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Genetic compensation: A phenomenon in search of mechanisms.

TLDR
This review revisits studies reporting genetic compensation in higher eukaryotes and outlines possible molecular mechanisms, which may include both transcriptional and posttranscriptional processes.
Abstract
Several recent studies in a number of model systems including zebrafish, Arabidopsis, and mouse have revealed phenotypic differences between knockouts (i.e., mutants) and knockdowns (e.g., antisense-treated animals). These differences have been attributed to a number of reasons including off-target effects of the antisense reagents. An alternative explanation was recently proposed based on a zebrafish study reporting that genetic compensation was observed in egfl7 mutant but not knockdown animals. Dosage compensation was first reported in Drosophila in 1932, and genetic compensation in response to a gene knockout was first reported in yeast in 1969. Since then, genetic compensation has been documented many times in a number of model organisms; however, our understanding of the underlying molecular mechanisms remains limited. In this review, we revisit studies reporting genetic compensation in higher eukaryotes and outline possible molecular mechanisms, which may include both transcriptional and posttranscriptional processes.

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Dissociative Effects of Neuropeptide S Receptor Deficiency and Nasal Neuropeptide S Administration on T-Maze Discrimination and Reversal Learning

TL;DR: In this article, the role of the neuropeptide S (NPS) system in cognitive flexibility was investigated for T-maze discrimination and reversal learning in mice. But, the NPS system was not able to improve the performance of the T maze discrimination.
Posted ContentDOI

Allosteric MAPKAPK2 Inhibitors Improve Plaque Stability in Advanced Atherosclerosis

TL;DR: In this article, the authors developed two small-molecule inhibitors of mitogen-activated protein kinase-activated Protein Kinase-2 (MK2) in obese mice, and tested their effects on metabolism and atherosclerosis in high-fat Western diet-fed Ldlr-/- mice.
Journal ArticleDOI

Pipeline for generating stable large genomic deletions in zebrafish, from small domains to whole gene excisions.

TL;DR: In this article, a short feasibility study and methodological framework for the production of stable, CRISPR/Cas9-based, large genomic deletions in zebrafish, ranging from several base pairs (bp) to hundreds of kilobases (kb).
Journal ArticleDOI

Semantic clustering analysis of E3-ubiquitin ligases in gastrointestinal tract defines genes ontology clusters with tissue expression patterns

TL;DR: In this paper , a semantic biclustering technique was used for expression profiling of Ub-ligases and ubiquitination-related genes in the murine gastrointestinal tract (GIT).
Posted ContentDOI

Functional buffering via cell-specific gene expression promotes tissue homeostasis and cancer robustness

TL;DR: In this paper, an inference index (C-score) for cell-specific Expression-BUffering (CEBU) was developed, whereby functional buffering is mediated via expression of buffering genes in specific cells and tissues in humans.
References
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Journal ArticleDOI

Network biology: understanding the cell's functional organization

TL;DR: This work states that rapid advances in network biology indicate that cellular networks are governed by universal laws and offer a new conceptual framework that could potentially revolutionize the view of biology and disease pathologies in the twenty-first century.
Journal ArticleDOI

Mechanisms of post-transcriptional regulation by microRNAs: are the answers in sight?

TL;DR: This Review summarizes the current understanding of the mechanistic aspects of microRNA-induced repression of translation and discusses some of the controversies regarding different modes of micro RNA function.
Journal ArticleDOI

Functional profiling of the Saccharomyces cerevisiae genome.

Guri Giaever, +72 more
- 25 Jul 2002 - 
TL;DR: It is shown that previously known and new genes are necessary for optimal growth under six well-studied conditions: high salt, sorbitol, galactose, pH 8, minimal medium and nystatin treatment, and less than 7% of genes that exhibit a significant increase in messenger RNA expression are also required for optimal Growth in four of the tested conditions.
Journal ArticleDOI

Gene Action in the X -chromosome of the Mouse ( Mus musculus L.)

TL;DR: Ohno and Hauschka1 showed that in female mice one chromosome of mammary carcinoma cells and of normal diploid cells of the ovary, mammary gland and liver was heteropyKnotic and suggested that the so-called sex chromatin was composed of one heteropyknotic X-chromosome.
Journal ArticleDOI

The Transcriptional Landscape of the Mammalian Genome

Piero Carninci, +197 more
- 02 Sep 2005 - 
TL;DR: Detailed polling of transcription start and termination sites and analysis of previously unidentified full-length complementary DNAs derived from the mouse genome provide a comprehensive platform for the comparative analysis of mammalian transcriptional regulation in differentiation and development.
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