Rapamycin - CAS 53123-88-9 - Calbiochem (C15-1246-467)

General description

Anti-fungal and immunosuppressant. Selectively inhibits the mammalian target of rapamycin (mTOR) and blocks the subsequent activation of p70 S6 kinase (IC₅₀ = 50 pM). Specifically inhibits mTORC1, but mTORC2 that phosphorylates Akt at Ser⁴⁷³ appears to be insensitive to rapamycin. Prevents the translational activation of IGF-II. Also prevents resting T-cells from entering the cell cycle, but does not directly arrest cell cycle progression. Shown to inhibit later signaling events, such as p110^Rb phosphorylation, p34^cdc2 kinase activation, and cyclin A synthesis. Exhibits strong binding to FK-506 binding proteins. Also reported to induce apoptosis in a murine B-cell line, to inhibit lymphokine-induced cell proliferation at the G₁ phase, and to irreversibly arrest Saccharomyces cerevisiae cells in the G₁ phase. A 5 mM (500 µg/109 µl) solution of Rapamycin (Cat. No. 553211) in DMSO and a 10 mM (1 mg/109 µl) solution of Rapamycin (Cat. No. 553212) in EtOH is also available.

Selectively inhibits the mammalian target of rapamycin (mTOR) and blocks the subsequent activation of p70 S6 kinase (IC₅₀ = 50 pM). Specifically inhibits mTORC1, but mTORC2 that phosphorylates Akt at Ser⁴⁷³ appears to be insensitive to rapamycin. Prevents the translational activation of IGF-II. Also prevents resting T-cells from entering the cell cycle, but does not directly arrest cell cycle progression. Shown to inhibit later signaling events, such as p110^Rb phosphorylation, p34^cdc2 kinase activation, and cyclin A synthesis. Exhibits strong binding to FK-506 binding proteins. Also reported to induce apoptosis in a murine B-cell line, to inhibit lymphokine-induced cell proliferation at the G₁ phase, and to irreversibly arrest Saccharomyces cerevisiae cells in the G₁ phase.

Biochem/physiol Actions

Cell permeable: no

Primary Target
Mammalian target of rapamycin (mTOR)

Product does not compete with ATP.

Reversible: no

Target IC₅₀: 50 pM against p70 S6 kinase

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

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Bierer, B.E., et al. 1990. Proc. Natl. Acad. Sci. USA87, 9231.
Dumont, F.J., et al. 1990. J. Immunol.144, 251.

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