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Merck
CN

937983

Sigma-Aldrich

Protein delivery system

Human FGF-2, PODS®

Synonym(s):

PODS®

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biological source

(Spodoptera frugiperda (Sf9) cell culture)

Quality Level

form

(monodisperse crystals)

packaging

1 ea of 25 μg

technique(s)

: suitable using 3D bioprinting | cell culture

impurities

<0.06 EU/mL Endotoxin

color

colorless

storage temp.

2-8°C

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General description

Protein delivery system, Human FGF-2, PODS contains the polyhedrin protein co-crystalized with Human FGF-2. Fibroblast Growth Factor 2 (FGF-2) is expressed by endothelial cells and is a mediator of angiogenesis. FGF-2 also has cardioprotective functions during heart injury. The application of FGF-2 is a critical component for embryonic stem cell culture systems and is necessary for maintaining cells in an undifferentiated state. Degredation of the full length FGF-2 N-terminus results in a truncated FGF-2 147 amino acids protein, when the protein is isolated from biological sources. The N-terminus extensions influence the localization of FGF-2 within the cell, but do not affect the biological activity of FGF-2.

Application

PODS are composed of a bioactive cargo protein within a polyhedrin crystal lattice, with polyhedrin as the main protein. The 25 µg SKU size indicates the amount of bioactive cargo, typically 0.5% to 5% of the total protein. For instance, a 25 µg SKU at a 2% cargo loading contains 1.25 mg of total protein. PODS enable sustained release of cargo proteins when proteases degrade the polyhedrin scaffold. Growth factors are not bioavailable until released, and their concentration in media depends on the amount added and the release rate. In 10% serum, peak levels are usually reached within 24-48 hours, with about 20% of the cargo becoming soluble.

PODS often require lower concentrations than conventional growth factors, as they maintain effective levels. Pre-incubating with serum or proteases enhances availability, while conventional factors can be added for immediate effects. Optimal amounts should be determined empirically.

Features and Benefits

  • Protein delivery system, PODS Human FGF-2 comes with molecular weight of 30 kDa, length 275 aa and endotoxin level <0.06 EU/ml. PODS co-crystals may be reconstituted at 200 million co-crystals/ml in sterile PBS. 20% glucose has a buoyant density closer to PODS co-crystals and can be useful for aliquoting.
  • This product is produced with no animal derived raw products. All processing and handling employs animal free equipment and animal free protocols. PODS co-crystals are highly stable when stored in aqueous solution (pH range 6 - 8).
  • PODS provides durability, stability AND sustained release, addressing the limitations of conventional and enabling researchers to effortlessly control and manipulate cells in 2D and 3D culture as well as in-vivo.

Legal Information

PODS is a registered trademark of Cell Guidance Systems Ltd

Storage Class Code

11 - Combustible Solids

Regulatory Information

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FGF2 Inhibits Early Pancreatic Lineage Specification during Differentiation of Human Embryonic Stem Cells
Dettmer R, et al.
Cells, 9(9), 1927-1927 (2020)
FGF2 engineered SPIONs attenuate tumor stroma and potentiate the effect of chemotherapy in 3D heterospheroidal model of pancreatic tumor
Mardhian DF, et al.
Nanotheranostics, 4(1), 26-39 (2020)

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