中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (23): 3633-3637.doi: 10.12307/2022.660

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

兔耳郭软骨细胞的分离培养与鉴定

钟自玲1,2,瞿申红2,韩  星2,吴  迪2   

  1. 1广西中医药大学研究生院,广西壮族自治区南宁市  530200;2广西壮族自治区人民医院耳鼻咽喉头颈外科,广西壮族自治区南宁市  530016
  • 收稿日期:2021-06-03 接受日期:2021-07-17 出版日期:2022-08-18 发布日期:2022-02-12
  • 通讯作者: 瞿申红,博士,主任医师,广西壮族自治区人民医院耳鼻咽喉头颈外科,广西壮族自治区南宁市 530016
  • 作者简介:钟自玲,女,1996年生,四川省绵阳市人,汉族,广西中医药大学在读硕士,主要从事3D打印技术在耳鼻咽喉头颈外科的应用研究。
  • 基金资助:
    广西科技计划项目重点研发计划(桂科AB1850010),项目负责人:瞿申红;广西医疗卫生适宜技术开发与推广应用项目(S2018039),项目负责人:瞿申红

Isolation, culture and identification of rabbit auricular chondrocytes

Zhong Ziling1, 2, Qu Shenhong2, Han Xing2, Wu Di2   

  1. 1Graduate School, Guangxi University of Chinese Medicine, Nanning 530200, Guangxi Zhuang Autonomous Region, China; 2Department of Otorhinolaryngology, Head and Neck Surgery, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, Guangxi Zhuang Autonomous Region, China
  • Received:2021-06-03 Accepted:2021-07-17 Online:2022-08-18 Published:2022-02-12
  • Contact: Qu Shenhong, MD, Chief physician, Department of Otorhinolaryngology, Head and Neck Surgery, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530022, Guangxi Zhuang Autonomous Region, China
  • About author:Zhong Ziling, Master candidate, Graduate School, Guangxi University of Chinese Medicine, Nanning 530200, Guangxi Zhuang Autonomous Region, China; Department of Otorhinolaryngology, Head and Neck Surgery, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, Guangxi Zhuang Autonomous Region, China
  • Supported by:
    Key Research and Development Plan of Science and Technology Plan Project of Guangxi Zhuang Autonomous Region, No. AB1850010 (to QSH); Medical and Health Appropriate Technology Development and Application Project of Guangxi Zhuang Autonomous Region, No. S2018039 (to QSH)

摘要:

文题释义:
耳郭软骨:属于弹性软骨,由软骨组织及周围的软骨膜构成。软骨组织由软骨细胞和软骨基质构成,其中软骨细胞位于软骨陷窝内,染色浅淡,胞质弱嗜碱性,能合成和分泌软骨组织的基质和纤维;软骨基质是软骨组织的细胞外基质,呈固态,含有大量交织成网的弹性纤维,胶原原纤维较少,聚集蛋白聚糖,决定软骨的结构和功能特点。
MTT比色法:是一种检测细胞存活和生长的方法。其检测原理为活细胞线粒体中的琥珀酸脱氢酶能使外源性MTT还原为水不溶性的蓝紫色结晶甲臜并沉积在细胞中,而死细胞无此功能。二甲基亚砜能溶解细胞中的甲臜,用酶联免疫检测仪在490 nm波长处测定其光吸收度值,可间接反映活细胞数量。在一定细胞数范围内,MTT结晶形成的量与细胞数成正比。该方法已广泛用于一些生物活性因子的活性检测、大规模的抗肿瘤药物筛选、细胞毒性试验以及肿瘤放射敏感性测定等。

背景:基于3D打印支架材料的耳郭畸形再造是近年来的研究热点,而软骨细胞在支架上能否正常生长是其关键问题。
目的:通过探讨兔耳郭软骨细胞的原代培养方法,为软骨细胞与组织工程学结合的应用奠定坚实基础。
方法:采用胰蛋白酶和Ⅱ型胶原酶序贯消化法获取兔耳郭软骨细胞,体外培养并传代。通过不同传代细胞的形态学观察、生长曲线绘制、番红O-固绿染色、甲苯胺蓝染色、维多利亚蓝染色及糖胺多糖表达水平测定,对软骨细胞进行鉴定。
结果与结论:①倒置相差显微镜观察耳郭软骨细胞正常形态为梭形及多角形,传代培养6代以后成明显长梭形,且增殖速度明显减缓甚至停滞;②生长曲线绘制显示软骨细胞第2-5代均能稳定成直线增殖趋势;③番红O-固绿染色显示兔耳郭软骨细胞的细胞核结构和细胞质结构清晰,具有良好的形态学特征;④甲苯胺蓝染色提示软骨基质在培养初期分泌较少,随着细胞融合的增多而逐渐增加;⑤维多利亚蓝染色显示软骨细胞有胶原纤维生成,提示其具有正常功能;⑥糖胺多糖表达水平测定显示软骨细胞有特异性糖胺多糖的分泌;⑦实验成功建立了兔耳郭软骨细胞原代培养的分离和鉴定体系,获得了具有生物活性、可以进一步运用于组织工程学研究的耳郭软骨细胞。

https://orcid.org/0000-0002-3721-4956 (钟自玲) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 耳郭再造, 软骨细胞, 原代培养, 细胞鉴定, 序贯消化法

Abstract: BACKGROUND: Auricle deformity remodeling based on three-dimensional printing scaffold materials has become a focus in recent years, and whether chondrocytes can grow normally on a scaffold is the key issue.  
OBJECTIVE: To investigate the primary culture methods of rabbit auricular chondrocytes, thereby laying a solid foundation for the application of chondrocytes combined with tissue engineering. 
METHODS: Rabbit auricular chondrocytes were obtained by trypsin and type II collagenase sequential digestion method. The chondrocytes were cultured and subcultured in vitro. The chondrocytes were identified by morphological observation, growth curve drawing, safranin O-fast green staining, toluidine blue staining, Victoria blue staining, and glycosaminoglycan content determination. 
RESULTS AND CONCLUSION: The normal morphology of auricular chondrocytes was fusiform and polygonal under inverted phase contrast microscope. After six generations of subculture, the cells became obviously long fusiform, and the proliferation rate slowed down or even stopped. The growth curve showed that the chondrocytes from the 2nd to 5th generations could proliferate in a straight line. Results of safranin O-fast green staining showed clear nucleus and cytoplasm structures of rabbit auricular chondrocytes, with good morphological characteristics. Results of toluidine blue staining indicated that the secretion of cartilage matrix was less at the initial stage of culture and increased gradually with the increase of cell fusion. Results of Victoria blue staining showed the formation of collagen fibers in chondrocytes, suggesting the normal function of chondrocytes. Results of glycosaminoglycans content determination showed the specific secretion of glycosaminoglycans in chondrocytes. Overall, the isolation and identification system of rabbit auricular chondrocytes in primary culture was successfully established, and the auricular chondrocytes with biological activity were obtained, which could be further used in tissue engineering research. 

Key words: auricle reconstruction, chondrocyte, primary culture, cell identification, sequential digestion

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