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Hu Y, Aljumaah MR, Azcarate-Peril MA. Galacto-Oligosaccharides and the Elderly Gut: Implications for Immune Restoration and Health. Adv Nutr 2024; 15:100263. [PMID: 38897384 DOI: 10.1016/j.advnut.2024.100263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/23/2024] [Accepted: 06/13/2024] [Indexed: 06/21/2024] Open
Abstract
The increasing prevalence of noncommunicable diseases in the aging population has been correlated with a decline in innate and adaptive immune responses; hence, it is imperative to identify approaches to improve immune function, prevent related disorders, and reduce or treat age-associated health complications. Prebiotic supplementation is a promising approach to modulate the gut microbiome and immune system, offering a potential strategy to maintain the integrity of immune function in older individuals. This review summarizes the current research on prebiotic galacto-oligosaccharide (GOS) immunomodulatory mechanisms mediated by bacterial-derived metabolites, including short-chain fatty acids and secondary bile acids, to maintain immune homeostasis. The potential applications of GOS as immunotherapy for age-related disease prevention in older individuals are also highlighted. This aligns with the global shift toward proactive healthcare and emphasizes the significance of early intervention in directing an individual's health trajectory.
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Affiliation(s)
- Yunan Hu
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, United States; UNC Microbiome Core, Center for Gastrointestinal Biology and Disease (CGIBD), School of Medicine, University of North Carolina, Chapel Hill, NC, United States
| | - Mashael R Aljumaah
- UNC Microbiome Core, Center for Gastrointestinal Biology and Disease (CGIBD), School of Medicine, University of North Carolina, Chapel Hill, NC, United States; Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States; Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Maria Andrea Azcarate-Peril
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, United States; UNC Microbiome Core, Center for Gastrointestinal Biology and Disease (CGIBD), School of Medicine, University of North Carolina, Chapel Hill, NC, United States.
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Long H, Zhang H, Ran L, Xiang L, Xie P, Zou L, Yi L, Tang X, Chen L, Li Q, Zhao H. Bioinformatics analysis and experimental validation reveal the anti-ferroptosis effect of FZD7 in acute kidney injury. Biochem Biophys Res Commun 2024; 692:149359. [PMID: 38071893 DOI: 10.1016/j.bbrc.2023.149359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND Ferroptosis plays an important role in acute kidney injury (AKI), but the specific regulatory mechanism of ferroptosis in AKI remains unclear. This study is expected to analyze ferroptosis-related genes (FRGs) in AKI and explore their underlying mechanisms. RESULTS A total of 479 differentially expressed genes (DEGs), including 196 up-regulated genes and 283 down-regulated genes were identified in the AKI chip GSE30718. 341 FRGs were obtained from the Genecard, OMIM and NCBI database. Totally 11 ferroptosis-related DEGs in AKI were found, in which 7 genes (CD44, TIGAR, RB1, LCN2, JUN, ARNTL, ACSL4) were up-regulated and 4 genes (FZD7, EP300, FOXC1, DLST) were down-regulated. Three core genes (FZD7, JUN, EP300) were obtained by PPI and KEGG analysis, among which the function of FZD7 in AKI is unclear. The WGCNA analysis found that FZD7 belongs to a module that was negatively correlated with AKI. Further basic experiments confirmed that FZD7 is down-regulated in mouse model of ischemia-reperfusion-AKI and cellular model of hypoxia-reoxygenation(H/R). In addition, knockdown of FZD7 could further aggravate the down-regulation of cell viability induced by H/R and Erastin, while overexpression of FZD7 can rescue its down-regulation to some extent. Furthermore, we verified that knockdown of FZD7 decreased the expression of GPX4 and overexpression of FZD7 increased the expression of GPX4, suggesting that FZD7 may inhibit ferroptosis by regulating the expression of GPX4 and plays a vital role in the onset and development of AKI. CONCLUSIONS This article revealed the anti-ferroptosis effect of FZD7 in acute kidney injury through bioinformatics analysis and experimental validation, suggesting that FZD7 is a promising target for AKI and provided more evidence about the vital role of ferroptosis in AKI.
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Affiliation(s)
- Huanping Long
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Huhai Zhang
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Lingyu Ran
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Lunli Xiang
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Pan Xie
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Liying Zou
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Li Yi
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Xiaopeng Tang
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Liping Chen
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Qixuan Li
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China
| | - Hongwen Zhao
- Department of Kidney, The First Affiliated Hospital of Army Medical University, Gaotanyan Zhengjie, Shapingba District, Chongqing, 400038, China.
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