Cited by 92T-cell and B-cell ImmunologyBlood disorders and treatmentsHematopoietic Stem Cell Transplantation

Deep sequencing and flow cytometric characterization of expanded effector memory CD8 + CD57 + T cells frequently reveals T-cell receptor Vβ oligoclonality and CDR3 homology in acquired aplastic anemia

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Giudice, Valentina, Feng, Xingmin, Lin, Zenghua, Hu, Wei, Zhang, Fanmao, Qiao, Wangmin, Ibanez, Maria del Pilar Fernandez, Rios, Olga +1 more·2018·Haematologica

Abstract

Oligoclonal expansion of CD8+ CD28− lymphocytes has been considered indirect evidence for a pathogenic immune response in acquired aplastic anemia. A subset of CD8+ CD28− cells with CD57 expression, termed effector memory cells, is expanded in several immune-mediated diseases and may have a role in immune surveillance. We hypothesized that effector memory CD8+CD28−CD57+ cells may drive aberrant oligoclonal expansion in aplastic anemia. We found CD8+CD57+ cells frequently expanded in the blood of aplastic anemia patients, with oligoclonal characteristics by flow cytometric Vβ usage analysis: skewing in 1–5 Vβ families and frequencies of immunodominant clones ranging from 1.98% to 66.5%. Oligoclonal characteristics were also observed in total CD8+ cells from aplastic anemia patients with CD8+CD57+ cell expansion by T-cell receptor deep sequencing, as well as the presence of 1–3 immunodominant clones. Oligoclonality was confirmed by T-cell receptor repertoire deep sequencing of enriched CD8+CD57+ cells, which also showed decreased diversity compared to total CD4+ and CD8+ cell pools. From analysis of complementarity-determining region 3 sequences in the CD8+ cell pool, a total of 29 sequences were shared between patients and controls, but these sequences were highly expressed in aplastic anemia subjects and also present in their immunodominant clones. In summary, expansion of effector memory CD8+ T cells is frequent in aplastic anemia and mirrors Vβ oligoclonal expansion. Flow cytometric Vβ usage analysis combined with deep sequencing technologies allows high resolution characterization of the T-cell receptor repertoire, and might represent a useful tool in the diagnosis and periodic evaluation of aplastic anemia patients. (Registered at clinicaltrials.gov identifiers: 00001620, 01623167, 00001397, 00071045, 00081523, 00961064)

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  • In the majority of AA patients, glycosylphosphatidylinositol-specific T cells can be detected.

    “In the majority of AA patients, glycosylphosphatidylinositol-specific T cells can be detected.61,62”

    From Inflammatory bone marrow microenvironment (2019) · cites this paper as [62]

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  1. [6]Maciejewski JP O’Keefe C Gondek L Tiu R Immune-mediated bone marrow failure syndromes of progenitor and stem cells: molecular analysis of cytotoxic T cell clones. Folia Histochem Cytobiol. 2007; 45(1): 5– 14. 17378239

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Authors
Giudice, V., Feng, X., Lin, Z., Hu, W., Zhang, F., Qiao, W., Ibanez, M. D. P. F., Rios, O., & Young, N. S.
Affiliations
  • National Institutes of Health (US)
  • BGI Group (China) (CN)
Corresponding author
Feng, Xingmin
Venue
Haematologica
Published
2018-02-01
Volume
103
Issue
5
Pages
759-769
ISSN
  • 0390-6078 (ISSN-L)
  • 1592-8721
OpenAlex
W2791489998
Cited by
92
References
51
Citations by year
2026: 5 · 2025: 8 · 2024: 16 · 2023: 23 · 2022: 10 · 2021: 15 · 2020: 9 · 2019: 1 · 2018: 4 · 2014: 1
FWCI
3.12
Type
journal article
Language
en
Open access
Locations
  • Haematologica (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
Keywords
acquired aplastic anemia, effector memory T cells, CD8+CD57+ T cells, CD8+CD28- T cells, T cell receptor repertoire, immune-mediated bone marrow failure
MeSH terms
Anemia, Aplastic, Clone Cells, Flow Cytometry, Humans, Immunologic Memory, Case-Control Studies, Receptors, Antigen, T-Cell, alpha-beta, CD8-Positive T-Lymphocytes, CD57 Antigens, Complementarity Determining Regions, High-Throughput Nucleotide Sequencing

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