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501.
《Molecular therapy》2023,31(5):1332-1345
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502.
目的 基于前期研究证实温和灸联合骨髓间充质干细胞(bone marrow mesenchymal stem cell,BMSC)移植可协同促进大鼠损伤肛门括约肌结构和功能修复的基础,探索协同修复效果是涉及Wnt/β-catenin通路,及BMSC源性外泌体对C212成肌细胞的影响。方法 将16只SD大鼠随机等分4组,所有大鼠均采用Zutshi大鼠肛门括约肌复合体损伤模型,造模成功后分别采用温和灸30 min、BMSC移植及生理盐水治疗,连续14 d。治疗结束后剥离肛门括约肌后采用q PCR和Western blot检测组间Wnt4、Wnt5a、Wnt5b蛋白表达差异。将BMSC源性外泌体与小鼠成肌细胞C2C12共培养后采用EDU及CCK8检测BMSC外泌体对C2C12细胞增殖作用,探索不同浓度外泌体对BMSC增殖的差异。流式细胞术检测BMSC源性外泌体对C2C12细胞周期的影响。结果 免疫印迹和qPCR分析结果提示温和灸联合BMSC移植可促进Wnt4、Wnt5A、Wnt5B高表达。CCK8结果显示BMSC源性外泌体可促进C2C12细胞的增殖,在浓度为25μg/mL时疗效最佳。共培养结果... 相似文献
503.
Tian-Zhong Hou Hui-Min Yang Yun-Zhong Cheng Li Gu Jian-Nan Zhang Hong Zhang 《Molecular carcinogenesis》2023,62(8):1163-1175
Numerous epidemiological studies suggest a link between Parkinson's disease (PD) and cancer. However, their relevant pathogenesis is not clear. In the present study, we investigated the potential role of exosome-delivered α-synuclein (α-syn) in the regulation between PD and liver cancer. We cultured hepatocellular carcinoma (HCC) cells with exosomes derived from conditioned medium of the PD cellular model, and injected exosomes enriched with α-syn into the striatum of a liver cancer rat model. We found that α-syn-contained exosomes from the rotenone-induced cellular model of PD suppressed the growth, migration, and invasion of HCC cells. Integrin αVβ5 in exosomes from the rotenone-induced PD model was higher than that in the control, resulting in more α-syn-contained exosomes being taken up by HCC cells. Consistently, in vivo experiments with rat models also confirmed exosome-delivered α-syn inhibited liver cancer. These findings illustrate the important role of PD-associated protein α-syn inhibiting hepatoma by exosome delivery, suggesting a new mechanism underlying the link between these two diseases and therapeutics of liver cancer. 相似文献
504.
Yalda Khazaei-Poul Seyed Amir Mirmotalebisohi Hakimeh Zali Zahra Molavi Samira Mohammadi-Yeganeh 《Chemical biology & drug design》2023,101(3):662-677
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer with a poor prognosis, lacking therapeutic targets. miRNAs play crucial roles in TNBC through regulating various mechanisms, including cellular growth and proliferation. This study aims to identify critical target genes of two novel miRNAs (miR-3143 and miR-3182) involved in the cell cycle of TNBC as possible therapeutic targets and investigates their regulatory and therapeutic roles through a systems biology approach and in vitro experiment. Datasets related to the TNBC cell line (MDA-MB-231) were screened and retrieved, and Gene regulatory networks were constructed. Significant regulatory motifs were detected and analyzed using the FANMOD and Cytoscape analyzer, and the clusters and seeds were identified using the MCODE. Functional enrichment analysis was also performed using DAVID and STRING. The most critical genes were determined using the analysis of GRN motifs and PPI clusters. The essential genes involved in the cell cycle were selected and verified using the bc-GenExMiner v4.7. We overexpressed miR-3143 and miR-3182 in the MDA-MB-231 cell line using human umbilical cord mesenchymal stem cell (HUCMSC)-miRNA loaded exosomes, and the expression of the critical target genes was investigated using RT-qPCR. We identified eight critical genes as potential therapeutic targets. Their expression decreased by overexpression of miR-3143 and miR-3182 in RT-qPCR. The identified critical genes have probably significant roles in the pathogenesis of TNBC through the cell cycle. We suggest that the overexpression of miR-3143 and miR-3182 could be a new therapeutic candidate in TNBC and is worth more investigation. 相似文献
505.
Libin Yan Siyue Liu Guoliang Sun Beichen Ding Zhize Wang Heng Li 《Molecular carcinogenesis》2023,62(11):1770-1781
SET domain-containing 2 (SETD2) is the most frequently mutated gene among all the histone methyltransferases in clear cell renal cell carcinoma (ccRCC). Microarrays, RNA sequencing analysis and exosomes analysis of cellular supernatant were performed after transfection A498 cells with si-SETD2 or siRNA of negative control. Chromatin immunoprecipitation and Luciferase reporter assay were conducted to evaluate the interaction between SETD2 and miR-10b. Functional and drug experiments in vitro and in vivo were performed to verify the role of SETD2, miR-10b and MAP4K4. The results showed that loss of SETD2 mediated downregulation of intracellular and exosomal microRNA-10b. MAP4K4 were relevant to oncogenesis of ccRCC caused by loss of SETD2 and miR-10b. SETD2 could directly target miR-10b and regulate the expression of multidrug resistance (MDR)-1 (P-gp170) through JNK pathway, which was one of the downstream pathways of MAP4K4. The coordinated expression of SETD2/H3K36me3/miR-10b/MAPKs/JNK/MDR pathway was revealed to the progression of ccRCC. 相似文献
506.
Aims
To investigate the role of exosomal miR-128-3p in promoting fibrinogen-mediated inhibition of oligodendrocyte progenitor cell (OPC) differentiation and the therapeutic potential of exosomal miR-128-3p in cerebral ischemia.Methods
Mouse models of middle cerebral artery occlusion (MCAO) were established as described previously. MCAO was treated with fibrinogen and exosomes by stereotactically injecting into the left stratum. Mouse cortical OPCs were used for mRNA and miRNA sequencing analysis. Exosomes were isolated from neural stem cells (NSCs) of mice.Results
Fibrinogen deposition suppressed remyelination after MCAO and inhibited OPC differentiation by activating ACVR1, the bone morphogenetic protein (BMP) signaling type I receptor. In vitro, miR-sequencing and verification studies revealed that miR-128-3p is associated with BMP signaling mediated by ACVR1. Additionally, transfer of NSC-derived exosomal miR-128-3p to OPCs significantly increased myelin basic protein expression and inhibited BMP signaling. Furthermore, NSC-derived exosomal miR-128-3p protected against fibrinogen-induced demyelination related to BMP signaling, reduced the infarct volume, and improved neurological function after MCAO.Conclusions
Fibrinogen deposition inhibits remyelination after ischemic damage and NSC-derived exosomal miR-128-3p promotes OPC differentiation into OLs by suppressing BMP signaling, indicating that NSC-derived exosomal miR-128-3p represents a potential therapeutic target for ischemic stroke. 相似文献507.
508.
Li Zhang Yixing Lin Wanshan Bai Lean Sun Mi Tian 《CNS Neuroscience & Therapeutics》2023,29(8):2236-2258
Aims
Recently, human umbilical cord mesenchymal stem cell (HucMSC)-derived exosome is a new focus of research in neurological diseases. The present study was aimed to investigate the protective effects of HucMSC-derived exosome in both in vivo and in vitro TBI models.Methods
We established both mouse and neuron TBI models in our study. After treatment with HucMSC-derived exosome, the neuroprotection of exosome was investigated by the neurologic severity score (NSS), grip test score, neurological score, brain water content, and cortical lesion volume. Moreover, we determined the biochemical and morphological changes associated with apoptosis, pyroptosis, and ferroptosis after TBI.Results
We revealed that treatment of exosome could improve neurological function, decrease cerebral edema, and attenuate brain lesion after TBI. Furthermore, administration of exosome suppressed TBI-induced cell death, apoptosis, pyroptosis, and ferroptosis. In addition, exosome-activated phosphatase and tensin homolog-induced putative kinase protein 1/Parkinson protein 2 E3 ubiquitin–protein ligase (PINK1/Parkin) pathway-mediated mitophagy after TBI. However, the neuroprotection of exosome was attenuated when mitophagy was inhibited, and PINK1 was knockdown. Importantly, exosome treatment also decreased neuron cell death, suppressed apoptosis, pyroptosis, and ferroptosis and activated the PINK1/Parkin pathway-mediated mitophagy after TBI in vitro.Conclusion
Our results provided the first evidence that exosome treatment played a key role in neuroprotection after TBI through the PINK1/Parkin pathway-mediated mitophagy. 相似文献509.
Jing Ni Ju Zhang Jiatao Liu Lulu Fan Xiao Lin Hanqing Yu Guoping Sun 《Hematological oncology》2023,41(1):61-70
Endoplasmic reticulum (ER) stress has been reported to be transmitted from tumor cells to immune cells via exosome and implicated in immune escape. However, the influence of ER stress on monocytes in chronic lymphocytic leukemia (CLL) cells is largely unknown. Here, we observed the expression of ER stress markers (GRP78, ATF6, PERK, IRE1a, and XBP1s) in CLL cells. The increasing mRNA expression of these ER stress response components was positively correlated with more aggressive disease. Exosome from ER stress inducer tunicamycin (TM)-primed CLL cells (ERS-exo) up-regulated the expression of ER stress marker on monocytes, indicating ER stress is transmissible in vitro via exosome. Treatment with ERS-exo promoted the survival of monocytes and induced phenotypic changes with a significantly larger percentage of CD14+CD16+monocytes. Finally, we identified exosome-mediated transfer of extracellular nicotinamide phosphoribosyltransferase (eNAMPT) from ER stressed CLL cells into monocytes as a novel mechanism through which ERS-exo regulated monocytes. Exosomal eNAMPT up-regulated nicotinamide adenine dinucleotide (NAD+) production which subsequently activated SIRT1-C/EBPβ signaling pathway in monocytes. Our results suggest the role of ER stress in mediating immunological dysfunction in CLL. 相似文献
510.
Guiyue Wang MM Zhili Wang MM Jiaqi Zhang MM Yan Shen MM Xin Hou MM Lin Su MM Wen Chen MM Jiahao Chen MM Xiang Guo MM Hong Song MD 《Journal of Cosmetic Dermatology》2023,22(11):2996-3007