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Haematopoietic stem cell transplantation was initiated in the early 1970’s by pioneers studying radiation-induced bone marrow damage and blood transfusion. Since that time there have been over one million transplants and over 34 million donors registered with the world marrow donor association. This special edition of Frontiers in Immunology highlights the research achievements which led to the curative therapy of haematopoietic stem cell transplantation (HSCT) but also reviews the ongoing complications such as graft versus host disease (GvHD) and infection caused by the procedure. Early animal and human studies are reviewed as well as those which led to the development of changes in trans...
Dr. Correa is the founder of Lumos Biomed Consulting and holds shares in Cryovida Stem Cell Bank (Mexico). Dr O’Brien holds patents related to regeneration technology and was a co-founder of SurgaColl Technologies. All other Topic Editors declare no competing interests with regard to the Research Topic subject.
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The term allorecognition refers to the series of mechanisms used by an individual’s immune system to distinguish its own cells and tissues from those of another individual belonging to the same species. During evolution, different cells and molecules of both innate and adaptive immune systems have been selected to recognize and respond to antigens expressed by allogeneic cells, but not autologous cells (alloantigens). This research topic focuses on allorecognition by lymphocytes of the adaptive immune system and its involvement in rejection or tolerance of allogeneic transplants. T and B cells recognizing alloantigens via specific receptors become activated and undergo proliferation and di...
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Tetraspanins are small (20-50 kDa) integral membrane proteins with four transmembrane domains that have an intrinsic propensity to associate with other membrane proteins and lipids giving rise to the formation of specific tetraspanin-enriched microdomains (TEMs), also referred to as “The tetraspanin web”. In mammals, the tetraspanin family comprises of 33 different members, with the majority of the members being abundantly expressed in almost all cell types, including leukocytes which are responsible for innate and adaptive immunity as well as in other cells that play pivotal roles in immune responses, such as endothelial or stromal cells. Therefore, through the wide range of specific molecular interactions in which they are engaged, tetraspanins influence many processes of up-most relevance in the development, physiology and pathology of the immune system, including the control of immune cell morphology, signaling, adhesion, migration, invasion, fusion, infections and cancer.