@article{sarma_catella_san pedro_xiao_durmusoglu_menegatti_crook_magness_hall_2023, title={Design of 8-mer peptides that block Clostridioides difficile toxin A in intestinal cells}, volume={6}, ISSN={["2399-3642"]}, url={https://doi.org/10.1038/s42003-023-05242-x}, DOI={10.1038/s42003-023-05242-x}, abstractNote={Abstract}, number={1}, journal={COMMUNICATIONS BIOLOGY}, author={Sarma, Sudeep and Catella, Carly M. and San Pedro, Ellyce T. and Xiao, Xingqing and Durmusoglu, Deniz and Menegatti, Stefano and Crook, Nathan and Magness, Scott T. and Hall, Carol K.}, year={2023}, month={Aug} } @article{durmusoglu_catella_purnell_menegatti_crook_2021, title={Design and in situ biosynthesis of precision therapies against gastrointestinal pathogens}, volume={23}, ISSN={["2468-8673"]}, DOI={10.1016/j.cophys.2021.06.007}, abstractNote={Gastrointestinal pathogens employ a variety of mechanisms to damage host tissue, acquire nutrients, and evade treatment. To supplement broad-spectrum antimicrobials, there has been increasing interest in designing molecules that target specific taxa and virulence processes. Excitingly, these antivirulence therapies may be able to be synthesized by gut-resident microbes, thereby enabling delivery of these drugs directly to the spatial and temporal site of infection. In this review, we highlight recent progress in our understanding of small molecules that inhibit specific virulence mechanisms. We additionally discuss emerging methods to discover pathogen-specific and mechanism-specific peptides and small proteins. Finally, we cover recent demonstrations of probiotics engineered to produce antimicrobials in response to pathogen-specific cues in the gut. Collectively, these advances point to an emerging integrative approach to treatment of gastrointestinal diseases, comprising microbiologists, peptide chemists, and synthetic biologists.}, journal={CURRENT OPINION IN PHYSIOLOGY}, author={Durmusoglu, Deniz and Catella, Carly M. and Purnell, Ethan F. and Menegatti, Stefano and Crook, Nathan C.}, year={2021}, month={Oct} } @article{chu_prodromou_day_schneible_bacon_bowen_kilgore_catella_moore_mabe_et al._2021, title={Peptides and pseudopeptide ligands: a powerful toolbox for the affinity purification of current and next-generation biotherapeutics}, volume={1635}, ISSN={["1873-3778"]}, DOI={10.1016/j.chroma.2020.461632}, abstractNote={Following the consolidation of therapeutic proteins in the fight against cancer, autoimmune, and neurodegenerative diseases, recent advancements in biochemistry and biotechnology have introduced a host of next-generation biotherapeutics, such as CRISPR-Cas nucleases, stem and car-T cells, and viral vectors for gene therapy. With these drugs entering the clinical pipeline, a new challenge lies ahead: how to manufacture large quantities of high-purity biotherapeutics that meet the growing demand by clinics and biotech companies worldwide. The protein ligands employed by the industry are inadequate to confront this challenge: while featuring high binding affinity and selectivity, these ligands require laborious engineering and expensive manufacturing, are prone to biochemical degradation, and pose safety concerns related to their bacterial origin. Peptides and pseudopeptides make excellent candidates to form a new cohort of ligands for the purification of next-generation biotherapeutics. Peptide-based ligands feature excellent target biorecognition, low or no toxicity and immunogenicity, and can be manufactured affordably at large scale. This work presents a comprehensive and systematic review of the literature on peptide-based ligands and their use in the affinity purification of established and upcoming biological drugs. A comparative analysis is first presented on peptide engineering principles, the development of ligands targeting different biomolecular targets, and the promises and challenges connected to the industrial implementation of peptide ligands. The reviewed literature is organized in (i) conventional (α-)peptides targeting antibodies and other therapeutic proteins, gene therapy products, and therapeutic cells; (ii) cyclic peptides and pseudo-peptides for protein purification and capture of viral and bacterial pathogens; and (iii) the forefront of peptide mimetics, such as β-/γ-peptides, peptoids, foldamers, and stimuli-responsive peptides for advanced processing of biologics.}, journal={JOURNAL OF CHROMATOGRAPHY A}, author={Chu, Wenning and Prodromou, Raphael and Day, Kevin N. and Schneible, John D. and Bacon, Kaitlyn B. and Bowen, John D. and Kilgore, Ryan E. and Catella, Carly M. and Moore, Brandyn D. and Mabe, Matthew D. and et al.}, year={2021}, month={Jan} }