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- W2025898570 abstract "The modular four domain structure of clostridial neurotoxins supports the idea to reassemble individual domains from tetanus and botulinum neurotoxins to generate novel molecules with altered pharmacological properties. To treat disorders of the central nervous system drug transporter molecules based on catalytically inactive clostridial neurotoxins circumventing the passage of the blood–brain-barrier are desired. Such molecules can be produced based on the highly effective botulinum neurotoxin serotype A incorporating the retrograde axonal sorting property of tetanus neurotoxin which is supposed to be encoded within its C-terminal cell binding domain HC. The corresponding exchange of the tetanus neurotoxin HC-fragment in botulinum neurotoxin A yielded the novel hybrid molecule AATT which displayed decreased potency at the neuromuscular junction like tetanus neurotoxin but exerted equal activity in cortical neurons compared to botulinum neurotoxin A wild-type. Minimizing the tetanus neurotoxin cell binding domain to its N- or C-terminal half drastically reduced the potencies of AATA and AAAT in cortical neurons indicating that the structural motif mediating sorting of tetanus neurotoxin is predominantly encoded within the entire HC-fragment. However, the reciprocal exchange resulted in TTAA which showed a similar potency as tetanus neurotoxin at the neuromuscular junction indicating that the tetanus neurotoxin portion prevents a high potency as observed for botulinum neurotoxins. In conclusion, clostridial neurotoxin based inactivated drug transporter for targeting central neurons should contain the cell binding domain of tetanus neurotoxin to exert its tropism for the central nervous system." @default.
- W2025898570 created "2016-06-24" @default.
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- W2025898570 date "2013-12-01" @default.
- W2025898570 modified "2023-10-17" @default.
- W2025898570 title "Exchanging the minimal cell binding fragments of tetanus neurotoxin in botulinum neurotoxin A and B impacts their toxicity at the neuromuscular junction and central neurons" @default.
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- W2025898570 doi "https://doi.org/10.1016/j.toxicon.2013.06.010" @default.
- W2025898570 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23817019" @default.
- W2025898570 hasPublicationYear "2013" @default.
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