Spermatid Isolation
Spermatid Isolation - Related Videos
06:31
Step-specific Sorting of Mouse Spermatids by Flow Cytometry
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Cited by 11 •
2015
We describe a sorting strategy for mouse spermatids using flow cytometry. Spermatids are sorted into four highly pure populations, including round (spermiogenesis steps 1-9), early elongating (spermiogenesis steps 10-12), late elongating (spermiogenesis steps 13-14) and elongated spermatids (spermiogenesis steps 15-16). DNA staining, size and granulosity are used as selection parameters.
08:41
Mouse Round Spermatid Injection
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Cited by 1 •
2024
Here, we introduce a method for performing round spermatid injection (ROSI) in mice, a technique with promising clinical applications and utility for investigating the mechanisms underlying embryonic development.
05:46
Isolation and In vitro Activation of Caenorhabditis elegans Sperm
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Cited by 26 •
2011
A protocol for isolating and activating spermatids from male C. elegans is described here. Cutting the posterior end of male releases spermatids. The spermatids can be activated by addition of protease.
10:22
Enrichment of Pachytene Spermatocytes and Spermatids from Mouse Testes Using Standard Laboratory Equipment
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Cited by 29 •
2019
Presented here is a protocol for enriching pachytene spermatocytes, round spermatids, and elongating spermatids from adult mouse testes using a discontinuous bovine serum albumin density gradient with standard laboratory equipment.
08:09
Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice
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Cited by 1 •
2017
We describe the isolation of cardiac extracellular matrix from C57Bl/6J control mice, tight-skin mice, and tight-skin mice treated with the IRF5 inhibitory peptide. We also describe the vasodilation studies on the isolated vessels from C57Bl/6J, tight-skin mice and tight-skin mice treated with the IRF5 inhibitory peptide.
FAQs
Cell size, density, morphology, and molecular markers provide complementary ways to separate spermatids from testicular tissue or mixed germ-cell populations. Their value lies in distinguishing cells that may otherwise coexist during spermatogenesis. The chosen criterion affects how specifically the target population is recovered and how confidently subsequent observations can be assigned to spermatids.
Because spermatids are haploid, isolating them allows researchers to examine late germ-cell development without treating the entire testicular population as a single sample. This is particularly useful for analyzing meiosis, spermiogenesis, chromatin remodeling, gene expression, and cellular differentiation, linking molecular changes to the progression toward mature spermatozoa.
Maintaining viability and developmental characteristics is central because isolation can otherwise alter the very properties under study. A useful preparation therefore preserves cells in a condition that supports microscopy or molecular analysis while retaining interpretable features of late spermatogenesis. This consideration connects technical quality with reliable conclusions about differentiation and germ-cell development.
The basic workflow begins with testicular tissue dissociation, followed by selective separation of the resulting mixed cell population. Separation can rely on physical characteristics such as size, density, or morphology, or on molecular markers. Researchers then use the separated cells for downstream examination, with the procedure judged by both recovery of spermatids and preservation of their condition.
Isolated cells can be used as defined populations for microscopy and molecular analysis. Microscopy can address cellular appearance and differentiation, whereas molecular approaches can examine gene expression or chromatin remodeling. Using a separated population helps relate these observations to late spermatogenesis rather than to unrelated cells present in the original tissue.
In developmental biology, the approach helps connect cellular state with the formation of mature spermatozoa. It provides a way to investigate how genetic or environmental factors influence late germ-cell development, while also supporting focused studies of meiosis, spermiogenesis, and differentiation. The resulting comparisons can clarify which developmental features change under a given condition.