Revision 4

#47507Store at -20C

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IF-IC, FC-FP

REACTIVITY:

H

SENSITIVITY:

Endogenous

MW (kDa):

32

Source/Isotype:

Rabbit IgG

UniProt ID:

#Q08830

Entrez-Gene Id:

2267

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunofluorescence (Immunocytochemistry) 1:200 - 1:800
Flow Cytometry (Fixed/Permeabilized) 1:50 - 1:200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, 50% glycerol, and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

FGL1 (E8V9Q) Rabbit mAb recognizes endogenous levels of total FGL1 protein. This antibody detects a faint cross-reactive band around 27 kDa of unknown identity in some cell extracts.

Species Reactivity:

Human

Source / Purification

Monoclonal antibody is produced by immunizing animals with recombinant human FGL1 protein.

Background

FGL1 (fibrinogen-like protein 1, also known as hepassocin) is a secreted protein mainly expressed in liver and its expression is further enhanced following acute liver injury (1-3). FGL1 mice have multiple metabolic abnormalities and are more prone to develop hepatocellular carcinoma under certain experimental conditions, suggesting FGL1 has diverse functions in vivo (4,5). More recently, FGL1 was found to be highly expressed in human cancer cells and function as an inhibitory ligand for LAG3. Blockade of the FGL1-LAG3 interaction stimulates tumor immunity in mouse models. In addition, a high plasma FGL1 level in human cancer patients is associated with a poor prognosis and resistance to anti-PD-1/PD-L1 immunotherapy (6).

  1. Hara, H. et al. (2001) Biochim Biophys Acta 1520, 45-53.
  2. Liu, Z. and Ukomadu, C. (2008) Biochem Biophys Res Commun 365, 729-34.
  3. Han, N.K. et al. (2019) Cells 8, pii: E1042. doi: 10.3390/cells8091042.
  4. Demchev, V. et al. (2013) PLoS One 8, e58084.
  5. Nayeb-Hashemi, H. et al. (2015) Biochem Biophys Res Commun 465, 167-73.
  6. Wang, J. et al. (2019) Cell 176, 334-47.e12.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized)

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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