Dr. Yang‘s research interest is on inflammation and sepsis. She has especially focused her work on a novel and exciting cytokine-like molecule called HMGB1. HMGB1 is integral in amplifying inflammation. Currently, Dr. Yang and her team are working on the molecular basis of HMGB1 and its receptor interaction, in order to study how does HMGB1 function as a cytokine. In collaboration with Drs. Kevin J. Tracey and Yousef Al-Abed, Dr. Yang showed that in carrying out its pro-inflammatory functions, TLR4/MD2 receptors have subtle but distinctly different structural requirements for HMGB1, adding to the specificity of events within this broad canvas of inflammation.
In addition, Dr. Yang and her team are using DNA-conjugated beads to sequester HMGB1 in murine colitis in mice, as HMGB1 acts as a cytokine mediator of inflammation in the pathogenesis of inflammatory bowel disease (IBD). Since HMGB1 binds to DNA with high affinity, Dr. Yang has developed oligonucleotides immobilized onto sepharose beads and used them as a novel agent to sequester HMGB1 in treatment of IBDs. Dr. Yang and her team observed that oral administration of DNA-containing beads reduced the weight loss of IL-10 knockout mice with spontaneous colitis, ameliorated colon injury, reduced levels of serum HMGB1 compared with mice treated with empty beads (no DNA). This data suggest a therapeutic potential for DNA beads to sequester HMGB1 in inflammatory bowel diseases.
Dr. Yang has been collaborating with Dr. Kevin J. Tracey and members of Tracey Lab, Drs. Haichao Wang, Yousef Al-Abed, Lionel Blanc, Betty Diamond, Jesse Roth, Ping Wang and many scientists outside the Feinstein Institutes.