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  1. Article ; Online: Engineered bacteria recycle tumor metabolic waste to boost immunotherapy.

    Cubillos-Ruiz, Juan R / Cubillos-Ruiz, Andres

    Cell host & microbe

    2021  Volume 29, Issue 12, Page(s) 1725–1727

    Abstract: A recent study published in Nature by Canale et al. (2021) shows that engineered probiotic bacteria can be used to augment the availability of nutrients required for optimal immune cell function in tumors. This approach enhances anti-tumor immunity and ... ...

    Abstract A recent study published in Nature by Canale et al. (2021) shows that engineered probiotic bacteria can be used to augment the availability of nutrients required for optimal immune cell function in tumors. This approach enhances anti-tumor immunity and improves the efficacy of immunotherapy in mouse models of cancer.
    MeSH term(s) Animals ; Bacteria/genetics ; Bacteria/metabolism ; Disease Models, Animal ; Immunization, Secondary ; Immunotherapy ; Metabolic Engineering ; Mice ; Neoplasms/metabolism ; Nutrients ; Probiotics ; Tumor Microenvironment/immunology
    Language English
    Publishing date 2021-12-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2278004-X
    ISSN 1934-6069 ; 1931-3128
    ISSN (online) 1934-6069
    ISSN 1931-3128
    DOI 10.1016/j.chom.2021.11.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Optineurin Guards IFNγ Signaling in Cancer Cells.

    Salvagno, Camilla / Cubillos-Ruiz, Juan R

    Cancer discovery

    2021  Volume 11, Issue 7, Page(s) 1623–1625

    Abstract: In this issue, Du and colleagues uncover that optineurin functions as a key regulator of IFNγ receptor (IFNGR1) stability in malignant cells. Loss of optineurin in colorectal cancer cells causes IFNGR1 degradation, leading to impaired IFNγ signaling, ... ...

    Abstract In this issue, Du and colleagues uncover that optineurin functions as a key regulator of IFNγ receptor (IFNGR1) stability in malignant cells. Loss of optineurin in colorectal cancer cells causes IFNGR1 degradation, leading to impaired IFNγ signaling, decreased MHC-I expression, and enhanced ability to evade adaptive immune control.
    MeSH term(s) Neoplasms/genetics ; Receptors, Interferon
    Chemical Substances Receptors, Interferon
    Language English
    Publishing date 2021-07-18
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2625242-9
    ISSN 2159-8290 ; 2159-8274
    ISSN (online) 2159-8290
    ISSN 2159-8274
    DOI 10.1158/2159-8290.CD-21-0362
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Control of immune cell function by the unfolded protein response.

    Di Conza, Giusy / Ho, Ping-Chih / Cubillos-Ruiz, Juan R / Huang, Stanley Ching-Cheng

    Nature reviews. Immunology

    2023  Volume 23, Issue 9, Page(s) 546–562

    Abstract: Initiating and maintaining optimal immune responses requires high levels of protein synthesis, folding, modification and trafficking in leukocytes, which are processes orchestrated by the endoplasmic reticulum. Importantly, diverse extracellular and ... ...

    Abstract Initiating and maintaining optimal immune responses requires high levels of protein synthesis, folding, modification and trafficking in leukocytes, which are processes orchestrated by the endoplasmic reticulum. Importantly, diverse extracellular and intracellular conditions can compromise the protein-handling capacity of this organelle, inducing a state of 'endoplasmic reticulum stress' that activates the unfolded protein response (UPR). Emerging evidence shows that physiological or pathological activation of the UPR can have effects on immune cell survival, metabolism, function and fate. In this Review, we discuss the canonical role of the adaptive UPR in immune cells and how dysregulation of this pathway in leukocytes contributes to diverse pathologies such as cancer, autoimmunity and metabolic disorders. Furthermore, we provide an overview as to how pharmacological approaches that modulate the UPR could be harnessed to control or activate immune cell function in disease.
    MeSH term(s) Humans ; Unfolded Protein Response ; Endoplasmic Reticulum Stress ; Neoplasms/pathology ; Immunity ; Endoplasmic Reticulum/metabolism
    Language English
    Publishing date 2023-02-08
    Publishing country England
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-023-00838-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Endoplasmic reticulum stress signals in the tumour and its microenvironment.

    Chen, Xi / Cubillos-Ruiz, Juan R

    Nature reviews. Cancer

    2020  Volume 21, Issue 2, Page(s) 71–88

    Abstract: Protein handling, modification and folding in the endoplasmic reticulum (ER) are tightly regulated processes that determine cell function, fate and survival. In several tumour types, diverse oncogenic, transcriptional and metabolic abnormalities ... ...

    Abstract Protein handling, modification and folding in the endoplasmic reticulum (ER) are tightly regulated processes that determine cell function, fate and survival. In several tumour types, diverse oncogenic, transcriptional and metabolic abnormalities cooperate to generate hostile microenvironments that disrupt ER homeostasis in malignant and stromal cells, as well as infiltrating leukocytes. These changes provoke a state of persistent ER stress that has been demonstrated to govern multiple pro-tumoural attributes in the cancer cell while dynamically reprogramming the function of innate and adaptive immune cells. Aberrant activation of ER stress sensors and their downstream signalling pathways have therefore emerged as key regulators of tumour growth and metastasis as well as response to chemotherapy, targeted therapies and immunotherapy. In this Review, we discuss the physiological inducers of ER stress in the tumour milieu, the interplay between oncogenic signalling and ER stress response pathways in the cancer cell and the profound immunomodulatory effects of sustained ER stress responses in tumours.
    MeSH term(s) Animals ; Disease Models, Animal ; Endoplasmic Reticulum/immunology ; Endoplasmic Reticulum/physiology ; Endoplasmic Reticulum Stress/immunology ; Endoplasmic Reticulum Stress/physiology ; Humans ; Immunomodulation/immunology ; Immunomodulation/physiology ; Neoplasms/immunology ; Neoplasms/physiopathology ; Neoplastic Processes ; Signal Transduction/immunology ; Signal Transduction/physiology ; Tumor Microenvironment/immunology ; Tumor Microenvironment/physiology ; Unfolded Protein Response/immunology ; Unfolded Protein Response/physiology
    Language English
    Publishing date 2020-11-19
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 2062767-1
    ISSN 1474-1768 ; 1474-175X
    ISSN (online) 1474-1768
    ISSN 1474-175X
    DOI 10.1038/s41568-020-00312-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Decoding endoplasmic reticulum stress signals in cancer cells and antitumor immunity.

    Salvagno, Camilla / Mandula, Jessica K / Rodriguez, Paulo C / Cubillos-Ruiz, Juan R

    Trends in cancer

    2022  Volume 8, Issue 11, Page(s) 930–943

    Abstract: ... activating transcription factor (ATF6), inositol-requiring enzyme 1α (IRE1α), and protein kinase R (PKR)-like ER kinase (PERK ...

    Abstract The tumor microenvironment (TME) provokes endoplasmic reticulum (ER) stress in malignant cells and infiltrating immune populations. Sensing and responding to ER stress is coordinated by the unfolded protein response (UPR), an integrated signaling pathway governed by three ER stress sensors: activating transcription factor (ATF6), inositol-requiring enzyme 1α (IRE1α), and protein kinase R (PKR)-like ER kinase (PERK). Persistent UPR activation modulates malignant progression, tumor growth, metastasis, and protective antitumor immunity. Hence, therapies targeting ER stress signaling can be harnessed to elicit direct tumor killing and concomitant anticancer immunity. We highlight recent findings on the role of the ER stress responses in onco-immunology, with an emphasis on genetic vulnerabilities that render tumors highly sensitive to therapeutic UPR modulation.
    MeSH term(s) Humans ; Endoplasmic Reticulum Stress ; Endoribonucleases/metabolism ; Protein Serine-Threonine Kinases ; Neoplasms/pathology ; Inositol ; Tumor Microenvironment
    Chemical Substances Endoribonucleases (EC 3.1.-) ; Protein Serine-Threonine Kinases (EC 2.7.11.1) ; Inositol (4L6452S749)
    Language English
    Publishing date 2022-07-08
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2852626-0
    ISSN 2405-8025 ; 2405-8033 ; 2405-8033
    ISSN (online) 2405-8025 ; 2405-8033
    ISSN 2405-8033
    DOI 10.1016/j.trecan.2022.06.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Endoplasmic Reticulum Stress Responses in Intratumoral Immune Cells: Implications for Cancer Immunotherapy.

    Song, Minkyung / Cubillos-Ruiz, Juan R

    Trends in immunology

    2019  Volume 40, Issue 2, Page(s) 128–141

    Abstract: Protective anti-tumor immune responses are mediated by effector molecules that enable successful elimination of malignant cells. As the site where transmembrane and secreted proteins are generated, the endoplasmic reticulum (ER) of immune cells plays a ... ...

    Abstract Protective anti-tumor immune responses are mediated by effector molecules that enable successful elimination of malignant cells. As the site where transmembrane and secreted proteins are generated, the endoplasmic reticulum (ER) of immune cells plays a key role in this process. Recent studies have indicated that adverse conditions within tumors perturb ER homeostasis in infiltrating immune cells, which can impede the development of effective anti-cancer immunity. Here, we describe how the tumor microenvironment induces ER stress in immune cells, and discuss the detrimental consequences of persistent ER stress responses in intratumoral immune populations. We also explore the concept of targeting ER stress responses to reinvigorate endogenous anti-tumor immunity and enhance the efficacy of various forms of cancer immunotherapy.
    MeSH term(s) Animals ; Endoplasmic Reticulum Stress/immunology ; Humans ; Immunotherapy ; Neoplasms/immunology ; Neoplasms/pathology ; Neoplasms/therapy
    Language English
    Publishing date 2019-01-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 2036831-8
    ISSN 1471-4981 ; 1471-4906
    ISSN (online) 1471-4981
    ISSN 1471-4906
    DOI 10.1016/j.it.2018.12.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: The impact of endoplasmic reticulum stress responses in dendritic cell immunobiology.

    Salvagno, Camilla / Cubillos-Ruiz, Juan R

    International review of cell and molecular biology

    2019  Volume 349, Page(s) 153–176

    Abstract: Dendritic cells (DCs) are critical for bridging innate and adaptive immunity. They do so by presenting antigens to T cells, and by expressing diverse molecules that further promote T cell activation, differentiation and memory formation. During this ... ...

    Abstract Dendritic cells (DCs) are critical for bridging innate and adaptive immunity. They do so by presenting antigens to T cells, and by expressing diverse molecules that further promote T cell activation, differentiation and memory formation. During this process, intracellular and extracellular factors can perturb the protein-folding capacity of endoplasmic reticulum (ER) and induce a cellular state of "ER stress," which is controlled and resolved by the unfolded protein response (UPR). Interestingly, various studies have shown that DCs can activate UPR-related pathways even in the absence of global ER stress, and that this process can modulate their normal activity. In other settings, such as cancer, adverse microenvironmental conditions have been demonstrated to evoke severe ER stress and persistent activation of the UPR in tumor-infiltrating DCs. This process disrupts their metabolism and local antigen-presenting capacity, hence impeding the initiation and maintenance of anti-cancer immunity. Here, we review recent findings on how canonical and non-canonical UPR activation impacts DC immunobiology at the steady-state, upon activation via pattern recognition receptors, and under diverse pathological conditions. We also discuss the potential therapeutic implications that targeting the UPR in DCs may have in the context of cancer and in other pathologies such as graft-versus-host disease.
    MeSH term(s) Animals ; Dendritic Cells/immunology ; Dendritic Cells/pathology ; Endoplasmic Reticulum Stress/immunology ; Humans ; Unfolded Protein Response
    Language English
    Publishing date 2019-09-11
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 2427220-6
    ISSN 1937-6448 ; 0074-7696
    ISSN 1937-6448 ; 0074-7696
    DOI 10.1016/bs.ircmb.2019.08.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Dendritic Cell Metabolism and Function in Tumors.

    Giovanelli, Paolo / Sandoval, Tito A / Cubillos-Ruiz, Juan R

    Trends in immunology

    2019  Volume 40, Issue 8, Page(s) 699–718

    Abstract: Dendritic cells (DCs) are fundamental for the initiation and maintenance of immune responses against malignant cells. Despite the unique potential of DCs to elicit robust anticancer immunity, the tumor microenvironment poses a variety of challenges that ... ...

    Abstract Dendritic cells (DCs) are fundamental for the initiation and maintenance of immune responses against malignant cells. Despite the unique potential of DCs to elicit robust anticancer immunity, the tumor microenvironment poses a variety of challenges that hinder competent DC function and consequently inhibit the development of protective immune responses. Here, we discuss recent studies uncovering new molecular pathways and metabolic programs that tumors manipulate in DCs to disturb their homeostasis and evade immune control. We also examine certain state-of-the-art strategies that seek to improve DC function and elicit antitumor responses in hosts with cancer. Understanding and modulating DC metabolism and activity within tumors might help improve the efficacy of T cell-centric immunotherapies.
    MeSH term(s) Amino Acids/metabolism ; Animals ; Cellular Reprogramming ; Dendritic Cells/immunology ; Dendritic Cells/metabolism ; Disease Susceptibility/immunology ; Energy Metabolism ; Glycolysis ; Humans ; Immunomodulation ; Lipid Metabolism ; Mice ; Neoplasms/etiology ; Neoplasms/metabolism ; Neoplasms/pathology ; Nitric Oxide/metabolism ; Nitric Oxide Synthase Type II/metabolism ; Oxidative Stress ; T-Lymphocyte Subsets/immunology ; T-Lymphocyte Subsets/metabolism ; Tumor Microenvironment/immunology
    Chemical Substances Amino Acids ; Nitric Oxide (31C4KY9ESH) ; Nitric Oxide Synthase Type II (EC 1.14.13.39)
    Language English
    Publishing date 2019-07-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 2036831-8
    ISSN 1471-4981 ; 1471-4906
    ISSN (online) 1471-4981
    ISSN 1471-4906
    DOI 10.1016/j.it.2019.06.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Remodeling of the Enterococcal Cell Envelope during Surface Penetration Promotes Intrinsic Resistance to Stress.

    Ramos, Yusibeska / Sansone, Stephanie / Hwang, Sung-Min / Sandoval, Tito A / Zhu, Mengmeng / Zhang, Guoan / Cubillos-Ruiz, Juan R / Morales, Diana K

    mBio

    2022  Volume 13, Issue 6, Page(s) e0229422

    Abstract: Enterococcus faecalis is a normal commensal of the human gastrointestinal tract (GIT). However, upon disruption of gut homeostasis, this nonmotile bacterium can egress from its natural niche and spread to distal organs. While this translocation process ... ...

    Abstract Enterococcus faecalis is a normal commensal of the human gastrointestinal tract (GIT). However, upon disruption of gut homeostasis, this nonmotile bacterium can egress from its natural niche and spread to distal organs. While this translocation process can lead to life-threatening systemic infections, the underlying mechanisms remain largely unexplored. Our prior work showed that E. faecalis migration across diverse surfaces requires the formation of matrix-covered multicellular aggregates and the synthesis of exopolysaccharides, but how enterococcal cells are reprogrammed during this process is unknown. Whether surface penetration endows E. faecalis with adaptive advantages is also uncertain. Here, we report that surface penetration promotes the generation of a metabolically and phenotypically distinct E. faecalis population with an enhanced capacity to endure various forms of extracellular stress. Surface-invading enterococci demonstrated major ultrastructural alterations in their cell envelope characterized by increased membrane glycolipid content. These changes were accompanied by marked induction of specific transcriptional programs enhancing cell envelope biogenesis and glycolipid metabolism. Notably, the surface-invading population demonstrated superior tolerance to membrane-damaging antimicrobials, including daptomycin and β-defensins produced by epithelial cells. Genetic mutations impairing glycolipid biosynthesis sensitized E. faecalis to envelope stressors and reduced the ability of this bacterium to penetrate semisolid surfaces and translocate through human intestinal epithelial cell monolayers. Our study reveals that surface penetration induces distinct transcriptional, metabolic, and ultrastructural changes that equip E. faecalis with enhanced capacity to resist external stressors and thrive in its surrounding environment.
    MeSH term(s) Humans ; Cell Membrane/metabolism ; Daptomycin/pharmacology ; Cell Wall/metabolism ; Enterococcus faecalis/genetics ; Biofilms ; Anti-Bacterial Agents/pharmacology
    Chemical Substances Daptomycin (NWQ5N31VKK) ; Anti-Bacterial Agents
    Language English
    Publishing date 2022-11-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2557172-2
    ISSN 2150-7511 ; 2161-2129
    ISSN (online) 2150-7511
    ISSN 2161-2129
    DOI 10.1128/mbio.02294-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Methods and protocols for chemotherapy-induced peripheral neuropathy (CIPN) mouse models using paclitaxel.

    Pennypacker, Sarah D / Fonseca, Miriam M / Morgan, James W / Dougherty, Patrick M / Cubillos-Ruiz, Juan R / Strowd, Roy E / Romero-Sandoval, E Alfonso

    Methods in cell biology

    2022  Volume 168, Page(s) 277–298

    Abstract: While cancer patients may have chemotherapeutics to thank for being cured of their malignancy, they are often left to suffer a disabling neuropathy induced by that same cancer treatment. This neuropathy, known as chemotherapy-induced peripheral ... ...

    Abstract While cancer patients may have chemotherapeutics to thank for being cured of their malignancy, they are often left to suffer a disabling neuropathy induced by that same cancer treatment. This neuropathy, known as chemotherapy-induced peripheral neuropathy, or CIPN, is one of the most debilitating survivorship concerns for patients, with many citing hallmark symptoms of hyperalgesia, allodynia, and numbness, and subsequently reducing their dose or even ceasing treatment altogether. Investigations into this interplay between the antineoplastic activity of chemotherapeutic agents and the preservation of peripheral nerve health are therefore crucial for the development of CIPN treatment and prevention methods. Responding to need, current literature is inundated with varying preclinical models of CIPN. This chapter thus seeks to provide a detailed and reliable methodology for the induction and assessment of CIPN in mice, using a preclinical model that is both reproducible and translatable to several aspects of the clinical phenotype. Specifically, this chapter lays out a model for intermittent low-dose paclitaxel induction of CIPN in C57BL/6J mice, and a testing of this induction via von Frey filament mechanical hypersensitivity assays, a mechanical hyposensitivity (numbness) assay, and a cold-thermal allodynia assay (acetone test). These protocols can easily be adjusted to fit the needs of individual CIPN experiments, as stated throughout the chapter.
    MeSH term(s) Animals ; Antineoplastic Agents/toxicity ; Humans ; Hyperalgesia/chemically induced ; Hyperalgesia/drug therapy ; Hyperalgesia/genetics ; Mice ; Mice, Inbred C57BL ; Paclitaxel/adverse effects ; Peripheral Nervous System Diseases/chemically induced ; Peripheral Nervous System Diseases/drug therapy
    Chemical Substances Antineoplastic Agents ; Paclitaxel (P88XT4IS4D)
    Language English
    Publishing date 2022-01-10
    Publishing country United States
    Document type Journal Article
    ISSN 0091-679X
    ISSN 0091-679X
    DOI 10.1016/bs.mcb.2021.12.019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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