Drug intelligence / Profile preview

H5 VLP vaccine

Development stage
Unknown
Lead developer
Medicago
Modality
Split/Subunit Vaccines → Inactivated Vaccines → Prophylactic Vaccines → Vaccines & Immunotherapeutics, Cancer Vaccines → Therapeutic Vaccines → Vaccines & Immunotherapeutics, Recombinant Proteins and Enzymes, Recombinant Protein Vaccines → Recombinant Vaccines → Prophylactic Vaccines → Vaccines & Immunotherapeutics
Administration
Intramuscular, Intradermal, Microneedle/skin Delivery
01

Overview

The H5 VLP vaccine is a plant-derived virus-like particle (VLP) influenza A (H5N1) pandemic and avian influenza candidate. It is produced by expressing the hemagglutinin (HA) gene from the target strain in *Nicotiana benthamiana* plants using transient expression technology. The resulting non-infectious particles mimic the structure of native viruses but lack viral genetic material. This design aims to stimulate robust immune responses without risk of infection. The primary mechanism is immunostimulation via presentation of HA antigens to elicit neutralizing antibodies and cellular immunity against diverse clades of highly pathogenic avian influenza (HPAI) H5 viruses[3][6][4]. Developed primarily by Medicago and tested with adjuvants such as alum for enhanced immunogenicity[6], it has been evaluated in both preclinical animal models and early-phase human clinical trials for safety and efficacy.

Other names
Plant-made H5 VLP influenza vaccinePlant-based H5 virus-like particle (VLP) vaccineOne-dose H5N1 VLP vaccinePandemic flu vaccine - Medicago
02

Targets

N1 NA (Influenza A neuraminidase N1)

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