中国神经再生研究(英文版) ›› 2023, Vol. 18 ›› Issue (2): 389-395.doi: 10.4103/1673-5374.346054

• 原著:脑损伤修复保护与再生 • 上一篇    下一篇

b-雌二醇17-乙酸酯可提高神经外科患者大脑内皮细胞的活力

  

  • 出版日期:2023-02-15 发布日期:2022-08-08

β-Estradiol 17-acetate enhances the in vitro vitality of endothelial cells isolated from the brain of patients subjected to neurosurgery

Sonia Guzzo1, 2, Pasquale De Bonis3, Barbara Pavan1, 2, *, §, Luciano Fadiga1,2, §   

  1. 1Department of Neuroscience and Rehabilitation, Section of Physiology, University of Ferrara, Ferrara, Italy; 2Center for Translational Neurophysiology of Speech and Communication (CTNSC), Italian Institute of Technology (IIT), Ferrara, Italy; 3Department of Translational Medicine and for Romagna, University of Ferrara, Ferrara, Italy
  • Online:2023-02-15 Published:2022-08-08
  • Contact: Barbara Pavan, PhD, pvnbbr@unife.it.
  • Supported by:
    This work was supported by EnTimeMent H2020-FETPROACT-824160 (to LF). 

摘要:

为建立血脑屏障体外模型而分离内皮细胞,通过创新的脑部慢性植入物的生物仿生涂层技术可再现神经血管单元的特征。培养成人脑微血管内皮细胞通常被认为是一项具有挑战性的任务,因为这些细胞在体外很难存活,而且增殖能力逐渐降低。为此,实验假设自体来源人脑微血管内皮细胞(hBMECs)的是合适涂层的首要要求,实验拟保护神经外科患者的灰质和白质标本中分离出来的人脑微血管内皮细胞的体外生存能力。结果发现,10nMβ-雌二醇17-乙酸酯添加于hBMEC培养液中是促进新鲜分离和解冻后人脑微血管内皮细胞的黏附和增殖能力的一个重要因素,说明雌激素对微血管所起的保护作用。特别是,β-雌二醇17-醋酸酯对新鲜分离和解冻的女性来源的人脑微血管内皮细胞的黏附和增殖能力有更为关键的作用,而对新鲜分离的男性来源的人脑微血管内皮细胞则没有必要,然而它确实抵消了解冻状态下的活力下降。总之,添加β-雌二醇17-乙酸酯的人脑微血管内皮细胞培养系统可提高增强神经外科患者,特别是女性大脑内皮细胞的体外活力;实验结果为使用冻存的自体人脑微血管内皮细胞作为植入式神经设备(如微记录或微刺激系统)的仿生涂层开辟了新的前景,降低了进行额外手术取样的可能性。

https://orcid.org/0000-0001-8942-9310 (Barbara Pavan)

Abstract: In the current landscape of endothelial cell isolation for building in vitro models of the blood-brain barrier, our work moves towards reproducing the features of the neurovascular unit to achieve glial compliance through an innovative biomimetic coating technology for brain chronic implants. We hypothesized that the autologous origin of human brain microvascular endothelial cells (hBMECs) is the first requirement for the suitable coating to prevent the glial inflammatory response triggered by foreign neuroprosthetics. Therefore, this study established a new procedure to preserve the in vitro viability of hBMECs isolated from gray and white matter specimens taken from neurosurgery patients. Culturing adult hBMECs is generally considered a challenging task due to the difficult survival ex vivo and progressive reduction in proliferation of these cells. The addition of 10 nM β-estradiol 17-acetate to the hBMEC culture medium was found to be an essential and discriminating factor promoting adhesion and proliferation both after isolation and thawing, supporting the well-known protective role played by estrogens on microvessels. In particular, β-estradiol 17-acetate was critical for both freshly isolated and thawed female-derived hBMECs, while it was not necessary for freshly isolated male-derived hBMECs; however, it did counteract the decay in the viability of the latter after thawing. The tumor-free hBMECs were thus cultured for up to 2 months and their growth efficiency was assessed before and after two periods of cryopreservation. Despite the thermal stress, the hBMECs remained viable and suitable for re-freezing and storage for several months. This approach increasing in vitro viability of hBMECs opens new perspectives for the use of cryopreserved autologous hBMECs as biomimetic therapeutic tools, offering the potential to avoid additional surgical sampling for each patient. 

Key words: β-estradiol 17-acetate, 17β-estradiol, cryopreservation, gender-specific, gray matter, human brain microvascular endothelial cells, surgical resections, vascular protection, white matter