Proteo-transcriptomic Profiles Reveal Key Regulatory Pathways and Functions of LDHA in the Ovulation of Domestic Chickens (Gallus Gallus)

Overview

Journal J Anim Sci Biotechnol

Publisher Biomed Central

Date 2024 May 9

PMID 38725063

Authors

Ruixue Nie

Wenhui Zhang

Haoyu Tian

Junying Li

Yao Ling

Bo Zhang

Hao Zhang

Changxin Wu

Affiliations

Soon will be listed here.

Abstract

Background: In poultry, the smooth transition of follicles from the preovulatory-to-postovulatory phase impacts egg production in hens and can benefit the poultry industry. However, the regulatory mechanism underlying follicular ovulation in avians is a complex biological process that remains unclear.

Results: Critical biochemical events involved in ovulation in domestic chickens (Gallus gallus) were evaluated by transcriptomics, proteomics, and in vitro assays. Comparative transcriptome analyses of the largest preovulatory follicle (F1) and postovulatory follicle (POF1) in continuous laying (CL) and intermittent laying (IL) chickens indicated the greatest difference between CL_F1 and IL_F1, with 950 differentially expressed genes (DEGs), and the smallest difference between CL_POF1 and IL_POF1, with 14 DEGs. Additionally, data-independent acquisition proteomics revealed 252 differentially abundant proteins between CL_F1 and IL_F1. Perivitelline membrane synthesis, steroid biosynthesis, lysosomes, and oxidative phosphorylation were identified as pivotal pathways contributing to ovulation regulation. In particular, the regulation of zona pellucida sperm-binding protein 3, plasminogen activator, cathepsin A, and lactate dehydrogenase A (LDHA) was shown to be essential for ovulation. Furthermore, the inhibition of LDHA decreased cell viability and promoted apoptosis of ovarian follicles in vitro.

Conclusions: This study reveals several important biochemical events involved in the process of ovulation, as well as crucial role of LDHA. These findings improve our understanding of ovulation and its regulatory mechanisms in avian species.

Citing Articles

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Zou R, Wang L, Zhang X, Dong S, Zhang Z, Chen D Poult Sci. 2025; 104(3):104884.

PMID: 39961169 PMC: 11872079. DOI: 10.1016/j.psj.2025.104884.

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