Related Experiment Video
Updated: Jul 13, 2026

Myeloid Innate Signaling Pathway Regulation by MALT1 Paracaspase Activity
Published on: January 7, 2019
Slc11a1, formerly Nramp1, is expressed in dendritic cells and influences major histocompatibility complex class II
Carmel B Stober1, Sven Brode, Jacqueline K White
1Cambridge Institute for Medical Research and Department of Medicine, Wellcome Trust/MRC Building, University of Cambridge School of Clinical Medicine, Addenbrookes Hospital, Hills Road, Cambridge CB2 2XY, United Kingdom.
Solute carrier family 11 member a1 (Slc11a1) in dendritic cells influences immune responses. Wild-type Slc11a1 enhances antigen presentation and may protect against infections but increase type 1 diabetes risk.
Area of Science:
- Immunology
- Cell Biology
- Genetics
Background:
- Solute carrier family 11 member a1 (Slc11a1) transports divalent cations and regulates iron homeostasis in macrophages.
- Slc11a1 influences macrophage function, gene regulation, and Th1 cell bias, impacting infection resistance and type 1 diabetes susceptibility.
- The role of Slc11a1 in dendritic cells (DCs) regarding these functions remains unclear.
Purpose of the Study:
- To investigate the expression and function of Slc11a1 in CD11c(+) dendritic cells.
- To determine the impact of Slc11a1 on DC cytokine production, MHC class II expression, and antigen presentation.
- To elucidate the contribution of Slc11a1 in DCs to host defense and autoimmune disease.
Main Methods:
- Analysis of Slc11a1 expression in late endosomes/lysosomes of DCs.
- Quantitative assessment of IL-10 and IL-12 mRNA in DCs stimulated with lipopolysaccharide (LPS).
- Evaluation of major histocompatibility complex class II upregulation and antigen presentation efficiency in DCs from wild-type and mutant mice.
Main Results:
- Slc11a1 is expressed in late endosomes/lysosomes of CD11c(+) DCs.
- DCs from Slc11a1 mutant mice exhibit a higher IL-10 to IL-12 mRNA ratio upon LPS stimulation compared to wild-type.
- Wild-type DCs show more efficient upregulation of MHC class II and enhanced processing/presentation of antigens (OVA, LACK) than mutant DCs.
Conclusions:
- Wild-type Slc11a1 expressed in DCs plays a role in modulating immune responses.
- DC-specific Slc11a1 function contributes to both resistance against infectious diseases and susceptibility to autoimmune conditions like type 1 diabetes.
More Related Videos
08:07Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry
Published on: May 19, 2020
10:16SorLA and CLC:CLF-1-dependent Downregulation of CNTFRα as Demonstrated by Western Blotting, Inhibition of Lysosomal Enzymes, and Immunocytochemistry
Published on: January 6, 2017
Related Concept Videos
Antigen Processing Pathways
MHC Class I: Presenting Endogenous...
Immunoglobulin-like Cell Adhesion Molecules
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Antigens Involved in Adaptive Immunity
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Antigen Presenting Cells
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
lncRNA - Long Non-coding RNAs