Exhaustion of CD8pos central memory regulatory T cell differentiation is involved in renal allograft rejection by Florian Kälble, Jonas Leonhard, Jonas Leonhard, Martin Zeier, Oliver Zivanovic, Matthias Schaier, Andrea Steinborn

“…We were investigating whether changed differentiation of CCR7posCD45RAposCD31pos recent thymic emigrant (RTE) cells via CD45RAnegCD31pos memory (CD31pos memory) cells (pathway 1), via direct proliferation (pathway 2), or via CCR7posCD45RA+CD31neg resting mature naïve (MN) cells (pathway 3) into CD45RAnegCD31neg memory (CD31neg memory) cells affects the CD8pos Treg/Tresp ratio or identifies a CD8pos Treg/Tresp subset that predicts or confirms renal allograft rejection.ResultsWe found that RTE Treg differentiation via pathway 1 was age-independently increased in KTR, who developed graft rejection during the follow-up period, leading to abundant MN Treg and central memory Treg (CM Treg) production and favoring a strongly increased CD8pos Treg/Tresp ratio. …”
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Systematic review and quantitative meta-analysis of age-dependent human T-lymphocyte homeostasis by Victoria Kulesh, Victoria Kulesh, Kirill Peskov, Kirill Peskov, Kirill Peskov, Gabriel Helmlinger, Gennady Bocharov, Gennady Bocharov, Gennady Bocharov

“…Age-dependent homeostasis of each T-lymphocyte subpopulation was evaluated via a weighted average calculation within pre-specified age intervals, using a piece-wise equal-effect meta-analysis methodology.ResultsIn total, 124 studies comprising 11722 unique observations from healthy subjects encompassing 20 different T-lymphocyte subpopulations – total CD45+ and CD3+ lymphocytes, as well as specific CD4+ and CD8+ naïve, recent thymic emigrants, activated, effector and various subpopulations of memory T-lymphocytes (total-memory, central-memory, effector-memory, resident-memory) – were systematically collected and included in the final database for a comprehensive analysis. …”
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