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
- 22 Dysregulation of microRNAs in human malignancy
- 23 High throughput microRNAs profiling in cancers
- 24 Roles of microRNAs in cancer and development
- 25 miR-122 in mammalian liver
- 26 MiRNAs in glioblastoma
- 27 Role of microRNA pathway in Fragile X mental retardation
- 28 Insertion of miRNA125b-1 into immunoglobulin heavy chain gene locus mediated by V(D)J recombination in precursor B cell acute lymphoblastic leukemia
- 29 miRNAs in TPA-induced differentiation of HL-60 cells
- 30 MiRNAs in skeletal muscle differentiation
- 31 Identification and potential function of viral microRNAs
- 32 Lost in translation: regulation of HIV-1 by microRNAs and a key enzyme of RNA-directed RNA polymerase
- VI MicroRNAs in stem cell development
- Index
- Plate section
- References
32 - Lost in translation: regulation of HIV-1 by microRNAs and a key enzyme of RNA-directed RNA polymerase
from V - MicroRNAs in disease biology
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
- 22 Dysregulation of microRNAs in human malignancy
- 23 High throughput microRNAs profiling in cancers
- 24 Roles of microRNAs in cancer and development
- 25 miR-122 in mammalian liver
- 26 MiRNAs in glioblastoma
- 27 Role of microRNA pathway in Fragile X mental retardation
- 28 Insertion of miRNA125b-1 into immunoglobulin heavy chain gene locus mediated by V(D)J recombination in precursor B cell acute lymphoblastic leukemia
- 29 miRNAs in TPA-induced differentiation of HL-60 cells
- 30 MiRNAs in skeletal muscle differentiation
- 31 Identification and potential function of viral microRNAs
- 32 Lost in translation: regulation of HIV-1 by microRNAs and a key enzyme of RNA-directed RNA polymerase
- VI MicroRNAs in stem cell development
- Index
- Plate section
- References
Summary
The annual labor of every nation is the fund which originally supplies it with all the necessaries and conveniences of life which it annually consumes, and which consist always either in the immediate produce of that labor, or in what is purchased with that produce from other nations.
Adam SmithIntroduction
The human immunodeficiency virus type 1 (HIV-1) gene, nef, is located at the 3′ end of the viral genome and partially overlaps the 3′-long terminal repeat (LTR). The nef gene is expressed during HIV infection and often accounts for up to 80% of HIV-1-specific RNA transcripts during the early stages of viral replication (Robert-Guroff et al., 1990). Because HIV-1 LTR activity is down-regulated just a few hours after induction by Tat, this may contribute to viral latency (Drysdale and Pavlakis, 1991). However, the mechanism of this down-regulation of Tat transactivation as well as accumulation of nef RNAs is not completely clear. MicroRNAs (miRNAs) are 21–25 nucleotides (nt) long and directed selectively to targeting sequences of mRNAs to trigger either translational repression or RNA cleavage through RNA interference (RNAi) (Zeng et al., 2003; Yekta et al., 2004). However, RNAi had not been found in mammals by functional assays, as observed naturally in plants, fungi, insects or nematodes (Fire et al., 1998; Tuschl et al., 1999; Ketting et al., 1999; Tabara et al., 1999; Aravin et al., 2001; Baulcombe, 2001; Sijen and Plasterk, 2003).
- Type
- Chapter
- Information
- MicroRNAsFrom Basic Science to Disease Biology, pp. 427 - 442Publisher: Cambridge University PressPrint publication year: 2007