Dataset Information

Proteomic analysis of fresh, equilibrated, and frozen/thawed turkey semen in relation to spermatozoa proteome

ABSTRACT: The cryopreservation of avian semen without significant loss of fertilizing ability is of practical interest to the poultry industry and for the conservation of genetic biodiversity. However, the unique physiological features make avian spermatozoa highly sensitive to damage caused by cryopreservation. The potential proteomic changes in turkey (Meleagris gallopavo) semen throughout the cryopreservation process have never been investigated previously. Therefore, the purpose of the present study was to evaluate the proteomic changes of spermatozoa during cryopreservation at three stages (fresh, equilibrated, and frozen/thawed semen) using 2-dimensional difference in-gel electrophoresis (2D-DIGE) coupled with matrix-assisted laser desorption/ionization mass spectrometry (MALDI TOF/TOF). No differentially expressed proteins (DEPs) were found in spermatozoa proteome of fresh and equilibrated semen. One hundred forty six protein spots differed significantly between fresh and frozen/thawed spermatozoa. One hundred three protein spots differed significantly between equilibrated and frozen/thawed spermatozoa. Most of the proteins that changed in response to cryopreservation were related to the generation of precursor metabolites and energy through aerobic respiration, flagellum-dependent cell motility, and binding of sperm to the zona pellucida. This suggests the complexity of the processes leading to decreases in the quality of cryopreserved semen.

INSTRUMENT(S):

ORGANISM(S): Meleagris Gallopavo (common Turkey)

TISSUE(S): Spermatozoon, Sperm

SUBMITTER: Mariola Słowińska

LAB HEAD: Mariola Słowińska

PROVIDER: PXD053173 | Pride | 2025-07-08

REPOSITORIES: Pride

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The effect of cryopreservation on the turkey (Meleagris gallopavo) semen proteome.

Pardyak Laura L Liszewska Ewa E Judycka Sylwia S Machcińska-Zielińska Sylwia S Karol Halina H Dietrich Mariola A MA Gojło Ewa E Arent Zbigniew Z Bilińska Barbara B Rusco Giusy G Iaffaldano Nicolaia N Ciereszko Andrzej A Słowińska Mariola M

Theriogenology 20250507

Two-dimensional difference in-gel electrophoresis coupled with matrix-assisted laser desorption/ionization mass spectrometry was employed to investigate the proteome alterations induced by equilibration and freezing/thawing processes, both in turkey spermatozoa and in extracellular fluid (ECF). The freezing/thawing process resulted in reduced semen quality parameters. Viability and motility decreased threefold (90.6 %-31.2 % and 76.0 %-26.7 %, respectively), while the proportion of live spermato ...[more]

PMID: 40359838

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Project description:Background: The cryopreservation of semen is crucial for conserving genetic diversity and reproductive success in endangered species like the Siberian sturgeon. However, this process can cause cryodamage, affecting quality and protein profile of spermatozoa. While cryoprotectants like dimethyl sulfoxide (DMSO) and methanol (MeOH) facilitate post-thaw motility recovery, DMSO-preserved spermatozoa exhibit reduced fertilizing ability. This study investigates how DMSO and MeOH impact the proteome of Siberian sturgeon spermatozoa and examines semen quality parameters. Two complementary approaches of quantitative proteomics, liquid chromatography-mass spectrometry (LC-MS) and two-dimensional difference in gel electrophoresis (2D-DIGE), were used to analyze the proteomic profiles of fresh and cryopreserved spermatozoa, as well as the extracellular medium (EM; n=7 for each group). Results: Cryopreservation led to a decline in motility parameters (MOT, VCL, PROG) and viability, along with an increase in ROS levels, membrane fluidity, and acrosome damage. Despite similar quality parameters between DMSO and MeOH-preserved sperm, DMSO-preserved sperm showed dramatically lower fertilization success (6.2% vs 51.2%). A total of 224 and 118 differentially abundant proteins in spermatozoa cryopreserved with MeOH and DMSO, respectively, were identified compared to fresh samples, with 342 and 363 proteins released into the EM. The most affected proteins by cryopreservation included H2A, CABYR, PYGM, ENO3, DBI and LTA4H. Additionally, 36 and 39 uniquely altered sperm-leakage proteins were identified for MeOH and DMSO cryopreserved samples, respectively. Bioinformatic analysis showed that MeOH-specific proteins were related to chromosomal structure and mitochondrial functionality, while DMSO-specific proteins were mainly involved in acrosome reaction, zona pellucida binding, flagella structure, and nuclear pore organization. These proteins are potentially involved in sturgeon sperm fertilizing ability. The expression of six proteins was verified by western blot analysis. Conclusions: This study provides the first comprehensive proteomic characterization of Siberian sturgeon spermatozoa after cryopreservation with DMSO and MeOH, revealing insights into proteomic changes that affect fertilizing ability and aiding conservation efforts for this endangered species.

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