School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
Cancer Biol Ther. 2022 Dec 31;23(1):34-50. doi: 10.1080/15384047.2021.2017223. Epub 2022 Jan 3.
C-Myc overexpression is a common finding in pancreatic cancer and predicts the aggressive behavior of cancer cells. It binds to the promoter of different genes, thereby regulating their transcription. C-Myc is downstream of KRAS and interacts with several oncogenic and proliferative pathways in pancreatic cancer. C-Myc enhances aerobic glycolysis in cancer cells and regulates glutamate biosynthesis from glutamine. It provides enough energy for cancer cells' metabolism and sufficient substrate for the synthesis of organic molecules. C-Myc overexpression is associated with chemoresistance, intra-tumor angiogenesis, epithelial-mesenchymal transition (EMT), and metastasis in pancreatic cancer. Despite its title, c-Myc is not "undruggable" and recent studies unveiled that it can be targeted, directly or indirectly. Small molecules that accelerate c-Myc ubiquitination and degradation have been effective in preclinical studies. Small molecules that hinder c-Myc-MAX heterodimerization or c-Myc/MAX/DNA complex formation can functionally inhibit c-Myc. In addition, c-Myc can be targeted through transcriptional, post-transcriptional, and translational modifications.
C-Myc 过表达在胰腺癌中很常见,并且预测癌细胞的侵袭性行为。它与不同基因的启动子结合,从而调节它们的转录。C-Myc 是 KRAS 的下游靶点,与胰腺癌中的几个致癌和增殖途径相互作用。C-Myc 增强癌细胞的有氧糖酵解,并调节从谷氨酰胺合成谷氨酸。它为癌细胞的代谢提供足够的能量,并为有机分子的合成提供足够的底物。C-Myc 过表达与胰腺癌中的化疗耐药性、肿瘤内血管生成、上皮-间充质转化(EMT)和转移有关。尽管它的名字是 c-Myc,但它并不是“不可成药”的,最近的研究表明它可以被直接或间接地靶向。加速 c-Myc 泛素化和降解的小分子在临床前研究中已被证明是有效的。阻碍 c-Myc-MAX 异二聚体或 c-Myc/MAX/DNA 复合物形成的小分子可以在功能上抑制 c-Myc。此外,c-Myc 可以通过转录、转录后和翻译修饰来靶向。