The Evolution of Complement System Functions and Pathways in Vertebrates

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

An evolutionarily ancestral complement system is considered to be an opsonic system that seems to be a combination of the lectin and alternative pathways known in mammalian complement. The ancestral system is equipped with lectin-like pattern-recognition molecules linked with specific proteases homologous to the mannose-binding lectin-associated serine protease (MASP) and factor B, which cleave C3 into physiologically active forms with inflammatory and opsonic functions, as seen in primitive invertebrate species. In vertebrates, two rounds of whole-genome duplication allowed the occurrence of two additional reaction cascades, the classical and lytic pathways, providing jawed vertebrates with much more specific and efficient ability of pathogen elimination. A trace of molecular and functional evidence that represents a transient status from invertebrate prototypic complement to a full equipped system can be found in extant jawless species such as lamprey. A striking diversity of complement component isoforms unique to teleost fish is also discussed in evolutionary and functional points of view.

Original languageEnglish
Title of host publicationThe Evolution of the Immune System
Subtitle of host publicationConservation and Diversification
PublisherElsevier Inc.
Pages151-171
Number of pages21
ISBN (Electronic)9780128020135
ISBN (Print)9780128019757
DOIs
Publication statusPublished - May 20 2016

Fingerprint

Invertebrates
Lectins
Vertebrates
Mannose-Binding Lectin
Lampreys
Serine Proteases
Protein Isoforms
Fishes
Peptide Hydrolases
Genome

All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Immunology and Microbiology(all)

Cite this

Nakao, M., & Somamoto, T. (2016). The Evolution of Complement System Functions and Pathways in Vertebrates. In The Evolution of the Immune System: Conservation and Diversification (pp. 151-171). Elsevier Inc.. https://doi.org/10.1016/B978-0-12-801975-7.00006-2

The Evolution of Complement System Functions and Pathways in Vertebrates. / Nakao, Miki; Somamoto, Tomonori.

The Evolution of the Immune System: Conservation and Diversification. Elsevier Inc., 2016. p. 151-171.

Research output: Chapter in Book/Report/Conference proceedingChapter

Nakao, M & Somamoto, T 2016, The Evolution of Complement System Functions and Pathways in Vertebrates. in The Evolution of the Immune System: Conservation and Diversification. Elsevier Inc., pp. 151-171. https://doi.org/10.1016/B978-0-12-801975-7.00006-2
Nakao M, Somamoto T. The Evolution of Complement System Functions and Pathways in Vertebrates. In The Evolution of the Immune System: Conservation and Diversification. Elsevier Inc. 2016. p. 151-171 https://doi.org/10.1016/B978-0-12-801975-7.00006-2
Nakao, Miki ; Somamoto, Tomonori. / The Evolution of Complement System Functions and Pathways in Vertebrates. The Evolution of the Immune System: Conservation and Diversification. Elsevier Inc., 2016. pp. 151-171
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