Epithelial-Mesenchymal Plasticity in Cancer Metastasis

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Author :
Publisher : MDPI
ISBN 13 : 3039367242
Total Pages : 512 pages
Book Rating : 4.0/5 (393 download)

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Book Synopsis Epithelial-Mesenchymal Plasticity in Cancer Metastasis by : Mohit Kumar Jolly

Download or read book Epithelial-Mesenchymal Plasticity in Cancer Metastasis written by Mohit Kumar Jolly and published by MDPI. This book was released on 2020-12-29 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have highlighted that epithelial-mesenchymal transition (EMT) is not only about cell migration and invasion, but it can also govern many other important elements such as immunosuppression, metabolic reprogramming, senescence-associated secretory phenotype (SASP), stem cell properties, therapy resistance, and tumor microenvironment interactions. With the on-going debate about the requirement of EMT for cancer metastasis, an emerging focus on intermediate states of EMT and its reverse process mesenchymal-epithelial transition (MET) offer new ideas for metastatic requirements and the dynamics of EMT/MET during the entire metastatic cascade. Therefore, we would like to initiate discussions on viewing EMT and its downstream signaling networks as a fulcrum of cellular plasticity, and a facilitator of the adaptive responses of cancer cells to distant organ microenvironments and various therapeutic assaults. We hereby invite scientists who have prominently contributed to this field, and whose valuable insights have led to the appreciation of epithelial-mesenchymal plasticity as a more comprehensive mediator of the adaptive response of cancer cells, with huge implications in metastasis, drug resistance, tumor relapse, and patient survival.

Epithelial-Mesenchymal Plasticity in Cancer Metastasis

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Author :
Publisher :
ISBN 13 : 9783039367252
Total Pages : 512 pages
Book Rating : 4.3/5 (672 download)

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Book Synopsis Epithelial-Mesenchymal Plasticity in Cancer Metastasis by : Mohit Kumar Jolly

Download or read book Epithelial-Mesenchymal Plasticity in Cancer Metastasis written by Mohit Kumar Jolly and published by . This book was released on 2020 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have highlighted that epithelial-mesenchymal transition (EMT) is not only about cell migration and invasion, but it can also govern many other important elements such as immunosuppression, metabolic reprogramming, senescence-associated secretory phenotype (SASP), stem cell properties, therapy resistance, and tumor microenvironment interactions. With the on-going debate about the requirement of EMT for cancer metastasis, an emerging focus on intermediate states of EMT and its reverse process mesenchymal-epithelial transition (MET) offer new ideas for metastatic requirements and the dynamics of EMT/MET during the entire metastatic cascade. Therefore, we would like to initiate discussions on viewing EMT and its downstream signaling networks as a fulcrum of cellular plasticity, and a facilitator of the adaptive responses of cancer cells to distant organ microenvironments and various therapeutic assaults. We hereby invite scientists who have prominently contributed to this field, and whose valuable insights have led to the appreciation of epithelial-mesenchymal plasticity as a more comprehensive mediator of the adaptive response of cancer cells, with huge implications in metastasis, drug resistance, tumor relapse, and patient survival.

The Epithelial-to-Mesenchymal Transition (EMT) in Cancer

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Author :
Publisher : MDPI
ISBN 13 : 3038427934
Total Pages : 261 pages
Book Rating : 4.0/5 (384 download)

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Book Synopsis The Epithelial-to-Mesenchymal Transition (EMT) in Cancer by : Joëlle Roche

Download or read book The Epithelial-to-Mesenchymal Transition (EMT) in Cancer written by Joëlle Roche and published by MDPI. This book was released on 2018-04-09 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "The Epithelial-to-Mesenchymal Transition (EMT) in Cancer" that was published in Cancers

Cellular and Phenotypic Plasticity in Cancer

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Publisher : Frontiers Media SA
ISBN 13 : 2889196623
Total Pages : 79 pages
Book Rating : 4.8/5 (891 download)

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Book Synopsis Cellular and Phenotypic Plasticity in Cancer by : Petranel Theresa Ferrao

Download or read book Cellular and Phenotypic Plasticity in Cancer written by Petranel Theresa Ferrao and published by Frontiers Media SA. This book was released on 2015-09-17 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of Epithelial-Mesenchymal-Transition (EMT) is known to result in a phenotype change in cells from a proliferative state to a more invasive state. EMT has been reported to drive the metastatic spread of various cancers and has also been associated with drug resistance to cytotoxics and targeted therapeutics. Recently phenotype switching akin to EMT has been reported in non-epithelial cancers such as metastatic melanoma. This process involves changes in EMT-Transcription Factors (EMT-TFs), suggesting that phenotype-switching may be common to several tumour types. It remains unclear as to whether the presence of both Epilthelial-like and Mesenchymal-like cells are a pre-requisite for phenotype switching within a tumour, how this heterogeneity is regulated, and if alteration of cell phenotype is sufficient to mediate migratory changes, or whether drivers of cell migration result in an associated phenotype switch in cancer cells. Similarly it has yet to be clarified if cells in an altered phenotype can be refractory to drug therapy or whether mediators of drug resistance induce a concurrent phenotypic change. Little is known today about the underlying genetic, epigenetic and transient changes that accompany this phenotypic switch and about the role for the tumor micro-environment in influencing it. Hence this is currently an area of speculation and keen interest in the Oncology field with wide-ranging translational implications. In this Frontiers Research Topic, we discuss our current understanding of these concepts in various cancer types including breast cancer, colorectal cancer and metastatic melanoma. This topic covers how these processes of cellular and phenotypic plasticity are regulated and how they relate to cancer initiation, progression, dormancy, metastases and response to cytotoxics or targeted therapies.

Characterizing the Multi-faceted Dynamics of Tumor Cell Plasticity

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Publisher : Frontiers Media SA
ISBN 13 : 2889665232
Total Pages : 336 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Characterizing the Multi-faceted Dynamics of Tumor Cell Plasticity by : Satyendra Chandra Tripathi

Download or read book Characterizing the Multi-faceted Dynamics of Tumor Cell Plasticity written by Satyendra Chandra Tripathi and published by Frontiers Media SA. This book was released on 2021-03-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Role of the Tumor Microenvironment and Epithelial-mesenchymal Plasticity in Prostate Cancer Progression and Metastasis

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Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.:/5 (919 download)

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Book Synopsis The Role of the Tumor Microenvironment and Epithelial-mesenchymal Plasticity in Prostate Cancer Progression and Metastasis by : Marcus Andrew Ruscetti

Download or read book The Role of the Tumor Microenvironment and Epithelial-mesenchymal Plasticity in Prostate Cancer Progression and Metastasis written by Marcus Andrew Ruscetti and published by . This book was released on 2015 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: PTEN is one of the most commonly deleted tumor suppressor genes in human prostate cancer. Our group previously demonstrated that Pten deletion in the murine prostate epithelium recapitulates the disease progression seen in human prostate cancer, culminating in invasive adenocarcinoma. In addition to Pten loss endowing prostate cells with enhanced proliferative capacity, we found that Pten loss also led to the upregulation of inflammatory pathways, including Csf-1 and Il1b expression, within the prostate epithelium. These inflammatory cytokines recruit myeloid-derived suppressor cells (MDSCs) into the prostate, which subsequently promote an immune-suppressive tumor microenvironment and thereby facilitate tumor progression. Targeting immune-responsive pathways with the CSF-1R inhibitor GW2580 successfully inhibits MDSC infiltration and delays tumor progression. As Pten deletion alone does not produce distant macrometastasis, we surveyed additional pathways altered in human metastatic prostate cancer, and found that the RAS/MAPK pathway was significantly elevated in metastatic lesions. Indeed, when we combined Pten deletion with Kras activation in the prostate epithelium (Pb-Cre+/-;PtenL/L;KrasG12D/+) (CPK), we observed macrometastasis to the lungs and liver. Interestingly, within the prostate, we observed an epithelial-mesenchymal transition (EMT) phenotype, accompanied by significant upregulation of the EMT transcription factor Snail. Importantly, genetic deletion of Snail in CPK mice prevented distant macrometastasis, providing a mechanistic link between EMT and metastasis. To study the dynamic regulation of the EMT process, we crossed CPK mice with Vimentin-GFP reporter mice (CPKV), and were able to isolate populations of epithelial, EMT, and mesenchymal-like prostate tumor cells. We demonstrate that EMT and mesenchymal-like tumor cells have enhanced stem-like and tumor-initiating capacities and exhibit cellular plasticity in vivo. HMGA2, a chromatin remodeling protein, is significantly upregulated in EMT and mesenchymal-like tumor cells, as well as in human metastatic castration-resistant prostate cancer (mCRPC). Knockdown of Hmga2, or suppressing Hmga2 expression with the HDAC inhibitor LBH589, inhibits epithelial-mesenchymal plasticity and stemness activities in vitro and dramatically reduces prostate tumor burden and distant metastasis in vivo. Importantly, LBH589 in combination with castration significantly prolongs survival by targeting castration-resistant mesenchymal-like tumor cells and preventing mCRPC. LBH589 treatment in combination with androgen deprivation therapy may therefore be a promising treatment for patients with mCRPC.

Defining Epithelial-Mesenchymal Plasticity in Cancer Using Single-Cell Genomics

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Defining Epithelial-Mesenchymal Plasticity in Cancer Using Single-Cell Genomics by : David Cook

Download or read book Defining Epithelial-Mesenchymal Plasticity in Cancer Using Single-Cell Genomics written by David Cook and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Epithelial-mesenchymal plasticity (EMP) describes the interconversion of cells between epithelial and mesenchymal phenotypes. During the epithelial-mesenchymal transition (EMT), epithelial cells lose defining characteristics, such as stable cell-cell junctions, and gain the ability to migrate and invade through extracellular matrices. This plasticity contributes to tumour progression, promoting therapy resistance and immune cell evasion. Despite its importance, defining molecular features of this plasticity have largely remained elusive due to the limited scale of most studies. Here, I present my studies applying comparative single-cell genomics to map transcriptional changes associated with the EMT in diverse experimental conditions and EMP in tumours, I identify regulatory features associated with these dynamics, and explore opportunities to pharmacologically restrict them. This work provides critical steps towards building quantitative models of EMP, which will inform effective strategies to restrict these dynamics in cancer and improve patient prognosis.

Circulating Tumor Cells in Breast Cancer Metastatic Disease

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Author :
Publisher : Springer
ISBN 13 : 9783030358075
Total Pages : 167 pages
Book Rating : 4.3/5 (58 download)

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Book Synopsis Circulating Tumor Cells in Breast Cancer Metastatic Disease by : Roberto Piñeiro

Download or read book Circulating Tumor Cells in Breast Cancer Metastatic Disease written by Roberto Piñeiro and published by Springer. This book was released on 2021-05-02 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is aimed to summarise the key aspects of the role of circulating tumour cells (CTCs) in breast cancer, with special attention to their contribution to tumour progression and establishment of metastatic disease. We aim to give a clear overview of the knowledge about CTCs, framed in the context of breast cancer, by analysing basic and clinical research carried out so far. In a broader sense, we will address what are the main clinical needs of this disease based on its molecular heterogeneity (subtypes) and lay out the knowledge and understanding that CTCs are giving about it and how they are contributing and can still improve the better monitoring and management of breast cancer patients. We will discuss the evidences of the use of CTCs as a tool to monitor cancer progression and therapy response, based on the prognostic and predictive value they have, as well as a tool to unravel mechanisms of resistance to therapy and to identify new biomarkers allowing to predict therapy success. Moreover, we will analyse the main aspects of ongoing clinical trials and how they can contribute to determine the clinical utility of CTCs as a breast cancer biomarker. We will also touch upon general knowledge or basic notions of the biology of the metastatic process in epithelial cancers, in order to understand the origin and biology of CTCs. In this sense, we will pay special attention to EMT (epithelial to mesenchymal transition), dormancy and minimal residual disease, three key aspects that determine the outcome of the disease. We will also cover general aspects on the isolation and characterization techniques applies to the study of CTCs, and also the possibilities that the study of CTCs, as a biomarker with biological function, is opening in terms of understanding the biology of metastatic cells and the identification of therapeutic targets based on the functional and molecular characterization of CTCs. Lastly, we will try to foresee the future of CTCs in terms of clinical application and implementation in the clinical routine.

The Epithelial-to Mesenchymal Transition

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Author :
Publisher :
ISBN 13 : 9781071607817
Total Pages : pages
Book Rating : 4.6/5 (78 download)

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Book Synopsis The Epithelial-to Mesenchymal Transition by : Kyra Campbell

Download or read book The Epithelial-to Mesenchymal Transition written by Kyra Campbell and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Tumor Cell Metabolism

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Publisher : Springer
ISBN 13 : 3709118247
Total Pages : 373 pages
Book Rating : 4.7/5 (91 download)

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Book Synopsis Tumor Cell Metabolism by : Sybille Mazurek

Download or read book Tumor Cell Metabolism written by Sybille Mazurek and published by Springer. This book was released on 2015-01-19 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The four sections of this book cover cell and molecular biology of tumor metabolism, metabolites, tumor microenvironment, diagnostics and epigenetics. Written by international experts, it provides a thorough insight into and understanding of tumor cell metabolism and its role in tumor biology. The book is intended for scientists in cancer cell and molecular biology, scientists in drug and diagnostic development, as well as for clinicians and oncologists.

Epithelial—Mesenchymal Interactions in Cancer

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Publisher : Birkhäuser
ISBN 13 : 3034890702
Total Pages : 304 pages
Book Rating : 4.0/5 (348 download)

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Book Synopsis Epithelial—Mesenchymal Interactions in Cancer by : Itzhak D. Goldberg

Download or read book Epithelial—Mesenchymal Interactions in Cancer written by Itzhak D. Goldberg and published by Birkhäuser. This book was released on 2013-03-07 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contribution of epithelia-mesenchyme interaction to normal development (eg., tissue formation) and to neoplasia has become a subject of increasing interest to scientists because of recent progress in deciphering the molecular signals that mediate this interaction. Clearly, some of the same types of molecules (eg., growth factors and their receptors, proteolytic enzymes, cell adhesion molecules, and structural proteins of the extracellular matrix) mediate exchange of information between epithelia and mesenchyme during normal development and malignant growth. However, defects in the regulation of this exchange appear to contribute to malignancy by allowing growth promoting, invasogenic, and angiogenic factors to accumulate within the microenvironment of the tumor. For example, recent studies suggest that abnormal interactions between tumor epithelial cells and stromal mesenchymal cells contribute to the overproduction and accumulation of scatter factor (hepatocyte growth factor), an invasogenic and angiogenic cytokine, in certain types of tumor. The production and and activation of type IV collagenase, a matrix-degrading enzyme required for tumor cell invasion, appears to require intimate cooperation between tumor and stromal cells. The material contained in this volume highlights the state-of-the-art of knowledge of the molecular mechanisms by which epithelia and mesenchyme collaborate, and the abnormalities in these mechanisms that may lead to the development of cancer.

Coming Full Circle: Epithelial Plasticity and the Natural History of Metastasis

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Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (98 download)

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Book Synopsis Coming Full Circle: Epithelial Plasticity and the Natural History of Metastasis by : Nicole Marie Aiello

Download or read book Coming Full Circle: Epithelial Plasticity and the Natural History of Metastasis written by Nicole Marie Aiello and published by . This book was released on 2016 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary cause of cancer-related deaths is metastasis— the spread of cancer cells to distant organs— and yet the mechanisms underlying this process remain elusive due to the difficulty in detecting early metastatic events, which are rare, stochastic and microscopic. To investigate the cellular and molecular mechanisms of metastasis, I utilized an autochthonous mouse model of pancreatic cancer (KPCY) in which all tumor cells are genetically labeled with yellow fluorescent protein (YFP). The YFP lineage label allows for the detection and isolation of disseminated tumor cells as they delaminate from epithelial structures within the primary tumor, invade into the stroma and circulation, and colonize distal organs. Using this system, I characterized the development of metastatic lesions from single disseminated cells to grossly macroscopic lesions in the murine liver. I found that gross metastases closely resembled primary tumors in terms of differentiation and microenvironment— these large lesions are well differentiated, containing primarily epithelial tumor cells, and accumulate stroma consisting of myofibroblasts, leukocytes and extracellular matrix (ECM). In contrast, single disseminated cells tend to be poorly differentiated and lack any association with stromal cells, and must build up a microenvironment around them as they grow. Despite the presumably protective stroma surrounding large lesions, gross metastasis was significantly reduced with chemotherapy, while single cells were unaffected. Interestingly, residual lesions were enriched for epithelial features, suggesting that EMT confers chemosensitivity in this context. I also used the KPCY model to investigate the molecular mechanisms of epithelial-mesenchymal transition (EMT), which is widely considered to be the first step in the metastatic cascade. The YFP lineage label made it possible to identify and isolate tumor cells that have undergone EMT for transcriptional profiling. Surprisingly, I found that in a majority of pancreatic tumors, conventional transcriptional repressors were not involved in EMT. Although a mesenchymal transcriptional program was significantly enriched in cells that had undergone this “non-canonical” mechanism of EMT, the epithelial program was downregulated at the protein level by a mechanism involving protein internalization. Because cells retain both epithelial and mesenchymal properties during non-canonical EMT, this phenomenon represents an attractive explanation for the ability of tumor cells to cycle between epithelial and mesenchymal states and adapt to the changing microenvironment on their way to metastatic sites. The journey from primary tumor to metastatic site requires cancer cells to overcome many obstacles and a better understanding of how they navigate the numerous steps of the metastatic cascade could open the door to desperately needed anti-metastatic therapies.

Molecular and Cell Biology of Cancer

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Publisher : Springer
ISBN 13 : 3030118126
Total Pages : 216 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Molecular and Cell Biology of Cancer by : Rita Fior

Download or read book Molecular and Cell Biology of Cancer written by Rita Fior and published by Springer. This book was released on 2019-06-27 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook takes you on a journey to the basic concepts of cancer biology. It combines developmental, evolutionary and cell biology perspectives, to then wrap-up with an integrated clinical approach. The book starts with an introductory chapter, looking at cancer in a nut shell. The subsequent chapters are detailed and the idea of cancer as a mass of somatic cells undergoing a micro-evolutionary Darwinian process is explored. Further, the main Hanahan and Weinberg “Hallmarks of Cancer” are revisited. In most chapters, the fundamental experiments that led to key concepts, connecting basic biology and biomedicine are highlighted. In the book’s closing section all of these concepts are integrated in clinical studies, where molecular diagnosis as well as the various classical and modern therapeutic strategies are addressed. The book is written in an easy-to-read language, like a one-on-one conversation between the writer and the reader, without compromising the scientific accuracy. Therefore, this book is suited not only for advanced undergraduates and master students but also for patients or curious lay people looking for a further understanding of this shattering disease

Approaching Complex Diseases

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Publisher : Springer Nature
ISBN 13 : 3030328570
Total Pages : 493 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Approaching Complex Diseases by : Mariano Bizzarri

Download or read book Approaching Complex Diseases written by Mariano Bizzarri and published by Springer Nature. This book was released on 2020-04-17 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume – for pharmacologists, systems biologists, philosophers and historians of medicine – points to investigate new avenues in pharmacology research, by providing a full assessment of the premises underlying a radical shift in the pharmacology paradigm. The pharmaceutical industry is currently facing unparalleled challenges in developing innovative drugs. While drug-developing scientists in the 1990s mostly welcomed the transformation into a target-based approach, two decades of experience shows that this model is failing to boost both drug discovery and efficiency. Selected targets were often not druggable and with poor disease linkage, leading to either high toxicity or poor efficacy. Therefore, a profound rethinking of the current paradigm is needed. Advances in systems biology are revealing a phenotypic robustness and a network structure that strongly suggest that exquisitely selective compounds, compared with multitarget drugs, may exhibit lower than desired clinical efficacy. This appreciation of the role of polypharmacology has significant implications for tackling the two major sources of attrition in drug development, efficacy and toxicity. Integrating network biology and polypharmacology holds the promise of expanding the current opportunity space for druggable targets.

The TGF-[beta] Family

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Publisher : CSHL Press
ISBN 13 : 0879697520
Total Pages : 1108 pages
Book Rating : 4.8/5 (796 download)

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Book Synopsis The TGF-[beta] Family by : Rik Derynck

Download or read book The TGF-[beta] Family written by Rik Derynck and published by CSHL Press. This book was released on 2008 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transforming growth factor-[beta] (TGF-[beta]), identified nearly three decades ago, is a secreted polypeptide that functions in critical cell cycle processes, including cellular proliferation, differentiation, and development: It belongs to a large protein family that, in humans, contains 33 members, including activins, inhibins, bone morphogenetic proteins, growth and differentiation factors, and Mullerian inhibiting substance. This volume draws on the world's leading laboratories to comprehensively cover all aspects of the biology of TGF-[beta] and related factors. In addition to providing historical and background information, it describes the cell biology and signaling pathways of TGF-[beta] members in detail, including the roles of TGF-[beta] factors in the development and physiology of humans and model organisms. The last few chapters are devoted to the role of TGF-[beta] members in cancer and other diseases, as well as the possibilities for therapeutics based on knowledge of signaling pathways and macromolecular structures. It serves as a comprehensive reference work for both specialists and researchers less familiar with the field.

Rise and Fall of Epithelial Phenotype

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Publisher : Springer Science & Business Media
ISBN 13 : 0387286713
Total Pages : 341 pages
Book Rating : 4.3/5 (872 download)

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Book Synopsis Rise and Fall of Epithelial Phenotype by : Pierre Savagner

Download or read book Rise and Fall of Epithelial Phenotype written by Pierre Savagner and published by Springer Science & Business Media. This book was released on 2007-07-05 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epithelial phenotype is a dynamic stage of differentiation that can be modulated during several physiological or pathological events. The rapid conversion to a mesenchymal-like phenotype is called an epithelial-mesenchymal transition (EMT). The Rise and Fall of Epithelial Phenotype is the first book to comprehensively introduce the concept of EMT. The first part of this volume describes main examples and models and explains their physiological relevance. These examples include hydra morphogenesis, gastrulation in mouse, drosophila and sea urchin, as well as neural crest cell migration and heart morphogenesis in vertebrates. Part two reviews in detail, specific EMT molecular pathways covering extracellular induction, transduction and transcription response and modulation of cell-cell adhesion structures. It emphasizes new specific pathways with potential medical applications. EMTs can also be linked to pathological events such as wound healing and cancer progression, as detailed in this section of the book.

Circulating Tumor Cells in Breast Cancer Metastatic Disease

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Author :
Publisher : Springer Nature
ISBN 13 : 3030358054
Total Pages : 177 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Circulating Tumor Cells in Breast Cancer Metastatic Disease by : Roberto Piñeiro

Download or read book Circulating Tumor Cells in Breast Cancer Metastatic Disease written by Roberto Piñeiro and published by Springer Nature. This book was released on 2020-04-17 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is aimed to summarise the key aspects of the role of circulating tumour cells (CTCs) in breast cancer, with special attention to their contribution to tumour progression and establishment of metastatic disease. We aim to give a clear overview of the knowledge about CTCs, framed in the context of breast cancer, by analysing basic and clinical research carried out so far. In a broader sense, we will address what are the main clinical needs of this disease based on its molecular heterogeneity (subtypes) and lay out the knowledge and understanding that CTCs are giving about it and how they are contributing and can still improve the better monitoring and management of breast cancer patients. We will discuss the evidences of the use of CTCs as a tool to monitor cancer progression and therapy response, based on the prognostic and predictive value they have, as well as a tool to unravel mechanisms of resistance to therapy and to identify new biomarkers allowing to predict therapy success. Moreover, we will analyse the main aspects of ongoing clinical trials and how they can contribute to determine the clinical utility of CTCs as a breast cancer biomarker. We will also touch upon general knowledge or basic notions of the biology of the metastatic process in epithelial cancers, in order to understand the origin and biology of CTCs. In this sense, we will pay special attention to EMT (epithelial to mesenchymal transition), dormancy and minimal residual disease, three key aspects that determine the outcome of the disease. We will also cover general aspects on the isolation and characterization techniques applies to the study of CTCs, and also the possibilities that the study of CTCs, as a biomarker with biological function, is opening in terms of understanding the biology of metastatic cells and the identification of therapeutic targets based on the functional and molecular characterization of CTCs. Lastly, we will try to foresee the future of CTCs in terms of clinical application and implementation in the clinical routine.