C Ci1, C Wu1, D Lyu2, X Chang1, C He1, W Liu1, L Chen2, W Ding2. 1. Department of, Dermatology, First Affiliated Hospital of Wannan Medical College, Wuhu, China. 2. Department of, Burn and Plastic Surgery, First Affiliated Hospital of Wannan Medical College, Wuhu, China.
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.
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.
Authors: Soudeh Ghafouri-Fard; Ali Noie Alamdari; Yashar Noee Alamdari; Atefe Abak; Bashdar Mahmud Hussen; Mohammad Taheri; Elena Jamali Journal: Cancer Cell Int Date: 2022-08-13 Impact factor: 6.429