Navigation Links
Inside the cell, an ocean of buffeting waves
Date:8/14/2014

Cambridge, Mass. August 14, 2014 Conventional wisdom holds that the cytoplasm of mammalian cells is a viscous fluid, with organelles and proteins suspended within it, jiggling against one another and drifting at random. However, a new biophysical study led by researchers at Harvard University challenges this model and reveals that those drifting objects are subject to a very different type of environment.

The cytoplasm is actually an elastic gel, it turns out, so it puts up some resistance to simple diffusion. But energetic processes elsewhere in the cellin the cytoskeleton, especiallycreate random but powerful waves in the cytoplasm, pushing on proteins and organelles alike. Like flotsam and jetsam buffeted by the wakes of passing ships, suspended particles scatter much more quickly and widely than they would in a calm sea.

Because transport within the cytoplasm therefore depends mainly on separate processes that consume energy, a measurement of the spectrum of forces exerted on the cytoplasm at any given time can provide a snapshot of the metabolic state of the cell.

Led by David A. Weitz, Mallinckrodt Professor of Physics and Applied Physics at the Harvard School of Engineering and Applied Sciences (SEAS), a team of applied physicists and cell biologists have put forth this new model of the cytoplasm and demonstrated a way to quantify the aggregate forces felt by particles and organelles in the cell. Their findings, published online August 14 in the journal Cell, raise a host of new questions about cellular dynamics. They also provide a robust new tool for future investigations.

"Our research provides the first real physical understanding of the cytoplasm in mammalian cells," says lead author Ming Guo, Ph.D. '14, a former graduate student in applied physics at Harvard SEAS who is now continuing as a postdoctoral fellow to further explore the fundamental biophysics of cells. "This work is going to be critical
'/>"/>

Contact: Caroline Perry
cperry@seas.harvard.edu
617-496-1351
Harvard University
Source:Eurekalert  

Page: 1 2 3 4

Related medicine news :

1. Natural Multiple Sclerosis Treatment Review Reveals the Inside Story to Gary M. Levin’s Cure Program
2. Bacteria resistant materials -- £2m to get the inside story
3. Overcoming light scattering: New optical system sees deeper inside tissue
4. Ice cream chemistry: The inside scoop on a classic summer treat (video)
5. Inside the adult ADHD brain
6. Candid insider views in the NHS could help detect reasons for poor care
7. A civil war inside our cells: Scientists show how our bodies fight off jumping genes
8. Following a proteins travel inside cells is key to improving patient monitoring, drug development
9. Neuroimaging: Live from inside the cell
10. Stem cells inside sutures could improve healing in Achilles tendon injuries
11. A natural sugar delivers DNA aptamer drug inside tumor cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Inside the cell, an ocean of buffeting waves
(Date:9/20/2014)... Mexico (PRWEB) September 20, 2014 Villa ... the resort did not experience any damage in relation ... amenities and activities available. , Hurricane Odile struck Cabo ... intense wind, rain and powerful surf conditions. Located on ... Palmar Islands of Loreto experienced some heavy rain, but ...
(Date:9/20/2014)... 20, 2014 Ticket Down is ... tickets. This popular ticket exchange is offering their customer ... is nearing that next step in the entertainment business. The ... in the music and entertainment business, but is closing in ... straight No. 1 album, will hit the road next year ...
(Date:9/20/2014)... September 20, 2014 The print ... today’s edition of the Calgary Herald, with a ... readership of 270,000. The digital component is distributed ... across a network of top news sites and ... the campaign, visit http://www.worklifebalanceinfo.ca . , The ...
(Date:9/20/2014)... (HealthDay News) -- As flu season approaches, the best ... get a flu shot and a checkup, according to ... doctor can vaccinate people against the flu, and also ... Retail stores may provide flu shots for their customers, ... Jorge Parada, medical director of infection prevention and control ...
(Date:9/20/2014)... New PharmaPoint Drug Evaluation report, “Symbicort ... The asthma market saw very slow growth over ... with relatively efficacious standard therapies, such as short-acting ... long-acting beta-agonists (ICS/LABAs), and leukotriene modifiers, and has ... launch of seven novel targeted biologic agents and ...
Breaking Medicine News(10 mins):Health News:Villa del Palmar at the Islands of Loreto Fully Functioning After Hurricane 2Health News:Villa del Palmar at the Islands of Loreto Fully Functioning After Hurricane 3Health News:Ariana Grande Tickets in Chicago/Rosemont, Kansas City, Milwaukee, Saint Paul, Dallas, Houston, San Antonio, Oklahoma City Go On Sale Today 2Health News:Ariana Grande Tickets in Chicago/Rosemont, Kansas City, Milwaukee, Saint Paul, Dallas, Houston, San Antonio, Oklahoma City Go On Sale Today 3Health News:Getting ‘Wellthy’: Mediaplanet’s “Work-Life Wellness” campaign puts stock in the personal and economic gains of healthy, vital workplace environments for Canadians 2Health News:Get a Flu Shot During Checkup, Doctor Says 2Health News:Symbicort Asthma Market Forecasts to 2023 - Overview, Efficacy, Safety & SWOT Analysis in New Report Available at LifeScienceIndustryResearch.com 2Health News:Symbicort Asthma Market Forecasts to 2023 - Overview, Efficacy, Safety & SWOT Analysis in New Report Available at LifeScienceIndustryResearch.com 3Health News:Symbicort Asthma Market Forecasts to 2023 - Overview, Efficacy, Safety & SWOT Analysis in New Report Available at LifeScienceIndustryResearch.com 4
... is too expensive to eat a well-balanced diet may be surprised ... have changed eating healthily may actually be cheaper than their current ... New York, suggested that a healthy diet does not have to ... time, the cost of a healthy diet may be less than ...
... of removing cancerous kidneys through a small incision with ... and instuments. This is the hand-assisted Laproscopic technique, which ... standard laproscopic procedure. ,The research, being presented at the ... from the University of Michigan(U-M) Health System,// U.S., may ...
... which can be hard on the body. Stress affects the ... take to reduce impact of stress, and it's probably good ... sales rep, found that appointments and deadlines can be stressful. ... seem small, but they do tend to affect your blood ...
... Epidemiology, Biomarkers and Prevention, eating a daily multivitamin with ... the genetic risk of developing colon cancer. ,According ... colon cancer -- a parent or sibling are at ... Fuchs, lead investigator and assistant professor of medicine at ...
... by a biomedical engineer at the University of Pittsburgh ... of your eyes. The prototype device merges the visual ... ultrasound scan of what lies beneath. It creates the ... actual 3D location with the patient, showing blood vessels, ...
... nanobots it not with us yet, a tiny, inexpensive motor ... in the near future, according to Penn State engineer.,The smallest ... State’s Materials Research Institute is about the size of a ... 4 mm long.// ,Tiny, but powerfull, the smallest motor’s ...
Cached Medicine News:Health News:Eating healthy is cost effective 2Health News:Lessening operation and recovery time 2Health News:Folic Acid blows Gene-based Colon Cancer 2Health News:New form of ultrasonic vision 2Health News:Mini motor for micromedical applications 2
(Date:9/19/2014)... , Sept. 19, 2014 Kiromic, LLC, a ... of Kent Hance , the former chancellor of Texas ... retired as chancellor in July 2014, after raising $1.2 billion ... that Kent Hance , the most successful chancellor in ... team not only as an investor, but also as our ...
(Date:9/19/2014)... 2014 Research and Markets has announced ... Autoimmune, Cancer, Diarrhea, Mental Disorder) Market - Forecast to 2023" ... of this report, the human microbiome market is segmented by ... market is expected to be valued as $294 million in ... 22.3% within the forecast period of 2019-2023. The market is ...
(Date:9/19/2014)... 2014 Five MinuteClinic walk-in medical clinics are opening inside ... area. Three clinics opened in Memphis and ... will be added in Springfield on September ... is expected to open October 22.  MinuteClinic is the largest and ... United States . The Memphis ...
Breaking Medicine Technology:Former Texas Tech Chancellor Named New Vice Chairman of the Board of Kiromic, LLC 2Global Human Microbiome (Diabetes, Obesity, Autoimmune, Cancer, Diarrhea, Mental Disorder) Market - Forecast to 2023 2Global Human Microbiome (Diabetes, Obesity, Autoimmune, Cancer, Diarrhea, Mental Disorder) Market - Forecast to 2023 3MinuteClinic Walk-in Medical Clinics Opening in Memphis 2MinuteClinic Walk-in Medical Clinics Opening in Memphis 3
... N.Y., June 27, 2011 Consumers have a growing appetite ... market opportunity for device manufacturers that has barely been tapped, ... The company also unveiled a list of possible wellness device ... how people live, exercise and interact with their healthcare provider ...
... Texas, June 27, 2011 Luminex Corporation (NASDAQ: ... acquisition of privately-held EraGen Biosciences, Inc., an innovator in ... applications, for $34 million in cash. (Logo: ... acquisition will add between $5 million and $7 million ...
Cached Medicine Technology:IBM Study Identifies New Generation of Connected Health Devices 2IBM Study Identifies New Generation of Connected Health Devices 3IBM Study Identifies New Generation of Connected Health Devices 4IBM Study Identifies New Generation of Connected Health Devices 5Luminex Corporation Completes Acquisition of EraGen Biosciences, Inc. 2Luminex Corporation Completes Acquisition of EraGen Biosciences, Inc. 3
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
Medicine Products: