Polysaccharides of Ganoderma lucidum alter cell immunophenotypic expression and enhance CD56+ NK-cell cytotoxicity in cord blood.
In our previous study, a fucose-containing glycoprotein fraction (F3), isolated from the water-soluble extracts of Ganoderma lucidum, was shown to stimulate mice spleen cell proliferation and cytokine expression. We now further investigate the effect of F3 on the immunophenotypic expression in mononuclear cells (MNCs). When human umbilical cord blood (hUCB) MNCs were treated with F3 (10-100 microg/mL) for 7days, the population of CD14+CD26+ monocyte/macrophage, CD83+CD1a+ dendritic cells, and CD16+CD56+ NK-cells were 2.9, 2.3, and 1.5 times higher than those of the untreated controls (p<0.05). B-cell population has no significant change. T cell growth was, however, slightly inhibited and CD3 marker expression decreased approximately 20% in the presence of higher concentrations of F3 (100 microg/mL). We also found that F3 is not harmful to human cells in vitro, and after F3 treatment, NK-cell-mediated cytotoxicity was significantly enhanced by 31.7% (p<0.01) at effector/target cell ratio (E/T) 20:1, but was not altered at E/T 5:1.
Institute of Biological Chemistry and the Genomics Research Center, Academia Sinica, Nankang, Taipei 115, Taiwan.
Chichen Michael
CM
Chien
Jing-Long
JL
Cheng
Wen-Teish
WT
Chang
Ming-Hsun
MH
Tien
Chien-Ming
CM
Tsao
Yung-Han
YH
Chang
Hwan-You
HY
Chang
Jung-Feng
JF
Hsieh
Chi-Huey
CH
Wong
Shui-Tein
ST
Chen
D019002:CD56 Antigen / Q000096:biosynthesis*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D003602:Cytotoxicity, Immunologic / Q000187:drug effects*; D005312:Fetal Blood / Q000166:cytology / Q000187:drug effects / Q000276:immunology*; D006801:Humans; D007155:Immunologic Factors / Q000302:isolation & purification / Q000494:pharmacology*; D016130:Immunophenotyping; D007694:Killer Cells, Natural / Q000187:drug effects / Q000276:immunology* / Q000378:metabolism*; D008213:Lymphocyte Activation / Q000187:drug effects; D011134:Polysaccharides / Q000302:isolation & purification / Q000494:pharmacology*; D020940:Reishi
D019002:CD56 Antigen; D007155:Immunologic Factors; D011134:Polysaccharides