PODS Human Wnt-3a from Cell Guidance Systems

PODS™ Technology

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.

Product Description

The product contains the polyhedrin protein co-crystalized with Human Wnt-3a. Wnt-3a signalling has been implicated in the control of differentiation of stem cells. Wnt proteins have been shown to regulate cell-to-cell interactions during embryogenesis, more specifically regulating mesoderm differentiation and osteogenesis. The Wnts have also been shown to have putative roles in the regulation of adult stem cells.

Usage Recommendation

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.

AA Sequence

MADVAGTSNR DFRGREQRLF NSEQYNYNNS KNSRPSTSLY KKAGFMAPLG
YFLLLCSLKQ ALGSYPIWWS LAVGPQYSSL GSQPILCASI PGLVPKQLRF
CRNYVEIMPS VAEGIKIGIQ ECQHQFRGRR WNCTTVHDSL AIFGPVLDKA
TRESAFVHAI ASAGVAFAVT RSCAEGTAAI CGCSSRHQGS PGKGWKWGGC
SEDIEFGGMV SREFADAREN RPDARSAMNR HNNEAGRQAI ASHMHLKCKC
HGLSGSCEVK TCWWSQPDFR AIGDFLKDKY DSASEMVVEK HRESRGWVET
LRPRYTYFKV PTERDLVYYE ASPNFCEPNP ETGSFGTRDR TCNVSSHGID
GCDLLCCGRG HNARAERRRE KCRCVFHWCC YVSCQECTRV YDVHTCKNPG
SRAGNSAHQP PHPQPPVRFH PPLRRAGKVP

Alternative Names

Wingless type 3, MMTV integration site family member 3A, Wnt 3a, Wnt3a