Human Cathepsin D Antibody

(1 citations)   
  • Species Reactivity
    Human
  • Specificity
    Detects human Cathepsin D in direct ELISAs and Western blots. It recognizes both the pro and mature forms of recombinant human (rh) Cathepsin D. In direct ELISAs, no cross-reactivity with rhCathepsin A, rhCathepsin B, rhCathepsin C, rhCathepsin L, rhCathepsin O, rhCathepsin S, rhCathepsin Z, or recombinant mouse Cathepsin D is observed. In Western blots, 100% cross-reactivity with rhCathepsin E and rmCathepsin D is observed and no cross-reactivity with rhBACE-1 is observed.
  • Source
    Monoclonal Mouse IgG1 Clone # 185111
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant human Cathepsin D
    Leu21-Leu412
    Accession # P07339
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.2 µg/mL
    See below
  • Simple Western
    2 µg/mL
    See below
  • Immunohistochemistry
    5-25 µg/mL
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Detection of Human Cathepsin D by Western Blot. Western blot shows lysates of PANC‑1 human pancreatic carcinoma cell line and MCF‑7 human breast cancer cell line. PVDF membrane was probed with 0.2 µg/mL of Mouse Anti-Human Cathepsin D Monoclonal Antibody
(Catalog # MAB1014) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). Specific bands were detected for Cathepsin D at approximately 28 and 46 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Immunohistochemistry
Cathepsin D in Human Prostate Cancer Tissue. Cathepsin D was detected in immersion fixed paraffin-embedded sections of human prostate cancer tissue using Mouse Anti-Human Cathepsin D Monoclonal Antibody (Catalog # MAB1014) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to epithelial cell cytoplasm. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Detection of Human Cathepsin D by Simple WesternTM. Simple Western lane view shows lysates of PANC‑1 human pancreatic carcinoma cell line and MCF‑7 human breast cancer cell line, loaded at 0.2 mg/mL. Specific bands were detected for Cathepsin D at approximately 36 and 52‑57 kDa (as indicated) using 2 µg/mL of Mouse Anti-Human Cathepsin D Monoclonal Antibody (Catalog # MAB1014). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.5 mg/mL in sterile PBS.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Cathepsin D

Cathepsin D is a lysosomal aspartic protease of the pepsin family (1). Human cathepsin D is synthesized as a precursor protein, consisting of a signal peptide (aa 1‑18), a propeptide (aa 19-64), and a mature chain (aa 65‑412) (2‑4). The mature chain can be processed further to the light (aa 65‑161) and heavy (aa 169‑412) chains. It is expressed in most cells and overexpressed in breast cancer cells (5). It is a major enzyme in protein degradation in lysosomes, and also involved in the presentation of antigenic peptides. Mice deficient in this enzyme showed a progressive atrophy of the intestinal mucosa, a massive destruction of lymphoid organs, and a profound neuronal ceroid lipofucinosis, indicating that cathepsin D is essential for proteolysis of proteins regulating cell growth and tissue homeostasis (6). Cathepsin D secreted from human prostate carcinoma cells are responsible for the generation of angiostatin, a potent endogeneous inhibitor of angiogenesis (6).

  • References:
    1. Conner et al. in Handbook of Proteolytic Enzymes Barrett (1998) Academic Press, San Diego, p. 828.
    2. Faust, et al. (1985) Proc. Natl. Acad. Sci. USA 82:4910.
    3. Westley and May (1987) Nucl. Acid Res. 15:3773.
    4. Redecker, et al. (1991) DNA Cell Biol. 10:423.
    5. Rochefort, et al. (2000) Clin. Chim. Acta. 291:157.
    6. Tsukuba, et al. (2000) Mol. Cells 10:601.
  • Entrez Gene IDs:
    1509 (Human); 13033 (Mouse)
  • Alternate Names:
    cathepsin D (lysosomal aspartyl protease); Cathepsin D; CPSD; CTSD; EC 3.4.23; EC 3.4.23.5; lysosomal aspartyl peptidase; lysosomal aspartyl protease; MGC2311; neuronal 10
Related Research Areas
Citations:

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citations: Showing 1 - 1

  1. Biomarker discovery from pancreatic cancer secretome using a differential proteomic approach.
    Authors: Gronborg M, Kristiansen TZ, Iwahori A, Chang R, Reddy R, Sato N, Molina H, Jensen ON, Hruban RH, Goggins MG, Maitra A, Pandey A
    Mol. Cell Proteomics, 2006;5(1):157-71.
    Species: Human
    Sample Type: Cell Lysates
    Application: WB
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Isotype Controls
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Mouse IgG1 Isotype Control

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Mouse IgG HRP-conjugated Antibody

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Mouse IgG Antibody

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Mouse F(ab)2 IgG (H+L) Fluorescein-conjugated Antibody

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Mouse/Rabbit IgG VisUCyte HRP Polymer Antibody

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