Cross Talk between Lymph Node Lymphatic Endothelial Cells and T Cells in Inflammation and Cancer PDF Download
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Author: Sonia Elhadad
Publisher: Frontiers Media SA
ISBN: 2889453510
Category :
Languages : en
Pages : 102
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Book Description
Lymphocytes constantly survey the lymph nodes in search for potential infection by a pathogen. They enter the afferent lymphatic vessel that serves as a conduit to transport the motile lymphocytes to the draining lymph node. Lymphatic vessels (LVs) are present in most vascularized tissues. They are traditionally regarded as passive conduits for soluble antigens and leukocytes. Afferent LVs begin as blind ended capillaries, which give rise to collecting vessels that merge and connect with draining lymph nodes (dLNs). Initial lymphatic capillaries are composed of Lymphatic Endothelial Cells (LECs) connected by discontinuous cell junctions, which join to form larger collecting lymphatic vessels, and ultimately feed into the LN subcapsular sinus. Within the LN, LECs are localized to the subcapsular, cortical, and medullary sinuses, where they interact with incoming and exiting leukocytes. LECs, and in general LN stromal cells, have emerged in the recent years as active players in the immune response. In support to this,studies have shown that the immune response generated during inflammation and under pathologic conditions is accompanied by modeling of the LVs and generation of new lymphatics, a process known as lymphangiogenesis. These facts strongly suggest that LECs and stromal LN cells in general, are not inert players but rather are part of the immune response by organizing immune cells movement, exchanging information and supplying survival factors. The purpose of this research topic is to review the role of the LECs during immune homeostasis and cancer. Considering the critical role of lymphangiogenesis in many pathologies like chronic and acute inflammation, autoimmunity, wound healing, graft rejection, and tumor metastasis, it is important to understand the molecular mechanisms that govern the cross talks between the LECs and immune cells during homeostasis and inflammation.
Author: Sonia Elhadad
Publisher: Frontiers Media SA
ISBN: 2889453510
Category :
Languages : en
Pages : 102
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Book Description
Lymphocytes constantly survey the lymph nodes in search for potential infection by a pathogen. They enter the afferent lymphatic vessel that serves as a conduit to transport the motile lymphocytes to the draining lymph node. Lymphatic vessels (LVs) are present in most vascularized tissues. They are traditionally regarded as passive conduits for soluble antigens and leukocytes. Afferent LVs begin as blind ended capillaries, which give rise to collecting vessels that merge and connect with draining lymph nodes (dLNs). Initial lymphatic capillaries are composed of Lymphatic Endothelial Cells (LECs) connected by discontinuous cell junctions, which join to form larger collecting lymphatic vessels, and ultimately feed into the LN subcapsular sinus. Within the LN, LECs are localized to the subcapsular, cortical, and medullary sinuses, where they interact with incoming and exiting leukocytes. LECs, and in general LN stromal cells, have emerged in the recent years as active players in the immune response. In support to this,studies have shown that the immune response generated during inflammation and under pathologic conditions is accompanied by modeling of the LVs and generation of new lymphatics, a process known as lymphangiogenesis. These facts strongly suggest that LECs and stromal LN cells in general, are not inert players but rather are part of the immune response by organizing immune cells movement, exchanging information and supplying survival factors. The purpose of this research topic is to review the role of the LECs during immune homeostasis and cancer. Considering the critical role of lymphangiogenesis in many pathologies like chronic and acute inflammation, autoimmunity, wound healing, graft rejection, and tumor metastasis, it is important to understand the molecular mechanisms that govern the cross talks between the LECs and immune cells during homeostasis and inflammation.
Author: Noha Mousaad Elemam
Publisher: Frontiers Media SA
ISBN: 2832534929
Category : Medical
Languages : en
Pages : 144
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Book Description
One of the current challenges and failures of immunotherapy is in part due to the complex tumor microenvironment (TME) that provides a formidable barrier to immune infiltration and function. The TME consists of various cell types (tumor cells, fibroblasts, endothelial cells, and immune cells), soluble signaling molecules (cytokines, growth factors, and chemokines), and extracellular matrix. On another note, metabolic disturbances in various TME components, such as hypoxia, acidosis, lactate accumulation, and nutrient deprivation, can play a critical role in the tumor progression. Furthermore, genetic and epigenetic dysfunctions are known to be part of the characteristics of cancer development. The immune cells could have a pro- or anti-tumor role in the TME, and their activity might vary in the context of different cancers. Both innate and adaptive immune cells interact with tumor cells through direct contact or through chemokines and cytokines signaling, shaping the tumor's activity and response to therapy.
Author: Beth A. Jirón Tamburini
Publisher: Frontiers Media SA
ISBN: 288963325X
Category :
Languages : en
Pages : 205
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Book Description
Author: Santiago Cal
Publisher: Humana Press
ISBN: 9781493975945
Category : Medical
Languages : en
Pages : 352
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Book Description
This volume explores the role of proteases in various catalytic classes and cellular processes associated with cancer. The chapters in this book cover topics such as encoding proteolytic enzymes, cleavage sites of proteases, functional catalytic domains of MMPs, zymography, angiogenesis and lymphangiogenesis, genetic and epigenetic alterations of metallopeptidases, and methods to target metalloproteinases. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Comprehensive and cutting edge, Proteases and Cancer: Methods and Protocols is a valuable resource for clinical researchers across numerous fields such as molecular and cellular biology, oncology, biochemistry, and chemistry. This book is also useful for PhD students in the various disciples of health sciences.
Author: Giuliano Mariani
Publisher: Springer Science & Business Media
ISBN: 8847027667
Category : Medical
Languages : en
Pages : 306
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Book Description
Although lymphoscintigraphy was originally introduced into clinical routine for identification of the cause of peripheral edema, more recently it has been widely applied for radioguided biopsy of the sentinel lymph node in patients with solid cancers. The procedure is now considered crucial for adequate planning of oncologic surgery in a growing number of cancers. This atlas presents a collection of richly illustrated teaching cases that demonstrate the clinical relevance and impact of lymphoscintigraphy in different pathologic conditions. After introductory chapters on the anatomy, physiology, and pathophysiology of lymphatic circulation, the role of lymphoscintigraphy in differential diagnosis of peripheral edema and characterization of intracavitary lymph effusions is addressed. The principal focus of the book, however, is on the use of lymphoscintigraphic mapping for radioguided sentinel node biopsy in cutaneous melanoma and cancers at a range of anatomic sites. The most commonly observed lymphoscintigraphic patterns are depicted, and anatomic variants and technical pitfalls of the procedure receive careful attention. The role of tomographic multimodality imaging is also considered. The atlas will be an excellent learning tool for residents in nuclear medicine and other specialists with an interest in the field.
Author: Estela Maris Muñoz
Publisher: Frontiers Media SA
ISBN: 2832550827
Category : Medical
Languages : en
Pages : 177
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Book Description
The functional anatomy of organisms is maintained by the coordination of different systems, that often rely on particular interactions between specialized cells and between macromolecules. The immune system works with the circulatory and the lymphatic systems to protect most of the organs. However, some organs are considered immune privileged due to the presence of highly selective and regulated barriers, such as the blood-brain barrier (BBB) within the brain. The BBB controls periphery-brain molecule exchange and prevents immune effector cells from entering the homeostatic brain. BBB-associated elements, such as endothelial cells, pericytes, astrocytes, and microglia, potentially can function as antigen-presenting cells (APC). Pathological scenarios that induce dysfunction of the BBB and its associated cells may lead to the infiltration of lymphocytes crossing over from the blood to brain. Similarly, traumas can also enable B and T lymphocytes to pass bidirectionally between the CNS and the periphery, via the meningeal lymphatic vessels which drain into the cervical lymph nodes. Research in animals and in humans has revealed that B and T cells are involved in the progression of neurological diseases. It has been showed that under particular conditions, T cells establish themselves and become resident in the brain (T RM cells), from where they can either exert beneficial or detrimental effects on brain function. Amazing efforts have been made to further comprehend interactions between brain-specific cells and peripheral immune cells, and especially their roles and impact on the onset, progression, and eventual resolution of diverse brain pathologies.
Author: Bharat B. Aggarwal
Publisher: Springer
ISBN: 3034808372
Category : Medical
Languages : en
Pages : 489
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Book Description
This volume examines in detail the role of chronic inflammatory processes in the development of several types of cancer. Leading experts describe the latest results of molecular and cellular research on infection, cancer-related inflammation and tumorigenesis. Further, the clinical significance of these findings in preventing cancer progression and approaches to treating the diseases are discussed. Individual chapters cover cancer of the lung, colon, breast, brain, head and neck, pancreas, prostate, bladder, kidney, liver, cervix and skin as well as gastric cancer, sarcoma, lymphoma, leukemia and multiple myeloma.
Author: Marie-Caroline Dieu-Nosjean
Publisher: Humana Press
ISBN: 9781493987085
Category : Medical
Languages : en
Pages : 289
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Book Description
This volume explores the various methods used to study tertiary lymphoid structures (TLS) in pathological situations. Pre-clinical models are also discussed in detail to show how TLS structure, development, and maintenance can be targeted and studied in vivo. The chapters in this book cover topics such as humans and mice; strategies to quantify TLS in order to use it in stained tissue sections; classifying a gene signature form fixed and paraffin-embedded tissues; and development of murine inflammatory models to help look at TLS in the context of infection or malignancy. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and thorough, Tertiary Lymphoid Structures: Methods and Protocols is a valuable resource that increases the reader’s knowledge on immune functions and how they will pave the way to future therapeutic applications.
Author: Bruce Alberts
Publisher:
ISBN: 9780815332183
Category : Cytology
Languages : en
Pages : 0
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Book Description
Author: Barrett Rollins
Publisher: Springer Science & Business Media
ISBN:
Category : Medical
Languages : en
Pages : 346
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Book Description
Since the introduction of microscopy, pathologists have noted tumor infiltration by inflammatory cells and presumed that this represents the host's attempt to reject its tumor. Recent advances in the molecular biology of inflammation have revealed the signals involved in attracting inflammatory cells to tumors and, for the most part, these signals are mediated by chemokines and their receptors. Chemokines are low molecular weight proteins that attract and activate specific subsets of leukocytes to the exclusion of others.
