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Zhao L, Wu Q, Long Y, Qu Q, Qi F, Liu L, Zhang L, Ai K. microRNAs: critical targets for treating rheumatoid arthritis angiogenesis. J Drug Target 2024; 32:1-20. [PMID: 37982157 DOI: 10.1080/1061186x.2023.2284097] [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: 08/07/2023] [Accepted: 11/09/2023] [Indexed: 11/21/2023]
Abstract
Vascular neogenesis, an early event in the development of rheumatoid arthritis (RA) inflammation, is critical for the formation of synovial vascular networks and plays a key role in the progression and persistence of chronic RA inflammation. microRNAs (miRNAs), a class of single-stranded, non-coding RNAs with approximately 21-23 nucleotides in length, regulate gene expression by binding to the 3' untranslated region (3'-UTR) of specific mRNAs. Increasing evidence suggests that miRNAs are differently expressed in diseases associated with vascular neogenesis and play a crucial role in disease-related vascular neogenesis. However, current studies are not sufficient and further experimental studies are needed to validate and establish the relationship between miRNAs and diseases associated with vascular neogenesis, and to determine the specific role of miRNAs in vascular development pathways. To better treat vascular neogenesis in diseases such as RA, we need additional studies on the role of miRNAs and their target genes in vascular development, and to provide more strategic references. In addition, future studies can use modern biotechnological methods such as proteomics and transcriptomics to investigate the expression and regulatory mechanisms of miRNAs, providing a more comprehensive and in-depth research basis for the treatment of related diseases such as RA.
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Affiliation(s)
- Lingyun Zhao
- College of Acupuncture, Tuina and Rehabilitation, Hunan University of Chinese Medicine, Changsha, China
| | - Qingze Wu
- College of Acupuncture, Tuina and Rehabilitation, Hunan University of Chinese Medicine, Changsha, China
| | - Yiying Long
- Hunan Traditional Chinese Medical College, Zhuzhou, China
| | - Qirui Qu
- College of Acupuncture, Tuina and Rehabilitation, Hunan University of Chinese Medicine, Changsha, China
| | - Fang Qi
- College of Acupuncture, Tuina and Rehabilitation, Hunan University of Chinese Medicine, Changsha, China
| | - Li Liu
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Liang Zhang
- College of Acupuncture, Tuina and Rehabilitation, Hunan University of Chinese Medicine, Changsha, China
| | - Kun Ai
- College of Acupuncture, Tuina and Rehabilitation, Hunan University of Chinese Medicine, Changsha, China
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Shi Q, Wang Q, Mao K, Liu Z, Wang R. MicroRNA-2861 regulates the proliferation and apoptosis of human retinal vascular endothelial cells treated with high glucose by targeting NDUFB7. Heliyon 2024; 10:e35663. [PMID: 39170385 PMCID: PMC11336858 DOI: 10.1016/j.heliyon.2024.e35663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 07/31/2024] [Accepted: 08/01/2024] [Indexed: 08/23/2024] Open
Abstract
Objectives Although anti-VEGF and retinal laser photocoagulation are two therapeutic modalities that have been used in the clinical treatment of diabetic retinopathy (DR), it is unknown how these modalities target vascular endothelial function in DR. Methods We first downloaded and analyzed the differential genes in two DR-related datasets, GSE60436 and GSE53257. The differential gene expression was then verified using RT-qPCR, and the most upregulated gene, NDUFB7, was selected for subsequent experiments. Subsequently, the role of NDUFB7 silencing and enforced expression on the proliferation and apoptosis of HRVECs was explored using CCK-8 assay, EDU proliferation assay and apoptotic TUNEL staining. In addition, the upstream potential miRNAs of NDUFB7 were predicted online using the Targetscan website. RT-qPCR, Western blotting (WB), and dual luciferase gene reporter assay were used to confirm the targeting connection between miR-2861 and NDUFB7. Finally, miR-2861 expression after high glucose (HG) treatment and its effect on proliferation and apoptosis of HRVECs under HG were investigated. Results In this study, we first downloaded and analyzed the differential genes in two DR-related datasets, GSE60436 and GSE53257. We found that TUFM, PRELID1, MRPL32, NDUFB7, MRPL4, MRPL40, HSD17B10 and SLC25A13 were upregulated in DR, and RT-qPCR showed that NDUFB7 was most upregulated. Subsequent CCK-8 assay, EDU proliferation assay and TUNEL staining showed that up-picked NDUFB7 promotes proliferation and inhibits apoptosis of HRVECs. In addition, the upstream potential miRNAs of NDUFB7 were predicted online using the Targetscan website. RT-qPCR, Western blotting (WB), and dual luciferase gene reporter assay confirmed the targeting connection between miR-2861 and NDUFB7. Finally, it was observed that miR-2861 can inhibit the proliferation and promote the apoptosis of HRVECs by targeting NDUFB7. Conclusions Our findings showed that upregulated NDUFB7 in DR promotes proliferation and inhibits apoptosis of HRVECs, and miR-2861 can rescue the pathogenic effect of NDUFB7 upregulation by targeting NDUFB7.
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Affiliation(s)
- Qiqin Shi
- Department of Ophthalmology, Ningbo Hangzhou Bay Hospital, Ningbo, Zhejiang, 315000, China
| | - Qiangsheng Wang
- Department of Hematology, Ningbo Hangzhou Bay Hospital, Ningbo, Zhejiang, 315000, China
| | - Ke Mao
- Department of Ophthalmology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Zhuoran Liu
- Department of Ophthalmology, Ningbo Hangzhou Bay Hospital, Ningbo, Zhejiang, 315000, China
| | - Ruobing Wang
- Department of Ophthalmology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
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Oh S, Kim C, Park YH. Decrease of alpha-crystallin A by miR-325-3p in retinal cells under blue light exposure. Mol Cells 2024; 47:100091. [PMID: 38997088 PMCID: PMC11342174 DOI: 10.1016/j.mocell.2024.100091] [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: 03/19/2024] [Revised: 06/26/2024] [Accepted: 07/08/2024] [Indexed: 07/14/2024] Open
Abstract
Exposure to blue light can lead to retinal degeneration, causing adverse effects on eye health. Although the loss of retinal cells due to blue light exposure has been observed, the precise molecular mechanisms underlying this process remain poorly understood. In this study, we investigate the role of alpha-crystallin A (CRYAA) in neuro-retinal degeneration and their regulation by blue light. We observed significant apoptotic cell death in both the retina of rats and the cultured neuro-retinal cells. The expressions of Cryaa mRNA and protein were significantly downregulated in the retina exposed to blue light. We identified that miR-325-3p reduces Cryaa mRNA and protein by binding to its 3'-untranslated region. Upregulation of miR-325-3p destabilized Cryaa mRNA and suppresses CRYAA, whereas downregulation of miR-325-3p increased both expressions. Blue light-induced neuro-retinal cell death was alleviated by CRYAA overexpression. These results highlight the critical role of Cryaa mRNA and miR-325-3p molecular axis in blue light-induced retinal degeneration. Consequently, targeting CRYAA and miR-325-3p presents a potential strategy for protecting against blue light-induced retinal degeneration.
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Affiliation(s)
- Subeen Oh
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul 06591, South Korea
| | - Chongtae Kim
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul 06591, South Korea
| | - Young-Hoon Park
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul 06591, South Korea; Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul 06591, South Korea.
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Zhang W, Zhang M, Ma J, Yao Y, Jiang Y, Huo Q, Jin S, Ji D, Zhao Y, Liu X, Sun H, Xu C, Zhang R. MicroRNA-15b promotes cardiac ischemia injury by the inhibition of Mitofusin 2/PERK pathway. Biochem Pharmacol 2024; 226:116372. [PMID: 38885773 DOI: 10.1016/j.bcp.2024.116372] [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: 12/04/2023] [Revised: 05/05/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024]
Abstract
MicroRNA and mitofusin-2 (Mfn2) play an important role in the myocardial apoptosis induced by acute myocardial infarction (AMI). However, the target relationship and underlying mechanism associated with interorganelle interaction between endoplasmic reticulum (ER) and mitochondria under ischemic condition is not completely clear. MI-induced injury, Mfn2 expression, Mfn2-mediated mitochondrial function and ER stress, and target regulation by miRNA-15b (miR-15b) were evaluated by animal MI and cellular hypoxic models with advanced molecular techniques. The results confirmed that Mfn2 was down-regulated and miR-15b was up-regulated upon the target binding profile under ischemic/hypoxic condition. Our data showed that miR-15b caused cardiac apoptotic injury that was reversed by rAAV9-anti-miR-15b or AMO-15b. The damage effect of miR-15b on Mfn2 expression and mitochondrial function was observed and rescued by rAAV9-anti-miR-15b or AMO-15b. The targeted regulation of miR-15b on Mfn2 was verified by luciferase reporter and microRNA-masking. Importantly, miR-15b-mediated Mfn2 suppression activated PERK/CHOP pathway, by which leads to ER stress and mitochondrial dysfunction, and cardiac apoptosis eventually. In conclusion, our research, for the first time, revealed the missing molecular link in Mfn2 and apoptosis and elucidated that pro-apoptotic miR-15b plays crucial roles during the pathogenesis of AMI through down-regulation of Mfn2 and activation of PERK-mediated ER stress. These findings may provide an opportunity to develop new therapies for prophylaxis and treatment of ischemic heart disease.
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Affiliation(s)
- Wenhao Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Mingyu Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Jiao Ma
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Yuan Yao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Yuan Jiang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Qingji Huo
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Saidi Jin
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Dongni Ji
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Yilin Zhao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Xinqi Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Hao Sun
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Chaoqian Xu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China.
| | - Rong Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150081, China.
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Lin X, Bao M, Zhang X, Qirula S, Jiao C, Zhang D, Han J. Study on the bioactive ingredients and mechanism of Huangqi against diabetic retinopathy based on network pharmacology and experimental verification. J Chin Med Assoc 2024; 87:789-798. [PMID: 38780966 DOI: 10.1097/jcma.0000000000001113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Diabetic retinopathy (DR) is one of the most well-known microvascular complications of diabetes mellitus. As a traditional Chinese medicine, Huangqi (HQ), has been used for treating DR for a long time. However, its anti-DR active ingredients and mechanism are still unknown. Therefore, we designed this study to explore the active components and mechanism of HQ against DR via network pharmacology analysis. METHODS The ingredients of HQ, and potential targets of HQ and DR were obtained from public databases. We used the protein-protein interaction (PPI) network, Kyoto Encyclopedia of Genes and Genomes (KEGGs) pathway enrichment, and Gene Ontology (GO) analysis to identify core targets and pathways of HQ against DR. Finally, molecular docking and vitro experiments were applied to validate our results. RESULTS A total of 34 potential targets of HQ against DR were obtained. Based on PPI network, VEGFA, PTGS2, Interleukin-6 (IL-6), and CCL2 were considered as core targets. GO analysis involved 692 biological processes, 21 cellular components, and 35 molecular functions. KEGG enrichment analysis manifested that the anti-DR effect of HQ was mainly mediated via the AGE-RAGE signaling pathway in diabetic complications. The molecular docking results indicated that kaempferol had higher affinity with CCL2, IL-6, VEGFA, and PTGS2. The vitro experiments showed that the mRNA expressions of CCL2, IL-6, VEGFA, and PTGS2 in ARPE-19 cells were differentially decreased after kaempferol treatment. CONCLUSION This study preliminarily unveiled that the therapeutic efficacy of HQ against DR might be attributed to the reduced expression of CCL2, IL-6, VEGFA, and PTGS2.
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Affiliation(s)
- Xiaohui Lin
- Department of Ophthalmology, Inner Mongolia Autonomous Region People's Hospital, Hohhot, China
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Zeng Y, Mo G, Wang Z, Wang X, Li K, Yang Y, Tian N. Rheumatoid arthritis and diabetic retinopathy: A two-sample Mendelian randomization study. Medicine (Baltimore) 2024; 103:e39001. [PMID: 39058858 PMCID: PMC11272287 DOI: 10.1097/md.0000000000039001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 06/28/2024] [Indexed: 07/28/2024] Open
Abstract
Diabetic retinopathy (DR) is a common and highly blinding disease. Many clinical studies have shown a causal relationship between Rheumatoid arthritis (RA) and DR, but the results are contradictory. In addition, some clinical results and pathological inferences have certain paradoxes, and the influence of RA on the pathogenesis and development of DR Is unclear. Our research assessed the causal association between RA and the development of DR using a 2-sample Mendelian randomization method. Single nucleotide polymorphisms (SNPs) relevant to the study were extracted and filtered from genome-wide association study (GWAS) data. A DR GWAS with a sample size of 190,594 and an RA GWAS with a sample size of 58,284 were obtained. Inverse variance weighted (IVW) method was used to analyze the results, and Mendelian randomization (MR)-Egger regression method and weighted median method were used to evaluate the robustness. Sensitivity analysis was performed using pleiotropy test, heterogeneity test, leave-one-out test to ensure that the results were unbiased. Confounding factors were eliminated to ensure robustness. A total of 83 related SNPs were screened. IVW method showed a positive correlation between RA and the increased relative risk of diabetic retinopathy (OR = 1.06, 95%CI: 1.04-1.23). The same trend was shown by MR-Egger regression method and weighted median method. Sensitivity analysis showed that there was no heterogeneity in SNPs, and the results were less likely to be affected by potential bias. After removing SNPs linked to confounders, the MR results remained significant and stable in direction. There is a positive causal association between rheumatoid arthritis and diabetic retinopathy. It is important to strengthen retina-related screening and prevention in diabetic patients with RA to reduce the risk of DR In RA patients.
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Affiliation(s)
- Yihuan Zeng
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Province, China
| | - Guangmeng Mo
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Province, China
| | - Zhenting Wang
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Province, China
| | - Xiaoyv Wang
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Province, China
| | - Kunmeng Li
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Province, China
- Department of Ophthalmology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province, China
| | - Yan Yang
- Department of Ophthalmology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province, China
| | - Ni Tian
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangdong Province, China
- Department of Ophthalmology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province, China
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Liang H, Ren Y, Huang Y, Xie X, Zhang M. Treatment of diabetic retinopathy with herbs for tonifying kidney and activating blood circulation: A review of pharmacological studies. JOURNAL OF ETHNOPHARMACOLOGY 2024; 328:118078. [PMID: 38513781 DOI: 10.1016/j.jep.2024.118078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 03/17/2024] [Accepted: 03/19/2024] [Indexed: 03/23/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Diabetic retinopathy (DR) is a prevalent microvascular complication of diabetes. Chinese medicine believes that kidney deficiency and blood stasis are significant pathogenesis of DR. A characteristic therapeutic approach for this pathogenesis is the kidney-tonifying and blood-activating method. By literature retrieval from several databases, we methodically summarized the commonly used kidney-tonifying and blood-activating herbs for treating DR, including Lycii Fructus, Rehmanniane Radix Praeparata, and Corni Fructus with the function of nourishing kidney; Salvia Miltiorrhizae Radix et Rhizoma with the function of enhancing blood circulation; Rehmanniae Radix with the function of nourishing kidney yin; and Astragali Radix with the function of tonifying qi. It has been demonstrated that these Chinese herbs described above, by tonifying the kidney and activating blood circulation, significantly improve the course of DR. AIM OF THE STUDY Through literature research, to gain a thorough comprehension of the pathogenesis of DR. Simultaneously, through the traditional application analysis, modern pharmacology research and network pharmacology analysis of kidney-tonifying and blood-activating herbs, to review the effectiveness and advantages of kidney-tonifying and blood-activating herbs in treating DR comprehensively. MATERIALS AND METHODS PubMed, the China National Knowledge Infrastructure (CNKI), and Wanfang Data were used to filter the most popular herbs for tonifying kidney and activating blood in the treatment of DR. The search terms were "diabetic retinopathy" and "tonifying kidney and activating blood". Mostly from 2000 to 2023. Network pharmacology was applied to examine the key active components and forecast the mechanisms of kidney-tonifying and blood-activating herbs in the treatment of DR. RESULTS Kidney deficiency and blood stasis are the pathogenesis of DR, and the pathogenesis is linked to oxidative stress, inflammation, hypoxia, and hyperglycemia. Scientific data and network pharmacology analysis have demonstrated the benefit of tonifying kidney and activating blood herbs in treating DR through several channels, multiple components, and multiple targets. CONCLUSIONS This review first presents useful information for subsequent research into the material foundation and pharmacodynamics of herbs for tonifying kidney and activating blood, and offers fresh insights into the treatment of DR.
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Affiliation(s)
- Huan Liang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yuan Ren
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yuxia Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xuejun Xie
- Hospital of Chengdu University of Traditional Chinese Medicine, China.
| | - Mei Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
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Wang P, Gao L, Ma T, Ye Z, Li Z. MicroRNA-1225-5p Promotes the Development of Fibrotic Cataracts via Keap1/Nrf2 Signaling. Curr Eye Res 2024; 49:591-604. [PMID: 38450708 DOI: 10.1080/02713683.2024.2316712] [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: 06/27/2023] [Accepted: 02/03/2024] [Indexed: 03/08/2024]
Abstract
PURPOSE Fibrotic cataracts, including anterior subcapsular cataract (ASC) as well as posterior capsule opacification (PCO), are a common vision-threatening cause worldwide. Still, little is known about the underlying mechanisms. Here, we demonstrate a miRNA-based pathway regulating the pathological fibrosis process of lens epithelium. METHODS Gain- and loss-of-function approaches, as well as multiple fibrosis models of the lens, were applied to validate the crucial role of two miR-1225 family members in the TGF-β2 induced PCO model of human LECs and injury-induced ASC model in mice. RESULTS Both miR-1225-3p and miR-1225-5p prominently stimulate the migration and EMT process of lens epithelial cells (LECs) in vitro as well as lens fibrosis in vivo. Moreover, we demonstrated that the underlying mechanism for these effects of miR-1225-5p is via directly targeting Keap1 to regulate Keap1/Nrf2 signaling. In addition, evidence showed that Keap1/Nrf2 signaling is activated in the TGF-β2 induced PCO model of human LECs and injury-induced ASC model in mice, and inhibition of the Nrf2 pathway can significantly reverse the process of LECs EMT as well as lens fibrosis. CONCLUSIONS These results suggest that blockade of miR-1225-5p prevents lens fibrosis via targeting Keap1 thereby inhibiting Nrf2 activation. The 'miR-1225-Keap1-Nrf2' signaling axis presumably holds therapeutic promise in the treatment of fibrotic cataracts.
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Affiliation(s)
- Peihong Wang
- Medical School of Chinese PLA, Beijing, China
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Lixiong Gao
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Tianju Ma
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Zi Ye
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Zhaohui Li
- Medical School of Chinese PLA, Beijing, China
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
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Yang X, Wu X. The impact of sestrin2 on reactive oxygen species in diabetic retinopathy. Cell Biochem Funct 2024; 42:e4024. [PMID: 38666564 DOI: 10.1002/cbf.4024] [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: 01/30/2024] [Revised: 03/29/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
Diabetic retinopathy (DR) is a significant complication of diabetes that often leads to blindness, impacting Müller cells, the primary retinal macroglia involved in DR pathogenesis. Reactive oxygen species (ROS) play a crucial role in the development of DR. The objective of this study was to investigate the involvement of sestrin2 in DR using a high-glucose (HG)-induced Müller cell model and assessing cell proliferation with 5-ethynyl-2-deoxyuridine (EdU) labeling. Following this, sestrin2 was upregulated in Müller cells to investigate its effects on ROS, tube formation, and inflammation both in vitro and in vivo, as well as its interaction with the nuclear factor erythroid2-related factor 2 (Nrf2) signaling pathway. The findings demonstrated a gradual increase in the number of EdU-positive cells over time, with a subsequent decrease after 72 h of exposure to high glucose levels. Additionally, the expression of sestrin2 exhibited a progressive increase over time, followed by a decrease at 72 h. The rh-sestrin2 treatment suppressed the injury of Müller cells, decreased ROS level, and inhibited the tube formation. Rh-sestrin2 treatment enhanced the expression of sestrin2, Nrf2, heme oxygenase-1 (HO-1), and glutamine synthetase (GS); however, the ML385 treatment reversed the protective effect of rh-sestrin2. Finally, we evaluated the effect of sestrin2 in a DR rat model. Sestrin2 overexpression treatment improved the pathological injury of retina and attenuated the oxidative damage and inflammatory reaction. Our results highlighted the inhibitory effect of sestrin2 in the damage of retina, thus presenting a novel therapeutic sight for DR.
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Affiliation(s)
- Xueli Yang
- Department of Ophthalmology, YanTaiShan Hospital, Yantai, China
| | - Xiaoli Wu
- Department of Ophthalmology, Shandong Rongjun General Hospital, Jinan, China
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Zhao Y, Chen Y, Yan N. The Role of Natural Products in Diabetic Retinopathy. Biomedicines 2024; 12:1138. [PMID: 38927345 PMCID: PMC11200400 DOI: 10.3390/biomedicines12061138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/07/2024] [Accepted: 05/18/2024] [Indexed: 06/28/2024] Open
Abstract
Diabetic retinopathy (DR) is one of the most severe complications of diabetes mellitus and potentially leads to significant visual impairment and blindness. The complex mechanisms involved in the pathological changes in DR make it challenging to achieve satisfactory outcomes with existing treatments. Diets conducive to glycemic control have been shown to improve outcomes in diabetic patients, thus positioning dietary interventions as promising avenues for DR treatment. Investigations have demonstrated that natural products (NPs) may effectively manage DR. Many types of natural compounds, including saponins, phenols, terpenoids, flavonoids, saccharides, alkaloids, and vitamins, have been shown to exert anti-inflammatory, antioxidant, anti-neovascular, and antiapoptotic effects in vivo and in vitro. Nevertheless, the clinical application of NPs still faces challenges, such as suboptimal specificity, poor bioavailability, and a risk of toxicity. Prospective clinical studies are imperative to validate the therapeutic potential of NPs in delaying or preventing DR.
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Affiliation(s)
- Yuxuan Zhao
- Research Laboratory of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.Z.); (Y.C.)
- Department of Optometry and Visual Science, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yi Chen
- Research Laboratory of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.Z.); (Y.C.)
| | - Naihong Yan
- Research Laboratory of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.Z.); (Y.C.)
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Fu W, Ye Y, Hu F. LncRNA XIST promotes neovascularization in diabetic retinopathy by regulating miR-101-3p/VEGFA. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2024; 68:e230097. [PMID: 38739522 PMCID: PMC11156180 DOI: 10.20945/2359-4292-2023-0097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/04/2023] [Indexed: 05/16/2024]
Abstract
Objective This study sought to investigate the regulation of long noncoding RNA (lncRNA) XIST on the microRNA (miR)-101-3p/vascular endothelial growth factor A (VEGFA) axis in neovascularization in diabetic retinopathy (DR). Materials and methods Serum of patients with DR was extracted for the analysis of XIST, miR-101-3p, and VEGFA expression levels. High glucose (HG)-insulted HRMECs and DR model rats were treated with lentiviral vectors. MTT, transwell, and tube formation assays were performed to evaluate cell viability, migration, and angiogenesis, and ELISA was conducted to detect the levels of inflammatory cytokines. Dual-luciferase reporter, RIP, and RNA pull-down experiments were used to validate the relationships among XIST, miR-101-3p, and VEGFA. Results XIST and VEGFA were upregulated and miR-101-3p was downregulated in serum from patients with DR. XIST knockdown inhibited proliferation, migration, vessel tube formation, and inflammatory responsein HG-treated HRMECs, whereas the above effects were nullified by miR-101-3p inhibition or VEGFA overexpression. miR-101-3p could bind to XIST and VEGFA. XIST promoted DR development in rats by regulating the miR-101-3p/VEGFA axis. Conclusion LncRNA XIST promotes VEGFA expression by downregulating miR-101-3p, thereby stimulating angiogenesis and inflammatory response in DR.
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Affiliation(s)
- Weina Fu
- Department of Ophthalmology, Ningbo Medical Center Lihuili Hospital, Ningbo University, Ningbo, P.R. China,
| | - Yunyan Ye
- Department of Ophthalmology, Ningbo Medical Center Lihuili Hospital, Ningbo University, Ningbo, P.R. China
| | - Feng Hu
- Department of Ophthalmology, Ningbo Medical Center Lihuili Hospital, Ningbo University, Ningbo, P.R. China
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12
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Zhang L, Zhang ZF, Hui YN, He F, Guan XR, Zhou J. Oxidative Stress Participates in Age-Related Cataract Formation by Disrupting Connection between Lens Epithelial Cells through c-Src/VEGF Pathway. Curr Eye Res 2024; 49:380-390. [PMID: 38108278 DOI: 10.1080/02713683.2023.2293456] [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: 07/16/2023] [Accepted: 12/05/2023] [Indexed: 12/19/2023]
Abstract
PURPOSE To observe the effects of oxidative stress on vascular endothelial growth factor (VEGF) and connections of lens epithelial cells. METHODS Human lens epithelium of patients with age-related cataract (ARC), both SRA01/04 cells and whole mice lens stimulated by H2O2 were employed. VEGF in human aqueous humor of ARC-patients and the supernatant of SRA01/04 cells was determined by ELISA. The expressions of VEFG in human lens epithelium were detected by immunofluorescence staining. Multiple linear regression analysis and spearman rank-order correlation were used to determine the associations between VEGF and parameters of ARC individuals. In H2O2-induced SRA01/04 cells, Catalase (CAT), PP1 (inhibitor of c-Src kinase) and Avastin (VEGF antibody) were used to inhibit the effects of H2O2, activation of c-Src kinase and VEGF, which were detected by Western blot. The alterations of ZO-1 and N-cadherin were tested by immunofluorescence staining and Western blot. In H2O2-induced whole lens, the changes of opacification area in different treatment of inhibitors were observed. RESULTS The secretion of VEGF in aqueous humor and expression of VEGF in the lens epithelium of ARC patients increased significantly with age. In H2O2-induced SRA01/04 cells, the VEGF in the supernatant was increased with the culture duration and the dose of H2O2. The expressions of p-Src418 and VEGF were also up-regulated, whereas the expressions of ZO-1 and N-cadherin were down-regulated. CAT effectively prevented these changes induced by H2O2, while PP1 inhibited not only p-Src418 but also up-regulation of VEGF, Avastin partially inhibited VEGF up-regulation. Both PP1 and Avastin prevented down-regulation of ZO-1 and N-cadherin, respectively, but Avastin combined with PP1 had no significant synergistic effects. In H2O2-induced cataract, CAT prevented development of opacification area effectively, and PP1 and Avastin did partially. CONCLUSIONS Oxidative stress disrupts connections of lens epithelial cells by activating c-Src/VEGF, inhibiting which may prevent cataract.
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Affiliation(s)
- Le Zhang
- Department of Ophthalmology, Eye Institute of PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- Department of Ophthalmology, Northwest Woman's and Children's Hospital, Xi'an, Shaanxi, China
| | - Zi-Feng Zhang
- Department of Ophthalmology, Eye Institute of PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yan-Nian Hui
- Department of Ophthalmology, Eye Institute of PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Fang He
- Department of Ophthalmology, Eye Institute of PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiao-Rong Guan
- Department of Ophthalmology, Eye Institute of PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jian Zhou
- Department of Ophthalmology, Eye Institute of PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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13
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Fang R, Li HL, Lv NX, Yue PL, Jia YX, Liu ZC, Zhou HG, Song XD. Inhibition of miR-29a-3p Alleviates Apoptosis of Lens Epithelial Cells via Upregulation of CAND1. Curr Eye Res 2024; 49:391-400. [PMID: 38095165 DOI: 10.1080/02713683.2023.2293457] [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: 08/25/2023] [Accepted: 12/05/2023] [Indexed: 03/23/2024]
Abstract
PURPOSE Accumulated evidence has shown that microRNAs (miRNAs) are closely related to the pathogenesis and progression of senile cataracts. Here we investigate the effect of miR-29a-3p in cataractogenesis and determined the potential molecular mechanism involved. METHODS In this study, we constructed a selenite cataract model in rats and obtained the miRNAs related to cataracts by whole transcriptome sequencing. To investigate the effect and mechanism of miR-29a-3p on cataracts, we performed several in vivo and in vitro experiments, including CCK8 assay, flow cytometry, luciferase reporter assay, Edu assay, and western blot analysis. RESULT Sequencing data showed downregulation of miR-29a-3p in rats with selenite cataracts. Down-regulation of miR-29a-3p could promote lens epithelial cells (SRA01/04) proliferation and inhibit cell apoptosis, and miR-29a-3p silence could inhibit the development of cataracts. Additionally, CAND1 was a direct target gene for miR-29a-3p. CONCLUSION These data demonstrate that miR-29a-3p inhibits apoptosis of lens epithelial cells by regulating CAND1, which may be a potential target for senile cataracts.
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Affiliation(s)
- Rui Fang
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Hai-Long Li
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, China
| | - Ning-Xin Lv
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Pei-Lin Yue
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yu-Xuan Jia
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhao-Chuan Liu
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Tongren Eye Center, Beijing, China
- Beijing Ophthalmology&Visual Sciences Key Lab, Beijing, China
| | - Hong-Gang Zhou
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, China
| | - Xu-Dong Song
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Tongren Eye Center, Beijing, China
- Beijing Ophthalmology&Visual Sciences Key Lab, Beijing, China
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14
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Jin Q, Liu T, Ma F, Fu T, Yang L, Mao H, Wang Y, Peng L, Li P, Zhan Y. Roles of Sirt1 and its modulators in diabetic microangiopathy: A review. Int J Biol Macromol 2024; 264:130761. [PMID: 38467213 DOI: 10.1016/j.ijbiomac.2024.130761] [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: 12/27/2023] [Revised: 02/03/2024] [Accepted: 03/07/2024] [Indexed: 03/13/2024]
Abstract
Diabetic vascular complications include diabetic macroangiopathy and diabetic microangiopathy. Diabetic microangiopathy is characterised by impaired microvascular endothelial function, basement membrane thickening, and microthrombosis, which may promote renal, ocular, cardiac, and peripheral system damage in diabetic patients. Therefore, new preventive and therapeutic strategies are urgently required. Sirt1, a member of the nicotinamide adenine dinucleotide-dependent histone deacetylase class III family, regulates different organ growth and development, oxidative stress, mitochondrial function, metabolism, inflammation, and aging. Sirt1 is downregulated in vascular injury and microangiopathy. Moreover, its expression and distribution in different organs correlate with age and play critical regulatory roles in oxidative stress and inflammation. This review introduces the background of diabetic microangiopathy and the main functions of Sirt1. Then, the relationship between Sirt1 and different diabetic microangiopathies and the regulatory roles mediated by different cells are described. Finally, we summarize the modulators that target Sirt1 to ameliorate diabetic microangiopathy as an essential preventive and therapeutic measure for diabetic microangiopathy. In conclusion, targeting Sirt1 may be a new therapeutic strategy for diabetic microangiopathy.
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Affiliation(s)
- Qi Jin
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tongtong Liu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fang Ma
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tongfei Fu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liping Yang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Huimin Mao
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuyang Wang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liang Peng
- China-Japan Friendship Hospital, Institute of Clinical Medical Sciences, Beijing, China.
| | - Ping Li
- China-Japan Friendship Hospital, Institute of Clinical Medical Sciences, Beijing, China.
| | - Yongli Zhan
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
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15
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Zhang J, Yang X, Zong Y, Yu T, Yang X. miR-196b-5p regulates inflammatory process and migration via targeting Nras in trabecular meshwork cells. Int Immunopharmacol 2024; 129:111646. [PMID: 38325046 DOI: 10.1016/j.intimp.2024.111646] [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: 11/23/2023] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 02/09/2024]
Abstract
Glaucoma, an insidious ophthalmic pathology, is typified by an aberrant surge in intraocular pressure (IOP) which culminates in the degeneration of retinal ganglion cells and optical neuropathy. The mitigation of IOP stands as the principal therapeutic strategy to forestall vision loss. The trabecular meshwork's (TM) integrity and functionality are pivotal in modulating aqueous humor egress. Despite their potential significance in glaucomatous pathophysiology, the implications of microRNAs (miRNAs) on TM functionality remain largely enigmatic. Transcriptomic sequencing was employed to delineate the miRNA expression paradigm within the limbal region of rodent glaucoma models, aiming to elucidate miRNA-mediated mechanisms within the glaucomatous milieu. Analytical scrutiny of the sequencing data disclosed 174 miRNAs with altered expression profiles, partitioned into 86 miRNAs with augmented expression and 88 with diminished expression. Notably, miRNAs such as hsa-miR-196b-5p were identified as having substantial expression discrepancies with concomitant statistical robustness, suggesting a potential contributory role in glaucomatous progression. Subsequent in vitro assays affirmed that miR-196b-5p augments the inflammatory cascade within immortalized human TM (iHTM) and glaucoma-induced human TM (GTM3) cells, concurrently attenuating cellular proliferation, motility, and cytoskeletal architecture. Additionally, miR-196b-5p implicates itself in the regulation of IOP and inflammatory processes in rodent models. At a mechanistic level, miR-196b-5p modulates its effects via the targeted repression of Nras (neuroblastoma RAS viral oncogene homolog). Collectively, these transcriptomic investigations furnish a comprehensive vista into the regulatory roles of miRNAs within the glaucomatous framework, and the identification of differentially expressed miRNAs alongside their targets could potentially illuminate novel molecular pathways implicated in glaucoma, thereby aiding in the development of innovative therapeutic avenues.
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Affiliation(s)
- Jingjing Zhang
- Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Xuejiao Yang
- Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Yao Zong
- Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Tao Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China.
| | - Xian Yang
- Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China.
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16
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Luo Y, Li C. Advances in Research Related to MicroRNA for Diabetic Retinopathy. J Diabetes Res 2024; 2024:8520489. [PMID: 38375094 PMCID: PMC10876316 DOI: 10.1155/2024/8520489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 08/21/2023] [Accepted: 01/27/2024] [Indexed: 02/21/2024] Open
Abstract
Diabetic retinopathy (DR) is a severe microvascular complication of diabetes and is one of the primary causes of blindness in the working-age population in Europe and the United States. At present, no cure is available for DR, but early detection and timely intervention can prevent the rapid progression of the disease. Several treatments for DR are known, primarily ophthalmic treatment based on glycemia, blood pressure, and lipid control, which includes laser photocoagulation, glucocorticoids, vitrectomy, and antivascular endothelial growth factor (anti-VEGF) medications. Despite the clinical efficacy of the aforementioned therapies, none of them can entirely shorten the clinical course of DR or reverse retinopathy. MicroRNAs (miRNAs) are vital regulators of gene expression and participate in cell growth, differentiation, development, and apoptosis. MicroRNAs have been shown to play a significant role in DR, particularly in the molecular mechanisms of inflammation, oxidative stress, and neurodegeneration. The aim of this review is to systematically summarize the signaling pathways and molecular mechanisms of miRNAs involved in the occurrence and development of DR, mainly from the pathogenesis of oxidative stress, inflammation, and neovascularization. Meanwhile, this article also discusses the research progress and application of miRNA-specific therapies for DR.
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Affiliation(s)
- Yahan Luo
- Shanghai TCM-Integrated Hospital, Shanghai University of TCM, Shanghai, China
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chunxia Li
- Shanghai TCM-Integrated Hospital, Shanghai University of TCM, Shanghai, China
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17
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Banerjee S, Xu W, Doctor A, Driss A, Nezhat C, Sidell N, Taylor RN, Thompson WE, Chowdhury I. TNFα-Induced Altered miRNA Expression Links to NF-κB Signaling Pathway in Endometriosis. Inflammation 2023; 46:2055-2070. [PMID: 37389684 PMCID: PMC10673760 DOI: 10.1007/s10753-023-01862-x] [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: 04/28/2023] [Revised: 06/04/2023] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
Endometriosis is a common gynecological inflammatory disorder characterized by immune system dysregulation, which is involved in lesion initiation and progression. Studies have demonstrated that several cytokines are associated with the evolution of endometriosis, including tumor necrosis factor-α (TNFα). TNFα is a non-glycosylated cytokine protein with potent inflammatory, cytotoxic, and angiogenic potential. In the current study, we examined the ability of TNFα to induce dysregulation of microRNAs (miRNAs) linked to NFkB signaling pathways, thus contributing to the pathogenesis of endometriosis. Using RT-qPCR, the expression of several miRNAs was quantified in primary cells derived from eutopic endometrium of endometriosis subjects (EESC) and normal endometrial stromal cells (NESC), and also TNFα-treated NESCs. The phosphorylation of the pro-inflammatory molecule NF-κB and the candidates of the survival pathways PI3K, AKT, and ERK was measured by western blot analysis. The elevated secretion of TNFα in EESCs downregulates the expression level of several miRNAs significantly in EESCs compared to NESCs. Also, treatment of NESCs with exogenous TNFα significantly reduced the expression of miRNAs in a dose-dependent manner to levels similar to EESCs. In addition, TNFα significantly increased the phosphorylation of the PI3K, AKT, ERK, and NF-κB signaling pathways. Notably, treatment with curcumin (CUR, diferuloylmethane), an anti-inflammatory polyphenol, significantly increased the expression of dysregulated miRNAs in EESC in a dose-dependent manner. Our findings demonstrate that TNFα is upregulated in EESCs, which subsequently dysregulates the expression of miRNAs, contributing to the pathophysiology of endometriotic cells. CUR effectively inhibits the expression of TNFα, subsequently altering miRNA levels and suppressing the phosphorylation of AKT, ERK, and NF-κB.
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Affiliation(s)
- Saswati Banerjee
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA, 30310, USA
| | - Wei Xu
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA, 30310, USA
| | - Aaron Doctor
- Department of Obstetrics and Gynecology, Morehouse School of Medicine, 720 Westview Drive Southwest, Atlanta, GA, 30310, USA
| | - Adel Driss
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA, 30310, USA
| | - Ceana Nezhat
- Nezhat Medical Center, 5555 Peachtree Dunwoody Road, Atlanta, GA, 30342, USA
| | - Neil Sidell
- Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Robert N Taylor
- Department of Obstetrics and Gynecology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA
| | - Winston E Thompson
- Department of Physiology, Morehouse School of Medicine, Atlanta, GA, 30310, USA
- Department of Obstetrics and Gynecology, Morehouse School of Medicine, 720 Westview Drive Southwest, Atlanta, GA, 30310, USA
| | - Indrajit Chowdhury
- Department of Obstetrics and Gynecology, Morehouse School of Medicine, 720 Westview Drive Southwest, Atlanta, GA, 30310, USA.
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18
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Li P, Wang L, Liu Q, Du ZJ. Bioinformatics and in vitro study reveal the roles of microRNA-346 in high glucose-induced human retinal pigment epithelial cell damage. Int J Ophthalmol 2023; 16:1756-1765. [PMID: 38028527 PMCID: PMC10626347 DOI: 10.18240/ijo.2023.11.04] [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: 04/05/2023] [Accepted: 07/05/2023] [Indexed: 12/01/2023] Open
Abstract
AIM To study microRNAs (miRNAs) and their potential effects in high glucose-induced human retinal pigment epithelial cell damage. METHODS We screened the GSE52233 miRNA expression dataset for differentially expressed miRNAs (DEMs). The target genes of the top 10 DEMs were predicted using miRWalk 2.0 database, followed by function enrichment and protein-protein interaction analysis. miRNA expression was determined in the human retinal pigment epithelial cell line ARPE-19 treated with high glucose (HG) by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Cell proliferation was determined using cell counting kit (CCK)-8 assay. Cell cycle, apoptosis, and reactive oxygen species (ROS) levels were determined by flow cytometry. The direct interaction between miRNA and targets was validated using dual-luciferase reporter assay. RESULTS Thirty-nine DEMs were screened, and we predicted 125 miRNA-mRNA pairs for the top 10 DEMs, including 119 target genes of seven DEMs such as miR-346, which was upregulated in diabetic retinopathy (DR). miR-346 target genes were substantially enriched in the regulation of intracellular transport and retinoic acid-inducible gene I (RIG-I)-like receptor signaling pathway. Expression of three upregulated and downregulated miRNAs were verified by qRT-PCR in HG-treated ARPE-19 cells. Expression of miR-346 was elevated in HG treated ARPE-19 cells in a dose-dependent manner. HG inhibited cell proliferation and induced apoptosis, which were partly reversed by transfecting an miR-346 inhibitor, which even decreased the ROS levels elevated due to HG. Argonaute 2 (AGO2) was a target of miR-346. CONCLUSION miR-346 is a key miRNA and plays an important role in HG-induced damage in human retinal pigment epithelial cells.
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Affiliation(s)
- Peng Li
- Department of Ophthalmology, Xijing 986 Hospital Department, Fourth Military Medical University, Xi'an 710054, Shaanxi Province, China
| | - Li Wang
- Ophthalmology Teaching and Research Section of Institute of Medical Technology, Xi'an Medical College, Xi'an 710032, Shaanxi Province, China
| | - Qing Liu
- Department of Ophthalmology, Xijing 986 Hospital Department, Fourth Military Medical University, Xi'an 710054, Shaanxi Province, China
| | - Zhao-Jiang Du
- Department of Ophthalmology, Xi'an Central Hospital, Xi'an 710001, Shaanxi Province, China
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19
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García-Bermúdez MY, Vohra R, Freude K, van Wijngaarden P, Martin K, Thomsen MS, Aldana BI, Kolko M. Potential Retinal Biomarkers in Alzheimer's Disease. Int J Mol Sci 2023; 24:15834. [PMID: 37958816 PMCID: PMC10649108 DOI: 10.3390/ijms242115834] [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: 09/01/2023] [Revised: 10/18/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Alzheimer's disease (AD) represents a major diagnostic challenge, as early detection is crucial for effective intervention. This review examines the diagnostic challenges facing current AD evaluations and explores the emerging field of retinal alterations as early indicators. Recognizing the potential of the retina as a noninvasive window to the brain, we emphasize the importance of identifying retinal biomarkers in the early stages of AD. However, the examination of AD is not without its challenges, as the similarities shared with other retinal diseases introduce complexity in the search for AD-specific markers. In this review, we address the relevance of using the retina for the early diagnosis of AD and the complex challenges associated with the search for AD-specific retinal biomarkers. We provide a comprehensive overview of the current landscape and highlight avenues for progress in AD diagnosis by retinal examination.
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Affiliation(s)
| | - Rupali Vohra
- Eye Translational Research Unit, Department of Drug Design and Pharmacology, University of Copenhagen, 2100 Copenhagen, Denmark
- Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, 2600 Glostrup, Denmark
| | - Kristine Freude
- Group of Stem Cell Models and Embryology, Department of Veterinary and Animal Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark
| | - Peter van Wijngaarden
- Center for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC 3002, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, VIC 3010, Australia
| | - Keith Martin
- Center for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC 3002, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, VIC 3010, Australia
- Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Maj Schneider Thomsen
- Neurobiology Research and Drug Delivery, Department of Health, Science and Technology, Aalborg University, 9220 Aalborg, Denmark
| | - Blanca Irene Aldana
- Neurometabolism Research Group, Department of Drug Design and Pharmacology, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Miriam Kolko
- Eye Translational Research Unit, Department of Drug Design and Pharmacology, University of Copenhagen, 2100 Copenhagen, Denmark
- Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, 2600 Glostrup, Denmark
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20
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Shi X, Xue Z, Ye K, Yuan J, Zhang Y, Qu J, Su J. Roles of non-coding RNAs in eye development and diseases. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1785. [PMID: 36849659 DOI: 10.1002/wrna.1785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/17/2022] [Accepted: 02/06/2023] [Indexed: 03/01/2023]
Abstract
The prevalence of ocular disorders is dramatically increasing worldwide, especially those that cause visual impairment and permanent loss of vision, including cataract, glaucoma, age-related macular degeneration, and diabetic retinopathy. Extensive evidence has shown that ncRNAs are key regulators in various biogenesis and biological functions, controlling gene expression related to histogenesis and cell differentiation in ocular tissues. Aberrant expression and function of ncRNA can lead to dysfunction of visual system and mediate progression of eye disorders. Here, we mainly offer an overview of the role of precise modulation of ncRNAs in eye development and function in patients with eye diseases. We also highlight the challenges and future perspectives in conducting ncRNA studies, focusing specifically on the role of ncRNAs that may hold expanded promise for their diagnostic and therapeutic applications in various eye diseases. This article is categorized under: Regulatory RNAs/RNAi/Riboswitches > Regulatory RNAs RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development.
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Affiliation(s)
- Xinrui Shi
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhengbo Xue
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Kaicheng Ye
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jian Yuan
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Oujiang Laboratory, Zhejiang Lab for Regenerative Medicine, Vision and Brain Health, Zhejiang, China
| | - Yan Zhang
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jia Qu
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Oujiang Laboratory, Zhejiang Lab for Regenerative Medicine, Vision and Brain Health, Zhejiang, China
| | - Jianzhong Su
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Oujiang Laboratory, Zhejiang Lab for Regenerative Medicine, Vision and Brain Health, Zhejiang, China
- Institute of PSI Genomics, Zhejiang, China
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21
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Yin H, Zhong S. Efficacy of ranibizumab combined with photocoagulation for diabetic retinopathy: A meta-analysis study. Medicine (Baltimore) 2023; 102:e34170. [PMID: 37543834 PMCID: PMC10403042 DOI: 10.1097/md.0000000000034170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/07/2023] Open
Abstract
BACKGROUND Ranibizumab addition may benefit to improve the efficacy in patients with diabetic retinopathy than only photocoagulation, and this meta-analysis aims to explore the impact of ranibizumab addition on efficacy for diabetic retinopathy. METHODS PubMed, EMbase, Web of science, EBSCO, and Cochrane library databases were systematically searched, and we included randomized controlled trials assessing the effect of ranibizumab addition on patients with diabetic retinopathy for this meta-analysis. RESULTS Six randomized controlled trials were finally included in the meta-analysis. Overall, compared with control intervention for diabetic retinopathy, ranibizumab addition showed significantly increased number of neovascularization area reduction (OR = 4.20; 95% CI = 1.47-12.02; P = .007) and reduced fluorescein leakage (MD = -2.53; 95% CI = -3.31 to -1.75; P < .00001), but showed no obvious impact on neovascularization area (MD = -1.80; 95% CI = -3.68 to 0.08; P = .06), photocoagulation retreatment (OR = 1.03; 95% CI = 0.47-2.27; P = .94) or adverse events (OR = 1.45; 95% CI = 0.49-4.29; P = .50). CONCLUSIONS Ranibizumab combined with photocoagulation is effective to improve efficacy for diabetic retinopathy.
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Affiliation(s)
- Hongli Yin
- Department of Ophthalmology, The People's Hospital of Chongqing Liangjiang New Area, Chongqing, China
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22
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Liu DD, Zhang CY, Zhang JT, Gu LM, Xu GT, Zhang JF. Epigenetic modifications and metabolic memory in diabetic retinopathy: beyond the surface. Neural Regen Res 2023; 18:1441-1449. [PMID: 36571340 PMCID: PMC10075108 DOI: 10.4103/1673-5374.361536] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Epigenetics focuses on DNA methylation, histone modification, chromatin remodeling, noncoding RNAs, and other gene regulation mechanisms beyond the DNA sequence. In the past decade, epigenetic modifications have drawn more attention as they participate in the development and progression of diabetic retinopathy despite tight control of glucose levels. The underlying mechanisms of epigenetic modifications in diabetic retinopathy still urgently need to be elucidated. The diabetic condition facilitates epigenetic changes and influences target gene expression. In this review, we summarize the involvement of epigenetic modifications and metabolic memory in the development and progression of diabetic retinopathy and propose novel insights into the treatment of diabetic retinopathy.
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Affiliation(s)
- Dan-Dan Liu
- Department of Ophthalmology of Tongji Hospital, Tongji Eye Institute, Department of Regenerative Medicine, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Chao-Yang Zhang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University; National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Jing-Ting Zhang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University; National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Li-Min Gu
- Department of Ophthalmology, Shanghai Aier Eye Hospital, Shanghai, China
| | - Guo-Tong Xu
- Department of Ophthalmology of Tongji Hospital, Tongji Eye Institute, Department of Regenerative Medicine, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Jing-Fa Zhang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University; National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases; Shanghai Engineering Center for Visual Science and Photomedicine; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
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23
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Banerjee S, Xu W, Doctor A, Driss A, Nezhat C, Sidell N, Taylor RN, Thompson WE, Chowdhury I. TNFα-induced altered miRNA expression links to NF-κB signaling pathway in endometriosis. RESEARCH SQUARE 2023:rs.3.rs-2870585. [PMID: 37205467 PMCID: PMC10187425 DOI: 10.21203/rs.3.rs-2870585/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Endometriosis is a common gynecological inflammatory disorder characterized by immune system dysregulation, which is involved in lesion initiation and progression. Studies have demonstrated that several cytokines are associated with the evolution of endometriosis, including tumor necrosis factor-α (TNFα). TNFα is a non-glycosylated cytokine protein with potent inflammatory, cytotoxic, and angiogenic potential. In the current study, we examined the ability of TNFα to induce dysregulation of microRNAs (miRNAs) linked to NFkB-signaling pathways, thus contributing to the pathogenesis of endometriosis. Using RT-QPCR, the expression of several miRNAs were quantified in primary cells derived from eutopic endometrium of endometriosis subjects (EESC) and normal endometrial stromal cells (NESC) and also TNFα treated NESCs. The phosphorylation of the pro-inflammatory molecule NF-κB and the candidates of the survival pathways PI3K, AKT and ERK was measured by westernblot analysis. The elevated secretion of TNFα in EESCs downregulates the expression level of several miRNAs significantly (p < 0.05) in EESCs compared to NESC. Also treatment of NESCs with exogenous TNFα significantly reduced the expression of miRNAs in a dose-dependent manner to levels similar to EESCs. In addition, TNFα significantly increased the phosphorylation of the PI3K, AKT, ERK, and NF-κB signaling pathways. Notably, treatment with curcumin (CUR, diferuloylmethane), an anti-inflammatory polyphenol, significantly increased the expression of dysregulated miRNAs in EESC in a dose-dependent manner. Our findings demonstrate that TNFα is upregulated in EESCs, which subsequently dysregulates the expression of miRNAs, contributing to the pathophysiology of endometriotic cells. CUR effectively inhibits the expression of TNFα, subsequently altering miRNA levels and suppresses the phosphorylation of AKT, ERK, and NF-κB.
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Affiliation(s)
| | - Wei Xu
- Morehouse School of Medicine
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24
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Peng Y, Bui CH, Zhang XJ, Chen JS, Tham CC, Chu WK, Chen LJ, Pang CP, Yam JC. The role of EZH2 in ocular diseases: a narrative review. Epigenomics 2023; 15:557-570. [PMID: 37458071 DOI: 10.2217/epi-2023-0147] [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] [Indexed: 07/18/2023] Open
Abstract
EZH2, acting as a catalytic subunit of PRC2 to catalyze lysine 27 in histone H3, induces the suppression of gene expression. EZH2 can regulate cell proliferation and differentiation of retinal progenitors, which are required for physiological retinal development. Meanwhile, an abnormal level of EZH2 has been observed in ocular tumors and other pathological tissues. This review summarizes the current knowledge on EZH2 in retinal development and ocular diseases, including inherited retinal diseases, ocular tumors, corneal injury, cataract, glaucoma, diabetic retinopathy and age-related retinal degeneration. We highlight the potential of targeting EZH2 as a precision therapeutic target in ocular diseases.
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Affiliation(s)
- Yu Peng
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Christine Ht Bui
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Xiu J Zhang
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Jian S Chen
- Aier School of Ophthalmology, Central South University, Changsha, Hunan Province, 410000, China
- Aier Eye Institute, Changsha, Hunan Province, 410000, China
- Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, Guangdong Province, 510000, China
| | - Clement C Tham
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
- Hong Kong Eye Hospital, Kowloon, 999077, Hong Kong
- Department of Ophthalmology & Visual Sciences, Prince of Wales Hospital, 999077, Hong Kong
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Wai K Chu
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Li J Chen
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
- Department of Ophthalmology & Visual Sciences, Prince of Wales Hospital, 999077, Hong Kong
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Chi P Pang
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, 999077, Hong Kong
| | - Jason C Yam
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, 999077, Hong Kong
- Hong Kong Eye Hospital, Kowloon, 999077, Hong Kong
- Department of Ophthalmology, Hong Kong Children's Hospital, 999077, Hong Kong
- Department of Ophthalmology & Visual Sciences, Prince of Wales Hospital, 999077, Hong Kong
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, 999077, Hong Kong
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25
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Huang H, Luo Y, Wang Q, Zhang Y, Li Z, He R, Chen X, Dong Z. Vaccinium as Potential Therapy for Diabetes and Microvascular Complications. Nutrients 2023; 15:2031. [PMID: 37432140 DOI: 10.3390/nu15092031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/15/2023] [Accepted: 04/20/2023] [Indexed: 07/12/2023] Open
Abstract
Diabetes mellitus is one of the most critical global health concerns, with a fast-growing prevalence. The incidence of diabetic vascular complications is also rapidly increasing, exacerbating the burden on individuals with diabetes and the consumption of public medical resources. Despite the overall improvements in the prevention, diagnosis, and treatment of diabetic microvascular complications in recent years, safe and effective alternative or adjunctive therapies are urgently needed. The mechanisms underlying diabetic vascular complications are complex, with hyperglycemia-induced oxidative stress and inflammation being the leading causes. Therefore, glycemic control, antioxidation, and anti-inflammation are considered the main targets for the treatment of diabetes and its vascular comorbidities. Vaccinium L. (Ericaceae) is a genus of plants enriched with polyphenolic compounds in their leaves and fruits. Vaccinium and its extracts have demonstrated good bioactivity in reducing blood glucose, oxidative stress, and inflammation, making them excellent candidates for the management of diabetes and diabetic vascular complications. Here, we review recent preclinical and clinical studies on the potential effect of Vaccinium on ameliorating diabetes and diabetic complications, particularly diabetic kidney disease and diabetic retinopathy.
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Affiliation(s)
- Hui Huang
- National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, Beijing 100853, China
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yayong Luo
- National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, Beijing 100853, China
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Qian Wang
- National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, Beijing 100853, China
| | - Yihan Zhang
- BYHEALTH Institute of Nutrition & Health, No. 3 Kehui 3rd Street, No. 99 Kexue Avenue Central, Huangpu District, Guangzhou 510663, China
| | - Zhongxia Li
- BYHEALTH Institute of Nutrition & Health, No. 3 Kehui 3rd Street, No. 99 Kexue Avenue Central, Huangpu District, Guangzhou 510663, China
| | - Ruikun He
- BYHEALTH Institute of Nutrition & Health, No. 3 Kehui 3rd Street, No. 99 Kexue Avenue Central, Huangpu District, Guangzhou 510663, China
| | - Xiangmei Chen
- National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, Beijing 100853, China
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zheyi Dong
- National Clinical Research Center for Kidney Diseases, State Key Laboratory of Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, Beijing 100853, China
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26
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Wang W, Qu C, Yan H. Network meta-analysis of intravitreal conbercept as an adjuvant to vitrectomy for proliferative diabetic retinopathy. Front Endocrinol (Lausanne) 2023; 14:1098165. [PMID: 36896181 PMCID: PMC9989469 DOI: 10.3389/fendo.2023.1098165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/31/2023] [Indexed: 02/23/2023] Open
Abstract
Purpose Intravitreal Conbercept (IVC) has been shown to be effective in treating proliferative diabetic retinopathy (PDR) as an adjuvant in pars plana vitrectomy (PPV); however, the best timing of IVC injection remains unknown. This network meta-analysis (NMA) sought to ascertain the comparative efficacy of different timings of IVC injection as an adjuvant to PPV on PDR. Methods A comprehensive literature search was conducted in PubMed, EMBASE, and the Cochrane Library to identify relevant studies published before August 11, 2022. According to the mean time of IVC injection before PPV, the strategy was defined as very long interval if it was > 7 days but ≤ 9 days, long interval if it was > 5 days but ≤ 7 days, mid interval if it was > 3 days but ≤ 5 days, and short interval if it was ≤ 3 days, respectively. The strategy was defined as perioperative IVC if IVC was injected both before and at the end of PPV, and the strategy was intraoperative IVC if injected immediately at the end of PPV. The mean difference (MD) and odds ratio (OR) with corresponding 95% confidence interval (CI) for continuous and binary variables, respectively, were computed through network meta-analysis using Stata 14.0 MP. Results Eighteen studies involving 1149 patients were included. There was no statistical difference between intraoperative IVC and control in treating PDR. Except for a very long interval, preoperative IVC significantly shortened operation time, and reduced intraoperative bleeding and iatrogenic retinal breaks. Long and short intervals reduced endodiathermy application, and mid and short intervals reduced postoperative vitreous hemorrhage. Moreover, long and mid intervals improved BCVA and central macular thickness. However, very long interval was associated with an increased risk of postoperative vitreous hemorrhage (RR: 3.27, 95%CI: 1.84 to 5.83). Moreover, mid interval was better than intraoperative IVC in shortening operation time (MD: -19.74, 95%CI: -33.31 to -6.17). Conclusions There are no discernible effects of intraoperative IVC on PDR, but preoperative IVC, except for very long interval, is an effective adjuvant to PPV for treating PDR.
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Affiliation(s)
- Weiwei Wang
- Shaanxi Eye Hospital, Xi’an People’s Hospital (Xi’an Fourth Hospital), Xi’an, China
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27
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Xue Q, Zhang Q, Guo Z, Wu L, Chen Y, Chen Z, Yang K, Cao J. Therapeutic Hypothermia Inhibits Hypoxia-Induced Cardiomyocyte Apoptosis Via the MiR-483-3p/Cdk9 Axis. J Am Heart Assoc 2023; 12:e026160. [PMID: 36789845 PMCID: PMC10111479 DOI: 10.1161/jaha.122.026160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Background Therapeutic hypothermia has a beneficial effect on cardiac function after acute myocardial infarction, but the exact mechanism is still unclear. Recent research has suggested that microRNAs participate in acute myocardial infarction to regulate cardiomyocyte survival. This study aimed to explore the ability of hypothermia-regulated microRNA-483-3p (miR-483-3p) to inhibit hypoxia-induced myocardial infarction. Methods and Results Primary cardiomyocytes were cultured under hypoxia at 32 °C to mimic therapeutic hypothermia, and the differentially expressed microRNAs were determined by RNA sequencing. Therapeutic hypothermia recovered hypoxia-induced increases in apoptosis, decreases in ATP levels, and decreases in miR-483-3p expression. Overexpression of miR-483-3p exhibited effects similar to those of therapeutic hypothermia on hypoxia in the treatment of cardiomyocytes to associate with maintaining the mitochondrial membrane potential, and cyclin-dependent kinase 9 (Cdk9) was identified as a target gene with downregulated expression by miR-483-3p. Knockdown of Cdk9 also promoted cardiac survival, ATP production, and mitochondrial membrane potential stability under hypoxia. In vivo, the expression of miR-483-3p and Cdk9 was tested in the cardiac tissue of the mice with acute myocardial infarction, and the expression of miR-483-3p decreased and Cdk9 increased in the region of myocardial infarction. However, miR-483-3p was overexpressed with lentivirus, which suppressed apoptosis, infarct size (miR-483-3p, 22.00±4.04% versus negative control, 28.57±5.44%, P<0.05), and Cdk9 expression to improve cardiac contractility. Conclusions MiR-483-3p antagonizes hypoxia, leading to cardiomyocyte injury by targeting Cdk9, which is a new mechanism of therapeutic hypothermia.
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Affiliation(s)
- Qiqi Xue
- Department of Geriatrics Ruijin Hospital, Shanghai Jiaotong University School of Medicine Shanghai China
| | - Qianru Zhang
- Department of Cardiology Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine Shanghai China
| | - Zhenzhen Guo
- Department of Cardiovascular Medicine Ruijin Hospital, Shanghai Jiaotong University School of Medicine Shanghai China
| | - Liping Wu
- Department of Cardiac Imaging Center The First Affiliated Hospital, Auhui Medical University Hefei China
| | - Yafen Chen
- Shanghai Institute of Cardiovascular Diseases Zhongshan Hospital, Fudan University Shanghai China
| | - Zhongli Chen
- State Key Laboratory of Cardiovascular Disease Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
| | - Ke Yang
- Department of Cardiovascular Medicine Ruijin Hospital, Shanghai Jiaotong University School of Medicine Shanghai China
| | - Jiumei Cao
- Department of Geriatrics Ruijin Hospital, Shanghai Jiaotong University School of Medicine Shanghai China
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28
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Yu H, Zhang X, Wang X, Chen W, Lao W, Chen Y. MiR-99a-5p Inhibits the Proliferation and Migration of Human Retinal Microvascular Endothelial Cells by Targeting NOX4. Horm Metab Res 2023; 55:142-148. [PMID: 36630972 DOI: 10.1055/a-1982-3926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Diabetic retinopathy is one of the common microvascular complications of diabetes, and it is the main cause of vision loss among working-age people. This study interpreted the roles of miR-99a-5p in DR patients and human retinal microvascular endothelial cell (hRMECs) injury induced by high glucose. The expression of miR-99a-5p was detected in patients with NDR, NPDR, and PDR. The indictive impacts of miR-99a-5p were tested by the ROC curve, and the link between miR-99a-5p and clinical information was verified by the Pearson test. HG was used to instruct cell models. The CCK-8 and transwell methods were performed to detect the proliferative and migrated cells. The targeted relationship was explained by luciferase activity. The content of miR-99a-5p was gradually lessened in NPDR and PDR patients. MiR-99a-5p might differentiate DR patients from NDR patients and PDR patients from NPDR patients. The interconnection between miR-99a-5p and clinical factors was endorsed in all DR patients. Overexpression of miR-99a-5p assuaged the abnormality of cell migration and proliferation of hRMECs triggered by HG. NOX4 was a downstream signaling component of miR-99a-5p. In conclusion, MiR-99a-5p protected hRMECs against HG damage, and the miR-99a-5p might be a novel target for diagnosis of DR.
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Affiliation(s)
- Haizhen Yu
- Department of Clinical Laboratory, Zhucheng People's Hospital, Weifang, China
| | - Xu Zhang
- Department of Ophthalmology, Shanghai Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xuyang Wang
- Hainan Eye Hospital and Key Laboratory of Ophthalmology, Zhongshan Opthalmic Center, Sun Yat-sen University, Haikou, Hainan, China
| | - Wangling Chen
- Hainan Eye Hospital and Key Laboratory of Ophthalmology, Zhongshan Opthalmic Center, Sun Yat-sen University, Haikou, Hainan, China
| | - Wei Lao
- Hainan Eye Hospital and Key Laboratory of Ophthalmology, Zhongshan Opthalmic Center, Sun Yat-sen University, Haikou, Hainan, China
| | - Yunxin Chen
- Hainan Eye Hospital and Key Laboratory of Ophthalmology, Zhongshan Opthalmic Center, Sun Yat-sen University, Haikou, Hainan, China
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29
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Zhou X, Yu G, Yao L. Efficacy of laser photocoagulation plus ranibizumab in patients with diabetic retinopathy and their effect on VEGF. Am J Transl Res 2023; 15:193-201. [PMID: 36777841 PMCID: PMC9908459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/12/2022] [Indexed: 02/14/2023]
Abstract
OBJECTIVE To investigate the efficacy of laser photocoagulation combined with ranibizumab in patients with diabetic retinopathy and their effect on VEGF. METHODS The medical records of 98 patients with diabetic retinopathy treated in the First People's Hospital of Linping District from February 2020 to January 2022 were collected for a retrospective analysis. Among them, 48 patients treated with laser photocoagulation were a control group (CG), and another 50 treated with laser photocoagulation combined with ranibizumab were an observation group (OG). The treatment efficacy, best corrected visual acuity (BCVA), central macular concave thickness (CMT), and change in neovascularization area were compared between the two groups. Also, the changes in serum vascular endothelial growth factor (VEGF), homocysteine (HCY), vitamin B12 and folic acid were compared. The adverse effects that occurred with treatment were assessed. The relationship of pre-treatment BCVA, CMT, neovascularization area and VEGF levels with clinical outcomes were observed, and their predictive values were analyzed by receiver operating characteristic (ROC) curve. RESULTS The total response rate of patients in the CG was lower than that in the OG (P<0.05). The BCVA, CMT, and neovascularization area were dramatically lower, while vitamin B12 and folic acid were markedly higher in the OG than in the CG after treatment (P<0.05). There was no statistical difference in adverse reactions between the two groups (P>0.05). In patients with effective response, the BCVA, CMT, VEGF and Hcy before treatment were dramatically lower than in those with ineffective response (P<0.05), while the neovascularization area, vitamin B12, and folic acid did not differ between them before treatment (P>0.05). ROC curve analysis revealed that the areas under the curve of BCVA, CMT, VEGF and Hcy were all greater than 0.7 for predicting patient outcomes, and the area under the curve of the combination of the above indexes was 0.945, with a specificity of 92.30% and sensitivity of 88.23%. CONCLUSION Laser photocoagulation combined with ranibizumab may provide good therapeutic efficacy in diabetic retinopathy, by effectively improving neovascularization and reducing VEGF levels to control further progression of the lesions.
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30
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Lyttle BD, Vaughn AE, Bardill JR, Apte A, Gallagher LT, Zgheib C, Liechty KW. Effects of microRNAs on angiogenesis in diabetic wounds. Front Med (Lausanne) 2023; 10:1140979. [PMID: 37020673 PMCID: PMC10067680 DOI: 10.3389/fmed.2023.1140979] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/27/2023] [Indexed: 04/07/2023] Open
Abstract
Diabetes mellitus is a morbid condition affecting a growing number of the world population, and approximately one third of diabetic patients are afflicted with diabetic foot ulcers (DFU), which are chronic non-healing wounds that frequently progress to require amputation. The treatments currently used for DFU focus on reducing pressure on the wound, staving off infection, and maintaining a moist environment, but the impaired wound healing that occurs in diabetes is a constant obstacle that must be faced. Aberrant angiogenesis is a major contributor to poor wound healing in diabetes and surgical intervention is often necessary to establish peripheral blood flow necessary for healing wounds. Over recent years, microRNAs (miRNAs) have been implicated in the dysregulation of angiogenesis in multiple pathologies including diabetes. This review explores the pathways of angiogenesis that become dysregulated in diabetes, focusing on miRNAs that have been identified and the mechanisms by which they affect angiogenesis.
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Affiliation(s)
- Bailey D. Lyttle
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
- *Correspondence: Bailey D. Lyttle,
| | - Alyssa E. Vaughn
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
| | - James R. Bardill
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
| | - Anisha Apte
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, College of Medicine, University of Arizona Health Sciences College of Medicine—Tucson, Tucson, AZ, United States
| | - Lauren T. Gallagher
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, School of Medicine, University of Colorado Denver—Anschutz Medical Campus, Aurora, CO, United States
| | - Carlos Zgheib
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, College of Medicine, University of Arizona Health Sciences College of Medicine—Tucson, Tucson, AZ, United States
| | - Kenneth W. Liechty
- Laboratory for Fetal and Regenerative Biology, Department of Surgery, College of Medicine, University of Arizona Health Sciences College of Medicine—Tucson, Tucson, AZ, United States
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31
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Jiang M, Jiang X, Li H, Zhang C, Zhang Z, Wu C, Zhang J, Hu J, Zhang J. The role of mesenchymal stem cell-derived EVs in diabetic wound healing. Front Immunol 2023; 14:1136098. [PMID: 36926346 PMCID: PMC10011107 DOI: 10.3389/fimmu.2023.1136098] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/09/2023] [Indexed: 03/04/2023] Open
Abstract
Diabetic foot is one of the most common complications of diabetes, requiring repeated surgical interventions and leading to amputation. In the absence of effective drugs, new treatments need to be explored. Previous studies have found that stem cell transplantation can promote the healing of chronic diabetic wounds. However, safety issues have limited the clinical application of this technique. Recently, the performance of mesenchymal stem cells after transplantation has been increasingly attributed to their production of exocrine functional derivatives such as extracellular vesicles (EVs), cytokines, and cell-conditioned media. EVs contain a variety of cellular molecules, including RNA, DNA and proteins, which facilitate the exchange of information between cells. EVs have several advantages over parental stem cells, including a high safety profile, no immune response, fewer ethical concerns, and a reduced likelihood of embolism formation and carcinogenesis. In this paper, we summarize the current knowledge of mesenchymal stem cell-derived EVs in accelerating diabetic wound healing, as well as their potential clinic applications.
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Affiliation(s)
- Min Jiang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Xupin Jiang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Hongmei Li
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Can Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Ze Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Chao Wu
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Junhui Zhang
- Department of Geriatic Oncology, Department of Palliative Care, Department of Clinical Nutrition, Chongqing University Cancer Hospital, Chongqing, China.,Endocrinology Department, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Jiongyu Hu
- Endocrinology Department, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Jiaping Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
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32
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He FT, Fu XL, Li MH, Fu CY, Chen JZ. LncRNA SNHG1 targets miR-340-5p/PIK3CA axis to regulate microvascular endothelial cell proliferation, migration, and angiogenesis in DR. Kaohsiung J Med Sci 2023; 39:16-25. [PMID: 36484399 DOI: 10.1002/kjm2.12625] [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: 07/18/2022] [Revised: 09/20/2022] [Accepted: 10/03/2022] [Indexed: 12/13/2022] Open
Abstract
Diabetic retinopathy (DR) is a serious long-term complication of diabetes. However, the current treatment of DR is still challenging. We aimed to investigate the role of lncRNA SNHG1/miR-340-5p/PIK3CA in DR and the mechanisms involved. Blood samples from clinical DR patients and healthy subjects were obtained. HRMECs were induced by high glucose for 24 h to establish the DR model. The vector for interfering or overexpressing lncRNA SNHG1, miR-340-5p, and PIK3CA was constructed. LncRNA SNHG1, miR-340-5p, and PIK3CA expressions were detected by qRT-PCR or Western blot. Cell proliferation and migration were detected by CCK-8 and Transwell assays. Blood vessel formation was detected by angiogenesis assay. Dual-luciferase reporter assay tested the interaction of lncRNA SNHG1 with miR-340-5p and miR-340-5p with PIK3CA. RIP measured the binding of miR-340-5p to PIK3CA. In the blood of DR patients and the DR model, lncRNA SNHG1 was increased and miR-340-5p expression was down-regulated. In the DR model, PIK3CA expression was elevated. Downregulation of lncRNA SNHG1 inhibited HRMECs proliferation, migration, and angiogenesis. LncRNA SNHG1 interacted with miR-340-5p, and up-regulation of miR-340-5p inhibited HRMECs proliferation, migration and angiogenesis. The inhibition of cell proliferation, migration, and angiogenesis of HRMECs caused by down-regulation of lncRNA SNHG1 was reversed by knockdown of miR-340-5p. miR-340-5p targeted PIK3CA, and downregulation of PIK3CA inhibited HRMECs proliferation, migration, and angiogenesis. The inhibition of HRMECs proliferation, migration and angiogenesis caused by down-regulation of lncRNA SNHG1 could be reversed by overexpression of PIK3CA. LncRNA SNHG1 targeted miR-340-5p/PIK3CA axis to regulate microvascular endothelial cell proliferation, migration, and angiogenesis in DR.
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Affiliation(s)
- Fu-Tao He
- Department of Ophthalmology, Hainan Western Central Hospital, Danzhou, Hainan Province, People's Republic of China
| | - Xiao-Lin Fu
- Department of Ophthalmology, Hainan Western Central Hospital, Danzhou, Hainan Province, People's Republic of China
| | - Mo-Han Li
- Department of Ophthalmology, Hainan Western Central Hospital, Danzhou, Hainan Province, People's Republic of China
| | - Chun-Yan Fu
- Department of Ophthalmology, Hainan Western Central Hospital, Danzhou, Hainan Province, People's Republic of China
| | - Jian-Zhi Chen
- Department of Ophthalmology, Hainan Western Central Hospital, Danzhou, Hainan Province, People's Republic of China
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Noncoding RNAs Are Promising Therapeutic Targets for Diabetic Retinopathy: An Updated Review (2017-2022). Biomolecules 2022; 12:biom12121774. [PMID: 36551201 PMCID: PMC9775338 DOI: 10.3390/biom12121774] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/10/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
Diabetic retinopathy (DR) is the most common complication of diabetes. It is also the main cause of blindness caused by multicellular damage involving retinal endothelial cells, ganglial cells, and pigment epithelial cells in adults worldwide. Currently available drugs for DR do not meet the clinical needs; thus, new therapeutic targets are warranted. Noncoding RNAs (ncRNAs), a new type of biomarkers, have attracted increased attention in recent years owing to their crucial role in the occurrence and development of DR. NcRNAs mainly include microRNAs, long noncoding RNAs, and circular RNAs, all of which regulate gene and protein expression, as well as multiple biological processes in DR. NcRNAs, can regulate the damage caused by various retinal cells; abnormal changes in the aqueous humor, exosomes, blood, tears, and the formation of new blood vessels. This study reviews the different sources of the three ncRNAs-microRNAs, long noncoding RNAs, and circular RNAs-involved in the pathogenesis of DR and the related drug development progress. Overall, this review improves our understanding of the role of ncRNAs in various retinal cells and offers therapeutic directions and targets for DR treatment.
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Cai C, Meng C, He S, Gu C, Lhamo T, Draga D, Luo D, Qiu Q. DNA methylation in diabetic retinopathy: pathogenetic role and potential therapeutic targets. Cell Biosci 2022; 12:186. [DOI: 10.1186/s13578-022-00927-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022] Open
Abstract
Abstract
Background
Diabetic retinopathy (DR), a specific neuron-vascular complication of diabetes, is a major cause of vision loss among middle-aged people worldwide, and the number of DR patients will increase with the increasing incidence of diabetes. At present, it is limited in difficult detection in the early stages, limited treatment and unsatisfactory treatment effects in the advanced stages.
Main body
The pathogenesis of DR is complicated and involves epigenetic modifications, oxidative stress, inflammation and neovascularization. These factors influence each other and jointly promote the development of DR. DNA methylation is the most studied epigenetic modification, which has been a key role in the regulation of gene expression and the occurrence and development of DR. Thus, this review investigates the relationship between DNA methylation and other complex pathological processes in the development of DR. From the perspective of DNA methylation, this review provides basic insights into potential biomarkers for diagnosis, preventable risk factors, and novel targets for treatment.
Conclusion
DNA methylation plays an indispensable role in DR and may serve as a prospective biomarker of this blinding disease in its relatively early stages. In combination with inhibitors of DNA methyltransferases can be a potential approach to delay or even prevent patients from getting advanced stages of DR.
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Cao H, Xu X, Wang K, Li C. Down-Regulation of circCOL1A2 Suppresses the Dysfunction of Diabetes-Related Retinal Microvascular Endothelial Cells via miR-646/FGF7 Axis. Curr Eye Res 2022; 47:1525-1533. [PMID: 35924466 DOI: 10.1080/02713683.2022.2110264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE Diabetic retinopathy (DR), the major complication of diabetes, is the leading cause of vision loss and blindness globally. Altered circular RNAs (circRNAs) expression has been found to be involved in DR process. Hence, this work aimed to explore the role and mechanism of circCOL1A2 in DR. METHODS Human retinal microvascular endothelial cells (RMECs) treated with high glucose (HG) were used for functional analysis. Levels of genes and proteins were detected using quantitative real-time polymerase chain reaction and western blotting. In vitro experiments were conducted by transwell, tube formation, CCK-8 assays and ELISA, respectively. The binding interaction between miR-646 and circCOL1A2 or FGF7 (Fibroblast Growth Factor 7) was confirmed using dual-luciferase reporter and RNA immunoprecipitation assays. RESULTS CircCOL1A2 was highly expressed in retinal tissues of DR patients and HG-induced RMECs. Then RMECs were exposed to HG treatment to mimic the diabetic conditions in vitro. Functionally, circCOL1A2 knockdown attenuated HG-evoked RMEC migration, proliferation, angiogenesis, blood-retina barrier (BRB) injury and inflammation. Mechanistically, circCOL1A2 functioned as a sponge for miR-646, and miR-646 directly targeted FGF7. Further rescue experiments showed that miR-646 inhibition abated the protective effects of circCOL1A2 knockdown on RMEC function under HG treatment. Besides that, miR-646 was decreased in HG-induced RMECs, re-expression of miR-646 reversed HG-evoked RMEC dysfunction, which was rescued by FGF7 overexpression. CONCLUSION CircCOL1A2 silencing can suppress HG-induced migration, proliferation, angiogenesis, BRB injury and inflammation in RMECs through miR-646/FGF7 axis, suggesting the potential involvement of circCOL1A2 in DR process.
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Affiliation(s)
- Haijing Cao
- Department of Ophthalmology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Xinhuai Xu
- Department of Ophthalmology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Kai Wang
- Department of Chronic Disease Prevention and Control, Huaian City Center for Disease Control and Prevention, Huai'an, China
| | - Chaopeng Li
- Department of Ophthalmology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
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Ai X, Yu P, Luo L, Sun J, Tao H, Wang X, Meng X. Berberis dictyophylla F. inhibits angiogenesis and apoptosis of diabetic retinopathy via suppressing HIF-1α/VEGF/DLL-4/Notch-1 pathway. JOURNAL OF ETHNOPHARMACOLOGY 2022; 296:115453. [PMID: 35697191 DOI: 10.1016/j.jep.2022.115453] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/28/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Xiao Bopi (XBP, སྐྱེར་བའི་བར་ཤུན།), as a classical Tibetan medicinal plant in China, which derived from the stem bark of Berberis dictyophylla F., has the function of "clearing heat and decreasing mKhris-pa". And it traditionally is utilized to treat the diabetes mellitus and its complications, such as diabetic retinopathy (DR). However, its underlying mechanisms remain unclear. AIM OF THE STUDY The purpose of this study aimed to explore the microvascular protection of water extract of XBP against the spontaneous retinal damage of db/db mice. Meanwhile, the underlying mechanisms of XBP on angiogenesis and apoptosis were further interpreted. MATERIALS AND METHODS We firstly used high-performance liquid chromatography to detected the representative chemical ingredients in the water extract of XBP. The DR model of db/db mice was then randomly divided into five groups: model group, calcium dobesilate (0.23 g/kg) group, and the water extract of XBP (0.375, 0.75 and 1.5 g/kg, respectively) groups. After 8 weeks of continuous administration, the parameters including body weight, fasting blood glucose, oral glucose tolerance test and insulin tolerance test were measured. The pathological changes and abnormal angiogenesis of the retina were detected by optical coherence tomography, HE, periodic acid-Schiff staining and transmission electron microscopy. Simultaneously, molecular docking was used to predict the potential connections between representative ingredients in XBP and angiogenesis/apoptosis-related proteins. The level of angiogenesis-related proteins and gene hypoxia-inducible factor-1α (HIF-1α), vascular endothelial growth (VEGF), delta-like ligand 4 (DLL-4) and Notch-1 were estimated by immunofluorescence analyses and real time-PCR. Further, TUNEL staining and immunofluorescence analyses were performed to investigate the apoptotic phenomenon and the expression of Bax, Bcl-2, Apaf-1, Cyto-c and cleaved caspase-3 and cleaved caspase-9 in the retina. RESULTS Phytochemical analysis revealed that magnoflorine, jatrorrhizine, palmatine and berberine were principally representative ingredients in XBP. The results demonstrated that XBP effectively increased glucose tolerance and insulin sensitivity, whereas no effect on body weight of DR mice. Moreover, retinal thickening, pathological and retinal ultrastructure changes in DR mice were evidently ameliorated by XBP. The molecular docking results demonstrated that the main components of XBP and the protein of angiogenesis and apoptosis had a potential bind. XBP restrained the gene and protein levels of HIF-1α, VEGF, DLL-4 and Notch-1 in retina. Additionally, the TUNEL-positive cell rate and the down-regulated proteins of Bax, Apaf-1, Cyto-c, cleaved Caspase-3 and cleaved Caspase 9 and increased Bcl-2 level were revised by XBP. CONCLUSIONS To sum up, the results suggested that XBP against DR could attribute to alleviating angiogenesis and apoptosis by suppressing the HIF-1α/VEGF/DLL-4/Notch-1 pathway. This evidence sheds a new light on the potential mechanisms of XBP in the treatment of DR.
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Affiliation(s)
- Xiaopeng Ai
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China
| | - Peiling Yu
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China
| | - Liuling Luo
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Jiayi Sun
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Honglin Tao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xiaobo Wang
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Xianli Meng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
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Advanced glycation end products induce Aβ 1-42 deposition and cognitive decline through H19/miR-15b/BACE1 axis in diabetic encephalopathy. Brain Res Bull 2022; 188:187-196. [PMID: 35961529 DOI: 10.1016/j.brainresbull.2022.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/26/2022] [Accepted: 08/08/2022] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Diabetic encephalopathy (DE), a chronic complication of diabetes, is characterized by decline of cognitive function. The molecular mechanism of DE remains unclear. The purpose of this study is to evaluate the roles of advanced glycation end products (AGEs) in the pathogenesis of DE and investigate its underlying mechanisms in this process. METHODS DE rats were developed by incorporating a high-fat diet and streptozotocin injection followed by the Morris Water Maze test. HT-22 cells were used to mimic the in vitro neuronal injuries of DE. Expression levels of long non-coding RNA H19, miR-15b and β-site amyloid precursor protein cleaving enzyme 1 (BACE1) mRNA in the hippocampus of DE rats or HT-22 cells were detected by quantitative real-time polymerase chain reaction (qRT-PCR). The levels of BACE1 proteins were analyzed by western blotting or immunohistochemical staining. The contents of Aβ1-42 in supernatant of the cell culture were analyzed by enzyme-linked immu-nosorbent assay (ELISA). The relationship between H19 or BACE1 and miR-15b was verified with dual-luciferase reporter assay. RESULTS We found that the accumulation of Aβ1-42 and the phosphorylation of Tau (Ser404) were increased in the hippocampus CA3 regionof DE rats. MiR-15b was downregulated while H19 and BACE1 were upregulated in the hippocampus CA3 regionof DE rats and AGEs-treated HT-22 cells. The expression of BACE1 protein was negatively regulated by miR-15b at the post-transcriptional level in HT-22 cells. In vivo, administration of miR-15b mimics by the intranasal delivery markedly decreased the BACE1 protein in hippocampal CA3 region and improved the cognitive decline in DE rats. Besides, the luciferase activity assay confirmed the binding site of miR-15b to both the 3'-untranslated region (3'-UTR) of BACE1 mRNA and H19. Then, miR-15b inhibitor reversed H19 knockdown-mediated decrease of Aβ1-42 level in AGEs-treated HT-22 cells. CONCLUSION These results suggested that AGEs induced Aβ1-42 deposition andcognitive decline through H19/miR-15b/ BACE1 axis in DE.
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Zou J, Tan W, Liu K, Chen B, Duan T, Xu H. Wnt inhibitory factor 1 ameliorated diabetic retinopathy through the AMPK/mTOR pathway-mediated mitochondrial function. FASEB J 2022; 36:e22531. [PMID: 36063130 DOI: 10.1096/fj.202200366rr] [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: 03/10/2022] [Revised: 08/12/2022] [Accepted: 08/23/2022] [Indexed: 11/11/2022]
Abstract
Diabetic retinopathy (DR) is one of the most common complications of diabetes mellitus and will lead to visual impairment. We aim to explore the effects and mechanisms of wnt inhibitory factor 1 (WIF1) in the progression of DR. To establish DR in vitro and in vivo, human retinal pigment epithelium (RPE) cell line ARPE-19 was treated with high-glucose (HG) and diabetic mice models were induced by streptozotocin (STZ), respectively. Different dose of recombinant WIF1 protein was used to treat DR. qRT-PCR and western blotting results demonstrated that WIF1 was downregulated, while VEGFA was upregulated in HG-induced ARPE-19 cells. WIF1 overexpression promoted cell migration. The ARPE-19 cells culture medium treated with WIF1 inhibited retinal endothelial cell tube formation and downregulated VEGFA expression. Moreover, WIF1 decreased the levels of ROS and MDA, while increasing the activity of SOD and GPX. WIF1 increased the ΔΨm in the mitochondria and downregulated the expression of mitochondrial autophagy-related proteins including Parkin, Pink1, LC3-II/LC3-I ratio, cleaved caspase 3, and cyt-c, which ameliorated mitochondrial dysfunction. The in vivo studies further demonstrated the consistent effects of WIF1 in STZ-induced mice. Taken together, WIF1 ameliorated mitochondrial dysfunction in DR by downregulating the AMPK/mTOR pathway.
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Affiliation(s)
- Jing Zou
- Eye Center of Xiangya Hospital, Central South University, Changsha, P.R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Wei Tan
- Eye Center of Xiangya Hospital, Central South University, Changsha, P.R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Kangcheng Liu
- Eye Center of Xiangya Hospital, Central South University, Changsha, P.R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Bolin Chen
- Eye Center of Xiangya Hospital, Central South University, Changsha, P.R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, P.R. China
| | - TianQi Duan
- Eye Center of Xiangya Hospital, Central South University, Changsha, P.R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Huizhuo Xu
- Eye Center of Xiangya Hospital, Central South University, Changsha, P.R. China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, P.R. China
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CircRNA SCMH1 regulates the miR-200a-3p/ZEB1 signaling axis to promote diabetes-induced retinal epithelial-mesenchymal transition. Exp Eye Res 2022; 224:109264. [PMID: 36162459 DOI: 10.1016/j.exer.2022.109264] [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: 01/11/2022] [Revised: 08/23/2022] [Accepted: 09/19/2022] [Indexed: 11/22/2022]
Abstract
Diabetic retinopathy (DR) is one of the common systemic complications of diabetes. Epithelial-mesenchymal transition (EMT) is required for DR progression. Previous studies have explored that circular RNAs (circRNAs) are crucial for DR development. Herein, we focused on the biological functions of circSCMH1 in DR. RT-qPCR determined the expression of circSCMH1, miR-200a-3p and ZEB1. EMT-related proteins were measured by Western blot. Gene combinations were validated by RIP and dual luciferase reporter assays. CCK-8, EdU, TUNEL staining and Transwell analysis were used to assess the cellular function. FISH analysis assessed the localization of circSCMH1 and miR-200a-3p. HE staining was used to detect retinal structures in a mouse DR model. High-glucose (HG) significantly increased circSCMH1 expression in ARPE-19 cells. Additionally, circSCMH1 silencing repressed proliferation, migration, and EMT in HG cells. Mechanistically, circSCMH1 positively regulated ZEB1 expression via targeting miR-200a-3p. Furthermore, circSCMH1 was observed to induce HG cell growth and EMT by regulating the miR-200a-3p/ZEB1 axis. Finally, we verified that downregulation of circSCMH1 or ZEB1 alleviated EMT in the retina of diabetic mice. These findings have implications for new therapeutic targets for DR.
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miR-142 Targets TIM-1 in Human Endothelial Cells: Potential Implications for Stroke, COVID-19, Zika, Ebola, Dengue, and Other Viral Infections. Int J Mol Sci 2022; 23:ijms231810242. [PMID: 36142146 PMCID: PMC9499484 DOI: 10.3390/ijms231810242] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 11/30/2022] Open
Abstract
T-cell immunoglobulin and mucin domain 1 (TIM-1) has been recently identified as one of the factors involved in the internalization of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in human cells, in addition to angiotensin-converting enzyme 2 (ACE2), transmembrane serine protease 2 (TMPRSS2), neuropilin-1, and others. We hypothesized that specific microRNAs could target TIM-1, with potential implications for the management of patients suffering from coronavirus disease 2019 (COVID-19). By combining bioinformatic analyses and functional assays, we identified miR-142 as a specific regulator of TIM-1 transcription. Since TIM-1 has been implicated in the regulation of endothelial function at the level of the blood-brain barrier (BBB) and its levels have been shown to be associated with stroke and cerebral ischemia-reperfusion injury, we validated miR-142 as a functional modulator of TIM-1 in human brain microvascular endothelial cells (hBMECs). Taken together, our results indicate that miR-142 targets TIM-1, representing a novel strategy against cerebrovascular disorders, as well as systemic complications of SARS-CoV-2 and other viral infections.
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Beverley KM, Pattnaik BR. Inward rectifier potassium (Kir) channels in the retina: living our vision. Am J Physiol Cell Physiol 2022; 323:C772-C782. [PMID: 35912989 PMCID: PMC9448332 DOI: 10.1152/ajpcell.00112.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/25/2022] [Accepted: 07/25/2022] [Indexed: 11/22/2022]
Abstract
Channel proteins are vital for conducting ions throughout the body and are especially relevant to retina physiology. Inward rectifier potassium (Kir) channels are a class of K+ channels responsible for maintaining membrane potential and extracellular K+ concentrations. Studies of the KCNJ gene (that encodes Kir protein) expression identified the presence of all of the subclasses (Kir 1-7) of Kir channels in the retina or retinal-pigmented epithelium (RPE). However, functional studies have established the involvement of the Kir4.1 homotetramer and Kir4.1/5.1 heterotetramer in Müller glial cells, Kir2.1 in bipolar cells, and Kir7.1 in the RPE cell physiology. Here, we propose the potential roles of Kir channels in the retina based on the physiological contributions to the brain, pancreatic, and cardiac tissue functions. There are several open questions regarding the expressed KCNJ genes in the retina and RPE. For example, why does not the Kir channel subtype gene expression correspond with protein expression? Catching up with multiomics or functional "omics" approaches might shed light on posttranscriptional changes that might influence Kir subunit mRNA translation within the retina that guides our vision.
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Affiliation(s)
- Katie M Beverley
- Endocrinology and Reproductive Physiology Graduate Program, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
- McPherson Eye Research Institute, University of Wisconsin, Madison, Wisconsin
| | - Bikash R Pattnaik
- Endocrinology and Reproductive Physiology Graduate Program, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
- McPherson Eye Research Institute, University of Wisconsin, Madison, Wisconsin
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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Wei L, Sun X, Fan C, Li R, Zhou S, Yu H. The pathophysiological mechanisms underlying diabetic retinopathy. Front Cell Dev Biol 2022; 10:963615. [PMID: 36111346 PMCID: PMC9468825 DOI: 10.3389/fcell.2022.963615] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/12/2022] [Indexed: 12/04/2022] Open
Abstract
Diabetic retinopathy (DR) is the most common complication of diabetes mellitus (DM), which can lead to visual impairment and even blindness in severe cases. DR is generally considered to be a microvascular disease but its pathogenesis is still unclear. A large body of evidence shows that the development of DR is not determined by a single factor but rather by multiple related mechanisms that lead to different degrees of retinal damage in DR patients. Therefore, this article briefly reviews the pathophysiological changes in DR, and discusses the occurrence and development of DR resulting from different factors such as oxidative stress, inflammation, neovascularization, neurodegeneration, the neurovascular unit, and gut microbiota, to provide a theoretical reference for the development of new DR treatment strategies.
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Affiliation(s)
- Lindan Wei
- Special Key Laboratory of Ocular Diseases of Guizhou Province, Department of Immunology, Zunyi Medical University, Zunyi, China
| | - Xin Sun
- Special Key Laboratory of Gene Detection and Therapy of Guizhou Province, School of Basic Medical Sciences, Zunyi Medical University, Zunyi, China
| | - Chenxi Fan
- Special Key Laboratory of Ocular Diseases of Guizhou Province, Department of Immunology, Zunyi Medical University, Zunyi, China
| | - Rongli Li
- Special Key Laboratory of Ocular Diseases of Guizhou Province, Department of Immunology, Zunyi Medical University, Zunyi, China
| | - Shuanglong Zhou
- Special Key Laboratory of Ocular Diseases of Guizhou Province, Department of Immunology, Zunyi Medical University, Zunyi, China
| | - Hongsong Yu
- Special Key Laboratory of Ocular Diseases of Guizhou Province, Department of Immunology, Zunyi Medical University, Zunyi, China
- *Correspondence: Hongsong Yu,
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Song Q, Zhang Y, Zhang M, Ma X, Zhang Q, Zhao C, Zhang Z, Zhao H, Hu W, Zhang X, Ren X, An M, Yang J, Liu Y. Identifying gene variants underlying the pathogenesis of diabetic retinopathy based on integrated genomic and transcriptomic analysis of clinical extreme phenotypes. Front Genet 2022; 13:929049. [PMID: 36035153 PMCID: PMC9399422 DOI: 10.3389/fgene.2022.929049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
Diabetic retinopathy (DR) is a common complication and the leading cause of blindness in patients with type 2 diabetes. DR has been shown to be closely correlated with blood glucose levels and the duration of diabetes. However, the onset and progression of DR also display clinical heterogeneity. We applied whole-exome sequencing and RNA-seq approaches to study the gene mutation and transcription profiles in three groups of diabetic patients with extreme clinical phenotypes in DR onset, timing, and disease progression, aiming to identify genetic variants that may play roles in the pathogenesis of DR. We identified 23 putatively pathogenic genes, and ingenuity pathway analysis of these mutated genes reveals their functional association with glucose metabolism, diabetic complications, neural system activity, and dysregulated immune responses. In addition, ten potentially protective genes were also proposed. These findings shed light on the mechanisms underlying the pathogenesis of DR and may provide potential targets for developing new strategies to combat DR.
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Affiliation(s)
- Qiaoling Song
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yuchao Zhang
- Department of Endocrinology, Qingdao Municipal Hospital, Qingdao, China
| | - Minghui Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiaoli Ma
- Department of Endocrinology, Qingdao Municipal Hospital, Qingdao, China
| | - Qianyue Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Chenyang Zhao
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Zhongwen Zhang
- Department of Endocrinology and Metabolism, the First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Huichen Zhao
- Department of Endocrinology, Qingdao Municipal Hospital, Qingdao, China
| | - Wenchao Hu
- Department of Endocrinology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Xinxin Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiwen Ren
- Department of Emergency, Linyi People's Hospital, Linyi, China
| | - Ming An
- Department of Ophthalmology, Qingdao Municipal Hospital, Qingdao, China
| | - Jinbo Yang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yuantao Liu
- Department of Endocrinology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
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44
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Sun S, Wang F, Sun Y, Bai L. miR-146a suppresses the expression of vascular endothelial growth factor and inflammatory responses in diabetic retinopathy. Growth Factors 2022; 40:89-97. [PMID: 35605149 DOI: 10.1080/08977194.2022.2077732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
This study was designed to explore the role of miR-146a in diabetic retinopathy (DR). 30 healthy control (HC), 50 patients with type 2 diabetes mellitus, and 48 DR patients were enrolled. Blood was collected and levels of miR-146a expression, vascular endothelial growth factor (VEGF), and three inflammatory cytokines (NF-κB, IL-1β, and TNF-α) were detected. Moreover, ARPE-19 cells were treated with miR-146a mimic or inhibitor in the presence of high glucose to evaluate its effect in vitro. DR patients had the lowest level of miR-146a and the highest level of VEGF as well as the most severe inflammation among the three groups. In addition, the miR-146a level was negatively correlated with the expression of VEGF and three inflammatory cytokines, respectively in DR patients. Moreover, VEGF expression was positively correlated with these three inflammatory cytokines in DR patients. In summary, miR-146a could inhibit VEGF expression and inflammation in DR.
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Affiliation(s)
- Shichao Sun
- Department of Neurology, The Second Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Fujun Wang
- Department of Endocrinology, The Fourth Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Yao Sun
- Department of Radiology, The Hebei Province Hospital of TCM, Shijiazhuang, Hebei, China
| | - Lei Bai
- Department of Endocrinology, The Fourth Hospital, Hebei Medical University, Shijiazhuang, Hebei, China
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45
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Liu X, Zhou X, Song W, Zeng J, Niu X, Meng R. The Diagnostic Value of Circulating VEGF in Diabetic Retinopathy in Asia: A Systematic Review and Meta-analysis. Ophthalmic Epidemiol 2022; 30:230-238. [PMID: 35796414 DOI: 10.1080/09286586.2022.2088805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
PURPOSE Vascular endothelial growth factor (VEGF) has obvious clinical value in diabetes, but the conclusions on the diagnostic value of diabetic retinopathy (DR) are not consistent. This study aims to comprehensively evaluate the accuracy of circulating VEGF in the diagnosis of DR in the Asian population by a method of meta-analysis. METHODS PubMed, Cochrane Library, Embase, Web of Science, China National Knowledge Infrastructure (CNKI), and China Wanfang Databases were searched for relevant studies on the diagnostic value of VEGF for DR in Asia up to November 2021. The pooled sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic odds ratio (DOR), and areas under the curve (AUC) were calculated by Stata 15.0 software. RESULTS After screening, eight eligible studies were enrolled, including 547 patients with DR. The results of the meta-analysis showed that the pooled DOR, sensitivity, specificity, PLR, and NLR were 31.67 (95%CI: 13.55 ~ 74.05), 0.86 (95%CI: 0.74 ~ 0.93), 0.84 (95%CI: 0.80 ~ 0.87), 5.33 (95%CI: 4.09 ~ 6.93), 0.17 (95%CI: 0.09 ~ 0.32), respectively. The AUC was 0.86 (95%CI: 0.82 ~ 0.89). CONCLUSION Circulating VEGF has a good diagnostic value in DR in the Asian population, with the potential to be an early diagnostic marker for DR.
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Affiliation(s)
- Xiaobing Liu
- Department of Endocrinology, HuiDong People's Hospital, Huizhou, Guangdong, China
| | - Xiaoping Zhou
- Department of Ophthalmology, Chenzhou First People's Hospital, Chenzhou, Hunan, China
| | - Weiqiong Song
- Department of Ophthalmology, Chenzhou First People's Hospital, Chenzhou, Hunan, China
| | - Jiechun Zeng
- Department of Endocrinology, HuiDong People's Hospital, Huizhou, Guangdong, China
| | - Xiuxiu Niu
- Department of Endocrinology, HuiDong People's Hospital, Huizhou, Guangdong, China
| | - Ran Meng
- Cadre Ward, The 903rd Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army, Hangzhou, Zhejiang, China
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Yang J, Liu Z. Mechanistic Pathogenesis of Endothelial Dysfunction in Diabetic Nephropathy and Retinopathy. Front Endocrinol (Lausanne) 2022; 13:816400. [PMID: 35692405 PMCID: PMC9174994 DOI: 10.3389/fendo.2022.816400] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/28/2022] [Indexed: 12/15/2022] Open
Abstract
Diabetic nephropathy (DN) and diabetic retinopathy (DR) are microvascular complications of diabetes. Microvascular endothelial cells are thought to be the major targets of hyperglycemic injury. In diabetic microvasculature, the intracellular hyperglycemia causes damages to the vascular endothelium, via multiple pathophysiological process consist of inflammation, endothelial cell crosstalk with podocytes/pericytes and exosomes. In addition, DN and DR diseases development are involved in several critical regulators including the cell adhesion molecules (CAMs), the vascular endothelial growth factor (VEGF) family and the Notch signal. The present review attempts to gain a deeper understanding of the pathogenesis complexities underlying the endothelial dysfunction in diabetes diabetic and retinopathy, contributing to the development of new mechanistic therapeutic strategies against diabetes-induced microvascular endothelial dysfunction.
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Affiliation(s)
- Jing Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, Zhengzhou, China
| | - Zhangsuo Liu
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, Zhengzhou, China
- Department of Integrated Traditional and Western Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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47
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Xue B, Wang Y. Naringenin upregulates GTPCH1/eNOS to ameliorate high glucose‑induced retinal endothelial cell injury. Exp Ther Med 2022; 23:428. [PMID: 35607381 PMCID: PMC9121200 DOI: 10.3892/etm.2022.11355] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/18/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Bing Xue
- Health Management Center of Dalian Second People's Hospital, Dalian, Liaoning 116011, P.R. China
| | - Yu Wang
- Medical Department of Dalian Second People's Hospital, Dalian, Liaoning 116011, P.R. China
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48
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Oltra M, Martínez-Santos M, Ybarra M, Rowland H, Muriach M, Romero J, Sancho-Pelluz J, Barcia JM. Oxidative-Induced Angiogenesis Is Modulated by Small Extracellular Vesicle miR-302a-3p Cargo in Retinal Pigment Epithelium Cells. Antioxidants (Basel) 2022; 11:antiox11050818. [PMID: 35624680 PMCID: PMC9137950 DOI: 10.3390/antiox11050818] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 11/16/2022] Open
Abstract
Extracellular vesicles are released from cells under diverse conditions. Widely studied in cancer, they are associated with different diseases playing major roles. Recent reports indicate that oxidative damage promotes the release of small extracellular vesicle (sEVs) from the retinal pigment epithelium (RPE), with an angiogenic outcome and changes in micro-RNA (miRNA) levels. The aim of this study was to determine the role of the miRNA miR-302a-3p, included within RPE-released sEVs, as an angiogenic regulator in cultures of endothelial cells (HUVEC). ARPE-19 cell cultures, treated with H2O2 to cause an oxidative insult, were transfected with a miR-302a-3p mimic. Later, sEVs from the medium were isolated and added into HUVEC or ARPE-19 cultures. sEVs from ARPE-19 cells under oxidative damage presented a decrease of miR-302a-3p levels and exhibited proangiogenic properties. In contrast, sEVs from miR-302a-3p-mimic transfected cells resulted in control angiogenic levels. The results herein indicate that miR-302a-3p contained in sEVs can modify VEGFA mRNA expression levels as part of its antiangiogenic features.
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Affiliation(s)
- Maria Oltra
- Neurophysiology and Neurobiology, School of Medicine and Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (M.M.-S.); (M.Y.); (H.R.); (J.M.B.)
- Centro de Investigación Translacional San Alberto Magno, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain
- Correspondence: (M.O.); (J.S.-P.)
| | - Miriam Martínez-Santos
- Neurophysiology and Neurobiology, School of Medicine and Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (M.M.-S.); (M.Y.); (H.R.); (J.M.B.)
- Centro de Investigación Translacional San Alberto Magno, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain
- Doctoral School, Catholic University of Valencia San Vicente Mártir, 46002 Valencia, Spain
| | - María Ybarra
- Neurophysiology and Neurobiology, School of Medicine and Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (M.M.-S.); (M.Y.); (H.R.); (J.M.B.)
- Centro de Investigación Translacional San Alberto Magno, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain
| | - Hugo Rowland
- Neurophysiology and Neurobiology, School of Medicine and Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (M.M.-S.); (M.Y.); (H.R.); (J.M.B.)
| | - María Muriach
- School of Health Sciences, University Jaume I, Av. Vicent Sos Baynat, 12006 Castellón de la Plana, Spain;
| | - Javier Romero
- Hospital General de Requena, Hospital de Requena Calle Casablanca, 46340 Valencia, Spain;
| | - Javier Sancho-Pelluz
- Neurophysiology and Neurobiology, School of Medicine and Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (M.M.-S.); (M.Y.); (H.R.); (J.M.B.)
- Centro de Investigación Translacional San Alberto Magno, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain
- Correspondence: (M.O.); (J.S.-P.)
| | - Jorge M. Barcia
- Neurophysiology and Neurobiology, School of Medicine and Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (M.M.-S.); (M.Y.); (H.R.); (J.M.B.)
- Centro de Investigación Translacional San Alberto Magno, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain
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49
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Yang Q, Li S, Zhou Z, Yang X, Liu Y, Hao K, Fu M. Trimetazidine mitigates high glucose-induced retinal endothelial dysfunction by inhibiting PI3K/Akt/mTOR pathway-mediated autophagy. Bioengineered 2022; 13:7515-7527. [PMID: 35259050 PMCID: PMC8974130 DOI: 10.1080/21655979.2022.2048993] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Trimetazidine (TMZ), as a metabolic regulator, has been widely testified to exhibit positive therapeutic effects on various disease models, but its role in diabetic retinopathy has not been reported. Therefore, this study was designed with the purpose of exploring the effects of TMZ on high-glucose (HG)-induced retinal endothelial dysfunction and its underlying mechanism. To establish DR model in vitro, 30 mM glucose was applied to induce human retinal endothelial cells (HRECs). Cell proliferation, invasion, and migration were examined by means of Cell Counting Kit-8, transwell, and wound healing assays, respectively. The tubule formation experiment was used to test the tubulogenesis ability and fluorescein isothiocyanate (FITC)-albumin was utilized to measure the permeability of monolayer HRECs. In addition, immunofluorescence and Western blot were employed to detect protein expression. Compared with the HG-induced group, TMZ concentration dependently inhibited the proliferation, migration, and angiogenesis of HG-induced HRECs, decreased the permeability of monolayer HRECs, and increased the protein expression levels of Claudin-5 and VE-cadherin. In addition, TMZ intervention increased the expression of p-PI3K, p-AKT, and p-mTOR but decreased the expression of LC3I, LC3II, and Beclin 1, which were then partially reversed by P13 K inhibitor (LY294002). Moreover, the autophagy agonist rapamycin (RAPA) was also testified to reverse the inhibitory effects of TMZ on the proliferation, migration, and angiogenesis of HG-induced HRECs. In summary, TMZ inhibited excessive autophagy by activating PI3K/Akt/mTOR pathway, thereby improving retinal endothelial dysfunction induced by HG.
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Affiliation(s)
- Qingsong Yang
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
| | - Sizhen Li
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
| | - Zixiu Zhou
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
| | - Xiaodong Yang
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
| | - Yating Liu
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
| | - Kuanxiao Hao
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
| | - Min Fu
- Nanjing Tongren Eye Center, Nanjing Tongren Hospital, School of Medicine Southeast University, Nanjing, P.R. China
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50
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Chen Z, Yang J, Gao Y, Jiang S, Li Z, Wang Y, Hu Z, Han F, Ni N. LncRNA MALAT1 aggravates the retinal angiogenesis via miR-320a/HIF-1α axis in diabetic retinopathy. Exp Eye Res 2022; 218:108984. [PMID: 35202706 DOI: 10.1016/j.exer.2022.108984] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 01/26/2022] [Accepted: 02/10/2022] [Indexed: 11/28/2022]
Abstract
Diabetic retinopathy (DR) is one of the most serious microvascular complications of diabetes and an important cause of blindness in adults. In previous study, we found that miR-320a alleviated the damage of muller cells in DR. In this study, we mainly explored the mechanism of lncRNA MALAT1 on retinal angiogenesis in DR by regulating miR-320a/HIF-1α. The expression of MALAT1 and miR-320a was detected by RT-qPCR, and the expression of HIF-1α was detected by Western blot. The superoxide anion level, invasion, angiogenesis, and vascular permeability of mouse retinal microvascular endothelial cells (MRMECs) co-cultured with muller cells were evaluated by dihydroethidium, transwell, angiogenesis and immunofluorescence assay. In order to analyze the targeting relationship between miR-320a and MALAT1 or HIF-1α, we performed dual luciferase reporter gene, fluorescence in situ hybridization (FISH), RNA immunoprecipitation (RIP) and RNA pulldown experiments. The results should that MALAT1 and HIF-1α were highly expressed and miR-320a was low expressed in high glucose (HG)-induced muller cells, and MALAT1 could competitively bind with HIF-1α. Knocking down miR-320a inhibited MRMECs invasion angiogenesis, and vascular permeability by targeting miR-320a. Overexpression of miR-320a down regulated HIF-1α and inhibited the invasion, angiogenesis, and vascular permeability of MRMECs. In conclusion, MALAT1 inhibits HIF-1α expression and MRMECs angiogenesis in DR through spongy miR-320a.
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Affiliation(s)
- Zhen Chen
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China; Medical College of Kunming University of Science and Technology, Kunming, Yunnan, 650500, China; Medical College of Dali University, Dali, Yunnan, 671003, China
| | - Jingying Yang
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Yang Gao
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Shanshan Jiang
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China; Medical College of Dali University, Dali, Yunnan, 671003, China
| | - Zuyou Li
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China; Medical College of Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Yao Wang
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China; Medical College of Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Zhongyin Hu
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Fang Han
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China
| | - Ninghua Ni
- Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, China.
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