胃癌(GC),其特点是患病率和死亡率高,仍然是全球第三大致命癌症。本文旨在探讨IV型胶原α1(COL4A1)对GC的影响,以及它的潜在机制。采用RT-qPCR和Westernblot检测GC细胞中COL4A1的mRNA和蛋白表达。在耗尽COL4A1后,再次进行RT-qPCR和Western印迹以检查转染功效。随着CCK-8的应用,伤口愈合和transwell,细胞增殖的能力,移民和入侵被评估,分别。此外,蛋白质印迹测试了与迁移有关的因子的蛋白质水平,扩散,上皮间质转化(EMT)和Hedgehog信号。因此,COL4A1在GC组织和细胞中表达升高,它的敲除抑制了细胞的活力,迁移,GC中的入侵和EMT。根据基因集富集分析(GSEA),COL4A1参与Hedgehog信号通路的调控,然后通过检测Hedgehog相关蛋白进一步验证。为了弄清楚COL4A1与Hedgehog信号通路之间的关系,我们用了Purmorphamine,刺猬的激动剂,为了治疗GC细胞,发现COL4A1阻断Hedgehog信号传导以抑制GC细胞的侵袭性表型。总之,COL4A1沉默被证明对GC的恶性过程具有抑制作用,表明COL4A1可能是GC治疗的有效标志。
Gastric cancer (GC), which features high prevalence and mortality rate, remains the third most lethal cancer worldwide. The paper was designed to explore the impacts of collagen type IV alpha 1 (
COL4A1) on GC, along with its potential mechanism. The mRNA and protein expressions of
COL4A1 in GC cells were assessed using RT-qPCR and Western blot. After depleting
COL4A1, RT-qPCR and Western blot were conducted again to check the transfection efficacy. With the application of CCK-8, wound healing and transwell, the capabilities of cells to proliferate, migrate and invade were appraised, respectively. Moreover, Western blot tested the protein levels of factors involved in migration, proliferation, epithelial-mesenchymal transition (EMT) and Hedgehog signaling. As a result, COL4A1 displayed elevated expression in GC tissues and cells, while its knockdown inhibited the cell viability, migration, invasion and EMT in GC. According to Gene Set Enrichment Analysis (GSEA), COL4A1 was involved in the regulation of Hedgehog signaling pathway, which was then further verified by the detection of Hedgehog-related proteins. To figure out the relationship between
COL4A1 and Hedgehog signaling pathway, we used purmorphamine, an agonist of Hedgehog, to treat GC cells, finding that COL4A1 blocked Hedgehog signaling to inhibit the aggressive phenotypes of GC cells. In short, COL4A1 silence was testified to exhibit suppressive effects on the malignant process of GC, suggesting that
COL4A1 might be a potent hallmark of GC therapy.