Glutamine Maintains Satellite Glial Cells Growth and Survival in Culture

Glutamine Maintains Satellite Glial Cells Growth and Survival in Culture
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谷氨酰胺维持培养物中卫星胶质细胞的生长和存活

DOI:
10.1007/s11064-022-03614-z
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发表时间:
2022-05
期刊:
Neurochem Res
影响因子:
--
通讯作者:
Yao-Qing Yu
Yao-Qing Yu
中科院分区:
其他
文献类型:
--
作者:
Na Wei;Ya-Ping Liu;Rui-Rui Wang;Zhen-Juan Zhong;Xiao-Liang Wang;Yan Yang;Ting He;Si-Jia Zhao;Huan Wang;Yao-Qing Yu

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卫星胶质细胞 (SGC) 紧密包围神经元并调节背根神经节 (DRG) 的感觉传递。目前,培养中原代SGC的生物学特性值得进一步研究。为了揭示 SGC 生长和存活的关键因素,我们检查了包含 Dulbecco 改良 Eagle 培养基 (DMEM)/F12、DMEM 高葡萄糖 (HG) 或 Neurobasal-A (NB) 的不同培养物补充剂的效果。 CCK-8增殖测定显示DMEM/F12和DMEM/HG中SGC的增殖增加,但在NB培养基中则没有。 Bax、AnnexinV 和碘化丙啶 (PI) 染色结果显示 NB 培养基导致细胞死亡和凋亡。我们发现 DMEM/F12 和 DMEM/HG 中谷氨酰胺含量超过 2.5 mM,而 NB 培养基中则不存在。有趣的是,外源谷氨酰胺的应用显着逆转了 NB 培养基中 SGC 的增殖不良和细胞死亡。这些结果表明 DMEM/F12 培养基是获得高纯度 SGC 的最佳选择。谷氨酰胺是维持 SGC 在培养物中生长和存活的关键分子。在这里,我们提供了一种通过改变培养基的关键成分来获得高纯度SGC的新方法。我们的研究为了解初级感觉神经节神经胶质细胞的生物学特性和调节提供了新的思路。
Satellite glial cells (SGCs) tightly surround neurons and modulate sensory transmission in dorsal root ganglion (DRG). At present, the biological property of primary SGCs in culture deserves further investigation. To reveal the key factor for SGCs growth and survival, we examined the effects of different culture supplementations containing Dulbecco's Modified Eagle Medium (DMEM)/F12, DMEM high glucose (HG) or Neurobasal-A (NB). CCK-8 proliferation assay showed an increased proliferation of SGCs in DMEM/F12 and DMEM/HG, but not in NB medium. Bax, AnnexinV, and propidium iodide (PI) staining results showed that NB medium caused cell death and apoptosis. We showed that glutamine was over 2.5 mM in DMEM/F12 and DMEM/HG, whereas it was absence in NB medium. Interestingly, exogenous glutamine application significantly reversed the poor proliferation and cell death of SGCs in NB medium. These findings demonstrated that DMEM/F12 medium was optimal to get high-purity SGCs. Glutamine was the key molecule to maintain SGCs growth and survival in culture. Here, we provided a novel approach to get high-purity SGCs by changing the key component of culture medium. Our study shed a new light on understanding the biological property and modulation of glial cells of primary sensory ganglia.
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