PMID- 31790242 OWN - NLM STAT- MEDLINE DCOM- 20201008 LR - 20201008 IS - 1520-5126 (Electronic) IS - 0002-7863 (Linking) VI - 141 IP - 51 DP - 2019 Dec 26 TI - Programming Drug Delivery Kinetics for Active Burst Release with DNA Toehold Switches. PG - 20354-20364 LID - 10.1021/jacs.9b10765 [doi] AB - Despite smart drug delivery systems (DDSs) with high delivery efficiency and improved efficacy for chemotherapy, precise drug release in targeted tumor cells in a controllable way is still challenging. In this work, we develop DNA toehold switch-engineered spherical nucleic acid-templated hydrogel (SNAgel) for on-site active burst release of chemotherapeutic (tumor-killing) drugs in target cancer cells. By designing ligand-specific toehold sequences on hybridization chain reaction (HCR)-generated SNAgel, we realize burst release of payloads with a wide range of t(1/2) ranging from 60.52 to 5.49 min by active dynamic control of the kinetics. The camouflage of SNAgels with compact DNA shell enables elongated/prolonged blood circulation and targeted accumulation, cell entry, and apoptosis induction in vivo. The enhanced anticancer activity of SNAgels was substantiated in both cancer cell lines and xenografted tumor-bearing mice. This DNA-engineered kinetic control approach sheds new light on developing paradigm-shifting DDSs for cancer therapeutics. FAU - Xiao, Mingshu AU - Xiao M AUID- ORCID: 0000-0003-0673-1544 AD - Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , 500 Dongchuan Road , Shanghai 200241 , China. FAU - Lai, Wei AU - Lai W AD - Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , 500 Dongchuan Road , Shanghai 200241 , China. FAU - Wang, Fei AU - Wang F AD - School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine , Shanghai Jiao Tong University , Shanghai 200240 , China. FAU - Li, Li AU - Li L AUID- ORCID: 0000-0001-8494-4997 AD - Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , 500 Dongchuan Road , Shanghai 200241 , China. FAU - Fan, Chunhai AU - Fan C AUID- ORCID: 0000-0002-7171-7338 AD - School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine , Shanghai Jiao Tong University , Shanghai 200240 , China. FAU - Pei, Hao AU - Pei H AUID- ORCID: 0000-0002-6885-6708 AD - Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering , East China Normal University , 500 Dongchuan Road , Shanghai 200241 , China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191212 PL - United States TA - J Am Chem Soc JT - Journal of the American Chemical Society JID - 7503056 RN - 0 (Antibiotics, Antineoplastic) RN - 0 (DNA, Neoplasm) RN - 0 (Hydrogels) RN - 0 (Ligands) RN - 80168379AG (Doxorubicin) SB - IM MH - Animals MH - Antibiotics, Antineoplastic/chemical synthesis/chemistry/*pharmacology MH - Apoptosis/drug effects MH - Cell Proliferation/drug effects MH - Cells, Cultured MH - DNA, Neoplasm/*chemistry MH - Doxorubicin/chemical synthesis/chemistry/*pharmacology MH - *Drug Delivery Systems MH - Drug Liberation MH - Drug Screening Assays, Antitumor MH - HEK293 Cells MH - HeLa Cells MH - Humans MH - Hydrogels/*chemistry MH - Kinetics MH - Ligands MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - Neoplasms, Experimental/drug therapy/pathology MH - Nucleic Acid Amplification Techniques MH - Optical Imaging MH - Particle Size MH - Surface Properties EDAT- 2019/12/04 06:00 MHDA- 2020/10/09 06:00 CRDT- 2019/12/03 06:00 PHST- 2019/12/04 06:00 [pubmed] PHST- 2020/10/09 06:00 [medline] PHST- 2019/12/03 06:00 [entrez] AID - 10.1021/jacs.9b10765 [doi] PST - ppublish SO - J Am Chem Soc. 2019 Dec 26;141(51):20354-20364. doi: 10.1021/jacs.9b10765. Epub 2019 Dec 12.