Characterization of mice deficient in interleukin‐1β converting enzyme
1997
Interleukin-1β converting enzyme (ICE) processes the inactive proIL-1β to the proinflammatory mature IL-1β. ICE belongs to a family of cysteine proteases that have been implicated in apoptosis. To address the biological functions of ICE, we generated ICE-deficient mice through gene targeting technology. ICE-deficient mice developed normally, appeared healthy, and were fertile. Peritoneal macrophages from ICE-deficient mice underwent apoptosis normally upon ATP treatment. Thymocytes from young ICE-deficient mice also underwent apoptosis when triggered by dexamethasone, gamma irradiation, or aging. ICE-deficient mice had a major defect in the production of mature IL-1β and had impaired IL-1α production on LPS stimulation in vitro and in vivo. ICE-deficient mice were resistant to LPS-induced endotoxic shock. J. Cell. Biochem. 64:27–32. © 1997 Wiley-Liss, Inc.
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