ADAR1 and ADAR2 Expression and Editing Activity during Forebrain Development

Developmental Neuroscience - Tập 31 Số 3 - Trang 223-237 - 2009
Michelle M. Jacobs1, Rachel L. Fogg, Ronald B. Emeson, Gregg D. Stanwood
1Vanderbilt University, Nashville, Tenn., USA

Tóm tắt

The conversion of adenosine to inosine within RNA transcripts is regulated by a family of double-stranded RNA-specific adenosine deaminases referred to as adenosine deaminases that act on RNA (ADARs). Little is known regarding the developmental expression of ADAR family members or the mechanisms responsible for the specific patterns of editing observed for ADAR substrates. We have examined the spatiotemporal expression patterns for ADAR1 and ADAR2 in mouse forebrain. ADAR1 and ADAR2 are broadly distributed in most regions of the mouse forebrain by P0, including the cerebral cortex, hippocampus, and diencephalon. High expression levels were maintained into adulthood. Colocalization studies demonstrated ADAR1 and ADAR2 expression in neurons but not astrocytes. Editing for specific ADAR mRNA targets precedes high expression of ADAR proteins, suggesting that region-specific differences in editing patterns may not be mediated solely by ADAR expression levels.

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Developmental Neuroscience

Tập 31 Số 3

223-237

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