S100A12

S100 calcium-binding protein A12 (S100A12) is a protein that in humans is encoded by the S100A12 gene.[3][4] Human S100A12, also known as calgranulin C, was first described in 1995.[5]

S100A12
Available structures
PDBHuman UniProt search: PDBe RCSB
Identifiers
AliasesS100A12, CAAF1, CAGC, CGRP, ENRAGE, MRP-6, MRP6, p6, S100 calcium binding protein A12, EN-RAGE
External IDsOMIM: 603112 HomoloGene: 48361 GeneCards: S100A12
Gene location (Human)
Chr.Chromosome 1 (human)[1]
Band1q21.3Start153,373,711 bp[1]
End153,375,621 bp[1]
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

6283

n/a

Ensembl

ENSG00000163221

n/a

UniProt

P80511

n/a

RefSeq (mRNA)

NM_005621

n/a

RefSeq (protein)

NP_005612

n/a

Location (UCSC)Chr 1: 153.37 – 153.38 Mbn/a
PubMed search[2]n/a
Wikidata
View/Edit Human

The protein encoded by this gene is a member of the S100 family of proteins containing 2 EF-hand calcium-binding motifs.

Function

Generally, S100A12 has a significant anti-infectious and antibacterial role that is related to its ability to uptake ions. For example, it inhibits the spread and virulence of H. pylori.[6][7]

Tissue distribution

Neutrophils and monocytes / macrophages are important source of S100A12 in the cell[8] although some epithelial cells and dendritic cells are capable of its secretion.[9] Some tissues are rich in these cells, and so in this protein. These include the spleen or lungs. It occurs intracellularly but is also produced into extracellular environment where it plays a major role. It occurs in the extracellular environment as homodimer or hexamer.[10]

Clinical significance

Its presence is associated with cardiovascular and kidney diseases.[10] Like other S100 proteins, S100A12 signals through the RAGE receptor and TLR. In general, this signalling leads to cytokine production, chemotaxis and increased oxidative stress. In endothelial cells, this signaling leads to activation of NFκB, under which the production of adhesion molecules such as ICAMs, VCAM or selectins is increased.[10] This protein is proposed to be involved in specific calcium-dependent signal transduction pathways and its regulatory effect on cytoskeletal components may modulate various neutrophil activities.[4]

Cascades that are triggered by interaction of S100A12 with RAGE may play an important role in renal failure in hemodialysis patients. The relationship between S100A12 and renal dialysis mortality rates has been repeatedly reported. S100A12 may play a role in monitoring SLE patients as a marker of kidney damage in glomerulonephritis.[11][12] It is also associated with gastrointestinal diseases. In inflammatory bowel diseases, it significantly correlates with disease activity and, together with other 100S family proteins, can predict disease relapse.[13][14]

References
  1. GRCh38: Ensembl release 89: ENSG00000163221 - Ensembl, May 2017
  2. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. Wicki R, Marenholz I, Mischke D, Schäfer BW, Heizmann CW (December 1996). "Characterization of the human S100A12 (calgranulin C, p6, CAAF1, CGRP) gene, a new member of the S100 gene cluster on chromosome 1q21". Cell Calcium. 20 (6): 459–64. doi:10.1016/S0143-4160(96)90087-1. PMID 8985590.
  4. "Entrez Gene: S100A12 S100 calcium binding protein A12".
  5. Wicki R, Marenholz I, Mischke D, Schäfer BW, Heizmann CW (December 1996). "Characterization of the human S100A12 (calgranulin C, p6, CAAF1, CGRP) gene, a new member of the S100 gene cluster on chromosome 1q21". Cell Calcium. 20 (6): 459–64. doi:10.1016/S0143-4160(96)90087-1. PMID 8985590.
  6. Yang Z, Yan WX, Cai H, Tedla N, Armishaw C, Di Girolamo N, et al. (January 2007). "S100A12 provokes mast cell activation: a potential amplification pathway in asthma and innate immunity". The Journal of Allergy and Clinical Immunology. 119 (1): 106–14. doi:10.1016/j.jaci.2006.08.021. PMID 17208591.
  7. Li D, Zeng Z, Yu T, Qin J, Wu J, Song JC, et al. (May 2016). "Expression and clinical implication of S100A12 in gastric carcinoma". Tumour Biology. 37 (5): 6551–9. doi:10.1007/s13277-015-4460-5. PMID 26638166.
  8. Khorramdelazad H, Bagheri V, Hassanshahi G, Karami H, Moogooei M, Zeinali M, Abedinzadeh M (2015-04-14). "S100A12 and RAGE expression in human bladder transitional cell carcinoma: a role for the ligand/RAGE axis in tumor progression?". Asian Pacific Journal of Cancer Prevention. 16 (7): 2725–9. doi:10.7314/APJCP.2015.16.7.2725. PMID 25854354.
  9. Bagheri V, Hassanshahi G, Zeinali M, Abedinzadeh M, Khorramdelazad H (March 2016). "Elevated levels of S100A12 in the seminal plasma of infertile men with varicocele". International Urology and Nephrology. 48 (3): 343–7. doi:10.1007/s11255-015-1188-5. PMID 26725070.
  10. Nazari A, Khorramdelazad H, Hassanshahi G, Day AS, Sardoo AM, Fard ET, et al. (December 2017). "S100A12 in renal and cardiovascular diseases". Life Sciences. 191: 253–258. doi:10.1016/j.lfs.2017.10.036. PMID 29080693.
  11. Shiotsu Y, Mori Y, Nishimura M, Hatta T, Imada N, Maki N, et al. (January 2013). "Prognostic utility of plasma S100A12 levels to establish a novel scoring system for predicting mortality in maintenance hemodialysis patients: a two-year prospective observational study in Japan". BMC Nephrology. 14 (1): 16. doi:10.1186/1471-2369-14-16. PMC 3552940. PMID 23324110.
  12. Tydén H, Lood C, Gullstrand B, Jönsen A, Ivars F, Leanderson T, Bengtsson AA (February 2017). "Pro-inflammatory S100 proteins are associated with glomerulonephritis and anti-dsDNA antibodies in systemic lupus erythematosus". Lupus. 26 (2): 139–149. doi:10.1177/0961203316655208. PMID 27407135.
  13. Foell D, Kucharzik T, Kraft M, Vogl T, Sorg C, Domschke W, Roth J (June 2003). "Neutrophil derived human S100A12 (EN-RAGE) is strongly expressed during chronic active inflammatory bowel disease". Gut. 52 (6): 847–53. doi:10.1136/gut.52.6.847. PMC 1773692. PMID 12740341.
  14. Wright EK, De Cruz P, Gearry R, Day AS, Kamm MA (September 2014). "Fecal biomarkers in the diagnosis and monitoring of Crohn's disease". Inflammatory Bowel Diseases. 20 (9): 1668–77. doi:10.1097/MIB.0000000000000087. PMID 24918319.

Further reading
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