PMID- 30685611 OWN - NLM STAT- MEDLINE DCOM- 20190611 LR - 20190613 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 541 DP - 2019 Apr 1 TI - Amino modified metal-organic frameworks as pH-responsive nanoplatforms for safe delivery of camptothecin. PG - 163-174 LID - S0021-9797(19)30055-4 [pii] LID - 10.1016/j.jcis.2019.01.042 [doi] AB - MIL-100(Fe) and MIL-101(Fe) metal-organic frameworks (MOFs) are excellent vehicles for drug delivery systems (DDSs) due to their high biocompatibility and stability in physiological fluids, as well as their pore diameter in the mesoporous range. Although they are appropriate for the internal diffusion of 20-(S)-camptothecin (CPT), a strongly cytotoxic molecule with excellent antitumor activity, no stable delivery system has been proposed so far for this drug based in MOFs. We here present novel DDSs based in amine functionalized MIL-100(Fe) and MIL-101(Fe) nanoMOFs with covalently bonded CPT. These CPT nanoplatforms are able to incorporate almost 20% of this molecule and show high stability at physiological pH, with no non-specific release. Based on their surface charge, some of these CPT loaded nanoMOFs present improved cell internalization in in vitro experiments. Moreover, a strong response to acid pH is observed, with up to four fold drug discharge at pH 5, which boost intracellular release by endosomolytic activity. These novel DDSs will help to achieve safe delivery of the very cytotoxic CPT, allowing to reduce the therapeutic dose and minimizing drug secondary effects. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Cabrera-Garcia, Alejandro AU - Cabrera-Garcia A AD - Instituto de Tecnologia Quimica, Universitat Politecnica de Valencia-Consejo Superior de Investigaciones Cientificas, Avenida de los Naranjos s/n, 46022 Valencia, Spain. FAU - Checa-Chavarria, Elisa AU - Checa-Chavarria E AD - Institute of Bioengineering, Universidad Miguel Hernandez Elche, Spain and Centre for Network Biomedical Research (CIBER-BBN), Spain. FAU - Rivero-Buceta, Eva AU - Rivero-Buceta E AD - Instituto de Tecnologia Quimica, Universitat Politecnica de Valencia-Consejo Superior de Investigaciones Cientificas, Avenida de los Naranjos s/n, 46022 Valencia, Spain. FAU - Moreno, Victoria AU - Moreno V AD - Neuronal and Tissue Regeneration Lab, Research Centre "Principe Felipe", Valencia, Spain. FAU - Fernandez, Eduardo AU - Fernandez E AD - Institute of Bioengineering, Universidad Miguel Hernandez Elche, Spain and Centre for Network Biomedical Research (CIBER-BBN), Spain. FAU - Botella, Pablo AU - Botella P AD - Instituto de Tecnologia Quimica, Universitat Politecnica de Valencia-Consejo Superior de Investigaciones Cientificas, Avenida de los Naranjos s/n, 46022 Valencia, Spain. Electronic address: pbotella@itq.upv.es. LA - eng PT - Journal Article DEP - 20190117 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 RN - 0 (Antineoplastic Agents, Phytogenic) RN - 0 (Metal-Organic Frameworks) RN - XT3Z54Z28A (Camptothecin) SB - IM MH - Antineoplastic Agents, Phytogenic/*administration & dosage/chemistry MH - Camptothecin/*administration & dosage/chemistry MH - *Cell Survival MH - Cells, Cultured MH - *Drug Delivery Systems MH - Drug Liberation MH - Fibroblasts/cytology/drug effects MH - HeLa Cells MH - Humans MH - Hydrogen-Ion Concentration MH - Metal Nanoparticles/*administration & dosage/chemistry MH - Metal-Organic Frameworks/*chemistry MH - Neuroblastoma/drug therapy/pathology OTO - NOTNLM OT - Biodegradability OT - Camptothecin OT - Drug delivery OT - Metal-organic frameworks OT - pH-responsive EDAT- 2019/01/28 06:00 MHDA- 2019/06/14 06:00 CRDT- 2019/01/28 06:00 PHST- 2018/10/08 00:00 [received] PHST- 2019/01/07 00:00 [revised] PHST- 2019/01/11 00:00 [accepted] PHST- 2019/01/28 06:00 [pubmed] PHST- 2019/06/14 06:00 [medline] PHST- 2019/01/28 06:00 [entrez] AID - S0021-9797(19)30055-4 [pii] AID - 10.1016/j.jcis.2019.01.042 [doi] PST - ppublish SO - J Colloid Interface Sci. 2019 Apr 1;541:163-174. doi: 10.1016/j.jcis.2019.01.042. Epub 2019 Jan 17.