A search for Trypanosoma brucei rhodesiense diagnostic antigens by proteomic screening and targeted cloning.

A search for Trypanosoma brucei rhodesiense diagnostic antigens by proteomic screening and targeted cloning.
复制标题

DOI:
10.1371/journal.pone.0009630
复制
发表时间:
2010-03-10
期刊:
影响因子:
3.7
通讯作者:
Matovu E
Matovu E
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Manful T;Mulindwa J;Frank FM;Clayton CE;Matovu E

文献摘要

参考文献

被引文献

相似文献

东非锥虫病唯一可用的诊断方法是血液样本的光学显微镜检查。简单的免疫诊断将极大地帮助锥虫病的控制。为了找到人类昏睡病患者血清特异性识别的锥虫蛋白,我们通过蛋白质印迹筛选了布氏锥虫蛋白质组。使用胞质、细胞骨架和糖体部分,我们发现绝大多数丰富的锥虫蛋白不能被患者血清特异性识别。我们确定磷酸甘油酸激酶 (PGKC)、热休克蛋白 (HSP70) 以及组蛋白 H2B 和 H3 作为可能的候选诊断抗原。这些蛋白质,加上鞭毛旁杆蛋白 1、罗氏蛋白(一种半胱氨酸蛋白酶)和布氏锥虫核苷转运蛋白 TbNT10 的胞外片段,在大肠杆菌中表达,并测试与患者和对照血清的反应性。仅 TbHSP70 优先被患者血清识别,但单独使用 TbHSP70 作为诊断的敏感性和特异性不足。使用天然蛋白质提取物进行的免疫沉淀显示没有特异性反应的蛋白质。没有丰富的布氏锥虫可溶性糖体或细胞骨架蛋白可能对诊断有用。因此,为了找到有用的诊断抗原,有必要使用更复杂的蛋白质组学方法,或测试大量候选蛋白质。
The only available diagnostic method for East African trypanosomiasis is light microscopy of blood samples. A simple immunodiagnostic would greatly aid trypanosomiasis control. To find trypanosome proteins that are specifically recognised by sera from human sleeping sickness patients, we have screened the Trypanosoma brucei brucei proteome by Western blotting. Using cytosolic, cytoskeletal and glycosomal fractions, we found that the vast majority of abundant trypanosome proteins is not specifically recognised by patient sera. We identified phosphoglycerate kinase (PGKC), heat shock protein (HSP70), and histones H2B and H3 as possible candidate diagnostic antigens. These proteins, plus paraflagellar rod protein 1, rhodesain (a cysteine protease), and an extracellular fragment of the Trypanosoma brucei nucleoside transporter TbNT10, were expressed in E. coli and tested for reactivity with patient and control sera. Only TbHSP70 was preferentially recognized by patient sera, but the sensitivity and specificity were insufficient for use of TbHSP70 alone as a diagnostic. Immunoprecipitation using a native protein extract revealed no specifically reacting proteins. No abundant T. brucei soluble, glycosomal or cytoskeletal protein is likely to be useful in diagnosis. To find useful diagnostic antigens it will therefore be necessary to use more sophisticated proteomic methods, or to test a very large panel of candidate proteins.
DOI: 10.1017/s0031182000067767
发表时间: 1993-11-01
期刊: PARASITOLOGY
影响因子: 2.4
作者:
MULLER, N;IMBODEN, M;SEEBECK, T
通讯作者: SEEBECK, T
DOI: 10.1046/j.1365-3156.2001.00710.x
发表时间: 2001-05-01
影响因子: 3.3
作者:
Blum, J;Nkunku, S;Burri, C
通讯作者: Burri, C
DOI: 10.1016/s0166-6851(01)00368-1
发表时间: 2001-11-01
影响因子: 1.5
作者:
Caffrey, CR;Hansell, E;McKerrow, JH
通讯作者: McKerrow, JH
DOI: 10.1515/bchm3.1985.366.2.901
发表时间: 1985-01-01
期刊: BIOLOGICAL CHEMISTRY HOPPE-SEYLER
影响因子: --
作者:
BROCKMOLLER, J;KAMP, RM
通讯作者: KAMP, RM
DOI: 10.1371/journal.pone.0000040
发表时间: 2006-12-20
期刊: PLOS ONE
影响因子: 3.7
作者:
Forgber, Michael;Basu, Rajatava;Walden, Peter
通讯作者: Walden, Peter