In Vitro Spermiogenesis
In Vitro Spermiogenesis - Related Videos
08:25
Advanced 3D Liver Models for In vitro Genotoxicity Testing Following Long-Term Nanomaterial Exposure
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Cited by 21 •
2020
This procedure was established to be used for developing advanced 3D hepatic cultures in vitro, which can provide a more physiologically relevant assessment of the genotoxic hazards associated with nanomaterial exposures over both an acute or long-term, repeated dose regimes.
08:03
An In Vitro Organ Culture Model of the Murine Intervertebral Disc
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Cited by 22 •
2017
Whole organ culture of the intervertebral disc (IVD) preserves the native extracellular matrix, cell phenotypes, and cellular-matrix interactions. Here we describe an IVD culture system using mouse lumbar and caudal IVDs in their functional spinal units and several applications utilizing this system.
10:13
Eye Irritation Test (EIT) for Hazard Identification of Eye Irritating Chemicals using Reconstructed Human Cornea-like Epithelial (RhCE) Tissue Model
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Cited by 10 •
2015
We have developed an eye irritation test which utilizes a three dimensional reconstructed human cornea-like epithelial (RhCE) tissue model. The test is able to discriminate between ocular irritant and corrosive materials (GHS Categories 1 and 2 combined) and those that do not require labeling (GHS No Category).
12:15
In Vitro Polymerization of F-actin on Early Endosomes
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Cited by 3 •
2017
Early endosome functions depend on F-actin polymerization. Here, we describe a microscopy-based in vitro assay that reconstitutes the nucleation and polymerization of F-actin on early endosomal membranes in test tubes, thus rendering this complex series of reactions amenable to biochemical and genetic manipulations.
09:25
In vitro Reconstitution of the Active T. castaneum Telomerase
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Cited by 5 •
2011
Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more than a decade. Here, we present methods for the isolation of the recombinant Tribolium castaneum TERT (TcTERT) and the reconstitution of the active T. castaneum telomerase ribonucleoprotein (RNP) complex in vitro.
FAQs
Nuclear condensation and cytoplasmic remodeling are important because they accompany the transition toward specialized sperm structure. During the cultured process, the haploid spermatid changes its nucleus while reorganizing its cytoplasm, and it also develops an acrosome and flagellum. Examining these coordinated features helps investigators relate visible cellular changes to the final stage of male germ-cell development.
Acrosome formation and flagellum assembly represent distinct structural milestones rather than interchangeable changes. The acrosome is one specialized feature formed during differentiation, whereas the flagellum contributes to the sperm cell’s characteristic architecture. Considering these events separately allows studies to ask whether a culture condition or biological factor affects nuclear, acrosome-related, or flagellar development differently.
Several specialized changes must occur together, including nuclear condensation, acrosome formation, flagellum assembly, and cytoplasmic remodeling. In vitro systems can therefore be evaluated not only for whether individual features appear, but also for whether the overall process produces functional spermatozoa. This limitation is essential when interpreting successful-looking cellular changes and assessing how closely the culture model reflects development in the body.
A basic experimental workflow begins with haploid spermatids placed under controlled culture conditions. Investigators then examine progression through nuclear condensation, acrosome formation, flagellum assembly, and cytoplasmic remodeling. Tracking these features provides a structured way to assess how far differentiation proceeds and whether the cultured cells acquire the specialized characteristics associated with sperm development.
Results can indicate whether cultured spermatids develop the specialized features associated with spermatozoa and which aspects of differentiation are most affected. Comparing nuclear, acrosome, flagellar, and cytoplasmic changes can help investigators study cellular mechanisms of spermatogenesis. The model also supports investigation of how environmental or genetic factors influence sperm development, while incomplete functional maturation remains an important limitation.
In vitro spermiogenesis is useful for examining the final stage of male germ-cell development and investigating possible causes of male infertility. It may also contribute to fertility-preservation strategies and reproductive medicine research. Because the process occurs under controlled laboratory conditions, the approach offers a way to study developmental effects linked to environmental or genetic factors without relying only on observations made in the body.