Dr. Liu, Fu-Tong 's publons link picture

Dr. Liu, Fu-Tong

Corresponding Research Fellow
Academician, Academia Sinica
  • 02-2652-3056 (Office)

  • Galectins
  • Allergic Inflammation
  • Immune-mediated dermatoses

Education and Positions:
    • Ph.D. University of Chicago
    • M.D. University of Miami, School of Medicine

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Galectin-3 is critical for the development of the allergic inflammatory response in a mouse model of atopic dermatitis

Dr. Liu, Fu-Tong
American Journal of Pathology, Mar 01, 2009

Galectin-3 belongs to a family of beta-galactoside-binding animal lectins expressed in several cell types, including epithelial and immune cells. To establish the role of galectin-3 in the development of allergic skin inflammation, we compared inflammatory skin responses of galectin-3-deficient (gal3(-/-)) and wild-type (gal3(+/+)) mice to epicutaneous sensitization with ovalbumin (OVA). OVA-treated gal3(-/-) mice exhibited markedly reduced epidermal thickening, lower eosinophil infiltration, and lower serum IgE levels compared with gal3(+/+) mice. The former evoked lower interleukin-4, but higher interferon-gamma, mRNA expression at OVA-treated skin sites. Moreover, gal3(-/-) splenocytes from OVA-sensitized mice secreted more interleukin-12 compared with gal3(+/+) splenocytes. In addition, antigen presentation by gal3(-/-) dendritic cells to T cells in vitro were T helper cell (Th1)-polarized relative to presentation by gal3(+/+) dendritic cells. When exposed to OVA, recipients engrafted with T cells from gal3(-/-) OVA-specific T cell receptor transgenic mice developed significantly reduced dermatitis and a markedly lower Th2 response compared with recipients of comparable gal3(+/+) T cells. We conclude that galectin-3 is critical for the development of inflammatory Th2 responses to epicutaneously administered antigens; in its absence, mice develop a Th1-polarized response. This regulatory effect of galectin-3 on Th development is exerted at both the dendritic cell and T cell levels. Our studies suggest that galectin-3 may play an important role in the acute phase of human atopic dermatitis.