Campus alert status is yellow: For the latest campus alert status, news and resources, visit

Search Close Search
Search Close Search
Page Menu

Michael A Brehm






UMassMed Faculty Page


Title: Genetically Modified Non-Human Animals and Methods Relating to Complement Dependent Cytotoxicity. UMMS16-63; Patent Pending. 

  • The present invention provides a genetically modified immunodeficient mouse, wherein the genome of the mouse comprises a repaired C5 complement component structural gene such that the 5 genetically modified immunodeficient mouse expresses the C5 complement component structural gene and is characterized by an intact complement system. The present invention relates to immunodeficient non-obese diabetic (NOD), A/J, A/He, AKR, DBA/2, NZB/B1N, BlO.D2/oSn and other mouse strains genetically modified to restore complement-dependent cytotoxicity which is lacking in the unmodified immunodeficient mice.

Title: Development of NOD.Cg-Prkdc<scid> Il2rg<tm1Wjl> Tlr4lps-del Sz/Sz ("NSG Tlr4 Mice"). UMMS13-61; Patent Pending. 

  • This invention provides a immunodeficient mouse model based on the NOD strain (referred to as NSG and NRG mice) that can be engrafted with functional human immune systems, including adaptive and innate immune systems. These mice completely lack adaptive immune cells such as T and B cells, as well as NK cells.  To study the response of human innate immune cells to the TLR agonist LPS in the absence of a murine innate immune response, these NSG mice completely lack TLR4 on their innate immune cells.


Innovation TopicsResearch ToolsAnimal ModelsImmunodeficient diseasesType I DiabetesType II Diabetes