Synthesis and Study of Organoselenium Compound: DNA/Protein Interactions, In Vitro Antibacterial, Antioxidant, Anti-Inflammatory Activities and Anticancer Activity against Carcinoma Cells

2021 ◽  
pp. 130914
Author(s):  
Divyesh S. Shela ◽  
Pratik P. Dhavan ◽  
Pinky R. Singh ◽  
Bhaskar L. Jadhav ◽  
Shashikant P. Vaidya ◽  
...  
1997 ◽  
Vol 17 (2) ◽  
pp. 851-856 ◽  
Author(s):  
B Hu ◽  
E Wright ◽  
L Campbell ◽  
K L Blanchard

The erythropoietin (EPO) gene is one of the best examples of a mammalian gene controlled by oxygen tension. The DNA elements responsible for hypoxia-induced transcription consist of a short region of the proximal promoter and a <50-bp 3' enhancer. The elements act cooperatively to increase the transcriptional initiation rate approximately 100-fold in response to low oxygen tension in Hep3B cells. Two distinct types of transactivating proteins have been demonstrated to bind the response elements in the human EPO enhancer in vitro: one shows hypoxia-inducible DNA binding activity, while the other activity binds DNA under normoxic and hypoxic conditions. We have investigated the DNA-protein interactions on the human EPO enhancer in living tissue culture cells that produce EPO in a regulated fashion (Hep3B) and in cells that do not express EPO under any conditions tested (HeLa). We have identified in vivo DNA-protein interactions on the control elements in the human EPO enhancer by ligation-mediated PCR technology. We show that the putative protein binding sites in the EPO enhancer are occupied in vivo under conditions of normoxia, hypoxia, and cobalt exposure in EPO-producing cells. These sites are not occupied in cells that do not produce EPO. We also provide evidence for a conformational change in the topography of the EPO enhancer in response to hypoxia and cobalt exposure.


2019 ◽  
Vol 43 (2) ◽  
pp. 573-583 ◽  
Author(s):  
Joanna Skiba ◽  
Aleksandra Kowalczyk ◽  
Paweł Stączek ◽  
Tytus Bernaś ◽  
Damian Trzybiński ◽  
...  

Luminescent fac-[Re(CO)3(phen)(aspirin)]: insights into in vitro anticancer activity and confocal microscopy imaging in HeLa cells.


2007 ◽  
Vol 104 (9) ◽  
pp. 3067-3072 ◽  
Author(s):  
S. M. Gustafsdottir ◽  
J. Schlingemann ◽  
A. Rada-Iglesias ◽  
E. Schallmeiner ◽  
M. Kamali-Moghaddam ◽  
...  

2020 ◽  
Vol 10 (4) ◽  
pp. 395-399
Author(s):  
Ajay M. Chowdari ◽  
D. Giles

Background: Ziziphus jujuba mill was commonly used for its anti-inflammatory activity in traditional system of medicine. Objective: The purpose of this study was to examine the isolates of methanolic extract from the fruits of Ziziphus jujuba Mill for its antiulcer, anti-inflammatory, and anticancer activity. Methods: Methanolic extracts of Ziziphus jujuba Mill were subjected to chromatography and eluted using ethyl acetate: methanol mixture and investigated for its structural features using IR, 1H NMR, 13C NMR and mass spectral data. The isolated compound was evaluated for its in vitro COX-2 inhibition studies, cytotoxicity studies, in vivo anti-inflammatory, antiulcer and anticancer activity. Results: The spectral data revealed that the backbone of the isolate was 3-O-α-L-rhamnopyranosyl- (1→6)-β-D-glucopyranosyl jujubogenin-20-O-(2,3,4-O-triacetyl)-α-L-rhamnopyranoside. The isolated compound showed a significant reduction in inflammation and edema. Moderate anticancer activity was also observed for the isolate. Conclusion: It was concluded that the isolated saponin possesses moderate antiulcer, antiinflammatory, and anticancer activity which could help in the identification of leads for the treatment of cancer-related inflammation.


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