Purpose: To investigate small RNA profiles in sperm, identify stable miRNA patterns unique to sperm, and assess the behavior of consistently expressed miRNAs in sperm from subfertile men compared to fertile controls.
Methods: The small RNA profiles of single sperm from four proven fertile men were analyzed using Small RNA next-generation sequencing (NGS). Subsequently, a specific set of miRNAs was validated using RT-qPCR on additional sperm samples from 65 subfertile men from an infertility clinic and 30 proven fertile men.
Results: Small RNA sequencing revealed a diverse range of sperm small RNA biotypes, including miRNAs. The mapped read percentage ranged from 22.19% for single sperm to 83.29% for enriched sperm samples used at different RNA concentrations. In single sperm, a smaller proportion of sequences were attributed to piRNAs (2.79%), miRNA (0.94%), tRNA (0.82%), and rRNA (0.47%) compared to enriched sperm samples, where piRNA (41.68%), tRNA (20.31%), miRNA (11.11%), and rRNA (6.54%) were observed. Distinct detection rates and a higher number of detected miRNAs were noted with enriched sperm samples compared to single sperm obtained using either a micromanipulator or microdissection systems. Among the identified miRNAs, 110 were consistently present in all samples. RT-qPCR revealed 15 miRNAs with increased expression and 5 miRNAs with decreased expression in sperm samples from subfertile men compared to proven fertile men. These differentially validated miRNAs were significantly correlated, either positively or negatively, with sperm count, motility, and morphology.
Conclusion: The study extensively examines small RNAs in single sperm, identifying sperm-specific miRNAs that could serve as molecular markers to distinguish between subfertile and fertile men in clinical settings.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11621271 | PMC |
http://dx.doi.org/10.1007/s10815-024-03264-w | DOI Listing |
BMC Pregnancy Childbirth
January 2025
Assisted Reproduction Center, Northwest Women's and Children's Hospital, No. 73 Houzai Gate, Xincheng District, Xi'an, 710003, Shaanxi province, People's Republic of China.
Background: Up to now, a number of studies have explored the influence of blastocyst biopsy on maternal and neonatal outcomes, and the results have been somewhat inconsistent. Therefore, the aim of this study was to investigate whether blastocyst biopsy is associated with an elevated risk of hypertensive disorders of pregnancy (HDP) and other adverse perinatal outcomes during frozen embryo transfer (FET) cycles in singleton live births resulting from intracytoplasmic sperm injection (ICSI) in women aged ≤ 35 years.
Methods: A total of 1,008 women were involved in this study from January 2020 to June 2022, who underwent ICSI cycles and received single FET, leading to the birth of a live singleton newborn.
Reprod Fertil
January 2025
M Bazrgar, Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran., Tehran, Iran (the Islamic Republic of).
It is believed that aneuploid embryos release cell-free DNA (cfDNA) into the blastocyst cavity during the self-correction process through the apoptotic mechanism. This study aimed to develop less invasive methods for predicting ploidy status by investigating how ploidy status affects blastocoel fluid DNA (BF-DNA) levels and apoptotic gene expression as indicators of embryo viability. Human blastocysts were classified into three groups; Survivable Embryo (SE), Fatal Single and double Aneuploidy (FSDA), and Multiple Aneuploidy (MA) using array comparative genomic hybridization (array-CGH) by trophectoderm (TE) biopsy.
View Article and Find Full Text PDFLife (Basel)
January 2025
Department of Obstetrics and Gynecology, Villa Sofia Cervello Hospital, University of Palermo, 90146 Palermo, Italy.
Resveratrol can beneficially affect growth and follicle development and lead to improved sperm function parameters in pre-clinical studies, while information from clinical studies is still inconclusive. This study aims to evaluate the biological and clinical impact of a resveratrol-based multivitamin supplement on level II assisted reproduction cycles (IVF and intracytoplasmic sperm injection [ICSI]). A retrospective, case-control study, involving 70 infertile couples undergoing IVF/ICSI cycles, was conducted at the Assisted Reproductive Center, Obstetrics and Gynecology Unit-Villa Sofia-Cervello Hospital in Palermo.
View Article and Find Full Text PDFBiology (Basel)
January 2025
Hunan Engineering Research Center of Ecological Environment Intelligent Monitoring and Disaster Prevention and Mitigation Technology in Dongting Lake Region, College of Information and Electronic Engineering, Hunan City University, Yiyang 413000, China.
Plant sterilants are used to control rodent populations due to their minimal environmental risk and other ethical considerations. However, their practical utilization is unsatisfactory due to high costs and processing difficulties. is a plant material that has shown the potential to inhibit the reproduction of , a species that causes serious damage to crops in the Dongting Lake region in China.
View Article and Find Full Text PDFBMC Genomics
January 2025
MOE Key Laboratory of Marine Genetics and Breeding, Laboratory for Marine Biology and Biotechnology (Qingdao Marine Science and Technology Center), Ocean University of China, Qingdao, China.
Background: Spermatogenesis is a complex process of cellular differentiation that commences with the division of spermatogonia stem cells, ultimately resulting in the production of functional spermatozoa. However, a substantial gap remains in our understanding of the molecular mechanisms and key driver genes that underpin this process, particularly in invertebrates. The dwarf surfclam (Mulinia lateralis) is considered an optimal bivalve model due to its relatively short generation time and ease of breeding in laboratory settings.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!