Give live cells injections of the latest nano-technology

Nano-injection technology has a wide range of prospects

[] Message: use of a specific wavelength of the laser beam to a single cell in a variety of different substances, but people still do not know living cell to accept such injection will produce what reaction. So learn the Cyrillic integrated technology laboratory this first eat crabs, they studied in the nanometer-level precision down to the injection of living cells and found on the laser Ray intensity make small adjustments can tag healthy cells and dead cells.

From Karen Cyrillic integrated technical Laboratory Assistant Professor of physics, the project's lead researcher, Ingo Reed • Wilke will, 20 June 2007 in Munich, Germany, organized by the world of Photonics Congress announced the discovery, this technology is also used in April of this year's Physics for too introduces weekly magazine.

Hewi said: "the human disease mainly occur in the cell level, in-depth understanding of protein or drug, how to act on a single cell can help researchers understand how these substances is scoped to the entire human body". This allows the discovery of the cellular accuracy is very important.

This new discovery may be about living unicellular micro-injection technology provides a series of guidelines. The application of such research is very broad, ranging from the detection of drug toxicity to locate the tumor cells to chemotherapy has important applications.

Hewi said: "this technology not only makes the researchers can use the unprecedented accuracy on cell micro-injection, even in the nanometer-level precision on cell operation".

Earlier individual cell injection technology is not an easy kill cells is reducing its physiological characteristics. Other physical means of micro-injection will stimulate the mammalian cells self defense system is on the rise of functional disorders. Break this strong fortress at the same time not hurt cell is especially difficult.

The researchers used a few femtosecond laser beam in the cell membrane of living cells to open a small hole or small incision and the cells from the incision inhaled a new substance. This beam is like a needle prick a cell layer of protection, the experimenter with some yellow coloring of iodine as to act as a "to-cell injection of vaccine" and found these successfully entered the cell Interior.

A femtosecond is a one-second, tsumoi minutes past also called-picosecond, femtosecond laser spectral wavelength control in the near infrared, so that the human eye cannot see. The researchers found, near infrared laser beam can effectively make the cut and not harm cell activity, of course, the premise is that we must control the intensity of the light beam. So far the beam's intensity and wavelength, as well as the nature of the action cell was decided injection hole size and injection of factors, but decided its mix of quantitative work still further.

Hewi said: "this is the first notice laser beam indicator and the effect of specific cell injection, its significance will be very far-reaching!"