PMID- 37179196 OWN - NLM STAT- MEDLINE DCOM- 20230526 LR - 20230526 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 645 DP - 2023 Sep TI - Autophagy-induced intracellular signaling fractional nano-drug system for synergistic anti-tumor therapy. PG - 986-996 LID - S0021-9797(23)00816-0 [pii] LID - 10.1016/j.jcis.2023.05.031 [doi] AB - Autophagy inducers increase the sensitivity of tumor cells to chemotherapeutic drugs and enhance anti-tumor efficacy. An autophagy-induced intracellular signaling fractional nano-drug system was constructed for the co-delivery of the autophagy inducer rapamycin (RAPA) and the anti-tumor drug 9-nitro-20(S)-camptothecin (9-NC). Link peptides, including cathepsin B-sensitive peptides (Ala-Leu-Ala-Leu, ALAL), nucleus-targeting peptides (TAT, sequence: YGRKKRRQRRR), and chrysin (CHR)-modified hydrophobic biodegradable polymers (poly(-caprolactone)) (PCL), were grafted onto hyaluronic acid (HA) to yield two amphiphiles, HA-ALAL-PCL-CHR (CPAH) and HA-ALAL-TAT-PCL-CHR (CPTAH). Spherical RAPA- and 9-NC-loaded micelles were obtained by the self-assembly of amphiphiles comprising CPAH and RAPA and CPTAH and 9-NC. In this fractional nano-drug system, RAPA was released earlier than 9-NC, as CPAH as a RAPA carrier lacked a nucleus-targeting TAT (unlike CPTAH as an 9-NC carrier). RAPA induced autophagy in tumor cells and improved their sensitivity, whereas the secondary nucleus-targeting micelles directly delivered 9-NC to the nucleus, considerably improving anti-tumor efficacy. Immunofluorescence staining, acridine orange (AO) staining, and western blotting results demonstrated that the system induced a high level of autophagy in combination chemotherapy. The proposed system possesses a high level of cytotoxicity in vitro and in vivo and provides a potential method for enhancing anti-tumor efficacy in clinical settings. CI - Copyright (c) 2023 Elsevier Inc. All rights reserved. FAU - Yan, Jianqin AU - Yan J AD - Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China. FAU - Shan, Chan AU - Shan C AD - Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China. FAU - Zhang, Zhuoran AU - Zhang Z AD - Department of Dentistry, Qingdao Special Service Sanatorium of PLA Navy, Qingdao 266021, China. FAU - Li, Fashun AU - Li F AD - Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China. FAU - Sun, Yong AU - Sun Y AD - Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China. Electronic address: sunyong@qdu.edu.cn. FAU - Wang, Qian AU - Wang Q AD - Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China. FAU - He, Bin AU - He B AD - National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China. FAU - Luo, Kui AU - Luo K AD - Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China. FAU - Chang, Jing AU - Chang J AD - College of Marine Life Science, Ocean University of China, Qingdao 266003, China. FAU - Liang, Yan AU - Liang Y AD - Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China. Electronic address: Liangyan072@foxmail.com. LA - eng PT - Journal Article DEP - 20230509 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 RN - 0 (Micelles) RN - 0 (Antineoplastic Agents) RN - W36ZG6FT64 (Sirolimus) RN - 0 (Drug Carriers) RN - 0 (Peptides) SB - IM MH - Humans MH - Micelles MH - *Antineoplastic Agents/chemistry MH - Sirolimus/pharmacology/therapeutic use MH - *Neoplasms/drug therapy/pathology MH - Drug Carriers/chemistry MH - Peptides/pharmacology MH - *Nanoparticles/therapeutic use MH - Autophagy MH - Cell Line, Tumor OTO - NOTNLM OT - 9-nitro-20(S)-camptothecin/rapamycin co-delivery OT - Autophagy OT - Graded release OT - Synergistic therapy COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/05/14 01:07 MHDA- 2023/05/26 06:42 CRDT- 2023/05/13 22:00 PHST- 2023/02/27 00:00 [received] PHST- 2023/05/04 00:00 [revised] PHST- 2023/05/05 00:00 [accepted] PHST- 2023/05/26 06:42 [medline] PHST- 2023/05/14 01:07 [pubmed] PHST- 2023/05/13 22:00 [entrez] AID - S0021-9797(23)00816-0 [pii] AID - 10.1016/j.jcis.2023.05.031 [doi] PST - ppublish SO - J Colloid Interface Sci. 2023 Sep;645:986-996. doi: 10.1016/j.jcis.2023.05.031. Epub 2023 May 9.