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Mouse Degenerating Optic Axons Survived by Human Embryonic Stem Cell-Derived Neural Progenitor Cells 人类胚胎干细胞衍生的神经祖细胞存活小鼠变性视神经轴突
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.7873
Shiva Nemati, Zahra Seiedrazizadeh, Susan Simorgh, M. Hesaraki, S. Kiani, M. Javan, F. Pakdel, L. Satarian
Objective Any damage to the optic nerve can potentially lead to degeneration of non-regenerating axons and ultimately death of retinal ganglion cells (RGCs) that in most cases, are not curable by surgery or medication. Neuroprotective functions of different types of stem cells in the nervous system have been evaluated in many studies investigating the effectiveness of these cells in various retinal disease models. Neural progenitor cells (NPCs) secrete an assortment of trophic factors that are vital to the protection of the visual system. We aimed to assess the therapeutic potentials of NPCs in an ONC mouse model. Materials and Methods In this experimental study, NPCs were produced using noggin and retinoic acid from human embryonic stem cells (hESCs). Fifty mice were divided into the following three groups: i. Intact , ii. Vehicle [optic nerve crush+Hank’s balanced salt solution (HBSS)], and iii. Treatment (optic nerve crush+NPCs). The visual behavior of the mice was examined using the Visual Cliff test, and in terms of RGC numbers, they were assessed by Brn3a immunostaining and retrograde tracing using DiI injection. Results Intravenous injection of 50,000 NPCs through visual cliff did not produce any visual improvement. However, our data suggest that the RGCs protection was more than two-times in NPCs compared to the vehicle group as examined by Brn3a staining and retrograde tracing. Conclusion Our study indicated that intravenous injection of NPCs could protect RGCs probably mediated by trophic factors. Due to this ability and good manufacturing practices (GMP) grade production feasibility, NPCs may be used for optic nerve protection.
目的视神经的任何损伤都可能导致非再生轴突变性和视网膜神经节细胞(RGCs)的最终死亡,这在大多数情况下是无法通过手术或药物治愈的。不同类型的干细胞在神经系统中的神经保护功能已经在许多研究中被评估,这些研究调查了这些细胞在各种视网膜疾病模型中的有效性。神经祖细胞(npc)分泌各种各样的营养因子,对保护视觉系统至关重要。我们的目的是评估NPCs在ONC小鼠模型中的治疗潜力。材料与方法利用人胚胎干细胞(hESCs)中的头蛋白和维甲酸制备NPCs。50只小鼠分为以下三组:1 .完整组;载体[视神经挤压+汉克平衡盐溶液(HBSS)];治疗(视神经压迫+ npc)。采用视觉悬崖法检测小鼠视觉行为,采用Brn3a免疫染色法和DiI注射逆行示迹法评估小鼠RGC数量。结果经视觉悬崖静脉注射5万例npc无明显视觉改善。然而,我们的数据表明,通过Brn3a染色和逆行示踪检测,npc中rgc的保护作用是载药组的两倍以上。结论静脉注射NPCs对RGCs具有一定的保护作用,可能与营养因子有关。由于这种能力和良好生产规范(GMP)级生产的可行性,npc可用于视神经保护。
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引用次数: 2
Protective Effect of Low Dose of Methamphetamine on The Amount of Extracellular Glutamine in Primary Fetal Human Astrocytes Induced by Amyloid Beta 低剂量甲基苯丙胺对β淀粉样蛋白诱导的人胚胎星形细胞细胞外谷氨酰胺含量的保护作用
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.7917
B. Soltanian, Marzieh Dehghan Shasaltaneh, G. Riazi, N. Masoudian
Objective Change in astrocytes is one of the first pathological symptoms of Alzheimer’s disease (AD). Understanding the signaling pathways in astrocytes can be a great help in treating of AD. This study aimed to investigate signaling pathway relations between low dose of methamphetamine (METH), the apoptosis, cell cycle, and glutamine (Gln) pathways in the activated astrocyte. Materials and Methods In this experimental study, the activated astrocyte cells were exposed to a low dose of METH (12.5 µM) which was determined by Thiazolyl blue tetrazolium bromide (MTT) method. The groups were: group 1 cells with Aβ, group 2 cells with METH, group 3 cells with METH after 24 hours of adding Aβ (Aβ+METH, treated group), group 4 cells with Aβ after 24 hours of adding METH (METH+Aβ, prevention group), and group 5 as the control. The Gln was assayed by high-performance liquid chromatography (HPLC), and also the apoptosis, and cell cycle and BAX, BCL-X expression was evaluated. Results The amount of Gln was increased, and the value of late and early apoptosis was reduced in the treatment groups, and necrosis is decreased in the prevention group (group 4 compared to group 1). Moreover, it was revealed through cell cycle analysis that G2 in group 4 was reduced compared to group 1 and the expression of BAX, BAX/ BCL-X, and BCL-X in group 3 and group 4, was decreased and increased, respectively compared to group 1. Conclusion These findings suggest that perhaps a non-toxic dosage of METH (low dose) can reduce the amount of apoptosis and BAX expression and increase the expression of BCL-X. Furthermore, the cells are arrested in the G2 phase and can raise the amount of extracellular glutamine, which has a protective role in neuron cells. These findings may provide a new perspective to design a new drug with less toxic results.
目的星形胶质细胞的改变是阿尔茨海默病(AD)的首要病理症状之一。了解星形胶质细胞的信号通路对阿尔茨海默病的治疗有很大的帮助。本研究旨在探讨低剂量甲基苯丙胺(METH)与活化星形胶质细胞凋亡、细胞周期和谷氨酰胺(Gln)通路之间的信号通路关系。材料与方法本实验将激活的星形胶质细胞暴露于低剂量的甲基安非他明(12.5µM)下,采用噻唑蓝溴化四唑(MTT)法测定。各组分别为:Aβ加入组1、Aβ加入组2、Aβ加入24 h后加入组3 (Aβ+甲基苯丙胺处理组)、Aβ加入24 h后加入组4 (Aβ加入甲基苯丙胺+甲基苯丙胺预防组)、对照组5。采用高效液相色谱法检测Gln,同时检测细胞凋亡、细胞周期及BAX、BCL-X的表达。结果治疗组Gln含量升高,晚期和早期凋亡值降低,预防组坏死减少(4组较1组),细胞周期分析显示,4组G2较1组降低,3组BAX、BAX/ BCL-X、BCL-X表达量分别较1组降低和升高。结论无毒剂量(低剂量)的甲基安非他明可降低细胞凋亡量和BAX表达,增加BCL-X表达。此外,细胞停留在G2期,可以增加细胞外谷氨酰胺的数量,这对神经元细胞具有保护作用。这些发现可能为设计毒性较低的新药提供新的视角。
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引用次数: 0
The Impact of Different Cell Culture Mediums on CD8+T Cells Expansion: A Bioinformatics Study 不同细胞培养基对CD8+T细胞扩增的影响:生物信息学研究
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.7779
Arsalan Jalili, A. Hajifathali, A. Bereimipour, E. Roshandel, N. Aghdami
Objective Different Cell Culture medias can affect the expansion of T cells. The aim of this study is to assess signaling pathways, protein interactions and genes in T cells cultured in different common T cell expansion medias to select the best candidate. Materials and Methods In this in silico observational study, with the use of bioinformatics analysis and the use of enrichment databases, gene expression profiles were investigated using microarray analysis. Results The results of this study were the joint selection of 26 upregulated genes and 59 downregulated genes that were involved in SREBP control of lipid synthesis, co-stimulatory signal during T-cell activation mitosis and chromosome dynamics, telomeres, telomerase, and cellular aging signal pathways. Conclusion Using bioinformatics analyzes, integrated and regular genes were selected as common genes CD80, LST1, ATM and ITM2B 4-1BBL, Akt inhibitor, interleukin 7 and 15 expansion media.
目的不同细胞培养基对T细胞增殖的影响。本研究的目的是评估在不同的普通T细胞扩增培养基中培养的T细胞的信号通路、蛋白质相互作用和基因,以选择最佳的候选T细胞。材料和方法在这项计算机观察研究中,利用生物信息学分析和富集数据库,利用微阵列分析研究基因表达谱。结果联合筛选了参与SREBP调控脂质合成、t细胞活化有丝分裂和染色体动力学共刺激信号、端粒、端粒酶和细胞衰老信号通路的26个上调基因和59个下调基因。结论通过生物信息学分析,选择整合基因和规则基因作为常见基因CD80、LST1、ATM和ITM2B 4-1BBL、Akt抑制剂、白细胞介素7和15扩增培养基。
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引用次数: 0
Generation of An Induced Pluripotent Stem Cell Line from Human Liver Fibroblasts from A Patient with Combined Hepatocellular-Cholangiocarcinoma 肝细胞胆管合并癌患者肝成纤维细胞诱导多能干细胞系的建立
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.7765
Hyo-Suk Ahn, Jae‐Sung Ryu, Jaeseo Lee, Seon Ju Mun, Yeon-Hwa Hong, Yong-Moon Shin, Kyungmee Chung, M. Son
Objective Combined hepatocellular-cholangiocarcinoma (cHCC-CC) is a rare type of primary liver cancer with characteristics of both hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC). The pathogenesis of cHCC- CC is poorly understood due to a shortage of suitable in vitro models. Due to scarce availability of human liver tissue, induced pluripotent stem cells (iPSCs) are a useful alternative source to produce renewable liver cells. For use in the development of liver pathology models, here we successfully developed and evaluated iPSCs from liver fibroblasts of a patient with cHCC-CC. Materials and Methods In this experimental study, human liver fibroblasts (HLFs) were obtained from the liver biopsy of a 69-year-old male patient with cHCC-CC and transduced with a retroviral cocktail that included four factors - OCT4, SOX2, KLF4, and c-MYC (OSKM). Pluripotency of the iPSCs was determined by alkaline phosphatase (AP) staining, quantitative real-time polymerase chain reaction (PCR), and immunofluorescence. We induced in vitro embryoid body (EB) formation and performed an in vivo teratoma assay to confirm their differentiation capacity into the three germ layers. Results HLF iPSCs derived from the cHCC-CC patient displayed typical iPSC-like morphology and pluripotency marker expression. The proficiency of the iPSCs to differentiate into three germ layers was assessed both in vitro and in vivo. Compared to normal control iPSCs, differentiated HLF iPSCs showed increased expressions of HCC markers alpha-fetoprotein (AFP) and Dickkopf-1 (DKK1) and the CC marker cytokeratin 7 (CK7), and a decreased expression of the CC tumour suppressor SRY-related HMG-box 17 (SOX17). Conclusion We established HLF iPSCs using liver fibroblasts from a patient with cHCC-CC for the first time. The HLF iPSCs maintained marker expression in the patient when differentiated into EBs. Therefore, HLF iPSCs may be a sustainable cell source for modelling cHCC-CC and beneficial for understanding liver cancer pathology and developing therapies for cHCC-CC treatment.
目的肝细胞胆管合并癌(cHCC-CC)是一种罕见的原发性肝癌,具有肝细胞癌和胆管癌的双重特征。由于缺乏合适的体外模型,cHCC- CC的发病机制尚不清楚。由于人类肝组织的稀缺,诱导多能干细胞(iPSCs)是产生可再生肝细胞的一个有用的替代来源。为了用于肝脏病理模型的开发,我们成功地从cHCC-CC患者的肝成纤维细胞中开发并评估了iPSCs。材料和方法在本实验研究中,从一名69岁男性cHCC-CC患者的肝活检中获得人肝成纤维细胞(HLFs),并用包含四种因子OCT4、SOX2、KLF4和c-MYC (OSKM)的逆转录病毒鸡尾酒进行转导。通过碱性磷酸酶(AP)染色、实时定量聚合酶链反应(PCR)和免疫荧光检测多能干细胞的多能性。我们在体外诱导胚胎样体(EB)形成,并在体内进行畸胎瘤实验,以证实它们向三个胚层的分化能力。结果从cHCC-CC患者获得的HLF iPSCs表现出典型的ipsc样形态和多能性标记物的表达。在体外和体内对iPSCs分化为三种胚层的能力进行了评估。与正常对照iPSCs相比,分化的HLF iPSCs显示HCC标志物甲胎蛋白(AFP)和Dickkopf-1 (DKK1)以及CC标志物细胞角蛋白7 (CK7)的表达增加,而CC肿瘤抑制因子sry相关的HMG-box 17 (SOX17)的表达降低。结论我们首次利用cHCC-CC患者的肝成纤维细胞构建了HLF iPSCs。HLF iPSCs分化为EBs时,在患者体内保持标志物表达。因此,HLF iPSCs可能是构建cHCC-CC模型的可持续细胞来源,有助于了解肝癌病理和开发治疗cHCC-CC的方法。
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引用次数: 0
LINC00174 Suppresses Non-Small Cell Lung Cancer Progression by Up-Regulating LATS2 via Sponging miR-31-5p LINC00174通过海绵miR-31-5p上调LATS2抑制非小细胞肺癌进展
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.7991
Xu Cheng, Mali Sha, Wen-yang Jiang, Lin-Yu Chen, Mei-hua Song
Objective Dysregulation of long non-coding RNAs (lncRNAs) is associated with the progression of non-small cell lung cancer (NSCLC). This study aimed to investigate the role of long intergenic non-protein coding RNA 174 (LINC00174) in NSCLC. Materials and Methods In this experimental study, LINC00174 expression in NSCLC tissues and cell lines was investigated by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Besides, cell counting kit-8 (CCK-8), 5-bromo-2'-deoxyuridine (BrdU). Transwell and Flow Cytometry assays were applied to detect the regulatory function of LINC00174 on the growth, migration and apoptosis of NSCLC cells. Bioinformatics analysis, dual luciferase reporter gene assay and RNA immunoprecipitation (RIP) assay predicted and verified the targeting relationship between LINC00174 and miR-31-5p, and between miR-31-5p and the 3´-untranslated region (3´UTR) of large tumor suppressor kinase 2 (LATS2), respectively. Western blotting was performed to detect the regulatory function of LINC00174 and miR-31-5p on LATS2 protein expression. Results Compared with that in normal lung tissues, LINC00174 expression in NSCLC tissues and cell lines was reduced. LINC00174 expression was negatively associated with the TNM stage of the patients. Functional experiments showed that LINC00174 overexpression inhibited NSCLC cell multiplication and migration, and induced apoptosis. Furthermore, LINC00174 targeted miR-31-5p and repressed its expression. Additionally, LINC00174 upregulated LATS2 expression through competitively binding to miR-31-5p. Conclusion LINC00174, as a competitive endogenous RNA, elevates LATS2 expression by adsorbing miR-31-5p, thereby inhibiting the viability and migration of NSCLC cells, and promoting apoptosis.
目的长链非编码rna (lncRNAs)的失调与非小细胞肺癌(NSCLC)的进展有关。本研究旨在探讨长基因间非蛋白编码RNA 174 (LINC00174)在非小细胞肺癌中的作用。材料与方法本实验采用逆转录-定量聚合酶链反应(RT-qPCR)检测LINC00174在NSCLC组织和细胞系中的表达。细胞计数试剂盒-8 (CCK-8), 5-溴-2'-脱氧尿苷(BrdU)。采用Transwell和流式细胞术检测LINC00174对非小细胞肺癌细胞生长、迁移和凋亡的调控作用。生物信息学分析、双荧光素酶报告基因试验和RNA免疫沉淀(RIP)试验分别预测并验证了LINC00174与miR-31-5p、miR-31-5p与大肿瘤抑制激酶2 (LATS2) 3′-未翻译区(3′UTR)的靶向关系。Western blotting检测LINC00174和miR-31-5p对LATS2蛋白表达的调控作用。结果与正常肺组织相比,LINC00174在非小细胞肺癌组织和细胞系中的表达降低。LINC00174的表达与患者TNM分期呈负相关。功能实验表明,LINC00174过表达抑制非小细胞肺癌细胞增殖和迁移,诱导细胞凋亡。此外,LINC00174靶向miR-31-5p并抑制其表达。此外,LINC00174通过竞争性结合miR-31-5p上调LATS2的表达。结论LINC00174作为一种竞争性内源性RNA,通过吸附miR-31-5p提高LATS2的表达,从而抑制NSCLC细胞的活力和迁移,促进细胞凋亡。
{"title":"LINC00174 Suppresses Non-Small Cell Lung Cancer Progression by Up-Regulating LATS2 via Sponging miR-31-5p","authors":"Xu Cheng, Mali Sha, Wen-yang Jiang, Lin-Yu Chen, Mei-hua Song","doi":"10.22074/cellj.2022.7991","DOIUrl":"https://doi.org/10.22074/cellj.2022.7991","url":null,"abstract":"Objective Dysregulation of long non-coding RNAs (lncRNAs) is associated with the progression of non-small cell lung cancer (NSCLC). This study aimed to investigate the role of long intergenic non-protein coding RNA 174 (LINC00174) in NSCLC. Materials and Methods In this experimental study, LINC00174 expression in NSCLC tissues and cell lines was investigated by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Besides, cell counting kit-8 (CCK-8), 5-bromo-2'-deoxyuridine (BrdU). Transwell and Flow Cytometry assays were applied to detect the regulatory function of LINC00174 on the growth, migration and apoptosis of NSCLC cells. Bioinformatics analysis, dual luciferase reporter gene assay and RNA immunoprecipitation (RIP) assay predicted and verified the targeting relationship between LINC00174 and miR-31-5p, and between miR-31-5p and the 3´-untranslated region (3´UTR) of large tumor suppressor kinase 2 (LATS2), respectively. Western blotting was performed to detect the regulatory function of LINC00174 and miR-31-5p on LATS2 protein expression. Results Compared with that in normal lung tissues, LINC00174 expression in NSCLC tissues and cell lines was reduced. LINC00174 expression was negatively associated with the TNM stage of the patients. Functional experiments showed that LINC00174 overexpression inhibited NSCLC cell multiplication and migration, and induced apoptosis. Furthermore, LINC00174 targeted miR-31-5p and repressed its expression. Additionally, LINC00174 upregulated LATS2 expression through competitively binding to miR-31-5p. Conclusion LINC00174, as a competitive endogenous RNA, elevates LATS2 expression by adsorbing miR-31-5p, thereby inhibiting the viability and migration of NSCLC cells, and promoting apoptosis.","PeriodicalId":9692,"journal":{"name":"Cell Journal (Yakhteh)","volume":"18 1","pages":"140 - 147"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84475266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Hypothyroidism and Fertility: An Animal Model follows up in The Second-Generation 甲状腺功能减退与生育:第二代动物模型的后续研究
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.8054
Faezeh Panahandeh, Farideh Feizi, M. Pourghasem, Sorya Khafri, Z. Abedian, Kaveh Pourghasem, Zohre Esmaeili
Objective Hypothyroidism is known as the most common endocrine disorder. The prevalence of hypothyroidism in the female and male population is 2% and 0.2%, respectively. Maternal hypothyroidism is a defect in the thyroid hormones transition from the mother to the fetus. The present study was conducted to find whether maternal hypothyroidism affects the fertility of the second generation. Materials and Methods In this experimental study, twelve adult female rats weighting 180-220 g were randomly divided into case and control groups. Hypothyroidism was induced by dissolving 0.1 g/L of 6-n-propyl-2-thiouracil in drinking water toward the end of pregnancy and lactation. At the end of the breastfeeding period, the blood samples of female children were collected. Six healthy, mature, female rats were selected and kept until they reached maturity, and were then mated with male rats. After observing the female rats’ delivery, blood samples were collected from their male and female newborns and the healthy rats were selected. Results There was a significant difference in the volume and size of ovarian as well as in the number of secondary follicles in comparison with the control group (P=0.025). However, there were no significant changes in the other parameters including the number of primary follicles, the number of Graafian follicles and sperm parameters. There was no significant decrease in the testicular volume and size, number of Leydig cells and seminiferous tubules diameter. Conclusion Maternal hypothyroidism has no significant effects on testicular tissue function, and sperm parameters in the second generation, but can significantly reduce the rate of secondary follicles in the second generation female rats.
目的甲状腺功能减退症是最常见的内分泌疾病。甲状腺功能减退症在女性和男性人群中的患病率分别为2%和0.2%。母体甲状腺功能减退症是一种甲状腺激素从母体向胎儿转移的缺陷。本研究旨在探讨母亲甲状腺功能减退是否会影响第二代的生育能力。材料与方法选用体重180 ~ 220 g的成年雌性大鼠12只,随机分为病例组和对照组。将0.1 g/L的6-n-丙基-2-硫尿嘧啶溶解于妊娠末期和哺乳期的饮用水中,诱导甲状腺功能减退。在母乳喂养期结束时,采集女婴的血液样本。选择6只健康、成熟的雌性大鼠,饲养至成年,然后与雄性大鼠交配。观察雌性大鼠分娩后,分别采集雄性和雌性新生大鼠的血样,选取健康大鼠。结果治疗组卵巢体积、大小及次卵泡数与对照组比较差异有统计学意义(P=0.025)。然而,其他参数包括原发性卵泡数、Graafian卵泡数和精子参数均无显著变化。睾丸体积、大小、间质细胞数量、精小管直径均无明显减少。结论母体甲状腺功能减退对二代雌性大鼠睾丸组织功能及精子参数无明显影响,但可显著降低二代雌性大鼠的二次卵泡率。
{"title":"Hypothyroidism and Fertility: An Animal Model follows up in The Second-Generation","authors":"Faezeh Panahandeh, Farideh Feizi, M. Pourghasem, Sorya Khafri, Z. Abedian, Kaveh Pourghasem, Zohre Esmaeili","doi":"10.22074/cellj.2022.8054","DOIUrl":"https://doi.org/10.22074/cellj.2022.8054","url":null,"abstract":"Objective Hypothyroidism is known as the most common endocrine disorder. The prevalence of hypothyroidism in the female and male population is 2% and 0.2%, respectively. Maternal hypothyroidism is a defect in the thyroid hormones transition from the mother to the fetus. The present study was conducted to find whether maternal hypothyroidism affects the fertility of the second generation. Materials and Methods In this experimental study, twelve adult female rats weighting 180-220 g were randomly divided into case and control groups. Hypothyroidism was induced by dissolving 0.1 g/L of 6-n-propyl-2-thiouracil in drinking water toward the end of pregnancy and lactation. At the end of the breastfeeding period, the blood samples of female children were collected. Six healthy, mature, female rats were selected and kept until they reached maturity, and were then mated with male rats. After observing the female rats’ delivery, blood samples were collected from their male and female newborns and the healthy rats were selected. Results There was a significant difference in the volume and size of ovarian as well as in the number of secondary follicles in comparison with the control group (P=0.025). However, there were no significant changes in the other parameters including the number of primary follicles, the number of Graafian follicles and sperm parameters. There was no significant decrease in the testicular volume and size, number of Leydig cells and seminiferous tubules diameter. Conclusion Maternal hypothyroidism has no significant effects on testicular tissue function, and sperm parameters in the second generation, but can significantly reduce the rate of secondary follicles in the second generation female rats.","PeriodicalId":9692,"journal":{"name":"Cell Journal (Yakhteh)","volume":"23 1","pages":"148 - 154"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85292865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of The Retinal Progenitor Cells Generated Using Co-Culture Systems 用共培养系统产生的视网膜祖细胞的特性
Pub Date : 2022-03-01 DOI: 10.22074/cellj.2022.7764
Sara Momenzadeh, F. Karamali, A. Atefi, M. Nasr-Esfahani
Objective Degeneration of the photoreceptors due to retinal disorders can affect vision, and even lead to blindness. Recently therapeutic progress in retinal degeneration, using human embryonic stem cells (hESCs), has been facing technical challenges, demanding the development of simple and standardized protocols. In addition to the designing of the protocols, characterization of the obtained cells is highly required for confirming the reliability of the applied methods for future medical applications. Previously, we showed that human stem cells from apical papilla (SCAP) have stromal cell-derived inducing activity (SDIA). Materials and Methods In this experimental study, we developed an efficient retinal differentiation protocol, based on the co-culture of confluent hESCs and SCAP in the absence of exogenous molecules, such as activators or inhibitors of molecular signaling pathways. This experimental procedure resulted in the generation of self-forming neural retina (NR)-like structures containing retinal progenitor cells (RPCs) within 4 weeks. Results We have focused on the characterization of the derived RPCs, as a crucial step towards further verification of the efficiency of our previously suggested protocol. The differentiated cells expressed eye-field markers, PAX6, RAX, LHX2, and SIX3, and also generated neurospheres by a floating culture system for one week. Conclusion We have reported that the treatment of hESC-derived RPCs by the Notch pathway-inhibitor induced the generation of photoreceptor precursor cells (PPCs). The presented method demonstrates the fact that a co-culture of hESCs and SCAP without exogenous molecules provides an efficient approach to produce RPCs for the treatment of retinal disease, and act as an in vitro model for the development of human retina.
目的视网膜病变引起的光感受器变性可影响视力,甚至导致失明。近年来,利用人类胚胎干细胞(hESCs)治疗视网膜变性的进展一直面临着技术挑战,需要制定简单和标准化的方案。除了方案的设计之外,对获得的细胞进行表征是非常必要的,以确认所应用方法在未来医学应用中的可靠性。在此之前,我们已经证明了人类根尖乳头(SCAP)干细胞具有基质细胞衍生诱导活性(SDIA)。在本实验研究中,我们开发了一种高效的视网膜分化方案,基于融合hESCs和SCAP共同培养,在缺乏外源分子(如分子信号通路的激活剂或抑制剂)的情况下。该实验过程在4周内产生了含有视网膜祖细胞(rpc)的自形成神经视网膜(NR)样结构。我们专注于衍生rpc的表征,作为进一步验证我们先前建议的方案效率的关键一步。分化后的细胞表达视野标记物PAX6、RAX、LHX2和SIX3,并在漂浮培养系统中产生神经球一周。结论Notch通路抑制剂处理hesc来源的RPCs可诱导光受体前体细胞(PPCs)的生成。该方法表明,无外源分子的hESCs和SCAP共培养提供了一种有效的方法来产生用于治疗视网膜疾病的rpc,并作为人类视网膜发育的体外模型。
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引用次数: 1
Mesenchymal Stromal Cell Therapy Improves Refractory Perianal Fistula in Crohn’s Disease: Case Series Clinical Interventional Study 间充质间质细胞治疗可改善克罗恩病难治性肛周瘘:病例系列临床介入研究
Pub Date : 2022-02-01 DOI: 10.22074/cellj.2022.7981
Massoud Vosough, Sepideh Nikfam, S. Torabi, Bahareh Sadri, H. Ahmadi Amoli, A. Basi, M. Niknejadi, N. Hossein-khannazer, S. Hosseini, S. Mardpour, V. Azimian, N. Jaroughi, N. Aghdami, Hamid Reza Amirzehni, Amir Anushirvani, R. Malekzadeh, H. Baharvand, M. Mohamadnejad
Objective Perianal fistulas in Crohn’s disease (CD) are the main challenges in inflammatory bowel diseases (IBDs). Some of the fistulas are refractory to any therapeutic strategy. The aim of this study was to evaluate the therapeutic effects of mesenchymal stromal cells (MSCs) as a novel promising modality for the treatment of fistulizing CD. Materials and Methods This case series clinical interventional study was conducted from 2014 to 2017 at Shariati Hospital, an IBD referral center in Tehran, Iran. Refractory adult patients with CD who had draining perianal fistulas were enrolled in this study. All patients were examined by a colorectal surgeon and the fistula imaging studies were performed by pelvic magnetic resonance imaging (MRI). After autologous bone marrow (BM) aspiration and MSCs isolation, the cells were cultured and passaged under current good manufacturing practice (cGMP) conditions. Four intra-fistula injections of cells, each containing 40×106 MSCs suspended in fibrin glue, were administered by an expert surgeon every 4 weeks. Procedure safety, feasibility and closure of the perianal fistulas at week 24 were assessed. Clinical examination and MRI findings were considered as the primary end points. Results In total, 5 patients (2 males and 3 females) were enrolled in this study. No adverse events were observed during the six-month follow-up in these patients. Both the Crohn’s Disease Activity Index (CDAI) and Perianal Disease Activity Index (PDAI) scores decreased in all patients after cell injections and one patient achieved complete remission with closure of fistulas, discontinuation of fistula discharge, and closure of the external opening. Conclusion Local injection of MSCs combined with fibrin glue is potentially a safe and effective therapeutic approach for complex perianal fistulas in patients with CD.
目的克罗恩病(CD)的肛周瘘是炎症性肠病(IBDs)的主要挑战。有些瘘管对任何治疗策略都是难治的。本研究的目的是评估间充质间质细胞(MSCs)作为治疗瘘管性CD的一种有前景的新方式的治疗效果。材料和方法本病例系列临床介入研究于2014年至2017年在伊朗德黑兰的IBD转诊中心Shariati医院进行。本研究纳入了难治性成年乳糜泻伴引流肛周瘘管患者。所有患者均由结直肠外科医生检查,并通过盆腔磁共振成像(MRI)进行瘘管成像研究。在自体骨髓(BM)抽吸和MSCs分离后,在现行良好生产规范(cGMP)条件下培养和传代细胞。由专家外科医生每4周给予4次瘘内细胞注射,每个细胞含有悬浮在纤维蛋白胶中的40×106间充质干细胞。评估手术的安全性、可行性和第24周肛周瘘管的闭合情况。临床检查和MRI结果被认为是主要终点。结果共纳入5例患者(男2例,女3例)。在六个月的随访期间,未观察到这些患者的不良事件。细胞注射后,所有患者的克罗恩病活动性指数(CDAI)和肛周疾病活动性指数(PDAI)评分均下降,1例患者通过关闭瘘管、停止瘘管排出和关闭外部开口实现完全缓解。结论局部注射骨髓间充质干细胞联合纤维蛋白胶治疗CD患者复杂肛周瘘是一种安全有效的治疗方法。
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引用次数: 0
Differentiation of Human Wharton's Jelly Mesenchymal Stem Cells into SOX17 Expressing Cells Using a Wnt/ß-catenin Pathway Agonist on Polylactic Acid/Chitosan Nanocomposite Scaffold Wnt/ß-catenin通路激动剂在聚乳酸/壳聚糖纳米复合支架上诱导人Wharton’s Jelly间充质干细胞向表达SOX17的细胞分化
Pub Date : 2022-02-01 DOI: 10.22074/cellj.2022.7622
E. Hoveizi, Shima Tavakol
Objective The β-catenin signaling pathway promises the potential for differentiation of stem cells into definitive endoderm (DE) cells as precursors of beta cells. Therefore, it can be considered as an inducer for cell replacement therapies in diabetes. The main goal of this research is to successfully culture and induce differentiation of human Wharton’s jelly mesenchymal stem cells (hWJMSCs) into Sox17-expressing cells using a Wnt/β-catenin pathway agonist (SKL2001) plus nanoparticles on a polylactic acid/chitosan (PLA/Cs) nanocomposite scaffold. Materials and Methods In this experimental study, the nanocomposite was prepared through an electrospinning method and hWJMSCs were isolated through an explant technique. The morphology and the cell viability were evaluated by scanning electron microscopy (SEM) and 3-(4, 5- Dimethylthiazol-2)-2, 5-diphenyltetrazolium bromide (MTT) assay. Here, we present two differentiation protocols: the first one is induction with SKL2001; and the second one is with a combination of SKL2001 and zinc oxide nanoparticles (nZnO). Real-time quantitative reverse transcription (QRT-PCR) and immunocytochemistry analysis are carried out to examine the expression of specific markers in the differentiated cells. Results The nanocomposite had appropriate biocompatibility for cell adhesion and growth. While the hWJMSCs cultured on the PLA/Cs scaffolds differentiated into DE cells in the presence of SKL2001, introducing nZnO to their environment increased the differentiation process. Analyses of DE-specific markers including SOX17, FOXA2, and gooscoid (GSC) genes in mRNA level, indicated significantly high levels of expression in the SKL2001/nZnO group, followed by SKL2001 group compared to the control. Conclusion Our results show the beneficial effects of the Wnt/β-catenin pathway agonist in three-dimensional (3D) cultures in cell replacement therapy for diabetes.
目的β-catenin信号通路作为β细胞的前体,预示着干细胞向最终内胚层(DE)细胞分化的潜力。因此,它可以被认为是糖尿病细胞替代疗法的诱导剂。本研究的主要目标是利用Wnt/β-catenin通路激动剂(SKL2001)和纳米颗粒在聚乳酸/壳聚糖(PLA/Cs)纳米复合支架上成功培养和诱导人类沃顿氏果冻间充质干细胞(hWJMSCs)分化为表达sox17的细胞。材料与方法本实验采用静电纺丝法制备纳米复合材料,采用外植体技术分离hWJMSCs。采用扫描电镜(SEM)和3-(4,5 -二甲基噻唑-2)- 2,5 -二苯基溴化四唑(MTT)法观察细胞形态和细胞活力。在此,我们提出了两种分化方案:第一种是用SKL2001诱导;第二种是SKL2001与氧化锌纳米颗粒(nZnO)的结合。通过实时定量反转录(QRT-PCR)和免疫细胞化学分析来检测分化细胞中特异性标志物的表达。结果纳米复合材料具有良好的生物相容性,有利于细胞粘附和生长。而在PLA/Cs支架上培养的hWJMSCs在SKL2001存在的情况下向DE细胞分化,在其环境中引入nZnO可促进其分化过程。对de特异性标记SOX17、FOXA2和gooscoid (GSC)基因mRNA水平的分析显示,SKL2001/nZnO组的表达水平显著高于对照组,其次是SKL2001组。结论三维培养中Wnt/β-catenin通路激动剂对糖尿病细胞替代治疗的有益作用。
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引用次数: 1
Ribosome Profiling: A Useful Approach to Discover Hidden Corners of SARS-CoV-2 核糖体分析:发现SARS-CoV-2隐藏角落的有用方法
Pub Date : 2022-02-01 DOI: 10.22074/cellj.2022.8387
Milad Zandi, Emad Behboudi, Parisa Zeinali, S. Soltani, M. Shojaei
Following SARS-CoV-2 China epidemic in the December 2019, researches have attended to the genome of novel coronavirus. Hidden corners of SARS-CoV-2, maybe a shiny way to discover its pathogenicity and virulence. To design therapeutic agents, it is critical to map the complete repertoire of viral-translated proteins. Ribosome profiling is considered as a snapshot of all active ribosomes in a cell at a specific time point.
2019年12月中国新冠肺炎疫情爆发后,人们开始关注新型冠状病毒基因组。SARS-CoV-2的隐藏角落,也许是发现其致病性和毒性的闪亮方式。为了设计治疗剂,绘制病毒翻译蛋白的完整库是至关重要的。核糖体分析被认为是在特定时间点细胞中所有活性核糖体的快照。
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引用次数: 0
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Cell Journal (Yakhteh)
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