Cited by 203Genetic and Kidney Cyst DiseasesCystic Fibrosis Research AdvancesMicrotubule and mitosis dynamics

Intraflagellar transport: mechanisms of motor action, cooperation, and cargo delivery

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Prevo, Bram, Scholey, Jonathan M., Peterman, Erwin J. G.·2017·The FEBS Journal

Abstract

Intraflagellar transport (IFT) is a form of motor‐dependent cargo transport that is essential for the assembly, maintenance, and length control of cilia, which play critical roles in motility, sensory reception, and signal transduction in virtually all eukaryotic cells. During IFT, anterograde kinesin‐2 and retrograde IFT dynein motors drive the bidirectional transport of IFT trains that deliver cargo, for example, axoneme precursors such as tubulins as well as molecules of the signal transduction machinery, to their site of assembly within the cilium. Following its discovery in Chlamydomonas, IFT has emerged as a powerful model system for studying general principles of motor‐dependent cargo transport and we now appreciate the diversity that exists in the mechanism of IFT within cilia of different cell types. The absence of heterotrimeric kinesin‐2 function, for example, causes a complete loss of both IFT and cilia in Chlamydomonas, but following its loss in Caenorhabditis elegans, where its primary function is loading the IFT machinery into cilia, homodimeric kinesin‐2‐driven IFT persists and assembles a full‐length cilium. Generally, heterotrimeric kinesin‐2 and IFT dynein motors are thought to play widespread roles as core IFT motors, whereas homodimeric kinesin‐2 motors are accessory motors that mediate different functions in a broad range of cilia, in some cases contributing to axoneme assembly or the delivery of signaling molecules but in many other cases their ciliary functions, if any, remain unknown. In this review, we focus on mechanisms of motor action, motor cooperation, and motor‐dependent cargo delivery during IFT.

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  • Subsequent work in protists and metazoans, including Tetrahymena, Trypanosoma, C. elegans, sea urchin, zebrafish, mouse and human, substantiated the evolutionary conservation of IFT and provided insight into its molecular workings and physiological roles.

    “Subsequent work in a range of additional organisms, including protists such as Tetrahymena thermophila and Trypanosoma brucei and metazoans like C. elegans, sea urchin, zebrafish, mouse, and human, have substantiated this view, and provided remarkable insight into the molecular workings and physiological roles of IFT 25, 30, 31, 46.”

    From Cellular signalling by primary cilia in development, organ function and disease (2019) · cites this paper as [31]

    Section 7 (IFT in different Model Systems; page unavailable) describes IFT studies across protists, C. elegans, sea urchins, zebrafish, and mice, and says direct assays in several systems have yielded mechanistic insight. Its Protists subsection covers Trypanosoma, and its references identify an IFT assay in Tetrahymena. The passages support the broad cross-eukaryote point, but do not document human work as part of the claimed subsequent studies. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • These IFT polypeptides can be subdivided into IFT-A, IFT-B1 and IFT-B2 sub-complexes containing 6, 10 and 6 different IFT particle proteins, respectively.

    “We now know these polypeptides can be subdivided into IFT-A, IFT-B1 and IFT-B2 sub-complexes that contain 6, 10 and 6 different IFT particle proteins, respectively 25, 30, 31, 46, 47.”

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Authors
Prevo, B., Scholey, J. M., & Peterman, E. J. G.
Affiliations
  • University of California San Diego (US)
  • University of California, Davis (US)
  • Vrije Universiteit Amsterdam (NL)
Corresponding author
Peterman, Erwin J. G.
Venue
The FEBS Journal
Publisher
Wiley
Published
2017-04-18
Volume
284
Issue
18
Pages
2905-2931
ISSN
  • 1742-464X (ISSN-L)
  • 1742-4658
OpenAlex
W2598068367
Cited by
203
References
240
Citations by year
2026: 7 · 2025: 13 · 2024: 19 · 2023: 20 · 2022: 30 · 2021: 24 · 2020: 27 · 2019: 24 · 2018: 28 · 2017: 10
FWCI
3.12
Type
journal article
Language
en
Open access
Locations
  • FEBS Journal (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • VU Research Portal (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek (ALW Open, Vici)
  • Stichting voor Fundamenteel Onderzoek der Materie
  • National Institutes of Health (GM50718)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cystic Fibrosis Research Advances
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
Keywords
intraflagellar transport, cilia, kinesin-2, axoneme assembly, Chlamydomonas, Caenorhabditis elegans, signal transduction
MeSH terms
Animals, Biological Transport, Chlamydomonas, Cilia, Dyneins, Flagella, Gene Expression Regulation, Tubulin, Signal Transduction, Kinesins, Caenorhabditis elegans, Axoneme, Protein Multimerization, Basal Bodies

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