SUN Hai-peng,MA Shan,ZHUANG He,et al.Mechanism of Scutellariae Radix-Hedyotidis Herba Against Proliferation of Lung Adenocarcinoma A549 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(19):28-35.
SUN Hai-peng,MA Shan,ZHUANG He,et al.Mechanism of Scutellariae Radix-Hedyotidis Herba Against Proliferation of Lung Adenocarcinoma A549 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(19):28-35. DOI: 10.13422/j.cnki.syfjx.20211922.
Mechanism of Scutellariae Radix-Hedyotidis Herba Against Proliferation of Lung Adenocarcinoma A549 Cells
To observe the effects of Scutellariae Radix-Hedyotidis Herba on the proliferation of human lung adenocarcinoma A549 cells and the expression of interleukin-6(IL-6), phosphatidylinositol 3-kinase (PI3K),protein kinase B (Akt), p-protein kinase B (p-Akt), mechanistic target of rapamycin (mTOR), hypoxia-inducible factor-1
α
(HIF-1
α
), and Cyclin D
1
at the cellular level, and to explore their molecular mechanism.
Method
2
Following the set-up of the blank group (complete medium), low-, moderate-,and high-dose (20, 40, and 60 mg·L
-1
) Scutellariae Radix-Hedyotidis Herba groups, and low-, moderate-, and high-dose (5, 10, and 20 mg·L
-1
) cisplatin groups, the cell were treated with the corresponding drugs for 24, 48, and 72 h for detecting their viability by tetrazolium bromide (MTT) colorimetry. A549 cells were then divided into the blank group, Scutellariae Radix-Hedyotidis Herba group, cisplatin group, and combined medication group and intervened with the
complete medium, 40 mg·L
-1
Scutellariae Radix-Hedyotidis Herba, 10 mg·L
-1
cisplatin, and 40 mg·L
-1
Scutellariae Radix-Hedyotidis Herba + 10 mg·L
-1
cisplatin, respectively, for 24, 48 and 72 h, followed by the measurement of inhibitory effects against the proliferation of A549 cells in each experimental group. The level of IL-6 in cell culture supernatant was determined by enzyme-linked immunosorbent assay (ELISA) after 72 h. The mRNA expression levels of HIF-1
α
and Cyclin D
1
in each group were assayed by real-time polymerase chain reaction (Real-time PCR), and the protein expression levels of PI3K, Akt, p-Akt, mTOR, HIF-1
α
, and Cyclin D
1
by Western blot.
Result
2
After 24 h intervention, Scutellariae Radix-Hedyotidis Herba did not significantly inhibit the proliferation of A549 cells. However, 48 h later, the inhibitory effect in Scutellariae Radix-Hedyotidis Herba groups were significantly enhanced in comparison with that in the blank group (
P
<
0.05), exhibiting a time-dependent response. After 72 h of action, no significant change was present in the inhibitory effect of each Scutellariae Radix-Hedyotidis Herba group, so the optimal concentration of Scutellariae Radix-Hedyotidis Herba was set at 40 mg·L
-1
for follow-up experiments. As demonstrated by the comparison with the blank group, cisplatin at each concentration inhibited the cell proliferation in a time-dependent manner (
P<
0.05). Considering the cell survival rate, the best concentration of cisplatin was set at 10 mg·L
-1
. Compared with the blank group, Scutellariae Radix-Hedyotidis Herba combined with cisplatin remarkably inhibited the proliferation of A549 cells in a time-dependent manner (
P<
0.05), and the differences between the combined medication group and the other two groups became more significant after 72 h of medication (
P<
0.01). The IL-6 level in each experimental group, especially in the combined medication group, significantly declined in contrast to that in the blank group (
P<
0.01). The mRNA expression levels of HIF-1
α
and Cyclin D
1
in all experimental groups were obviously lower than those in the blank group, with the most significant changes observed in the combined medication group (
P
<
0.05,
P
<
0.01). The protein expression levels of PI3K, p-Akt, mTOR, HIF-1
α
, and Cyclin D
1
in each experimental group was significantly down-regulated(
P
<
0.05,
P
<
0.01), and the levels in the combined medication group were even lower than those in the cisplatin group (
P<
0.01).
Conclusion
2
Scutellariae Radix-Hedyotidis Herba has an inhibitory effect on the proliferation of A549 cells, which may be related to its inhibition against the expression and secretion of IL-6/PI3K/Akt/mTOR-HIF-1
α
axis.
关键词
Keywords
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