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  1. Article ; Online: miR-217 Regulates Normal and Tumor Cell Fate Following Induction of Endoplasmic Reticulum Stress.

    Dey, Neekkan / Koumenis, Costas / Ruggero, Davide / Fuchs, Serge Y / Diehl, J Alan

    Molecular cancer research : MCR

    2024  Volume 22, Issue 4, Page(s) 360–372

    Abstract: Rapidly proliferating cancer cells require a microenvironment where essential metabolic nutrients like glucose, oxygen, and growth factors become scarce as the tumor volume surpasses the established vascular capacity of the tissue. Limits in nutrient ... ...

    Abstract Rapidly proliferating cancer cells require a microenvironment where essential metabolic nutrients like glucose, oxygen, and growth factors become scarce as the tumor volume surpasses the established vascular capacity of the tissue. Limits in nutrient availability typically trigger growth arrest and/or apoptosis to prevent cellular expansion. However, tumor cells frequently co-opt cellular survival pathways thereby favoring cell survival under this environmental stress. The unfolded protein response (UPR) pathway is typically engaged by tumor cells to favor adaptation to stress. PERK, an endoplasmic reticulum (ER) protein kinase and UPR effector is activated in tumor cells and contributes tumor cell adaptation by limiting protein translation and balancing redox stress. PERK also induces miRNAs that contribute to tumor adaptation. miR-211 and miR-216b were previously identified as PERK-ATF4-regulated miRNAs that regulate cell survival. We have identified another PERK-responsive miRNA, miR-217, with increased expression under prolonged ER stress. Key targets of miR-217 are identified as TRPM1, the host gene for miR-211 and EZH2. Evidence is provided that miR-217 expression is essential for the rapid loss of miR-211 in prolonged ER stress and provides a functional link for determining whether cells adapt to stress or commit to apoptosis.
    Implications: PERK-dependent induction of miR-217 limits accumulation and function of the prosurvival miRNA, miR-211, to establish cell fate and promote cell commitment to apoptosis.
    MeSH term(s) Humans ; eIF-2 Kinase/genetics ; eIF-2 Kinase/metabolism ; Endoplasmic Reticulum Stress/genetics ; Unfolded Protein Response ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Apoptosis/physiology ; Neoplasms/genetics ; Tumor Microenvironment ; TRPM Cation Channels/genetics
    Chemical Substances eIF-2 Kinase (EC 2.7.11.1) ; MicroRNAs ; TRPM1 protein, human ; TRPM Cation Channels ; MIRN217 microRNA, human
    Language English
    Publishing date 2024-01-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2098788-2
    ISSN 1557-3125 ; 1541-7786
    ISSN (online) 1557-3125
    ISSN 1541-7786
    DOI 10.1158/1541-7786.MCR-23-0676
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Hope and fear for interferon: the receptor-centric outlook on the future of interferon therapy.

    Fuchs, Serge Y

    Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research

    2013  Volume 33, Issue 4, Page(s) 211–225

    Abstract: After several decades of intense clinical research, the great promise of Type I interferons (IFN1) as the anticancer wonder drugs that could cure or, at the very least, curb the progression of various oncological diseases has regrettably failed to ... ...

    Abstract After several decades of intense clinical research, the great promise of Type I interferons (IFN1) as the anticancer wonder drugs that could cure or, at the very least, curb the progression of various oncological diseases has regrettably failed to deliver. Severe side effects and low efficacy of IFN1-based pharmaceutics greatly limited use of these drugs and further reduced the enthusiasm of clinical oncologists for future optimization of IFN1-based therapeutic modalities. Incredibly, extensive clinical studies to assess the efficacy of IFN1 alone or in combination with other anticancer drugs have not been paralleled by an equal scope in defining the determinants that confer cell sensitivity or refractoriness to IFN1. Given that all effects of IFN1 on malignant and benign cells alike are mediated by its receptor, the mechanisms regulating these receptor cell surface levels should play a paramount role in shaping the magnitude and duration of IFN1-elicited effects. These mechanisms and their role in controlling IFN1 responses, as well as an ability of a growing tumor to commandeer these events, are the focus of our review. We postulate that activation of numerous signaling pathways leading to elimination of IFN1 receptor occurs in cancer cells and benign cells that contribute to tumor tissue. We further hypothesize that activation of these eliminative pathways enables the escape from IFN1-driven suppression of tumorigenesis and elicits the primary refractoriness of tumor to the pharmaceutical IFN1.
    MeSH term(s) Drug Resistance, Neoplasm ; Humans ; Interferon Type I/adverse effects ; Interferon Type I/therapeutic use ; Neoplasms/drug therapy ; Receptor, Interferon alpha-beta/metabolism ; Receptors, Interferon/metabolism ; Signal Transduction
    Chemical Substances IFNAR1 protein, human ; Interferon Type I ; Receptors, Interferon ; Receptor, Interferon alpha-beta (156986-95-7)
    Language English
    Publishing date 2013-04-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 1226675-9
    ISSN 1557-7465 ; 1079-9907
    ISSN (online) 1557-7465
    ISSN 1079-9907
    DOI 10.1089/jir.2012.0117
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Anti-metastatic functions of type 1 interferons: Foundation for the adjuvant therapy of cancer.

    Ortiz, Angélica / Fuchs, Serge Y

    Cytokine

    2017  Volume 89, Page(s) 4–11

    Abstract: The anti-tumorigenic effects that type 1 interferons (IFN1) elicited in the in vitro studies prompted consideration of IFN1 as a potent candidate for clinical treatment. Though not all patients responded to IFN1, clinical trials have shown that patients ... ...

    Abstract The anti-tumorigenic effects that type 1 interferons (IFN1) elicited in the in vitro studies prompted consideration of IFN1 as a potent candidate for clinical treatment. Though not all patients responded to IFN1, clinical trials have shown that patients with high risk melanoma, a highly refractory solid malignancy, benefit greatly from intermediate IFN1 treatment in regards to relapse-free and distant-metastasis-free survival. The mechanisms by which IFN1 treatment at early stages of disease suppress tumor recurrence or metastatic incidence are not fully understood. Intracellular IFN1 signaling is known to affect cell differentiation, proliferation, and apoptosis. Moreover, recent studies have revealed specific IFN1-regulated genes that may contribute to IFN1-mediated suppression of cancer progression and metastasis. In concert, expression of these different IFN1 stimulated genes may impede numerous mechanisms that mediate metastatic process. Though, IFN1 treatment is still utilized as part of standard care for metastatic melanoma (alone or in combination with other therapies), cancers find the ways to develop insensitivity to IFN1 treatment allowing for unconstrained disease progression. To determine how and when IFN1 treatment would be most efficacious during disease progression, we must understand how IFN1 signaling affects different metastasis steps. Here, we specifically focus on the anti-metastatic role of endogenous IFN1 and parameters that may help to use pharmaceutical IFN1 in the adjuvant treatment to prevent cancer recurrence and metastatic disease.
    Language English
    Publishing date 2017-01
    Publishing country England
    Document type Review ; Journal Article
    ZDB-ID 1018055-2
    ISSN 1096-0023 ; 1043-4666
    ISSN (online) 1096-0023
    ISSN 1043-4666
    DOI 10.1016/j.cyto.2016.01.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Ubiquitination-mediated regulation of interferon responses.

    Fuchs, Serge Y

    Growth factors (Chur, Switzerland)

    2012  Volume 30, Issue 3, Page(s) 141–148

    Abstract: Interferon cytokine family members shape the immune response to protect the host from both pathologic infections and tumorigenesis. To mediate their physiologic function, interferons evoke a robust and complex signal transduction pathway that leads to ... ...

    Abstract Interferon cytokine family members shape the immune response to protect the host from both pathologic infections and tumorigenesis. To mediate their physiologic function, interferons evoke a robust and complex signal transduction pathway that leads to the induction of interferon-stimulated genes with both proinflammatory and antiviral functions. Numerous mechanisms exist to tightly regulate the extent and duration of these cellular responses. Among such mechanisms, the post-translational conjugation of ubiquitin polypeptides to protein mediators of interferon signaling has emerged as a crucially important mode of control. In this mini-review, we highlight recent advances in our understanding of these ubiquitin-mediated mechanisms, their exploitation by invading viruses, and their possible utilization for medical intervention.
    MeSH term(s) Amino Acid Sequence ; Animals ; Gene Expression Regulation ; Humans ; Interferons/immunology ; Interferons/metabolism ; Molecular Sequence Data ; Signal Transduction/physiology ; Ubiquitin/metabolism ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitination ; Viruses/immunology ; Viruses/metabolism
    Chemical Substances Ubiquitin ; Interferons (9008-11-1) ; Ubiquitin-Protein Ligases (EC 2.3.2.27)
    Keywords covid19
    Language English
    Publishing date 2012-03-07
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1035755-5
    ISSN 1029-2292 ; 0897-7194
    ISSN (online) 1029-2292
    ISSN 0897-7194
    DOI 10.3109/08977194.2012.669382
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A DUB for MITF: no myth, some dubiety.

    Fuchs, Serge Y

    Pigment cell & melanoma research

    2011  Volume 24, Issue 5, Page(s) 877–878

    MeSH term(s) Endopeptidases/metabolism ; Humans ; Melanoma/metabolism ; Microphthalmia-Associated Transcription Factor/chemistry
    Chemical Substances Microphthalmia-Associated Transcription Factor ; Endopeptidases (EC 3.4.-)
    Language English
    Publishing date 2011-11-10
    Publishing country England
    Document type News ; Comment
    ZDB-ID 2409570-9
    ISSN 1755-148X ; 1600-0749 ; 0893-5785 ; 1755-1471
    ISSN (online) 1755-148X ; 1600-0749
    ISSN 0893-5785 ; 1755-1471
    DOI 10.1111/j.1755-148x.2011.00900.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: SCF ubiquitin E3 ligase regulates DNA double-strand breaks in early meiotic recombination.

    Guan, Yongjuan / Lin, Huijuan / Leu, N Adrian / Ruthel, Gordon / Fuchs, Serge Y / Busino, Luca / Luo, Mengcheng / Wang, P Jeremy

    Nucleic acids research

    2022  Volume 50, Issue 9, Page(s) 5129–5144

    Abstract: Homeostasis of meiotic DNA double strand breaks (DSB) is critical for germline genome integrity and homologous recombination. Here we demonstrate an essential role for SKP1, a constitutive subunit of the SCF (SKP1-Cullin-F-box) ubiquitin E3 ligase, in ... ...

    Abstract Homeostasis of meiotic DNA double strand breaks (DSB) is critical for germline genome integrity and homologous recombination. Here we demonstrate an essential role for SKP1, a constitutive subunit of the SCF (SKP1-Cullin-F-box) ubiquitin E3 ligase, in early meiotic processes. SKP1 restrains accumulation of HORMAD1 and the pre-DSB complex (IHO1-REC114-MEI4) on the chromosome axis in meiotic germ cells. Loss of SKP1 prior to meiosis leads to aberrant localization of DSB repair proteins and a failure in synapsis initiation in meiosis of both males and females. Furthermore, SKP1 is crucial for sister chromatid cohesion during the pre-meiotic S-phase. Mechanistically, FBXO47, a meiosis-specific F-box protein, interacts with SKP1 and HORMAD1 and targets HORMAD1 for polyubiquitination and degradation in HEK293T cells. Our results support a model wherein the SCF ubiquitin E3 ligase prevents hyperactive DSB formation through proteasome-mediated degradation of HORMAD1 and subsequent modulation of the pre-DSB complex during meiosis.
    MeSH term(s) Cell Cycle Proteins/metabolism ; DNA ; DNA Breaks, Double-Stranded ; Female ; HEK293 Cells ; Homologous Recombination ; Humans ; Male ; Meiosis/genetics ; SKP Cullin F-Box Protein Ligases/genetics ; Transcription Factors/genetics ; Ubiquitin-Protein Ligases/genetics ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitins/genetics
    Chemical Substances Cell Cycle Proteins ; FBXO47 protein, human ; Transcription Factors ; Ubiquitins ; DNA (9007-49-2) ; SKP Cullin F-Box Protein Ligases (EC 2.3.2.27) ; Ubiquitin-Protein Ligases (EC 2.3.2.27)
    Language English
    Publishing date 2022-05-01
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 186809-3
    ISSN 1362-4962 ; 1362-4954 ; 0301-5610 ; 0305-1048
    ISSN (online) 1362-4962 ; 1362-4954
    ISSN 0301-5610 ; 0305-1048
    DOI 10.1093/nar/gkac304
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  7. Article ; Online: An immunosuppressive vascular niche drives macrophage polarization and immunotherapy resistance in glioblastoma.

    Yang, Fan / Akhtar, Md Naushad / Zhang, Duo / El-Mayta, Rakan / Shin, Junyoung / Dorsey, Jay F / Zhang, Lin / Xu, Xiaowei / Guo, Wei / Bagley, Stephen J / Fuchs, Serge Y / Koumenis, Constantinos / Lathia, Justin D / Mitchell, Michael J / Gong, Yanqing / Fan, Yi

    Science advances

    2024  Volume 10, Issue 9, Page(s) eadj4678

    Abstract: Cancer immunity is subjected to spatiotemporal regulation by leukocyte interaction with neoplastic and stromal cells, contributing to immune evasion and immunotherapy resistance. Here, we identify a distinct mesenchymal-like population of endothelial ... ...

    Abstract Cancer immunity is subjected to spatiotemporal regulation by leukocyte interaction with neoplastic and stromal cells, contributing to immune evasion and immunotherapy resistance. Here, we identify a distinct mesenchymal-like population of endothelial cells (ECs) that form an immunosuppressive vascular niche in glioblastoma (GBM). We reveal a spatially restricted, Twist1/SATB1-mediated sequential transcriptional activation mechanism, through which tumor ECs produce osteopontin to promote immunosuppressive macrophage (Mφ) phenotypes. Genetic or pharmacological ablation of Twist1 reverses Mφ-mediated immunosuppression and enhances T cell infiltration and activation, leading to reduced GBM growth and extended mouse survival, and sensitizing tumor to chimeric antigen receptor T immunotherapy. Thus, these findings uncover a spatially restricted mechanism controlling tumor immunity and suggest that targeting endothelial Twist1 may offer attractive opportunities for optimizing cancer immunotherapy.
    MeSH term(s) Animals ; Mice ; Glioblastoma/genetics ; Endothelial Cells/pathology ; Cell Line, Tumor ; Macrophages ; Immunosuppression Therapy ; Brain Neoplasms/genetics
    Language English
    Publishing date 2024-02-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.adj4678
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  8. Article ; Online: ATF3 and CH25H regulate effector trogocytosis and anti-tumor activities of endogenous and immunotherapeutic cytotoxic T lymphocytes.

    Lu, Zhen / McBrearty, Noreen / Chen, Jinyun / Tomar, Vivek S / Zhang, Hongru / De Rosa, Gianluca / Tan, Aiwen / Weljie, Aalim M / Beiting, Daniel P / Miao, Zhen / George, Subin S / Berger, Allison / Saggu, Gurpanna / Diehl, J Alan / Koumenis, Constantinos / Fuchs, Serge Y

    Cell metabolism

    2024  Volume 36, Issue 5, Page(s) 1164–1167

    Language English
    Publishing date 2024-04-11
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 2176834-1
    ISSN 1932-7420 ; 1550-4131
    ISSN (online) 1932-7420
    ISSN 1550-4131
    DOI 10.1016/j.cmet.2024.04.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Tumor-Derived Small Extracellular Vesicles Inhibit the Efficacy of CAR T Cells against Solid Tumors.

    Zhong, Wenqun / Xiao, Zebin / Qin, Zhiyuan / Yang, Jingbo / Wen, Yi / Yu, Ziyan / Li, Yumei / Sheppard, Neil C / Fuchs, Serge Y / Xu, Xiaowei / Herlyn, Meenhard / June, Carl H / Puré, Ellen / Guo, Wei

    Cancer research

    2023  Volume 83, Issue 16, Page(s) 2790–2806

    Abstract: Chimeric antigen receptor (CAR) T-cell therapy has shown remarkable success in the treatment of hematologic malignancies. Unfortunately, it has limited efficacy against solid tumors, even when the targeted antigens are well expressed. A better ... ...

    Abstract Chimeric antigen receptor (CAR) T-cell therapy has shown remarkable success in the treatment of hematologic malignancies. Unfortunately, it has limited efficacy against solid tumors, even when the targeted antigens are well expressed. A better understanding of the underlying mechanisms of CAR T-cell therapy resistance in solid tumors is necessary to develop strategies to improve efficacy. Here we report that solid tumors release small extracellular vesicles (sEV) that carry both targeted tumor antigens and the immune checkpoint protein PD-L1. These sEVs acted as cell-free functional units to preferentially interact with cognate CAR T cells and efficiently inhibited their proliferation, migration, and function. In syngeneic mouse tumor models, blocking tumor sEV secretion not only boosted the infiltration and antitumor activity of CAR T cells but also improved endogenous antitumor immunity. These results suggest that solid tumors use sEVs as an active defense mechanism to resist CAR T cells and implicate tumor sEVs as a potential therapeutic target to optimize CAR T-cell therapy against solid tumors.
    Significance: Small extracellular vesicles secreted by solid tumors inhibit CAR T cells, which provide a molecular explanation for CAR T-cell resistance and suggests that strategies targeting exosome secretion may enhance CAR T-cell efficacy. See related commentary by Ortiz-Espinosa and Srivastava, p. 2637.
    MeSH term(s) Animals ; Mice ; Cell Line, Tumor ; Neoplasms/metabolism ; T-Lymphocytes ; Immunotherapy, Adoptive/methods ; Antigens, Neoplasm ; Disease Models, Animal ; Extracellular Vesicles/metabolism ; Receptors, Antigen, T-Cell
    Chemical Substances Antigens, Neoplasm ; Receptors, Antigen, T-Cell
    Language English
    Publishing date 2023-04-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 1432-1
    ISSN 1538-7445 ; 0008-5472
    ISSN (online) 1538-7445
    ISSN 0008-5472
    DOI 10.1158/0008-5472.CAN-22-2220
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Age-Dependent Effects of Type I and Type III IFNs in the Pathogenesis of

    Ardanuy, Jeremy / Scanlon, Karen / Skerry, Ciaran / Fuchs, Serge Y / Carbonetti, Nicholas H

    Journal of immunology (Baltimore, Md. : 1950)

    2020  Volume 204, Issue 8, Page(s) 2192–2202

    Abstract: Type I and III IFNs play diverse roles in bacterial infections, being protective for some but deleterious for others. Using RNA-sequencing transcriptomics we investigated lung gene expression responses ... ...

    Abstract Type I and III IFNs play diverse roles in bacterial infections, being protective for some but deleterious for others. Using RNA-sequencing transcriptomics we investigated lung gene expression responses to
    MeSH term(s) Age Factors ; Animals ; Bordetella Infections/genetics ; Bordetella Infections/immunology ; Bordetella pertussis/immunology ; Bordetella pertussis/pathogenicity ; Female ; Interferon Type I/genetics ; Interferon Type I/immunology ; Interferons/genetics ; Interferons/immunology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Mutation ; Receptors, Interferon/deficiency ; Receptors, Interferon/genetics ; Receptors, Interferon/immunology ; Respiratory Tract Infections/genetics ; Respiratory Tract Infections/immunology ; Sequence Analysis, RNA ; Signal Transduction/genetics ; Signal Transduction/immunology ; Transcriptome ; Interferon Lambda
    Chemical Substances Interferon Type I ; Receptors, Interferon ; Interferons (9008-11-1) ; Interferon Lambda
    Language English
    Publishing date 2020-03-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.1900912
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