PODS® Human CCL13
PODS® proteins are made using an insect cell expression system in which the active protein is co-expressed alongside polyhedrin carrier protein. Polyhedrin forms microcrystals within insect cells which specifically capture the active protein to form a co-crystal complex. The active protein is captured in its nascent, natively folded form with limited scope for proteolytic degradation. Consequently, excellent levels of bioactivity are observed. The PODS® co-crystals provide a sustained release mechanism and can be used to functionalize surfaces. For further details, please refer to the PODS® Technology page.
The product contains the polyhedrin protein co-crystalized with Human CCL13. A member of the CC sub-family of chemokines, CCL13 signals primarily via the CC chemokine receptors CCR2B and CCR3. It is a chemoattractant for monocytes, lymphocytes, basophils and eosinophils. It is also involved in the accumulation of leukocytes at the sites of allergic and non-allergic inflammation. The activity of this protein can be induced via several inflammatory cytokines, including interleukin-1 and TNF-α.
PODS® co-crystals provide a depot of proteins which are steadily secreted. It has been estimated that the biological activity of 50 million PODS® co-crystals generates the same peak dose as 3.3 µg of standard recombinant protein. However, at 5 days following the start of seeding the PODS® co-crystals, there are more than 50% of these peak levels still present in the culture system. Ultimately, the amount of PODS® co-crystals that is optimal for a particular experiment should be determined empirically. Based on previous data, we suggest using 50 million PODS® co-crystals in place of 3.3 µg of standard growth factor as a starting point.
To control for cross-reactivity with cells or as a negative control, we recommend using PODS® growth factors alongside PODS® Empty crystals, as the latter do not contain or release cargo protein.
This product is produced with no animal derived raw products. All processing and handling employs animal free equipment and animal free protocols.
MADVAGTSNR DFRGREQRLF NSEQYNYNNS KNSRPSTSLY KKAGFMKVSA VLLCLLLMTA AFNPQGLAQP DALNVPSTCC FTFSSKKISL QRLKSYVITT SRCPQKAVIF RTKLGKEICA DPKEKWVQNY MKHLGRKAHT LKT
C-C Motif Chemokine 13, NCC-1, CK-beta-10, MCP-4, Monocyte chemoattractant protein 4, Monocyte chemotactic protein 4, SCYA13, SCYL1, Small-inducible cytokine A13
Research Use Only
This product is for Research Use Only.
Spodoptera frugiperda (Sf9) cell culture
<0.06 EU/ml as measured by gel clot LAL Assay
PODS® were lyophilized from a volatile solution
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.
PODS® co-crystals are highly stable when stored in aqueous solution (pH range 6 - 8).
|Stability and Storage
Upon receipt, store at 4°C. PODS® co-crystals are stable for at least 1 year when dry and 6 months when resuspended.