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Updated: May 31, 2026
08:48
Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
Published on: April 21, 2022
Molecular markers of sperm quality
1Division of Animal Sciences, University of Missouri-Columbia, Columbia, MO 62511, USA. SutovskyP@missouri.edu
Society of Reproduction and Fertility Supplement
|July 16, 2011
Summary
New biomarkers can identify subtle sperm defects missed by traditional methods, improving male fertility assessment and assisted fertilization outcomes. These markers offer objective insights into sperm quality beyond light microscopy.
Area of Science:
- Reproductive Biology
- Biomarker Discovery
- Spermatozoa Analysis
Background:
- Light microscopic semen evaluation is subjective and has limited prognostic value for male fertility.
- Cryptic sperm abnormalities at the molecular level are not detectable by light microscopy.
- Novel biomarkers are needed for objective assessment of sperm quality and male reproductive performance.
Purpose of the Study:
- To review strategies for identifying novel male fertility/sperm quality biomarkers.
- To highlight biomarkers detectable by flow cytometry for objective semen analysis.
- To discuss the role of specific proteins and structures in defective spermatozoa.
Main Methods:
- Proteomic, biochemical, and immunocytochemical analyses of defective spermatozoa.
- Utilizing flow cytometry for rapid, automated, high-throughput biomarker measurement.
- Investigating fluorescent markers, fluorochromes, vital dyes, probes, and antibodies.
Main Results:
- Identified proteins/ligands uniquely associated with defective spermatozoa, including ubiquitin, SPTRX3/TXNDC8, 15LOX, and Lewis(y)-terminated N-glycans.
- These identified markers are associated with poor semen quality and reduced fertility.
- Sperm cytoplasmic droplets accumulate several biomarker proteins, impacting sperm quality.
Conclusions:
- Novel biomarkers offer objective assessment of sperm quality, overcoming limitations of light microscopy.
- These "negative" fertility markers aid in identifying defective spermatozoa with hidden abnormalities.
- Advanced biomarker analysis, particularly via flow cytometry, enhances male fertility diagnosis and assisted reproduction outcomes.
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