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Updated: Feb 7, 2026

Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain
Published on: May 21, 2019
Targeting ubiquitin-proteasome pathway by natural, in particular polyphenols, anticancer agents: Lessons learned from
Seyed Fazel Nabavi1, Atanas G Atanasov2, Haroon Khan3
1Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
Abstract:
The ubiquitin-proteasome pathway (UPP) is the main non-lysosomal proteolytic system responsible for degradation of most intracellular proteins, specifically damaged and regulatory proteins. The UPP is implicated in all aspects of the cellular metabolic networks including physiological or pathological conditions. Alterations in the components of the UPP can lead to stabilization of oncoproteins or augmented degradation of tumour suppressor favouring cancer appearance and progression. Polyphenols are natural compounds that can modulate proteasome activity or the expression of proteasome subunits. All together and due to the pleiotropic functions of UPP, there is a great interest in this proteasome system as a promising therapeutic target for the development of novel anti-cancer drugs. In the present review, the main features of the UPP and its implication in cancer development and progression are described, highlighting the importance of bioactive polyphenols that target the UPP as potential anti-cancer agents.
Insights
The ubiquitin-proteasome pathway (UPP) degrades proteins and is crucial in cancer. Certain polyphenols can target the UPP, offering potential as novel anti-cancer drugs.
Area of Science:
- Molecular Biology
- Biochemistry
- Oncology
Background:
- The ubiquitin-proteasome pathway (UPP) is the primary cellular mechanism for degrading damaged and regulatory proteins.
- Dysregulation of the UPP is linked to cancer development and progression through altered protein stability.
- Polyphenols are natural compounds with the ability to influence proteasome activity and subunit expression.
Purpose of the Study:
- To review the key characteristics of the UPP.
- To elucidate the UPP's role in cancer initiation and advancement.
- To highlight polyphenols as potential therapeutic agents targeting the UPP for cancer treatment.
Main Methods:
- Literature review of the ubiquitin-proteasome pathway.
- Analysis of UPP involvement in cancer pathogenesis.
- Evaluation of polyphenol interactions with the UPP.
Main Results:
- The UPP regulates critical cellular processes and its components are frequently altered in cancer.
- Modulation of the UPP can impact the stability of proteins involved in cell cycle control and tumor suppression.
- Bioactive polyphenols demonstrate the capacity to modulate UPP function.
Conclusions:
- The UPP is a significant therapeutic target for anti-cancer drug development.
- Polyphenols targeting the UPP represent a promising strategy for novel cancer therapies.
- Understanding UPP modulation by polyphenols is key to developing new anti-cancer treatments.
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