Novel bone morphogenetic protein receptor inhibitor JL5 suppresses tumor cell survival signaling and induces regression of human lung cancer
作者:Jenna H. Newman、David J. Augeri、Rachel NeMoyer、Jyoti Malhotra、Elaine Langenfeld、Charles B. Chesson、Natalie S. Dobias、Michael J. Lee、Saeed Tarabichi、Sachin R. Jhawar、Praveen K. Bommareddy、Sh’Rae Marshall、Evita T. Sadimin、John E. Kerrigan、Michael Goedken、Christine Minerowicz、Salma K. Jabbour、Shengguo Li、Mary O. Carayannopolous、Andrew Zloza、John Langenfeld
DOI:10.1038/s41388-018-0156-9
日期:2018.7
BMP receptor inhibitors induce death of cancer cells through the downregulation of antiapoptotic proteins XIAP, pTAK1, and Id1-Id3. However, the current most potent BMP receptor inhibitor, DMH2, does not downregulate BMP signaling in vivo because of metabolic instability and poor pharmacokinetics. Here we identified the site of metabolic instability of DMH2 and designed a novel BMP receptor inhibitor, JL5. We show that JL5 has a greater volume of distribution and suppresses the expression of Id1 and pTak1 in tumor xenografts. Moreover, we demonstrate JL5-induced tumor cell death and tumor regression in xenograft mouse models without immune cells and humanized with adoptively transferred human immune cells. In humanized mice, JL5 additionally induces the infiltration of immune cells within the tumor microenvironment. Our studies show that the BMP signaling pathway is targetable in vivo and BMP receptor inhibitors can be developed as a therapeutic to treat cancer patients.
BMP受体抑制剂通过下调抗凋亡蛋白XIAP、pTAK1和Id1-Id3来诱导癌细胞死亡。然而,目前最有效的BMP受体抑制剂DMH2由于代谢不稳定和药代动力学不佳,不能在体内下调BMP信号。在这里,我们确定了DMH2代谢不稳定的部位,并设计了一种新型的BMP受体抑制剂JL5。我们表明JL5具有更大的分布体积,并抑制肿瘤异种移植中Id1和pTak1的表达。此外,我们证明了JL5诱导的肿瘤细胞死亡和肿瘤消退在异种移植小鼠模型中,没有免疫细胞,并用人源化移植的人免疫细胞。在人源化小鼠中,JL5还诱导免疫细胞在肿瘤微环境中的浸润。我们的研究表明,BMP信号通路在体内是可靶向的,BMP受体抑制剂可以开发为治疗癌症患者的治疗方法。