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Open AccessJournal ArticleDOI

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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Kir6.1-dependent KATP channels in lymphatic smooth muscle and vessel dysfunction in mice with Kir6.1 gain-of-function.

TL;DR: The high sensitivity of LSM to KATP channel GoF offers an explanation for the lymphoedema observed in patients with Cantú syndrome, a disorder caused by gain‐of‐function mutations in genes encoding Kir6.1 or SUR2, and suggests that glibenclamide may be an appropriate therapeutic agent.
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Combined shRNA over CRISPR/cas9 as a methodology to detect off-target effects and a potential compensatory mechanism.

TL;DR: A combination of RNA inhibition and CRISPR/cas9 methods to identify possible off targets as well as potential compensatory effects are presented and it is clearly demonstrated that the Sema4B targeted shRNA effects on cell proliferation is the result of off-target effects.
Journal ArticleDOI

Fishing forward and reverse: Advances in zebrafish phenomics.

TL;DR: The genetic and quantitative tools available in the zebrafish model, coupled with the broad spectrum of phenotypes that can be assayed, make it a powerful model for phenomics, well suited for the dissection of genotype-phenotype associations in development, physiology, health and disease.
Journal ArticleDOI

Albumin uptake and processing by the proximal tubule: physiological, pathological, and therapeutic implications

TL;DR: The mechanisms of albumin reabsorption, catabolism and transcytosis are being reexamined utilizing techniques that allow for novel molecular and cellular discoveries including discussing genetic disorders and therapeutic considerations.
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.
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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.
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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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