Penetration of Lipid Membranes by Gold Nanoparticles: Insights into Cellular Uptake, Cytotoxicity, and Their Relationship

ACS Nano ◽  
2010 ◽  
Vol 4 (9) ◽  
pp. 5421-5429 ◽  
Author(s):  
Jiaqi Lin ◽  
Hongwu Zhang ◽  
Zhen Chen ◽  
Yonggang Zheng
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Uptake ◽  
Lipid Membranes

scholarly journals Lipid Reconstitution-Enabled Formation of Gold Nanoparticle Clusters for Mimetic Cellular Membrane

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Jiyoung Nam ◽  
Yong-Tae Kim ◽  
Aeyeon Kang ◽  
Kook-Han Kim ◽  
KyoRee Lee ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Cellular Uptake ◽  
Lipid Membranes ◽  
Lipid Membrane ◽  
Cellular Membrane ◽  
Phospholipid Bilayers ◽  
Head Group ◽  
Oligomeric State ◽  
Nanoparticle Clusters

Gold nanoparticles (AuNPs) encapsulated within reconstituted phospholipid bilayers have been utilized in various bioapplications due to their improved cellular uptake without compromising their advantages. Studies have proved that clustering AuNPs can enhance the efficacy of theranostic effects, but controllable aggregation or oligomerization of AuNPs within lipid membranes is still challenging. Here, we successfully demonstrate the formation of gold nanoparticle clusters (AuCLs), supported by reconstituted phospholipid bilayers with appropriate sizes for facilitating cellular uptake. Modulation of the lipid membrane curvatures influences not only the stability of the oligomeric state of the AuCLs, but also the rate of cellular uptake. Dynamic light scattering (DLS) data showed that 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE), with its relatively small head group, is crucial for establishing an effective membrane curvature to encapsulate the AuCLs. The construction of phospholipid bilayers surrounding AuCLs was confirmed by analyzing the secondary structure of M2 proteins incorporated in the lipid membrane surrounding the AuCLs. When AuCLs were incubated with cells, accumulated clusters were found inside the cells without the lipids being removed or exchanged with the cellular membrane. We expect that our approach of clustering gold nanoparticles within lipid membranes can be further developed to design a versatile nanoplatform.

Tailoring Cellular Uptake of Gold Nanoparticles Via the Hydrophilic-to-Hydrophobic Ratio of their (Co)polymer Coating

2015 ◽  
Vol 25 (22) ◽  
pp. 3433-3439 ◽  
Author(s):  
Zhiyue Zhang ◽  
Katleen Van Steendam ◽  
Samarendra Maji ◽  
Lieve Balcaen ◽  
Yulia Anoshkina ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Uptake ◽  
Polymer Coating

Abstract 394: ApoE3-containing High Density Lipoprotein Serves as a Multifunctional Platform for Delivery of Gold Nanoparticles for Hyperthermic Treatment

2016 ◽  
Vol 36 (suppl_1) ◽  
Author(s):  
Vasanthy Narayanaswami ◽  
Skylar T Chuang ◽  
Young-Seok Shon
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Uptake ◽  
Effective Means ◽  
Density Lipoprotein ◽  
Aqueous Solubility ◽  
Soluble Form ◽  
Glioblastoma Cells ◽  
Plasmon Band ◽  
Cytotoxicity Studies ◽  
Multifunctional Platform

We have developed a novel HDL-based multifunctional platform for transport and delivery of highly hydrophobic gold nanoparticles (AuNP) bearing photothermic properties. We exploit the ability of apolipoprotein E3 (apoE3) to act as a high affinity ligand for the low-density lipoprotein receptor (LDLr) to gain entry into glioblastoma cells. The issue of poor aqueous solubility of AuNP was overcome by integrating them with phospholipids and apoE3, yielding reconstituted rHDL bearing 3, 10, or 10 nm AuNP. UV-Vis spectra of rHDL-AuNP indicated the presence of stable particles with surface plasmon band at ~530 nm, a signature feature of AuNP. Transmission electron microscopy (TEM) revealed discoidal geometry for rHDL with 3, 10 and 17 nm particles. Co-immunoprecipitation assay using a soluble form of the LDLr indicated robust binding of rHDL-AuNP to the receptor. Immunofluorescence analysis indicated that all 3 rHDL particles were internalized by glioblastoma cells, as revealed by the presence of punctate, peri-nuclear endocytic/lysosomal vesicles; this suggests cellular uptake of rHDL-AuNP by receptor-mediated endocytosis. Cellular uptake was further confirmed by TEM, in which aggregated AuNP were found in the endosomal-lysosomal compartments. Finally, cytotoxicity studies demonstrated that more than 50% of cells were viable with rHDL-AuNP treatment of up to 0.1 mg/ml for 24 h. The findings that apoE3: (i) acts as a detergent in solubilizing and dramatically improving the aqueous solubility of AuNP, and, (ii) facilitates cellular uptake of rHDL-AuNP by the LDLr pathway, are significant since they offer an effective means of delivering AuNP across the cell membrane. This is particularly relevant in tumor cells since they overexpress LDLr to meet the high demand for cholesterol that is required for rapid proliferation and membrane biogenesis.

Increased cellular uptake of peptide-modified PEGylated gold nanoparticles

2017 ◽  
Vol 494 (1-2) ◽  
pp. 339-345 ◽  
Author(s):  
Bo He ◽  
Dan Yang ◽  
Mengmeng Qin ◽  
Yuan Zhang ◽  
Bing He ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Uptake

scholarly journals Targeting dendritic cells through gold nanoparticles: A review on the cellular uptake and subsequent immunological properties

2017 ◽  
Vol 91 ◽  
pp. 123-133 ◽  
Author(s):  
Suhana Ahmad ◽  
Anes Ateqah Zamry ◽  
Hern-Tze Tina Tan ◽  
Kah Keng Wong ◽  
JitKang Lim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Dendritic Cells ◽  
Cellular Uptake ◽  
Immunological Properties

Analytical methodology for studying cellular uptake, processing and localization of gold nanoparticles

2019 ◽  
Vol 1052 ◽  
pp. 1-9 ◽  
Author(s):  
Magdalena Matczuk ◽  
Lena Ruzik ◽  
Svetlana S. Aleksenko ◽  
Bernhard K. Keppler ◽  
Maciej Jarosz ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Uptake ◽  
Analytical Methodology

Morphological Diversity, Protein Adsorption, and Cellular Uptake of Polydopamine-Coated Gold Nanoparticles

Langmuir ◽  
2018 ◽  
Vol 34 (46) ◽  
pp. 14033-14045 ◽  
Author(s):  
Kwun Hei Samuel Sy ◽  
Lok Wai Cola Ho ◽  
Wilson Chun Yu Lau ◽  
Ho Ko ◽  
Chung Hang Jonathan Choi
Keyword(s):  
Gold Nanoparticles ◽  
Protein Adsorption ◽  
Cellular Uptake ◽  
Morphological Diversity

scholarly journals Protein-Coated Aryl Modified Gold Nanoparticles for Cellular Uptake Study by Osteosarcoma Cancer Cells

2020 ◽  
Author(s):  
Mehvesh Hameed ◽  
Seema Panicker ◽  
Sallam Hasan Abdallah ◽  
Amir A. Khan ◽  
Changseok Han ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cancer Cells ◽  
Cellular Uptake ◽  
Phase Transfer ◽  
Chemical Reduction ◽  
Uptake Study ◽  
Stabilizing Agents ◽  
Coated Nanoparticles ◽  
Green Route ◽  
The Difference

We synthesized protein-coated gold nanoparticles using green and chemical reduction routes for cellular uptake study. In the current work, we coated gold-aryl nanoparticles of the type AuNPs-C<sub>6</sub>H<sub>4</sub>-4-COOH with BSA, collagen, zein and lysozyme proteins. Both routes were carried out without phase-transfer catalysts or extraneous stabilizing agents. High crystallinity of the AuNPs synthesized by the green route can be seen in the transmission electron microscopy images. <a>Osteosarcoma cancer cells are malignant bone tumors with abnormal cellular functions. Studies using MG-63 cells will provide mechanistic suggestions on the details of the amplification in tumors. </a>We studied the cellular uptake of the bioconjugates by MG-63 osteosarcoma cells using laser confocal fluorescence microscopy (LCFM) and flow cytometry. In the LCFM study, BSA-AuNPs was uptaken most efficiently of all protein-coated gold nanoparticles synthesized by the green route. Zein and lysozyme coated nanoparticles, though small sizes, prepared by the green method were not efficiently uptaken by MG-63. The two nanoparticles are negatively charged and zein is also a hydrophobic coat. The difference in hydrophobicity and charge might have affected the internalization. All of those coated nanoparticles that were efficiently uptaken can potentially be used as diagnostic and therapeutic agents for osteosarcoma.

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