Transient Mild Photothermia Improves Therapeutic Performance of Oral Nanomedicines with Enhanced Accumulation in the Colitis Mucosa

last updated: 2024-04-19
TitleTransient Mild Photothermia Improves Therapeutic Performance of Oral Nanomedicines with Enhanced Accumulation in the Colitis Mucosa
Publication TypePapers in Scientific Journals
Year of Publication2024
AuthorsMa Y., Gou S., Zhu Z., Sun J., Shahbazi M. - A., Si T., Xu C., Ru J., Shi X., Reis R. L., Kundu S. C., Ke B., Nie G., and Xiao B.
Abstract

The treatment outcomes of oral medications against ulcerative colitis (UC) have long been restricted by low drug accumulation in the colitis mucosa and subsequent unsatisfactory therapeutic efficacy. Here, high-performance pluronic F127 (P127)-modified gold shell (AuS)-polymeric core nanotherapeutics loading with curcumin (CUR) is constructed. Under near-infrared irradiation, the resultant P127-AuS@CURs generate transient mild photothermia (TMP; ≈42 °C, 10 min), which facilitates their penetration through colonic mucus and favors multiple cellular processes, including cell internalization, lysosomal escape, and controlled CUR release. This strategy relieves intracellular oxidative stress, improves wound healing, and reduces immune responses by polarizing the proinflammatory M1-type macrophages to the anti-inflammatory M2-type. Upon oral administration of hydrogel-encapsulating P127-AuS@CURs plus intestinal intralumen TMP, their therapeutic effects against acute and chronic UC are demonstrated to be superior to those of a widely used clinical drug, dexamethasone. The treatment of P127-AuS@CURs (+ TMP) elevates the proportions of beneficial bacteria (e.g., Lactobacillus and Lachnospiraceae), whose metabolites can also mitigate colitis symptoms by regulating genes associated with antioxidation, anti-inflammation, and wound healing. Overall, the intestinal intralumen TMP offers a promising approach to enhance the therapeutic outcomes of noninvasive medicines against UC.

JournalAdvanced Materials
Volume36
Issue14
Pagination2309516
Date Published2024-04-01
PublisherWiley
ISSN0935-9648
DOIhttps://doi.org/10.1002/adma.202309516
URLhttps://onlinelibrary.wiley.com/doi/10.1002/adma.202309516
KeywordsMild photothermia, Nanomotor, Oral administration, Ulcerative colitis
RightsrestrictedAccess
Peer reviewedyes
Statuspublished

Back to top