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2017 ; 19
(2
): 425-440
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gab.com Text
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English Wikipedia
Biotagging of Specific Cell Populations in Zebrafish Reveals Gene Regulatory
Logic Encoded in the Nuclear Transcriptome
#MMPMID28402863
Trinh LA
; Chong-Morrison V
; Gavriouchkina D
; Hochgreb-Hägele T
; Senanayake U
; Fraser SE
; Sauka-Spengler T
Cell Rep
2017[Apr]; 19
(2
): 425-440
PMID28402863
show ga
Interrogation of gene regulatory circuits in complex organisms requires precise
tools for the selection of individual cell types and robust methods for
biochemical profiling of target proteins. We have developed a versatile,
tissue-specific binary in vivo biotinylation system in zebrafish termed
biotagging that uses genetically encoded components to biotinylate target
proteins, enabling in-depth genome-wide analyses of their molecular interactions.
Using tissue-specific drivers and cell-compartment-specific effector lines, we
demonstrate the specificity of the biotagging toolkit at the biochemical,
cellular, and transcriptional levels. We use biotagging to characterize the
in vivo transcriptional landscape of migratory neural crest and myocardial cells
in different cellular compartments (ribosomes and nucleus). These analyses reveal
a comprehensive network of coding and non-coding RNAs and cis-regulatory modules,
demonstrating that tissue-specific identity is embedded in the nuclear
transcriptomes. By eliminating background inherent to complex embryonic
environments, biotagging allows analyses of molecular interactions at high
resolution.