Related Experiment Video
Updated: Jul 17, 2026
Analysis of Single-cell Gene Transcription by RNA Fluorescent In Situ Hybridization FISH
Published on: October 7, 2012
Interaction Analysis of a Plasmodium falciparum PHISTa-like Protein and PfEMP1 Proteins
Baoling Yang1,2,3, Xiaofeng Wang4, Ning Jiang1,3
1Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, Key Laboratory of Zoonosis, Shenyang Agricultural University, Shenyang, China.
Abstract:
Plasmodium falciparum extensively remodels host cells by translocating numerous proteins into the cytoplasm of red blood cells (RBCs) after invasion. Among these exported proteins, members of the Plasmodium helical interspersed subtelomeric (PHIST) family are crucial for host cell remodeling and host-parasite interactions, and thereby contribute to malaria pathogenesis. Herein, we explored the function of PF3D7_1372300, a member of the PHIST/PHISTa-like subfamily. PF3D7_1372300 was highly transcribed and expressed during the blood stage of P. falciparum, and distributed throughout RBCs, but most abundant at the erythrocyte membrane. Specific interaction of PF3D7_1372300 with the cytoplasmic tail of P. falciparum erythrocyte membrane protein 1 (PfEMP1) was revealed by immunofluorescence assay, in vitro intermolecular interaction assays. The interaction sites of PF3D7_1372300 with PfEMP1 ATS domain were found involved more than 30 amino acids (aa) at several positions. The findings deepen our understanding of host-parasite interactions and malaria pathogenesis.
Insights
This study reveals how Plasmodium falciparum protein PF3D7_1372300 interacts with PfEMP1, crucial for malaria pathogenesis. Understanding this host-parasite interaction aids in developing new malaria treatments.
Area of Science:
- Malariology
- Molecular Parasitology
- Cell Biology
Background:
- Plasmodium falciparum extensively remodels host red blood cells (RBCs) by exporting proteins.
- The Plasmodium helical interspersed subtelomeric (PHIST) family proteins are vital for host cell remodeling and malaria pathogenesis.
Purpose of the Study:
- To investigate the function of PF3D7_1372300, a PHIST/PHISTa-like subfamily member.
- To elucidate the interaction between PF3D7_1372300 and Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1).
Main Methods:
- Analysis of PF3D7_1372300 transcription and expression during the blood stage.
- Localization studies of PF3D7_1372300 within infected RBCs.
- Immunofluorescence assays and in vitro intermolecular interaction assays to determine PfEMP1 interaction.
Main Results:
- PF3D7_1372300 is highly transcribed and expressed in the blood stage, localizing to the erythrocyte membrane.
- Specific interaction between PF3D7_1372300 and the cytoplasmic tail of PfEMP1 was confirmed.
- Interaction sites involved over 30 amino acids within the PfEMP1 ATS domain.
Conclusions:
- PF3D7_1372300 plays a significant role in host-parasite interactions by binding to PfEMP1.
- This interaction is a key factor in malaria pathogenesis, offering insights for therapeutic strategies.
More Related Videos
09:23Plasmodium falciparum Gametocyte Culture and Mosquito Infection Through Artificial Membrane Feeding
Published on: July 3, 2020
09:13Author Spotlight: Identifying Compensatory Pathways in Malaria Parasites Containing Hypomorphic Allele of Essential Protein Kinases
Published on: November 22, 2024
