ISSN 2410-7751 (Print)
ISSN 2410-776X (Online) 
Biotechnologia Acta Т. 15, No. 6 , 2022
P. 55-60, Bibliography 19, Engl.
UDC: 616-006.577.112
https://doi.org/10.15407/biotech15.06.055
Full text: (PDF, in Rnglish)
THE EXPRESSION OF TLR4, IFN-γ, TGF-β AND TNF-αLL LINE OF HUMAN SMALL CELL LUNG CARCINOMA NCI-H69 AND IN CISPLATIN-RESISTANT SUBLINE NCI-H69/CPR
I. Stupak1, O. Gorbach2 , O. Sckachkova2 , N. Senchylo1, E. Singayivskiy1, M. Starshinova1, L. Garmanchuk1
1Educational and Scientific Centre “Institute of biology and medicine”, Taras Shevchenko National University of Kyiv, Ukraine
2National Cancer Institute, Kyiv, Ukraine
Aim: to investigate the effect of teichoic acid Staphylococcus aureus for expression of pro-inflammatory cytokines and of TLR4 in a human small cell lung carcinoma cell line NCI-H69, and cisplatin resistant subline NCI-H69/CPR.
Methods. Incubation of cells with teichoic acid (1 ng/m) conducted for 2 days. Expression level of TLR4, TGF-β, INF-γ, TNF-α was evaluated by the real time PCR on 7500 Real-Time PCR System, using specific primers and fluorochrome SYBR Green. The reverse transcription reaction was performed with High-Capacity cDNA Reverse Transcription Kit carried out under the conditions: 25 °C - 10 min, 37 °C ‒ 120 min and 85 °C ‒ 5 min.
Results. In cell line culture NCI-H69 addition of teichoic acid increased expression of TLR4 by 1.3 times, and IFN-γ – by 1,1 times. Expression of TGF-β and TNF-α was decreased 2.5 and 4.9 times respectively. In cell line culture NCI-H69/CPR the addition of teichoic acid inhibited the expression of all studied parameters. Expression TLR4 decreased by 4.2 times, IFN-γ – by 1.4 times. Expression TGF-β and TNF-α was depressed 1.6 and 1.2 times. The presented data indicate that teichoic acid of bacterial origin provided the effect of modulating the inflammatory effect in lung cancer cell culture, sensitive and resistant to cisplatin.
Conclusions. Teichoic acid as a ligand of TLR4 modulates the expression of pro-inflammatory and anti-inflammatory cytokines in small cell lung cancer cell culture and suppresses the expression of TLR4 and all investigated cytokines in the cisplatin-resistant cell line NCI-H69.
Key words: teichoic acids, toll-like receptor, pathogen-associated molecular patterns, inflammation, cisplatin, chemotherapy, anti-inflammatory cytokines
© Palladin Institute of Biochemistry of National Academy of Sciences of Ukraine, 2020
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