Br J Cancer:去泛素化酶USP9X:口腔癌的潜在治疗靶标

2021-06-04 xiaozeng MedSci原创

口腔鳞状细胞癌(OSCC)或口腔癌是头颈癌的一个主要亚型

口腔鳞状细胞癌(OSCC)或口腔癌是头颈癌的一个主要亚型,是东南亚男性死亡的主要原因,其主要是由于咀嚼烟草、槟榔以及饮酒所致。

虽然在很大程度上可通过改变生活习惯和方式来预防,但在大多数情况下,口腔癌的临床表现与患者的预后不良以及高死亡率相关。尽管抗癌疗法已取得较大的进展,但在过去几十年中,OSCC患者的5年生存率仍然较低,其主要原因为治疗耐药性的产生和疾病的复发。

由于缺乏可靠的临床病理学和分子预测因素,OSCC的恶性转化是不可预测的。因此,急需寻找可预测疾病发生发展的潜在生物标志物和治疗靶标。

口腔细胞系和组织中MCL-1与USP9X表达相关

研究人员发现,在OSCC中抗凋亡MCL-1蛋白的过表达与疾病的发生发展、治疗耐药性产生以及患者的不良预后相关。因此,该研究旨在探究去泛素化酶USP9X在稳定MCL-1蛋白中的作用及其对口腔癌发生发展的贡献。

MCL-1和USP9X高表达与患者的不良预后相关

研究人员发现,相比于正常粘膜,USP9X和MCL-1在口腔癌前病变和口腔癌中的表达水平均显著升高。USP9X能够与MCL-1相互作用并使其去泛素化,以提高后者的稳定性。药理学抑制USP9X可有效的诱导OSCC细胞的死亡。进一步的研究显示,USP9X和MCL-1的表达水平升高对应着OSCC患者的不良预后。


总而言之,该研究结果揭示。USP9X可通过提高MCL-1的稳定性,在口腔癌发生的早期到晚期阶段起致癌作用,其或可成为口腔癌的潜在预后生物标志物和治疗靶标。


原始出处:

Sulkshane, P., Pawar, S.N., Waghole, R. et al. Elevated USP9X drives early-to-late-stage oral tumorigenesis via stabilisation of anti-apoptotic MCL-1 protein and impacts outcome in oral cancers. Br J Cancer (02 June 2021).

 

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    2021-06-06 SR~young海东

    靶向治疗

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    2021-06-06 zhaojie88
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