Articolele autorului Gabriel Balmus
Link la profilul stiintific al lui Gabriel Balmus

Synthetic lethality between PAXX and XLF in mammalian development.
A Genome-Wide Association Study for Regulators of Micronucleus Formation in Mice.
Specific Roles of XRCC4 Paralogs PAXX and XLF during V(D)J Recombination.
Hsp90 and PKM2 Drive the Expression of Aromatase in Li-Fraumeni Syndrome Breast Adipose Stromal Cells.
HUS1 regulates in vivo responses to genotoxic chemotherapies

Cells are under constant attack from genotoxins and rely on a multifaceted DNA damage response (DDR) network to maintain genomic integrity. Central to the DDR are the ATM and ATR kinases, which respond primarily to double-strand DNA breaks (DSBs) and replication stress, respectively. Optimal ATR signaling requires the RAD9A-RAD1-HUS1 (9-1-1) complex, a toroidal clamp that is loaded at damage sites and scaffolds signaling and repair factors. Whereas

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A high-throughput in vivo micronucleus assay for genome instability screening in mice

We describe a sensitive, robust, high-throughput method for quantifying the formation of micronuclei, markers of genome instability, in mouse erythrocytes. Micronuclei are whole chromosomes or chromosome segments that have been separated from the nucleus. Other methods of detection rely on labor-intensive, microscopy-based techniques. Here we describe a 2-d, 96-well plate–based flow cytometric method of micronucleus scoring that is simple enough

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p53 Protein Regulates Hsp90 ATPase Activity and Thereby Wnt Signaling by Modulating Aha1 Expression

The p53 tumor suppressor gene encodes a homotetrameric transcription factor which is activated in response to a variety of cellular stressors, including DNA damage and oncogene activation. p53 mutations occur in >50% of human cancers. Although p53 has been shown to regulate Wnt signaling, the underlying mechanisms are not well understood. Here we show that silencing p53 in colon cancer cells led to increased expression of Aha1, a co-chaperone of

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Genetic screens in mice for genome integrity maintenance and cancer predisposition

Genome instability is a feature of nearly all cancers and can be exploited for therapy. In addition, a growing number of genome maintenance genes have been associated with developmental disorders. Efforts to understand the role of genome instability in these processes will be greatly facilitated by a more comprehensive understanding of their genetic network. We highlight recent genetic screens in model organisms that have assisted in the discovery

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Disease severity in a mouse model of Ataxia Telangiectasia is modulated by the DNA damage checkpoint gene Hus1.

The human genomic instability syndrome Ataxia Telangiectasia (A-T), caused by mutations in the gene encoding the DNA damage checkpoint kinase ATM, is characterized by multisystem defects including neurodegeneration, immunodeficiency, and increased cancer predisposition. ATM is central to a pathway that responds to double strand DNA breaks, while the related kinase ATR leads a parallel signaling cascade that is activated by replication stress. To

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The DNA damage checkpoint protein ATM promotes hepatocellular apoptosis and fibrosis in a mouse model of non-alcoholic fatty liver disease

Steatoapoptosis is a hallmark of non-alcoholic fatty liver disease (NAFLD) and is an important factor in liver disease progression. We hypothesized that increased reactive oxygen species resulting from excess dietary fat contribute to liver disease by causing DNA damage and apoptotic cell death, and tested this by investigating the effects of feeding mice high fat or standard diets for 8 weeks. High fat diet feeding resulted in increased hepatic

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