RIPK1 regulates cell function and death mediated by UVB radiation and TNF-α.
Mol Immunol
; 135: 304-311, 2021 07.
Article
em En
| MEDLINE
| ID: mdl-33964631
ABSTRACT
The RIP family plays a key role in mediating cell inflammation, oxidative stress and death. Among them, RIPK1, as an important regulatory factor in the upstream of the NF-κB pathway, is involved in multiple pathways of cell inflammation and death. Epidermal cells constitute the outermost barrier of the human body. Radiation can induce epidermal cell death, inflammation and oxidative stress to cause damage. Therefore, this paper selected HaCaT cell and used CRISPR/Cas technology to construct a cell model of stable knockout of RIPK1 gene, to analyze the effect and regulation of RIPK1 knockout on the function and death of HaCaT cells induced by UVB or TNF-α. The results showed that knockout of RIPK1 had no significant effect on the morphology of HaCaT cells at rest, but it led to slowing cell proliferation and blocking the G2M phase of cell cycle. Compared with HaCaTWT, HaCaTRIP1KO was abnormally sensitive to TNF-α-induced cell death and apoptosis, and may be associated with inhibition of NF-κB pathway. Knocking out RIPK1 led to a more significant inhibition of cell growth by UVB, and up-regulation of the expression of the inflammatory factor IL-1α. P38 MAPK and NF-κB pathways may be involved this process. This study further found that RIPK1 in epidermal cell has a regulatory function on pro-survival signals.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
/
Prevencao_e_fatores_de_risco
/
Agentes_cancerigenos
/
Radiacao_solar
Base de dados:
MEDLINE
Assunto principal:
Raios Ultravioleta
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Fator de Necrose Tumoral alfa
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Apoptose
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Proteína Serina-Treonina Quinases de Interação com Receptores
/
Células Epidérmicas
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Mol Immunol
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China