Identification and Validation of Cyclic Peptides with Mucin-Selective, Location-Specific Binding in the Gastrointestinal Tract
Name
subramanian-et-al-2025-identification-and-validation-of-cyclic-peptides-with-mucin-selective-location-specific-binding.pdf
Description
Published version
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7.42 MB
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Adobe PDF
Checksum (MD5)
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Author(s)
Subramanian, Deepak A
Chin, Austin
Shi, Yunhua
Liu, Gary W
Langer, Robert
Traverso, Giovanni
Date Issued
April 11, 2025
Journal
ACS Nano
Publisher
American Chemical Society
Citation
Identification and Validation of Cyclic Peptides with Mucin-Selective, Location-Specific Binding in the Gastrointestinal Tract. Deepak A. Subramanian, Austin Chin, Yunhua Shi, Gary W. Liu, Robert Langer, and Giovanni Traverso. ACS Nano 2025 19 (15), 14693-14706.
Version
Final published version
Abstract
Oral drug delivery is a widely preferred method of drug administration due to its ease of use and convenience for patients. Localization of drug release in the gastrointestinal (GI) tract is important to treat localized diseases and maximize drug absorption. However, achieving drug localization in the dynamic GI tract is challenging. To address this challenge, we leveraged the geographic diversity of the GI tract by targeting its mucus layers, which coat the epithelial surfaces. These layers, composed of mucin glycoproteins, are synthesized with unique chemical compositions and expressed in different regions, making them ideal targets for drug localization. In this article, we identify cyclic peptides that bind selectively to MUC2 (in the intestines) and MUC5AC (in the stomach), serving as targeting ligands to these regions of the GI tract. We demonstrate the effectiveness of these peptides through in vitro, ex vivo, and in vivo experiments, showing that incorporating these targeting ligands can increase binding and selectivity 2-fold to the desired regions, thus potentially overcoming challenges with localizing drug distribution in oral delivery. These results indicate that cyclic peptides can be used to localize drug cargoes at certain sites in the body compared to free drugs.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Koch Institute for Integrative Cancer Research at MIT
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
10.1021/acsnano.4c13520
