1
|
Islam MS, Rahi MS, Jahangir CA, Jerin I, Hasan MM, Hoque KMF, Reza MA. Deciphering the molecular pathways of apoptosis using purified fractions from leaf extract of Basella alba through studying the regulation of apoptosis related genes. Mol Biol Rep 2021; 48:85-96. [PMID: 33454909 DOI: 10.1007/s11033-021-06136-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/02/2021] [Indexed: 11/26/2022]
Abstract
Apoptosis plays a pivotal role in the exclusion of abnormal cells without any ruin of surrounding healthy cells. Generally, it occurs through an orderly and autonomously process which is controlled by proper function of various genes. Therefore, the current experiments detect the expression level/pattern of those genes to confirm the involvement of extrinsic and intrinsic pathway using Basella alba leaf (BAL). Several fractions after gel filtration chromatography of BAL extract have been pooled to evaluates its apoptosis induction potentiality on Ehrlich's Ascites Carcinoma (EAC) cells through conducting a number of bio-assays such as cell growth inhibition assay, fluorescence and optical microscopy, DNA fragmentation assay and gene expression analysis etc. The pooled fractions of BAL showed 12-56% inhibitory effect on EAC cell line at the concentration range of 25-400 μg/ml that was determined by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay. They also exhibited excellent cell growth inhibition at in vivo and in vitro condition when treated with 10, 20 and 40 mg/kg day. After administration of six consequent days, significant morphological features of apoptosis were observed in EAC cells under both fluorescence and optical microscope which was further supported by DNA fragmentation assay. The polymerase chain reaction amplification of bax, bcl-2 (B-cell lymphoma 2), p53, tumor necrosis factor-α, Fas, NF-kβ (Nuclear factor-Kappa-B), PARP-1 (Poly (ADP-ribose) polymerase), Cyt-c cas-8, cas-9 and cas-3 revealed that the experimental sample able to induce apoptosis in both extrinsic and intrinsic pathways through altering the gene expression. The current findings suggest that sample from BAL occupy wonderful competence to induce cell apoptosis and become an ideal resource for cancer treatment.
Collapse
Affiliation(s)
- Md Shihabul Islam
- Molecular Biology and Protein Science Laboratory, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Sifat Rahi
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Chowdhury Arif Jahangir
- Cancer Biology and Therapeutics Laboratory, School of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Israt Jerin
- Molecular Biology and Protein Science Laboratory, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Mahmudul Hasan
- Molecular Biology and Protein Science Laboratory, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Kazi Md Faisal Hoque
- Molecular Biology and Protein Science Laboratory, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Abu Reza
- Molecular Biology and Protein Science Laboratory, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| |
Collapse
|
2
|
El-Ashmawy NE, Salem ML, Khedr EG, El-Zamarany EA, Ibrahim AO. Dual-targeted therapeutic strategy combining CSC-DC-based vaccine and cisplatin overcomes chemo-resistance in experimental mice model. Clin Transl Oncol 2020; 22:1155-1165. [PMID: 31748959 DOI: 10.1007/s12094-019-02242-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/31/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND PURPOSE Emerging evidence suggests that one of the main reasons of chemotherapy treatment failure is the development of multi-drug resistance (MDR) associated with cancer stem cells (CSCs). Our aim is to identify a therapeutic strategy based on MDR-reversing agents. MATERIALS AND METHODS CSC-enriched Ehrlich carcinoma (EC) cell cultures were prepared by drug-resistant selection method using different concentrations of cisplatin (CIS). Cell cultures following drug exposure were analyzed by flow cytometry for CSC surface markers CD44+/CD24-. We isolated murine bone marrow-derived dendritic cells (DCs) and then used them to prepare CSC-DC vaccine by pulsation with CSC-enriched lysate. DCs were examined by flow cytometry for phenotypic markers. Solid Ehrlich carcinoma bearing mice were injected with the CSC-DC vaccine in conjunction with repeated low doses of CIS. Tumor growth inhibition was evaluated and tumor tissues were excised and analyzed by real-time PCR to determine the relative gene expression levels of MDR and Bcl-2. Histopathological features of tumor tissues excised were examined. RESULTS AND CONCLUSION Co-treatment with CSC-DC and CIS resulted in a significant tumor growth inhibition. Furthermore, the greatest response of downregulation of MDR and Bcl-2 relative gene expression were achieved in the same group. In parallel, the histopathological observations demonstrated enhanced apoptosis and absence of mitotic figures in tumor tissues of the co-treatment group. Dual targeting of resistant cancer cells using CSC-DC vaccine along with cisplatin represents a promising therapeutic strategy that could suppress tumor growth, circumvent MDR, and increase the efficacy of conventional chemotherapies.
Collapse
Affiliation(s)
- N E El-Ashmawy
- Biochemistry Department, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - M L Salem
- Zoology Department, Faculty of Science, Tanta University, Tanta, Egypt
- Center of Excellence in Cancer Research, Tanta University, Tanta, Egypt
| | - E G Khedr
- Biochemistry Department, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - E A El-Zamarany
- Clinical Pathology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - A O Ibrahim
- Biochemistry Department, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| |
Collapse
|
3
|
Badr El-Din NK, Areida SK, Ahmed KO, Ghoneum M. Arabinoxylan rice bran (MGN-3/Biobran) enhances radiotherapy in animals bearing Ehrlich ascites carcinoma†. J Radiat Res 2019; 60:747-758. [PMID: 31504707 PMCID: PMC6873627 DOI: 10.1093/jrr/rrz055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/22/2019] [Indexed: 05/08/2023]
Abstract
This study examines the ability of arabinoxylan rice bran (MGN-3/Biobran) to enhance the anti-cancer effects of fractionated X-ray irradiation of Ehrlich solid tumor-bearing mice. Swiss albino mice bearing tumors were exposed to the following: (i) Biobran treatment (40 mg/kg/day, intraperitoneal injections) beginning on day 11 post-tumor cell inoculation until day 30; (ii) ionizing radiation (Rad) 2 Gy at three consecutive doses on days 12, 14 and 16; or (iii) Biobran + Rad. Final tumor weight was suppressed by 46% for Biobran, 31% for Rad and 57% for the combined treatment (Biobran + Rad) relative to control untreated mice. Biobran and Rad also arrested the hypodiploid cells in the sub-G1-phase, signifying apoptosis by +102% and +85%, respectively, while the combined treatment induced apoptosis by +123%, with similar results in the degree of DNA fragmentation. Furthermore, Biobran + Rad upregulated the relative gene expression and protein level of p53 and Bax in tumor cells, down-regulated Bcl-2 expression, and increased the Bax/Bcl-2 ratio and caspase-3 activity, with the combined treatment greater than for either treatment alone. Additionally, the combined treatment modulated the decrease in body weight, the increase in liver and spleen weight, and the elevation of liver enzymes aspartate aminotransferase, alanine aminotransferase and gamma-glutamyl transferase to be within normal values. We conclude that Biobran enhances radiation therapy-induced tumor regression by potentiating apoptosis and minimizing toxicities related to radiation therapy, suggesting that Biobran may be useful in human cancer patients undergoing radiotherapy and warranting clinical trials.
Collapse
Affiliation(s)
| | - Said K Areida
- Department of Zoology, Faculty of Science, University of Mansoura, Mansoura, Egypt
| | | | - Mamdooh Ghoneum
- Department of Surgery, Drew University of Medicine and Science, Los Angeles, CA, USA
| |
Collapse
|
4
|
Corso CR, Stipp MC, Adami ER, da Silva LM, Mariott M, de Andrade SF, de Souza Ramos EA, Klassen G, Beltrame OC, Queiroz-Telles JE, de Oliveira CS, Stefanello MÉA, Acco A. Salvia lachnostachys Benth has antitumor and chemopreventive effects against solid Ehrlich carcinoma. Mol Biol Rep 2019; 46:4827-4841. [PMID: 31270760 DOI: 10.1007/s11033-019-04931-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 06/20/2019] [Indexed: 12/19/2022]
Abstract
Salvia lachnostachys is an herbaceous plant with anti-inflammatory, analgesic and cytotoxic properties. This study investigated the antitumor effect of an ethanolic extract of Salvia lachnostachys leaves (EES) in a solid Ehrlich carcinoma model. Ehrlich cells were inoculated subcutaneously in the right pelvic member (2 × 106 cells) in female Swiss mice. The animals were treated with vehicle (10 mL kg-1, p.o.), EES (30 and 100 mg kg-1, p.o.), or methotrexate (2.5 mg kg-1, i.p.) for 21 days (early treatment) or 14 days (late treatment) after tumor inoculation, or 10 days before tumor inoculation and continued for 21 days after tumor inoculation (chemopreventive treatment). The acute toxicity test was performed according OECD guidelines Late treatment with EES had no antitumor effect. Early treatment with 100 mg kg-1 EES prevented tumor development, increased tumor necrosis factor-α (TNF-α) levels and decreased tumor superoxide dismutase (SOD) activity, interleukin-10 (IL-10) levels and Cyclin D1 expression, and tumor cell necrosis was observed. Chemopreventive treatment with EES for 10 and 31 days prevented tumor development in the same manner. EES treatment for 31 days decreased hepatic and tumor SOD activity, tumor IL-10 levels and Cyclin D1 expression, and increased tumor reduced glutathione, N-acetylglucosaminidase, reactive oxygen species, lipid peroxidation, TNF-α levels and Nrf2 expression. No toxicity was observed in the acute toxicity assay. In conclusion, EES had an antitumor effect by inhibiting Cyclin D1 expression and increasing inflammation with early and chemopreventive treatment. Modulation of the antioxidant system also contribute for the antitumor effects of EES.
Collapse
Affiliation(s)
- Claudia Rita Corso
- Pharmacology Department, Biological Sciences Sector, Federal University of Parana, PO Box 19031, Curitiba, PR, 81531-980, Brazil
| | - Maria Carolina Stipp
- Pharmacology Department, Biological Sciences Sector, Federal University of Parana, PO Box 19031, Curitiba, PR, 81531-980, Brazil
| | - Eliana Rezende Adami
- Pharmacology Department, Biological Sciences Sector, Federal University of Parana, PO Box 19031, Curitiba, PR, 81531-980, Brazil
| | - Luisa Mota da Silva
- Postgraduate Program in Pharmaceutical Sciences, University Vale of Itajaí, Itajaí, SC, Brazil
| | - Marihá Mariott
- Postgraduate Program in Pharmaceutical Sciences, University Vale of Itajaí, Itajaí, SC, Brazil
| | | | | | - Giseli Klassen
- Basic Pathology Department, Federal University of Parana, Curitiba, PR, Brazil
| | | | | | | | | | - Alexandra Acco
- Pharmacology Department, Biological Sciences Sector, Federal University of Parana, PO Box 19031, Curitiba, PR, 81531-980, Brazil.
| |
Collapse
|
5
|
Ghoneum M, El-Din NKB, Mahmoud AZ, Tolentino L, Pan D, Hassan TA. Dietary baker's yeast sensitizes Ehrlich mammary adenocarcinoma to paclitaxel in mice bearing tumor. Oncol Rep 2019; 41:3155-3166. [PMID: 31002367 PMCID: PMC6489018 DOI: 10.3892/or.2019.7107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 12/13/2018] [Indexed: 01/14/2023] Open
Abstract
Baker's yeast, Saccharomyces cerevisiae, has been shown to sensitize a variety of breast cancer cell (BCC) lines to paclitaxel chemotherapy in vitro. The present study evaluated the ability of S. cerevisiae to sensitize BCCs to paclitaxel in animals bearing Ehrlich ascites carcinoma (EAC). Mice bearing EAC were intratumorally injected with dead S. cerevisiae (1x107 cells/ml) in the presence or absence of low- and high-dose paclitaxel [paclitaxel-L, 2 mg/kg body weight (BW) and paclitaxel-H, 10 mg/kg BW, respectively]. At 30 days post tumor inoculation, co-treatment with yeast plus paclitaxel-L showed improvements over paclitaxel-H alone, as measured by tumor weight (-64 vs. -53%), DNA damage (+79 vs. +62%), tumor cell apoptosis (+217 vs. +177%), cell proliferation (-56 vs. -42%) and Ki-67 marker (+95 vs. +40%). Histopathology and ultra-structural examinations showed that yeast plus paclitaxel-L enhanced apoptosis in EAC more than paclitaxel-H alone and caused comparable tumor necrosis. We conclude that baker's yeast may be used with low-dose chemotherapy to achieve the same potency as high-dose chemotherapy in mice bearing EAC. This suggests that baker's yeast may be an anticancer adjuvant and may have clinical implications for the treatment of breast cancer.
Collapse
Affiliation(s)
- Mamdooh Ghoneum
- Department of Surgery, Drew University of Medicine and Science, Los Angeles, CA 90059, USA
| | - Nariman K. Badr El-Din
- Department of Zoology, Faculty of Science, University of Mansoura, Mansoura 35516, Egypt
| | - Ashraf Z. Mahmoud
- Urology and Nephrology Center, University of Mansoura, Mansoura 35516, Egypt
| | - Lucilene Tolentino
- Department of Pathology, Drew University of Medicine and Science, Los Angeles, CA 90059, USA
| | - Deyu Pan
- Department of Preventive and Social Medicine, Drew University of Medicine and Science, Los Angeles, CA 90059, USA
| | - Tahia Ali Hassan
- Department of Zoology, Faculty of Science, University of Mansoura, Mansoura 35516, Egypt
| |
Collapse
|
6
|
Alam AHMK, Hossain ASMS, Khan MA, Kabir SR, Reza MA, Rahman MM, Islam MS, Rahman MAA, Rashid M, Sadik MG. The Antioxidative Fraction of White Mulberry Induces Apoptosis through Regulation of p53 and NFκB in EAC Cells. PLoS One 2016; 11:e0167536. [PMID: 27936037 PMCID: PMC5147903 DOI: 10.1371/journal.pone.0167536] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/15/2016] [Indexed: 02/07/2023] Open
Abstract
In this study, the antioxidative fraction of white mulberry (Morus alba) was found to have an apotogenic effect on Ehrlich's ascites carcinoma cell-induced mice (EAC mice) that correlate with upregulated p53 and downregulated NFκB signaling. The antioxidant activities and polyphenolic contents of various mulberry fractions were evaluated by spectrophotometry and the ethyl acetate fraction (EAF) was selected for further analysis. Strikingly, the EAF caused 70.20% tumor growth inhibition with S-phase cell cycle arrest, normalized blood parameters including red/white blood cell counts and suppressed the tumor weight of EAC mice compared with untreated controls. Fluorescence microscopy analysis of EAF-treated EAC cells revealed DNA fragmentation, cell shrinkage, and plasma membrane blebbing. These characteristic morphological features of apoptosis influenced us to further investigate pro- and anti-apoptotic signals in EAF-treated EAC mice. Interestingly, apoptosis correlated with the upregulation of p53 and its target genes PARP-1 and Bax, and also with the down-regulation of NFκB and its target genes Bcl-2 and Bcl-xL. Our results suggest that the tumor- suppressive effect of the antioxidative fraction of white mulberry is likely due to apoptosis mediated by p53 and NFκB signaling.
Collapse
Affiliation(s)
- AHM Khurshid Alam
- Department of Pharmacy, University of Rajshahi, Rajshahi, Bangladesh
- * E-mail:
| | | | - Muhammad Ali Khan
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj, Bangladesh
| | - Syed Rashel Kabir
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Md Abu Reza
- Department of Genetic Engineering & Biotechnology, University of Rajshahi, Rajshahi, Bangladesh
| | | | | | | | - Mamunur Rashid
- Department of Pharmacy, University of Rajshahi, Rajshahi, Bangladesh
| | - Md Golam Sadik
- Department of Pharmacy, University of Rajshahi, Rajshahi, Bangladesh
| |
Collapse
|
7
|
Castro LSEPW, Kviecinski MR, Ourique F, Parisotto EB, Grinevicius VMAS, Correia JFG, Wilhelm Filho D, Pedrosa RC. Albendazole as a promising molecule for tumor control. Redox Biol 2016; 10:90-99. [PMID: 27710854 PMCID: PMC5053114 DOI: 10.1016/j.redox.2016.09.013] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 09/21/2016] [Indexed: 12/22/2022] Open
Abstract
This work evaluated the antitumor effects of albendazole (ABZ) and its relationship with modulation of oxidative stress and induction of DNA damage. The present results showed that ABZ causes oxidative cleavage on calf-thymus DNA suggesting that this compound can break DNA. ABZ treatment decreased MCF-7 cell viability (EC50=44.9 for 24 h) and inhibited MCF-7 colony formation (~67.5% at 5 μM). Intracellular ROS levels increased with ABZ treatment (~123%). The antioxidant NAC is able to revert the cytotoxic effects, ROS generation and loss of mitochondrial membrane potential of MCF-7 cells treated with ABZ. Ehrlich carcinoma growth was inhibited (~32%) and survival time was elongated (~50%) in animals treated with ABZ. Oxidative biomarkers (TBARS and protein carbonyl levels) and activity of antioxidant enzymes (CAT, SOD and GR) increased, and reduced glutathione (GSH) was depleted in animals treated with ABZ, indicating an oxidative stress condition, leading to a DNA damage causing phosphorylation of histone H2A variant, H2AX, and triggering apoptosis signaling, which was confirmed by increasing Bax/Bcl-xL rate, p53 and Bax expression. We propose that ABZ induces oxidative stress promoting DNA fragmentation and triggering apoptosis and inducing cell death, making this drug a promising leader molecule for development of new antitumor drugs. The ABZ redox signaling pathway was examined in cancer inhibition. The oxidative stress can explain the ABZ antitumor mechanisms of action. The ABZ oxidative stress modulation can be used for cancer therapeutics development. ABZ can be used as a molecule prototype in possible drug repositioning.
Collapse
Affiliation(s)
- L S E P W Castro
- Department of Biochemistry, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - M R Kviecinski
- Postgraduate Programe of Health Science, Universidade do Sul de Santa Catarina (UNISUL), Palhoça, SC, Brazil
| | - F Ourique
- Department of Biochemistry, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - E B Parisotto
- Department of Biochemistry, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - V M A S Grinevicius
- Department of Biochemistry, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - J F G Correia
- Department of Biochemistry, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - D Wilhelm Filho
- Departament of Ecology and Zoology, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - R C Pedrosa
- Department of Biochemistry, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil.
| |
Collapse
|
8
|
de Souza Grinevicius VMA, Kviecinski MR, Santos Mota NSR, Ourique F, Porfirio Will Castro LSE, Andreguetti RR, Gomes Correia JF, Filho DW, Pich CT, Pedrosa RC. Piper nigrum ethanolic extract rich in piperamides causes ROS overproduction, oxidative damage in DNA leading to cell cycle arrest and apoptosis in cancer cells. J Ethnopharmacol 2016; 189:139-147. [PMID: 27178634 DOI: 10.1016/j.jep.2016.05.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 05/05/2016] [Accepted: 05/09/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ayurvedic and Chinese traditional medicine and tribal people use herbal preparations containing Piper nigrum fruits for the treatment of many health disorders like inflammation, fever, asthma and cancer. In Brazil, traditional maroon culture associates the spice Piper nigrum to health recovery and inflammation attenuation. AIMS OF THE STUDY The aim of the current work was to evaluate the relationship between reactive oxygen species (ROS) overproduction, DNA fragmentation, cell cycle arrest and apoptosis induced by Piper nigrum ethanolic extract and its antitumor activity. METHODS The plant was macerated in ethanol. Extract constitution was assessed by TLC, UV-vis and ESI-IT-MS/MS spectrometry. The cytotoxicity, proliferation and intracellular ROS generation was evaluated in MCF-7 cells. DNA damage effects were evaluated through intercalation into CT-DNA, plasmid DNA cleavage and oxidative damage in CT-DNA. Tumor growth inhibition, survival time increase, apoptosis, cell cycle arrest and oxidative stress were assessed in Ehrlich ascites carcinoma-bearing mice. RESULTS Extraction yielded 64mg/g (36% piperine and 4.2% piperyline). Treatments caused DNA damage and reduced cell viability (EC50=27.1±2.0 and 80.5±6.6µg/ml in MCF-7 and HT-29 cells, respectively), inhibiting cell proliferation by 57% and increased ROS generation in MCF-7 cells (65%). Ehrlich carcinoma was inhibited by the extract, which caused reduction of tumor growth (60%), elevated survival time (76%), cell cycle arrest and induced apoptosis. The treatment with extract increased Bax and p53 and inhibited Bcl-xL and cyclin A expression. It also induced an oxidative stress in vivo verified as enhanced lipid peroxidation and carbonyl proteins content and increased activities of glutathione reductase, superoxide dismutase and catalase. GSH concentration was decreased in tumor tissue from mice. CONCLUSION The ethanolic extract has cytotoxic and antiproliferative effect on MCF-7 cells and antitumor effect in vivo probably due to ROS overproduction that induced oxidative stress affecting key proteins involved in cell cycle arrest at G1/S and triggering apoptosis. Finally, the overall data from this study are well in line with the traditional claims for the antitumor effect of Piper nigrum fruits.
Collapse
MESH Headings
- Animals
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Apoptosis/drug effects
- Apoptosis Regulatory Proteins/metabolism
- Biomarkers, Tumor/metabolism
- Breast Neoplasms/drug therapy
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Carcinoma, Ehrlich Tumor/drug therapy
- Carcinoma, Ehrlich Tumor/genetics
- Carcinoma, Ehrlich Tumor/metabolism
- Carcinoma, Ehrlich Tumor/pathology
- Cell Cycle Checkpoints/drug effects
- Cell Cycle Proteins/metabolism
- DNA Damage
- Dose-Response Relationship, Drug
- Ethanol/chemistry
- Female
- HT29 Cells
- Humans
- Lipid Peroxidation/drug effects
- MCF-7 Cells
- Male
- Mice, Inbred BALB C
- Oxidants/isolation & purification
- Oxidants/pharmacology
- Oxidative Stress/drug effects
- Phytotherapy
- Piper nigrum/chemistry
- Piperidines/isolation & purification
- Piperidines/pharmacology
- Plant Extracts/isolation & purification
- Plant Extracts/pharmacology
- Plants, Medicinal
- Protein Carbonylation/drug effects
- Reactive Oxygen Species/metabolism
- Solvents/chemistry
- Time Factors
- Tumor Burden/drug effects
- Up-Regulation
Collapse
Affiliation(s)
| | - Maicon Roberto Kviecinski
- Programa de Pós-Graduação em Ciências da Saúde da Universidade do Sul de Santa Catarina (UNISUL), SC, Brazil
| | - Nádia Sandrini Ramos Santos Mota
- Laboratório de Bioquímica Experimental, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Fabiana Ourique
- Laboratório de Bioquímica Experimental, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | | | - Rafaela Rafognato Andreguetti
- Laboratório de Bioquímica Experimental, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - João Francisco Gomes Correia
- Laboratório de Bioquímica Experimental, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Danilo Wilhem Filho
- Departamento de Ecologia e Zoologia,Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Claus Tröger Pich
- NITBIO, Universidade Federal de Santa Catarina, Araranguá, SC, Brazil
| | - Rozangela Curi Pedrosa
- Laboratório de Bioquímica Experimental, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
| |
Collapse
|
9
|
ur Rasool R, Rah B, Amin H, Nayak D, Chakraborty S, Rawoof A, Mintoo MJ, Yousuf K, Mukherjee D, Kumar LD, Mondhe DM, Goswami A. Dual modulation of Ras-Mnk and PI3K-AKT-mTOR pathways: A Novel c-FLIP inhibitory mechanism of 3-AWA mediated translational attenuation through dephosphorylation of eIF4E. Sci Rep 2016; 6:18800. [PMID: 26728896 PMCID: PMC4700468 DOI: 10.1038/srep18800] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 11/24/2015] [Indexed: 12/19/2022] Open
Abstract
The eukaryotic translation initiation factor 4E (eIF4E) is considered as a key survival protein involved in cell cycle progression, transformation and apoptosis resistance. Herein, we demonstrate that medicinal plant derivative 3-AWA (from Withaferin A) suppressed the proliferation and metastasis of CaP cells through abrogation of eIF4E activation and expression via c-FLIP dependent mechanism. This translational attenuation prevents the de novo synthesis of major players of metastatic cascades viz. c-FLIP, c-Myc and cyclin D1. Moreover, the suppression of c-FLIP due to inhibition of translation initiation complex by 3-AWA enhanced FAS trafficking, BID and caspase 8 cleavage. Further ectopically restored c-Myc and GFP-HRas mediated activation of eIF4E was reduced by 3-AWA in transformed NIH3T3 cells. Detailed underlying mechanisms revealed that 3-AWA inhibited Ras-Mnk and PI3-AKT-mTOR, two major pathways through which eIF4E converges upon eIF4F hub. In addition to in vitro studies, we confirmed that 3-AWA efficiently suppressed tumor growth and metastasis in different mouse models. Given that 3-AWA inhibits c-FLIP through abrogation of translation initiation by co-targeting mTOR and Mnk-eIF4E, it (3-AWA) can be exploited as a lead pharmacophore for promising anti-cancer therapeutic development.
Collapse
Affiliation(s)
- Reyaz ur Rasool
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Bilal Rah
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Hina Amin
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Debasis Nayak
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Souneek Chakraborty
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Abdul Rawoof
- Center for Cellular and Molecular Biology, Uppal Road, Hyderabad, AP-50007, India
| | - Mubashir Javed Mintoo
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Khalid Yousuf
- Natural Product Chemistry, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Debaraj Mukherjee
- Natural Product Chemistry, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Lekha Dinesh Kumar
- Center for Cellular and Molecular Biology, Uppal Road, Hyderabad, AP-50007, India
| | - Dilip Manikaro Mondhe
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| | - Anindya Goswami
- Academy of Scientific & Innovative Research (AcSIR), New Delhi, India
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu Tawi, J&K – 180001, India
| |
Collapse
|
10
|
Kalish SV, Budanova OP, Lyamina SV, Malyshev IY. [Genetic features of nitric oxide generating systems predetermine the body's resistance to the development of carcinoma]. Patol Fiziol Eksp Ter 2015; 59:65-71. [PMID: 26226691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Predisposition to tumors is often determined by how effectively the genotype of an individual forms an immune defense. An important factor of such protection is macrophage NO. We assumed that the body's vulnerability to the development of tumors may depend from the characteristics of the NO generating systems. The content of NO in the tumor changed by ITU, inhibitor of iNOS, c-PTIO, traps and SNP, donor NO. Production of macrophage NO were evaluated by nitrites in the culture media. iNOS was assessed using the Western blot analysis. Phenotype of macrophages was assessed using cytometry for CD labels. Life span of mice C57BL/6N with Ehrlich tumor was 25% greater than that of the C57BL/6J. Reducing the content of NO in the tumor reduced life expectancy of high-resistance to tumor subline C57BL/6N at 23%. Increase of NO increased life expectancy of low-resistance subline C57BL/6J at 26%. Macrophages of C57BL/6N were 1.5 times higher contents of iNOS and NO production, as compared with macrophages of C57BL/6J. CD phenotype markers determined the macrophage phenotype C57BL/6N as M1 and C57BL/6J mice macrophage phenotype as M2. Thus, the body's vulnerability to the development of tumors may depend from the characteristics of the NO generating systems. C57BL/6J, unlike C57BL/6N does not synthesize NNT (nicotinamide nucleotide transhydrogenase) and have differences in the single nucleotide polymorphism (SNP). The important role of NO in the resistance to Carcinoma, NNT and SNP deserve attention in the development of new methods of antitumor therapy.
Collapse
|
11
|
Goltsev AN, Babenko NN, Gaevskaya A, Chelombitko OV, Bondarovich NA, Dubrava TG, Ostankov MV, Klochkov VK, Kavok NS, Malyukin YV. [FUNCTIONAL ACTIVITY OF EHRLICH CARCINOMA CELLS AFTER TREATMENT WITH HYBRID NANOCOMPLEXES CONTAINING ORTHOVANADATES OF RARE-EARTH ELEMENTS, CHOLESTEROL AND LUMINESCENT DYE]. ACTA ACUST UNITED AC 2015; 61:60-8. [PMID: 27025046 DOI: 10.15407/fz61.06.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Tumor development is the consequence of expanding the population of low differentiated cells with unlimited self-maintenance potential, i.e. cancer stem cells (CSCs). Application of new forms of nanocomposites capable of binding to CSCs and inducing the tumor destruction is perspective direction for treating this pathology. There have been developed the methods of obtaining hybrid nanocomplexes containing rare-earth orthovanadates GdYVO4:Eu³⁺, cholesterol and luminescent dye Dil. By immune fluorescence method using monoclonal antibodies to CD44, CD24, CD117 and Sca-1 markers there has been established the change in the ratio of tumor progenitors of various differentiation levels in a general pool of Ehrlich carcinoma (EC) after treatment with hybrid nanocomplexes. Essential reduction in the concentration of the most tumorogenic CD44high cells with simultaneous rise in the number of CD117⁺-cells resulted in an increased index of CD44high/CD117⁺ ratio. It has been demonstrated that application of hybrid nanocomplexes suppressed the tumor growth almost by 80%. The value of cooperative interactions of the cells with different phenotype signs in tumor sites has been proved. The index of CD44high/CD117⁺ ratio can be used as one of diagnostic and prognostic parameters of development and inactivation rate of tumor process when using different types of anti-tumor therapy.
Collapse
|
12
|
Pshennikova MG, Bakhtina LY, Kalish SV, Budanova OP, Malyshev IY. [The role of genetic peculiarityes (of organisms) in the resistance to neoplastic processes in August line and Wistar population rats]. Patol Fiziol Eksp Ter 2014:37-39. [PMID: 25318161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The probability of development of the Ehrlich's ascites carcinoma in young August and Wistar rats was investigated. The Ehrlich's carcinoma strain was derived in mice in the N.N. Blokhin Russian Cancer Research Center. The tumor was transplanted into rats intraperitonially. It was shown that the transplanted murine carcinomas did not arouse tumors in rats, but caused pathologic effects: abrupt growth impairment and partial loss in the August rats while in the Wistar rats the growth impairment was slight and there was no loss. Thus, the first, there was no tumor growth in rats and the second, the indicated effects of the murine tumor transplantation were more dramatic in the August rats than thouse in the Wistar rats.
Collapse
|
13
|
|
14
|
Levan G, Mandahl N, Bengtsson BO, Levan A. Experimental elimination and recovery of double minute chromosomes in malignant cell populations. Hereditas 2009; 86:75-90. [PMID: 903253 DOI: 10.1111/j.1601-5223.1977.tb01214.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
15
|
Hasholt L, Dan0 K. Cytogenetic investigations on a Ehrlich ascites tumor, and four sublines resistant to daunomycin, adriamycin, vincristine and vinblastine. Hereditas 2009; 77:303-10. [PMID: 4141349 DOI: 10.1111/j.1601-5223.1974.tb00942.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
|
16
|
|
17
|
Nielsén K. Chromosomal evolution in the Ehrlich-Lettré complex of hyperdiploid mouse ascites tumors: results from seven laboratory strains. Hereditas 2009; 84:77-108. [PMID: 1010760 DOI: 10.1111/j.1601-5223.1976.tb01198.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|
18
|
Nielsén K. The chromosomes of an in vitro derivative of an Ehrlich ascites tumor of the mouse during its adaptation from monolayer to suspension culture. Hereditas 2009; 70:217-24. [PMID: 4616928 DOI: 10.1111/j.1601-5223.1972.tb01380.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
|
19
|
|
20
|
|
21
|
|
22
|
Bhattacharya P. 3D model of RNA polymerase and bidirectional transcription. Biochem Biophys Res Commun 2007; 355:103-10. [PMID: 17288994 PMCID: PMC1995083 DOI: 10.1016/j.bbrc.2007.01.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2007] [Accepted: 01/22/2007] [Indexed: 10/23/2022]
Abstract
In the in vitro mitochondrial (mt) transcription initiation system with mt RNA polymerase fraction and mt lysate, the transcription initiation products were shown to be synthesized bidirectionally from the only H-strand-promoter (HSP)/L-strand-promoter region (LSP) of the mitochondrial D-loop genome segment. These transcription products ranged between >100 and >800 bp with the purified mitochondrial RNA polymerase fraction, but were larger (>2030-4000 bp) in size with the mitochondrial lysate in both human and mouse. In this brief report, an in vitro reconstituted mitochondrial transcription system purified by affinity chromatography (heparin-Sepharose) from mouse hypotetraploid letter Ehrlich ascites tumor cell mitochondria was shown to initiate transcription bidirectionally from the mitochondrial D-loop region (HSP/LSP), as evidenced by in vitro generated transcription products. The in vitro generated transcription products were separated by sequencing gel. But this in vitro reconstituted transcription system was not studied beyond the D-loop region. A 3D model of the enzyme RNA polymerase was docked with both ATP and CTP.
Collapse
Affiliation(s)
- Pradip Bhattacharya
- Department of Biochemistry, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
| |
Collapse
|
23
|
Tanaka H, Kageyama K, Kimura M, Iwamoto SI, Ueno Y, Asagi K, Asada R, Miwa N. Promotive effects of hyperthermia on the inhibition of DNA synthesis in ehrlich ascites tumor cells by eicosapentaenoic and docosahexaenoic acids. Exp Oncol 2006; 28:203-8. [PMID: 17080013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
AIM To evaluate inhibitory effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on DNA synthesis in combination with hyperthermia in vitro. METHODS A suspension of Ehrlich ascites tumor cells (EAT) was mixed with DHA or EPA in a glass tube, heated at 37 degrees C, 40 degrees C, or 42 degrees C for 1 h in a water bath, and cultured at 37 degrees C for 19 or 96 h. DNA synthesis was assayed by monitoring of the incorporation of [3H]-thymidine into the acid-insoluble fraction. DHA or EPA incorporated into EAT cells was extracted and measured by thin-layer chromatography and gas-liquid chromatography. RESULTS The inhibition of DNA synthesis by EPA or DHA increased markedly upon the treatment at 42 degrees C and 40 degrees C compared to that at 37 degrees C. At 37 degrees C, inhibitory action of EPA was more potent than that of DHA at low concentrations (at 50 microM -- DNA synthesis level: EPA, 63.1%; DHA, 87.9%), whereas inhibitory action of DHA was higher at 150 muM (16.7%, 4.4%, ibid.). The effect of DHA compared to EPA was more marked at 40 degrees C (29.0%, 19.2% at 100 microM) or 42 degrees C (19.7%, 10.6% at 100 microM). Evaluation of DNA synthesis rate in the cells treated for 1 h by EPA or DHA with the next culturing of EAT cells for 19 h resulted in the enhanced inhibitory activity of EPA even at concentrations as low as 50 microM at either 37 degrees C (0.5%, 11.3%) or 42 degrees C (0.6%, 4.5%), which in these conditions was higher than that of DHA. At the same time the rate of incorporation of EPA in EAT cells at 37 degrees C or 42 degrees C was lower than that of DHA. CONCLUSION Administration of DHA or EPA in vitro significantly inhibit DNA synthesis, and such effect is enhanced by combination of PUFAs with hyperthermia.
Collapse
Affiliation(s)
- H Tanaka
- Osaka Butsuryo College, 3-33 Otorikita-cho, Sakai 593-8328, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Martín-Rufián M, Segura JA, Lobo C, Matés JM, Márquez J, Alonso FJ. Identification of genes downregulated in tumor cells expressing antisense glutaminase mRNA by differential display. Cancer Biol Ther 2006; 5:54-8. [PMID: 16294018 DOI: 10.4161/cbt.5.1.2238] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Ehrlich ascites tumor cells (EATC) is a highly proliferative malignant cell line derived from mouse mammary epithelia, whereas their derivative, 0.28AS-2 cells, expressing antisense glutaminase mRNA, show a less transformed phenotype and loss of their tumorigenic capacity in vivo correlated with an inhibition of glutaminase expression. The mRNA differential display technique was applied to these two cell lines for the identification and isolation of genes whose transcription was altered. Side-by-side comparisons of cDNA patterns among relevant RNA samples revealed four genes significantly downregulated in 0.28AS-2 cells: high-mobility group Hmga2 protein, Fmnl3 or formin-like protein 3, Nedd-4 ubiquitin-protein ligase, and ubiquitin carboxyl-terminal hydrolase Usp-15. These positives were confirmed by Northern analysis. The four targeted genes have relevant functions in cell growth and proliferation. Our results show the validity of mRNA differential display technique to get insights into the molecular mechanisms underlying the acquisition of a more differentiated phenotype by tumor cells after inhibition of glutaminase expression.
Collapse
MESH Headings
- Animals
- Carcinoma, Ehrlich Tumor/enzymology
- Carcinoma, Ehrlich Tumor/genetics
- Carcinoma, Ehrlich Tumor/pathology
- Cell Line, Tumor
- Cell Proliferation
- DNA, Complementary/genetics
- Down-Regulation
- Gene Expression Regulation, Enzymologic
- Gene Expression Regulation, Neoplastic
- Glutaminase/genetics
- Glutaminase/physiology
- Mice
- RNA, Antisense/genetics
- RNA, Antisense/metabolism
- RNA, Messenger/analysis
- Rats
Collapse
Affiliation(s)
- Mercedes Martín-Rufián
- Departamento de Biología Molecular y Bioquímica, Laboratorio de Química de Proteínas, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | | | | | | | | | | |
Collapse
|
25
|
Segura JA, Donadio AC, Lobo C, Matés JM, Márquez J, Alonso FJ. Inhibition of glutaminase expression increases Sp1 phosphorylation and Sp1/Sp3 transcriptional activity in Ehrlich tumor cells. Cancer Lett 2005; 218:91-8. [PMID: 15639344 DOI: 10.1016/j.canlet.2004.06.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2004] [Accepted: 06/28/2004] [Indexed: 12/31/2022]
Abstract
Tumor cells expressing antisense glutaminase RNA show a drastic inhibition of glutaminase activity and they acquire a more differentiated phenotype. We have studied the expression of Sp1 and Sp3 transcription factors in both Ehrlich tumor cells and their derivative 0.28AS-2 antisense glutaminase expressing cells. The expression of phosphorylated Sp1 in 0.28AS-2 cells was 3-fold the expression in EATC. Full length Sp3 was also incremented in 0.28AS-2 cells. Sp1 and Sp3 binding to a consensus Sp1 probe was higher in 0.28AS-2 nuclear extracts, as determined by supershift assays. Sp1-DNA binding was inhibited by phosphatase treatment, demonstrating that phosphorylation of Sp1 is critical for its DNA binding capacity. The Sp1 and Sp3 DNA binding found in 0.28AS-2 cells was also correlated with an increased Sp1 activity, as shown in transient transfections assays carried out with a luciferase reporter plasmid. Incubation of Ehrlich tumor cells with the differentiation agent PMA could not totally reproduce the Sp1/Sp3 changes observed in 0.28AS-2 cells. However, it was demonstrated that the intracellular concentration of glutamine, but not glutamate or aspartate, is increased in 0.28AS-2 cells. In conclusion, the antisense inhibition of glutaminase leads to an increased expression of phosphorylated Sp1 and that correlates with an increase in Sp1 activity.
Collapse
Affiliation(s)
- Juan Antonio Segura
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, 29071 Málaga, Spain.
| | | | | | | | | | | |
Collapse
|
26
|
Lora J, Alonso FJ, Segura JA, Lobo C, Márquez J, Matés JM. Antisense glutaminase inhibition decreases glutathione antioxidant capacity and increases apoptosis in Ehrlich ascitic tumour cells. ACTA ACUST UNITED AC 2004; 271:4298-306. [PMID: 15511236 DOI: 10.1111/j.1432-1033.2004.04370.x] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Glutamine is an essential amino acid in cancer cells and is required for the growth of many other cell types. Glutaminase activity is positively correlated with malignancy in tumours and with growth rate in normal cells. In the present work, Ehrlich ascites tumour cells, and their derivative, 0.28AS-2 cells, expressing antisense glutaminase mRNA, were assayed for apoptosis induced by methotrexate and hydrogen peroxide. It is shown that Ehrlich ascites tumour cells, expressing antisense mRNA for glutaminase, contain lower levels of glutathione than normal ascites cells. In addition, 0.28AS-2 cells contain a higher number of apoptotic cells and are more sensitive to both methotrexate and hydrogen peroxide toxicity than normal cells. Taken together, these results provide insights into the role of glutaminase in apoptosis by demonstrating that the expression of antisense mRNA for glutaminase alters apoptosis and glutathione antioxidant capacity.
Collapse
Affiliation(s)
- Jorge Lora
- Departamento de Biología Molecular y Bioquímica, Laboratorio de Química de Proteínas, Facultad de Ciencias, Universidad de Málaga, Spain
| | | | | | | | | | | |
Collapse
|
27
|
Haga A, Funasaka T, Niinaka Y, Raz A, Nagase H. Autocrine motility factor signaling induces tumor apoptotic resistance by regulations Apaf-1 and Caspase-9 apoptosome expression. Int J Cancer 2004; 107:707-14. [PMID: 14566819 DOI: 10.1002/ijc.11449] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Autocrine motility factor (AMF) is a cytokine that regulates locomotion and metastasis of tumor cells. It is well known that expression levels of AMF secretion and its receptor (AMF R) are closely related to tumor malignancy and rheumatoid arthritis. We have established that AMF signaling induced anti-apoptotic activity and that human fibrosarcoma HT-1080 line that secreted high levels of AMF were resistant to drug-induced apoptosis. These cells did not express the apoptotic protease activating factor-1 (Apaf-1) and Caspase-9 genes that encode for the proteins that form the "apoptosome" complex. The disappearance of the Apaf-1 and Caspase-9 gene was recovered by a cellular signaling inhibitor of protein kinase C, phosphatidylinositol 3-phosphate kinase and mitogen-activated protein kinase of the in vitro cultured human fibrosarcoma HT-1080 line. Treatment with these inhibitors favored apoptotic cell death induced by anti-cancer drugs of the murine ascites Ehrlich line. Apoptotic resistance of tumor cells allows them to escape death from cancer chemotherapy, so an understanding of malignant anti-apoptotic activities is important. Antibodies against AMF induced Ehrlich ascites apoptosis in vitro, and effectively aided in vivo apoptosis induced by anti-cancer drugs. The results might indicate a novel route by which tumor cells protect themselves with products, such as AMF, and proliferate despite various stresses and chemical insults; AMF regulates expression of Apaf-1 and caspase-9 genes via a complex signaling pathway and indirectly regulates formation of the apoptosome.
Collapse
Affiliation(s)
- Arayo Haga
- Department of Hygienics, Gifu Pharmaceutical University, Gifu, Japan.
| | | | | | | | | |
Collapse
|
28
|
Abu-Sinna G, Esmat AY, Al-Zahaby AAS, Soliman NA, Ibrahim TM. Fractionation and characterization of Cerastes cerastes cerastes snake venom and the antitumor action of its lethal and non-lethal fractions. Toxicon 2003; 42:207-15. [PMID: 12906892 DOI: 10.1016/s0041-0101(03)00138-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In the present study fractionation of the Cerastes cerastes cerastes snake venom by gel filtration on Sephadex G-75 gave 14 protein fractions. Phospholipase PLA2 activity is not uniformly correlated with the lethality to mice in regard to all venom fractions. F11 which is the richest in PLA2 activity is less toxic than F3, which contains a small amount of PLA2, and F12 is the lowest in lethality and PLA2 activity. Treatment of Ehrlich ascites-bearing mice with two i.p. injections of the most lethal fraction (F3) or a non-lethal fraction (F4) resulted in a significant antitumor activity demonstrated by an increase in the mean survival time of the animals (22.5 and 27.9 days) and in the tumor inhibition ratio of tumor growth (T/C% 139 and 172, respectively), compared to tumor-bearing controls. The cytotoxic activity of F3 and F4 against Ehrlich ascites carcinoma cells might be due to the presence of a cytotoxin rather than to the direct cytolytic effect of the PLA2 because the non-lethal F4 is free from PLA2. Treatment of Swiss albino mice with two i.p. injections of F3 or F4 at the adopted dose levels produced no detrimental side effects demonstrated by the insignificant changes in the tested serum and liver parameters. Treatment of the tumor-bearing mice with the same venom fractions significantly modulated all of the studied biochemical parameters in the serum and liver tissues, compared to normal controls.
Collapse
Affiliation(s)
- Gamal Abu-Sinna
- Department of Zoology, Faculty of Science, Ain Shams University, Cairo, Egypt
| | | | | | | | | |
Collapse
|
29
|
He Q, Skog S. Involvement of a substrate cycle between thymidine and thymidylate in the regulation of DNA precursor pool in ehrlich ascites tumour. Cell Physiol Biochem 2003; 12:305-14. [PMID: 12438766 DOI: 10.1159/000067900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In Ehrlich ascites tumour (EAT) cells the main route for dTTP required for DNA synthesis is closely related to thymidylate synthesis activity via the de novo pathway. However, more than 10-time of thymidylate (dTMP) is synthesised by cytosolic thymidine kinase (TK1) via the salvage pathway than needed for DNA synthesis in this cells. Therefore, this study focus to determine if a substrate cycle exists between thymidine (dTdR) and dTMP in the EAT cells. Results show that the ratio of K'eq/Q for the TK1 reaction is 264.2 and for the thymidylate 5'-phosphatase (dTMPase) reaction is 110.9 in the exponentially growing cells, respectively. Since the apparent ratios of K'eq/Q for both reactions are different from equality (ñ1) by two orders, it appears as a non-equilibrium reaction. This indicates that when TK1 and dTMPase are simultaneously active in the exponentially growing cells, a substrate cycle results. The regulation of the excess of non-essential products of dTdR/dTMP for DNA synthesis is involved in a substrate cycle for maintaining a balanced nucleotide pool, hence ensuring a balanced supply of the DNA precursor in the exponentially growing cells. As the tumours continue to grow, cells reached the stationary phase. The ratio of K'eq/Q for TK1 reaction is 7.7 and for the dTMPase reaction is 81.1, showing less than the equilibrium of two orders of magnitude. In this case, dTMPase could not act with TK1 together to form a pair of reaction, leading to an elevated concentration of intracellular dTMP and a dramatically excretion of dTdR into the ascites fluid.
Collapse
Affiliation(s)
- Qimin He
- Department of Oncology Clinical Research Laboratory, KFC, Huddinge University Hospital, Karolinska Institute, Stockholm, Sweden.
| | | |
Collapse
|
30
|
Affiliation(s)
- Marc Thiry
- Laboratory of Cell and Tissue Biology, University of Liege, Liege, Belgium
| |
Collapse
|
31
|
Abstract
TFIIH is a multisubunit protein complex that plays an essential role in nucleotide excision repair and transcription of protein-coding genes. Here, we report that TFIIH is also required for ribosomal RNA synthesis in vivo and in vitro. In yeast, pre-rRNA synthesis is impaired in TFIIH ts strains. In a mouse, part of cellular TFIIH is localized within the nucleolus and is associated with subpopulations of both RNA polymerase I and the basal factor TIF-IB. Transcription systems lacking TFIIH are inactive and exogenous TFIIH restores transcriptional activity. TFIIH is required for productive but not abortive rDNA transcription, implying a postinitiation role in transcription. The results provide a molecular link between RNA polymerase I transcription and transcription-coupled repair of active ribosomal RNA genes.
Collapse
Affiliation(s)
- Sebastian Iben
- Division of Molecular Biology of the Cell II, German Cancer Research Center, D-69120, Heidelberg, Germany
| | | | | | | | | | | | | |
Collapse
|
32
|
Foster JD, Wiedemann JM, Pan CJ, Chou JY, Nordlie RC. Discriminant responses of the catalytic unit and glucose 6-phosphate transporter components of the hepatic glucose-6-phosphatase system in Ehrlich ascites-tumor-bearing mice. Arch Biochem Biophys 2001; 393:117-22. [PMID: 11516168 DOI: 10.1006/abbi.2001.2481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effect of Ehrlich ascites tumor cells, in vivo, on the hepatic glucose-6-phosphatase (G6Pase) system was examined. The V(max) for glucose 6-phosphate hydrolysis by G6Pase was reduced by 40% and a greater than 15-fold decrease in mRNA encoding the catalytic unit of the G6Pase system was observed 8 days after injection with tumor cells. Blood glucose concentration was decreased from 169 +/- 17 to 105 +/- 9 mg/dl in tumor-bearing mice. There was no change in the G6P transporter (G6PT) mRNA level. However, there was a significant decrease in G6P accumulation into hepatic microsomal vesicles derived from tumor-bearing mice. Decreased G6P accumulation was also associated with a decrease in G6Pase hydrolytic activity in the presence of vanadate, a potent catalytic-unit inhibitor. In addition, G6P accumulation was nearly abolished in microsomes treated with N-bromoacetylethanolamine phosphate, an irreversible inhibitor of the G6PT. These results demonstrate that the catalytic unit and G6PT components of the G6Pase system can be discriminantly regulated, and that microsomal glucose 6-phosphate uptake is dependent on catalytic unit activity as well as G6PT action.
Collapse
Affiliation(s)
- J D Foster
- Department of Biochemistry and Molecular Biology, University of North Dakota School of Medicine and Health Sciences, 501 North Columbia Road, Grand Forks, North Dakota 58203, USA.
| | | | | | | | | |
Collapse
|
33
|
Hieda M, Tachibana T, Fukumoto M, Yoneda Y. Nuclear import of the U1A splicesome protein is mediated by importin alpha /beta and Ran in living mammalian cells. J Biol Chem 2001; 276:16824-32. [PMID: 11278401 DOI: 10.1074/jbc.m008299200] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
U1A is a component of the uracil-rich small nuclear ribonucleoprotein. The molecular mechanism of nuclear import of U1A was investigated in vivo and in vitro. When recombinant deletion mutants of U1A are injected into the BHK21 cell cytoplasm, the nuclear localization signal (NLS) of U1A is found in the N-terminal half of the central domain (residues 100-144 in mouse U1A). In an in vitro assay, it was found that the U1A-NLS accumulated in only a portion of the nuclei in the absence of cytosolic extract. In contrast, the addition of importin alpha/beta and Ran induced the uniform nuclear accumulation of U1A-NLS in all cells. Furthermore, U1A was found to bind the C-terminal portion of importin alpha. In addition, the in vitro nuclear migration of full-length U1A was found to be exclusively dependent on importin alpha/beta and Ran. Moreover, in living cells, the full-length U1A accumulated in the nucleus in a Ran-dependent manner, and nuclear accumulation was inhibited by the importin beta binding domain of importin alpha. These results suggest that the nuclear import of U1A is mediated by at least two distinct pathways, an importin alpha/beta and Ran-dependent and an -independent pathway in permeabilized cells, and that the latter pathway may be suppressed in intact cells.
Collapse
Affiliation(s)
- M Hieda
- Department of Cell Biology and Neuroscience, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka and Institute for Molecular and Cellular Biology, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | | | | | | |
Collapse
|
34
|
König K, Riemann I, Fischer P, Halbhuber KJ. Multiplex FISH and three-dimensional DNA imaging with near infrared femtosecond laser pulses. Histochem Cell Biol 2000; 114:337-45. [PMID: 11131098 DOI: 10.1007/s004180000185] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We report on a novel technology for multicolor gene and chromosome detection as well as for three-dimensional (3D) DNA imaging by multiphoton excitation of multiple FISH fluorophores and DNA stains. Near infrared femtosecond laser pulses at 770 nm were used to simultaneously excite the visible fluorescence of a wide range of FISH fluorophores, such as FITC, DAC, Cy3, Cy5, Cy5.5, rhodamine, spectrum aqua, spectrum green, spectrum orange, Jenfluor, and Texas red as well as of DNA/chromosome stains, for example Hoechst 33342, DAPI, SYBR green, propidium iodide, ethidium homodimer, and Giemsa. In addition to the advantage of using only one excitation wavelength for a variety of fluorophores, multiphoton excitation provided the intrinsic possibility of 3D fluorescence imaging. The technology has been used in human genetics for the diagnosis of numerical chromosome aberrations and microdeletions. In particular, multicolor 3D images of the intranuclear localization of FISH-labeled chromosome territories in interphase nuclei of amniotic fluid cells have been obtained. Using the high light penetration depth at 770 nm, optical sectioning of Hoechst 33342-labeled DNA within living culture cells and within tissue of living tumor-bearing mice was performed.
Collapse
Affiliation(s)
- K König
- Institute of Anatomy II, Friedrich Schiller University Jena, Germany.
| | | | | | | |
Collapse
|
35
|
Aledo JC, de Pedro E, Gómez-Fabre PM, Núñez de Castro IN, Márquez J. Changes in mRNAs for enzymes of glutamine metabolism in the tumor-bearing mouse. Anticancer Res 2000; 20:1463-6. [PMID: 10928057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Changes in the relative mRNA levels of phosphate-activated glutaminase (PAG) and glutamine synthetase (GS) in the liver and kidney of mice bearing a highly malignant strain of Ehrlich ascites tumor cells were determined at different days after tumor transplantation. Kidney glutaminase mRNA steadily increased, reaching maximum values at day 10 of tumor growth, while those of glutamine synthetase did not change, resulting in a sustained decrease of the GS/PAG ratio in the kidneys of tumor-bearing animals compared with controls. However, the GS/PAG ratio in the liver significantly increased, mainly due to a strong decrease in PAG, whereas GS mRNA levels remained almost unaffected. These results, combined with those previously reported on enzymatic activities and glutamine concentrations in the host-tumor system, suggest a long-term regulation of the host glutaminase enzymes in order to increase the circulating glutamine levels needed for tumor growth.
Collapse
Affiliation(s)
- J C Aledo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Spain
| | | | | | | | | |
Collapse
|
36
|
Barka T, Henderson S, van der Noen HM. Passive immunotherapy of mice bearing Ehrlich ascites tumor expressing human, membrane-bound placental alkaline phosphatase. Tumour Biol 2000; 21:145-52. [PMID: 10754465 DOI: 10.1159/000030121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The objective of our study was to test if a tumor expressing a transgene coding for a membrane-bound protein is amenable to immunotherapy by antibodies to the same protein. To this end, we have established an Ehrlich ascites tumor (EAT) cell line, EAT-DAP, stably expressing human, membrane-bound placental alkaline phosphatase (PLAP) by infecting EAT cells (EATC) with the retroviral vector DAP and selecting neomycin-resistant cells. EATC and EAT-DAP cells grew at similar rates in vitro, and produced ascites tumor in Swiss-Webster mice with similar efficiency. We have treated mice bearing EAT-DAP ascites tumor with a mouse monoclonal antibody to human PLAP or with a monoclonal antibody to human C proteins of the heterogenous ribonucleoprotein complex (hnRNP). The average survival of mice treated with anti-hnRNP was 16.4 +/- 1.1 days (n = 8). Treatment with anti-PLAP prolonged the survival of mice; in 4 mice average survival was 23.3 +/- 5.7 days. Four animals, however, survived for 60 days when they were killed and had no visible signs of tumor. These data support the notion that passive immunotherapy using antibodies against a membrane protein, expressed in tumor cells transduced by a viral vector coding for that protein, may be effective in controlling tumor growth.
Collapse
MESH Headings
- Alkaline Phosphatase
- Animals
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/immunology
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/immunology
- Antigens, Neoplasm/metabolism
- Carcinoma, Ehrlich Tumor/genetics
- Carcinoma, Ehrlich Tumor/immunology
- Carcinoma, Ehrlich Tumor/pathology
- Carcinoma, Ehrlich Tumor/therapy
- Cell Division
- Cell Membrane/enzymology
- Cell Transformation, Neoplastic
- Female
- Fluorescent Antibody Technique
- GPI-Linked Proteins
- Gene Transfer Techniques
- Heterogeneous-Nuclear Ribonucleoproteins
- Humans
- Immunization, Passive
- Injections, Intraperitoneal
- Isoenzymes/genetics
- Isoenzymes/immunology
- Isoenzymes/metabolism
- Mice
- Neoplasm Metastasis
- Neoplasm Transplantation
- Ribonucleoproteins/immunology
- Survival Rate
- Time Factors
- Tumor Cells, Cultured
Collapse
Affiliation(s)
- T Barka
- Department of Cell Biology and Anatomy, Mount Sinai School of Medicine, New York, NY 10029, USA.
| | | | | |
Collapse
|
37
|
Iozef R, Becker K, Boehme CC, Schirmer RH, Werner D. Assembly and functional expression of murine glutathione reductase cDNA: a sequence missing in expressed sequence tag libraries. Biochim Biophys Acta 2000; 1500:137-41. [PMID: 10564726 DOI: 10.1016/s0925-4439(99)00094-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Glutathione reductase (GR) is a chemotherapeutic target. Murine GRcDNA, which contains 85% GC in the 38 codons following the start codon, was assembled from the PCR-amplified exon 1 and a downstream cDNA prior to expression in Escherichia coli as a His(6)-tagged protein. Recombinant GR, an FAD-containing homodimer, corresponds in its enzymic and spectral properties to GR isolated from murine Ehrlich ascites tumor cells. Another cDNA, representing GR with a mitochondrial targeting sequence, yielded two distinct enzymically active expression products.
Collapse
Affiliation(s)
- R Iozef
- Center of Biochemistry, Heidelberg University, Im Neuenheimer Feld 328, D-69120, Heidelberg, Germany
| | | | | | | | | |
Collapse
|
38
|
Abstract
The influence of tumor implantation on glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA levels and stability was determined in the spleen of tumor-bearing mice. While GAPDH mRNA levels were not altered in skeletal muscle, kidney and liver from tumor-bearing mice, tumor implantation led to a 5.6-fold increase in the levels of splenic GAPDH mRNA. An enhanced message stability was observed in splenocytes from tumor-bearing animals, suggesting the involvement of post-transcriptional mechanisms in the selective GAPDH mRNA accumulation after tumor implantation. The GAPDH activity/glycolytic flux ratio was 18.5 in the spleen of healthy mice. Therefore, the three-fold increase in the glycolytic flux observed after tumor implantation could hardly justify the necessity for the upregulation of GAPDH.
Collapse
Affiliation(s)
- J C Aledo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Spain
| | | | | | | |
Collapse
|
39
|
Rothbarth K, Spiess E, Juodka B, Yavuzer U, Nehls P, Stammer H, Werner D. Induction of apoptosis by overexpression of the DNA-binding and DNA-PK-activating protein C1D. J Cell Sci 1999; 112 ( Pt 13):2223-32. [PMID: 10362552 DOI: 10.1242/jcs.112.13.2223] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Apoptosis is induced in various tumor cell lines by vector-dependent overexpression of the conserved gene C1D that encodes a DNA-binding and DNA-PK-activating protein. C1D is physiologically expressed in 50 human tissues tested, which points to its basic cellular function. The expression of this gene must be tightly regulated because elevated levels of C1D protein, e.g. those induced by transient vector-dependent expression, result in apoptotic cell death. Cells transfected with C1D-expressing constructs show terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling of DNA ends. Transfections with constructs in which C1D is expressed in fusion with the (enhanced) green fluorescent protein from A. victoria (EGFP) allow the transfected cells to be identified and the morphological changes induced to be traced. Starting from intense nuclear spots, green fluorescence reflecting C1D expression increases dramatically at 12–24 hours post-transfection. Expression of C1D-EGFP protein is accompanied by morphological changes typical of apoptotic cell death, e.g. cytoplasmic vacuolation, membrane blebbing and nuclear disintegration. Cell shrinkage and detachment from extracellular matrix are observed in monolayer cultures while suspension cells become progressively flattened. The facility to differentiate between transfected and non-transfected cells reveals that non-transfected cells co-cultured with transfected cells also show the morphological changes of apoptosis, which points to a bystander effect. C1D-dependent apoptosis is not induced in cells with non-functional p53. Accordingly, C1D-induced apoptosis is discussed in relation to its potential to activate DNA-PK, which has been considered to act as an upstream activator of p53.
Collapse
Affiliation(s)
- K Rothbarth
- Division Biochemistry of the Cell and Biomedical Structure Analysis Group, German Cancer Research Center, D-69120 Heidelberg, Germany
| | | | | | | | | | | | | |
Collapse
|
40
|
Khanson KP, Imianitov EN, Posokhov VS, Rosenberg OA. [Modification of the sensitivity of Ehrlich ascitic carcinoma to apoptosis by transfection of thymocyte DNA]. Vopr Onkol 1999; 44:701-3. [PMID: 10087968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
We have demonstrated earlier that the replacement of the plasma membrane components of Erlich adenocarcinoma cells by the ones of thymocytes facilitates induced apoptosis in the tumor cells. Here we questioned whether similar effect can be achieved by transfection of thymocyte DNA. Lyposome transfer of normal DNA did not change the basal level of the programmed cell death. However, transfection activated apoptosis induced by Roentgen irragiation or glucocorticoids. Probably, this effect was due to restoration suppressor genes, which had been lost during the process malignant transformation. These experiments may be useful for the development of gene therapy approaches for tumor sensibilisation.
Collapse
Affiliation(s)
- K P Khanson
- N.N. Petrov Institute of Oncology, St. Petersburg
| | | | | | | |
Collapse
|
41
|
Maskaleris T, Lialiaris T, Triantaphyllidis C. Induction of cytogenetic damage in human lymphocytes in vitro and of antineoplastic effects in Ehrlich ascites tumor cells in vivo treated by methotrexate, hyperthermia and/or caffeine. Mutat Res 1998; 422:229-36. [PMID: 9838133 DOI: 10.1016/s0027-5107(98)00198-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The synergistic effect of methotrexate (at concentrations between 3. 1 and 100 nM) and its combinations with caffeine (618 microM) and/or hyperthermia (42 degreesC for 2 h) on the frequency of sister chromatid exchanges (SCEs), the proliferating rate index and the mitotic index in cultured human lymphocytes, was examined. Also, the in vivo antineoplastic effects of methotrexate (at a concentration of 0.45 microg/g body weight) and its combination with caffeine (120 microg/g body weight), both on the survival time and the increase of the weight of tumor of BALB/c mice inoculated with Ehrlich ascites tumor cells was examined in the present study. The results indicated that: (a) the triple combination of methotrexate, caffeine and hyperthermia synergistically increased the levels of SCEs and exerted cytostatic and cytotoxic action and (b) the combination of methotrexate and caffeine significantly increased the survival span of the mice inoculated with Ehrlich ascites tumor cells and reduced the increase of the weight of their tumors at rates higher than in the case of methotrexate by itself. It is suggested that the above triple combination (methotrexate plus caffeine plus hyperthermia) could achieve increased effectiveness of methotrexate, better therapy results, and could be successfully applied in the treatment of various types of cancer.
Collapse
Affiliation(s)
- T Maskaleris
- Department of Pharmacology, Demokritus University of Thrace, Alexandroupolis, Greece
| | | | | |
Collapse
|
42
|
Abstract
The present paper describes an in vivo micronucleus assay using Cytochalasin B (CyB). Mice bearing three different tumours, fibrosarcoma (Swiss albino mice), B16 F1 melanoma (C57 BL) and Ehrlich ascites carcinoma (Swiss albino mice), were injected with repeated doses of CyB at different time intervals and binucleate cells were scored at 24, 36, 48, 60 and 72 h after CyB injection. It was found that three doses of 3+2+2 mg/kg CyB administered intraperitoneally (i.p.) at 12-h intervals effectively blocked cytokinesis. The maximum number of binucleated cells (BNC) was scored at 60 h after the last CyB dose. This dose schedule was also effective in scoring micronuclei in BNC after irradiation.
Collapse
Affiliation(s)
- P Uma Devi
- Department of Radiobiology, Kasturba Medical College, Manipal 576119, Karnataka, India
| | | | | |
Collapse
|
43
|
Mylonaki-Charalambours E, Mourelatos D, Kotsis A. A comparative study of the cytogenetic and antineoplasmatic effects induced by carboplatin in combination with niacin in human lymphocytes in vitro and in Ehrlich ascites tumor cells in vivo. Chemotherapy 1998; 44:121-8. [PMID: 9551243 DOI: 10.1159/000007103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Enhanced sister chromatid exchange (SCE) levels and cell division delays were observed when cultured human lymphocytes treated with carboplatin (cPt) were exposed to niacin. Cytogenetic damage was also observed by cPt when Ehrlich ascites tumor (EAT) cells were exposed in vivo to nontoxic concentrations of niacin. One hour before intraperitoneal injection of 5-bromodeoxyuridine, adsorbed to activated charcoal, EAT-bearing mice treated intraperitoneally with cPt appeared to have a dose-dependent increase in SCEs and cell division delays. Niacin increased the survival time of the EAT-bearing mice treated with cPt and markedly reduced the ascitic volume. Therefore the in vivo antitumor effect of cPt in conjunction with niacin appears to correlate well with the in vitro or in vivo synergistic effects on cytogenetic damage caused by the combined cPt plus Niacin treatment upon human lymphocytes or EAT cells, respectively.
Collapse
|
44
|
Au KK, Liong E, Li JY, Li PS, Liew CC, Kwok TT, Choy YM, Lee CY, Fung KP. Increases in mRNA levels of glucose transporters types 1 and 3 in Ehrlich ascites tumor cells during tumor development. J Cell Biochem 1997; 67:131-5. [PMID: 9328846 DOI: 10.1002/(sici)1097-4644(19971001)67:1<131::aid-jcb13>3.0.co;2-k] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A common feature of many tumors is an increase in glucose catabolism during tumor growth. We studied the mechanism of this phenomenon by using Ehrlich ascites tumor bearing mice as the animal model. We found that Ehrlich ascites tumor cells possess only glucose transporter 1 (GLUT1) and GLUT3 but not GLUT2, GLUT4, or GLUT5. The mRNA levels of GLUT1 and GLUT3 increased progressively in the tumour during development; however, there were no changes observable in mRNA levels of glucose transporters of all types in brain, liver, and heart of the host mice. These findings suggest that Ehrlich ascites tumor augments its glucose transport mechanism relative to other tissues in response to its unique growth needs.
Collapse
Affiliation(s)
- K K Au
- Department of Biochemistry, Chinese University of Hong Kong, Shatin, N.T., China
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Litman T, Nielsen D, Skovsgaard T, Zeuthen T, Stein WD. ATPase activity of P-glycoprotein related to emergence of drug resistance in Ehrlich ascites tumor cell lines. Biochim Biophys Acta 1997; 1361:147-58. [PMID: 9300796 DOI: 10.1016/s0925-4439(97)00025-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We have characterized the ATPase activity of a sensitive and five progressively daunorubicin resistant Ehrlich ascites tumor cell lines passaged in mice. For the nine different modulators of drug resistance that we have studied, the ATPase activity first rose with the modulator concentration and then declined. We analyzed the ATPase activity profiles in terms of an activation constant and an inhibition constant for each of the nine drugs and six cell lines. In this series of cell lines, the drug-stimulatable ATPase activity was directly proportional to the amount of P-glycoprotein. Pumping of daunorubicin was also correlated with the amount of P-glycoprotein, except that, for a highly passaged line more daunorubicin was pumped than could be accounted for by the content of P-glycoprotein. Between the 12th and the 36th passage an additional source of resistance emerged, which was not correlated with P-glycoprotein. Pumping of daunorubicin was negatively correlated with the cell volume for the different lines.
Collapse
Affiliation(s)
- T Litman
- Department of Oncology, Herlev Hospital, University of Copenhagen, Denmark.
| | | | | | | | | |
Collapse
|
46
|
Novikov VV, Shvetsov IP, Fesenko EE, Novikova NI. [Molecular mechanisms of biological action of low magnetic fields. I. Stability of chromatin from Ehrlich ascite carcinoma and mouse brain cells to the treatment of DNase 1 under combined action of low constant and alternating low-frequency magnetic fields adjusted to the cyclotron resonance of ions of polar amino acids]. Biofizika 1997; 42:733-7. [PMID: 9296635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
47
|
Kadoi K, Kamata H, Morita M. Viral susceptibility of a newly established cell line derived from the peritoneal cavity of BALB/C mouse. New Microbiol 1997; 20:149-54. [PMID: 9208425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Viral susceptibility of a newly established cell line, named KMP, derived from the peritoneal cavity of BALB/C mouse is described. The cells were originally cloned from the in vitro culture of ascites of the mouse injected with Ehrlich ascitic tumor cells in advance. The electrophoretic pattern of cellular DNAs, extracted from KMP, normal BALB/C mouse spleen, and Ehrlich tumor cells respectively were compared after triple digestions with restriction endonucleases. This cell line was proved to be of mouse origin, but not the sub-line of Ehrlich tumor cells. The strains of Coxsackie virus B group, swine enterovirus, influenza virus, encephalomyocarditis virus, vesicular stomatitis virus, and Aujeszky's disease virus were able to multiply well in the cell line with considerably high infectious titers in showing clear CPE and circular plaques.
Collapse
Affiliation(s)
- K Kadoi
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | | | | |
Collapse
|
48
|
Vandelaer M, Thiry M, Goessens G. Isolation of nucleoli from ELT cells: a quick new method that preserves morphological integrity and high transcriptional activity. Exp Cell Res 1996; 228:125-31. [PMID: 8892979 DOI: 10.1006/excr.1996.0307] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We have developed a quick new method for isolating nucleoli which, unlike the methods in current use, preserves the nucleolar ultrastructure. Until now, the isolation process has generally been assumed to empty one of the three major compartments of the nucleolus, the fibrillar center, of its content. We have used the AgNOR staining and in vitro transcription assay to test the degree of structural and functional preservation of the isolated nucleoli. Our results demonstrate the value of our procedure as a reliable tool for biochemical and ultrastructural studies on the nucleolus. Moreover, these proprieties prompt us to investigate the rRNA synthesis, using a nonisotopic approach, within morphologically intact isolated nucleoli. Thus, we show that newly synthesized rRNA transcripts are located not only in the dense fibrillar component, but also indubitably in the fibrillar center.
Collapse
Affiliation(s)
- M Vandelaer
- Laboratory of Cell and Tissue Biology, Faculty of Sciences, University of Liège, Belgium.
| | | | | |
Collapse
|
49
|
Bliukhterova NV, Smotriaeva MA, Krugliakova KE. [A comparative study of the action of 1-methyl-1-nitrosourea and 1,3-dimethyl-1-nitrosourea on tumor cell DNA in vitro and in vivo by the alkaline elution method]. Izv Akad Nauk Ser Biol 1996:276-281. [PMID: 8755027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
DNA damage of the tumor cells was studied by the method of alkali elution from filters after introduction of 1-methyl-1-nitrosourea (MNU) and 1,3-dimethyl-1-nitrosourea (DMNU) to mice with Ehrlich ascites carcinoma or after treatment of the cultivated cells with these drugs. DNA was essay fluorometrically using DAPI. The degree of DNA damage was characterized by the constant of the alkali elution rate (Kae), which was estimated according to the anamorphism of the kinetic curves of elution. It was shown that in the case of MNU application the tumor cell DNA was damaged to a greater extent than in the case of DMNU application. Kae increased with the concentration of drugs. A correlation was established between the antitumor activity of the drug (kappa), K(ae), and the number of chromosome defects per cell (gaps, deletions, microfragments, ring chromosomes, and translocations). This suggests that kappa is due both to DNA damage and chromosome defects.
Collapse
|
50
|
Toniato E, Flati V, Cifone MG, Del Grosso E, Roncaioli P, Cilenti L, Tessitore A, Lista F, Frati L, Gulino A, Martinotti S. Involvement of an arachidonic-acid-dependent pathway in the interferon-beta-mediated expression of C202 gene in Ehrlich-ascites-tumor cells. Eur J Biochem 1996; 235:91-6. [PMID: 8631372 DOI: 10.1111/j.1432-1033.1996.00091.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We have investigated the signal transduction mechanism of the expression of the C202 gene mediated by interferon beta (IFN-beta) in the murine Ehrlich's ascites tumor cell line. We have shown that treatment of cells with IFN-beta transiently enhances within minutes the release of free arachidonic acid through membrane phospholipase activity. Furthermore, prior treatment with either p-bromophenacyl bromide, an antagonist of both cytosolic and secretory phospholipase A2, or neomycin, which blocks phospholipase C activity, significantly decreased the activation of the murine IFN-beta-inducible gene, C202. Moreover, an increase of the expression of the C202 gene was observed after blocking of both the cyclooxygenase and lipoxygenase pathways. This suggests that further metabolism of arachidonic acid to epoxides via epoxygenase-catalysed pathways may be a mechanism by which second messengers for IFN-beta-mediated effects on C202 gene expression are generated. Taken together, these results indicate that lipids as second messengers may be important mediators in the IFN-beta-based activation of C202 gene expression.
Collapse
Affiliation(s)
- E Toniato
- Department of Experimental Medicine, University of L'Aquila, Italy
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|