Mature Let-7 miRNAs fine tune expression of LIN28B in pluripotent human embryonic stem cells

Research output: Contribution to journalArticle


Research units

  • Turku Centre for Biotechnology
  • University of Washington


MicroRNAs (miRNA) are central regulators of diverse biological processes and are important in the regulation of stem cell self-renewal. One of the widely studied miRNA-protein regulators is the Lin28-Let-7 pair. In this study, we demonstrate that contrary to the well-established models of mouse ES cells (mESC) and transformed human cancer cells, the pluripotent state of human ES cells (hESC) involves expression of mature Let-7 family miRNAs with concurrent expression of all LIN28 proteins. We show that mature Let-7 miRNAs are regulated during hESC differentiation and have opposite expression profile with LIN28B. Moreover, mature Let-7 miRNAs fine tune the expression levels of LIN28B protein in pluripotent hESCs, whereas silencing of LIN28 proteins have no effect on mature Let-7 levels. These results bring novel information to the highly complex network of human pluripotency and suggest that maintenance of hESC pluripotency differs greatly from the mESCs in regard to LIN28-Let-7 regulation.


Original languageEnglish
Pages (from-to)498-503
Number of pages6
Issue number3
Publication statusPublished - 1 Nov 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • Human embryonic stem cell, Let-7, LIN28, Pluripotency

Download statistics

No data available

ID: 9309647