Ionomycin calcium salt |
| Katalog-Nr.GC15148 |
Lonomycin ist ein selektiver Calcium-Ionophor, der aus S. conglobatus gewonnen wird und intrazelluläre Calciumspeicher mobilisiert.
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Cas No.: 56092-82-1
Sample solution is provided at 25 µL, 10mM.
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Ionomycin calcium salt is a narrow spectrum antibiotic being active against Gram-positive bacteria, which produced by the bacterium Streptomyces conglobatus[1]. Ionomycin calcium salt promotes apoptosis. Ionomycin also induces the activation of protein kinase C (PKC)[2].
In vitro, treatment with 2 µM Ionomycin in LCLC 103H cells results in an instantaneous increase in intracellular Ca2+ concentration from 50 to 180 nM. And in Ionomycin-treated cultures, there is obvious DNA fragmentation and PARP cleavage to an 85-kDa fragment, and necrosis could be detected in ~1-5% of the Ionomycin treated cells[2]. In ras oncogene expressing cells, Ionomycin leads to a dose dependent increase of intracellular calcium activity. At 100 nmol/l ionomycin intracellular calcium is increased from 114 ± 17 nmol/l to 342 ± 24 nmol/l, a value within the range of intracellular calcium concentrations following application of bradykinin[3].
In vivo efficacy test, treatment with 1 µm ionomycin for 6 h, ubiquitination of ENaC-β was robustly enhanced in cells overexpressing wild-type Nedd4-2a[4].
References:
[1] Liu WC, et al. Ionomycin, a new polyether antibiotic. J Antibiot (Tokyo). 1978 Sep;31(9):815-9.
[2] Chatila T, et al. Mechanisms of T cell activation by the calcium ionophore ionomycin. J Immunol. 1989 Aug 15;143(4):1283-9.
[3] WÖll E, et al. The role of calcium in cell shrinkage and intracellular alkalinization by bradykinin in Ha-ras oncogene expressing cells. FEBS Lett. 1993 May 17;322(3):261-5.
[4] Wang J, et al. Calcium activates Nedd4 E3 ubiquitin ligases by releasing the C2 domain-mediated auto-inhibition. J Biol Chem. 2010 Apr 16;285(16):12279-88.
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