2000
DOI: 10.1172/jci8551
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CaM kinase signaling induces cardiac hypertrophy and activates the MEF2 transcription factor in vivo

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Cited by 463 publications
(409 citation statements)
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“…Hypertrophic Signaling Dissociates the HDAC4⅐SRF Complex-Ca 2ϩ /CaMK-signaling is known to play an important role in transcription regulation of a large number of cardiac genes as well as in the induction and progression of hypertrophy (46). Given the role of SRF in the activation of cardiac muscle gene expression during hypertrophy, it was not surprising that association of SRF with a repressor, HDAC4, was regulated by Ca 2ϩ /CaMK signaling.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Hypertrophic Signaling Dissociates the HDAC4⅐SRF Complex-Ca 2ϩ /CaMK-signaling is known to play an important role in transcription regulation of a large number of cardiac genes as well as in the induction and progression of hypertrophy (46). Given the role of SRF in the activation of cardiac muscle gene expression during hypertrophy, it was not surprising that association of SRF with a repressor, HDAC4, was regulated by Ca 2ϩ /CaMK signaling.…”
Section: Discussionmentioning
confidence: 99%
“…Both SRF and HDAC4 have been previously shown to be substrates for CaMK-dependent phosphorylation (44,45). It has also been documented that CaMK signaling induces hypertrophy in cultured cardiac myocytes as well as in transgenic mice overexpressing a constitutively active form of CaMK-IV (46). To test whether CaMK-dependent phosphorylation of SRF and/or HDAC4 affects their binding abilities, we subjected both proteins to in vitro phosphorylation.…”
Section: Figmentioning
confidence: 99%
“…On the other hand, FN induced calmodulin 1 (Supplemental Table S1), which activates calcineurin in response to elevated intracellular Ca 2ϩ levels. FN also induced the calcineurin binding protein myozenin 2 (calsarcin-1), which tethers calcineurin to the Z-line of sarcomeres (18), calcium/calmodulin-dependent protein kinase I, which synergizes with calcineurin in promoting hypertrophy (43), and frequenin homolog, which can substitute for calmodulin and regulate cardiac Ito K ϩ channels (38). It is possible that FN induces a permissive state for calcineurin activation but is insufficient for the full induction of calcineurin, which may require increased intracellular Ca 2ϩ levels induced by mechanical stretch or adrenergic agonists.…”
Section: Fibronectin-induced Cardiomyocyte Hypertrophymentioning
confidence: 99%
“…One of the factors whose genetic ablation causes morphological and transcriptional abnormalities during early cardiogenesis is MEF2C. It is a member of the small MEF2 family of MADS-box containing transcription factors that have been implicated in several fundamental processes including myogenesis, fibertype specification, cardiac hypertrophy, atherosclerosis, and as both an activator and inhibitor of apoptosis (Molkentin et al, 1995;Woronicz et al, 1995;Firulli et al, 1996;Kolodziejczyk et al, 1999;Mao et al, 1999;Youn et al, 1999;Okamoto et al, 2000;Passier et al, 2000;Wu et al, 2000;Dunn et al, 2001;Yan et al, 2001). Deletion of the mef2c gene results in a heart with a small, nonlooping LV, loss of the RV, no trabeculation, and decreased expression of several cardiac-specific genes (Lin et al, , 1998Bi et al, 1999;Bruneau et al, 2000;Liu et al, 2001).…”
Section: Introductionmentioning
confidence: 99%