Evidence map›Paper›PMID 31519916›Full record

ArticleScientific reports2019

Label-free assessment of pre-implantation embryo quality by the Fluorescence Lifetime Imaging Microscopy (FLIM)-phasor approach.

Ning Ma, Nabora Reyes de Mochel, Paula Duyen Pham, Tae Yeon Yoo, Ken W Y Cho, Michelle A Digman

Abstract readVideo-Audio Media
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed.

  1. Review
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  5. Micro magnetic resonance spectroscopy for noninvasive metabolic screening of mammalian embryos and oocytes.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  18. Label-free spatially maintained measurements of metabolic phenotypes in cells.Frontiers in bioengineering and biotechnology · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Ning MaDepartment of Biomedical Engineering, University of California, Irvine, CA, USA.
Nabora Reyes de MochelDepartment of Developmental and Cell Biology, University of California, Irvine, CA, USA.
Paula Duyen PhamDepartment of Developmental and Cell Biology, University of California, Irvine, CA, USA.
Tae Yeon YooDepartment of Developmental and Cell Biology, University of California, Irvine, CA, USA.
Ken W Y ChoDepartment of Developmental and Cell Biology, University of California, Irvine, CA, USA. kwcho@uci.edu.
Michelle A DigmanDepartment of Biomedical Engineering, University of California, Irvine, CA, USA. mdigman@uci.edu.

Funding

Univ.of Calif., Irvine Cancer Center Support GrantP30CA062203 · NCI · UNIVERSITY OF CALIFORNIA-IRVINE · PI Melanie Funes · 1994 to 2026
$57.9M
TRD4: Phasor analysisP41GM103540 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI GRATTON, ENRICO · 2012 to 2020
$12.5M
Assessment of the phasor Fluorescence Lifetime Imaging Microscopy (FLIM) Approach in an animal model R21HD090629 · NICHD · UNIVERSITY OF CALIFORNIA-IRVINE · PI CHO, KEN W.Y., DIGMAN, MICHELLE · 2017 to 2018
$405k
NCI NIH HHS P30 CA062203NICHD NIH HHS R21 HD090629NIGMS NIH HHS P41 GM103540
6 · The paper itself

Abstract

Development of quantitative, safe and rapid techniques for assessing embryo quality provides significant advances in Assisted Reproductive Technologies (ART). Instead of assessing the embryo quality by the standard morphologic evaluation, we apply the phasor-FLIM (Fluorescence Lifetime Imaging Microscopy) method to capture endogenous fluorescent biomarkers of pre-implantation embryos as a non-morphological caliber for embryo quality. Here, we identify, under hypoxic and non-hypoxic conditions, the unique spectroscopic trajectories at different stages of mouse pre-implantation development, which is referred to as the developmental, or "D-trajectory", that consists of fluorescence lifetime from different stages of mouse pre-implantation embryos. The D-trajectory correlates with intrinsic fluorescent species from a distinctive energy metabolism and oxidized lipids, as seen with Third Harmonic Generation (THG) that changes over time. In addition, we have defined a non-morphological Embryo Viability Index (EVI) to distinguish pre-implantation embryo quality using the Distance Analysis (DA), a machine learning algorithm to process the fluorescence lifetime distribution patterns. We show, under our experimental conditions, that the phasor-FLIM approach provides a much-needed non-invasive quantitative technology for identifying healthy embryos at the early compaction stage with 86% accuracy. The DA and phasor-FLIM method may provide the opportunity to improve implantation success rates for in vitro fertilization clinics.

Indexed as

AnimalsBlastocystEmbryo Culture TechniquesEmbryo ImplantationEmbryonic DevelopmentFemaleGlycolysisLasersMachine LearningMice, Inbred C57BLMicroscopy, FluorescenceOxidative PhosphorylationReactive Oxygen SpeciesStress, PhysiologicalTime-Lapse ImagingReactive Oxygen Species

Identifiers

PMID31519916
PMCPMC6744410

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.