Cycloheximide stimulates suppressor of cytokine signaling-3 gene expression in 3T3-L1 adipocytes via the extracellular signal-regulated kinase pathway

Chang, Hsin Huei; Tsai, P.H.; Liu, Chi Wei; Ku, Hui Chen; Kao, Chung Cheng; Kao, Ying-Jer

doi:10.1016/j.toxlet.2012.12.002

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…GAPDH mRNA levels were determined in parallel reactions for normalization. The relative expression of SOCS transcripts to GAPDH transcript was calculated as described elsewhere 37,38 and then expressed as a fold or percentage of the control. To validate the amplification specificity of the primers for qRT-PCR, a dissociation curve analysis performed from 60°C to 95°C at a rate of 0.1°C/s after the PCR indicated a single peak for RETN , TLR4 , SOCS3 , SOCS5 , SOCS7 , or GAPDH (Supplemental Figure S1).…”

Section: Methodsmentioning

confidence: 99%

Resistin stimulates PC-3 prostate cancer cell growth through stimulation of SOCS3 and SOCS5 genes

Liu,

Peng,

Siao

et al. 2023

Exp Biol Med (Maywood)

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Resistin and suppressors of cytokine signaling (SOCSs) have been reported to regulate prostate cancer (PCa) cell proliferation and survival, respectively. Whether any of the SOCS molecules mediate the mitogenic effect of resistin on PCa cells is unknown. Using PC-3 human PCa cells, we found that resistin upregulates the expression of SOCS3 and SOCS5 mRNA, but not SOCS7 mRNA, in a dose- and time-dependent manner. The resistin-induced increases in SOCS3 and SOCS5 expression and cell proliferation were prevented by pretreatment with specific inhibitors of the TLR4, ERK, p38 MAPK, JNK, PI3K, and JAK2 proteins. However, pretreatment with a TLR2 inhibitor had no effect on resistin-mediated SOCS3 and SOCS5 expression. In addition, the effects of resistin on SOCS3, SOCS5, and SOCS7 mRNA levels were cell type-specific. Overexpression of either SOCS3 or SOCS5 enhanced further resistin-stimulated growth of PC-3 cells, whereas silencing SOCS3 or SOCS5 antagonized resistin-increased cell growth. Further PCa tissue analysis demonstrated higher levels of RETN, TLR4, SOCS3, and SOCS5 mRNAs in cancer tissues than benign prostate hyperplasia and indicated positive correlations among RETN, TLR4, and SOCS5. These data suggest that SOCS5, TLR4, and, to a lesser extent, SOCS3 can mediate the mitogenic effect of resistin on PC-3 PCa cells.

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Section: Methodsmentioning

confidence: 99%