NK cell exhaustion in the tumor microenvironment

Natural killer (NK) cells kill mutant cells through death receptors and cytotoxic granules, playing an essential role in controlling cancer progression. However, in the tumor microenvironment (TME), NK cells frequently exhibit an exhausted status, which impairs their immunosurveillance function and...

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Main Authors: Hao Jia, Hongmei Yang, Huaxing Xiong, Kathy Qian Luo
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-11-01
Series:Frontiers in Immunology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fimmu.2023.1303605/full
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author Hao Jia
Hongmei Yang
Huaxing Xiong
Kathy Qian Luo
Kathy Qian Luo
author_facet Hao Jia
Hongmei Yang
Huaxing Xiong
Kathy Qian Luo
Kathy Qian Luo
author_sort Hao Jia
collection DOAJ
description Natural killer (NK) cells kill mutant cells through death receptors and cytotoxic granules, playing an essential role in controlling cancer progression. However, in the tumor microenvironment (TME), NK cells frequently exhibit an exhausted status, which impairs their immunosurveillance function and contributes to tumor immune evasion. Emerging studies are ongoing to reveal the properties and mechanisms of NK cell exhaustion in the TME. In this review, we will briefly introduce the maturation, localization, homeostasis, and cytotoxicity of NK cells. We will then summarize the current understanding of the main mechanisms underlying NK cell exhaustion in the TME in four aspects: dysregulation of inhibitory and activating signaling, tumor cell-derived factors, immunosuppressive cells, and metabolism and exhaustion. We will also discuss the therapeutic approaches currently being developed to reverse NK cell exhaustion and enhance NK cell cytotoxicity in the TME.
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spelling doaj.art-8da75f7ce7fc4f58891299e39087c00e2023-11-03T06:11:13ZengFrontiers Media S.A.Frontiers in Immunology1664-32242023-11-011410.3389/fimmu.2023.13036051303605NK cell exhaustion in the tumor microenvironmentHao Jia0Hongmei Yang1Huaxing Xiong2Kathy Qian Luo3Kathy Qian Luo4Faculty of Health Sciences, University of Macau, Taipa, Macao SAR, ChinaFaculty of Health Sciences, University of Macau, Taipa, Macao SAR, ChinaFaculty of Health Sciences, University of Macau, Taipa, Macao SAR, ChinaFaculty of Health Sciences, University of Macau, Taipa, Macao SAR, ChinaMinistry of Education Frontiers Science Center for Precision Oncology, University of Macau, Taipa, Macao SAR, ChinaNatural killer (NK) cells kill mutant cells through death receptors and cytotoxic granules, playing an essential role in controlling cancer progression. However, in the tumor microenvironment (TME), NK cells frequently exhibit an exhausted status, which impairs their immunosurveillance function and contributes to tumor immune evasion. Emerging studies are ongoing to reveal the properties and mechanisms of NK cell exhaustion in the TME. In this review, we will briefly introduce the maturation, localization, homeostasis, and cytotoxicity of NK cells. We will then summarize the current understanding of the main mechanisms underlying NK cell exhaustion in the TME in four aspects: dysregulation of inhibitory and activating signaling, tumor cell-derived factors, immunosuppressive cells, and metabolism and exhaustion. We will also discuss the therapeutic approaches currently being developed to reverse NK cell exhaustion and enhance NK cell cytotoxicity in the TME.https://www.frontiersin.org/articles/10.3389/fimmu.2023.1303605/fullcancertumor microenvironmentNK cellexhaustionimmunotherapy
spellingShingle Hao Jia
Hongmei Yang
Huaxing Xiong
Kathy Qian Luo
Kathy Qian Luo
NK cell exhaustion in the tumor microenvironment
Frontiers in Immunology
cancer
tumor microenvironment
NK cell
exhaustion
immunotherapy
title NK cell exhaustion in the tumor microenvironment
title_full NK cell exhaustion in the tumor microenvironment
title_fullStr NK cell exhaustion in the tumor microenvironment
title_full_unstemmed NK cell exhaustion in the tumor microenvironment
title_short NK cell exhaustion in the tumor microenvironment
title_sort nk cell exhaustion in the tumor microenvironment
topic cancer
tumor microenvironment
NK cell
exhaustion
immunotherapy
url https://www.frontiersin.org/articles/10.3389/fimmu.2023.1303605/full
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