blood were collected with informed consent; patient clinical characteristics
outlined in
Methods
previously described [17 (link)].
Cell lines were obtained from ECACC™ (Salisbury, UK) or ATCC
(Middlesex, U.K.) and cultured under recommended conditions. The genetic
identity of the cell lines was confirmed by short tandem repeat (STR). Cells at
passages greater than twenty were not used in the experiments performed in this
study. Monitoring for Mycoplasma contamination was performed using the MycoAlert
Detection Kit (Sigma). S100A4 harboring a nuclear localization sequence (NLS)
was expressed utilizing retroviral and lentiviral vectors co-expressing GFP as a
selectable marker (
Mission® shRNA vectors based on TRC(1)2-pLKO.5-puro
(S100A4 shRNA and non-mammalian shRNA control) were purchased from
Sigma-Aldrich, Dorset, U.K. CD34+ cells and cell lines were
transduced and cultured as previously described [17 (link),18 ].