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Published on: March 22, 2017
[Role of the transcription factor NF-kappaB in the cardiac cell]
Salomón Hernández Gutiérrez1, Emilio Rojas del Castillo
1Laboratorio de Biología Molecular, Escuela de Medicina Universidad Panamericana, Departamento de Toxicología Ambiental y Medicina Genómica IIB-UNAM.
Abstract:
The signaling pathways that control the life-death switch of a cell are a prime interest in Modern Biology. To this respect, NF-kappaB has emerged as a decisive transcription factor in the cell's response to apoptotic challenge and its effects on apoptosis have far-reaching consequences for normal development and/or homeostasis in many cells and tissues, including the immune system, hair follicles, and epidermal appendages, the liver, and nervous system. In this review we analyze the pivotal role of the transcription factor NF-kappaB in the normal functioning of the cardiac cell and its implication on some of the most frequent cardiac pathologies, such as ischemia-reperfusion injury, ischemic precondition, hypertrophy, atherosclerosis and cardiac arrest. While NF-kappaB is commonly found to be cytoprotective, there are a number of instances where it is proapoptotic depending on the inducing stimulus and the cell context. Significant progress has been made in understanding its mode of action and its interplay with other key factors. These studies identified many anti- and pro-apoptotic NF-kappaB regulated genes that mediate its activity, these important new insights fuel hope that novel approaches will be developed to control the effects of NF-kappaB in cardiac pathologies.
Insights
Nuclear Factor kappa B (NF-kappaB) plays a key role in cardiac cell life and death. Understanding its dual role in apoptosis offers hope for new cardiac disease treatments.
Area of Science:
- Molecular Biology
- Cardiovascular Biology
- Cell Signaling
Background:
- Cellular life-death decisions are critical in modern biology.
- Nuclear Factor kappa B (NF-kappaB) is a key transcription factor regulating apoptosis.
- NF-kappaB influences homeostasis and development across various tissues, including the immune system, liver, and nervous system.
Purpose of the Study:
- To review the role of NF-kappaB in normal cardiac cell function.
- To analyze NF-kappaB's implication in major cardiac pathologies.
- To explore the dual cytoprotective and pro-apoptotic functions of NF-kappaB in the heart.
Main Methods:
- Literature review of scientific studies on NF-kappaB and cardiac biology.
- Analysis of NF-kappaB's involvement in cardiac pathologies like ischemia-reperfusion injury, hypertrophy, and atherosclerosis.
- Examination of NF-kappaB's regulatory mechanisms and interactions with other cellular factors.
Main Results:
- NF-kappaB is crucial for cardiac cell function and survival.
- NF-kappaB exhibits context-dependent roles, acting as both cytoprotective and pro-apoptotic.
- Numerous anti- and pro-apoptotic genes regulated by NF-kappaB have been identified.
Conclusions:
- NF-kappaB's complex role in cardiac pathologies is highlighted.
- Understanding NF-kappaB's mechanisms provides a basis for novel therapeutic strategies.
- Targeting NF-kappaB may offer new approaches to manage cardiovascular diseases.
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