中国神经再生研究(英文版) ›› 2021, Vol. 16 ›› Issue (9): 1890-1896.doi: 10.4103/1673-5374.306091

• 原著:周围神经损伤修复保护与再生 • 上一篇    

用两性去污剂和核酸酶制备人去细胞同种异体神经移植物

  

  • 出版日期:2021-09-15 发布日期:2021-02-05
  • 基金资助:

    这项研究得到了韩国卫生产业发展研究所; 韩国国家研究基金会牙山生命科学研究所,牙山医学中心的支持

Preparation of human decellularized peripheral nerve allograft using amphoteric detergent and nuclease

Joo-Yul Bae1, #, Suk Young Park2, #, Young Ho Shin2, Shin Woo Choi1, Jae Kwang Kim2, *   

  1. 1Department of Orthopedic Surgery, University of Ulsan College of Medicine, Gangneung Asan Hospital, Gangneung-si, Korea; 2Department of Orthopedic Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
  • Online:2021-09-15 Published:2021-02-05
  • Contact: Jae Kwang Kim, MD, PhD, orth4535@gmail.com.
  • Supported by:
    This study was supported by the Korea Health Industry Development Institute, No. HI17C1221 (to JKK); National Research Foundation of Korea, Nos. NRF-2017R1A2B4003692, NRF-2020R1A2C1006656 (both to JKK); the Asan Institute for Life Sciences, Asan Medical Center, Nos. 2018-766, 2019IP0766 (both to JKK). 

摘要:

已有动物研究结果显示,两性去污剂和核酸酶(脱氧核糖核酸酶I和核糖核酸酶A)的组合是最可靠的周围神经去细胞化学试剂,但用于人同种异体神经移植去细胞的最佳化学试剂组合尚需进一步探讨。为了解两种不同的去细胞方法来制备人去细胞同种异体神经移植,以便找到去除组织免疫原性细胞成分并保留基底层和细胞外基质的最佳方案。实验评估了正中神经和腓肠神经的去细胞状态,以研究该方案是否可应用于大直径人周围神经。使用两种不同的方法将尸体的正中神经和腓肠神经去细胞:非离子去污剂-阴离子去污剂(Triton X-100和脱氧胆酸钠)和两性去污剂-核酸酶(脱氧核糖核酸酶I和核糖核酸酶A)。用两性去污剂-核酸酶处理的中,腓肠神经成功清除了所有细胞组分。然而,使用非离子型去污剂-阴离子型去污剂处理正中神经去除细胞组分不完全。用两性去污剂-核酸酶处理的正中神经和腓肠神经均保持完整细胞外基质。用非离子去污剂-阴离子去污剂处理可减少两种神经中的胶原蛋白含量,而两性去污剂-核酸酶处理则不会降低胶原蛋白含量。此外,接触细胞毒性实验表明,两性去污剂-核酸酶方法处理的神经具有生物相容性。强度破坏测试表明,使用两性去污剂-核酸酶方法可以使去细胞神经的生物力学性能与新鲜神经相当。两性去污剂-核酸酶方法比基于去污剂的方法组合显示出更好的细胞去除和细胞外基质保存性能。

https://orcid.org/0000-0001-5104-4634 (Jae Kwang Kim)

Abstract: Animal studies have shown that amphoteric detergent and nuclease (DNase I and ribonuclease A) is the most reliable decellularization method of the peripheral nerve. However, the optimal combination of chemical reagents for decellularization of human nerve allograft needs further investigation. To find the optimal protocol to remove the immunogenic cellular components of the nerve tissue and preserve the basal lamina and extracellular matrix and whether the optimal protocol can be applied to larger-diameter human peripheral nerves, in this study, we decellularized the median and sural nerves from the cadavers with two different methods: nonionic and anionic detergents (Triton X-100 and sodium deoxycholate) and amphoteric detergent and nuclease (3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS), deoxyribonuclease I, and ribonuclease A). All cellular components were successfully removed from the median and sural nerves by amphoteric detergent and nuclease. Not all cellular components were removed from the median nerve by nonionic and anionic detergent. Both median and sural nerves treated with amphoteric detergent and nuclease maintained a completely intact extracellular matrix. Treatment with nonionic and anionic detergent decreased collagen content in both median and sural nerves, while the amphoteric detergent and nuclease treatment did not reduce collagen content. In addition, a contact cytotoxicity assay revealed that the nerves decellularized by amphoteric detergent and nuclease was biocompatible. Strength failure testing demonstrated that the biomechanical properties of nerves decellularized with amphoteric detergent and nuclease were comparable to those of fresh controls. Decellularization with amphoteric detergent and nuclease better remove cellular components and better preserve extracellular matrix than decellularization with nonionic and anionic detergents, even in large-diameter human peripheral nerves. In Korea, cadaveric studies are not yet legally subject to Institutional Review Board review.

Key words: median nerve, sural nerve, nuclease, detergent, human decellularized nerve graft