General Information of the Ferroptosis Regulator (ID: REG10076)
Regulator Name Transcription factor Jun (JUN)
Synonyms
Activator protein 1; Proto-oncogene c-Jun; Transcription factor AP-1 subunit Jun; V-jun avian sarcoma virus 17 oncogene homolog; p39
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Gene Name JUN
Gene ID 3725
Regulator Type Protein coding
Uniprot ID P05412
Sequence
MTAKMETTFYDDALNASFLPSESGPYGYSNPKILKQSMTLNLADPVGSLKPHLRAKNSDL
LTSPDVGLLKLASPELERLIIQSSNGHITTTPTPTQFLCPKNVTDEQEGFAEGFVRALAE
LHSQNTLPSVTSAAQPVNGAGMVAPAVASVAGGSGSGGFSASLHSEPPVYANLSNFNPGA
LSSGGGAPSYGAAGLAFPAQPQQQQQPPHHLPQQMPVQHPRLQALKEEPQTVPEMPGETP
PLSPIDMESQERIKAERKRMRNRIAASKCRKRKLERIARLEEKVKTLKAQNSELASTANM
LREQVAQLKQKVMNHVNSGCQLMLTQQLQTF

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Family BZIP family
Function
Transcription factor that recognizes and binds to the AP-1 consensus motif 5'-TGA[GC]TCA-3'. Heterodimerizes with proteins of the FOS family to form an AP-1 transcription complex, thereby enhancing its DNA binding activity to the AP-1 consensus sequence 5'-TGA[GC]TCA-3' and enhancing its transcriptional activity. Together with FOSB, plays a role in activation-induced cell death of T cells by binding to the AP-1 promoter site of FASLG/CD95L, and inducing its transcription in response to activation of the TCR/CD3 signaling pathway. Promotes activity of NR5A1 when phosphorylated by HIPK3 leading to increased steroidogenic gene expression upon cAMP signaling pathway stimulation. Involved in activated KRAS-mediated transcriptional activation of USP28 in colorectal cancer (CRC) cells. Binds to the USP28 promoter in colorectal cancer (CRC) cells.

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HGNC ID
HGNC:6204
KEGG ID hsa:3725
Full List of the Ferroptosis Target of This Regulator and Corresponding Disease/Drug Response(s)
JUN can regulate the following target(s), and cause disease/drug response(s). You can browse detail information of target(s) or disease/drug response(s).
Browse Target
Browse Disease
Nuclear receptor coactivator 4 (NCOA4) [Driver]
In total 1 item(s) under this target
Experiment 1 Reporting the Ferroptosis Target of This Regulator [1]
Target for Ferroptosis Driver
Responsed Disease Degenerative arthritis ICD-11: FA05
Pathway Response Fatty acid metabolism hsa01212
Ferroptosis hsa04216
Autophagy hsa04140
Cell Process Cell ferroptosis
Cell autophagy
In Vitro Model
hCDs (Chondrocytes)
In Vivo Model
Adult male C57BL/6 mice (eight weeks of age) were used for in vivo experiments. We randomly divided mice into four groups with 9 mice per group: SHAM + AAV9-GFP, SHAM + AAV9-NCOA4, DMM + AAV9-GFP, and DMM + AAV9-NCOA4 groups. For in vivo experiment of SP600125 administration, we randomly divided mice into three groups with 6 mice per group: DMM + AAV9-GFP, DMM + AAV9-GFP + SP600125, and DMM + AAV9-NCOA4 + SP600125. 10 ul of SP600125 (1 mg/kg) or vehicle solution was injected articularly once per week for 7 weeks.

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Response regulation NCOA4 was upregulated in a JNK- JUN signaling-dependent manner in which JUN could directly bind to the promoter of Ncoa4 and initial the transcription of Ncoa4. This work highlights the role of JNK- JUN-NCOA4 axis and ferritinophagy in chondrocyte ferroptosis and osteoarthritis (OA) pathogenesis, suggesting this axis as a potential target for OA treatment.
Unspecific Target [Unspecific Target]
In total 1 item(s) under this target
Experiment 1 Reporting the Ferroptosis Target of This Regulator [2]
Responsed Disease Hepatocellular carcinoma ICD-11: 2C12
Pathway Response Ferroptosis hsa04216
Cell Process Cell ferroptosis
Cell proliferation
In Vitro Model
BEL-7402 cells Endocervical adenocarcinoma Homo sapiens CVCL_5492
SMMC-7721 cells Endocervical adenocarcinoma Homo sapiens CVCL_0534
In Vivo Model
Eight-week-old athymic nude mice were obtained from Bikai Laboratory Animal Crop (Bikai, Shanghai, China) and Bel-7402 cells (initial 5 x 106) were subcutaneously injected into each mouse. Dimethy sulfoxide (DMSO) or piperazine erastin (5 mg/kg, MedChemExpress, Monmouth Junction, NJ, USA) was subcutaneously injected once every day after xenografts were formed.

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Response regulation A positive correlation between c-Jun O-GlcNAcylation and GSH was observed in clinical samples. Collectively, O-GlcNAcylated c-Jun represents an obstructive factor to ferroptosis, and targeting O-GlcNAcylated c-Jun might be helpful for treating liver cancer.
Degenerative arthritis [ICD-11: FA05]
In total 1 item(s) under this disease
Experiment 1 Reporting the Ferroptosis-centered Disease Response [1]
Target Regulator Transcription factor Jun (JUN) Protein coding
Pathway Response Fatty acid metabolism hsa01212
Ferroptosis hsa04216
Autophagy hsa04140
Cell Process Cell ferroptosis
Cell autophagy
In Vitro Model
hCDs (Chondrocytes)
In Vivo Model
Adult male C57BL/6 mice (eight weeks of age) were used for in vivo experiments. We randomly divided mice into four groups with 9 mice per group: SHAM + AAV9-GFP, SHAM + AAV9-NCOA4, DMM + AAV9-GFP, and DMM + AAV9-NCOA4 groups. For in vivo experiment of SP600125 administration, we randomly divided mice into three groups with 6 mice per group: DMM + AAV9-GFP, DMM + AAV9-GFP + SP600125, and DMM + AAV9-NCOA4 + SP600125. 10 ul of SP600125 (1 mg/kg) or vehicle solution was injected articularly once per week for 7 weeks.

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Response regulation NCOA4 was upregulated in a JNK- JUN signaling-dependent manner in which JUN could directly bind to the promoter of Ncoa4 and initial the transcription of Ncoa4. This work highlights the role of JNK- JUN-NCOA4 axis and ferritinophagy in chondrocyte ferroptosis and osteoarthritis (OA) pathogenesis, suggesting this axis as a potential target for OA treatment.
Hepatocellular carcinoma [ICD-11: 2C12]
In total 1 item(s) under this disease
Experiment 1 Reporting the Ferroptosis-centered Disease Response [2]
Target Regulator Transcription factor Jun (JUN) Protein coding
Pathway Response Ferroptosis hsa04216
Cell Process Cell ferroptosis
Cell proliferation
In Vitro Model
BEL-7402 cells Endocervical adenocarcinoma Homo sapiens CVCL_5492
SMMC-7721 cells Endocervical adenocarcinoma Homo sapiens CVCL_0534
In Vivo Model
Eight-week-old athymic nude mice were obtained from Bikai Laboratory Animal Crop (Bikai, Shanghai, China) and Bel-7402 cells (initial 5 x 106) were subcutaneously injected into each mouse. Dimethy sulfoxide (DMSO) or piperazine erastin (5 mg/kg, MedChemExpress, Monmouth Junction, NJ, USA) was subcutaneously injected once every day after xenografts were formed.

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Response regulation A positive correlation between c-Jun O-GlcNAcylation and GSH was observed in clinical samples. Collectively, O-GlcNAcylated c-Jun represents an obstructive factor to ferroptosis, and targeting O-GlcNAcylated c-Jun might be helpful for treating liver cancer.
References
Ref 1 JNK-JUN-NCOA4 axis contributes to chondrocyte ferroptosis and aggravates osteoarthritis via ferritinophagy. Free Radic Biol Med. 2023 May 1;200:87-101. doi: 10.1016/j.freeradbiomed.2023.03.008. Epub 2023 Mar 11.
Ref 2 O-GlcNAcylated c-Jun antagonizes ferroptosis via inhibiting GSH synthesis in liver cancer. Cell Signal. 2019 Nov;63:109384. doi: 10.1016/j.cellsig.2019.109384. Epub 2019 Aug 5.