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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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Genetic Knock-out of TNFR1 and TNFR2 in a JAK2-V617F Polycythemia Vera Mouse Model

TL;DR: In this paper , the influence of the TNFα receptors TNFR1 and TNFR2 on MPN development by disrupting the respective genes in the aforementioned JAK2+/VF PV-like mouse model was studied.
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Comparative Morphological, Metabolic and Transcriptome Analyses in elmo1 −/− , elmo2 −/− , and elmo3 −/− Zebrafish Mutants Identified a Functional Non-Redundancy of the Elmo Proteins

TL;DR: Together, the data demonstrated that the three zebrafish Elmo proteins regulate not only similar but also divergent biological processes and mechanisms and show a low functional redundancy.
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Non-coding RNAs associated with Prader–Willi syndrome regulate transcription of neurodevelopmental genes in human induced pluripotent stem cells

TL;DR: In this article , the authors analyzed chromatin-associated RNA in human induced pluripotent cells (iPSCs) upon depletion of hybrid small nucleolar long non-coding RNAs (sno-lncRNAs) and 5' snoRNA capped and polyadenylated long noncodingRNAs (SPA- lnc RNAs) transcribed from the locus deleted in Prader-Willi syndrome (PWS).

without Effect on Gametocytemia Permeability and Alters Parasite Transmission to Mosquitoes Immune Response and Malaria-Induced Intestinal The Basophil IL-18 Receptor Precisely Regulates the Host

TL;DR: Early basophil-dependent protection of the intestinal barrier in malaria is suggest that IL-18 – dependent signaling differentially regulates the inflammatory response to infection and parasite transmission.
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Robustness of the Autophagy Pathway to Somatic Copy Number Losses

TL;DR: In this paper , the authors used CRISPR/Cas9 technology to delete increasing numbers of copies of one or more of these ATGs in non-small cell lung cancer cells and examined the effects on sensitivity to compounds targeting aerobic glycolysis, a hallmark of cancer metabolism.
References
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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.
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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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