22 documents found, page 1 of 3
Impact of Conventional and Potential New Metal-Based Drugs on Lipid Metabolism ...
Bispo, Daniela S. C.; Correia, Marlene; Carneiro, Tatiana J.; Martins, Ana S.; Reis, Aliana A. N.; Carvalho, Ana L. M. Batista de; Marques, Maria P. M.This work investigated the mechanisms of action of conventional drugs, cisplatin and oxaliplatin, and the potentially less deleterious drug Pd2Spermine (Spm) and its Pt(II) analog, against osteosarcoma MG-63 cells, using nuclear-magnetic-resonance metabolomics of the cellular lipidome. The Pt(II) chelates induced different responses, namely regarding polyunsaturated-fatty-acids (increased upon cisplatin), sugge...
Pd2Spermine Complex Shows Cancer Selectivity and Efficacy to Inhibit Growth of ...
Vojtek, Martin; Gonçalves-Monteiro, Salomé; Šeminská, Patrícia; Valová, Katarína; Bellón, Loreto; Dias-Pereira, Patrícia; Marques, FranklimPd2Spm is a dinuclear palladium(II)-spermine chelate with promising anticancer properties against triple-negative breast cancer (TNBC), a breast carcinoma subset with poor prognosis and limited treatment options. The present study evaluated the in vitro and in vivo anticancer effects of Pd2Spm compared to the reference metal-based drug cisplatin. Triple-negative breast cancer MDA-MB-231 cells, non-cancerous MCF...
Who's Who? Discrimination of Human Breast Cancer Cell Lines by Raman and FTIR M...
Santos, Inês Pereira dos; Martins, Clara B.; Batista de Carvalho, Luís A. E.; Marques, Maria P. M.; Carvalho, Ana L. M. Batista de(1) Breast cancer is presently the leading cause of death in women worldwide. This study aims at identifying molecular biomarkers of cancer in human breast cancer cells, in order to differentiate highly aggressive triple-negative from non-triple-negative cancers, as well as distinct triple-negative subtypes, which is currently an unmet clinical need paramount for an improved patient care. (2) Raman and FTIR (Fo...
Preclinical Pharmacokinetics and Biodistribution of Anticancer Dinuclear Pallad...
Vojtek, Martin; Gonçalves-Monteiro, Salomé; Pinto, Edgar; Kalivodová, Sára; Almeida, Agostinho; Marques, Maria P. M.; Batista de Carvalho, Ana L. M.Palladium-based compounds are regarded as potential analogs to platinum anticancer drugs with improved properties. The present study assessed the pharmacokinetics and biodistribution of a dinuclear palladium(II)-spermine chelate (Pd2Spm), which has previously been shown to possess promising in vitro activity against several therapy-resistant cancers. Using inductively coupled plasma-mass spectrometry, the kinet...
The impact of moderate heating on human bones: an infrared and neutron spectros...
Marques, Maria P. M.; Batista de Carvalho, L. A. E.; Gonçalves, D.; Cunha, E.; Parker, S. F.This study aims to analyse human bones exposed to low/medium temperatures (200-650°C) under experimentally controlled conditions, both oxidizing and reducing, using complementary optical and neutron vibrational spectroscopy techniques. Clear differences were observed between the aerobically and anaerobically heated bones. The organic constituents disappeared at lower temperatures for the former (ca 300°C), whil...
Profiling of human burned bones: oxidising versus reducing conditions
Marques, Maria P. M.; Gonçalves, D.; Mamede, A. P.; Coutinho, T.; Cunha, Eugénia; Kockelmann, W.; Parker, S. F.; Batista de Carvalho, L. A. E.Complementary optical and neutron-based vibrational spectroscopy techniques (Infrared, Raman and inelastic neutron scattering) were applied to the study of human bones (femur and humerus) burned simultaneously under either aerobic or anaerobic conditions, in a wide range of temperatures (400 to 1000 °C). This is the first INS study of human skeletal remains heated in an oxygen-deprived atmosphere. Clear differe...
Preclinical pharmacokinetics and biodistribution of Anticancer Dinuclear Pallad...
Vojtek, Martin; Gonçalves-Monteiro, Salomé; Pinto, Edgar; Kalivodová, Sára; Almeida, Agostinho; Marques, Maria P. M.; Carvalho, Ana L. M. Batista dePalladium-based compounds are regarded as potential analogs to platinum anticancer drugs with improved properties. The present study assessed the pharmacokinetics and biodistri bution of a dinuclear palladium(II)-spermine chelate (Pd2Spm), which has previously been shown to possess promising in vitro activity against several therapy-resistant cancers. Using inductively coupled plasma-mass spectrometry, the kine...
Preclinical pharmacokinetics and biodistribution of anticancer dinuclear Pallad...
Vojtek, Martin; Gonçalves-Monteiro, Salomé; Pinto, Edgar; Kalivodová, Sára; Almeida, Agostinho; Marques, Maria P. M.; Batista de Carvalho, Ana L. M.Palladium-based compounds are regarded as potential analogs to platinum anticancer drugs with improved properties. The present study assessed the pharmacokinetics and biodistribution of a dinuclear palladium(II)-spermine chelate (Pd2Spm), which has previously been shown to possess promising in vitro activity against several therapy-resistant cancers. Using inductively coupled plasma-mass spectrometry, the kinet...
Metabolic Aspects of Palladium(II) Potential Anti-Cancer Drugs
Carneiro, Tatiana J.; Martins, Ana S.; Marques, Maria P. M.; Gil, Ana M.This mini-review reports on the existing knowledge of the metabolic effects of palladium [Pd(II)] complexes with potential anticancer activity, on cell lines and murine models. Most studies have addressed mononuclear Pd(II) complexes, although increasing interest has been noted in bidentate complexes, as polynuclear structures. In addition, the majority of records have reported in vitro studies on cancer cell l...
A New Look into the Mode of Action of Metal-Based Anticancer Drugs
Marques, Maria P. M.; Batista de Carvalho, Ana L. M.; Mamede, A. P.; Dopplapudi, Asha; Rudić, Svemir; Tyagi, Madhusudan; Garcia Sakai, VictoriaThe mode of action of Pt- and Pd-based anticancer agents (cisplatin and Pd2Spm) was studied by characterising their impact on DNA. Changes in conformation and mobility at the molecular level in hydrated DNA were analysed by quasi-elastic and inelastic neutron scattering techniques (QENS and INS), coupled to Fourier transform infrared (FTIR) and microRaman spectroscopies. Although INS, FTIR and Raman revealed dr...