microRNA expression in the prefrontal cortex of individuals with schizophrenia and schizoaffective disorder.

microRNA expression in the prefrontal cortex of individuals with schizophrenia and schizoaffective disorder.
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DOI:
10.1186/gb-2007-8-2-r27
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发表时间:
2007
期刊:
影响因子:
12.3
通讯作者:
Hammond SM
Hammond SM
中科院分区:
生物学1区
文献类型:
--
作者:
Perkins DO;Jeffries CD;Jarskog LF;Thomson JM;Woods K;Newman MA;Parker JS;Jin J;Hammond SM

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转录分析揭示了精神分裂症与 miRNA 表达改变之间可能存在关联 microRNA (miRNA) 是一种小的非编码 RNA 分子,现在被认为可以调节许多 mRNA 的表达。它们与多种复杂疾病的病因有关,包括抽动秽语综合征、脆性X综合征和多种癌症。我们假设精神分裂症可能与 miRNA 谱的改变有关。为了研究这种可能性,我们使用定制的 miRNA 微阵列比较了精神分裂症 (n = 13) 或分裂情感障碍 (n = 2) 个体死后前额皮质组织中 264 种人类 miRNA 的表达,以及 21 名未患精神疾病的个体的组织。允许 5% 的错误发现率,我们发现 16 个 miRNA 在患者受试者的前额皮质中存在差异表达,其中 15 个 miRNA 的表达水平低于未受精神病影响的对照受试者(倍数变化 0.63 至 0.89),1 个表达水平较高(倍数变化 1.77)。我们实验室还通过定量 RT-PCR 测定了 12 种选定 miRNA 的表达水平。与对照样本相比,精神分裂症样本中的 8 种 miRNA 的微阵列表达水平较低,其中 7 种 miRNA 通过定量 RT-PCR 的表达水平也较低。这项研究首次发现精神分裂症患者死后前额皮质中 miRNA 谱发生改变。
Transcriptional profiling reveals a possible association between schizophrenia and altered miRNA expression microRNAs (miRNAs) are small, noncoding RNA molecules that are now thought to regulate the expression of many mRNAs. They have been implicated in the etiology of a variety of complex diseases, including Tourette's syndrome, Fragile × syndrome, and several types of cancer. We hypothesized that schizophrenia might be associated with altered miRNA profiles. To investigate this possibility we compared the expression of 264 human miRNAs from postmortem prefrontal cortex tissue of individuals with schizophrenia (n = 13) or schizoaffective disorder (n = 2) to tissue of 21 psychiatrically unaffected individuals using a custom miRNA microarray. Allowing a 5% false discovery rate, we found that 16 miRNAs were differentially expressed in prefrontal cortex of patient subjects, with 15 expressed at lower levels (fold change 0.63 to 0.89) and 1 at a higher level (fold change 1.77) than in the psychiatrically unaffected comparison subjects. The expression levels of 12 selected miRNAs were also determined by quantitative RT-PCR in our lab. For the eight miRNAs distinguished by being expressed at lower microarray levels in schizophrenia samples versus comparison samples, seven were also expressed at lower levels with quantitative RT-PCR. This study is the first to find altered miRNA profiles in postmortem prefrontal cortex from schizophrenia patients.
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