摘要目的:探讨HIF-1α、CYPJ在舌鳞癌细胞(TSCC)中的作用及意义，并进一步研究热疗对HIF-1α、CYPJ的调控作用。方法:收集TSCC患者癌组织及癌旁正常组织标本80例，采用免疫组化、蛋白印迹、荧光定量PCR检测各标本中HIF-1α、CYPJ的表达及其与临床病理特征之间的关系。采用qPCR、蛋白印迹检测Cal-27细胞在常氧及乏氧状态下以及用42℃热疗、化疗及热化疗处理时HIF-1α、CYPJ的表达情况。细胞划痕检测细胞迁移，流式细胞术检测细胞凋亡。结果:HIF-1α、CYPJ蛋白在TSCC患者肿瘤组织中的表达水平高于相应的癌旁组织；且二者表达升高与TSCC患者肿瘤大小、TNM分期、分化程度、淋巴结转移等相关(均 P<0.05)，与性别、年龄无关(均 P>0.05)。Cal-27细胞中HIF-1α、CYPJ表达水平在乏氧微环境中升高(均 P<0.05)，且单独热疗也促进其表达(均 P<0.05)。相比于单独热疗及化疗，热化疗联合使用在明显抑制二者的表达的同时抑制细胞迁移并促进细胞凋亡(均 P<0.05)。 结论:HIF-1α、CYPJ是TSCC肿瘤发生和预后的一个潜在生物标志物，且热疗后肿瘤复发可能源于热疗触发了HIF-1α表达，其通过激活下游靶基因促使适应热处理的肿瘤细胞生长存活，而热疗联合化疗可能是治疗TSCC一种比较有前景的治疗方案。

abstractsObjective:The investigate the roles and significance of HIF-1α and CYPJ in tongue squamous cell carcinoma cell (TSCC), and further evaluate the regulatory effect of hyperthermia (HT) on HIF-1α and CYPJ in TSCC cells.Methods:Eighty samples of cancer tissues and adjacent normal tissues from TSCC patients were collected. The expression levels of HIF-1α and CYPJ were detected by immunohistochemistry, Western blotting (WB) and fluorescence quantitative PCR, and the relationship between the expression levels of HIF-1α and CYPJ and clinicopathological characteristics was further analyzed. The expression levels of HIF-1α and CYPJ in Cal-27 cells under normoxic and hypoxic conditions for 24 h when combined with HT (42℃), chemotherapy and both were detected by qPCR and WB. Cell migration was detected by cell scratch test and cell apoptosis was measured by flow cytometry.Results:The expression levels of HIF-1α and CYPJ proteins in the tumor tissues of TSCC patients were higher than those in the adjacent normal tissues, which were significantly correlated with tumor size, TNM stage, differentiation degree and lymph node metastasis in TSCC patients (all P<0.05), whereas they were not correlated with gender or age (all P>0.05). The expression levels of HIF-1α and CYPJ in Cal-27 cells were significantly up-regulated in the hypoxic microenvironment (both P<0.05), which were also significantly enhanced by hyperthermia alone (both P<0.05). Compared with hyperthermia or chemotherapy alone, hyperthermia combined with chemotherapy significantly inhibited the expression of HIF-1α and CYPJ, suppressed cell migration and promoted cell apoptosis (all P<0.05). Conclusions:HIF-1α and CYPJ may be potential biomarkers for TSCC tumorigenicity and prognosis. In addition, tumor recurrence after hyperthermia may be due to the role of hyperthermia in triggering HIF-1α expression, which promotes the growth and survival of tumor cells adaptive to hyperthermia treatment by activating the downstream target genes, while hyperthermia combined with chemotherapy may be a promising treatment for TSCC.