Sonic hedgehog signaling enhanced the expression of histone demethylase, lysine-specific demethylase 8 in the head and neck squamous cell carcinoma cell line SCC-6.
- Author:
Xiao-nan YIN
1
;
Yu-shi MA
;
Juan DU
;
Zhi-peng FAN
Author Information
- Publication Type:Journal Article
- MeSH: Carcinoma, Squamous Cell; genetics; metabolism; Cell Line, Tumor; Gene Expression Regulation, Neoplastic; Head and Neck Neoplasms; genetics; metabolism; Hedgehog Proteins; metabolism; Histone Demethylases; genetics; metabolism; Humans; Mutant Proteins; metabolism; RNA, Messenger; genetics; Receptors, G-Protein-Coupled; metabolism; Recombinant Proteins; metabolism; Signal Transduction; Smoothened Receptor; Veratrum Alkaloids; pharmacology
- From: Chinese Journal of Stomatology 2013;48(2):77-80
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo determine whether the sonic hedgehog (Shh) signaling could regulate the expression of histone demethylases in the head and neck squamous cell carcinoma(SCC).
METHODSHuman recombinant SHH-N protein or over-expression of the mutant 2 smoothened (M2-SMO) was applied to activate the Shh signaling in tongue squamous cell carcinoma cell line-SCC-6 in this study. Cyclopamine was used to block the Shh signaling in SCC-6. The real-time reverse transcription (RT)-PCR was used to detect the expression of histone demethylases at the mRNA level.
RESULTSThe data showed that activation of the Shh signaling up-regulated the expression of histone demethylase, lysine-specific demethylase 8 (KDM-8) at the mRNA level by human recombinant SHH-N protein (1.841 ∼ 3.591 fold compare with untreated group; P < 0.01), over-expression of the M2-SMO also increased the expression of KDM-8 (1.358 ∼ 3.013 fold compared with empty vector group; P < 0.05), and after the Shh signaling was blocked by Cyclopamine, the expression of KDM-8 was down regulated (decreased 25.6% ∼ 66.6% compared with control cells, P < 0.05).
CONCLUSIONSHistone demethylase KDM-8 was downstream target gene of Shh signaling in head and neck squamous cell carcinoma cell line SCC-6, and its expression was positively regulated by the Shh signaling.
