Cited by 45Immune Cell Function and InteractionT-cell and B-cell ImmunologyReproductive System and Pregnancy

Promoter choice and translational repression determine cell type-specific cell surface density of the inhibitory receptor CD85j expressed on different hematopoietic lineages

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Lamar, David L., Weyand, Cornelia M., Goronzy, Jörg J.·2010·Blood

Abstract

CD85j (ILT2/LILRB1/LIR-1) is an inhibitory receptor that recognizes major histocompatibility complex (MHC) class Ia and Ib alleles that are widely expressed on all cell types. On ligand recognition, CD85j diminishes kinase activity by recruiting phosphatases to motifs within its cytoplasmic domain. Within the hematopoietic system, CD85j is expressed with cell-specific patterns and cell surface densities that reflect the different roles of cell contact-mediated inhibition in these lineages. While monocytes ubiquitously have high cell surface expression, B lymphocytes start to express CD85j at intermediate levels during early B-cell maturation and natural killer (NK) cells and T cells exhibit a low level of expression on only a subset of cells. The cell-specific expression pattern is accomplished by 2 complementing but not independent mechanisms. Lymphocytes and monocytes use distinct promoters to drive CD85j expression. The lymphocyte promoter maps 13 kilobases (kb) upstream of the monocyte promoter; its use results in the inclusion of a distant exon into the 5′-untranslated region. A short sequence stretch within this exon has the unique function of repressing CD85j protein translation and is responsible for the subdued expression in lymphocytes. These cell-specific mechanisms allow tailoring of CD85j levels to the distinct roles it plays in different hematopoietic lineages.

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  • TEMRAs express negative regulatory receptors such as killer immunoglobulin-like receptors and CD85j that interfere with their ability to proliferate but not with cytokine production.

    “TEMRAs express a host of negative regulatory receptors such as killer immunoglobulin-like receptors and CD85j that interfere with their ability to proliferate but not with cytokine production”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Lamar et al., 2010

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  1. Fanger NA, Cosman D, Peterson L, Braddy SC, Maliszewski CR, Borges L. The MHC class I bind- ing proteins LIR-1 and LIR-2 inhibit Fc receptor- mediated signaling in monocytes. Eur J Immunol. 1998;28(11):3423-3434.
  2. Navarro F, Llano M, Bellon T, Colonna M, Geraghty DE, Lopez-Botet M. The ILT2(LIR1) and CD94/NKG2A NK cell receptors respectively rec- ognize HLA-G1 and HLA-E molecules co-ex- pressed on target cells. Eur J Immunol. 1999; 29(1):277-283.
  3. NK-cell immunological synapse. Nat Rev Immu- nol. 2008;8(9):713-725.
  4. Serbina NV, Jia T, Hohl TM, Pamer EG. Mono- cyte-mediated defense against microbial patho- gens. Annu Rev Immunol. 2008;26:421-452.

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Authors
Lamar, D. L., Weyand, C. M., & Goronzy, J. J.
Affiliations
Emory University (US)
Venue
Blood
Published
2010-04-22
Volume
115
Issue
16
Pages
3278-3286
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2037182265
Cited by
45
References
46
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 1 · 2018: 3 · 2017: 3 · 2016: 4 · 2015: 2 · 2014: 3 · 2013: 2 · 2012: 1
FWCI
1.37
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Foundation for Aging Research
  • National Institutes of Health
  • National Institute on Aging (R01AG015043, R01AG15043)
  • National Heart, Lung, and Blood Institute (R01HL117913)
  • National Eye Institute (R01EY011916, R01 EY 11916)
  • National Institute of General Medical Sciences (T32GM008169)
  • National Institute of Allergy and Infectious Diseases (R01AI044142, U19-AI57266, R01AI44142, R01AI108906, R56AI044142, U19AI057266)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR041974, R01 AR 41974, R01AR042527, R01AR42527)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Cell Function and Interaction
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Reproductive System and Pregnancy
Keywords
LILRB1, ILT2, inhibitory receptors, cell type-specific gene expression, protein synthesis inhibition, 5' untranslated region, lymphocytes, monocytes, natural killer cells, T cells, B cells, hematopoietic lineage
MeSH terms
Leukocyte Immunoglobulin-like Receptor B1, B-Lymphocytes, Base Sequence, Cell Separation, Flow Cytometry, Gene Expression Regulation, Humans, Killer Cells, Natural, Leukocytes, Mononuclear, Molecular Sequence Data, Monocytes, Promoter Regions, Genetic, Receptors, Immunologic, T-Lymphocytes, Transfection, Protein Biosynthesis, Blotting, Western, Antigens, CD, Gene Expression, Cell Lineage, Reverse Transcriptase Polymerase Chain Reaction

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