Evolved botulinum neurotoxins and uses thereof
AssigneesPresident and Fellows of Harvard College, The Broad Institute, Inc.
InventorsDavid R. Liu, Travis R. Blum
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Abstract
The disclosure provides amino acid sequence variants of Botulinum neurotoxin F (BoNT F) proteases that cleave SNARE proteins (e.g., VAMP1, VAMP7, etc.) and methods of evolving the same. In some embodiments, proteases described by the disclosure are useful for cleaving proteins found in a cell, that is in an intracellular environment. In some embodiments, proteases described by the disclosure are useful for treating diseases associated with increased or aberrant VAMP7 expression or activity, for example, cancer, transplantation rejection, graft-versus-host disease, and neurological disorders. Some aspects of this disclosure provide methods for generating BoNT protease variants by continuous directed evolution.
Claims20
A protein comprising an amino acid sequence that is at least 90% identical to SEQ ID NO.:
- 6, wherein the protein comprises at least three amino acid mutations selected from the group consisting of R303H, T335S, S350G, I354V, S166Y, S167I, M174T, D175G, E200K, K31N, V106A, Y113D, E200G, R240L, V131G, S141T, N99S, R240C, F360L, G177D, N184H, R240F, Y113S, V131F, N184K, S69L, Y72H, K96N, N184T, S148N, I150V, A158P, L381M, N396H, P410L, Y372H, I412N, D414G, D418Y, Y372N, E423K, Y244C, V193M, Y372P, N165S, S224I, A281V, E66D, R41H, A232S, and V106A.
Dependencies are inferred from the claim text.