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Invitrogen
FSTL1 Polyclonal Antibody
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FIGURE: 1 / 4
FSTL1 Antibody (PA5-100097) in ICC/IF
Immunofluorescent analysis of FSTL1 in HeLa cells. Samples were fixed with paraformaldehyde, permeabilized with 0.1% Triton X-100, blocked with 10% serum (45 min at 25°C), incubated with mouse anti-beta tubulin and FSTL1 polyclonal antibody (Product # PA5-100097) using a dilution of 1:200 (1 hr, 37°C), and followed by goat anti-rabbit IgG Alexa Fluor 594 (red) and goat anti-mouse IgG Alexa Fluor 488 (green).
Product Details
PA5-100097
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human,
Rat
Host/Isotype
Rabbit
/ IgG
Class
Polyclonal
Type
Antibody
Immunogen
A synthesized peptide derived from human FSTL1(Accession Q12841), corresponding to amino acid residues E41-Q91.
Conjugate
Form
Liquid
Concentration
1 mg/mL
Purification
Affinity chromatography
Storage buffer
PBS, pH 7.4, with 50% glycerol
Contains
0.02% sodium azide
Storage conditions
-20°C
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Product Specific Information
Antibody detects endogenous levels of total FSTL1.
Target Information
Follistatin-like protein 1 (FSTL1) is a widely-expressed, extracellular glycoprotein that is homologously grouped into the osteonectin (BM-40/SPARC) family of secreted proteins based on its possession of both a follistatin-like and extracellular calcium-binding domain. Initially identified as a TGF-beta-inducible protein in a cloned mouse osteoblast cell line, FSTL1 has since been implicated in an array of cell-type-specific functions, such as the regulation of proliferation, differentiation, apoptosis and migration, as well as a number of biological processes, including embryonic development, inflammatory response, angiogenesis, tumorigenesis, and immune disease pathogenesis. Highly conserved across mammalian species and widely expressed in human tissues, FSTL1 can be upregulated through signaling mediators of the innate immune system,such as TLR4 agonists and the arthritogenic cytokine IL-1beta via NFkappaB pathways, to stimulate the expression and secretion of pro-inflammatory cytokines, including TNF-alpha, IL-1beta, IL-6 and IL-8. While cells of mesenchymal lineage are capable of FSTL1 production, FSTL1 expression is notably absent from cells of hematopoietic lineage under normal physiological conditions. Macrophages and monocytes are, however, capable of taking up FSTL1 at sites of inflammation where FSTL1 stimulation can cause the expression of caspase-1 and its resultant enzymatic cleavage of active IL-1beta from pro-IL-1beta. Whereas the overexpression of FSTL1 has been noted as a substantial contributor to the progression of immune diseases like rheumatoid arthritis (RA) and osteoarthritis (OA), diminished FSTL1 serum levels have been identified as playing a significant part in both ovarian and endometrial carcinogenesis, where it directly affects cell proliferation, migration and invasion.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: FLJ50214; FLJ52277; follistatin-like 1; Follistatin-like protein 1; Follistatin-related protein 1
Gene Aliases: FRP; FSL1; Fstl; FSTL1; MIR198; OCC-1; OCC1; tsc36
UniProt ID: (Human) Q12841, (Rat) Q62632
Entrez Gene ID: (Human) 11167, (Rat) 79210
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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