A flow cytometric method for measuring lymphocyte proliferation directly from tissue culture plates using Ki-67 and propidium iodide

1987 ◽  
Vol 105 (1) ◽  
pp. 97-105 ◽  
Author(s):  
M. Palutke ◽  
D. KuKuruga ◽  
P. Tabaczka
Cytometry ◽  
1994 ◽  
Vol 17 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Francis Belloc ◽  
Patrice Dumain ◽  
Michel R. Boisseau ◽  
Claudine Jalloustre ◽  
Josy Reiffers ◽  
...  

2020 ◽  
Vol 90 (5) ◽  
pp. 517-525
Author(s):  
Gordana Joksić ◽  
◽  
Jelena Filipović Tričković ◽  
Mileva Mićić ◽  
Ivana Joksić ◽  
...  

Traditional methods in cell proliferation studies are based on immunohistochemical detection of proliferating cells in the target tissue. Since they are time consuming, optimization of novel, more efficient methods is important for large scale proliferation studies. In this study, we aimed to optimize the isolation of single epithelial rat forestomach cells for flow cytometry. As a marker of cellular proliferation we used the Ki-67 antibody to detect this nuclear protein expressed in proliferating cells. We also performed immunohistochemical detection of Ki-67 positive cells and propidium iodide staining to validate the results. 3-tert- butyl -4-hydroxyanisole was used as the positive control to ensure cellular proliferation. The results showed that isolation of epithelial cells with collagenase, trypsin and cell strainer ensures great cell viability (>95%) and the purity of the samples. Flow cytometry and immunostaining with the Ki-67 antibody indicated that 3-tert- butyl-4-hydroxyanisole treatment leads to a significant increase in proliferation. A significant positive correlation was observed between the results obtained by immunohistochemistry and flow cytometry, but the flow cytometric data had a smaller measurement error, suggesting the equal sensitivity and greater accuracy of this method. Propidium iodide staining showed that the percentage of cells in the G2+S phase of the cell cycle correlated positively with the percentage of Ki-67 positive cells assessed by flow cytometry, indicating that Ki-67 positive cells reflect an active dividing cell pool. We conclude that the isolation of forestomach epithelial cells described is a simple and reliable method for obtaining viable cells for use in flow cytometry. Compared to immunohistochemistry, flow cytometric detection of the Ki-67 antigen is equally sensitive, but much faster and provides more accurate results.


1997 ◽  
Vol 202 (2) ◽  
pp. 105-111 ◽  
Author(s):  
Michael A Model ◽  
Mark A KuKuruga ◽  
Robert F Todd

Cytometry ◽  
1989 ◽  
Vol 10 (6) ◽  
pp. 726-730 ◽  
Author(s):  
Maria Chiara Giangarè ◽  
Ennio Prosperi ◽  
Guido Pedrali-Noy ◽  
Giovanni Bottiroli

1997 ◽  
Vol 97 (1) ◽  
pp. 141-145 ◽  
Author(s):  
E. C. M. Hendriks ◽  
A. J. M. De Man ◽  
Y. C. M. Van Berkel ◽  
S. Stienstra ◽  
T. De Witte

Cytometry ◽  
1991 ◽  
Vol 12 (1) ◽  
pp. 50-63 ◽  
Author(s):  
Dirk R. Van Bockstaele ◽  
Jar Lan ◽  
Hans-W. Snoeck ◽  
Marcel L. Korthout ◽  
Robrecht F. De Bock ◽  
...  

2006 ◽  
Vol 315 (1-2) ◽  
pp. 1-10 ◽  
Author(s):  
Wannee Kantakamalakul ◽  
Kovit Pattanapanyasat ◽  
Surat Jongrakthaitae ◽  
Vatcharain Assawadarachai ◽  
Silawun Ampol ◽  
...  

2017 ◽  
Vol 92 (6) ◽  
pp. 498-507 ◽  
Author(s):  
Julien Guy ◽  
Orianne Wagner-Ballon ◽  
Olivier Pages ◽  
François Bailly ◽  
Jessica Borgeot ◽  
...  

2019 ◽  
Vol 15 (11) ◽  
Author(s):  
Thays Saynara Alves Menezes-Sá ◽  
Maria de Fátima Arrigoni-Blank ◽  
Andréa Santos da Costa ◽  
Janay De Almeida Santos-Serejo ◽  
Arie Fitzgerald Blank ◽  
...  

Chromosome doubling induction in orchids may benefit their production for resulting in flowers of higher commercial value, larger size and higher content of substances that intensify the color and fragrance when compared with diploid orchids. This work aimed to induce and confirm artificial polyploidization, using flow cytometry and stomatal analysis. Explants were treated with colchicine at concentrations of 0, 2.5, 7.5, and 12.5 mM, for 24 and 48 hours and with oryzalin, at concentrations of 0, 10, 30, and 50 μM, for three and six days. For the flow cytometric analysis, a sample of leaf tissue was removed from each plant, crushed to release the nuclei and stained with propidium iodide. In addition to flow cytometry, the ploidy of the antimitotic treated plants was evaluated by stomata analysis. Young leaves were used where the density, functionality and stomatal index were evaluated. Colchicine provided induction of satisfactory polyploidy in C. tigrina at all concentrations and times of exposure, obtaining a greater number of polyploid individuals in the concentration of 12.5 mM for 48 hours. Oryzalin did not induce chromosome duplication at the tested concentrations.


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