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Goblet cells are simple columnar epithelial cells, having a height of four times that of their width. The cytoplasm of goblet cells tends to be displaced toward the basal end of the cell body by the large mucin granules, which accumulate near the apical surface of the cell along the Golgi apparatus, which lies between the granules and the nucleus.
Goblet cell-associated antigen passages (GAP) transfer low molecular weight soluble antigens to CD103+ dendritic cells. CD103+ dendritic cells are associated with tolerance induction. [30] CX3CR1+ macrophages extend in between enterocytes and directly take up antigens form the intestinal lumen. These macrophages are not capable of traveling to ...
The discussion that follows now concerns alpha/beta T cells. The TCR (of αβ T-cells) binds a bimolecular complex displayed at the surface of some other cells called an antigen-presenting cell (APC). This complex consists of: a fragment of an antigen lying within the groove of a histocompatibility molecule. The complex has been compared to a ...
Unlike their neighbor cells, M cells have the unique ability to take up antigen from the lumen of the small intestine via endocytosis, phagocytosis, or transcytosis. Antigens are delivered to antigen-presenting cells, such as dendritic cells, and B lymphocytes. M cells express the protease cathepsin E, similar to other antigen-presenting cells ...
Transporter associated with antigen processing (TAP) protein complex belongs to the ATP-binding-cassette transporter family. [1] It delivers cytosolic peptides into the endoplasmic reticulum (ER), where they bind to nascent MHC class I molecules. [2]
During each mitosis, one of the two daughter cells remains in the crypt as a stem cell, while the other differentiates and migrates up the side of the crypt and eventually into the villus. These stem cells can differentiate into either an absorptive ( enterocytes ) or secretory ( Goblet cells , Paneth cells , enteroendocrine cells ) lineages. [ 3 ]
Involves in epithelial cell maturation as well as goblet and Paneth cell differentiation. Required for the small intestinal identity during development. In IEC-6 cells, conditional expression induced enterocyte and goblet like cells: 21081128 [13] 19386267 [14] 8552090 [15] CTNNB1: Catenin, beta: Paneth cell differentiation. Essential for stem ...
An antibody digested by papain yields three fragments, two Fab fragments and one Fc fragment An antibody digested by pepsin yields two fragments: a F(ab') 2 fragment and a pFc' fragment The fragment crystallizable region ( Fc region ) is the tail region of an antibody that interacts with cell surface receptors called Fc receptors and some ...