Engineered Botulinum Neurotoxins for Novel Biomedical Applications
A special issue of Toxins (ISSN 2072-6651). This special issue belongs to the section "Bacterial Toxins".
Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 2458
Special Issue Editors
Interests: botulinum neurotoxins; ricin toxin; marine toxins; vaccine design and assessment; select agent regulatory guidelines; dual use research of concern
Special Issue Information
Dear Colleagues,
Botulinum neurotoxins (BoNTs) are some of the most potent known neurotoxins and the causative agents of the neuroparalytic disease botulism. The BoNTs share a unique, common modular structure consisting of three functional domains that facilitate the presynaptic binding, neuronal uptake, intracellular delivery, and catalytic activity of the toxin. The receptor-binding domain (RBD) binds ectoreceptors on peripheral cholinergic neurons and is endocytosed within early endocytotic vesicles. Within the endosome, the BoNTs are believed to undergo a conformational change allowing the translocation domain (HN) to form a transmembrane pore through which the light chain (LC) is extruded into the cytosol. Once in the cytosol, the LC cleaves SNARE proteins critical for the vesicular trafficking of neurotransmitters, eliciting the descending, bilateral paralysis that is a hallmark of botulism. The unique and well-characterized modular functions of the three BoNT domains makes the toxin amenable to modifications for an array of biomedical applications, including atoxic forms for vaccine development, LCs with modified SNARE targets, enhanced LC activity and duration to extend therapeutic applications, and engineered RBDs to target alternative cellular targets for the treatment of hypersecretion disorders. Accompanying these innovations are the requirement to address regulatory and safety requirements as well as adhere to dual use research of concern (DURC) policies for the safe application of these powerful engineered BoNT drugs in new medical indications. Review and research articles about the potential and actual production and testing of engineered BoNTs are welcome. Furthermore, articles describing the regulatory, safety, and DURC concerns associated with the design, production, and testing of these modified proteins will also be accepted. We look forward to your response.
Dr. Robert P. Webb
Dr. Patrick Michael McNutt
Guest Editors
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Keywords
- BoNTs
- botulism
- botulinum toxins
- neurotoxins
- engineered BoNTs
- modified targeting
- chimeric BoNTs
- novel therapeutics