| 2002 |
SESN2 (Hi95) is a stress-responsive gene transcriptionally induced by prolonged hypoxia, DNA damage (in a p53-dependent manner), and oxidative stress (p53-independent). Overexpression is toxic to many cell types, causing apoptosis or sensitization to stress, but conditional overexpression in MCF7 cells protects against hypoxia/glucose deprivation and H2O2-induced cell death. |
cDNA microarray, conditional overexpression (tet-off system), cell viability assays |
Oncogene |
Medium |
12203114
|
| 2016 |
SESN2 suppresses prolonged NLRP3 inflammasome activation by inducing mitophagy in macrophages. Mechanistically, SESN2 (1) facilitates perinuclear clustering of mitochondria by mediating SQSTM1 aggregation and its binding to K63-linked ubiquitins on the mitochondrial surface ('mitochondrial priming'), and (2) activates autophagic machinery by increasing ULK1 protein levels. SESN2 expression in macrophages is induced by NOS2-derived NO. Sesn2-deficient mice show defective mitophagy and hyperactivation of inflammasomes with increased mortality in two sepsis models. |
Genetic knockout mice (two sepsis models), siRNA knockdown, immunofluorescence, co-immunoprecipitation, Western blot, ubiquitin binding assays |
Autophagy |
High |
27337507
|
| 2016 |
SESN2 expression is transcriptionally induced by ISO treatment via a MAPK8/JNK1-JUN-dependent mechanism: ISO triggers MAPK8-dependent JUN activation and JUN binding to an AP-1 site in the SESN2 promoter, leading to SESN2 transcriptional induction that is required for autophagy induction in bladder cancer cells. |
Promoter-binding (ChIP/AP-1 reporter), siRNA knockdown, kinase inhibitors, Western blot |
Autophagy |
Medium |
27171279
|
| 2016 |
UVB induces SESN2 expression in melanocytes through the p53 and AKT3 pathways; SESN2 negatively regulates UVB-induced DNA damage repair. UVA induces SESN2 through mitochondria (not Nrf2); SESN2 ablation increased UVA-induced Nrf2 induction and inhibited UVA-induced ROS production, identifying SESN2 as an upstream regulator of Nrf2. |
siRNA knockdown, pathway inhibitors, ROS measurement, DNA damage assays, immunoblot |
Photochemistry and photobiology |
Medium |
27463837
|
| 2017 |
LSD1/KDM1A epigenetically represses SESN2 transcription by binding to its promoter. Pharmacological inhibition or selective ablation of LSD1 de-represses SESN2 expression, which then inhibits mTORC1 activity and promotes autophagy in neuroblastoma cells. SESN2 overexpression alone suffices to promote autophagy, and SESN2 loss reduces LSD1 inhibition-induced autophagy. |
ChIP (LSD1 binding to SESN2 promoter), LSD1 inhibitors (TCP, SP2509), siRNA/shRNA knockdown, mTORC1 activity assays, autophagy assays |
Oncogene |
High |
28783174
|
| 2018 |
SESN2 facilitates Parkin translocation to defective mitochondria during mitophagy by interacting with ULK1 and assisting ULK1-mediated phosphorylation of Beclin1 at serine-14, which is required for Beclin1-Parkin binding prior to mitochondrial translocation. The trigger for SESN2 activation is mitochondrial superoxide. SESN2-mediated cytosolic Parkin-Beclin1 interaction is PINK1-independent, but mitochondrial translocation of Parkin is PINK1-dependent. |
Co-immunoprecipitation, siRNA knockdown, phosphorylation site mapping (S14-Beclin1), mitochondrial superoxide scavenging, mitophagy assays |
Scientific reports |
High |
29330382
|
| 2018 |
RBX1 is an E3 ubiquitin ligase for SESN2 that mediates K48-linked ubiquitination of SESN2 upon prolonged mitochondrial damage (CCCP treatment), leading to SESN2 degradation and increased cell death. Downregulation of RBX1 stabilizes SESN2, reduces mitochondrial ROS, and reduces cell death. |
Co-immunoprecipitation, ubiquitination assays (K48-linkage), siRNA knockdown, cell viability assays |
Molecular and cellular biochemistry |
Medium |
29294217
|
| 2018 |
SESN2 negatively regulates mTORC1 activity in an amino acid-sensing context in cow mammary epithelial cells. Amino acid starvation increases SESN2 expression; SESN2 overexpression suppresses mTORC1 activation, cell proliferation, and casein synthesis; SESN2 inhibition reverses these effects. |
Overexpression and inhibition experiments, mTORC1 pathway readouts (Western blot), cell proliferation assays |
Scientific reports |
Medium |
29500367
|
| 2018 |
BDNF promotes ATF4 elevation in neurons in a TrkB-dependent, eIF2α-independent manner. ATF4 then directly mediates BDNF-induced transcriptional induction of SESN2, establishing BDNF→TrkB→ATF4→SESN2 as a neuroprotective signaling axis. |
Transcriptome analysis, ATF4 knockdown, TrkB signaling inhibition, Western blot, neuronal cultures |
Frontiers in molecular neuroscience |
Medium |
29599707
|
| 2019 |
SESN2 interacts with Parkin and p62/SQSTM1, promotes accumulation of Parkin to mitochondria, and thereby alleviates doxorubicin-caused inhibition of Parkin-mediated mitophagy. SESN2 knockout (by sgRNA) inhibits Parkin-mediated mitophagy, increases cardiomyocyte apoptosis, and worsens mitochondrial dysfunction; ectopic SESN2 expression rescues these effects. |
Co-immunoprecipitation, CRISPR sgRNA knockout, mitophagy assays, electron microscopy, echocardiography, rat model |
Journal of molecular and cellular cardiology |
High |
31199952
|
| 2019 |
ER stress-induced CHOP transcription factor directly binds the SESN2 promoter in colorectal cancer cells, increasing SESN2 expression, which then promotes autophagy. DHA + oxaliplatin enhance CHOP binding to the SESN2 promoter. |
Chromatin immunoprecipitation (CHOP binding to SESN2 promoter), Western blot, autophagy assays, in vitro and in vivo |
Cancers |
Medium |
31337142
|
| 2020 |
SESN2 localizes to mitochondria, as demonstrated by subcellular fractionation and live-cell imaging experiments, and can directly regulate mitochondrial functions through mTORC1-independent mechanisms. |
Subcellular fractionation, mitochondrial localization experiments, live imaging |
PloS one |
Medium |
32287270
|
| 2020 |
JMJD3 histone demethylase negatively regulates SESN2 transcription by reducing H3K27me3 tri-methylation in the SESN2 promoter region. JMJD3 inhibition or knockdown restores SESN2 expression and protects against doxorubicin-induced cardiomyopathy; JMJD3 overexpression aggravates cardiomyopathy in a SESN2-dependent manner. |
ChIP (H3K27me3 at SESN2 promoter), JMJD3 knockdown/overexpression, SESN2 rescue overexpression, Western blot, cardiac functional assays |
Frontiers in cell and developmental biology |
High |
33117796
|
| 2021 |
SESN2 is transcriptionally induced by the ER stress-activated transcription factor C/EBPβ in denervated skeletal muscle. Once induced, SESN2 inhibits mTORC1 to attenuate ER stress, and also activates autophagic machinery to facilitate SQSTM1/p62 aggregation on the mitochondrial surface, promoting mitophagy and protecting against muscle atrophy. |
Knockdown and overexpression (AAV delivery), denervation mouse model, Western blot, electron microscopy, immunofluorescence, mTORC1 activity assays |
Cell death & disease |
Medium |
34429398
|
| 2021 |
SESN2 promotes the formation of a complex between AMPK and LKB1 (as demonstrated by immunoprecipitation), thereby facilitating AMPK-T172 phosphorylation. This mechanism underlies globular adiponectin-induced AMPK activation and insulin sensitization in skeletal muscle; these effects are absent in SESN2-/- mice. |
Co-immunoprecipitation, SESN2 knockout mice, AMPK phosphorylation assays, insulin signaling readouts |
Sports medicine and health science |
Medium |
36994173
|
| 2021 |
SESN2 inhibits mTORC1 activity through interaction with the GATOR2 protein complex, preventing GATOR2's inhibitory effect on GATOR1, which stimulates GTPase activity of RagA/B, preventing mTORC1 lysosomal translocation and activation. This pathway is established as SESN2's primary mTORC1-inhibitory mechanism. |
Pathway analysis, protein interaction (GATOR2/GATOR1/Rag GTPases), cited as established mechanism in review context within original research paper |
PloS one |
Medium |
32287270
|
| 2021 |
SESN2 increases Nrf2 protein expression by enhancing p62-dependent autophagy in endothelial progenitor cells treated with angiotensin II, providing a mechanism linking SESN2 to antioxidant defense via the Keap1/Nrf2 axis. |
Western blot, siRNA knockdown of Nrf2, p62 autophagy assays, immunofluorescence, EPCs from human umbilical cord blood |
Aging |
Medium |
33231566
|
| 2021 |
PERK pathway upregulation increases SESN2 expression in porcine oocytes. SESN2 acts upstream of NRF2: SESN2 siRNA knockdown blocks NRF2 nuclear activation, while NRF2 inhibition does not affect SESN2 protein levels. SESN2 deficiency blocks nuclear NRF2 activity and disrupts spindle assembly during oocyte maturation. |
siRNA knockdown, Western blot, immunofluorescence, NRF2 inhibitor, porcine oocyte IVM |
Free radical biology & medicine |
Medium |
34923100
|
| 2023 |
UPRmt upregulates SESN2 through the Eif2ak4/eIF2α/Atf4 transcriptional axis. SESN2 then promotes translocation of cytosolic Parkin and SQSTM1 to defective mitochondria using two functional domains required for interacting with Parkin and SQSTM1, respectively. SQSTM1 translocation to mitochondria is Parkin-dependent. SESN2-mediated cytosolic Parkin-SQSTM1 interaction is PINK1-independent, while mitochondrial translocation requires PINK1. |
siRNA/gene silencing, domain mutagenesis, co-immunoprecipitation, Sesn2-/- mice (intervertebral disc degeneration model), mitophagy assays |
International journal of biological sciences |
High |
36632468
|
| 2023 |
p53-regulated SESN2 suppresses STAT3 activity by downregulating the PTPRD phosphatase (responsible for STAT3 dephosphorylation), thereby regulating cell proliferation and death via an mTORC1-independent mechanism. SESN1&2 inactivation in A549 cells accelerates proliferation and confers drug resistance without affecting mTORC1, but stimulates STAT3. |
SESN1&2 double inactivation in A549 cells, STAT3 phosphorylation assays, PTPRD expression analysis, cell proliferation and death assays |
Cell communication and signaling |
Medium |
39985075
|
| 2023 |
Melatonin-induced SESN2 inhibits hepatic gluconeogenesis via a SESN2-SHP signaling cascade that competes with BTG2 and inhibits CREBH-mediated gluconeogenic gene transcription, suppressing the CRBN-BTG2-CREBH signaling axis. |
Sesn2 and Shp silencing mice, primary hepatocytes, gene expression analysis, rescue experiments |
Experimental & molecular medicine |
Medium |
37488285
|
| 2023 |
FTO demethylase reduces m6A methylation of SESN2 mRNA, decreasing its stability. FTO deficiency promotes binding of IGF2BP1 to SESN2 mRNA at exon 9 m6A modification sites, enhancing SESN2 mRNA stability and elevating SESN2 protein expression, which activates AMPK-mTOR-dependent autophagy in NSCLC cells. |
m6A methylated RNA immunoprecipitation sequencing (MeRIP-seq), RNA stability assays, IGF2BP1 RIP, site-specific m6A mapping, SESN2 knockdown |
Heliyon |
Medium |
38495179
|
| 2024 |
SETDB1 histone methyltransferase collaborates with heterochromatin protein HP1β to deposit H3K9me3 on the SESN2 promoter, thereby repressing SESN2 expression. SESN2 mediates SETDB1's regulation of mitochondrial damage and oxidative stress in renal ischemia-reperfusion injury. |
ChIP (H3K9me3 at SESN2 promoter), co-immunoprecipitation (SETDB1-HP1β), SETDB1 knockdown and pharmacological inhibition, in vivo and in vitro I/R models |
BMC biology |
High |
39443993
|
| 2024 |
SESN2 promotes the interaction between SESN2 and RPN2 (ribophorin II) in response to leucine binding. RPN2 overexpression activates the GSK3β/β-catenin pathway (increasing nuclear β-catenin), whereas RPN2 knockdown combined with leucine rescues GSK3β phosphorylation effects, supporting SESN2-mediated promotion of C2C12 myoblast differentiation via the GSK3β/β-catenin pathway. |
Co-immunoprecipitation (SESN2-RPN2 interaction), RPN2 overexpression and knockdown, RNA sequencing, Western blot, β-catenin nuclear translocation assays, in vivo muscle injury model |
Journal of the science of food and agriculture |
Medium |
38551359
|
| 2024 |
SESN2 knockdown in brain tissue increases mTOR/HIF-1α pathway activity and enhances glycolysis (increased HK2, PFKM, PKM1, PKM2, GLUT1, and lactate levels), worsening cerebral ischemia-reperfusion injury. mTOR inhibition with rapamycin reverses these effects, demonstrating that SESN2 regulates glycolysis via mTOR/HIF-1α. |
Lentiviral SESN2 shRNA knockdown, MCAO mouse model, rapamycin rescue, Western blot, immunofluorescence, lactate assay |
CNS neuroscience & therapeutics |
Medium |
40032632
|
| 2025 |
KSHV-encoded vCyclin (a Cyclin D homolog) directly interacts with SESN2 and recruits the deubiquitinase OTUB1, blocking SESN2 polyubiquitination and proteasomal degradation, thereby stabilizing and upregulating SESN2. vCyclin lysine at residue 74 is crucial for cytosolic localization, OTUB1 recruitment, and SESN2 upregulation. Stabilized SESN2 activates AMPK to support survival of KSHV-driven primary effusion lymphoma cells. |
Co-immunoprecipitation (vCyclin-SESN2-OTUB1 complex), site-directed mutagenesis (K74 of vCyclin), ubiquitination assays, AMPK activity assays, cell survival assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
41196342
|
| 2025 |
SESN2 directly binds AKT1 and promotes its phosphorylation at Ser473, which activates NRF2 nuclear localization to inhibit ferroptosis. Hepatocyte-specific AAV-mediated SESN2 knockdown abolishes the hepatoprotective effects of Yakuchinone A, establishing SESN2 as its primary pharmacological target in hepatic ischemia-reperfusion injury. |
AAV-mediated hepatocyte-specific overexpression/knockdown in vivo, co-immunoprecipitation (SESN2-AKT1), AKT1 phosphorylation assays, NRF2 nuclear translocation, rescue-of-function experiments |
International immunopharmacology |
Medium |
42105713
|
| 2025 |
SESN2 interacts with SCAP (SREBP cleavage-activating protein) to deactivate SREBP1-mediated transcription of lipogenic enzymes in chondrocytes, and overexpression of Sesn2 in mice prevents obesity-related cartilage lipogenesis and OA progression. |
Co-immunoprecipitation (SESN2-SCAP), SREBP1 target gene assays, AAV-mediated Sesn2 overexpression in DMM mouse model, Western blot, histology |
iScience |
Medium |
40822351
|
| 2025 |
SESN2 deficiency reduces PRDX6 K209 lactylation, a modification required for PRDX6-mediated redox homeostasis; quantitative co-immunoprecipitation showed PRDX6 interacts with GPX4, and this interaction is markedly weakened by K209R mutation. Re-expression of wild-type PRDX6 but not K209R mutant rescues SESN2 deficiency-induced oxidative stress and ferroptosis in granulosa cells. |
Quantitative co-immunoprecipitation, site-directed mutagenesis (K209R), lactylation analysis, SESN2 deficiency models (in vitro/in vivo), rescue experiments |
Free radical biology & medicine |
Medium |
41966311
|
| 2023 |
SESN2 overexpression promotes MVB (multivesicular body) degradation by inhibiting Rab-7a ubiquitination, thereby promoting autophagosome-lysosome fusion. Additionally, SESN2 promotes TFEB nuclear translocation via the mTOR pathway to enhance lysosomal function, reducing exosome secretion from BSA-injured tubular cells. |
RNA-seq, IP-MS, Western blot, TFEB nuclear translocation assay, Rab-7a ubiquitination assay, SESN2 overexpression in HK2 cells |
International journal of biological sciences |
Medium |
40612680
|
| 2018 |
miR-182-5p directly represses SESN2 expression by targeting its 3'-UTR (validated by luciferase reporter and RNP-IP), and ATO-mediated suppression of miR-182-5p leads to stabilization of SESN2 mRNA through AGO2-dependent gene silencing relief. |
Luciferase reporter assay (SESN2 3'UTR), ribonucleoprotein immunoprecipitation (RNP-IP/AGO2), miR-182-5p mimic transfection, mRNA stability assays |
Oncotarget |
Medium |
29662624
|