Detects mouse TSG-6 in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 45% cross-reactivity with recombinant human TSG-6 is observed and less than 2% cross-reactivity with recombinant mouse TSG-14 is observed.
TSG‑6 in Mouse Splenocytes.
TSG‑6 was detected in immersion fixed mouse splenocytes using Goat Anti-Mouse TSG‑6 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2326) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
TSG-6 (TNF-stimulated gene 6; also named TNFIP6) is a secreted, 35‑39 kDa group A member of the LINK-Module superfamily of proteins (1‑4). Mouse TSG-6 is synthesized as a 275 amino acid (aa) precursor. It contains a 17 aa signal sequence and a 258 aa mature region (5, 6). The mature region has an N-terminal link module (aa 36‑129) and a C-terminal CUB (C1s/C1r; urchin embryonic growth factor; BMP1) domain (aa 135‑246). Link modules bind hyaluronan (HA) and participate in extracellular matrix (ECM) assembly (7). Mature mouse TSG-6 shares 97%, 94% and 94% aa identity with rat, human and canine TSG-6, respectively. Cells reported to express TGF-6 include activated fibroblasts, synoviocytes, chondrocytes, neutrophils, proximal tubular epithelium, bronchial epithelium, endothelium, and visceral plus vascular smooth muscle (2, 8). TSG-6 has multiple functions, many of which involve the ECM. It is suggested to stabilize HA‑rich ECM. It does so by serving as an intermediary, or as a link between the individual subunits of the extracellular decameric pentraxin 3 and the surrounding hyaluronan matrix (9). It also provides structure and organization to hyaluronan. This is accomplished by a TSG-6 mediated transfer of an 80‑85 kDa protein subunit from I alpha I (inter-alpha -inhibitor) to HA. I alpha I is a four-component, 225 kDa serine protease inhibitor. It contains a protease inhibitor subunit (bikunin), two independent, accompaning protein chains (HC1 and HC2), and a short chondroitin sulfate linking moiety. TSG-6 is a catalyst for the removal and transient binding of either HC chain. Each chain is subsequently transferred and covalently-linked to the surrounding HA. This provides substance and reinforcement to the ECM (1, 2, 10, 11, 12). This disassembly of I alpha I also leads to free bikunin, which in the “free” state becomes a potent inhibitor of serine proteases (8).
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Tumor Necrosis Factor-stimulated Gene Sequence 6
Entrez Gene IDs:
7130 (Human); 21930 (Mouse)
Hyaluronate-binding protein; TNF alpha-induced protein 6; TNFAIP6; TNF-stimulated gene 6 protein; TSG6; TSG-6; TSG-6tumor necrosis factor alpha-inducible protein 6; TSG6tumor necrosis factor-inducible gene 6 protein; Tumor necrosis factor alpha-induced protein 6; tumor necrosis factor, alpha-induced protein 6; tumor necrosis factor-stimulated gene-6 protein
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