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NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

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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...
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Decreasing Function01:27

Decreasing Function

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A decreasing function describes a relationship where the output consistently declines as the input increases. This means that for any two input values, if one is greater than the other, the corresponding output is smaller. Mathematically, a function f is decreasing on an interval I if for every x1 < x2​ in I, f (x1) > f (x2). This type of behavior is visually identified on a graph that slopes downward from left to right.The nature of a function can be analyzed by calculating...
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Autophagic Cell Death01:18

Autophagic Cell Death

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Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
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Overview of Cell Death01:30

Overview of Cell Death

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Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
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A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
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Decreased pulse rate

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Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with...
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Video Experimental Relacionado

Updated: Feb 13, 2026

Methods for the Modulation and Analysis of NF-&#954;B-dependent Adult Neurogenesis
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Methods for the Modulation and Analysis of NF-κB-dependent Adult Neurogenesis

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La disminución celular de Mg2+ causa una forma distintiva de muerte celular dependiente de NF-κB.

Koyuki Kawamura1, Koya Ono2, Eikan Mishima3

  • 1Laboratory of Biorecognition Chemistry, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.

Cell reports
|February 11, 2026
PubMed
Resumen
Este resumen es generado por máquina.

El magnesio (Mg2+) es vital para la función celular. Los investigadores descubrieron que la reducción de Mg2+ desencadena una nueva vía de muerte celular dependiente de NF-κB, ofreciendo nuevos conocimientos sobre la regulación celular y la biología del cáncer.

Palabras clave:
CNNM y CNNM también.CP: Biología celular.El NF-κBB es el NF-κB.PRL PRL es el nombre que se le da a un producto.La polimerización de la actina por polimerización de la actina.El magnesio Magnesio Magnesio Magnesio Magnesio.regulada de la muerte celular.

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Área de la Ciencia:

  • Biología celular Biología celular.
  • La bioquímica es la bioquímica.
  • Biología Molecular Biología Molecular

Sus antecedentes:

  • Los iones de magnesio (Mg2+) son cofactores cruciales para numerosas enzimas, jugando un papel fundamental en los procesos celulares.
  • La fosfatasa de la familia de proteínas del hígado regenerador (PRL) a menudo está regulada al alza en el cáncer e inhibe los transportadores de eflujo de ciclina M (CNNM) Mg2+.

Objetivo del estudio:

  • Para investigar el papel fisiológico de la PRL en la homeostasis celular Mg2+.
  • Para dilucidar los mecanismos subyacentes a la muerte celular inducida por la desregulación de Mg2+.

Principales métodos:

  • Utilizó enfoques genéticos combinados de nocaut y nocaut para estudiar PRL.
  • Se realizó un análisis transcriptómico para identificar vías celulares activadas.
  • Investigó el papel de la vía NF-κB en la homeostasis Mg2+ y la muerte celular.
  • Se examinaron los efectos de la sobreexpresión de CNNM en los niveles intracelulares de Mg2+ y la viabilidad celular.

Principales resultados:

  • La deleción de PRL redujo significativamente los niveles intracelulares de Mg2+, lo que condujo a una muerte celular extensa.
  • El análisis transcriptómico reveló la activación de la vía NF-κB tras la deleción de PRL.
  • La deleción genética de la subunidad p65 de NF-κB abrogó la muerte celular inducida por la deleción de PRL.
  • La sobreexpresión de CNNM imitó los efectos de la deleción de PRL, causando una disminución de Mg2+, la activación de NF-κB y la muerte celular.
  • Se observaron características morfológicas únicas, incluidas las protuberancias impulsadas por la actina, en esta distinta modalidad de muerte celular.

Conclusiones:

  • El agotamiento intracelular de Mg2+ desencadena un nuevo modo de muerte celular dependiente de NF-κB.
  • PRL y CNNM juegan un papel crítico en el mantenimiento de la homeostasis celular Mg2+.
  • Esta vía de muerte celular dependiente de Mg2+ presenta una nueva área de investigación en la regulación celular y la terapia del cáncer.