Navigation Links
Laser beam makes cells 'breathe in' water and potentially anti-cancer drugs
Date:3/16/2011

Shining a laser light on cells and then clicking off the light makes the cells "breathe in" surrounding water, providing a potentially powerful delivery system for chemotherapy drugs, as well as a non-invasive way to target anti-Alzheimer's medicines to the brain. That's the conclusion of a report in ACS's The Journal of Physical Chemistry Letters.

Andrei Sommer's group, with Emad Aziz and colleagues note using this technique before to force cancer cells to sip up anti-cancer drugs and fluorescent dyes. Pulses of laser light can also change the volume of water inside cells in a way that plumps up wrinkles and makes skin look younger, the researchers found in an earlier study. "The potential applications of the technique range from anticancer strategies to the design principles of nano-steam engines," the report states. Using the so-called Liquidrom ambient approach, developed by Aziz's group, the researchers combined for the first time laser irradiation with soft X-rays obtained from a cyclotron radiation source to explore the molecular structure of interfacial water layers under ambient conditions.

The researchers now showed that laser light aimed at a cell causes the water inside the cell to expand. When the light goes off, the volume of water collapses again, creating a strong pull that also sucks in the water surrounding the cell. This "breathing in and out" of the water molecules can pull chemotherapy drugs into a cell faster than they would normally penetrate, the researchers found. "In other words, we discovered a powerful method to kill cancer cells by pumping anti-cancer drugs into them via laser light," said Sommer.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

0

GOOD

Page: 1

Related biology news :

1. Sensitive laser instrument could aid search for life on Mars
2. ESA tests laser to measure atmospheric carbon dioxide
3. Princeton researchers discover new type of laser
4. Scientists use lasers to measure changes to tropical forests
5. Fattysaurus or thinnysaurus? How dinosaurs measure up with laser imaging
6. Researcher: Lasers used to detect melamine in baby formula
7. Using high-precision laser tweezers to juggle cells
8. Healing wounds with lasers, vehicles that drive themselves, other cutting-edge optics
9. Nonstick and laser-safe gold aids laser trapping of biomolecules
10. New Report Just Published: World Solid-State, Fiber, Gas and Dye Lasers Market Report
11. Laser processes promise better artificial joints, arterial stents
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/22/2013)... Calif., May 22, 2013 Early screening for prostate ... pregnancy testing is for women, thanks to UC Irvine ... American Chemical Society . , After more than a ... way to clearly identify clinically usable markers for prostate ... detected far sooner, with greater accuracy and at dramatically ...
(Date:5/22/2013)... YORK, May 22, 2013. Plastic additives known as ... about everywhere: They turn up in flooring, plastic ... to the Centers for Disease Control and Preventionthe ... phthalates have come under increasing scrutiny. A growing ... (which can leech from packaging and mix with ...
(Date:5/21/2013)... device attached to a whale entangled in fishing gear, ... changed a whale,s diving and swimming behavior. The monitoring ... and migrate, depletes their energy as they drag gear ... slow death. , The scientists in this entanglement response ... two-year-old female North Atlantic right whale called Eg 3911. ...
Breaking Biology News(10 mins):UCI chemists devise inexpensive, accurate way to detect prostate cancer 2UCI chemists devise inexpensive, accurate way to detect prostate cancer 3Study links chemicals widely found in plastics and processed food to elevated blood pressure in children and teens 2Study reveals how fishing gear can cause slow death of whales 2Study reveals how fishing gear can cause slow death of whales 3
... went looking for fossil whales and dinosaurs in Saudi Arabia, ... primate fossil. But the skull he stumbled upon ... apes and monkeys may have looked like and when the ... at the University of Michigan and the Saudi Geological Survey ...
... Rice University scientists have found the "ultimate" solvent for ... brings the creation of a highly conductive quantum nanowire ... of bundling, making them less useful than when they,re ... Pasquali, a professor in chemical and biomolecular engineering and ...
... at the U.S. Department of Energy,s Savannah River ... and Mississippi State University to decrease mold growth ... Funded by the Department of Homeland ... (SERRI), Mississippi State University asked SRNL and Tuskegee ...
Cached Biology News:Fossil find puts a face on early primates 2Fossil find puts a face on early primates 3Fossil find puts a face on early primates 4Nanotubes pass acid test 2Nanotubes pass acid test 3SRNL works to decrease hazards from mold in water damaged homes 2
(Date:5/21/2013)... , May 21, 2013  On May ... FCN ), the global business advisory firm dedicated ... value (the "Company"), announced that it has combined ... were formerly included within the Corporate Finance/Restructuring segment ... segment to form a single integrated practice whose ...
(Date:5/21/2013)... of a new study led by George Washington ... that nucleation of ice in small droplets is ... behavior at the nanoscale. The formation of ice ... research question whose answer also has important implications ... The crystallization of ice from supercooled water is ...
(Date:5/21/2013)... Clinverse, Inc. , a global ... announced today it has formed a strategic alliance ... FLS eClinical commerce platform aggregates data collected through ... ™, Aggregate Spend Solutions’ recently-launched flagship product, is ... transfer of value at investigator meetings or any ...
(Date:5/21/2013)... Many have long discussed the link between ... physicians from Clinical Psychiatry.com readdressed the topic ... and suggested using hypnotherapy and other mental ... stress that cause acne. , Doctors in the article ... about, stress causes changes in the skin that have ...
Breaking Biology Technology:FTI Consulting Releases Realigned Segment Information Reflecting Newly Combined Health Solutions Practice 2Study led by GW professor provides better understanding of water's freezing behavior at nanoscale 2Clinverse, Inc. Announces Strategic Alliance with Aggregate Spend Solutions, LLC 2Clinverse, Inc. Announces Strategic Alliance with Aggregate Spend Solutions, LLC 3Adult Acne Treatment, Probiotic Action Explains How Hypnotherapy and Probiotics May Cure Various Skin Conditions 2
... Novel Proteasome Inhibitor in ... Myeloma, SOUTH SAN FRANCISCO, Calif. and NORWALK, Conn., ... Proteolix, Inc. today,announced the enrollment of the first patient ... potent and selective proteasome,inhibitor, carfilzomib (PR-171), in patients with ...
... BioVex Inc, a biotechnology,company developing clinical stage treatments ... today that it has appointed Dr. Thaddeus,Pullano, 53, ... http://www.newscom.com/cgi-bin/prnh/20070815/NYW022 ) Previously, Dr. Pullano ... Acambis from 2003 to 2007. In this role, ...
... Science Addressing Increased Demand for Food, Feed, Fuel, ... DuPont (NYSE: DD ),Chairman and CEO Charles ... Officer Thomas M. Connelly, and Group Vice President ... updated investors on DuPont,businesses serving the agriculture and ...
Cached Biology Technology:The Multiple Myeloma Research Consortium (MMRC) and Proteolix Initiate Phase 2 Clinical Trial Investigating Carfilzomib for the Treatment of Multiple Myeloma 2The Multiple Myeloma Research Consortium (MMRC) and Proteolix Initiate Phase 2 Clinical Trial Investigating Carfilzomib for the Treatment of Multiple Myeloma 3The Multiple Myeloma Research Consortium (MMRC) and Proteolix Initiate Phase 2 Clinical Trial Investigating Carfilzomib for the Treatment of Multiple Myeloma 4BioVex Appoints Dr. Thaddeus Pullano as VP, Quality Assurance 2DuPont Leaders Brief Investors on Agriculture Businesses 2DuPont Leaders Brief Investors on Agriculture Businesses 3