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Updated: Jun 20, 2025

In Vitro Analysis of E3 Ubiquitin Ligase Function
Published on: May 14, 2021
Role of MARCH E3 ubiquitin ligases in cancer development
Abhayananda Behera1, Deepanshi Sachan1, Ganesh Kumar Barik2
1Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India.
Abstract:
Membrane-associated RING-CH (MARCH) E3 ubiquitin ligases, a family of RING-type E3 ubiquitin ligases, have garnered increased attention for their indispensable roles in immune regulation, inflammation, mitochondrial dynamics, and lipid metabolism. The MARCH E3 ligase family consists of eleven distinct members, and the dysregulation of many of these members has been documented in several human malignancies. Over the past two decades, extensive research has revealed that MARCH E3 ligases play pivotal roles in cancer progression by ubiquitinating key oncogenes and tumor suppressors and orchestrating various signaling pathways. Some MARCH E3s act as oncogenes, while others act as tumor suppressors, and the majority of MARCH E3s play both oncogenic and tumor suppressive roles in a context-dependent manner. Notably, there is special emphasis on the sole mitochondrial MARCH E3 ligase MARCH5, which regulates mitochondrial homeostasis within cancer cells. In this review, we delve into the diverse functions of MARCH E3 ligases across different cancer types, shedding light on the underlying molecular mechanisms mediating their effects, their regulatory effects on cancer and their potential as therapeutic targets.
Insights
Membrane-associated RING-CH (MARCH) E3 ubiquitin ligases are crucial in immunity and metabolism. Their dysregulation impacts cancer, with some acting as oncogenes or tumor suppressors, highlighting their therapeutic potential.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Membrane-associated RING-CH (MARCH) E3 ubiquitin ligases are critical regulators of cellular processes.
- Dysregulation of MARCH E3 ligases is implicated in various human cancers.
- These ligases play multifaceted roles in immune regulation, inflammation, and metabolism.
Purpose of the Study:
- To review the diverse functions of MARCH E3 ligases in different cancer types.
- To elucidate the molecular mechanisms underlying their roles in cancer progression.
- To highlight MARCH E3 ligases as potential therapeutic targets in oncology.
Main Methods:
- Literature review of studies on MARCH E3 ligases and cancer.
- Analysis of molecular mechanisms involving ubiquitination of oncogenes and tumor suppressors.
- Examination of the role of MARCH5 in mitochondrial homeostasis within cancer cells.
Main Results:
- MARCH E3 ligases exhibit context-dependent oncogenic or tumor suppressive activities.
- They regulate key signaling pathways and proteins involved in cancer.
- MARCH5 specifically influences mitochondrial dynamics in cancer cells.
Conclusions:
- MARCH E3 ligases are pivotal in cancer development and progression.
- Understanding their dual roles is essential for targeted cancer therapies.
- MARCH E3 ligases, including MARCH5, represent promising therapeutic targets.
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