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Published on: January 12, 2020
The NF-κB Pharmacopeia: Novel Strategies to Subdue an Intractable Target
Daniela Verzella1,2, Jessica Cornice2, Paola Arboretto2
1Department of Biotechnological and Applied Clinical Sciences (DISCAB), University of L'Aquila, 67100 L'Aquila, Italy.
Abstract:
NF-κB transcription factors are major drivers of tumor initiation and progression. NF-κB signaling is constitutively activated by genetic alterations or environmental signals in many human cancers, where it contributes to almost all hallmarks of malignancy, including sustained proliferation, cell death resistance, tumor-promoting inflammation, metabolic reprogramming, tissue invasion, angiogenesis, and metastasis. As such, the NF-κB pathway is an attractive therapeutic target in a broad range of human cancers, as well as in numerous non-malignant diseases. Currently, however, there is no clinically useful NF-κB inhibitor to treat oncological patients, owing to the preclusive, on-target toxicities of systemic NF-κB blockade. In this review, we discuss the principal and most promising strategies being developed to circumvent the inherent limitations of conventional IκB kinase (IKK)/NF-κB-targeting drugs, focusing on new molecules that target upstream regulators or downstream effectors of oncogenic NF-κB signaling, as well as agents targeting individual NF-κB subunits.
Insights
Nuclear factor kappa B (NF-κB) drives cancer, but current inhibitors cause toxicity. New strategies target upstream or downstream NF-κB effectors to overcome these limitations for cancer therapy.
Area of Science:
- Oncology
- Molecular Biology
- Immunology
Background:
- Nuclear factor kappa B (NF-κB) signaling is crucial in cancer initiation and progression.
- Constitutive NF-κB activation contributes to major hallmarks of malignancy, including proliferation, inflammation, and metastasis.
- NF-κB is a promising therapeutic target for various cancers and non-malignant diseases.
Purpose of the Study:
- To review strategies for overcoming toxicities associated with conventional NF-κB inhibitors.
- To highlight novel therapeutic approaches targeting oncogenic NF-κB signaling.
Main Methods:
- Discussion of strategies targeting upstream regulators of NF-κB.
- Review of agents targeting downstream effectors of NF-κB.
- Exploration of therapies targeting individual NF-κB subunits.
Main Results:
- Conventional NF-κB inhibitors face challenges due to on-target toxicities.
- Emerging strategies focus on circumventing systemic NF-κB blockade limitations.
- New molecules target specific components of the NF-κB pathway for improved safety and efficacy.
Conclusions:
- Developing clinically useful NF-κB inhibitors for cancer treatment remains a significant challenge.
- Targeting upstream regulators, downstream effectors, or individual subunits offers promising avenues.
- Novel therapeutic strategies are essential to harness the potential of NF-κB inhibition in oncology.
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