Journal
BIOSCIENCE REPORTS
Volume 38, Issue -, Pages -Publisher
PORTLAND PRESS LTD
DOI: 10.1042/BSR20180705
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Funding
- Consejo Nacional de Ciencia y Tecnologia (CONACYT) [61334]
- PAPIIT-Universidad Nacional Autonoma de Mexico (UNAM) [IN 213711, IG200616, IN211217]
- CONACYT [280263]
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Pathogens have developed particular strategies to infect and invade their hosts. Amongst these strategies' figures themodulation of several components of the innate immune system participating in early host defenses, such as the coagulation and complement cascades, as well as the fibrinolytic system. The components of the coagulation cascade and the fibrinolytic system have been proposed to be interfered during host invasion and tissue migration of bacteria, fungi, protozoa, and more recently, helminths. One of the components that has been proposed to facilitate pathogen migration is plasminogen (Plg), a protein found in the host's plasma, which is activated into plasmin (Plm), a serine protease that degrades fibrin networks and promotes degradation of extracellular matrix (ECM), aiding maintenance of homeostasis. However, pathogens possess Plg-binding proteins that can activate it, therefore taking advantage of the fibrin degradation to facilitate establishment in their hosts. Emergence of Plg-binding proteins appears to have occurred in diverse infectious agents along evolutionary history of host-pathogen relationships. The goal of the present review is to list, summarize, and analyze different examples of Plg-binding proteins used by infectious agents to invade and establish in their hosts. Emphasis was placed on mechanisms used by helminth parasites, particularly taeniid cestodes, where enolase has been identified as a major Plg-binding and activating protein. A new picture is starting to arise about how this glycolytic enzyme could acquire an entirely new role as modulator of the innate immune system in the context of the host-parasite relationship.
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