Quantitative PCR was performed using the Rotor-Gene SYBR Green PCR kit (Qiagen, Hilden, Germany), The primer sequences used include RelB: forward, 5′-GTTCCAGTGACCTCTCTTCC-3′, reverse, 5′-CCAAAGCCGTTCTCCTTAATGTA-3′,18 (link)Maf forward, reverse,18 (link)GM-CSFRα: forward, 5′-CTGATGTCATGAAGCGATGC-3′, reverse, 5′-TCACGGTGACATCAATGTCG-3′,19 (link)PU.1: forward, 5′-GATGGAGAAGCTGATGGCTTGG-3′, reverse, 5′-TTCTTCACCTCGCCTGTCTTGC-3′,20 (link)C/EBPα: forward, 5′-TGGACAAGAACAGCAACGAGTAC-3′, reverse, 5′-GCAGTTGCCCATGGCCTTGAC-3′21 (link) and GAPDH: forward, 5′-TCCACCACCCTGTTGCTGTA-3′, reverse, 5′-AATGTGTCCGTCGTGGATCT-3′. The rotor-gene Q (2plex on PC) instrument (Qiagen) was programmed as follows: 95 °C for 10 min, then 50 cycles of 95 °C for 10 s, 60 °C for 15 s and 72 °C for 20 s. The data were analyzed using rotor-gene Q series software through the delta–delta CT method.22 (link)