Dai Xiaoyun, Zhang Jingwen, Arfuso Frank, Chinnathambi Arunachalam, Zayed M E, Alharbi Sulaiman Ali, Kumar Alan Prem, Ahn Kwang Seok, Sethi Gautam
Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore.
School of Biomedical Sciences, CHIRI Biosciences Research Precinct, Curtin University, Western Australia 6009, Australia.
Exp Biol Med (Maywood). 2015 Jun;240(6):760-73. doi: 10.1177/1535370215579167. Epub 2015 Apr 7.
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has been shown to selectively induce apoptotic cell death in various tumor cells by engaging its death-inducing receptors (TRAIL-R1 and TRAIL-R2). This property has led to the development of a number of TRAIL-receptor agonists such as the soluble recombinant TRAIL and agonistic antibodies, which have shown promising anticancer activity in preclinical studies. However, besides activating caspase-dependent apoptosis in several cancer cells, TRAIL may also activate nonapoptotic signal transduction pathways such as nuclear factor-kappa B, mitogen-activated protein kinases, AKT, and signal transducers and activators of transcription 3, which may contribute to TRAIL resistance that is being now frequently encountered in various cancers. TRAIL resistance can be overcome by the application of efficient TRAIL-sensitizing pharmacological agents. Natural compounds have shown a great potential in sensitizing cells to TRAIL treatment through suppression of distinct survival pathways. In this review, we have summarized both apoptotic and nonapoptotic pathways activated by TRAIL, as well as recent advances in developing TRAIL-receptor agonists for cancer therapy. We also briefly discuss combination therapies that have shown great potential in overcoming TRAIL resistance in various tumors.
肿瘤坏死因子相关凋亡诱导配体(TRAIL)已被证明可通过与死亡诱导受体(TRAIL-R1和TRAIL-R2)结合,在多种肿瘤细胞中选择性地诱导凋亡性细胞死亡。这一特性促使了多种TRAIL受体激动剂的研发,如可溶性重组TRAIL和激动性抗体,它们在临床前研究中已显示出有前景的抗癌活性。然而,除了在几种癌细胞中激活半胱天冬酶依赖性凋亡外,TRAIL还可能激活非凋亡信号转导途径,如核因子-κB、丝裂原活化蛋白激酶、AKT以及信号转导和转录激活因子3,这些可能导致目前在各种癌症中经常遇到的TRAIL耐药性。通过应用有效的TRAIL增敏药理学药物可以克服TRAIL耐药性。天然化合物已显示出通过抑制不同的生存途径使细胞对TRAIL治疗敏感的巨大潜力。在这篇综述中,我们总结了TRAIL激活的凋亡和非凋亡途径,以及开发用于癌症治疗的TRAIL受体激动剂的最新进展。我们还简要讨论了在克服各种肿瘤中的TRAIL耐药性方面显示出巨大潜力的联合疗法。
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