Book contents
- Frontmatter
- Contents
- List of contributors
- Foreword by Sidney Altman
- Foreword by Victor R. Ambros
- Introduction
- I Discovery of microRNAs in various organisms
- II MicroRNA functions and RNAi-mediated pathways
- III Computational biology of microRNAs
- IV Detection and quantitation of microRNAs
- V MicroRNAs in disease biology
- VI MicroRNAs in stem cell development
- 33 MicroRNAs in the stem cells of the mouse blastocyst
- 34 The role of miRNA in hematopoiesis
- 35 MicroRNAs in embryonic stem cell differentiation and prediction of their targets
- 36 Generation of single cell microRNA expression profile
- 37 Piwi-interacting RNAs (piRNAs)
- 38 MicroRNAs in immunology, cardiology, diabetes, and unicellular organisms
- Index
- Plate section
- References
35 - MicroRNAs in embryonic stem cell differentiation and prediction of their targets
from VI - MicroRNAs in stem cell development
Published online by Cambridge University Press: 22 August 2009
- Frontmatter
- Contents
- List of contributors
- Foreword by Sidney Altman
- Foreword by Victor R. Ambros
- Introduction
- I Discovery of microRNAs in various organisms
- II MicroRNA functions and RNAi-mediated pathways
- III Computational biology of microRNAs
- IV Detection and quantitation of microRNAs
- V MicroRNAs in disease biology
- VI MicroRNAs in stem cell development
- 33 MicroRNAs in the stem cells of the mouse blastocyst
- 34 The role of miRNA in hematopoiesis
- 35 MicroRNAs in embryonic stem cell differentiation and prediction of their targets
- 36 Generation of single cell microRNA expression profile
- 37 Piwi-interacting RNAs (piRNAs)
- 38 MicroRNAs in immunology, cardiology, diabetes, and unicellular organisms
- Index
- Plate section
- References
Summary
Introduction
Embryonic stem cells (ESCs) exhibit the capacity for unlimited self-renewal and the ability to differentiate into multiple cell lineages, and are termed pluripotent (Smith, 2001; Czyz et al., 2003). The study of mammalian ESCs may facilitate understanding of early developmental events and contribute to the advance of cell-based regenerative medicine (Loebel at al., 2003). ESCs are isolated from the inner cell mass (ICM) of the pre-implantation embryo (Evans and Kaufman, 1981) and share many properties with pluripotent cells from the ICM (Figure 35.1). These include the expression of key regulators of pluripotency and self-renewal, Oct4, Sox2 and Nanog, and the capacity to differentiate to all cell types of the embryo, including mesoderm, ectoderm and endoderm (Orkin, 2005). Oct4 is activated at the four cell stage of mouse pre-implantation development and is essential for the formation of the ICM (Chew et al., 2005). Increased Oct4 levels in mouse ESCs (mESCs) result in differentiation to primitive endoderm and mesoderm, whereas a reduction leads to differentiation to trophectoderm (Niwa et al., 2000). Co-regulation of genes by Oct4 and Sox2 appears to be essential in maintaining self-renewal of ESCs (Chew et al., 2005). Nanog acts in concert with Oct4 and Sox2, where Nanog overexpression negates the requirement for leukemia-inhibitory factor (LIF)-activated signaling by mESCs for self-renewal (Mitsui et al., 2003). Nanog knockout results in differentiation of mESCs into parietal/visceral endoderm (Mitsui et al., 2003).
- Type
- Chapter
- Information
- MicroRNAsFrom Basic Science to Disease Biology, pp. 476 - 488Publisher: Cambridge University PressPrint publication year: 2007