Download or read book In Vitro and in Vivo Characterization of Cancer Stem Cells in Primary Colorectal Cancer Models written by Rohit Gehani and published by . This book was released on 2010 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biotechnology and Bioinformatics Thesis.

Download or read book In Vivo and in Vitro Characterization of Colorectal Cancer Cells written by Cornelis Petrus Henricus Josephus Verstijnen and published by . This book was released on 1987 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Colon Cancer Cells written by Mary Moyer and published by Elsevier. This book was released on 2012-12-02 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colon Cancer Cells brings together fundamental research and clinically relevant issues in the cell biology of colon cancer. This book is composed of five parts encompassing 21 chapters that specifically describe the initiation and progression of colon cancer cells. After briefly dealing with the major issues in colorectal carcinoma, this book goes on presenting the in vitro and in vivo models of colon carcinogenesis. This topic is followed by a discussion on the history of the development and characterization of commonly used colon cancer cell lines. The following parts describe the biochemical and immunological features and hormones in the colon. These parts also consider the studies on human colon tumors xenografted into nude mice and the biology and treatment of colorectal cancer metastasis. Discussions on the application of human monoclonal antibodies to tumor detection; the expression of blood group-related carbohydrates by normal, premalignant, and malignant colonic tissues; and the correlation of antigen variability in colon carcinoma with certain diagnostic and prognostic parameters are also included in these parts. The concluding part examines various therapeutic strategies and their potential in improving patient management with advanced colon carcinoma. Researchers, clinicians, and students interested in the biology of colon cancer development and in gastrointestinal cell biology will find this book invaluable.

Download or read book Prominin 1 CD133 New Insights on Stem Cancer Stem Cell Biology written by Denis Corbeil and published by Springer Science & Business Media. This book was released on 2012-11-19 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: ​​​​​​​Prominin-1 or otherwise known as CD133 is a glycoprotein that is present in humans and mice. Since the first description of prominin in 1997, in mouse neuroepithelial cells and in human hematopoietic stem cells as AC133 antigen, this molecule has aroused a large interest especially, as a stem cell marker, that gave rise to an ever growing body of publications and more recently its expression in cancer stem cells. Controversies as to its role as a cancer stem and its detection in different models, as well as its use as a prognostic marker have emerged. Yet, beyond its use as a stem cell and cancer stem cell marker, prominin-1/CD133 displays unique biological features and appears of importance in other processes like for example in retinal biogenesis. Indeed, this five-transmembrane plasma membrane glycoprotein, which marks membrane protrusions is associated with several essential processes like cell polarity, asymmetric cell division and membrane remodeling. We propose to review current knowledge about this intriguing molecule and present pertinent information to determine the biological role of prominins and assess their importance in medicine and cancer research. The primary audience for this book is geared towards scientists and researchers with interest in cancer stem cells, stem cells, cell biology, neurobiology, and regenerative medicine.

Download or read book Tumor Organoids written by Shay Soker and published by Humana Press. This book was released on 2017-10-20 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cancer cell biology research in general, and anti-cancer drug development specifically, still relies on standard cell culture techniques that place the cells in an unnatural environment. As a consequence, growing tumor cells in plastic dishes places a selective pressure that substantially alters their original molecular and phenotypic properties.The emerging field of regenerative medicine has developed bioengineered tissue platforms that can better mimic the structure and cellular heterogeneity of in vivo tissue, and are suitable for tumor bioengineering research. Microengineering technologies have resulted in advanced methods for creating and culturing 3-D human tissue. By encapsulating the respective cell type or combining several cell types to form tissues, these model organs can be viable for longer periods of time and are cultured to develop functional properties similar to native tissues. This approach recapitulates the dynamic role of cell–cell, cell–ECM, and mechanical interactions inside the tumor. Further incorporation of cells representative of the tumor stroma, such as endothelial cells (EC) and tumor fibroblasts, can mimic the in vivo tumor microenvironment. Collectively, bioengineered tumors create an important resource for the in vitro study of tumor growth in 3D including tumor biomechanics and the effects of anti-cancer drugs on 3D tumor tissue. These technologies have the potential to overcome current limitations to genetic and histological tumor classification and development of personalized therapies.

Download or read book Cancer Stem Cell Resistance to Targeted Therapy written by Cristina Maccalli and published by Springer. This book was released on 2019-06-04 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents an up-dated summary of the state of the art of the characterization of cancer stem cell/ cancer initiating cell (CSC/CIC) properties. An overview of the definition and biological properties of CSCs/CICs as well as the role of these cells in determining the resistance to standard and immune-based therapies is provided. It also discusses limitations in the achievement of a definitive biological characterization of CSCs/CICs due to their high extent of plasticity and heterogeneity that is also mutually driven by the interaction of these cells with the tumor microenvironment. The limitations in targeting CSCs/CICs with immunotherapy are also explained together with explorative combination approaches that could increase the susceptibility of these cells to the recognition by immune cells. This book is conceived for a broad audience, including students, teachers, scientific experts. The critical revision of available results in terms of immunological profile of CSCs/CICs and the efficacy in targeting these cells by immunological approaches, results in a comprehensive and up to date recapitulation of the field and provides interesting suggestions on how to focus future investigations in order to assess the role of CSCs/CICs as prognostic and predictive biomarkers of responsiveness to therapies for cancer patients.

Download or read book Isolation and Characterization of Cancer Stem Cells in Non Small Cell Lung Cancer written by Kit-Man Sunny Wong and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Isolation and Characterization of Cancer Stem Cells in Non-small Cell Lung Cancer" by Kit-man, Sunny, Wong, 王傑民, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Tumor heterogeneity has long been observed and recognized as a challenge to cancer therapy. The cancer stem cell (CSC) model is one of the hypotheses proposed to explain such a phenomenon. A specific cancer stem cell marker has not been determined for non-small cell lung cancers (NSCLC), preventing the definitive evaluation of whether the biology of NSCLC is governed by the CSC model. This study aimed to analyze the expression of candidate CSC markers and using the identified putative marker, to isolate CSC and determine the applicability of the CSC model in NSCLC. The expression or activities of four putative stem cell markers, CD24, CD44, CD133 and aldehyde dehydrogenase 1 (ALDH1) were measured by flow cytometry in eight NSCLC cell lines before and after chemotherapy for 24 hours. Markers with increased expression after treatment were considered potential CSC markers and used for isolating tumor cell subpopulations from the untreated cell lines by fluorescence-activated cell sorting (FACS). Confirmatory analyses using widely acceptable methodology were performed to test for CSC properties in the marker+ and marker- subpopulations. Isolated subpopulations were further characterized by functional and phenotypic studies. Flow cytometry showed amongst the 4 markers, only ALDH1 expression was significantly enhanced by chemotherapeutic treatment, suggesting ALDH1 could be a CSC marker. Untreated ALDH1+ cells formed significantly more and larger cell spheres in non-adherent, serum-free conditions than ALDH1- cells. Likewise, higher in vitro tumorigenic ability was observed in ALDH1+ subset using colony formation assay. Furthermore, a higher resistance to cytotoxic drugs was observed in ALDH1+ compared to ALDH1- cells. In vivo studies also showed ALDH1+ cells showed higher tumorigenicity than ALDH1- cells; as few as 2,500 ALDH1+ cells formed tumor in SCID mice which were serially transplantable to 2nd and 3rd recipients, while no tumor was formed from ALDH- cells with even ten times the number of cells. Also, expression analysis revealed higher expression of the pluripotency genes, OCT4, NANOG, BMI1 and SOX9, in ALDH1+ cells. In view of previous studies reporting CD44 as a CSC marker in lung cancer, double marker selection of putative CSC was performed to compare ALDH1+CD44+ and ALDH1-CD44+ subpopulations. Results of the spheroid body formation assay and cisplatin treatment experiments revealed the ALDH1+CD44+ subpopulation possessed higher self-renewal ability and chemo-resistance. Cell migration and invasion assays showed differences between the ALDH1+CD44+ and ALDH1- CD44+ subpopulations. The significance of these observations require further investigation. In conclusion, the result showed that ALDH1 could be a marker for NSCLC stem cells as evidenced by enhanced self-renewal and differentiation abilities in ALDH1+ subpopulation. Furthermore, this study observed the presence of at least two potential stem cell subpopulations in NSCLC cells with differential selfrenewal, chemotherapy resistance and cell mobility properties. Further investigations are required to validate th

Download or read book Characterization of Tumour initiating Cells in Human Colorectal Cancer written by Antonija Kreso and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enteric Glia written by Brian D. Gulbransen and published by Biota Publishing. This book was released on 2014-07-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The enteric nervous system (ENS) is a complex neural network embedded in the gut wall that orchestrates the reflex behaviors of the intestine. The ENS is often referred to as the “little brain” in the gut because the ENS is more similar in size, complexity and autonomy to the central nervous system (CNS) than other components of the autonomic nervous system. Like the brain, the ENS is composed of neurons that are surrounded by glial cells. Enteric glia are a unique type of peripheral glia that are similar to astrocytes of the CNS. Yet enteric glial cells also differ from astrocytes in many important ways. The roles of enteric glial cell populations in the gut are beginning to come to light and recent evidence implicates enteric glia in almost every aspect of gastrointestinal physiology and pathophysiology. However, elucidating the exact mechanisms by which enteric glia influence gastrointestinal physiology and identifying how those roles are altered during gastrointestinal pathophysiology remain areas of intense research. The purpose of this e-book is to provide an introduction to enteric glial cells and to act as a resource for ongoing studies on this fascinating population of glia. Table of Contents: Introduction / A Historical Perspective on Enteric Glia / Enteric Glia: The Astroglia of the Gut / Molecular Composition of Enteric Glia / Development of Enteric Glia / Functional Roles of Enteric Glia / Enteric Glia and Disease Processes in the Gut / Concluding Remarks / References / Author Biography

Download or read book The Cancer Stem Cell Niche written by Susie Nilsson and published by Academic Press. This book was released on 2021-02-09 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cancer Stem Cell Niche, Volume Five in the Advances in Stem Cells and their Niches series, highlights new advances in the field, with this new volume presenting interesting chapters on a variety of timely topics, including Acute lymphoblastic leukemia and the bone marrow microenvironment, Stem cell niches in bone and their roles in cancer metastasis, The role of vasculature in cancer stem cell niches, The lung cancer stem cell niche, The prostate cancer stem cell niche: Genetic drivers and therapeutic approaches, Impact of prostate cancer stem cell niches on prostate cancer tumorigenesis and progression, The testicular cancer stem cell niche. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Advances in Stem Cells and their Niches series Includes the latest information on the Cancer Stem Cell Niche

Download or read book Characterization of Breast Cancer Stem Cells written by and published by . This book was released on 2004 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular markers which identify putative breast epithelial stem cells have been report Attention has focused on the possibility that certain clinical aspects of breast cancer could result from transformed stem cells residing in the malignant tumor. Breast cancer may therefore originate from neoplastic transformation of normal breast epithelial stem cells. These transformed stem cells may exist in the tumor as rare cells with properties which drive multiple aspects of tumorigenesis. The predictions of this model included slower cell cycle progression greater resistance to DNA damage, increased in vitro invasion, and in vivo tumorigenesis. The application tested the hypothesis that transformed stem cells drive multiple aspects of breast tumorigenesis by functionally characterizing their biological properties. The hypothesis was tested by sorting of putative breast cancer stem cell populations followed by cell cycle analysis, in vitro and in vivo proliferation. and invasion assays, and sensitivity to chemotherapy and radiation induced DNA damage. Putative cancer stem cells generally exhibited slower cell cycle progression, greater resistance to DNA damage, and increased tumor formation. However, the degree of stem-like properties of these cells varied widely depending on the line from which they were isolated.

Download or read book Nanopharmaceuticals Principles and Applications Vol 3 written by Vinod Kumar Yata and published by Springer Nature. This book was released on 2020-08-19 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the third volume on this subject and focuses on the recent advances of nanopharmaceuticals in cancer, dental, dermal and drug delivery applications and presents their safety, toxicity and therapeutic efficacy. The book also includes the transport phenomenon of nanomaterials and important pathways for drug delivery applications. It goes on to explain the toxicity of nanoparticles to different physiological systems and methods used to assess this for different organ systems using examples of in vivo systems.

Download or read book Molecular Analysis of Cancer written by Jacqueline Boultwood and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 20 years, technological advances in molecular biology have proven invaluable to the understanding of the pathogenesis of human cancer. The application of molecular technology to the study of cancer has not only led to advances in tumor diagnosis, but has also provided markers for the assessment of prognosis and disease progression. The aim of Molecular Ana- sis of Cancer is to provide a comprehensive collection of the most up-to-date techniques for the detection of molecular changes in human cancer. Leading researchers in the field have contributed chapters detailing practical pro- dures for a wide range of state-of-the-art techniques. Molecular Analysis of Cancer includes chapters describing techniques for the identification of chromosomal abnormalities and comprising: fluor- cent in situ hybridization (FISH), spectral karyotyping (SKY), comparative genomic hybridization (CGH), and microsatellite analysis. FISH has a pro- nent role in the molecular analysis of cancer and can be used for the detection of numerical and structural chromosomal abnormalities. The recently described SKY, in which all human metaphase chromosomes are visualized in specific colors, allows for the definition of all chromosomal rearrangements and marker chromosomes in a tumor cell. Protocols for the detection of chromosomal re- rangements by PCR and RT-PCR are described, as well as the technique of DNA fingerprinting, a powerful tool for studying somatic genetic alterations in tumorigenesis.

Download or read book Characterization of Breast Cancer Stem Cells Addendum written by and published by . This book was released on 2005 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular markers which identify putative breast epithelial stem cells have been reported. Certain clinical aspects of breast cancer could result from transformed stem cells in the malignant tumor. Breast cancer may therefore originate from neoplastic transformation of normal breast epithelial stem cells. These transformed stem cells exist in the tumor as rare cells with properties that drive aspects of tumorigenesis. This model predicts slower cell cycle progression, greater resistance to DNA damage, increased in vitro invasion, and in vivo tumorigenesis. We tested the hypothesis that transformed stem cells drive multiple aspects of breast tumorigenesis by functionally characterizing their biological properties. The hypothesis was tested by sorting of putative breast cancer stem cell populations followed by cell cycle analysis, in vitro and in vivo proliferation and invasion assays, and sensitivity to chemotherapy and radiation induced DNA damage. Putative cancer stem cells generally exhibited slower cell cycle progression, greater resistance to DNA damage, and increased tumor formation. However, the stem-like properties of these cells varied widely depending on the line from which they were isolated.

Download or read book Spheroid Culture in Cancer Research 1991 written by Rolf Bjerkvig and published by CRC Press. This book was released on 2017-11-22 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spheroid Culture in Cancer Research describes the various techniques now available for establishing spheroid tissue culture, including spheroid culture from normal tissues and from tumor cell lines. The book also describes how the spheroid system can be used to study interactions between normal and malignant cells. Microenvironmental conditions in spheroids and how this micromilieu may promote cellular heterogeneity and histiotypic structures not observed in corresponding monolayer cultures are discussed. The biological importance of oxygen tension, pH gradients, diffusions of nutrients, and cell-cell communication in spheroids are also examined. The book will be profoundly important to researchers in experimental chemotherapy, radiotherapy, immunotherapy, and hyperthermia.

Download or read book Patient Derived Tumor Xenograft Models written by Rajesh Uthamanthil and published by Academic Press. This book was released on 2016-10-13 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Patient Derived Tumor Xenograft Models: Promise, Potential and Practice offers guidance on how to conduct PDX modeling and trials, including how to know when these models are appropriate for use, and how the data should be interpreted through the selection of immunodeficient strains. In addition, proper methodologies suitable for growing different type of tumors, acquisition of pathology, genomic and other data about the tumor, potential pitfalls, and confounding background pathologies that occur in these models are also included, as is a discussion of the facilities and infrastructure required to operate a PDX laboratory. Offers guidance on data interpretation and regulatory aspects Provides useful techniques and strategies for working with PDX models Includes practical tools and potential pitfalls for best practices Compiles all knowledge of PDX models research in one resource Presents the results of first ever global survey on standards of PDX development and usage in academia and industry

Download or read book The Heterogeneity of Cancer Metabolism written by Anne Le and published by Springer. This book was released on 2018-06-26 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic alterations in cancer, in addition to being the fundamental drivers of tumorigenesis, can give rise to a variety of metabolic adaptations that allow cancer cells to survive and proliferate in diverse tumor microenvironments. This metabolic flexibility is different from normal cellular metabolic processes and leads to heterogeneity in cancer metabolism within the same cancer type or even within the same tumor. In this book, we delve into the complexity and diversity of cancer metabolism, and highlight how understanding the heterogeneity of cancer metabolism is fundamental to the development of effective metabolism-based therapeutic strategies. Deciphering how cancer cells utilize various nutrient resources will enable clinicians and researchers to pair specific chemotherapeutic agents with patients who are most likely to respond with positive outcomes, allowing for more cost-effective and personalized cancer therapeutic strategies.