Thermosensitive hydrogel releasing nitric oxide donor and anti-CTLA-4 micelles for anti-tumor immunotherapy

Jihoon Kim, David M. Francis, Lauren F. Sestito, Paul A. Archer, Margaret P. Manspeaker, Meghan J. O’Melia and Susan N. Thomas ()
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Jihoon Kim: Georgia Institute of Technology
David M. Francis: Georgia Institute of Technology
Lauren F. Sestito: Georgia Institute of Technology
Paul A. Archer: Georgia Institute of Technology
Margaret P. Manspeaker: Georgia Institute of Technology
Meghan J. O’Melia: Georgia Institute of Technology
Susan N. Thomas: Georgia Institute of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-13

Abstract: Abstract Due to their autosynchronous roles in shaping the anti-tumor immune response, complex immune regulatory networks acting both locally within the tumor microenvironment as well as in its draining lymph nodes play critical roles in the cancer immunotherapy response. We describe herein a thermosensitive co-polymer hydrogel system formed from biocompatible polymers gelatin and Pluronic® F127 that are widely used in humans to enable the sustained release of a nitric oxide donor and antibody blocking immune checkpoint cytotoxic T-lymphocyte-associated protein-4 for efficient and durable anti-tumor immunotherapy. By virtue of its unique gel formation and degradation properties that sustain drug retention at the tumor tissue site for triggered release by the tumor microenvironment and formation of in situ micelles optimum in size for lymphatic uptake, this rationally designed thermosensitive hydrogel facilitates modulation of two orthogonal immune signaling networks relevant to the regulation of the anti-tumor immune response to improve local and abscopal effects of cancer immunotherapy.

Date: 2022
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DOI: 10.1038/s41467-022-29121-x

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