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Cryoprotectant-specific alterations in the proteome of Siberian sturgeon spermatozoa induced by cryopreservation.

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العنوان: Cryoprotectant-specific alterations in the proteome of Siberian sturgeon spermatozoa induced by cryopreservation.
المؤلفون: Kodzik, Natalia1 (AUTHOR), Ciereszko, Andrzej1 (AUTHOR), Judycka, Sylwia1 (AUTHOR), Słowińska, Mariola1 (AUTHOR), Szczepkowska, Bożena2 (AUTHOR), Świderska, Bianka3 (AUTHOR), Dietrich, Mariola A.1 (AUTHOR) m.dietrich@pan.olsztyn.pl
المصدر: Scientific Reports. 7/31/2024, Vol. 14 Issue 1, p1-24. 24p.
مصطلحات موضوعية: *CHROMOSOME structure, *ACROSOME reaction, *ZONA pellucida, *REACTIVE oxygen species, *SEMEN
مستخلص: Cryopreservation is crucial for conserving genetic diversity in endangered species including the critically endangered group of sturgeons (Acipenseridae), but it can compromise sperm quality and protein profiles. Although cryopreservation with dimethyl sulfoxide (DMSO) and methanol (MeOH) results in the recovery of good post-thaw motility, DMSO-preserved sperm show reduced fertilization ability. This study was conducted in Siberian sturgeon as a model for Acipenserid fishes to explore the effects of DMSO and MeOH on the proteome of semen using advanced proteomics methods—liquid chromatography‒mass spectrometry and two-dimensional difference gel electrophoresis. We analyzed the proteomic profiles of fresh and cryopreserved spermatozoa and their extracellular medium and showed that cryopreservation decreases motility and viability and increases reactive oxygen species levels, membrane fluidity, and acrosome damage. Despite having similar post-thaw semen motility, sperm treated with DMSO had significantly lower fertilization success (6.2%) than those treated with MeOH (51.2%). A total of 224 and 118 differentially abundant proteins were identified in spermatozoa preserved with MeOH and DMSO, respectively. MeOH-related proteins were linked to chromosomal structure and mitochondrial functionality, while DMSO-related proteins impacted fertilization by altering the acrosome reaction and binding of sperm to the zona pellucida and nuclear organization. Additionally, cryopreservation led to alterations in the proacrosin/acrosin system in both cryoprotectants. This study provides the first comprehensive proteomic characterization of Siberian sturgeon sperm after cryopreservation, offering insights into how cryoprotectants impact fertilization ability. [ABSTRACT FROM AUTHOR]
قاعدة البيانات: Academic Search Index
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