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Wnt5a induces ROR1 to recruit cortactin to promote breast-cancer migration and metastasis.
npj Breast Cancer ( IF 6.5 ) Pub Date : 2019-10-25 , DOI: 10.1038/s41523-019-0131-9 Md Kamrul Hasan 1 , George F Widhopf 1 , Suping Zhang 1, 2 , Sharon M Lam 1 , Zhouxin Shen 3 , Steven P Briggs 3 , Barbara A Parker 1 , Thomas J Kipps 1, 2
npj Breast Cancer ( IF 6.5 ) Pub Date : 2019-10-25 , DOI: 10.1038/s41523-019-0131-9 Md Kamrul Hasan 1 , George F Widhopf 1 , Suping Zhang 1, 2 , Sharon M Lam 1 , Zhouxin Shen 3 , Steven P Briggs 3 , Barbara A Parker 1 , Thomas J Kipps 1, 2
Affiliation
ROR1 is a conserved oncoembryonic surface protein expressed in breast cancer. Here we report that ROR1 associates with cortactin in primary breast-cancer cells or in MCF7 transfected to express ROR1. Wnt5a also induced ROR1-dependent tyrosine phosphorylation of cortactin (Y421), which recruited ARHGEF1 to activate RhoA and promote breast-cancer-cell migration; such effects could be inhibited by cirmtuzumab, a humanized mAb specific for ROR1. Furthermore, treatment of mice bearing breast-cancer xenograft with cirmtuzumab inhibited cortactin phosphorylation in vivo and impaired metastatic development. We established that the proline at 841 of ROR1 was required for it to recruit cortactin and ARHGEF1, activate RhoA, and enhance breast-cancer-cell migration in vitro or development of metastases in vivo. Collectively, these studies demonstrate that the interaction of ROR1 with cortactin plays an important role in breast-cancer-cell migration and metastasis.
中文翻译:
Wnt5a 诱导 ROR1 招募 cortactin 促进乳腺癌迁移和转移。
ROR1 是乳腺癌中表达的保守癌胚表面蛋白。在此,我们报道 ROR1 与原发性乳腺癌细胞或转染表达 ROR1 的 MCF7 细胞中的皮质素相关。Wnt5a 还诱导 Cortactin (Y421) 的 ROR1 依赖性酪氨酸磷酸化,从而招募 ARHGEF1 来激活 RhoA 并促进乳腺癌细胞迁移;这种效应可以被 cirmtuzumab 抑制,cirmtuzumab 是一种针对 ROR1 的人源化单克隆抗体。此外,用cirmtuzumab治疗携带乳腺癌异种移植物的小鼠可抑制体内cortactin磷酸化并损害转移发展。我们确定,ROR1 841 位的脯氨酸是其招募皮质素和 ARHGEF1、激活 RhoA 以及增强乳腺癌细胞体外迁移或体内转移发展所必需的。总的来说,这些研究表明 ROR1 与 Cortactin 的相互作用在乳腺癌细胞迁移和转移中发挥着重要作用。
更新日期:2019-10-25
中文翻译:
Wnt5a 诱导 ROR1 招募 cortactin 促进乳腺癌迁移和转移。
ROR1 是乳腺癌中表达的保守癌胚表面蛋白。在此,我们报道 ROR1 与原发性乳腺癌细胞或转染表达 ROR1 的 MCF7 细胞中的皮质素相关。Wnt5a 还诱导 Cortactin (Y421) 的 ROR1 依赖性酪氨酸磷酸化,从而招募 ARHGEF1 来激活 RhoA 并促进乳腺癌细胞迁移;这种效应可以被 cirmtuzumab 抑制,cirmtuzumab 是一种针对 ROR1 的人源化单克隆抗体。此外,用cirmtuzumab治疗携带乳腺癌异种移植物的小鼠可抑制体内cortactin磷酸化并损害转移发展。我们确定,ROR1 841 位的脯氨酸是其招募皮质素和 ARHGEF1、激活 RhoA 以及增强乳腺癌细胞体外迁移或体内转移发展所必需的。总的来说,这些研究表明 ROR1 与 Cortactin 的相互作用在乳腺癌细胞迁移和转移中发挥着重要作用。