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A comprehensive transcript map of the mouse Gnas imprinted complex.

Rebecca Holmes1, Christine Williamson, Jo Peters

  • 1The Mammalian Genetics Unit, Medical Research Council, Harwell OX11 ORD, Oxfordshire, UK.

Genome Research
|June 24, 2003
PubMed
Summary
This summary is machine-generated.

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The FANTOM mouse transcriptome reveals extensive transcript diversity at the Gnas locus, identifying 12 new transcripts and uncovering complex alternative splicing patterns. This provides new insights into transcriptional regulation at imprinted loci.

Area of Science:

  • Genomics
  • Transcriptomics
  • Gene Regulation

Background:

  • The FANTOM mouse transcriptome offers a comprehensive resource for studying transcript diversity.
  • Imprinting loci, such as the Gnas complex, are crucial for understanding transcriptional regulation.

Purpose of the Study:

  • To investigate the transcript diversity of the Gnas complex locus using FANTOM2 data.
  • To identify and characterize novel transcripts and alternative splicing events within the Gnas locus.

Main Methods:

  • Mapping of 13 full-length cDNAs from the FANTOM2 set to the Gnas locus.
  • Analysis of differential allelic expression (maternal vs. paternal).
  • Identification of novel antisense transcription and alternative splicing variants.

Related Experiment Videos

Main Results:

  • Identification of 12 putative novel transcripts at the Gnas locus, in addition to one known transcript.
  • Eight of the identified transcripts showed differential allelic expression.
  • Evidence for antisense transcription spanning 30 kb and discovery of alternate splicing patterns, including novel 3'UTRs.

Conclusions:

  • The FANTOM2 data has significantly expanded the known repertoire of transcripts at the Gnas complex locus.
  • Complex alternative splicing and antisense transcription contribute to the diversity of transcripts originating from this imprinted locus.
  • Further research is needed to elucidate the functional significance of these newly identified transcripts.