Varespladib (LY315920)

Catalog No.S1110 Batch:S111003

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Technical Data

Formula

C21H20N2O5
Molecular Weight 380.39 CAS No. 172732-68-2
Solubility (25°C)* In vitro DMSO (warmed with 50ºC water bath) 76 mg/mL (199.79 mM)
Ethanol 1 mg/mL (2.62 mM)
Water Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
5%DMSO 40%PEG300 5%Tween80 50%ddH2O
0.95mg/ml Taking the 1 mL working solution as an example, add 50 μL of 19 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Varespladib (LY315920) is a potent and selective human non-pancreatic secretory phospholipase A2 (hnsPLA) inhibitor with IC50 of 7 nM. Phase 3.
Targets
hnsPLA2 [1]
(Cell-free assay)
7 nM
In vitro LY315920 exhibits the significant inhibitory effect on sPLA2 activity in serum from various species including rat, rabbit, guinea pig and human with IC50 of 8.1 nM, 5.0 nM, 3.2 nM and 6.2 nM, respectively. [2] In BAL cells challenged with human sPLA2, LY315920 at doses ranging from 0.1 μM–3 μM reduces the formation of thromboxane mediated by human sPLA2 in a concentration-dependent manner with an IC50 of approximately 0.8 μM. [2] In human conjunctival epithelial cell line (HCjE), LY315920 (10 μM) significantly inhibits all-trans-retinoic acid (RA) -induced membrane-associated mucin MUC16 expression by 100% at 24 hours and 99% at 48 hours. [3]
In vivo Ex vivo, LY315920 at doses ranging from 3 mg/kg to 30 mg/kg via i.v. inhibits human sPLA2-induced release of thromboxane from guinea pig BAL cells with ED50 of 16.1 mg/kg. [2] In Transgenic Mice Expressing Human sPLA2, both oral and i.v. administration of LY315920 (0.3 mg/kg–3 mg/kg) abolishes serum sPLA2 activity in a dose and time dependent manner. [2]
Features A potent and selective secretory phospholipase A2 inhibitor.

Protocol (from reference)

Animal Study:[2]
  • Animal Models

    Transgenic Mice Expressing Human sPLA2 Protein.

  • Dosages

    ≤3 mg/kg

  • Administration

    Administered via i.v. and p.o.

Customer Product Validation

, , J Am Heart Assoc, 2015, 4:e002553.

, , PLoS One, 2015, 10(4):e0119088.

Data from [Data independently produced by , , Mol Cancer, 2013, 12(1):111.]

Selleck's Varespladib (LY315920) has been cited by 11 publications

Exploring Lysophosphatidylcholine as a Biomarker in Ischemic Stroke: The Plasma-Brain Disjunction [ Int J Mol Sci, 2024, 25(19)10649] PubMed: 39408978
The Candida albicans toxin candidalysin mediates distinct epithelial inflammatory responses through p38 and EGFR-ERK pathways [ Front Immunol, 2022, 13:824746] PubMed: 35392090
Substrate-Specific Inhibition Constants for Phospholipase A2 Acting on Unique Phospholipid Substrates in Mixed Micelles and Membranes Using Lipidomics [ J Med Chem, 2019, 62(4):1999-2007] PubMed: 30615445
Substrate-Specific Inhibition Constants for Phospholipase A2 Acting on Unique Phospholipid Substrates in Mixed Micelles and Membranes Using Lipidomics [ J Med Chem, 2019, 62(4):1999-2007] PubMed: 30615445
Accumulation of 8,9-unsaturated sterols drives oligodendrocyte formation and remyelination [Hubler Z, et al. Nature, 2018, 560(7718):372-376] PubMed: 30046109
Novel Role for Matrix Metalloproteinase 9 in Modulation of Cholesterol Metabolism [ J Am Heart Assoc, 2016, 5(10)e004228] PubMed: 27694328
Identification of a Novel Heart–Liver Axis: Matrix Metalloproteinase-2 Negatively Regulates Cardiac Secreted Phospholipase A2 to Modulate Lipid Metabolism and Inflammation in the Liver [Hernandez-Anzaldo S, et al. J Am Heart Assoc, 2015, 4:e002553] PubMed: 26567374
Matrix metalloproteinase-2 negatively regulates cardiac secreted phospholipase A2 to modulate inflammation and Fever. [Berry E, et al. J Am Heart Assoc, 2015, 4(4)] PubMed: 25820137
Cytosolic Phospholipase A2 Modulates TLR2 Signaling in Synoviocytes [Sommerfelt RM, et al. PLoS One, 2015, 10(4):e0119088] PubMed: 25893499
Novel role of group VIB Ca2+-independent phospholipase A2F in leukocyte-endothelial cell interactions: An intravital microscopic study in rat mesentery [Kojima M, et al. J Trauma Acute Care Surg, 2015, 79(5):782-9] PubMed: 26496102

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.