Journal
GENES & DEVELOPMENT
Volume 28, Issue 11, Pages 1159-1164Publisher
COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
DOI: 10.1101/gad.237479.114
Keywords
immunoglobulin genes; transcription factories; nuclear organization; enhancers; long-range interactions; RNA trafficking
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Funding
- National Institutes of Health [GM29935, A1067906]
- Robert A. Welch Foundation [I-0823]
- National Natural Science Foundation of China [31270928]
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To understand the relationships between nuclear organization and gene expression in a model system, we employed three-dimensional imaging and chromatin immunoprecipitation (ChIP)-chromosome conformation capture (3C) techniques to investigate the topographies of the immunoglobulin (Ig) genes and transcripts during B-cell development. Remarkably, in plasma cells, when antibody synthesis peaks, active Ig genes residing on three different chromosomes exhibit pronounced colo-calizations in transcription factories, often near the nuclear periphery, and display trans-chromosomal enhancer interactions, and their transcripts frequently share inter-chromatin trafficking channels. Conceptually, these features of nuclear organization maximize coordinated transcriptional and transcript trafficking control for potentiating the optimal cytoplasmic assembly of the resulting translation products into protein multimers.
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