Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 312.4 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\32303958
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mol+Biol+Rep
2020 ; 47
(6
): 4631-4650
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
? adrenergic receptor modulated signaling in glioma models: promoting ?
adrenergic receptor-? arrestin scaffold-mediated activation of
extracellular-regulated kinase 1/2 may prove to be a panacea in the treatment of
intracranial and spinal malignancy and extra-neuraxial carcinoma
#MMPMID32303958
Ghali GZ
; Ghali MGZ
Mol Biol Rep
2020[Jun]; 47
(6
): 4631-4650
PMID32303958
show ga
Neoplastically transformed astrocytes express functionally active cell surface ?
adrenergic receptors (?ARs). Treatment of glioma models in vitro and in vivo with
? adrenergic agonists variably amplifies or attenuates cellular proliferation. In
the majority of in vivo models, ? adrenergic agonists generally reduce cellular
proliferation. However, treatment with ? adrenergic agonists consistently reduces
tumor cell invasive potential, angiogenesis, and metastasis. ? adrenergic
agonists induced decreases of invasive potential are chiefly mediated through
reductions in the expression of matrix metalloproteinases types 2 and 9.
Treatment with ? adrenergic agonists also clearly reduce tumoral neoangiogenesis,
which may represent a putatively useful mechanism to adjuvantly amplify the
effects of bevacizumab. Bevacizumab is a monoclonal antibody targeting the
vascular endothelial growth factor receptor. We may accordingly designate
?agonists to represent an enhancer of bevacizumab. The antiangiogenic effects of
? adrenergic agonists may thus effectively render an otherwise borderline
effective therapy to generate significant enhancement in clinical outcomes. ?
adrenergic agonists upregulate expression of the major histocompatibility class
II DR alpha gene, effectively potentiating the immunogenicity of tumor cells to
tumor surveillance mechanisms. Authors have also demonstrated crossmodal
modulation of signaling events downstream from the ? adrenergic cell surface
receptor and microtubular polymerization and depolymerization. Complex effects
and desensitization mechanisms of the ? adrenergic signaling may putatively
represent promising therapeutic targets. Constant stimulation of the ? adrenergic
receptor induces its phosphorylation by ? adrenergic receptor kinase (?ARK),
rendering it a suitable substrate for alternate binding by ? arrestins 1 or 2.
The binding of a ? arrestin to ?ARK phosphorylated ?AR promotes receptor mediated
internalization and downregulation of cell surface receptor and contemporaneously
generates a cell surface scaffold at the ?AR. The scaffold mediated activation of
extracellular regulated kinase 1/2, compared with protein kinase A mediated
activation, preferentially favors cytosolic retention of ERK1/2 and blunting of
nuclear translocation and ensuant pro-transcriptional activity. Thus, ?AR
desensitization and consequent scaffold assembly effectively retains the
cytosolic homeostatic functions of ERK1/2 while inhibiting its pro-proliferative
effects. We suggest these mechanisms specifically will prove quite promising in
developing primary and adjuvant therapies mitigating glioma growth, angiogenesis,
invasive potential, and angiogenesis. We suggest generating compounds and
targeted mutations of the ? adrenergic receptor favoring ? arrestin binding and
scaffold facilitated activation of ERK1/2 may hold potential promise and
therapeutic benefit in adjuvantly treating most or all cancers. We hope our
discussion will generate fruitful research endeavors seeking to exploit these
mechanisms.
|Adrenergic beta-Agonists/metabolism
[MESH]
|Animals
[MESH]
|Carcinoma/genetics/metabolism
[MESH]
|Cell Proliferation
[MESH]
|Glioma/genetics/*metabolism
[MESH]
|Humans
[MESH]
|MAP Kinase Signaling System/physiology
[MESH]
|Mitogen-Activated Protein Kinase 3/metabolism
[MESH]