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Transposable elements drive species-specific and tissue-specific transcriptomes in human development.

Yun Zhang1, Jianqi She1,2,3, Xueyan Hu2

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Summary
This summary is machine-generated.

Transposable elements (TEs) drive gene expression in human development. This study reveals thousands of TE-initiated transcripts, many tissue-specific and primate-specific, shaping gene regulation.

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Area of Science:

  • Genomics
  • Developmental Biology
  • Evolutionary Biology

Background:

  • Transposable elements (TEs) are abundant genomic resources.
  • TEs act as alternative promoters, initiating transcripts crucial for development and tissue function.
  • The role of TE-initiated transcription in human development is not well understood.

Purpose of the Study:

  • To characterize the prevalence and function of TE-initiated transcription across human tissues and embryonic stem cells.
  • To investigate the tissue-specific activation and evolutionary origins of TE-initiated transcripts.
  • To understand the contribution of TEs to primate-specific gene regulatory networks.

Main Methods:

  • Genome-wide identification of TE-initiated transcripts.
  • Analysis of tissue-specific transcription factor binding motifs.
  • Comparative analysis of TE-derived transcription start sites (TSSs) across primates.

Main Results:

  • Identified 14,164 TE-initiated transcripts in 40 human body sites and stem cells.
  • Found 80% of these transcripts exhibit tissue-specific activation.
  • Discovered 312 primate-specific TE-derived TSSs creating novel gene expression patterns.

Conclusions:

  • Established a global profile of TE-initiated transcription in humans.
  • Enhanced understanding of TE roles in primate-specific gene regulatory networks during development.
  • Highlighted the significance of TEs in shaping human evolutionary adaptations.