PMID- 32255000 OWN - NLM STAT- MEDLINE DCOM- 20200817 LR - 20200817 IS - 2050-7518 (Electronic) IS - 2050-750X (Linking) VI - 7 IP - 16 DP - 2019 Apr 28 TI - An injectable nanocomposite hydrogel co-constructed with gold nanorods and paclitaxel-loaded nanoparticles for local chemo-photothermal synergetic cancer therapy. PG - 2667-2677 LID - 10.1039/c9tb00120d [doi] AB - The precise locoregional co-delivery of multi-agents is an attractive strategy for combination cancer therapy, with the imperative requirement of an ideal injectable hydrogel platform with immense adaptability and multicomponent compatibility to achieve synergetic therapeutic efficiency. Herein, the methoxy poly(ethylene glycol)-b-poly(epsilon-caprolactone-co-1,4,8-trioxa[4.6]spiro-9-undecanone) (mPECT) diblock copolymer was empolyed to prepare mPECT-modified gold nanorods (AuNR-PECT) and paclitaxel-loaded mPECT nanoparticles (PTX/mPECT NPs). Then, an injectable nanocomposite hydrogel ((AuNR/PTX)mPECT(gel)) was fabricated by the host-guest inclusion between AuNR-PECT, PTX/mPECT NPs and alpha-cyclodextrin. A single local injection of (AuNR/PTX)mPECT(gel) could deposit abundant PTX/mPECT NPs (20% w/w) and AuNRs at the target location, which then sustainedly released PTX/mPECT NPs at a constant rate for two weeks and exhibited outstanding photothermal effects by near-infrared radiation. As a result, complete tumor regression after peritumoral injection of (AuNR/PTX)mPECT(gel) and effective inhibition of tumor recurrence after injection of (AuNR/PTX)mPECT(gel) in the postoperative cavity were observed in breast cancer mouse models; this can be attributed to the in situ synergetic chemo-photothermal anticancer efficiencies of AuNR and the PTX/mPECT NPs. Remarkably, this injectable hydrogel platform constructed by supramolecular assembly of multi-nanoagents can be facilely extended to local combination therapies of different therapeutic agents. FAU - Liu, Meiyan AU - Liu M AD - Department of Polymer Science and Engineering, Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. ajdong@tju.edu.cn. FAU - Huang, Pingsheng AU - Huang P FAU - Wang, Weiwei AU - Wang W FAU - Feng, Zujian AU - Feng Z FAU - Zhang, Jianhua AU - Zhang J FAU - Deng, Liandong AU - Deng L FAU - Dong, Anjie AU - Dong A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190322 PL - England TA - J Mater Chem B JT - Journal of materials chemistry. B JID - 101598493 RN - 0 (Antineoplastic Agents, Phytogenic) RN - 0 (Hydrogels) RN - 0 (Polyesters) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 7440-57-5 (Gold) RN - 9004-74-4 (monomethoxypolyethylene glycol) RN - P88XT4IS4D (Paclitaxel) SB - IM MH - Animals MH - Antineoplastic Agents, Phytogenic/*administration & dosage/chemistry MH - Cell Line, Tumor MH - Female MH - Gold/administration & dosage/chemistry MH - Hydrogels/*administration & dosage/chemistry MH - Injections MH - Mammary Neoplasms, Experimental/*drug therapy MH - Mice, Inbred BALB C MH - Nanocomposites/*administration & dosage/chemistry MH - Nanoparticles/administration & dosage/chemistry MH - Nanotubes/chemistry MH - Paclitaxel/*administration & dosage/chemistry MH - Photochemotherapy MH - Polyesters/administration & dosage/chemistry MH - Polyethylene Glycols/administration & dosage/chemistry EDAT- 2020/04/08 06:00 MHDA- 2020/08/18 06:00 CRDT- 2020/04/08 06:00 PHST- 2020/04/08 06:00 [entrez] PHST- 2020/04/08 06:00 [pubmed] PHST- 2020/08/18 06:00 [medline] AID - 10.1039/c9tb00120d [doi] PST - ppublish SO - J Mater Chem B. 2019 Apr 28;7(16):2667-2677. doi: 10.1039/c9tb00120d. Epub 2019 Mar 22.