Soft Nanohydrogels Based on Laponite Nanodiscs: A Versatile Drug Delivery Platform for Theranostics and Drug Cocktails

Author(s)

Becher, Tiago B. ^[1] ; Mendonca, Monique C. P. ^[2] ; de Farias, Marcelo A. ^[3] ; Portugal, V, Rodrigo ; de Jesus, Marcelo B. ^[2] ; Ornelas, Catia ^[1]

Affiliation

^[1] Univ Estadual Campinas, Unicamp, Inst Chem, BR-13083861 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Unicamp, Inst Biol, BR-13083861 Campinas, SP - Brazil

^[3] V, Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: ACS APPLIED MATERIALS & INTERFACES; v. 10, n. 26, p. 21891-21900, JUL 4 2018.
• Web of Science Citations: 8

Abstract

A new nanohydrogel drug delivery platform based on Laponite nanodiscs, polyacrylate, and sodium phosphate salts is described. The hybrid nanohydrogel is tailored to obtain soft and flexible nanohydrogels with G' around 3 kPa, which has been proposed as the ideal stiffness for drug delivery applications. In vitro studies demonstrate that the new nanohydrogels are biocompatible, biodegradable, nonswellable, pH-responsive, and noncytotoxic and are able to deliver antineoplastic drugs into cancer cells. The IC50 of nanohydrogels containing cisplatin, 4-fluorouracil, and cyclophosphamide is significantly lower than the IC50 of the free drugs. In vivo experiments suggest that the new nanomaterials are biocompatible and do not accumulate in crucial organs. The simple formulation procedure enables encapsulation of virtually any water-soluble molecule, without the need for chemical modification of the guests. These nanohydrogels are a versatile platform that enables the simultaneous encapsulation of several cancer drugs, yielding an efficient drug cocktail delivery system, which for instance presents a positive synergistic effect against MCF-7 cells. (AU)

• FAPESP's process: 16/03765-6 - In vitro and in vivo determination of toxicological profile of nanoformulations
• Grantee: Monique Culturato Padilha Mendonça
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 13/11519-7 - Synthesis of new nanomaterials based on biodegradable supramolecular nanohydrogels for applications in drug delivery
• Grantee: Cátia Cristina Capêlo Ornelas Megiatto
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/03002-7 - Internalization and intracellular trafficking of nanoparticles: biological activity and nanotoxicological profile
• Grantee: Marcelo Bispo de Jesus
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 18/02093-0 - Development of new nanomaterials for nanomedicine applications
• Grantee: Cátia Cristina Capêlo Ornelas Megiatto
• Support Opportunities: Regular Research Grants