[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.

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.

Related Concept Videos

NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
Transcription Factors02:16

Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for injury repair.
Co-activators and Co-repressors02:04

Co-activators and Co-repressors

Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
Somatic to iPS Cell Reprogramming01:29

Somatic to iPS Cell Reprogramming

Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012 for this...