Euphohelioscopin A
Euphohelioscopin A, an activator of protein kinase C (PKC), it inhibits proliferation and induces differentiation of the myeloid leukemia cell lines THP-1 and HL-60. Euphohelioscopin A has anti-inflammary activity, it exhibits moderate inhibitory activity on the release of cytokine TNF-α (IC50 = 23.7 ± 1.7 uM), IL-6 (IC50 = 46.1 ± 1.1 uM) and chemokine MCP-1 (IC50 = 33.7 ± 3.8 uM) in lipopolysaccharide (LPS) induced RAW 264.7 macrophages without notable cytotoxicity (IC50 > 80 uM).
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Nat Prod Commun. 2015 Dec;10(12):2037-9.
Macrocyclic Diterpenoids from the Latex of Euphorbia helioscopia.[Pubmed:
26882659]
METHODS AND RESULTS:
One new jatrophane diterpenoid, 7α,9β,15β-triacetoxy-3β-benzoyloxy-14β-hydroxyjatropha-5E,11E-diene (3), together with four known macrocyclic diterpenoids, euphoheliosnoid A (1), epieuphoscopin B (2), Euphohelioscopin A (4) and euphoscopin C (5), were isolated from the stem latex of Euphorbia helioscopia. Their structures were established by spectroscopic analyses.
CONCLUSIONS:
In the anti-inflammatory assay, Euphohelioscopin A (4) exhibited moderate inhibitory activity on the release of cytokine TNF-α (IC50 = 23.7 ± 1.7 μM), IL-6 (IC50 = 46.1 ± 1.1 μM) and chemokine MCP-1 (IC50 = 33.7 ± 3.8 μM) in lipopolysaccharide (LPS) induced RAW 264.7 macrophages without notable cytotoxicity (IC50 > 80 μM).
Chem Biol. 2012 Aug 24;19(8):994-1000.
Euphohelioscopin A is a PKC activator capable of inducing macrophage differentiation.[Pubmed:
22921066 ]
To identify small molecules that selectively control hematopoietic stem cell differentiation, we performed an unbiased screen using primary human CD34(+) cells.
METHODS AND RESULTS:
We identified a plant-derived natural product, Euphohelioscopin A, capable of selectively differentiating CD34(+) cells down the granulocyte/monocytic lineage. Euphohelioscopin A also inhibits proliferation and induces differentiation of the myeloid leukemia cell lines THP-1 and HL-60.
CONCLUSIONS:
Mechanistic studies revealed that Euphohelioscopin A is an activator of protein kinase C (PKC), and that the promonocytic effects of this natural product are mediated by PKC activation. In addition to shedding insights into normal hematopoiesis, this work may ultimately facilitate the application of stem cell therapies to a host of myeloid dysfunctions.
