ArticleProceedings of the National Academy of Sciences of the United States of America2023
Dynamic interactome of the MHC I peptide loading complex in human dendritic cells.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 9 citations in OpenAlex.
- Immune checkpoints and immunoregulation in metabolic diseases and cancers: pathological mechanisms and therapeutic potential.Signal transduction and targeted therapy · 2026Review
- Quantitative nanoscale imaging shows peptide-MHC I complexes are monomeric and spatially regulated in human dendritic cells.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Peptide Loading Complex in Cancer: From Peptide Translocation, Editing, and Loading into MHC-I to a Potential Therapeutic Target.Current medical science · 2026Review
- Dendritic Cells as Immunometabolic Regulatory Nodes in Diabetes: Molecular Mechanisms and Therapeutic Reprogramming.International journal of molecular sciences · 2026Review
- Neoepitopes at the crossroads of immunometabolism: metabolic remodeling of antigen presentation in type 1 diabetes.Frontiers in immunology · 2026Review
- The potential applications of peptide-loading complex in cancer treatment.Frontiers in immunology · 2025Review
- MHC-I pathway disruption by viruses: insights into immune evasion and vaccine design for animals.Frontiers in immunology · 2025Review
- Key immune regulators in retinal ischemia-reperfusion injuryInternational journal of ophthalmology · 2025Article
- Hypoxia inhibits the iMo/cDC2/CD8+ TRMs immune axis in the tumor microenvironment of human esophageal cancer.Journal for immunotherapy of cancer · 2024Article
- CD8Journal of translational medicine · 2024Review
- iRhom2 regulates ectodomain shedding and surface expression of the major histocompatibility complex (MHC) class I.Cellular and molecular life sciences : CMLS · 2024Article
- Dynamic immune status analysis of peripheral blood mononuclear cells in patients withFrontiers in immunology · 2024Article
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Dendritic cells (DCs) orchestrate immune responses by presenting antigenic peptides on major histocompatibility complex (MHC) molecules to T cells. Antigen processing and presentation via MHC I rely on the peptide-loading complex (PLC), a supramolecular machinery assembled around the transporter associated with antigen processing (TAP), which is the peptide transporter in the endoplasmic reticulum (ER) membrane. We studied antigen presentation in human DCs by isolating monocytes from blood and differentiating them into immature and mature DCs. We uncovered that during DC differentiation and maturation, additional proteins are recruited to the PLC, including B-cell receptor-associated protein 31 (BAP31), vesicle-associated membrane protein-associated protein A (VAPA), and extended synaptotagmin-1 (ESYT1). We demonstrated that these ER cargo export and contact site-tethering proteins colocalize with TAP and are within 40 nm proximity of the PLC, suggesting that the antigen processing machinery is located near ER exit- and membrane contact sites. While CRISPR/Cas9-mediated deletion of TAP and tapasin significantly reduced MHC I surface expression, single-gene deletions of the identified PLC interaction partners revealed a redundant role of BAP31, VAPA, and ESYT1 in MHC I antigen processing in DCs. These data highlight the dynamics and plasticity of PLC composition in DCs that previously was not recognized by the analysis of cell lines.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.