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  1. Article ; Online: Orthotopic Xenografts of Colorectal Cancer Stem Cells.

    De Angelis, Maria Laura / Francescangeli, Federica / Zeuner, Ann / Baiocchi, Marta

    Methods in molecular biology (Clifton, N.J.)

    2022  Volume 2429, Page(s) 555–565

    Abstract: Cancer stem cells (CSCs) are responsible for the initiation of primary tumors and for metastasis seeding at distant organs. Therefore, they represent crucial targets for the study and preclinical testing of new antimetastatic approaches. We recently ... ...

    Abstract Cancer stem cells (CSCs) are responsible for the initiation of primary tumors and for metastasis seeding at distant organs. Therefore, they represent crucial targets for the study and preclinical testing of new antimetastatic approaches. We recently generated a molecularly characterized biobank of colorectal CSCs, isolated from individual patients and cultured in serum-free medium as multicellular spheroids. Here, we describe in detail the generation of a metastatic model of colorectal cancer based on the orthotopic injection of CSCs into the cecum serosa of immunodeficient mice. Such a model represents an excellent experimental system to investigate the cellular and molecular mechanisms involved in colorectal cancer metastasis, to analyze rare premetastatic elements such as circulating and disseminated tumor cells, and for the preclinical testing of new agents with potential antimetastatic activity.
    MeSH term(s) Animals ; Cell Line, Tumor ; Colorectal Neoplasms/pathology ; Heterografts ; Humans ; Mice ; Neoplastic Stem Cells/pathology ; Spheroids, Cellular/pathology
    Language English
    Publishing date 2022-05-04
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-1979-7_39
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Is cancer an intelligent species?

    Nicolazzo, Chiara / Francescangeli, Federica / Magri, Valentina / Giuliani, Alessandro / Zeuner, Ann / Gazzaniga, Paola

    Cancer metastasis reviews

    2023  Volume 42, Issue 4, Page(s) 1201–1218

    Abstract: Some relevant emerging properties of intelligent systems are "adaptation to a changing environment," "reaction to unexpected situations," "capacity of problem solving," and "ability to communicate." Single cells have remarkable abilities to adapt, make ... ...

    Abstract Some relevant emerging properties of intelligent systems are "adaptation to a changing environment," "reaction to unexpected situations," "capacity of problem solving," and "ability to communicate." Single cells have remarkable abilities to adapt, make adequate context-dependent decision, take constructive actions, and communicate, thus theoretically meeting all the above-mentioned requirements. From a biological point of view, cancer can be viewed as an invasive species, composed of cells that move from primary to distant sites, being continuously exposed to changes in the environmental conditions. Blood represents the first hostile habitat that a cancer cell encounters once detached from the primary site, so that cancer cells must rapidly carry out multiple adaptation strategies to survive. The aim of this review was to deepen the adaptation mechanisms of cancer cells in the blood microenvironment, particularly referring to four adaptation strategies typical of animal species (phenotypic adaptation, metabolic adaptation, niche adaptation, and collective adaptation), which together define the broad concept of biological intelligence. We provided evidence that the required adaptations (either structural, metabolic, and related to metastatic niche formation) and "social" behavior are useful principles allowing putting into a coherent frame many features of circulating cancer cells. This interpretative frame is described by the comparison with analog behavioral traits typical of various animal models.
    MeSH term(s) Animals ; Neoplasms/pathology ; Intelligence ; Tumor Microenvironment
    Language English
    Publishing date 2023-08-04
    Publishing country Netherlands
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 604857-2
    ISSN 1573-7233 ; 0167-7659
    ISSN (online) 1573-7233
    ISSN 0167-7659
    DOI 10.1007/s10555-023-10123-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: COVID-19: a potential driver of immune-mediated breast cancer recurrence?

    Francescangeli, Federica / De Angelis, Maria Laura / Zeuner, Ann

    Breast cancer research : BCR

    2020  Volume 22, Issue 1, Page(s) 117

    Abstract: Severe coronavirus disease 2019 (COVID-19) causes a hyperactivation of immune cells, resulting in lung inflammation. Recent studies showed that COVID-19 induces the production of factors previously implicated in the reawakening of dormant breast cancer ... ...

    Abstract Severe coronavirus disease 2019 (COVID-19) causes a hyperactivation of immune cells, resulting in lung inflammation. Recent studies showed that COVID-19 induces the production of factors previously implicated in the reawakening of dormant breast cancer cells such as neutrophil extracellular traps (NETs). The presence of NETs and of a pro-inflammatory microenvironment may therefore promote breast cancer reactivation, increasing the risk of pulmonary metastasis. Further studies will be required to confirm the link between COVID-19 and cancer recurrence. However, an increased awareness on the potential risks for breast cancer patients with COVID-19 may lead to improved treatment strategies to prevent metastatic relapse.
    MeSH term(s) Betacoronavirus/immunology ; Breast Neoplasms/immunology ; Breast Neoplasms/pathology ; Breast Neoplasms/virology ; COVID-19 ; Coronavirus Infections/immunology ; Coronavirus Infections/virology ; Extracellular Traps/immunology ; Female ; Humans ; Lung/immunology ; Lung/pathology ; Neoplasm Recurrence, Local/immunology ; Neoplasm Recurrence, Local/pathology ; Neoplasm Recurrence, Local/virology ; Neutrophils/immunology ; Pandemics ; Pneumonia/immunology ; Pneumonia/virology ; Pneumonia, Viral/immunology ; Pneumonia, Viral/virology ; SARS-CoV-2 ; Tumor Microenvironment/immunology
    Keywords covid19
    Language English
    Publishing date 2020-10-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2015059-3
    ISSN 1465-542X ; 1465-5411
    ISSN (online) 1465-542X
    ISSN 1465-5411
    DOI 10.1186/s13058-020-01360-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Colorectal Cancer Stem Cells: An Overview of Evolving Methods and Concepts.

    De Angelis, Maria Laura / Francescangeli, Federica / Zeuner, Ann / Baiocchi, Marta

    Cancers

    2021  Volume 13, Issue 23

    Abstract: Colorectal cancer (CRC) represents one of the most deadly cancers worldwide. Colorectal cancer stem cells (cCSCs) are the driving units of CRC initiation and development. After the concept of cCSC was first formulated in 2007, a huge bulk of research has ...

    Abstract Colorectal cancer (CRC) represents one of the most deadly cancers worldwide. Colorectal cancer stem cells (cCSCs) are the driving units of CRC initiation and development. After the concept of cCSC was first formulated in 2007, a huge bulk of research has contributed to expanding its definition, from a cell subpopulation defined by a fixed phenotype in a plastic entity modulated by complex interactions with the tumor microenvironment, in which cell position and niche-driven signals hold a prominent role. The wide development of cellular and molecular technologies recent years has been a main driver of advancements in cCSCs research. Here, we will give an overview of the parallel role of technological progress and of theoretical evolution in shaping the concept of cCSCs.
    Language English
    Publishing date 2021-11-24
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers13235910
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Analysis of Dormancy-Associated Transcriptional Networks Reveals a Shared Quiescence Signature in Lung and Colorectal Cancer.

    Cuccu, Adriano / Francescangeli, Federica / De Angelis, Maria Laura / Bruselles, Alessandro / Giuliani, Alessandro / Zeuner, Ann

    International journal of molecular sciences

    2022  Volume 23, Issue 17

    Abstract: Quiescent cancer cells (QCCs) are a common feature of solid tumors, representing a major obstacle to the long-term success of cancer therapies. We isolated QCCs ex vivo from non-small cell lung cancer (NSCLC) and colorectal cancer (CRC) xenografts with a ...

    Abstract Quiescent cancer cells (QCCs) are a common feature of solid tumors, representing a major obstacle to the long-term success of cancer therapies. We isolated QCCs ex vivo from non-small cell lung cancer (NSCLC) and colorectal cancer (CRC) xenografts with a label-retaining strategy and compared QCCs gene expression profiles to identify a shared "quiescence signature". Principal Component Analysis (PCA) revealed a specific component neatly discriminating quiescent and replicative phenotypes in NSCLC and CRC. The discriminating component showed significant overlapping, with 688 genes in common including ZEB2, a master regulator of stem cell plasticity and epithelial-to-mesenchymal transition (EMT). Gene set enrichment analysis showed that QCCs of both NSCLC and CRC had an increased expression of factors related to stemness/self renewal, EMT, TGF-β, morphogenesis, cell adhesion and chemotaxis, whereas proliferating cells overexpressed Myc targets and factors involved in RNA metabolism. Eventually, we analyzed in depth by means of a complex network approach, both the 'morphogenesis module' and the subset of differentially expressed genes shared by NCSLC and CRC. This allowed us to recognize different gene regulation network wiring for quiescent and proliferating cells and to underpin few genes central for network integration that may represent new therapeutic vulnerabilities. Altogether, our results highlight common regulatory pathways in QCCs of lung and colorectal tumors that may be the target of future therapeutic interventions.
    MeSH term(s) Carcinoma, Non-Small-Cell Lung/genetics ; Cell Line, Tumor ; Colorectal Neoplasms/pathology ; Epithelial-Mesenchymal Transition/genetics ; Gene Expression Regulation, Neoplastic ; Gene Regulatory Networks ; Humans ; Lung/pathology ; Lung Neoplasms/metabolism
    Language English
    Publishing date 2022-08-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms23179869
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Dormancy, stemness, and therapy resistance: interconnected players in cancer evolution.

    Francescangeli, Federica / De Angelis, Maria Laura / Rossi, Rachele / Cuccu, Adriano / Giuliani, Alessandro / De Maria, Ruggero / Zeuner, Ann

    Cancer metastasis reviews

    2023  Volume 42, Issue 1, Page(s) 197–215

    Abstract: The biological complexity of cancer represents a tremendous clinical challenge, resulting in the frequent failure of current treatment protocols. In the rapidly evolving scenario of a growing tumor, anticancer treatments impose a drastic perturbation not ...

    Abstract The biological complexity of cancer represents a tremendous clinical challenge, resulting in the frequent failure of current treatment protocols. In the rapidly evolving scenario of a growing tumor, anticancer treatments impose a drastic perturbation not only to cancer cells but also to the tumor microenvironment, killing a portion of the cells and inducing a massive stress response in the survivors. Consequently, treatments can act as a double-edged sword by inducing a temporary response while laying the ground for therapy resistance and subsequent disease progression. Cancer cell dormancy (or quiescence) is a central theme in tumor evolution, being tightly linked to the tumor's ability to survive cytotoxic challenges, metastasize, and resist immune-mediated attack. Accordingly, quiescent cancer cells (QCCs) have been detected in virtually all the stages of tumor development. In recent years, an increasing number of studies have focused on the characterization of quiescent/therapy resistant cancer cells, unveiling QCCs core transcriptional programs, metabolic plasticity, and mechanisms of immune escape. At the same time, our partial understanding of tumor quiescence reflects the difficulty to identify stable QCCs biomarkers/therapeutic targets and to control cancer dormancy in clinical settings. This review focuses on recent discoveries in the interrelated fields of dormancy, stemness, and therapy resistance, discussing experimental evidences in the frame of a nonlinear dynamics approach, and exploring the possibility that tumor quiescence may represent not only a peril but also a potential therapeutic resource.
    MeSH term(s) Humans ; Neoplastic Stem Cells/pathology ; Neoplasms/drug therapy ; Neoplasms/genetics ; Neoplasms/metabolism ; Antineoplastic Agents/pharmacology ; Disease Progression ; Tumor Microenvironment
    Chemical Substances Antineoplastic Agents
    Language English
    Publishing date 2023-02-09
    Publishing country Netherlands
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 604857-2
    ISSN 1573-7233 ; 0167-7659
    ISSN (online) 1573-7233
    ISSN 0167-7659
    DOI 10.1007/s10555-023-10092-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Breast Cancer Stem Cells as Drivers of Tumor Chemoresistance, Dormancy and Relapse: New Challenges and Therapeutic Opportunities.

    De Angelis, Maria Laura / Francescangeli, Federica / Zeuner, Ann

    Cancers

    2019  Volume 11, Issue 10

    Abstract: Breast cancer is the most frequent cancer among women worldwide. Therapeutic strategies to prevent or treat metastatic disease are still inadequate although great progress has been made in treating early-stage breast cancer. Cancer stem-like cells (CSCs) ...

    Abstract Breast cancer is the most frequent cancer among women worldwide. Therapeutic strategies to prevent or treat metastatic disease are still inadequate although great progress has been made in treating early-stage breast cancer. Cancer stem-like cells (CSCs) that are endowed with high plasticity and self-renewal properties have been shown to play a key role in breast cancer development, progression, and metastasis. A subpopulation of CSCs that combines tumor-initiating capacity and a dormant/quiescent/slow cycling status is present throughout the clinical history of breast cancer patients. Dormant/quiescent/slow cycling CSCs are a key component of tumor heterogeneity and they are responsible for chemoresistance, tumor migration, and metastatic dormancy, defined as the ability of CSCs to survive in target organs and generate metastasis up to two decades after diagnosis. Understanding the strategies that are used by CSCs to resist conventional and targeted therapies, to interact with their niche, to escape immune surveillance, and finally to awaken from dormancy is of key importance to prevent and treat metastatic cancer. This review summarizes the current understanding of mechanisms involved in CSCs chemoresistance, dissemination, and metastasis in breast cancer, with a particular focus on dormant cells. Finally, we discuss how advancements in the detection, molecular understanding, and targeting of dormant CSCs will likely open new therapeutic avenues for breast cancer treatment.
    Language English
    Publishing date 2019-10-15
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers11101569
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Dietary Factors in the Control of Gut Homeostasis, Intestinal Stem Cells, and Colorectal Cancer.

    Francescangeli, Federica / De Angelis, Maria Laura / Zeuner, Ann

    Nutrients

    2019  Volume 11, Issue 12

    Abstract: Colorectal cancer (CRC) is the third commonly diagnosed cancer and the second leading cause of cancer-related deaths worldwide. Global CRC burden is expected to increase by 60% in the next decade, with low-income countries experiencing an escalation of ... ...

    Abstract Colorectal cancer (CRC) is the third commonly diagnosed cancer and the second leading cause of cancer-related deaths worldwide. Global CRC burden is expected to increase by 60% in the next decade, with low-income countries experiencing an escalation of CRC incidence and mortality in parallel to the adoption of western lifestyles. CRC incidence is also sharply increasing in individuals younger than 50 years, often presenting at advanced stages and with aggressive features. Both genetic and environmental factors have been recognized as major contributors for the development of CRC, the latter including diet-related conditions such as chronic inflammation and obesity. In particular, a diet rich in fat and sugars (Western-style diet, WSD) has been shown to induce multiple pathophysiological changes in the intestine linked to an increased risk of CRC. In this scenario, dietary factors have been recently shown to play novel unexpected roles in the regulation of intestinal stem cells (ISCs) and of the gut microbiota, which represent the two main biological systems responsible for intestinal homeostasis. Furthermore, diet is increasingly recognized to play a key role in the neoplastic transformation of ISCs and in the metabolic regulation of colorectal cancer stem cells. This review illustrates novel discoveries on the role of dietary components in regulating intestinal homeostasis and colorectal tumorigenesis. Particular focus is dedicated to new areas of research with potential clinical relevance including the effect of food components on ISCs and cancer stem cells (CSCs), the existence of CRC-specific microbial signatures and the alterations of intestinal homeostasis potentially involved in early-onset CRC. New insights on the role of dietary factors in intestinal regulation will provide new tools not only for the prevention and early diagnosis of CRC but also for improving the effectiveness of current CRC therapies.
    MeSH term(s) Colorectal Neoplasms ; Diet ; Gastrointestinal Microbiome ; Gastrointestinal Tract/physiology ; Homeostasis ; Humans ; Stem Cells/physiology
    Language English
    Publishing date 2019-12-03
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2518386-2
    ISSN 2072-6643 ; 2072-6643
    ISSN (online) 2072-6643
    ISSN 2072-6643
    DOI 10.3390/nu11122936
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: COVID-19: a potential driver of immune-mediated breast cancer recurrence?

    Francescangeli, Federica / De Angelis, Maria Laura / Zeuner, Ann

    Breast Cancer Res

    Abstract: Severe coronavirus disease 2019 (COVID-19) causes a hyperactivation of immune cells, resulting in lung inflammation. Recent studies showed that COVID-19 induces the production of factors previously implicated in the reawakening of dormant breast cancer ... ...

    Abstract Severe coronavirus disease 2019 (COVID-19) causes a hyperactivation of immune cells, resulting in lung inflammation. Recent studies showed that COVID-19 induces the production of factors previously implicated in the reawakening of dormant breast cancer cells such as neutrophil extracellular traps (NETs). The presence of NETs and of a pro-inflammatory microenvironment may therefore promote breast cancer reactivation, increasing the risk of pulmonary metastasis. Further studies will be required to confirm the link between COVID-19 and cancer recurrence. However, an increased awareness on the potential risks for breast cancer patients with COVID-19 may lead to improved treatment strategies to prevent metastatic relapse.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #895020
    Database COVID19

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  10. Article: Repeated Exposure to Subinfectious Doses of SARS-CoV-2 May Promote T Cell Immunity and Protection against Severe COVID-19

    De Angelis, Maria Laura / Francescangeli, Federica / Rossi, Rachele / Giuliani, Alessandro / De Maria, Ruggero / Zeuner, Ann

    Viruses. 2021 May 22, v. 13, no. 6

    2021  

    Abstract: Europe is experiencing a third wave of COVID-19 due to the spread of highly transmissible SARS-CoV-2 variants. A number of positive and negative factors constantly shape the rates of COVID-19 infections, hospitalization, and mortality. Among these ... ...

    Abstract Europe is experiencing a third wave of COVID-19 due to the spread of highly transmissible SARS-CoV-2 variants. A number of positive and negative factors constantly shape the rates of COVID-19 infections, hospitalization, and mortality. Among these factors, the rise in increasingly transmissible variants on one side and the effect of vaccinations on the other side create a picture deeply different from that of the first pandemic wave. Starting from the observation that in several European countries the number of COVID-19 infections in the second and third pandemic wave increased without a proportional rise in disease severity and mortality, we hypothesize the existence of an additional factor influencing SARS-CoV-2 dynamics. This factor consists of an immune defence against severe COVID-19, provided by SARS-CoV-2-specific T cells progressively developing upon natural exposure to low virus doses present in populated environments. As suggested by recent studies, low-dose viral particles entering the respiratory and intestinal tracts may be able to induce T cell memory in the absence of inflammation, potentially resulting in different degrees of immunization. In this scenario, non-pharmaceutical interventions would play a double role, one in the short term by reducing the detrimental spreading of SARS-CoV-2 particles, and one in the long term by allowing the development of a widespread (although heterogeneous and uncontrollable) form of immune protection.
    Keywords COVID-19 infection ; Severe acute respiratory syndrome coronavirus 2 ; T-lymphocytes ; disease severity ; immunity ; inflammation ; intestines ; memory ; mortality ; pandemic ; viruses ; Europe
    Language English
    Dates of publication 2021-0522
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2516098-9
    ISSN 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13060961
    Database NAL-Catalogue (AGRICOLA)

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