SAGE detects microRNA precursors

Xijin Ge, Qingfa Wu, San Ming Wang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Background: MicroRNAs (miRNAs) have been shown to play important roles in regulating gene expression. Since miRNAs are often evolutionarily conserved and their precursors can be folded into stem-loop hairpins, many miRNAs have been predicted. Yet experimental confirmation is difficult since miRNA expression is often specific to particular tissues and developmental stages. Results: Analysis of 29 human and 230 mouse longSAGE libraries revealed the expression of 22 known and 10 predicted mammalian miRNAs. Most were detected in embryonic tissues. Four SAGE tags detected in human embryonic stem cells specifically match a cluster of four human miRNAs (mir-302a, b, c&d) known to be expressed in embryonic stem cells. LongSAGE data also suggest the existence of a mouse homolog of human and rat mir-493. Conclusion: The observation that some orphan longSAGE tags uniquely match miRNA precursors provides information about the expression of some known and predicted miRNAs.

Original languageEnglish (US)
Article number285
JournalBMC genomics
StatePublished - Nov 7 2006
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Genetics


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