06/13/2026
Collaborative research led by Bon Trinh, PhD, and Trinh lab postdoctoral associates A.S.M. Waliullah, PhD, and An Nguyen, PhD, identified a circuit that helps control the development and immune functions of two vital types of white blood: monocytes and macrophages.
Dr. Trinh and researchers from School of Medicine at the University of Virginia, Harvard Medical School, Tufts University School of Medicine, and VCU School of Medicine on the MCV Campus used advanced genomic analyses and cell modeling to understand how the blood cell-regulating proteins, PU.1 and C/EBPα, work together with a molecule discovered by Dr. Trinh, LOUP, to drive immune cell development, function, and identity.
Their work revealed that the C/EBPα protein initiates a circuit, wherein the PU.1 protein and the LOUP molecule activate and support each other, guiding white blood cell formation and differentiation as monocytes and macrophages. They also found that when LOUP levels were reduced, white blood cells displayed compromised maturation, attenuated inflammatory signaling, and weakened phagocytic function.
The findings, published in the American Society of Hematology's scientific journal, Blood, advance our understanding of how the immune system is programmed and the effects of abnormal white blood cell development. “Because abnormal PU.1 and C/EBPα activity has been linked to blood cancers and immune disorders, the newly identified PU.1–LOUP regulatory circuit may offer promising new directions for research into inflammatory diseases and myeloid malignancies such as leukemia,” Dr. Trinh said.
Read more about Dr. Trinh’s research: https://news.med.virginia.edu/research/multi-institutional-study-led-by-bon-trinh-phd-uncovers-genetic-control-circuit-that-shapes-key-immune-cells/