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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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Journal ArticleDOI

Reduction of mutant ATXN1 rescues premature death in a conditional SCA1 mouse model

TL;DR: It is concluded that a 50% or greater reduction of the mutant protein has a dramatic effect on disease onset and progression; furthermore, expression of polyglutamine-expanded ATXN1 at this level specifically in motor neurons is not sufficient to cause premature lethality.
Journal ArticleDOI

Metabolic Rewiring toward Oxidative Phosphorylation Disrupts Intrinsic Resistance to Ferroptosis of the Colon Adenocarcinoma Cells

TL;DR: In this paper , the authors used human colon adenocarcinoma (CRC) cells, highly resistant to GPX4 inhibition, to investigate the role metabolism plays in this phenomenon.
Journal ArticleDOI

Zebrafish Wtx is a negative regulator of Wnt signaling but is dispensable for embryonic development and organ homeostasis.

TL;DR: Functional data suggest WTX to be an inhibitor of the Wnt/β‐catenin signaling pathway, and deletion of Wtx in mouse leads to perinatal death, impeding the analysis of its physiological role.
Posted ContentDOI

Zebrafish Polycomb repressive complex-2 critical roles are largely Ezh2- over Ezh1-driven and concentrate during early embryogenesis

TL;DR: Zhang et al. as mentioned in this paper combined new and existing zebrafish ezh1 and ezh2 alleles to show collective maternal/zygotic ezhII exclusively provides earliest embryonic PRC2 H3K27me3 activity.
Journal ArticleDOI

The role of Jacalin-related lectin gene AOL_s00083g511 in the development and pathogenicity of the nematophagous fungus Arthrobotrys oligospora.

TL;DR: In this article, the role of the Jacalin-related lectin (JRL) gene, AOL_s00083g511, in A. oligospora development was investigated.
References
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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.
Journal ArticleDOI

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Guri Giaever, +72 more
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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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