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Darphin X, Moor J, da Silva CE, Richters A, Özdemir BC. Awareness of the impact of sex and gender in the disease risk and outcomes in hematology and medical oncology-a survey of Swiss clinicians. Cancer Rep (Hoboken) 2024; 7:e1961. [PMID: 38258483 PMCID: PMC10849995 DOI: 10.1002/cnr2.1961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/19/2023] [Accepted: 12/04/2023] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Although male and female cancer patients are distinct in many ways, there is a limited understanding in the differences between male and female biology and differing pharmacokinetic responses to cancer drugs. In fact, sex and gender are currently not considered in most treatment decisions in the fields of oncology and hematology. The lack of knowledge about potential sex differences in both disciplines may lead to differences in treatment efficacy, toxicity, and the overall survival (OS) of patients. AIM To evaluate their awareness about sex and gender in clinical practice we surveyed Swiss hematologists and oncologists from September to November 2022. METHODS We collected data about the clinical knowledge, experimental research, palliative care, quality of life, as well as the participant perception of the importance of sex and gender. We identified 767 eligible clinicians, of whom 150 completed the survey (20% response rate). RESULTS While most participants agreed that sex and gender were relevant when treating patients, it became clear that fewer participants knew about sex and gender differences in treatment toxicity and survival, which in turn would affect the treatment of their patients. Most participants agreed that this topic should be integrated into continuing education and research. CONCLUSION Our findings indicate the need for more awareness and training on sex and gender in cancer research and clinical care among oncologists and hematologists. Ideally, by better educating medical students and health professionals, a demand is created for improving research policies, publications and therefore patient care.
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Affiliation(s)
- Xenia Darphin
- Department of HematologySpital LimmattalSchlierenSwitzerland
| | - Jeanne Moor
- Department of Internal MedicineBern University HospitalBernSwitzerland
| | | | - Anke Richters
- Department of Research and DevelopmentThe Netherlands Comprehensive Cancer OrganisationUtrechtThe Netherlands
| | - Berna C. Özdemir
- Department of Medical OncologyBern University HospitalBernSwitzerland
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2
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An alternative technique for cyclization synthesis, in vitro anti-esophageal cancer evaluation, and molecular docking of novel thiazolidin-4-one derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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3
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FitzGerald LI, Johnston AP. It’s what’s on the inside that counts: Techniques for investigating the uptake and recycling of nanoparticles and proteins in cells. J Colloid Interface Sci 2021; 587:64-78. [DOI: 10.1016/j.jcis.2020.11.076] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/15/2020] [Accepted: 11/23/2020] [Indexed: 01/19/2023]
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Recombinant human lactoferrin induces apoptosis, disruption of F-actin structure and cell cycle arrest with selective cytotoxicity on human triple negative breast cancer cells. Apoptosis 2020; 24:562-577. [PMID: 30941553 DOI: 10.1007/s10495-019-01539-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Breast cancer is the most frequently diagnosed cancer among women worldwide. Here, recombinant human lactoferrin (rhLf) expressed in Pichia pastoris was tested for its potential cytotoxic activity on a panel of six human breast cancer cell lines. The rhLf cytotoxic effect was determined via a live-cell HTS imaging assay. Also, confocal microscopy and flow cytometry protocols were employed to investigate the rhLf mode of action. The rhLf revealed an effective CC50 of 91.4 and 109.46 µg/ml on non-metastatic and metastatic MDA-MB-231 cells, with favorable selective cytotoxicity index values, 11.68 and 13.99, respectively. Moreover, rhLf displayed satisfactory SCI values on four additional cell lines, MDA-MB-468, HCC70, MCF-7 and T-47D (1.55-3.34). Also, rhLf provoked plasma membrane blebbing, chromatin condensation and cell shrinkage in MDA-MB-231 cells, being all three apoptosis-related morphological changes. Also, rhLf was able to shrink the microfilaments, forming a punctuated cytoplasmic pattern in both the MDA-MB-231 and Hs-27 cells, as visualized in confocal photomicrographs. Moreover, performing flow cytometric analysis, rhLf provoked significant phosphatidylserine externalization, cell cycle arrest in the S phase and apoptosis-induced DNA fragmentation in MDA-MB-231 cells. Hence, rhLf possesses selective cytotoxicity on breast cancer cells. Also, rhLf caused apoptosis-associated morphologic changes, disruption of F-actin cytoskeleton organization, phosphatidylserine externalization, DNA fragmentation, and arrest of the cell cycle progression on triple-negative breast cancer MDA-MB-231 cells. Overall results suggest that rhLf is using the apoptosis pathway as its mechanism to inflict cell death. Findings warranty further evaluation of rhLf as a potential anti-breast cancer drug option.
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Shah R, Singh SJ, Eddy K, Filipp FV, Chen S. Concurrent Targeting of Glutaminolysis and Metabotropic Glutamate Receptor 1 (GRM1) Reduces Glutamate Bioavailability in GRM1 + Melanoma. Cancer Res 2019; 79:1799-1809. [PMID: 30987979 PMCID: PMC6469683 DOI: 10.1158/0008-5472.can-18-1500] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 12/15/2018] [Accepted: 02/21/2019] [Indexed: 12/31/2022]
Abstract
Aberrant glutamatergic signaling has been implicated in altered metabolic activity in many cancer types, including malignant melanoma. Previously, we have illustrated the role of metabotropic glutamate receptor 1 (GRM1) in neoplastic transformation of melanocytes in vitro and spontaneous metastatic melanoma in vivo. In this study, we showed that autocrine stimulation constitutively activates the GRM1 receptor and its downstream mitogenic signaling. GRM1-activated (GRM1+) melanomas exhibited significantly increased expression of glutaminase (GLS), which catalyzes the first step in the conversion of glutamine to glutamate. In cultured GRM1+ melanoma cell lines, CB-839, a potent, selective, and orally bioavailable inhibitor of GLS, suppressed cell proliferation, while riluzole, an inhibitor of glutamate release, promoted apoptotic cell death in vitro and in vivo. Combined treatment with CB-839 and riluzole treatment proved to be superior to single-agent treatment, restricting glutamate bioavailability and leading to effective suppression of tumor cell proliferation in vitro and tumor progression in vivo. Hyperactivation of GRM1 in malignant melanoma is an oncogenic driver, which acts independently of canonical melanoma proto-oncogenes, BRAF or NRAS. Overall, these results indicate that expression of GRM1 promotes a metabolic phenotype that supports increased glutamate production and autocrine glutamatergic signaling, which can be pharmacologically targeted by decreasing glutamate bioavailability and the GLS-dependent glutamine to glutamate conversion. SIGNIFICANCE: These findings demonstrate that targeting glutaminolytic glutamate bioavailability is an effective therapeutic strategy for GRM1-activated tumors.
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Affiliation(s)
- Raj Shah
- Susan Lehman Cullman Laboratory for Cancer Research, Ernest Mario School of Pharmacy, Department of Chemical Biology, Rutgers University, Piscataway, New Jersey
- Joint Graduate Program in Toxicology, Rutgers University, Piscataway, New Jersey
| | - Simar J Singh
- St. George's University, School of Medicine, Grenada, West Indies
| | - Kevinn Eddy
- Susan Lehman Cullman Laboratory for Cancer Research, Ernest Mario School of Pharmacy, Department of Chemical Biology, Rutgers University, Piscataway, New Jersey
| | - Fabian V Filipp
- Cancer Systems Biology, Institute of Computational Biology, Helmholtz Zentrum München, München, Germany.
- School of Life Sciences Weihenstephan, Technical University München, Freising, Germany
| | - Suzie Chen
- Susan Lehman Cullman Laboratory for Cancer Research, Ernest Mario School of Pharmacy, Department of Chemical Biology, Rutgers University, Piscataway, New Jersey.
- Joint Graduate Program in Toxicology, Rutgers University, Piscataway, New Jersey
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
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6
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Green barley mitigates cytotoxicity in human lymphocytes undergoing aggressive oxidative stress, via activation of both the Lyn/PI3K/Akt and MAPK/ERK pathways. Sci Rep 2019; 9:6005. [PMID: 30979953 PMCID: PMC6461650 DOI: 10.1038/s41598-019-42228-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 03/19/2019] [Indexed: 02/06/2023] Open
Abstract
Oxidative stress plays a critical role in numerous diseases. Therefore, the pursuit of compounds with antioxidant activity remains critical. Green barley young leaves aqueous extract (GB) was tested for its capacity to ameliorate cellular oxidative stress, and its potential cytoprotective mechanism was partially elucidated. Through Folin-Ciocalteau and 1,1-diphenyl-2-picrylhydrazyl (DPPH) colorimetric assays, GB total phenolic content and free radical scavenging activity were found to be 59.91 ± 2.17 mg/L and 110.75 µg/ml (IC50), respectively. Using a live cell-based propidium iodide dye exclusion assay and flow cytometry, GB was found to display significant cytoprotection activity on three human lymphocytic cell lines exposed to an aggressive H2O2-induced oxidative stress. The molecular mechanism for GB cytoprotection activity was assessed via bead-based xMAP technology on the Luminex platform and western blot analysis. GB treatment resulted in activation of Lyn, Akt, and ERK1/2, suggesting that GB is able to mitigate the H2O2-induced oxidative stress via activation of both the Lyn/PI3K/Akt and ERK/MAPK pathways. Our findings support the notion that GB extract has the potential to be a valuable therapeutic agent and may serve to establish a strategy to discover potential compound(s) or biological extracts/mixtures to be incorporated as a treatment to prevent oxidative stress-related diseases.
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Wahlang B. Exposure to persistent organic pollutants: impact on women's health. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:331-348. [PMID: 30110273 DOI: 10.1515/reveh-2018-0018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 07/18/2018] [Indexed: 05/23/2023]
Abstract
This literature review focuses on the causal relationship between persistent organic pollutants (POPs) exposure and women's health disorders, particularly cancer, cardio-metabolic events and reproductive health. Progressive industrialization has resulted in the production of a multitude of chemicals that are released into the environment on a daily basis. Environmental chemicals or pollutants are not only hazardous to our ecosystem but also lead to various health problems that affect the human population worldwide irrespective of gender, race or age. However, most environmental health studies that have been conducted, until recently, were exclusively biased with regard to sex and gender, beginning with exposure studies that were reported mostly in male, occupational workers and animal studies being carried out mostly in male rodent models. Health-related issues pertaining to women of all age groups have not been studied thoroughly and rather disregarded in most aspects of basic health science research and it is therefore pertinent that we address these limitations in environmental health. The review also addresses studies looking at the associations between health outcomes and exposures to POPs, particularly, polychlorinated biphenyls (PCBs), dioxins and pesticides, reported in cohort studies while accounting for gender differences. Considering that current levels of POPs in women can also impact future generations, informative guidelines related to dietary patterns and exposure history are needed for women of reproductive age. Additionally, occupational cohorts of highly exposed women worldwide, such as women working in manufacturing plants and female pesticide applicators are required to gather more information on population susceptibility and disease pathology.
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Affiliation(s)
- Banrida Wahlang
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, 505 S. Hancock Street, CTRB, Louisville, KY 40202-1617, USA
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Contreras L, Calderon RI, Varela-Ramirez A, Zhang HY, Quan Y, Das U, Dimmock JR, Skouta R, Aguilera RJ. Induction of apoptosis via proteasome inhibition in leukemia/lymphoma cells by two potent piperidones. Cell Oncol (Dordr) 2018; 41:623-636. [PMID: 30088262 PMCID: PMC6241245 DOI: 10.1007/s13402-018-0397-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2018] [Indexed: 01/12/2023] Open
Abstract
PURPOSE Previously, compounds containing a piperidone structure have been shown to be highly cytotoxic to cancer cells. Recently, we found that the piperidone compound P2 exhibits a potent anti-neoplastic activity against human breast cancer-derived cells. Here, we aimed to evaluate two piperidone compounds, P1 and P2, for their potential anti-neoplastic activity against human leukemia/lymphoma-derived cells. METHODS Cytotoxicity and apoptosis induction were evaluated using MTS, annexin V-FITC/PI and mitochondrial membrane potential polychromatic assays to confirm the mode of action of the piperidone compounds. The effects of compound P1 and P2 treatment on gene expression were assessed using AmpliSeq analysis and, subsequently, confirmed by RT-qPCR and Western blotting. RESULTS We found that the two related piperidone compounds P1 and P2 selectively killed the leukemia/lymphoma cells tested at nanomolar concentrations through induction of the intrinsic apoptotic pathway, as demonstrated by mitochondrial depolarization and caspase-3 activation. AmpliSeq-based transcriptome analyses of the effects of compounds P1 and P2 on HL-60 acute leukemia cells revealed a differential expression of hundreds of genes, 358 of which were found to be affected by both. Additional pathway analyses revealed that a significant number of the common genes were related to the unfolded protein response, implying a possible role of the two compounds in the induction of proteotoxic stress. Subsequent analyses of the transcriptome data revealed that P1 and P2 induced similar gene expression alterations as other well-known proteasome inhibitors. Finally, we found that Noxa, an important mediator of the activity of proteasome inhibitors, was significantly upregulated at both the mRNA and protein levels, indicating a possible role in the cytotoxic mechanism induced by P1 and P2. CONCLUSIONS Our data indicate that the cytotoxic activity of P1 and P2 on leukemia/lymphoma cells is mediated by proteasome inhibition, leading to activation of pro-apoptotic pathways.
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Affiliation(s)
- Lisett Contreras
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Ruben I Calderon
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Armando Varela-Ramirez
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Hong-Yu Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Yuan Quan
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Umashankar Das
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, S7N 5E5, Canada
| | - Jonathan R Dimmock
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, S7N 5E5, Canada
| | - Rachid Skouta
- Department of Chemistry, Border Biomedical Research Center, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
- Department of Biology, University of Massachusetts, Amherst, MA, 01003-9297, USA
| | - Renato J Aguilera
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA.
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Villanueva PJ, Martinez A, Baca ST, DeJesus RE, Larragoity M, Contreras L, Gutierrez DA, Varela-Ramirez A, Aguilera RJ. Pyronaridine exerts potent cytotoxicity on human breast and hematological cancer cells through induction of apoptosis. PLoS One 2018; 13:e0206467. [PMID: 30395606 PMCID: PMC6218039 DOI: 10.1371/journal.pone.0206467] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/12/2018] [Indexed: 11/30/2022] Open
Abstract
The potent antimalarial drug pyronaridine (PND) was tested for its potential as an anticancer drug. After exposing cancerous (17) and non-cancerous (2) cells to PND for 72 hr, PND was found to exhibit consistent and potent cytotoxic activity at low micromolar (μM) concentrations that ranged from 1.6 μM to 9.4 μM. Moreover, PND exerted a significant selective cytotoxicity index (SCI) on five out of seven breast cancer cell lines tested, with favorable values of 2.5 to 4.4, as compared with the non-cancerous breast MCF-10A cell line. By using the same comparison, PND exhibited a significant SCI on three out of four leukemia/lymphoma cell lines with promising values of 3.3 to 3.5. One breast cancer and one leukemia cell line were tested further in order to determine the likely mode of action of PND. PND was found to consistently elicit phosphatidylserine externalization, mitochondrial depolarization, and DNA fragmentation, in both the triple negative MDA-MB-231 breast cancer and HL-60 leukemia cell lines. In addition, PND treatment altered cell cycle progression in both cancer cells. Subsequent DNA mobility-shift assays, UV-Visible spectroscopic titrations, and circular dichroism (CD) experiments revealed that PND intercalates with DNA. The findings presented in this study indicates that PND induces apoptosis and interfered with cell cycle progression of cancer cell lines and these results indicate that this drug has the potential as a repurposed drug for cancer therapy.
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Affiliation(s)
- Paulina J. Villanueva
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Alberto Martinez
- Chemistry Department, New York City College of Technology, The City University of New York, Brooklyn, New York, United States of America
| | - Sarah T. Baca
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Rebecca E. DeJesus
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Manuel Larragoity
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Lisett Contreras
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Denisse A. Gutierrez
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Armando Varela-Ramirez
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
| | - Renato J. Aguilera
- The Cytometry, Screening and Imaging Core Facility & Border Biomedical Research Center & Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, United States of America
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Segarra I, Modamio P, Fernández C, Mariño EL. Sex-Divergent Clinical Outcomes and Precision Medicine: An Important New Role for Institutional Review Boards and Research Ethics Committees. Front Pharmacol 2017; 8:488. [PMID: 28785221 PMCID: PMC5519571 DOI: 10.3389/fphar.2017.00488] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/10/2017] [Indexed: 12/22/2022] Open
Abstract
The efforts toward individualized medicine have constantly increased in an attempt to improve treatment options. These efforts have led to the development of small molecules which target specific molecular pathways involved in cancer progression. We have reviewed preclinical studies of sunitinib that incorporate sex as a covariate to explore possible sex-based differences in pharmacokinetics and drug–drug interactions (DDI) to attempt a relationship with published clinical outputs. We observed that covariate sex is lacking in most clinical outcome reports and suggest a series of ethic-based proposals to improve research activities and identify relevant different sex outcomes. We propose a deeper integration of preclinical, clinical, and translational research addressing statistical and clinical significance jointly; to embed specific sex-divergent endpoints to evaluate possible gender differences objectively during all stages of research; to pay greater attention to sex-divergent outcomes in polypharmacy scenarios, DDI and bioequivalence studies; the clear reporting of preclinical and clinical findings regarding sex-divergent outcomes; as well as to encourage the active role of scientists and the pharmaceutical industry to foster a new scientific culture through their research programs, practice, and participation in editorial boards and Institutional Ethics Review Boards (IRBs) and Research Ethics Committees (RECs). We establish the IRB/REC as the centerpiece for the implementation of these proposals. We suggest the expansion of its competence to follow up clinical trials to ensure that sex differences are addressed and recognized; to engage in data monitoring committees to improve clinical research cooperation and ethically address those potential clinical outcome differences between male and female patients to analyze their social and clinical implications in research and healthcare policies.
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Affiliation(s)
- Ignacio Segarra
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
| | - Pilar Modamio
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
| | - Cecilia Fernández
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
| | - Eduardo L Mariño
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
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Iniguez E, Varela-Ramirez A, Martínez A, Torres CL, Sánchez-Delgado RA, Maldonado RA. Ruthenium-Clotrimazole complex has significant efficacy in the murine model of cutaneous leishmaniasis. Acta Trop 2016; 164:402-410. [PMID: 27693373 DOI: 10.1016/j.actatropica.2016.09.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 09/08/2016] [Accepted: 09/29/2016] [Indexed: 01/09/2023]
Abstract
In previous studies we reported a novel series of organometallic compounds, RuII complexed with clotrimazole, displaying potent trypanosomatid activity with unnoticeable toxicity toward normal mammalian cells. In view of the promising activity of Ru-clotrimazole complexes against Leishmania major (L. major), the present work sought to investigate the anti-leishmanial activity of the AM162 complex in the murine model of cutaneous leishmaniasis. In addition, to facilitate the design of new therapeutic strategies against this disease, we investigated the mode of action of two Ru-clotrimazole complexes in L. major promastigotes. Overall, we demonstrate that AM162 significantly reduced the lesion size in mice exposed to L. major infection. In addition, Ru-clotrimazole compounds are able to induce a mitochondrial dependent apoptotic-like death in the extracellular form of the parasite based on labeling of DNA fragments, mitochondrial depolarization, cell cycle alteration profile and plasma membrane phospholipid externalization. Our findings reveal a promising efficacy of the Ru-clotrimazole AM162 complex for the treatment of cutaneous leishmaniasis, as well as pro-apoptotic activity and thus guarantees further evaluation in pre-clinical studies.
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Affiliation(s)
- Eva Iniguez
- Border Biomedical Research Center, Bioscience Research Building, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, USA
| | - Armando Varela-Ramirez
- Border Biomedical Research Center, Bioscience Research Building, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, USA
| | - Alberto Martínez
- Chemistry Department, New York City College of Technology, The City University of New York, Brooklyn, NY, USA.
| | - Caresse L Torres
- Border Biomedical Research Center, Bioscience Research Building, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, USA
| | - Roberto A Sánchez-Delgado
- Chemistry Department, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, USA
| | - Rosa A Maldonado
- Border Biomedical Research Center, Bioscience Research Building, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, USA.
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12
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Santiago-Vázquez Y, Das U, Varela-Ramirez A, Baca ST, Ayala-Marin Y, Lema C, Das S, Baryyan A, Dimmock JR, Aguilera RJ. Tumor-selective cytotoxicity of a novel pentadiene analogue on human leukemia/ lymphoma cells. ACTA ACUST UNITED AC 2016; 3:138-146. [PMID: 27857884 DOI: 10.2174/2212697x03666160830165250] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND A novel series of structurally divergent 1,5-diaryl-3-oxo-1,4-pentadiene analogues 1-10 displayed marked cytotoxic potencies towards a number of human leukemia/lymphoma cells. OBJECTIVE To identify novel selective cytotoxic compounds that induce apoptosis. METHODS The Differential Nuclear Staining (DNS) screening protocol was utilized to measure the cytotoxicity of all experimental dienones on several cancerous cells. Additionally, the selective cytotoxicity index was calculated by comparing the dienone's cytotoxicity between leukemia/lymphoma cells vs. non-cancerous cells. Furthermore, to discern whether a selected dienone induced cell death via apoptosis or necrosis on T-lymphocyte leukemia cells, diverse approaches were utilized to detect individual biochemical facets of apoptosis. RESULTS The dienones were tested for their anti-neoplastic efficiency on human leukemia/lymphoma-derived cell lines. Special emphasis was applied on dienone 1, on the basis of its sub-micromolar cytotoxicity (CC50=0.43+0.02 μM) and high selective cytotoxicity index (11.1) exerted on T-leukemia cells. In general, dienone 1 showed the most potent cytotoxic properties as compared to other dienones and a related reference cytotoxin curcumin as well as the EF-24 curcumin analogue. Dienone 1 caused cell death by apoptosis in Jurkat cells as evidenced by inducing phosphatidylserine externalization, mitochondrial depolarization and caspase-3/7. These effects were mainly attributed to the induction of apoptotic pathways. CONCLUSION The novel dienone 1 was found to exhibit potent anti-leukemia activity by inducing programmed cell death/apoptosis. Consequently, dionone 1 should be developed further to examine its potential efficacy to combat malignancies in a pre-clinical animal model.
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Affiliation(s)
- Yahaira Santiago-Vázquez
- Department of Biological Sciences, Bioscience Research Building, Border Biomedical Research Center, Cytometry, Screening and Imaging Core Facility, University of Texas at El Paso, Texas, 79968, USA
| | - Umashankar Das
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5C9, Canada
| | - Armando Varela-Ramirez
- Department of Biological Sciences, Bioscience Research Building, Border Biomedical Research Center, Cytometry, Screening and Imaging Core Facility, University of Texas at El Paso, Texas, 79968, USA
| | - Sarah T Baca
- Department of Biological Sciences, Bioscience Research Building, Border Biomedical Research Center, Cytometry, Screening and Imaging Core Facility, University of Texas at El Paso, Texas, 79968, USA
| | - Yoshira Ayala-Marin
- Department of Biological Sciences, Bioscience Research Building, Border Biomedical Research Center, Cytometry, Screening and Imaging Core Facility, University of Texas at El Paso, Texas, 79968, USA
| | - Carolina Lema
- Department of Biological Sciences, Bioscience Research Building, Border Biomedical Research Center, Cytometry, Screening and Imaging Core Facility, University of Texas at El Paso, Texas, 79968, USA; College of Optometry, University of Houston, 4901 Calhoun Road, Houston, TX, 77204, USA
| | - Swagatika Das
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5C9, Canada
| | - Alaa Baryyan
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5C9, Canada
| | - Jonathan R Dimmock
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5C9, Canada
| | - Renato J Aguilera
- Department of Biological Sciences, Bioscience Research Building, Border Biomedical Research Center, Cytometry, Screening and Imaging Core Facility, University of Texas at El Paso, Texas, 79968, USA
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Segarra I, Modamio P, Fernández C, Mariño EL. Sunitinib Possible Sex-Divergent Therapeutic Outcomes. Clin Drug Investig 2016; 36:791-9. [PMID: 27318944 DOI: 10.1007/s40261-016-0428-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Sunitinib is a tyrosine kinase inhibitor used for the treatment of renal cell carcinoma and metastatic brain tumors. Preclinical pharmacokinetic studies have shown higher sunitinib hepatic and brain exposure in female mice and higher sunitinib kidney concentrations in male mice. We explored whether sex-divergent tissue pharmacokinetics may anticipate sex-divergent therapeutic and toxicology responses in male and female patients. The review of the available scientific literature identified case reports, case series reports, clinical trials, and other studies associating sex with sunitinib outcomes. The results suggest male patients may respond better to renal cell carcinoma treatment and female patients may have better brain tumor treatment outcomes but a higher incidence of adverse events. Although more high-quality evidence is needed, these results, as anticipated by the preclinical data, may indicate possible sunitinib sex-divergent therapeutic outcomes in patients. In addition, we propose the systematic analysis of sex-based outcomes in clinical trial reports and their inclusion and review in the ethics committees and review boards to prevent, amongst others, patient burden in upcoming clinical trials.
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Affiliation(s)
- Ignacio Segarra
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Barcelona, Avn. Joan XXIII, s/n, Barcelona, 08028, Spain.
| | - Pilar Modamio
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Barcelona, Avn. Joan XXIII, s/n, Barcelona, 08028, Spain
| | - Cecilia Fernández
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Barcelona, Avn. Joan XXIII, s/n, Barcelona, 08028, Spain
| | - Eduardo L Mariño
- Clinical Pharmacy and Pharmacotherapy Unit, Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Barcelona, Avn. Joan XXIII, s/n, Barcelona, 08028, Spain
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14
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Weighted gene co-expression network analysis reveals key genes involved in pancreatic ductal adenocarcinoma development. Cell Oncol (Dordr) 2016; 39:379-88. [PMID: 27240826 DOI: 10.1007/s13402-016-0283-7] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2016] [Indexed: 12/29/2022] Open
Abstract
PURPOSE Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive malignancy. Up till now, the patient's prognosis remains poor which, among others, is due to the paucity of reliable early diagnostic biomarkers. In the past, candidate diagnostic biomarkers and therapeutic targets have been delineated from genes that were found to be differentially expressed in normal versus tumour samples. Recently, new systems biology approaches have been developed to analyse gene expression data, which may yield new biomarkers. As of yet, the weighted gene co-expression network analysis (WGCNA) tool has not been applied to PDAC microarray-based gene expression data. METHODS PDAC microarray-based gene expression datasets, listed in the Gene Expression Omnibus (GEO) database, were analysed. After pre-processing of the data, we built two final datasets, Normal and PDAC, encompassing 104 and 129 patient samples, respectively. Next, we constructed a weighted gene co-expression network and identified modules of co-expressed genes distinguishing normal from disease conditions. Functional annotations of the genes in these modules were carried out to highlight PDAC-associated molecular pathways and common regulatory mechanisms. Finally, overall survival analyses were carried out to assess the suitability of the genes identified as prognostic biomarkers. RESULTS Using WGCNA, we identified several key genes that may play important roles in PDAC. These genes are mainly related to either endoplasmic reticulum, mitochondrion or membrane functions, exhibit transferase or hydrolase activities and are involved in biological processes such as lipid metabolism or transmembrane transport. As a validation of the applied method, we found that some of the identified key genes (CEACAM1, MCU, VDAC1, CYCS, C15ORF52, TMEM51, LARP1 and ERLIN2) have previously been reported by others as potential PDAC biomarkers. Using overall survival analyses, we found that several of the newly identified genes may serve as biomarkers to stratify PDAC patients into low- and high-risk groups. CONCLUSIONS Using this new systems biology approach, we identified several genes that appear to be critical to PDAC development. As such, they may represent potential diagnostic biomarkers as well as therapeutic targets with clinical utility.
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15
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Nunes LM, Hossain M, Varela-Ramirez A, DAS U, Ayala-Marin YM, Dimmock JR, Aguilera RJ. A novel class of piperidones exhibit potent, selective and pro-apoptotic anti-leukemia properties. Oncol Lett 2016; 11:3842-3848. [PMID: 27313705 DOI: 10.3892/ol.2016.4480] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 12/15/2015] [Indexed: 12/11/2022] Open
Abstract
In the present pre-clinical study, a series of 1-[3-(2-methoxyethylthio)-propionyl]-3,5- bis(benzylidene)-4 piperidones and structurally-related compounds were observed to be cytotoxic in vitro to three human leukemia cell lines, namely Nalm-6, CEM and Jurkat. The 50% cytotoxic concentration (CC50) values of the three cell lines ranged between 0.9-126.4 µM and 0.3-11.7 µM at 24 and 48 h subsequent to exposure, respectively. The two lead compounds with sub-micromolar CC50 concentrations, 1-(2-methoxyethylthio-propionyl)-3,5-bis(benzylidene)-4 piperidone (2a) and 3,5-bis(4-fluorobenzylidene)-1-[3-(2-methoxyethyl sulfinyl)-propionyl]-4-piperidone (3e), were selected for additional analyses. Several strategies were undertaken to determine whether the above piperidones caused cell death via apoptosis or necrosis on T-lymphocyte leukemia Jurkat cells. The results revealed that the two piperidones caused phosphatidylserine externalization, mitochondrial depolarization and activation of caspase-3, which are all biochemical hallmarks of apoptosis. In addition, the selected piperidones displayed selective cytotoxicity towards leukemia cells, and were less toxic in non-cancerous control cells. Therefore, the findings of the present study revealed that the novel piperidones 2a and 3e exert a selective cytotoxic effect on lymphocyte leukemia cells by favoring the activation of the intrinsic/mitochondrial apoptotic pathway.
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Affiliation(s)
- Larissa M Nunes
- Cytometry, Imaging and Screening Core Facility, Border Biomedical Research Center, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX 79968-0519, USA
| | - Mohammad Hossain
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
| | - Armando Varela-Ramirez
- Cytometry, Imaging and Screening Core Facility, Border Biomedical Research Center, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX 79968-0519, USA
| | - Umashankar DAS
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
| | - Yoshira M Ayala-Marin
- Cytometry, Imaging and Screening Core Facility, Border Biomedical Research Center, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX 79968-0519, USA
| | - Jonathan R Dimmock
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
| | - Renato J Aguilera
- Cytometry, Imaging and Screening Core Facility, Border Biomedical Research Center, Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX 79968-0519, USA
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16
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Robles-Escajeda E, Das U, Ortega NM, Parra K, Francia G, Dimmock JR, Varela-Ramirez A, Aguilera RJ. A novel curcumin-like dienone induces apoptosis in triple-negative breast cancer cells. Cell Oncol (Dordr) 2016; 39:265-77. [PMID: 26920032 DOI: 10.1007/s13402-016-0272-x] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2016] [Indexed: 12/31/2022] Open
Abstract
PURPOSE According to the World Health Organization (WHO), breast cancer is the most common cancer affecting women worldwide. In the USA ~12.3 % of all women are expected to be diagnosed with various types of breast cancer, exhibiting varying degrees of therapeutic response rates. Therefore, the identification of novel anti-breast cancer drugs is of paramount importance. METHODS The 1,5-diaryl-3-oxo-1,4-pentadienyl pharmacophore was incorporated into a number of cytotoxins. Three of the resulting dienones, 2a, 2b and 2c, were tested for their anti-neoplastic potencies in a variety of human breast cancer-derived cell lines, including the triple negative MDA-MB-231 cell line and its metastatic variant, using a live-cell bio-imaging method. Special emphasis was put on dienone 2c, since its anti-cancer activity and its mode of inflicting cell death have so far not been reported. RESULTS We found that all three dienones exhibited potent cytotoxicities towards the breast cancer-derived cell lines tested, whereas significantly lower toxicities were observed towards the non-cancerous human breast cell line MCF-10A. The dienones 2b and 2c exhibited the greatest selective cytotoxicity at submicromolar concentration levels. We found that these two dienones induced phosphatidylserine externalization in MDA-MB-231 cells in a concentration-dependent manner, suggesting that their cytotoxic effect might be mediated by apoptosis. This possibility was confirmed by our observation that the dienone 2c can induce mitochondrial depolarization, caspase-3 activation, cell cycle disruption and DNA fragmentation in MDA-MB-231 cells. CONCLUSION Our findings indicate that dienone 2c uses the mitochondrial/intrinsic pathway to inflict apoptosis in triple negative MDA-MB-231 breast cancer-derived cells. This observation warrants further assessment of dienone 2c as a potential anti-breast cancer drug.
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Affiliation(s)
- Elisa Robles-Escajeda
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Umashankar Das
- Drug Discovery & Development Research Group, College of Pharmacy & Nutrition, University of Saskatchewan, 110 Science Place, Saskatoon, SK, S7N 5C9, Canada
| | - Nora M Ortega
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Karla Parra
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Giulio Francia
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA
| | - Jonathan R Dimmock
- Drug Discovery & Development Research Group, College of Pharmacy & Nutrition, University of Saskatchewan, 110 Science Place, Saskatoon, SK, S7N 5C9, Canada
| | - Armando Varela-Ramirez
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA.
| | - Renato J Aguilera
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, 500 West University Avenue, El Paso, TX, 79968-0519, USA.
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17
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Divergent Effects of Dioxin- or Non-Dioxin-Like Polychlorinated Biphenyls on the Apoptosis of Primary Cell Culture from the Mouse Pituitary Gland. PLoS One 2016; 11:e0146729. [PMID: 26752525 PMCID: PMC4709048 DOI: 10.1371/journal.pone.0146729] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/20/2015] [Indexed: 11/25/2022] Open
Abstract
Polychlorinated biphenyls (PCBs) can disrupt the endocrine function, promote neoplasms and regulate apoptosis in some tissues; however, it is unknown whether PCBs can affect the apoptosis of pituitary cells. The study evaluated the effect of PCBs on the apoptosis of normal pituitary cells and the underlying mechanisms. Primary cell cultures obtained from mouse pituitary glands were exposed to Aroclor 1254 or selected dioxin-like (PCB 77, PCB 126) or non-dioxin-like (PCB 153, PCB 180) congeners. Apoptosis was evaluated by Annexin V staining, DNA fragmentation, and TUNEL assay. Both the expression and activity of caspases were analyzed. Selective thyroid hormone receptor (TR) or aryl-hydrocarbon receptor (AhR) or CYP1A1 antagonist were used to explore the mechanisms underlying PCBs action. Our results showed that Aroclor 1254 induced the apoptosis of pituitary cells as well as the final caspase-3 level and activity through the extrinsic pathway, as shown by the increased caspase-8 level and activity. On the other hand, the intrinsic pathway evaluated by measuring caspase-9 expression was silent. The selected non-dioxin-like congeners either increased (PCB 180) or reduced (PCB 153) pituitary cell apoptosis, affecting the extrinsic pathway (PCB 180), or both the extrinsic and intrinsic pathways (PCB 153), respectively. In contrast, the dioxin-like congeners (PCB 77 and PCB 126) did not affect apoptosis. The anti-apoptotic phenotype of PCB 153 was counteracted by a TR or a CYP1A1 antagonist, whereas the pro-apoptotic effect of PCB 180 was counteracted by an AhR antagonist. The induced apoptosis of Aroclor 1254 or PCB 180 was associated with a reduction of cell proliferation, whereas the decreased apoptosis due to PCB 153 increased cell proliferation by 30%. In conclusion, our data suggest that non-dioxin-like PCBs may modulate apoptosis and the proliferation rate of pituitary cells that have either pro- or anti-apoptotic effects depending on the specific congeners. However, the impact of PCBs on the process of pituitary tumorigenesis remains to be elucidated.
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18
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Gonzalez H, Lema C, Kirken RA, Maldonado RA, Varela-Ramirez A, Aguilera RJ. Arsenic-exposed Keratinocytes Exhibit Differential microRNAs Expression Profile; Potential Implication of miR-21, miR-200a and miR-141 in Melanoma Pathway. ACTA ACUST UNITED AC 2015; 2:138-147. [PMID: 27054085 DOI: 10.2174/2212697x02666150629174704] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Long-term exposure to arsenic has been linked to cancer in different organs and tissues, including skin. Here, non-malignant human keratinocytes (HaCaT) were exposed to arsenic and its effects on microRNAs (miRNAs; miR) expression were analyzed via miRCURY LNA array analyses. A total of 30 miRNAs were found differentially expressed in arsenic-treated cells, as compared to untreated controls. Among the up-regulated miRNAs, miR-21, miR-200a and miR-141, are well known to be involved in carcinogenesis. Additional findings confirmed that those three miRNAs were indeed up-regulated in arsenic-stimulated keratinocytes as demonstrated by quantitative PCR assay. Furthermore, bioinformatics analysis of both potential cancer-related pathways and targeted genes affected by miR-21, miR-200a and/or miR-141 was performed. Results revealed that miR-21, miR-200a and miR-141 are implicated in skin carcinogenesis related with melanoma development. Conclusively, our results indicate that arsenic-treated keratinocytes exhibited alteration in the miRNAs expression profile and that miR-21, miR-200a and miR-141 could be promising early biomarkers of the epithelial phenotype of cancer cells and they could be potential novel targets for melanoma therapeutic interventions.
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Affiliation(s)
- Horacio Gonzalez
- Department of Biological Sciences, Border Biomedical Research Center, the University of Texas at El Paso, 500 West University Ave. El Paso, Texas, 79968, USA
| | - Carolina Lema
- Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, 79968, USA; College of Optometry, University of Houston, 4901 Calhoun Road, Houston, Texas, 77204, USA
| | - Robert A Kirken
- Department of Biological Sciences, Border Biomedical Research Center, the University of Texas at El Paso, 500 West University Ave. El Paso, Texas, 79968, USA
| | - Rosa A Maldonado
- Department of Biological Sciences, Border Biomedical Research Center, the University of Texas at El Paso, 500 West University Ave. El Paso, Texas, 79968, USA
| | - Armando Varela-Ramirez
- Department of Biological Sciences, Border Biomedical Research Center, the University of Texas at El Paso, 500 West University Ave. El Paso, Texas, 79968, USA; Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, 79968, USA
| | - Renato J Aguilera
- Department of Biological Sciences, Border Biomedical Research Center, the University of Texas at El Paso, 500 West University Ave. El Paso, Texas, 79968, USA; Cytometry, Screening and Imaging Core Facility, Border Biomedical Research Center, Department of Biological Sciences, the University of Texas at El Paso, El Paso, Texas, 79968, USA
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19
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Musa MA, Latinwo LM, Virgile C, Badisa VL, Gbadebo AJ. Synthesis and in vitro evaluation of 3-(4-nitrophenyl)coumarin derivatives in tumor cell lines. Bioorg Chem 2015; 58:96-103. [DOI: 10.1016/j.bioorg.2014.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 11/22/2014] [Accepted: 11/24/2014] [Indexed: 11/26/2022]
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20
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Li D, Wei L, Xu B, Yu D, Chang J, Yuan P, Du Z, Tan W, Shen H, Wu T, Wu C, Lin D. Association of GWAS-identified lung cancer susceptibility loci with survival length in patients with small-cell lung cancer treated with platinum-based chemotherapy. PLoS One 2014; 9:e113574. [PMID: 25415319 PMCID: PMC4240611 DOI: 10.1371/journal.pone.0113574] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 10/25/2014] [Indexed: 12/12/2022] Open
Abstract
Genetic variants have been shown to affect length of survival in cancer patients. This study explored the association between lung cancer susceptibility loci tagged by single-nucleotide polymorphisms (SNPs) identified in the genome-wide association studies and length of survival in small-cell lung cancer (SCLC). Eighteen SNPs were genotyped among 874 SCLC patients and Cox proportional hazards regression was used to examine the effects of genotype on survival length under an additive model with age, sex, smoking status and clinical stage as covariates. We identified 3 loci, 20q13.2 (rs4809957G >A), 22q12.2 (rs36600C >T) and 5p15.33 (rs401681C >T), significantly associated with the survival time of SCLC patients. The adjusted hazard ratio (HR) for patients with the rs4809957 GA or AA genotype was 0.80 (95% CI, 0.66–0.96; P = 0.0187) and 0.73 (95% CI, 0.55–0.96; P = 0.0263) compared with the GG genotype. Using the dominant model, the adjusted HR for patients carrying at least one T allele at rs36600 or rs401681 was 0.78 (95% CI, 0.63–0.96; P = 0.0199) and 1.29 (95% CI, 1.08–1.55; P = 0.0047), respectively, compared with the CC genotype. Stratification analyses showed that the significant associations of these 3 loci were only seen in smokers and male patients. The rs4809957 SNP was only significantly associated with length of survival of patients with extensive-stage but not limited-stage tumor. These results suggest that some of the lung cancer susceptibility loci might also affect the prognosis of SCLC.
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Affiliation(s)
- Dong Li
- State Key Laboratory of Molecular Oncology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Lixuan Wei
- State Key Laboratory of Molecular Oncology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Binghe Xu
- Department of Medical Oncology, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Dianke Yu
- Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Jiang Chang
- Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Peng Yuan
- Department of Medical Oncology, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Zhongli Du
- Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Wen Tan
- Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Hongbing Shen
- Department of Epidemiology and Biostatistics, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Tangchun Wu
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Wu
- State Key Laboratory of Molecular Oncology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- * E-mail: (CW); (DXL)
| | - Dongxin Lin
- Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- * E-mail: (CW); (DXL)
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Patravale AA, Gore AH, Patil DR, Kolekar GB, Deshmukh MB, Anbhule PV. Trouble-Free Multicomponent Method for Combinatorial Synthesis of 2-Amino-4-phenyl-5-H-indeno[1,2-d]pyrimidine-5-one and Their Screening against Cancer Cell Lines. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5013618] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ajinkya A. Patravale
- Medicinal Chemistry
Research Laboratory, Department
of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Anil H. Gore
- Medicinal Chemistry
Research Laboratory, Department
of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Dipti R. Patil
- Medicinal Chemistry
Research Laboratory, Department
of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Govind B. Kolekar
- Medicinal Chemistry
Research Laboratory, Department
of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Madhukar B. Deshmukh
- Medicinal Chemistry
Research Laboratory, Department
of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Prashant V. Anbhule
- Medicinal Chemistry
Research Laboratory, Department
of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
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22
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Seong CS, Varela-Ramirez A, Tang X, Anchondo B, Magallanes D, Aguilera RJ. Cloning and characterization of a novel Drosophila stress induced DNase. PLoS One 2014; 9:e103564. [PMID: 25083901 PMCID: PMC4118900 DOI: 10.1371/journal.pone.0103564] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 07/04/2014] [Indexed: 01/04/2023] Open
Abstract
Drosophila melanogaster flies mount an impressive immune response to a variety of pathogens with an efficient system comprised of both humoral and cellular responses. The fat body is the main producer of the anti-microbial peptides (AMPs) with anti-pathogen activity. During bacterial infection, an array of secreted peptidases, proteases and other enzymes are involved in the dissolution of debris generated by pathogen clearance. Although pathogen destruction should result in the release a large amount of nucleic acids, the mechanisms for its removal are still not known. In this report, we present the characterization of a nuclease gene that is induced not only by bacterial infection but also by oxidative stress. Expression of the identified protein has revealed that it encodes a potent nuclease that has been named Stress Induced DNase (SID). SID belongs to a family of evolutionarily conserved cation-dependent nucleases that degrade both single and double-stranded nucleic acids. Down-regulation of sid expression via RNA interference leads to significant reduction of fly viability after bacterial infection and oxidative stress. Our results indicate that SID protects flies from the toxic effects of excess DNA/RNA released by pathogen destruction and from oxidative damage.
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Affiliation(s)
- Chang-Soo Seong
- Border Biomedical Research Center and Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas, United States of America
| | - Armando Varela-Ramirez
- Border Biomedical Research Center and Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas, United States of America
| | - Xiaolei Tang
- Department of Medicine, Loma Linda University, Loma Linda, California, United States of America
| | - Brenda Anchondo
- Border Biomedical Research Center and Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas, United States of America
| | - Diego Magallanes
- Border Biomedical Research Center and Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas, United States of America
| | - Renato J. Aguilera
- Border Biomedical Research Center and Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas, United States of America
- * E-mail:
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