Guan Jikui, Umapathy Ganesh, Yamazaki Yasuo, Wolfstetter Georg, Mendoza Patricia, Pfeifer Kathrin, Mohammed Ateequrrahman, Hugosson Fredrik, Zhang Hongbing, Hsu Amy W, Halenbeck Robert, Hallberg Bengt, Palmer Ruth H
Department of Medical Biochemistry and Cell Biology, Instititute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Five Prime Therapeutics Inc., South San Francisco, United States.
Elife. 2015 Sep 29;4:e09811. doi: 10.7554/eLife.09811.
Aberrant activation of anaplastic lymphoma kinase (ALK) has been described in a range of human cancers, including non-small cell lung cancer and neuroblastoma (Hallberg and Palmer, 2013). Vertebrate ALK has been considered to be an orphan receptor and the identity of the ALK ligand(s) is a critical issue. Here we show that FAM150A and FAM150B are potent ligands for human ALK that bind to the extracellular domain of ALK and in addition to activation of wild-type ALK are able to drive 'superactivation' of activated ALK mutants from neuroblastoma. In conclusion, our data show that ALK is robustly activated by the FAM150A/B ligands and provide an opportunity to develop ALK-targeted therapies in situations where ALK is overexpressed/activated or mutated in the context of the full length receptor.
间变性淋巴瘤激酶(ALK)的异常激活已在一系列人类癌症中被描述,包括非小细胞肺癌和神经母细胞瘤(哈尔伯格和帕尔默,2013年)。脊椎动物ALK一直被认为是一种孤儿受体,ALK配体的身份是一个关键问题。在这里,我们表明FAM150A和FAM150B是人类ALK的有效配体,它们与ALK的细胞外结构域结合,除了激活野生型ALK外,还能够驱动神经母细胞瘤中激活的ALK突变体的“超激活”。总之,我们的数据表明,ALK被FAM150A/B配体强烈激活,并为在全长受体背景下ALK过表达/激活或突变的情况下开发ALK靶向疗法提供了机会。