title: Flow cytometric analysis of cell-surface antigen expressions on acute myeloid leukemia cell populations according to their cell-size.
abstract: Acute myeloid leukemia (AML) cells which expanded from a single leukemic cell show certain degrees of morphological and biological heterogeneity. In the present study, we determined cell-surface antigen expressions (CD13, 33, 34 and 38, and HLA-DR) on AML cells based on their cell-size (large vs small cells) by flow cytometry. We found that the cell-surface antigens were more strongly expressed on the large leukemic cells than the small cells, regardless of FAB subtypes. Furthermore, our preliminary study demonstrated that AML patients who showed a relatively small difference in antigen expression between large and small leukemic cells had longer remission durations and survival periods, compared with those with a more prominent difference in antigen expression. Thus, the heterogeneity of AML cells determined by the combination of cell-surface antigen expressions and cell-size may be associated with clinically important biological behaviors.
authors.affiliation: Fourth Department of Internal Medicine, Tokai University School of Medicine, Kanagawa, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kawada
authors.forename: Y
authors.initials: Y
authors.lastname: Ichikawa
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Nagao
authors.forename: S
authors.initials: S
authors.lastname: Arimori
mesh_terms: D000328:Adult; D000368:Aged; D015703:Antigens, CD / Q000378:metabolism; D000954:Antigens, Surface / Q000378:metabolism*; D048429:Cell Size; D005260:Female; D005434:Flow Cytometry; D006684:HLA-DR Antigens / Q000378:metabolism; D006801:Humans; D015470:Leukemia, Myeloid, Acute / Q000276:immunology* / Q000401:mortality / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D015996:Survival Rate
chemical_list: D015703:Antigens, CD; D000954:Antigens, Surface; D006684:HLA-DR Antigens