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Product last modified at: 2024-05-30T07:11:57.774Z
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PDP - Template Name: Chemical Modulators
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  1. Products /
  2. Activators & Inhibitors /
  3. Pepstatin A

Pepstatin A #98806

    Product Information

    Product Usage Information

    Pepstatin A is supplied as a lyophilized powder. For a 10 mM stock, reconstitute 5 mg of powder in 0.73 mL of DMSO. Working concentrations and length of treatment can vary depending on the desired effect.

    Storage

    Store lyophilized at -20ºC, desiccated. In lyophilized form, the chemical is stable for 24 months. Once in solution, store at -20ºC and use within 2 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

    Product Description

    Molecular Weight 685.9 g/mol
    Purity >98%
    Molecular Formula C34H63N5O9
    CAS 26305-03-3
    Solubility Soluble in DMSO at 5 mg/mL or ethanol at 1 mg/mL.

    Background

    Pepstatin A is a low molecular weight inhibitor of aspartyl proteases, including pepsin, renin, cathepsin D and cathepsin E (1). Cathepsin D is a ubiquitously expressed lysosomal aspartyl protease involved in the normal degradation of proteins; dysregulation of cathepsin D plays a role in neuronal degradation and malignant transformation. Cathespin D is highly expressed in triple-negative breast cancer (TNBC) cells. Pepstatin A treatment induced apoptosis and autophagy while reducing the proliferation, invasion, and migration of TNBC cells (2). Increased expression and leakage of lysosomal cathepsin D is associated with cardiomyocyte death related to hyperglycemia. Treatment with Pepstatin A markedly diminished high glucose-induced cardiomyocyte death (3). Pepstatin A treatment of osteoclast cells suppressed receptor activator of NF-κB ligand (RANKL)-induced differentiation to mononuclear osteoclast cells by blocking NFATc1 expression and inhibiting ERK signaling (4). Pepstatin A also inhibits human immunodeficiency virus (HIV) protease (5). Pepstatin A treatment of HIV-infected H9 cells decreased the level of HIV core antigen in the culture medium (6).

    Limited Uses

    Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

    Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

    For Research Use Only. Not For Use In Diagnostic Procedures.
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