41 research outputs found
Synthesis and Biological Evaluation of Phenanthrenes as Cytotoxic Agents with Pharmacophore Modeling and ChemGPS-NP Prediction as Topo II Inhibitors
In a structure-activity relationship (SAR) study, 3-methoxy-1,4-phenanthrenequinones, calanquinone A (6a), denbinobin (6b), 5-OAc-calanquinone A (7a) and 5-OAc-denbinobin (7b), have significantly promising cytotoxicity against various human cancer cell lines (IC50 0.08–1.66 µg/mL). Moreover, we also established a superior pharmacophore model for cytotoxicity (r = 0.931) containing three hydrogen bond acceptors (HBA1, HBA2 and HBA3) and one hydrophobic feature (HYD) against MCF-7 breast cancer cell line. The pharmacophore model indicates that HBA3 is an essential feature for the oxygen atom of 5-OH in 6a–b and for the carbonyl group of 5-OCOCH3 in 7a–b, important for their cytotoxic properties. The SAR for moderately active 5a–b (5-OCH3), and highly active 6a–b and 7a–b, are also elaborated in a spatial aspect model. Further rational design and synthesis of new cytotoxic phenanthrene analogs can be implemented via this model. Additionally, employing a ChemGPS-NP based model for cytotoxicity mode of action (MOA) provides support for a preliminary classification of compounds 6a–b as topoisomerase II inhibitors
Validity and Reliability of the IPAQ (Chinese Version - Short Form)
Session: C-27 – Free Communication/Poster: Assessment of Physical Activit
Preliminary Evidence To Suggest Accumulating 8,000 Steps/Day May Meet Physical Activity Promotion Guideline
Agreement Between 5 Measures of Light, Moderate, and Vigorous Levels of Habitual Physical Activity
Section: B-24: Free Communication/Poster – Physical Activity Assessmen
The Efficacy of Treatment with Triamcinolone Acetonide in Calcinosis Cutis Following Extravasation of Calcium Gluconate: A Preliminary Study
Therapeutic levels of FVIII following a single peripheral vein administration of rAAV vector encoding a novel human factor VIII variant
Therapeutic levels of FVIII following a single peripheral vein administration of rAAV vector encoding a novel human factor VIII variant
Bureaucratic corruption and profit tax evasion
Corruption, Firms, Tax evasion, D 73, H 25, H 26,