WB
M
Endogenous
85-90, 70
Rabbit
#Q3UZZ4
380924
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
Storage
Specificity / Sensitivity
Species Reactivity:
Mouse
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ala85 of mouse Olfm4 protein. Antibodies are purified by protein A and peptide affinity chromatography.
Background
Olfactomedin-4 (OLFM4, hGC-1) is a member of the Olfactomedin family, a small group of extracellular proteins defined by the presence of a conserved "Olfactomedin domain" that is thought to facilitate protein-protein interactions (1). OLFM4 is a secreted glycoprotein, which forms disulfide bond-mediated oligomers, and is thought to mediate cell adhesion through its interactions with extracellular matrix proteins such as lectins (2). Human OLFM4 was first cloned from myeloid cells (3) and is expressed in a distinct subset of neutrophils, though the functional significance of this differential expression pattern remains unclear (4). Among normal tissues, the expression of OLFM4 protein is most abundant in intestinal crypts (5), where it has garnered attention as a possible marker of intestinal stem cells (6). Notably, OLFM4 expression is markedly increased in several tumor types, including colorectal, gastric, pancreas, lung, and breast (reviewed in [1]). Furthermore, research studies show that the expression levels of OLFM4 vary in relation to the severity and/or differentiation status of multiple tumor types (1, 6-8), leading to the suggestion that OLFM4 may have utility as a prognostic marker in some cancer patients (9).
Genetic analyses of murine LGR5 stem cells identified Olfm4 as a robust intestinal stem cell marker, but unlike its human homolog, mouse Olfm4 expression is not detected in colonic epithelial crypts (10).
- Yu, L. et al. (2011) Neoplasma 58, 9-13.
- Liu, W. et al. (2006) Exp Cell Res 312, 1785-97.
- Zhang, J. et al. (2002) Gene 283, 83-93.
- Welin, A. et al. (2013) PLoS One 8, e69575.
- van der Flier, L.G. et al. (2009) Gastroenterology 137, 15-7.
- Liu, W. et al. (2007) Histopathology 51, 157-65.
- Liu, W. et al. (2008) Clin Cancer Res 14, 1041-9.
- Besson, D. et al. (2011) Mol Cell Proteomics 10, M111.009712.
- Seko, N. et al. (2010) Exp Ther Med 1, 73-8.
- van der Flier, L.G. et al. (2009) Cell 136, 903-12.
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
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
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