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血清外泌体来源的microRNA-221-3p在肝细胞癌中的表达及意义 吴俊艺

ence for the diagnosis and prognostic evaluation of HCC.
: , ; ; ; Key words carcinoma hepatocellular exosomes microRNAs prognosis
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square test was used for comparison of categorical data between two groups. The Kaplan - Meier method and the log - rank test were used to
, analyze the association of the expression of serum exosomal miRNA - 221 - 3p with prognosis and the Cox proportional hazards regression
摘要:目的 方法 探讨肝细胞癌( HCC) 患者血清外泌体来源 microRNA( miRNA) - 221 - 3p 的表达水平及分析其临床意义。
选取 2010 年 2 月 - 2014 年 12 月南京大学医学院附属南京鼓楼医院经手术治疗后诊断为 HCC 的 66 例患者作为 HCC 组,选取 25
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临床肝胆病杂志第 卷第期 年月 , , 36 8 2020 8 J Clin Hepatol Vol.36 No.8 Aug.2020
血清外泌体来源的 microRNA - 221 - 3p 在肝细胞癌中的表达及意义
吴俊艺1,2,赖智德1,田毅峰1,王耀东1
1 福建省立医院肝胆胰外科,福州350001;2 南京大学医学院附属南京鼓楼医院肝胆胰外科,南京210008
例同期在本院接受健康检查的体检者作为对照组。 通过外泌体提取试剂盒分离 HCC 组和对照组血清中的外泌体,采用蛋白免疫印
迹检测外泌体标记蛋白分子,透射电镜鉴定血清外泌体形态;实时荧光定量 PCR 方法检测两组血清外泌体来源的 miRNA - 221 - 3p
表达水平。 计量资料两组间比较采用 Mann - Whitney U 检验,计数资料两组间比较采用 χ2 检验。 采用 Kaplan - Meier 方法及 log -
失去手术时机[2]。因此,深入研究HCC 的发病机制、寻 及anti - CD63 一抗在4 ℃ 冰箱中孵育过夜,PBS 缓冲液
找新的HCC 早期诊断标志物具有重要意义。目前临床 冲洗后二抗孵育1 h,采用化学发光法显色并拍照(Tanon
上AFP 的检测是HCC 筛查的主要手段,但是其对HCC 5200 成像系统)。
结果 rank 检验分析血清外泌体来源的 miRNA - 221 - 3p 表达与预后关系,采用 Cox 比例风险回归模型分析预后影响因素。
血清
来源的外泌体是直径为 40 ~ 100 nm 囊泡体,表达 HSP70、Alix 及 CD63。 HCC 组血清来源外泌体中 miRNA - 221 - 3p 较对照组表达 水平升高,差异具有统计学意义( U = 354. 00,P < 0. 001) 。 HCC 患者血清外泌体 miRNA - 221 - 3p 高表达与肿瘤大小( χ2 = 6. 016, P = 0 014) 、包膜侵犯( χ2 = 7 580,P = 0. 006) 和 TNM 分期( χ2 = 6. 340,P = 0. 012) 有关。 此外,血清外泌体来源的 miRNA - 221 - 3p 表达水平较高的 HCC 患者总体生存率较低,差异具有统计学意义( χ2 = 17. 105,P < 0. 001) 。 多因素分析结果表明血清外泌体来
吴俊艺,等. 血清外泌体来源的microRNA -221 -3p 在肝细胞癌中的表达及意义
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肝细胞癌(HCC)是最常见的恶性肿瘤之一,HCC 的 (JEM - )在 2100 100 kV 电压下进行观察并拍照。
发展具有多种癌症特征,如持续性细胞增殖、逃避凋亡、 1. 3. 3 白免疫印迹 通过含有蛋白酶抑制剂的裂解
达水平明显升高,对 HCC 诊断及预后判断具有参考价值。
关键词:癌, 肝细胞; 外泌体; 微 RNAs; 预后 中图分类号:R735. 7 文献标志码:A 文章编号: ( ) 1001 - 5256 2020 08 - 1768 - 05
Expression and clinical significance of serum exosomal microRNA - 221 - 3p in hepatocellular carcinoma
: ( ) Abstract Objective To investigate the expression and clinical significance of serum exosomal microRNA miRNA - 221 - 3p in hepato
( ) , cellular carcinoma HCC . Methods A total of 66 patients who underwent surgery in Nanjing Drum Tower Hospital Nanjing University , , Medical School from February 2010 to December 2014 and were diagnosed with HCC were enrolled as HCC group and 25 individuals who
underwent physical examination in our hospital during the same period of time were enrolled as control group. The exosome extraction kit was
; ; used to isolate the exosomes in serum Western blotting was used to measure the expression of exosome markers a transmission electron mi ; croscope was used to observe the morphology of serum exosomes quantitative real - time PCR was used to measure the expression of serum , exosomal miRNA - 221 - 3p. The Mann - Whitney U test was used for comparison of continuous data between two groups and the chi -
model was used to analyze the influencing factors for prognosis. Results Serum exosomes were small membranous vesicles with a diameter of
, , , about 40 - 100 nm and HSP70 Alix and CD63 were expressed in the exosomes. The HCC group had significantly higher expression of ser ( , ) , um exosomal miRNA - 221 - 3p than the control group U = 354. 00 P < 0. 001 . In the patients with HCC the high expression of serum ( , ), ( , ), exosomal miRNA - 221 - 3p was associated with tumor size χ2 = 6. 016 P = 0. 014 capsular invasion χ2 = 7. 580 P = 0. 006 and ( , ) , TNM stage χ2 = 6. 340 P = 0 012 . In addition the HCC patients with high expression of serum exosomal miRNA - 221 - 3p had a sig ( , ) nificantly lower overall survival rate than those with low expression χ2 = 17. 105 P < 0. 001 . The multivariate analysis showed that the ex ( [ ] , [ ]: , ) pression of serum exosomal miRNA - 221 - 3p hazard ratio HR = 2. 434 95% confidence interval CI 1. 178 - 5. 027 P = 0. 016 ( , : , ) and tumor stage HR = 2. 653 95% CI 1. 222 - 5. 760 P = 0. 014 were independent risk factors for the prognosis of patients with HCC. , Conclusion There is a significant increase in the expression of serum exosomal miRNA - 221 - 3p in HCC patients which provides a refer
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