Related Experiment Video
Updated: Oct 13, 2025
07:40
Experimental Autoimmune Uveitis: An Intraocular Inflammatory Mouse Model
Published on: January 12, 2022
5.3K
Intraocular dendritic cells characterize HLA-B27-associated acute anterior uveitis
Maren Kasper1, Michael Heming2, David Schafflick2
1Ophtha-Lab, Department of Ophthalmology, and Uveitis Centre at St. Franziskus Hospital, Münster, Germany.
Elife
|November 16, 2021
Summary
Human leukocyte antigen B27 (HLA-B27) positive uveitis shows unique dendritic cell infiltration. This study reveals distinct immune cell patterns in this common inflammatory eye disease, offering new insights into its mechanisms.
Area of Science:
- Ophthalmology
- Immunology
- Genetics
Background:
- Uveitis is a group of inflammatory eye diseases involving leukocyte infiltration.
- Uveitis associated with human leukocyte antigen B27 (HLA-B27) is a common subtype and a model immune-mediated ocular disease.
- Local immune mechanisms in human uveitis are poorly understood due to limited biomaterial and technical challenges.
Purpose of the Study:
- To provide a high-resolution characterization of intraocular leukocytes in HLA-B27-positive and -negative anterior uveitis.
- To compare these findings with infectious endophthalmitis.
- To elucidate the role of specific immune cells, particularly dendritic cells (DCs), in HLA-B27-positive uveitis.
Main Methods:
- Single-cell RNA-sequencing combined with flow cytometry and protein analysis.
- Characterization of intraocular leukocytes in patients with HLA-B27-positive anterior uveitis (n=4), HLA-B27-negative anterior uveitis (n=2), and infectious endophthalmitis (n=1).
Main Results:
- Ocular cell infiltrates were primarily lymphocytes in both uveitis subtypes and myeloid cells in infectious endophthalmitis.
- HLA-B27-positive uveitis uniquely showed an infiltrate of plasmacytoid and classical dendritic cells (cDCs).
- Classical DCs were predicted to be central in local cell-cell communication within HLA-B27-positive uveitis.
Conclusions:
- HLA-B27-positive uveitis exhibits a distinct pattern of ocular leukocyte infiltration compared to other forms of uveitis and infectious endophthalmitis.
- Dendritic cells, particularly cDCs, play a significant role in the immune response in HLA-B27-positive uveitis.
- These findings highlight the importance of DCs in the pathogenesis of this specific subtype of uveitis.
Related Concept Videos
01:25Glaucoma: Overview
961
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
961
01:22Antigen Presenting Cells
2.3K
The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
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...
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...
2.3K