Differential sensitivity of various human tumour-derived cell types to apoptosis by organic derivatives of selenium
| Autor: | Raxit J. Jariwalla, Daniel Nakamura, Bhakti Gangapurkar |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Pathology medicine.medical_specialty Cell type Carcinoma Hepatocellular Skin Neoplasms Adolescent Cell Survival Medicine (miscellaneous) chemistry.chemical_element Antineoplastic Agents Apoptosis Breast Neoplasms Biology Adenocarcinoma L-Selenomethionine Neuroblastoma Cell Line Tumor Neoplasms Organoselenium Compounds medicine Carcinoma Animals Anticarcinogenic Agents Humans Cysteine Neuroectodermal Tumors Primitive Peripheral Selenium Compounds Selenomethionine Melanoma Nutrition and Dietetics Liver Neoplasms Epithelial Cells Middle Aged medicine.disease Molecular biology In vitro Selenocysteine chemistry Cell culture Colonic Neoplasms Female Selenium |
| Zdroj: | The British journal of nutrition. 101(2) |
| ISSN: | 1475-2662 |
| Popis: | Selenium is an important trace element with anti-cancer properties. In the present study, the apoptosis-inducing effects of organic selenium derivatives, namely methyl-l-selenocysteine and selenomethionine, were evaluated in vitro on human tumour-derived cell lines from breast, liver, colon, brain, skin and a non-tumorigenic line of epithelial origin. Apoptosis was assessed by cell-death detection immunoassay on cytoplasmic cell lysates. Breast carcinoma cells were highly sensitive to the organic selenium compounds, manifesting apoptosis at concentrations as low as 0·113 μm (0·0205 μg/ml) selenium. By contrast, non-tumorigenic mammary epithelial cells displayed poor sensitivity to selenium, requiring a substantially high concentration of the trace element of 87·9 μm (16·0 μg/ml). The cell lines derived from hepatoma and neuroblastoma showed intermediate sensitivity, with colon carcinoma cells manifesting the lowest sensitivity to the trace element. These results indicate intrinsic differences in the sensitivity of human tumour derivatives to selenium-mediated apoptosis, providing experimental support for the development of organic selenium compounds as anti-neoplastic agents against solid tumours displaying selective apoptotic sensitivity to these compounds. |
| Databáze: | OpenAIRE |
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