LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 49

Search options

  1. Article ; Online: Natural killer cell therapies.

    Vivier, Eric / Rebuffet, Lucas / Narni-Mancinelli, Emilie / Cornen, Stéphanie / Igarashi, Rob Y / Fantin, Valeria R

    Nature

    2024  Volume 626, Issue 8000, Page(s) 727–736

    Abstract: Natural killer (NK) cells are lymphocytes of the innate immune system. A key feature of NK cells is their ability to recognize a wide range of cells in distress, particularly tumour cells and cells infected with viruses. They combine both direct effector ...

    Abstract Natural killer (NK) cells are lymphocytes of the innate immune system. A key feature of NK cells is their ability to recognize a wide range of cells in distress, particularly tumour cells and cells infected with viruses. They combine both direct effector functions against their cellular targets and participate in the generation, shaping and maintenance of a multicellular immune response. As our understanding has deepened, several therapeutic strategies focused on NK cells have been conceived and are currently in various stages of development, from preclinical investigations to clinical trials. Here we explore in detail the complexity of NK cell biology in humans and highlight the role of these cells in cancer immunity. We also analyse the harnessing of NK cell immunity through immune checkpoint inhibitors, NK cell engagers, and infusions of preactivated or genetically modified, autologous or allogeneic NK cell products.
    MeSH term(s) Humans ; Immunotherapy, Adoptive/methods ; Killer Cells, Natural/immunology ; Killer Cells, Natural/transplantation ; Neoplasms/immunology ; Neoplasms/therapy ; Immunity, Innate
    Language English
    Publishing date 2024-02-21
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06945-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Self-eating limits EGFR-dependent tumor growth.

    Fantin, Valeria R / Abraham, Robert T

    Cell

    2013  Volume 154, Issue 6, Page(s) 1184–1186

    Abstract: Autophagy is a cell-autonomous, catabolic process that plays context-dependent roles in tumor growth and progression. Wei et al. report that EGFR signaling promotes tumor growth through phosphorylation and functional inactivation of Beclin 1 and the ... ...

    Abstract Autophagy is a cell-autonomous, catabolic process that plays context-dependent roles in tumor growth and progression. Wei et al. report that EGFR signaling promotes tumor growth through phosphorylation and functional inactivation of Beclin 1 and the consequent suppression of autophagy.
    MeSH term(s) Animals ; Apoptosis Regulatory Proteins/metabolism ; Autophagy ; Beclin-1 ; Drug Resistance, Neoplasm ; Humans ; Membrane Proteins/metabolism ; Receptor, Epidermal Growth Factor/metabolism
    Chemical Substances Apoptosis Regulatory Proteins ; BECN1 protein, human ; Beclin-1 ; Membrane Proteins ; EGFR protein, human (EC 2.7.10.1) ; Receptor, Epidermal Growth Factor (EC 2.7.10.1)
    Language English
    Publishing date 2013-09-12
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2013.08.040
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Survival of the fittest: metabolic adaptations in cancer.

    Berardi, Marcelo J / Fantin, Valeria R

    Current opinion in genetics & development

    2011  Volume 21, Issue 1, Page(s) 59–66

    Abstract: Malignant transformation is often a multistep process characterized by an initial period of avascular growth. Rapid cell proliferation creates areas within the emerging preneoplastic lesion with limited diffusion of oxygen and nutrients. In this context, ...

    Abstract Malignant transformation is often a multistep process characterized by an initial period of avascular growth. Rapid cell proliferation creates areas within the emerging preneoplastic lesion with limited diffusion of oxygen and nutrients. In this context, activation of oncogenes, loss of tumor suppressors as well as additional adaptive mechanisms drive a profound metabolic rewiring to overcome the environmental constraints. The emerging cells are in principle better suited to proliferate and survive in the hostile tumor microenvironment. Furthermore, some of the acquired metabolic traits impact their metastatic behavior and response to therapy. It is becoming increasingly clear that malignant cells are highly dependent on certain nutrients, an Achilles' heel of cancer and an opportunity for therapeutic intervention.
    MeSH term(s) Adaptation, Biological ; Animals ; Cell Proliferation ; Glucose/metabolism ; Glutamine/metabolism ; Humans ; Mitochondria/metabolism ; Neoplasms/metabolism ; Neoplasms/pathology
    Chemical Substances Glutamine (0RH81L854J) ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2011-02
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1077312-5
    ISSN 1879-0380 ; 0959-437X
    ISSN (online) 1879-0380
    ISSN 0959-437X
    DOI 10.1016/j.gde.2010.10.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Palbociclib and Fulvestrant Act in Synergy to Modulate Central Carbon Metabolism in Breast Cancer Cells.

    Warth, Benedikt / Palermo, Amelia / Rattray, Nicholas J W / Lee, Nathan V / Zhu, Zhou / Hoang, Linh T / Cai, Yuping / Mazurek, Anthony / Dann, Stephen / VanArsdale, Todd / Fantin, Valeria R / Shields, David / Siuzdak, Gary / Johnson, Caroline H

    Metabolites

    2019  Volume 9, Issue 1

    Abstract: The aims of this study were to determine whether combination chemotherapeutics exhibit a synergistic effect on breast cancer cell metabolism. Palbociclib, is a selective inhibitor of cyclin-dependent kinases 4 and 6, and when patients are treated in ... ...

    Abstract The aims of this study were to determine whether combination chemotherapeutics exhibit a synergistic effect on breast cancer cell metabolism. Palbociclib, is a selective inhibitor of cyclin-dependent kinases 4 and 6, and when patients are treated in combination with fulvestrant, an estrogen receptor antagonist, they have improved progression-free survival. The mechanisms for this survival advantage are not known. Therefore, we analyzed metabolic and transcriptomic changes in MCF-7 cells following single and combination chemotherapy to determine whether selective metabolic pathways are targeted during these different modes of treatment. Individually, the drugs caused metabolic disruption to the same metabolic pathways, however fulvestrant additionally attenuated the pentose phosphate pathway and the production of important coenzymes. A comprehensive effect was observed when the drugs were applied together, confirming the combinatory therapy's synergism in the cell model. This study also highlights the power of merging high-dimensional datasets to unravel mechanisms involved in cancer metabolism and therapy.
    Language English
    Publishing date 2019-01-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662251-8
    ISSN 2218-1989
    ISSN 2218-1989
    DOI 10.3390/metabo9010007
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Leveraging model-based study designs and serial micro-sampling techniques to understand the oral pharmacokinetics of the potent LTB4 inhibitor, CP-105696, for mouse pharmacology studies.

    Spilker, Mary E / Chung, Heekyung / Visswanathan, Ravi / Bagrodia, Shubha / Gernhardt, Steven / Fantin, Valeria R / Ellies, Lesley G

    Xenobiotica; the fate of foreign compounds in biological systems

    2017  Volume 47, Issue 7, Page(s) 600–606

    Abstract: 1. Leukotriene B4 (LTB4) is a proinflammatory mediator important in the progression of a number of inflammatory diseases. Preclinical models can explore the role of LTB4 in pathophysiology using tool compounds, such as CP-105696, that modulate its ... ...

    Abstract 1. Leukotriene B4 (LTB4) is a proinflammatory mediator important in the progression of a number of inflammatory diseases. Preclinical models can explore the role of LTB4 in pathophysiology using tool compounds, such as CP-105696, that modulate its activity. To support preclinical pharmacology studies, micro-sampling techniques and mathematical modeling were used to determine the pharmacokinetics of CP-105696 in mice within the context of systemic inflammation induced by a high-fat diet (HFD). 2. Following oral administration of doses > 35 mg/kg, CP-105696 kinetics can be described by a one-compartment model with first order absorption. The compound's half-life is 44-62 h with an apparent volume of distribution of 0.51-0.72 L/kg. Exposures in animals fed an HFD are within 2-fold of those fed a normal chow diet. Daily dosing at 100 mg/kg was not tolerated and resulted in a >20% weight loss in the mice. 3. CP-105696's long half-life has the potential to support a twice weekly dosing schedule. Given that most chronic inflammatory diseases will require long-term therapies, these results are useful in determining the optimal dosing schedules for preclinical studies using CP-105696.
    MeSH term(s) Administration, Oral ; Animals ; Benzopyrans/pharmacokinetics ; Carboxylic Acids/pharmacokinetics ; Diet, High-Fat ; Half-Life ; Inflammation ; Leukotriene B4/antagonists & inhibitors ; Mice ; Models, Biological ; Neutrophils
    Chemical Substances Benzopyrans ; Carboxylic Acids ; Leukotriene B4 (1HGW4DR56D) ; CP 105696 (Z7354TW4BM)
    Language English
    Publishing date 2017-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 120287-x
    ISSN 1366-5928 ; 0049-8254
    ISSN (online) 1366-5928
    ISSN 0049-8254
    DOI 10.1080/00498254.2016.1207112
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Mechanisms of resistance to histone deacetylase inhibitors and their therapeutic implications.

    Fantin, Valeria R / Richon, Victoria M

    Clinical cancer research : an official journal of the American Association for Cancer Research

    2007  Volume 13, Issue 24, Page(s) 7237–7242

    Abstract: Histone deacetylase inhibitors (HDI) are a promising new approach to the treatment of cancer. HDIs have been shown to induce differentiation, cell cycle arrest, and apoptosis in a variety of transformed cell lines; inhibit tumor growth in animal models; ... ...

    Abstract Histone deacetylase inhibitors (HDI) are a promising new approach to the treatment of cancer. HDIs have been shown to induce differentiation, cell cycle arrest, and apoptosis in a variety of transformed cell lines; inhibit tumor growth in animal models; and show antitumor activity in clinical trials. Vorinostat, which has shown clinical responses in approximately 30% of patients with advanced cutaneous T-cell lymphoma, is the first HDI approved for the treatment of cancer, and it is currently being evaluated in other indications. A better understanding of the molecular determinants of resistance to HDIs may provide the basis for therapeutic combinations with improved clinical efficacy. Poor response to treatment could be linked to systemic factors like pharmacokinetics or to tumor-specific factors both at the level of the malignant cells (tumor intrinsic) or the tumor microenvironment. This review focuses on the tumor intrinsic mechanisms of drug resistance (excluding mechanism of acquired resistance due to chronic exposure). In particular, attention is given to selected mechanisms that are relevant across chemical classes of HDIs and that can aid in the design of rational combination strategies.
    MeSH term(s) Animals ; Apoptosis/drug effects ; Apoptosis/physiology ; Drug Resistance, Neoplasm/physiology ; Enzyme Inhibitors/pharmacology ; Histone Deacetylase Inhibitors ; Humans ; Neoplasms/drug therapy ; Neoplasms/enzymology
    Chemical Substances Enzyme Inhibitors ; Histone Deacetylase Inhibitors
    Language English
    Publishing date 2007-12-15
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1225457-5
    ISSN 1557-3265 ; 1078-0432
    ISSN (online) 1557-3265
    ISSN 1078-0432
    DOI 10.1158/1078-0432.CCR-07-2114
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Discovery of a Potent Steroidal Glucocorticoid Receptor Antagonist with Enhanced Selectivity against the Progesterone and Androgen Receptors (OP-3633).

    Du, Xiaohui / Eksterowicz, John / Zhou, Haiying / Rew, Yosup / Zhu, Liusheng / Yan, Xuelei / Medina, Julio C / Huang, Tom / Chen, Xi / Sutimantanapi, Dena / Jahchan, Nadine / Kong, Wayne / Sun, Jessica / Zavorotinskaya, Tatiana / Ye, Qiuping / Fantin, Valeria R / Sun, Daqing

    Journal of medicinal chemistry

    2019  Volume 62, Issue 14, Page(s) 6751–6764

    Abstract: Structure-based modification of mifepristone ( ...

    Abstract Structure-based modification of mifepristone (
    MeSH term(s) Androgen Receptor Antagonists/chemistry ; Androgen Receptor Antagonists/pharmacology ; Drug Discovery ; Humans ; Mifepristone/analogs & derivatives ; Mifepristone/pharmacology ; Models, Molecular ; Receptors, Androgen/metabolism ; Receptors, Glucocorticoid/antagonists & inhibitors ; Receptors, Glucocorticoid/metabolism ; Receptors, Progesterone/antagonists & inhibitors ; Receptors, Progesterone/metabolism
    Chemical Substances Androgen Receptor Antagonists ; Receptors, Androgen ; Receptors, Glucocorticoid ; Receptors, Progesterone ; Mifepristone (320T6RNW1F)
    Language English
    Publishing date 2019-07-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.9b00711
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Orally Bioavailable Small-Molecule CD73 Inhibitor (OP-5244) Reverses Immunosuppression through Blockade of Adenosine Production.

    Du, Xiaohui / Moore, Jared / Blank, Brian R / Eksterowicz, John / Sutimantanapi, Dena / Yuen, Natalie / Metzger, Todd / Chan, Brenda / Huang, Tom / Chen, Xi / Chen, Yuping / Duong, Frank / Kong, Wayne / Chang, Jae H / Sun, Jessica / Zavorotinskaya, Tatiana / Ye, Qiuping / Junttila, Melissa R / Ndubaku, Chudi /
    Friedman, Lori S / Fantin, Valeria R / Sun, Daqing

    Journal of medicinal chemistry

    2020  Volume 63, Issue 18, Page(s) 10433–10459

    Abstract: The adenosinergic pathway represents an attractive new therapeutic approach in cancer immunotherapy. In this pathway, ecto-5-nucleotidase CD73 has the unique function of regulating production of immunosuppressive adenosine (ADO) through the hydrolysis of ...

    Abstract The adenosinergic pathway represents an attractive new therapeutic approach in cancer immunotherapy. In this pathway, ecto-5-nucleotidase CD73 has the unique function of regulating production of immunosuppressive adenosine (ADO) through the hydrolysis of AMP. CD73 is overexpressed in many cancers, resulting in elevated levels of ADO that correspond to poor patient prognosis. Therefore, reducing the level of ADO via inhibition of CD73 is a potential strategy for treating cancers. Based on the binding mode of adenosine 5'-(α,β-methylene)diphosphate (AOPCP) with human CD73, we designed a series of novel monophosphonate small-molecule CD73 inhibitors. Among them, OP-5244 (
    MeSH term(s) 5'-Nucleotidase/antagonists & inhibitors ; Adenosine/antagonists & inhibitors ; Administration, Oral ; Animals ; CD8-Positive T-Lymphocytes/drug effects ; Cell Line, Tumor ; Dogs ; Enzyme Inhibitors/administration & dosage ; Enzyme Inhibitors/chemical synthesis ; Enzyme Inhibitors/pharmacokinetics ; Enzyme Inhibitors/pharmacology ; GPI-Linked Proteins/antagonists & inhibitors ; Humans ; Immunologic Factors/administration & dosage ; Immunologic Factors/chemical synthesis ; Immunologic Factors/pharmacokinetics ; Immunologic Factors/pharmacology ; Macaca fascicularis ; Mice, Inbred BALB C ; Molecular Structure ; Nucleosides/administration & dosage ; Nucleosides/chemical synthesis ; Nucleosides/pharmacokinetics ; Nucleosides/pharmacology ; Organophosphonates/administration & dosage ; Organophosphonates/chemical synthesis ; Organophosphonates/pharmacokinetics ; Organophosphonates/pharmacology ; Rats ; Stereoisomerism ; Structure-Activity Relationship
    Chemical Substances Enzyme Inhibitors ; GPI-Linked Proteins ; Immunologic Factors ; Nucleosides ; Organophosphonates ; 5'-Nucleotidase (EC 3.1.3.5) ; NT5E protein, human (EC 3.1.3.5) ; Adenosine (K72T3FS567)
    Language English
    Publishing date 2020-09-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.0c01086
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Survival of the fittest: metabolic adaptations in cancer

    Berardi, Marcelo J / Fantin, Valeria R

    Current Opinion in Genetics & Development. 2011 Feb., v. 21, no. 1

    2011  

    Abstract: Malignant transformation is often a multistep process characterized by an initial period of avascular growth. Rapid cell proliferation creates areas within the emerging preneoplastic lesion with limited diffusion of oxygen and nutrients. In this context, ...

    Abstract Malignant transformation is often a multistep process characterized by an initial period of avascular growth. Rapid cell proliferation creates areas within the emerging preneoplastic lesion with limited diffusion of oxygen and nutrients. In this context, activation of oncogenes, loss of tumor suppressors as well as additional adaptive mechanisms drive a profound metabolic rewiring to overcome the environmental constraints. The emerging cells are in principle better suited to proliferate and survive in the hostile tumor microenvironment. Furthermore, some of the acquired metabolic traits impact their metastatic behavior and response to therapy. It is becoming increasingly clear that malignant cells are highly dependent on certain nutrients, an Achilles’ heel of cancer and an opportunity for therapeutic intervention.
    Keywords cell proliferation ; metastasis ; nutrients ; oncogenes ; oxygen ; therapeutics
    Language English
    Dates of publication 2011-02
    Size p. 59-66.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1077312-5
    ISSN 1879-0380 ; 0959-437X
    ISSN (online) 1879-0380
    ISSN 0959-437X
    DOI 10.1016/j.gde.2010.10.001
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article: F16, a mitochondriotoxic compound, triggers apoptosis or necrosis depending on the genetic background of the target carcinoma cell.

    Fantin, Valeria R / Leder, Philip

    Cancer research

    2003  Volume 64, Issue 1, Page(s) 329–336

    Abstract: Mutations that lead to the emergence of resistance to apoptosis are commonly observed among tumor cells. Some of the proteins affected are integral parts of the apoptotic cascade such as pro- and antiapoptotic members of the Bcl-2 family. F16 is a small ... ...

    Abstract Mutations that lead to the emergence of resistance to apoptosis are commonly observed among tumor cells. Some of the proteins affected are integral parts of the apoptotic cascade such as pro- and antiapoptotic members of the Bcl-2 family. F16 is a small molecule that accumulates in mitochondria of a variety of tumor cells and interferes with their physiological function. Because this interference ultimately triggers apoptosis in many affected cell lines, we examined the effect of antiapoptotic Bcl-2 overexpression on the response of cells to F16. Our results showed that high levels of Bcl-2 did not block the ability of F16 to induce cell death. However, unlike the apoptotic response that followed F16 treatment of cells with moderate Bcl-2 levels, cells resistant to a variety of apoptotic stimuli by virtue of Bcl-2 overexpression succumbed to F16 by necrosis. Thus, this dual ability of the mitochondriotoxic compound F16 to induce apoptosis and necrosis may represent an added advantage by expanding its spectrum of action toward genetically altered tumor cells incapable of apoptosis.
    MeSH term(s) Apoptosis/drug effects ; Carcinoma/genetics ; Carcinoma/pathology ; Caspase Inhibitors ; Cell Death/drug effects ; Cell Division/drug effects ; Cell Line, Tumor ; Cysteine Proteinase Inhibitors/pharmacology ; Flow Cytometry ; Homeostasis ; Humans ; Indoles/toxicity ; Mitochondria/drug effects ; Mitochondria/pathology ; Necrosis ; Oxidation-Reduction ; Proto-Oncogene Proteins c-bcl-2/genetics ; Pyridinium Compounds/toxicity
    Chemical Substances Caspase Inhibitors ; Cysteine Proteinase Inhibitors ; Indoles ; Proto-Oncogene Proteins c-bcl-2 ; Pyridinium Compounds ; 4-(2-(indol-3-yl)vinyl)-1-methylpyridinium (64651-39-4)
    Language English
    Publishing date 2003-12-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1432-1
    ISSN 1538-7445 ; 0008-5472
    ISSN (online) 1538-7445
    ISSN 0008-5472
    DOI 10.1158/0008-5472.can-03-0899
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top