Wikipedia

CCL4

For carbon tetrachloride, chemical formula CCl4, see Carbon tetrachloride.

Chemokine (C-C motif) ligands 4 (also CCL4) previously known as macrophage inflammatory protein (MIP-1β), is a protein which in humans is encoded by the CCL4 gene.[2] CCL4 belongs to a cluster of genes located on 17q11-q21 of the chromosomal region.[3] Identification and localization of the gene on the chromosome 17 was in 1990 although the discovery of MIP-1 was initiated in 1988 with the purification of a protein doublet corresponding to inflammatory activity from supernatant of endotoxin-stimulated murine macrophages. At that time, it was also named as "macrophage inflammatory protein-1" (MIP-1) due to its inflammatory properties.[4]

CCL4L1
Available structures
PDBHuman UniProt search: PDBe RCSB
Identifiers
AliasesCCL4L1, AT744.2, CCL4L, LAG-1, LAG1, SCYA4L, SCYA4L1, MIP-1-beta, SCYA4L2, C-C motif chemokine ligand 4 like 1
External IDsOMIM: 603782 GeneCards: CCL4L1
Orthologs
SpeciesHumanMouse
Entrez

388372

n/a

Ensembl

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UniProt

Q8NHW4
P13236

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RefSeq (mRNA)

NM_207007

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RefSeq (protein)

NP_996890
NP_002975

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Location (UCSC)n/an/a
PubMed search[1]n/a
Wikidata
View/Edit Human

CCL4 is a small cytokine that belongs to the CC chemokine subfamily. CCL4 is being secreted under mitogenic signals and antigens and hereby acts as a chemoattractant for natural killer cells, monocytes and various other immune cells in the site of inflamed or damaged tissue.[5]

Genomics edit

In the human genome, CCL4 and many other CC chemokines is encoded by a single gene on chromosome 17 (17q11-q21). The CCL4 gene consists of three exons and two introns which are separated by 14 kb and are organized in a head to head fashion. MIP-1 genes have 3 untranslated gene regions containing a polyadenylation site (AATAAA) and several AT-rich sequences.[6] The CCL4 protein precursor consist of 92 amino acids. In turn, the mature CCL4 protein is 92 amino acids long. The CCL4 predicted Mr weight is 7814.8 Da with no apparent N-linked glycosylation site as in other of the MIP-1 proteins.[7][8][9]

 
Structure of the CCL4 protein.

Molecular structure edit

CCL4 is a polypeptide chain with a molecular weight of approximately 8-10 kDa[10] arranged in a three-dimensional structure in the form of as symmetrical homodimer.

Monomeric subunits in their secondary structure composed by a triple-stranded antiparallel sheet form in a Greek key structure on top of which lies an α-helix. NH2-terminus is arranged as a long loop followed by a four-residue helical turn. The overall form of homodimer is globular elongated and cylindrical with sizes: 56 Å × 30 Å × 26 Å in contrast of monomer structure which is similar to IL-8.[10][11]

CCL4 as well as other MIP-1s whether human or mouse have a high tendency to self-aggregation. Aggregation as a reversible and dynamic process depends largely on the concentration of chemokine.[12]

The distinction between the CC chemokine families, MIP-1α and MIP-1β, was initially based on whether the first two cysteine residues are separated by one residue (α) or are adjacent (β).[10] Final form of tertiary structure structure of MIP-1 has been defined by heteronuclear magnetic resonance (NMR) analysis.

Concentration of this chemokine has been shown to be inversely related with MicroRNA-125b. Concentration of CCL4 within the body increases with age, which may cause chronic inflammation and liver damage.[13][14]

Function edit

CCL4 as a chemokine which is produced during inflammation, damage or other important dynamic processes as an angiogenesis to attract immune cells as leukocytes transgress the vascular endothelium and migrate into peripheral tissues.

Production of CCL4

CCL4 is produced by: monocytes, B cells, T cells, NK cells, dendritic cells, neutrophils, fibroblasts, endothelial cells such as vascular smooth muscle cells, brain microvessel endothelial cells, fetal microglia and epithelial cells.

  • Monocytes produce high amounts of CCL4 when they are stimulated with LPS or IL-7 and production is suppressed by IL-4.[15]
  • T cells and B cells secrete CCL4 response to Ag receptor (BCR) triggering.[16]
  • NK cells produce CCL4 in response to stimulation with IL-2, physiological activation signals such as lysis. NK cells can be important source of CC chemokines and may suppress HIV infection by inhibition replication of HIV-1 virus by interfering with the ability to utilize CCR5 as a coreceptor for entry in CD4(+) cells.[17]
  • Dendritic cells secrete and respond to chemokines after stimulation to LPS, TNFα, or CD40 ligand. In maturing of DC production of chemokines have different impact on chemokine receptor function: CCR1 and CCR5 were down-regulated whereas CCR7 were stimulated increased in maturing DC. Production of chemokines provides DC with the capacity to self-regulate their migratory behavior as well as to recruit other cells.[18]
  • Neutrophils produce CCL4 in the presence of IFN-gamma and its inhibition by IL-10.[19]
  • Endothelial cells release CCL4 following stimulation with LPS, TNFα, IFN-, or IL-1.[20]

CCL4 is a major HIV-suppressive factor produced by CD8+ T cells.[21]

Perforin-low memory CD8+ T cells that normally synthesize MIP-1-beta.[22]

CCL4 is produced by: neutrophils, monocytes, B cells, T cells, fibroblasts, endothelial cells, and epithelial cells.[13]

Interactions edit

CCL4 has been shown to interact with CCL3.[23]

CCL4 binds to G protein-Coupled Receptors CCR5 and CCR8.[13]

See also edit

References edit

  1. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  2. ^ Irving SG, Zipfel PF, Balke J, McBride OW, Morton CC, Burd PR, et al. (June 1990). "Two inflammatory mediator cytokine genes are closely linked and variably amplified on chromosome 17q". Nucleic Acids Research. 18 (11): 3261–3270. doi:10.1093/nar/18.11.3261. PMC 330932. PMID 1972563.
  3. ^ Hu GN, Tzeng HE, Chen PC, Wang CQ, Zhao YM, Wang Y, et al. (2018). "Correlation between CCL4 gene polymorphisms and clinical aspects of breast cancer". International Journal of Medical Sciences. 15 (11): 1179–1186. doi:10.7150/ijms.26771. PMC 6097259. PMID 30123055.
  4. ^ Wolpe SD, Davatelis G, Sherry B, Beutler B, Hesse DG, Nguyen HT, et al. (February 1988). "Macrophages secrete a novel heparin-binding protein with inflammatory and neutrophil chemokinetic properties". The Journal of Experimental Medicine. 167 (2): 570–581. doi:10.1084/jem.167.2.570. PMC 2188834. PMID 3279154.
  5. ^ Menten P, Wuyts A, Van Damme J (December 2002). "Macrophage inflammatory protein-1". Cytokine & Growth Factor Reviews. 13 (6): 455–481. doi:10.1016/s1359-6101(02)00045-x. PMID 12401480.
  6. ^ Menten P, Wuyts A, Van Damme J (December 2002). "Macrophage inflammatory protein-1". Cytokine & Growth Factor Reviews. 13 (6): 455–481. doi:10.1016/S1359-6101(02)00045-X. PMID 12401480.
  7. ^ Hirashima M, Ono T, Nakao M, Nishi H, Kimura A, Nomiyama H, et al. (January 1992). "Nucleotide sequence of the third cytokine LD78 gene and mapping of all three LD78 gene loci to human chromosome 17". DNA Sequence. 3 (4): 203–212. doi:10.3109/10425179209034019. PMID 1296815.
  8. ^ Lipes MA, Napolitano M, Jeang KT, Chang NT, Leonard WJ (December 1988). "Identification, cloning, and characterization of an immune activation gene". Proceedings of the National Academy of Sciences of the United States of America. 85 (24): 9704–9708. Bibcode:1988PNAS...85.9704L. doi:10.1073/pnas.85.24.9704. PMC 282843. PMID 2462251.
  9. ^ Koopmann W, Krangel MS (April 1997). "Identification of a glycosaminoglycan-binding site in chemokine macrophage inflammatory protein-1alpha". The Journal of Biological Chemistry. 272 (15): 10103–10109. doi:10.1074/jbc.272.15.10103. PMID 9092555.
  10. ^ a b c Lodi PJ, Garrett DS, Kuszewski J, Tsang ML, Weatherbee JA, Leonard WJ, et al. (March 1994). "High-resolution solution structure of the beta chemokine hMIP-1 beta by multidimensional NMR". Science. 263 (5154): 1762–1767. Bibcode:1994Sci...263.1762L. doi:10.1126/science.8134838. PMID 8134838.
  11. ^ Czaplewski LG, McKeating J, Craven CJ, Higgins LD, Appay V, Brown A, et al. (June 1999). "Identification of amino acid residues critical for aggregation of human CC chemokines macrophage inflammatory protein (MIP)-1alpha, MIP-1beta, and RANTES. Characterization of active disaggregated chemokine variants". The Journal of Biological Chemistry. 274 (23): 16077–16084. doi:10.1074/jbc.274.23.16077. PMID 10347159.
  12. ^ Nibbs RJ, Graham GJ, Pragnell IB (1998). "Macrophage Inflammatory Protein 1-α". Cytokines. Elsevier. pp. 467–488.
  13. ^ a b c Cheng NL, Chen X, Kim J, Shi AH, Nguyen C, Wersto R, Weng NP (April 2015). "MicroRNA-125b modulates inflammatory chemokine CCL4 expression in immune cells and its reduction causes CCL4 increase with age". Aging Cell. 14 (2): 200–208. doi:10.1111/acel.12294. PMC 4364832. PMID 25620312.
  14. ^ Morimoto T, Takagi H, Kondo T (January 1985). "Canine pancreatic allotransplantation with duodenum (pancreaticoduodenal transplantation) using cyclosporin A". Nagoya Journal of Medical Science. 47 (1–2): 57–66. PMID 3887178.
  15. ^ Weinberg JB, Mason SN, Wortham TS (June 1992). "Inhibition of tumor necrosis factor-alpha (TNF-alpha) and interleukin-1 beta (IL-1 beta) messenger RNA (mRNA) expression in HL-60 leukemia cells by pentoxifylline and dexamethasone: dissociation of acivicin-induced TNF-alpha and IL-1 beta mRNA expression from acivicin-induced monocytoid differentiation". Blood. 79 (12): 3337–3343. doi:10.1182/blood.v79.12.3337.3337. PMID 1596574.
  16. ^ Krzysiek R, Lefevre EA, Bernard J, Foussat A, Galanaud P, Louache F, Richard Y (October 2000). "Regulation of CCR6 chemokine receptor expression and responsiveness to macrophage inflammatory protein-3alpha/CCL20 in human B cells". Blood. 96 (7): 2338–2345. doi:10.1182/blood.v96.7.2338.h8002338_2338_2345. PMID 11001880.
  17. ^ Oliva A, Kinter AL, Vaccarezza M, Rubbert A, Catanzaro A, Moir S, et al. (July 1998). "Natural killer cells from human immunodeficiency virus (HIV)-infected individuals are an important source of CC-chemokines and suppress HIV-1 entry and replication in vitro". The Journal of Clinical Investigation. 102 (1): 223–231. doi:10.1172/jci2323. PMC 509084. PMID 9649576.
  18. ^ Sallusto F, Palermo B, Lenig D, Miettinen M, Matikainen S, Julkunen I, et al. (May 1999). "Distinct patterns and kinetics of chemokine production regulate dendritic cell function". European Journal of Immunology. 29 (5): 1617–1625. doi:10.1002/(sici)1521-4141(199905)29:05<1617::aid-immu1617>3.0.co;2-3. PMID 10359116. S2CID 13766954.
  19. ^ Lapinet JA, Scapini P, Calzetti F, Pérez O, Cassatella MA (December 2000). "Gene expression and production of tumor necrosis factor alpha, interleukin-1beta (IL-1beta), IL-8, macrophage inflammatory protein 1alpha (MIP-1alpha), MIP-1beta, and gamma interferon-inducible protein 10 by human neutrophils stimulated with group B meningococcal outer membrane vesicles". Infection and Immunity. 68 (12): 6917–6923. doi:10.1128/iai.68.12.6917-6923.2000. PMC 97799. PMID 11083814.
  20. ^ Shukaliak JA, Dorovini-Zis K (May 2000). "Expression of the beta-chemokines RANTES and MIP-1 beta by human brain microvessel endothelial cells in primary culture". Journal of Neuropathology and Experimental Neurology. 59 (5): 339–352. doi:10.1093/jnen/59.5.339. PMID 10888363.
  21. ^ Cocchi F, DeVico AL, Garzino-Demo A, Arya SK, Gallo RC, Lusso P (December 1995). "Identification of RANTES, MIP-1 alpha, and MIP-1 beta as the major HIV-suppressive factors produced by CD8+ T cells". Science. 270 (5243): 1811–1815. Bibcode:1995Sci...270.1811C. doi:10.1126/science.270.5243.1811. PMID 8525373. S2CID 84062618.
  22. ^ Kamin-Lewis R, Abdelwahab SF, Trang C, Baker A, DeVico AL, Gallo RC, Lewis GK (July 2001). "Perforin-low memory CD8+ cells are the predominant T cells in normal humans that synthesize the beta -chemokine macrophage inflammatory protein-1beta". Proceedings of the National Academy of Sciences of the United States of America. 98 (16): 9283–9288. Bibcode:2001PNAS...98.9283K. doi:10.1073/pnas.161298998. PMC 55412. PMID 11470920.
  23. ^ Guan E, Wang J, Norcross MA (April 2001). "Identification of human macrophage inflammatory proteins 1alpha and 1beta as a native secreted heterodimer". The Journal of Biological Chemistry. 276 (15): 12404–12409. doi:10.1074/jbc.M006327200. PMID 11278300.

Further reading edit

External links edit

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