Effect of Melatonin on Alpha Synuclein and Autophagy in Dopaminergic Neuronal Differentiation of Adipose Mesenchymal Stem Cells.

IF 1.6 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY
Hadeer Ahmed Mohamed Ibrahim, Abdelaziz Mohamed Hussein, Mahmoud Gabr, Rasha Aly El-Saeed, Omar Abd-Alhakem Ammar, Ahmed Abdulatif Hassan Mosa, Abdel-Aziz Fatouh Abdel-Aziz
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引用次数: 1

Abstract

Background: The current work investigated the effect of melatonin on differentiation of adipose mesenchymal stem cells (AD-MSCs) into dopamine producing cells and its effect on autophagy process and alpha-Synuclein (α-Syn) secretion.

Methods: AD-MSCs were characterized by flow cytometry and divided into 4 groups; i) control group (AD-MSCs without any treatment), ii) M+MSCs group (MSCs treated with 1 µM melatonin for 12 days), iii) DN group (MSCs cultured in neurobasal A medium and essential neuronal growth factors for 12 days) and iv) DN+M group (MSCs cultured in neurobasal A medium and 1µM melatonin for 12 days. By the end of experiments, the dopamine and α-Syn levels using ELISA, the expression of MAP-2, m-TOR and α-Syn genes at the level of mRNA and detection of autophagosomes formation using transmission electron microscope were performed.

Results: We found that the isolated cells were MSCs due to their positivity expression for CD105 and CD90 and negativity expression for CD34 and CD45. The concentration of dopamine was significantly higher and α-Syn concentration was significantly lower in DN+M group when compared to other groups (P< 0.005). Also, this group showed the highly expression for MAP-2 gene and less expression for m-TOR and α-Syn genes (P< 0.005). Moreover, there was significantly increase in autophagosomes formation in this group than another group (P< 0.005).

Conclusions: It is concluded that the melatonin promotes the differentiation of rat AD-MSCs into dopaminergic cells via induction of autophagy process and reduction of α-Syn secretion.

褪黑素对脂肪间充质干细胞多巴胺能神经元分化中α突触核蛋白和自噬的影响。
背景:本研究探讨了褪黑激素对脂肪间充质干细胞分化为多巴胺产生细胞的影响及其对自噬过程和α-突触核蛋白(α-Syn)分泌的影响。方法:采用流式细胞仪对AD骨髓间充质干细胞进行表征,并将其分为4组;i) 对照组(未经任何治疗的AD MSCs),ii)M+MSCs组(用1µM褪黑素治疗MSCs 12天),iii)DN组(MSCs在神经基底A培养基和必需的神经元生长因子中培养12天)和iv)DN+M组(MSCs在神经基底A培养基和1µM褪黑素中培养12天。实验结束时,使用ELISA检测多巴胺和α-Syn水平,在mRNA水平上检测MAP-2、M-TOR和α-Sin基因的表达,并使用透射电子显微镜检测自噬体的形成。结果:我们发现分离的细胞是MSCs,因为它们对CD呈阳性表达105和CD90以及CD34和CD45的阴性表达。与其他组相比,DN+M组多巴胺浓度显著升高,α-Syn浓度显著降低(P<0.005)。此外,该组MAP-2基因表达较高,M-TOR和α-Syn基因表达较少(P<005),结论:褪黑素通过诱导自噬过程和减少α-Syn分泌,促进大鼠AD MSCs向多巴胺能细胞分化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Reports of Biochemistry and Molecular Biology
Reports of Biochemistry and Molecular Biology BIOCHEMISTRY & MOLECULAR BIOLOGY-
CiteScore
2.80
自引率
23.50%
发文量
60
审稿时长
10 weeks
期刊介绍: The Reports of Biochemistry & Molecular Biology (RBMB) is the official journal of the Varastegan Institute for Medical Sciences and is dedicated to furthering international exchange of medical and biomedical science experience and opinion and a platform for worldwide dissemination. The RBMB is a medical journal that gives special emphasis to biochemical research and molecular biology studies. The Journal invites original and review articles, short communications, reports on experiments and clinical cases, and case reports containing new insights into any aspect of biochemistry and molecular biology that are not published or being considered for publication elsewhere. Publications are accepted in the form of reports of original research, brief communications, case reports, structured reviews, editorials, commentaries, views and perspectives, letters to authors, book reviews, resources, news, and event agenda.
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