CAO Shan,GENG Zihan,BAO Lei,et al.Effect of Influenza A Virus on BEAS-2B in Human Lung Epithelial Cells and Intervention Effect of Shufeng Jiedu Capsule-containing Serum[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(23):90-97.
CAO Shan,GENG Zihan,BAO Lei,et al.Effect of Influenza A Virus on BEAS-2B in Human Lung Epithelial Cells and Intervention Effect of Shufeng Jiedu Capsule-containing Serum[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(23):90-97.DOI: 10.13422/j.cnki.syfjx.20241505.
Effect of Influenza A Virus on BEAS-2B in Human Lung Epithelial Cells and Intervention Effect of Shufeng Jiedu Capsule-containing Serum
To observe the effect of Shufeng Jiedu capsule (SFJD)-containing serum on human lung epithelial cells infected by influenza A virus, and investigate the protective effect of the drug on the cells and the potential antiviral effect.
Method
2
The SFJD-containing serum was prepared and used to treat human lung epithelial cells (BEAS-2B) cultured
in vitro
. The viability of cells treated with different concentrations of SFJD-containing serum was measured by the cell counting kit-8 (CCK-8), and the optimal concentration of SFJD-containing serum was screened for subsequent experiments. BEAS-2B cells were classified into normal control, virus infection, and SFJD-containing serum groups, and the CCK-8 method was used to detect the survival rate of BEAS-2B cells after virus infection and drug administration. The expression of influenza virus nucleic acid in the cells of each group was determined, and the apoptosis of cells in different groups was observed by fluorescence microscopy. Real-time PCR was employed to determine the mRNA levels of influenza virus nucleoprotein (NP), Toll-like receptor 4 (TLR4), and myeloid differentiation primary response gene 88 (MyD88) in each group of cells. The immunofluorescen
ce assay was used to detect the fluorescence intensities of TLR4, MyD88, and phosphorylated nuclear factor-
κ
B (p-NF-
κ
B) in lung epithelial cells.
Result
2
Compared with that in the control group (normal serum), the cell survival rates in the blank serum and the SFJD-containing serum (5%, 10%, and 20%) groups were 100.00%±0.00%, 89.05%±4.80%, 87.13%±5.90%, 93.83%±6.03%, and 99.33%±3.39%, respectively (
P
<
0.01). The SFJD-containing serum of 20% was selected as the optimal treatment for subsequent experiments. Compared with the normal control group, the virus infection group showed reduced cell survival rate (
P<
0.01), and the reduction was increased by the SFJD-containing serum (
P
<
0.01). Compared with the virus infection group, SFJD-containing serum reduced the virus load (
P
<
0.01) to decrease apoptosis. Compared with the normal control group, the virus infection group showed up-regulated mRNA levels of NP, TLR4, and MyD88 (
P
<
0.01), and the up-regulation was down-regulated by the SFJD-containing serum (
P
<
0.05,
P
<
0.01). The fluorescence intensities of TLR4, MyD88, and p-NF-
κ
B proteins in the cells increased after virus infection compared with those in the normal control (
P
<
0.05,
P
<
0.01), and they were decreased after administration with the SFJD-containing serum (
P
<
0.05).
Conclusion
2
The SFJD-containing serum can inhibit influenza virus
in vitro
by increasing the survival rate, reducing the apoptosis, and down-regulating the protein levels of TLR4, MyD88, and p-NF-
κ
B in BEAS-2B cells.
关键词
Keywords
references
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