|
|
 |
 |
This overview encompasses major areas of research, core technologies,
resources offered by NCMIR, and
collaborative activities.
A key emphasis of the National Center for Microscopy and Imaging Research (NCMIR) is the application of advanced imaging technologies to the nervous system in health and disease.
Affiliated with UCSD’s Center for Research in Biological Systems (CRBS), the NCMIR is a recognized authority in the development of technologies for high throughput multi-scale imaging and analysis of biological systems at the mesoscale, the dimensional range spanning 5 nm3 and 50µm3. Macromolecules, organelles, and multi-component structures like synapses which are encompassed in this dimensional range have traditionally been challenging to study because they fall in the resolution gap between X-ray crystallography at one end and medical imaging at the other.
While maintaining a focus on neurobiology, NCMIR also conducts research that addresses the cellular and molecular underpinnings of biological systems relevant to cancer, diabetes, and heart disease, to name a few. NCMIR welcomes requests for collaborative projects that will drive development in its core research areas designed to develop and enhance technologies, including
- novel and traditional specimen preparation
methods for intermediate voltage electron microscopy (IVEM) and
correlated microscopies
- computer-aided methods for the acquisition of data from the microscopes
- enhancement of image contrast
and extraction of accurate 3D information from
biological specimens prepared for light and electron
microscopy
- reconstruction of larger structural complexes using electron tomography and correlated microscopies
NCMIR also maintains a strong research
program in computational biology and informatics through
affiliated projects. As a leader in the
development of informatics resources for microscopic
imaging information, NCMIR makes the Cell Centered Database
( CCDB)
available to the scientific community. NCMIR plays
a key role in the Biomedical Informatics Research
Network ( BIRN)
initiative and is associated with the Center for Research
in Biological Systems ( CRBS)
at UCSD. It is a significant domain driver of the
California Institute of Telecommunications and Information
Technology ( Cal-IT2)
and the San Diego Supercomputer Center ( SDSC).
NCMIR pursues a coordinated, three-pronged approach to achieving its goals of imaging biological systems on a grand scale, focusing core technology development in three areas:
- biological specimen development for intermediate voltage electron microscopes (IVEMs) and correlated microscopies
- instrumentation, including IVEM, camera development, and Telemicroscopy
- advanced software infrastructure applications and database development
These core technologies are detailed here.
NCMIR
Offers As a technology development center and P41 resource, NCMIR makes available for use intermediate voltage electron microscopes (IVEMs) and associated technologies for correlated microscopy, 3D reconstruction, and visualization, as well as advice and training in the application of these technologies. For a comprehensive listing of NCMIR resources available to outside users, refer to the Resources page. The facilities are open to visiting scientists and scientists in the Southern California area through collaborative, service, and training programs.
In addition to on-site technologies, NCMIR serves as a resource of resources, offering full remote access to rare and powerful high voltage electron microscopes including IVEMs and other unique high voltage electron microscopes around the world, such as the 3 MeV ultra high-voltage electron microscope at Osaka University in Japan, and the 1 MeV energy filtering JEOL high voltage electron microscope at the Korean Basic Sciences Institute in Seoul, Korea. NCMIR provides access to these instruments and an associated grid of richly integrated computational resources for performing electron tomography via the Internet through Telescience.
Researchers interested in using NCMIR technologies
and facilities should complete the online User
Application form.
For further information, contact the main office
at (858) 534-0276.
Collaboration
and Service
NCMIR delivers advanced capabilities to the
biomedical research community through the interfacing
of custom designed intermediate voltage electron microscopes
(IVEMs) and light microscopes with advanced computational
and graphics facilities. Technology development is
driven by the needs of specific biological projects
for specimen preparation, 3D investigations, and enhancement
of microscopic imaging modes or computational tools.
Biological projects are brought to NCMIR through an
expanding collaborative and service research program.
NCMIR accepts requests for collaborative and service
projects from outside users who require the advanced
technologies NCMIR offers. Collaborative projects
usually require significant involvement of NCMIR staff
who will expand an already active area of technological
research and development to accommodate new research
endeavors. Service projects typically involve use
of existing NCMIR facilities or technologies and do
not require extensive resource staff involvement.
For both types of projects, NCMIR provides the necessary
training for visiting researchers to employ technology
independently in their own laboratories. If a project
requires significant staff resources, one or more
NCMIR members are usually listed as co-authors on
published works. For service projects, attribution
of NCMIR’s contribution should be provided in
the acknowledgements, but no authorship is expected.
Examples of collaborative projects driving technology development include
- examining neurogenesis in the adult hippocampus
- studying the trafficking of membrane proteins using correlated microscopies
- exploring in situ structure of supramolecular complexes using electron tomography
- creating computational models of synaptic structure based on tomographic reconstructions
- redefining mitochondrial structure in health and disease
- investigating spine morphologies in an animal model of mental retardation
- uncovering synaptic alterations resulting from an episode of transient ischemia
For additional information on accessing NCMIR technologies, see the User
Application form.
Return to top of page.
|
 |
|  |
Publications
The multidisciplinary work of NCMIR researchers and their collaborators have been published in a variety of journals and presented in local, national, and international forums. Search here for journal articles, abstracts, and covers from 1991 through the present.
Highlights
Research milestones are presented in the highlights
section.
3D Mouse Model Reveals Complex Structures of the Node of Ranvier
NCMIR researchers, in collaboration with the Salk Institute, have created a 3D model of the node of Ranvier, a complex structure found in the nervous system of higher vertebrates. The results will be published in an upcoming issue of Neuroinformatics... more
Tomography Method Improves Resolution in Thick Samples
A novel method for acquiring data for electron tomography dramatically increases resolution and usable section thickness of stained samples... more
Astrocytes Limit CNS Regeneration
Investigators at Göteborg University and the University of Southern California found astrocytes play a significant role in limiting the regenerative capacity of the central nervous system... more

Purkinje Cell's Microenvironment May Be Regulated by Cerebellar Structure A recent collaboration between NCMIR and the New York University Medical Center found that a cerebellar structure called the pinceau may regulate the microenviroment of the initial segment of the Purkinje cell axon... more
Astrocytes Change During Postnatal Brain Development
Unique astrocyte territories in the adult brain are likely formed through competition between astrocyte processes, similar to the competitive interactions among neuronal dendritic fields... more

BioWall Displays Large Images of the Brain
NCMIR's newly installed "BioWall" tiled display, a 20-tile wall of high-resolution flat-panel displays that project massive, detailed 2D and 3D images of the brain, allows scientists to explore relationships among subcellular components, cells, and cellular networks at unprecedented resolution. more |
|