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Filipowska J, Cisneros Z, Leon-Rivera N, Wang P, Kang R, Lu G, Yuan YC, Bhattacharya S, Dhawan S, Garcia-Ocaña A, Kondegowda NG, Vasavada RC. LGR4 is essential for maintaining β-cell homeostasis through suppression of RANK. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.10.593645. [PMID: 38798561 PMCID: PMC11118322 DOI: 10.1101/2024.05.10.593645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Pancreatic β-cell stress contributes to diabetes progression. This study demonstrates that Leucine-rich repeat-containing G-protein-coupled-receptor-4 (LGR4) is critical for maintaining β-cell health and is modulated by stressors. In vitro , Lgr4 knockdown decreases proliferation and survival in rodent β-cells, while overexpression protects against cytokine-induced cell death in rodent and human β-cells. Mechanistically, LGR4 suppresses Receptor Activator of Nuclear Factor Kappa B (NFκB) (RANK) and its subsequent activation of NFκB to protect β-cells. β-cell-specific Lgr4 -conditional knockout (cko) mice exhibit normal glucose homeostasis but increased β-cell death in both sexes and decreased proliferation only in females. Male Lgr4 cko mice under stress display reduced β-cell proliferation and a further increase in β-cell death. Upon aging, both male and female Lgr4 cko mice display impaired β-cell homeostasis, however, only female mice are glucose intolerant with decreased plasma insulin. We show that LGR4 is required for maintaining β-cell health under basal and stress-induced conditions, through suppression of RANK. Teaser LGR4 receptor is critical for maintaining β-cell health under basal and stressed conditions, through suppression of RANK.
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Zhang J, Jiang J, Liu H, Wang S, Ke K, Liu S, Jiang Y, Liu L, Gao X, He B, Su Y. BMP9 induces osteogenic differentiation through up-regulating LGR4 via the mTORC1/Stat3 pathway in mesenchymal stem cells. Genes Dis 2024; 11:101075. [PMID: 38292169 PMCID: PMC10825279 DOI: 10.1016/j.gendis.2023.101075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 06/21/2023] [Accepted: 07/24/2023] [Indexed: 02/01/2024] Open
Abstract
Bone defects and non-union are prevalent in clinical orthopedy, and the outcomes of current treatments are often suboptimal. Bone tissue engineering offers a promising approach to treating these conditions effectively. Bone morphogenetic protein 9 (BMP9) can commit mesenchymal stem cells to osteogenic lineage, and a knowledge of the underlying mechanisms may help advance the field of bone tissue engineering. Leucine-rich repeats containing G protein-coupled receptor 4 (LGR4), a member of G protein-coupled receptors, is essential for modulating bone development. This study is aimed at investigating the impact of LGR4 on BMP9-induced osteogenesis in mesenchymal stem cells as well as the underlying mechanisms. Bone marrow stromal cells from BMP9-knockout mice exhibited diminished LGR4 expression, and exogenous LGR4 clearly restored the impaired osteogenic potency of the bone marrow stromal cells. Furthermore, LGR4 expression was increased by BMP9 in C3H10T1/2 cells. LGR4 augmented the benefits of BMP9-induced osteogenic markers and bone formation, whereas LGR4 inhibition restricted these effects. Meanwhile, the BMP9-induced lipogenic markers were increased by LGR4 inhibition. The protein levels of Raptor and p-Stat3 were elevated by BMP9. Raptor knockdown or p-Stat3 suppression attenuated the osteoblastic markers and LGR4 expression brought on by BMP9. LGR4 significantly reversed the blocking effect of Raptor knockdown or p-Stat3 suppression on the BMP9-induced osteoblastic markers. Raptor interacts with p-Stat3, and p-Stat3 activates the LGR4 promoter activity. In conclusion, LGR4 boosts BMP9 osteoblastic potency in mesenchymal stem cells, and BMP9 may up-regulate LGR4 via the mTORC1/Stat3 signal activation.
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Affiliation(s)
- Jie Zhang
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Jinhai Jiang
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Hang Liu
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
- Department of Orthopedics, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Shiyu Wang
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Kaixin Ke
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Siyuan Liu
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
- Department of Orthopedics, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yue Jiang
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Lu Liu
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Xiang Gao
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
- Department of Orthopedics, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Baicheng He
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Yuxi Su
- Orthopedics Department, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
- China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Jiangxi Hospital Affiliated Children’s Hospital of Chongqing Medical University, Jiangxi 330000, China
- National Clinical Research Center for Child Health and Disorders, China
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Su Y, Yu G, Li D, Lu Y, Ren C, Xu Y, Yang Y, Zhang K, Ma T, Li Z. Identification of mitophagy-related biomarkers in human osteoporosis based on a machine learning model. Front Physiol 2024; 14:1289976. [PMID: 38260098 PMCID: PMC10800828 DOI: 10.3389/fphys.2023.1289976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
Background: Osteoporosis (OP) is a chronic bone metabolic disease and a serious global public health problem. Several studies have shown that mitophagy plays an important role in bone metabolism disorders; however, its role in osteoporosis remains unclear. Methods: The Gene Expression Omnibus (GEO) database was used to download GSE56815, a dataset containing low and high BMD, and differentially expressed genes (DEGs) were analyzed. Mitochondrial autophagy-related genes (MRG) were downloaded from the existing literature, and highly correlated MRG were screened by bioinformatics methods. The results from both were taken as differentially expressed (DE)-MRG, and Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis were performed. Protein-protein interaction network (PPI) analysis, support vector machine recursive feature elimination (SVM-RFE), and Boruta method were used to identify DE-MRG. A receiver operating characteristic curve (ROC) was drawn, a nomogram model was constructed to determine its diagnostic value, and a variety of bioinformatics methods were used to verify the relationship between these related genes and OP, including GO and KEGG analysis, IP pathway analysis, and single-sample Gene Set Enrichment Analysis (ssGSEA). In addition, a hub gene-related network was constructed and potential drugs for the treatment of OP were predicted. Finally, the specific genes were verified by real-time quantitative polymerase chain reaction (RT-qPCR). Results: In total, 548 DEGs were identified in the GSE56815 dataset. The weighted gene co-expression network analysis(WGCNA) identified 2291 key module genes, and 91 DE-MRG were obtained by combining the two. The PPI network revealed that the target gene for AKT1 interacted with most proteins. Three MRG (NELFB, SFSWAP, and MAP3K3) were identified as hub genes, with areas under the curve (AUC) 0.75, 0.71, and 0.70, respectively. The nomogram model has high diagnostic value. GO and KEGG analysis showed that ribosome pathway and cellular ribosome pathway may be the pathways regulating the progression of OP. IPA showed that MAP3K3 was associated with six pathways, including GNRH Signaling. The ssGSEA indicated that NELFB was highly correlated with iDCs (cor = -0.390, p < 0.001). The regulatory network showed a complex relationship between miRNA, transcription factor(TF) and hub genes. In addition, 4 drugs such as vinclozolin were predicted to be potential therapeutic drugs for OP. In RT-qPCR verification, the hub gene NELFB was consistent with the results of bioinformatics analysis. Conclusion: Mitophagy plays an important role in the development of osteoporosis. The identification of three mitophagy-related genes may contribute to the early diagnosis, mechanism research and treatment of OP.
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Affiliation(s)
- Yu Su
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Gangying Yu
- Department of International Ward (Orthopedic), Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dongchen Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yao Lu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Cheng Ren
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yibo Xu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yanling Yang
- Basic Medical College of Yan’an University, Yan’an, China
| | - Kun Zhang
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Teng Ma
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Zhong Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
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Liu D, Bae YE, Zhu J, Zhang Z, Sun Y, Deng Y, Wu C, Wu L. Splicing transcriptome-wide association study to identify splicing events for pancreatic cancer risk. Carcinogenesis 2023; 44:741-747. [PMID: 37769343 DOI: 10.1093/carcin/bgad069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 09/30/2023] Open
Abstract
A large proportion of the heritability of pancreatic cancer risk remains elusive, and the contribution of specific mRNA splicing events to pancreatic cancer susceptibility has not been systematically evaluated. In this study, we performed a large splicing transcriptome-wide association study (spTWAS) using three modeling strategies (Enet, LASSO and MCP) to develop alternative splicing genetic prediction models for identifying novel susceptibility loci and splicing introns for pancreatic cancer risk by assessing 8275 pancreatic cancer cases and 6723 controls of European ancestry. Data from 305 subjects of whom the majority are of European descent in the Genotype-Tissue Expression Project (GTEx) were used and both cis-acting and promoter-enhancer interaction regions were considered to build these models. We identified nine splicing events of seven genes (ABO, UQCRC1, STARD3, ETAA1, CELA3B, LGR4 and SFT2D1) that showed an association of genetically predicted expression with pancreatic cancer risk at a false discovery rate ≤0.05. Of these genes, UQCRC1 and LGR4 have not yet been reported to be associated with pancreatic cancer risk. Fine-mapping analyses supported likely causal associations corresponding to six splicing events of three genes (P4HTM, ABO and PGAP3). Our study identified novel genes and splicing events associated with pancreatic cancer risk, which can improve our understanding of the etiology of this deadly malignancy.
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Affiliation(s)
- Duo Liu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, P.R. China
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Ye Eun Bae
- Department of Statistics, Florida State University, Tallahassee, FL 32304, USA
| | - Jingjing Zhu
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Zichen Zhang
- Department of Statistics, Florida State University, Tallahassee, FL 32304, USA
| | - Yanfa Sun
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI, USA
- College of Life Science, Longyan University, Longyan, Fujian 364012, P.R. China
- Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan, Fujian 364012, P.R. China
- Fujian Provincial Universities Key Laboratory of Preventive Veterinary Medicine and Biotechnology (Longyan University), Longyan, Fujian 364012, P.R. China
| | - Youping Deng
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Chong Wu
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lang Wu
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI, USA
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Watanabe K, Horie M, Hayatsu M, Mikami Y, Sato N. Spatiotemporal expression patterns of R-spondins and their receptors, Lgrs, in the developing mouse telencephalon. Gene Expr Patterns 2023; 49:119333. [PMID: 37651925 DOI: 10.1016/j.gep.2023.119333] [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: 03/27/2023] [Revised: 05/14/2023] [Accepted: 08/24/2023] [Indexed: 09/02/2023]
Abstract
Development of the mammalian telencephalon, which is the most complex region of the central nervous system, is precisely orchestrated by many signaling molecules. Wnt signaling derived from the cortical hem, a signaling center, is crucial for telencephalic development including cortical patterning and the induction of hippocampal development. Secreted protein R-spondin (Rspo) 1-4 and their receptors, leucine-rich repeat-containing G-protein-coupled receptor (Lgr) 4-6, act as activators of Wnt signaling. Although Rspo expression in the hem during the early stages of cortical development has been reported, comparative expression analysis of Rspos and Lgr4-6 has not been performed. In this study, we examined the detailed spatiotemporal expression patterns of Rspo1-4 and Lgr4-6 in the embryonic and postnatal telencephalon to elucidate their functions. In the embryonic day (E) 10.5-14.5 telencephalon, Rspo1-3 were prominently expressed in the cortical hem. Among their receptors, Lgr4 was observed in the ventral telencephalon, and Lgr6 was highly expressed throughout the telencephalon at the same stages. This suggests that Rspo1-3 and Lgr4 initially regulate telencephalic development in restricted regions, whereas Lgr6 functions broadly. From the late embryonic stage, the expression areas of Rspo1-3 and Lgr4-6 dramatically expanded; their expression was found in the neocortex and limbic system, such as the hippocampus, amygdala, and striatum. Increased Rspo and Lgr expression from the late embryonic stages suggests broad roles of Rspo signaling in telencephalic development. Furthermore, the Lgr+ regions were located far from the Rspo+ regions, especially in the E10.5-14.5 ventral telencephalon, suggesting that Lgrs act via a Rspo-independent pathway.
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Affiliation(s)
- Keisuke Watanabe
- Division of Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.
| | - Masao Horie
- Department of Nursing, Niigata College of Nursing, Jōetsu, Japan
| | - Manabu Hayatsu
- Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yoshikazu Mikami
- Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Noboru Sato
- Division of Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
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Plotkin LI, Sanz N, Brun LR. Messages from the Mineral: How Bone Cells Communicate with Other Tissues. Calcif Tissue Int 2023; 113:39-47. [PMID: 37171619 PMCID: PMC10330496 DOI: 10.1007/s00223-023-01091-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/01/2023] [Indexed: 05/13/2023]
Abstract
Bone is a highly dynamic tissue, and the constant actions of bone-forming and bone-resorbing cells are responsible for attaining peak bone mass, maintaining bone mass in the adults, and the subsequent bone loss with aging and menopause, as well as skeletal complications of diseases and drug side-effects. It is now accepted that the generation and activity of bone-forming osteoblasts and bone-resorbing osteoclasts is modulated by osteocytes, osteoblast-derived cells embedded in the bone matrix. The interaction among bone cells occurs through direct contact and via secreted molecules. In addition to the regulation of bone cell function, molecules released by these cells are also able to reach the circulation and have effects in other tissues and organs in healthy individuals. Moreover, bone cell products have also been associated with the establishment or progression of diseases, including cancer and muscle weakness. In this review, we will discuss the role of bone as an endocrine organ, and the effect of selected, osteoblast-, osteocyte-, and osteoclast-secreted molecules on other tissues.
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Affiliation(s)
- Lilian I Plotkin
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Roudebush Veterans Administration Medical Center; and Indiana Center for Musculoskeletal Health, Indianapolis, IN, 46202, USA.
| | - Natasha Sanz
- Bone Biology Laboratory. School of Medicine, Rosario National University, Rosario, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rosario Santa Fe, Argentina
| | - Lucas R Brun
- Bone Biology Laboratory. School of Medicine, Rosario National University, Rosario, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rosario Santa Fe, Argentina
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Aguilar A, Gifre L, Ureña-Torres P, Carrillo-López N, Rodriguez-García M, Massó E, da Silva I, López-Báez V, Sánchez-Bayá M, Prior-Español Á, Urrutia M, Paul J, Bustos MC, Vila A, Garnica-León I, Navarro-González JF, Mateo L, Bover J. Pathophysiology of bone disease in chronic kidney disease: from basics to renal osteodystrophy and osteoporosis. Front Physiol 2023; 14:1177829. [PMID: 37342799 PMCID: PMC10277623 DOI: 10.3389/fphys.2023.1177829] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/23/2023] [Indexed: 06/23/2023] Open
Abstract
Chronic kidney disease (CKD) is a highly prevalent disease that has become a public health problem. Progression of CKD is associated with serious complications, including the systemic CKD-mineral and bone disorder (CKD-MBD). Laboratory, bone and vascular abnormalities define this condition, and all have been independently related to cardiovascular disease and high mortality rates. The "old" cross-talk between kidney and bone (classically known as "renal osteodystrophies") has been recently expanded to the cardiovascular system, emphasizing the importance of the bone component of CKD-MBD. Moreover, a recently recognized higher susceptibility of patients with CKD to falls and bone fractures led to important paradigm changes in the new CKD-MBD guidelines. Evaluation of bone mineral density and the diagnosis of "osteoporosis" emerges in nephrology as a new possibility "if results will impact clinical decisions". Obviously, it is still reasonable to perform a bone biopsy if knowledge of the type of renal osteodystrophy will be clinically useful (low versus high turnover-bone disease). However, it is now considered that the inability to perform a bone biopsy may not justify withholding antiresorptive therapies to patients with high risk of fracture. This view adds to the effects of parathyroid hormone in CKD patients and the classical treatment of secondary hyperparathyroidism. The availability of new antiosteoporotic treatments bring the opportunity to come back to the basics, and the knowledge of new pathophysiological pathways [OPG/RANKL (LGR4); Wnt-ß-catenin pathway], also affected in CKD, offers great opportunities to further unravel the complex physiopathology of CKD-MBD and to improve outcomes.
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Affiliation(s)
- Armando Aguilar
- Autonomous University of Chiapas, Tuxtla Gutiérrez, Mexico
- Department of Nephrology, Mexican Social Security, IMSS General Hospital of Zone No 2, Tuxtla Gutiérrez, Mexico
| | - Laia Gifre
- Department of Rheumatology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Catalonia, Spain
| | - Pablo Ureña-Torres
- AURA Saint Ouen, Department of Nephrology and Dialysis and Department of Renal Physiology, Necker Hospital, University of Paris Descartes, Paris, France
| | - Natalia Carrillo-López
- Bone and Mineral Research Unit, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Minerva Rodriguez-García
- Nephrology Clinical Management Unit, Central University Hospital of Asturias (HUCA), Oviedo, Asturias, Spain
| | - Elisabeth Massó
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Iara da Silva
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Víctor López-Báez
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Maya Sánchez-Bayá
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Águeda Prior-Español
- Department of Rheumatology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Catalonia, Spain
| | - Marina Urrutia
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Javier Paul
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Misael C. Bustos
- Department of Nephrology, Pontificia Catholic University of Chile, Santiago, Chile
| | - Anna Vila
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
| | - Isa Garnica-León
- Department of Nephrology, Mexican Social Security, IMSS General Hospital of Zone No 2, Tuxtla Gutiérrez, Mexico
| | - Juan F. Navarro-González
- Research Unit and Nephrology Service, University Hospital of Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Islas Canarias, Spain
- Instituto de Tecnologías Biomédicas, Universidad de la Laguna, Islas Canarias, Spain
| | - Lourdes Mateo
- Department of Rheumatology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Catalonia, Spain
| | - Jordi Bover
- Department of Nephrology, University Hospital Germans Trias i Pujol (HGiTP), Badalona (Barcelona), Catalonia, Spain
- REMAR-IGTP Group, Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona (Barcelona), Catalonia, Spain
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Yang Loureiro Z, Joyce S, DeSouza T, Solivan-Rivera J, Desai A, Skritakis P, Yang Q, Ziegler R, Zhong D, Nguyen TT, MacDougald OA, Corvera S. Wnt signaling preserves progenitor cell multipotency during adipose tissue development. Nat Metab 2023; 5:1014-1028. [PMID: 37337125 PMCID: PMC10290956 DOI: 10.1038/s42255-023-00813-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 04/25/2023] [Indexed: 06/21/2023]
Abstract
Mesenchymal stem/progenitor cells are essential for tissue development and repair throughout life, but how they are maintained under chronic differentiation pressure is not known. Using single-cell transcriptomics of human progenitor cells we find that adipose differentiation stimuli elicit two cellular trajectories: one toward mature adipocytes and another toward a pool of non-differentiated cells that maintain progenitor characteristics. These cells are induced by transient Wnt pathway activation and express numerous extracellular matrix genes and are therefore named structural Wnt-regulated adipose tissue cells. We find that the genetic signature of structural Wnt-regulated adipose tissue cells is present in adult human adipose tissue and adipose tissue developed from human progenitor cells in mice. Our results suggest a mechanism whereby adipose differentiation occurs concurrently with the maintenance of a mesenchymal progenitor cell pool, ensuring tissue development, repair and appropriate metabolic control over the lifetime.
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Affiliation(s)
- Zinger Yang Loureiro
- Morningside Graduate School of Biomedical Sciences, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Shannon Joyce
- Morningside Graduate School of Biomedical Sciences, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Tiffany DeSouza
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Javier Solivan-Rivera
- Morningside Graduate School of Biomedical Sciences, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Anand Desai
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Pantos Skritakis
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Qin Yang
- Morningside Graduate School of Biomedical Sciences, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Rachel Ziegler
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Denise Zhong
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Tammy T Nguyen
- Division of Vascular Surgery, Department of Surgery, UMass Memorial Medical Center, Worcester, MA, USA
- Diabetes Center of Excellence, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Ormond A MacDougald
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
- Division of Metabolism, Endocrinology, and Diabetes, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Silvia Corvera
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA.
- Diabetes Center of Excellence, University of Massachusetts Chan Medical School, Worcester, MA, USA.
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9
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He Y, Wu N. Alternative Polyadenylation Results in mRNA Transcript Instability in Gestational Diabetes Mellitus. Diabetes Metab Syndr Obes 2023; 16:619-628. [PMID: 36915397 PMCID: PMC10008025 DOI: 10.2147/dmso.s400283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023] Open
Abstract
OBJECTIVE To study the characteristics of selective polyadenylation (APA) in gestational diabetes mellitus (GDM) by poly(A) site sequencing and to explore the role of APA process in the pathogenesis of GDM. METHODS Three pregnant women diagnosed as GDM in our hospital were randomly selected as the GDM group, and three healthy pregnant women at the same time as the control group. The placental tissues of two groups of pregnant women after delivery were collected for high-throughput transcriptome sequencing (RNA-seq) and poly(A) site sequencing (PAS-seq) to screen differentially expressed genes and variable 3'UTR genes in GDM. Gene Ontology (GO) analysis and pathway analysis were used to analyze the functional classification and pathway of differential genes, and preliminarily explore the susceptible genes in GDM. RESULTS Compared with the control group, there were 202 TTS loci in the GDM group, including 103 genes with shortened TTS loci and 99 genes with delayed TTS loci. There were 57 genes with significant difference in TTS (P<0.05). Subsequently, we found that VCPIP1 and LGR4 were differentially expressed in RNA-seq. The genes in advance of TTS locus were enriched in biological processes such as cell development, protein transport and phosphorylation, signal transduction, etc. Delayed TTS genes are enriched in biological processes such as transcriptional regulation, cell migration and cycle, DNA repair and damage. CONCLUSION The abnormality of APA process may be involved in the occurrence and development of GDM. The genes with significantly different changes in TTS locus may become biomarkers or predictors for GDM to assess the incidence, disease progression and disease severity, and may also become potential targets for GDM treatment.
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Affiliation(s)
- Yujing He
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Na Wu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, People’s Republic of China
- Department of Medical Service Quality, Shengjing Hospital of China Medical University, Shenyang, People’s Republic of China
- Correspondence: Na Wu, Email
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Zheng L, Duan SL, Wen XL, Dai YC. Molecular regulation after mucosal injury and regeneration in ulcerative colitis. Front Mol Biosci 2022; 9:996057. [PMID: 36310594 PMCID: PMC9606627 DOI: 10.3389/fmolb.2022.996057] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/26/2022] [Indexed: 12/02/2022] Open
Abstract
Ulcerative colitis (UC) is a chronic nonspecific inflammatory disease with a complex etiology. Intestinal mucosal injury is an important pathological change in individuals with UC. Leucine-rich repeat-containing G protein-coupled receptor 5 (LGR5+) intestinal stem cells (ISCs) exhibit self-renewal and high differentiation potential and play important roles in the repair of intestinal mucosal injury. Moreover, LGR5+ ISCs are intricately regulated by both the Wnt/β-catenin and Notch signaling pathways, which jointly maintain the function of LGR5+ ISCs. Combination therapy targeting multiple signaling pathways and transplantation of LGR5+ ISCs may lead to the development of new clinical therapies for UC.
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Affiliation(s)
- Lie Zheng
- Department of Gastroenterology, Shaanxi Hospital of Traditional Chinese Medicine, Xi’an, Shaanxi Province, China
| | - Sheng-Lei Duan
- Department of Gastroenterology, Shaanxi Hospital of Traditional Chinese Medicine, Xi’an, Shaanxi Province, China
| | - Xin-Li Wen
- Department of Gastroenterology, Shaanxi Hospital of Traditional Chinese Medicine, Xi’an, Shaanxi Province, China
| | - Yan-Cheng Dai
- Department of Gastroenterology, Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Yan-Cheng Dai,
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