Corporate Banner
Satellite Banner
Technology Networks Header
Friday, November 28, 2014
 
Register | Sign in
Home Page > Videos > Magneto-plasmonic Nanoparticle Platform for Capture, Separation and Enumeration of Rare Cells
  Videos

Return

Magneto-plasmonic Nanoparticle Platform for Capture, Separation and Enumeration of Rare Cells
SELECTBIO

Detection of disseminated tumor cells or tumor biomarkers in human fluids such as blood, urine, and saliva can provide an accessible tool for cancer detection and therapy monitoring. In particular, accurate quantitation of cancer cells in the bloodstream can help to determine prognosis and monitor the effectiveness of cancer therapy. However, the challenge of detecting circulating tumor cells (CTCs) is their rare occurrence, estimated as one to few CTCs among millions of leukocytes and billions of erythrocytes. Here we address this challenging problem by developing nanoparticle probes with multiple functionalities. Integration of multiple components in a single nanostructure is a challenging task. Most of the existing approaches to synthesis of hybrid nanoparticles require cumbersome multi-step protocols and result in nanostructures with limited tunability of physical and optical properties. Here, we developed a new type of nanoparticles which consist of primary 6 nm iron oxide core-gold shell nanoparticles that form highly uniform spherical assemblies with sizes that can be varied from ca. 70 to 180 nm. The magneto-plasmonic nanoclusters exhibit strong red-NIR absorbance and superparamagnetic properties with a high magnetic moment in an external magnetic field. We conjugated the nanoclusters with monoclonal antibodies specific for tumor biomarkers of breast, colon and skin cancers and demonstrated molecular specific optical and photoacoustic (PA) imaging with high sensitivity. We carried out experiments in whole blood from a normal volunteer spiked with various amounts of cancer cells. It was shown that cell capture efficiency exhibits a linear behavior from 5 to 500 cells per 2.5 mL of the whole blood. Furthermore, we demonstrated that molecular targeted nanoclusters can be used for simultaneous magnetic capture and PA detection of cancer cells in whole blood with greater than 90% capturing efficiency with no laborious processing steps that are commonly used in other cancer cell capture and enumeration assays. The magneto-plasmonic nanoparticle platform is being tested in blood samples of cancer patients with metastatic disease with a very good capture efficiency as compared to FDA approved CellSearch system. Our immunotargeted nanoparticles can be easily adapted to a variety of biomarkers, targeting both surface receptor molecules and intracellular biomarkers of epithelialderived cancer cells. In this presentation we will explore the opportunities afforded by the hybrid magneto-plasmonic nanoparticles and PA imaging for the development of a low cost simple and nearly real-time assays for capture, separation and enumeration of rare cells.

Request more information
Company product page



For access to this article, enter your email address to instantly recieve a Password Reset link.

Please enter your email address below:

Existing users please Sign In here. Don't have an account? Register Here for free access.

Don't have an account? | Register Here

Scientific News
Researchers Develop Efficient Method to Produce Nanoporous Metals
New technique to manufacture nanoporous metals is cheap and can be done over many scales.
Turkeys may be Lifesavers
Antibiotic to target staph infections, strep, comes from good bacteria in turkeys.
A Hybrid Vehicle That Delivers DNA
University at Buffalo researchers are developing new technology to improve DNA vaccines. The new transport system for DNA vaccines could help treat HIV, malaria, HPV and other major illnesses.
Big Data Set To Make A Big Difference In Childhood Cancer Treatment
UTS researchers are working with the Kids Research Institute to visualise large quantities of patient data to better diagnose and treat childhood cancer patients.
Two Studies Identify A Detectable, Pre-Cancerous State In The Blood
Findings pave way for new lines of cancer research focused on detection and prevention.
A Link between DNA Transcription and Disease-Causing Expansions Which Lead to Hereditary Disorders
A Tufts University study explores the relationship between transcription and the expansions of DNA repeats.
Did You Hear The One About The Two Businessmen On A Plane?
EquipNet’s vision ‘to revolutionize the way companies manage their surplus assets’ was first conceived at 30,000 feet somewhere between Chicago and Boston in 1999. Here we learn more about the company's first 15 years.
New Advance in Cryopreservation Could Change Management of World Blood Supplies
Engineers have identified a method to rapidly prepare frozen red blood cells for transfusions.
New Study Reveals Why Some People May be Immune to HIV-1
Natural genetic variation in a protective antiviral enzyme holds promise for new therapies.
Protein Key To The Development Of Blood Stem Cells Identified
Understanding the self-replication mechanisms is critical for improving stem cell therapies for blood-related diseases and cancers.
Scroll Up
Scroll Down
Skyscraper Banner
Skyscraper Banner
Follow TechNetcom1 on Twitter
Technology Networks Ltd. on LinkedIn
Go to LabTube.tv