Black‐Phosphorus‐Incorporated Hydrogel as a Sprayable and Biodegradable Photothermal Platform for Postsurgical Treatment of Cancer. Issue 5 (3rd March 2018)

• Record Type: Journal Article
• Authors: Shao, Jundong; Ruan, Changshun; Xie, Hanhan; Li, Zhibin; Wang, Huaiyu; Chu, Paul K.; Yu, Xue‐Feng
• Is Part Of: Advanced science. Volume 5:Issue 5(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-03-03
• Subjects: 2D materials -- black phosphorus -- near‐infrared lasers -- photothermal cancer therapy -- thermosensitive hydrogels; Science -- Periodicals; 505
• DOI: 10.1002/advs.201700848
• Languages: English
• ISSNs: 2198-3844

Abstract

Abstract: Photothermal therapy (PTT) is a fledgling therapeutic strategy for cancer treatment with minimal invasiveness but clinical adoption has been stifled by concerns such as insufficient biodegradability of the PTT agents and lack of an efficient delivery system. Here, black phosphorus (BP) nanosheets are incorporated with a thermosensitive hydrogel [poly(d, l ‐lactide)‐poly(ethylene glycol)‐poly(d, l ‐lactide) (PDLLA‐PEG‐PDLLA: PLEL)] to produce a new PTT system for postoperative treatment of cancer. The BP@PLEL hydrogel exhibits excellent near infrared (NIR) photothermal performance and a rapid NIR‐induced sol–gel transition as well as good biodegradability and biocompatibility in vitro and in vivo. Based on these merits, an in vivo PTT postoperative treatment strategy is established. Under NIR irradiation, the sprayed BP@PLEL hydrogel enables rapid gelation forming a gelled membrane on wounds and offers high PTT efficacy to eliminate residual tumor tissues after tumor removal surgery. Furthermore, the good photothermal antibacterial performance prevents infection and this efficient and biodegradable PTT system is very promising in postoperative treatment of cancer. Abstract : A sprayable and biodegradable photothermal therapy (PTT) system composed of a thermosensitive hydrogel incorporated with black phosphorus (BP) nanosheets is presented for post‐surgical treatment of cancer. The obtained hydrogel enables rapid gelation and offers high PTT efficacy to eliminate residual tumor after surgery. This efficient and biodegradable PTT system is very promising in the postoperative treatment of cancer.