| 2010 |
GSK3β phosphorylates BMAL1 specifically on Ser17 and Thr21, priming it for ubiquitylation and proteasomal degradation. In the absence of GSK3β-mediated phosphorylation, BMAL1 is stabilized. Dopamine D2 receptor signaling via the Akt-GSK3β pathway regulates BMAL1 stability and circadian gene expression amplitude in striatal neurons. |
In vitro phosphorylation assays, site-directed mutagenesis (Ser17/Thr21), ubiquitylation assays, D2 receptor pharmacology in striatal neurons |
PloS one |
High |
20049328
|
| 2014 |
CLOCK:BMAL1 heterodimer functions as a pioneer-like transcription factor: it binds to nucleosomes, promotes rhythmic chromatin opening (including incorporation of histone variant H2A.Z), and enables rhythmic binding of other transcription factors at adjacent sites, thereby driving genome-wide heterogeneous transcriptional output. |
ChIP-seq, ATAC-seq (chromatin accessibility), histone variant profiling, genome-wide binding analysis |
Genes & development |
High |
24395244
|
| 2020 |
BMAL1 functions as a metabolic checkpoint in macrophages: upon M1 inflammatory stimulation, myeloid-specific Bmal1 KO renders macrophages unable to sustain mitochondrial function, enhancing succinate dehydrogenase (SDH)-mediated ROS production and HIF-1α-dependent metabolic reprogramming. This Bmal1-HIF-1α regulatory loop controls macrophage effector functions and tumor microenvironment. |
Myeloid-specific Bmal1 knockout (M-BKO), mitochondrial function assays, ROS measurement, HIF-1α activation assays, SDH inhibitor rescue experiments, tumor burden measurement |
eLife |
High |
32396064
|
| 2025 |
BMAL1 forms a transcriptionally active heterodimer with HIF2A (a non-canonical partner) in a diurnal manner to regulate myocardial hypoxic response. Cryo-EM structure of the BMAL1-HIF2A-DNA complex reveals structural rearrangements within BMAL1 that enable circadian-hypoxia cross-talk. BMAL1 enhances HIF2A transcriptional activity and stabilizes the HIF2A protein. Amphiregulin (AREG) is identified as a rhythmic target of this complex, critical for daytime variations in myocardial injury. |
Cryo-EM structure determination, Co-IP, transcriptional activity assays, HIF2A protein stability assays, ChIP, cardiac ischemia models with time-of-day pharmacological targeting |
Nature |
High |
40269168
|
| 2018 |
The nuclear receptor HNF4A strongly transrepresses the transcriptional activity of the CLOCK:BMAL1 heterodimer and maintains cell-autonomous circadian oscillations in a tissue-specific manner in liver and colon cells. Genome-wide ChIP-seq reveals co-occupancy of HNF4A and CLOCK:BMAL1 at metabolic genes, defining a feedback loop in tissue-specific oscillators. |
Luciferase transcriptional activity assays, ChIP-seq (genome-wide co-occupancy), siRNA knockdown of HNF4A in liver and colon cells, circadian period measurement |
Proceedings of the National Academy of Sciences of the United States of America |
High |
30530698
|
| 2022 |
BMAL1 plays a transcription-independent role in stabilizing heterochromatin to prevent activation of the LINE1-cGAS-STING pathway. In senescent primate mesenchymal progenitor cells (MPCs), BMAL1 binding to LINE1 loci is decreased, leading to heterochromatin destabilization and aberrant LINE1 transcription, accelerating aging phenotype. |
BMAL1 loss-of-function in human and cynomolgus monkey MPCs, chromatin fractionation, ChIP for BMAL1 at LINE1, cGAS-STING pathway activation assays, heterochromatin marker analysis in BMAL1-deficient monkey tissues |
Nucleic acids research |
High |
35286396
|
| 2015 |
BMAL1 in chondrocytes directs circadian expression of catabolic, anabolic, and apoptotic genes critical for cartilage homeostasis. Loss of chondrocyte BMAL1 reduces phosphorylated SMAD2/3 and NFATC2, decreases expression of Sox9, Acan, and Col2a1, and increases p-SMAD1/5 levels, causing progressive cartilage degeneration. |
Chondrocyte-specific Bmal1 knockout mice, RNA-seq, western blot for SMAD2/3 and SMAD1/5 phosphorylation, histological cartilage assessment |
The Journal of clinical investigation |
High |
26657859
|
| 2020 |
BMAL1 regulates macrophage actin cytoskeletal organization, motility, and phagocytosis via a RhoA-dependent mechanism. BMAL1-/- macrophages show reduced phosphocofilin, increased active RhoA, altered cell morphology and increased motility. BMAL1 controls a network of 148 cell movement genes within 100 kb of high-confidence BMAL1 binding sites, including 29 genes impacting RhoA expression or activation. RhoA inhibition restores phagocytic phenotype. |
Bmal1-/- macrophage characterization, phosphoproteomics, RhoA activity assay, phagocytosis assay in vivo and in vitro, RhoA inhibitor rescue, BMAL1 ChIP-seq for binding sites near cytoskeletal genes |
Proceedings of the National Academy of Sciences of the United States of America |
High |
31900362
|
| 2023 |
BMAL1 rhythmically localizes to hippocampal synapses in a manner dependent on its phosphorylation at Ser42 (pBMAL1-S42). Synaptic pBMAL1(S42) regulates autophosphorylation of CaMKIIα and circadian rhythms of CaMKIIα-dependent molecular interactions and LTP, but not global rest/activity behavior. |
Immunofluorescence/subcellular fractionation of synaptic BMAL1, phospho-specific antibodies, electrophysiology (LTP), CaMKIIα autophosphorylation assays, Ser42 phosphorylation-state analysis |
Science advances |
High |
37878694
|
| 2018 |
P2-HNF4α (an alternative isoform induced in hepatocellular carcinoma) represses BMAL1 (ARNTL) expression and causes nuclear-to-cytoplasmic re-localization of P1-HNF4α. Forced BMAL1 expression in HNF4α-positive HCC prevents tumor growth in vivo. |
Promoter reporter assays, immunofluorescence for BMAL1 localization, forced BMAL1 expression in HCC xenografts, isoform-specific expression analysis |
Nature communications |
Medium |
30341289
|
| 2020 |
Necdin stabilizes BMAL1 protein through SGT1-HSP90 chaperone machinery. Necdin interacts with BMAL1 (N-terminal fragment) and SGT1 (C-terminal fragment) as identified by yeast two-hybrid screening. Depletion of necdin or SGT1/HSP90 leads to BMAL1 degradation via the ubiquitin-proteasome system, altering clock gene expression and circadian rhythms. |
Yeast two-hybrid screening, Co-IP, domain mapping (N- and C-terminal fragments), HSP90 inhibitor treatment, proteasome inhibitor rescue, necdin-KO mouse behavioral and gene expression analysis |
Nucleic acids research |
High |
32667666
|
| 2014 |
BMAL1 deficiency leads to increased mTORC1 activity both in vivo and in cell culture. mTORC1 inhibition with rapamycin increases lifespan of Bmal1-/- mice by 50%, placing BMAL1 as a negative regulator of mTORC1 signaling upstream of aging control. |
Bmal1-/- mice, mTORC1 activity assays (S6K phosphorylation), rapamycin treatment, lifespan measurement |
Aging |
Medium |
24481314
|
| 2022 |
The RRE-mediated feedback regulation of Bmal1 (rhythmic transcription driven by REV-ERB/ROR elements) underpins the E-box-mediated core oscillation. Deletion of RRE elements in mutant mice produced apparently normal rhythms but made circadian period and amplitude more susceptible to disturbance of CRY1 protein rhythm, demonstrating that rhythmic Bmal1 transcription confers perturbation resistance to the clock. |
CRISPR deletion of RRE elements in cells and mice, circadian period/amplitude measurements, mathematical modeling, CRY1 protein manipulation |
Nature communications |
High |
35999195
|
| 2019 |
BMAL1 coordinates circadian MRP2 expression in the intestine by directly activating transcription of Dbp and Rev-erbα through E-box elements in their promoters, which in turn regulate Mrp2 via a D-box element. BMAL1 also negatively regulates E4BP4 (a Mrp2 repressor) via Rev-erbα, generating diurnal Mrp2 expression and time-dependent drug pharmacokinetics. |
Intestine-specific Bmal1 KO mice, qPCR, western blot, luciferase reporter assays, EMSA, ChIP assays for E-box binding, intestinal perfusion and pharmacokinetic experiments |
Theranostics |
High |
31244920
|
| 2019 |
BMAL1 regulates circadian Cyp3a11 expression by directly activating Hnf4α and Dbp transcription via E-box elements. Cellular regulation of Cyp3a11 by BMAL1 is Dbp- and HNF4α-dependent, as Dbp activates and Hnf4α activates Cyp3a11 transcription via a D-box and DR1 element respectively in the Cyp3a11 promoter. |
Bmal1-deficient mice, luciferase reporter, ChIP, promoter mutation analysis, Dbp/Hnf4α overexpression/knockdown, drug toxicity assays |
Communications biology |
High |
31633069
|
| 2018 |
BMAL1 activates Sult1a1 transcription by directly binding an E-box element (-571 to -554 bp) in the Sult1a1 promoter, controlling circadian expression and activity of the sulfotransferase enzyme. |
Bmal1-deficient mice, luciferase reporter assay, EMSA, ChIP assay, serum-shocked cell circadian model |
Drug metabolism and disposition |
Medium |
30064996
|
| 2018 |
CLOCK and BMAL1 cooperate to upregulate RHOA expression by inhibiting CUL3-mediated ubiquitination, and activate RHOA by reducing its interaction with RhoGDI. Consequently, CLOCK:BMAL1 controls the RHOA-ROCK-cofilin pathway, altering F-actin/G-actin dynamics and promoting cancer cell proliferation, migration, and invasion. |
Co-IP for RHOA-RhoGDI and CUL3 interactions, ubiquitination assay, F-actin/G-actin ratio measurement, CLOCK/BMAL1 overexpression and knockdown in cancer cells, cell migration and invasion assays |
Experimental & molecular medicine |
Medium |
30287810
|
| 2016 |
Hepatic BMAL1 controls lipoprotein production and biliary cholesterol excretion by regulating expression of Mtp and Abcg5/Abcg8 via Shp and Gata4. BMAL1 deficiency reduces SHP (increasing MTP and lipoprotein secretion) and reduces GATA4 (diminishing ABCG5/8 expression and biliary cholesterol excretion). Forced SHP or GATA4 expression rescues respective phenotypes. |
Global and liver-specific Bmal1 KO mice on ApoE-/- and Ldlr-/- backgrounds, forced expression of SHP and GATA4, lipoprotein secretion assays, biliary cholesterol measurement, western blot/qPCR |
Nature communications |
High |
27721414
|
| 2021 |
BMAL1 directly transactivates the Dgat2 gene (encoding triacylglycerol synthesis enzyme DGAT2) via direct binding to an E-box in the promoter, promoting dietary fat absorption. Intestinal Bmal1 deficiency impairs lipid resynthesis and reduces fat secretion; Rev-erbα deficiency (enhancing BMAL1 activity) exacerbates this. |
Intestine-specific Bmal1 KO mice, ChIP assay for E-box binding in Dgat2 promoter, luciferase reporter, lipid absorption assays, Rev-erbα intestinal KO |
Nature communications |
High |
34493722
|
| 2022 |
S6K1 phosphorylates BMAL1 at serine 42, causing its dissociation from the Adipoq promoter. This leads to EZH2 recruitment and H3K27me3 modification of the Adipoq promoter, suppressing adiponectin expression. Fasting inactivates S6K1, triggering an EZH2-to-BMAL1 transcriptional switch that promotes adiponectin expression. |
S6K1 kinase assay, ChIP for BMAL1 and EZH2/H3K27me3 at Adipoq promoter, S6K1 KO mice, phospho-Ser42 BMAL1 detection, promoter reporter assays |
Experimental & molecular medicine |
High |
35338256
|
| 2023 |
Astrocyte-specific BMAL1 deletion induces Bag3 expression, a chaperone critical for macroautophagy, enhancing astrocyte phagocytosis of alpha-synuclein and tau in a BAG3-dependent manner. Astrocyte Bag3 overexpression is sufficient to mitigate alpha-synuclein spreading in vivo, placing BMAL1 upstream of BAG3-mediated protein clearance. |
Astrocyte-specific Bmal1 KO, Bag3 KO rescue experiments, Bag3 overexpression in vivo, phagocytosis assays for alpha-synuclein and tau, tauopathy and alpha-synucleinopathy mouse models |
Neuron |
High |
37315555
|
| 2023 |
BMAL1 deletion in astrocytes influences endolysosomal function, autophagy, and protein degradation dynamics in a cell-autonomous manner. Bmal1-deficient astrocytes exhibit increased endocytosis, lysosome-dependent protein cleavage, and accumulation of LAMP1- and RAB7-positive organelles in vitro; astrocyte-specific Bmal1 KO brains show accumulation of autophagosome-like structures in vivo by electron microscopy. Transcriptional dysregulation of lysosome function pathways occurs independently of TFEB activation. |
Astrocyte-specific Bmal1 KO, electron microscopy, LAMP1/RAB7 immunostaining, endocytosis assays, lysosomal protease activity, RNA-seq of isolated astrocytes |
Proceedings of the National Academy of Sciences of the United States of America |
High |
37155839
|
| 2018 |
BMAL1 cell-autonomously regulates astrocyte activation (astrogliosis) and inflammatory gene expression. Astrocyte-specific Bmal1 deletion induces astrocyte activation in vitro and in vivo, mediated in part by suppression of glutathione-S-transferase signaling. Loss of astrocyte BMAL1 promotes neuronal death in vitro. |
Astrocyte-specific Bmal1 KO (in vitro and in vivo), inflammatory gene expression profiling, glutathione-S-transferase pathway analysis, neuronal co-culture death assay |
Cell reports |
High |
30282019
|
| 2017 |
BMAL1 expression in skeletal muscle is both necessary and sufficient to regulate total sleep amount. Restoring Bmal1 only in skeletal muscle of Bmal1-KO mice rescued sleep-amount phenotypes; muscle-specific Bmal1 KO reproduced them. Overexpression of skeletal-muscle Bmal1 reduced the recovery response to sleep loss. |
Brain-specific and muscle-specific Bmal1 rescue in global KO mice, muscle-specific Bmal1 KO, polysomnographic sleep recording |
eLife |
High |
28726633
|
| 2023 |
Bmal1 inhibits axon regeneration of dorsal root ganglia neurons by acting as a gatekeeper of neuroepigenetic responses to axonal injury, limiting Tet3 expression and restricting 5-hydroxymethylcytosine (5hmC) modifications at regeneration-associated genes. Conditional neuronal Bmal1 deletion enhances axon regeneration in vitro and in vivo. Diurnal oscillation of Tet3 and 5hmC in DRG neurons corresponds to time-of-day effect on axon growth potential. |
Neuron-specific conditional Bmal1 KO, in vitro and in vivo neurite outgrowth assays, ChIP for 5hmC, RNA-seq, Tet3 expression analysis |
Nature communications |
High |
37620297
|
| 2019 |
BMAL1 directly binds the MITF promoter and transcriptionally regulates its expression, which positively influences melanin synthesis. BMAL1 overexpression increases MITF and melanin levels in human melanocytes/melanoma cells and protects against UVB-induced DNA damage. |
ChIP for BMAL1 at MITF promoter, luciferase reporter assay, BMAL1 overexpression/knockdown, melanin quantification, UVB treatment |
Pigment cell & melanoma research |
Medium |
34160901
|
| 2024 |
BMAL1 directly regulates neuronal survival in dopaminergic (TH+) neurons of the substantia nigra pars compacta in a cell-autonomous manner. Pan-neuronal or TH neuron-specific Bmal1 deletion caused spontaneous TH+ neuron loss. Transcriptomics revealed dysregulation of oxidative phosphorylation and Parkinson disease pathways. |
Cell-type-specific Cre-lox Bmal1 KO (pan-neuronal, TH-specific, astrocyte, microglia), stereological TH+ neuron counting, RNA-seq |
JCI insight |
High |
38032732
|
| 2021 |
BMAL1 transcriptionally regulates Rab27a (a key exosome secretion gene) via luciferase assay, promoting exosome release from colorectal cancer cells and facilitating cancer cell migration. |
Luciferase reporter assay for Rab27a promoter, BMAL1 overexpression/knockdown, exosome isolation and quantification, migration assays |
Molecular biology reports |
Medium |
34727291
|
| 2022 |
Polyamines stimulate BMAL1 and REV-ERBα protein synthesis at the translational level through enhancement of ribosomal shunting within the 5'-UTR of their mRNAs. In polyamine-reduced cells, BMAL1 synthesis is reduced and circadian period is lengthened. |
EGFP fusion reporter with wild-type or mutated 5'-UTR of Bmal1 mRNA, polyamine depletion experiments, circadian period measurement in NIH3T3 cells |
International journal of molecular sciences |
Medium |
33525630
|
| 2019 |
BMAL1 (ARNTL) associates with telomere DNA in a rhythmic/diurnal fashion in zebrafish and mice, and controls a circadian rhythm in TERRA (Telomeric Repeat-containing RNA). BMAL1-dependent H3K9me3 rhythm at telomeres is lost in aged animals, linking BMAL1 to telomere heterochromatin maintenance. |
ChIP for BMAL1 at telomere DNA, TERRA RT-qPCR in Bmal1-/- mouse liver, H3K9me3 ChIP at telomeres in zebrafish and mice, aging comparison |
PloS one |
Medium |
31634367
|
| 2021 |
BMAL1 dephosphorylation by protein phosphatase 4 (PPP4) participates in modulating circadian timing and determines the pace of the circadian clock (as reviewed based on findings by Klemz et al.). |
Biochemical/genetic analysis of PPP4-mediated BMAL1 dephosphorylation (referenced in review/perspective based on original research) |
Genes & development |
Low |
34341001
|
| 2025 |
A small molecule (CCM) targeting the PASB domain cavity of BMAL1 causes expansion of the cavity, conformational changes in the PASB domain, and alters BMAL1 function as a transcription factor. CCM induces dose-dependent alterations in PER2-Luc oscillations and downregulates inflammatory and phagocytic pathways in macrophages. Crystal/structural and biochemical studies validate selectivity. |
Small molecule design, structural studies (BMAL1 PASB domain), biochemical binding assays, PER2-Luc reporter assay, macrophage inflammatory assays |
Nature chemical biology |
High |
40133642
|
| 2020 |
BMAL1 directly interacts with NF-κB p65 (RelA) subunit in theca cells and negatively regulates PI3K/NF-κB signaling, thereby controlling steroidogenesis-associated gene expression including Lhcgr, Hsd3β2, and Cyp17a1. |
Co-IP for BMAL1-RelA interaction, PI3K inhibitor rescue, siRNA-mediated Bmal1 knockdown in granulosa and theca cells, Bmal1 KO mice, hormone measurement |
Reproduction |
Medium |
33112769
|
| 2019 |
BMAL1 (ARNTL) acts as a transcription factor that suppresses NPC cell proliferation and enhances cisplatin sensitivity by directly binding the CDK5 promoter and activating CDK5 transcription, as validated by dual luciferase reporter and ChIP assays. CDK5 overexpression reverses the suppressive effects of BMAL1. |
Dual luciferase reporter assay for CDK5 promoter, ChIP assay, ARNTL overexpression and CDK5 overexpression epistasis experiment, proliferation and cisplatin sensitivity assays |
Journal of experimental & clinical cancer research |
Medium |
30621723
|
| 2022 |
BMAL1 promotes OPC (oligodendrocyte precursor cell) proliferation in a time-of-day-dependent manner. OPC-specific Bmal1 KO disrupts circadian gene expression, proliferation, density, morphology, and migration, leading to thinner myelin and sleep fragmentation. In adults, OPC-specific Bmal1 loss impairs remyelination via changes in OPC morphology and migration. |
OPC-specific Bmal1 KO during development and adulthood, RNA-seq, immunostaining, electron microscopy for myelin thickness, demyelination lesion model, sleep recording |
Neuron |
High |
37657440
|
| 2023 |
BMAL1 binds the promoters of CCNA1 and CDK1 genes in endothelial cells (by ChIP-seq) and controls their expression, thereby regulating EC cell cycle progression. EC-specific BMAL1 impairment causes angiogenesis defects in neonatal vascular tissues and adult tumor angiogenesis settings. |
EC-specific Bmal1 KO in vivo, BMAL1 ChIP-seq in ECs, cell cycle analysis, angiogenesis assays (neonatal retina and tumor), RNA-seq |
Cardiovascular research |
High |
37052172
|
| 2024 |
Hepatic BMAL1 and HIF1α cooperate in the circadian response to hypoxia through shared and distinct regulatory roles. HIF1α accumulation upon hypoxia is temporally regulated and Bmal1-dependent. Loss of both hepatic Bmal1 and Hif1α causes hypoxemia, pulmonary vasodilation (via ERK-eNOS-NO), and mortality in a daytime-dependent manner, resembling hepatopulmonary syndrome. |
Liver-specific Bmal1 KO, liver-specific Hif1α KO, double KO, hypoxia exposure at different times of day, transcriptomics, eNOS/NO measurement, ERK activation assays |
Cell metabolism |
High |
39106859
|
| 2018 |
LIN28A directly binds the BMAL1 promoter under H. pylori infection and activates BMAL1 transcription. In turn, BMAL1 functions as a transcription factor to enhance expression of proinflammatory TNF-α, promoting gastric inflammation. |
ChIP assay for LIN28A at BMAL1 promoter, dual luciferase reporter assay, H. pylori infection models in vitro and in vivo |
EBioMedicine |
Medium |
30502053
|
| 2022 |
BMAL1 non-canonically sequesters myosin heavy chain 9 (MYH9) to increase MRTF-SRF activity and AP-1 transcriptional signature, shifting melanoma cells from a Sox10-high to Sox9-high mesenchymal/immune-resistant cell state. This occurs independently of BMAL1's transcriptional activity, as a transcriptionally inactive BMAL1 mutant retains this function. |
Co-IP for BMAL1-MYH9 interaction, BMAL1 transcriptionally inactive mutant expression, MRTF-SRF reporter assays, scRNA-seq cell state analysis, tumor growth assays |
Nature communications |
Medium |
38245503
|
| 2022 |
BMAL1 in cerebellar Purkinje cells (PCs) is required cell-autonomously for normal synaptic transmission and dendritic spine maturation. Bmal1 KO in PCs causes enhanced excitatory and inhibitory synaptic transmission, reduced PC firing, aberrant spine density/morphology, hyperactivated mTORC1 signaling, and autistic-like behaviors. Metformin reversal of mTORC1 hyperactivation rescues behavioral and cellular deficits. |
Global and PC-specific Bmal1 KO, electrophysiology, dendritic spine morphology, mTORC1 activity assays, metformin rescue, behavioral tests |
Molecular psychiatry |
High |
35301425
|
| 2025 |
In skeletal muscle during diet-induced obesity, BMAL1 regulates HIF-driven glycolysis and metabolic flexibility. Muscle-specific BMAL1 deficiency impairs early glycolytic steps and worsens glucose tolerance. Genetic HIF1α stabilization in muscle Bmal1-deficient mice restores glucose tolerance and rescues 217/736 dysregulated genes, establishing BMAL1 upstream of HIF1α in muscle glucose metabolism. |
Muscle-specific Bmal1 KO, metabolite profiling, glucose tolerance tests, HIF1α genetic stabilization rescue, RNA-seq in high-fat diet conditions |
Proceedings of the National Academy of Sciences of the United States of America |
High |
40127275
|
| 2019 |
BMAL1 directly activates Ptch1 and Ihh promoters (binding to their promoter regions), regulating hedgehog signaling in mandibular condylar chondrocytes. BMAL1 deficiency impairs sequential chondrocyte differentiation and endochondral ossification; hedgehog signaling activator rescues the short stature phenotype. |
ChIP for BMAL1 at Ptch1 and Ihh promoters, RNA-seq in Bmal1-/- mandibular condyle, hedgehog activator rescue of BMAL1-deficient phenotype, micro-CT and histology |
Cell proliferation |
Medium |
31747713
|
| 2022 |
PPAR-γ trans-activates Slc1a5 via a response element in its promoter, driving glutamine/methionine uptake in adipocytes. Impaired PPAR-γ in obesity reduces SLC1A5 and glutamine/methionine, decreasing H3K27ac and H3K4me3 at the Bmal1 promoter and disrupting Bmal1 transcription. |
ChIP assay for H3K27ac and H3K4me3 at Bmal1 promoter, luciferase reporter for PPAR-γ/SLC1A5 axis, in vitro and in vivo glutamine/methionine supplementation, qPCR/western blot |
Theranostics |
Medium |
35198059
|
| 2013 |
DNA methylation of the BMAL1 promoter CpG islands silences circadian BMAL1 expression. Treatment with the demethylating agent 5-aza-2'-deoxycytidine recovers BMAL1 expression and circadian oscillation. Reporter gene assays confirm that transcriptional machinery for BMAL1 is active, and methylation (not promoter dysfunction) is the cause of silencing. |
Bisulfite sequencing of BMAL1 promoter CpG islands, 5-aza-dC treatment, luciferase reporter assay, qPCR for circadian oscillation recovery |
Biochemical and biophysical research communications |
Medium |
24103761
|
| 2020 |
BMAL1 promotes mitophagy via SIRT1 to alleviate myocardial injury in sepsis. BMAL1 knockdown inhibits SIRT1 and mitophagy-associated proteins; SIRT1 overexpression partially reverses effects of BMAL1 knockdown, placing BMAL1 upstream of SIRT1 in a pro-mitophagy pathway in cardiomyocytes. |
siRNA/shRNA Bmal1 knockdown and overexpression in H9C2 cells, SIRT1 overexpression rescue, mitophagy protein expression (western blot), apoptosis/ROS by flow cytometry, cecal ligation-puncture in vivo model |
International immunopharmacology |
Medium |
38678672
|
| 2024 |
BMAL1 overexpression reduces YAP transcriptional activity and inhibits the Hippo signaling pathway in renal tubular epithelial cells; ChIP-qPCR identifies YAP as a direct BMAL1 target. YAP positively regulates ACSL4, promoting ferroptosis. Inhibiting YAP (by Verteporfin) reverses BMAL1-downregulation-induced ferroptosis. |
BMAL1 overexpression, ChIP-qPCR for BMAL1 at YAP promoter, Verteporfin rescue, ferroptosis markers, transcriptome sequencing, in vivo sepsis-AKI model |
International immunopharmacology |
Medium |
39303541
|
| 2021 |
BMAL1 (ARNTL) in EPIYA L-cells is required for rhythmic GLP-1 secretion; L-cell-specific Arntl KO reduces GLP-1 secretion at peak time points and impairs time-dependent GLP-1 release. L-cell Arntl disruption also alters intestinal CD4+ intraepithelial lymphocytes, proinflammatory cytokine expression, and colonic microbiome composition. |
Inducible L-cell-specific Arntl KO mice, oral glucose tolerance tests at ZT2 and ZT14, GLP-1 measurement, siRNA knockdown in mGLUTag cells, transcriptomic analysis, microbiome 16S rRNA sequencing |
Molecular metabolism |
Medium |
34520858
|
| 2022 |
Circadian rhythm disruption (by melatonin receptor 1/AMPKβ1 pathway perturbation) impairs endochondral bone formation. Mechanistically, melatonin receptor 1 (MTR1) periodically activates AMPKβ1 phosphorylation, which destabilizes CRY1 and triggers BMAL1 expression, coordinating circadian rhythms of chondrocyte proliferation and matrix synthesis. |
Circadian disruption mouse models, AMPKβ1 agonist rescue, AMPKβ1 phosphorylation assays, CRY1 stability assays, BMAL1 expression analysis, bone formation histology |
Cell death and differentiation |
Medium |
35094018
|
| 2024 |
Circadian disruption causes BMAL1 to suppress MUC4 expression in corneal epithelial cells, contributing to dry eye pathology. BMAL1 silencing reduces MUC4 expression and BMAL1 overexpression increases it in cultured human corneal epithelial cells in vitro. Genetic BMAL1 ablation in mice recapitulates MUC4 deficiency and dry eye disease. |
BMAL1 siRNA and overexpression in human corneal epithelial cells, Bmal1 KO mice, MUC4 protein/mRNA measurement, corneal surface assessment |
Experimental & molecular medicine |
Medium |
38956298
|