Chromogranin A / CHGA (Neuroendocrine Marker) [CHGA/777]

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Summary

Chromogranin A is present in neuroendocrine cells throughout the body, including the neuroendocrine cells of the large and small intestine, adrenal medulla and pancreatic islets. It is an excellent marker for carcinoid tumors, pheochromocytomas, paragangliomas, and other neuroendocrine tumors. Co-expression of chromogranin A and neuron specific enolase (NSE) is common in neuroendocrine neoplasms. Reportedly, co-expression of certain keratins and chromogranin indicates neuroendocrine lineage. The presence of strong anti-chromogranin staining and absence of anti-keratin staining should raise the possibility of paraganglioma. The co-expression of chromogranin and NSE is typical of neuroendocrine neoplasms. Most pituitary adenomas and prolactinomas readily express chromogranin A.

Product Properties & Targets

Host
Species Reactivity
Research Areas
Isotype
Cellular Localization
Finely granular cytoplasmic
Gene Name
Positive Control
bowel|pancreas or pheochromocytoma.|PC12 cells. Adrenal gland|thyroid
Immunogen
Recombinant human CHGA protein
Alternate Names
Chromogranin-A | Vasostatin-1 | Vasostatin-2 | EA-92 | ES-43 | Pancreastatin | SS-18 | WA-8 | WE-14 | LF-19 | Catestatin | AL-11 | GV-19 | GR-44 | ER-37 | GE-25 | Serpinin-RRG | Serpinin | p-Glu serpinin precursor, Pituitary secretory protein I, Vasostatin I, Vasostatin II, SL21, Beta-Granin; CGA; CHGA; Chromogranin A Parathyroid Secretory Protein 1; ER-37; Pancreastatin; Parastatin; Pituitary Secretory Protein I; SP-I; Vasostatin I or II

Database Links

Entrez Gene ID
Unigene
SwissProt

Additional Information

Clone
CHGA/777
Human Gene Symbol
CHGA
Chromosome Location
14q32.12
Mol. Weight of Antigen
68-75kDa

Functions

  • Strongly inhibits glucose induced insulin release from the pancreas.
  • Inhibits catecholamine release from chromaffin cells and noradrenergic neurons by acting as a non-competitive nicotinic cholinergic antagonist (PubMed:15326220). Displays antibacterial activity against Gram-positive bacteria S.aureus and M.luteus, and Gram-negative bacteria E.coli and P.aeruginosa (PubMed:15723172, PubMed:24723458). Can induce mast cell migration, degranulation and production of cytokines and chemokines (PubMed:21214543). Acts as a potent scavenger of free radicals in vitro (PubMed:24723458). May play a role in the regulation of cardiac function and blood pressure (PubMed:18541522).
  • Regulates granule biogenesis in endocrine cells by up-regulating the transcription of protease nexin 1 (SERPINE2) via a cAMP-PKA-SP1 pathway. This leads to inhibition of granule protein degradation in the Golgi complex which in turn promotes granule formation.

Known Applications & Suggested Dilutions

  • Flow Cytometry (5ul per test per one million cells or 5ul per 100ul of whole blood);Immunofluorescence (1:50-1:100);Optimal dilution for a specific application should be determined.

Key References

  • Schmid, K.W., et al. 1993. Chromogranin A, secretogranin II and vasoactive intestinal peptide in phaeochromocytomas and ganglioneuromas. Histopathology 22: 527-533.

Storage & Stability

Antibody with azide - store at 4 to 8°C. Antibody is stable for 24 months. Non-hazardous. No MSDS required.

Limitations

This antibody is available for research use only and is not approved for use in diagnosis.

Supplied as

Antibody Purified from Bioreactor Concentrate by Protein A/G and conjugated to various reporter molecules. Prepared in 10mM PBS with 0.05% BSA and 0.05% azide. Contact us if you require this Ab in a different format.

Warranty

There are no warranties, expressed or implied, which extend beyond this description. Company is not liable for any personal injury or economic loss resulting from this product.

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