Niraj Harish Tolia, Ph.D.

Niraj Harish Tolia, Ph.D.

Credit: NIAID
Senior Investigator
Chief, Host-Pathogen Interactions and Structural Vaccinology Section
Laboratory of Malaria Immunology and Vaccinology
Division of Intramural Research
National Institute of Allergy and Infectious Disease
National Institutes of Health

Major Areas of Research

  • Host-pathogen interactions: structure, function and mechanism
  • Mechanisms of protective antibody neutralization
  • Structural vaccinology for malaria

Program Description

The Host-Pathogen Interactions and Structural Vaccinology section study the pathogenesis of infectious disease. We use the tools of structural biology, biochemistry, biophysics, immunology, and microbiology to examine proteins and protein complexes associated with pathogenesis. One major focus is to define the molecular mechanisms required for the pathogenesis of malaria. Malaria affects a third of the world`s population, leads to 200-300 million cases per year, and results in approximately half a million deaths annually. A majority of fatalities are in children under the age of five.

We pursue three areas of research:

  1. Host-pathogen interactions
    Malaria parasites must interact with the host for survival. We aim to uncover and exploit these interactions to prevent disease.
  2. Neutralizing Antibodies
    Antibodies play key roles in protection against infectious disease. We aim to determine the mechanisms of productive antibody neutralization of parasites.
  3. Structural vaccinology for malaria
    Producing antigens that focus the immune response to protective epitopes is critical for future vaccines. We aim to design and engineer novel antigens that will lead to protection.

Biography

Dr. Tolia became the Chief of the Host-Pathogen Interactions and Structural Vaccinology section in the Laboratory of Malaria Immunology and Vaccinology in May 2018. He is a tenured Senior Investigator in the Division of Intramural Research, NIAID. He received his B.Sc from Imperial College, and his Ph.D. from the Cold Spring Harbor Laboratory School of Biological Sciences as a Leslie Quick Jr. Fellow. Dr. Tolia began his independent career as an Assistant Professor of Molecular Microbiology, and an Assistant Professor of Biochemistry and Molecular Biophysics at Washington University School of Medicine in November 2007. He was the recipient of an Investigator in the Pathogenesis of Infectious Disease Award from the Burroughs Wellcome Fund and his research was supported by grants from the National Institutes of Health, the Edward Mallinckrodt, Jr. Foundation, the American Heart Association, the W.M. Keck Foundation and the Children’s Discovery Institute.

The Tolia laboratory has pioneered the structural and biophysical studies of host-pathogen interactions, antibody neutralization and immunogen design for malaria. A major goal is to define how processes required for malaria parasite survival are mediated and can be exploited for preventative, therapeutic and diagnostic purposes. This work has direct implications for drug and vaccine development. His laboratory uses the tools of microbiology, cell biology, biochemistry, biophysics and structural biology to study proteins and complexes.

Research Group

Thayne Dickey, Ph.D. – Staff Scientist
Dashuang Shi, Ph.D. – Staff Scientist
Wai Kwan Tang, Ph.D. – Staff Scientist
Nichole Salinas – Laboratory Manager
Hirdesh Kumar, Ph.D. – Visiting Fellow
Rui Ma, Ph.D. – Visiting Fellow
Kun Hyoe Park, Ph.D. – Visiting Fellow
Palak Patel, Ph.D. – Visiting Fellow
Brian Nguyen – Postbac IRTA
Niharika Shukla – Postbac IRTA

Selected Publications

Ma R, Lian T, Huang R, Renn JP, Petersen JD, Zimmerberg J, Duffy PE, Tolia NH. “Structural basis for placental malaria mediated by Plasmodium falciparum VAR2CSA” Nature Microbiology (2021) Jan 15. doi: 10.1038/s41564-020-00858-9. PMID:33452495

Urusova D, Carias L, Huang Y, Nicolete VC, Popovici J, Roesch C, Salinas ND, Witkowski B, Ferreira MU, Adams JH, Gross ML, King CL, Tolia NH. “Structural basis for neutralization of P. vivax by naturally-acquired human antibodies that target the Duffy binding protein” Nature Microbiology (2019) May 27. doi: 10.1038/s41564-019-0461-2. PMID:31133752

Jimah JJ, Salinas ND, Sala-Rabanal M, Jones NG, Sibley LD, Nichols C, Schlesinger P, Tolia NH. “Malaria parasite CelTOS targets the inner leaflet of cell membranes for pore-dependent disruption” Elife (2016) Dec 1;5. pii: e20621. doi: 10.7554/eLife.20621 PMID:27906127

Chen E, Salinas ND, Huang Y, Ntumngia F, Plasencia MD, Gross ML, Adams JH, Tolia NH. “Broadly neutralizing epitopes in the Plasmodium vivax vaccine candidate Duffy Binding Protein” Proceedings of the National Academy of Sciences USA (2016) May 31; 113(22):6277-82. PMID:27194724

Chen E., Paing MM, Salinas ND, Sim BK, Tolia NH. “Structural and functional basis for inhibition of erythrocyte invasion by antibodies that target Plasmodium falciparum EBA-175” PLoS Pathogens (2013) 9(5): e1003390. doi:10.1371/journal.ppat.1003390. PMID:23717209

Batchelor JD, Zahm JA, Tolia NH. “Dimerization of Plasmodium vivax DBP is induced upon receptor binding and drives recognition of DARC” Nature Structural & Molecular Biology (2011) Jul 10;18(8):908-14. PMID:21743458

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