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Title: A universal discoidal nanoplatform for the intracellular delivery of PNAs

Journal Article · · Nanoscale
DOI: https://doi.org/10.1039/C9NR03667A · OSTI ID:1557110

Peptide nucleic acids (PNAs) have gained considerable attention due to their remarkable potential in gene editing and targeting-based strategies. However, cellular delivery of PNAs remains a challenge in developing their broader therapeutic applications. Here, we investigated a novel complex made of lipid bicelles and PNA-based carriers for the efficient delivery of PNAs. For proof of concept, PNAs targeting microRNA (miR) 210 and 155 were tested. Comprehensive evaluation of positive as well as negative charge-containing bicelles with PNA : lipid ratios of 1 : 100, 1 : 1000, and 1 : 2500 was performed. The negatively charged bicelles with a PNA : lipid molar ratio of 1 : 2500 yielded a discoidal shape with a uniform diameter of ~30 nm and a bilayer thickness of 5 nm, while the positively charged bicellar system contained irregular vesicles after the incorporation of PNA. Small-angle X-ray scattering (SAXS) analysis was performed to provide insight into how the hydrophobic PNAs interact with bicelles. Further, flow cytometry followed by confocal microscopy analyses substantiate the superior transfection efficiency of bicelles containing dyeconjugated antimiR PNAs. Functional analysis also confirmed miR inhibition by PNA oligomers delivered by bicelles. The nanodiscoidal complex opens a new pathway to deliver PNAs, which, on their own, are a great challenge to be endocytosed into cells.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Grant/Contract Number:
SC0012704
OSTI ID:
1557110
Report Number(s):
BNL--211968-2019-JAAM
Journal Information:
Nanoscale, Journal Name: Nanoscale Journal Issue: 26 Vol. 11; ISSN NANOHL; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (53)

Intracellular Delivery of Peptide Nucleic Acid and Organic Molecules Using Zeolite-L Nanocrystals journal May 2014
Effect of Shape, Size, and Aspect Ratio on Nanoparticle Penetration and Distribution inside Solid Tissues Using 3D Spheroid Models journal September 2015
Fluorescent Nanorods and Nanospheres for Real-Time In Vivo Probing of Nanoparticle Shape-Dependent Tumor Penetration journal October 2011
Fluorescent Nanorods and Nanospheres for Real-Time In Vivo Probing of Nanoparticle Shape-Dependent Tumor Penetration journal October 2011
Solid-Phase synthesis of peptide nucleic acids journal May 1995
Effect of Surface Properties on Nanoparticle–Cell Interactions journal January 2010
Combined Delivery of Temozolomide and Anti-miR221 PNA Using Mesoporous Silica Nanoparticles Induces Apoptosis in Resistant Glioma Cells journal September 2015
Applications of PNA-laden nanoparticles for hematological disorders journal November 2018
The influence of size, shape and vessel geometry on nanoparticle distribution journal July 2012
Stability of peptide nucleic acids in human serum and cellular extracts journal September 1994
Preparation of avidin-labelled gelatin nanoparticles as carriers for biotinylated peptide nucleic acid (PNA) journal March 2000
Lipid–protein nanodiscs for cell-free production of integral membrane proteins in a soluble and folded state: Comparison with detergent micelles, bicelles and liposomes journal March 2012
The effects of temperature, salinity, concentration and PEGylated lipid on the spontaneous nanostructures of bicellar mixtures journal July 2014
Cationic shell-crosslinked knedel-like nanoparticles for highly efficient gene and oligonucleotide transfection of mammalian cells journal February 2009
Differential surface properties of commercial crystalline telmisartan samples journal May 2013
The effect of shape on the margination dynamics of non-neutrally buoyant particles in two-dimensional shear flows journal July 2008
Endocytosis of nanomedicines journal August 2010
Nanotechnology for delivery of peptide nucleic acids (PNAs) journal October 2016
Anti-tumor Activity of miniPEG-γ-Modified PNAs to Inhibit MicroRNA-210 for Cancer Therapy journal December 2017
Role of clathrin- and caveolae-mediated endocytosis in gene transfer mediated by lipo- and polyplexes journal September 2005
Effects of Membrane Defects and Polymer Hydrophobicity on Networking Kinetics of Vesicles journal May 2017
Lipid Nanodisc-Templated Self-Assembly of Gold Nanoparticles into Strings and Rings journal March 2017
Synthesis of Conformationally Preorganized and Cell-Permeable Guanidine-Based γ-Peptide Nucleic Acids (γGPNAs) journal February 2009
Fusion of Ligand-Coated Nanoparticles with Lipid Bilayers: Effect of Ligand Flexibility journal May 2014
Smart Photothermal-Triggered Bilayer Phase Transition in AuNPs–Liposomes to Release Drug journal January 2013
The Effects of Particle Size and Molecular Targeting on the Intratumoral and Subcellular Distribution of Polymeric Nanoparticles journal May 2010
Hydrophobic Gold Nanoparticle Self-Assembly with Phosphatidylcholine Lipid: Membrane-Loaded and Janus Vesicles journal September 2010
Structural and Thermal Analysis of Lipid Vesicles Encapsulating Hydrophobic Gold Nanoparticles journal May 2012
Self-Assembled Porphyrin Nanodiscs with Structure-Dependent Activation for Phototherapy and Photodiagnostic Applications journal March 2013
PNA hybridizes to complementary oligonucleotides obeying the Watson–Crick hydrogen-bonding rules journal October 1993
Control of Endothelial Targeting and Intracellular Delivery of Therapeutic Enzymes by Modulating the Size and Shape of ICAM-1-targeted Carriers journal August 2008
MicroRNA silencing for cancer therapy targeted to the tumour microenvironment journal November 2014
Principles of nanoparticle design for overcoming biological barriers to drug delivery journal September 2015
In vivo correction of anaemia in β-thalassemic mice by γPNA-mediated gene editing with nanoparticle delivery journal October 2016
Lipid tail protrusions mediate the insertion of nanoparticles into model cell membranes journal July 2014
In utero nanoparticle delivery for site-specific genome editing journal June 2018
Enhanced piezoelectricity from highly polarizable oriented amorphous fractions in biaxially oriented poly(vinylidene fluoride) with pure β crystals journal January 2021
Strategies for the intracellular delivery of nanoparticles journal January 2011
Pathway for insertion of amphiphilic nanoparticles into defect-free lipid bilayers from atomistic molecular dynamics simulations journal January 2015
Guiding the location of nanoparticles into vesicular structures: a morphological study journal January 2007
Nanoparticle-based therapy in an in vivo microRNA-155 (miR-155)-dependent mouse model of lymphoma journal June 2012
Mammalian cells preferentially internalize hydrogel nanodiscs over nanorods and use shape-specific uptake mechanisms journal October 2013
A Truncated HIV-1 Tat Protein Basic Domain Rapidly Translocates through the Plasma Membrane and Accumulates in the Cell Nucleus journal June 1997
Small unilamellar vesicles: a platform technology for molecular imaging of brain tumors journal March 2011
Using an in-vacuum CCD detector for simultaneous small- and wide-angle scattering at beamline X9 journal January 2013
Sequence-selective recognition of DNA by strand displacement with a thymine-substituted polyamide journal December 1991
The Effect of Nanoparticle Size, Shape, and Surface Chemistry on Biological Systems journal August 2012
Combining Anti-Mir-155 with Chemotherapy for the Treatment of Lung Cancers journal November 2016
The Morphology of Self-Assembled Lipid-Based Nanoparticles Affects Their Uptake by Cancer Cells journal October 2016
Endocytosis of nanomedicines text January 2010
Advances in Nanoparticle-based Delivery of Next Generation Peptide Nucleic Acids journal March 2019
β-Catenin Knockdown in Liver Tumor Cells by a Cell Permeable Gamma Guanidine-based Peptide Nucleic Acid journal October 2013
Nanoparticle for delivery of antisense γPNA oligomers targeting CCR5 journal April 2013