Follistatin (FST) is a single-chain glycosylated protein of gonadal origin, originally identified as an antagonist of activin and suppressor of follicle stimulating hormone (FSH) synthesis/secretion. Alternative splicing of FST mRNA generates the two isoforms FS315 and FS288, the latter of which is the main cell-surface form and binds with high affinity to surface heparan sulphate proteoglycans, while FS315 binds with only low-affinity, and is considered to be the main circulating form of follistatin. As well as activin, FST interacts with other growth factors such as bone morphogenetic proteins (BMPs) -2, -4 and -7, myostatin, and growth differentiation factor 9 (GDF-9), playing a key role in cellular differentiation/proliferation, embryonic development and tissue repair.
Applications:
Suitable for use in ELISA, Western Blot, and Immunohistochemistry. Other applications not tested.
Recommended Dilution:
Immunohistochemistry (paraffin): Antigen retrieval using heat treatment prior to staining of paraffin sections is required. Sodium citrate buffer, pH 6.0 is recommended for this purpose. Optimal dilutions to be determined by the researcher.
Hybridoma:
Spleen cells from immunized Balb/c mice were fused with cells of the Sp2/0 myeloma cell line.
Positive Control:
Testis
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.