1-(4-Methoxyphenyl)-3-(3-phenoxyphenyl) prop-2-en-1-one: A Diphenyl Chalcone Derivative with Potent Antitumor Activity Via Up-Regulation of p21 Gene

Mapping Intimacies ◽

10.31487/j.ijcst.2021.02.04 ◽

2021 ◽

pp. 1-8

Author(s):

Litty Joseph ◽

Lakshmi PS ◽

Litty Joseph

Keyword(s):

Antitumor Activity ◽

Cytotoxic Activity ◽

Solid Tumor ◽

Tumor Model ◽

Pcr Analysis ◽

Anticancer Activities ◽

Abnormal Cells ◽

Solid Tumor Model

Background and Aim: Cancer is a disease of complex aetiology and is characterised by uncontrolled growth of abnormal cells. It is a major worldwide health problem. Many natural and synthetic chalcone or their derivatives showed anticancer activities. The aim of the present study is to evaluate the anticancer activity of novel chalcone derivatives and also to establish possible mechanism of action. Materials and Methods: A series of chalcones 3-(3-phenoxyphenyl)-1-phenylprop-2-en-1-one (2a); 1-(4-chlorophenyl)-3-(3-phenoxyphenyl) prop-2-en-1-one (2b); 1-(4-fluorophenyl)-3-(3-phenoxyphenyl) prop-2-en-1-one (2c); 1-(4-Nitro-phenyl)-3-(3-phenoxy-phenyl)prop-2-en-1-one (2d); 1-(4-methoxyphenyl)-3-(3-phenoxyphenyl) prop-2-en-1-one(2e) were evaluated for the cytotoxic activity both in vitro and in vivo. The in vivo antitumor activity of these compounds was estimated on Daltons Ascites Lymphoma induced solid tumor model. The effect of promising compound was further analysed by flow cytometer and RT- PCR analysis. Results and Conclusion: 1-(4-methoxyphenyl)-3-(3-phenoxyphenyl) prop-2-en-1-one and 1-(4- chlorophenyl)-3-(3-phenoxyphenyl) prop-2-en-1-one was showed in vitro cytotoxic activity, DNA damage and antiproliferative activity. DLA induced solid tumor model suggested that 1-(4-methoxyphenyl)-3-(3- phenoxy phenyl) prop-2-en-1-one significantly reduced the tumor volume, increase the percentage tumor inhibition and reverse the haematological parameters. Flow cytometry analysis concluded that the compound induces cell cycle arrest at G0/G1 phase due to the over expression of p21. 1-(4-methoxyphenyl)-3-(3- phenoxy phenyl) prop-2-en-1-one may be a potential agent for cancer treatment.

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Baicalein exerts antitumor effect in cervical cancer

Materials Express ◽

10.1166/mex.2021.2042 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1347-1353

Author(s):

Yuhui Luo ◽

Mingyan Wang ◽

Li Zhang ◽

Weining Jia ◽

Erzhe Wengu ◽

...

Keyword(s):

Cervical Cancer ◽

Solid Tumor ◽

Antitumor Effect ◽

Tumor Volume ◽

Tumor Model ◽

Ascites Tumor ◽

Tumor Tissues ◽

Solid Tumor Model

The work verified that baicalein (BCN) inhibited the appearance and progress of cervical cancer in vitro and in vivo. MTT and CCK-8 methods were used to detect the toxicity of BCN to C33A cells and the number of C33A cells, respectively. For in vivo assays, a solid tumor model of cervical cancer and ascites tumor model was successfully established. The body weight, tumor volume and weight, survival time, and ascites volume were recorded. The anti-tumor ratio and increasing rate of life span were computed. H&E staining was performed to examine the liver tissues, kidney tissues, and tumor tissues. BCN inhibits the proliferation of human cervical cancer cell line C33A and induces apoptosis. The results from in vivo assays showed that BCN suppressed tumor growth and progression with decreased tumor volume and weight in a solid tumor model. BCN significantly induced cell apoptosis in solid tumor tissues. BCN also reduced ascites volume, prolonged survival time, and increased life extension rate in the ascites tumor model. These findings indicated that BCN exerted an antitumor effect against cervical cancer both in vitro and in vivo. According to the results, BCN might act as an important antitumor agent against cervical cancer.

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589 Enhancement of the anti-tumor effects of CD47 blockade in solid tumors by combination with targeted radioimmunotherapy

Journal for ImmunoTherapy of Cancer ◽

10.1136/jitc-2021-sitc2021.589 ◽

2021 ◽

Vol 9 (Suppl 3) ◽

pp. A619-A619

Author(s):

Sagarika Pachhal ◽

Emily Greer ◽

Jesse Hwang ◽

Qing Liang ◽

Mary Chen ◽

...

Keyword(s):

Flow Cytometry ◽

Tumor Cell ◽

Solid Tumors ◽

Solid Tumor ◽

Tumor Model ◽

Blocking Antibody ◽

First Time ◽

Solid Tumor Model

BackgroundOne mechanism that tumors use to escape immunosurveillance is the overexpression of CD47, which inhibits the macrophage mediated phagocytosis pathway. Although blockade of the CD47-SIRPα axis is a promising approach to enhance tumor targeted phagocytosis, anti-CD47 monotherapies have not shown meaningful responses in clinical studies of solid tumors. Combination cancer therapies aim to increase the probability of response in settings of resistance by combining drugs with different mechanisms of action. Antibody radioconjugates (ARCs) specifically target and deliver therapeutic radiation directly to cancer cells. We rationalized that the immunogenic and cytotoxic properties of ARCs will upregulate calreticulin (CRT), a pro-phagocytic signal, thereby synergizing with CD47 blocking therapies to enhance phagocytosis and antitumor activity. Here for the first time, we demonstrate the combination benefit of a HER2 specific targeting ARC and a CD47 blocking antibody to enhance therapeutic efficacy in preclinical solid tumor models.MethodsThe anti-HER2 antibody trastuzumab was conjugated with p-SCN-DOTA and radiolabeled with Ac-225 or Lu-177. The biological activity of both radioconjugates was evaluated using human recombinant HER2 and receptor positive tumor cell lines. The cytotoxic effect of radioconjugates and the ability to upregulate CRT was evaluated using XTT assay and flow cytometry, respectively, in a panel of HER2 expressing cells. To evaluate the synergy of anti-HER2 ARC and CD47 antibody combination in vitro, a flow cytometry macrophage phagocytosis assay was developed. We further evaluated the antitumor synergy in vivo between anti-HER2 ARC and CD47 antibody in human HER2 positive tumor xenograft mouse model.ResultsThe anti-HER2 ARCs have similar binding properties to native antibody and demonstrate specific cytotoxicity. Importantly, we observe ARC-mediated CRT upregulation in HER2 expressing cells. Furthermore, the combination of HER2 targeting ARC and CD47 blocking antibody enhances in vitro macrophage mediated tumor cell phagocytosis compared to each agent alone. Remarkably, the in vivo anti-HER2 ARC and CD47 antibody combination shows enhanced therapeutic effect with reduced toxicity and improved survival benefit in a human preclinical solid tumor model.ConclusionsHere for the first time, we demonstrate enhanced therapeutic efficacy between an anti-HER2 ARC and CD47 blocking antibody combination in a preclinical solid tumor model. The finding suggests that ARC mediated upregulation of CRT potentiates the pro-phagocytic signal and synergizes with the anti-CD47 mode of action thereby enhancing antitumor immune response. This combination mechanism provides a very promising strategy to improve therapeutic responses in patients harboring solid tumors and warrants further preclinical evaluation.Ethics ApprovalAll animal experiments were approved by IACUC.

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„IN VITRO“ AND „IN VIVO“ ANTITUMOR ACTIVITY OF PLATINUM(II) COMPLEXES WITH MALONIC ACID ON BREAST AND COLORECTAL CARCINOMA CELL LINES

10.46793/iccbi21.293f ◽

2021 ◽

Author(s):

Andjela Franich ◽

◽

Milica Dimitrijević Stojanović ◽

Snežana Rajković ◽

Marina Jovanović ◽

...

Keyword(s):

Antitumor Activity ◽

Colorectal Carcinoma ◽

Cell Lines ◽

Tumor Model ◽

Carcinoma Cells ◽

Spectroscopic Techniques ◽

Murine Cell Line ◽

In Vivo Antitumor Activity

Four Pt(II) complexes of the general formula [Pt(L)(5,6-epoxy-1,10-phen)], where L is anion of malonic (mal, Pt1), 2-methylmalonic (Me-mal, Pt2), 2,2-dimethylmalonic (Me2-mal, Pt3) or 1,1- cyclobutanedicarboxylic (CBDCA, Pt4) acid while 5,6-epoxy-1,10-phen is bidentately coordinated 5,6-epoxy-5,6-dihydro-1,10-phenanthroline were synthesized and characterized by elemental microanalysis, IR, UV-Vis and NMR (1H and 13C) spectroscopic techniques. In vitro anticancer activity of novel platinum(II) complexes have been investigated on human and murine cancer cell lines, as well as normal murine cell line by MTT assay. The obtained results indicate that studied platinum(II) complexes exhibited strong cytotoxic activity against murine breast carcinoma cells (4T1), human (HCT116) and murine (CT26) colorectal carcinoma cells. Complex Pt3 display stronger selectivity toward carcinoma cells in comparison to other tested platinum(II) complexes exhibiting beneficial antitumor activity mainly via the induction of apoptosis, as well as inhibition of cell proliferation and migration. Further study showed that Pt3 complex also carry significant in vivo antitumor activity in orthotopical 4T1 tumor model without detected liver, kidney, lung, and heart toxicity. All results imply that these novel platinum(II) complexes have a good anti-tumor effect on breast and colorectal cancer in vivo and in vitro and the affinity to become possible candidates for treatment in anticancer therapy.

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In vitro and in vivo evaluation of antitumor activity of methanolic extract of Argyreia nervosa leaves on Ehrlich ascites carcinoma

Bangladesh Journal of Pharmacology ◽

10.3329/bjp.v10i2.22334 ◽

2015 ◽

Vol 10 (2) ◽

pp. 399

Author(s):

Bhawna Sharma ◽

Isha Dhamija ◽

Sandeep Kumar ◽

Hema Chaudhary

Keyword(s):

Antitumor Activity ◽

Solid Tumor ◽

Methanolic Extract ◽

Ehrlich Ascites Carcinoma ◽

Ehrlich Ascites ◽

Wide Range ◽

Antioxidant Parameters ◽

Argyreia Nervosa

The herb of importance like Argyreia nervosa has shown wide range of pharmacological activities. Its methanolic extract of A. nervosa has been explored against Ehrlich ascites carcinoma (EAC) induced liquid and solid tumor in mice. Liquid and solid tumors were induced by intraperitoneal and subcutaneous transplantation of EAC cells in Balb/C mice. Significant and dose dependant results are observed when the mice are sacrificed on 15th day for estimation of tumor proliferation, hematological, biochemical and hepatic antioxidant parameters. Mean survival time (days) was increased to 36.5 from 20.5 extract treated mice. The extract also showed a decrease (p<0.001) in body weight and percentage reduction in tumor volume respectively when it was evaluated in solid tumor induced mice for a period of 30 days. From the result it was concluded that the extract has as a potent antitumor activity and that is comparable to 5-fluorouracil.

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lncRNA MEG3 Suppresses the Tumorigenesis of Hemangioma by Sponging miR-494 and Regulating PTEN/ PI3K/AKT Pathway

Cellular Physiology and Biochemistry ◽

10.1159/000496040 ◽

2018 ◽

Vol 51 (6) ◽

pp. 2872-2886 ◽

Cited By ~ 15

Author(s):

Yuxin Dai ◽

Yongkun Wan ◽

Mingke Qiu ◽

Shuqing Wang ◽

Chang Pan ◽

...

Keyword(s):

Negative Correlation ◽

Colony Formation ◽

Normal Skin ◽

Ectopic Expression ◽

Tumor Model ◽

Bioinformatic Analysis ◽

Akt Pathway ◽

Pcr Analysis

Background/Aims: Dysregulation of long noncoding RNAs (lncRNAs) is associated with the proliferation and metastasis in a variety of cancers, of which lncRNA maternally expressed gene 3 (MEG3) has been indicated as a tumor suppressor in multiple malignancies. However, the underlying mechanisms by which MEG3 contributes to human hemangiomas (HAs) remain undetermined. Methods: qRT-PCR analysis was performed to examine the expression levels of MEG3 and VEGF in proliferating or involuting phase HAs. MTT, colony formation assay, flow cytometry analysis and a subcutaneous xenograft tumor model were conducted to assess the effects of MEG3 on the HAs tumorigenesis. The interaction between MEG3 and miRNAs or their downstream pathways was evidenced by bioinformatic analysis, luciferase report assays, RNA immunoprecipitation (RIP) assay. and Western blot analysis. Results: The expression of MEG3 was substantially decreased and had a negative correlation with VEGF expression in proliferating phase HAs, as compared with the involuting phase HAs and normal skin tissues. Ectopic expression of MEG3 suppressed cell proliferation, colony formation and induced cycle arrest in vitro and in vivo, followed by the downregulation of VEGF and cyclinD1, but knockdown of MEG3 reversed these effects. Furthermore, MEG3 was verified to act as a sponge of miR-494 in HAs cells, and miR-494 counteracted MEG3-caused anti-proliferative effects by regulating PTEN/PI3K/AKT pathway, and exhibited the negative correlation with MEG3 and PTEN expression in proliferating phase HAs. Conclusion: Our findings suggested that lncRNA MEG3 inhibited HAs tumorigenesis by sponging miR-494 and regulating PTEN/PI3K/AKT pathway.

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Circular RNA_CNST Promotes the Tumorigenesis of Osteosarcoma Cells by Sponging miR-421

Cell Transplantation ◽

10.1177/0963689720926147 ◽

2020 ◽

Vol 29 ◽

pp. 096368972092614

Author(s):

Ji-Hai Wang ◽

Xue-Jian Wu ◽

Yong-Zhuang Duan ◽

Feng Li

Keyword(s):

Colony Formation ◽

Specific Binding ◽

Tumor Model ◽

Gene Expression Omnibus ◽

Pcr Analysis ◽

Circular Rnas ◽

Xenograft Tumor ◽

Potential Biomarker

Circular RNAs (circRNAs) act crucial roles in the progression of multiple malignancies including osteosarcoma (OS). But, the underlying mechanisms by which hsa_circ_0017311 (circCNST) contributes to the tumorigenesis of OS remain poorly understood. Our present study aimed to explore the role and mechanisms of circCNST in OS tumorigenesis. The differentially expressed circRNAs were identified by the Gene Expression Omnibus database. The association of circCNST with clinicopathological features and prognosis in patients with OS was analyzed by RNA fluorescence in situ hybridization (FISH) and quantitative real-time polymerase chain reaction (PCR) analysis. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), colony formation assays, and a xenograft tumor model were conducted to assess the role of circCNST in OS cells in vitro and in vivo. CircCNST-specific binding with miR-421 was confirmed by FISH, luciferase gene report, and RNA immunoprecipitation assays. As a result, we found that the expression levels of circCNST were dramatically increased in OS tissues and cell lines as compared with the adjacent normal tissues, and it was associated with tumor size and poor survival in OS patients. Knockdown of circCNST repressed cell viability, colony formation, and xenograft tumor growth, while restored expression of circCNST reversed these effects. Furthermore, circCNST was colocalized with miR-421 in the cytoplasm and acted as a sponge of miR-421, which attenuated circCNST-induced proliferation-promoting effects in OS cells by targeting SLC25A3. In conclusion, our findings demonstrate that circCNST promotes the tumorigenesis of OS cells by sponging miR-421, and provides a potential biomarker for patients with OS.

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Anticancer and Anti-Inflammatory Activities of a Standardized Dichloromethane Extract fromPiper umbellatumL. Leaves

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2015/948737 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 15

Author(s):

Leilane Hespporte Iwamoto ◽

Débora Barbosa Vendramini-Costa ◽

Paula Araújo Monteiro ◽

Ana Lúcia Tasca Gois Ruiz ◽

Ilza Maria de Oliveira Sousa ◽

...

Keyword(s):

Solid Tumor ◽

Anticancer Agents ◽

Antiproliferative Activity ◽

Tumor Model ◽

Oral Route ◽

Paw Edema ◽

Anti Inflammatory ◽

Cancer And Inflammation

Despite the advances in anticancer drug discovery field, the worldwide cancer incidence is remarkable, highlighting the need for new therapies focusing on both cancer cell and its microenvironment. The tumor microenvironment offers multiple targets for cancer therapy, including inflammation. Nowadays, almost 75% of the anticancer agents used in chemotherapy are derived from natural products, and plants are an important source of new promising therapies. Continuing our research onPiper umbellatumspecies, here we describe the anticancer (in vitroantiproliferative activity andin vivoEhrlich solid tumor model) and anti-inflammatory (carrageenan-induced paw edema and peritonitis models) activities of a standardized dichloromethane extract (SDE) fromP. umbellatumleaves, containing 23.9% of 4-nerolidylcatechol. SDE showedin vitroandin vivoantiproliferative activity, reducing Ehrlich solid tumor growth by 38.7 and 52.2% when doses of 200 and 400 mg/kg, respectively, were administered daily by oral route. Daily treatments did not produce signals of toxicity. SDE also reduced paw edema and leukocyte migration on carrageenan-induced inflammation models, suggesting that the anticancer activity of SDE fromPiper umbellatumleaves could involve antiproliferative and anti-inflammatory effects. These findings highlightP. umbellatumas a source of compounds against cancer and inflammation.

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Penetration and Silencing Activity of VEGF Dicer Substrate siRNA Vectorized by Chitosan Nanoparticles in Monolayer Culture and a Solid Tumor ModelIn Vitrofor Potential Application in Tumor Therapy

Journal of Nanomaterials ◽

10.1155/2016/7201204 ◽

2016 ◽

Vol 2016 ◽

pp. 1-16 ◽

Cited By ~ 3

Author(s):

Maria Abdul Ghafoor Raja ◽

Haliza Katas ◽

Zariyantey Abd Hamid

Keyword(s):

Solid Tumor ◽

Monolayer Culture ◽

Tumor Therapy ◽

Chitosan Nanoparticles ◽

Tumor Model ◽

Tumor Growth Inhibition ◽

Knock Down ◽

Human Solid Tumors ◽

Solid Tumor Model

Penetration and distribution of drug through the avascular regions of human solid tumors after extravasation are crucial concerns for antitumor efficacy. To address this issue, anin vitrosolid tumor model of multicellular layers (MCLs) of human colorectal cancer cells (DLD-1) was established. In an attempt to deliver Dicer substrate small interfering RNA (DsiRNA), chitosan (CS) nanoparticles have been developed for targeting vascular endothelial growth factor (VEGF) gene for tumor growth inhibition. The DsiRNA-CS nanoparticles prepared by ionic gelation method had provided maximal protection of DsiRNA in full human serum up to 48 h incubation. RT-PCR studies revealed significant concentration- and time-dependent knock-down ofVEGFmRNA and its product due to uniform penetration of DsiRNA-CS nanoparticles throughout MCLs. Taken together, this study also demonstrated that DsiRNA-CS nanoparticles could effectively knock downVEGFgene as therapeutic target in monolayer culture or in solid tumor model for potential treatment of human colorectal carcinoma.

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