MicroRNA-326 sensitizes human glioblastoma cells to curcumin via the SHH/GLI1 signaling pathway.

MicroRNA-326 sensitizes human glioblastoma cells to curcumin via the SHH/GLI1 signaling pathway.
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MicroRNA-326 通过 SHH/GLI1 信号通路使人胶质母细胞瘤细胞对姜黄素敏感。

DOI:
10.1080/15384047.2016.1250981
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发表时间:
2018-04-03
影响因子:
3.6
通讯作者:
Jiang C
Jiang C
中科院分区:
医学3区
文献类型:
--
作者:
Yin S;Du W;Wang F;Han B;Cui Y;Yang D;Chen H;Liu D;Liu X;Zhai X;Jiang C

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多形性胶质母细胞瘤是成人中最恶性和最常见的脑肿瘤,其特征是生存率低,对化疗和放疗具有高抵抗力。在新的化疗药物中,姜黄素是一种流行的膳食补充剂,已被证明对多种癌细胞类型具有有效的抗癌作用;然而,使用传统的单一药物治疗,姜黄素仍然难以达到令人满意的治疗效果。在这项研究中,我们发现miR-326,一种肿瘤抑制microRNA在各种肿瘤类型中的表达,导致姜黄素诱导的细胞毒性和凋亡的显着增加,以及胶质瘤细胞增殖和迁移的减少。此外,我们发现,与单独治疗相比,miR-326和姜黄素联合治疗可显著抑制胶质瘤细胞中的SHH/GLI 1通路,与p53状态无关。此外,在体内,姜黄素诱导的miR-326表达的增加改变了这种联合治疗的抗胶质瘤机制,与单独治疗相比,这进一步减少了肿瘤体积并延长了生存期。总之,我们的数据强烈支持miR-326在增强胶质瘤细胞对姜黄素的化学敏感性方面的重要作用。
Glioblastoma multiforme is the most malignant and common brain tumor in adults and is characterized by poor survival and high resistance to chemotherapy and radiotherapy. Among the new chemotherapy drugs, curcumin, a popular dietary supplement, has proven to have a potent anticancer effect on a variety of cancer cell types; however, it remains difficult to achieve a satisfactory therapeutic effect with curcumin using the traditional single-drug treatment. In this study, we found that expression of miR-326, a tumor suppressor microRNA in various tumor types, resulted in a marked increase of curcumin-induced cytotoxicity and apoptosis and a decrease of proliferation and migration in glioma cells. Moreover, we found that combination treatment of miR-326 and curcumin caused significant inhibition of the SHH/GLI1 pathway in glioma cells compared with either treatment alone, independent of p53 status. Furthermore, in vivo, the curcumin-induced increase in miR-326 expression altered the anti-glioma mechanism of this combination treatment, which further reduced tumor volume and prolonged the survival period compared to either treatment alone. Taken together, our data strongly support an important role for miR-326 in enhancing the chemosensitivity of glioma cells to curcumin.
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