(Charles River Laboratories, Wilmington, MA, USA). After 17 days (when tumour
volume averaged 63mm3) mice were randomised into two groups (each
n=4) and treated orally with either vehicle (0.1% DMSO in 10%
2-hydroxypropyl-β-cyclodextrin; Cayman Chemical, MI, USA) or 6mg/kg
Siponimod (Selleckchem.com, Munich, Germany) every 48h. Mice were culled when
average tumour volumes in control mice reached 400mm3 (28 days).
Organs were weighed, minced and incubated with Liberase DL/Liberase TL and
DNASEI (Roche, Basel, Switzerland) [24 (link)].
Cell suspensions were labelled with mouse CD31 and CountBright absolute counting
beads (Thermofisher Scientific) and analysed by flow cytometry on LSRII and FACS
diva 8 (BD, Franklin Lakes, NJ, USA). Details of the other mouse models tested
are in
and Methods
Office guidelines.