cellular uptake gold

[Full text] Endocytosis and exocytosis of nanoparticles in ...

Endocytosis and exocytosis of nanoparticles in mammalian cells Nuri Oh,1,2 Ji-Ho Park1–31Department of Bio and Brain Engineering, 2Institute for Optical Science and Technology, 3Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of KoreaAbstract: Engineered nanoparticles that can be injected into the human body hold …

Toxicity and cellular uptake of gold nanoparticles: what ...

Toxicity and cellular uptake of gold nanoparticles: what we have learned so far? Alaaldin M. Alkilany 0 Catherine J. Murphy 0 0 A. M. Alkilany C. J. Murphy (&) Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA Gold nanoparticles have attracted enormous scientific and technological interest due to their ...

Cellular uptake and localization of inhaled gold ...

Inhalative nanocarriers for local or systemic therapy are promising. Gold nanoparticles (AuNP) have been widely considered as candidate material. Knowledge about their interaction with the lungs is required, foremost their uptake by surface macrophages and epithelial cells. Diseased lungs are of specific interest, since these are the main recipients of inhalation therapy.

Functionalized Gold Nanoparticles as Biosensors for ...

In the present contribution the fabrication and characterization of functionalized gold nanospheres of uniform shape and controlled size is reported. These nano-objects are intended to be used as Surface Enhanced Raman Spectroscopy (SERS) sensors for in-vitro cellular uptake and localization. Thiophenol was used as molecular reporter and was bound to the Au surface by a chemisorption process ...

Controlling the Cellular Uptake of Gold Nanorods

Controlling the Cellular Uptake of Gold Nanorods Terry B. Huff,† Matthew N. Hansen,† Yan Zhao,† Ji-Xin Cheng,*,†,‡ and Alexander Wei*,† Department of Chemistry and Weldon School of Biomedical Engineering, Purdue UniVersity,

Influence of cell size on cellular uptake of gold ...

A large cell size was beneficial for a high total cellular uptake due to the large contact area with the NPs. On the other hand, the large cell size resulted in high membrane tension that required high wrapping energy for engulfing of NPs and thus reduced the uptake. The two oppositely working effects decided the cellular uptake of NPs.

Cellular Uptake of Gold Nanoparticles Triggered by Host ...

We describe an approach to regulate the cellular uptake of small gold nanoparticles using supramolecular chemistry. The strategy relies on the functionalization of AuNPs with negatively charged pyranines, which largely hamper their penetration in cells. Cellular uptake can be activated in situ through the addition of cationic covalent cages that specifically recognize the fluorescent pyranine ...

Quantitatively understanding cellular uptake of gold ...

The novel laser fabricated gold nanoparticles with clean surface allow precisely tuning of the number of functional ligands. The cellular uptake of cancer cells as a function of the RGD peptide density on the surface has been examinated by radioactivity analysis method using I-125.

Determining the Size and Shape Dependence of Gold ...

Dependence of cellular uptake of gold nanoparticles as a function of size. Figure 2. Transmission electron microscopy imaging and measurements of gold nanoparticles in cells. (A) The graph of number of gold nanoparticles per vesicle diameter vs nanoparticle size. (B-F) TEM images of gold nanoparticles with sizes 14, 30, 50, 74, and 100 nm

Toxicity and cellular uptake of gold nanoparticles: what ...

(Turner et al. 2008) and larger gold nanoparticles (Tsoli et al. 2005). In this paper we review the very recent research in the area of cytotoxicity and biological uptake for gold nanoparticles. Gold plasmonic properties: the basis of their biomedical applications Bulk gold is, of course, gold in color. But gold at the

One low-dose exposure of gold nanoparticles induces long ...

Nov 22, 2016· Gold nanoparticles are promising candidates for optical sensing, bioimaging, delivery, and therapeutic applications due to their size- and shape-dependent physical properties and inherent biocompatibility compared with other metallic nanoparticles. Many studies have found that these particles are generally nontoxic at low doses for most, but not all, initial surface treatments.

Cellular uptake and toxicity of gold nanoparticles in ...

cellular uptake. PEGylated gold nanorods had a net positive charge compared with their spherical counterparts and particle geometry infl uenced cellular uptake. In the absence of serum proteins the uptake of plain spherical GNPs increased. These studies pave the way for the tailoring of gold nanoparticles for targeted tumor therapy applications.

Cellular Uptake of Gold Nanoparticles and Their Behavior ...

Gold nanoparticles (GNPs) enhance the damaging absorbance effects of high-energy photons in radiation therapy by increasing the emission of Auger-photoelectrons in the nm-μm range. It has been shown that the incorporation of GNPs has a significant effect on radiosensitivity of cells and their dose-dependent clonogenic survival. One major characteristic of GNPs is also their diameter-dependent ...

Cytotoxicity and cellular uptake of different sized gold ...

Cytotoxicity and cellular uptake of different sized gold nanoparticles in ovarian cancer cells Dhiraj Kumar1, Isha Mutreja2, Kenny Chitcholtan1 and Peter Sykes1 1Department of Obstetrics and Gynaecology, University of Otago, Christchurch School of Medicine, Christchurch, New Zealand 2Department of Orthopaedic Surgery & Musculoskeletal Medicine, University of Otago, Christchurch

Effect of Gold Nanoparticle Aggregation on Cell Uptake …

Effect of Gold Nanoparticle Aggregation on Cell Uptake and Toxicity Alexandre Albanese† and Warren C.W. Chan†,‡,§,* †Institute of Biomaterials and Biomedical Engineering, Terrence Donnelly Centre for Cellular and Biomolecular Research, Materials Science and Engineering,

Journal of Mustafa et al. J Nanomedic Nanotechnol 2011, 2 ...

Impact of Gold Nanoparticle Concentration on their Cellular Uptake by MC3T3-E1 Mouse Osteoblastic Cells as Analyzed by Transmission Electron Microscopy Thikra Mustafa1, Fumiya Watanabe 1, William Monroe2, Meena Mahmood, Yang Xu, Lamya Mohammed Saeed, Alokita Karmakar, Dan Casciano1, Syed Ali3 and Alexandru S. Biris1*

Cellular Transport of Functionalized Gold Nanoparticles

duration of the drug at the cellular site of action. To create drugs using nanotechnology that will act e ectively, it is important to understand the mechanism that drives cellular transport. The objective of this project is to better understand what the driving force of cellular uptake of gold nanoparticles is.

Cellular Uptake of Gold Nanoparticles and Their Behavior ...

Cellular Uptake of Gold Nanoparticles and Their Behavior as Labels for Localization Microscopy. Author links open overlay panel Felipe Moser 1 Georg Hildenbrand 1 2 Patrick Müller 1 Alexander Al Saroori 1 Abin Biswas 1 2 Margund Bach 1 Frederik Wenz 2 Christoph Cremer 3 4 Nina Burger 2 Marlon R. Veldwijk 2 Michael Hausmann 1.

Toxicity and cellular uptake of gold nanoparticles: what ...

Apr 06, 2010· Even though these results may not accurately predict the in vivo toxicity (Griffith and Swartz 2006), it does provide a basis for understanding the mechanism of toxicity and nanoparticle uptake at the cellular level. Gold nanoparticles have been found to …

Cellular Uptake of Gold Nanoparticles and Their Behavior ...

Article Cellular Uptake of Gold Nanoparticles and Their Behavior as Labels for Localization Microscopy Felipe Moser,1 Georg Hildenbrand,1,2 Patrick Mu¨ller,1 Alexander Al Saroori,1 Abin Biswas,1,2 Margund Bach,1 Frederik Wenz,2 Christoph Cremer,3,4 Nina Burger,2 Marlon R. Veldwijk,2 and Michael Hausmann1,* 1Kirchhoff-Institute for Physics, Faculty of Physics and Astronomy and 2Department of ...

Shape-dependent cytotoxicity and cellular uptake of gold ...

Apr 11, 2019· In the present report, three different shapes of chitosan-capped gold nanoparticles (nanospheres, nanostars, and nanorods) were synthesized to investigate the effects of shape on cytotoxicity and cellular uptake in cancer cells. Green tea extract was utilized as a reducing agent to reduce gold salts to gold nanospheres. Gold nanostars were prepared using an as-prepared …

Soft mesoporous organosilica nanorods with gold plasmonic ...

Aug 15, 2019· After being incubated for 0, 1, 3 and 6 h, the cells were digested and washed with PBS, and dispersed in 1 mL of PBS. The cellular uptake was measured via flow cytometry (Beckman coulter, NJ, USA). Simultaneously, the cellular uptake of the particles was observed by applying confocal laser scanning microscopy (CLSM).

Growing gold nanostructures for shape-selective cellular ...

Our results indicate that unlike the other shapes studied here, the nanomakura were taken up both via receptor-mediated endocytosis and macropinocytosis. Thus, from our library of different NSs with similar surface functionality, the shape is found to be an important parameter for cellular uptake.