Malaria Vaccine: Pfs25-Pvs25

Duffy, Patrick

Abstract

In collaboration with Drs. John Robbins and Rachel Schneerson at the Laboratory of Developmental and Molecular Immunology of the NICHD, we have developed a candidate conjugate vaccine that consists of Pfs25-Pfs25 conjugates. The immune sera induced by the conjugate vaccine displayed ability to block parasite development in mosquitoes. An Investigational New Drug Application was filed with FDA, intending a Phase 1 trial to test the safety, immunogenicity, and ex-vivo transmission blocking activity in humans. In response to FDAs comment, additional animal studies were conducted to evaluate the safety in animals.

Funding Agency

• Agency: National Institute of Health (NIH)
• Institute: National Institute of Allergy and Infectious Diseases (NIAID)
• Type: Investigator-Initiated Intramural Research Projects (ZIA)
• Project #: 1ZIAAI001007-05
• Application #: 8336229
• Support Year: 5
• Fiscal Year: 2011
• Total Cost: $353,966

Institution

• Name: National Institute of Allergy and Infectious Diseases

Publications

Sagara, Issaka; Healy, Sara A; Assadou, Mahamadoun H et al. (2018) Safety and immunogenicity of Pfs25H-EPA/Alhydrogel, a transmission-blocking vaccine against Plasmodium falciparum: a randomised, double-blind, comparator-controlled, dose-escalation study in healthy Malian adults. Lancet Infect Dis 18:969-982

Nixon, Christian P; Nixon, Christina E; Michelow, Ian C et al. (2018) Antibodies to PfsEGXP, An Early Gametocyte Enriched Phosphoprotein, Predict Decreased Plasmodium falciparum Gametocyte Density In Humans. J Infect Dis :

Assadou, Mahamadoun Hamady; Sagara, Issaka; Healy, Sara A et al. (2017) Malaria Infection and Gametocyte Carriage Rates in Preparation for Transmission Blocking Vaccine Trials in Bancoumana, Mali. Am J Trop Med Hyg 97:183-187

Coelho, Camila Henriques; Doritchamou, Justin Yai Alamou; Zaidi, Irfan et al. (2017) Advances in malaria vaccine development: report from the 2017 malaria vaccine symposium. NPJ Vaccines 2:34

Coulibaly, Mamadou B; Gabriel, Erin E; Sinaba, Youssouf et al. (2017) Optimizing Direct Membrane and Direct Skin Feeding Assays for Plasmodium falciparum Transmission-Blocking Vaccine Trials in Bancoumana, Mali. Am J Trop Med Hyg :

MacDonald, Nicholas J; Nguyen, Vu; Shimp, Richard et al. (2016) Structural and Immunological Characterization of Recombinant 6-Cysteine Domains of the Plasmodium falciparum Sexual Stage Protein Pfs230. J Biol Chem 291:19913-22

Hoffman, Stephen L; Vekemans, Johan; Richie, Thomas L et al. (2015) The march toward malaria vaccines. Vaccine 33 Suppl 4:D13-23

Davies, D Huw; Duffy, Patrick; Bodmer, Jean-Luc et al. (2015) Large screen approaches to identify novel malaria vaccine candidates. Vaccine 33:7496-505

Hoffman, Stephen L; Vekemans, Johan; Richie, Thomas L et al. (2015) The March Toward Malaria Vaccines. Am J Prev Med 49:S319-33

Wu, Yimin; Sinden, Robert E; Churcher, Thomas S et al. (2015) Development of malaria transmission-blocking vaccines: from concept to product. Adv Parasitol 89:109-52