Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer

Colorectal cancer (CRC) is one of the most lethal malignancies worldwide and CRC therapy remains unsatisfactory. In recent decades, nitric oxide (NO)—a free-radical gas—plus its endogenous producer NO synthases (NOS), have attracted considerable attention. NO exerts dual effects (pro- and anti-tumor...

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Main Authors: Hao Wang, Liye Wang, Zuoxu Xie, Shuang Zhou, Yan Li, Yue Zhou, Meiyan Sun
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/12/7/1881
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author Hao Wang
Liye Wang
Zuoxu Xie
Shuang Zhou
Yan Li
Yue Zhou
Meiyan Sun
author_facet Hao Wang
Liye Wang
Zuoxu Xie
Shuang Zhou
Yan Li
Yue Zhou
Meiyan Sun
author_sort Hao Wang
collection DOAJ
description Colorectal cancer (CRC) is one of the most lethal malignancies worldwide and CRC therapy remains unsatisfactory. In recent decades, nitric oxide (NO)—a free-radical gas—plus its endogenous producer NO synthases (NOS), have attracted considerable attention. NO exerts dual effects (pro- and anti-tumor) in cancers. Endogenous levels of NO promote colon neoplasms, whereas exogenously sustained doses lead to cytotoxic functions. Importantly, NO has been implicated as an essential mediator in many signaling pathways in CRC, such as the Wnt/β-catenin and extracellular-signal-regulated kinase (ERK) pathways, which are closely associated with cancer initiation, metastasis, inflammation, and chemo-/radio-resistance. Therefore, NO/NOS have been proposed as promising targets in the regulation of CRC carcinogenesis. Clinically relevant NO-donating agents have been developed for CRC therapy to deliver a high level of NO to tumor sites. Notably, inducible NOS (iNOS) is ubiquitously over-expressed in inflammatory-associated colon cancer. The development of iNOS inhibitors contributes to targeted therapies for CRC with clinical benefits. In this review, we summarize the multifaceted mechanisms of NO-mediated networks in several hallmarks of CRC. We review the clinical manifestation and limitations of NO donors and NOS inhibitors in clinical trials. We also discuss the possible directions of NO/NOS therapies in the immediate future.
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spelling doaj.art-feef4b1889d74806ac3925ff5b1e52192023-11-20T06:36:40ZengMDPI AGCancers2072-66942020-07-01127188110.3390/cancers12071881Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon CancerHao Wang0Liye Wang1Zuoxu Xie2Shuang Zhou3Yan Li4Yue Zhou5Meiyan Sun6College of Laboratory Medicine, Jilin Medical University, Jilin 132013, ChinaDepartment of Pharmacological and Pharmaceutical Science, College of Pharmacy, University of Houston, Houston, TX, 77204, USADepartment of Pharmacological and Pharmaceutical Science, College of Pharmacy, University of Houston, Houston, TX, 77204, USADepartment of Pharmacological and Pharmaceutical Science, College of Pharmacy, University of Houston, Houston, TX, 77204, USADepartment of Pharmacological and Pharmaceutical Science, College of Pharmacy, University of Houston, Houston, TX, 77204, USADepartment of Statistics, North Dakota University, Fargo, ND 58105, USACollege of Laboratory Medicine, Jilin Medical University, Jilin 132013, ChinaColorectal cancer (CRC) is one of the most lethal malignancies worldwide and CRC therapy remains unsatisfactory. In recent decades, nitric oxide (NO)—a free-radical gas—plus its endogenous producer NO synthases (NOS), have attracted considerable attention. NO exerts dual effects (pro- and anti-tumor) in cancers. Endogenous levels of NO promote colon neoplasms, whereas exogenously sustained doses lead to cytotoxic functions. Importantly, NO has been implicated as an essential mediator in many signaling pathways in CRC, such as the Wnt/β-catenin and extracellular-signal-regulated kinase (ERK) pathways, which are closely associated with cancer initiation, metastasis, inflammation, and chemo-/radio-resistance. Therefore, NO/NOS have been proposed as promising targets in the regulation of CRC carcinogenesis. Clinically relevant NO-donating agents have been developed for CRC therapy to deliver a high level of NO to tumor sites. Notably, inducible NOS (iNOS) is ubiquitously over-expressed in inflammatory-associated colon cancer. The development of iNOS inhibitors contributes to targeted therapies for CRC with clinical benefits. In this review, we summarize the multifaceted mechanisms of NO-mediated networks in several hallmarks of CRC. We review the clinical manifestation and limitations of NO donors and NOS inhibitors in clinical trials. We also discuss the possible directions of NO/NOS therapies in the immediate future.https://www.mdpi.com/2072-6694/12/7/1881nitric oxideNONO synthasesNOSiNOStargeted therapy
spellingShingle Hao Wang
Liye Wang
Zuoxu Xie
Shuang Zhou
Yan Li
Yue Zhou
Meiyan Sun
Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer
Cancers
nitric oxide
NO
NO synthases
NOS
iNOS
targeted therapy
title Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer
title_full Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer
title_fullStr Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer
title_full_unstemmed Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer
title_short Nitric Oxide (NO) and NO Synthases (NOS)-Based Targeted Therapy for Colon Cancer
title_sort nitric oxide no and no synthases nos based targeted therapy for colon cancer
topic nitric oxide
NO
NO synthases
NOS
iNOS
targeted therapy
url https://www.mdpi.com/2072-6694/12/7/1881
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