Evolutionary divergence and functions of the human interleukin (IL) gene family
<p>Abstract</p> <p>Cytokines play a very important role in nearly all aspects of inflammation and immunity. The term 'interleukin' (IL) has been used to describe a group of cytokines with complex immunomodulatory functions -- including cell proliferation, maturation, migr...
| Main Authors: | , , , , |
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| Format: | Article |
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BMC
2010-10-01
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| Series: | Human Genomics |
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| Online Access: | http://www.humgenomics.com/content/5/1/30 |
| _version_ | 1828393030327992320 |
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| author | Brocker Chad Thompson David Matsumoto Akiko Nebert Daniel W Vasiliou Vasilis |
| author_facet | Brocker Chad Thompson David Matsumoto Akiko Nebert Daniel W Vasiliou Vasilis |
| author_sort | Brocker Chad |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Cytokines play a very important role in nearly all aspects of inflammation and immunity. The term 'interleukin' (IL) has been used to describe a group of cytokines with complex immunomodulatory functions -- including cell proliferation, maturation, migration and adhesion. These cytokines also play an important role in immune cell differentiation and activation. Determining the exact function of a particular cytokine is complicated by the influence of the producing cell type, the responding cell type and the phase of the immune response. ILs can also have pro- and anti-inflammatory effects, further complicating their characterisation. These molecules are under constant pressure to evolve due to continual competition between the host's immune system and infecting organisms; as such, ILs have undergone significant evolution. This has resulted in little amino acid conservation between orthologous proteins, which further complicates the gene family organisation. Within the literature there are a number of overlapping nomenclature and classification systems derived from biological function, receptor-binding properties and originating cell type. Determining evolutionary relationships between ILs therefore can be confusing. More recently, crystallographic data and the identification of common structural motifs have led to a more accurate classification system. To date, the known ILs can be divided into four major groups based on distinguishing structural features. These groups include the genes encoding the IL1-like cytokines, the class I helical cytokines (IL4-like, <it>γ</it>-chain and IL6/12-like), the class II helical cytokines (IL10-like and IL28-like) and the IL17-like cytokines. In addition, there are a number of ILs that do not fit into any of the above groups, due either to their unique structural features or lack of structural information. This suggests that the gene family organisation may be subject to further change in the near future.</p> |
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| institution | Directory Open Access Journal |
| issn | 1479-7364 |
| language | English |
| last_indexed | 2024-12-10T07:30:45Z |
| publishDate | 2010-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Human Genomics |
| spelling | doaj.art-7af7c6b411e544c3855bc1e992326ee92022-12-22T01:57:34ZengBMCHuman Genomics1479-73642010-10-0151305510.1186/1479-7364-5-1-30Evolutionary divergence and functions of the human interleukin (IL) gene familyBrocker ChadThompson DavidMatsumoto AkikoNebert Daniel WVasiliou Vasilis<p>Abstract</p> <p>Cytokines play a very important role in nearly all aspects of inflammation and immunity. The term 'interleukin' (IL) has been used to describe a group of cytokines with complex immunomodulatory functions -- including cell proliferation, maturation, migration and adhesion. These cytokines also play an important role in immune cell differentiation and activation. Determining the exact function of a particular cytokine is complicated by the influence of the producing cell type, the responding cell type and the phase of the immune response. ILs can also have pro- and anti-inflammatory effects, further complicating their characterisation. These molecules are under constant pressure to evolve due to continual competition between the host's immune system and infecting organisms; as such, ILs have undergone significant evolution. This has resulted in little amino acid conservation between orthologous proteins, which further complicates the gene family organisation. Within the literature there are a number of overlapping nomenclature and classification systems derived from biological function, receptor-binding properties and originating cell type. Determining evolutionary relationships between ILs therefore can be confusing. More recently, crystallographic data and the identification of common structural motifs have led to a more accurate classification system. To date, the known ILs can be divided into four major groups based on distinguishing structural features. These groups include the genes encoding the IL1-like cytokines, the class I helical cytokines (IL4-like, <it>γ</it>-chain and IL6/12-like), the class II helical cytokines (IL10-like and IL28-like) and the IL17-like cytokines. In addition, there are a number of ILs that do not fit into any of the above groups, due either to their unique structural features or lack of structural information. This suggests that the gene family organisation may be subject to further change in the near future.</p>http://www.humgenomics.com/content/5/1/30ILinterleukincytokinegene familyevolutionhuman genome |
| spellingShingle | Brocker Chad Thompson David Matsumoto Akiko Nebert Daniel W Vasiliou Vasilis Evolutionary divergence and functions of the human interleukin (IL) gene family Human Genomics IL interleukin cytokine gene family evolution human genome |
| title | Evolutionary divergence and functions of the human interleukin (IL) gene family |
| title_full | Evolutionary divergence and functions of the human interleukin (IL) gene family |
| title_fullStr | Evolutionary divergence and functions of the human interleukin (IL) gene family |
| title_full_unstemmed | Evolutionary divergence and functions of the human interleukin (IL) gene family |
| title_short | Evolutionary divergence and functions of the human interleukin (IL) gene family |
| title_sort | evolutionary divergence and functions of the human interleukin il gene family |
| topic | IL interleukin cytokine gene family evolution human genome |
| url | http://www.humgenomics.com/content/5/1/30 |
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