Co-expression of epidermal growth factor-receptor and c-erb B-2 proto-oncogene product in human salivary-gland adenocarcinoma cell line HSG and the implications for HSG cell autocrine growth

1994 ◽  
Vol 39 (7) ◽  
pp. 569-580 ◽  
Author(s):  
S. Kyakumoto ◽  
R. Kurokawa ◽  
M. Hoshino ◽  
M. Ota
1988 ◽  
Vol 116 (3) ◽  
pp. 451-455 ◽  
Author(s):  
R. Kurokawa ◽  
S. Kyakumoto ◽  
M. Ota

ABSTRACT The treatment of a human submandibular gland adenocarcinoma cell line (HSG cell line) for 48 h with triamcinolone acetonide (TA; 1–100 nmol/l) reduced the secretion of epidermal growth factor (EGF) in a closely related manner to a maximum of 66%. The reduction in the level of EGF secreted resulted in the suppression of DNA synthesis in the HSG cells to a similar extent. When the cells were incubated with TA and exogenous human EGF (hEGF), DNA synthesis was 1·7-fold higher than that without added hEGF. The removal of EGF by the addition of hEGF antibody reduced DNA synthesis in HSG cell cultures to the same extent as did TA. These results suggest that the growth inhibition of HSG cells by TA is due to the reduction in the amount of EGF secreted. J. Endocr. (1988) 116, 451–455


Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1559
Author(s):  
Amena Ali ◽  
Abuzer Ali ◽  
Abu Tahir ◽  
Md. Afroz Bakht ◽  
Salahuddin ◽  
...  

Cancer is the world’s second leading cause of death, accounting for nearly 10 million deaths and 19.3 million new cases in 2020. Curcumin analogs are gaining popularity as anticancer agents currently. We reported herein the isolation, molecular engineering, molecular docking, antiproliferative, and anti-epidermal growth factor receptor (anti-EGFR) activities of curcumin analogs. Three curcumin analogs were prepared and docked against the epidermal growth factor receptor (EGFR), revealing efficient binding. Antiproliferative activity against 60 NCI cancer cell lines was assessed using National Cancer Institute (NCI US) protocols. The compound 3b,c demonstrated promising antiproliferative activity in single dose (at 10 µM) as well as five dose (0.01, 0.10, 1.00, 10, and 100 µM). Compound 3c inhibited leukemia cancer panel better than other cancer panels with growth inhibition of 50% (GI50) values ranging from 1.48 to 2.73 µM, and the most promising inhibition with GI50 of 1.25 µM was observed against leukemia cell line SR, while the least inhibition was found against non-small lung cancer cell line NCI-H226 with GI50 value of 7.29 µM. Compounds 3b,c demonstrated superior antiproliferative activity than curcumin and gefitinib. In molecular docking, compound 3c had the most significant interaction with four H-bonds and three π–π stacking, and compound 3c was found to moderately inhibit EGFR. The curcumin analogs discovered in this study have the potential to accelerate the anticancer drug discovery program.


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