Welcome to the Feldman Laboratory

Research Interests

Multidrug resistant (MDR) infections caused by the bacterial pathogen Acinetobacter baumannii (Ab) are increasing at alarming rates. Today the MDR frequencies among Ab clinical isolates are higher than any other Gram-negative bacterium. For this reason, the World Health Organization has categorized Ab as top priority for the research and development of new antimicrobial therapies. To accomplish this goal, our lab is focused on understanding the following aspects of Ab pathobiology:

1) Cell surface and secretion systems

2) Acinetobacter pathogenesis

In addition of virulence factors produced by Ab, the Feldman Lab also studies outer membrane vesicles (OMVs). OMVs are small spherical structures derived from the outer membranes of Gram-negative bacteria. Bacteroides spp. are prominent components of the human gut microbiota, and OMVs produced by these species are proposed to play key roles in gut homeostasis. OMVs are known to be implied in several biological processes, including host-microbe interactions by facilitating long-distance delivery of virulence factors, modulating the immune response, and contributing to antibiotic resistance. Despite these key roles in bacterial physiology, OMV biogenesis is poorly understood.

3) Outer membrane vesicles