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Title: Senescent cells evade immune clearance via HLA-E-mediated NK and CD8+ T cell inhibition

Journal Article · · Nature Communications
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  1. Univ. College London (UCL) (United Kingdom)
  2. Buck Inst. for Research on Aging, Novato, CA (United States)
  3. Newcastle Univ., Newcastle upon Tyne (United Kingdom)
  4. Northumbria Univ., Newcastle upon Tyne (United Kingdom)
  5. Buck Inst. for Research on Aging, Novato, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Senescent cells accumulate in human tissues during ageing and contribute to age-related pathologies. The mechanisms responsible for their accumulation are unclear. Here we show that senescent dermal fibroblasts express the non-classical MHC molecule HLA-E, which interacts with the inhibitory receptor NKG2A expressed by NK and highly differentiated CD8+ T cells to inhibit immune responses against senescent cells. HLA-E expression is induced by senescence-associated secretary phenotype-related pro-inflammatory cytokines, and is regulated by p38 MAP kinase signalling in vitro. Consistently, HLA-E expression is increased on senescent cells in human skin sections from old individuals, when compared with those from young, and in human melanocytic nevi relative to normal skin. Lastly, blocking the interaction between HLA-E and NKG2A boosts immune responses against senescent cells in vitro. We thus propose that increased HLA-E expression contributes to persistence of senescent cells in tissues, thereby suggesting a new strategy for eliminating senescent cells during ageing.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1546687
Journal Information:
Nature Communications, Vol. 10, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 204 works
Citation information provided by
Web of Science

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Cited By (7)

Risk profiling using metabolomic characteristics for susceptible individuals of drug-induced liver injury caused by Polygonum multiflorum journal October 2019
Senescence and the Impact on Biodistribution of Different Nanosystems: the Discrepancy on Tissue Deposition of Graphene Quantum Dots, Polycaprolactone Nanoparticle and Magnetic Mesoporous Silica Nanoparticles in Young and Elder Animals journal January 2020
Skin barrier immunity and ageing journal December 2019
Compartmentalized cytotoxic immune response leads to distinct pathogenic roles of natural killer and senescent CD8 + T cells in human cutaneous leishmaniasis journal January 2020
Virtual Screening of Potential Anti-fatigue Mechanism of Polygonati Rhizoma Based on Network Pharmacology journal January 2020
Environmental Exposures and Asthma Development: Autophagy, Mitophagy, and Cellular Senescence journal November 2019
Blood autophagy defect causes accelerated non-hematopoietic organ aging journal July 2019

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