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Increased expression of the spliced DDR1c isoform in brain tissues from schizophrenia patients

机译:精神分裂症患者脑组织中剪接的DDR1c亚型的表达增加

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摘要

An allelic association between the Discoidin domain receptor 1 (DDR1) variant rslO49623 and schizophrenia suggests that DDR1 is a schizophrenia susceptibility gene. This genetic association is confirmed in the DDR1 haplotype composed of the DDR1 variants rslO49623, rs2267641 and rs2239518 (Roig et al, 2007). DDR1 is present in the human myelin fibers of the central nervous system (CNS), specifically in oligodendrocyte cells, where the expression of myelin genes such as myelin-associated glycoprotein (MAG) and oligodendrocyte transcription factor 2 (OLIG2) positively correlates with that of DDR1 (Roig et al., 2010). Alternative splicing of the human DDR1 gene generates five isoforms (DDRla-e) (Alves et al., 2001) and previous studies suggest that the function of DDR1 may be isoform dependent (Matsuyama et al., 2004; Ram et al., 2006). However, studies examining the expression levels of the various DDR1 isoforms in human brain tissue remain scarce. Recently, we identified an A2 response element (A2RE), which is involved in RNA transport, in the sequence of the DDR1 gene. Furthermore, we found that the polymorphism that gives rise to DDR1 variant rs2267641 is located in the A2RE and that the expression of the DDRlb and DDRlc isoforms is differentially modulated in human brain tissues that have this variant (Roig et al., 2012).
机译:Discoidin域受体1(DDR1)变体rs1049623与精神分裂症之间的等位基因关联表明DDR1是精神分裂症易感基因。在由DDR1变体rs1049623,rs2267641和rs2239518组成的DDR1单倍型中证实了这种遗传关联(Roig等,2007)。 DDR1存在于中枢神经系统(CNS)的人髓磷脂纤维中,特别是在少突胶质细胞中,其中髓磷脂基因(如髓磷脂相关糖蛋白(MAG)和少突胶质细胞转录因子2(OLIG2))的表达与DDR1(Roig et al。,2010)。人类DDR1基因的可变剪接产生5个亚型(DDRla-e)(Alves等,2001),先前的研究表明DDR1的功能可能是依赖亚型的(Matsuyama等,2004; Ram等,2006) )。但是,研究人脑组织中各种DDR1亚型表达水平的研究仍然很少。最近,我们在DDR1基因的序列中鉴定了一个A2响应元件(A2RE),它参与了RNA的运输。此外,我们发现引起DDR1变异体rs2267641的多态性位于A2RE中,并且在具有该变异体的人脑组织中,DDR1b1和DDR1c1亚型的表达受到差异调节(Roig等人,2012)。

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