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Overexpression of CiIKKβ enhances CIK cell viability against ER stress.
- Source :
-
Fish & shellfish immunology [Fish Shellfish Immunol] 2019 Sep; Vol. 92, pp. 706-711. Date of Electronic Publication: 2019 Jul 02. - Publication Year :
- 2019
-
Abstract
- Recently, studies have shown that IκB kinase β (IKKβ), a critical kinase in the nucleus factor kappa-B (NF-κB) pathway, participates in inflammatory responses associated with unfolded protein response (UPR) and plays an important role in ER stress-induced cell death. The unfolded protein response (UPR), which is a regulatory system to restore cellular homeostasis in the endoplasmic reticulum (ER), such as oxidative stress, bacterial infection, and virus invasion. The UPR pathways have been reported to be involved in immune responses in mammals, including the classical NF-κB pathway. However, the molecular mechanism of their crosstalk remains to be elucidated. Previously, we demonstrated that IKKβ also has some conserved functions between fish and human, as grass carp (Ctenopharyngodon idella) IKKβ (CiIKKβ) can activate NF-κB pathway. In this study, we found that CiIKKβ level in nucleus was elevated under ER stress and CiIKKβ can interact with grass carp X-box-binding protein 1 (CiXBP1S), a key transcription factor in UPR. Consistently, fluorescent histochemical analysis of grass carp kidney (CIK) cells indicated that CiIKKβ and CiXBP1S colocalized under ER stress. Furthermore, overexpression of CiIKKβ in CIK cells enhanced ER stress tolerance by regulating UPR signaling and resulted in the significant increase of cell viability.<br /> (Copyright © 2019 Elsevier Ltd. All rights reserved.)
- Subjects :
- Animals
Carps immunology
Cell Nucleus genetics
Cell Survival
Fish Proteins immunology
I-kappa B Kinase immunology
Unfolded Protein Response
X-Box Binding Protein 1 immunology
Carps genetics
Endoplasmic Reticulum Stress
Fish Proteins genetics
Gene Expression Regulation immunology
I-kappa B Kinase genetics
X-Box Binding Protein 1 genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1095-9947
- Volume :
- 92
- Database :
- MEDLINE
- Journal :
- Fish & shellfish immunology
- Publication Type :
- Academic Journal
- Accession number :
- 31276789
- Full Text :
- https://doi.org/10.1016/j.fsi.2019.07.003