Immunological synapse formation between T regulatory cells and cancer-associated fibroblasts promotes tumour development.

Cancer-associated fibroblasts (CAFs) have emerged as a dominant non-hematopoietic cell population in the tumour microenvironment, serving diverse functions in tumour progression. However, the mechanisms via which CAFs influence the anti-tumour immunity remain poorly understood. Here, using multiple tumour models and biopsies from cancer patients, we report that α-SMA CAFs can form immunological synapses with Foxp3 regulatory T cells (Tregs) in tumours.

Exploring the occurrence and the risk factors of the desire for hastened death and depression in people with early-stage dementia in Greece.

Objectives: To assess the factors associated with desire for hastened death and depression in early-stage dementia as well as the association between them. Also, to explore the mediator and moderator role of age in the relationship between depression and desire for hasten death.

Methods: A prospective cross-sectional study including 100 patients diagnosed with early-stage dementia from a rehabilitation center between December 2018 and July 2019.

Regulatory T Cells in Autoimmunity and Cancer: A Duplicitous Lifestyle.

Regulatory T (Treg) cells, possess a strategic role in the maintenance of immune homeostasis, and their function has been closely linked to development of diverse pathologies including autoimmunity and cancer. Comprehensive studies in various disease contexts revealed an increased plasticity as a characteristic of Treg cells. Although Treg cell plasticity comes in various flavors, the major categories enclose the loss of Foxp3 expression, which is the master regulator of Treg cell lineage, giving rise to "ex-Treg" cells and the "fragile" Treg cells in which expression is retained but accompanied by the engagement of an inflammatory program and attenuation of the suppressive activity.