Navigation Links
NIBIB scientists increase imaging efficiency in cell structure studies
Date:9/3/2009

Scientists in the National Institute of Biomedical Imaging and Bioengineering (NIBIB) Laboratory of Bioengineering and Physical Science have developed a new technique that allows researchers to visualize fine details of cell structure three-dimensionally in thick sections, thus providing greater insight into how cells are organized and how they function. The work is described in a report published online this week in Nature Methods.

The new electron tomography method, referred to as BF STEM tomography, lets researchers image samples that are more than three times the thickness of typical samples.

Electron tomography is carried out at the nanoscale on individual cells. Conventionally, high-resolution imaging of biological specimens has been accomplished by cutting cells into thin sections (300 nanometers or less) and imaging each section separately. Although reconstructing an entire structure from thin sections is laborious, thin sections are used because images of thicker sections typically are blurred. Serial BF STEM tomography accomplishes the same work using fewer yet thicker specimen sections, leading to faster reconstruction of intact organelles, intracellular pathogens, and even entire mammalian cells.

Drs. Alioscka Sousa, Martin Hohmann-Marriott, Richard Leapman and colleagues in NIBIB, in collaboration with Dr. Joshua Zimmerberg and colleagues in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), demonstrated feasibility and advantages of BF-STEM tomography in a study of red blood cells infected with Plasmodium falciparum, a parasite that causes malaria. High-resolution 3D reconstructions of entire cells were generated by serially imaging just a few thick sections. The intricate system of red blood cell and parasite membranes, as well as several organelles, can be seen in detail.

"We believe that the new technique, which was conceived by Dr. Sousa on the project team, will lead to improved 3D visualization of larger internal structures in mammalian cells at a nanoscale. And it will complement cryo electron tomography and super-resolution optical imaging approaches," according to Dr. Leapman.

Most high-performance electron microscopes can readily be equipped to utilize the BF STEM tomography approach. "This exciting new method, with its ability to provide nanoscale structural details over three dimensions, has the potential for broad application in cell biology," says NIBIB Director Roderic Pettigrew. "This should open new vistas in the understanding of the interplay between cellular structure and function, and is a great example of NIBIB-supported research that moves medical science forward through technological innovation."


'/>"/>

Contact: Cheryl Fee
feech@mail.nih.gov
301-451-6772
NIH/National Institute of Biomedical Imaging & Bioengineering
Source:Eurekalert

Related medicine news :

1. Scientists Make Sweet Monkey Music
2. Scientists from University of Hawaii at Manoa find genetic marker
3. Nottingham scientists commissioned for urgent swine flu research
4. Ellison Medical Foundation awards more than $1 million to mid-career scientists
5. New Federal Training Grant to Teach Doctors/Scientists Immunology
6. Scientists Spot How Sugar Feeds Tumors
7. Argonne, University of Chicago Scientists Develop Targeted Cancer Treatment Using Nanomaterials
8. MSU scientists: Progesterone leads to inflammation
9. Argonne, University of Chicago scientists develop targeted cancer treatment using nanomaterials
10. Pitt scientists find intrinsic changes in protein shape influence drug binding
11. Hard To Treat Diseases (HTDS.PK) Scientists present encouraging results for the future of Multiple Sclerosis treatment.
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/8/2016)... , ... December 08, 2016 , ... STAT courier is ... be a convenient service for Texas, they are expanding their presence in Dallas. One ... hiring spree that will bring new jobs to the Dallas and Forth Worth market. ...
(Date:12/8/2016)... ... 08, 2016 , ... Vida Health, the digital health platform that ... Canvas Ventures . Other investors include Nokia Growth Partners (NGP) and returning investor ... more consumers who are managing chronic conditions or simply want to improve ...
(Date:12/8/2016)... ... December 08, 2016 , ... Peter Zipp Insurance, an ... around the greater Phoenix metropolitan region, is announcing a charity event to provide ... the Homeless Youth Connection is to promote community awareness of the ongoing needs ...
(Date:12/8/2016)... ... 08, 2016 , ... Bill Mull Agencies, a Wichita-based firm ... around central Kansas, is joining the Youth Horizons organization for a charity event ... in Wichita, Youth Horizons works to empower area children from unstable, troubled, or ...
(Date:12/7/2016)... ... December 07, 2016 , ... Kenall Manufacturing, a leader ... MedMaster™ MPCNGX . The MPCNGX is a multi-function, sealed, LED luminaire that meets the ... light where and when it’s needed. , A 2’ x 4’ model ...
Breaking Medicine News(10 mins):
(Date:12/8/2016)... NEW YORK , Dec. 8, 2016 ... ... such as reducing loss of blood during surgeries, lowering the ... surgeries, and decreasing risks of SSIs. The patient warming systems ... and intravascular warming systems.These benefits in turn reduce the stay ...
(Date:12/8/2016)... Dec. 8, 2016 KEY FINDINGS ... grow in 2017-2023. Various reasons for growth of the ... higher incidences of chronic diseases, high recovery cost of ... services. Medical lifting sling refers to an assistive ... mobility. These slings connect to the lift and hold ...
(Date:12/8/2016)... LONDON , Dec. 8, 2016 ... diagnostics includes products and tests that are used ... grass, weed, peanuts, milk, or drugs etc. in ... developed by the immune system. The report on ... future prospects of the market. The report consists ...
Breaking Medicine Technology: