NMN in bovine embryo culture: higher NAD⁺ and mitochondrial function at morula
In cultured bovine fertilized eggs, NAD⁺ fell during in vitro culture; adding the NAD⁺ precursor NMN eased this fall, raised blastocyst formation rate and sped development, with mitochondrial changes measured at the morula stage. [1]
Automatic summary · not editorially reviewed
The key findings
NAD⁺ levels fell during in vitro culture of bovine fertilized ova, and NMN alleviated this decrease. [1]
NMN increased the blastocyst formation rate and accelerated the developmental rate. [1]
At the morula stage, NMN raised mitochondrial membrane potential, oxygen consumption rate and mitochondrial DNA copy number while lowering reactive oxygen species levels. [1]
The source at a glance
- Study type / format
- Laboratory study of embryos in in vitro culture, including transcriptome analysis and mitochondrial measurements (abstract only).
- Population / context
- Cultured bovine fertilized ova (mammalian embryos) in in vitro culture; no human participants.
- Summary based on
- Study abstract
- Original publication
- October 12, 2026
NAD⁺ decline in cultured bovine fertilized ova
The source starts from the idea that NAD⁺ regulates cellular processes, but that NAD⁺ levels are predicted to drop below physiological requirements in the culture environment. The researchers therefore tested the NAD⁺ precursor nicotinamide mononucleotide (NMN) on NAD⁺ levels and viability of mammalian fertilized ova. In their bovine in vitro culture, NAD⁺ levels decreased over time, and this decrease was alleviated by NMN. This is a laboratory embryo-culture observation, not a finding about human health or lifespan.
Supporting source [1]
Faster blastocyst development with NMN in culture
NMN increased the blastocyst formation rate and accelerated the developmental rate of the cultured embryos. The source describes the overall result as follows: adding NMN to the embryo culture medium increased NAD⁺ levels in embryos and enhanced their ability to develop into blastocysts. These are outcomes measured in cultured bovine embryos, so they do not show that NMN extends lifespan or improves health in people.
Supporting source [1]
Mitochondrial measures in morula, not lifespan outcomes
A transcriptome analysis showed that NMN caused significant changes in the expression of genes involved in mitochondrial function in morula. At the morula stage, NMN increased mitochondrial membrane potential, oxygen consumption rate and mitochondrial DNA copy number while reducing reactive oxygen species levels. These are biomarker and cell-level measurements in embryos at one developmental stage. The abstract reports no human participants, no disease outcomes and no lifespan data, so the mitochondrial findings should not be read as proven health benefits.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The work concerns cultured bovine embryos, with mitochondrial and developmental measures at defined stages. No human participants, disease outcomes or lifespan data are reported. Associations in culture are not causal health effects in people.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Ye S, Hashimoto S, Yamanaka M, Gamage SUK, Inoue Y, Iwata H, Morimoto Y, Tachibana D. · europepmc.org · October 12, 2026