Automated Live Microscopy to Study Mitotic Gene Function in Fluorescent Reporter Cell Lines

Author(s):  
Michael H.A. Schmitz ◽  
Daniel W. Gerlich
2013 ◽  
Vol 698 (1-3) ◽  
pp. 131-136 ◽  
Author(s):  
Frank Wunder ◽  
Annette Woermann ◽  
Andreas Geerts ◽  
Markus Milde

PLoS ONE ◽  
2010 ◽  
Vol 5 (10) ◽  
pp. e13524 ◽  
Author(s):  
Irina Issaeva ◽  
Ariel A. Cohen ◽  
Eran Eden ◽  
Cellina Cohen-Saidon ◽  
Tamar Danon ◽  
...  

2009 ◽  
Vol 9 (S1) ◽  
Author(s):  
Frank Wunder ◽  
Daniel Barufe ◽  
Annette Woermann ◽  
Markus Milde

Luminescence ◽  
2001 ◽  
Vol 16 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Patrick Balaguer ◽  
Anne-Marie Boussioux ◽  
Ediz Demirpence ◽  
Jean-Claude Nicolas

2014 ◽  
Vol 13 (2) ◽  
pp. 251-261 ◽  
Author(s):  
Dmitry A. Ovchinnikov ◽  
Drew M. Titmarsh ◽  
Patrick R.J. Fortuna ◽  
Alejandro Hidalgo ◽  
Samah Alharbi ◽  
...  

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Piotr Humeniuk ◽  
Sabine Geiselhart ◽  
Claire Battin ◽  
Tonya Webb ◽  
Peter Steinberger ◽  
...  

Cells ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 75 ◽  
Author(s):  
Sebastian Escobar-Aguirre ◽  
Duxan Arancibia ◽  
Amanda Escorza ◽  
Cristián Bravo ◽  
María Andrés ◽  
...  

The clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9 (CRISPR/Cas9) system has been widely used in animals as an efficient genome editing tool. In fish cells, the technique has been difficult to implement due to the lack of proper vectors that use active promoters to drive the expression of both small guide RNA (sgRNA) and the S. pyogenes Cas9 (spCas9) protein within a single expression platform. Until now, fish cells have been modified using co-transfection of the mRNA of both the sgRNA and the spCas9. In the present study, we describe the optimization of a new vector for the expression of a CRISPR/Cas9 system, designed to edit the genome of fish cell lines, that combines a gene reporter (mCherry), sgRNA, and spCas9 in a single vector, facilitating the study of the efficiency of piscine and non-piscine promoters. A cassette containing the zebrafish U6 RNA III polymerase (U6ZF) promoter was used for the expression of the sgRNA. The new plasmid displayed the expression of spCas9, mCherry, and sgRNA in CHSE/F fish cells. The results demonstrate the functionality of the mammalian promoter and the U6ZF promoter in fish cell lines. This is the first approach aimed at developing a unified genome editing system in fish cells using bicistronic vectors, thus creating a powerful biotechnological platform to study gene function.


2019 ◽  
Vol 74 (7-8) ◽  
pp. 193-200
Author(s):  
Monika Stompor ◽  
Marta Świtalska ◽  
Agata Bajek ◽  
Joanna Wietrzyk

Abstract Novel biotinylated C-6 substituted flavones were synthesised by a one-step method that connects biotin to 6-hydroxyflavone and 6-aminoflavone by esterification and amidation of hydroxyl and amino groups, respectively. The obtained compounds, 6-O-biotinylflavone and 6-biotinylamidoflavone, are the bifunctional molecules composed of a flavone moiety as a fluorescent reporter and biotin as a cancer-targeting unit. Antiproliferative activity was evaluated using SRB assays in MCF-7, MCF-10A, HepG2, MDA-MB-231, 4T1, and Balb/3T3 cell lines. In vitro evaluation revealed that compounds with biotin moiety displayed better cell selectivity between the cancer and normal cells than the parental substrates. These results indicate that anticancer effect is not related to the position of biotin moiety, but it is related to the presence of ester or amide bond. 6-O-Biotinylflavone was more active than 6-hydroxyflavone against human breast (MDA-MB-231) and liver (HepG2) cancer cells with IC50 (concentration of tested agent that inhibits proliferation of the cell population by 50%) values equal to 78.5 ± 18.8 μM and 133.2 ± 14.2 μM, respectively. Non biotinylated 6-aminoflavone was more active than 6-biotinylamidoflavone against all tested cell lines, with IC50 values between 34.3 ± 9.1 μM (4T1) and 173.86 ± 24.3 μM (MCF-7).


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