The role of yan in mediating the choice between cell division and differentiation

Development ◽  
1995 ◽  
Vol 121 (12) ◽  
pp. 3947-3958 ◽  
Author(s):  
R. Rogge ◽  
P.J. Green ◽  
J. Urano ◽  
S. Horn-Saban ◽  
M. Mlodzik ◽  
...  

An allele of the yan locus was isolated as an enhancer of the Ellipse mutation of the Drosophila epidermal growth factor receptor (Egfr) gene. This yan allele is an embryonic lethal and also fails to complement the lethality of anterior open (aop) mutations. Phenotypic and complementation analysis revealed that aop is allelic to yan and genetically the lethal alleles act as null mutations for the yan gene. Analysis of the lethal alleles in the embryo and in mitotic clones showed that loss of yan function causes cells to overproliferate in the dorsal neuroectoderm of the embryo and in the developing eye disc. Our studies suggest that the role of yan is defined by the developmental context of the cells in which it functions. An important role of this gene is in allowing a cell to choose between cell division and differentiation. The relationship of the Egfr and Notch pathways to this developmental role of yan is discussed.

2018 ◽  
Author(s):  
Christopher R. M. Asquith ◽  
Kaleb M. Naegeli ◽  
Michael P. East ◽  
Tuomo Laitinen ◽  
Tammy M. Havener ◽  
...  

ABSTRACTWe describe the design of a set of inhibitors to investigate the relationship between cyclin G associated kinase (GAK) and epidermal growth factor receptor (EGFR) in chordoma bone cancers. These compounds were characterized both in vitro and using in cell target engagement assays. The most potent chordoma inhibitors were further characterized in a kinome-wide screen demonstrating narrow spectrum profiles.


2020 ◽  
Vol 31 (1) ◽  
pp. 43
Author(s):  
Andy Lumban gaol ◽  
Suryanti Dwi Pratiwi ◽  
Ngakan Putu Putra ◽  
Eviana Norahmawati ◽  
Harun Al Rasyid

<p>There is a correlation between mutation of Epidermal Growth Factor Receptor (EGFR) and lung adenocarcinoma. Unfortunately, examination for EGFR mutation is difficult because surgery must be conducted to obtain the best specimen. Thyroid Transcription Factor-1 (TTF-1) is a marker for lung adenocarcinoma. This observational study took place at Dr. Saiful Anwar Hospital from stored biological materials from 2013-2018. Samples were lung adenocarcinoma patients that undergo EGFR examination. Data then analyzed using Fischer's Exact Test to determine the relationship between EGFR and TTF-1. Specificity/sensitivity value is 0.75/0.90, p: 0.617, odds ratio 0.333 (0.032-3.515). However, Receiver Operating Characteristic (ROC) curve of TTF- 1 show AUC 0.614 (95CI, 0.35- 0.878). TTF-1 examination has a moderate strength in determining EGFR mutation on lung adenocarcinoma patients at Dr. Saiful Anwar Hospital.         </p>


2020 ◽  
Vol 17 (6) ◽  
pp. 76-91
Author(s):  
E. D. Solozhentsev

The scientific problem of economics “Managing the quality of human life” is formulated on the basis of artificial intelligence, algebra of logic and logical-probabilistic calculus. Managing the quality of human life is represented by managing the processes of his treatment, training and decision making. Events in these processes and the corresponding logical variables relate to the behavior of a person, other persons and infrastructure. The processes of the quality of human life are modeled, analyzed and managed with the participation of the person himself. Scenarios and structural, logical and probabilistic models of managing the quality of human life are given. Special software for quality management is described. The relationship of human quality of life and the digital economy is examined. We consider the role of public opinion in the management of the “bottom” based on the synthesis of many studies on the management of the economics and the state. The bottom management is also feedback from the top management.


2019 ◽  
Vol 58 (2) ◽  
pp. 249-259
Author(s):  
Joseph Acquisto

This essay examines a polemic between two Baudelaire critics of the 1930s, Jean Cassou and Benjamin Fondane, which centered on the relationship of poetry to progressive politics and metaphysics. I argue that a return to Baudelaire's poetry can yield insight into what seems like an impasse in Cassou and Fondane. Baudelaire provides the possibility of realigning metaphysics and politics so that poetry has the potential to become the space in which we can begin to think the two of them together, as opposed to seeing them in unresolvable tension. Or rather, the tension that Baudelaire animates between the two allows us a new way of thinking about the role of esthetics in moments of political crisis. We can in some ways see Baudelaire as responding, avant la lettre, to two of his early twentieth-century readers who correctly perceived his work as the space that breathes a new urgency into the questions of how modern poetry relates to the world from which it springs and in which it intervenes.


Author(s):  
Steven Banik ◽  
Kayvon Pedram ◽  
Simon Wisnovsky ◽  
Nicholas Riley ◽  
Carolyn Bertozzi

<p>Targeted protein degradation is a powerful strategy to address the canonically undruggable proteome. However, current technologies are limited to targets with cytosolically-accessible and ligandable domains. Here, we designed and synthesized conjugates capable of binding both a cell surface lysosome targeting receptor and the extracellular domain of a target protein. These lysosome targeting chimeras (LYTACs) consist of an antibody fused to agonist glycopeptide ligands for the cation-independent mannose-6-phosphate receptor (CI-M6PR). LYTACs enabled a CRISPRi knockdown screen revealing the biochemical pathway for CI-M6PR-mediated cargo internalization. We demonstrated that LYTACs mediate efficient degradation of Apolipoprotein-E4, epidermal growth factor receptor (EGFR), CD71, and programmed death-ligand 1 (PD-L1). LYTACs represent a modular strategy for directing secreted and membrane proteins for degradation in the context of both basic research and therapy. <b></b></p>


Author(s):  
Pavel Agapov ◽  
Kirill Stepkin

The article considers the general theoretical foundations of the relationship of sectarianism and religious extremism in the Russian Federation. Practical examples of the role of destructive sects in modern religious extremism in the Russian Federation are given.


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