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Reactive Oxygen Species: Central Regulators of the Tumor Microenvironment

An Immuno-Oncology Perspective

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Handbook of Oxidative Stress in Cancer: Mechanistic Aspects

Abstract

Reactive oxygen species (ROS), a group of molecules generated by partial reduction of oxygen, have been postulated as central regulators of essential cellular functions through the modulation of signaling pathways activity. Excessive production of ROS, also known as oxidative stress, is a common feature of tumor microenvironment (TME). A large number of studies have provided strong evidence supporting a role of oxidative stress in the regulation of tumor development and progression through the modulation of the TME. In this chapter, we summarize the state of the field as it relates to causes and consequences of ROS elevation in the TME. In addition, we describe the molecular and biological mechanisms governing the intricate network of events driven by oxidative stress leading to an immunosuppressed TME. Finally, we discuss the translational significance of ROS induction as new therapeutic strategies with an emphasis in the role of photodynamic therapy, as a ROS-based potent antitumor agent regulating inflammation and immune system activation during tumor progression.

Maria Julia Lamberti & Renzo Emanuel Vera contributed equally to this article.

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Abbreviations

APC:

Antigen presenting cells

CAFs:

Cancer Associated Fibroblasts

COX:

Ciclooxigenase

DCs:

Dendritic cells

ECM:

Extracellular matrix

ERK:

Extracellular signal-regulated kinase

HGG:

High-grade glioma

HIF-1:

Hypoxia Inducible Factor-1

ICD:

Immunogenic cell death

JNK:

c-Jun N-terminal kinase

MAPK:

Mitogen-activated protein kinase

MDSCs:

Myeloid-derived suppressor cells

NK:

Natural killer

NOX:

NADPH oxidase

PDT:

Photodynamic Therapy

PGE2:

Prostaglandin E2

ROS:

Reactive oxygen species

SOD:

Superoxide dismutase

TAMs:

Tumor-Associated Macrophages

TCR:

T-cell receptor

Th1:

T-helper 1

Treg:

T-regulatory

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Correspondence to Renzo Emanuel Vera .

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© 2022 Springer Nature Singapore Pte Ltd.

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Lamberti, M.J., Vera, R.E., Fernández-Zapico, M.E., Rumie Vittar, N.B. (2022). Reactive Oxygen Species: Central Regulators of the Tumor Microenvironment. In: Chakraborti, S., Ray, B.K., Roychoudhury, S. (eds) Handbook of Oxidative Stress in Cancer: Mechanistic Aspects. Springer, Singapore. https://doi.org/10.1007/978-981-15-9411-3_159

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