Experiment / E7GD5JLCGAAV-MPRA / in vivo MPRA

AAV-mediated capture-and-clone CRE-seq in mouse cerebral cortex

Massively parallel cis-regulatory analysis in the mammalian central nervous system

The capture-and-clone CRE-seq library was packaged in AAV9(2YF) and injected bilaterally into the primary motor cortex of 4–6-week-old CD-1 mice. Three biological replicates, each from one mouse and harvested 4–5 weeks later, were quantified by barcode RNA/DNA sequencing of microdissected GFP-positive cortical tissue.

Processed tables are specific to each experiment. Column names, units, measurements, and table structure are not standardized across the database. Check this experiment’s column definitions and quality-control notes before comparing or combining data.

Perturbation & assay details

Basal / Untreated

The capture-and-clone library was made from C57BL/6J genomic DNA sheared to approximately 400–500 bp, captured across the central 300 bp of 4,000 mm9 DHS targets, and cloned upstream of a TATA-box minimal promoter-eGFP reporter carrying nominally 15-mer barcodes in the GFP 3-prime UTR. The final plasmid library was packaged in AAV9(2YF), delivered by bilateral stereotactic injection into adult primary motor cortex, and read out from microdissected GFP-positive cortex as normalized RNA/DNA barcode abundance; log2 activity was calculated as log2(0.001 + normalized RNA / normalized DNA).

Processed data

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Filters apply to this table only. The CSV download contains the complete processed table; filtered rows are available through the API.

Column dictionary · 31 definitions
barcode
Unique reporter barcode associated with the tested construct; the library was nominally 15-mer.
barcode_length
Barcode length reported by the MiSeq construct-mapping file; deposited values are 14–16 bp.
target_id
Deposited DHS target identifier assigned to the construct.
target_class
Target tissue class inferred from the deposited target prefix: retina, brain, heart, or liver.
chromosome
mm9 chromosome containing the mapped CRE fragment.
fragment_start
Deposited genomic start coordinate of the captured fragment.
fragment_end
Deposited genomic end coordinate of the captured fragment.
strand
Mapped strand of the captured fragment.
overlap_bases
Number of fragment bases overlapping the assigned 300-bp DHS target.
fragment_length
Captured fragment length reported by the construct-mapping file.
construct_mapping_read_count
Read_top count for the barcode's top mapped fragment species in the MiSeq library assignment.
dna_count_rep1
Raw DNA/plasmid barcode count in cortex biological replicate 1.
dna_count_rep2
Raw DNA/plasmid barcode count in cortex biological replicate 2.
dna_count_rep3
Raw DNA/plasmid barcode count in cortex biological replicate 3.
rna_count_rep1
Raw RNA/cDNA barcode count in cortex biological replicate 1.
rna_count_rep2
Raw RNA/cDNA barcode count in cortex biological replicate 2.
rna_count_rep3
Raw RNA/cDNA barcode count in cortex biological replicate 3.
qc_min_dna_count
Minimum of the three raw DNA counts; all output rows are at least 10.
dna_normalized_rep1
DNA count normalized to total DNA reads in cortex replicate 1.
dna_normalized_rep2
DNA count normalized to total DNA reads in cortex replicate 2.
dna_normalized_rep3
DNA count normalized to total DNA reads in cortex replicate 3.
rna_normalized_rep1
RNA count normalized to total RNA reads in cortex replicate 1.
rna_normalized_rep2
RNA count normalized to total RNA reads in cortex replicate 2.
rna_normalized_rep3
RNA count normalized to total RNA reads in cortex replicate 3.
rna_dna_ratio_rep1
Normalized RNA divided by normalized DNA for cortex replicate 1.
rna_dna_ratio_rep2
Normalized RNA divided by normalized DNA for cortex replicate 2.
rna_dna_ratio_rep3
Normalized RNA divided by normalized DNA for cortex replicate 3.
log2_activity_rep1
Deposited log2(0.001 + normalized RNA/DNA) activity score for cortex replicate 1.
log2_activity_rep2
Deposited log2(0.001 + normalized RNA/DNA) activity score for cortex replicate 2.
log2_activity_rep3
Deposited log2(0.001 + normalized RNA/DNA) activity score for cortex replicate 3.
mean_log2_activity
Mean of the three cortex replicate log2 activity scores.

Quality control

Applied the authors' GEO/paper QC: retained only barcodes with at least 10 raw DNA counts in each of the three cortex DNA replicates. GEO's expression table is already post-filtered; the output retains 38,826 constructs and all rows passed additional barcode, coordinate, and raw-count consistency checks. The authors also reported FastQC, exact index/flanking-sequence checks, and concordant paired-end mapping for barcode–CRE assignment.

Curation notes

This is a barcode/fragment-level table rather than a target-level average so that the library's tiling and truncation information is retained. The C57BL/6J genomic-DNA source used to construct the library differs from the CD-1 mouse cortex recipients; the study does not make a deliberate allele-versus-reference variant contrast. The library was nominally designed with 15-mer barcodes, while GEO's accepted barcode mappings include 14–16 bp lengths. Target classes R/B/H/L are inferred from the deposited GEO target identifiers and represent the retina, brain, heart, and liver DHS input groups, respectively. Coordinates and fragment lengths are retained exactly as deposited by GEO.

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