Proteomic profile of maternal-aged blastocoel fluid suggests a novel role for ubiquitin system in blastocyst quality.
J Assist Reprod Genet
; 34(2): 225-238, 2017 Feb.
Article
em En
| MEDLINE
| ID: mdl-27924460
ABSTRACT
PURPOSE:
The etiology of maternal aging, a common cause of female factor infertility and a rate-limiting step in vitro fertilization (IVF) success, remains still unclear. Proteomic changes responsible for the impaired successful pregnancy outcome after IVF with aged blastocysts have not been yet evaluated. The objective of this prospective study was to employ proteomic techniques and bioinformatic tools to enlight differences at the protein level in blastocoel fluid of aged and younger woman.METHODS:
Protein composition of human blastocoel fluid isolated by micromanipulation from 46 blastocysts of women aged <37 years (group A) and 29 of women aged ≥37 years (group B) have been identified by a shotgun proteomic approach based on high-resolution nano-liquid chromatography electrospray-ionization-tandem mass spectrometry (nLC-ESI-MS/MS) using label free for the relative quantification of their expression levels.RESULTS:
The proteomic analysis leads to the identification and quantification of 148 proteins; 132 and 116 proteins were identified in groups A and B, respectively. Interestingly, the identified proteins are mainly involved in processes aimed at fine tuning embryo implantation and development. Among the 100 proteins commonly expressed in both groups, 17 proteins are upregulated and 44 downregulated in group B compared to group A. Overall, the analysis identified 33 proteins, which were increased or present only in B while 76 were decreased in B or present only in A.CONCLUSIONS:
Data revealed that maternal aging mainly affects blastocyst survival and implantation through unbalancing the equilibrium of the ubiquitin system known to play a crucial role in fine-tuning several aspects required to ensure successful pregnancy outcome.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Biossíntese de Proteínas
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Fertilização in vitro
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Proteômica
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Transferência Embrionária
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Adult
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Female
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Humans
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Pregnancy
Idioma:
En
Revista:
J Assist Reprod Genet
Assunto da revista:
GENETICA
/
MEDICINA REPRODUTIVA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Itália