ArticleFrontiers in cell and developmental biology2026
Surface-enhanced Raman spectroscopy analysis of glucose in spent embryo culture medium: correlation with embryo developmental potential.
Article in Frontiers in cell and developmental biology, 2026. 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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Abstract
Introduction: Accurate and non-invasive assessment of early embryonic metabolic biomarkers and their association with developmental potential remains a major challenge in assisted reproductive technology (ART). Glucose is a key metabolic component associated with embryo developmental competence, and its residual level in spent embryo culture medium (SECM) may reflect embryonic metabolic activity and provide valuable information for embryo assessment. Methods: In this study, surface-enhanced Raman spectroscopy (SERS) was used for the relative quantification of residual glucose in SECM. A mouse model was applied to compare residual glucose levels between blastocyst-forming and non-blastocyst-forming groups. In addition, quantitative SERS (qSERS) stratification based on an optimized threshold was performed to evaluate the association between residual glucose levels and blastocyst developmental outcomes. Results: The results demonstrated the feasibility and analytical performance of the SERS-based metabolic analysis, with an analytical repeatability relative standard deviation (RSD) of 1.22% and a regression goodness-of-fit Discussion: These findings suggest that residual glucose in SECM is an informative extracellular metabolic feature for evaluating embryo developmental potential. However, the predictive capacity of glucose alone remains limited, and future embryo assessment should integrate additional metabolic or morphokinetic indicators for a more comprehensive evaluation. Overall, this SERS-based glucose sensing strategy provides a technical basis for future non-invasive and multi-parametric embryo assessment in ART.
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