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Updated: Oct 12, 2025

Generation of a RIP1 Knockout U937 Cell Line Using the CRISPR-Cas9 System
Published on: April 11, 2025
Genetic Regulation of RIPK1 and Necroptosis
Daichao Xu1, Chengyu Zou1, Junying Yuan1
1Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China;
Abstract:
The receptor-interacting protein kinase 1 (RIPK1) is recognized as a master upstream regulator that controls cell survival and inflammatory signaling as well as multiple cell death pathways, including apoptosis and necroptosis. The activation of RIPK1 kinase is extensively modulated by ubiquitination and phosphorylation, which are mediated by multiple factors that also control the activation of the NF-κB pathway. We discuss current findings regarding the genetic modulation of RIPK1 that controls its activation and interaction with downstream mediators, such as caspase-8 and RIPK3, to promote apoptosis and necroptosis. We also address genetic autoinflammatory human conditions that involve abnormal activation of RIPK1. Leveraging these new genetic and mechanistic insights, we postulate how an improved understanding of RIPK1 biology may support the development of therapeutics that target RIPK1 for the treatment of human inflammatory and neurodegenerative diseases.
Insights
Receptor-interacting protein kinase 1 (RIPK1) regulates cell death and inflammation. Genetic insights into RIPK1
Area of Science:
- Cellular Biology
- Immunology
- Genetics
Background:
- Receptor-interacting protein kinase 1 (RIPK1) is a key regulator of cell survival, inflammatory signaling, and cell death pathways like apoptosis and necroptosis.
- RIPK1 kinase activation is modulated by ubiquitination and phosphorylation, influencing the NF-κB pathway.
- Genetic factors control RIPK1 activation and its interactions with downstream effectors, including caspase-8 and RIPK3.
Purpose of the Study:
- To review current findings on the genetic modulation of RIPK1.
- To discuss the role of RIPK1 in human autoinflammatory conditions.
- To explore therapeutic strategies targeting RIPK1 for inflammatory and neurodegenerative diseases.
Main Methods:
- Literature review of genetic and mechanistic studies on RIPK1.
- Analysis of RIPK1's role in apoptosis and necroptosis.
- Examination of genetic autoinflammatory diseases linked to RIPK1.
Main Results:
- Genetic modulation significantly impacts RIPK1 activation and its downstream signaling.
- Abnormal RIPK1 activation is implicated in human autoinflammatory conditions.
- RIPK1 interacts with caspase-8 and RIPK3 to mediate cell death.
Conclusions:
- Understanding RIPK1's genetic and mechanistic roles is crucial.
- Targeting RIPK1 offers potential therapeutic avenues for inflammatory and neurodegenerative diseases.
- Further research into RIPK1 biology can advance treatment strategies.
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