Dynein 1 supports spermatid transport and spermiation during spermatogenesis in the rat testis
Open accessAbstract
In the mammalian testis, spermatogenesis is dependent on the microtubule (MT)-specific motor proteins, such as dynein 1, that serve as the engine to support germ cell and organelle transport across the seminiferous epithelium at different stages of the epithelial cycle. Yet the underlying molecular mechanism(s) that support this series of cellular events remain unknown. Herein, we used RNAi to knockdown cytoplasmic dynein 1 heavy chain (Dync1h1) and an inhibitor ciliobrevin D to inactivate dynein in Sertoli cells in vitro and the testis in vivo, thereby probing the role of dynein 1 in spermatogenesis. Both treatments were shown to extensively induce disruption of MT organization across Sertoli cells in vitro and the testis in vivo. These changes also perturbed the transport of spermatids and other organelles (such as phagosomes) across the epithelium. These changes thus led to disruption of spermatogenesis. Interestingly, the knockdown of dynein 1 or its inactivation by ciliobrevin D also perturbed gross disruption of F-actin across the Sertoli cells in vitro and the seminiferous epithelium in vivo, illustrating there are cross talks between the two cytoskeletons in the testis. In summary, these findings confirm the role of cytoplasmic dynein 1 to support the transport of spermatids and organelles across the seminiferous epithelium during the epithelial cycle of spermatogenesis.
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The shRNA for rat cytoplasmic DHC1 has been reported to reduce DHC1 in cultured rat Sertoli cells.
“We used a shRNA for rat cytoplasmic DHC1, which has been reported to reduce it in cultured rat Sertoli cells (29) (Fig. 6C).”
From Active transport by cytoplasmic dynein sustains dendritic MAP2 localization in developing neurons (2026) · cites this paper as [29]
The Materials and Methods say the authors transfected cultured rat Sertoli cells with Dync1h1-specific siRNA duplexes, not shRNA. The Results report that this RNAi reduced Dync1h1 expression by about 70% in those cells. The reduction is supported, but the claim identifies the wrong reagent. (LLM, conf=0.88)
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Cited by
Sorted by citations
Active transport by cytoplasmic dynein sustains dendritic MAP2 localization in developing neurons
Yonemura, Y., Sakai, Y., Nakata, R., Hagita-Tatsumoto, A., Miyasaka, T., & Misonou, H. (2026) · Journal of Biological Chemistry · doi:10.1016/j.jbc.2026.113407
- Authors
- Wen, Q., Tang, E. I., Lui, W.-Y., Lee, W. M., Wong, C. K. C., Silvestrini, B., & Cheng, C. Y.
- Affiliations
- Population Council (US)
- University of Hong Kong (HK)
- Hong Kong Baptist University (HK)
- SBM Srl Pharmaceuticals, Rome, Italy
- Corresponding author
- Cheng, C. Yan
- Venue
- American Journal of Physiology-Endocrinology and Metabolism
- Publisher
- American Physiological Society
- Published
- 2018-11-01
- Volume
- 315
- Issue
- 5
- Pages
- E924-E948
- ISSN
- 0193-1849 (ISSN-L)
- 1522-1555
- PMC
- PMC6293164
- OpenAlex
- W2884472498
- Cited by
- 46
- References
- 0
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 6 · 2023: 5 · 2022: 6 · 2021: 7 · 2020: 7 · 2019: 7 · 2018: 1
- FWCI
- 5.90
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- HHS | NIH | National Institute of Child Health and Human Development (NICHD) (R01 HD56034, U54 HD029990 Project 5)
- Topics
- Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Biology and Fertility
- Keywords
- cytoplasmic dynein, DYNC1H1, spermatogenesis, spermiation, Sertoli cells, microtubule motor proteins, microtubule organization, F-actin, organelle transport, seminiferous epithelium, testis
- MeSH terms
- Animals, Biological Transport, Dyneins, Male, Sertoli Cells, Spermatids, Spermatogenesis, Testis, RNA Interference, Rats, Quinazolinones
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