Nancy L. Allbritton

Nancy Allbritton

Professor & Chair, UNC/NC State Department of Biomedical Engineering

Paul Debreczeny Distinguished Professor
Department of Chemistry 

Director, Curriculum of Applied Science and Engineering

M.D., Medicine
Johns Hopkins University, Baltimore, MD

Ph.D., Medical Physics/Medical Engineering
Massachusetts Inst. of Tech., Cambridge, MA

biosketch [.pdf]

Allbritton Lab Website
Joint Department of Biomedical Engineering
Chemistry Department

Lineberger Comprehensive Cancer Center

Contact Information  ->>

Research Interests

  • Signaling in Single Cells
  • Microfabricated Systems for Cellular Analysis
  • Organ on Chip

Research Synopsis

Research program in the Allbritton lab is a multidisciplinary effort that brings to bear principles and techniques from chemistry, physics, engineering, and materials science to develop new assays and technologies for biomedical applications. The ongoing work in the lab comprises three major focus areas: 1) analytical techniques for single-cell biochemical assays, 2) microfabricated platforms for sorting and cloning cells, and 3) microengineered systems for recapitulating organ level function. Many of the lab's projects and extensive collaborations within these focus areas involve the development and application of new technologies for oncology and stem cell research.

Analytical Techniques for Single-Cell Biochemical Assays

The advent of effective pharmacologic compounds targeting specific signaling pathways for clinical applications has created a demand for enzymatic assays that can be performed on single cells in disease models and patient samples. Biochemical analyses of aberrant signaling pathways are now needed to direct the best treatment option as well as to assess treatment efficacy in individual patients. The goal of this research effort is to produce the instrumentation and chemical tools needed to directly assess the catalytic activity of kinases and other signaling molecules in living cells from disease models and cancer patients.

The lab has a long history in developing novel technologies using highly sensitive analytical methods including capillary- and microfluidic-based electrophoresis. Current research efforts are directed at the design and development of biochemical substrates using peptide and lipid chemistry to create reporters of cellular signal transduction. Instrumental advances in the areas of high-throughput single-cell analysis and lab-on-a-chip platforms for cell-based assays are also an active area of research and development. The ability to identify multiple aberrant signaling pathways simultaneously in a patient's tumor would enable individualization of multiple targeted therapies for that patient and offer the hope of developing individualized and improved therapies to supplant the existing standard of care.

Microfabricated Platforms for Sorting and Cloning Cells

The lab has pioneered the development of novel microfabricated cell-array platforms to enable the analysis and isolation of cells while they remain on a culture substrate. Cells can be monitored at single or multiple time points and selected based on a wide range of criteria including morphology, fluorescence signatures, subcellular attributes, growth properties, and other time-dependent characteristics. These arrays are produced dewetting methods to form molded rafts on a poly(dimethylsiloxane) base. Individual rafts are selectively detached employing a microneedle. These arrays can be made in almost any size, for instance millimeter-sized arrays for use with total sample sizes of hundreds to a few thousand cells (e.g. needle biopsies), to arrays of many centimeters with millions of culture sites for high-throughput screening of rare cell populations (e.g. circulating tumor cells). Numerous biomedically relevant applications of these microfabricated cell arrays are being pursued including efficient cloning of murine embryonic stem cells for improved methods to create genetically engineered animals, isolation of cytolytic T lymphocytes based on their ability to kill tumor cells, and purification of circulating tumor cells and cancer stem cells from patient samples.

Microengineered Systems for Recapitulating Organ Level Function

The ability to monitor and control the environment at the cellular and tissue level is one of the most promising applications for microengineered systems. "Organ-on-a-chip" platforms provide exquisite control of experimental variables, yet recapitulate much of the physiology of an intact organ. The lab is pursuing development and application of microTAS devices to recapitulate the microenvironments of the intestine. Purified intestinal stem cells or intestinal crypts are used to re-create on shaped arrays and contain the differentiated cell lineages as well as stem cells. Methods to create gradients across these tissues are being developed to mimic the chemical gradients thought to exist in vivo. The intestinal fluidic chips will make it feasible to combine cellular components from different genetically engineered mice for fundamental studies of intestinal biology, use in drug screening, and applications in toxicology.



Click here for list of pubmed publications.

Contact Information

Chapman Hall, Rm 241                                       
Campus Box 3216                                                
University of North Carolina                               
Chapel Hill, NC  27599-3216

Fax: 919-962-2388


4140 Engineering Building III   
North Carolina State University
Campus Box 7115
Raleigh, NC  27695-7115

Phone: 919-515-0724,


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