scholarly journals THE CYTOTOXIC EFFECT OF CHELIDONIUM MAJUS IN VITRO

2015 ◽  
Vol 8 (2) ◽  
Author(s):  
Vladimíra Tomečková ◽  
Veronika Tkáčová ◽  
Peter Urban ◽  
Marek Stupák
Keyword(s):  
Tumor Cells ◽  
Hela Cells ◽  
Antiproliferative Activity ◽  
Cytotoxic Effect ◽  
Lymphoblastic Leukemia ◽  
Mammary Adenocarcinoma ◽  
Chelidonium Majus ◽  
Mcf 7 ◽  
Lipophilic Substances

The effect of aqueous and ether Chelidonium majus haulms extract on cervical HeLa tumor cells, mammary adenocarcinoma MCF 7 tumor cells and acute lymphoblastic leukemia CEM tumor cells in vitro have been studied. The purpose of this research was to compare the effect of aqueous and ether Chelidonium majus haulms extract on selected tumor cells. Colorimetric MTT assay have been used for the study of the antiproliferative effect of aqueous and ether haulms extract of Chelidonium majus on cell viability in vitro. The results of the experiments have shown the cytotoxic effect of the aqueous and the ether Chelidonium majus haulms extract on the individual tumor cells. The aqueous Chelidonium majus haulms extract was the most effective on CEM cells, it was less effective on MCF 7 cells and it was the least effective on HeLa cells. The ether haulms extract of Chelidonium majus was the most effective at all of studied concentrations on CEM cells and MCF 7 cells in comparison with HeLa cells, where it was significantly effective only at the highest concentration. Aqueous and ether haulms extract of Chelidonium majus tested in vitro indicated their cytotoxic activity. Both haulms extract of Chelidonium majus were more efficient on CEM cells. It is assumed that higher antiproliferative activity of ether haulms extract of Chelidonium majus is the result of higher antiproliferative activity of lipophilic substances. The lipophilic substances pass through membrane and bind to various proteins and change their biological activity.

scholarly journals Corrigendum to: Screening of Ipomoea tuba Leaf Extract for Identification of Bioactive Compounds and Evaluation of Its in vitro Antiproliferative Activity Against MCF-7 and HeLa Cells (Published: Food Technol. Biotechnol. 58 (1) 71-75 (2020) https://doi.org/10.17113/ftb.58.01.20.6351)

2020 ◽  
Vol 58 (3) ◽  
pp. 356-356
Author(s):  
Thirupati Chinna Venkateswarulu ◽  
Gaddam Eswaraiah ◽  
Srirrama Krupanidhi ◽  
Karlapudi Abraham Peele ◽  
Indira Mikkili ◽  
...  
Keyword(s):  
Cell Lines ◽  
Bioactive Compounds ◽  
Hela Cells ◽  
Antiproliferative Activity ◽  
Leaf Extract ◽  
Mcf 7

The authors requested the replacement of Fig. 1. Morphology of MCF-7 cells after the treatment with the extract of Ipomoea tuba leaf: a) untreated MCF-7 cell lines, and b-g) treated with different concentrations (5, 10, 25, 50, 75 and 100 μg/mL respectively) of the leaf extract The change includes the replacemend of images 1c-1g.

scholarly journals Synthesis and Evaluation of the Antitumor Activity of Novel 1-(4-Substituted phenyl)-2-ethyl Imidazole Apoptosis Inducers In Vitro

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4293
Author(s):  
Zhen-Wang Li ◽  
Chun-Yan Zhong ◽  
Xiao-Ran Wang ◽  
Shi-Nian Li ◽  
Chun-Yuan Pan ◽  
...  
Keyword(s):  
Antitumor Activity ◽  
Tumor Cells ◽  
Antiproliferative Activity ◽  
Antitumor Agent ◽  
Positive Control ◽  
Selectivity Index ◽  
Time Dependent ◽  
Potential Candidate ◽  
Dependent Manner

Novel imidazole derivatives were designed, prepared, and evaluated in vitro for antitumor activity. The majority of the tested derivatives showed improved antiproliferative activity compared to the positive control drugs 5-FU and MTX. Among them, compound 4f exhibited outstanding antiproliferative activity against three cancer cell lines and was considerably more potent than both 5-FU and MTX. In particular, the selectivity index indicated that the tolerance of normal L-02 cells to 4f was 23–46-fold higher than that of tumor cells. This selectivity was significantly higher than that exhibited by the positive control drugs. Furthermore, compound 4f induced cell apoptosis by increasing the protein expression levels of Bax and decreasing those of Bcl-2 in a time-dependent manner. Therefore, 4f could be a potential candidate for the development of a novel antitumor agent.

12 Development of an in vitro assay to assess bispecific T cell engager using T cells from CD3e humanized mice

2020 ◽  
Vol 8 (Suppl 3) ◽  
pp. A12-A12
Author(s):  
Jun Zhou ◽  
Shuang Zhu ◽  
Hongjuan Zhang ◽  
Lei Zheng ◽  
Mingfa Zang ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Tumor Cells ◽  
Lymphoblastic Leukemia ◽  
Humanized Mice ◽  
Activation Markers ◽  
In Vivo Models ◽  
Vitro Assay ◽  
Bite Antibody

BackgroundBispecific T cell engagers (BiTE) is a fast-growing class of immunotherapies. They are bispecific antibody that bind to T cell-surface protein (for example, CD3e) and a specific tumor associate antigen (TAA) on tumor cells, by which to redirect T cells against tumor cells in a MHC-independent manner. A successful example in the clinical is Blinatumomab, a BiTE antibody against CD3/CD19 approved in 2014 to treat acute lymphoblastic leukemia. Currently, many CD3-based BiTE are in clinical trials, including BCMAxCD3, Her2xCD3, CEAxCD3, and PSMAxCD3. To evaluate the efficacy of BiTE in vitro, human peripheral blood monocyte cells (hPBMC) are commonly being used as a source of T cells to co-culture with tumor cells. The disadvantage of using hPBMC is donor-to-donor variability and the availability of the original donor if a study needs to be repeated.MethodsTo overcome this, we proposed to replace hPBMC with T cells from human CD3e (hCD3) genetically engineered mouse models mice (GEMM) for in in vitro coculture assay. T cells were isolated from hCD3 GEMM mice using negative selection mouse T cell isolation kit. Conventional tumor cell lines or luciferase-engineered patient-derived-xenograft (PDX)-derived organoids (PDXO) expressing specific antigens are co-cultured with hCD3 T cells in 96-well plates in the presence of BiTE antibody.ResultsWe measured the killing of tumor cells using either flow cytometry or luciferase activity as readouts. To analyze tumor-reactivity of T cells to cancer cell line or organoids, IFN-gamma in the culture medium was measured and activation markers on T cells was assessed.ConclusionsOur data showed the feasibility of using humanized mice T cells as a replacement for hPBMCs to assess BiTE antibody in vitro. We are further validating the application of murine hCD3 T cells for in vivo models to test bispecific T cell engagers.

scholarly journals Model Amphipathic Peptide Coupled with Tacrine to Improve Its Antiproliferative Activity

2020 ◽  
Vol 22 (1) ◽  
pp. 242
Author(s):  
Sara Silva ◽  
Cláudia Alves ◽  
Diana Duarte ◽  
Ana Costa ◽  
Bruno Sarmento ◽  
...  
Keyword(s):  
Antiproliferative Activity ◽  
Solid Phase ◽  
Solid Phase Peptide Synthesis ◽  
Drug Repurposing ◽  
Parent Drug ◽  
Ache Inhibitor ◽  
Amphipathic Peptide ◽  
Reference Drug ◽  
Mcf 7

Drug repurposing and drug combination are two strategies that have been widely used to overcome the traditional development of new anticancer drugs. Several FDA-approved drugs for other indications have been tested and have demonstrated beneficial anticancer effects. In this connection, our research group recently reported that Tacrine, used to treat Alzheimer’s Disease, inhibits the growth of breast cancer MCF-7 cells both alone and in combination with a reference drug. In this view, we have now coupled Tacrine with the model amphipathic cell-penetrating peptide (CPP) MAP, to ascertain whether coupling of the CPP might enhance the drug’s antiproliferative properties. To this end, we synthesized MAP through solid-phase peptide synthesis, coupled it with Tacrine, and made a comparative evaluation of the parent drug, peptide, and the conjugate regarding their permeability across the blood-brain barrier (BBB), ability to inhibit acetylcholinesterase (AChE) in vitro, and antiproliferative activity on cancer cells. Both MAP and its Tacrine conjugate were highly toxic to MCF-7 and SH-SY5Y cells. In turn, BBB-permeability studies were inconclusive, and conjugation to the CPP led to a considerable loss of Tacrine function as an AChE inhibitor. Nonetheless, this work reinforces the potential of repurposing Tacrine for cancer and enhances the antiproliferative activity of this drug through its conjugation to a CPP.

Novel Difolate Targeting Nano-Level Ultrasound Contrast Agent for Therapy of Breast Cancer Tumor Cells

2021 ◽  
Vol 13 (7) ◽  
pp. 1295-1303
Author(s):  
Guangheng Liu ◽  
Xiangfeng Yang ◽  
Qiming Niu ◽  
Wenkui Sun
Keyword(s):  
Breast Cancer ◽  
Contrast Agent ◽  
Tumor Cells ◽  
Folate Receptor ◽  
Ultrasound Contrast Agent ◽  
Hydroxyl Group ◽  
Binding Ability ◽  
Ultrasound Contrast ◽  
Mcf 7

ABSTRACTA new type of difolate targeting nano-level ultrasound contrast agent ((folate molecule, FOL)2-TUAs) was prepared, so as to investigate its targeted binding effect with human breast cancer mammary carcinoma cells (MCF-7) in vitro. L-2-aminoadipic acid (L-2-AD) as a branch unit was inserted at the hydroxyl end of distearoyl phosphatidylethanolamine (DISP)-PEG2000-COOH to construct a tree structure. At this time, the free hydroxyl group in the distearoyl phosphatidylethanolamine (DISP)-PEG2000-COOH structure modified the FOL with the help of N-Hydroxysuccinimide/N,N'-dicyclohexylcarbodiimide (NHS/DCC). Each 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000] (DISP-PEG2000) connected two FOLs to generate difolate targeted nanomaterials. Nano laser particle size (PS) and Zeta potential analyzer (ZPA) were applied to analyze the physical characteristics of the material such as PS and dispersion, and the enhanced development effect in vitro was detected by the ultrasonic diagnostic instrument. Besides, the targeted binding ability of the contrast agent based on this material to folate receptor (FR) overexpressing MCF-7 cells was analyzed by flow cytometry (FCM) and fluorescence microscope. In the experiment, hydrogen-1 nuclear magnetic resonance (1H NMR) demonstrated that (FOL)2-TUAs was successfully synthesized. The surface of this material was round and uniformly distributed without aggregation. According to the relative number of FOL molecules, non-targeted nano-agent (U-TUA), monofolate targeted nano-agent (FOL-TUA), and difolate targeted nano-agent ((FOL)2-TUA) were obtained. The in vitro imaging showed that different materials exhibited enhanced imaging effects in ultrasonic diagnostic equipment. FCM and fluorescence microscopy both indicated that the difolate TUA could achieve a good binding to MCF-7 cells. Most of the nano-agents were attached to the cell membrane, surrounded by red fluorophore, namely increasing the FOL content of DISP-PEG2000 chain could enhance the targeted binding ability of tumor cells.

Ajugalide-B (ATMA) is an anoikis-inducing agent from Ajuga taiwanensis with antiproliferative activity against tumor cells in vitro

2012 ◽  
Vol 80 ◽  
pp. 64-69 ◽  
Author(s):  
Chun-Tang Chiou ◽  
Yao-Haur Kuo ◽  
Yu-Yi Chan ◽  
Shin-Hun Juang ◽  
Hsiu-Hui Chan ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Antiproliferative Activity

scholarly journals Mitotic arrest affects clustering of tumor cells

2021 ◽  
Author(s):  
Julia Bonnet ◽  
Lise Rigal ◽  
Odile Mondesert ◽  
Renaud Morin ◽  
Gaelle Corsaut ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Cancer Cell ◽  
Cell Aggregation ◽  
Metastatic Potential ◽  
Mitotic Arrest ◽  
Chemotherapeutic Agents ◽  
The Impact ◽  
Mcf 7

Abstract Background Cancer cell aggregation is a key process involved in the formation of tumor cell clusters. It has recently been shown that clusters of circulating tumor cells (CTCs) have an increased metastatic potential compared to isolated circulating tumor cells. Several widely used chemotherapeutic agents that target the cytoskeleton microtubules and cause cell cycle arrest at mitosis have been reported to modulate CTC number or the size of CTC clusters. Results In this study, we investigated in vitro the impact of mitotic arrest on the ability of breast tumor cells to form clusters. By using live imaging and quantitative image analysis, we found that MCF-7 cancer cell aggregation is compromised upon incubation with paclitaxel or vinorelbine, two chemotherapeutic drugs that target microtubules. In line with these results, we observed that MCF-7 breast cancer cells experimentally synchronized and blocked in metaphase aggregated poorly and formed loose clusters. To monitor clustering at the single-cell scale, we next developed and validated an in vitro assay based on live video-microscopy and custom-designed micro-devices. The study of cluster formation from MCF-7 cells that express the fluorescent marker LifeAct-mCherry using this new assay allowed showing that substrate anchorage-independent clustering of MCF-7 cells was associated with the formation of actin-dependent highly dynamic cell protrusions. Metaphase-synchronized and blocked cells did not display such protrusions, and formed very loose clusters that failed to compact. Conclusions Altogether, our results suggest that mitotic arrest induced by microtubule-targeting anticancer drugs prevents cancer cell clustering and therefore, could reduce the metastatic potential of circulating tumor cells.

scholarly journals In vitro cytotoxic study for partially purified resveratrol extracted from grape skin fruit Vitis vinifera

2009 ◽  
Vol 3 (2) ◽  
pp. 40-47
Author(s):  
Zainab Y. Mohammed ◽  
Essam F. Al-Jumaily ◽  
Nahi Y. Yaseen
Keyword(s):  
Cell Line ◽  
Cell Lines ◽  
Cytotoxic Effect ◽  
Inhibitory Effect ◽  
Mammary Adenocarcinoma ◽  
Dependent Manner ◽  
Grape Skin ◽  
Grape Fruit ◽  
Glass Column

The partial purified resveratrol was obtained from the skin of black grape fruit cultivated in Iraq using 80% ethanolic solution, then an acid hydrolysis with 10% HCl solution for (10–30) min at 60Cº was carried out. The aglycone moiety was taken with an organic solvent (chloroform), then using an open glass column packed with silica gelG 60 as a stationary phase and a mobile phase of; benzene: methanol: actic acid (20:4:1). The study utilized an in vitro evaluation for the cytotoxic effect of the partially purified resveratrol on some cell lines including, the murine mammary adenocarcinoma (Ahmed –Mohammed –Nahi–2003 -AMN -3) cell line; the human laryngeal carcinoma (Hep -2) cell line and the Rat Embryo Fibroblast (REF) cell line at different concentrations and different exposure time of treatment. The partial purified resveratrol extract concentrations ranging (7.8–4000) µg/ml in a two fold serial dilutions were used to treat the three types of cell lines for 48 and 72 hours intervals. AMN-3 cell lines showed highest sensitivity toward the cytotoxic effect of the paritial purified resveratrol than other cell lines after 48 hours in a dose dependent manner. While Hep-2 cell line showed novel behavior, the lowest concentration of cell treatment gave the most significant (P< 0.01) inhibitory effect. Only the highest concentration gave significant inhibitory effect (P< 0.01) with the transformed Ref cell line.

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