RT Journal Article
SR Electronic
T1 The Role of Hyperglycemia in CD4 T-Cell Survival and Differentiation
JF American Society for Clinical Laboratory Science
JO Clin Lab Sci
FD American Society of Chemistry and Laboratory Science
SP 52
OP 58
DO 10.29074/ascls.2018000331
VO 31
IS 2
A1 Iwai, Naomi
A1 Steib, Catherine
A1 Marzo, Amanda
A1 Lerret, Nadine M.
YR 2018
UL http://hwmaint.clsjournal.ascls.org/content/31/2/52.abstract
AB The major driving force in the pathogenesis of prediabetes and type 2 diabetes is thought to be chronic and low-grade systemic inflammation. Immune cells are key players in the induction of this chronic inflammation; however, the type of immune cells and mechanisms underlying the rapidly progressing pathogenesis of this disease are unclear. Therefore, we examined whether hyperglycemia alters CD4 T-cell activation, differentiation, and survival. Dendritic cells and T cells were isolated from human peripheral blood and cultured with varying amounts of glucose. Using flow cytometry, we found dendritic cells primed in hyperglycemic conditions induced CD4 T cells to exhibit a more activated phenotype capable of mobilization. This was evident by upregulation of the adhesion molecule CD11a. Additionally, these activated CD4 T cells had a lower degree of proliferation and decreased expression of the apoptotic protein caspase-3 compared with CD4 T cells primed by dendritic cells stimulated with a physiological concentration of glucose. We conclude that hyperglycemia drives CD4 T cells toward an activated immunophenotype, which could be assessed via flow cytometry in the clinic to further stratify patients with prediabetes and type 2 diabetes and potentially predict those patients at highest risk for progression of the disease.