FLS Stimulation and Transcriptomic Analysis

Exploratory Score: 0.950 Price: $0.50 rheumatoid arthritis human RA fibroblast-like synoviocytes Status: proposed

What This Experiment Tests

Exploratory experiment designed to discover new patterns targeting N/A in human RA fibroblast-like synoviocytes. Primary outcome: upregulation of pro-inflammatory genes and cytokine secretion by carH3 and carH3-immune complexes

Description

Rheumatoid arthritis fibroblast-like synoviocytes (FLS) were stimulated with carbamylated histone H3 (carH3) or carH3-IgG immune complexes and analyzed by RNA sequencing and ELISA. This comprehensive experiment examined how carbamylated autoantigens and their immune complexes affect synovial fibroblast gene expression and inflammatory mediator production. FLS cells were treated with carH3 alone or carH3 pre-complexed with anti-CarP antibodies, followed by RNA extraction and sequencing to profile global gene expression changes. Additionally, culture supernatants were analyzed by ELISA for specific cytokines including IL-6, IL-8, MCP-1, and GM-CSF. Transcriptomic analysis revealed enrichment of immune activation, chemotaxis, and angiogenesis pathways.

TARGET GENE
N/A
MODEL SYSTEM
human RA fibroblast-like synoviocytes
ESTIMATED COST
$0
TIMELINE
0 months
PATHWAY
immune activation, chemotaxis, angiogenesis, inflammatory cytokine production
SOURCE
extracted_from_pmid_41930627
PRIMARY OUTCOME
upregulation of pro-inflammatory genes and cytokine secretion by carH3 and carH3-immune complexes

Scoring Dimensions

Info Gain 0.00 (25%) Feasibility 0.00 (20%) Hyp Coverage 0.00 (20%) Cost Effect. 0.00 (15%) Novelty 0.00 (10%) Ethical Safety 0.00 (10%) 0.950 composite

📖 Wiki Pages

CSF Biomarker Comparison Across Neurodegenerative biomarkerCSF Neurofilament Light Chain (NfL) in NeurodegenebiomarkerCSF O-GlcNAc — Target Engagement Biomarker for OGAbiomarkercsf-pta181biomarkerCSF Synaptic Biomarker Panel for NeurodegenerativebiomarkerCSF and Blood Biomarkers in Progressive SupranuclebiomarkerCSF Dynamic Biomarkers for Differential Diagnosis experimentCSF Dynamic Biomarkers for Differential Diagnosis experimentCSF Cytokine Profiles as Parkinson's Disease BiomagapRNA Binding Fox-1 Homolog 1 (RBFOX1)geneRNA Binding Fox-1 Homolog 2 (RBFOX2)geneRNA Binding Fox-3 Homolog (NeuN) (RBFOX3)geneRNA Therapeutics: Investment Landscape AnalysisinvestmentRNA Therapeutics for Neurodegeneration Investment investmentCSF Biomarkers for Corticobasal Syndrome and Progrbiomarker

Protocol

Phase 1: 细胞培养与准备工作(第1-3天)

材料与试剂:

  • 人RA成纤维样滑膜细胞(FLS),来自商业来源(Celprogen, Cat#: 3605-05或相当产品)
  • 完全培养基:DMEM/F-12 (Gibco, Cat#: 11320033) + 10% FBS (Gibco, Cat#: 16000044) + 1% 青霉素/链霉素 (Gibco, Cat#: 15140122)
  • 无酚红培养基(用于刺激实验):DMEM/F-12无酚红 (Gibco, Cat#: 11039021)
  • 0.25% 胰蛋白酶-EDTA (Gibco, Cat#: 25200056)
  • PBS, pH 7.4 (Gibco, Cat#: 10010023)
  • 细胞计数板 (Neubauer improved)
  • T75培养瓶 (Corning, Cat#: 430641U)
  • 6孔培养板 (Corning, Cat#: 3516)
  • 96孔培养板 (Corning, Cat#: 3599)
操作步骤:
  • 从液氮中取出RA FLS细胞,快速放入37°C水浴解冻
  • 转移细胞至T75培养瓶,加入10 mL预热完全培养基
  • 37°C、5% CO2条件下培养24小时
  • 弃旧培养基,PBS清洗2次,加入新鲜完全培养基
  • 每日观察细胞汇合度,细胞达80-90%汇合度时进行传代
  • 传代:弃培养基,PBS清洗,0.25%胰蛋白酶-EDTA消化3-5分钟
  • 中和胰蛋白酶,离心(300×g, 5分钟),重悬于完全培养基
  • 细胞计数,调整浓度至1×10^5 cells/mL
  • Phase 2: carH3和carH3-免疫复合物刺激实验(第4-5天)


    ...

    Expected Outcomes

  • IL-6分泌水平:carH3-免疫复合物高浓度组(10 μg/mL)在24小时时间点将比vehicle对照组增加8-12倍(预计范围:800-1500 pg/mL vs. 对照组80-120 pg/mL)
  • IL-8分泌水平:carH3-免疫复合物组IL-8分泌量预计为vehicle组的6-9倍(预计范围:600-900 pg/mL vs. 对照组80-120 pg/mL)
  • TNF-α分泌水平:carH3-免疫复合物处理后24小时,TNF-α分泌量预计增加5-8倍(预计范围:150-300 pg/mL vs. 对照组20-40 pg/mL)
  • MCP-1 (CCL2) 分泌水平:预计增加4-6倍(预计范围:400-600 pg/mL vs. 对照组80-120 pg/mL)
  • MMP-3分泌水平:carH3-免疫复合物组在24小时时间点预计增加10-15倍(预计范围:15-25 ng/mL vs. 对照组1-2 ng/mL)
  • 转录组测序差异表达基因数:预计carH3-免疫复合物组vs vehicle组将鉴定出200-400个显著差异表达基因(|log2FC| ≥ 1, padj < 0.05),其中约60-70%为上调基因
  • ...

    Success Criteria

    • 统计显著性:carH3-免疫复合物高浓度组与vehicle对照组相比,主要结局指标(IL-6、IL-8、TNF-α)分泌量差异p值 < 0.01(使用单因素方差分析ANOVA + Tukey post-hoc test)
    • 生物学效应阈值:carH3-免疫复合物组与carH3单体组相比,促炎细胞因子分泌量增加 ≥ 3倍,且差异具有统计学意义(p < 0.05)
    • 转录组质量:RNA样本RIN值 ≥ 8.0,每个样本测序深度 ≥ 30 million reads,Q30碱基比例 ≥ 85%
    • 差异表达基因富集:促炎相关通路(如TNF signaling pathway、NF-κB signaling pathway、IL-17 signaling pathway)在GSEA分析中显著富集,NOM p-value < 0.05,FDR < 0.25
    • Isotype对照验证:Isotype对照组与vehicle对照组之间无显著差异(p > 0.05),证明实验体系中无Fc受体非特异性激活

    -

    Related Hypotheses (0)

    No related hypotheses

    Debate History (0)

    No debates yet

    Experiment Results (0)

    No results recorded yet. Use POST /api/experiments/{id}/results to record a result.