
The PfAP2-G5-GFP::WT line at trophozoite (30-40hpi) and G0-G1 gametocyte (D5) stages, the PfAP2-G-GFP::WT and PfAP2-G-GFP::pfap2-g5_trun lines at trophozoite (30-40hpi) stage were harvested to perform ChIP assay using antibody against GFP or IgG. There are two biological replicates for each of the parasite lines. The input and IgG material served as the control.
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| Contributor(s) |
Shen S, Shang X, Jiang C, Zhang Q |
| Citation(s) |
34365503 |
| Submission date |
May 03, 2020 |
| Last update date |
Sep 15, 2021 |
| Contact name |
Shijun Shen |
| E-mail(s) |
xiaoshen19930901@163.com
|
| Phone |
+86-21-13795384821
|
| Organization name |
Tongji University
|
| Department |
Bioninformatics
|
| Lab |
Jiang Lab
|
| Street address |
1239 Siping Road, Shanghai, P.R. China
|
| City |
Shanghai |
| State/province |
Shanghai |
| ZIP/Postal code |
200092 |
| Country |
China |
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| Platforms (1) |
| GPL26835 |
HiSeq X Ten (Plasmodium falciparum) |
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| Samples (18)
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| This SubSeries is part of SuperSeries: |
| GSE149774 |
A transcriptional repressor programs gametocytogenesis in human malaria parasites (PfAP2-G5) |
|
| Relations |
| BioProject |
PRJNA630084 |
| SRA |
SRP259977 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE149773_PfAP2-G5_GFP_WT_D5_rep1_TF_ratio_IgG_normalized.bw |
16.8 Mb |
(ftp)(http) |
BW |
| GSE149773_PfAP2-G5_GFP_WT_D5_rep1_peak_summits_genebody.bed.gz |
7.4 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_D5_rep1_peak_summits_upstream.bed.gz |
13.1 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_D5_rep2_TF_ratio_IgG_normalized.bw |
16.7 Mb |
(ftp)(http) |
BW |
| GSE149773_PfAP2-G5_GFP_WT_D5_rep2_peak_summits_genebody.bed.gz |
7.4 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_D5_rep2_peak_summits_upstream.bed.gz |
13.4 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_T_rep1_TF_ratio_IgG_normalized.bw |
16.5 Mb |
(ftp)(http) |
BW |
| GSE149773_PfAP2-G5_GFP_WT_T_rep1_peak_summits_genebody.bed.gz |
34.1 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_T_rep1_peak_summits_upstream.bed.gz |
14.8 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_T_rep2_TF_ratio_IgG_normalized.bw |
16.3 Mb |
(ftp)(http) |
BW |
| GSE149773_PfAP2-G5_GFP_WT_T_rep2_peak_summits_genebody.bed.gz |
36.4 Kb |
(ftp)(http) |
BED |
| GSE149773_PfAP2-G5_GFP_WT_T_rep2_peak_summits_upstream.bed.gz |
15.1 Kb |
(ftp)(http) |
BED |
| GSE149773_RAW.tar |
258.1 Mb |
(http)(custom) |
TAR (of BW) |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data provided as supplementary file |
| Processed data are available on Series record |
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