Origin of anti-tumor immunity failure in mammals

• 作者: Bubanovic, Ivan.
• 出版: New York : Springer Science and Business ©2004.
• 稽核項: 1 online resource (xv, 253 pages) :illustrations.
• 標題: Evolution. , Immunological aspects. , Mammals immunology. , SCIENCE Life Sciences -- Anatomy & Physiology. , Mammals , Life SciencesAnatomy & Physiology. , Neoplasms immunology. , Immune response , Mammals Immunology. , Immune response Regulation. , Evolution , Pregnancy immunology. , SCIENCE , Tumors , Immunology. , Electronic books. , Neoplasms , Regulation. , immunology. , Pregnancy Immunological aspects. , Tumors Immunological aspects. , Pregnancy
• ISBN: 030648630X , 9780306486302
• ISBN: 9780306486296 , 0306486296
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• 附註: Includes bibliographical references and index. Introduction -- 1: The Vertebrate Immune System -- 2: Alloimmunity and Pregnancy -- 3: Anti-tumor Immunity Failure in Mammals -- 4: Immunosurveillance Mechanisms of the Fetoplacental Unit -- 5: Tumors in Mammals and Non-mammalian Classes of Vertebrates -- References -- Index.
• 摘要: The body of any animal can be viewed as a society or "ecosystem" whose individual members are cells, reproducing by cell division and organized into collaborative assemblies or tissues. In this "ecosystem", the cells are born, live and die under various forms of selection pressure such as territorial limitation, population size, source of nutrients provided, infectious agents, etc. The body is a highly organized society of cells whose main task is the maintenance of homeostasis of the whole organism. The failure of control mechanisms which make the cell the unit of society, marking the beginning of its "asocial" behaviour, is most frequently a malignant alteration. This process is not abrupt, nor is it based on a single event. It is, rather, a long-term process characterized mainly by mutation, competition and natural selection operating within the population of cells. The basic mechanisms controlling the cell sociability represent the first defence line against the altered cells, while the second line of defence is supposed to be made up of the immune system cells. Speaking in Darwinian terms, within the "ecosystem" of an organism, cells of the immune system operate as "predators" of the altered and mutated cells or cells infected by the intracellular parasites. The biological phenomena whose mechanisms are, at present, explored and largely understood, certainly had their own evolution. Searching for the origin and details of the evolution of "advanced solutions" as well as selection pressures that might justify their emergence and existence, we often fail to see that many such phenomena are, in fact, co-evolutionary by-products of "evolutionary innovations". In other words, the evolutionary emergence of "advanced solutions" is sometimes, if not always, accompanied by certain by-products and by the co-evolution of compensatory mechanisms acting as a counterbalance to these. An example of the evolution of "advanced solutions" is the evolution of adoptive immunity
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