RHPS4 Struktur

RHPS4

Bezeichnung:RHPS4

CAS-Nr390362-78-4

Englisch Name:RHPS4

CBNumberCB23159460

SummenformelC23H20F2N2O4S

Molgewicht458.4777064

MOL-Datei390362-78-4.mol

RHPS4 physikalisch-chemischer Eigenschaften

Schmelzpunkt	256-258 °C
storage temp.	Store at -20°C
Löslichkeit	insoluble in EtOH; ≥10.54 mg/mL in DMSO; ≥2.51 mg/mL in H2O with ultrasonic
Aggregatzustand	solid
Farbe	Brown to reddish brown

RHPS4 Chemische Eigenschaften,Einsatz,Produktion Methoden

Verwenden
3,11-Difluoro-6,8,13-trimethyl-8H-quino[4,3,2-kl]acridinium Methyl Sulfate is a G-quadruplex-stabilizing telomerase inhibitor (1). Telomerase inhibitors has been implicated as potential cancer specific therapy to disrupt DNA stability in tumor cells(2). Inhibiting telomerase activity can shorten telomere length, which may result in senescence or apoptosis.
Biologische Aktivität
rhps4 is a telomerase inhibitor.the protection of chromosome termini, degradation and recombination is regulated by the telomeres. a recent model proposes that telomeres can form a cap at the chromosome end. thus, the telomere cap integrity should be intact to allow cell division to proceed.
in vitro
it was found that the treatment rhps4 to uxf1138l cells led to the displacement of the telomerase catalytic subunit (htert) from the nucleus, induction of telomere-initiated dna-damage signalling as well as chromosome fusions. it was further reported that rhps4 was more potent over cancer cells growing as colonies than cells growing as monolayers. in addition, the forming units of human cord blood and hek293t embryonic kidney cell colony were more resistant to rhps4 [1].
in vivo
animal study found that, compared with controls, rhps4-treated uxf1138l xenografts had a decreased clonogenicity, loss of nuclear htert expression and an induction of mitotic abnormalities. though rhps4 alone showed limited in vivo efficacy, a combination treatment with the mitotic spindle poison taxol resulted in tumour remissions and further enhancement of telomere dysfunction [1].
IC 50
~3 μm for m14 cells in 5-day growth inhibition assay
Lager
Store at +4°C
Einzelnachweise
[1] phatak p, cookson jc,dai f,smith v,gartenhaus rb,stevens mf,burger am. telomere uncapping by the g-quadruplex ligand rhps4 inhibits clonogenic tumour cell growth in vitro and in vivo consistent with a cancer stem cell targeting mechanism. br j cancer.2007 apr 23;96(8):1223-33.

RHPS4 Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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