Exponentially growing cells (HN12, HN30, and HaCaT) are lysed, and 500 μg of total cellular protein are used to immunoprecipitate active cdc2 and cdk2 complexes. After capturing with gammabind G Sepharose and subsequent washes, the active immune complexes are assessed for activity in the presence of increasing concentrations of Perifosine (0.1-30 μM) or flavopiridol (300 nM) in the kinase assay buffer containing [γ-³²P]ATP (3000 Ci/mmol) and 0.2 mg/mL histone H1, 25 μM ATP. Reactions are incubated at 37°C for 30 min and terminated by the addition of SDS-gel loading buffer, resolved in SDS-PAGE, and dried gels are subjected to autoradiography and phosphorimaging^[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell proliferation studies by measuring the uptake of [³H]thymidine is performed. Briefly, HNSCC and HaCaT cells (1-2×10⁴/well) are grown overnight in 24-well plates and exposed to either Perifosine (0.1-30 μM) or PBS (control). After treatment (24-48 h), cells are pulsed with [³H]thymidine (1 μCi/well) for 4-6 h, fixed (5% trichloroacetic acid), and solubilized (0.5 M NaOH) before scintillation counting. Experiments are performed in triplicates^[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Mice^[1]
Drug treatment of tumor-bearing mice. Image-positive Ef-luc Ntv-a mice are treated daily with i.p. administration of buffer alone as a control, or i.p. administration of 100 mg/kg Temozolomide, or oral administration of 30 mg/kg Perifosine, or a combination with Perifosine and Temozolomide for 3 to 5 days. The mean doses of the treatments are: Control, 5 (all five); Temozolomide, 3.75 (three to five); Perifosine, 3.75 (three to four); and Perifosine+Temozolomide, 3 (all three). Control buffer solution consisted of 5% DMSO and 1% Tween 80 in distilled water.
Rats^[3]
To further determine whether the paradoxical effect of rapamycin on S6 phosphorylation is related to upstream signals of Akt-mTOR, rats are treated with Perifosine (20 mg/kg, ip, once), an Akt inhibitor, 30 min before rapamycin administration. Rats are sacrificed 1 h or 6 h after rapamycin injection.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Momota H, et al. Perifosine inhibits multiple signaling pathways in glial progenitors and cooperates with temozolomide to arrest cell proliferation in gliomas in vivo. Cancer Res, 2005, 65(16), 7429-7435.  [Content Brief]

  [2]. Vyomesh Patel, et al. Perifosine, a novel alkylphospholipid, induces p21(WAF1) expression in squamous carcinoma cells through a p53-independent pathway, leading to loss in cyclin-dependent kinase activity and cell cycle arrest. Cancer Res, 2002, 62(5), 14  [Content Brief]

  [3]. Chen L, et al. Rapamycin has paradoxical effects on S6 phosphorylation in rats with and without seizures. Epilepsia. 2012 Nov;53(11):2026-33.  [Content Brief]