Active Platelet Derived Growth Factor Subunit B (PDGFB)

PDGF-B; PDGF2; SIS; SSV; C-sis; Simian Sarcoma Viral(v-sis)Oncogene Homolog; Platelet Derived Growth Factor Beta Polypeptide; Proto-oncogene c-Sis; Becaplermin

ACTIVITY TEST

Figure. The binding activity of PDGFB with NRP-1.
Platelet-derived growth factor subunit B (PDGFB) is a member of the platelet-derived growth factor family in humans. The four members of this family are mitogenic factors for cells of mesenchymal origin and are characterized by a motif of eight cysteines. This gene product can exist either as a homodimer (PDGF-BB) or as a heterodimer with the platelet-derived growth factor alpha (PDGFA) polypeptide (PDGF-AB), where the dimers are connected by disulfide bonds. Besides, Neuropilin-1 (NRP-1) has been identified as an interactor of PDGFB, thus a binding ELISA assay was conducted to detect the interaction of recombinant human PDGFB and recombinant human NRP-1. Briefly, PDGFB were diluted serially in PBS, with 0.01% BSA (pH 7.4). Duplicate samples of 100uL were then transferred to NRP-1-coated microtiter wells and incubated for 2h at 37℃. Wells were washed with PBST and incubated for 1h with anti- PDGFB pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37℃. Finally, add 50µL stop solution to the wells and read at 450nm immediately. The binding activity of PDGFB and NRP-1 was shown in Figure 1, and this effect was in a dose dependent manner.

Figure. Cell proliferation of MCF-7 cells after stimulated with IGF2.
PDGFs are mitogenic during early developmental stages, driving the proliferation of undifferentiated mesenchyme and some progenitor populations. During later maturation stages, PDGF signalling has been implicated in tissue remodelling and cellular differentiation, and in inductive events involved in patterning and morphogenesis. In addition to driving mesenchymal proliferation, PDGFs have been shown to direct the migration, differentiation and function of a variety of specialised mesenchymal and migratory cell types, both during development and in the adult animal. A proliferation assay was conducted to detect the bioactivity of recombinant human PDFGB using MCF-7 cells. Briefly, MCF-7 cells were seeded into triplicate wells of 96-well plates at a density of 5,000 cells/well and allowed to attach, replaced with serum-free overnight, then the medium was replaced with 1% serum standard DMEM prior to the addition of various concentrations of PDGFB. After incubated for 96h, cells were observed by inverted microscope and cell proliferation was measured by Cell Counting Kit-8 (CCK-8). Briefly, 10µL of CCK-8 solution was added to each well of the plate, then the absorbance at 450nm was measured using a microplate reader after incubating the plate for 1-4 hours at 37℃. Proliferation of MCF-7 cells after incubation with PDGFB for 96h observed by inverted microscope was shown in Figure 2. Cell viability was assessed by CCK-8 (Cell Counting Kit-8 ) assay after incubation with recombinant PDGFB for 96h. The result was shown in Figure 3. It was obvious that PDGFB significantly increased cell viability of MCF-7 cells.
(A) MCF-7 cells cultured in DMEM, stimulated with 1ng/mL PDGFB for 96h;
(B) Unstimulated MCF7 cells cultured in DMEM for 96h.

USAGE

Reconstitute in 20mM Tris, 150mM NaCl (pH8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

STORAGE

Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.

STABILITY

The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.

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Magazine Citations
AAPS PharmSciTech Inhibition of Glomerular Mesangial Cell Proliferation by siPDGF-B-and siPDGFR-β-Containing Chitosan Nanoplexes pubmed:27975193
Marmara Pharmaceutical Journal In vitro PDGF-B gene silencing studies and In vivo delivery of siRNA to the rat kidney using Chitosan/siRNA nanoplexes 5000184338
International Journal of Clinical and Experimental Pathology Platelet-derived growth factor and stromal cell-derived factor-1 promote the skin wound repairing effect of bone mesenchymal stem cells: a key role of matrix metalloproteinase 1 and collagens ISSN:1936-2625/IJCEP0058424
Cell Biology International Melatonin promotes osteoblastic differentiation and regulates PDGF/AKT signaling pathway Pubmed: 31535749
Ann Agric Environ Med PDGF-BB homodimer serum level–a good indicator of the severity of alcoholic liver cirrhosis Pubmed: 32208584
Journal of Tissue Engineering Therapeutic potential of adipose-derived mesenchymal stem cell exosomes in tissue-engineered bladders 33868627
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RPC921Hu01 Recombinant Platelet Derived Growth Factor Subunit B (PDGFB) Positive Control; Immunogen; SDS-PAGE; WB.
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SEC921Hu ELISA Kit for Platelet Derived Growth Factor Subunit B (PDGFB) Enzyme-linked immunosorbent assay for Antigen Detection.
SCC921Hu CLIA Kit for Platelet Derived Growth Factor Subunit B (PDGFB) Chemiluminescent immunoassay for Antigen Detection.
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