GATA3 Transcription Factor

GATA3 转录因子
  • 文章类型: Journal Article
    Behçet病(BD)是一种影响多器官系统的多方面自身免疫性疾病。血管并发症,如静脉血栓栓塞(VTE),非常普遍,影响约50%的被诊断患有BD的个体。本研究旨在确定BD患者VTE的潜在生物标志物。检索三个微阵列数据集(GSE209567、GSE48000、GSE19151)用于分析。使用Limma包和加权基因共表达网络分析(WGCNA)鉴定了BD中与VTE相关的差异表达基因(DEGs)。随后,通过蛋白质-蛋白质相互作用(PPI)网络分析和机器学习算法探索潜在的诊断基因.构建受试者工作特征(ROC)曲线和列线图以评估BD患者对VTE的诊断性能。此外,我们进行了免疫细胞浸润分析和单样本基因集富集分析(ssGSEA),以研究潜在的潜在机制.最后,所列药物的疗效是根据所鉴定的特征基因进行评估的.Limma包和WGCNA确定了与BD中VTE相关的117个DEG。然后通过PPI网络分析选择了23个候选集线器基因。通过使来自三种机器学习算法的基因集相交来鉴定四个DEGs(E2F1、GATA3、HDAC5和MSH2)。ROC分析和列线图构建显示了这四个基因的高诊断准确性(AUC:0.816,95%CI:0.723-0.909)。免疫细胞浸润分析显示,失调的免疫细胞与四个hub基因之间呈正相关。ssGSEA提供了对BD患者VTE发展和进展的潜在机制的见解。此外,治疗剂筛选确定了靶向四个hub基因的潜在药物。这项研究采用了系统的方法来鉴定四个潜在的hub基因(E2F1,GATA3,HDAC5和MSH2),并构建了用于BD中VTE诊断的列线图。免疫细胞浸润分析显示失调,提示潜在的巨噬细胞参与VTE的发展。ssGSEA提供了对BD诱导的VTE潜在机制的见解,并确定了潜在的治疗药物。
    Behçet\'s disease (BD) is a multifaceted autoimmune disorder affecting multiple organ systems. Vascular complications, such as venous thromboembolism (VTE), are highly prevalent, affecting around 50% of individuals diagnosed with BD. This study aimed to identify potential biomarkers for VTE in BD patients. Three microarray datasets (GSE209567, GSE48000, GSE19151) were retrieved for analysis. Differentially expressed genes (DEGs) associated with VTE in BD were identified using the Limma package and weighted gene co-expression network analysis (WGCNA). Subsequently, potential diagnostic genes were explored through protein-protein interaction (PPI) network analysis and machine learning algorithms. A receiver operating characteristic (ROC) curve and a nomogram were constructed to evaluate the diagnostic performance for VTE in BD patients. Furthermore, immune cell infiltration analyses and single-sample gene set enrichment analysis (ssGSEA) were performed to investigate potential underlying mechanisms. Finally, the efficacy of listed drugs was assessed based on the identified signature genes. The limma package and WGCNA identified 117 DEGs related to VTE in BD. A PPI network analysis then selected 23 candidate hub genes. Four DEGs (E2F1, GATA3, HDAC5, and MSH2) were identified by intersecting gene sets from three machine learning algorithms. ROC analysis and nomogram construction demonstrated high diagnostic accuracy for these four genes (AUC: 0.816, 95% CI: 0.723-0.909). Immune cell infiltration analysis revealed a positive correlation between dysregulated immune cells and the four hub genes. ssGSEA provided insights into potential mechanisms underlying VTE development and progression in BD patients. Additionally, therapeutic agent screening identified potential drugs targeting the four hub genes. This study employed a systematic approach to identify four potential hub genes (E2F1, GATA3, HDAC5, and MSH2) and construct a nomogram for VTE diagnosis in BD. Immune cell infiltration analysis revealed dysregulation, suggesting potential macrophage involvement in VTE development. ssGSEA provided insights into potential mechanisms underlying BD-induced VTE, and potential therapeutic agents were identified.
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  • 文章类型: Journal Article
    我们旨在观察脂肪间充质干细胞(ADSCs)对原发性免疫性血小板减少症(ITP)模型小鼠辅助性T细胞17(Th17)/调节性T细胞(Treg)和T-box转录因子(T-bet)/GATA结合蛋白3(GATA-3)的影响。选择32只BALB/C小鼠。从2只小鼠中分离ADSCs并培养。将其他30只小鼠随机分为正常对照组,ITP模型对照组,和ITP实验组。血小板计数(PLT),Th17/Treg细胞,相关血清细胞因子[白细胞介素-6(IL-6),IL-17A,IL-10和转化生长因子β1(TGF-β1)],检测3组外周血单个核细胞(PBMC)中T-bet和GATA-3mRNA水平。ITP试验组PLT、Treg明显低于正常对照组(P<0.05),但明显高于ITP模型对照组(P<0.05)。ITP实验组Th17和Th17/Treg明显高于正常对照组(P<0.05),但明显低于ITP模型对照组(P<0.05)。血清IL-6和IL-17A水平,ITP实验组T-betmRNA水平明显高于正常对照组(P<0.05),但明显低于ITP模型对照组(P<0.05)。血清IL-10和TGF-β水平,ITP实验组GATA-3mRNA水平明显低于正常对照组(P<0.05),但明显高于ITP模型对照组(P<0.05)。ADSCs能有效调节ITP模型小鼠Th17/Treg平衡,提高T-bet/GATA-3mRNA表达水平。
    We aimed to observe the effects of adipose-derived mesenchymal stem cells (ADSCs) on T helper 17 (Th17)/regulatory T cells (Treg) and T-box transcription factor (T-bet)/GATA-binding protein 3 (GATA-3) in model mice with primary immune thrombocytopenia (ITP). 32 BALB/C mice were selected. ADSCs were isolated from 2 mice and cultured. The other 30 mice were randomly divided into the normal control group, the ITP model control group, and the ITP experimental group. Platelet count (PLT), Th17/Treg cells, related serum cytokines [interleukin-6 (IL-6), IL-17A, IL-10, and transforming growth factor β1 (TGF-β1)], T-bet and GATA-3 mRNA levels in peripheral blood mononuclear cells (PBMCs) in the 3 groups were detected. PLT and Treg in the ITP experimental group were significantly lower than those in the normal control group (P<0.05), but significantly higher than those in the ITP model control group (P<0.05). Th17 and Th17/Treg in the ITP experimental group were significantly higher than those in the normal control group (P<0.05), but significantly lower than those in the ITP model control group (P<0.05). Serum IL-6 and IL-17A levels, and T-bet mRNA levels in the ITP experimental group were significantly higher than those in the normal control group (P<0.05), but significantly lower than those in the ITP model control group (P<0.05). Serum IL-10 and TGF-β levels, and GATA-3 mRNA levels in the ITP experimental group were significantly lower than those in the normal control group (P<0.05), but significantly higher than those in the ITP model control group (P<0.05). ADSCs can effectively regulate Th17/Treg balance and improve T-bet/GATA-3 mRNA expression levels in ITP model mice.
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  • 文章类型: Journal Article
    OBJECTIVE: To observe effects of acupuncture at \"Die E acupoint\" on the protein expression levels of Toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88), nuclear transcription factor κB (NF-κB), transcription factor T-bet (T-bet), and GATA-binding protein-3 (GATA-3) in the nasal mucosa and the serum contents of related inflammatory cytokines in rats with allergic rhinitis, so as to explore the mechanism of acupuncture in treating allergic rhinitis.
    METHODS: Twenty-four healthy SD rats were randomly divided into blank, model, acupuncture, and sham acupuncture groups, with 6 rats in each group. The rat model of allergic rhinitis was established by using ovalbumin induction. The rats in the acupuncture group received bilateral acupuncture at the \"Die E acupoint\" with a depth of 15-20 mm, while the rats in the sham acupuncture group received only sham acupuncture (light and shallow acupunture of the skin at the \"Die E acupoint\" ). Both interventions were performed once daily for a total of 6 days. Behavioral scores of rats in each group were recorded. Pathological changes of nasal mucosa were observed by H.E. staining. Serum contents of IgE, ovalbumin-specific IgE (OVA-sIgE), interferon(IFN)-γ, interleukin(IL)-4, IL-10 and IL-17 were measured by ELISA and the protein expression levels of T-bet, GATA-3, TLR4, MyD88 and NF-κB p65 in the nasal mucosa were detected by Western blot.
    RESULTS: After modeling, compared with the blank group, rats in the model group showed increased behavioral scores, serum IgE, OVA-sIgE, IL-4, and IL-17 contents, and nasal mucosal GATA-3, TLR4, MyD88, and NF-κB p65 protein expression levels (P<0.05), whereas the contents of serum IFN-γ, IL-10 and the protein expression level of T-bet in the nasal mucosa were decreased (P<0.05). Comparison between the EA and model groups showed that acupuncture intervention can decrease the behavioral scores of rats with allergic rhinitis, the contents of serum IgE, OVA-sIgE, IL-4, IL-17, and the protein expression levels of GATA-3, TLR4, MyD88, and NF-κB p65 in the nasal mucosa (P<0.05), and up-regulate the contents of serum IFN-γ, IL-10, and the nasal mucosal T-bet protein expression level. Sham acupuncture did not have a significant modulating effect on the above indicators. Inflammatory infiltration of nasal mucosa was seen in the model group and sham acupuncture, and the inflammatory reaction was milder in the acupuncture group.
    CONCLUSIONS: Acupuncture at \"Die E acupoint\" can alleviate the symptoms of allergic rhinitis and suppress the inflammation of nasal mucosa in rats, which may be related to inhibiting the TLR4/MyD88/NF-κB signaling and balancing the levels of cytokines of Th1/Th2 and Treg/Th17, and T-bet/GATA-3.
    目的: 探讨针刺“蝶腭穴”对变应性鼻炎(AR)大鼠Toll样受体4(TLR4)、髓样分化因子88(MyD88)、核转录因子κB(NF-κB)、转录因子T-bet(T-bet)、GATA结合蛋白-3(GATA-3)的蛋白表达水平及相关炎性细胞因子的影响。方法: SD大鼠随机分为空白组、模型组、针刺组、假针刺组,每组6只。采用卵清蛋白诱导建立AR大鼠模型。针刺组大鼠行双侧“蝶腭穴”针刺,假针刺组仅行假针刺,均每日1次,共6次。记录各组大鼠行为学评分;HE染色法观察大鼠鼻黏膜形态变化;ELISA法检测大鼠血清免疫球蛋白E(IgE)、卵清蛋白特异性IgE(OVA-sIgE)、干扰素(IFN)-γ、白细胞介素(IL)-4、IL-10、IL-17的含量;Western blot法检测大鼠鼻黏膜中TLR4、MyD88、NF-κB p65、T-bet、GATA-3蛋白表达水平。结果: 与正常组比较,模型组行为学评分升高(P<0.05),血清IgE、OVA-sIgE、IL-4、IL-17的含量及鼻黏膜中GATA-3、TLR4、MyD88、NF-κB p65蛋白表达水平升高(P<0.05),血清IFN-γ、IL-10含量及鼻黏膜T-bet蛋白表达水平降低(P<0.05)。与模型组比较,针刺组行为学评分降低(P<0.05),血清IgE、OVA-sIgE、IL-4、IL-17的含量及鼻黏膜中GATA-3、TLR4、MyD88、NF-κB p65蛋白表达水平降低(P<0.05),血清IFN-γ、IL-10的含量及鼻黏膜T-bet蛋白表达水平升高(P<0.05);假针刺组以上指标差异均无统计学意义。模型组和假针刺组可见鼻黏膜炎性浸润,针刺组鼻黏膜炎性反应明显减轻。结论: 针刺“蝶腭穴”可减轻OVA诱导的AR大鼠的症状,改善鼻黏膜炎性反应,其机制可能与抑制TLR4/MyD88/NF-κB信号通路,有效调控Th1/Th2、Treg/Th17细胞因子及T-bet/GATA-3的平衡有关。.
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  • 文章类型: Journal Article
    滋养层干细胞(TSC)可以在体外从胚胎干细胞(ESC)化学转化。虽然几种转录因子(TF)已被认为是TSC形成所必需的,目前尚不清楚分化线索如何将干性的消除与TSC身份的建立联系起来。这里,我们证明了PRDM14,一个关键的多能电路组件,在TSC形成期间减少。进一步显示该减少是由于Wnt/β-连环蛋白信号的激活。PRDM14的消失导致TSCTFs基因位点的H3K27me3标记和染色质开放的擦除,包括GATA3和TFAP2C,这使得它们能够表达,从而启动TSC形成过程。因此,这里提出PRDM14减少是将干性的消除与TSC形成的开始相关联的关键事件。本研究提供了有关感应信号如何引发TSC形成的新见解。
    Trophoblast stem cells (TSCs) can be chemically converted from embryonic stem cells (ESCs) in vitro. Although several transcription factors (TFs) have been recognized as essential for TSC formation, it remains unclear how differentiation cues link elimination of stemness with the establishment of TSC identity. Here, we show that PRDM14, a critical pluripotent circuitry component, is reduced during the formation of TSCs. The reduction is further shown to be due to the activation of Wnt/β-catenin signaling. The extinction of PRDM14 results in the erasure of H3K27me3 marks and chromatin opening in the gene loci of TSC TFs, including GATA3 and TFAP2C, which enables their expression and thus the initiation of the TSC formation process. Accordingly, PRDM14 reduction is proposed here as a critical event that couples elimination of stemness with the initiation of TSC formation. The present study provides novel insights into how induction signals initiate TSC formation.
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  • 文章类型: Journal Article
    基质Gla蛋白(MGP)和1型三鼻咽综合征(TRPS1)最近已成为新的乳腺特异性免疫组织化学(IHC)标记,特别是三阴性乳腺癌(TNBC)和化生性癌。本研究旨在验证和比较MGP的表达,TRPS1和GATA结合蛋白3(GATA3)在转移性乳腺癌(MBC)中,具有特殊特征的浸润性乳腺癌(IBC),包括特殊类型的浸润性乳腺癌(IBC-STs)和具有独特特征的非特殊类型的浸润性乳腺癌,乳腺和非乳腺唾液腺型肿瘤(SGT)。在所有登记的病例中,MGP,TRPS1和GATA3对ER/PR阳性(p=0.148)和HER2阳性(p=0.310)乳腺癌(BC)具有相当高的阳性,而GATA3阳性在TNBC中显著降低(p<0.001)。同样,MBCs中MGP和TRPS1的阳性率(99.4%),高于GATA3(90.9%,p<0.001)。在IBC-ST中,98.4%的浸润性小叶癌(ILC)对所有三种标志物均为阳性。在神经内分泌肿瘤(NTs)中,所有病例的TRPS1和GATA3均为阳性,而MGP阳性相对较低(81.8%,p=0.313)。在神经内分泌癌(NC)亚组中,所有病例均为GATA3和MGP阳性,1例TRPS1阴性。所有伴有顶腺分泌分化(APO)的癌GATA3和MGP均为阳性,而仅60%的病例显示TRPS1中度染色。在乳腺SGT中,MGP表现出最高的积极性(100%),其次是TRPS1(96.0%)和GATA3(72.0%)。在非乳腺SGT中也经常观察到这些标记的阳性染色。我们的发现进一步验证了MGP和TRPS1在MBCs中的高灵敏度,IBC-ST,和乳房SGTs。然而,这些标记都不能区分乳腺和非乳腺SGT。
    Matrix Gla protein (MGP) and trichorhinophalangeal syndrome type 1 (TRPS1) have recently emerged as novel breast-specific immunohistochemical (IHC) markers, particularly for triple-negative breast cancer (TNBC) and metaplastic carcinoma. The present study aimed to validate and compare the expression of MGP, TRPS1 and GATA binding protein 3 (GATA3) in metastatic breast carcinoma (MBC), invasive breast carcinoma (IBC) with special features, including special types of invasive breast carcinoma (IBC-STs) and invasive breast carcinoma of no special type with unique features, and mammary and non-mammary salivary gland-type tumours (SGTs). Among all enrolled cases, MGP, TRPS1 and GATA3 had comparable high positivity for ER/PR-positive (p=0.148) and HER2-positive (p=0.310) breast carcinoma (BC), while GATA3 positivity was significantly lower in TNBC (p<0.001). Similarly, the positive rates of MGP and TRPS1 in MBCs (99.4%), were higher than in GATA3 (90.9%, p<0.001). Among the IBC-STs, 98.4% of invasive lobular carcinomas (ILCs) were positive for all three markers. Among neuroendocrine tumours (NTs), all cases were positive for TRPS1 and GATA3, while MGP positivity was relatively low (81.8%, p=0.313). In the neuroendocrine carcinoma (NC) subgroup, all cases were positive for GATA3 and MGP, while one case was negative for TRPS1. All carcinomas with apocrine differentiation (APOs) were positive for GATA3 and MGP, while only 60% of the cases demonstrated moderate staining for TRPS1. Among mammary SGTs, MGP demonstrated the highest positivity (100%), followed by TRPS1 (96.0%) and GATA3 (72.0%). Positive staining for these markers was also frequently observed in non-mammary SGTs. Our findings further validate the high sensitivity of MGP and TRPS1 in MBCs, IBC-STs, and breast SGTs. However, none of these markers are capable of distinguishing between mammary and non-mammary SGTs.
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  • 文章类型: Letter
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  • 文章类型: Journal Article
    放射诱发的肺纤维化(RIPF)通常是胸癌放射治疗后的延迟并发症。包括肺,乳房,和食道恶性肿瘤.以肺实质内细胞外基质(ECM)蛋白的无情和不可逆的积累为特征,RIPF提出了重大的临床挑战。虽然转录因子对基因表达的调节是各种病理中公认的方面,它们在RIPF背景下的具体作用还不太清楚。这项研究阐明了电离辐射促使转录因子GATA3易位到细胞核中。这种易位促进GATA3与NRP1启动子的结合,从而增强NRP1的转录和随后的翻译。进一步的研究表明,TGF-β途径激动剂,SRI-011381可以减轻NRP1敲低对上皮间质转化(EMT)和ECM沉积的影响,提示GATA3/NRP1/TGF-β轴在RIPF发病机制中的关键作用。总之,我们的研究结果不仅强调了GATA3在RIPF中的关键参与,而且还强调了GATA3/NRP1/TGF-β信号通路是RIPF管理中治疗干预的有希望的靶标.
    Radiation-Induced Pulmonary Fibrosis (RIPF) frequently arises as a delayed complication following radiation therapy for thoracic cancers, encompassing lung, breast, and esophageal malignancies. Characterized by a relentless and irreversible accumulation of extracellular matrix (ECM) proteins within the lung parenchyma, RIPF presents a significant clinical challenge. While the modulation of gene expression by transcription factors is a recognized aspect in various pathologies, their specific role in the context of RIPF has been less clear. This study elucidates that ionizing radiation prompts the translocation of the transcription factor GATA3 into the nucleus. This translocation facilitates GATA3\'s binding to the NRP1 promoter, thereby enhancing the transcription and subsequent translation of NRP1. Further investigations demonstrate that the TGF-β pathway agonist, SRI-011381, can mitigate the effects of NRP1 knockdown on epithelial-mesenchymal transition (EMT) and ECM deposition, suggesting a pivotal role of the GATA3/NRP1/TGF-β axis in the pathogenesis of RIPF. In conclusion, our findings not only underscore the critical involvement of GATA3 in RIPF but also highlight the GATA3/NRP1/TGF-β signaling pathway as a promising target for therapeutic intervention in RIPF management.
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  • 文章类型: Journal Article
    目的:Tricho-halinophalangeinsyndrome-1(TRPS1)已被提出作为一种新的乳腺标志物,在乳腺癌(BC)亚型中同样高表达。使其成为有用的诊断工具。这里,在大量BCs(n=1852)及其相应的淋巴结转移中,与其他常用标志物[GATA3,GCDFP15,乳腺球蛋白(MGB)和SOX10]一起评估其表达.评估了其作为诊断工具的有用性及其与临床病理特征的相关性。
    结果:TRPS1在BC队列中总体表达为75.8%,在BC亚型中至少有58%的表达。它对管腔和HER2过表达(HER2-OE)癌症的敏感性低于GATA3(管腔A:82对97%;管腔B:80对95%;HER2-OE:62对76%),但对TNBC最敏感(60对≤41%)。它在淋巴结转移中显示出稳定的表达(原发性肿瘤76与淋巴结转移78%),与GATA3的淋巴结表达减少不同(86对77%)。当与其他乳腺标记物配对时,TRPS1在检测非腔癌方面优于GATA3。TRPS1和GCDFP15是TNBC检测中最敏感的组合,检出率为76%。对于TRPS1阴性和GCDFP15阴性TNBC,SOX10比GATA3更敏感(29%对24%)。
    结论:TRPS1是所有乳腺癌亚型的高度敏感标志物,在非管腔癌症中优于GATA3,并且当与GCDFP15组合时显示对TNBC检测的最高灵敏度。它是一个有价值的补充,以准确识别BC的乳房标记面板。
    OBJECTIVE: Trichorhinophalangeal syndrome-1 (TRPS1) has been proposed as a novel breast marker with equally high expression in breast cancer (BC) subtypes, making it a useful diagnostic tool. Here, its expression was evaluated alongside other commonly used markers [GATA3, GCDFP15, mammaglobin (MGB) and SOX10] in a large cohort of BCs (n = 1852) and their corresponding nodal metastases. Its usefulness as a diagnostic tool and its correlation with clinicopathological features were assessed.
    RESULTS: TRPS1 was expressed at 75.8% overall in the BC cohort, with at least 58% expression among BC subtypes. It was less sensitive than GATA3 for luminal and HER2-overexpressing (HER2-OE) cancers (luminal A: 82 versus 97%; luminal B: 80 versus 95%; HER2-OE: 62 versus 76%), but it was the most sensitive for TNBC (60 versus ≤ 41%). It showed a stable expression in nodal metastases (primary tumour 76 versus nodal metastasis 78%), unlike a reduced nodal expression for GATA3 (86 versus 77%). TRPS1 outperformed GATA3 in detecting non-luminal cancers when paired with other breast markers. TRPS1 and GCDFP15 was the most sensitive combination in TNBC detection, with a 76% detection rate. For TRPS1-negative and GCDFP15-negative TNBCs, SOX10 was more sensitive than GATA3 (29 versus 24%).
    CONCLUSIONS: TRPS1 is a highly sensitive marker for all breast cancer subtypes, outperforming GATA3 in non-luminal cancers and displaying the highest sensitivity for TNBC detection when combined with GCDFP15. It is a valuable addition to the breast marker panel for accurate identification of BC.
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  • 文章类型: Journal Article
    目的:肝切除术后肝功能衰竭(PHLF)导致肝切除术患者预后不良,其中肝血管重建起着关键作用。然而,肝血管重建的调节因子仍不清楚.本研究旨在探讨肝血管重建的调控机制,并确定预测肝切除术患者PHLF的生物标志物。
    方法:在腺相关病毒8(AAV8)联合Alb-Cre-CRISPR/Cas9小鼠中筛选与肝血管重建相关的候选基因。使用内皮前体输血和相关的肝分区和门静脉结扎用于分期肝切除术(ALPPS)模型来评估候选基因的生物学活性。在ALPPS患者的活检中检测到候选水平。同时使用回顾性资料筛选PHLF的危险因素。
    结果:肝细胞中Gata3的下调和Ramp2的上调促进了肝窦内皮细胞(LSEC)的增殖和肝血运重建。色素上皮衍生因子(PEDF)和血管内皮生长因子A(VEGFA)在调节骨髓内皮前体的迁移和肝切除术后新窦的形成中起相反的作用。Gata3限制了患者来源的肝类器官中的内皮细胞功能,已被Gata3抑制剂废除。此外,Gata3的过度表达导致ALPPS小鼠的死亡率更高,通过PEDF中和抗体改善。ALPPS患者Gata3/Ramp2与PEDF/VEGFA的表达呈负相关。构建了血清PEDF/VEGF指数(SPVI)等多因素的列线图模型,可以有效预测PHLF的风险。
    结论:肝细胞中Gata3和Ramp2的平衡通过将PEDF转变为VEGFA来调节LSECs的增殖和肝血运重建,这为PHLF的预防和治疗提供了潜在的目标。
    在这项研究中,我们揭示了一种新的机制,即肝细胞中Gata3和Ramp2的平衡通过在肝切除或ALLPS诱导的肝再生过程中将PEDF转变为VEGFA来调节肝血管重建。我们还确定了血清PEDF/VEGFA指数(SPVI)作为肝切除术后肝衰竭(PHLF)患者的潜在预测因子。这项研究将更好地了解肝细胞如何促进肝脏再生和预防和治疗PHLF的新目标。
    OBJECTIVE: Post-hepatectomy liver failure (PHLF) leads to poor prognosis in patients undergoing hepatectomy, with hepatic vascular reconstitution playing a critical role. However, the regulators of hepatic vascular reconstitution remain unclear. In this study, we aimed to investigate the regulatory mechanisms of hepatic vascular reconstitution and identify biomarkers predicting PHLF in patients undergoing hepatectomy.
    METHODS: Candidate genes that were associated with hepatic vascular reconstitution were screened using adeno-associated virus vectors in Alb-Cre-CRISPR/Cas9 mice subjected to partial hepatectomy. The biological activities of candidate genes were estimated using endothelial precursor transfusion and associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) models. The level of candidates was detected in biopsies from patients undergoing ALPPS. Risk factors for PHLF were also screened using retrospective data.
    RESULTS: Downregulation of Gata3 and upregulation of Ramp2 in hepatocytes promoted the proliferation of liver sinusoidal endothelial cells and hepatic revascularization. Pigment epithelium-derived factor (PEDF) and vascular endothelial growth factor A (VEGFA) played opposite roles in regulating the migration of endothelial precursors from bone marrow and the formation of new sinusoids after hepatectomy. Gata3 restricted endothelial cell function in patient-derived hepatic organoids, which was abrogated by a Gata3 inhibitor. Moreover, overexpression of Gata3 led to higher mortality in ALPPS mice, which was improved by a PEDF-neutralizing antibody. The expression of Gata3/RAMP and PEDF/VEGFA tended to have a negative correlation in patients undergoing ALPPS. A nomogram incorporating multiple factors, such as serum PEDF/VEGF index, was constructed and could efficiently predict the risk of PHLF.
    CONCLUSIONS: The balance of Gata3 and Ramp2 in hepatocytes regulates the proliferation of liver sinusoidal endothelial cells and hepatic revascularization via changes in the expression of PEDF and VEGFA, revealing potential targets for the prevention and treatment of PHLF.
    UNASSIGNED: In this study, we show that the balance of Gata3 and Ramp2 in hepatocytes regulates hepatic vascular reconstitution by promoting a shift from pigment epithelium-derived factor (PEDF) to vascular endothelial growth factor A (VEGFA) expression during hepatectomy- or ALLPS (associating liver partition and portal vein ligation for staged hepatectomy)-induced liver regeneration. We also identified serum PEDF/VEGFA index as a potential predictor of post-hepatectomy liver failure in patients who underwent hepatectomy. This study improves our understanding of how hepatocytes contribute to liver regeneration and provides new targets for the prevention and treatment of post-hepatectomy liver failure.
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  • 文章类型: English Abstract
    OBJECTIVE: To investigate the effects of long non-coding RNA (lncRNA) GATA3 antisense RNA 1 (GATA3-AS1) targeting miR-515-5p on the proliferation and apoptosis of childhood acute lymphoblastic leukemia (ALL) cells.
    METHODS: RT-qPCR was used to determine the expression of GATA3-AS1 and miR-515-5p in the plasma of controls and ALL children. Human ALL cells Jurkat were divided into si-GATA3-AS1, si-NC, miR-NC, miR-515-5p, si-GATA3-AS1+anti-miR-NC and si-GATA3-AS1+anti-miR-515-5p groups. CCK-8 assay was used to detect the cell proliferation, and flow cytometry was used to detect the cell apoptosis. The targeting relationship between GATA3-AS1 and miR-515-5p was determined by dual-luciferase reporter assay.
    RESULTS: The expression level of GATA3-AS1 in the plasma of ALL children was significantly higher than that of controls (P <0.001), while the expression level of miR-515-5p was significantly lower than that of controls (P <0.001). Compared with the si-NC group, the cell inhibition rate, apoptosis rate, and miR-515-5p expression level in si-GATA3-AS1 group were significantly increased (P <0.001). Compared with the miR-NC group, the cell inhibition rate and apoptosis rate in miR-515-5p group were significantly increased (P <0.001). GATA3-AS1 could directly and specifically bind to miR-515-5p. Compared with the si-GATA3-AS1+anti-miR-NC group, the cell inhibition rate and apoptosis rate in si-GATA3-AS1+anti-miR-515-5p group were significantly decreased (P <0.001).
    CONCLUSIONS: Down-regulation of GATA3-AS1 can inhibit proliferation and induce apoptosis of childhood ALL cells by targeting up-regulation of miR-515-5p expression.
    UNASSIGNED: lncRNA GATA3-AS1靶向miR-515-5p对儿童急性淋巴细胞 白血病细胞增殖和凋亡的影响.
    UNASSIGNED: 探讨长链非编码RNA(lncRNA)GATA3反义RNA1(GATA3-AS1)靶向miR-515-5p 对儿童急性淋巴细胞白血病(ALL)细胞增殖和凋亡的影响。.
    UNASSIGNED: RT-qPCR检测对照者和ALL患儿血浆中GATA3-AS1和miR-515-5p的表达水平。将人ALL细胞Jurkat分为si-GATA3-AS1、si-NC、miR-NC、miR-515-5p、si-GATA3-AS1+anti-miR-NC和si-GATA3-AS1 +anti-miR-515-5p共6组。CCK-8法检测细胞增殖,流式细胞术分析细胞凋亡,双荧光素酶报告实验用于确定GATA3-AS1和miR-515-5p的靶向关系。.
    UNASSIGNED: ALL患儿血浆中GATA3-AS1表达水平显著高于对照者(P <0.001 ),miR-515-5p表达水平显著低于对照者(P <0.001)。与si-NC组比较,si-GATA3-AS1组细胞抑制率、凋亡率、miR-515-5p表达水平显著升高(P <0.001)。与miR-NC组比较,miR-515-5p组细胞抑制率、凋亡率显著升高(P <0.001 )。GATA3-AS1与miR-515-5p直接特异性结合。与si-GATA3-AS1+anti-miR-NC组比较,si-GATA3-AS1+ anti-miR-515-5p组细胞抑制率、凋亡率显著降低(P <0.001)。.
    UNASSIGNED: 下调GATA3-AS1可通过靶向上调miR-515-5p的表达抑制儿童ALL细胞增殖,并诱导细胞凋亡。.
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