Human Thrombopoietin/Tpo Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB2881

R&D Systems, part of Bio-Techne
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MAB2881
MAB2881-SP
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Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

Western Blot

Cited:

ELISA Development

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # 34863

View all Thrombopoietin/Tpo Antibodies »

Product Specifications

Immunogen

S. frugiperda insect ovarian cell line Sf 21-derived recombinant human Thrombopoietin/Tpo
Ser22-Gly353
Accession # P40225

Specificity

Detects human Thrombopoietin/Tpo in direct ELISAs and Western blots. In Western blots, no cross-reactivity with recombinant mouse Tpo is observed.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Applications for Human Thrombopoietin/Tpo Antibody

Application
Recommended Usage

Western Blot

1 µg/mL
Sample: Recombinant Human Thrombopoietin/Tpo (Catalog # 288-TP)

Reviewed Applications

Read 1 review rated 5 using MAB2881 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein A or G purified from ascites

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Reconstitution Buffer Available:
Size / Price
Qty

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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: Thrombopoietin/Tpo

Thrombopoietin (Tpo), is a key regulator of megakaryocytopoiesis and thrombopoiesis. It is principally produced in the liver and is bound and internalized by the receptor Tpo R/c-mpl. Defects in the Tpo-Tpo R signaling pathway are associated with a variety of platelet disorders (1 - 3). The 353 amino acid (aa) human Tpo precursor is cleaved to yield the 332 aa mature protein. Mature human Tpo shares approximately 70% aa sequence homology with mouse and rat Tpo. It is an 80 - 85 kDa protein that consists of an N-terminal domain with homology to Erythropoietin (Epo) and a C-terminal domain that contains multiple N-linked and O-linked glycosylation sites (4, 5). Tissue specific alternate splicing of human Tpo generates multiple isoforms with internal deletions, insertions, and/or C-terminal substitutions (6). Tpo promotes the differentiation, proliferation, and maturation of megakaryocytes (MK) and their progenitors (4, 5, 7). Several other cytokines can promote these functions as well but only in cooperation with Tpo (8, 9). Notably, IL-3 independently induces MK development, although its effects are restricted to early in the MK lineage (8, 9). Tpo additionally promotes platelet production, aggregation, ECM adhesion, and activation (10 - 13). It is cleaved by platelet-derived thrombin following Arg191 within the C-terminal domain and subsequently at other sites upon extended digestion (14). Full length Tpo and shorter forms circulate in the plasma (4, 5). The C terminal domain is not required for binding to Tpo R or inducing MK growth and differentiation (5). Aside from its hematopoietic effects, Tpo is expressed in the brain where it promotes the apoptosis of hypoxia-sensitized neurons and inhibits neuronal differentiation by blocking NGF induced signaling (15, 16).

References

  1. Deutsch, V.R. and A. Tomer (2006) Br. J. Haematol. 134:453.
  2. Kaushansky, K. (2005) J. Clin. Invest. 115:3339.
  3. Li, J. et al. (1999) Br. J. Haematol. 106:345.
  4. Bartley, T.D. et al. (1994) Cell 77:1117.
  5. de Sauvage, F.J. et al. (1994) Nature 369:533.
  6. Marcucci, R. and M. Romano (2008) Biochim. Biophys. Acta 1782:427.
  7. Kaushansky, K. et al. (1994) Nature 369:568.
  8. Kaushansky, K. et al. (1995) Proc. Natl. Acad. Sci. 92:3234.
  9. Broudy, V.C. et al. (1995) Blood 85:1719.
  10. Lok, S.I. et al. (1994) Nature 369:565.
  11. Chen, J. et al. (1995) Blood 86:4054.
  12. Oda, A. et al. (1996) Blood 87:4664.
  13. Van Os, E. et al. (2003) Br. J. Haematol. 121:482.
  14. Kato, T. et al. (1997) Proc. Natl. Acad. Sci. 94:4669.
  15. Ehrenreich, H. et al. (2005) Proc. Natl. Acad. Sci. 102:862.
  16. Samoylenko, A. et al. (2008) Cell. Signal. 20:154.

Alternate Names

MGDF, MK-CSF, MKCSF, MPLLG, THCYT1, THPO, Tpo

Entrez Gene IDs

7066 (Human); 21832 (Mouse); 81811 (Rat)

Gene Symbol

THPO

UniProt

P40225

Additional Thrombopoietin/Tpo Products

Product Documents for Human Thrombopoietin/Tpo Antibody

Product Datasheets

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

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Product Specific Notices for Human Thrombopoietin/Tpo Antibody

For research use only

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