Each week, the hosts demonstrate a different technique.
In contrast to autoantibodies, CD4 T cell clones isolated from myocarditis heart lesions of DQ8+NOD mice predominantly recognized α-MyHC and adoptively transferred disease into immunodeficient hosts, demonstrating that α-MyHC-reactive CD4 T cells cause myocarditis [ 13].
Cancer stem cells (CSCs) are defined by their ability to (i) fully recapitulate the tumor of origin when transplanted into immunodeficient mouse hosts, and (ii) self-renew, demonstrated by their ability to be serially transplanted.
Furthermore, as proof-of-principle, we demonstrate that human artery segments pretreated ex vivo using siRNA-loaded nanoparticles are refractory to MHC class II molecule induction on endothelial cells for at least 4 to 6 weeks after transplantation into immunodeficient mouse hosts.
Compared with newborn NF90 mice, newborn NF90 mice demonstrate severe impairment of IL-2 expression.
This is despite the fact that transplanted knockout animals generally maintain the marked changes in levels of blood cholesterols and lipoproteins characteristic of the host knockout mouse, demonstrating that these systemic changes are not directly responsible for disease development.
Interestingly, microglia of donor origin (CD45.1+) were found in RPE flat mounts of Sucnr1−/− host mice (CD45.2+), demonstrating that microglial cells which are found in the retina at the time of assessment (20 weeks post-graft), initially originated from the bone marrow.
Of interest is that we have recently reported that ADAM17-null mice demonstrate enhanced host resistance, including decreased hematogenous spread of bacterial to the lung, during E. coli-mediated abdominal sepsis [22].
Experimental studies in knock-out mice have demonstrated that host PAI-1 is an essential factor of the host microenvironment, promoting early steps of skin carcinoma progression.
The model of gamma-irradiated mice can also demonstrate the responses of immunocompromised host to intracellular bacterial infection.
