Recombinant Human PDGF-BB GMP Protein, CF

Recombinant Human PDGF-BB GMP Protein, CF Summary

Product Specifications

Product Datasheets

Carrier Free

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Background: PDGF-BB

Platelet-derived growth factor (PDGF) was discovered as a major mitogenic factor present in serum but absent from plasma. It was found to be secreted from the alpha ‑granules of platelets activated during the coagulation of blood to form serum. Subsequent studies have demonstrated that PDGF is not one molecule but three, each a dimeric combination of two distinct but structurally related peptide chains designated A and B. The dimeric isoforms PDGF-AA, AB and BB are differentially expressed in various cell types and their effects are mediated through two distinct receptors, termed alpha and beta. Differences exist in isoform binding to each receptor. In general, PDGF isoforms are potent mitogens for connective tissue cells, including dermal fibroblasts, glial cells, arterial smooth muscle cells and some epithelial and endothelial cells. In addition to its activity as a mitogen, PDGF is chemotactic for fibroblasts, smooth muscle cells, neutrophils and mononuclear cells. Other reported activities for PDGF include stimulation of granule release by neutrophils and monocytes, facilitation of steroid synthesis by Leydig cells, stimulation of neutrophil phagocytosis, inhibition of natural killer (NK) cell activity, stimulation of collagen synthesis, modulation of thrombospondin expression and secretion, stimulation of collagenase activity and secretion, induction of contraction of rat aorta strips in vitro, and transient induction of T cell IL-2 secretion accompanied by a down-regulation of IL-4 and IFN-gamma production, temporary effects that may allow clonal expansion of antigen-activated B and T helper lymphocytes prior to differentiation. PDGF also appears to be ubiquitous in neurons throughout the CNS, where it is suggested to play an important role in neuron survival and regeneration, and in mediation of glial cell proliferation and differentiation.

Manufacturing Specifications

GMP Proteins
R&D Systems, a Bio-Techne Brand's GMP proteins are produced according to relevant sections of the following documents: USP Chapter 1043, Ancillary Materials for Cell, Gene and Tissue-Engineered Products and Eu. Ph. 5.2.12, Raw Materials of Biological Origin for the Production of Cell-based and Gene Therapy Medicinal Products.

R&D Systems' quality focus includes:

• Designed, manufactured and tested under an ISO 9001:2015 and ISO 13485:2016 certified quality system
• Documented and controlled manufacturing process
• Control of documentation and process changes by QA
• Personnel training programs
• Raw material inspection and vendor qualification/monitoring program
• Validated equipment, processes and test methods
• Equipment calibration and maintenance schedules using a Regulatory Asset Manager
• Facility/Utilities maintenance, contamination controls, safety and pest control programs
• Material review process for variances
• Robust product stability program following relevant ICH guidelines
  
  

R&D Systems strives to provide our customers with the analytical characteristics of each product so that customers may determine whether our products are appropriate for their application. Each product is provided with a lot-specific Certificate of Analysis that contains the product's specifications and test results. Quality control testing may include, but is not limited to:

• N-terminal amino acid analysis
• SDS-PAGE purity analysis
• Molecular weight analysis via mass spectrometry
• Endotoxin assessment per USP <85> and Ph. Eur. 2.6.14 guidelines
• Bioassay analysis
• Microbial testing per USP <71> and Ph. Eur. 2.6.1 guidelines
• Host cell protein assessment
• Host cell DNA assessment
• Mycoplasma assessment
  
  

Additional testing and documentation requested by the customer can be arranged at an additional cost. 

Production records and facilities are available for examination by appropriate personnel on-site at R&D Systems in Minneapolis and St. Paul, Minnesota USA.

R&D Systems sells GMP grade products for preclinical or clinical ex vivo use. They are not for in vivo use. Please read the following End User Terms prior to using this product.


Animal-Free Manufacturing Conditions
Our dedicated controlled-access animal-free laboratories ensure that at no point in production are the products exposed to potential contamination by animal components or byproducts. Every stage of manufacturing is conducted in compliance with R&D Systems' stringent Standard Operating Procedures (SOPs). Production and purification procedures use equipment and media that are confirmed animal-free.

Production

• All molecular biology procedures use animal-free media and dedicated labware.
• Dedicated fermentors are utilized in committed animal-free areas.
  
  

Purification

• Protein purification columns are animal-free.
• Bulk proteins are filtered using animal-free filters.
• Purified proteins are stored in animal-free containers.

Please read our complete Animal-Free Statement

Product Specific Notices

Full terms and conditions of sale can be found online in the Protein Sciences Segment T&Cs at: Terms & Conditions.

Related Research Areas

• Alpha Granule Soluble Molecules
• PDGF Family
• PDGF Family Ligands
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