ZHANG Cheng-cheng, JI Qing, YANG Yue, et al. Effect of Feiyanning Formula on Invasion and Metastasis of Lung Cancer Inhibiting TGF- Mediated Bone Metastasis Related PTHrP/RANKL Signaling Pathway[J]. Chinese journal of experimental traditional medical formulae, 2018, 24(3): 132-136.
ZHANG Cheng-cheng, JI Qing, YANG Yue, et al. Effect of Feiyanning Formula on Invasion and Metastasis of Lung Cancer Inhibiting TGF- Mediated Bone Metastasis Related PTHrP/RANKL Signaling Pathway[J]. Chinese journal of experimental traditional medical formulae, 2018, 24(3): 132-136. DOI: 10.13422/j.cnki.syfjx.2018030132.
目的:探讨肺岩宁方通过调控转化生长因子-β(transforming growth factor-β,TGF-β)介导的骨转移相关甲状旁腺激素相关蛋白(parathyroid hormone-related protein,PTHrP)/NF-κB受体活化因子配体(receptor or activator of NF-κB ligand,RANKL)信号通路抗肺癌细胞侵袭转移的作用机制。方法:体外培养A549肺癌细胞,用不同终浓度肺岩宁方进行处理,未加肺岩宁方为空白组。分别采用cell counting kit-8(CCK-8)检测肺岩宁方对A549细胞增殖抑制作用,计算半数浓度抑制率(IC50);采用转移小室(transwell)侵袭实验、划痕实验检测肺岩宁方对A549细胞体外侵袭及迁移的抑制作用;以及蛋白免疫印迹法(Western blot)检测TGF-β,PTHrP,RANKL蛋白表达。结果:肺岩宁方作用于A549肺癌细胞48 h后,与空白组相比,肺岩宁方(12.5,25,50 mg·L-1)组穿膜细胞明显减少(P<0.05,P<0.01);肺岩宁方(12.5,25,50 mg·L-1)组的划痕距离较空白组明显降低(P<0.05,P<0.01);且肺岩宁方(25,50 mg·L-1)组作用于A549细胞后,TGF-β蛋白表达明显下调(P<0.05),其对应下游靶基因PTHrP及RANKL蛋白也发生明显表达下调(P<0.05)。结论:肺岩宁方可抑制A549肺癌细胞的侵袭迁移能力,直接下调TGF-β基因及其下游靶基因PTHrP,RANKL蛋白表达,且具有浓度相关性。本研究证实了肺岩宁方通过调控TGF-β介导的骨转移相关PTHrP/RANKL信号通路,以达到抗肺癌侵袭转移的作用机制,这为肺癌临床靶向治疗提供了一定的实验依据,也显示了肺岩宁方作为抗肺癌侵袭转移药物广泛的应用前景。
Abstract
Objective:To investigate the effect mechanism of Feiyanning formula on invasion and metastasis of lung cancer cells via inhibiting transforming growth factor-β (TGF-β) mediated bone metastasis related parathyroid hormone-related protein (PTHrP)/receptor or activator of NF-κB ligand (RANKL) signaling pathway. Method:A549 cells were cultured in vitro and treated with Feiyanning formula with various concentrations
with no Feiyanning formula as blank group. The anti-proliferation effects and the 50% inhibitory concentration (IC50) of Feiyanning formula was measured by cell counting kit-8 (CCK-8) method. The inhibiting effect against invasion and migration ability of A549 cells was detected by transwell assay and scratch test. Western blot was used to detect the protein expression of TGF-β
parathyroid hormone-related protein (PTHrP) and receptor or activator of NF-κB ligand (RANKL). Result:After Feiyanning formula effected on A549 lung cancer cells for 48 h
as compared with blank control group
the transmembrane cells in the low
medium and high dose Feiyanning formula (12.5
25
50 mg·L-1) groups were obviously reduced (P<0.05
P<0.01)
and the scratch distance in Feiyanning formula groups was also significantly shortened (P<0.05
P<0.01). Furthermore
medium and high dose Feiyanning formula group significantly down-regulated the expression of TGF-β (P<0.05) and its corresponding downstream target genes of PTHrP and RANKL (P<0.05). Conclusion:Feiyanning formula can directly down-regulate the protein expression of TGF-β and its downstream target genes PTHrP and RANKL
and inhibit the invasion and migration ability of A549 lung cancer cells in a concentration-dependent manner. This study confirmed the mechanism of Feiyanning formula on inhibiting the invasion and migration of lung cancer by regulating TGF-β mediated bone metastasis related PTHrP/RANKL signaling pathway
providing a certain experimental basis for the clinical target therapy of lung cancer
suggesting that Feiyanning formula could be a potential candidate in the treatment of lung cancer cell bone metastasis.