Protozoology


            Fig.1 Gliding motility of merozoites., the deadliest malaria parasite species(arrow),was released from an infected RBC (0 s), then adhered to the RBC
               in a gliding motion(5 and 10 s), deformed the cell(15 s) and invaded the cell(30 s). A longtime mystery of whether malaria merozoite glides
               or not was finally solved by us (Yahata et al., 2021).



            Fig.2 Cytoadherence of P. knowlesi-infected RBCs. P. knowlesi-infected RBCs with increased cytoadhesion activity(arrows) were selected by repeated panning
               against human umbilical vein endot helial cells (HUVECs), and the responsible ligand, SICA-HUVEC, was identified(Chuang et al., 2022).

 

Members

Professor
Osamu Kaneko
Assistant Professor
Shinya Miyazaki
Assistant Professor
Taeko Naruse
Assistant Professor
Yukiko Miyazaki
Research Fellow
Ben-Yeddy Abel Chitama
Research Fellow
Chuang Huai
Research Fellow
Tomoyo Sakata
Visiting Researcher
Haruki Uemura
Assistant
Miki Kinoshita
Assistant
Momoko Sakura
Assistant
Rikka Iwami
Assistant
Reiko Tanaka
Assistant
Emi Yoshitake
Graduate Student
Maya Suzuki
Graduate Student
Too Edwin Kimeli
Graduate Student
Thant Zin Tun
Graduate Student
Bitshi Ampas Mimie
Graduate Student
Ezenwanne Chukwuma Stephen
Graduate Student
Sittinont Chainarin
Medical Student
Miyu Uchida

Activities

Malaria is responsible for a considerable burden of death and disease in large areas of the tropical and sub-tropical world. Unfortunately, those countries hardest hit by the disease are often amongst the poorest. Despite continuing efforts, the approved vaccine against the disease is not highly effective. To design and implement effective disease intervention strategies, one of the critical priorities in malaria research is strengthening our understanding of the basic biology of the parasite. We are investigating some fundamental aspects of the parasite’s life cycle with a specific focus on two major virulent- related factors; the molecular mechanism behind the erythrocyte invasion and the cytoadherence of parasite-infected erythrocytes. We utilize a variety of malaria parasites, including human-infecting Plasmodium falciparum, the rodent malaria parasite Plasmodium yoelii, and Plasmodium knowlesi, a causative agent of zoonotic human malaria. To expand a platform for basic and clinical malaria research, we are investigating the molecular evolution and drug resistance of P. falciparum in endemic countries, malaria vaccine development, development of diagnostic and control methods for zoonotic malaria, and mosquito and liver stages of human infectious malaria parasites.

Recent main research achievement

  1. Christensen et al. Antimicrob Agents Chemother 2024; 68(5): e0028024.
  2. Poofery et al. Sci Rep 2023; 13: 20258.
  3. Ward et al. J Infect Dis 2023; 227(10): 1121-1126.
  4. Otsuki H et al. Biomolecules 2023; 13(3): 458.
  5. Nguyen et al. Sci Rep 2023; 13: 145.

Achievement list