gold nanoparticle and mean inactivation dose of human intestinal colon cancer ht-29 cells

Authors

zahra arab-bafrani disorder metabolic research center, faculty of medicine, golestan university of medical sciences, gorgan, ir iran; department of medical physics, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

alihossein saberi department of medical genetics, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of medical genetics, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9161133488, fax: +98-613332036

mohammad javad tahmasebi birgani department of medical physics, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

daryoush shahbazi-gahrouei department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, ir iran

abstract

conclusions due to the significant reduction in the mean inactivation dose of colon cancer cells in the presence of gold nanoparticles, it seems that gnps are suitable options to achieve a new approach in order to improve radiotherapy efficiency without increasing the prescribed radiation dose. results cell survival in the presence of gnps was more than 90% and the maximum uptake of gnps was observed at 60 µm of gold nanoparticles. in contrast, in the presence of gnps combined with radiation, cell survival and mid value significantly decreased, so that the radio sensitization enhancement was 1.4. materials and methods naked-gnps with 50 nm diameters were incubated with ht-29 cells. the cytotoxicity and uptake of these particles on ht-29 cells were assessed. after determining the optimum gnps concentration, the cells were incubated with gold nanoparticle for 24 hours. the change in the mid value as well as the radio sensitization enhancement under irradiation with 9 mv x-ray beams in the presence of gnps were evaluated by multiple (3-(4, 5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2h-tetrazolium)mts assay. background mean inactivation dose is a useful radiobiological parameter for the comparison of human cell survival curves. objectives given the importance and accuracy of these parameters, in the present study, the radio sensitivity enhancement of colon cancer (ht-29) cells in the presence of gold nanoparticles (gnps) were studied using the mean inactivation dose (mid).

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Journal title:
jundishapur journal of natural pharmaceutical products

جلد ۱۰، شماره ۴، صفحات ۰-۰

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