S100A4 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Aliases | S100A4 , 18A2, 42A, CAPL, FSP1, MTS1, P9KA, PEL98, S100 calcium binding protein A4 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 114210 MGI: 1330282 HomoloGene: 7924 GeneCards: S100A4 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Protein S100-A4 (S100A4) is a protein that in humans is encoded by the S100A4 gene. [5]
The protein encoded by this gene is a member of the S100 family of proteins containing 2 EF-hand calcium-binding motifs. S100 proteins are localized in the cytoplasm and/or nucleus of a wide range of cells, and involved in the regulation of a number of cellular processes such as cell cycle progression and differentiation. S100 genes include at least 13 members which are located as a cluster on chromosome 1q21. This protein may function in motility, invasion, and tubulin polymerization. Chromosomal rearrangements and altered expression of this gene have been implicated in tumor metastasis. Multiple alternatively spliced variants, encoding the same protein, have been identified. [6]
S100A4 has been shown to interact with S100 calcium binding protein A1. [7] [8]
S100A4, a member of the S100 calcium-binding protein family secreted by tumor and stromal cells, supports tumorigenesis by stimulating angiogenesis. Research demonstrated that S100A4 synergizes with vascular endothelial growth factor (VEGF), via the RAGE receptor, in promoting endothelial cell migration by increasing KDR expression and MMP-9 activity. In vivo overexpression of S100A4 led to a significant increase in tumor growth and vascularization in a human melanoma xenograft M21 model. Conversely, when silencing S100A4 by shRNA technology, a dramatic decrease in tumor development of the pancreatic MIA PaCa-2 cell line was observed. Based on these results 5C3 was developed, a neutralizing monoclonal antibody against S100A4. This antibody abolished endothelial cell migration, tumor growth and angiogenesis in immunodeficient mouse xenograft models of MiaPACA-2 and M21-S100A4 cells. It is concluded that extracellular S100A4 inhibition is an attractive approach for the treatment of human cancer. [9]
S100A4 is highly associated with components of the cytoskeleton and when this gene is upregulated, it changes the cell’s morphology, making it more susceptible to invasion from proteins, such as cathepsin B and cyclin B1, that contribute to metastasis. [10] Together, these factors form polyploid giant cancer cells (PGCCs), which are highly proliferative and invasive. Experimental knockout therapy data have suggested that S100A4 exhibits a form of control over cathepsin B and cyclin B1, and that suppressing it can reduce the invasive capabilities of PGCCs and their daughter cells. Studies on invasive breast cancer have found that S100A4 plays a major role in high-density collagen deposition, which is one of the clinical symptoms of tumor metastasis. Significantly higher levels of S100A4 were found in samples that exhibited lymph node metastasis than in those that didn’t, indicating that abnormal collagen deposition could be contributed to by S100A4. [11] Not only does overexpression of S100A4 contribute to the formation of various cancers, but it also contributes to pathological factors associated with cancer and its progression.
The S100 proteins are a family of low molecular-weight proteins found in vertebrates characterized by two calcium-binding sites that have helix-loop-helix ("EF-hand-type") conformation. At least 21 different S100 proteins are known. They are encoded by a family of genes whose symbols use the S100 prefix, for example, S100A1, S100A2, S100A3. They are also considered as damage-associated molecular pattern molecules (DAMPs), and knockdown of aryl hydrocarbon receptor downregulates the expression of S100 proteins in THP-1 cells.
S100 calcium-binding protein A7 (S100A7), also known as psoriasin, is a protein that in humans is encoded by the S100A7 gene.
S100 calcium-binding protein A2 (S100A2) is a protein that in humans is encoded by the S100A2 gene and it is located on chromosome 1q21 with other S100 proteins.
S100 calcium-binding protein A8 (S100A8) is a protein that in humans is encoded by the S100A8 gene. It is also known as calgranulin A.
S100 calcium-binding protein A9 (S100A9) also known as migration inhibitory factor-related protein 14 (MRP14) or calgranulin B is a protein that in humans is encoded by the S100A9 gene.
An Error has occurred retrieving Wikidata item for infobox Protein S100-A1, also known as S100 calcium-binding protein A1 is a protein which in humans is encoded by the S100A1 gene. S100A1 is highly expressed in cardiac and skeletal muscle, and localizes to Z-discs and sarcoplasmic reticulum. S100A1 has shown promise as an effective candidate for gene therapy to treat post-myocardially infarcted cardiac tissue.
S100 calcium-binding protein A6 (S100A6) is a protein that in humans is encoded by the S100A6 gene.
S100 calcium-binding protein A11 (S100A11) is a protein that in humans is encoded by the S100A11 gene.
S100 calcium-binding protein A12 (S100A12) is a protein that in humans is encoded by the S100A12 gene. Human S100A12, also known as calgranulin C, was first described in 1995.
Astrocytic phosphoprotein PEA-15 is a protein that in humans is encoded by the PEA15 gene.
S100 calcium-binding protein P (S100P) is a protein that in humans is encoded by the S100P gene.
S100 calcium-binding protein A13 (S100A13) is a protein that in humans is encoded by the S100A13 gene.
Ras Related Glycolysis Inhibitor and Calcium Channel Regulator (RRAD) is a protein that in humans is encoded by the RRAD gene. RRAD is a Ras-related small GTPase that is regulated by p53 and plays a role in the regulation of aerobic glycolysis.
S100 calcium-binding protein A3 (S100A3) is a protein that in humans is encoded by the S100A3 gene.
Chloride channel accessory 2 is a protein that in humans is encoded by the CLCA2 gene.
S100 calcium-binding protein A5 (S100A5) is a protein that in humans is encoded by the S100A5 gene.
Liprin-beta-1 is a protein that in humans is encoded by the PPFIBP1 gene.
Protein S100-A7A (S100A7A), also known as koebnerisin, is a protein that in humans is encoded by the S100A7A gene.
S100 calcium binding protein A14 (S100A14) is a protein that in humans is encoded by the S100A14 gene.
The S100 calcium-binding protein mS100a7a15 is the murine ortholog of human S100A7 (Psoriasin) and human S100A15 (Koebnerisin). mS100a7a15 is also known as S100a15, mS100a7 and mS100a7a and is encoded by the mS100a7a gene