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2015 ; 14
(12
): 1948-60
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English Wikipedia
Cyclin A1 regulates the interactions between mouse haematopoietic stem and
progenitor cells and their niches
#MMPMID25785996
Miftakhova R
; Hedblom A
; Batkiewicz L
; Anagnosaki L
; Zhang Y
; Sjölander A
; Wingren AG
; Wolgemuth DJ
; Persson JL
Cell Cycle
2015[]; 14
(12
): 1948-60
PMID25785996
show ga
It remains poorly understood how the haematopoietic stem/progenitor cells (HSPC)
are attracted to their niches and the functional consequences of such
interaction. In the present study, we show that the cell cycle regulator cyclin
A1 in association with vascular endothelial growth factor receptor 1 (VEGFR1), is
required for HSPC and their niches to maintain their function and proper
interaction. In the absence of cyclin A1, the HSPC in the BM are increased in
their frequency and display an increased migratory and homing ability.
Concomitantly, the ability of the endosteal and central BM niche zones to attract
and home the wild-type HSPC is significantly reduced in cyclin A1-null mice as
compared to the wild-type controls. The impaired proliferation and homing of HSPC
in the BM of cyclin A1-null mice are attributed to the increased density of
microvessels in the endosteal and central BM niche zones, which is associated
with the increased VEGFR1 expression. Thus, modulation of cyclin A1 and VEGFR1 in
HSPC and their niches may provide new insights into therapeutic approaches.