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Huynh NV, Rehage C, Hyndman KA. Mild dehydration effects on the murine kidney single-nucleus transcriptome and chromatin accessibility. Am J Physiol Renal Physiol 2023; 325:F717-F732. [PMID: 37767569 DOI: 10.1152/ajprenal.00161.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/12/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Daily, we may experience mild dehydration with a rise in plasma osmolality that triggers the release of vasopressin. Although the effect of dehydration is well characterized in collecting duct principal cells (CDPCs), we hypothesized that mild dehydration (<12 h) results in many kidney cell-specific changes in transcriptomes and chromatin accessibility. Single-nucleus (sn) multiome (RNA-assay for transposase-accessible chromatin) sequencing and bulk RNA sequencing of kidneys from male and female mice that were mildly water deprived or not were compared. Water-deprived mice had a significant increase in plasma osmolality. sn-multiome-seq resulted in 19,837 nuclei that were annotated into 33 clusters. In CDPCs, aquaporin 2 (Aqp2) and aquaporin 3 (Apq3) were greater in dehydrated mice, but there were novel genes like gremlin 2 (Grem2; a cytokine) that were increased compared with ad libitum mice. The transcription factor cAMP-responsive element modulator (Crem) was greater in CDPCs of dehydrated mice, and the Crem DNA motif was more accessible. There were hundreds of sex- and dehydration-specific differentially expressed genes (DEGs) throughout the kidney, especially in the proximal tubules and thin limbs. In male mice, DEGs were enriched in pathways related to lipid metabolism, whereas female DEGs were enriched in organic acid metabolism. Many highly expressed genes had a positive correlation with increased chromatin accessibility, and mild dehydration exerted many transcriptional changes that we detected at the chromatin level. Even with a rise in plasma osmolality, male and female kidneys have distinct transcriptomes suggesting that there may be diverse mechanisms used to remain in fluid balance.NEW & NOTEWORTHY The kidney consists of >30 cell types that work collectively to maintain fluid-electrolyte balance. Kidney single-nucleus transcriptomes and chromatin accessibility profiles from male and female control (ad libitum water and food) or mildly dehydrated mice (ad libitum food, water deprivation) were determined. Mild dehydration caused hundreds of cell- and sex-specific transcriptomic changes, even though the kidney function to conserve water was the same.
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Affiliation(s)
- Nha Van Huynh
- Section of Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Cassidy Rehage
- Section of Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Kelly A Hyndman
- Section of Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
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Vann K, Weidner AE, Walczyk AC, Astapova O. Paxillin knockout in mouse granulosa cells increases fecundity†. Biol Reprod 2023; 109:669-683. [PMID: 37552051 PMCID: PMC10651069 DOI: 10.1093/biolre/ioad093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/29/2023] [Accepted: 08/02/2023] [Indexed: 08/09/2023] Open
Abstract
Paxillin is an intracellular adaptor protein involved in focal adhesions, cell response to stress, steroid signaling, and apoptosis in reproductive tissues. To investigate the role of paxillin in granulosa cells, we created a granulosa-specific paxillin knockout mouse model using Cre recombinase driven by the Anti-Müllerian hormone receptor 2 gene promoter. Female granulosa-specific paxillin knockout mice demonstrated increased fertility in later reproductive age, resulting in higher number of offspring when bred continuously up to 26 weeks of age. This was not due to increased numbers of estrous cycles, ovulated oocytes per cycle, or pups per litter, but this was due to shorter time to pregnancy and increased number of litters in the granulosa-specific paxillin knockout mice. The number of ovarian follicles was not significantly affected by the knockout at 30 weeks of age. Granulosa-specific paxillin knockout mice had slightly altered estrous cycles but no difference in circulating reproductive hormone levels. Knockout of paxillin using clustered regularly interspaced short palindromic repeat-associated protein 9 (CRISPR-Cas9) in human granulosa-derived immortalized KGN cells did not affect cell proliferation or migration. However, in cultured primary mouse granulosa cells, paxillin knockout reduced cell death under basal culture conditions. We conclude that paxillin knockout in granulosa cells increases female fecundity in older reproductive age mice, possibly by reducing granulosa cell death. This study implicates paxillin and its signaling network as potential granulosa cell targets in the management of age-related subfertility.
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Affiliation(s)
- Kenji Vann
- Division of Endocrinology, Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Adelaide E Weidner
- Division of Endocrinology, Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Ariana C Walczyk
- Division of Endocrinology, Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Olga Astapova
- Division of Endocrinology, Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
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Tian CX, Lin XH, Zhou DY, Chen Y, Shen YJ, Ye MH, Duan CY, Zhang YL, Yang BL, Deng SP, Zhu CH, Li GL. A chromosome-level genome assembly of Hong Kong catfish (Clarias fuscus) uncovers a sex-determining region. BMC Genomics 2023; 24:291. [PMID: 37254055 DOI: 10.1186/s12864-023-09394-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 05/19/2023] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND Hong Kong catfish (Clarias fuscus) is an ecologically and economically important species that is widely distributed in freshwater regions of southern China. Hong Kong catfish has significant sexual growth dimorphism. The genome assembly of the Hong Kong catfish would facilitate study of the sex determination and evolution mechanism of the species. RESULTS The first high-quality chromosome-level genome of the Hong Kong catfish was constructed. The total genome was 933.4 Mb, with 416 contigs and a contig N50 length of 8.52 Mb. Using high-throughput chromosome conformation capture (Hi-C) data, the genome assembly was divided into 28 chromosomes with a scaffold N50 length of 36.68 Mb. A total of 23,345 protein-coding genes were predicted in the genome, and 94.28% of the genes were functionally annotated in public databases. Phylogenetic analysis indicated that C. fuscus and Clarias magur diverged approximately 63.7 million years ago. The comparative genome results showed that a total of 60 unique, 353 expanded and 851 contracted gene families were identified in Hong Kong catfish. A sex-linked quantitative trait locus identified in a previous study was located in a sex-determining region of 30.26 Mb (0.02 to 30.28 Mb) on chromosome 13 (Chr13), the predicted Y chromosome. This QTL region contained 785 genes, of which 18 were identified as sex-related genes. CONCLUSIONS This study is the first to report the chromosome-level genome assembly of Hong Kong catfish. The study provides an excellent genetic resource that will facilitate future studies of sex determination mechanisms and evolution in fish.
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Affiliation(s)
- Chang-Xu Tian
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China.
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524088, China.
| | - Xing-Hua Lin
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
| | - Da-Yan Zhou
- Guangxi Introduction and Breeding Center of Aquaculture, Nanning, 530001, China
| | - Yu Chen
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
| | - Yi-Jun Shen
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
| | - Ming-Hui Ye
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
| | - Cun-Yu Duan
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
| | - Yu-Lei Zhang
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
| | - Bin-Lan Yang
- Guangxi Introduction and Breeding Center of Aquaculture, Nanning, 530001, China
| | - Si-Ping Deng
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524088, China
| | - Chun-Hua Zhu
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524088, China
| | - Guang-Li Li
- Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China.
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy culture, Zhanjiang, 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524088, China.
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Intronic Enhancer Is Essential for Nr5a1 Expression in the Pituitary Gonadotrope and for Postnatal Development of Male Reproductive Organs in a Mouse Model. Int J Mol Sci 2022; 24:ijms24010192. [PMID: 36613635 PMCID: PMC9820228 DOI: 10.3390/ijms24010192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Nuclear receptor subfamily 5 group A member 1 (NR5A1) is expressed in the pituitary gonadotrope and regulates their differentiation. Although several regulatory regions were implicated in Nr5a1 gene expression in the pituitary gland, none of these regions have been verified using mouse models. Furthermore, the molecular functions of NR5A1 in the pituitary gonadotrope have not been fully elucidated. In the present study, we generated mice lacking the pituitary enhancer located in the 6th intron of the Nr5a1 gene. These mice showed pituitary gland-specific disappearance of NR5A1, confirming the functional importance of the enhancer. Enhancer-deleted male mice demonstrated no defects at fetal stages. Meanwhile, androgen production decreased markedly in adult, and postnatal development of reproductive organs, such as the seminal vesicle, prostate, and penis was severely impaired. We further performed transcriptomic analyses of the whole pituitary gland of the enhancer-deleted mice and controls, as well as gonadotropes isolated from Ad4BP-BAC-EGFP mice. These analyses identified several genes showing gonadotrope-specific, NR5A1-dependent expressions, such as Spp1, Tgfbr3l, Grem1, and Nr0b2. These factors are thought to function downstream of NR5A1 and play important roles in reproductive organ development through regulation of pituitary gonadotrope functions.
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Li Y, Liang W, Han Y, Zhao W, Wang S, Qin C. Triterpenoids and Polysaccharides from Ganoderma lucidum Improve the Histomorphology and Function of Testes in Middle-Aged Male Mice by Alleviating Oxidative Stress and Cellular Apoptosis. Nutrients 2022; 14:nu14224733. [PMID: 36432421 PMCID: PMC9696538 DOI: 10.3390/nu14224733] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
Aging is an inevitable physiological process accompanied by a decline in body physiology, including male fertility. A preparation from Ganoderma lucidum (GL) containing triterpenes and polysaccharides has been shown to have anti-aging properties. In the current study, the effects of GL on mating ability, testosterone secretion, and testicular structure and function were observed in middle-aged male mice. The GL preparation was administered orally to mice for 2 to 5 months, and then behavioral, serological, and histopathological examinations were performed. Results showed that in the GL group of mice, the mating latency was shortened, the number of pursuits within 20 min was increased, and the mating success rate was higher compared to control mice. Additionally, the levels of serum testosterone, cell proliferation (Ki67), and sperm-specific lactate dehydrogenase (LDH)-C4 were increased, while the levels of senescence-related protein p16 and cellular apoptosis were decreased in GL mice. Testicular spermatogenic cells and sperm and stromal cells were reduced and exhibited structural disorder in 11- and 14-month-old control mice, while these changes were improved compared to age-matched mice receiving the GL preparation. Furthermore, the levels of reactive oxygen species (ROS), malondialdehyde (MDA), and the pro-apoptotic protein Bax were decreased, while the anti-apoptotic protein Bcl-2 was increased in GL mice. Finally, the mitochondrial structure was relatively complete in GL mice compared to controls. Therefore, GL has the potential to improve testicular structure and function in middle-aged male mice by alleviating oxidative stress, maintaining mitochondrial homeostasis, and reducing cellular apoptosis.
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Affiliation(s)
- Yanhong Li
- Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China
- NHC Key Laboratory of Human Diseases Comparative Medicine, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- National Human Diseases Animal Model Resource Center, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
| | - Wei Liang
- Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China
- NHC Key Laboratory of Human Diseases Comparative Medicine, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- National Human Diseases Animal Model Resource Center, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
| | - Yunlin Han
- Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China
- NHC Key Laboratory of Human Diseases Comparative Medicine, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- National Human Diseases Animal Model Resource Center, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
| | - Wenjie Zhao
- Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China
- NHC Key Laboratory of Human Diseases Comparative Medicine, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- National Human Diseases Animal Model Resource Center, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
| | - Siyuan Wang
- Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China
- NHC Key Laboratory of Human Diseases Comparative Medicine, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- National Human Diseases Animal Model Resource Center, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
| | - Chuan Qin
- Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China
- NHC Key Laboratory of Human Diseases Comparative Medicine, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- National Human Diseases Animal Model Resource Center, the Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China
- Correspondence: ; Tel.: +86-010-87778141
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