A TiN-based nanophotosensitizer for enhanced photothermal therapy with the aid of ultrasound

Nan Li; Yunfeng Sun; Jiabao Ouyang; Yuna Che; Chen Chen; Wen Li; Changjun Wu

doi:10.1016/j.bbrc.2023.09.003

A TiN-based nanophotosensitizer for enhanced photothermal therapy with the aid of ultrasound

Biochem Biophys Res Commun. 2023 Oct 30:679:82-89. doi: 10.1016/j.bbrc.2023.09.003. Epub 2023 Sep 2.

Authors

Nan Li¹, Yunfeng Sun¹, Jiabao Ouyang¹, Yuna Che¹, Chen Chen¹, Wen Li¹, Changjun Wu²

Affiliations

¹ Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China.
² Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China. Electronic address: cjwu_hmu@outlook.com.

PMID: 37677981
DOI: 10.1016/j.bbrc.2023.09.003

Abstract

Background and purpose: Targeting and uptake are the most important strategies for enhancing the efficacy of cancer photothermal therapy (PTT) and reducing damage to surrounding normal tissues. In this study, a kind of nanophotosensitizer based on nanobubbles and TiN was prepared for synergetic therapy for hepatocellular carcinoma.

Methods: The photothermal agent titanium nitride (TiN) was wrapped in nanobubbles by membrane hydration method and verified in cells and animals. CCK-8, cell death staining, and JC-1 were used to verify the pernicious effect of photothermal combined with Ultrasound Targeted Nanobubble Destruction (UTND) and then injected into animals through the tail vein to observe its photothermal effect and in vivo inhibitory effect. A hemolysis test and body weight change verified its safety.

Results: The average diameter of the novel nanophotosensitizer was 300.3 ± 12.7 nm, with a consistent nanospheres morphology. The UTND technology was utilized to improve the penetration of TiN into tumor cells through the physical energy of ultrasound irradiation. The therapeutic effects of the synergistic therapy of UTND and PTT were verified in vitro and in vivo.

Conclusion: The research has established NBs@C₃F₈-TiN as a suitable ultrasound photothermal agent due to its appropriate size and efficient photothermal efficacy for visual photothermal therapy for HCC.

Keywords: Hepatocellular carcinoma; Nanophotosensitizer; Photothermal therapy; Titanium nitride; UTND.