Pharmacological targeting cGAS/STING/NF-κB axis by tryptanthrin induces microglia polarization toward M2 phenotype and promotes functional recovery in a mouse model of spinal cord injury

The M1/M2 phenotypic shift of microglia after spinal cord injury plays an important role in the regulation of neuroinflammation during the secondary injury phase of spinal cord injury.Regulation of shifting microglia polarization from M1(neurotoxic and proinflammatory type)to M2(neuroprotective and anti-inflammatory type)after spinal cord injury appears to be crucial.Tryptanthrin possesses an anti-inflammatory biological function.However,its roles and the underlying molecular mechanisms in spinal cord injury remain unknown.In this study,we found that tryptanthrin inhibited microglia-derived inflammation by promoting polarization to the M2 phenotype in vitro.Tryptanthrin promoted M2 polarization through inactivating the cGAS/STING/NF-κB pathway.Additionally,we found that targeting the cGAS/STING/NF-κB pathway with tryptanthrin shifted microglia from the M1 to M2 phenotype after spinal cord injury,inhibited neuronal loss,and promoted tissue repair and functional recovery in a mouse model of spinal cord injury.Finally,using a conditional co-culture system,we found that microglia treated with tryptanthrin suppressed endoplasmic reticulum stress-related neuronal apoptosis.Taken together,these results suggest that by targeting the cGAS/STING/NF-κB axis,tryptanthrin attenuates microglia-derived neuroinflammation and promotes functional recovery after spinal cord injury through shifting microglia polarization to the M2 phenotype.

Dynamic Interaction Analysis of Coupled Axial-Torsional-Lateral Mechanical Vibrations in Rotary Drilling Systems

Maintaining the integrity and longevity of structures is essential in many industries,such as aerospace,nuclear,and petroleum.To achieve the cost-effectiveness of large-scale systems in petroleum drilling,a strong emphasis on structural durability and monitoring is required.This study focuses on the mechanical vibrations that occur in rotary drilling systems,which have a substantial impact on the structural integrity of drilling equipment.The study specifically investigates axial,torsional,and lateral vibrations,which might lead to negative consequences such as bit-bounce,chaotic whirling,and high-frequency stick-slip.These events not only hinder the efficiency of drilling but also lead to exhaustion and harm to the system’s components since they are difficult to be detected and controlled in real time.The study investigates the dynamic interactions of these vibrations,specifically in their high-frequency modes,usingfield data obtained from measurement while drilling.Thefindings have demonstrated the effect of strong coupling between the high-frequency modes of these vibrations on drilling sys-tem performance.The obtained results highlight the importance of considering the interconnected impacts of these vibrations when designing and implementing robust control systems.Therefore,integrating these compo-nents can increase the durability of drill bits and drill strings,as well as improve the ability to monitor and detect damage.Moreover,by exploiting thesefindings,the assessment of structural resilience in rotary drilling systems can be enhanced.Furthermore,the study demonstrates the capacity of structural health monitoring to improve the quality,dependability,and efficiency of rotary drilling systems in the petroleum industry.

Research status and prospects of the fractal analysis of metal material surfaces and interfaces

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine properties.Fractal analysis has been used to characterize the shapes of metal materials at various scales and dimensions.Conventional methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and interfaces.However,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal materials.From the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear surfaces.The relationship between the fractal dimensions and properties of metal material surfaces and interfaces is summarized.Starting from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be developed.It is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

Inhibition of the cGAS–STING pathway:contributing to the treatment of cerebral ischemia-reperfusion injury

The cGAS–STING pathway plays an important role in ischemia-reperfusion injury in the heart,liver,brain,and kidney,but its role and mechanisms in cerebral ischemia-reperfusion injury have not been systematically reviewed.Here,we outline the components of the cGAS–STING pathway and then analyze its role in autophagy,ferroptosis,cellular pyroptosis,disequilibrium of calcium homeostasis,inflammatory responses,disruption of the blood–brain barrier,microglia transformation,and complement system activation following cerebral ischemia-reperfusion injury.We further analyze the value of cGAS–STING pathway inhibitors in the treatment of cerebral ischemia-reperfusion injury and conclude that the pathway can regulate cerebral ischemia-reperfusion injury through multiple mechanisms.Inhibition of the cGAS–STING pathway may be helpful in the treatment of cerebral ischemia-reperfusion injury.

Antioxidant and lipoxygenase inhibitory properties of a novel flavonoid from Pistacia chinensis Bunge and its molecular docking analysis

Background:Pistacia chinensis Bunge has been traditionally used to manage various conditions,including asthma,pain,inflammation,hepatoprotection,and diabetes.The study was conducted to investigate the antioxidant and anti-lipoxygenase(LOX)properties of the isolated compound 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one from Pistacia chinensis.Methods:LOX assay and antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl(DPPH)assay were performed.Molecular docking studies were conducted using a molecular operating environment.Results:The LOX assay revealed significant inhibitory effects at 0.2µM concentration,with an IC50 value of 37.80µM.The antioxidant effect demonstrated dose-dependency across 5 to 100µg/mL concentrations,reaching 93.09%at 100µg/mL,comparable to ascorbic acid’s 95.43%effect.Molecular docking studies highlighted strong interactions with the lipoxygenase enzyme,presenting an excellent docking score of-10.98 kcal/mol.Conclusion:These findings provide valuable insights into Pistacia chinensis’chemical components and biological effects,reinforcing its traditional medicinal applications.

Prenatal ultrasonography and genetic analysis of fetal cleidocranial dysplasia:A case report

BACKGROUND Cleidocranial dysplasia(CCD)is an infrequent clinical condition with an autosomal dominant inheritance pattern.It is characterized by abnormal clavicles,patent sutures and fontanelles,supernumerary teeth,and short stature.Approximately 60%-70%of patients with CCD have mutations in the RUNX family transcription factor 2 gene.However,prenatal diagnosis of CCD is difficult when the family history is unknown.CASE SUMMARY We report a rare case of fetal CCD with an unknown family history,confirmed by prenatal ultrasonography and genetic testing at a gestational age of 16 weeks.The genetic reports indicated that the fetus carried pathogenic mutations in the RUNX family transcription factor 2 gene(c.674G>A).After careful consideration,the pregnant woman and her family decided to continue the pregnancy.CONCLUSION Definitive prenatal diagnosis of CCD should include family history,ultrasound diagnosis,and genetic analysis,especially if family history is unknown.

Retrospective analysis of pathological types and imaging features in pancreatic cancer: A comprehensive study

BACKGROUND Pancreatic cancer remains one of the most lethal malignancies worldwide,with a poor prognosis often attributed to late diagnosis.Understanding the correlation between pathological type and imaging features is crucial for early detection and appropriate treatment planning.AIM To retrospectively analyze the relationship between different pathological types of pancreatic cancer and their corresponding imaging features.METHODS We retrospectively analyzed the data of 500 patients diagnosed with pancreatic cancer between January 2010 and December 2020 at our institution.Pathological types were determined by histopathological examination of the surgical spe-cimens or biopsy samples.The imaging features were assessed using computed tomography,magnetic resonance imaging,and endoscopic ultrasound.Statistical analyses were performed to identify significant associations between pathological types and specific imaging characteristics.RESULTS There were 320(64%)cases of pancreatic ductal adenocarcinoma,75(15%)of intraductal papillary mucinous neoplasms,50(10%)of neuroendocrine tumors,and 55(11%)of other rare types.Distinct imaging features were identified in each pathological type.Pancreatic ductal adenocarcinoma typically presents as a hypodense mass with poorly defined borders on computed tomography,whereas intraductal papillary mucinous neoplasms present as characteristic cystic lesions with mural nodules.Neuroendocrine tumors often appear as hypervascular lesions in contrast-enhanced imaging.Statistical analysis revealed significant correlations between specific imaging features and pathological types(P<0.001).CONCLUSION This study demonstrated a strong association between the pathological types of pancreatic cancer and imaging features.These findings can enhance the accuracy of noninvasive diagnosis and guide personalized treatment approaches.

Prognostic significance of CDKN2A expression in colon adenocarcinoma: insights from TCGA analysis

Background:The cyclin-dependent kinase inhibitor 2a(CDKN2A)gene,identified as the multiple tumor suppressor gene,functions as a regulatory gene implicated in cancer pathogenesis.Its significance lies in its pivotal involvement in the genesis of various tumors;notwithstanding,the precise connection between CDKN2A and c olon adenocarcinoma(COAD)remains undisclosed.Methods:The objective of this research was to assess the predictive importance of CDKN2A in COAD by analyzing data from The Cancer Genome Atlas database.Logistic regression,signed rank test,Wilcoxon test,and Kruskal-Wallis test were used to examine CDKN2A expression levels and clinicopathological features.Univariate and multivariate Cox r egression analyses and Kaplan-Meier analysis found prognostic variables.Additionally,gene set enrichment analysis identified key CDKN2A expression pathways.The study additionally examined CDKN2A expression with tumor immune infiltration using The Cancer Genome Atlas data and single sample gene set enrichment analysis.Results:The results of this investigation indicated a substantial connection between higher CDKN2A expression and negative outcomes in terms of overall survival and disease-related survival among COAD patients.Gene set enrichment analysis indicated a tight link between CDKN2A and both the cell cycle and hedgehog signaling pathways.Subsequent evaluation employing single sample gene set enrichment analysis demonstrated a positive link between CDKN2A expression with infiltration by iDCs,whereas a negative correlation was detected with infiltration by helper T cells.Conclusion:In conclusion,the present study gives strong data supporting the predictive value of CDKN2A and its possible usefulness as a biomarker for COAD.Additionally,our results show a reasonable link between CDKN2A expression and immune influx in COAD,putting light on the role of CDKN2A in the control of the tumor microenvironment.Nevertheless,additional studies are needed to confirm the underlying mechanisms of these relationships and to discover the therapeutic possibilities of targeting CDKN2A in the treatment of COAD.

Comprehensive bibliometric analysis of pharmacotherapy for bipolar disorders:Present trends and future directions

BACKGROUND Bipolar disorder(BD)is a severe mental illness characterized by significant mood swings.Effective drug treatment modalities are crucial for managing BD.AIM To analyze the current status and future trends of global research on BD drug treatment over the last decade.METHODS The Web of Science Core Collection database spanning from 2015 to 2024 was utilized to retrieve literature related to BD drug treatment.A total of 2624 articles were extracted.Data visualization and analysis were conducted using CiteSpace,VOSviewer,Pajek,Scimago Graphica,and R-studio bibliometrix to identify RESULTS The United States,China,and the United Kingdom have made the most significant contributions to research on BD drug treatment and formed notable research collaboration networks.The University of Pittsburgh,Massachusetts General Hospital,and the University of Michigan have been identified as the major research institutions in this field.The Journal of Affective Disorders is the most influential journal.A keyword analysis revealed research hotspots related to clinical symptoms,drug efficacy,and genetic mechanisms.A citation analysis identified the management guidelines published by Yatham et al in 2018 as the most cited paper.CONCLUSION This study provides a detailed overview of the field of BD drug treatment,highlighting key contributors,research hotspots,and future directions.The study findings can be employed as a reference for future research and policymaking,which may enable further development and optimization of BD pharmacotherapy.

Targeted gene sequencing and bioinformatics analysis of patients with gallbladder neuroendocrine carcinoma:A case report

BACKGROUND Gallbladder neuroendocrine carcinoma(NEC)represents a subtype of gallbladder malignancies characterized by a low incidence,aggressive nature,and poor prognosis.Despite its clinical severity,the genetic alterations,mechanisms,and signaling pathways underlying gallbladder NEC remain unclear.CASE SUMMARY This case study presents a rare instance of primary gallbladder NEC in a 73-year-old female patient,who underwent a radical cholecystectomy with hepatic hilar lymphadenectomy and resection of liver segments IV-B and V.Targeted gene sequencing and bioinformatics analysis tools,including STRING,GeneMANIA,Metascape,TRRUST,Sangerbox,cBioPortal and GSCA,were used to analyze the biological functions and features of mutated genes in gallbladder NEC.Twelve mutations(APC,ARID2,IFNA6,KEAP1,RB1,SMAD4,TP53,BTK,GATA1,GNAS,and PRDM3)were identified,and the tumor mutation burden was determined to be 9.52 muts/Mb via targeted gene sequencing.A protein-protein interaction network showed significant interactions among the twelve mutated genes.Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses were used to assess mutation functions and pathways.The results revealed 40 tumor-related pathways.A key regulatory factor for gallbladder NEC-related genes was identified,and its biological functions and features were compared with those of gallbladder carcinoma.CONCLUSION Gallbladder NEC requires standardized treatment.Comparisons with other gallbladder carcinomas revealed clinical phenotypes,molecular alterations,functional characteristics,and enriched pathways.

Multilevel analysis of the central-peripheral-target organ pathway:contributing to recovery after peripheral nerve injury

Peripheral nerve injury is a common neurological condition that often leads to severe functional limitations and disabilities.Research on the pathogenesis of peripheral nerve injury has focused on pathological changes at individual injury sites,neglecting multilevel pathological analysis of the overall nervous system and target organs.This has led to restrictions on current therapeutic approaches.In this paper,we first summarize the potential mechanisms of peripheral nerve injury from a holistic perspective,covering the central nervous system,peripheral nervous system,and target organs.After peripheral nerve injury,the cortical plasticity of the brain is altered due to damage to and regeneration of peripheral nerves;changes such as neuronal apoptosis and axonal demyelination occur in the spinal cord.The nerve will undergo axonal regeneration,activation of Schwann cells,inflammatory response,and vascular system regeneration at the injury site.Corresponding damage to target organs can occur,including skeletal muscle atrophy and sensory receptor disruption.We then provide a brief review of the research advances in therapeutic approaches to peripheral nerve injury.The main current treatments are conducted passively and include physical factor rehabilitation,pharmacological treatments,cell-based therapies,and physical exercise.However,most treatments only partially address the problem and cannot complete the systematic recovery of the entire central nervous system-peripheral nervous system-target organ pathway.Therefore,we should further explore multilevel treatment options that produce effective,long-lasting results,perhaps requiring a combination of passive(traditional)and active(novel)treatment methods to stimulate rehabilitation at the central-peripheral-target organ levels to achieve better functional recovery.

老年冠心病病人应用基于CGA的专科干预与反馈式健康宣教的效果观察

目的:探讨基于老年综合评估(CGA)的专科干预结合反馈式健康宣教在老年冠心病病人中的应用效果。方法:选取2020年10月—2022年10月本院收治的100例老年冠心病病人,采用随机数字表法分为甲组和乙组,各50例。甲组采用常规老年护理及健康教育,乙组予以基于CGA的专科干预联合反馈式健康宣教。观察两组应对方式、健康教育需求、自我管理能力及心脏不良事件发生情况。结果:与干预前相比,两组随访6个月的医学应对方式问卷(MCMQ)面对维度评分均升高,回避、屈服维度评分均降低,且乙组面对维度评分高于甲组,回避、屈服维度评分低于甲组,差异有统计学意义(P<0.05);两组随访6个月的心脏康复信息需求表(INCR)评分均低于干预前,冠心病自我管理量表(CSMS)评分均高于干预前,且乙组INCR评分较甲组低,CSMS评分较甲组高,差异有统计学意义(P<0.05);乙组随访6个月内心脏不良事件发生率低于甲组,差异有统计学意义(P<0.05)。结论:CGA下专科干预联合反馈式健康宣教能够改善老年冠心病病人对应对方式,满足其心脏康复健康教育需求,有助于提高病人自我管理能力,改善心脏不良事件控制效果。

易黄汤对脾虚湿热型宫颈癌小鼠皮下移植瘤cGAS/STING/IRF-3信号通路及相关免疫因子的影响

目的探讨易黄汤对脾虚湿热型宫颈癌小鼠皮下移植瘤环磷酸鸟苷-腺苷酸合成酶(cGAS)/干扰素刺激基因(STING)/干扰素调节因子-3(IRF-3)信号通路及相关免疫因子的影响。方法选取6~8周龄SPF级雌性BALB/c小鼠50只,随机分为造模组40只和空白组10只。空白组正常喂养,造模组通过湿热环境及高脂高糖饮食建立脾虚湿热型小鼠模型,当小鼠出现嗜卧懒动、易激惹、形体消瘦、进食及饮水量减少、毛发疏松粗糙、粪便时干时溏、肛温稍有增加则认为造模成功。将2×106个/mL对数生长期HPV16阳性人宫颈癌CaSki细胞悬液0.2 mL接种于上述50只小鼠右腋下,5~7 d后可触及直径≥5 mm结节时即认为皮下移植瘤造模成功。将造模组按随机数字表法分为模型组和易黄汤低剂量、中剂量、高剂量组,每组10只。低、中、高剂量组均按体质量40.0 mL/kg分别予含生药浓度0.25、0.50、1.00 g/mL易黄汤药液灌胃,模型组和空白组予同等剂量生理盐水灌胃,均隔日1次,干预4周。干预后计算5组小鼠胸腺、脾脏指数和瘤质量、抑瘤率;ELISA法检测5组小鼠血清白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)水平;支链DNA信号扩增法检测5组小鼠皮下移植瘤组织HPV E6 mRNA转录水平;Western blot测定5组小鼠移植瘤组织中cGAS、STING、IRF-3蛋白表达量。结果与空白组比较,模型组胸腺和脾脏指数、IL-6、TNF-α水平显著下降(P<0.05),HPV E6 mRNA转录水平显著增加(P<0.05);易黄汤不同剂量组中以高剂量组的抑瘤率最高为(35.42±4.86)%(P<0.05);与模型组比较,低、中、高剂量组胸腺和脾脏指数、IL-6、TNF-α水平及cGAS、STING和IRF-3蛋白表达量显著增加(P<0.05),皮下移植瘤质量及HPV E6 mRNA转录水平显著降低(P<0.05),且降低程度与易黄汤剂量成正比。结论脾虚湿热能促进CaSki细胞生长、HPV表达增加,易黄汤可能通过激活cGAS/STING/IRF-3信号通路增强免疫功能,从而抑制HPV表达及宫颈癌小鼠移植瘤生长。

华裔科学家陈志坚发现感知DNA免疫监控的cGAS-STING信号通路——2024年拉斯克奖基础医学研究奖

北京时间2024年9月19日,生物医学领域重要奖项拉斯克奖(The Lasker Award)揭晓,华人学者陈志坚博士(德克萨斯大学西南医学中心)因发现感知自身及外源DNA的环鸟嘌呤-腺嘌呤核苷酸合成酶[cyclic guanosine monophosphate(GMP)-adenosine monophosphate(AMP)synthase,cGAS],阐明了DNA如何刺激免疫和炎症反应的分子机制荣获基础医学研究奖。

cGAS-STING在糖尿病及其并发症中的研究进展

cGAS-STING信号通路作为一种先天免疫系统的重要通路,可触发以Ⅰ型干扰素为代表的一系列炎症因子的表达,随着炎症因子的释放,导致胰岛β细胞功能受损和胰岛素抵抗,进而影响胰岛素的分泌,参与糖尿病及其并发症的发生发展。本文就cGAS-STING信号通路的结构和作用机制,以及cGAS-STING在糖尿病及其相关并发症中的研究进展进行综述,旨在为糖尿病及其并发症的预防治疗提供新思路。

cGAS-STING通路与老龄化疾病的研究进展

衰老是指随着年龄的增长生物体在分子、细胞、组织和系统水平上损伤的积累和功能的减退,逐渐趋向死亡的一种现象。衰老是导致年龄相关性疾病(aging-related diseases,ARDs)发生、发展和死亡的重要危险因素。衰老具有的特征有基因组不稳定、端粒损耗、表观遗传改变、蛋白质稳态丧失、大自噬失能、营养感应失调、线粒体功能障碍、细胞衰老、干细胞耗竭、细胞间通讯改变、慢性炎症和生态失调等。其中,细胞衰老主要由端粒缩短、DNA损伤、氧化应激以及细胞周期阻滞等因素所引起。DNA损伤累积导致促炎因子的过表达,包括各种细胞因子、趋化因子,统称为衰老相关分泌表型(senescence-associated secretory phenotype,SASP)。最近诸多科学研究表明,cGAS-STING通路会在衰老细胞中激活,从而进一步触发SASP表型。本文将对cGAS与细胞衰老的关系、SASP的调控以及相关老龄化疾病的影响进行综述。

CGA护理模式在老年冠心病患者PCI术后中的应用效果研究

研究CGA护理模式对老年冠心病心绞痛患者PCI术后应对方式及生活质量的影响。方法 选择2021年1月-2022年7月我院收治冠心病心绞痛患者100例,掷硬币法分两组。对照组标准程序化护理,观察组CGA护理。结果 干预后观察组MCMQ回避和屈服维度、LVEDD、不良事件低于对照组,P<0.05。MCMQ面对维度、6MWT、LVEF、生活质量和疾病管理能力高于对照组,P<0.05。结论 CGA护理模式可以有效地增强老年冠心病心绞痛患者的应对方式。

cGAS-STING信号通路调节剂在免疫治疗中的研究进展

环鸟嘌呤-腺嘌呤核苷酸合成酶(cGAS)-干扰素基因刺激蛋白(STING)信号通路感知细胞质中的异常双链DNA后,诱导Ⅰ型干扰素(IFN-Ⅰ)和促炎细胞因子表达,从而激活宿主的免疫应答,增强机体抗肿瘤免疫反应和抗病原体感染。但是,cGAS-STING信号通路的持续激活会驱动自身免疫性疾病、衰老相关炎症和神经退行性病变等疾病。本文阐述了cGAS-STING信号通路参与调控多种免疫相关性疾病发生发展的机制,重点回顾了STING激动剂、cGAS抑制剂以及STING抑制剂的研发进展,为cGAS-STING调节剂的研发提供更多理论参考。

桂枝芍药知母汤抑制cGAS/STING/NF-κB通路对类风湿关节炎大鼠炎症活动的影响

目的基于环状GMP-AMP合成酶(cGAS)/干扰素基因刺激因子(STING)/核因子-κB(NF-κB)通路探讨桂枝芍药知母汤对类风湿关节炎大鼠炎症活动的影响及机制。方法取70只Wistar大鼠,随机选择10只作为正常组,其余60只大鼠制备胶原诱导性关节炎模型。将造模成功大鼠随机分为模型组、甲氨蝶呤组、雷公藤组及桂芍知母汤低、中、高剂量组,每组10只。甲氨蝶呤组给予0.104 mg/mL的甲氨蝶呤片混悬液灌胃,1次/周,其余时间每天给予蒸馏水灌胃1次;雷公藤组给予0.625 mg/mL的雷公藤多甙片混悬液灌胃,桂芍知母汤低、中、高剂量组分别给予0.958 g/mL、1.916 g/mL、2.874 g/mL的桂枝芍药知母汤灌胃,正常组、模型组给予蒸馏水灌胃,均1次/d。各组均干预4周。测量各组大鼠干预1,2,3,4周末足趾肿胀程度,并计算关节炎指数(AI);末次干预结束后,ELISA法检测血清白细胞介素-1β(IL-1β)、白细胞介素-17(IL-17)、肿瘤坏死因子-α(TNF-α)水平,Western blot法检测滑膜组织中cGAS、STING、NF-κB p65、IκBα蛋白表达情况。结果干预1,2,3,4周末,模型组大鼠的关节肿胀度均明显高于正常组(P均<0.05);随时间推移,模型组大鼠的关节肿胀度逐渐增加,各药物干预组大鼠的关节肿胀度有不同程度的降低,其中桂芍知母汤中剂量组干预4周末的关节肿胀度明显低于模型组(P<0.05)。干预1周末,各组间AI评分比较差异均无统计学意义(P均>0.05);干预2,3,4周末,桂芍知母汤高剂量组AI评分均明显低于模型组和桂芍知母汤低剂量组(P均<0.05),且桂芍知母汤高剂量组干预2周末的AI评分明显低于雷公藤组(P<0.05);干预3周末,甲氨蝶呤组、桂芍知母汤中剂量组AI评分均明显低于模型组(P均<0.05);干预4周末,甲氨蝶呤组、雷公藤组、桂芍知母汤中剂量组、桂芍知母汤低剂量组AI评分均明显低于模型组(P均<0.05)。与正常组比较,模型组血清IL-1β、IL-17、TNF-α水平及滑膜组织中cGAS、STING、NF-κB p65蛋白相对表达量均明显升高(P均<0.05),滑膜组织中IκBα蛋白相对表达量明显降低(P<0.05);与模型组比较,各药物干预组血清IL-1β、IL-17、TNF-α水平及滑膜组织中cGAS、STING、NF-κB p65蛋白相对表达量均明显降低(P均<0.05),滑膜组织中IκBα蛋白相对表达量均明显升高(P均<0.05)。桂芍知母汤高剂量组和甲氨蝶呤组血清IL-1β、IL-17和TNF-α水平及滑膜组织中cGAS、STING、NF-κB p65蛋白相对表达量均明显低于桂芍知母汤低剂量组(P均<0.05),滑膜组织中IκBα蛋白相对表达量均明显高于桂芍知母汤低剂量组(P均<0.05)。结论桂枝芍药知母汤可明显减轻类风湿关节炎大鼠关节肿胀和关节炎症,机制可能与抑制cGAS/STING/NF-κB通路,降低炎症因子水平有关。

人乳头瘤病毒16型E7基因靶向调控cGAS-STING信号通路抑制宫颈癌细胞免疫功能的研究

目的:探讨HPV16 E7靶向调控cGAS-STING信号通路对宫颈癌细胞免疫功能的影响。方法:体外构建HPV16 E7过表达和干扰质粒,转染至SiHa细胞,qPCR检测HPV16 E7 mRNA表达水平,流式细胞术检测CD95、MICA/B、CD73、CD39、CTLA-4和CD25表达。在此基础上分别转染cGAS-siRNA和STING-siRNA至SiHa细胞,CCK8检测细胞活力,流式细胞术检测细胞凋亡。qPCR和Western blot分别检测cGAS、STING、IFN-Ⅰ、HPV16 E7的mRNA及蛋白表达。流式细胞术检测细胞CD95、MICA/B、CD73、CD39、CTLA-4和CD25表达。结果:STING-siRNA+HPV16 E7过表达组CD95和MICA/B水平降低(P<0.05),CD73、CD39、CTLA-4和CD25水平升高(P<0.05)。cGAS、STING和IFN-Ⅰ蛋白表达水平降低(P<0.05)。STINGsiRNA+HPV16 E7干扰组结果与之相反。结论:HPV16 E7靶向调控cGAS-STING信号通路进而抑制宫颈癌细胞免疫功能。