Research Interests
Immune-mediated Inflammatory Diseases (IMIDs) are a group of diseases involving inappropriate or excessive immune responses caused or accompanied by cytokine dysregulation and acute or chronic inflammation. This includes a wide variety of illness, such as autoimmune diseases, infection, and inflammation-related cancer. T lymphocytes and macrophages are major immune cells which mediate inflammatory responses and play important role against infection, tumor and autoimmune diseases. (1) Na?ve T lymphocytes use surface T-Cell-Receptor (TCR) or chemokine receptor to generate the “inside-out” signaling pathway to enhance integrin activity and cell adhesion. This enables T cell migration at the right time to the right places. At the local inflammation sites, T cells differentiate into different T-cell subsets including Tregs, Th1, Th17 or CD8+ CTLs et al, which mediate immune responses against infection or the development of autoimmune diseases. (2) Macrophages use Toll-like receptors and other receptors to sense invading pathogens and activate various transcription factors such as NF-kB or IRFs. This leads to secretion of pro-inflammatory cytokines (IL-6, IL-1, TNF-alpha), anti-inflammatory cytokine (IL-10) or anti-viral cytokines (IFNs), which are essential to control infection or for the development of inflammation-related cancers.
We are interested in the following research projects.
(1) Na?ve T lymphocytes generate the “inside-out” signaling pathway to enhance integrin activity and cell adhesion. Integrins also send “outside-in” signaling for cell-ECM or cell-cell adhesion, and cell proliferation, differentiation, or homing. We would like to identify new signaling proteins regulating “inside-out” and “outside-in” signaling pathways in T cells.
(2) Identify new signaling molecules in macrophages that mediate inflammation responses and phagocytosis during bacterial infection.
(3) The physiological and pathological relevance of immune-cell mediated inflammation in autoimmune disease, infection, cancer or tissue repair.