Single-cell transcriptomic analysis reveals dynamic cellular processes in corneal epithelium during wound healing in cynomolgus monkeys
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ABSTRACT:
ORGANISM(S): Macaca fascicularis
PROVIDER: GSE276184 | GEO | 2024/09/20
REPOSITORIES: GEO
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Project description:Single-cell transcriptomic analysis reveals dynamic cellular processes in corneal epithelium during wound healing in cynomolgus monkeys
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Project description:Stem cells (SCs) are traditionally viewed as rare, slow-cycling cells that follow deterministic rules dictating their self-renewal or differentiation. It was several decades ago, when limbal epithelial SCs (LSCs) that regenerate the corneal epithelium were among the first sporadic, quiescent SCs ever discovered. However, LSC dynamics, heterogeneity and genetic signature are largely unknown. Moreover, recent accumulating evidence strongly suggested that epithelial SCs are actually abundant, frequently dividing cells that display stochastic behavior. In this work, we combined single-cell RNA sequencing and advanced quantitative lineage tracing for in-depth analysis of the murine limbal epithelium. The generated data provides an atlas of cell states of the entire corneal epithelial lineage and reveales the co-existence of two novel LSC populations that reside in separate and well-defined sub-compartments. In the “outer” limbus, we discovered a primitive widespread population of quiescent LSCs (qLSCs) that uniformly express Krt15/Gpha2/Ifitm3/Cd63 proteins that serve as SC reservoire and in boundary formation. In the “inner” peri-corneal limbus, we identified prevalent active LSCs (aLSCs) that express Krt15-GFP/Atf3/Mt1-2/Socs3 and maintain homeostasis. We propose that these SC populations are abundant, follow stochastic rules and neutral drift dynamics. Notably, we provide evidence that T cells serve as niche cells for qLSCs, regulating quiescence and wound response. Taken together, we propose that divergent regenerative strategies are tailored to properly support tissue specific physiological constraints.
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Project description:Cynomolgus monkeys are well-established translational models for biomedical research and drug testing. To evaluate organ transcriptomes and gene expression variability in Cynomolgus monkeys, we used Customized NimbleGen Microarrays (Design ID: 120419_Cynomolgus_v5_TH_exp_HX12) for genome-wide gene expression profiling on 5 different tissues (heart, kidney, liver, lung, spleen) from 21 Cynomolgus monkeys. Cynomolgus monkey samples were derived from breeding centers located in the Philippines (3 females and 3 males), in Vietnam (2 females and 2 males), in China for animals from Mainland Southeast Asia (3 females), or in Mauritius (4 females and 4 males). Furthermore, genome-wide copy number variation was analyzed in tissue samples from the same animals using a custom NimbleGen 4.2 million probes comparative genomic hybridization (CGH) array to associate CNV genotypes with expression changes of proximal genes.
2016-02-24 | GSE76560 | GEO
Project description:Cynomolgus monkeys are well-established translational models for biomedical research and drug testing. Cynomolgus monkeys are outbred species and exhibit substantial levels of genetic variation which can affect the outcome and interpretation of biomedical studies. Copy number variations (CNVs) are a significant source of genetic diversity and a comprehensive understanding of the genomic impact of CNVs on phenotypic traits is limited. A custom 4.2 million probes comparative genomic hybridization (CGH) array (Design-ID: 120405_Cynomolgus5_CGH_UX1) has been designed on the basis of the Cynomolgus monkey genome (Ebeling et al. (2011) Genome Research; PMID: 21862625) to assess genome-wide copy number variation among Cynomolgus monkeys. Using Cynomolgus monkey specific NimbleGen CGH Microarrays we profiled the genomes of 21 Cynomolgus monkeys. Germline DNA from 21 Cynomolgus monkeys with different origin was tested against a Cynomolgus monkey reference. Cynomolus monkey samples were derived from breeding centers located in the Philippines (3 females and 3 males), in Vietnam (2 males and 2 females), in China for animals from Mainland Southeast Asia (3 females), or in Mauritius (4 females and 4 males). Furthermore genome-wide expression profiles were analyzed in 5 vitally important tissue samples (heart, kidney, liver, lung, spleen) from the same animals using a custom Cynomolgus monkey specific NimbleGen gene expression microarray (design ID: 120419_Cynomolgus_v5_TH_exp_HX12) to associate CNV genotypes with expression changes of proximal genes using a cis expression quantitative trait loci (cis-eQTL) mapping approach. Expression data have been deposited at the NCBI Gene Expression Omnibus (GEO) under accession numbers GSE76560. The array CGH results analyzed in this study are further described in Gschwind A.R. et al. (2016) "Diversity and regulatory impact of copy number variation in the primate Macaca fascicularis". under submission
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Project description:EXPERIMENT: The animal experiments were performed at Shin Nippon Biomedical Laboratories (SNBL), Ltd. (Kagoshima, Japan) in compliance with the Guideline for Animal Experimentation (1987), and in accordance with the Law Concerning the Protection and Control of Animals (1973) and the Standards Relating to the Care and Management of Experimental Animals (1980). This study was approved by the Institutional Animal Care and Use Committee of SNBL and performed in accordance with the ethics criteria contained in the bylaws of the SNBL committee. Each female monkey was paired with a male of proven fertility for one day between day 11 and day 15 of the menstrual cycle. Pregnant females, aged 5-8 years and weighing 2.84-3.76 kg on day 22 of gestation, were allocated randomly to two groups, each with three monkeys, and housed individually. The monkeys were orally dosed with (±)-thalidomide (Lot no. SDH7273/SDJ3347, Wako Pure Chemical Industries, Ltd., Osaka, Japan) at 0 or 20 mg/kg by oral intubation on day 26 of gestation, which was during the critical period for thalidomide-induced teratogenesis [Delahunt and Lassen, 1964; Hendrickx, 1973]. Dosage was adjusted to the body weight on day 22 of gestation and the drug was packed in a gelatin capsule. Control monkeys received the capsule only. ANIMAL MODEL: Macaca fascicularis INTERVAL: NON. PLATFORM: Proprietary Affymetrix NHP GeneChip® Array for Cynomolgus genome derived from Biogen Idec Keywords = Developmental Keywords = Monkeys Keywords = Thalidomide TFetal malformations and early embryonic gene expression response in cynomolgus monkeys maternally exposed to thalidomidechannel oligonucleotide (Affymetrix) platform.
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