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Liu Y, Zhao J, Adams TS, Wang N, Schupp JC, Wu W, McDonough JE, Chupp GL, Kaminski N, Wang Z, Yan X. iDESC: identifying differential expression in single-cell RNA sequencing data with multiple subjects. BMC Bioinformatics 2023; 24:318. [PMID: 37608264 PMCID: PMC10463720 DOI: 10.1186/s12859-023-05432-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 07/18/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND Single-cell RNA sequencing (scRNA-seq) technology has enabled assessment of transcriptome-wide changes at single-cell resolution. Due to the heterogeneity in environmental exposure and genetic background across subjects, subject effect contributes to the major source of variation in scRNA-seq data with multiple subjects, which severely confounds cell type specific differential expression (DE) analysis. Moreover, dropout events are prevalent in scRNA-seq data, leading to excessive number of zeroes in the data, which further aggravates the challenge in DE analysis. RESULTS We developed iDESC to detect cell type specific DE genes between two groups of subjects in scRNA-seq data. iDESC uses a zero-inflated negative binomial mixed model to consider both subject effect and dropouts. The prevalence of dropout events (dropout rate) was demonstrated to be dependent on gene expression level, which is modeled by pooling information across genes. Subject effect is modeled as a random effect in the log-mean of the negative binomial component. We evaluated and compared the performance of iDESC with eleven existing DE analysis methods. Using simulated data, we demonstrated that iDESC had well-controlled type I error and higher power compared to the existing methods. Applications of those methods with well-controlled type I error to three real scRNA-seq datasets from the same tissue and disease showed that the results of iDESC achieved the best consistency between datasets and the best disease relevance. CONCLUSIONS iDESC was able to achieve more accurate and robust DE analysis results by separating subject effect from disease effect with consideration of dropouts to identify DE genes, suggesting the importance of considering subject effect and dropouts in the DE analysis of scRNA-seq data with multiple subjects.
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Affiliation(s)
- Yunqing Liu
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06520, USA
| | - Jiayi Zhao
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06520, USA
| | - Taylor S Adams
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Ningya Wang
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06520, USA
| | - Jonas C Schupp
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, 06520, USA
- Department of Respiratory Medicine, Hannover Medical School and Biomedical Research in End-Stage and Obstructive Lung Disease Hannover, German Center for Lung Research (DZL), Hannover, Germany
| | - Weimiao Wu
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06520, USA
- Meta Platforms, Inc, Cambridge, USA
| | - John E McDonough
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Geoffrey L Chupp
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Zuoheng Wang
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06520, USA.
| | - Xiting Yan
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06520, USA.
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, 06520, USA.
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Hégarat N, Novopashina D, Fokina AA, Boutorine AS, Venyaminova AG, Praseuth D, François JC. Monitoring DNA triplex formation using multicolor fluorescence and application to insulin-like growth factor I promoter downregulation. FEBS J 2014; 281:1417-1431. [DOI: 10.1111/febs.12714] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 12/30/2013] [Accepted: 01/08/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Nadia Hégarat
- Acides nucléiques: dynamique, ciblage et fonctions biologiques; INSERM U565; Paris France
- Département Régulations, développement et diversité moléculaire; MNHN - CNRS UMR7196; Paris France
| | - Darya Novopashina
- Laboratory of RNA Chemistry; Institute of Chemical Biology and Fundamental Medicine; Siberian Division of Russian Academy of Sciences; Novosibirsk Russia
| | - Alesya A. Fokina
- Laboratory of RNA Chemistry; Institute of Chemical Biology and Fundamental Medicine; Siberian Division of Russian Academy of Sciences; Novosibirsk Russia
| | - Alexandre S. Boutorine
- Acides nucléiques: dynamique, ciblage et fonctions biologiques; INSERM U565; Paris France
- Département Régulations, développement et diversité moléculaire; MNHN - CNRS UMR7196; Paris France
| | - Alya G. Venyaminova
- Laboratory of RNA Chemistry; Institute of Chemical Biology and Fundamental Medicine; Siberian Division of Russian Academy of Sciences; Novosibirsk Russia
| | - Danièle Praseuth
- Acides nucléiques: dynamique, ciblage et fonctions biologiques; INSERM U565; Paris France
- Département Régulations, développement et diversité moléculaire; MNHN - CNRS UMR7196; Paris France
| | - Jean-Christophe François
- Acides nucléiques: dynamique, ciblage et fonctions biologiques; INSERM U565; Paris France
- Département Régulations, développement et diversité moléculaire; MNHN - CNRS UMR7196; Paris France
- Sorbonne Universités; UPMC Univ Paris 06; UMR_S 938; CDR Saint Antoine; Paris France
- Faculté de Médecine and Hôpital Saint Antoine; INSERM; UMR_S 938; CDR Saint Antoine; Paris France
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Gow DJ, Sester DP, Hume DA. CSF-1, IGF-1, and the control of postnatal growth and development. J Leukoc Biol 2010; 88:475-81. [DOI: 10.1189/jlb.0310158] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Honsho S, Nishikawa S, Amano K, Zen K, Adachi Y, Kishita E, Matsui A, Katsume A, Yamaguchi S, Nishikawa K, Isoda K, Riches DWH, Matoba S, Okigaki M, Matsubara H. Pressure-mediated hypertrophy and mechanical stretch induces IL-1 release and subsequent IGF-1 generation to maintain compensative hypertrophy by affecting Akt and JNK pathways. Circ Res 2009; 105:1149-58. [PMID: 19834007 DOI: 10.1161/circresaha.109.208199] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE It has been reported that interleukin (IL)-1 is associated with pathological cardiac remodeling and LV dilatation, whereas IL-1beta has also been shown to induce cardiomyocyte hypertrophy. Thus, the role of IL-1 in the heart remains to be determined. OBJECTIVE We studied the role of hypertrophy signal-mediated IL-1beta/insulin-like growth factor (IGF)-1 production in regulating the progression from compensative pressure-mediated hypertrophy to heart failure. METHODS AND RESULTS Pressure overload was performed by aortic banding in IL-1beta-deficient mice. Primarily cultured cardiac fibroblasts (CFs) and cardiac myocytes (CMs) were exposed to cyclic stretch. Heart weight, myocyte size, and left ventricular ejection fraction were significantly lower in IL-1beta-deficient mice (20%, 23% and 27%, respectively) than in the wild type 30 days after aortic banding, whereas interstitial fibrosis was markedly augmented. DNA microarray analysis revealed that IGF-1 mRNA level was markedly (approximately 50%) decreased in the IL-1beta-deficient hypertrophied heart. Stretch of CFs, rather than CMs, abundantly induced the generation of IL-1beta and IGF-1, whereas such IGF-1 induction was markedly decreased in IL-1beta-deficient CFs. IL-1beta released by stretch is at a low level unable to induce IL-6 but sufficient to stimulate IGF-1 production. Promoter analysis showed that stretch-mediated IL-1beta activates JAK/STAT to transcriptionally regulate the IGF-1 gene. IL-1beta deficiency markedly increased c-Jun N-terminal kinase (JNK) and caspase-3 activities and enhanced myocyte apoptosis and fibrosis, whereas replacement of IGF-1 or JNK inhibitor restored them. CONCLUSIONS We demonstrate for the first time that pressure-mediated hypertrophy and mechanical stretch generates a subinflammatory low level of IL-1beta, which constitutively causes IGF-1 production to maintain adaptable compensation hypertrophy and inhibit interstitial fibrosis.
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Affiliation(s)
- Shoken Honsho
- Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, 602-8566 Japan
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Telgmann R, Dördelmann C, Brand E, Nicaud V, Hagedorn C, Pavenstädt H, Cambien F, Tiret L, Paul M, Brand‐Herrmann S. Molecular genetic analysis of a human insulin‐like growth factor 1 promoter P1 variation. FASEB J 2008; 23:1303-13. [DOI: 10.1096/fj.08-116863] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ralph Telgmann
- Department of Molecular Genetics of Cardiovascular DiseaseLeibniz‐Institute for Arteriosclerosis ResearchUniversity of MünsterMünsterGermany
| | - Corinna Dördelmann
- Department of Molecular Genetics of Cardiovascular DiseaseLeibniz‐Institute for Arteriosclerosis ResearchUniversity of MünsterMünsterGermany
| | - Eva Brand
- University Hospital MünsterInternal Medicine and Nephrology DMünsterGermany
| | | | - Claudia Hagedorn
- Department of Molecular Genetics of Cardiovascular DiseaseLeibniz‐Institute for Arteriosclerosis ResearchUniversity of MünsterMünsterGermany
| | - Hermann Pavenstädt
- University Hospital MünsterInternal Medicine and Nephrology DMünsterGermany
| | | | | | - Martin Paul
- Faculty of Health Medicine and Life ScienceMaastricht UniversityMaastrichtThe Netherlands
| | - Stefan‐Martin Brand‐Herrmann
- Department of Molecular Genetics of Cardiovascular DiseaseLeibniz‐Institute for Arteriosclerosis ResearchUniversity of MünsterMünsterGermany
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Miccadei S, Pascucci B, Picardo M, Natali PG, Civitareale D. Identification of the minimal melanocyte-specific promoter in the melanocortin receptor 1 gene. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2008; 27:71. [PMID: 19017395 PMCID: PMC2627824 DOI: 10.1186/1756-9966-27-71] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Accepted: 11/18/2008] [Indexed: 12/04/2022]
Abstract
Background The understanding of cutaneous pigmentation biology is relevant from the biologic and clinical point of view. The binding of α-melanocortin and its specific receptor, on the plasma membrane of melanin synthesising cells, plays a crucial role in melanins biosynthesis. Furthermore, loss of MC1R function is associated with an increased incidence of melanoma and non-melanoma skin cancer. The expression of the α-melanocortin receptor gene is highly controlled but, at the present, region responsible for tissue-specific activity of the gene promoter has not been identified. Methods We have cloned the genomic sequences upstream the human MC1R coding gene. A DNA fragment of 5 kilobases upstream the human MC1R encoding sequence was placed in front of a reporter gene and several deletion mutants of such fragment have been prepared. These constructs have been tested for the ability to drive the melanocyte-specific gene expression of the reporter gene using transfection experiments in melanocyte and non-melanocyte cell lines. From these experiments we identified a DNA fragment with the ability to drive the gene transcription in a tissue-specific way and we used this small DNA fragment in DNA-protein interaction assays. Results We show that the 150 base pairs upstream the MC1R gene initiation codon are able to drive the melanocyte-specific gene transcription. Furthermore, we provide experimental evidences suggesting that on such minimal melanocyte-specific gene promoter can assemble tissue-specific complexes. Conclusion The present results strongly imply that the transcriptional regulation of the melanocyte-specific MC1R gene requires an internal promoter located in the 150 base pairs upstream the initiation codon.
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Affiliation(s)
- Stefania Miccadei
- Laboratory of Molecular Pathology and Ultrastructure, Regina Elena Cancer Institute, Rome, Italy.
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Cironi L, Riggi N, Provero P, Wolf N, Suvà ML, Suvà D, Kindler V, Stamenkovic I. IGF1 is a common target gene of Ewing's sarcoma fusion proteins in mesenchymal progenitor cells. PLoS One 2008; 3:e2634. [PMID: 18648544 PMCID: PMC2481291 DOI: 10.1371/journal.pone.0002634] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Accepted: 06/04/2008] [Indexed: 11/18/2022] Open
Abstract
Background The EWS-FLI-1 fusion protein is associated with 85–90% of Ewing's sarcoma family tumors (ESFT), the remaining 10–15% of cases expressing chimeric genes encoding EWS or FUS fused to one of several ets transcription factor family members, including ERG-1, FEV, ETV1 and ETV6. ESFT are dependent on insulin-like growth factor-1 (IGF-1) for growth and survival and recent evidence suggests that mesenchymal progenitor/stem cells constitute a candidate ESFT origin. Methodology/Principal Findings To address the functional relatedness between ESFT-associated fusion proteins, we compared mouse progenitor cell (MPC) permissiveness for EWS-FLI-1, EWS-ERG and FUS-ERG expression and assessed the corresponding expression profile changes. Whereas all MPC isolates tested could stably express EWS-FLI-1, only some sustained stable EWS-ERG expression and none could express FUS-ERG for more than 3–5 days. Only 14% and 4% of the total number of genes that were respectively induced and repressed in MPCs by the three fusion proteins were shared. However, all three fusion proteins, but neither FLI-1 nor ERG-1 alone, activated the IGF1 promoter and induced IGF1 expression. Conclusion/Significance Whereas expression of different ESFT-associated fusion proteins may require distinct cellular microenvironments and induce transcriptome changes of limited similarity, IGF1 induction may provide one common mechanism for their implication in ESFT pathogenesis.
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Affiliation(s)
- Luisa Cironi
- Division of Experimental Pathology, Institute of Pathology CHUV, University of Lausanne, Lausanne, Switzerland
| | - Nicolò Riggi
- Division of Experimental Pathology, Institute of Pathology CHUV, University of Lausanne, Lausanne, Switzerland
| | - Paolo Provero
- Department of Biology Genetics and Biochemistry, University of Turin, Turin, Italy
| | - Natalie Wolf
- Division of Experimental Pathology, Institute of Pathology CHUV, University of Lausanne, Lausanne, Switzerland
| | - Mario-Luca Suvà
- Division of Experimental Pathology, Institute of Pathology CHUV, University of Lausanne, Lausanne, Switzerland
| | - Domizio Suvà
- Department of Orthopedics, University Hospital, University of Geneva, Geneva, Switzerland
| | - Vincent Kindler
- Department of Orthopedics, University Hospital, University of Geneva, Geneva, Switzerland
| | - Ivan Stamenkovic
- Division of Experimental Pathology, Institute of Pathology CHUV, University of Lausanne, Lausanne, Switzerland
- * E-mail:
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Sukhanov S, Higashi Y, Shai SY, Vaughn C, Mohler J, Li Y, Song YH, Titterington J, Delafontaine P. IGF-1 reduces inflammatory responses, suppresses oxidative stress, and decreases atherosclerosis progression in ApoE-deficient mice. Arterioscler Thromb Vasc Biol 2007; 27:2684-90. [PMID: 17916769 DOI: 10.1161/atvbaha.107.156257] [Citation(s) in RCA: 200] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Whereas growth factors, via their ability to stimulate vascular smooth muscle cell (VSMC) proliferation and migration, have been thought to play a permissive role in atherosclerosis initiation and progression, the role of insulin-like growth factor-1 (IGF-1) is unknown. Here we report for the first time that IGF-1 infusion decreased atherosclerotic plaque progression in ApoE-deficient mice on a Western diet. METHODS AND RESULTS ApoE-null mice (8 weeks) were infused with vehicle or recombinant human IGF-1 and fed a high-fat diet for 12 weeks. Analysis of aortic sinuses revealed that IGF-1 infusion decreased atherosclerotic plaque progression and macrophage infiltration into lesions. Furthermore, IGF-1 decreased vascular expression of the proinflammatory cytokines interleukin-6 and tumor necrosis factor-alpha, reduced aortic superoxide formation and urinary 8-isoprostane levels, and increased aortic pAkt and eNOS expression and circulating endothelial progenitor cells, consistent with an antiinflammatory, antioxidant, and prorepair effect on the vasculature. CONCLUSIONS Our data indicate that an increase in circulating IGF-1 reduces vascular inflammatory responses, systemic and vascular oxidant stress and decreases atherosclerotic plaque progression. These findings have major implications for the treatment of atherosclerosis.
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Affiliation(s)
- Sergiy Sukhanov
- Cardiology Section, Department of Medicine, Tulane University School of Medicine, 1430 Tulane Ave, SL-48, New Orleans, LA 70112, USA
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