The National Institute of Allergy and Infectious Diseases awarded a $2.4 million R01 grant to Dr. Jiahui Ding at Wayne State University to study how maternal viral infections reprogram the developing fetal immune system. According to the university, the five-year funding supports research at the C.S. Mott Center for Human Growth and Development to uncover why offspring susceptibility to infectious diseases varies across a lifespan when the fetus itself is never directly infected.
Placental Responses and Sex-Dimorphic Immune Reprogramming
The research project, titled “Placental Responses to Maternal Viral Infection Drive Sex-Dimorphic Offspring Immune Reprogramming,” investigates the placenta as a key mediator between maternal illness and fetal development. Scientists still lack a full understanding of how an infection in a pregnant mother alters fetal immune development without direct viral transmission to the fetus. According to Dr. Jiahui Ding, assistant professor of obstetrics and gynecology, the work addresses a major unanswered question in developmental immunology regarding how experiences before birth shape lifetime immune health.
Preliminary laboratory findings indicate that maternal viral infections impair neutrophil function and increase inflammatory sensitivity primarily in male offspring. These results point to sex-specific placental inflammatory pathways during fetal development. The research team aims to identify new biomarkers and therapeutic strategies to lower infection susceptibility and improve health outcomes across generations.
Did you know? The placenta acts as an important immune organ during pregnancy, sensing maternal infections and activating immune responses that help educate the developing fetal immune system.
Cutting-Edge Technologies and Molecular Pathways
Dr. Ding’s team will utilize advanced scientific methods to define the molecular links between maternal infection and lifelong immune function. According to project outlines, the study will examine placental inflammasome activation—specifically IL-1β signaling—and how it reshapes fetal hematopoietic stem cell development to establish long-lasting immune memory.
To capture these cellular changes, researchers will employ single-cell transcriptomics, epigenetic profiling, and an innovative human placenta–fetal interface organ-on-chip model. This multidisciplinary approach builds on earlier work by Dr. Ding involving Zika virus infections during pregnancy, which demonstrated that placental responses differ by fetal sex and correlate with lasting differences in offspring neutrophil function.
Institutional Support and Multidisciplinary Collaboration
The R01 award marks Dr. Ding’s first as a principal investigator in a highly competitive funding environment. School of Medicine Dean Dr. Wael Sakr noted that the milestone reflects both her scientific talent and the collaborative environment at the C.S. Mott Center. Dr. Gil Mor, scientific director of the center, added that the project aligns with ongoing institutional research into the developmental origins of health and disease.
Research cited in this project is supported by the National Institute of Allergy and Infectious Diseases under award number R01AI201310. University leadership, including Vice President for Research and Innovation Dr. Ezemenari Obasi, emphasized the potential for the findings to prevent lifelong health challenges in children exposed to prenatal infections.
Frequently Asked Questions
What is the main goal of Dr. Jiahui Ding’s research grant?
The National Institutes of Health grant funds research to uncover how maternal viral infections during pregnancy reprogram the developing fetal immune system and influence lifelong disease susceptibility.
How does the placenta influence fetal immune development?
According to Wayne State University researchers, the placenta senses maternal infections and activates immune responses, acting as a key mediator that shapes developing fetal immune cells differently based on sex.
What technologies are being used in this study?
The research team utilizes single-cell transcriptomics, epigenetic profiling, and a human placenta–fetal interface organ-on-chip model to study molecular pathways like IL-1β signaling.
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