scholarly journals Use of a Zebrafish Model to Evaluate Toxicity of Schiff Base Complexes of Copper (II) and Zinc (II) as Possible Antineoplastic Agents

Proceedings ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 11
Author(s):  
Claudia Cardozo ◽  
Andreas Reiber ◽  
Veronica Akle
Keyword(s):  
Schiff Base ◽  
Cancer Cells ◽  
Antineoplastic Agents ◽  
Promising Result ◽  
Organometallic Complexes ◽  
Schiff Base Complexes ◽  
World Health ◽  
Proliferating Cells ◽  
Zebrafish Model ◽  
Toxic Activity

Cancer continues to be one of the leading causes of death, according to the World Health Organization, and chemotherapy is its principal treatment. Organometallic complexes with copper (II) and zinc (II) with Schiff bases as ligand, capable of interacting with cancer cells’ DNA under physiological conditions, may work as good chemotherapy agents because they are less toxic to healthy cells than to cancerous ones. In view of the above, this work focuses on obtaining new Schiff base ligands and their copper and zinc complexes and characterizing them by nuclear magnetic resonance, mass spectrometry, infrared spectroscopy, and other spectroscopic and spectrometric techniques. The objective is to evaluate the toxic activity of the new molecules using the fast proliferating cells of the zebrafish model during development. The toxicity test was performed in zebrafish embryos at 8, 24, 48 and 72 h post fertilization, and a survival and malformation index were registered. Preliminary results show a dose-related effect of the designed Schiff ligands and complexes on the toxicity of the zebrafish embryo and larvae. The survival and malformation index are more severe when exposure occurs during early developmental stages, when cell division is higher due to rapid organization and growth of the new organism. This is a promising result, as the molecules might be cytotoxic to highly proliferating cells, as it occurs in cancer cells. This work represents one of the very few examples that use the zebrafish model to evaluate the cytotoxic activity of Schiff base complexes. Developing the animal model to test the effect of Schiff ligands and their complexes is an important first step to assess the effectiveness of new molecules as antineoplastic agents.

Potential application of two cobalt (III) Schiff base complexes in cancer chemotherapy: Leads from a study using breast and lung cancer cells

2021 ◽  
pp. 105201
Author(s):  
Balakrishnan Gowdhami ◽  
Subramanian Ambika ◽  
Balakrishnan Karthiyayini ◽  
Venkatesan Ramya ◽  
Balamuthu Kadalmani ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Schiff Base ◽  
Cancer Cells ◽  
Cancer Chemotherapy ◽  
Potential Application ◽  
Schiff Base Complexes ◽  
Lung Cancer Cells

A new class of quadruplex DNA-binding nickel Schiff base complexes

2020 ◽  
Vol 49 (15) ◽  
pp. 4843-4860 ◽  
Author(s):  
Son Q. T. Pham ◽  
Nawal Assadawi ◽  
Jadon Wells ◽  
Reece A. Sophocleous ◽  
Kimberley J. Davis ◽  
...  
Keyword(s):  
Schiff Base ◽  
Dna Binding ◽  
Cancer Cells ◽  
Schiff Base Complex ◽  
Schiff Base Complexes ◽  
Selective Binding ◽  
Quadruplex Dna ◽  
Base Complex ◽  
New Class ◽  
Binding Behaviour

A new nickel Schiff base complex shows selective binding behaviour towards quadruplex DNA and cytotoxicity against cancer cells.

scholarly journals SYNTHESIS, SPECTRAL CHARACTERIZATION OF SCHIFF BASE COMPLEXES BASED ON PYRIMIDINE MOIETY WITH MOLECULAR DOCKING WITH BIOMOLECULES

2018 ◽  
Vol 11 (10) ◽  
pp. 93
Author(s):  
Mohanambal D ◽  
Arulantony S
Keyword(s):  
Schiff Base ◽  
Molecular Docking ◽  
Cancer Cells ◽  
Elemental Analysis ◽  
Condensation Reaction ◽  
Spectral Characteristics ◽  
Schiff Base Complexes ◽  
Human Epidermis ◽  
Schiff Base Ligands ◽  
13C Nuclear Magnetic Resonance

Objective: Aim of this study is to synthesize new bidentate complexes of type MX2. nH2O with 4 amino antipyrine and ethyl 4-methyl-2-oxo-6- phenylhexahydropyrimidine-5-carboxylate (DHPM) and to characterize their properties, namely elemental analysis, conductivity measurements, and spectral characteristics and to establish the binding between the Schiff base ligands and complexes with human epidermis cancer cells (Hep-2) through molecular docking.Method: A new bidentate complexes were synthesized by condensation reaction of MX2·nH2O (M = Cu (II), Zn (II), Co (II)) with 4-aminoantipyrine (A) and DHPM in methanol under atmospheric pressure.Results: All the compounds have been characterized by elemental analysis, conductance measurements, magnetic moments, and spectroscopy techniques such as ultraviolet–visible, infrared (IR), 1H and 13C nuclear magnetic resonance, and electron spin resonance (ESR). The IR showed that nature of functional group present in the ligand (Lp) acts as neutral bidentate through the azomethane nitrogen atom and carbonyl oxygen moiety and its complexes formation. The ESR spectral data of copper complex provided information about their structure on the basis of Hamiltonian parameters and degree of covalency. The antimicrobial (Escherichia coli, Salmonella typhi, Bacillus subtilis, and aureus) and antifungal (Candida and Aspergillus niger) activities of the complexes were tested against various microorganism by disc diffusion method.Conclusion: The antimicrobial activity indicates that the metal complexes are more active than the ligand. Molecular docking was used to predict the binding between the Schiff base ligands and complexes with human epidermis cancer cells (Hep-2).

scholarly journals Two‐Photon Detection of Organotin Schiff Base Complexes in Cancer Cells

2020 ◽  
Vol 5 (5) ◽  
pp. 1623-1627
Author(s):  
Jessica C. Berrones‐Reyes ◽  
Blanca M. Muñoz‐Flores ◽  
Ashanti Concepción Uscanga‐Palomeque ◽  
Rosa Santillán ◽  
Casiano Del Angel‐Mosqueda ◽  
...  
Keyword(s):  
Schiff Base ◽  
Cancer Cells ◽  
Schiff Base Complexes ◽  
Photon Detection ◽  
Two Photon

scholarly journals Synthesis, Characterization, Anticancer, and Antioxidant Studies of Ru(III) Complexes of Monobasic Tridentate Schiff Bases

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Ikechukwu P. Ejidike ◽  
Peter A. Ajibade
Keyword(s):  
Schiff Base ◽  
Cancer Cells ◽  
Metal Ion ◽  
Schiff Base Complexes ◽  
Azomethine Nitrogen ◽  
Spectral Studies ◽  
Melanoma Cancer ◽  
Sulforhodamine B Assay ◽  
Mcf 7

Mononuclear Ru(III) complexes of the type [Ru(LL)Cl2(H2O)] (LL = monobasic tridentate Schiff base anion: (1Z)-N′-(2-{(E)-[1-(2,4-dihydroxyphenyl)ethylidene]amino}ethyl)-N-phenylethanimidamide [DAE], 4-[(1E)-N-{2-[(Z)-(4-hydroxy-3-methoxybenzylidene)amino]ethyl}ethanimidoyl]benzene-1,3-diol [HME], 4-[(1E)-N-{2-[(Z)-(3,4-dimethoxybenzylidene)amino]ethyl}ethanimidoyl]benzene-1,3-diol [MBE], andN-(2-{(E)-[1-(2,4-dihydroxyphenyl)ethylidene]amino}ethyl)benzenecarboximidoyl chloride [DEE]) were synthesized and characterized using the microanalytical, conductivity measurements, electronic spectra, and FTIR spectroscopy. IR spectral studies confirmed that the ligands act as tridentate chelate coordinating the metal ion through the azomethine nitrogen and phenolic oxygen atom. An octahedral geometry has been proposed for all Ru(III)-Schiff base complexes.In vitroanticancer studies of the synthesized complexes against renal cancer cells (TK-10), melanoma cancer cells (UACC-62), and breast cancer cells (MCF-7) was investigated using the Sulforhodamine B assay. [Ru(DAE)Cl2(H2O)] showed the highest activity with IC50valves of3.57±1.09,6.44±0.38, and9.06±1.18 μM against MCF-7, UACC-62, and TK-10, respectively, order of activity being TK-10 < UACC-62 < MCF-7. The antioxidant activity by DPPH and ABTS inhibition assay was also examined. Scavenging ability of the complexes on DPPH radical can be ranked in the following order: [Ru(DEE)Cl2(H2O)] > [Ru(HME)Cl2(H2O)] > [Ru(DAE)Cl2(H2O)] > [Ru(MBE)Cl2(H2O)].

The Mechanism of Lunasin's Effect on the Growth of Breast Cancer Cells Induced by Obesity-induced Inflammation

Impact ◽  
2020 ◽  
Vol 2020 (7) ◽  
pp. 16-18
Author(s):  
Chia-Chien Hsieh
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Inflammatory Responses ◽  
Specific Area ◽  
Tumour Microenvironment ◽  
Associate Professor ◽  
World Health ◽  
Cancer Development ◽  
Breast Cancer Development

It has long been established that diet and nutrition can have a significant impact on health and even help reduce the prevalence of chronic diseases. It makes sense that what we put into our bodies would have some bearing on how our bodies function. Indeed, the World Health Organization developed guidelines focusing on nutrient intake, with a view to reducing the global burden of disease related to obesity, diabetes, cardiovascular disease, several forms of cancer, osteoporosis and dental disease. One exciting area of research, that is little understood, is the potential efficacy of lunasin – a peptide found in soy, legume and some cereal grains – against certain types of cancer. Lunasin has shown potential in the prevention of cancers. It is able to do this by suppressing the proliferation and migration of cancer cells, and anti-inflammation in this tumour environment. A specific area of study within this is lunasin's ability to reduce obesity associated breast cancer development. Associate Professor Chia-Chien Hsieh, a researcher based at the Programs of Nutrition Science, School of Life Science, National Taiwan Normal University, current work is focused on the mechanism of lunasin's effect on the growth of breast cancer cells induced by obesity-associated inflammation. Her goal is to investigate the obesity-related breast cancer chemoprevention of lunasin, which might retard inflammatory responses around tumour microenvironment and even break the crosstalk of macrophages, adipocyte, and breast cancer cells. The aim being to provide potential strategies for ameliorating obesity-related ER(+) or ER(-) breast cancer development.

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

2008 ◽  
Vol 19 (5) ◽  
pp. 749-755 ◽  
Author(s):  
Mahmut Ulusoy ◽  
Hasan Karabıyık ◽  
Rafet Kılınçarslan ◽  
Muhittin Aygün ◽  
Bekir Çetinkaya ◽  
...  
Keyword(s):  
Schiff Base ◽  
Structural Study ◽  
Schiff Base Complexes ◽  
X Ray

Functional substituted Cu(II) Schiff base complexes, syntheses, X-ray and theoretical characterizations, and investigations of their polyphenol oxidase- and peroxidase-like activities

2021 ◽  
Vol 1232 ◽  
pp. 129975
Author(s):  
Murat Tuna ◽  
Salih Zeki Yildiz ◽  
Gulnur Arabaci ◽  
Zeynep Denli ◽  
Nagihan Çaylak Delibaş ◽  
...  
Keyword(s):  
Schiff Base ◽  
Polyphenol Oxidase ◽  
Schiff Base Complexes ◽  
X Ray
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