Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer

Ligation of the inhibitory receptor NKG2A by its ligand HLA-E negatively regulates the activation of natural killer (NK) cells, as well as subsets of CD8+ T cells and innate T cell populations. NKG2A has recently become a novel immune checkpoint target for the treatment of cancer and direct antibody...

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Main Authors: Jack G. Fisher, Amber D. P. Doyle, Lara V. Graham, Salim I. Khakoo, Matthew D. Blunt
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Vaccines
Subjects:
Online Access:https://www.mdpi.com/2076-393X/10/12/1993
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author Jack G. Fisher
Amber D. P. Doyle
Lara V. Graham
Salim I. Khakoo
Matthew D. Blunt
author_facet Jack G. Fisher
Amber D. P. Doyle
Lara V. Graham
Salim I. Khakoo
Matthew D. Blunt
author_sort Jack G. Fisher
collection DOAJ
description Ligation of the inhibitory receptor NKG2A by its ligand HLA-E negatively regulates the activation of natural killer (NK) cells, as well as subsets of CD8+ T cells and innate T cell populations. NKG2A has recently become a novel immune checkpoint target for the treatment of cancer and direct antibody mediated blockade of NKG2A function is currently under assessment in two phase 3 clinical trials. In addition to direct targeting, the NKG2A:HLA-E axis can also be disrupted indirectly via multiple different targeted cancer agents that were not previously recognised to possess immunomodulatory properties. Increased understanding of immune cell modulation by targeted cancer therapies will allow for the design of rational and more efficacious drug combination strategies to improve cancer patient outcomes. In this review, we summarise and discuss the various strategies currently in development which either directly or indirectly disrupt the NKG2A:HLA-E interaction to enhance NK cell activation against cancer.
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spelling doaj.art-56d633a0d3354294a0db745ec22ad2bf2023-11-24T18:30:47ZengMDPI AGVaccines2076-393X2022-11-011012199310.3390/vaccines10121993Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against CancerJack G. Fisher0Amber D. P. Doyle1Lara V. Graham2Salim I. Khakoo3Matthew D. Blunt4School of Clinical and Experimental Sciences, University of Southampton, Southampton SO16 6YD, UKSchool of Clinical and Experimental Sciences, University of Southampton, Southampton SO16 6YD, UKSchool of Clinical and Experimental Sciences, University of Southampton, Southampton SO16 6YD, UKSchool of Clinical and Experimental Sciences, University of Southampton, Southampton SO16 6YD, UKSchool of Clinical and Experimental Sciences, University of Southampton, Southampton SO16 6YD, UKLigation of the inhibitory receptor NKG2A by its ligand HLA-E negatively regulates the activation of natural killer (NK) cells, as well as subsets of CD8+ T cells and innate T cell populations. NKG2A has recently become a novel immune checkpoint target for the treatment of cancer and direct antibody mediated blockade of NKG2A function is currently under assessment in two phase 3 clinical trials. In addition to direct targeting, the NKG2A:HLA-E axis can also be disrupted indirectly via multiple different targeted cancer agents that were not previously recognised to possess immunomodulatory properties. Increased understanding of immune cell modulation by targeted cancer therapies will allow for the design of rational and more efficacious drug combination strategies to improve cancer patient outcomes. In this review, we summarise and discuss the various strategies currently in development which either directly or indirectly disrupt the NKG2A:HLA-E interaction to enhance NK cell activation against cancer.https://www.mdpi.com/2076-393X/10/12/1993natural killer cellNK cellNKG2AHLA-Eimmunotherapycheckpoint blockade
spellingShingle Jack G. Fisher
Amber D. P. Doyle
Lara V. Graham
Salim I. Khakoo
Matthew D. Blunt
Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer
Vaccines
natural killer cell
NK cell
NKG2A
HLA-E
immunotherapy
checkpoint blockade
title Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer
title_full Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer
title_fullStr Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer
title_full_unstemmed Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer
title_short Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer
title_sort disruption of the nkg2a hla e immune checkpoint axis to enhance nk cell activation against cancer
topic natural killer cell
NK cell
NKG2A
HLA-E
immunotherapy
checkpoint blockade
url https://www.mdpi.com/2076-393X/10/12/1993
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