[PDF] Molecular And Cellular Basis Of Hematopoietic Stem Cells Maintenance And Differentiation eBook

Author : Khanh Linh Duong
Publisher :
Page : 190 pages
File Size : 48,65 MB
Release : 2014
Category : Bone marrow
ISBN :

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The blood system consists of two main lineages: myeloid and lymphoid. The myeloid system consists of cells that are part of the innate immune response while the lymphoid system consist of cells that are part of humoral response. These responses protect our bodies from foreign pathogens. Thus, malignancies in these systems often cause complications and mortality. Scientists world wide have been researching alternatives to treat hematologic disorders and have explored induced pluripotent stem cells (iPSCs) and the conversion of one cell type to another. First, iPS cells were generated by overexpression of four transcription factors: Oct4, Sox2, Klf4 an cMyc. These cells closely resemble embryonic stem cells (ESCs) at the molecular and cellular level. However, the efficiency of cell conversion is less than 0.1%. In addition, many iPS colonies can arise from the same culture, but each has a different molecular signature and potential. Identifying the appropriate iPS cell lines to use for patient specific therapy is crucial. Here we demonstrate that our system is highly efficient in generating iPS cell lines, and cell lines with silent transgenes are most efficient in differentiating to different cell types . Second, we are interested in generating hematopoietic stem cells (HSCs) from fibroblasts directly, without going through the pluripotent state, to increase efficiency and to avoid complications associated with a stem cell intermediate. However, a robust hematopoietic reporter system remains elusive. There are multiple hematopoietic reporter candidates, but we demonstrate that the CD45 gene was the most promising. CD45 is expressed early during hematopoiesis on the surface of HSCs; and as HSCs differentiate CD45 levels increase. Furthermore, the CD45 reporter is only active in hematopoietic cells. We were able to confirm the utility of the CD45 reporter using an in vitro and an in vivo murine model. In conclusion, The goal of this research was to expand the knowledge of stem cell reprogramming, specifically the reprogramming of iPS cells. Furthermore, it is our desire that the CD45 reporter system will undergo further validation and find utility in clinical and cell therapy environments.

Author : Amittha Wickrema
Publisher : Springer Science & Business Media
Page : 260 pages
File Size : 26,32 MB
Release : 2008-12-26
Category : Medical
ISBN : 0387858164

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Although much is known with respect to blood cell formation and function, many new concepts in the areas of the regulation of hematopoietic stem cell commitment and the subsequent survival, proliferation, and differentiation of progenitors have been elucidated in the last five years. Our understanding of the microenvironment where stem cells reside and commit to distinct blood types (the niche) has grown significantly in recent years. Furthermore, blood cells have been used as the key model system to study microRNA function and the role of microRNAs in the transformation of normal cells into cancer cells. The current volume Molecular Basis of Hematopoiesis, edited by Amittha Wickrema & Barbara Kee, provides the most recent developments in the area in addition to a chapter on the utilization of basic science knowledge for the treatment of blood diseases. Each chapter in this book has been written and edited by faculty in major academic and research institutions around the world, who are pushing the frontiers of research in this important area.

Author : Motonari Kondo
Publisher : Springer Science & Business Media
Page : 260 pages
File Size : 50,79 MB
Release : 2009-12-04
Category : Medical
ISBN : 1603273476

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In the summer of 1988, my developmental biology professor announced to the class that hematopoietic stem cells (HSCs) had finally been purified. Somehow, I never forgot the professor’s words. When I started working in Dr. Irv Weissman’s labo- tory at Stanford as a postdoctoral fellow, I realized that the findings mentioned by the professor were from Weissman’s laboratory and had been published in a 1988 edition of the journal Science. It has been over 20 years since the publication of that seminal paper, and since then tremendous advances in understanding the biology and maturation of HSCs, namely the process of hematopoiesis, which includes lymphocyte development, have been made. These discoveries were made possible in part by advancements in technology. For example, recent availability of user friendly fluorescence activated cell sorting (FACS) machines and monoclonal an- bodies with a variety of fluorescent labels has allowed more scientists to sort and analyze rare populations in the bone marrow, such as HSCs. All classes of hematopoietic cells are derived from HSCs. Stem cell biology draws enormous attention not only from scientists, but also from ordinary people because of the tremendous potential for development of new therapeutic application to diseases that currently lack any type of effective therapy. Thus, this type of “regenerative medicine” is a relatively new and attractive field in both basic science and clinical medicine.

Author : Louis M. Pelus
Publisher : Springer Nature
Page : 284 pages
File Size : 47,18 MB
Release : 2022-10-18
Category : Science
ISBN : 1071626795

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This detailed volume collects updates on the technical advances in hematopoietic stem cell research and incorporates new techniques focused on the molecular/genetic, cellular, and whole organism levels. Exploring methods that apply stress to hematopoiesis, the book also contains chapters focused on better understanding the role of hematopoietic niches and their cellular components, as well as in vivo models that test and quantitate stem cell function and are key to further development of therapeutic applications. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step and readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and up-to-date, Hematopoietic Stem Cells: Methods and Protocols serves as a valued addition to laboratories focused on understanding hematopoietic stem cell biology and the therapeutic advances that can be derived from it.

Author : Meng Zhao
Publisher : Springer Nature
Page : 218 pages
File Size : 50,49 MB
Release : 2024-01-17
Category : Medical
ISBN : 9819974712

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This book renders a comprehensive understanding of hematopoietic stem cells (HSCs) from their embryonic development through adult maintenance to aging, in the studies conducted in zebrafish and mammals. Hematopoiesis provides a paradigm for understanding the development, maintenance, regeneration, aging and malignant transformation of mammalian organs. Sitting at the apex of the hematopoiesis hierarchy tree, HSCs orchestrate their proliferation, self-renewal, and differentiation to produce all the blood cell lineages throughout life, which represents the best example for somatic stem cell studies. In this book, key regulatory mechanisms for HSC self-renewal and differentiation are overviewed in an array of fields including epigenetics, metabolism and microenvironment regulation. It also highlights the HSC heterogeneity and clonal dynamics from the recent advanced single-cell technologies. This book elaborates on the research history of HSC studies and reveals how the insights from HSC studies shed light on their clinic application. It presents great value from the bench to the clinic.

Author : Daniel R. Marshak
Publisher :
Page : 568 pages
File Size : 25,43 MB
Release : 2001
Category : Medical
ISBN :

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Stem cells are the focus of intense interest from a growing, multidisciplinary community of investigators with new tools for isolating and characterizing these elusive cell types. This volume, which features contributions from many of the worlds leading laboratories, provides a uniquely broad and authoritative basis for understanding the biology of stem cells and the current excitement about their potential for clinical exploitation. It is an essential work of reference for investigators in embryology, hematology, and neurobiology, and their collaborators in the emerging field of regenerative medicine.

Author :
Publisher : Academic Press
Page : 258 pages
File Size : 38,82 MB
Release : 2020-04-08
Category : Science
ISBN : 0128128909

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Stem Cell Proliferation and Differentiation, Volume 138, the latest release in the Current Topics in Developmental Biology series, highlights new advances in the field, with this new volume presenting interesting chapters. Each chapter is written by an international board of authors. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Current Topics in Developmental Biology series Includes the latest information on stem cell proliferation and differentiation

Author : Monica Neagu
Publisher : Bentham Science Publishers
Page : 338 pages
File Size : 16,51 MB
Release : 2016-09-16
Category : Science
ISBN : 1681083310

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Experts in the field of cellular biology have shown that the reactivation of pluripotency inherent in all cells can allow us to reprogram cells into a specific cell line. This reprogramming paradigm is steadily enhancing our understanding of cell differentiation processes and cellular identity. Consequently, new prospects for cellular therapies of diseases and in vivo regeneration have risen. Stem Cells Between Regeneration and Tumorigenesis focuses on organ specific molecular pathways that trigger two opposite ways that a stem cell can grow (regeneration and neoplasia). Chapters provide a balanced set of information about tissue regeneration and tumorigenesis in several tissues and biological systems (the nervous, circulatory, oral, skin, digestive and endocrine systems). Additional reviews of the immunological role in regulating the two stem cell growth processes and the role of genomics and proteomics in understanding these processes round up the contents of this monograph. Readers of this book will gain the following key benefits: -an insight into the complexity and controversy surrounding the established dual stem cell behavior paradigm (regeneration versus tumorigenesis) -an understanding of the intricate cellular processes such as stem cells maintenance -background knowledge of optimizing tailored therapy in personalized and regenerative medicine Stem Cells Between Regeneration and Tumorigenesis is a useful resource for advanced graduates and researchers undertaking courses in molecular biology and personalized medicine, as well as interns involved in stem cell research programs.