Project description:Loss of the neuronal RNA binding protein FMRP causes Fragile X Syndrome (FXS), the most common cause of inherited intellectual disability, yet it is unknown which brain regions and cell types within them contribute to disease pathophysiology. We used conditional tagging of FMRP and CLIP (cTag FMRP CLIP) to examine FMRP targets specifically in CA1 hippocampal neurons, a critical cell type for learning and memory known to have altered synaptic function in FXS. Integrating this data with analysis of ribosome-bound transcripts from the same neuronal population revealed CA1-enriched binding of autism-relevant mRNAs, and unexpected CA1-specific regulation of transcripts encoding circadian proteins.
Project description:We report cell-type and compartment-specific TRAP-seq, RNAseq, FMRP-CLIP, and PAPERCLIP from CA1 hippocampal neurons. We use TRAP-seq and PAPERCLIP data to precisely define the dendritic transcriptome, including mRNAs that harbor APA and AS events that are differentially localized. Further, we use FMRP-CLIP in order to define mRNAs that undergo compartment-specific regulation by FMRP.
Project description:We report cell-type and compartment-specific TRAP-seq, RNAseq, FMRP-CLIP, and PAPERCLIP from CA1 hippocampal neurons. We use TRAP-seq and PAPERCLIP data to precisely define the dendritic transcriptome, including mRNAs that harbor APA and AS events that are differentially localized. Further, we use FMRP-CLIP in order to define mRNAs that undergo compartment-specific regulation by FMRP.
Project description:We report cell-type and compartment-specific TRAP-seq, RNAseq, FMRP-CLIP, and PAPERCLIP from CA1 hippocampal neurons. We use TRAP-seq and PAPERCLIP data to precisely define the dendritic transcriptome, including mRNAs that harbor APA and AS events that are differentially localized. Further, we use FMRP-CLIP in order to define mRNAs that undergo compartment-specific regulation by FMRP.
Project description:TRAP (translating ribosome affinity purification) from CA1 pyramidal neurons and cerebellar granule cells in wildtype and Fmr1 KO littermate pairs. These data show a global downregulation of FMRP targets in Fmr1 KO mice in these cell types.
Project description:The transcriptional repressor Zbtb20 is essential for specification of hippocampal CA1 pyramidal neurons. Moreover, ectopic expression of Zbtb20 is sufficient to transform subicular and retrosplenial areas of D6/Zbtb20S mice to CA1. We used microarrays to identify genes that are repressed by Zbtb20 in developing CA1 pyramidal neurons in the CA1-transformed cortex of D6/Zbtb20S mice. For RNA extraction and hybridization on Affymetrix microarrays, we isolated the CA1-transformed subiculum and retrosplenial cortex from postnatal day 1 D6/Zbtb20S mice, as well as corresponding areas from their wildtype littermates. Total RNA was extracted using the RNeasy Lipid Tissue Mini Kit (Qiagen). Each RNA sample represents a pool of RNA obtained from dissected tissues of seven animals.
Project description:The transcriptional repressor Zbtb20 is essential for specification of hippocampal CA1 pyramidal neurons. Moreover, ectopic expression of Zbtb20 is sufficient to transform subicular and retrosplenial areas of D6/Zbtb20S mice to CA1. We used microarrays to identify genes that are repressed by Zbtb20 in developing CA1 pyramidal neurons in the CA1-transformed cortex of D6/Zbtb20S mice.