Organ-specific testosterone-insensitive response of miRNA expression of C57BL/6 mice to Plasmodium chabaudi malaria

被引:14
|
作者
Al-Quraishy, Saleh [1 ]
Dkhil, Mohamed A. [1 ,2 ]
Delic, Denis [3 ]
Abdel-Baki, Abdel Azeem [1 ,4 ]
Wunderlich, Frank [3 ]
机构
[1] King Saud Univ, Coll Sci, Dept Zool, Riyadh 11451, Saudi Arabia
[2] Helwan Univ, Fac Sci, Dept Zool & Entomol, Cairo, Egypt
[3] Univ Dusseldorf, Dept Mol Parasitol, D-40225 Dusseldorf, Germany
[4] Beni Suef Univ, Fac Sci, Dept Zool, Cairo, Egypt
关键词
LEISHMANIA-DONOVANI INFECTION; MICRORNA EXPRESSION; CELLS; LIVER; RESISTANCE; IMMUNITY; STAGE; HOST; SUSCEPTIBILITY; INFLAMMATION;
D O I
10.1007/s00436-012-2937-3
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Increasing evidence critically implicates miRNAs in the pathogenesis of diseases, but little is known in context with infectious diseases. This study investigates as to whether the testosterone-induced persistent susceptibility to blood-stage malaria of Plasmodium chabaudi coincides with changes in miRNA expression of the anti-malaria effectors sites spleen and liver. Female C57BL/6 mice were treated with vehicle or testosterone (T) for 3 weeks. Then, T treatment was discontinued for 12 weeks before challenge with 10(6) P. chabaudi-parasitized erythrocytes. The miRNA expression was examined after 12 weeks of T withdrawal and during infections at peak parasitemia on day 8 p.i. using miRXplore (TM) microarray technology. P. chabaudi infections induce an organ-specific response of miRNA expression. We can identify 25 miRNA species to be downregulated by more than 2-fold in the spleen and 169 miRNA species in the liver. Among these 194 miRNA species, there are 12 common miRNA species that are downregulated by 0.48-0.14-fold in both spleen and liver, which are miR-194, miR-192, miR-193A-3P, miR-145, miR-16, miR-99A, miR-99B, miR-15A, miR-152, let-7G, let-7B, and miR-455-3P. Only in the liver, there is an upregulation of the miR-142-5p by 2.5-fold and miR-342-3p by 5.1-fold. After 12 weeks of T withdrawal, the spleen exhibits only the miR-200A that is upregulated by 2.7-fold. In the liver, miR-376B, miR-493*, and miR-188-3P are upregulated by 2.4-fold, 2.2-fold, and 2.1-fold, respectively, and miR-347, miR-200A, and miR-200B are downregulated by approximately 0.4-fold. Upon infection, however, these changes are not sustained, i.e., the miRNA expressions of both spleen and liver of T-pretreated mice exhibit the same response to P. chabaudi malaria as that of vehicle-treated control mice. Our data suggest (1) that the P. chabaudi-induced downregulation of miRNA expression in spleen and liver is required to allow the upregulation of their numerous target genes in response to infection, and (2) that the T-induced persistent susceptibility to P. chabaudi does not affect the responsiveness of miRNA expression in spleen and liver to blood-stage malaria.
引用
收藏
页码:1093 / 1101
页数:9
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