scholarly journals Synthesis and anticancer activity of carbosilane metallodendrimers based on arene ruthenium(ii) complexes

2016 ◽  
Vol 45 (16) ◽  
pp. 7049-7066 ◽  
Author(s):  
Marta Maroto-Díaz ◽  
Benelita T. Elie ◽  
Pilar Gómez-Sal ◽  
Jorge Pérez-Serrano ◽  
Rafael Gómez ◽  
...  

Carbosilane-based ruthenium dendrimers have been tested as anticancer agents. These metallodendrimers are active against a number of cisplatin resistant cell lines in the low micromolar range while showing a dendritic effect.

2020 ◽  
Vol 17 (10) ◽  
pp. 772-778
Author(s):  
Abdulrhman Alsayari ◽  
Abdullatif Bin Muhsinah ◽  
Yahya I. Asiri ◽  
Jaber Abdullah Alshehri ◽  
Yahia N. Mabkhot ◽  
...  

The aim of this study was to synthesize and evaluate the biological activity of pyrazole derivatives, in particular, to perform a “greener” one-pot synthesis using a solvent-free method as an alternative strategy for synthesizing hydrazono/diazenyl-pyridine-pyrazole hybrid molecules with potential anticancer activity. Effective treatment for all types of cancers is still a long way in the future due to the severe adverse drug reactions and drug resistance associated with current drugs. Therefore, there is a pressing need to develop safer and more effective anticancer agents. In this context, some hybrid analogues containing the bioactive pharmacophores viz. pyrazole, pyridine, and diazo scaffolds were synthesized by one-pot method. Herein, we describe the expedient synthesis of pyrazoles by a onepot three-component condensation of ethyl acetoacetate/acetylacetone, isoniazid, and arenediazonium salts under solvent-free conditions, and the evaluation of their cytotoxicity using a sulforhodamine B assay on three cancer cell lines. Molecular docking studies employing tyrosine kinase were also carried out to evaluate the binding mode of the pyrazole derivatives under study. 1-(4-Pyridinylcarbonyl)-3- methyl-4-(2-arylhydrazono)-2-pyrazolin-5-ones and [4-(2-aryldiazenyl)-3,5-dimethyl-1H-pyrazol-1- yl]-4-pyridinylmethanones, previously described, were prepared using an improved procedure. Among these ten products, 1-isonicotinoyl-3-methyl-4-[2-(4-nitrophenyl)hydrazono]-2-pyrazolin-5-one (1f) displayed promising anticancer activity against the MCF-7, HepG2 and HCT-116 cell lines, with an IC50 value in the range of 0.2-3.4 μM. In summary, our findings suggest that pyrazoles containing hydrazono/ diazenyl and pyridine pharmacophores constitute promising scaffolds for the development of new anticancer agents.


2018 ◽  
Vol 13 (5) ◽  
pp. 1934578X1801300
Author(s):  
Alleni Suman Kumar ◽  
Rathod Aravind Kumar ◽  
Elala Pravardhan Reddy ◽  
Vavilapalli Satyanarayana ◽  
Jajula Kashanna ◽  
...  

A variety of novel thiazolidine derivatives (2-thioxothiazolidin-4-one and thiazolidine-2, 4-dione derivatives) have been prepared by using 2,4-diphenyl-2 H-chromene-3-carbaldehyde and its derivatives as starting materials. This is the first example of the preparation of thiazolidine derivatives through this novel method. Structure evolution of the resulting thiazolidine derivatives leads to anticancer agents. Our preliminary data for some model compounds on three cancer cell lines (MCF7, A549 and B-16) suggested reasonable anticancer activity against the A549 and B-16 cell lines, with IC50 values of 20.7 and 20.4 μM, respectively. This method is operationally simple and works with a diverse range of substrates.


2020 ◽  
Author(s):  
Md. Nur Alam ◽  
Mohammad Moni ◽  
Jun Yu ◽  
Philip Beale ◽  
Peter Turner ◽  
...  

Abstract Due to similar coordination chemistry of palladium and platinum, a large number of palladium compounds too have been investigated for their anticancer activity. In the present study we describe synthesis, characterization and anticancer activity of palladium complex [Bis(1,8-quinolato)palladium (II)], coded as NH3 against seven different cancer cell lines. NH3 is found to have higher antitumour activity than cisplatin against both parent ovarian A2780 cell line and cisplatin-resistant cell lines. Also, NH3 has the lowest IC50 value against HT-29 colorectal cancer cell line. The higher antitumour activity of NH3 is due to the presence of bulky 8-hydroxy-quinoline ligand thus reducing its reactivity. Proteomic study has identified significantly expressed proteins which have been validated through bioinformatics. NH3 has been found to be less toxic than cisplatin at 2.5 mg/kg and 5 mg/kg dosages on mice models. Binary combinations of NH3 with curcumin and epigallocatechin gallate (EGCG) have demonstrated dose and sequence dependent synergism in ovarian and colorectal cancer models. All of the preclinical studies indicate promising therapeutic potentiality of NH3 [Bis(1,8-quinolato)palladium (II) ] as an anticancer drug.


Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6305
Author(s):  
Abdullah Mohammed Al-Majid ◽  
M. Ali ◽  
Mohammad Shahidul Islam ◽  
Saeed Alshahrani ◽  
Abdullah Saleh Alamary ◽  
...  

A new series of di-spirooxindole analogs, engrafted with oxindole and cyclohexanone moieties, were synthesized. Initially, azomethine ylides were generated via reaction of the substituted isatins 3a–f (isatin, 3a, 6-chloroisatin, 3b, 5-fluoroisatin, 3c, 5-nitroisatin, 3d, 5-methoxyisatin, 3e, and 5-methylisatin, 3f, and (2S)-octahydro-1H-indole-2-carboxylic acid 2, in situ azomethine ylides reacted with the cyclohexanone based-chalcone 1a–f to afford the target di-spirooxindole compounds 4a–n. This one-pot method provided diverse structurally complex molecules, with biologically relevant spirocycles in a good yields. All synthesized di-spirooxindole analogs, engrafted with oxindole and cyclohexanone moieties, were evaluated for their anticancer activity against four cancer cell lines, including prostate PC3, cervical HeLa, and breast (MCF-7, and MDA-MB231) cancer cell lines. The cytotoxicity of these di-spirooxindole analogs was also examined against human fibroblast BJ cell lines, and they appeared to be non-cytotoxic. Compound 4b was identified as the most active member of this series against prostate cancer cell line PC3 (IC50 = 3.7 ± 1.0 µM). The cyclohexanone engrafted di-spirooxindole analogs 4a and 4l (IC50 = 7.1 ± 0.2, and 7.2 ± 0.5 µM, respectively) were active against HeLa cancer cells, whereas NO2 substituted isatin ring and meta-fluoro-substituted (2E,6E)-2,6-dibenzylidenecyclohexanone containing 4i (IC50 = 7.63 ± 0.08 µM) appeared to be a promising agent against the triple negative breast cancer MDA-MB231 cell line. To explore the plausible mechanism of anticancer activity of di-spirooxindole analogs, molecular docking studies were investigated which suggested that spirooxindole analogs potentially inhibit the activity of MDM2.


Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 849 ◽  
Author(s):  
Florence N. Mbaoji ◽  
Steven Behnisch-Cornwell ◽  
Adaobi C. Ezike ◽  
Chukwuemeka S. Nworu ◽  
Patrick J. Bednarski

In western Africa ethnomedicine, Lannea barteri Oliv. (Anacardiaceae) is believed to have activity against gastrointestinal, neurological and endocrine diseases. Previous studies on this plant have revealed antimicrobial, anticholinestrase, anticonvulsant, antioxidant and anti-inflammatory activities. However, the anticancer potential of L. barteri has not been studied to date. The aim of this study was to evaluate the anticancer potential of hot and cold extracts and silica gel column chromatographic fractions of L. barteri leaf and stem bark. The extracts and fractions were tested for anticancer activity by using the crystal violet cell proliferation assay on four adherent human carcinoma cell lines—5637 (bladder), KYSE 70 (oesophagus), SiSo (cervical) and HepG2 (hepatic). The inhibitory concentration (IC50) of fractions IH, 1I, 2E and 2F were: 3.75 ± 1.33, 3.88 ± 2.15, 0.53 ± 0.41, and 0.42 ± 0.45 µg/mL against KYSE 70 and 1.04 ± 0.94, 2.69 ± 1.17, 2.38 ± 3.64, 2.17 ± 1.92 µg/mL against SiSo cell lines respectively. Fraction 2E showed weak apoptotic activity at double the IC50 and some sign of cell cycle arrest in the G2/M phase. Thus, phytoconstituents of L. barteri leaf and stem bark can inhibit the proliferation of cancer cell lines indicating the presence of possible anticancer agents in this plant.


Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 4215-4215
Author(s):  
Antonia Reale ◽  
Tiffany T. Khong ◽  
Sridurga Mithraprabhu ◽  
Ioanna Savvidou ◽  
Malarmathy Ramachandran ◽  
...  

Abstract Introduction/background: Multiple myeloma (MM) remains incurable despite the introduction of novel therapeutic agents. Microarray-based technologies were adopted in our study to determine if a genetic signature associated with resistance to carfilzomib, a second-generation proteasome inhibitor already in use in clinical settings, could be identified. Materials and Methods: 18 genetically heterogeneous human myeloma cell lines (HMCLs) were treated with carfilzomib and a cell viability profile was assessed categorizing the HMCLs as sensitive, intermediate or resistant to carfilzomib. Following categorization gene expression profiling was performed and validated with q-RT-PCR and knockdown assays. Results: 29 genes were differentially regulated between the sensitive and resistant cell lines. Top genes based on intensity values and biological significance were: LOC731314, TSPAN13, APH1B, TSPYL5, COX7B2, PCSK1N, LRRC38, TCIRG1, TOP2A, ADM2, ITM2A, TSPAN13, STOM, UBE2C, SNHG8. Gene ontology (GO) enrichment analysis identified two pathways that were significantly different between the resistant and sensitive HMCLs; pathogenic escherichia coli infection (p=0.002) and lysosome (p=0.006). Eight GO terms were enriched: 4 related to biological processes and 4 related to cellular components. TOP2A, an enzyme that controls and alters the topologic states of DNA during transcription and is involved in cell cycle and proliferation, was identified to be overexpressed in resistant HMCLs. It functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. TOP2A may be used as a predictive factor for patient selection for specific protocols or as independent prognostic marker in solid tumors. TOP2A was also overexpressed in the 'proliferation cluster' associated with greater proliferation rate and poor outcome in newly diagnosed MM patients. Suppression of TOP2A by siRNA in carfilzomib-resistant HMCLs significantly resensitised the cell lines to carfilzomib. Conclusion: Our results suggest that TOP2A is overexpressed in carfilzomib-resistant HMCLs indicating a possible role as a predictive marker of response to carfilzomib in MM. Disclosures No relevant conflicts of interest to declare.


2018 ◽  
Vol 25 (17) ◽  
pp. 1968-1975 ◽  
Author(s):  
Salem Othman ◽  
Maria Kozurkova

Background: The possible use of acridines as anticancer agents was first considered in the 1920´s. Since then, a large number of acridine drugs have been tested as antitumour agents, including compounds containing sulphur on the acridine chromophore. In this review, we will discuss recent studies which have investigated the anticancer activity of this class of acridine derivatives. Methods: We present the results both of our own decade-long research and also of existing research literature into the anticancer activity of acridine derivatives containing sulphur. The evidence of specific tumor-cell killing properties displayed by these compounds suggest the potential of using such molecules as anticancer therapeutics. Results: During the last decade, a number of acridine analogs have been developed by modifying the position and the nature of the substituent on the acridine core. In this paper, we published results on the anticancer activity of acridine derivatives containing sulfur (acridine thioureas, acridine thiazolidine/thiazoidinone, and acridine thiosemicarbazones/ thiosemicarbazides). In cancer chemotherapy, the mechanism of the drugs is complex, although the study of the anticancer activity of acridines has yielded exciting results. Conclusion: In this review we have summarized recent literature on the anticancer activity of acridine derivatives containing sulfur. A considerable amount of published data suggests that these compounds exhibit promising anticancer activity against selected cancer cell lines. The obtained results can be helpful in the development of new pharmaceutical agents.


2022 ◽  
Author(s):  
Yunqiong Gu ◽  
Wen-Ying Shen ◽  
Qi-Yuan Yang ◽  
Zhen-Feng Chen ◽  
Hong Liang

Three ruthenium(III) complexes with pyrazolopyrimidine [Ru(Ln)(H2O)Cl3] (13, n=13) were prepared and characterized. These Ru(III) compounds show strong cytotoxicity against six cancer cell lines and low toxicity to normal human liver...


2018 ◽  
Vol 86 (3) ◽  
pp. 28 ◽  
Author(s):  
Olga Shyyka ◽  
Nazariy Pokhodylo ◽  
Nataliya Finiuk ◽  
Vasyl Matiychuk ◽  
Rostyslav Stoika ◽  
...  

Anticancer screening of several novel thienopyrimidines has been performed. The thienopyrimidine derivatives were synthesized from available starting materials according to the convenient synthetic procedures using a one-pot solvent-free reaction which gave a wide access to thienopyrimidine-derivative production. The synthesized compounds were preselected via molecular docking to be tested for their anticancer activity in NCI 60 cell lines. It was observed that some compounds showed remarkable anticancer activity. It was found that the most active compound among thieno[2,3-d]pyrimidine-4(3H)-ones is 2-(benzylamino)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one, which possesses cytotoxic activity on almost all cancer cell lines with mean growth 51.01%, where the most sensitive was the melanoma cell line MDA-MB-435 with GP (Growth Percent) = −31.02%. The patterns of structure–activity that are important for further optimization of the structure and the creation of more selective and active anticancer agents were proposed.


MedChemComm ◽  
2014 ◽  
Vol 5 (11) ◽  
pp. 1718-1723 ◽  
Author(s):  
Ahmed Kamal ◽  
Vangala Santhosh Reddy ◽  
Karnewar Santosh ◽  
G. Bharath Kumar ◽  
Anver Basha Shaik ◽  
...  

A library of imidazothiadiazole–chalcone conjugates were synthesised and investigated for their cytotoxic activity against various human cancer cell lines. Some of the tested compounds like 7a, 7b, 11a and 11b exhibited promising anticancer activity.


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