PMID- 34461213 OWN - NLM STAT- MEDLINE DCOM- 20220311 LR - 20240102 IS - 1873-3441 (Electronic) IS - 0939-6411 (Linking) VI - 169 DP - 2021 Dec TI - Successively triggered Rod-shaped protocells for enhanced tumor Chemo-Photothermal therapy. PG - 1-11 LID - S0939-6411(21)00222-8 [pii] LID - 10.1016/j.ejpb.2021.08.012 [doi] AB - Abundant existence of extracellular matrix biological hydrogels in solid tumors precludes most therapeutics to arrive at intracellular target sites, which is probably one of the threatened reasons of pancreatic ductal adenocarcinoma (PDAC) for public health. In this study, we designed a rod-shaped protocell nanoparticle loading with doxorubicin hydrochloride (Dox) and indocyanine green (ICG), denoted as Dox/ICG-RsPNs, for enhanced chemo-photothermal PDAC treatment. The enhanced therapeutic efficacy was achieved by successively enhancing penetration across matrix hydrogels, endocytosis, increasing local temperature under laser irradiation and hyperthermia-triggered Dox release to nucleus. We found that RsPNs with rod shape could easily penetrate across matrix hydrogel, exerting excellent tumor accumulation. Then RsPNs was internalized effectively by BxPC-3 cells via a caveolin-mediated endocytosis pathway. In addition, ICG endowed the Dox/ICG-RsPNs with photothermal effect and the photothermal conversion efficiency was calculated for 16.2%. Under irradiation, a great number of Dox transported to the nucleus via hyperthermia-induced release. Furthermore, we found that the relative tumor volume of Dox/ICG-RsPNs was merely 1.37 under irradiation at the end of pharmacodynamic studies, which was significantly lower than that of other groups. These findings will provide a promise on the rational design of drug delivery system for effective chemo-photothermal combination therapy to treat PDAC. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Zhang, Wei AU - Zhang W AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Chen, Lu AU - Chen L AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Cui, Mingshu AU - Cui M AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Xie, Luyao AU - Xie L AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Xi, Ziyue AU - Xi Z AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Wang, Yuwen AU - Wang Y AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. FAU - Shen, Xiaohan AU - Shen X AD - Affiliated Cixi Hospital, Wenzhou Medical University, Cixi 315300, China. FAU - Xu, Lu AU - Xu L AD - School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China. Electronic address: xulu@syphu.edu.cn. LA - eng PT - Journal Article DEP - 20210827 PL - Netherlands TA - Eur J Pharm Biopharm JT - European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V JID - 9109778 RN - 0 (Antibiotics, Antineoplastic) RN - 0 (Coloring Agents) RN - 0 (Nanoparticle Drug Delivery System) RN - 80168379AG (Doxorubicin) RN - IX6J1063HV (Indocyanine Green) SB - IM MH - Animals MH - Antibiotics, Antineoplastic/pharmacology MH - Artificial Cells MH - Biological Availability MH - Cell Line, Tumor MH - Coloring Agents/pharmacology MH - Doxorubicin/*pharmacology MH - Drug Therapy/*methods MH - Extracellular Matrix MH - Humans MH - Hyperthermia, Induced/*methods MH - Indocyanine Green/*pharmacology MH - Mice MH - Nanoparticle Drug Delivery System/pharmacology MH - Pancreatic Neoplasms MH - Photothermal Therapy/*methods MH - Treatment Outcome OTO - NOTNLM OT - Chemo-photothermal therapy OT - Matrix biological hydrogels OT - Rod-shaped protocells OT - Successive delivery process OT - Tumor penetration EDAT- 2021/08/31 06:00 MHDA- 2022/03/12 06:00 CRDT- 2021/08/30 20:13 PHST- 2021/06/05 00:00 [received] PHST- 2021/08/11 00:00 [revised] PHST- 2021/08/23 00:00 [accepted] PHST- 2021/08/31 06:00 [pubmed] PHST- 2022/03/12 06:00 [medline] PHST- 2021/08/30 20:13 [entrez] AID - S0939-6411(21)00222-8 [pii] AID - 10.1016/j.ejpb.2021.08.012 [doi] PST - ppublish SO - Eur J Pharm Biopharm. 2021 Dec;169:1-11. doi: 10.1016/j.ejpb.2021.08.012. Epub 2021 Aug 27.