In a news release, ProMIS Neurosciences Inc. (PMN:TSX; ARFXF:OTCQB) announced it plans to develop and test an Alzheimer's disease vaccine that incorporates the company's proprietary peptide antigens.
"A vaccine capable of inducing an effective antibody response against amyloid-beta toxic oligomers (ABOs) could be administered prophylactically to at-risk individuals to prevent development of symptomatic disease," the release noted. Toxic oligomers have been implicated in the development of neurodegenerative diseases, including Alzheimer's, the company noted.
Also, ProMIS indicated that the vaccine could be used to inhibit disease progression in people with an Alzheimer's diagnosis.
The University of Saskatchewan's Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac) will start the vaccine development process by generating multivalent vaccine constructs based on ProMIS peptides linked to a carrier protein. It will incorporate an adjuvant to maximally induce a protective antibody response to ABOs. VIDO-InterVac is a global leader in vaccine research, development and commercialization.
Previously, ProMIS reported that it had identified in a proof-of-concept study six different peptide epitopes that were selectively exposed on toxic ABOs. When mice were injected with each epitope, they produced protective antibodies against ABOs with no occurrence of adverse binding to amyloid-beta monomers or fibrils.
In addition, ProMIS noted that it also conducted a successful proof-of-concept vaccination study using one of the peptide epitopes in a mouse model of Alzheimer's disease. That showed the peptide epitope protected neurons and improved cognitive deficits.
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