1
|
Wang Y, Wang Q, Dou S, Zhou Q, Xie L. Sleep deprivation induces corneal endothelial dysfunction by downregulating Bmal1. BMC Ophthalmol 2024; 24:268. [PMID: 38907352 PMCID: PMC11191275 DOI: 10.1186/s12886-024-03524-4] [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: 04/03/2023] [Accepted: 06/12/2024] [Indexed: 06/23/2024] Open
Abstract
BACKGROUND Sleep deprivation (SD) is a common public health problem that contributes to various physiological disorders and increases the risk of ocular diseases. However, whether sleep loss can damage corneal endothelial function remains unclear. This study aimed to determine the effect and possible mechanism of SD on the corneal endothelium. METHODS Male C57BL/6J mice were subjected to establish SD models. After 10 days, quantitative RT-PCR (qRT-PCR) and western blot or immunostaining for the expression levels of zonula occludens-1 (ZO-1), ATPase Na+/K + transporting subunit alpha 1 (Atp1a1), and core clock genes in the corneal endothelium were evaluated. Reactive oxygen species staining and mitochondrial abundance characterized the mitochondrial function. The regulatory role of Bmal1 was confirmed by specifically knocking down or overexpressing basic helix-loop-helix ARNT like 1 protein (Bmal1) in vivo. In vitro, a mitochondrial stress test was conducted on cultured human corneal endothelial cells upon Bmal1 knockdown. RESULTS SD damaged the barrier and pump functions of mouse corneal endothelium, accompanied by mitochondrial dysfunction. Interestingly, SD dramatically downregulated the core clock gene Bmal1 expression level. Bmal1 knockdown disrupted corneal endothelial function, while overexpression of Bmal1 ameliorated the dysfunction induced by SD. Mitochondrial bioenergetic deficiency mediated by Bmal1 was an underlying mechanism for SD induced corneal endothelial dysfunction. CONCLUSION The downregulation of Bmal1 expression caused by SD led to corneal endothelial dysfunction via impairing mitochondrial bioenergetics. Our findings offered insight into how SD impairs the physiological function of the corneal endothelium and expanded the understanding of sleep loss leading to ocular diseases.
Collapse
Affiliation(s)
- Yani Wang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, 5 Yan er dao Road, Qingdao, 266071, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong First Medical University, Shandong, China
- School of ophthalmology, Shandong First Medical University, Shandong, China
| | - Qun Wang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, 5 Yan er dao Road, Qingdao, 266071, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong First Medical University, Shandong, China
- School of ophthalmology, Shandong First Medical University, Shandong, China
| | - Shengqian Dou
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, 5 Yan er dao Road, Qingdao, 266071, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong First Medical University, Shandong, China
- School of ophthalmology, Shandong First Medical University, Shandong, China
| | - Qingjun Zhou
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, 5 Yan er dao Road, Qingdao, 266071, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong First Medical University, Shandong, China
- School of ophthalmology, Shandong First Medical University, Shandong, China
| | - Lixin Xie
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, 5 Yan er dao Road, Qingdao, 266071, China.
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong First Medical University, Shandong, China.
- School of ophthalmology, Shandong First Medical University, Shandong, China.
| |
Collapse
|
2
|
Xue Y, Xu P, Hu Y, Liu S, Yan R, Liu S, Li Y, Liu J, Fu T, Li Z. Stress systems exacerbate the inflammatory response after corneal abrasion in sleep-deprived mice via the IL-17 signaling pathway. Mucosal Immunol 2024; 17:323-345. [PMID: 38428739 DOI: 10.1016/j.mucimm.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/03/2024]
Abstract
Sleep deprivation (SD) has a wide range of adverse health effects. However, the mechanisms by which SD influences corneal pathophysiology and its post-wound healing remain unclear. This study aimed to examine the basic physiological characteristics of the cornea in mice subjected to SD and determine the pathophysiological response to injury after corneal abrasion. Using a multi-platform water environment method as an SD model, we found that SD leads to disturbances of corneal proliferative, sensory, and immune homeostasis as well as excessive inflammatory response and delayed repair after corneal abrasion by inducing hyperactivation of the sympathetic nervous system and hypothalamic-pituitary-adrenal axis. Pathophysiological changes in the cornea mainly occurred through the activation of the IL-17 signaling pathway. Blocking both adrenergic and glucocorticoid synthesis and locally neutralizing IL-17A significantly improved corneal homeostasis and the excessive inflammatory response and delay in wound repair following corneal injury in SD-treated mice. These results indicate that optimal sleep quality is essential for the physiological homeostasis of the cornea and its well-established repair process after injury. Additionally, these observations provide potential therapeutic targets to ameliorate SD-induced delays in corneal wound repair by inhibiting or blocking the activation of the stress system and its associated IL-17 signaling pathway.
Collapse
Affiliation(s)
- Yunxia Xue
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Pengyang Xu
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China; Department of Pathology, Nanyang Second General Hospital, Nanyang City, Henan, China
| | - Yu Hu
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China
| | - Sijing Liu
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ruyu Yan
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Shutong Liu
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China
| | - Yan Li
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jun Liu
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ting Fu
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Zhijie Li
- International Ocular Surface Research Center, Institute of Ophthalmology and Key Laboratory for Regenerative Medicine, Jinan University Medical School, Guangzhou, China; Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China.
| |
Collapse
|
3
|
Huang S, Zhang W, Xuan S, Si H, Huang D, Ba M, Qi D, Pei X, Lu D, Li Z. Chronic sleep deprivation impairs retinal circadian transcriptome and visual function. Exp Eye Res 2024; 243:109907. [PMID: 38649019 DOI: 10.1016/j.exer.2024.109907] [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: 02/07/2024] [Revised: 04/07/2024] [Accepted: 04/18/2024] [Indexed: 04/25/2024]
Abstract
Sleep loss is common in modern society and is increasingly associated with eye diseases. However, the precise effects of sleep loss on retinal structure and function, particularly on the retinal circadian system, remain largely unexplored. This study investigates these effects using a chronic sleep deprivation (CSD) model in mice. Our investigation reveals that CSD significantly alters the retinal circadian transcriptome, leading to remarkable changes in the temporal patterns of enriched pathways. This perturbation extends to metabolic and immune-related transcriptomes, coupled with an accumulation of reactive oxygen species in the retina. Notably, CSD rhythmically affects the thickness of the ganglion cell complex, along with diurnal shifts in microglial migration and morphology within the retina. Most critically, we observe a marked decrease in both scotopic and photopic retinal function under CSD conditions. These findings underscore the broad impact of sleep deprivation on retinal health, highlighting its role in altering circadian gene expression, metabolism, immune response, and structural integrity. Our study provides new insights into the broader impact of sleep loss on retinal health.
Collapse
Affiliation(s)
- Shenzhen Huang
- Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, China; Department of Ophthalmology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, China
| | - Wenxiao Zhang
- Department of Ophthalmology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, China
| | - Shuting Xuan
- Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongli Si
- Department of Ophthalmology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, China
| | - Duliurui Huang
- Department of Ophthalmology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, China
| | - Mengru Ba
- Department of Ophthalmology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, China
| | - Di Qi
- Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoting Pei
- Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Dingli Lu
- Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhijie Li
- Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, China; Department of Ophthalmology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, China.
| |
Collapse
|
4
|
Zhou N, Chen T, You Q, Chen D, Liu L, Hu K. Enterovirus A71 infection-induced dry eye-like symptoms by damaging the lacrimal glands. Front Cell Infect Microbiol 2024; 14:1340075. [PMID: 38628549 PMCID: PMC11018897 DOI: 10.3389/fcimb.2024.1340075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 03/18/2024] [Indexed: 04/19/2024] Open
Abstract
Purpose To determine the effects of EV-A71 (Enterovirus A71) infection on ocular surface and its mechanism. Methods AG6 mice aged two to three weeks were randomly divided into control and EV-A71 infected groups. Slit-lamp observation, fluorescein staining, and phenol red thread test were used to assess symptoms of ocular surface at 4 dpi (days post infection). The pathological changes of cornea and lacrimal gland were observed by H&E staining, PAS staining, TUNEL assay, IHC staining and qRT-PCR. Corneas and lacrimal glands from mice were obtained and processed for RNA sequencing analysis. Newly diagnosed HFMD patients caused by EV-A71 were recruited and ensured they met the inclusion criteria. Ocular surface parameters (TMH and NIKBUT) were measured using the OCULUS Keratograph 5M. Tear samples were taken to examine Cxcl1 and IL-6 levels through the ELISA method. Results Mice studies revealed that EV-A71 infection caused tear film instability, decreased tear secretions, decreased in lacrimal gland size, and distinct goblet cell loss. It also resulted in increased large vacuoles within acinar cells and structural damage in lacrimal gland. Apart from minor damage to the epidermis, there was no obvious inflammatory changes or apoptosis in the cornea. However, there were significant inflammatory injury and apoptosis in the lacrimal gland. RNA-seq analysis showed IL-17 and NF-κB signaling pathways were activated in the lacrimal glands of mice infected with EV-A71. In HFMD patients, the THM was in a low range and NITBUT was significantly shorter than the control group by Oculus Keratograph 5M. ELISA assay showed a higher tear Cxcl1 and IL-6 level in them. Conclusion EV-A71 infection affected lacrimal gland structure and function and induced dry eye-like symptoms.
Collapse
Affiliation(s)
- Nan Zhou
- Department of Ophthalmology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Taige Chen
- Department of Ophthalmology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
- Department of Rheumatology and Immunology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Qiao You
- Center for Public Health Research, Medical School of Nanjing University, Nanjing, China
| | - Deyan Chen
- Center for Public Health Research, Medical School of Nanjing University, Nanjing, China
| | - Lifei Liu
- Department of Infectious Disease, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Kai Hu
- Department of Ophthalmology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| |
Collapse
|
5
|
Fan Q, Yan R, Li Y, Lu L, Liu J, Li S, Fu T, Xue Y, Liu J, Li Z. Exploring Immune Cell Diversity in the Lacrimal Glands of Healthy Mice: A Single-Cell RNA-Sequencing Atlas. Int J Mol Sci 2024; 25:1208. [PMID: 38279208 PMCID: PMC10816500 DOI: 10.3390/ijms25021208] [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: 11/26/2023] [Revised: 01/05/2024] [Accepted: 01/09/2024] [Indexed: 01/28/2024] Open
Abstract
The lacrimal gland is responsible for maintaining the health of the ocular surface through the production of tears. However, our understanding of the immune system within the lacrimal gland is currently limited. Therefore, in this study, we utilized single-cell RNA sequencing and bioinformatic analysis to identify and analyze immune cells and molecules present in the lacrimal glands of normal mice. A total of 34,891 cells were obtained from the lacrimal glands of mice and classified into 18 distinct cell clusters using Seurat clustering. Within these cell populations, 26 different immune cell subpopulations were identified, including T cells, innate lymphocytes, macrophages, mast cells, dendritic cells, and B cells. Network analysis revealed complex cell-cell interactions between these immune cells, with particularly significant interactions observed among T cells, macrophages, plasma cells, and dendritic cells. Interestingly, T cells were found to be the main source of ligands for the Thy1 signaling pathway, while M2 macrophages were identified as the primary target of this pathway. Moreover, some of these immune cells were validated using immunohistological techniques. Collectively, these findings highlight the abundance and interactions of immune cells and provide valuable insights into the complexity of the lacrimal gland immune system and its relevance to associated diseases.
Collapse
Affiliation(s)
- Qiwei Fan
- Department of Pathology, School of Medicine, Jinan University, Guangzhou 510632, China; (Q.F.); (J.L.)
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
| | - Ruyu Yan
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Yan Li
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Liyuan Lu
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Jiangman Liu
- Department of Pathology, School of Medicine, Jinan University, Guangzhou 510632, China; (Q.F.); (J.L.)
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
| | - Senmao Li
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Ting Fu
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Yunxia Xue
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Jun Liu
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| | - Zhijie Li
- International Ocular Surface Research Center, Key Laboratory for Regenerative Medicine, Institute of Ophthalmology, Jinan University, Guangzhou 510632, China; (R.Y.); (Y.L.); (L.L.); (S.L.); (T.F.); (Y.X.); (J.L.)
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou 510630, China
| |
Collapse
|
6
|
Ye S, Wang Z, Ma JH, Ji S, Peng Y, Huang Y, Chen J, Tang S. Diabetes Reshapes the Circadian Transcriptome Profile in Murine Retina. Invest Ophthalmol Vis Sci 2023; 64:3. [PMID: 37788001 PMCID: PMC10552875 DOI: 10.1167/iovs.64.13.3] [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: 07/04/2023] [Accepted: 09/09/2023] [Indexed: 10/04/2023] Open
Abstract
Purpose Diabetic retinopathy (DR) is a common complication of diabetes and has a high prevalence. Dysregulation of circadian rhythmicity is associated with the development of DR. This research aimed to investigate rhythmical transcriptome alterations in the retina of diabetic mice. Methods C57BL/6J mice were used to establish a diabetes model by intraperitoneal injection of streptozotocin (STZ). After 12 weeks, retinas were collected continuously at 4-hour intervals over 1 day. Total RNA was extracted from normal and STZ-treated retinas and RNA sequencing was performed. Meta2d algorithm, Kyoto Encyclopedia of Genes, Phase Set Enrichment Analysis, and time-series cluster analysis were used to identify, analyze and annotate the composition, phase, and molecular functions of rhythmic transcripts in retinas. Results The retina exhibited powerful transcriptome rhythmicity. STZ-induced diabetes markedly modified the transcriptome characteristics of the circadian transcriptome in the retina, including composition, phase, and amplitude. Moreover, the diabetic mice led to re-organized temporal and clustering enrichment pathways in space and time and affected core clock machinery. Conclusions Diabetes impairs the circadian rhythm of the transcriptomic profile of retinas. This study offers new perspectives on the negative effects of diabetes on the retina, which may provide important information for the development of new treatments for DR.
Collapse
Affiliation(s)
- Suna Ye
- AIER Eye Hospital, Jinan University, Guangzhou, China
- AIER Eye Institute, Changsha, China
| | | | | | | | | | | | - Jiansu Chen
- AIER Eye Hospital, Jinan University, Guangzhou, China
- AIER Eye Institute, Changsha, China
| | - Shibo Tang
- AIER Eye Hospital, Jinan University, Guangzhou, China
- AIER Eye Institute, Changsha, China
| |
Collapse
|
7
|
Hao S, Chen Z, Gu Y, Chen L, Sheng F, Xu Y, Wu D, Han Y, Lu B, Chen S, Zhao W, Yin H, Wang X, Riazuddin SA, Lou X, Fu Q, Yao K. Long-term PM2.5 exposure disrupts corneal epithelial homeostasis by impairing limbal stem/progenitor cells in humans and rat models. Part Fibre Toxicol 2023; 20:36. [PMID: 37759270 PMCID: PMC10523760 DOI: 10.1186/s12989-023-00540-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/13/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Limbal stem/progenitor cells (LSPCs) play a crucial role in maintaining corneal health by regulating epithelial homeostasis. Although PM2.5 is associated with the occurrence of several corneal diseases, its effects on LSPCs are not clearly understood. METHODS In this study, we explored the correlation between PM2.5 exposure and human limbal epithelial thickness measured by Fourier-domain Optical Coherence Tomography in the ophthalmologic clinic. Long- and short-term PM2.5 exposed-rat models were established to investigate the changes in LSPCs and the associated mechanisms. RESULTS We found that people living in regions with higher PM2.5 concentrations had thinner limbal epithelium, indicating the loss of LSPCs. In rat models, long-term PM2.5 exposure impairs LSPCs renewal and differentiation, manifesting as corneal epithelial defects and thinner epithelium in the cornea and limbus. However, LSPCs were activated in short-term PM2.5-exposed rat models. RNA sequencing implied that the circadian rhythm in LSPCs was perturbed during PM2.5 exposure. The mRNA level of circadian genes including Per1, Per2, Per3, and Rev-erbα was upregulated in both short- and long-term models, suggesting circadian rhythm was involved in the activation and dysregulation of LSPCs at different stages. PM2.5 also disturbed the limbal microenvironment as evidenced by changes in corneal subbasal nerve fiber density, vascular density and permeability, and immune cell infiltration, which further resulted in the circadian mismatches and dysfunction of LSPCs. CONCLUSION This study systematically demonstrates that PM2.5 impairs LSPCs and their microenvironment. Moreover, we show that circadian misalignment of LSPCs may be a new mechanism by which PM2.5 induces corneal diseases. Therapeutic options that target circadian rhythm may be viable options for improving LSPC functions and alleviating various PM2.5-associated corneal diseases.
Collapse
Affiliation(s)
- Shengjie Hao
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Zhijian Chen
- Department of Environmental and Occupational Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, Zhejiang Province, China
| | - Yuzhou Gu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Lu Chen
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Feiyin Sheng
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Yili Xu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Di Wu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Yu Han
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Bing Lu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Shuying Chen
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Wei Zhao
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Houfa Yin
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China
| | - Xiaofeng Wang
- Department of Environmental and Occupational Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, Zhejiang Province, China
| | - S Amer Riazuddin
- The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Xiaoming Lou
- Department of Environmental and Occupational Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, Zhejiang Province, China.
| | - Qiuli Fu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China.
| | - Ke Yao
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Zhejiang Provincial Key Lab of Ophthalmology, Zhejiang University, Hangzhou, 310009, Zhejiang Province, China.
| |
Collapse
|
8
|
Liu J, Si H, Huang D, Lu D, Zou S, Qi D, Pei X, Huang S, Li Z. Mechanisms of Extraorbital Lacrimal Gland Aging in Mice: An Integrative Analysis of the Temporal Transcriptome. Invest Ophthalmol Vis Sci 2023; 64:18. [PMID: 37695604 PMCID: PMC10501490 DOI: 10.1167/iovs.64.12.18] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 08/16/2023] [Indexed: 09/12/2023] Open
Abstract
Purpose This study used high-throughput RNA sequencing (RNA-Seq) and bioinformatics analysis to investigate the altered transcriptome profile of aging lacrimal glands in mice that occurs over the course of a 24-hour cycle. Methods Male C57BL/6J mice aged 12 weeks (young) and 20 months (aging) were housed in a pathogen-free setting with a 12-hour light/12-hour dark cycle. Throughout a 24-hour cycle, mouse extraorbital lacrimal glands (ELGs) were collected at eight time points at three-hour intervals. To prepare for the high-throughput RNA-Seq, whole mRNA was extracted. Differentially expressed genes (DEGs) in the young and aging groups were subjected to bioinformatic analysis based on diurnal patterns. Furthermore, the cell populations in which significant DEGs express and signaling pathways occur were validated at the single-cell RNA sequencing (scRNA-seq) level. Results The total transcriptome composition was significantly altered in aging ELGs compared with that in young mouse ELGs at eight time points during the 24-hour cycle, with 864 upregulated and 228 downregulated DEGs, which were primarily enriched in inflammatory pathways. Further comparative analysis of the point-to-point transcriptome revealed that aging ELGs underwent alterations in the temporal transcriptome profile in several pathways, including the inflammation-related, metabolism-related, mitochondrial bioenergetic function-associated, synaptome neural activity-associated, cell processes-associated, DNA processing-associated and fibrosis-associated pathways. Most of these pathways occurred separately in distinct cell populations. Conclusions Transcriptome profiles of aging lacrimal glands undergo considerable diurnal time-dependent changes; this finding offers a comprehensive source of information to better understand the pathophysiology of lacrimal gland aging and its underlying mechanisms.
Collapse
Affiliation(s)
- Jiangman Liu
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Hongli Si
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Duliurui Huang
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Dingli Lu
- Henan Eye Institute, Henan Eye Hospital, and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Sen Zou
- Henan Eye Institute, Henan Eye Hospital, and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Di Qi
- Henan Eye Institute, Henan Eye Hospital, and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Xiaoting Pei
- Henan Eye Institute, Henan Eye Hospital, and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Shenzhen Huang
- Henan Eye Institute, Henan Eye Hospital, and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Zhijie Li
- Henan Eye Institute, Henan Eye Hospital, and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| |
Collapse
|
9
|
Zou S, Liu J, Si H, Huang D, Qi D, Pei X, Lu D, Huang S, Li Z. High-fat intake reshapes the circadian transcriptome profile and metabolism in murine meibomian glands. Front Nutr 2023; 10:1146916. [PMID: 37006922 PMCID: PMC10062204 DOI: 10.3389/fnut.2023.1146916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023] Open
Abstract
BackgroundNutritional and food components reshape the peripheral clock and metabolism. However, whether food challenges affect the circadian clock and metabolism of meibomian glands (MGs) has not been fully explored. This study was designed to analyze alterations in the rhythmic transcriptome and metabolism of MGs of murine fed a balanced diet or a high-fat diet (HFD).MethodsMale C57BL/6J mice were maintained on a 12/12 h light/dark cycle and fed ad libitum on normal chow (NC) or HFD for 4 weeks. MGs were collected from sacrificed animals at 3-h intervals throughout a 24-h circadian cycle. The circadian transcriptome of MGs was analyzed via bioinformatics approaches using high-throughput RNA sequencing (RNA-seq). In addition, circadian oscillations of lipid components in MGs were analyzed.ResultsMeibomian glands displayed robust transcriptome rhythmicity. HFD feeding significantly altered the circadian transcriptome profile of MGs—including composition and phase—and spatiotemporally affected the enriched signaling pathways. In addition, HFD feeding significantly altered the normal rhythmic oscillations of lipid components in MGs.ConclusionOur data show that HFD significantly affects MGs’ rhythmicity, which reveals a high sensitivity of MGs’ clocks to lipid composition in food.
Collapse
Affiliation(s)
- Sen Zou
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Jiangman Liu
- Department of Ophthalmology, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Hongli Si
- Department of Ophthalmology, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Duliurui Huang
- Department of Ophthalmology, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Di Qi
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Xiaoting Pei
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Dingli Lu
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Shenzhen Huang
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Zhijie Li
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
- *Correspondence: Zhijie Li, ,
| |
Collapse
|
10
|
Chen Q, Qu M, Zhang B, Zhang S, Qi X, Qiao Y, Zhou Q. Involvement of aberrant acinar cell proliferation in scopolamine-induced dry eye mice. Exp Eye Res 2023; 227:109391. [PMID: 36696946 DOI: 10.1016/j.exer.2023.109391] [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: 09/11/2022] [Revised: 12/10/2022] [Accepted: 01/19/2023] [Indexed: 01/23/2023]
Abstract
Dry eye is a multifactorial disease that causes dryness, inflammation and damage of ocular surface. Subcutaneous injection of the muscarinic cholinergic antagonist scopolamine under desiccating stress reduces tear production and induces dry eye symptoms in mice. However, the expression profile and pathogenic changes of the lacrimal gland remain incompletely understood. In the present study, we performed comparative transcriptomic analysis of lacrimal glands from the control and scopolamine-treated mice. Primary analysis identified 677 upregulated genes and 269 downregulated genes in the lacrimal gland of mice with scopolamine treatment. Unexpectedly, KEGG pathway and hierarchical clustering analysis showed the enrichment of "DNA replication" and "cell cycle" categories in the upregulated genes. Subsequently, we confirmed that the acinar cells were the major proliferating cells of lacrimal gland, which exhibited significant increasing of the proliferating cell nuclear antigen (PCNA) expression after scopolamine treatment, accompanied with the upregulation of DNA damage marker γ-H2AX. More importantly, both prophylactic and therapeutic administration of the cyclin-dependent kinase (CDK) inhibitor AT7519 rescued the tear reduction and alleviated dry eye severity in the scopolamine-treated mice, including corneal epithelial barrier function, lacrimal and corneal inflammation, and conjunctival goblet cell density. Therefore, we conclude that aberrant acinar cell proliferation is involved in the scopolamine-induced tear reduction and dry eye onset, which can be improved by AT7519 treatment.
Collapse
Affiliation(s)
- Qing Chen
- School of Clinical Medicine, Weifang Medical University, Weifang, Shandong, 261053, China; State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China
| | - Mingli Qu
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China; Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong, 266071, China
| | - Bin Zhang
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China; Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong, 266071, China
| | - Sai Zhang
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China
| | - Xia Qi
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China; Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong, 266071, China
| | - Yujie Qiao
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China
| | - Qingjun Zhou
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong, 266071, China; Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong, 266071, China.
| |
Collapse
|