729 IMMUNOREGULATION BY BREAST MILK CELLS

[Immunoregulation by iNKT cells].

NKT cells are defined as cells co-expressing of the natural killer receptors such as NK1.1 or NKR-P1A (CD161) and a T cell receptor (TCR). Although NK1.1(+) TCR(+) lymphocytes are heterogeneous, we focus on two distinct T cell subsets express invariant T cell receptor alpha chains, Valpha14-Jalpha18(Valpha14i) and Valpha19-Jalpha33(Valpha19i). Valpha14i NKT cells (Valpha24i NKT cells for human)...

Mediation of Immunoregulation by Dendritic Cells

Mesenchymal stem cells in immunoregulation.

Mesenchymal stem cells are present within the bone marrow cavity and serve as a reservoir for the continuous renewal of various mesenchymal tissues. Recent studies suggest that mesenchymal stem cells modulate immune reactions in vitro and escape from immune surveillance in vivo. We provide herein a discussion of issues including the current research progress on the in vitro interactions of mese...

Antimicrobial properties of preterm breast milk cells.

The antimicrobial properties of preterm and term breast milk cells were compared. They were similar in cell numbers and in the capacity to phagocytose and kill staphylococci. Interferon production on endotoxin challenge appeared to be higher in preterm cells. The antibacterial activity of breast milk cells was retained after storage at 4 degrees C for 24-48 hours. Cell numbers were unaffected b...

729-electric Gene Transfer into Culture Cells *

The electric field method of gene transfer via electroporation of cell membranes is gaining importance in cellular and molecular biology. In particular the electroporation technique provides the low copy number transfection required fqr genetic studies. As demonstrated with mouse lyoma cells, with lymphoid cell lines and with plant protoplast, the electric method has appreciable advantages comp...