Naphthylchalcones induce apoptosis and caspase activation in a leukemia cell line: The relationship between mitochondrial damage, oxidative stress, and cell death
作者:Evelyn Winter、Louise Domeneghini Chiaradia、Clarissa A.S. de Cordova、Ricardo José Nunes、Rosendo Augusto Yunes、Tânia Beatriz Creczynski-Pasa
DOI:10.1016/j.bmc.2010.09.025
日期:2010.11
In this study, we investigated the effects of 24 chalcone derivatives from 2-naphthylacetophenone toward a lymphoblastic leukemia cell line (L1210). Three compounds, called R7, R13, and R15, presented concentration- and time-dependent cytotoxicity and induced cellular death by apoptosis via mitochondrial injury and oxidative stress. The effects of these compounds appear to occur through different mechanisms because R13 and R7 induced a greater disturbance of mitochondrial potential, and all compounds induced disturbances of cellular ATP content and increased caspase-3 activity before cellular death. These compounds also interfered with antioxidant enzymes activities and GSH content through different mechanisms. (C) 2010 Elsevier Ltd. All rights reserved.
Biochemical evaluation of a series of synthetic chalcone and hydrazide derivatives as novel inhibitors of cruzain from Trypanosoma cruzi
作者:Deise M. Borchhardt、Alessandra Mascarello、Louise Domeneghini Chiaradia、Ricardo J. Nunes、Glaucius Oliva、Rosendo A. Yunes、Adriano D. Andricopulo
DOI:10.1590/s0103-50532010000100021
日期:——
Chagas' disease, a parasitic infection widely distributed throughout Latin America, is a major public health problem with devastating consequences in terms of human morbidity and mortality. The enzyme cruzain is the major cysteine protease from Trypanosoma cruzi, the etiologic agent of American trypanosomiasis or Chagas' disease, and has been selected as an attractive target for the development of novel trypanocidal drugs. In the present work, we describe the synthesis and inhibitory effects of a series of thirty-three chalcone and seven hydrazide derivatives against the enzyme cruzain from T. cruzi. Most of the compounds showed promising in vitro inhibition (IC50 values in the range of 20-60 mu M), which suggest the potential of these compounds as lead candidates for further development. Twelve compounds have not been reported before, and four of them (7, 13, 16 e 18) are among the most potent inhibitors of the series.
Chalcones: As Potent α-amylase Enzyme Inhibitors; Synthesis, In Vitro, and In Silico Studies
作者:Mahboob Ali、Momin Khan、Khair Zaman、Abdul Wadood、Maryam Iqbal、Aftab Alam、Sana Shah、Ashfaq Ur Rehman、Muhammad Yousaf、Rafaila Rafique、Khalid Mohammed Khan
DOI:10.2174/1573406416666200611103039
日期:2021.9.10
EI-MS, HRESI-MS, 1H-, and 13C-NMR. Results: Sixteen syntheticchalcones were evaluated for in vitro porcine pancreatic α-amylase inhibition. All the chalcones demonstrated good inhibitory activities in the range of IC50 = 1.25 ± 1.05 to 2.40 ± 0.09 μM as compared to the standard commercial drug acarbose (IC50 = 1.34 ± 0.3 μM). Conclusion: Chalcone derivatives (1-16) were synthesized, characterized,