PLGF Antibody (1038863) [Unconjugated] Summary
Immunogen |
E. coli-derived human PlGF Ala21-Arg149 Accession # P49763 |
Specificity |
Detects human PIG-1,2,3 and 4 in direct ELISAs.
|
Source |
N/A |
Isotype |
IgG2a |
Clonality |
Monoclonal |
Host |
Mouse |
Purity Statement |
Protein A or G purified from hybridoma culture supernatant |
Endotoxin Note |
<0.10 EU per 1 μg of the antibody by the LAL method. |
Innovator's Reward |
Test in a species/application not listed above to receive a full credit towards a future purchase. |
Applications/Dilutions
Packaging, Storage & Formulations
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.
|
Buffer |
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. |
Reconstitution Instructions |
Reconstitute at 0.5 mg/mL in sterile PBS. |
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for PLGF Antibody (1038863) [Unconjugated]
Background
Placenta Growth Factor (PlGF) is a member of the PDGF/VEGF family of growth factors that share a conserved pattern of eight cysteines (1, 2). Alternative splicing results in at least three human mature PlGF forms containing 131 (PlGF-1), 152 (PlGF-2), and 203 (PlGF-3) amino acids (aa) respectively (1, 2). Only PlGF-2 contains a highly basic heparin-binding 21 aa insert at the C-terminus (1). Human PlGF-1 shares 56%, 55%, 74% and 95% aa identity with the comparable isoform of mouse, rat, canine, and equine PlGF, respectively. PlGF is mainly found as variably glycosylated, secreted, 55-60 kDa disulfide linked homodimers (3). Mammalian cells expressing PlGF include villous trophoblasts, decidual cells, erythroblasts, keratinocytes, and some endothelial cells (1, 4-6). Circulating PlGF increases during pregnancy, reaching a peak in mid-gestation; this increase is attenuated in preeclampsia (7). However, deletion of PlGF in the mouse does not affect development or reproduction. Postnatally, mice lacking PlGF show impaired angiogenesis in response to ischemia (8). PlGF binds and signals through VEGF R1/Flt-1 but not VEGF R2/Flk-1/KDR, while VEGF binds both but signals only through the angiogenic receptor, VEGF R2. PlGF and VEGF therefore compete for binding to VEGF R1, allowing high PlGF to discourage VEGF/VEGF R1 binding and promote VEGF/VEGF R2-mediated angiogenesis (1, 4, 8, 9). However, PlGF (especially PlGF-1) and some forms of VEGF can form dimers that decrease the angiogenic effect of VEGF on VEGF R2 (3, 4). PlGF-2, but not PLGF-1, shows heparin-dependent binding of Neuropilin (Npn)-1 and Npn-2 (10, 11). PlGF induces monocyte activation, migration, and production of inflammatory cytokines and VEGF. These activities facilitate wound, bone fracture, and cardiac repair, but also contribute to inflammation in active sickle cell disease and atherosclerosis (5, 6, 8, 12-15). PlGF can also inhibit TIMP3 expression in the spleen, leading to immune triggering of hypertension (16).
- Hauser, S. and H.A. Weich (1993) Growth Factors 9:259.
- Maglione, D. et al. (1993) Oncogene 8:925.
- Eriksson, A. et al. (2002) Cancer Cell 1:99.
- Ribatti, D. (2008) Angiogenesis 11:215.
- Oura, H. et al. (2003) Blood 101:560.
- Roncal, C. et al. (2010) Cardiovasc. Res. 86:29.
- Levine, R.J. et al. (2004) N. Engl. J. Med. 350:672.
- Carmeliet, P. et al. (2001) Nat. Med. 7:575.
- Autiero, M. et al. (2003) Nat. Med. 9:936.
- Migdal, M. et al. (1998) J. Biol. Chem. 273:22272.
- Cheng, L. et al. (2004) J. Biol. Chem. 279:30654.
- Perelman, N. et al. (2003) Blood 102:1506.
- Cianfarani, F. et al. (2006) Am. J. Pathol. 169:1167.
- Maes, C. et al. (2006) J. Clin. Invest. 116:1230.
- Iwasaki, H. et al. (2011) PLoS One 6:e24872.
- Carnevale, D. et al. (2014) Immunity 41:737.
Limitations
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are
guaranteed for 1 year from date of receipt.
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