MHC class II DQ Inhibitors
MHC class II DQ inhibitors are a class of molecules that interact with the Major Histocompatibility Complex (MHC) class II molecules, specifically the DQ isoform, to modulate their function in antigen presentation. MHC class II molecules, including DQ, are essential in the immune system's capacity to present extracellular antigens to CD4+ T cells, which leads to immune responses against foreign invaders. The structure of MHC class II DQ molecules is highly polymorphic, meaning that they have multiple genetic variants across different populations. These molecules consist of two chains, an alpha and a beta chain, which form a complex that binds and presents peptides derived from extracellular proteins. The inhibition of MHC class II DQ molecules typically involves small molecules or peptides that can interfere with the peptide-loading process, thus altering the ability of these molecules to effectively present antigens.
The molecular mechanisms behind MHC class II DQ inhibition are primarily focused on the modulation of the peptide-binding groove of the MHC complex. By binding to specific regions of the DQ molecule, inhibitors can stabilize conformations of the MHC complex that prevent the association or dissociation of peptides. This interference can reduce the presentation of certain peptides to T cells, ultimately affecting downstream immune signaling. Furthermore, these inhibitors may target the intracellular trafficking pathways that control the movement of MHC class II DQ molecules from the endoplasmic reticulum to the cell surface, as well as their recycling from the cell membrane. Understanding the molecular interactions between MHC class II DQ molecules and their inhibitors offers insight into how the immune system's antigen presentation process can be modulated at the chemical level, without focusing on their applied roles in biological systems.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Curcumin | 458-37-7 | sc-200509 sc-200509A sc-200509B sc-200509C sc-200509D sc-200509F sc-200509E | 1 g 5 g 25 g 100 g 250 g 1 kg 2.5 kg | $37.00 $69.00 $109.00 $218.00 $239.00 $879.00 $1968.00 | 47 | |
Curcumin could downregulate MHC class II DQ expression by obstructing the activation of NF-kB, a transcription factor that directly promotes the transcription of MHC class II genes. | ||||||
Resveratrol | 501-36-0 | sc-200808 sc-200808A sc-200808B | 100 mg 500 mg 5 g | $80.00 $220.00 $460.00 | 64 | |
Resveratrol is known to suppress NF-kB pathway activation, which could result in a decreased expression of MHC class II DQ by limiting the transcriptional activation signals required for its gene expression. | ||||||
(−)-Epigallocatechin Gallate | 989-51-5 | sc-200802 sc-200802A sc-200802B sc-200802C sc-200802D sc-200802E | 10 mg 50 mg 100 mg 500 mg 1 g 10 g | $43.00 $73.00 $126.00 $243.00 $530.00 $1259.00 | 11 | |
Epigallocatechin Gallate may directly inhibit the expression of MHC class II DQ by hindering the maturation process of dendritic cells, which are pivotal in antigen presentation and MHC class II molecule expression. | ||||||
Hydrocortisone | 50-23-7 | sc-300810 | 5 g | $102.00 | 6 | |
Hydrocortisone, as a glucocorticoid, could reduce MHC class II DQ expression by inducing the production of proteins that interfere with the assembly and transport of MHC class II molecules to the cell surface. | ||||||
Quercetin | 117-39-5 | sc-206089 sc-206089A sc-206089E sc-206089C sc-206089D sc-206089B | 100 mg 500 mg 100 g 250 g 1 kg 25 g | $11.00 $17.00 $110.00 $250.00 $936.00 $50.00 | 33 | |
Quercetin may decrease MHC class II DQ expression by inhibiting the phosphorylation of signaling molecules downstream of cytokine receptors, which are essential for the activation of MHC class II gene promoters. | ||||||
Apigenin | 520-36-5 | sc-3529 sc-3529A sc-3529B sc-3529C sc-3529D sc-3529E sc-3529F | 5 mg 100 mg 1 g 5 g 25 g 100 g 1 kg | $33.00 $214.00 $734.00 $1151.00 $2348.00 $3127.00 $5208.00 | 22 | |
Apigenin might downregulate MHC class II DQ expression by impeding the Janus kinase (JAK) signaling pathway, which is necessary for the activation of transcription factors that govern MHC class II gene expression. | ||||||
Methotrexate | 59-05-2 | sc-3507 sc-3507A | 100 mg 500 mg | $94.00 $213.00 | 33 | |
Methotrexate could decrease MHC class II DQ expression by disrupting folate metabolism, leading to a reduction in the synthesis of nucleotides required for the transcription and replication of MHC class II genes. | ||||||
Cyclosporin A | 59865-13-3 | sc-3503 sc-3503-CW sc-3503A sc-3503B sc-3503C sc-3503D | 100 mg 100 mg 500 mg 10 g 25 g 100 g | $63.00 $92.00 $250.00 $485.00 $1035.00 $2141.00 | 69 | |
Cyclosporin A might inhibit MHC class II DQ expression by binding to the cytoplasmic protein cyclophilin, subsequently blocking the calcineurin pathway that activates the transcription of MHC class II genes. | ||||||
Aspirin | 50-78-2 | sc-202471 sc-202471A | 5 g 50 g | $20.00 $42.00 | 4 | |
Aspirin could reduce the expression of MHC class II DQ by acetylating and consequently inhibiting cyclooxygenase enzymes, leading to a decreased production of prostaglandins that are involved in the inflammatory response, including the promotion of MHC class II gene expression. | ||||||
Wogonin, S. baicalensis | 632-85-9 | sc-203313 | 10 mg | $200.00 | 8 | |
Wogonin might inhibit the expression of MHC class II DQ by suppressing the signal transducer and activator of transcription (STAT) proteins involved in the signaling pathways that prompt MHC class II gene transcription. | ||||||