Leukemia inhibitory factor as a regulator of steroidogenesis in human NCI-H295R adrenocortical cells.
Leukemia inhibitory factor (LIF) is a multiple function cytokine regulating the hypothalamic-pituitary-adrenal axis at the pituitary level. LIF and its receptor are expressed in the adrenal glands, suggesting their potential regulatory role also at the adrenal level. Our aim was to clarify the effects of LIF on adrenal steroidogenesis using cell culture conditions. NCI-H295R human adrenocortical cells were treated with LIF (0.01-100 ng/ml) for 3-48 h with or without 8-bromo-cAMP (8-Br-cAMP; 1 mM). LIF treatment augmented cortisol, dehydroepiandrosterone (DHEA), DHEA sulfate, androstenedione, and aldosterone production (up to 224, 211, 149, 229, and 170% of control respectively, P<0.05 for all). It increased basal steroidogenic acute regulatory protein (STAR) and 17alpha-hydroxylase/17,20-lyase (CYP17A1) mRNAs (up to 142 and 170% of control respectively, P<0.05) and the respective proteins, but decreased 3beta-hydroxysteroid dehydrogenase type 2 (HSD3B2) mRNA (down to 72% of control, P<0.05), and protein. LIF also increased 8-Br-cAMP-induced cortisol and DHEA production and STAR mRNA accumulation, while it attenuated 8-Br-cAMP-induced HSD3B2 expression and androstenedione production. It had an additive effect on tumour necrosis factor-induced cortisol production. LIF had no effect on apoptosis, but it increased slightly the number of metabolically active cells (up to 120% of control, P<0.05). These findings indicate that LIF is a potential physiological and/or pathophysiological regulator of steroidogenesis at the adrenal level.
Mikhaylova
Irina V
IV
Department of Pediatrics, Kuopio University and University Hospital, PO Box 1777, FI-70211 Kuopio, Finland.
Jääskeläinen
Tiina
T
Jääskeläinen
Jarmo
J
Palvimo
Jorma J
JJ
Voutilainen
Raimo
R
D015096:3-Hydroxysteroid Dehydrogenases / Q000235:genetics; D015124:8-Bromo Cyclic Adenosine Monophosphate / Q000494:pharmacology; D000302:Adrenal Cortex / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D000450:Aldosterone / Q000378:metabolism; D000735:Androstenedione / Q000096:biosynthesis; D017209:Apoptosis / Q000187:drug effects; D015153:Blotting, Western; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D003687:Dehydroepiandrosterone / Q000096:biosynthesis; D019314:Dehydroepiandrosterone Sulfate / Q000378:metabolism; D005786:Gene Expression Regulation / Q000187:drug effects; D006801:Humans; D006854:Hydrocortisone / Q000096:biosynthesis; D053605:Leukemia Inhibitory Factor / Q000378:metabolism*; D010750:Phosphoproteins / Q000235:genetics; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000235:genetics; D013254:Steroid 17-alpha-Hydroxylase / Q000235:genetics; D000098682:Steroidogenic Acute Regulatory Protein
D053605:Leukemia Inhibitory Factor; D010750:Phosphoproteins; D012333:RNA, Messenger; D000098682:Steroidogenic Acute Regulatory Protein; D015124:8-Bromo Cyclic Adenosine Monophosphate; D000735:Androstenedione; D003687:Dehydroepiandrosterone; D000450:Aldosterone; D019314:Dehydroepiandrosterone Sulfate; D015096:3-Hydroxysteroid Dehydrogenases; D013254:Steroid 17-alpha-Hydroxylase; D006854:Hydrocortisone