ReviewAnimals : an open access journal from MDPI2025
Molecular Constraints of Sperm Sex Sorting via TLR7/8 Activation.
Review in Animals : an open access journal from MDPI, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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9 authors.
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Abstract
In modern livestock, the demand for sperm sex selection technologies is high, as the ability to deliberately produce offspring of a specific sex offers significant economic advantages. Traditionally, sperm sorting is performed using Fluorescence-Activated Cell Sorting. However, the flow cytometric method is expensive, technically complex, and associated with reduced sperm viability. An alternative promising method involves the use of Toll-like TLR7/8 receptors for the selective binding of spermatozoa of a particular sex. It was discovered previously that the activation of TLR7/8 by its ligand(s) selectively inhibits the motility of X-bearing sperm without affecting the motility of Y-bearing sperm. The swim-up technique, which separates sperm based on sex chromosome type by isolating fractions enriched in either X- or Y-bearing gametes due to differences in their motility, can be used with this method. Sperm sex sorting via the TLR7/8 activation is cheap, technically non-complex, and does not affect sperm viability negatively. The goal of this review is to provide an overview of the TLR7/8-dependent sperm sorting method. Further, we discuss why the method of sperm sorting via TLR7/8 activation is successfully implemented in some animal species (such as murine, caprine, ovine, and bovine) but fails in others, like swine and canine.
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