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Huang, Xiu‐Song; Yang, Li‐Ting; Yang, Ke; Zhou, Hang; Abudureheman, Tuersunayi; Zheng, Wei‐Wei; Chen, Kai‐Ming; Duan, Cai‐Wen
Protein science, April 2024, 2024-Apr, 2024-04-00, 20240401, Letnik: 33, Številka: 4Journal Article
Antibody (Ab)‐based drugs have been widely used in targeted therapies and immunotherapies, leading to significant improvements in tumor therapy. However, the failure of Ab therapy due to the loss of target antigens or Ab modifications that affect its function limits its application. In this study, we expanded the application of antibodies (Abs) by constructing a fusion protein as a versatile tool for Ab‐based target cell detection, delivery, and therapy. We first constructed a SpaC Catcher (SpaCC for short) fusion protein that included the C domains of Staphylococcal protein A (SpaC) and the SpyCatcher. SpaCC conjugated with SpyTag‐X (S‐X) to form the SpaCC‐S‐X complex, which binds non‐covalently to an Ab to form the Ab‐SpaCC‐S‐X protein complex. The “X” can be a variety of small molecules such as fluoresceins, cell‐penetrating peptide TAT, Monomethyl auristatin E (MMAE), and DNA. We found that Ab‐SpaCC‐S‐FITC(−TAT) could be used for target cell detection and delivery. Besides, we synthesized the Ab‐SpaCC‐SN3‐MMAE complex by linking Ab with MMAE by SpaCC, which improved the cytotoxicity of small molecule toxins. Moreover, we constructed an Ab‐DNA complex by conjugating SpaCC with the aptamer (Ap) and found that Ab‐SpaCC‐SN3‐Ap boosted the tumor‐killing function of T‐cells by retargeting tumor cells. Thus, we developed a multifunctional tool that could be used for targeted therapies and immunotherapies, providing a cheap and convenient novel drug development strategy.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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