Western Blotting (WB), Immunohistochemistry (Paraffin-embedded Sections) (IHC (p))
Specificity
This antibody recognizes the ~93 kDa Periostin doublet in mouse lung extract. This antibody does not recognize the single heart form of Periostin or the lowest molecular weight form of lung periostin. Consistent with the fact that this antibody is made against an alternatively spliced region of periostin, this antibody recognizes a subset of the forms of Periostin recognized on Western blots by the Pan Periostin antibody (Cat#AP08724AF-N) and also shows a distinctive staining pattern by Immunohistochemistry (data not shown).
Cross-Reactivity (Details)
Species reactivity (expected):Mammalia and Avian. Species reactivity (tested):Human, Mouse, Rat and Chicken.
Purification
Affinity Chromatography.
Immunogen
Bacterial fusion protein equivalent to a 188-amino acid polypeptide from the C-terminal region of mouse Periostin which is comprised of six small alternatively-spliced exons.
POSTN
Reactivity: Human
IHC
Host: Mouse
Monoclonal
MSVA-649M
unconjugated
Application Notes
Western blot: 1/1000. Immunohistochemistry: 1/100. The antibody works well for Immunohistochemistry on paraformaldehyde-fixed sectionswith a simple antigen-retrieval protocol (incubate slides for 20 minutes at 90 °C in 10 mMsodium citrate ( pH 6.0)/ 0.1 % Tween-20). Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
Restrictions
For Research Use only
Format
Liquid
Buffer
PBS without preservatives.
Preservative
Without preservative
Handling Advice
Avoid repeated freezing and thawing.
Storage
-20 °C
Storage Comment
Store the antibody undiluted (in aliquots) at-20 °C.
Periostin is a matricellular protein, i.e. an extracellular matrix protein that interacts both with other ECM proteins and with cell-surface receptors. Like many other matricellular proteins, the function of periostin is important both in embryonic development and in the remodeling of adult tissues in response to pathological insults. Periostin was originally isolated as an osteoblast-specific marker that functions as a cell adhesion molecule for preosteoblasts and is thought to be involved in osteoblast recruitment, attachment and spreading (Kruzynska-Frejtag A. et al., 2004). Periostin has recently been shown to promote collagen fibrogenesis, inhibit differentiation of progenitor cells into cardiomyocytes and to be essential in maintaining the biomechanical properties of the adult myocardium (Norris et al., 2008)Synonyms: OSF-2, OSF2, Osteoblast-specific factor 2, PN, POSTN