Corporate Banner
Satellite Banner
Cell Culture
Scientific Community
Become a Member | Sign in
Home>News>This Article

JPK Reports on the Study of Structure and Dynamics of Biological Membranes

Published: Tuesday, October 15, 2013
Last Updated: Tuesday, October 15, 2013
Bookmark and Share
JPK Instruments reports on how AFM and advanced fluorescence microscopy is being applied in the study of biological membranes in the Centre de Biochimie Structurale.

The CBS includes a research group focused on single molecule physics. Dr Pierre-Emmanuel Milhiet runs a team which applies AFM and advanced fluorescence microscopies (single molecule tracking and single-molecule localization microscopy or SMLM) in the study of both structure and dynamics of biological membranes.

Speaking about his work, Dr Milhiet says "One of our aims is to decipher the molecular mechanisms involved in the lateral segregation of membrane components using artificial bilayers and intact cell membranes. Part of our activities is also to develop new methodologies and we have recently mounted a new setup combining a JPK AFM and home-made SMLM (especially PALM and STORM). The main motivation came from the fact that the lateral resolution that can be achieved with an AFM on intact cells is in the same range than that obtained by SMLM (a few tens of nanometers), making possible the precise identification of structures imaged by the tip. We are also involved in the development of high-speed AFM for imaging biological membranes as part of a collaborative effort with Professor Toshio Ando's group in Japan."

His team uses AFM because it is an outstanding tool to investigate membrane topography. Because of its vertical and lateral resolution, structure of membrane assemblies can be observed and single molecule (protein or DNA) can be delineated by the tip. The possibility to work in liquid is another tremendous advantage as compared to other structural biology techniques.

Dr Milhiet selected the JPK system because "It is a very stable machine for a stand-alone AFM allowing single protein resolution to be achieved on biological membranes. The HyperDrive™ mode is especially suitable for this purpose. Also, JPK's Tip-Assisted Optics stage can be combined with tip scanning which is very useful for compensating the drift of the sample stage which may be observed during long-term SMLM acquisition. Combining single molecule fluorescence microscopies with AFM is important as it enables us to understand that the integration of multiple methodologies over multiple length- and time-scales, from molecular to cellular levels, is necessary to tackle complex biological questions."

Further Information
Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,800+ scientific posters on ePosters
  • More than 4,000+ scientific videos on LabTube
  • 35 community eNewsletters

Sign In

Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Scientific News
Novel Tumor Treatment
In the first published results from a $386,000 National Cancer Institute grant awarded earlier this year, a paper by Scott Verbridge and Rafael Davalos has been published.
Personalized Drug Screening for Multiple Myeloma Patients
A personalized method for testing the effectiveness of drugs that treat multiple myeloma may predict quickly and more accurately the best treatments for individual patients with the bone marrow cancer.
Cancer-Fighting Tomato Component Traced
The metabolic pathway associated with lycopene, the bioactive red pigment found in tomatoes, has been traced by researchers at the University of Illinois.
Some Gut Microbes May Be Keystones of Health
University of Oregon scientists have found that strength in numbers doesn’t hold true for microbes in the intestines. A minority population of the right type might hold the key to regulating good health.
The Life Story of Stem Cells
A model analyses the development of stem cell numbers in the human body.
Novel Stem Cell Line Avoids Risk of Introducing Transplanted Tumors
Progenitor cells might eventually be used to repair or rebuild damaged or destroyed organs.
Tissue Engineers Recruit Cells to Make Their Own Strong Matrix
Extracellular matrix is the material that gives tissues their strength and stretch. It’s been hard to make well in the lab, but a Brown University team reports new success. The key was creating a culture environment that guided cells to make ECM themselves.
Towards Patient-Specific Drug Screening
A new breakthrough by the 3D stem cell printing team at Heriot-Watt could pave the way to individually tailored drug testing regimes, both reducing the need for animal testing and ensuring that patients receive drugs which are most effective for their individual needs.
Artificial Kidney Research Gets A Boost
Development of a surgically implantable, artificial kidney — a promising alternative to kidney transplantation or dialysis for people with end-stage kidney disease — has received a $6 million boost.
Improving the Efficiency of Red Blood Cell Production
Study points to way of significantly reducing cost of laboratory-produced cells.

Skyscraper Banner
Go to LabTube
Go to eposters
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,800+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,000+ scientific videos