Cited by 270T-cell and B-cell ImmunologyImmune responses and vaccinationsImmunodeficiency and Autoimmune Disorders

A double-negative (IgD−CD27−) B cell population is increased in the peripheral blood of elderly people

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Colonna-Romano, Giuseppina, Bulati, Matteo, Aquino, Alessandra, Pellicanò, Mariavaleria, Vitello, Salvatore, Lio, Domenico, Candore, Giuseppina, Caruso, Calogero·2009·Mechanisms of Ageing and Development

Abstract

The T cell branch of the immune system has been extensively studied in the elderly and it is known that the elderly have impaired immune function, mainly due to the chronic antigenic load that ultimately causes shrinkage of the T cell repertoire and filling of the immunologic space with memory T cells. In the present paper, we describe the IgD(-)CD27(-) double-negative B cell population which (as we have recently described) is higher in the elderly. Most of these cells were IgG(+). Evaluation of the telomere length and expression of the ABCB1 transporter and anti-apoptotic molecule, Bcl2, shows that they have the markers of memory B cells. We also show that these cells do not act as antigen presenting cells, as indicated by the low levels of CD80 and DR, nor do they express significant levels of the CD40 molecule necessary to interact with T lymphocytes through the ligand, CD154. Hence, we hypothesize that these expanded cells are late memory or exhausted cells that have down-modulated the expression of CD27 and filled the immunologic space in the elderly. These cells might be the age-related manifestation of time-enduring stimulation or dysregulation of the immune system.

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Crossref · 10.1016/j.mad.2009.08.003

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Authors
Colonna-Romano, G., Bulati, M., Aquino, A., Pellicanò, M., Vitello, S., Lio, D., Candore, G., & Caruso, C.
Affiliations
University of Palermo (IT)
Venue
Mechanisms of Ageing and Development
Publisher
Elsevier BV
Published
2009-10
Volume
130
Issue
10
Pages
681-690
ISSN
0047-6374 (ISSN-L)
OpenAlex
W2073872022
Cited by
270
References
55
Citations by year
2026: 13 · 2025: 21 · 2024: 22 · 2023: 33 · 2022: 14 · 2021: 28 · 2020: 18 · 2019: 20 · 2018: 13 · 2017: 16 · 2016: 16 · 2015: 8 · 2014: 12 · 2013: 8 · 2012: 12
FWCI
4.02
Type
journal article
Language
en
Open access
Locations
  • Mechanisms of Ageing and Development (publishedVersion)
  • PubMed (publishedVersion)
  • Nova Science Publishers (Nova Science Publishers, Inc.) (submittedVersion, other-oa)
Funders
Ministero dell’Istruzione, dell’Università e della Ricerca
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
  • Life Sciences › Immunology and Microbiology › Immunology › Immunodeficiency and Autoimmune Disorders
Keywords
double negative B cells, older adults, immunosenescence, memory B cells, B cell exhaustion, telomere length, Bcl-2, antigen presentation, CD80, CD40, CD154, peripheral blood
MeSH terms
Adult, Age Factors, Aged, Aged, 80 and over, Aging, Cells, Cultured, Flow Cytometry, HLA-DR Antigens, Humans, Immunoglobulin D, Immunologic Memory, Middle Aged, B-Lymphocyte Subsets, Telomere, B7-1 Antigen, Tumor Necrosis Factor Receptor Superfamily, Member 7, ATP Binding Cassette Transporter, Subfamily B, Antigens, CD19, CD40 Antigens, Proto-Oncogene Proteins c-bcl-2, Ki-67 Antigen, ATP Binding Cassette Transporter, Subfamily B, Member 1, Young Adult

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