signaling pathways

信号通路
  • 文章类型: Journal Article
    乳腺癌是全世界最常见的恶性肿瘤之一。它占女性癌症引起的所有死亡病例的15%以上。乳腺癌是代表各种组织学类型的异质性疾病,分子特征,和临床资料。然而,所有的乳腺癌都组织在异质细胞群的层次结构中,一小部分癌症干细胞(乳腺癌干细胞(BCSC))在癌症进展中起着推定的作用,他们负责治疗失败。在乳腺癌的不同分子亚型中,它们呈现出不同的特点,具有特定的标记配置文件,预后,和治疗。最近的努力集中在解决Wnt,缺口,刺猬,PI3K/Akt/mTOR,和HER2信号通路。开发诊断和治疗策略能够更有效地消除肿瘤块和干细胞群。因此,关于针对“正常”乳腺癌细胞和乳腺癌干细胞亚群的适当治疗方法的知识对于成功消除癌症至关重要。
    Breast cancer is one of the most frequently detected malignancies worldwide. It is responsible for more than 15% of all death cases caused by cancer in women. Breast cancer is a heterogeneous disease representing various histological types, molecular characteristics, and clinical profiles. However, all breast cancers are organized in a hierarchy of heterogeneous cell populations, with a small proportion of cancer stem cells (breast cancer stem cells (BCSCs)) playing a putative role in cancer progression, and they are responsible for therapeutic failure. In different molecular subtypes of breast cancer, they present different characteristics, with specific marker profiles, prognoses, and treatments. Recent efforts have focused on tackling the Wnt, Notch, Hedgehog, PI3K/Akt/mTOR, and HER2 signaling pathways. Developing diagnostics and therapeutic strategies enables more efficient elimination of the tumor mass together with the stem cell population. Thus, the knowledge about appropriate therapeutic methods targeting both \"normal\" breast cancer cells and breast cancer stem cell subpopulations is crucial for success in cancer elimination.
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  • 文章类型: Journal Article
    短链脂肪酸(SCFA),主要包括醋酸酯,丙酸和丁酸,在部分消化和不可消化的多糖发酵过程中由肠道细菌产生。SCFA在调节肠道能量代谢和维持肠道环境稳态方面发挥着重要作用,并且在肠道外的器官和组织中也发挥着重要的调节作用。近年来,许多研究表明,SCFA可以调节炎症并影响宿主健康,并且还确定了两个主要的信号传导机制:G蛋白偶联受体(GPCRs)的激活和组蛋白去乙酰化酶(HDAC)的抑制。此外,越来越多的证据强调了每种SCFA在影响健康维护和疾病发展方面的重要性.在这次审查中,我们总结了SCFA的生物学特性及其在炎症和身体健康中的信号通路的最新进展。希望,它可以为人类疾病的营养预防和治疗提供系统的理论依据。
    Short chain fatty acids (SCFAs), mainly including acetate, propionate and butyrate, are produced by intestinal bacteria during the fermentation of partially digested and indigestible polysaccharides. SCFAs play an important role in regulating intestinal energy metabolism and maintaining the homeostasis of the intestinal environment and also play an important regulatory role in organs and tissues outside the gut. In recent years, many studies have shown that SCFAs can regulate inflammation and affect host health, and two main signaling mechanisms have also been identified: the activation of G-protein coupled receptors (GPCRs) and inhibition of histone deacetylase (HDAC). In addition, a growing body of evidence highlights the importance of every SCFA in influencing health maintenance and disease development. In this review, we summarized the recent advances concerning the biological properties of SCFAs and their signaling pathways in inflammation and body health. Hopefully, it can provide a systematic theoretical basis for the nutritional prevention and treatment of human diseases.
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  • 文章类型: Journal Article
    肿瘤血管生成,支持肿瘤生长和转移的新血管的形成,是由多种信号通路调节的复杂过程。涉及蛋白激酶的信号通路的失调已经被广泛研究,但是蛋白磷酸酶在肿瘤微环境中血管生成中的作用仍未被研究。然而,在血管生成途径中,蛋白磷酸酶在调节信号级联中起关键作用。本文综述了蛋白磷酸酶在肿瘤血管生成中的作用,突出它们的不同功能和行动机制。蛋白质磷酸酶通过催化蛋白质的去磷酸化作用,是细胞信号通路的关键调节因子。从而调节它们的活动和功能。这篇综述旨在评估蛋白质酪氨酸磷酸酶和丝氨酸/苏氨酸磷酸酶的活性。这些磷酸酶通过各种机制对血管生成信号通路发挥作用,包括血管生成受体和下游信号分子的直接去磷酸化。此外,蛋白磷酸酶也与参与血管生成的其他信号通路发生串扰,进一步强调它们在调节肿瘤血管化方面的重要性,包括内皮细胞存活,发芽,和血管成熟。总之,这篇综述强调了蛋白磷酸酶在肿瘤血管生成中的关键作用,并强调了它们作为肿瘤抗血管生成治疗靶点的潜力.
    Tumor angiogenesis, the formation of new blood vessels to support tumor growth and metastasis, is a complex process regulated by a multitude of signaling pathways. Dysregulation of signaling pathways involving protein kinases has been extensively studied, but the role of protein phosphatases in angiogenesis within the tumor microenvironment remains less explored. However, among angiogenic pathways, protein phosphatases play critical roles in modulating signaling cascades. This review provides a comprehensive overview of the involvement of protein phosphatases in tumor angiogenesis, highlighting their diverse functions and mechanisms of action. Protein phosphatases are key regulators of cellular signaling pathways by catalyzing the dephosphorylation of proteins, thereby modulating their activity and function. This review aims to assess the activity of the protein tyrosine phosphatases and serine/threonine phosphatases. These phosphatases exert their effects on angiogenic signaling pathways through various mechanisms, including direct dephosphorylation of angiogenic receptors and downstream signaling molecules. Moreover, protein phosphatases also crosstalk with other signaling pathways involved in angiogenesis, further emphasizing their significance in regulating tumor vascularization, including endothelial cell survival, sprouting, and vessel maturation. In conclusion, this review underscores the pivotal role of protein phosphatases in tumor angiogenesis and accentuate their potential as therapeutic targets for anti-angiogenic therapy in cancer.
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  • 文章类型: Journal Article
    除了是老年人中最普遍的神经变性形式,AD是一种破坏性的多因素疾病。目前,治疗仅解决其症状。一些临床研究表明,这种疾病在最初的症状出现之前几十年就开始显现,这表明研究早期变化对于改善早期诊断和发现新的治疗方法至关重要。我们的研究使用生物信息学和系统生物学来鉴定可用于诊断和预后的AD生物标志物。该程序是对GEO数据库中的数据执行的,并进行GO和KEGG富集分析。然后,我们建立了蛋白质之间相互作用的网络。几种miRNA预测工具,包括miRDB,miRWalk,使用TargetScan。ceRNA网络导致了8个mRNA的鉴定,四个circRNAs,七个miRNA,和七个lncRNAs。多种机制,包括细胞周期和DNA复制,已通过ceRNA网络促进AD的发展。通过使用ceRNA网络,应该有可能提取用于AD治疗的前瞻性生物标志物和治疗靶点。参与DNA细胞周期和DNA复制的过程可能有助于阿尔茨海默病的发展。
    In addition to being the most prevalent form of neurodegeneration among the elderly, AD is a devastating multifactorial disease. Currently, treatments address only its symptoms. Several clinical studies have shown that the disease begins to manifest decades before the first symptoms appear, indicating that studying early changes is crucial to improving early diagnosis and discovering novel treatments. Our study used bioinformatics and systems biology to identify biomarkers in AD that could be used for diagnosis and prognosis. The procedure was performed on data from the GEO database, and GO and KEGG enrichment analysis were performed. Then, we set up a network of interactions between proteins. Several miRNA prediction tools including miRDB, miRWalk, and TargetScan were used. The ceRNA network led to the identification of eight mRNAs, four circRNAs, seven miRNAs, and seven lncRNAs. Multiple mechanisms, including the cell cycle and DNA replication, have been linked to the promotion of AD development by the ceRNA network. By using the ceRNA network, it should be possible to extract prospective biomarkers and therapeutic targets for the treatment of AD. It is possible that the processes involved in DNA cell cycle and the replication of DNA contribute to the development of Alzheimer\'s disease.
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  • 文章类型: Journal Article
    氯菊酯(Per)是一种广泛使用且在农产品和环境中经常检测到的拟除虫菊酯农药。它可能对非靶标生物造成潜在毒性。据报道,Per会影响脂质稳态,尽管机制未定义。本研究旨在探索斑马鱼肝脏中Per诱导脂质代谢紊乱的特征性转录组学谱并阐明其潜在的信号通路。结果表明,环境暴露于Per引起肝脏指数的变化,组织病理学,和斑马鱼的氧化应激。此外,转录组结果显示,Per严重改变了参与代谢的途径,免疫系统,和内分泌系统。我们对与脂质代谢相关的基因进行了更深入的分析。我们的发现表明,暴露于Per通过氧化应激激活KRAS-PPAR-GLUT信号通路导致脂质代谢中断。暴露于Per引起的脂质稳态的破坏也可能导致肥胖,肝炎,和其他疾病。该结果可能为氯菊酯对水生生物的风险提供新的见解,并为肝毒性的发病机理提供新的视野。
    Permethrin (Per) is a widely used and frequently detected pyrethroid pesticide in agricultural products and the environment. It may pose potential toxicity to non-target organisms. Per has been reported to affect lipid homeostasis, although the mechanism is undefined. This study aims to explore the characteristic transcriptomic profiles and clarify the underlying signaling pathways of Per-induced lipid metabolism disorder in zebrafish liver. The results showed that environmental exposure to Per caused changes in the liver index, histopathology, and oxidative stress in zebrafish. Moreover, transcriptome results showed that Per heavily altered the pathways involved in metabolism, the immune system, and the endocrine system. We conducted a more in-depth analysis of the genes associated with lipid metabolism. Our findings revealed that exposure to Per led to a disruption in lipid metabolism by activating the KRAS-PPAR-GLUT signaling pathways through oxidative stress. The disruption of lipid homeostasis caused by exposure to Per may also contribute to obesity, hepatitis, and other diseases. The results may provide new insights for the risk of Permethrin to aquatic organisms and new horizons for the pathogenesis of hepatotoxicity.
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  • 文章类型: Journal Article
    癌症是世界范围内导致死亡的主要原因之一,每年有超过1000万人死亡。虽然肿瘤可以手术切除并用化疗治疗,放射治疗,免疫疗法,激素治疗,或联合疗法,目前的治疗通常会导致正常组织的毒副作用。因此,研究人员正在积极寻找选择性消除癌细胞的方法,将正常组织的毒副作用降至最低。酪蛋白及其衍生物已显示出有希望的抗癌潜力,证明抗肿瘤和细胞毒性作用,从各种肿瘤类型的细胞不造成伤害正常细胞。总的来说,这些数据揭示了酪蛋白及其衍生肽研究的进展,特别是提供对癌症治疗中作用的分子机制的全面了解。这些机制通过各种信号通路发生,包括(i)干扰素相关STAT1信号的增加,(ii)抑制干性相关标志物,如CD44,(iii)衰减STAT3/HIF1-α信号,(iv)uPAR和PAI-1的下调表达,(v)线粒体膜电位的丧失和细胞内ATP产生的减少,(vi)caspase-3活性的增加,和(vii)TLR4/NF-κB信号传导的抑制。因此,我们得出的结论是酪蛋白可能是癌症治疗的有效佐剂。
    Cancer is one of the leading causes of death worldwide, with over 10 million fatalities annually. While tumors can be surgically removed and treated with chemotherapy, radiotherapy, immunotherapy, hormonal therapy, or combined therapies, current treatments often result in toxic side effects in normal tissue. Therefore, researchers are actively seeking ways to selectively eliminate cancerous cells, minimizing the toxic side effects in normal tissue. Caseins and its derivatives have shown promising anti-cancer potential, demonstrating antitumor and cytotoxic effects on cells from various tumor types without causing harm to normal cells. Collectively, these data reveals advancements in the study of caseins and their derivative peptides, particularly providing a comprehensive understanding of the molecular mechanism of action in cancer therapy. These mechanisms occur through various signaling pathways, including (i) the increase of interferon-associated STAT1 signaling, (ii) the suppression of stemness-related markers such as CD44, (iii) the attenuation of the STAT3/HIF1-α signaling, (iv) the down-expression of uPAR and PAI-1, (v) the loss of mitochondrial membrane potential and reduced intracellular ATP production, (vi) the increase of caspase-3 activity, and (vii) the suppression of TLR4/NF-кB signaling. Therefore, we conclude that casein could be an effective adjuvant for cancer treatment.
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  • 文章类型: Journal Article
    解决对更公平的心脏肿瘤护理的需求需要注意心脏肿瘤疾病预防和结果方面的现有差异。这在受健康不利社会决定因素(SDOH)影响的人群中尤为重要。SDOH的复杂关系,癌症诊断,与肿瘤治疗相关的心脏毒性的结果受社会政治影响,经济,和文化因素。此外,细胞信号传导机制和表观遗传效应对基因表达的影响将不良SDOH与癌症和肿瘤治疗的CVD相关并发症联系起来.为了减轻这些差距,需要一个多方面的战略,包括关注获得医疗保健,政策,和社区参与以改善疾病筛查和管理。跨学科团队还必须促进文化谦逊和能力,并利用新的健康技术来促进合作,以解决不良SDOH对心脏肿瘤结果的影响。
    Addressing the need for more equitable cardio-oncology care requires attention to existing disparities in cardio-oncologic disease prevention and outcomes. This is particularly important among those affected by adverse social determinants of health (SDOH). The intricate relationship of SDOH, cancer diagnosis, and outcomes from cardiotoxicities associated with oncologic therapies is influenced by sociopolitical, economic, and cultural factors. Furthermore, mechanisms in cell signaling and epigenetic effects on gene expression link adverse SDOH to cancer and the CVD-related complications of oncologic therapies. To mitigate these disparities, a multifaceted strategy is needed that includes attention to health care access, policy, and community engagement for improved disease screening and management. Interdisciplinary teams must also promote cultural humility and competency and leverage new health technology to foster collaboration in addressing the impact of adverse SDOH in cardio-oncologic outcomes.
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  • 文章类型: Journal Article
    皮肤病,影响外皮系统,涉及多种分子机制,如细胞增殖,凋亡,炎症和免疫反应。长链非编码RNA,特别是转移相关的肺腺癌转录本1(MALAT1),是基因表达的关键调节因子。MALAT1影响炎症反应,免疫细胞功能和信号通路,影响各种生理和病理过程,包括皮肤病。在牛皮癣等皮肤病中观察到MALAT1的失调,特应性皮炎和系统性红斑狼疮。然而,其确切作用尚不清楚。这篇综述巩固了MALAT1对皮肤生物学和病理学影响的知识,强调其在皮肤病中的潜在诊断和治疗意义。
    [方框:见正文]。
    Dermatologic disorders, affecting the integumentary system, involve diverse molecular mechanisms such as cell proliferation, apoptosis, inflammation and immune responses. Long noncoding RNAs, particularly Metastasis-Associated Lung Adenocarcinoma Transcript 1 (MALAT1), are crucial regulators of gene expression. MALAT1 influences inflammatory responses, immune cell function and signaling pathways, impacting various physiological and pathological processes, including dermatologic disorders. Dysregulation of MALAT1 is observed in skin conditions like psoriasis, atopic dermatitis and systemic lupus erythematosus. However, its precise role remains unclear. This review consolidates knowledge on MALAT1\'s impact on skin biology and pathology, emphasizing its potential diagnostic and therapeutic implications in dermatologic conditions.
    [Box: see text].
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  • 文章类型: Journal Article
    癌症是一种由异常细胞生长驱动的多层面疾病,对全球健康构成重大威胁。多因素原因,个体对治疗药物敏感性的差异,和诱导的耐药性在有效解决癌症方面构成了重大挑战。使癌症在其生理上高度异质性的最重要方面之一在于所涉及的基因以及在恶性状况下这些基因中的一些发生的变化。遗传因素与肿瘤发生有关,programming,对治疗的反应,和转移。在人类癌症中起关键作用的一种这样的基因是共济失调-毛细血管扩张基因(ATM)的突变形式。ATM基因位于染色体11q23上,在维持基因组稳定性方面起着至关重要的作用。了解A-T的遗传基础对诊断至关重要,管理,和治疗。乳腺癌,肺癌,前列腺癌,和胃癌表现出与ATM基因的不同关系并影响其通路。针对ATM途径证明有希望提高治疗效果,特别是与DNA损伤反应途径有关。分析ATM突变的治疗后果,特别是在这些癌症类型中,促进了早期检测的方法,干预,个性化治疗方法的发展,改善患者预后。这篇综述强调了ATM基因在各种癌症中的作用。强调其对DNA修复途径和治疗反应的影响。
    Cancer is a multifaceted disease driven by abnormal cell growth and poses a significant global health threat. The multifactorial causes, differences in individual susceptibility to therapeutic drugs, and induced drug resistance pose major challenges in addressing cancers effectively. One of the most important aspects in making cancers highly heterogeneous in their physiology lies in the genes involved and the changes occurring to some of these genes in malignant conditions. The Genetic factors have been implicated in the oncogenesis, progression, responses to treatment, and metastasis. One such gene that plays a key role in human cancers is the mutated form of the Ataxia-telangiectasia gene (ATM). ATM gene located on chromosome 11q23, plays a vital role in maintaining genomic stability. Understanding the genetic basis of A-T is crucial for diagnosis, management, and treatment. Breast cancer, lung cancer, prostate cancer, and gastric cancer exhibit varying relationships with the ATM gene and influence their pathways. Targeting the ATM pathway proves promising for enhancing treatment effectiveness, especially in conjunction with DNA damage response pathways. Analyzing the therapeutic consequences of ATM mutations, especially in these cancer types facilitates the approaches for early detection, intervention, development of personalized treatment approaches, and improved patient outcomes. This review emphasizes the role of the ATM gene in various cancers, highlighting its impact on DNA repair pathways and therapeutic responses.
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  • 文章类型: Journal Article
    已报道外源性胰岛素样生长因子-1(IGF-1)通过调节血管内皮细胞(VEC)促进伤口愈合。尽管已有IGF-1对VEC的作用及其在血管生成中的作用的研究,关于IGF-1的抗炎和血管生成作用的机制尚不清楚.在这项研究中,我们使用IFN-γ诱导的炎症模型研究了IGF-1的伤口愈合过程和相关信号通路。结果证明IGF-1能促进细胞增殖,抑制VECs中的炎症,促进血管生成。体内研究进一步证实,IGF-1可以减轻炎症,增强血管再生,并改善急性伤口的再上皮化和胶原沉积。重要的是,Ras/PI3K/IKK/NF-κB信号通路被确定为IGF-1发挥其抗炎和促血管生成作用的机制。这些发现有助于理解IGF-1在伤口愈合中的作用,并可能对开发新的伤口治疗方法有意义。
    Exogenous insulin-like growth factor-1 (IGF-1) has been reported to promote wound healing through regulation of vascular endothelial cells (VECs). Despite the existing studies of IGF-1 on VEC and its role in angiogenesis, the mechanisms regarding anti-inflammatory and angiogenetic effects of IGF-1 remain unclear. In this study, we investigated the wound-healing process and the related signaling pathway of IGF-1 using an inflammation model induced by IFN-γ. The results demonstrated that IGF-1 can increase cell proliferation, suppress inflammation in VECs, and promote angiogenesis. In vivo studies further confirmed that IGF-1 can reduce inflammation, enhance vascular regeneration, and improve re-epithelialization and collagen deposition in acute wounds. Importantly, the Ras/PI3K/IKK/NF-κB signaling pathways was identified as the mechanisms through which IGF-1 exerts its anti-inflammatory and pro-angiogenic effects. These findings contribute to the understanding of IGF-1\'s role in wound healing and may have implications for the development of new wound treatment approaches.
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