Unsymmetrically substituted benzimidazolium based Silver(I)-N-Heterocyclic carbene complexes: Synthesis, Characterization and In vitro Anticancer study against Human Breast Cancer and Colon cancer

Publication date: Available online 23 March 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Aqsa Habib, Mansoureh Nazrai Vishkaei, Muhammad Adnan Iqbal, Haq Nawaz Bhatti, M.B. Khadeer Ahmed, A.M.S. Abdul MajidAbstractThe promising biomedical applications of silver complexes stimulated the researchers to test these compounds against cancer. The present research work was designed to achieve this goal. In this work, a series of 5-methyl benzimidazole based N-Heterocyclic carbene ligands and respective silver(I) complexes were synthesized and tested on cancer cell lines to assess their anticancer activity. Unsymmetrically substituted benzimidazole was found unique in its reactivity and generation of a single product during NHC ligand formation was only possible after two successive alkylations with same alkyl halide. The corresponding Ag(I)-NHC adducts were obtained by in situ deprotonation of the NHC ligands. Synthesized compounds were characterized by various physcio-chemical and spectroscopic methods. Single crystal X-ray diffraction study of complex 7 revealed its mononuclear structure. Preliminary in vitro anticancer study of azolium salts and respective Ag(I)-NHC complexes against human breast cancer (MDA-MB-231), colon cancer (HCT-116) and normal endothelial cells (EA.hy926) cells revealed that all the compounds are more cytotoxic to cancer cells than normal cells and the complexes are relatively more potent compared to the corresponding NHC ligands. It was found t...
Source: Journal of Saudi Chemical Society - Category: Chemistry Source Type: research

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Eleonora A. Braga1*†, Marina V. Fridman2†, Vitaly I. Loginov1,3, Alexey A. Dmitriev4 and Sergey G. Morozov1 1Institute of General Pathology and Pathophysiology, Moscow, Russia 2Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia 3Research Center of Medical Genetics, Moscow, Russia 4Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia Clear cell renal cell carcinoma (ccRCC) is the third most common urological cancer, and it has the highest mortality rate. The increasing drug resistance of metastatic ccRCC has resulted in the search f...
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research
Ginevra Doglioni1,2†, Sweta Parik1,2† and Sarah-Maria Fendt1,2* 1Laboratory of Cellular Metabolism and Metabolic Regulation, VIB-KU Leuven Center for Cancer Biology, VIB, Leuven, Belgium 2Laboratory of Cellular Metabolism and Metabolic Regulation, Department of Oncology, KU Leuven and Leuven Cancer Institute, Leuven, Belgium Metastasis formation is the leading cause of death in cancer patients. Thus, understanding and targeting this process is an unmet need. Crucial steps during the establishment of metastases include the (pre)metastatic niche formation. This process relies on the interaction of th...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
In conclusion, we showed hypermethylation of CpGs as a novel mechanism of action for DNMTi agents and identified 638 hypermethylated molecular targets (CpGs) common to decitabine and azacytidine therapy. These novel results suggest that hypermethylation of CpGs should be considered when predicting the DNMTi responses and side effects in cancer patients. Introduction DNA methyltransferase inhibitors (DNMTi) are widely used as chemical tools for hypomethylating the genome, with an aim to understand the role of DNA methylation in multiple processes (e.g., X-chromosome inactivation and DNA imprinting) and as an anti-ca...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Gui-Jiang Wei1,2, Ming-Qing Yuan1, Li-He Jiang1, Yu-Lan Lu3, Chun-Hong Liu3, Hong-Cheng Luo3, Hua-Tuo Huang3, Zong-Quan Qi1* and Ye-Sheng Wei1,2* 1Department of Cell Biology, Medical College of Guangxi University, Nanning, China 2Department of Medical Laboratory, Affiliated Hospital of Guilin Medical University, Guilin, China 3Department of Medical Laboratory, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China miRNAs are small non-coding RNAs modulating gene expression, and variants in miRNA genes are involved in the pathogenesis of ischemic stroke (IS). However, the effect of mi...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Publication date: Available online 18 April 2019Source: Journal of Sport and Health ScienceAuthor(s): Xin Luan, Xiangyang Tian, Haixin Zhang, Rui Huang, Na Li, Peijie Chen, Ru WangAbstractA growing understanding of the benefits of exercise over the past few decades has prompted researchers to take an interest in the possibilities of exercise therapy. Because each sport has its own set of characteristics and physiological complications that tend to appear during exercise training, the effects and underlying mechanisms of exercise remain unclear. Thus, the first step in probing exercise effects on different diseases is the s...
Source: Journal of Sport and Health Science - Category: Sports Medicine Source Type: research
This article is protected by copyright. All rights reserved. PMID: 31002181 [PubMed - as supplied by publisher]
Source: Clinical Genitourinary Cancer - Category: Cancer & Oncology Authors: Tags: Clin Exp Pharmacol Physiol Source Type: research
Publication date: Available online 13 April 2019Source: Materials Science and Engineering: CAuthor(s): Shahnaz Majeed, Farah Hanani Binti Aripin, Nur Syafiqah Binti Shoeb, Mohammed Danish, M.N. Mohamad Ibrahim, Rokiah HashimAbstractThe aim of the current study was to biosynthesize the silver nanoparticles (AgNPs) from the bacterial strain of Bacillus cereus (ATCC 14579) extracellularly. When bacterial extract was challenged with 1 mM silver nitrate (AgNO3) the color of the extract changed into brown confirms the formation of nanoparticles. These nanoparticles were capped with bovine serum albumin (BSA). UV- visible spect...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
This study was carried out in accordance with the recommendations of international guidelines and ethical standards with written informed consent from all subjects. All subjects gave written informed consent in accordance with the Declaration of Helsinki. The protocol was approved by the Institutional Ethics Committee of Kunming General Hospital, China. miRNAs, Plasmids, Transfection, and Irradiation To predict miRNAs with potential binding sites in the 3′UTR of PHLDA2, Targetscan (http://www.targetscan.org/), miRanda (http://www.microrna.org/), and Diana database (http://diana.cslab,ece.nura.gr/) algorithms were u...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Conclusions In this review, we analyzed mechanisms through which mitobolites, a distinct set of mitochondria-generated metabolites, can be released from mitochondria and then act as second messengers that contribute to cellular and organismal aging by regulating longevity-defining processes outside of mitochondria. Our analysis indicates that in eukaryotes across phyla, these second messengers of cellular aging exhibit the following common features: (1) they are produced in mitochondria in response to certain changes in the nutrient, stress, proliferation or age status of the cell; it remains unknown, however, what kind o...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Conclusions MDSC are major players in the immunosuppressive scenario in cancer, thanks to their phenotype heterogeneity and critical interaction with several innate immune cells, thus representing a crucial target in oncology. Here we reviewed the interactions of MDSCs with NK cells. The contribution of key cytokines, chemokines and mediators active in this process have been discussed. We also described the contribution of MDSC on angiogenesis directly or indirectly through interactions with NK and immunosuppressive activities. A parallel of the cancer associated to the decidual counterpart of these cells is discussed, a...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
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