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The Anti‐Metastatic Action of Oxyresveratrol via Suppression of Phosphoryl‐ERK/‐PKCα‐Mediated Sp1/MMP1 Signaling in Human Renal Carcinoma Cells
Environmental Toxicology ( IF 4.4 ) Pub Date : 2024-08-22 , DOI: 10.1002/tox.24400
Tsai‐Kun Wu, Yi‐Hsien Hsieh, Tung‐Wei Hung, Yi‐Chen Lin, Chia‐Liang Lin, Yu‐Jou Liu, Ying‐Ru Pan, Jen‐Pi Tsai

Oxyresveratrol (OxyR) exerts biological and pharmacological effects in a variety of tumor cells, including antioxidant action, antitumor activity, and proapoptotic effects. However, the regulation of targeted signaling pathways by OxyR and the mechanism underlying these effects in human renal cell carcinoma (RCC) have been less studied. We observed that OxyR at noncytotoxic doses did not affect the growth of human RCC cells or normal kidney HK2 cells. OxyR inhibited ACHN and Caki‐1 cell migration and invasion through targeting matrix metalloproteinase 1 (MMP1) expression. Analysis of clinical databases showed that high MMP1 expression is associated with lower overall survival (OS) in these cancers (p < 0.01). OxyR significantly inhibited the mRNA and protein expression of Sp1. Furthermore, luciferase assay results showed that OxyR inhibited Sp1 transcriptional activity. Additionally, OxyR preferentially suppressed the activation of ERK and PKCα. Treatment with U0126 (MEK inhibitor) or G06976 (PKCα inhibitor) clearly decreased Sp1 and MMP1 expression and inhibited RCC cell migration and invasion. In conclusion, OxyR may be a potential antitumor therapy for the inhibition of migration and invasion by controlling p‐ERK/Sp1 and p‐PKCα/Sp1‐mediated MMP1 expression in RCC.

中文翻译:


氧白藜芦醇通过抑制磷酸基 ERK/-PKCα 介导的 Sp1/MMP1 信号传导在人肾癌细胞中的抗转移作用



Oxyresferatrol (OxyR) 在多种肿瘤细胞中发挥生物学和药理作用,包括抗氧化作用、抗肿瘤活性和促凋亡作用。然而,OxyR 对靶向信号通路的调节以及这些作用在人肾细胞癌 (RCC) 中的潜在机制研究较少。我们观察到非细胞毒性剂量的 OxyR 不会影响人 RCC 细胞或正常肾脏 HK2 细胞的生长。OxyR 通过靶向基质金属蛋白酶 1 (MMP1) 表达抑制 ACHN 和 Caki-1 细胞迁移和侵袭。临床数据库分析显示,在这些癌症中,高 MMP1 表达与较低的总生存期 (OS) 相关 (p < 0.01)。OxyR 显著抑制 Sp1 的 mRNA 和蛋白表达。此外,荧光素酶测定结果显示 OxyR 抑制 Sp1 转录活性。此外,OxyR 优先抑制 ERK 和 PKCα 的激活。用 U0126 (MEK 抑制剂) 或 G06976 (PKCα 抑制剂) 处理可显著降低 Sp1 和 MMP1 表达,并抑制 RCC 细胞迁移和侵袭。总之,OxyR 可能是一种潜在的抗肿瘤疗法,通过控制 p-ERK/Sp1 和 p-PKCα/Sp1 介导的 MMP1 在 RCC 中的表达来抑制迁移和侵袭。
更新日期:2024-08-22
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