血浆外泌体hsa_circ_0052513在非小细胞肺癌中的表达及意义

Hsa_circ_0052513 in Plasma Exosomes as A New Diagnostic Marker for Non-Small Cell Lung Cancer

目的筛选非小细胞肺癌(NSCLC)血浆外泌体中差异表达的circRNA,并验证其作为NSCLC的诊断价值。方法对6例NSCLC患者和6例健康者的血浆外泌体进行circRNA测序分析。qRT-PCR法验证60例NSCLC患者和60例健康对照样本外泌体中hsa_circ_0052513的表达水平。qRT-PCR检测NSCLC患者术前与术后血浆外泌体中hsa_circ_0052513的表达水平。统计分析NSCLC患者血浆外泌体hsa_circ_0052513的表达量与临床病例资料的相关性。结果测序结果显示hsa_circ_0052513在NSCLC患者血浆外泌体中的表达水平高于健康对照。qRT-PCR结果确认了测序结果,而在NSCLC患者手术切除肿瘤后表达降低(P<0.05)。NSCLC患者血浆外泌体hsa_circ_0052513的高表达与NSCLC的肿瘤大小、远端转移和TNM分期相关(均P<0.05)。血浆外泌体hsa_circ_0052513诊断NSCLC患者曲线下面积(AUC)为0.7904(P<0.0001)。结论Hsa_circ_0052513在NSCLC患者血浆外泌体中高表达,且和肿瘤大小、转移以及TNM分期相关,有望成为NSCLC新的诊断标志物。

Objective To screen differentially-expressed circRNA in plasma exosomes of patients with non-small cell lung cancer(NSCLC)and verify its diagnostic value for NSCLC.Methods The plasma exosomes of six patients with NSCLC and six healthy people were analyzed by circRNA sequencing.The expression of hsa_circ_0052513 in plasma exosomes of 60 NSCLC patients and 60 healthy controls was detected by qRT-PCR.The expression level of hsa_circ_0052513 in plasma exosomes of NSCLC patients before and after surgery was detected by qRT-PCR.The correlation between the expression of plasma exosomal hsa_circ_0052513 and clinical data of patients with NSCLC was statistically analyzed.Results Sequencing results showed that the expression of hsa_circ_0052513 in the plasma exosomes of NSCLC patients was higher than that of healthy controls,and the results were confirmed by qRT-PCR.Hsa_circ_0052513 was decreased in patients with NSCLC after tumor resection(P<0.05).The high expression of plasma exosomal hsa_circ_0052513 in patients with NSCLC was correlated with tumor size,distant metastasis,and TNM stage of NSCLC(all P<0.05).The area under the curve of plasma exosomal hsa_circ_0052513 in the diagnosis of patients with NSCLC was 0.7904(P<0.0001).Conclusion Hsa_circ_0052513 is highly expressed in the plasma exosomes of patients with NSCLC and is related to tumor size,metastasis,and TNM stage.Hence,Hsa_circ_0052513 could be a new diagnostic marker for NSCLC.