Pathogenic and protective roles of strain-specific P. acnes hyaluronidases in acne

菌株特异性痤疮丙酸杆菌透明质酸酶在痤疮中的致病和保护作用

• 批准号: 10653696
• 负责人: George Y Liu
• 金额: $ 47.95万
• 依托单位: CEDARS-SINAI MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-07-18 至 2025-06-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10653696
• 关键词: Acne; Acne Vulgaris; Active Sites; Address; Adolescent; Affect; Animal Model; Anti-Inflammatory Agents; Binding; Cicatrix; Clinical; Collection; Data; Development; Disaccharides; Disease; Enzymes; Genes; Genome; Genomics; Health; Human; Hyaluronan; Hyaluronidase; Hydrolysis; Immune; Immune response; Immunologics; In Vitro; Inflammation; Inflammatory; Modeling; Molecular Conformation; Mus; Mutation; Pathogenesis; Pathogenicity; Pathologic; Pattern; Perception; Play; Property; Propionibacterium acnes; Publishing; Reporting; Research; Role; Sebum; Skin; Skin colonization; Structure; Structure-Activity Relationship; TLR2 gene; TNFSF10 gene; Testing; Therapeutic; Vaccines; base; biophysical techniques; cytokine; experimental study; human disease; immunopathology; improved; microbiome; mouse model; mutant; prevent; skin disorder

Abstract Acne is an important skin disorder believed to be caused by skin commensal P. acnes, although how P. acnes contributes to acne is unclear. We have identified two types of hyaluronidase enzymes, made by different strains of P. acnes, that are either pro- or anti-inflammatory. Importantly, skin colonization by P. acnes strains that encode the pro-inflammatory hyaluronidase is associated with development of acne, whereas colonization with P. acnes strains that express the anti-inflammatory hyaluronidase is associated with healthy skin. In preliminary experiments, we have shown that the pro- or anti-inflammatory property of the hyaluronidases is related to the size of hyaluronan fragments generated by the enzymes. Therefore, we hypothesize that hyaluronidases influence the acne-genic potential of P. acnes by degrading hyaluronan to different sizes. To address our hypothesis, 1) we propose to investigate the structural basis of hyaluronan degradation by P. acnes hyaluronidases, binding of hyaluronan fragments to TLR2/4 and host immune responses to the hyaluronan fragments. 2) We propose to determine the contribution of both hyaluronidases to acne by testing well characterized clinical strains of P. acnes and mutant strains of P. acnes that do not express hyaluronidase, in a new mouse acne model. 3) We will also investigate hyaluronidase-based strategies for preventing or treating acne.

摘要 痤疮是一种重要的皮肤病，被认为是由皮肤共生性痤疮杆菌引起的，尽管痤疮杆菌是如何 导致粉刺的原因尚不清楚。我们已经鉴定了两种类型的透明质酸酶，由不同的 痤疮假单胞菌，既有促炎作用，也有抗炎作用。重要的是，痤疮假单胞菌的皮肤定植 编码促炎症的透明质酸酶与痤疮的发生有关，而定植 对于痤疮假单胞菌来说，表达抗炎透明质酸酶的菌株与健康的皮肤有关。在……里面 初步实验表明，透明质酸酶的促炎或抗炎特性是 与酶产生的透明质酸片段的大小有关。因此，我们假设 透明质酸酶通过将透明质酸降解成不同大小来影响痤疮假单胞菌的致痘潜能。至 针对我们的假设，1)我们建议研究P. 痤疮透明质酸酶、透明质酸片段与TLR2/4的结合以及宿主对TLR2/4的免疫应答 透明质酸碎片。2)我们建议通过测试来确定这两种透明质酸酶对痤疮的贡献 具有良好特征的痤疮假单胞菌临床菌株和不表达透明质酸酶的痤疮假单胞菌突变株， 在一种新的小鼠痤疮模型中。3)我们还将研究基于透明质酸酶的策略，以预防或 治疗粉刺。

项目成果

Comparative Transcriptome Analysis of Acne vulgaris, Rosacea, and Hidradenitis Suppurativa Supports High Dose Dietary Zinc as a Therapeutic Agent.

寻常痤疮、红斑痤疮和化脓性汗腺炎的比较转录组分析支持高剂量膳食锌作为治疗剂。

• DOI: 10.1101/2023.11.28.23299152
• 发表时间: 2023
• 期刊: medRxiv : the preprint server for health sciences
• 作者: Li,Li;Hajam,Irshad;McGee,JeanS;Tang,Zhengkuan;Zhang,Ye;Badey,Nikil;Mintzer,Esther;Zhang,Zhenrui;Liu,GeorgeY;Church,GeorgeM;Wang,Yu
• 通讯作者: Wang,Yu