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Unveiling the biological role of sphingosine-1-phosphate receptor modulators in inflammatory bowel diseases 被引量:1
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作者 Evanthia Tourkochristou Athanasia Mouzaki Christos Triantos 《World Journal of Gastroenterology》 SCIE CAS 2023年第1期110-125,共16页
Inflammatory bowel disease(IBD)is chronic inflammation of the gastrointestinal tract that has a high epidemiological prevalence worldwide.The increasing disease burden worldwide,lack of response to current biologic th... Inflammatory bowel disease(IBD)is chronic inflammation of the gastrointestinal tract that has a high epidemiological prevalence worldwide.The increasing disease burden worldwide,lack of response to current biologic therapeutics,and treatment-related immunogenicity have led to major concerns regarding the clinical management of IBD patients and treatment efficacy.Understanding disease pathogenesis and disease-related molecular mechanisms is the most important goal in developing new and effective therapeutics.Sphingosine-1-phosphate(S1P)receptor(S1PR)modulators form a class of oral small molecule drugs currently in clinical development for IBD have shown promising effects on disease improvement.S1P is a sphingosine-derived phospholipid that acts by binding to its receptor S1PR and is involved in the regulation of several biological processes including cell survival,differentiation,migration,proliferation,immune response,and lymphocyte trafficking.T lymphocytes play an important role in regulating inflammatory responses.In inflamed IBD tissue,an imbalance between T helper(Th)and regulatory T lymphocytes and Th cytokine levels was found.The S1P/S1PR signaling axis and metabolism have been linked to inflammatory responses in IBD.S1P modulators targeting S1PRs and S1P metabolism have been developed and shown to regulate inflammatory responses by affecting lymphocyte trafficking,lymphocyte number,lymphocyte activity,cytokine production,and contributing to gut barrier function. 展开更多
关键词 Inflammatory bowel disease sphingosine-1-phosphate Intestinal inflammation T helper 1/T helper 17 sphingosine 1 phosphate Modulators Immune responses
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Research progress of sphingosine 1-phosphate and its signal transduction in central nervous system diseases
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作者 BEN Xin-yu YI Xi-nan LI Qi-fu 《Journal of Hainan Medical University》 CAS 2023年第23期64-69,共6页
Sphingosine 1-phosphate(S1P),as a sphingolipid metabolite,has become a key substance in regulating various physiological processes,involved in differentiation,proliferation,migration,morphogenesis,cytoskeleton formati... Sphingosine 1-phosphate(S1P),as a sphingolipid metabolite,has become a key substance in regulating various physiological processes,involved in differentiation,proliferation,migration,morphogenesis,cytoskeleton formation,adhesion,apoptosis,etc.process.Sphingosine 1-phosphate can not only activate the S1P-S1PR signaling pathway by binding to the corresponding receptors on the cell membrane,but also play a role in the cell.In recent years,studies have found that there is a certain relationship between its level changes and the occurrence and development of central nervous system diseases.This article reviews the latest knowledge of sphingosine-1-phosphate in the occurrence and treatment of nervous system diseases,and further clarifies its molecular mechanism in the treatment and development of central nervous system diseases. 展开更多
关键词 sphingosine 1-phosphate sphingolipid metabolism Central nervous system diseases sphingosine kinase s1p receptor
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非瑟酮调节LKB1-AMPK-mTOR-p70S6K通路改善大鼠少弱精子症 被引量:1
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作者 陈利帮 沈炳香 +3 位作者 何春远 赵为陈 常伟 王桐生 《中国药理学通报》 CAS CSCD 北大核心 2024年第7期1296-1301,共6页
目的研究非瑟酮对少弱精子大鼠的睾丸及精子保护作用,并探究其机制。方法构建大鼠少弱精子模型,将大鼠随机分为空白组、模型组、非瑟酮低、中、高剂量治疗组、LKB1激动剂组,每组各10只。ELISA法检测各组卵泡刺激素(follicle-stimulating... 目的研究非瑟酮对少弱精子大鼠的睾丸及精子保护作用,并探究其机制。方法构建大鼠少弱精子模型,将大鼠随机分为空白组、模型组、非瑟酮低、中、高剂量治疗组、LKB1激动剂组,每组各10只。ELISA法检测各组卵泡刺激素(follicle-stimulating hormone,FSH)、黄体生成素(luteinising hormone,LH)、睾酮(testosterone,T)、雌二醇(estradiol,E2)、催乳素(prolactin,PRL)水平;流式细胞术检测精子细胞凋亡;HE染色检测大鼠睾丸组织损伤;透射电镜检测精子细胞超微结构;qRT-PCR和Western blot检测LKB1、AMPK、mTOR、p70S6K mRNA和蛋白表达。结果与空白组相比,模型组和LKB1激动剂组FSH、LH、PRL、T等激素水平明显降低,精子细胞出现凋亡,睾丸损伤严重,LKB1、p-AMPK/AMPK表达明显上调,mTOR、p-p70S6K/p70S6K表达下调(P<0.05);与模型组相比,不同剂量的非瑟酮治疗后,精子细胞凋亡数明显减少,FSH、LH、PRL、T等激素水平明显上升,LKB1、p-AMPK/AMPK明显下调,mTOR、p-p70S6K/p70S6K明显上调(P<0.05)。结论非瑟酮可有效治疗少弱精症大鼠,其作用机制可能与LKB1-AMPK-mTOR-p70S6K信号通路有关。 展开更多
关键词 非瑟酮 少弱精症 AMpK MTOR p70s6K LKB1
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鸦胆子苦醇调节SPHK1/S1P/S1PR3信号通路对卵巢癌细胞恶性生物学行为的影响
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作者 钟明艳 杨帆 +2 位作者 李海珍 占琪 张伟 《中国药房》 CAS 北大核心 2024年第16期1991-1997,共7页
目的探讨鸦胆子苦醇调节鞘氨醇激酶1(SPHK1)/鞘氨醇-1-磷酸(S1P)/鞘氨醇-1-磷酸酯受体3(S1PR3)信号通路对卵巢癌细胞恶性生物学行为的影响。方法将体外培养的人卵巢癌细胞株SKOV-3随机分为对照组、鸦胆子苦醇组、SPHK1过表达组、鸦胆子... 目的探讨鸦胆子苦醇调节鞘氨醇激酶1(SPHK1)/鞘氨醇-1-磷酸(S1P)/鞘氨醇-1-磷酸酯受体3(S1PR3)信号通路对卵巢癌细胞恶性生物学行为的影响。方法将体外培养的人卵巢癌细胞株SKOV-3随机分为对照组、鸦胆子苦醇组、SPHK1过表达组、鸦胆子苦醇+空载组、鸦胆子苦醇+SPHK1过表达组,检测各组细胞活力、克隆形成率、迁移数、侵袭数、凋亡率以及增殖相关蛋白[骨髓细胞瘤病毒癌基因同源物(C-myc)]、凋亡相关蛋白[B细胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)]、上皮间质转化(EMT)相关蛋白[上皮钙黏素(E-cadherin)、神经钙黏素(N-cadherin)]及SPHK1、S1P、S1PR3蛋白表达量。采用SKOV-3细胞构建裸鼠移植瘤模型,随机分为对照组、鸦胆子苦醇低剂量组、鸦胆子苦醇中剂量组、鸦胆子苦醇高剂量组、SPHK1过表达组、鸦胆子苦醇高剂量+空载组、鸦胆子苦醇高剂量+SPHK1过表达组,检测各组移植瘤生长情况;随机分为对照组、鸦胆子苦醇组、SPHK1过表达组、鸦胆子苦醇+空载组、鸦胆子苦醇+SPHK1过表达组,检测各组移植瘤组织中增殖、凋亡、EMT及SPHK1/S1P/S1PR3信号通路相关蛋白表达量。结果体外实验显示,与对照组相比,鸦胆子苦醇组细胞活力、克隆形成率、迁移数、侵袭数和C-myc、Bcl-2、Ncadherin、SPHK1、S1P、S1PR3蛋白表达量均显著降低(P<0.05),凋亡率和Bax、E-cadherin蛋白表达量均显著升高(P<0.05);过表达SPHK1可减弱鸦胆子苦醇对SKOV-3细胞上述指标的影响。体内实验显示,与对照组相比,鸦胆子苦醇低、中、高剂量组裸鼠干预21 d后的移植瘤体积均显著降低并呈剂量依赖性(P<0.05);高剂量鸦胆子苦醇还可显著降低移植瘤组织中C-myc、Bcl-2、Ncadherin、SPHK1、S1P、S1PR3蛋白表达量(P<0.05),显著升高Bax、E-cadherin蛋白表达量(P<0.05);过表达SPHK1可减弱鸦胆子苦醇对移植瘤组织上述指标的影响。结论鸦胆子苦醇可通过下调SPHK1/S1P/S1PR3信号通路蛋白表达,进而抑制卵巢癌细胞体外增殖、克隆、EMT、迁移及侵袭并诱导其凋亡,还可抑制卵巢癌细胞在裸鼠体内的生长,最终抑制其恶性生物学行为,对卵巢癌起到显著的抗癌功效。 展开更多
关键词 鸦胆子苦醇 spHK1/s1p/s1pR3信号通路 卵巢癌 恶性生物学行为
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多孔n-GaN/p-Zn_(x)Cu_(1-x)S异质结的制备及紫外探测性能研究
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作者 杜志伟 贾伟 +5 位作者 贾凯达 任恒磊 李天保 董海亮 贾志刚 许并社 《人工晶体学报》 CAS 北大核心 2024年第8期1326-1336,共11页
本文首先采用紫外光辅助电化学刻蚀(UV-EC)方法制备出了孔隙密度为1.51×10^(10)cm^(-2)、平均孔径为38 nm的多孔n-GaN薄膜;随后在其上通过水浴法沉积了一系列Zn_(x)Cu_(1-x)S复合薄膜,x为0.0、0.2、0.4、0.6、0.8、1.0,形成的多孔n... 本文首先采用紫外光辅助电化学刻蚀(UV-EC)方法制备出了孔隙密度为1.51×10^(10)cm^(-2)、平均孔径为38 nm的多孔n-GaN薄膜;随后在其上通过水浴法沉积了一系列Zn_(x)Cu_(1-x)S复合薄膜,x为0.0、0.2、0.4、0.6、0.8、1.0,形成的多孔n-GaN/p-Zn_(x)Cu_(1-x)S异质结带隙在2.34~3.51 eV调控;最后基于这些异质结构建出p-n结型紫外探测器。I-V曲线结果表明这些探测器均具有良好的整流特性,特别是n-GaN/p-Zn_(0.4)Cu_(0.6)S探测器性能最优。在暗态下,I_(+3 V)/I_(-3 V)约为1.78×10^(5);在偏压为-3 V、光功率密度为432μW/cm^(2)(365 nm)的条件下,光暗电流比超过10^(3),上升/下降时间为0.09/39.8 ms,响应度(R)为0.352 A/W,外量子效率(EQE)为119.6%,探测率(D^(*))为3.21×10^(12)Jones。I-t曲线结果表明,多孔n-GaN/p-Zn_(x)Cu_(1-x)S异质结紫外探测器在连续开-关光循环过程中拥有稳定的光电流响应。该研究为制备异质结紫外探测器提供了一定的理论指导和实验数据。 展开更多
关键词 p-Zn_(x)Cu_(1-x)s 多孔n-GaN 异质结 紫外探测器 光暗电流比 响应度
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Roles of sphingosine 1-phosphate on tumorigenesis 被引量:5
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作者 Hsinyu Lee 《World Journal of Biological Chemistry》 CAS 2011年第2期25-34,共10页
Sphingosine 1-phosphate (S1P) is a bioactive sphingolipid with a variety of biological activities.It is generated from the conversion of ceramide to sphingosine by ceramidase and the subsequent conversion of sphingosi... Sphingosine 1-phosphate (S1P) is a bioactive sphingolipid with a variety of biological activities.It is generated from the conversion of ceramide to sphingosine by ceramidase and the subsequent conversion of sphingosine to S1P,which is catalyzed by sphingosine kinases.Through increasing its intracellular levels by sphingolipid metabolism and binding to its cell surface receptors,S1P regulates several physiological and pathological processes,including cell proliferation,migration,angiogenesis and autophagy.These processes are responsible for tumor growth,metastasis and invasion and promote tumor survival.Since ceramide and S1P have distinct functions in regulating in cell fate decision,the balance between the ceramide/sphingosine/S1P rheostat becomes a potent therapeutic target for cancer cells.Herein,we summarize our current understanding of S1P signaling on tumorigenesis and its potential as a target for cancer therapy. 展开更多
关键词 sphingosine 1-phosphate sphingosine KINAsE CERAMIDE ANGIOGENEsIs Autophagy TUMORIGENEsIs
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SphK1/S1P/S1PR2信号通路促进肌生成:运动改善骨骼肌健康的新视角
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作者 张文华 李荀 +3 位作者 张伟超 李欣颖 马帼澳 王孝强 《中国组织工程研究》 CAS 北大核心 2025年第6期1265-1275,共11页
背景:近年来,运动改善骨骼肌的健康已成为学者们关注的一个重要研究内容,适宜的运动对骨骼肌具有积极的作用,其中在运动激活鞘氨醇激酶1(sphingosine kinase1,SphK1)/鞘氨醇-1-磷酸(sphingosine-1-phosphate,S1P)/鞘氨醇-1-磷酸受体2(sp... 背景:近年来,运动改善骨骼肌的健康已成为学者们关注的一个重要研究内容,适宜的运动对骨骼肌具有积极的作用,其中在运动激活鞘氨醇激酶1(sphingosine kinase1,SphK1)/鞘氨醇-1-磷酸(sphingosine-1-phosphate,S1P)/鞘氨醇-1-磷酸受体2(sphingosine-1-phosphate receptor2,S1PR2)信号通路如何改善骨骼肌的健康,正受到科研人员的重视。目的:研究运动经SphK1/S1P/S1PR2信号通路如何改善骨骼肌的健康,探索治疗相关肌肉疾病的新方法,以改善人的骨骼肌健康。方法:检索Web of Science、PubMed、中国知网、万方和维普数据库从建库至今与文章主题相关的文献,以“signaling pathway,SphK1,S1P,S1PR2,skeletal muscle,satellite cell,myogenesis,exercise”为英文检索词,以“信号通路,SphK1,S1P,S1PR2,骨骼肌,卫星细胞,肌生成,运动”为中文检索词,最终纳入69篇文献进行分析。结果与结论:①SphK1/S1P/S1PR2信号通路是一个复杂的调控网络,通过SphK1催化产生的S1P,与S1PR2等受体的相互作用,触发下游信号转导过程,进而调控细胞、组织、器官和系统的多种生物学功能。②SphK1/S1P/S1PR2信号通路能调控卫星细胞增殖和成肌细胞分化,改善肌生成。③文章通过文献资料调研法分析了SphK1/S1P/S1PR2信号通路的生理基础以及运动对其影响的可能性。急性有氧运动可提高骨骼肌中SphK1的表达,人体和动物研究中已证实急性和长期运动均可提高骨骼肌中S1P水平,另外研究表明长期抗阻运动可提高S1PR2在骨骼肌中的表达,部分实验结果表明急性和长期运动对肌肉或者血液中S1P水平无显著影响,出现不同结果的原因可能是选择的研究对象、方式、强度及频率不同,而具体机制尚不明确。④研究认为,运动能够促进SphK1/S1P/S1PR2信号通路在骨骼肌中的表达,调控下游相关信号通路,并且针对这一信号通路的研究可能为骨骼肌疾病的治疗提供新的策略和方法,从而改善骨骼肌健康。⑤未来应深化对SphK1/S1P/S1PR2信号通路与骨骼肌健康关联的研究,进一步揭示其与卫星细胞、成肌细胞的调控关系及与上下游通路的相互作用,挖掘其临床应用价值,制定康复方案时考虑该通路变化,探索不同运动对该通路的影响机制,并将其作为潜在治疗靶点,结合人体肌肉模型提升研究深度和准确性。 展开更多
关键词 sphK1/s1p/s1pR2信号通路 骨骼肌 运动 肌生成 卫星细胞 成肌细胞 机制
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Role of sphingosine kinase and sphingosine-1-phosphate in inflammatory arthritis 被引量:3
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作者 Alirio J Melendez Bernard P Leung 《World Journal of Biological Chemistry》 CAS 2010年第11期321-326,共6页
The importance of sphingosine kinase(SphK)and sphingosine-1-phosphate(S1P)in inflammation has been extensively demonstrated.As an intracellular second messenger,S1P plays an important role in calcium signaling and mob... The importance of sphingosine kinase(SphK)and sphingosine-1-phosphate(S1P)in inflammation has been extensively demonstrated.As an intracellular second messenger,S1P plays an important role in calcium signaling and mobilization,and cell proliferation and survival.Activation of various plasma membrane receptors,such as the formyl methionyl leucyl phenylalanine receptor,C5a receptor,and tumor necrosis factor α receptor,leads to a rapid increase in intracellular S1P level via SphK stimulation.SphK and S1P are implicated in various chronic autoimmune conditions such as rheumatoid arthritis, primary Sjgren's syndrome,and inflammatory bowel disease.Recent studies have demonstrated the important role of SphK and S1P in the development of arthritis by regulating the pro-inflammatory responses.These novel pathways represent exciting potential therapeutic targets. 展开更多
关键词 CYTOKINEs Inflammation RHEUMATOID ARTHRITIs sphingosine KINAsE sphingosine-1-phosphate
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Role of sphingosine 1-phosphate in anti-atherogenic actions of high-density lipoprotein 被引量:4
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作者 Koichi Sato Fumikazu Okajima 《World Journal of Biological Chemistry》 CAS 2010年第11期327-337,共11页
The reverse cholesterol transport mediated by high-density lipoprotein (HDL) is an important mechanism for maintaining body cholesterol, and hence, the crucial anti-atherogenic action of the lipoprotein. Recent studie... The reverse cholesterol transport mediated by high-density lipoprotein (HDL) is an important mechanism for maintaining body cholesterol, and hence, the crucial anti-atherogenic action of the lipoprotein. Recent studies, however, have shown that HDL exerts a variety of anti-inflammatory and anti-atherogenic actions independently of cholesterol metabolism. The present review provides an overview of the roles of sphingosine 1-phosphate (S1P)/S1P receptor and apolipoprotein A-I/scavenger receptor class B type I systems in the anti-atherogenic HDL actions. In addition, the physiological significance of the existence of S1P in the HDL particles is discussed. 展开更多
关键词 High-density lipoprotein sphingosine 1-phosphate scavenger receptor class B type I Anti-atherogenic actions
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Regulatory role of sphingosine kinase and sphingosine-1-phosphate receptor signaling in progenitor/stem cells 被引量:2
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作者 Mei Li Ng Nagendra S Yarla +1 位作者 Mario Menschikowski Olga A Sukocheva 《World Journal of Stem Cells》 SCIE CAS 2018年第9期119-133,共15页
Balanced sphingolipid signaling is important for the maintenance of homeostasis. Sphingolipids were demonstrated to function as structural components, second messengers, and regulators of cell growth and survival in n... Balanced sphingolipid signaling is important for the maintenance of homeostasis. Sphingolipids were demonstrated to function as structural components, second messengers, and regulators of cell growth and survival in normal and disease-affected tissues. Particularly, sphingosine kinase 1 (SphK1) and its product sphingosine-1-phosphate (S1P) operate as mediators and facilitators of proliferation-linked signaling. Unlimited proliferation (selfrenewal) within the regulated environment is a hallmark of progenitor/stem cells that was recently associated with the S1P signaling network in vasculature, nervous,muscular, and immune systems. S1P was shown to regulate progenitor-related characteristics in normal and cancerstemcells(CSCs) viaG-protein coupled receptorsS1Pn(n=1 to 5). The SphK/S1P axis is crucially involved in the regulation of embryonic development of vasculature and the nervous system, hematopoietic stem cell migration, regeneration of skeletal muscle, and development of multiple sclerosis. The ratio of the S1P receptor expression, localization, and specific S1P receptoractivated downstream effectors influenced the rate of selfrenewal and should be further explored as regeneration related targets. Considering malignant transformation,it is essential to control the level of self-renewal capacity.Proliferation of the progenitor cell should be synchronized with differentiation to provide healthy lifelong function of blood, immune systems, and replacement of damaged ordead cells. The differentiation-related role of SphK/S1P remains poorly assessed. A few pioneering investigations exploredpharmacologicaltoolsthattargetsphingolipid signaling and can potentially confine and direct self-renewal towards normal differentiation. Further investigation is required to test the role of the SphK/S1P axis in regulation of self-renewal and differentiation. 展开更多
关键词 sphingosine-1-phosphate spHINGOLIpIDs Embryonic sTEM CELLs Mesenchymal sTEM CELLs Bone marrow hematopoietic sTEM CELLs sphingosine kinase pROGENITOR
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阿芬太尼调节SphK1/S1P信号通路对急性心肌梗死大鼠心肌纤维化的影响
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作者 肖锦亮 邹雪 但家朋 《中国药房》 CAS 北大核心 2024年第8期955-960,共6页
目的探究阿芬太尼(ALF)调节鞘氨醇激酶1(SphK1)/1-磷酸鞘氨醇(S1P)信号通路对急性心肌梗死(AMI)大鼠心肌纤维化的影响。方法取雄性SD大鼠,采用左冠状动脉前降支结扎法构建AMI模型,并将造模成功的大鼠随机分为AMI模型组(Model组)和低剂量... 目的探究阿芬太尼(ALF)调节鞘氨醇激酶1(SphK1)/1-磷酸鞘氨醇(S1P)信号通路对急性心肌梗死(AMI)大鼠心肌纤维化的影响。方法取雄性SD大鼠,采用左冠状动脉前降支结扎法构建AMI模型,并将造模成功的大鼠随机分为AMI模型组(Model组)和低剂量ALF组(ALF-L组,予0.25 mg/kgALF)、高剂量ALF组(ALF-H组,予0.5 mg/kgALF)、高剂量ALF+SphK1激活剂组(ALF-H+K6PC-5组,予0.5 mg/kgALF+1μg/g K6PC-5),同时设置仅进行开/关胸操作而不作左冠状动脉前降支结扎的假手术组(Sham组),每组15只。各药物组大鼠腹腔注射相应药液,每天1次,连续4周。末次给药12 h后,检测各组大鼠的心功能指标[左室收缩压(LVSP)、左室射血分数(LVEF)、左室收缩期内径(LVSD)、左室短轴缩短率(LVFS)],观察其心肌梗死情况、心肌组织病理改变和纤维化程度,检测其血清脑钠肽(BNP)、心肌肌钙蛋白Ⅰ(cTnⅠ)水平以及心肌组织中Ⅰ型胶原蛋白(collagenⅠ)、collagenⅢ、基质金属蛋白酶2(MMP-2)、SphK1、S1P蛋白的表达水平。结果与Sham组比较,Model组大鼠心肌组织细胞排列紊乱,可见大量炎症细胞浸润;LVSP、LVFS、LVEF均显著降低(P<0.05);LVSD,心肌梗死面积、心肌组织胶原容积分数,血清BNP、cTnⅠ水平,心肌组织中collagenⅠ、collagenⅢ、MMP-2、SphK1、S1P蛋白的表达水平均显著升高或增大(P<0.05)。与Model组比较,ALF各剂量组大鼠心肌组织病理改变和纤维化程度均有所改善或减轻,ALF-H组大鼠各定量指标均显著改善且显著优于ALF-L组(P<0.05);K6PC-5可显著逆转高剂量ALF对大鼠上述各定量指标的改善作用(P<0.05)。结论ALF可减轻AMI大鼠心肌纤维化,改善其心功能,该作用可能与抑制SphK1/S1P信号通路有关。 展开更多
关键词 阿芬太尼 急性心肌梗死 心肌纤维化 sphK1/s1p信号通路
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谷胱甘肽S转移酶P1和X线修复交错互补基因1基因多态性与前列腺癌化疗敏感性及预后关系研究
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作者 薛松 张祥 +2 位作者 潘鑫 易晓明 商学军 《中华男科学杂志》 CAS CSCD 2024年第9期803-808,共6页
目的:探究前列腺癌患者谷胱甘肽S转移酶P1(GSTP1)和X线修复交错互补基因1(XRCC1)基因多态性与化疗敏感性及预后的关系。方法:选取2018年5月至2021年5月行雄激素剥夺治疗+双药化疗的前列腺癌患者103例,收集患者临床资料,采用PCR-PFLP方... 目的:探究前列腺癌患者谷胱甘肽S转移酶P1(GSTP1)和X线修复交错互补基因1(XRCC1)基因多态性与化疗敏感性及预后的关系。方法:选取2018年5月至2021年5月行雄激素剥夺治疗+双药化疗的前列腺癌患者103例,收集患者临床资料,采用PCR-PFLP方法对患者行基因分型,并分析其GSTP1-rs1695位点和XRCC1-rs25487位点的多态性,分析其与化疗敏感性的关系,并探究GSTP1和XRCC1基因多态性与患者3年生存率的相关性。结果:103例前列腺癌化疗患者GSTP1-rs1695位点和XRCC1-rs25487位点分布均符合Hardy-Weinberg平衡(χ2=9.794,P>0.05)。GSTP1-rs1695位点中AA基因型占比为65.05%(67/103),AG基因型占比为23.30%(24/103),GG基因型占比为11.65%(12/103);XRCC1-rs25487位点中AA基因型占比为29.13%(30/103),AG基因型占比为50.49%(52/103),GG基因型占比为20.39%(21/103)。GSTP1-rs1695 AA型化疗敏感性为35.82%,低于AG/GG型58.33%(P<0.05)。XRCC1-rs25487 AA型化疗敏感性为40.00%,AG/GG型45.21%,两者差异无统计学意义(P>0.05)。GSTP1-rs1695、XRCC1-rs25487不同表型患者3年无进展生存率之间无明显差异(P>0.05)。GSTP1-rs1695 AA型3年总生存率低于AG/GG型;XRCC1-rs25487 AA型低于AG/GG型(P<0.05)。多因素COX回归分析结果显示,GSTP1-rs1695 AA型、XRCC1-rs25487 AA型均为前列腺癌患者化疗后3年总生存期的独立影响因素。结论:GSTP1-rs1695、XRCC1-rs25487基因多态性对前列腺癌患者化疗敏感性和预后均有一定影响,GSTP1-rs1695和XRCC1-rs25487 A等位基因突变均可导致更短的3年生存率,G等位基因突变可带来更好的化疗敏感性和生存期。 展开更多
关键词 前列腺癌 谷胱甘肽s转移酶p1 X线修复交错互补基因1 基因多态性 化疗敏感性
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GSTP1通过调控STAT3信号通路促进乳腺癌细胞增殖与阿霉素耐药
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作者 戴素华 嵇晓艳 戴夕超 《临床肿瘤学杂志》 CAS 2024年第2期114-119,共6页
目的 探讨谷胱甘肽S-转移酶P1(GSTP1)对人乳腺癌MCF-7细胞增殖与阿霉素耐药性的影响及其作用机制。方法 Western blotting检测野生型乳腺癌细胞MCF-7和阿霉素耐药乳腺癌细胞MCF-7/ADR中的GSTP1表达量,通过在MCF-7细胞中转染Flag-GSTP1... 目的 探讨谷胱甘肽S-转移酶P1(GSTP1)对人乳腺癌MCF-7细胞增殖与阿霉素耐药性的影响及其作用机制。方法 Western blotting检测野生型乳腺癌细胞MCF-7和阿霉素耐药乳腺癌细胞MCF-7/ADR中的GSTP1表达量,通过在MCF-7细胞中转染Flag-GSTP1质粒过表达GSTP1,在MCF-7/ADR细胞中转染GSTP1敲低慢病毒(shGSTP1)干扰GSTP1表达;平板克隆形成实验、CCK-8法和流式细胞术检测转染后乳腺癌细胞的增殖能力、阿霉素耐药性及凋亡水平的变化。Western blotting检测GSTP1表达水平的变化对STAT3通路激活的影响。结果 GSTP1在MCF-7细胞中表达量极低,且显著低于MCF-7/ADR细胞系。GSTP1过表达的MCF-7/ADR细胞克隆形成数量显著多于野生型MCF-7细胞(P<0.05)。过表达GSTP1显著提升了MCF-7细胞的增殖能力,而在MCF-7/ADR细胞系干扰GSTP1表达水平后显著抑制了细胞增殖能力(P<0.05)。CCK-8结果显示,在0.1、1、10、50μmol/ml不同浓度的阿霉素处理下,GSTP1表达水平与MCF-7细胞对阿霉素的耐药性呈正相关(P<0.05)。流式细胞术检测结果显示,GSTP1过表达组(Flag-GSTP1)和对照组(Flag)的凋亡率分别为(11.41±1.16)%和(21.1±1.72)%,GSTP1过表达显著抑制了阿霉素诱导的细胞凋亡(P<0.05)。Western blotting检测结果显示,GSTP1的过表达激活了STAT3信号通路,同时在MCF-7/ADR细胞系中抑制STAT3显著降低了GSTP1的表达水平(P<0.05)。结论 GSTP1通过上调STAT3表达调节乳腺癌细胞MCF-7的增殖能力和对阿霉素的耐药性。 展开更多
关键词 乳腺癌 谷胱甘肽s转移酶p1 增殖 阿霉素耐药
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槐耳多糖调节SPHK1/S1P/S1PR3信号通路对宫颈癌细胞恶性生物学行为的影响
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作者 李丽品 马素艳 安入征 《河北医学》 CAS 2024年第3期411-416,共6页
目的:探究槐耳多糖(HP)调节SPHK1/S1P/S1PR3信号通路对宫颈癌细胞恶性生物学行为的影响。方法:MTT检测槐耳多糖(0、25、50、100、200、400μg/mL)处理的宫颈癌细胞活力,筛选最佳药物浓度。实验分为对照组(Control组)、槐耳多糖低、中、... 目的:探究槐耳多糖(HP)调节SPHK1/S1P/S1PR3信号通路对宫颈癌细胞恶性生物学行为的影响。方法:MTT检测槐耳多糖(0、25、50、100、200、400μg/mL)处理的宫颈癌细胞活力,筛选最佳药物浓度。实验分为对照组(Control组)、槐耳多糖低、中、高浓度组(HP-L、HP-M、HP-H组)和槐耳多糖高浓度+SphK1激活剂K6PC-5组(HP-H+K6PC-5组),观察细胞增殖、迁移和侵袭情况;western blot检测SPHK1、S1P、S1PR3、Snail、N-cadherin、E-cadherin蛋白水平。结果:处理24、48、72h后,与0μg/mL比较,50μg/mL、100μg/mL、200μg/mL和400μg/mL的HP处理的细胞活力显著降低(P<0.05)。HP-L组、HP-M组和HP-H组细胞Edu阳性率、侵袭细胞数、划痕愈合率及Snail、N-cadherin、SPHK1、S1P、S1PR3水平显著低于Control组(P<0.05),E-cadherin水平显著升高(P<0.05)。HP-H+K6PC-5组细胞Edu阳性率、侵袭细胞数、划痕愈合率及Snail、N-cadherin、SPHK1、S1P、S1PR3水平显著高于HP-H组(P<0.05),E-cadherin水平显著降低(P<0.05)。结论:HP可能通过抑制SPHK1/S1P/S1PR3信号通路抑制宫颈癌细胞的增殖、侵袭和迁移。 展开更多
关键词 槐耳多糖 spHK1/s1p/s1pR3信号通路 宫颈癌 恶性生物学行为
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吴茱萸碱调节SphK1/S1P信号通路对慢性肾衰竭大鼠肾纤维化的影响
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作者 邹鑫 于冰 +2 位作者 徐龙辉 马俊伟 刘秀娟 《广州中医药大学学报》 CAS 2024年第6期1560-1566,共7页
【目的】探讨吴茱萸碱调节鞘氨醇激酶1(SphK1)/S1P信号通路对慢性肾衰竭(CRF)大鼠肾纤维化的影响。【方法】通过饲喂0.5%腺嘌呤饲料建立CRF大鼠模型。将造模后的大鼠随机分为模型组,吴茱萸碱低、高剂量组,尿毒清颗粒组及吴茱萸碱高剂量+... 【目的】探讨吴茱萸碱调节鞘氨醇激酶1(SphK1)/S1P信号通路对慢性肾衰竭(CRF)大鼠肾纤维化的影响。【方法】通过饲喂0.5%腺嘌呤饲料建立CRF大鼠模型。将造模后的大鼠随机分为模型组,吴茱萸碱低、高剂量组,尿毒清颗粒组及吴茱萸碱高剂量+K6PC-5(SphK1激活剂)组,另设正常组。干预结束,检测24 h尿蛋白(24 h-UTP)及血清尿素氮(BUN)、血清肌酐(SCr)水平,酶联免疫吸附分析(ELISA)检测大鼠血清中单核细胞趋化因子1(MCP-1)、白细胞介素6(IL-6)水平,苏木素-伊红(HE)染色法、Masson染色法观察肾组织病理学变化并计算胶原容积分数(CVF),实时定量聚合酶链反应(qRT-PCR)法检测肾组织中转化生长因子β1(TGF-β1)、Ⅳ型胶原(COL-Ⅳ)mRNA表达,Western Blot法检测肾组织中SphK1、S1P蛋白表达。【结果】与正常组比较,模型组肾组织出现明显炎性浸润及胶原纤维沉积,肾小球数量减少,SCr、BUN、24 h-UTP,IL-6、MCP-1,CVF,TGF-β1、COL-ⅣmRNA,SphK1、S1P表达水平显著增加(P<0.05);与模型组比较,吴茱萸碱低、高剂量组及尿毒清颗粒组肾组织病理改变得到改善,SCr、BUN、24 h-UTP,IL-6、MCP-1,CVF,TGF-β1、COL-ⅣmRNA,SphK1、S1P表达水平显著降低(P<0.05);各指标组间比较,吴茱萸碱低剂量组与吴茱萸碱高剂量组差异有统计学意义(P<0.05),吴茱萸碱高剂量组与尿毒清颗粒差异无统计学意义(P>0.05);与吴茱萸碱高剂量组比较,吴茱萸碱高剂量+K6PC-5组肾组织病理改变进一步加重,各指标的改善作用均被逆转(P<0.05)。【结论】吴茱萸碱可通过抑制SphK1/S1P信号通路改善CRF大鼠肾纤维化。 展开更多
关键词 吴茱萸碱 慢性肾衰竭 肾纤维化 sphK1/s1p信号通路 大鼠
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Sphingosine-1-Phosphate Protects Against the Development of Cardiac Remodeling via Sphingosine Kinase 2 and the S1PR2/ERK Pathway
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作者 Hui YAN Hu ZHAO +4 位作者 Shao-wei YI Hang ZHUANG Dao-wen WANG Jian-gang JIANG Gui-fen SHEN 《Current Medical Science》 SCIE CAS 2022年第4期702-710,共9页
Objective:Cardiac remodeling is a common pathological change in various cardiovascular diseases and can ultimately result in heart failure.Thus,there is an urgent need for more effective strategies to aid in cardiac p... Objective:Cardiac remodeling is a common pathological change in various cardiovascular diseases and can ultimately result in heart failure.Thus,there is an urgent need for more effective strategies to aid in cardiac protection.Our previous work found that sphingosine-1-phosphate(S1P)could ameliorate cardiac hypertrophy.In this study,we aimed to investigate whether S1P could prevent cardiac fibrosis and the associated mechanisms in cardiac remodeling.Methods:Eight-week-old male C57BL/6 mice were randomly divided into a sham,transverse aortic constriction(TAC)or a TAC+S1P treatment group.Results:We found that S1P treatment improved cardiac function in TAC mice and that the cardiac fibrosis ratio in the TAC+S1P group was significantly lower and was accompanied by a decrease inα-smooth muscle actin(α-SMA)and collagen type I(COL I)expression compared with the TAC group.We also found that one of the key S1P enzymes,sphingosine kinase 2(SphK2),which was mainly distributed in cytoblasts,was downregulated in the cardiac remodeling case and recovered after S1P treatment in vivo and in vitro.In addition,our in vitro results showed that S1P treatment activated extracellular regulated protein kinases(ERK)phosphorylation mainly through the S1P receptor 2(S1PR2)and spurred p-ERK transposition from the cytoplasm to cytoblast in H9c2 cells exposed to phenylephrine.Conclusion:These findings suggest that SphK2 and the S1PR2/ERK pathway may participate in the anti-remodeling effect of S1P on the heart.This work therefore uncovers a novel potential therapy for the prevention of cardiac remodeling. 展开更多
关键词 sphingosine-l-phosphate cardiac remodeling sphingosine kinase 2 sphingosine-1-phosphate receptor extracellular regulated protein kinase
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Expressions of Sphingosine-1-phosphate (S1P) Receptors, Sphingosine Kinases in Malignant Bone and Soft Tissue Tumors, and The role of Sphingosine Kinase-1 in Growth of MFH Cell Lines
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作者 Shin-ichiro Kishimoto Toshihiro Akisue +8 位作者 Kenta Kishimoto Hitomi Hara Masaya Imabori Yoshiyuki Okada Naomasa Fukase Teruya Kawamoto Ikuo Fujita Takuya Fujimoto Masahiro Kurosaka 《Journal of Cancer Therapy》 2011年第2期288-294,共7页
Sphingolipids are ubiquitous components of cell membranes. Their metabolites ceramide, sphingosine, and sphingosine-1-phosphate (S1P) have important physiological functions, including regulation of cell growth and sur... Sphingolipids are ubiquitous components of cell membranes. Their metabolites ceramide, sphingosine, and sphingosine-1-phosphate (S1P) have important physiological functions, including regulation of cell growth and survival. S1P is generated by phosphorylation of sphingosine catalyzed by sphingosine kinase-1 (SPHK1). The purpose of this study is to explore the roles of S1P, S1P receptors, and sphingosine kinases in malignant musculoskeletal tumors. Twenty-one tumor samples (7 liposarcomas, 3 chondrosarcomas, 6 osteosarcomas, 5 MFH) obtained at open biopsy, and four human MFH cell lines (Nara H, Nara F, TNMY1, GBS-1) were used. We examined the mRNA expression of S1P receptors by RT-PCR, and the expression levels of SPHK by Real-time PCR. We used 4 MFH cell lines to analyze SPHK1 proteins by Western blotting. SPHK1 siRNA was transfected into MFH cell lines by lipofection method. Cell proliferation (control and transfected with siRNA) was assayed using WST-8 (Cell Counting Kit-8) assay. All high grade malignant tumors expressed S1P1, S1P2, S1P3 receptors, whereas the expression of S1P1 receptor was detected in 50% of low-grade malignant tumors, S1P2 receptor in 30%, and S1P3 in 50%. No statistically significant difference was found in the expression level of SPHK1 between high-grade and low-grade malignant tumors by Real-time PCR. By results of Western blotting, proteins of SPHK1 were expressed in all MFH cell lines. In MFH cell lines, transfection with SPHK1 siRNA oligonucleotides resulted in approximately 50 to 80% suppression of SPHK1 mRNA expression as determined by real-time PCR. Down-regulation of SPHK1 with small interfering RNA significantly reduced SPHK1 protein levels by Western blotting. Knock down of SPHK1 expression significantly decreased cell proliferation of all MFH cells. These results suggest that the expression of S1P receptors may play an important role for cell proliferation and may correlate with histologic grade in malignant bone and soft tissue tumors, and that SPHK1 may be one of essential molecules for cell proliferation in MFH cell lines. 展开更多
关键词 sARCOMA sphingosine-1-phosphate s1p Receptor sphingosine Kinase MIB-1 MFH
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Role of sphingosine kinases and sphingosine 1-phosphate in mediating adipogenesis
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作者 Lucy D. Mastrandrea 《Journal of Diabetes Mellitus》 2013年第2期52-61,共10页
Recent Background: Development of obesity involves promotion of preadipocyte differrentiation. This study investigated the role that sphingosine kinases (SPHK) and ceramide-derived sphingosine 1-phosphate (S1P) play i... Recent Background: Development of obesity involves promotion of preadipocyte differrentiation. This study investigated the role that sphingosine kinases (SPHK) and ceramide-derived sphingosine 1-phosphate (S1P) play in adipocyte terminal differentiation. Materials and Methods: The mouse 3T3-L1 cell line was used as a model for adipogenesis. Cells were harvested at specific time points after initation of differentiation, and SPHK activity was measured. 3T3-L1 cells were treated with S1P and expression of early adipogenesis transcription markers was measured by real time PCR. The expression of S1P-receptors (S1PRs) during differentiation was measured. Results: SPHK activity is induced when 3T3-L1 cells are treated with insulin, dexamethasone, and isobutylmethylxanthine to induce differentiation. SPHK1 is active in preadipocytes and early in the differentiation process. Both SPHK1 and SPHK2 isozymes contribute to activity in differentiated adipocytes. Inhibition of SPHK1 attenuates adipocyte differentiation;however, extracellular S1P does not rescue the effect of SPHK1 inhibition on adipogenesis. Although treatment of preadipocytes with S1P induced message expression of the early adipogenesis transcription factor CC AAT/ binding proteinalpha, continued treatment did not fully support the development of differentiated adipocytes. Sphingosine 1-phosphate receptors (S1PRs) are expressed in preadipocytes and message expression declines markedly during adipocyte differentiation. Conclusion: These results demonstrate that the contribution of SPHK and S1P to adipogenesis is mediated primarily through biphasic activation of SPHK1 and 2 with extracellular S1P and S1PRs playing little role during preadipocyte differentiation. 展开更多
关键词 ADIpOCYTE ADIpOGENEsIs Obesity sphingosine KINAsE 3T3-L1 Cells sphingosine 1-phosphate sphingosine 1-phosphate Receptor
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Sphingosine 1-phosphate in inflammation
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作者 Lijuan Li Lixia An +1 位作者 Lifang Li Yongjuan Zhao 《Journal of Clinical and Nursing Research》 2020年第6期20-22,共3页
Sphingolipids are formed via the metabolism of sphingomyelin,aconstituent of the plasma membrane.or by denovosynthesis.Enzymatic pathways result in the formation of sevenal different lipid meiators,which are knowm to ... Sphingolipids are formed via the metabolism of sphingomyelin,aconstituent of the plasma membrane.or by denovosynthesis.Enzymatic pathways result in the formation of sevenal different lipid meiators,which are knowm to bave important roles in many elllar proceses.imcluding polfeatioe,apoptosis and migation Several studies nDowr suggest that these shingolipid mediators,inchding cenamide,ceramside i-pbosphate and sphingosine 1-pbosphate(SIP).are likely to have a integral role in infamation.This can involve,for example activation of po-inammatory transcription factors in different cell types and indiuction of cyloxygenase-2.leading t如o productio of pro-inamatory prostaglandins.The mode of action of each sphingolipid is different.Increased ceramide production leads to the formation of ceramide-rich areas of the membnane.which may assemble sigalling compleses,whereas SIP acts via b-affnity G-protein-coupled SIP receptors on the plasma membrane.Recent studies bave demonstated that in vitro efects of sphingolipids o infammation can translate into in vivo models.This review will higblight the areas of research where spbingolipids ae involved in infamomation and the mecharisms of acion of each mediator.In adirion,the therpeutic poternial of dinugs that alter sphingolipid actions mill be exmined with reference to disease states,such as asthma and infammatary bowel disease,which invove importanot ifmaxmsutory components.A signifcant body of research now indicates that sphingolipids ure intimately inolved in the infammatory process and recent studies have demonstated that these lipids.together with associated enzymes and receptors,can provide effective drug targets for the treatment of pathological inflammation. 展开更多
关键词 Infammation spHINGOLIpIDs sphingosine 1-phosphate
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S1P信号通路在眼部疾病的研究进展
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作者 夏敏(综述) 薛劲松 蒋沁(审校) 《中华实验眼科杂志》 CAS CSCD 北大核心 2023年第7期702-707,共6页
鞘脂代谢广泛参与不同细胞的功能调控,其在眼组织中也起重要作用。1-磷酸鞘氨醇(S1P)是鞘脂代谢的终末产物,并已经证实在眼科疾病的发生和发展中起重要的作用。S1P信号通路广泛存在于眼部各类细胞中,参与调控细胞增生、分化、迁移和凋... 鞘脂代谢广泛参与不同细胞的功能调控,其在眼组织中也起重要作用。1-磷酸鞘氨醇(S1P)是鞘脂代谢的终末产物,并已经证实在眼科疾病的发生和发展中起重要的作用。S1P信号通路广泛存在于眼部各类细胞中,参与调控细胞增生、分化、迁移和凋亡等过程。S1P通过与相应受体结合激活多种信号通路,进而在眼部发挥广泛的生理及病理性作用。近年来研究发现,S1P信号通路既可以介导眼内血管和神经的正常发育、维持眼部组织正常结构和参与眼内脂质代谢,也与免疫相关炎症反应、病理性纤维化和细胞功能屏障破坏等相关病理改变有密切关系。本文主要对S1P信号通路的基本概况、眼部生理性作用以及在眼前节和眼后节疾病病理改变中的作用进行综述,为眼科疾病的治疗提供新的方向和作用靶点。 展开更多
关键词 1-磷酸鞘氨醇 s1p受体 眼科疾病 调控作用
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