Article (Scientific journals)
Synthesis of micellar-like terpolymer nanoparticles with reductively-cleavable cross-links and evaluation of efficacy in 2D and 3D models of triple negative breast cancer
Monteiro, Patricia F.; Gulfam, Muhammad; Monteiro, Cíntia J. et al.
2020In Journal of Controlled Release, 323, p. 549-564
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Keywords :
biomaterial; nanomedicine
Abstract :
[en] Triple negative or basal-like breast cancer (TNBC) is characterised by aggressive progression, lack of standard therapies and poorer overall survival rates for patients. The bad prognosis, high rate of relapse and resistance against anticancer drugs have been associated with a highly abnormal loss of redox control in TNBC cells. Here, we developed docetaxel (DTX)-loaded micellar-like nanoparticles (MLNPs), designed to address the aberrant TNBC biology through the placement of redox responsive cross-links designed into a terpolymer. The MLNPs were derived from poly(ethyleneglycol)-b-poly(lactide)-co-poly(N3-α-ε-caprolactone) with a disulfide linker pendant from the caprolactone regions in order to cross-link adjacent chains. The terpolymer contained both polylactide and polycaprolactone to provide a balance of accessibility to reductive agents necessary to ensure stability in transit, but rapid micellar breakdown and concomitant drug release, when in breast cancer cells with increased levels of reducing agents. The empty MLNPs did not show any cytotoxicity in vitro in 2D monolayers of MDA-MB-231 (triple negative breast cancer), MCF7 (breast cancer) and MCF10A (normal breast epithelial cell line), whereas DTX-loaded reducible crosslinked MLNPs exhibited higher cytotoxicity against TNBC and breast cancer cells which present high intracellular levels of glutathione. Crosslinked and non-crosslinked MLNPs showed high and concentration-dependent cellular uptake in monolayers and tumour spheroids, including when assessed in co-cultures of TNBC cells and cancer-associated fibroblasts. DTX loaded crosslinked MLNPs showed the highest efficacy against 3D spheroids of TNBC, in addition the MLNPs also induced higher levels of apoptosis, as assessed by annexin V/PI assays and increased caspase 3/7 activity in MDA-MB-231 cells in comparison to cells treated with DTX-loaded un-crosslinked MLNP (used as a control) and free DTX. Taken together these data demonstrate that the terpolymer micellar-like nanoparticles with reducible crosslinks have high efficacy in both 2D and 3D in vitro cancer models by targeting the aberrant biology, i.e. loss of redox control of this type of tumour, thus may be promising and effective carrier systems for future clinical applications in TNBC. © 2020 Elsevier B.V.
Research center :
Center for Education and Research on Macromolecules (CERM)
Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Monteiro, Patricia F.;  University of Nottingham, School of Pharmacy, United Kingdom
Gulfam, Muhammad;  University of Nottingham, School of Pharmacy, United Kingdom
Monteiro, Cíntia J.;  University of Nottingham, School of Pharmacy, United Kingdom
Travanut, Alessandra;  University of Nottingham, School of Pharmacy, United Kingdom
Abelha, Thais Fedatto;  University of Nottingham, School of Pharmacy, United Kingdom
Pearce, Amanda K. Pearcea,;  University of Nottingham, School of Pharmacy, United Kingdom
Jérôme, Christine  ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Grabowska, Anna M. Grabowskac,;  University of Nottingham, Cancer Biology, Division of Cancer and Stem Cells, UK
Clarke, Philip A.;  University of Nottingham, Cancer Biology, Division of Cancer and Stem Cells, UK
Collins, Hilary M.;  University of Nottingham, School of Pharmacy, United Kingdom
Heery, David M.;  University of Nottingham, School of Pharmacy, United Kingdom
Gershkovich, Pavel;  School of Pharmacy, University of NottinghamNG7 2RD, United Kingdom
Alexander, Cameron;  University of Nottingham, School of Pharmacy, United Kingdom
More authors (3 more) Less
Language :
English
Title :
Synthesis of micellar-like terpolymer nanoparticles with reductively-cleavable cross-links and evaluation of efficacy in 2D and 3D models of triple negative breast cancer
Publication date :
10 July 2020
Journal title :
Journal of Controlled Release
ISSN :
0168-3659
eISSN :
1873-4995
Publisher :
Elsevier B.V.
Volume :
323
Pages :
549-564
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
EPSRC Programme Grant for Next Generation Biomaterials Discoveryand [Grants EP/H005625/1, EP/N03371X/1]; The Erasmus Mundus Joint Doctoral Program; NanoFarJointDoctoralProgram
Funders :
EPSRC - Engineering and Physical Sciences Research Council [GB]
CAPES - Coordenação de Aperfeicoamento de Pessoal de Nível Superior [BR]
Royal Society [GB]
CE - Commission Européenne [BE]
EACEA - European Education and Culture Executive Agency [BE]
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