三维纤维化细胞外矩阵指导微环境纤维由纤维细胞重塑
Mehmet Nizamoglu1, Frederique Alleblas2, Taco Koster2
1University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, the Netherlands; University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the Netherlands.
Acta biomaterialia
|February 13, 2024
概括
异常性肺纤维化 (IPF) 涉及异常的细胞外基质 (ECM) 沉积. 这项研究表明,纤维化肺ECM显著改变纤维细胞行为和组织机制,影响IPF的进展.
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 病理学 病理学 病理学
背景情况:
- 异常性肺纤维化 (IPF) 是一种进展性肺病,其特征是细胞外基质 (ECM) 沉积过多且不组织.
- 据信,IPF中改变的ECM微环境通过促进益菌性纤维细胞行为来推动疾病的进展.
- 对IPF的有效治疗方法仍然有限,需要对疾病机制有更深入的了解.
研究的目的:
- 在3D体外模型中研究IPF衍生的ECM对肺纤维细胞行为的影响.
- 为了比较对照和IPF肺纤维细胞在控制和纤维ECM微环境中培养时的反应.
- 阐明3D微环境在IPF中指导纤维细胞介导的ECM重塑中的作用.
主要方法:
- 使用来自非纤维 (对照) 和IPF肺组织的ECM衍生水凝开发体外3D模型.
- 在这些水凝中培养初级人类肺纤维细胞 (对照和IPF).
- 分析了原蛋白和糖氨基甘氨酸含量,纤维组织,高密度原蛋白百分比和水凝随时间变硬.
主要成果:
- 在纤维化水凝中培养显著改变了ECM纤维组织,但不是总体的原蛋白或糖氨基甘油含量.
- 控制纤维细胞最初增加了IPF水凝中的高密度原体,而IPF纤维细胞后来减少了它,伴随着增强的纤维对齐.
- 水凝硬度在控制纤维细胞的纤维状条件下增加,但在控制水凝中的IPF纤维细胞中没有增加.
结论:
- 纤维细胞的反应受到细胞的起源和ECM微环境的显著影响.
- 在IPF中,3D微环境在指导纤维细胞介导的ECM重塑中发挥着关键的指导作用.
- 这些发现提供了对IPF病变的洞察力,并可能为治疗纤维性疾病和癌症的未来治疗策略提供信息.
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