ArticleProceedings of the National Academy of Sciences of the United States of America2016
Microtubule-microtubule sliding by kinesin-1 is essential for normal cytoplasmic streaming in Drosophila oocytes.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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50 citing papers in PubMed, 110 citations in OpenAlex.
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- 'Mitotic' kinesin-5 is a dynamic brake for axonal growth in Drosophila.Development (Cambridge, England) · 2025Article
- Inward transport of organelles drives outward migration of the spindle during C. elegans meiosis.Cell reports · 2025Article
- Visualization and Analyses of Cytoplasmic Streaming in C. elegans Zygotes.Methods in molecular biology (Clifton, N.J.) · 2025Article
- EB-SUN, a new microtubule plus-end tracking protein inMolecular biology of the cell · 2024Article
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- Kinesin-1 patterns Par-1 and Rho signaling at the cortex of syncytial embryos of Drosophila.The Journal of cell biology · 2024Article
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- The dynamic duo of microtubule polymerase Mini spindles/XMAP215 and cytoplasmic dynein is essential for maintainingProceedings of the National Academy of Sciences of the United States of America · 2023Article
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5 authors at 2 institutions in 1 country.
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Abstract
Cytoplasmic streaming in Drosophila oocytes is a microtubule-based bulk cytoplasmic movement. Streaming efficiently circulates and localizes mRNAs and proteins deposited by the nurse cells across the oocyte. This movement is driven by kinesin-1, a major microtubule motor. Recently, we have shown that kinesin-1 heavy chain (KHC) can transport one microtubule on another microtubule, thus driving microtubule-microtubule sliding in multiple cell types. To study the role of microtubule sliding in oocyte cytoplasmic streaming, we used a Khc mutant that is deficient in microtubule sliding but able to transport a majority of cargoes. We demonstrated that streaming is reduced by genomic replacement of wild-type Khc with this sliding-deficient mutant. Streaming can be fully rescued by wild-type KHC and partially rescued by a chimeric motor that cannot move organelles but is active in microtubule sliding. Consistent with these data, we identified two populations of microtubules in fast-streaming oocytes: a network of stable microtubules anchored to the actin cortex and free cytoplasmic microtubules that moved in the ooplasm. We further demonstrated that the reduced streaming in sliding-deficient oocytes resulted in posterior determination defects. Together, we propose that kinesin-1 slides free cytoplasmic microtubules against cortically immobilized microtubules, generating forces that contribute to cytoplasmic streaming and are essential for the refinement of posterior determinants.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.