Journal
CURRENT OPINION IN CHEMICAL BIOLOGY
Volume 26, Issue -, Pages 1-7Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cbpa.2015.01.002
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The main purpose of this perspective is to build on the unexpected outcomes of previous laboratory experiments using antibody agonists to raise questions concerning how activation of a given receptor can be involved in inducing differentiation of cells along different pathways some of which may even derive from different lineages. While not yet answered, the question illustrates how the advent of agonists not present in nature may give a different dimension to the important problem of signal transduction. Thus, if one studies a natural agonist-receptor system one can learn details about its signal transduction pathway. However, if one has a set of orthogonal agonists, one may learn about the yet undiscovered potential of the system that, in the end, may necessitate refinements to the currently used models. Thus, we wonder why receptors conventionally linked to a given pathway induce a different pattern of differentiation when agonized in another way.
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