T cell development runs marrow deep

Democracy runs deep

Most westerners would probably think that the roots of democracy lie in Ancient Athens, when the city state established the process by which all citizens, well, men of Athenian parentage, had an equal say in the decisions of the state. This model of ‘equally shared’ consensus decision making has wobbled, been ignored and often forgotten in intervening history but the concept has endured. But wa...

Donor T-cell alloreactivity against host thymic epithelium limits T-cell development after bone marrow transplantation.

Acute graft-versus-host disease (aGVHD) impairs thymus-dependent T-cell regeneration in recipients of allogeneic bone marrow transplants through yet to be defined mechanisms. Here, we demonstrate in mice that MHC-mismatched donor T cells home into the thymus of unconditioned recipients. There, activated donor T cells secrete IFN-gamma, which in turn stimulates the programmed cell death of thymi...

Development of a Stable Cell Line, Overexpressing Human T-cell Immunoglobulin Mucin 1

Background: Recent researches have demonstrated that human T-cell immunoglobulin mucin 1 (TIM-1) glycoprotein plays important roles in regulation of autoimmune and allergic diseases, as well as in tumor immunity and response to viral infections. Therefore,targeting TIM-1 could be a potential therapeutic approach against such diseases. Objectives: In this study, we aimed to express TIM-1 protein...

Marrow Transplantation with SCID After Nonablative Allogeneic T Cell Repertoire Development in Humans

Exclusive development of T cell neoplasms in mice transplanted with bone marrow expressing activated Notch alleles

Notch is a highly conserved transmembrane protein that is involved in cell fate decisions and is found in organisms ranging from Drosophila to humans. A human homologue of Notch, TAN1, was initially identified at the chromosomal breakpoint of a subset of T-cell lymphoblastic leukemias/lymphomas containing a t(7;9) chromosomal translocation; however, its role in oncogenesis has been unclear. Usi...