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Key Roles of MiT Transcription Factors in Innate Immunity and Inflammation
1Department of Microbiology and Physiological Systems and Program in Innate Immunity, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Abstract:
Microphthalmia/TFE (MiT) transcription factors (TFs), such as transcription factor EB (TFEB) and transcription factor E3 (TFE3), are emerging as key regulators of innate immunity and inflammation. Rapid progress in the field requires a focused update on the latest advances. Recent studies show that TFEB and TFE3 function in innate immune cells to regulate antibacterial and antiviral responses downstream of phagocytosis, interferon (IFN)-γ, lipopolysaccharide (LPS), and adenosine receptors. Moreover, overexpression of TFEB or TFE3 can drive inflammation in vivo, such as in atherosclerosis, while in other scenarios they can perform anti-inflammatory functions. MiT factors may constitute potential therapeutic targets for a broad range of diseases; however, to harness their therapeutic potential, sophisticated ways to manipulate MiT factor activity safely and effectively must be developed.
Insights
Microphthalmia/TFE (MiT) transcription factors, including TFEB and TFE3, are crucial for innate immunity and inflammation. Understanding their dual roles is key to developing new therapies for various diseases.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- Microphthalmia/TFE (MiT) transcription factors (TFs), specifically transcription factor EB (TFEB) and transcription factor E3 (TFE3), are increasingly recognized for their significant roles in regulating innate immunity and inflammatory processes.
- The rapid advancements in this research area necessitate a comprehensive update on the latest findings and their implications.
Purpose of the Study:
- To provide a focused update on recent advances in understanding the function of MiT TFs in innate immunity and inflammation.
- To highlight the dual role of TFEB and TFE3 in both promoting and suppressing inflammation.
- To discuss the potential of MiT factors as therapeutic targets and the challenges in their manipulation.
Main Methods:
- Review of recent scientific literature focusing on MiT TFs (TFEB, TFE3) and their involvement in innate immunity.
- Analysis of studies investigating the molecular mechanisms by which TFEB and TFE3 regulate immune responses.
- Examination of in vivo studies demonstrating the inflammatory or anti-inflammatory effects of TFEB and TFE3 overexpression.
Main Results:
- TFEB and TFE3 are shown to regulate antibacterial and antiviral responses in innate immune cells, acting downstream of key signaling pathways like phagocytosis, interferon-gamma (IFN-γ), lipopolysaccharide (LPS), and adenosine receptors.
- Overexpression of TFEB or TFE3 can induce inflammation in vivo, as observed in conditions like atherosclerosis.
- Conversely, in certain contexts, these MiT factors exhibit anti-inflammatory functions, indicating a complex regulatory role.
Conclusions:
- MiT transcription factors (TFEB and TFE3) play a critical and multifaceted role in the regulation of innate immunity and inflammation.
- These factors represent promising therapeutic targets for a wide spectrum of diseases.
- Further research is required to develop safe and effective methods for manipulating MiT factor activity to harness their therapeutic potential.
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