Humanized IL-6 and IL-6 receptor

摘要

Docket 125OA-WO Mice that comprise a replacement of endogenous mouse IL-6 and/or IL-6 receptor genes are described, and methods for making and using the mice. Mice comprising a replacement at an endogenous IL-6Ra locus of mouse ectodomain encoding sequence with human ectodomain-encoding sequence is provided. Mice comprising a human IL-6 gene under control of mouse IL-6 regulatory elements is also provided, including mice that have a replacement of mouse IL-6-encoding sequence with human IL-6-encoding sequence at an endogenous mouse IL-6 locus.