CLIN CANCER RES:阻断神经内分泌分化和巨噬细胞反馈回路可以改善恩杂鲁胺对前列腺癌治疗效果

2018-02-26 MedSci MedSci原创

去势治疗(ADT)会导致前列腺癌产生耐药。ADT耐药与神经内分泌分化和肿瘤相关巨噬细胞有关。CLIN CANCER RES近期发表了一篇文章,研究恩杂鲁胺诱导的神经内分泌分化和肿瘤相关巨噬细胞及其机制。

去势治疗(ADT)会导致前列腺癌产生耐药。ADT耐药与神经内分泌分化和肿瘤相关巨噬细胞有关。CLIN CANCER RES近期发表了一篇文章,研究恩杂鲁胺诱导的神经内分泌分化和肿瘤相关巨噬细胞及其机制。

作者通过前列腺癌组织、恩杂鲁胺耐药鼠模型研究恩杂鲁胺诱导的神经内分泌分化和肿瘤相关巨噬细胞之间的关系。在体外通过细胞因子抗体芯片,ELISA,免疫共沉淀等研究机制。建立了原位前列腺癌鼠模型在体内研究IL6受体和HMGB1联合阻滞对恩杂鲁胺耐药的影响。研究结果发现,在ADT治疗过的前列腺癌或去势抵抗前列腺癌组织中CD163表达水平升高,NSE和CHGA水平也升高,在恩杂鲁胺耐药模型中也发现了这一现象。表明神经内分泌分化和肿瘤相关巨噬细胞在恩杂鲁胺耐药中起到了重要作用。恩杂鲁胺诱导的HMGB1表达有利于肿瘤相关巨噬细胞募集和极化。HGMB1活化的肿瘤相关巨噬细胞分泌IL6增强恩杂鲁胺诱导的神经内分泌分化,通过STAT3直接促进HMGB1转录。在原位前列腺癌鼠模型中,阻滞IL6/STAT3通路联合HMGB1敲低可以抑制恩杂鲁胺诱导的耐药。

文章最后认为,恩杂鲁胺升高HMGB1水平,募集和活化肿瘤相关巨噬细胞。HMGB1活化的肿瘤相关巨噬细胞分泌IL6促进恩杂鲁胺诱导的前列腺癌神经内分泌分化,形成前列腺癌神经内分泌分化和肿瘤相关巨噬细胞之间的正反馈回路。联合阻断IL6受体和HMGB1可能会成为恩杂鲁胺耐药的晚期或转移性前列腺癌患者新的治疗选择。

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    2018-09-22 gwc392
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    2018-02-26 明月清辉

    谢谢分享.学习了

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