Table 1. Primer sequences used in the RT-PCR.

F, forward; R, reverse.

Primer	Sequence
CerS1 (F)	5′-ACGCTACGCTATACATGGACAC-3′
CerS1 (R)	5′-AGGAGGAGACGATGAGGATGAG-3′
CerS2 (F)	5′-CCGATTACCTGCTGGAGTCAG-3′
CerS2 (R)	5′-GGCGAAGACGATGAAGATGTTG-3′
CerS4 (F)	5′-CTTCGTGGCGGTCATCCTG-3′
CerS4 (R)	5′-TGTAACAGCAGCACCAGAGAG-3′
CerS5 (F)	5′-GCCATCGGAGGAATCAGGAC-3′
CerS5 (R)	5′-GCCAGCACTGTCGGATGTC-3′
CerS6 (F)	5′-GGGATCTTAGCCTGGTTCTGG-3′
CerS6 (R)	5′-GCCTCCTCCGTGTTCTTCAG-3′
Alkaline ceramidase 1 (F)	5′-GCCTAGCATCTTCGCCTATCAG-3′
Alkaline ceramidase 1 (R)	5′-GGAAGTTGCTCTCACACCAGTC-3′
Alkaline ceramidase 2 (F)	5′-AGTGTCCTGTCTGCGGTTACG-3′
Alkaline ceramidase 2 (R)	5′-TGTTGTTGATGGCAGGCTTGAC-3′
Acid ceramidase (F)	5′-TCTTCCTTGATGATCGCAGAACGCC-3′
Acid ceramidase (R)	5′-ACGGTCAGCTTGTTGAGGAC-3′
XBP-1 (F)	5′-AGTGAGCTGGAACAGCAAGTGGTA-3′
sXBP-1 (R)	5′-ACATGACTGGGTCCAAGTTGTCCA-3′
uXBP-1 (R)	5′-TGCAGAGGTGCACGTAGTCTGAGT-3′
CHOP (F)	5′-CCTCACTCTCCAGATTCC-3′
CHOP (R)	5′-TGTCACTTTCCTTTCATTC-3′
GAPDH (F)	5′-ACGGACTTCCTCGGTGATAC-3′
GAPDH (R)	5′-CGGTGACTGTAGCCATATTCG-3′