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世界上首个接种了[具体菌种1]和[具体菌种2]的人源三维离体皮脂腺痤疮菌群失调样模型

The World's First Acne Dysbiosis-like Model of Human 3D Ex Vivo Sebaceous Gland Colonized with and .

作者信息

Forraz Nico, Bize Cécile, Desroches Anne-Laure, Milet Clément, Payen Pauline, Chanut Pauline, Kern Catherine, Garcia Christine, McGuckin Colin

机构信息

CTISkin Department, CTIBIOTECH, 69330 Meyzieu, France.

Seppic Research & Innovation, 92250 La Garenne Colombes, France.

出版信息

Microorganisms. 2023 Aug 29;11(9):2183. doi: 10.3390/microorganisms11092183.

Abstract

Acne-prone skin is associated with dysbiosis involving () and () causing increased seborrhea in sebaceous glands (SG) and inflammation. Human primary sebocytes were cultivated using 1.10 UFC/mL Type IA (facial acne, ATCC6919) and/or 1.10 UFC/mL (unknown origin, ATCC12228) for 48 h in our SEB4GLN-optimized media without antibiotics. Bacteria and sebocytes were enumerated and assessed to determine their viability. Lipid production was imaged and quantified via Nile Red staining. SG with hair follicles were microdissected from healthy skin and cultured using 1.10 UFC/mL Type 1A and/or 1.10 UFC/mL (wild-type facial skin strain) through prior fixation and immunostaining for MC5R, and nuclei (DAPI) via Z-stack confocal microscopy bioimaging (Leica SP5X & FIJI software, Version 2.9.0). growth was not impacted when co-cultivated with sebocytes (2D) or SG (3D) models. Phylotype IA stimulated sebocyte lipid production, which had no impact on viability. The reference strain overproliferated, inducing sebocyte mortality. For 3D SG model, culture conditions were optimized using a wild-type facial skin strain at a lower concentration, 1:10 ratio to reduced contact time, sequential inoculation and rinsing step. Bioimaging revealed strong labeling in the active areas of the pilosebaceous unit. formed biofilm, which was distributed across the SG via non-specific fluorescence imaging. We developed an innovative model of a sebaceous gland that mimics acne-prone skin with lipid overproduction and virulent phylotype IA inoculation.

摘要

易长痤疮的皮肤与微生物群失调有关,涉及()和(),导致皮脂腺(SG)皮脂分泌增加和炎症。在我们不含抗生素的SEB4GLN优化培养基中,使用1.10 UFC/mL IA型(面部痤疮,ATCC6919)和/或1.10 UFC/mL(来源不明,ATCC12228)培养人原代皮脂细胞48小时。对细菌和皮脂细胞进行计数和评估以确定其活力。通过尼罗红染色对脂质生成进行成像和定量。从健康皮肤中显微切割出带有毛囊的SG,通过先前的固定以及针对MC5R、和细胞核(DAPI)的免疫染色,使用1.10 UFC/mL 1A型和/或1.10 UFC/mL(野生型面部皮肤菌株),通过Z-stack共聚焦显微镜生物成像(徕卡SP5X和FIJI软件,版本2.9.0)进行培养。与皮脂细胞(二维)或SG(三维)模型共培养时,(某种细菌)的生长未受影响。IA型菌系刺激皮脂细胞脂质生成,但对活力无影响。(某种细菌)参考菌株过度增殖,导致皮脂细胞死亡。对于三维SG模型,使用野生型面部皮肤菌株在较低浓度、1:10比例、减少接触时间、顺序接种和冲洗步骤的条件下优化培养条件。生物成像显示在毛囊皮脂腺单元的活跃区域有强烈的(某种细菌)标记。(某种细菌)形成生物膜,通过非特异性荧光成像分布在整个SG中。我们开发了一种创新的皮脂腺模型,该模型模拟了脂质过度生成且接种有毒力IA型菌系的易长痤疮皮肤。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cbb5/10537848/5a3239e43acb/microorganisms-11-02183-g001.jpg

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