Words similar to tecs
Example sentences for: tecs
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The decrease in DP cells is associated with increased apoptosis in both pre-DP and DP cells [ 29 ] . As the defects at the TN to DP transition in these mutants are caused by defective TEC function rather than thymocyte-intrinsic defects, these mice represent an opportunity to study the role of TECs in promoting this transition.
The most well defined role for TECs in directly affecting thymocyte differentiation is to mediate positive selection via expression of MHC molecules [ 11 19 20 21 22 ] . However, it is still unclear whether TECs directly promote specific stages of thymocyte differentiation during stages that do not involve MHC-TCR interactions, or whether their role at other stages is primarily to promote cell growth and /or survival.
The abnormal cell death and proliferation patterns in the Hoxa3,Pax1 compound mutant fetal thymocytes might be caused in part by observed reductions in the transcription levels of the cytokines IL-7 and SCF produced by TECs.
Using semi-quantitative RT-PCR, we analyzed the expression of two cytokines that are produced by TECs, IL-7 and SCF, in pooled, genotype-matched E14.
The current study further supports a role for TECs in regulating both thymocyte proliferation and survival during the DN-DP transition, and suggests that proliferation and apoptosis of TN4 and DP cells are regulated independently.