CYTOGENETIC STUDIES OF NONLYMPHOCYTIC NEOPLASIAS USING HEMATOPOIETIC GROWTH-FACTORS - GM-CSF PROVIDES PRONOUNCED MITOTIC INCREASE AND IMPROVEMENT OF THE QUALITY OF BANDED CHROMOSOMES COMPARED TO G-CSF
H. Nakamura et al., CYTOGENETIC STUDIES OF NONLYMPHOCYTIC NEOPLASIAS USING HEMATOPOIETIC GROWTH-FACTORS - GM-CSF PROVIDES PRONOUNCED MITOTIC INCREASE AND IMPROVEMENT OF THE QUALITY OF BANDED CHROMOSOMES COMPARED TO G-CSF, Leukemia, 7(9), 1993, pp. 1471-1475
Thirty patients with a variety of non-lymphocytic neoplasias were stud
ied cytogenetically using short-term liquid cultures of bone marrow or
peripheral blood cells with or without either granulocyte colony-stim
ulating factor (G-CSF) or granulocyte-macrophage CSF (GM-CSF). The fin
al concentration of these growth factors was 10 ng/ml and the duration
of culture was 48 h, since these provided optimal increases in mitoti
c index (MI). In GM-CSF-stimulated culture, 23 out of the 30 patients
(77%) had a significantly (p < 0.05) higher MI than that in unstimulat
ed culture, whereas only five (17%) did so in G-CSF-stimulated culture
. The quality of banded chromosomes was considerably good in 17 out of
the 30 patients (57%) with GM-CSF, whereas it was so only in two (7%)
and three (10%) patients with no CSF and G-CSF, respectively. Of the
30 patients, 27 (90%) had the same chromosomal findings with G-CSF/GM-
CSF as without CSF, but the remaining three (10%) showed a remarkable
change after stimulation. Culture for 72 h with G-CSF or GM-CSF disclo
sed a minor abnormal clone which was undetected in 24 and 48 h culture
s in a patient with myelofibrosis with myeloid metaplasia. Thus, compa
red with G-CSF, adding GM-CSF to cell culture may be useful for cytoge
netic studies of non-lymphocytic neoplasias. The chromosomal findings
may, however, be changed by these growth factors for some patients.