Anticancer activity of lanthanum (III) and europium (III) 5-fluorouracil complexes on Caco-2 cell line |
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| Authors: | Nagwa Abo El-Maali Asmaa Y Wahman Aref AM Aly Ahmed Y Nassar Douaa M Sayed |
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| Institution: | 1. Department of Chemistry, Faculty of Science, Assiut University, 71516 Assiut, Egypt;2. Chemistry Department, Faculty of Science, New Valley University, Assiut, Egypt;3. Medical Biochemistry Department, Faculty of Medicine, Assiut University, Assiut, Egypt;4. South Egypt Cancer Institute, Assiut University, Assiut, Egypt |
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| Abstract: | Lanthanide complexes are of increasing importance in cancer diagnosis and therapy. In the present study 1:1 and 1:3 solid complexes of La (III)–5-FU (5-fluorouracil) were prepared and characterized. In solution, the formation of 1:1 La (III) and Eu (III) complexes enabled the enhancement of 5-FU's effectiveness. Binding constants of the 1:1 complexes of both metals were estimated using spectrophotometry and HPLC with fluorescence detection methods. The thermodynamic parameters ΔG ° , ΔH ° and ΔS ° were calculated using differential scanning calorimetry. Evaluation of the cytotoxic activity of the 1:1 La (III)- and Eu (III)–5-FU complexes was performed through two methodologies, trypan blue for cell viability where La (III)- and Eu (III)–5-FU complexes were found to have 52,000 and 80,000 dead cells, respectively, and via flow cytometric analysis to measure the apoptotic values, which were found to be 59.87 and 86.86% respectively. |
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| Keywords: | 5-fluorouracil–lanthanide complexes binding constants flow cytometry HPLC fluorescence La (III) |
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