Book contents
- Frontmatter
- Contents
- List of contributors
- Foreword by Sidney Altman
- Foreword by Victor R. Ambros
- Introduction
- I Discovery of microRNAs in various organisms
- 1 The microRNAs of C. elegans
- 2 Non-coding RNAs – development of man-made vector-based intronic microRNAs (miRNAs)
- 3 Seeing is believing: strategies for studying microRNA expression
- 4 MicroRNAs in limb development
- 5 Identification of miRNAs in the plant Oryza sativa
- 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
- Index
- Plate section
- References
2 - Non-coding RNAs – development of man-made vector-based intronic microRNAs (miRNAs)
from I - Discovery of microRNAs in various organisms
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
- 1 The microRNAs of C. elegans
- 2 Non-coding RNAs – development of man-made vector-based intronic microRNAs (miRNAs)
- 3 Seeing is believing: strategies for studying microRNA expression
- 4 MicroRNAs in limb development
- 5 Identification of miRNAs in the plant Oryza sativa
- 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
- Index
- Plate section
- References
Summary
Introduction
The central dogma of molecular biology is that genomic DNA is transcribed into messenger RNA (mRNA) which is translated into proteins. This dogma has recently been challenged because some segments of the DNA transcribed into the mRNA precursor (pre-mRNA) are not necessarily translated into proteins. Instead, these RNAs regulate the expression of other genes. The segments of the DNA which function directly as regulatory RNAs rather than coding for protein products are called non-coding RNAs. In the human genome, the vast majority (nearly 95%) of DNA is of the non-coding variety. Frequently diseases are associated with malfunction of the non-coding RNA. We present here the historical background and significance of non-coding RNA research, with a particular eye to the current status of work on the microRNAs and future prospects for development of artificial intronic microRNAs (miRNAs). These miRNAs can play critical roles in development, protein secretion, and gene regulation. Some of them are naturally occurring antisense and hairpin RNAs whereas others have more complex structures. To understand the diseases caused by dysregulation of these miRNAs, a tissue-specific expression system is needed to recreate the function and mechanism of individual miRNA in vitro and in vivo.
Non-coding RNAs
The non-coding RNA (ncRNA) can be defined as segments of a RNA molecule that are not translated into a protein, but function in modulating the synthesis of proteins.
- Type
- Chapter
- Information
- MicroRNAsFrom Basic Science to Disease Biology, pp. 22 - 41Publisher: Cambridge University PressPrint publication year: 2007