937924
Protein delivery system
Human CXCL1, PODS®
Synonym(s):
PODS
biological source
(Spodoptera frugiperda (Sf9) cell culture)
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
Quality Level
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General description
Protein delivery system, Human CXCL1, PODS contains the polyhedrin protein co-crystalized with Human CXCL1. Also known as GRO-alpha, CXCL1 is a member of the CXC subfamily of chemokines. It is a proinflammatory cytokine and a potent neutrophil attractant, playing a role in neutrophil migration and activation. CXCL1 is both structurally and functionally related to CXCL2 and CXCL3, all of which signal primarily via the IL-8 receptor type B. In vitro, CXCL1 is cleaved into three isoforms, CXCL1(4-73), CXCL1(5-73) and CXCL1(6-73), each of which shows higher chemotactic activity than the full-length protein. CXCL1 is known to be overexpressed constitutively in tumorigenic cells, with elevated levels seen in several tumour types. Human CXCL1 shares 64% and 67% aa sequence identity with mouse and rat CXCL1, respectively.
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.
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 CXCL1, PODS comes with molecular weight of 13.05 kDa, length 118 aa, with endotoxin level of <0.06 EU/ml as measured by gel clot LAL assay. 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
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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Casasanta M, et al.
Science Signaling, 13 (2020)
Georgia Gunner et al.
Nature neuroscience, 22(7), 1075-1088 (2019-06-19)
Microglia rapidly respond to changes in neural activity and inflammation to regulate synaptic connectivity. The extracellular signals, particularly neuron-derived molecules, that drive these microglial functions at synapses remain a key open question. Here we show that whisker lesioning, known to
CXCL1 derived from tumor-associated macrophages promotes breast cancer metastasis via activating NF-?B/SOX4 signaling
Wang N, et al.
Cell Death & Disease, 9, 880-880 (2018)
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