Human NT-4 Antibody

Catalog # Availability Size / Price Qty
AF-268-NA
AF-268-SP
Cell Proliferation Induced by NT‑4 and Neutralization by Human NT‑4 Antibody.
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Citations (1)
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Human NT-4 Antibody Summary

Species Reactivity
Human
Specificity
Detects human NT-4 in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant human (rh) NT-3 and rhBDNF is observed.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human NT-4
Gly81-Ala210
Accession # P34130
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.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Western Blot
0.1 µg/mL
Recombinant Human NT‑4 (Catalog # 268-N4)
Immunohistochemistry
5-15 µg/mL
Immersion fixed paraffin-embedded sections of human brain (cortex)
Neutralization
Measured by its ability to neutralize NT‑4-induced proliferation in BaF‑TrKB‑BD mouse pro‑B cell line transfected with TrkB. The Neutralization Dose (ND50) is typically 0.4-2 µg/mL in the presence of 40 ng/mL Recombinant Human NT‑4.

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 Example

Neutralization Cell Proliferation Induced by NT‑4 and Neutralization by Human NT‑4 Antibody. View Larger

Cell Proliferation Induced by NT‑4 and Neutralization by Human NT‑4 Antibody. Recombinant Human NT‑4 (Catalog # 268-N4) stimulates proliferation in BaF‑TrKB‑BD mouse pro‑B cell line transfected with TrkB in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human NT‑4 (40 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human NT‑4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-268-NA). The ND50 is typically 0.4‑2 µg/mL.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
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: NT-4

Neurotrophin-4 (NT-4), also known as NT-5, is a member of the NGF family of neuronal and epithelial growth factors. Neurotrophins have six conserved cysteine residues that are involved in the formation of three disulfide bonds (1‑3). The human NT-4 cDNA encodes a 210 amino acid (aa) precursor that includes a 24 aa signal sequence, a 56 aa propeptide, and a 130 aa mature protein (4, 5). NT‑4 is synthesized as a 28 kDa prepropeptide that is proteolytically processed to generate the mature protein. Mature human NT-4 shares 48‑52% aa sequence identity with human beta-NGF, BDNF, and NT-3. It shares 91% and 95% aa sequence identity with mouse and rat NT-4/5, respectively. The mature protein is secreted as a homodimer and can also form heterodimers with BDNF or NT-3 (6). NT-4 binds and induces receptor dimerization and activation of TrkB (4, 7). NT-4 promotes the development and survival of selected peripheral and CNS neurons (8‑10). BDNF, which also activates TrkB, overlaps with many but not all NT-4 functions, a distinction that is likely due to differences in expression patterns (8‑10). NT-4 induced TrkB signaling augments NMDA receptor activity and increases neuronal sensitivity to excitotoxic cell death (11). It also promotes the proliferation of keratinocytes and accelerates hair follicle regression during the follicular cycle (12, 13). NT-4 is secreted by activated T cells and granulocytes at sites of inflammation where it contributes to tissue regeneration (14‑16).

References
  1. Lessmann, V. et al. (2003) Prog. Neurobiol. 69:341.
  2. Tabakman, R. et al. (2004) Prog. Brain Res. 146:387.
  3. Botchkarev, V.A. et al. (2004) Prog. Brain Res. 146:493.
  4. Ip, N.Y. et al. (1992) Proc. Natl. Acad. Sci. 89:3060.
  5. Berkemeier, L.R. et al. (1991) Neuron 7:857.
  6. Radziejewski, C. and R.C. Robinson (1993) Biochemistry 32:13350.
  7. Vesa, J. et al. (2000) J. Biol. Chem. 275:24414.
  8. Davies, A.M. et al. (1993) J. Neurosci. 13:4961.
  9. Stucky, C.L. et al. (1998) J. Neurosci. 18:7040.
  10. Fan, G. et al. (2000) Nat. Neurosci. 3:350.
  11. Choi, S.Y. et al. (2004) J. Neurochem. 88:708.
  12. Botchkarev, V.A. et al. (1999) Lab. Invest. 79:557.
  13. Botchkarev, V.A. et al. (1999) FASEB J. 13:395.
  14. Laurenzi, M.A. et al. (1998) J. Leukoc. Biol. 64:228.
  15. Moalem, G. et al. (2000) J. Autoimmun. 15:331.
  16. Nassenstein, C. et al. (2003) J. Exp. Med. 198:455.
Long Name
Neurotrophin 4
Entrez Gene IDs
4909 (Human)
Alternate Names
GLC10; GLC1O; neurotrophic factor 4; neurotrophic factor 5; neurotrophin 4; neurotrophin 5 (neurotrophin 4/5); neurotrophin-4; neurotrophin-5; Neutrophic factor 4; NT4; NT-4; NT-4/5; NT-5; NTF4; NTF5; NTF5NT5

Product Datasheets

Citation for Human NT-4 Antibody

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 Citation: Showing 1 - 1

  1. Brain-derived neurotrophic factor and neurotrophin-4/5 are expressed in breast cancer and can be targeted to inhibit tumor cell survival.
    Authors: Vanhecke E, Adriaenssens E, Verbeke S, Meignan S, Germain E, Berteaux N, Nurcombe V, Le Bourhis X, Hondermarck H
    Clin. Cancer Res., 2011;17(7):1741-52.
    Species: Human
    Sample Types: Whole Cells
    Applications: Neut

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