Sex and gender differences in lupus - intersection between immunometabolism, epigenetic remodeling and cardiac involvement

狼疮的性别和性别差异——免疫代谢、表观遗传重塑和心脏受累之间的交叉

• 批准号: 10308290
• 负责人: Caroline Jefferies
• 金额: $ 57.95万
• 依托单位: CEDARS-SINAI MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-16 至 2025-07-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10308290
• 关键词: Address; Affect; Angiography; Antiviral Agents; Area; Autoimmune Diseases; Autoimmunity; Automobile Driving; CD14 gene; Cardiac; Cardiovascular Diseases; Cardiovascular system; Cause of Death; Cells; Cholecalciferol; Chromatin; Coenzymes; Coronary; Coronary Arteriosclerosis; Data; Development; Disease; Drug Targeting; Epigenetic Process; FCGR3B gene; Female; Flow Cytometry; Functional disorder; Gender; Gene Expression; Gene Expression Profile; Gene Expression Regulation; Genetic; Genetic Transcription; Glycolysis; Imaging Techniques; Immune response; Immunization; Immunologic Memory; Inflammatory; Interferon Type I; Interferon-alpha; Interferons; Investigation; Isocitrate Dehydrogenase; Link; Lupus; Magnetic Resonance Imaging; Metabolic; Metabolic Pathway; Metabolism; Methods; Microvascular Dysfunction; Mitochondrial Proteins; Organ; Outcome; Oxidative Phosphorylation; Pathology; Pathway interactions; Patients; Phenotype; Play; Prevalence; Production; Proteomics; Publishing; Regulator Genes; Relative Risks; Research; Rheumatoid Arthritis; Risk; Role; Severity of illness; Sex Bias; Sex Differences; Sun Exposure; Symptoms; Systemic Lupus Erythematosus; Testing; Time; Virus Diseases; Vitamin D; Woman; XCL1 gene; base; cardiovascular disorder risk; cardiovascular imaging; cytokine; disorder risk; extracellular; gender difference; heart imaging; high dimensionality; histone methylation; imaging approach; male; men; metabolomics; monocyte; next generation sequencing; oxidized low density lipoprotein; programs; response; sex; sexual dimorphism; single-cell RNA sequencing; systemic autoimmune disease

Lupus is predominantly a female disease, however men with lupus frequently have more severe symptoms and organ involvement including cardiovascular disease, a leading cause of death in lupus. Environmental and gender differences such as sunlight exposure and vitamin D levels have also been shown to play a role in lupus progression and cardiovascular disease. Differences in metabolic activity have also been suggested to contribute to sexually dimorphic immune responses and autoimmunity. Our recent data in female lupus combining cardiac imaging with metabolomic profiling has shown potential links between cardiac involvement and metabolic reprogramming of lupus monocytes. This proposal investigates the hypothesis that sex biases in metabolic activity of monocytes drives epigenetic reprogramming of monocytes, driving functional differences. Secondly, it will address how sexually dimorphic responses to vitamin D contribute to monocytic reprogramming. As epigenetic changes in monocytes is linked with cardiovascular disease (CVD), and given the prevalence of CVD in both male and female lupus, this proposal will address whether sex-specific changes in metabolic and genetic reprogramming drive phenotypic differences in lupus monocytes and ask how this relates to prevalence of CMD and CVD using state of the art cardiac imaging. Aim 1: Determine whether metabolic pathways differ in monocytes from male and female lupus patients. We will address how sexual dimorphism in immune responses and immunometabolism in monocytes integrate to affect outcome between male and female patients using metabolic, proteomic and flow cytometry approaches. Aim 2: Determine how genetic reprogramming drives sexually dimorphic monocytic function in lupus. Single cell next generation sequencing will be used to determine chromatin accessibility in monocyte subsets and ask how this influences gene expression programs and functional differences in male and female lupus. Aim 3: Assess relative risk of CVD in male lupus using non-invasive cardiac imaging techniques. Cardiac imaging will determine prevalence of CVD in male and female lupus and correlated with metabolic changes or gene expression patterns to determine sexually dimorphic responses that determine risk. Impact: Determining whether metabolic reprograming and epigenetic remodeling are sexually dimorphic in lupus monocytes will potentially impact treatment approaches as we enter an era where drugs targeting immunometabolism as being trialed in lupus.

狼疮主要是女性疾病，而男性狼疮往往有更严重的症状和 器官受累，包括心血管疾病，这是狼疮死亡的主要原因。环境和 性别差异，如阳光暴露和维生素D水平，也被证明在狼疮中起到了作用 进展和心血管疾病。新陈代谢活动的差异也被认为是原因之一。 与性二态免疫反应和自身免疫有关。女性狼疮合并心脏疾病的最新资料 代谢组学成像显示了心脏受累和代谢之间的潜在联系 狼疮单核细胞的重编程。这项建议调查了性别在新陈代谢中存在偏见的假设。 单核细胞的活性驱动单核细胞的表观遗传重新编程，从而驱动功能差异。其次，它 将解决对维生素D的性二态反应如何有助于单核细胞重新编程。AS 单核细胞的表观遗传学变化与心血管疾病(CVD)有关，鉴于心血管疾病的患病率 在男性和女性狼疮患者中，这项建议将解决代谢和遗传方面的性别特异性变化 重新编程导致狼疮单核细胞的表型差异，并询问这与CMD的患病率有何关系 以及使用最先进的心脏成像技术的心血管疾病。 目的1：确定男性和女性狼疮患者单核细胞的代谢途径是否不同。 我们将讨论免疫反应中的性别二型性如何与单核细胞的免疫代谢相结合。 利用代谢、蛋白质组学和流式细胞术的方法来影响男性和女性患者的预后。 目的2：确定基因重编程如何驱动狼疮患者的性二型单核细胞功能。 单细胞下一代测序将用于确定单核细胞亚群中染色质的可及性 并询问这对男性和女性狼疮的基因表达程序和功能差异有何影响。 目的3：应用无创性心脏成像技术评估男性狼疮患者发生心血管疾病的相对风险。 心脏成像将确定男性和女性狼疮的心血管疾病患病率，并与代谢相关 改变或基因表达模式，以确定决定风险的性二态反应。 影响：确定在狼疮中代谢重新编程和表观遗传重塑是否是性二态的 随着我们进入药物靶向的时代，单核细胞将潜在地影响治疗方法 在狼疮中试验的免疫新陈代谢。