CD74 (CD74 molecule, major histocompatibility complex, class II invariant chain)

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Regulation of dendritic cell migration by CD74, the MHC class II-associated invariant chain.

Dendritic cells (DCs) sample peripheral tissues of the body in search of antigens to present to T cells. This requires two processes, antigen processing and cell motility, originally thought to occur independently. We found that the major histocompatibility complex II-associated invariant chain (Ii or CD74), a known regulator of antigen processing, negatively regulates DC motility in vivo. By u...

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Invariant chain cleavage and peptide loading in major histocompatibility complex class II vesicles

B lymphocytes contain a novel population of endocytic vesicles involved in the transport of newly synthesized major histocompatibility complex (MHC) class II alpha beta chains and alpha beta peptide complexes to the cell surface. We now present evidence that these class II-enriched vesicles (CIIV) are also likely to be a site for the loading of immunogenic peptides onto MHC molecules. We used t...

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Intracellular transport and localization of major histocompatibility complex class II molecules and associated invariant chain

The intracellular transport and location of major histocompatibility complex (MHC) class II molecules and associated invariant chain (Ii) were investigated in a human melanoma cell line. In contrast to the class II molecules, which remain stable for greater than 4 h after synthesis, the associated Ii is proteolytically processed within 2 h. During or shortly after synthesis the NH2-terminal cyt...

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Efficient endosomal localization of major histocompatibility complex class II-invariant chain complexes requires multimerization of the invariant chain targeting sequence

During biosynthesis, MHC class II-invariant chain complexes are transported into endosomal compartments where invariant chain (Ii) is degraded and class II encounters antigenic peptides. One of the signals that determines this intracellular transport route has been localized to the cytosolic domain of Ii. Deletion of this signal disrupts endosomal targeting and results in the stable expression ...

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T cell recognition of major histocompatibility complex class II complexes with invariant chain processing intermediates

Peptides from the lumenal portion of invariant chain (Ii) spanning residues 80-106 (class II-associated Ii peptide [CLIP]) are found in association with several mouse and human major histocompatibility complex (MHC) class II allelic variants in wild-type and presentation-deficient mutant cells. The ready detection of these complexes suggests that such an intermediate is essential to the MHC cla...

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ژورنال

عنوان ژورنال: Atlas of Genetics and Cytogenetics in Oncology and Haematology

سال: 2014

ISSN: 1768-3262

DOI: 10.4267/2042/54366