辐照和EO灭菌对SIS材料免疫原性的对比研究

孙磊; 袁源; 牛睿; 李伟峰; 翟晖; 牛旭锋

doi:10.13700/j.bh.1001-5965.2019.0621

辐照和EO灭菌对SIS材料免疫原性的对比研究

doi: 10.13700/j.bh.1001-5965.2019.0621

孙磊¹,
袁源²,
牛睿²,
李伟峰²,
翟晖²,
牛旭锋^{1, 3, ,}

1.
北京航空航天大学生物与医学工程学院, 北京 100083
2.
北京大清生物技术股份有限公司, 北京 100085
3.
北京航空航天大学生物医学工程高精尖创新中心, 北京 100083

基金项目:

国家自然科学基金 11872097

北京市自然科学基金-海淀原始创新联合基金 L182017

详细信息

作者简介:
孙磊男，博士研究生。主要研究方向：生物医用材料

牛旭锋男，博士，副教授，博士生导师。主要研究方向：生物医用材料

通讯作者:
牛旭锋, E-mail: nxf@buaa.edu.cn

中图分类号: R318.06
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- 被引次数: 0
出版历程
- 收稿日期: 2019-12-10
- 录用日期: 2019-12-29
- 网络出版日期: 2020-12-20

Comparative study on immunoreactions of small intestinal submucosa by irradiation and ethylene oxide sterilization treatments

SUN Lei¹,
YUAN Yuan²,
NIU Rui²,
LI Weifeng²,
ZHAI Hui²,
NIU Xufeng^{1, 3
, ,}

1.
School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
2.
Beijing Datsing Bio-Tech Co., Ltd., Beijing 100085, China
3.
Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China

Funds:

National Natural Science Foundation of China 11872097

Beijing Natural Science Foundation L182017

More Information

Corresponding author: NIU Xufeng, E-mail: nxf@buaa.edu.cn

摘要

摘要:
免疫反应大小是决定可植入生物材料能否开展临床应用的关键因素之一。研究评估了辐照和环氧乙烷（EO）两种灭菌方式处理后的小肠黏膜下层（SIS）脱细胞外基质材料在体内的免疫反应，旨在为其临床试验的开展提供可行依据。将两种灭菌方式处理的SIS脱细胞外基质材料皮下植入到BALB/c小鼠，第14和28天取样后，系统性地评估了其免疫反应。与仅手术不植入材料的阴性对照组相比，免疫器官（脾和淋巴结）的形态、质量、细胞数、淋巴细胞的体外增殖及酶联免疫吸附检测结果均无显著性差异，证明两种灭菌方式处理后的SIS脱细胞外基质材料都不会对小鼠引起明显的免疫排斥反应。流式细胞术分析及局部H&E染色结果表明，经EO灭菌处理的SIS脱细胞外基质材料对小鼠的免疫刺激更小，是更适用于此材料的灭菌方法。研究结果为SIS脱细胞外基质材料的灭菌程序及其临床应用提供了支持。
- 小肠黏膜下层(SIS) /
- 免疫反应 /
- 炎症 /
- 环氧乙烷(EO)灭菌 /
- 辐照灭菌
Abstract:
Foreign body reaction is one of the key factors limiting the application of implantable biomaterials. This study evaluates the in vivo immune response of acellular Small Intestinal Submucosa (SIS) materials treated with irradiation and Ethylene Oxide (EO) sterilization technology for providing a basis for clinical trials. The sterilized materials are subcutaneously implanted into BALB/c mice for 14 or 28 days. Compared with negative controlgroup, there is no difference in the size, weight, cell numbers, lymphocytes proliferation and enzyme-linked immunosorbent assay of the immune organs for two sterilized materials on mice. These results prove that the SIS materials treated by two sterilization methods do not cause obvious inflammatory reaction. Flow cytometry analysis and H&E staining results show that the materials sterilized by EO have less immune stimulation to mice. It means that EO treatment is a safer and more reliable sterilization method for SIS material, providing a prospect for sterilization procedure and clinical application of acellular SIS materials.
- Small Intestinal Submucosa (SIS) /
- immune response /
- inflammation /
- Ethylene Oxide (EO) sterilization /
- radiation sterilization

HTML全文

图 1 不同取样点代表性脾和淋巴结形态

Figure 1. Representative images of spleen and lymph nodes at different harvesting time points

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图 2 不同取样点的免疫器官质量及其细胞数(^*p < 0.05，^**p < 0.01)

Figure 2. Weight of immune organ as well as its cell population at different harvesting time points (^*p < 0.05, ^**p < 0.01)

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图 3 不同取样点的脾淋巴细胞的流式细胞图

Figure 3. Flow cytometric plots of splenic lymphocyte at different harvesting time points

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图 4 淋巴细胞体外增殖情况(^*p < 0.05)

Figure 4. Proliferation of lymphocyte in vitro (^*p < 0.05)

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图 5 小鼠在不同时间点对植入物的体液免疫反应

Figure 5. Humoral immune response of mice to implants at different harvesting time points

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图 6 植入部位的代表性H & E染色

Figure 6. Representative images of H & E staining at implantation sites

下载: 全尺寸图片幻灯片

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