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Titolo:
CHRONIC MYELOGENOUS LEUKEMIA CD34(-CYCLE MORE RAPIDLY THAN NORMAL MARROW CD34(+) CELLS() CELLS EXIT G(0)G(1) PHASES OF CELL)
Autore:
TRAYCOFF CM; HALSTEAD B; RICE S; MCMAHEL J; SROUR EF; CORNETTA K;
Indirizzi:
INDIANA UNIV,SCH MED,BONE MARROW TRANSPLANT PROGRAM,DIV HEMATOL ONCOL,1044 W WALNUT ST,R4-202 INDIANAPOLIS IN 46202 INDIANA UNIV,SCH MED,INDIANA ELKS CANC RES CTR INDIANAPOLIS IN 46202 INDIANA UNIV,SCH MED,DIV MICROBIOL & IMMUNOL INDIANAPOLIS IN 46202 INDIANA UNIV,SCH MED,DIV MED & MOL GENET,DEPT MED INDIANAPOLIS IN 46202 INDIANA UNIV,SCH MED,HERMAN B WELLS CTR PEDIAT RES,DEPT PEDIAT INDIANAPOLIS IN 46202
Titolo Testata:
British Journal of Haematology
fascicolo: 3, volume: 102, anno: 1998,
pagine: 759 - 767
SICI:
0007-1048(1998)102:3<759:CMLCMR>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEMATOPOIETIC PROGENITOR CELLS; CHRONIC MYELOID-LEUKEMIA; MEDIATED GENE-TRANSFER; COLONY-STIMULATING FACTOR; BCR-ABL; PHILADELPHIA-CHROMOSOME; IN-VITRO; PROLIFERATION; APOPTOSIS; GROWTH;
Keywords:
CHRONIC MYELOGENOUS LEUKEMIA; CELL CYCLE; APOPTOSIS; PROLIFERATION; CYTOKINES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
C.M. Traycoff et al., "CHRONIC MYELOGENOUS LEUKEMIA CD34(-CYCLE MORE RAPIDLY THAN NORMAL MARROW CD34(+) CELLS() CELLS EXIT G(0)G(1) PHASES OF CELL)", British Journal of Haematology, 102(3), 1998, pp. 759-767

Abstract

To investigate the mechanisms behind the leukaemic expansion of chronic myelogenous leukaemia (CML), we examined the cell cycle status and activation kinetics of purified subpopulations of CD34(+) cells from normal and CML bone marrow (BM). Propidium iodide staining was used to assess cell cycle status of fresh cells or those stimulated with cytokines. Although the cell cycle status of fresh low-density cells from CML and normal BM was similar, a larger percentage of CML CD34(+) cellswere cycling than those from normal BM. The HLA-DR- compartment of CML CD34(+) cells, a fraction enriched for normal, non-leukaemic progenitors. contained a higher percentage of quiescent cells than the CD34(+) HLA-DR+ fraction. When the activation of CD34(+) cells was examined in response to SCF or IL-3 alone, or SCF+IL-3+IL-6, CML CD34(+) cells exited G(0)/G(1) more rapidly than normal CD34(+) cells. Interestingly, although normal BM CD34(+) cells failed to cycle in response to IL-6alone, or in the absence of exogenous cytokines, 30% of CML cells cycled under these conditions. No differences in the degree of apoptosis were documented among CML and normal CD34(+) cells in these cultures. These data suggest that enhanced cell cycle activation of CML CD34(+) cells, by either autocrine stimuli or via enhanced sensitivity to exogenous stimuli, may be partially responsible for the pronounced cellular expansion characteristic of CML.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 15:48:51