Single-Cell RNA Sequencing Reveals the Cellular and Molecular Characterization of Discoid Meniscus
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ABSTRACT:
PROVIDER: PRJEB90542 | ENA |
REPOSITORIES: ENA
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Project description:Discoid lateral meniscus (DLM) is more prone to injury than a normally shaped meniscus. Our previous study successfully identified the different cell types and their corresponding marker genes in meniscus tissues, but there was no study comparing the gene expression and cell heterogenicity of discoid meniscus with normal meniscus.
2023-12-06 | GSE162767 | GEO
Project description:Single cell-seq identify discoid lateral meniscus
| PRJNA682995 | ENA
Project description:Cellular and molecular characterization of renal cell carcinoma
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Project description:Cellular and molecular characterization of renal cell carcinoma
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Project description:The discoid meniscus is a congenital abnormality, with the vast majority occurring in the lateral meniscus. More commonly seen in pediatric populations, patients present with acute or chronic knee symptoms such as joint line pain, audible or palpable mechanical symptoms, and the inability to achieve terminal extension. The classic discoid classification system by Watanabe excludes anterior and horizontal instability and tearing that commonly occur with this pathology. A comprehensive classification, the Pediatric Research in Sports Medicine (PRiSM) Discoid Meniscus Classification, was developed to include these characteristics. To complement this classification system, we describe a complete arthroscopic examination of the discoid meniscus, assessing meniscal width, height, instability, and tearing. For thorough anterior assessment, the importance of medial portal viewing with lateral portal probing is highlighted. Assessment of the meniscus for tearing and instability should be performed before and after saucerization. Consistent use of a comprehensive classification system and a diagnostic arthroscopic exam will improve the understanding, treatment, and quality of research in the discoid meniscus.
| S-EPMC9353536 | biostudies-literature
Project description:Meniscus injuries are common and while surgical strategies have improved, there is a need for alternative therapeutics to improve long-term outcomes and prevent post-traumatic osteoarthritis. Current research efforts in regenerative therapies and tissue engineering are hindered by a lack of understanding of meniscus cell biology and a poorly defined meniscus cell phenotype. This study utilized bulk RNA-sequencing to identify unique and overlapping transcriptomic profiles in cartilage, inner and outer zone meniscus tissue, and passaged inner and outer zone meniscus cells. The greatest transcriptomic differences were identified when comparing meniscus tissue to monolayer cultured cells (> 4,600 differentially expressed genes (DEGs)) and meniscus tissue to cartilage (> 3,100 DEGs). While zonal differences exist within the meniscus tissue (205 DEGs between inner and outer zone meniscus tissue), meniscus resident cells are more similar to each other than to either cartilage or monolayer meniscus cells. Additionally, we identified and validated LUM and PRRX1 as potential markers for meniscus tissue and ACTA2, FSTL1, SFRP2, and TAGLN as novel markers for meniscus cell dedifferentiation. Our data contribute significantly to the current characterization of meniscus cells and provide an important foundation for future work in meniscus cell biology, regenerative medicine, and tissue engineering.
2024-11-10 | GSE275100 | GEO
Project description:Cellular senescence contributes to spontaneous repair of rat meniscus
| PRJNA1119526 | ENA
Project description:we conducted single-cell RNA sequencing (scRNA-seq) analysis using the 10x Chromium platform to uncover the cellular composition and molecular profiles of meniscal cells from different age groups.The meniscus, a fibrocartilaginous structure essential for joint load distribution, is highly susceptible to age-related degeneration. With aging, the meniscus experiences structural and functional deterioration, contributing to the progression of osteoarthritis(OA). This study aims to bridge this gap by profiling the cellular landscape and analyzing age-related changes in the aging meniscus using scRNA-seq.
2025-01-14 | GSE286034 | GEO
Project description:There is a need to clarify the role of the meniscus in knee OA which may be aided by the identification of biomarkers that reflect the molecular events involved in the tissue degradation. This is of particular importance in the early stages of the degenerative processes, a crucial phase when it might still be possible to interfere with disease progression before tearing and critical loss of meniscal function occurs. One way to achieve this goal is exploratory proteomics by mass spectrometry (MS), which has the potential to analyse the proteome of complex samples. Thus, our aim was to gain new knowledge about the molecular processes within the human meniscus by comparing the proteomic profiles of both the lateral and medial meniscus from healthy controls, subjects with mild signs of joint degeneration, and patients with end-stage knee OA, using a non-targeted MS approach operating in data-independent acquisition (DIA) mode. For the research purpose six groups were established: medial and lateral menisci from control donors (n=12), medial and lateral menisci from donors with mild signs of joint degeneration (n=13) and medial and lateral menisci from end-stage knee OA patients (n=12).
2024-04-03 | PXD042122 | Pride
Project description:Background: Meniscus tears are the most common injury in the knee and are associated with an increased risk of osteoarthritis (OA). The molecular profile of knees with meniscus tears is not well-studied. Therefore, to advance our understanding of the early response of the knee to injury, we compared the gene expression profile of meniscus and articular cartilage within the same knees following meniscus injury. Hypothesis/Purpose: To identify differences between the molecular signatures of meniscus and articular cartilage from knees with intact articular cartilage undergoing arthroscopic partial meniscectomy. Study Design: Descriptive laboratory study Methods: Patients (n=12) with a known isolated medial meniscus tear without any knee chondrosis or radiographic OA were consented prior to surgery. During arthroscopic partial meniscectomy, a sample of their injured meniscus and a sample of their articular cartilage off the medial femoral condyle were procured. The transcriptome signatures, as measured through Affymetrix microarray, were compared between the two tissues and underlying biological processes were explored computationally. Results: 3566 gene transcripts were differentially expressed between meniscus and articular cartilage. Gene transcripts down-regulated in articular cartilage were associated with extracellular matrix organization, wound healing, cell adhesion, and chemotaxis. Gene transcripts up-regulated in articular cartilage were associated with blood vessels morphogenesis and angiogenesis. Examples of individual genes with significant differences in expression between the two tissues include IBSP (23.76 fold; P < 0.001), upregulated in meniscus, and TREM1 (3.23 fold; P = 0.006), upregulated in meniscus. Conclusion: The meniscus and articular cartilage have distinct gene expression profiles in knees with meniscus tears and intact articular cartilage. Total RNA obtained from injured meniscus and normal articular cartilage from patients undergoing partial meniscectomy.
2015-03-06 | E-GEOD-66635 | biostudies-arrayexpress