Abstract:
BACKGROUND:The protein kynureninase (KYNU) has recently been reported to participate in the pathological processes of various diseases. AIM:To explore the expression and the biological function of KYNU in cutaneous squamous cell carcinoma (cSCC). METHODS:Expression of KYNU in cSCC cell lines and tissues was firstly evaluated based on the Gene Expression Omnibus and the Oncomine databases. Quantitative reverse transcription-PCR was performed to determine the mRNA expression of KYNU in cSCC cell lines. Small interfering RNA (siRNA) was used for silencing KYNU. The effect of KYNU on the growth and motility of cSCC cells was determined by cell counting kit-8, wound-healing and Transwell assays, and western blotting was used to determine the protein expression of KYNU, AKT, phosphoinositide 3-kinase (PI3K), phosphorylated (p)-AKT and p-PI3K. RESULTS:KYNU was significantly upregulated in cSCC tissues and cell lines. Knockdown of KYNU using siRNA noticeably suppressed the proliferation, migration and invasion ability of SCL-1 cells (P < 0.01). Western blotting revealed that phosphorylation of AKT and PI3K was markedly inhibited after silencing KYNU. The ratios of p-AKT/AKT and p-PI3K/PI3K were significantly decreased in the si-KYNU group compared with the control group. CONCLUSION:Depletion of KYNU could inhibit the growth of cSCC cells, possibly through modulating PI3K/AKT pathway. These data indicate that KYNU takes a key part in the malignant progression of cSCC, and could be considered as a promising therapeutic target for cSCC treatment.
journal_name
Clin Exp Dermatoljournal_title
Clinical and experimental dermatologyauthors
Ci C,Wu C,Lyu D,Chang X,He C,Liu W,Chen L,Ding Wdoi
10.1111/ced.14072subject
Has Abstractpub_date
2020-03-01 00:00:00pages
194-201issue
2eissn
0307-6938issn
1365-2230journal_volume
45pub_type
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