MHC

The immune system monitors the health status of cells by surveilling fragments of foreign molecules from invaders presented on MHC I complexes at the cell surface. Here, the authors investigate the sequence of events of MHC I assembly and quality control cycle.

The authors present a sensitive and rapid method to determine the binding strength of MHC class 1 peptide complexes using native mass spectrometry.

This ‘guide to’ article provides an overview of the antigen processing and presentation pathways, which lead to the loading of antigenic peptides on major histocompatibility complex (MHC) molecules for detection by T cells.

Regulated trafficking of major histocompatibility complex class II and CD86 is a prerequisite of antigen presenting cell functionality. Authors show here that ubiquitin-like protein 3 is critically involved in the ubiquitination process that controls trafficking, with wide-ranging immunological consequences.

Regulatory T (Treg) cells and mesenchymal stem cells (MSCs) are both cell populations capable of immune tolerance induction. Here the authors show that the transfer of mitochondria from mesenchymal stem cells to allogeneic Treg cells in an HLA-dependent manner results in enhanced immunosuppressive functions of Treg cells.