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Li Y, Yang KD, Kong DC, Li XM, Duan HY, Ye JF. Harnessing filamentous phages for enhanced stroke recovery. Front Immunol 2024; 14:1343788. [PMID: 38299142 PMCID: PMC10829096 DOI: 10.3389/fimmu.2023.1343788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/27/2023] [Indexed: 02/02/2024] Open
Abstract
Stroke poses a critical global health challenge, leading to substantial morbidity and mortality. Existing treatments often miss vital timeframes and encounter limitations due to adverse effects, prompting the pursuit of innovative approaches to restore compromised brain function. This review explores the potential of filamentous phages in enhancing stroke recovery. Initially antimicrobial-centric, bacteriophage therapy has evolved into a regenerative solution. We explore the diverse role of filamentous phages in post-stroke neurological restoration, emphasizing their ability to integrate peptides into phage coat proteins, thereby facilitating recovery. Experimental evidence supports their efficacy in alleviating post-stroke complications, immune modulation, and tissue regeneration. However, rigorous clinical validation is essential to address challenges like dosing and administration routes. Additionally, genetic modification enhances their potential as injectable biomaterials for complex brain tissue issues. This review emphasizes innovative strategies and the capacity of filamentous phages to contribute to enhanced stroke recovery, as opposed to serving as standalone treatment, particularly in addressing stroke-induced brain tissue damage.
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Affiliation(s)
- Yang Li
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
- School of Nursing, Jilin University, Changchun, China
| | - Kai-di Yang
- School of Nursing, Jilin University, Changchun, China
| | - De-cai Kong
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Xiao-meng Li
- School of Nursing, Jilin University, Changchun, China
| | - Hao-yu Duan
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Jun-feng Ye
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
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Li K, Tokareva OS, Thomson TM, Wahl SCT, Travaline TL, Ramirez JD, Choudary SK, Agarwal S, Walkup WG, Olsen TJ, Brennan MJ, Verdine GL, McGee JH. De novo mapping of α-helix recognition sites on protein surfaces using unbiased libraries. Proc Natl Acad Sci U S A 2022; 119:e2210435119. [PMID: 36534810 PMCID: PMC9907135 DOI: 10.1073/pnas.2210435119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 10/21/2022] [Indexed: 12/24/2022] Open
Abstract
The α-helix is one of the most common protein surface recognition motifs found in nature, and its unique amide-cloaking properties also enable α-helical polypeptide motifs to exist in membranes. Together, these properties have inspired the development of α-helically constrained (Helicon) therapeutics that can enter cells and bind targets that have been considered "undruggable", such as protein-protein interactions. To date, no general method for discovering α-helical binders to proteins has been reported, limiting Helicon drug discovery to only those proteins with previously characterized α-helix recognition sites, and restricting the starting chemical matter to those known α-helical binders. Here, we report a general and rapid screening method to empirically map the α-helix binding sites on a broad range of target proteins in parallel using large, unbiased Helicon phage display libraries and next-generation sequencing. We apply this method to screen six structurally diverse protein domains, only one of which had been previously reported to bind isolated α-helical peptides, discovering 20 families that collectively comprise several hundred individual Helicons. Analysis of 14 X-ray cocrystal structures reveals at least nine distinct α-helix recognition sites across these six proteins, and biochemical and biophysical studies show that these Helicons can block protein-protein interactions, inhibit enzymatic activity, induce conformational rearrangements, and cause protein dimerization. We anticipate that this method will prove broadly useful for the study of protein recognition and for the development of both biochemical tools and therapeutics for traditionally challenging protein targets.
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Affiliation(s)
- Kunhua Li
- FOG Pharmaceuticals Inc., Cambridge, MA02140
| | | | | | | | | | | | | | | | | | | | | | - Gregory L. Verdine
- FOG Pharmaceuticals Inc., Cambridge, MA02140
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA02138
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA02138
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA02138
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Mihara K, Nakajima N, Fujii I, Fujiwara D. Generation of inhibitory peptides for
IKKε
from a kinase‐focused phage library of helix‐loop‐helix peptides. Pept Sci (Hoboken) 2021. [DOI: 10.1002/pep2.24253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kousuke Mihara
- Department of Biological Science, Graduate School of Science Osaka Prefecture University Osaka Japan
| | - Natsumi Nakajima
- Department of Biological Science, Graduate School of Science Osaka Prefecture University Osaka Japan
| | - Ikuo Fujii
- Department of Biological Science, Graduate School of Science Osaka Prefecture University Osaka Japan
| | - Daisuke Fujiwara
- Department of Biological Science, Graduate School of Science Osaka Prefecture University Osaka Japan
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