Human antigen R-regulated CCL20 contributes to osteolytic breast cancer bone metastasis.

Human antigen R-regulated CCL20 contributes to osteolytic breast cancer bone metastasis.
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人类抗原R调节的CCL20有助于骨化乳腺癌骨转移。

DOI:
10.1038/s41598-017-09040-4
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发表时间:
2017-08-29
期刊:
影响因子:
4.6
通讯作者:
Chung WY
Chung WY
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lee SK;Park KK;Kim HJ;Park J;Son SH;Kim KR;Chung WY

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乳腺癌主要扩散到骨骼,导致患者生存率下降。人类抗原R(HuR)和趋化因子是与mRNA稳定性和细胞-细胞相互作用相关的重要分子。在此,HuR敲低抑制小鼠中转移性乳腺癌细胞的骨转移和骨质溶解,并且HuR表达通过CCL 20和GM-CSF促进癌细胞的转移能力。与GM-CSF的结果相反,ELAVL 1和CCL 20在乳腺肿瘤组织中的表达显著增加,并且ELAVL 1表达与CCL 20表达在乳腺癌亚型中显示出强正相关,特别是基底样亚型。在CCL 20高表达的乳腺癌患者中,无转移生存期和总生存期降低。我们进一步证实了CCL 20在乳腺癌骨转移中的作用。腹膜内施用抗CCL 20抗体抑制小鼠中溶骨性乳腺癌骨转移。用CCL 20处理显著促进基底样三阴性乳腺癌细胞系中的细胞侵袭和MMP-2/9的分泌,而不是鲁米那。此外,CCL 20提高了乳腺癌和成骨细胞中核因子κ B受体激活剂配体/骨保护素的比例,并介导了这些细胞之间的串扰。总的来说,HuR调控的CCL 20可能是乳腺癌骨转移的一个有吸引力的治疗靶点。
Breast cancer mainly spreads to bone, causing decreased survival of patient. Human antigen R (HuR) and chemokines are important molecules associated with mRNA stability and cell-cell interaction in cancer biology. Here, HuR knockdown inhibited bone metastasis and osteolysis of metastatic breast cancer cells in mice and HuR expression promoted the metastatic ability of cancer cells via CCL20 and GM-CSF. In contrast with the findings for GM-CSF, ELAVL1 and CCL20 expressions were markedly increased in breast tumor tissues and ELAVL1 expression showed a strong positive correlation with CCL20 expression in breast cancer subtypes, particularly the basal-like subtype. Metastasis-free survival and overall survival were decreased in the breast cancer patients with high CCL20 expression. We further confirmed the role of CCL20 in breast cancer bone metastasis. Intraperitoneal administration of anti-CCL20 antibodies inhibited osteolytic breast cancer bone metastasis in mice. Treatment with CCL20 noticeably promoted cell invasion and the secretion of MMP-2/9 in the basal-like triple-negative breast cancer cell lines, not the luminal. Moreover, CCL20 elevated the receptor activator of nuclear factors kappa-B ligand/osteoprotegerin ratio in breast cancer and osteoblastic cells and mediated the crosstalk between these cells. Collectively, HuR-regulated CCL20 may be an attractive therapeutic target for breast cancer bone metastasis.
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