| 2001 |
The β2 adrenergic receptor forms a direct macromolecular signaling complex with Cav1.2, also containing a G protein, adenylyl cyclase, PKA, and PP2A, enabling highly localized and specific signal transduction from receptor to channel in hippocampal neurons. |
Co-immunoprecipitation, electrophysiology in hippocampal neurons |
Science |
High |
11441182
|
| 2004 |
PKC isoforms form a macromolecular complex with the α1c subunit of Cav1.2 via direct interaction with the C-terminus, and phosphorylate Ser1928 both in vitro and in vivo, the same residue phosphorylated by PKA, indicating convergence of PKA and PKC signaling on Cav1.2 at Ser1928. |
In vitro kinase assay, Co-immunoprecipitation, site-directed mutagenesis, metabolic labeling in intact cells |
The Journal of biological chemistry |
High |
15509562
|
| 2003 |
Apocalmodulin (apoCaM) binds with higher affinity to the C-IQ region of Cav1.2 than to the IQ peptide alone; Ca2+-CaM binds all three C-terminal regions (A, C, IQ); binding to IQ and C peptides increases Ca2+ affinity of the C-lobe of CaM; apoCaM binding to the IQ motif is necessary for rapid Ca2+ binding to the C-lobe and subsequent Ca2+-dependent inactivation. Double mutation of IQ motif residues reduces apoCaM interaction. |
Fluorescence binding assays, peptide competition assays, site-directed mutagenesis of IQ motif in channel |
Biophysical journal |
High |
12944271
|
| 2004 |
CaBP1 (Ca2+-binding protein-1) directly interacts with the α1 subunit of Cav1.2 at IQ domain and other CaM-binding sites; IQ binding is Ca2+-dependent and competitive with CaM. CaBP1 co-purifies with Cav1.2 in postsynaptic density fractions from rat brain and colocalizes in neuronal dendrites. CaBP1 prevents Ca2+-dependent inactivation and causes Ca2+-dependent facilitation of Cav1.2 currents, contrasting with CaM's promotion of inactivation. |
Co-immunoprecipitation, postsynaptic density fractionation, double-label immunofluorescence, whole-cell electrophysiology in transfected cells |
The Journal of neuroscience |
High |
15140941
|
| 2005 |
Conditional knockout of Cav1.2 (CACNA1C) in hippocampus and neocortex selectively abolishes protein synthesis-dependent, NMDAR-independent late-phase LTP (L-LTP) at Schaffer collateral/CA1 synapses, impairs hippocampus-dependent spatial memory, and decreases MAPK pathway activation and CRE-dependent transcription in CA1 pyramidal neurons. |
Conditional knockout mouse (Cav1.2 HCKO), electrophysiology (LTP recording), spatial memory behavioral assays, biochemical signaling assays |
The Journal of neuroscience |
High |
16251435
|
| 2007 |
Protein kinase G (PKGIα) phosphorylates specific residues within both the α1c and β2a subunits of Cav1.2 in vitro and in intact HEK cells and cardiac myocytes; PKG-mediated inhibition of Cav1.2 whole-cell current is significantly reduced by alanine substitution of Ser496 on the β2a subunit. |
In vitro kinase assay, phospho-epitope-specific antibodies, whole-cell patch clamp, site-directed mutagenesis |
Circulation research |
High |
17626895
|
| 2009 |
Fox family splicing regulators (Fox1 and Fox2) directly control alternative splicing of CaV1.2 exons 9* and 33 during cortical development: Fox proteins repress exon 9* inclusion and enhance exon 33 inclusion via binding elements in adjacent introns, generating splice variants with distinct electrophysiological properties. |
siRNA knockdown, overexpression of Fox1/Fox2, minigene reporter assays, RT-PCR of endogenous CaV1.2 mRNA in cortical neurons |
Molecular and cellular biology |
High |
19564422
|
| 2009 |
NMDA receptor activation causes internalization and lysosomal degradation of CaV1.2 channels through binding to PIKfyve (phosphatidylinositol 3-phosphate 5-kinase), which generates PtdIns(3,5)P2 and promotes CaV1.2 targeting to lysosomes; PIKfyve knockdown prevents CaV1.2 degradation and increases neuronal susceptibility to excitotoxicity. |
Immunoprecipitation, live imaging, siRNA knockdown, biochemical fractionation, toxicity assays |
The Journal of cell biology |
High |
19841139
|
| 2009 |
α2δ-1 is the sole α2δ isoform in cerebral artery myocytes, is essential for plasma membrane expression of Cav1.2 α1 subunits, and directly regulates CaV1.2 current; α2δ-1 knockdown reduces surface Cav1.2, decreases intracellular Ca2+ concentration, and inhibits pressure-induced vasoconstriction (myogenic tone). |
Surface biotinylation, shRNA knockdown, patch-clamp electrophysiology, pressurized vessel myography, confocal microscopy |
Circulation research |
High |
19797702
|
| 2010 |
CaMKII binding to β2a subunit residue Leu493 and phosphorylation of Thr498 are required for CaV1.2 to enter a high-activity gating mode (mode 2); expression of T498A or L493A β2a mutants reduces Ca2+ entry through Cav1.2, inhibits early afterdepolarizations (EADs), and improves cardiomyocyte survival in CaMKII-overloaded conditions. |
Site-directed mutagenesis, patch-clamp electrophysiology (single-channel and whole-cell), adenoviral overexpression in adult rabbit ventricular myocytes, cell survival assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
20194790
|
| 2010 |
Rem GTPase inhibits Cav1.2 in heart primarily by arresting surface channels in a low open-probability gating mode (not by reducing channel trafficking); this inhibition requires GTP-binding but not membrane targeting, and Rem-inhibited channels cannot be rescued by PKA-dependent phosphorylation but can be rescued by Bay K 8644. |
Patch-clamp electrophysiology (whole-cell and gating charge measurements), overexpression in adult guinea pig cardiomyocytes, dominant-negative and chimeric Rem mutants |
Circulation research |
High |
20616312
|
| 2010 |
Increasing L-type Ca2+ influx through Cav1.2 (via β2a subunit overexpression) is sufficient to induce pathological cardiomyocyte hypertrophy through calcineurin/NFAT and CaMKII/HDAC signaling pathways; both cytosolic and SR/ER-nuclear envelope Ca2+ pools are involved. |
Transgenic mouse models with β2a overexpression, adenoviral overexpression in cultured cardiomyocytes, L-type channel blockade, calcineurin/CaMKII inhibition, NFAT/HDAC translocation assays |
Journal of molecular and cellular cardiology |
High |
21111744
|
| 2010 |
IP3R-mediated SR Ca2+ release elevates mitochondrial [Ca2+], induces mitochondrial ROS generation, which activates NF-κB to stimulate CaV1.2 channel transcription in arterial myocytes, thereby modulating vasoconstriction. |
Mitochondrial Ca2+ imaging, ROS measurements, NF-κB reporter assays, siRNA knockdown, qRT-PCR, patch-clamp, pressurized myography |
Circulation research |
Medium |
20616314
|
| 2011 |
BIN1 (bridging integrator 1) traffics Cav1.2 to cardiac T-tubules; BIN1 is significantly reduced in failing human cardiomyocytes, and this reduction impairs Cav1.2 trafficking to T-tubules, reduces surface Ca2+ current, and impairs calcium transients and contractility. |
Confocal imaging of human failing/non-failing myocytes, T-tubule biochemical fractionation, patch clamp, shRNA knockdown in mouse cardiomyocytes, zebrafish morpholino knockdown |
Heart rhythm |
High |
22138472
|
| 2013 |
Ca2+ influx through CaV1.2 regulates jaw/mandible development by controlling cellular hypertrophy and hyperplasia via the calcineurin signaling pathway in jaw primordium cells; CaV1.2 is expressed in first and second pharyngeal arch cells. |
Gain-of-function and loss-of-function mouse models, zebrafish knockdown/rescue, pharmacological blockade, calcineurin pathway assays |
The Journal of clinical investigation |
High |
23549079
|
| 2013 |
Timothy syndrome (TS) gain-of-function mutation G406R in Cav1.2 acts in a dominant-negative manner in hair follicle stem cells to delay anagen; Cav1.2 regulates production of the BMP inhibitor follistatin-like1 (Fstl1) from the bulge to derepress stem cell quiescence. This occurs in the absence of detectable voltage-dependent Ca2+ currents in these non-excitable cells. |
Transgenic mouse expressing TS-Cav1.2, L-type channel blocker treatment, Fstl1 expression analysis, hair follicle stem cell assays |
Genes & development |
Medium |
23752588
|
| 2014 |
Phosphorylation of Ser1700 on Cav1.2 is essential for maintaining basal L-type Ca2+ current in cardiomyocytes and for the incremental increase by β-adrenergic receptor stimulation (isoproterenol); Ser1700Ala knock-in mice develop cardiac hypertrophy and have reduced stress-induced exercise tolerance. |
Knock-in mouse model (S1700A), patch-clamp electrophysiology in neonatal and adult cardiomyocytes, in vivo cardiac function assays, exercise testing |
Proceedings of the National Academy of Sciences of the United States of America |
High |
25368181
|
| 2016 |
Phosphorylation of Cav1.2 Ser1928 by PKA, within the β2AR binding site (residues 1923-1942), displaces the β2AR from Cav1.2 upon β-adrenergic stimulation, rendering Cav1.2 refractory to further β-adrenergic stimulation for several minutes; this effect is lost in S1928A knock-in mice. Long-term potentiation induced by prolonged theta tetanus requires Cav1.2 and its regulation by channel-associated β2AR. |
S1928A knock-in mice, Co-immunoprecipitation, electrophysiology (patch clamp and LTP recording), β-adrenergic stimulation assays |
The EMBO journal |
High |
27103070
|
| 2016 |
Deletion of cacna1c in the adult mouse prefrontal cortex produces antidepressant-like effects and reduces REDD1 protein levels; REDD1 overexpression in the PFC of cacna1c heterozygous mice reverses the antidepressant-like phenotype and is associated with lower phospho-Akt (S473) and higher nuclear FoxO3a levels. |
Viral vector-mediated conditional knockout, behavioral assays (SPT, FST, TST), molecular signaling assays (REDD1, Akt, FoxO3a) |
Neuropsychopharmacology |
Medium |
27922594
|
| 2016 |
NFAT5 binds to a consensus sequence (TGGAAGCGTTC) in the promoter of Cacna1c and activates its transcription; siRNA-mediated NFAT5 knockdown suppresses Cacna1c expression and decreases L-type Ca2+ current in mouse neonatal cardiomyocytes; morpholino knockdown of nfat5 in zebrafish prevents cacna1c expression and results in non-contractile ventricle, rescued by overexpression of either cacna1c or nfat5. |
Promoter analysis, ChIP/binding assay, siRNA knockdown, patch clamp, zebrafish morpholino knockdown with rescue |
Journal of molecular medicine |
High |
27368804
|
| 2017 |
Increased Ca2+ influx through CaV1.2 in osteoblasts activates osteogenic transcriptional programs, promotes mineralization, and inhibits osteoclast activity through increased osteoprotegerin secretion; CaV1.2 is expressed in proliferating chondrocytes and osteoblasts in developing bone. |
Transgenic gain-of-function CaV1.2 mutant mice (Prx1-, Col2a1-, Col1a1-Cre), BMSC primary cultures, osteoprotegerin assays, ovariectomy bone-loss model |
JCI insight |
Medium |
29202453
|
| 2018 |
Membrane depolarization triggers nuclear signaling (c-Fos and MeCP2 activation via Ras/ERK/CREB pathway) through Cav1.2 in a Ca2+-influx-independent manner; this requires the intracellular β2 subunit's interaction with H-Ras and is dependent on Ca2+ occupancy of the open channel pore but not Ca2+ transport. Loss of α1-β2 interaction (W440A mutation) or absence of β2 abolishes nuclear signaling. |
Mutagenesis (Ca2+-impermeable channel α1L745P, CaM-binding disrupting α1I1624A, α1W440A), pulldown assays with recombinant H-Ras and β2, transfection in HEK293 and SH-SY5Y cells, reporter assays for c-Fos/MeCP2 |
Proceedings of the National Academy of Sciences of the United States of America |
High |
30150369
|
| 2019 |
CaV1.2 β subunits are dispensable for channel trafficking to the sarcolemma in adult cardiomyocytes but are required for β-adrenergic regulation of Cav1.2 and positive inotropy; transgenic α1C lacking the β-subunit binding site traffics normally but cannot be stimulated by isoproterenol. |
Transgenic mouse expressing β-binding-deficient α1C, patch clamp, contractility assays in isolated cardiomyocytes and intact heart, viral β-subunit-sequestering peptide |
The Journal of clinical investigation |
High |
30422117
|
| 2019 |
TDP-43 regulates CaV1.2 expression in pancreatic β cells; TDP-43 loss (nuclear depletion) downregulates CaV1.2 and inhibits exocytosis, reducing early-phase insulin secretion; overexpression of CaV1.2 restores early-phase insulin secretion in Tardbp-knockdown MIN6 cells. |
β cell-specific Tardbp knockout mice, MIN6 cell siRNA knockdown, CaV1.2 overexpression rescue, insulin secretion assays, exocytosis measurements |
The Journal of clinical investigation |
High |
31355778
|
| 2019 |
Estrogen receptor α (ERα) promotes Cav1.2 ubiquitination and proteasomal degradation in neurons via K29-linked ubiquitin chains and the E3 ligase Mdm2, utilizing the PEST sequence in Cav1.2; ERα agonist administration reduces cerebral Cav1.2 protein and increases Cav1.2 ubiquitination in OVX APP/PS1 mice. |
Ubiquitin mutant (K29R), TRABID overexpression, Mdm2 overexpression, MG132 proteasome inhibitor, in vivo ERα agonist (PPT) treatment, immunofluorescence colocalization in vivo |
Aging cell |
Medium |
31012223
|
| 2020 |
Ketamine directly inhibits Cav1.2 calcium channels and blocks Cav1.2-mediated induction of immediate early genes and transcription factors in smooth muscle; Cav1.2-specific inactivation in smooth muscle mimics the ketamine cystitis phenotype, and Cav1.2 agonist Bay K 8644 reverses ketamine-induced smooth muscle dysfunction. |
Patch-clamp electrophysiology, smooth muscle-specific Cav1.2 conditional knockout, pharmacological rescue with Bay K 8644, gene expression assays |
Nature communications |
High |
32859919
|
| 2015 |
Homer proteins mediate the physical interaction between STIM1 and the Cav1.2 α1 subunit; store depletion (thapsigargin) induces co-immunoprecipitation of Homer1 with STIM1 and Cav1.2 α1; disruption of Homer function (PPKKFR peptide or siRNA Homer1) reduces STIM1-Cav1.2 association and enhances nifedipine-sensitive Ca2+ entry through Cav1.2. |
Co-immunoprecipitation, siRNA knockdown of Homer1, dominant-negative PPKKFR peptide, Ca2+ imaging in HEK-293 cells expressing Cav1.2 subunits |
Biochimica et biophysica acta |
Medium |
25712868
|
| 2010 |
Rab25 GTPase co-localizes with Cav1.2 in cerebral artery myocytes and is required for surface expression of Cav1.2 channels; Rab25 knockdown reduces both surface and intracellular Cav1.2 abundance through lysosomal and proteasomal degradation, decreases whole-cell CaV1.2 current, and inhibits pressure-induced vasoconstriction. |
immunoFRET microscopy, surface biotinylation, siRNA knockdown, patch-clamp electrophysiology, pressurized myography |
American journal of physiology. Cell physiology |
Medium |
27076616
|
| 2010 |
α5β1-integrin engagement by fibronectin acutely enhances Cav1.2 current and forms a macromolecular complex with Cav1.2; co-association requires cell adhesion to fibronectin and Cav1.2 C-terminal residues Ser1901, Tyr2122, and two proline-rich domains; phosphorylation at Y2122 and/or S1901 and c-Src binding to PRDs mediate current potentiation. |
Co-immunoprecipitation, site-directed mutagenesis of Cav1.2, patch-clamp electrophysiology, confocal immunofluorescence |
American journal of physiology. Cell physiology |
Medium |
21178109
|
| 2004 |
Smooth muscle-specific knockout of Cav1.2 (SMACKO) abolishes L-type calcium current, protein, and spontaneous contractile activity in the bladder; K+- and carbachol-induced contractions are reduced ~10-fold; Rho-kinase and Ca2+-release pathways cannot compensate for the absence of Cav1.2. CCh-induced contraction requires extracellular Ca2+ but not PLC or intracellular Ca2+ stores. |
Smooth muscle-specific conditional knockout mouse, electrophysiology, contractility assays, pharmacological dissection |
FASEB journal |
High |
15132976
|
| 2009 |
KChIP2 directly interacts with the amino-terminus of CaV1.2 (confirmed by co-immunoprecipitation) and functionally modulates the cardiac L-type Ca2+ current; KChIP2 knockout mice show decreased ICa,L and compensatory transcriptional upregulation of the calcium channel β2 subunit (CACNB2). |
Co-immunoprecipitation, patch-clamp electrophysiology, gene-chip and real-time PCR in KChIP2(-/-) mice |
Channels (Austin, Tex.) |
Medium |
19713767
|
| 2013 |
PKC-dependent activation of Cav1.2 channels selectively controls human TH2 lymphocyte Ca2+ entry and cytokine responses; Cav1.2 is selectively expressed and maintained in TH2 but not TH1 or TH9 cells; both nicardipine and Cav1.2-specific antisense oligonucleotides decrease Ca2+ and cytokine responses in TH2 cells. |
Flow cytometry, antisense oligonucleotide knockdown, PKC inhibition/activation, Ca2+ imaging, cytokine assays in primary human T cells |
The Journal of allergy and clinical immunology |
Medium |
24365142
|
| 2016 |
Forebrain-specific conditional knockout of cacna1c in adult mice improved cognitive flexibility and strengthened synaptic plasticity, while embryonic deletion caused cognitive decline, impaired synaptic plasticity, reduced sociability, hyperactivity, and increased anxiety-like behavior, demonstrating a differential developmental vs adult role for Cav1.2. |
Conditional knockout (embryonic vs. adult timing using inducible Cre), synaptic plasticity recordings, behavioral phenotyping, chronic stress exposure |
Molecular psychiatry |
High |
28696432
|
| 2016 |
Cacna1c deletion specifically in nucleus accumbens neurons increases susceptibility to social defeat stress; reduced Cacna1c expression in nucleus accumbens is causally associated with maladaptive outcomes after chronic social defeat. |
Viral Cre-mediated conditional knockout in nucleus accumbens of floxed Cacna1c mice, social interaction and female urine preference assays |
The international journal of neuropsychopharmacology |
Medium |
28165117
|
| 2016 |
Cacna1c forebrain knockout mice exhibit enhanced death of young hippocampal neurons (without change in NPC proliferation) and deficits in brain BDNF levels; adult hippocampal Cre-mediated knockdown of Cav1.2 recapitulates the survival deficit. |
Forebrain-specific conditional knockout, BrdU/Ki67 labeling, TUNEL/survival assays, BDNF measurement, viral Cre knockdown in adults |
eNeuro |
Medium |
27066530
|
| 2018 |
Cacna1c knockout specifically in serotonin (5-HT) neurons disrupts active-coping behavior in the forced swim test; this is rescued by blocking 5-HT1A receptors; Cacna1c knockout mice show enhanced Fos expression in caudal DR 5-HT neurons and enhanced response to a 5-HT1A antagonist in rostral DR neurons, indicating disrupted 5-HT neuron activation and 5-HT1A feedback inhibition. |
5-HT neuron-specific conditional Cacna1c knockout (temporally controlled), forced swim test, c-Fos immunohistochemistry, pharmacological rescue with WAY-100635 |
Neuropharmacology |
Medium |
30176250
|
| 2015 |
Loss of Cav1.2 in the auditory brainstem (targeted embryonic deletion) causes significant decreases in auditory nuclei volume and cell number; action potentials of lateral superior olive neurons are narrower than controls; the medial nucleus of the trapezoid body undergoes rapid cell loss between P0 and P4. |
Conditional knockout mouse, electrophysiology of auditory brainstem neurons, volumetric and cell-count analysis, auditory brainstem response recordings |
The Journal of biological chemistry |
Medium |
26242732
|
| 2023 |
ANO1, CaV1.2, and IP3R co-assemble in a microdomain at or near the plasma membrane of pulmonary arterial smooth muscle cells (confirmed by co-immunoprecipitation and superresolution nanomicroscopy); this tripartite complex integrates stochastic Ca2+ release events and Ca2+ waves to sustain serotonin-induced arterial contraction. |
Co-immunoprecipitation, confocal and superresolution microscopy, smooth muscle-specific ANO1 ablation, pharmacological blockade of CaV1.2 and IP3R, Ca2+ imaging with GCaMP |
The Journal of general physiology |
Medium |
37702787
|
| 2024 |
In layer III pyramidal cells of dorsolateral prefrontal cortex, Cav1.2 (CACNA1C) is concentrated in dendritic spines near calcium-storing smooth ER, co-expressed with GRIN2B and KCNN3 (SK3); L-type calcium channel activation drives SK3-mediated inhibition of firing; both blockade and excessive activation of L-type channels reduce neuronal firing needed for working memory. |
Electron and light microscopy of macaque dPFC, pharmacological blockade and activation of L-type channels during unit recording, working memory behavioral tasks, transcriptomic profiling of human and macaque pyramidal cells |
JAMA psychiatry |
Medium |
38776078
|
| 1991 |
The human CACNA1C gene (encoding the α1 subunit of the cardiac dihydropyridine-sensitive Ca2+ channel, CCHL1A1) was mapped to chromosome 12p12-pter by PCR analysis of somatic cell hybrids. |
PCR of human-rodent somatic cell hybrids with human-specific oligonucleotides |
Genomics |
Medium |
1653763
|