Navigation Links
Listening to cells: Scientists probe human cells with high-frequency sound
Date:2/1/2013

ometers." For comparison, a cell's nucleus is about 10,000 nanometers wide.

The team faced challenges in applying picosecond ultrasonics to study biological systems. One challenge was the fluid-like material properties of the cell. "The light scattering process we use to detect the mechanical properties of the cell is much weaker than for solids," says Audoin. "We had to improve the signal to noise ratio without using a high-powered laser that would damage the cell." The team also faced the challenge of natural cell variation. "If you probe silicon, you do it once and it's finished," says Audoin. "If you probe the nucleus you have to do it hundreds of times and look at the statistics."

The team developed methods to overcome these challenges by testing their techniques on polymer capsules and plant cells before moving on to human cells. In the coming years the team envisions studying cancer cells with sound. "A cancerous tissue is stiffer than a healthy tissue," notes Audoin. "If you can measure the rigidity of the cells while you provide different drugs, you can test if you are able to stop the cancer at the cell scale."


'/>"/>

Contact: Ellen R. Weiss
eweiss@biophysics.org
240-290-5606
American Institute of Physics
Source:Eurekalert

Page: 1 2

Related biology news :

1. From the Amazon rainforest to human body cells: Quantifying stability
2. Programming cells: The importance of the envelope
3. Stanford scientists develop gene therapy approach to grow blood vessels in ischemic limbs
4. Queens scientists seek vaccine for Pseudomonas infection
5. Scientists produce eye structures from human blood-derived stem cells
6. American Society of Plant Biologists honors early career women scientists
7. Brandeis scientists win prestigious prize for circadian rhythms research
8. Scientists discover new method of proton transfer
9. Salk scientists open new window into how cancers override cellular growth controls
10. WileyChina.com - Now Featuring Bespoke Pages for China’s Life Scientists
11. Scientists win $2 million to study new pathway in development and maintenance of lymphoma
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2014)... iodine-125 (125I) in cancer treatment has been shown ... are critical for neural transmission between the peripheral ... colleagues from Institute of Radiation Medicine, Chinese Academy ... be implanted into rat dorsal root ganglia (DRG) ... with different radioactivity (0, 14.8, 29.6 MBq) were ...
(Date:7/30/2014)... first high-resolution map of the carbon stocks stored ... The new and improved methodology used to make ... market-based carbon economies. The new carbon map ... it provides the critical input to studies of ... and enforcement purposes. The technique includes the determination ...
(Date:7/29/2014)... researchers sometimes need to get back to basics. ... to study the impacts of the bumphead parrotfish ... at two remote locations in the central Pacific ... computer simulation, McCauley, an assistant professor in the ... his colleagues sought to understand whether the world,s ...
Breaking Biology News(10 mins):Peru's carbon quantified: Economic and conservation boon 2Peru's carbon quantified: Economic and conservation boon 3Underwater elephants 2Underwater elephants 3
... University of Illinois scientists have learned that a specific ... health. "In experiments with mice, we knocked out ... body to make arachidonic acid. Without arachidonic acid, the ... itchy, they scratched themselves continuously, and they developed a ...
... A team of researchers from the United States and Europe ... a role in the etiology of common forms of kidney ... variations in DNA sequences in more than 65,000 individuals of ... be more frequent among people with poor kidney function or ...
... Just one "pulse" of artificial light at night disrupts ... by Dr. Rachel Ben-Shlomo of the University of Haifa-Oranim ... Charalambos P. Kyriacou of the University of Leicester. "Damage ... is therefore important to understand the causes of this ...
Cached Biology News:U of I study: Lack of omega-6 fatty acid linked to severe dermatitis 2International research team discovers novel genes influencing kidney disease risk 2
(Date:7/30/2014)...  Decision Resources Group finds that the majority ... the United States believe that ... be the level of savings achievable by their ... cost to patients. Payers plan to leverage preferential ... expectations in order to encourage physician prescribing of ...
(Date:7/30/2014)... July 30, 2014  The Chicago Bears are excited ... of Dermatology (Academy) in an effort to raise awareness ... will host free SPOT me™ skin cancer screenings at ... Soldier Field. SPOT me™ is an educational campaign ... dangers and risks of skin cancer, and encourages people ...
(Date:7/30/2014)... While administrative claims and other data ... a relatively long period of time, there has ... of these ‘big data’ for comparisons of interventions ... powerful computer technology with the plethora of data ... significant promise for identifying optimal interventions for specific ...
(Date:7/30/2014)... 30, 2014 Sales Horizons, a leader ... blended sales training programs for companies engaged in complex ... used by thousands of salespeople over 25 years in ... program can be customized to address the unique sales ... blended sales training program consists of two parts: ...
Breaking Biology Technology:Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 2Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 3Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 2Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 3Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 4Leveraging ‘Big Data’ - Methodological Considerations in Health Services Research, New Webinar Hosted by Xtalks 2Sales Horizons Launches New Blended Sales Training Programs to Companies Engaged in Complex B2B Sales 2Sales Horizons Launches New Blended Sales Training Programs to Companies Engaged in Complex B2B Sales 3
... SAN FRANCISCO, Nov. 12 VIA Pharmaceuticals,(Nasdaq: ... on the development of,compounds for the treatment ... its clinical advisory board. Joining the clinical ... Professor of Medicine,Harvard Medical School, and Senior ...
... Associated with Chronic Pain Conditions in Patients Who ... ... FRAZER, Pa., Nov. 12 Cephalon, Inc. (Nasdaq:,CEPH) today announced ... Food and Drug Administration (FDA) seeking approval to,market FENTORA(R) (fentanyl buccal ...
... N.J. -- The Edwin A. Stevens Society of Stevens Institute ... School of Systems and Enterprises, Dr. Dinesh Verma, with the ... at the Park Avenue Club in Florham Park, N.J., Nov. ... is by invitation only., The Presidents Leadership Award is presented ...
Cached Biology Technology:VIA Pharmaceuticals Expands Clinical Advisory Board With Leading Experts in Cardiovascular Disease 2VIA Pharmaceuticals Expands Clinical Advisory Board With Leading Experts in Cardiovascular Disease 3VIA Pharmaceuticals Expands Clinical Advisory Board With Leading Experts in Cardiovascular Disease 4Cephalon Submits Supplemental New Drug Application for FENTORA 2Cephalon Submits Supplemental New Drug Application for FENTORA 3Cephalon Submits Supplemental New Drug Application for FENTORA 4Cephalon Submits Supplemental New Drug Application for FENTORA 5Cephalon Submits Supplemental New Drug Application for FENTORA 6Cephalon Submits Supplemental New Drug Application for FENTORA 7Dr. Dinesh Verma to be honored with President's Leadership Award at Edwin A. Stevens Society Gala 2Dr. Dinesh Verma to be honored with President's Leadership Award at Edwin A. Stevens Society Gala 3