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Product Usage Information

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

Specificity / Sensitivity

OTX2 Antibody recognizes endogenous levels of total OTX2 protein.

Species predicted to react based on 100% sequence homology: Mouse, Rat, Monkey, Chicken, Dog, Guinea Pig, Horse

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asn251 of human OTX2 protein. Antibodies are purified by protein A and peptide affinity chromatography.

Orthodenticle homeobox 2 (OTX2) belongs to the bicoid subfamily of paired-box, homeodomain-containing transcription factors. OTX2 is a critically important neuronal transcription factor that functions to regulate the expression of cell cycle genes controlling proliferation and differentiation of neural progenitor cells (1-3). In addition to its neuronal development functions, it has been reported that OTX2 can function in a non-cell autonomous manner to promote survival of damaged retinal ganglion cells (4). OTX2 has also been shown to influence the susceptibility of post-mitotic neurons to toxic insult or physiological stress (3). Notably, aberrant expression of OTX2 has been strongly linked with neuronal tumor development. For example, research studies have found OTX2 is overexpressed in many medulloblastoma cell lines, and both overexpression and gene amplification were reported in a subset of primary medulloblastomas (5). In vitro studies support these observations, as targeted alterations in OTX2 expression directly affected both proliferation and senescence of medulloblastoma cell lines (6,7).

1.  Simeone, A. et al. (1993) EMBO J 12, 2735-47.

2.  Omodei, D. et al. (2008) Development 135, 3459-70.

3.  Chung, C.Y. et al. (2010) Brain 133, 2022-31.

4.  Torero Ibad, R. et al. (2011) J Neurosci 31, 5495-503.

5.  Adamson, D.C. et al. (2010) Cancer Res 70, 181-91.

6.  Bunt, J. et al. (2011) Int J Cancer 131, E21-32.

7.  Bunt, J. et al. (2010) Mol Cancer Res 8, 1344-57.

Entrez-Gene Id 5015
Swiss-Prot Acc. P32243

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

OTX2 Antibody