Higher order arrangement of the eukaryotic nuclear bodies

I. Fan Wang, Narsa M. Reddy, C. K.James Shen

Research output: Contribution to journalArticle

157 Citations (Scopus)

Abstract

The nuclei of eukaryotic cells consist of discrete substructures. These substructures include the nuclear bodies, which have been implicated in a number of biological processes such as transcription and splicing. However, for most nuclear bodies, the details of involvement in these processes in relation to their three-dimensional distributions in the nucleus are still unclear. Through the analysis of TDP, a protein functional in both transcriptional repression and alternative splicing, we have identified a new category of nuclear bodies within which the TDP molecules reside. Remarkably, the TDP bodies (TBs) colocalize or overlap with several different types of nuclear bodies previously suggested to function in transcription or splicing. Of these nuclear bodies, the Gemini of coiled bodies (GEM) seems to associate with TB through the interaction between survival motor neuron (SMN) protein and TDP. Furthermore, TB sometimes appears to be the bridge of two or more of these other nuclear bodies. Our data suggest the existence of a hierarchy and possibly functional arrangement of the nuclear bodies within the eukaryotic nuclei.

Original languageEnglish
Pages (from-to)13583-13588
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume99
Issue number21
DOIs
Publication statusPublished - Oct 15 2002
Externally publishedYes

Keywords

  • Nuclear structure
  • Splicing
  • Transcription

ASJC Scopus subject areas

  • General

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