Mechanisms of immune privilege in the eye and hair follicle

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

It has been recognized for over a century that the eye is endowed with remarkable properties that permit the long-term survival of foreign tumor and tissue grafts that are normally rejected at extraocular sites. This ocular immune privilege was originally attributed to a putative sequestration of antigens in the eye as a result of the conspicuous absence of intraocular lymphatic drainage channels. In the last 30 years, a sizeable body of information indicates that ocular immune privilege is a product of multiple anatomical, physiological, and immunoregulatory processes. Ocular tissues and fluids express a wide variety of anti-inflammatory and immunosuppressive molecules, including CD95L (FasL), transforming growth factor-β, macrophage migration inhibitory factor, α-melanocyte-stimulating hormone, calcitonin gene-related peptide, somatostatin, and complement regulatory proteins. Moreover, antigens entering the anterior chamber of the eye evoke a unique form of immune deviation that culminates in the antigen-specific suppression of TH1 immune responses. Finally, the intraocular milieu contains both cell membrane and soluble factors that inhibit both the adaptive and innate immune systems. The hair follicle is also recognized for its immune privilege. Like the anterior chamber of the eye, it produces anti-inflammatory and immunosuppressive cytokines, such as transforming growth factor-β and adrenocorticotrophic hormone. The cells of the hair follicle display limited expression of class Ia MHC molecules and, like cells that line the anterior chamber of the eye, are protected against CD8+ cytotoxic T lymphocyte attack. Gaining a better understanding of the immune privilege of the hair follicle may provide insights into the regulation and pathogenesis of immune-mediated diseases of the skin.

Original languageEnglish (US)
Pages (from-to)168-172
Number of pages5
JournalJournal of Investigative Dermatology Symposium Proceedings
Volume8
Issue number2
DOIs
StatePublished - Oct 2003

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Hair Follicle
Anterior Chamber
Transforming Growth Factors
Immunosuppressive Agents
Antigens
Anti-Inflammatory Agents
Physiological Phenomena
Macrophage Migration-Inhibitory Factors
Melanocyte-Stimulating Hormones
Fas Ligand Protein
Calcitonin Gene-Related Peptide
Immune System Diseases
Cytotoxic T-Lymphocytes
Somatostatin
Adrenocorticotropic Hormone
Growth Hormone
Drainage
Immune System
Complement System Proteins
Cell Membrane

Keywords

  • Eye
  • Hair follicle
  • Immune privilege

ASJC Scopus subject areas

  • Dermatology

Cite this

Mechanisms of immune privilege in the eye and hair follicle. / Niederkorn, Jerry Y.

In: Journal of Investigative Dermatology Symposium Proceedings, Vol. 8, No. 2, 10.2003, p. 168-172.

Research output: Contribution to journalArticle

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