目的应用血浆蛋白质组学方法建立诊断模型,探索诊断和识别肾移植临床几乎耐受的新方法。
方法收集2011年11月至2012年11月来自华中科技大学同济医学院附属同济医院等多家医疗机构的43例受试者血浆样本。分为临床几乎耐受组(18例)、排斥反应组(12例)以及健康对照组(13例)。应用表面增强激光解吸离子化飞行时间质谱(SELDI-TOF-MS)技术对血浆样本进行蛋白质组学分析。使用Biomarker Wizard及Biomarker Patterns软件筛选差异质谱峰,建立诊断模型。通过检索SWISS-PROT及TrEMBL数据库,对模型节点质谱峰进行鉴定。
结果获得差异蛋白质谱峰21个( P<0.05)。建立由M2 565.15、M1 966.28、M6 674.78、M1 103.27,M1 716.69、M1 966.28五个质谱峰构成的诊断模型。模型诊断临床几乎耐受的敏感性为83.3%、特异性为92.0%、ROC曲线下面积为0.951。模型节点质谱峰的生物信息学鉴定结果为:B型利钠肽(ANFB)、黑色素浓集激素(MCH)、三叶因子1(TFF1)、强啡肽原(PDYN)、蛋白酶体激活亚3(PSME3)。
结论通过血浆蛋白质组学方法建立诊断模型能够有效识别肾移植临床几乎耐受者。
ObjectiveTo explore a new method of diagnosing and identifying renal transplantation clinical almost tolerance through a diagnostic model using plasma proteomics.
MethodsFrom November 2011 to November 2012, plasma samples from 43 subjects were collected and divided into the groups of clinical almost tolerance(18 cases), rejection(12 cases)and healthy control(13 cases). Protemic analysis of plasma samples was performed by surface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS). Differential mass spectrometry peaks were screened and diagnostic model was established by Biomarker Wizard and Biomarker Pattern software. Identification of mass spectrometric peaks of nodes in the diagnostic model was carried out by searching the databases of SWISS-PROT and TrEMBL using ExPASy's TagIdent tool.
ResultsA total of 21 differential proteins peaks were obtained( P<0.05). Diagnostic model was composed of five mass spectrum peaks of 2 565.15, 1 966.28, 6 674.78, 1 103.27, 1 716.69 and 1 966.28.The sensitivity, specificity and area under the ROC curve of model were 83.3%, 92.0% and 0.951 respectively for diagnosing clinical almost tolerance.Bioinformatic identification results of mass spectrometric peaks of nodes in model were proteins of ANFB, MCH, TFF1, PDYN and PSME3.
ConclusionsEstablishing a diagnostic mode by plasma proteomics may be effectively employed for diagnosing clinical almost tolerance in kidney transplant.
徐洪来,周鸿敏,肖敏,等. 基于血浆蛋白质组学建立肾移植临床几乎耐受者诊断模型[J]. 中华器官移植杂志,2021,42(03):153-157.
DOI:10.3760/cma.j.cn421203-20200404-00107版权归中华医学会所有。
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质谱峰 | 离均差平方和 | 均方差 | F值 | P值 |
---|---|---|---|---|
M1 077.36 | 47.535 | 23.768 | 4.839 | 0.013 |
M1 103.27 | 81.194 | 40.597 | 3.531 | 0.039 |
M1 187.55 | 844.045 | 422.023 | 6.729 | 0.003 |
M1 195.85 | 1 360.902 | 680.451 | 5.927 | 0.006 |
M1 207.48 | 598.817 | 299.409 | 7.409 | 0.002 |
M1 266.43 | 86.857 | 43.429 | 6.007 | 0.005 |
M1 576.00 | 268.173 | 134.086 | 4.407 | 0.019 |
M1 716.69 | 8.441 | 4.220 | 4.220 | 0.022 |
M1 795.36 | 112.346 | 56.173 | 6.042 | 0.005 |
M1 814.32 | 138.897 | 69.449 | 5.460 | 0.008 |
M1 966.28 | 12.838 | 6.419 | 4.479 | 0.018 |
M2 373.07 | 60.927 | 30.464 | 5.544 | 0.007 |
M2 412.18 | 58.729 | 29.364 | 6.608 | 0.003 |
M2 565.15 | 111.224 | 55.612 | 8.974 | 0.001 |
M2 662.71 | 1 532.715 | 766.357 | 3.963 | 0.027 |
M2 863.49 | 51.508 | 25.754 | 3.289 | 0.048 |
M2 986.93 | 41.663 | 20.831 | 5.655 | 0.007 |
M4 016.64 | 31.027 | 15.513 | 5.292 | 0.009 |
M6 674.78 | 64.105 | 32.052 | 3.773 | 0.032 |
M7 031.79 | 47.223 | 23.611 | 4.683 | 0.015 |
M11 354.6 | 6.583 | 3.291 | 3.570 | 0.037 |
组别 | 例数(例) | 敏感性 | 特异性 | 误诊率 | 漏诊率 |
---|---|---|---|---|---|
健康组 | 13 | 83.3 | 92.0 | 8.0 | 16.7 |
耐受组 | 18 | 91.7 | 96.8 | 3.2 | 8.3 |
排斥组 | 7 | 84.6 | 90.0 | 10.0 | 15.4 |

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