Pnano - a cluster of nanotechnology projects

PNano - Experts in Nanotechnology Pnano is a group of experts developing a cluster of nanotechnology projects. Our team specializes in developing nanotechnology projects ranging from nanooptoelectronics to safe early stage prenatal molecular diagnostics.

Aging Expert Urges Government Leaders to Accelerate Research in Aging and Proactively Increase the Retirement Age to Prevent Economic Crisis (via SBWire)

Forest Hills, NY -- (SBWIRE) -- 10/01/2013 -- A leading expert on aging sees extending healthy lifespan as the most plausible solution and a source of growth for the debt-laden faltering economies of the developed countries. In his newly released book…

The website of one of the most productive scientists alive and the founder of Seqeunom, Dr. Charles Cantor is online. Please visit !

Sequenom, Inc developed a sensitive assay for analyzing cell free fetal RNA (cffRNA) and cell free fetal DNA (cffDNA) from the mother's periferal blood to test the fetus for chromosomal abnormalities and genetic defects. According to third-party publications, cffRNA and cffDNA can be detected in mother's blood as early as 5/6th week of pregnancy.
Sequenom's highly accurate, efficient and sensitive method uses nanotechnology to test for chromosomal abnormalities including trisomy of chromosomes 21 (Down's syndrome), 18 (Edward's syndrome), 13 (Patau syndrome) as well as for genetic disorders including RHD, Y-chromosome related disorders, cystic fibrosis and wide spectrum of other diseases.

Recently the company announced that the test will be delayed and will hit the market after large-scale independant trials are concluded. Preliminary time frame is Q4/09-Q1/10. The announcement resulted in a 75% drop in the stock price.

At current prices the company looks like a steal and prenatal diagnostic centers worldwide should consider this technology.

A research team at Northwestern University has demonstrated a tool that can precisely deliver tiny doses of drug-carrying nanomaterials to individual cells.
The tool, called the Nanofountain Probe, functions in two different ways: in one mode, the probe acts like a fountain pen, wherein drug-coated nanodiamonds serve as the ink, allowing researchers to create devices by 'writing' with it. The second mode functions as a single-cell syringe, permitting direct injection of biomolecules or chemicals into individual cells.

The research was led by Horacio Espinosa, professor of mechanical engineering, and Dean Ho, assistant professor of mechanical and biomedical engineering, both at the McCormick School of Engineering and Applied Science at Northwestern. Their results were recently published online in the scientific journal Small.

The probe could be used both as a research tool in the development of next-generation cancer treatments and as a nanomanufacturing tool to build the implantable drug delivery devices that will apply these treatments. The potential of nanomaterials to revolutionize drug delivery is emergent in early trials, which show their ability to moderate the release of highly toxic chemotherapy drugs and other therapeutics. This provides a platform for drug-delivery schemes with reduced side effects and improved targeting.

"This is an exciting development that complements our previous demonstrations of direct patterning of DNA, proteins and nanoparticles," says Espinosa.

Using the Nanofountain Probe, the group injected tiny doses of nanodiamonds into both healthy and cancerous cells. This technique will help cancer researchers investigate the efficacy of new drug-nanomaterial systems as they become available.

The group also used the same Nanofountain Probes to pattern dot arrays of drug-coated nanodiamonds directly on glass substrates. The production of these dot arrays, with dots that can be made smaller than 100 nanometers in diameter, provides the proof of concept by which to manufacture devices that will deliver these nanomaterials within the body.

The work addresses two major challenges in the development and clinical application of nanomaterial-mediated drug-delivery schemes: dosage control and high spatial resolution.

In fundamental research and development, biologists are typically constrained to studying the effects of a drug on an entire cell population because it is difficult to deliver them to a single cell. To address this issue, the team used the Nanofountain Probe to target and inject single cells with a dose of nanodiamonds.

"This allows us to deliver a precise dose to one cell and observe its response relative to its neighbors," Ho says. "This will allow us to investigate the ultimate efficacy of novel treatment strategies via a spectrum of internalization mechanisms."

Beyond the broad research focused on developing these drug-delivery schemes, manufacturing devices to execute the delivery will require the ability to precisely place doses of drug-coated nanomaterials. Ho and colleagues previously developed a polymer patch that could be used to deliver chemotherapy drugs locally to sites where cancerous tumors have been removed. This patch is embedded with a layer of drug-coated nanodiamonds, which moderate the release of the drug. The patch is capable of controlled and sustained low levels of release over a period of months, reducing the need for chemotherapy following the removal of a tumor.

"An attractive enhancement will be to use the Nanofountain Probe to replace the continuous drug-nanodiamond films currently used in these devices with patterned arrays composed of multiple drugs," Ho says. "This allows high-fidelity spatial tuning of dosing in intelligent devices for comprehensive treatment."

"One of the most significant aspects of this work is the Nanofountain Probe's ability to deliver nanomaterials coated with a broad range of drugs and other biological agents," Espinosa says. "The injection technique is currently being explored for delivery of a wide variety of bio-agents, including DNA, viruses and other therapeutically relevant materials."

Nanodiamonds have also proven effective in seeding the growth of diamond thin films. These diamond films have exciting applications in next-generation nanoelectronics. Here again, the ability to pattern nanodiamonds with sub-100-nanometer resolution provides inroads to realizing these devices on a mass scale. The resolution in nanodiamond patterning demonstrated by the Nanofountain Probe represents an improvement of three orders of magnitude over other reported direct-write schemes of nanodiamond patterning.


Pnano is a group of experts developing a cluster of nanotechnology projects.

Our team specializes in developing nanotechnology projects ranging from nanooptoelectronics to safe early stage prenatal molecular diagnostics.