Cyclodipeptide c(Orn-Pro) Conjugate with 4-Ethylpiperic Acid Abrogates Cancer Cell Metastasis through Modulating MDM2
作者:Sudha Shankar、Mir Mohd Faheem、Debasis Nayak、Naiem Ahmad Wani、Saleem Farooq、Surrinder Koul、Anindya Goswami、Rajkishor Rai
DOI:10.1021/acs.bioconjchem.7b00670
日期:2018.1.17
The present work describes the synthesis, characterization, and anticancer properties of c(Lys-Pro), P1; c(Orn-Pro), P2; and conjugates PA-c(Lys-Pro), C1; PA-c(Orn-Pro), C2; EPA-c(Lys-Pro), C3; and EPA-c(Orn-Pro), C4. Among all, conjugate C4 displays potent anticancer activity with IC50 1.3 μM in MDA-MB-231, 3.5 μM in PC-3, 8.9 μM in MCF-7, and 9.6 μM in Miapaca-2 cancer cells. In addition, C4 downregulates the expression of MDM2 and abrogates the cancer cell invasion/metastasis. Through knock-down of MDM2, we demonstrate that this abrogation of metastasis by C4 is primarily MDM2 dependent. Furthermore, the animal studies underscore the antitumor as well as antimetastatic potential of C4 in vivo in breast cancer model at a safe and tolerable dose of 20 mg/kg.
本研究介绍了 c(Lys-Pro),P1;c(Orn-Pro),P2;以及共轭物 PA-c(Lys-Pro),C1;PA-c(Orn-Pro),C2;EPA-c(Lys-Pro),C3;和 EPA-c(Orn-Pro),C4 的合成、表征和抗癌特性。其中,共轭物 C4 具有很强的抗癌活性,对 MDA-MB-231 癌细胞的 IC50 为 1.3 μM,对 PC-3 癌细胞的 IC50 为 3.5 μM,对 MCF-7 癌细胞的 IC50 为 8.9 μM,对 Miapaca-2 癌细胞的 IC50 为 9.6 μM。此外,C4 还能下调 MDM2 的表达,抑制癌细胞的侵袭/转移。通过敲除 MDM2,我们证明了 C4 对转移的抑制主要依赖于 MDM2。此外,动物实验强调了 C4 在乳腺癌模型中的抗肿瘤和抗转移潜力,其剂量为 20 毫克/千克,安全且可耐受。