Cammie Lesser, MD, PhD


Physician Investigator
Infectious Disease, Massachusetts General Hospital
Associate Professor of Medicine
Harvard Medical School
d'Arbeloff MGH Research Scholar
Massachusetts General Hospital
Associate Physician
Infectious Disease, Massachusetts General Hospital
Affiliate Faculty
Department of Microbiology/Harvard Medical School, Harvard Stem Cell Institute
PhD UC San Francisco School of Medicine 1993
MD UC San Francisco School of Medicine 1995
PhD University of California, San Francisco 1993
bacterial proteins; bacterial secretion systems; eukaryotic cells; genome fungal; microbiome; nanomachines; protein interaction mapping; saccharomyces cerevisiae; shigella flexneri; virulence factors

Most side effects associated with drugs are the result of off-target effects due to drugs being delivered throughout the body as opposed to the specific site of disease.

The Lesser lab proposes to develop designer beneficial bacteria that specifically deliver treatments to sites of disease. To accomplish this, researchers use cutting-edge genetic technology to re-engineer safe and beneficial bacteria and program them to directly secrete protein-based medicines to sites of disease. These bacteria will also be able to recognize and secrete a new class of therapeutic proteins that can bind to and neutralize disease-causing proteins with exquisite specificity.

Through this work the Lesser lab hopes to develop a novel and cost-effective beneficial-bacteria technology to deliver drugs in a safe and effective way to treat and cure a variety of human diseases including infections, autoimmune-based diseases and cancers.