用Vero-E6细胞大量增殖恙虫病立克次体的研究

目的 为了探讨建立一种简便而可靠的恙虫病立克次体增殖方法， 以得到较大量的恙虫病立克次体。方法 采用了以 Ｖｅｒｏ － Ｅ６ 细胞增殖恙虫病立克次， 并且对 Ｖｅｒｏ － Ｅ６ 感染细胞的培养条件进行了改进。结果 成功地使恙虫病立克次体在 Ｖｅｒｏ － Ｅ６ 细胞中得到大量增殖。结论 改进后的 Ｖｅｒｏ － Ｅ６ 细胞培养法可以获得大量的恙虫病立克次体， 该方法既经济又适用。

新型冠状病毒在Vero-E6细胞中的增殖特征分析

目的了解新型冠状病毒(2019-nCoV)在Vero-E6细胞中的增殖特征,为病毒的分离培养、抗病毒药物研究以及疫苗研制等工作提供基础。方法将2019-nCoV做半对数系列稀释,测定病毒的半数组织培养感染剂量(TCID 50);以1.74×10^-4 TCID 50/cell的病毒量感染Vero-E6细胞,在病毒吸附后第0~6 d分别收集病毒培养上清,测定上清中病毒感染滴度和病毒核酸拷贝数;测定病毒储存液冻融/非冻融、不同细胞悬液浓度、病毒吸附后洗涤/不洗涤等不同实验条件下的TCID 50。结果2019-nCoV感染Vero-E6细胞后,48 h内培养上清中的病毒TCID 50和病毒核酸拷贝数到达或接近峰值,平均复制周期约为3.29 h;48 h后上清中病毒核酸拷贝数维持在较高水平但病毒感染滴度逐渐下降。病毒储存液的冻融、细胞浓度以及病毒吸附后洗涤等培养条件可轻微影响病毒TCID 50。结论2019-nCoV感染Vero-E6细胞在早期增殖迅速,感染后期病毒感染滴度逐渐下降,但病毒核酸拷贝数在上清中维持在较高水平。

用原子力显微镜观察汉坦病毒感染前后Vero-E6细胞的形貌变化

目的用原子力显微镜(atom force microscope,AFM)观察汉坦病毒感染前后Vero-E6细胞的形貌变化。方法①用不同浓度的戊二醛固定细胞;②用不同稀释度的病毒感染细胞;③用同一稀释度的病毒分别感染细胞15、30、45、60、75、90分钟。结果①用0.5%和1.0%的戊二醛处理的细胞形态正常;用1.5%和2.0%的戊二醛固定的细胞表面凸凹不平孔洞较多,大部分细胞皱缩。②用不同稀释度的病毒感染过的Vero-E6细胞,与正常细胞相比,细胞表面粗糙,在细胞核周围有孔洞出现,但稀释度不同出现孔洞的数量也有差别,细胞表面光滑程度也有不同。③用同一稀释度的病毒感染细胞不同时间,发现细胞的形貌、表面粗糙度及细胞表面的孔洞数量都有了变化。结论用AFM技术可以观察到病毒感染前后细胞的超微结构,近似的反映出病毒感染细胞的动态过程。

汉滩病毒S基因在Vero-E6细胞中的分段表达

目的 体外研究汉滩病毒 (HTNV)S基因及其 5’端、3’端表达的意义 ,为核蛋白T细胞表位的研究奠定基础。方法 设计 2套引物 ,用PCR方法从PBV2 2 0 -S2 2原核质粒中扩增出S基因全读码框 (37- 132 6bp)及S基因 5’端 (37-5 0 1bp) ,S基因 3’端 (5 0 2 - 132 6bp)用TA克隆将其克隆入 pcDNA3 1/V5 -His -TOPO载体中 ,成功构建 pcDNA3 1-S及pcDNA3 1-S -N、pcDNA3 1-S -C真核表达载体 ,并通过脂质体转染至Vero -E6细胞中 ,进行了瞬时表达。 结果 间接免疫荧光成功检测到 pcDNA3 1-S及pcDNA3 1-S -N、pcDNA3 1-S -C在Vero -E6细胞中的表达。 结论 pcDNA3 1-S及 pcDNA3 1-S -N、pcDNA3 1-S -C真核表达载体有较高的转染效率 ,目的基因能在宿主细胞中表达 ,有利于研究HTNV -S基因在T细胞表位研究中的意义。

Vero-E6、MDCK、293细胞对SARS冠状病毒敏感性的研究

目的 研究Vero E6、MDCK、2 93细胞对SARS冠状病毒的敏感性 ,为该病的病原学研究、诊断和疫苗制备奠定基础。方法 用Vero E6、MDCK及 2 93细胞对广东省部分SARS病人的咽拭子标本进行分离培养 ,并对分离物使用电镜、间接免疫荧光 (IFA)及荧光定量聚合酶链反应 (FQ PCR)的方法分别检测细胞和 (或 )培养上清液中的病毒含量。结果 感染SARS病人的咽拭子标本后 ,Vero E6细胞出现病变 (CPE)最早 ,电镜中可观察到Vero E6细胞中大量的病毒颗粒 ,IFA试验感染病毒的Vero E6细胞与SARS病人的恢复期血清呈强阳性反应 ,FQ PCR结果显示Vero E6感染细胞内的病毒含量 1 0 8拷贝 /ml,高于 2 93细胞 (1 0 6拷贝 /ml)及MDCK(1 0 4拷贝 /ml)。结论 三种细胞对SARS相关病毒的敏感性不同 ,Vero

用Vero-E6细胞从疫区褐家鼠分离流行性出血热病毒的研究

1981年以来,山西部分农村及城市相继出现流行性出血热(EHF)的流行,褐家鼠是主要传染源。我们用 Vero—E6(简称 E6)细胞直接从疫区褐家鼠肺组织中分离出可传代的 EHF 病毒。现将初步鉴定结果报告如下。

流行性出血热病毒在MA-104和Vero-E6传代细胞上繁殖动态的比较

用流行性出血热病毒(陈株)分別感染MA-104和Vero-E6传代细胞,结果受病毒感染的MA-104细胞荧光阴性细胞出现早,感染滴度高,胞浆内颗粒大,提示MA-104细胞用于该病毒的分离传代及抗原片的制作等方面优于Vero-E6细胞。流行性出血热病毒(EHFV)在某些原代及传代细胞上能适应增殖,国内外已有过报导。但用对轮状病毒十分敏感的恒河猴胚肾MA-104细胞培养和增殖EHFV并与通常使用分离该病毒的VeroE6细胞进行繁殖动态观察,尚未有过报导。本文用间接免疫荧光法(IFA)比较观察EHFV在两种细胞上的增殖动态,为MA-104细胞代替常规Vero-E6细胞用于该病毒的分离、传代等研究以及抗原片的制备提供依据。

Variability of the Pacific subtropical cells under global warming in CMIP6 models

The Pacific subtropical cells(STCs)are shallow meridional overturning circulations connecting the tropics and subtropics,and are assumed to be an important driver of the tropical Pacific decadal variability.The variability of STCs under global warming is investigated using multimodal outputs from the latest phase of the Coupled Model Inter-comparison Project(CMIP6)and ocean reanalysis products.Firstly,the volume transport diagnostic analysis is employed to evaluate how coupled models and ocean reanalysis products reproduce interior STC transport.The variation of heat transport by the interior STC under the high-emissions warming scenarios is also analyzed.The results show that the multimodal-mean linear trends of the interior STC transport along 9°S and 9°N are-0.02 Sv/a and 0.04 Sv/a under global warming,respectively,which is mainly due to the combined effect of the strengthened upper oceanic stratification and the weakening of wind field.There is a compensation relationship between the interior STC and the western boundary transport in the future climate,and the compensation relationship of 9°S is more significant than that of 9°N.In addition,compared with ocean reanalysis products,the coupled models tend to underestimate the variability of the interior STC transport convergence,and thus may lose some sea surface temperature(SST)driving force,which may be the reason for the low STC-SST correlation simulated by the model.The future scenario simulation shows that the heat transport of interior STC is weakened under global warming,with a general agreement across models.

Intermittent fasting boosts antitumor immunity by restricting CD11b^(+)Ly6C^(low)Ly6G^(low) cell viability through glucose metabolism in murine breast tumor model

Intermittent fasting can benefit breast cancer patients undergoing chemotherapy or immunotherapy.However,it is still uncertain how to select immunotherapy drugs to combine with intermittent fasting.Herein we observed that two cycles of fasting treatment significantly inhibited breast tumor growth and lung tissue metastasis,as well as prolonged overall survival in mice bearing 4T1 and 4T07 breast cancer.During this process,both the immunosuppressive monocytic-(M-)and granulocytic-(G-)myeloid-derived suppressor cell(MDSC)decreased,accompanied by an increase in interleukin(IL)7R^(+)and granzyme B^(+)T cells in the tumor microenvironment.Interestingly,we observed that Ly6G^(low)G-MDSC sharply decreased after fasting treatment,and the cell surface markers and protein mass spectrometry data showed potential therapeutic targets.Mechanistic investigation revealed that glucose metabolism restriction suppressed the splenic granulocytemonocyte progenitor and the generation of colony-stimulating factors and IL-6,which both contributed to the accumulation of G-MDSC.On the other hand,glucose metabolism restriction can directly induce the apoptosis of Ly6G^(low)G-MDSC,but not Ly6G^(high)subsets.In summary,these results suggest that glucose metabolism restriction induced by fasting treatment attenuates the immune-suppressive milieu and enhances the activation of CD3^(+)T cells,providing potential solutions for enhancing immune-based cancer interventions.

Gossypol acetic acid regulates leukemia stem cells by degrading LRPPRC via inhibiting IL-6/JAK1/STAT3 signaling or resulting mitochondrial dysfunction

BACKGROUND Leukemia stem cells(LSCs)are found to be one of the main factors contributing to poor therapeutic effects in acute myeloid leukemia(AML),as they are protected by the bone marrow microenvironment(BMM)against conventional therapies.Gossypol acetic acid(GAA),which is extracted from the seeds of cotton plants,exerts anti-tumor roles in several types of cancer and has been reported to induce apoptosis of LSCs by inhibiting Bcl2.AIM To investigate the exact roles of GAA in regulating LSCs under different microenvironments and the exact mechanism.METHODS In this study,LSCs were magnetically sorted from AML cell lines and the CD34+CD38-population was obtained.The expression of leucine-rich pentatricopeptide repeat-containing protein(LRPPRC)and forkhead box M1(FOXM1)was evaluated in LSCs,and the effects of GAA on malignancies and mitochondrial RESULTS LRPPRC was found to be upregulated,and GAA inhibited cell proliferation by degrading LRPPRC.GAA induced LRPPRC degradation and inhibited the activation of interleukin 6(IL-6)/janus kinase(JAK)1/signal transducer and activator of transcription(STAT)3 signaling,enhancing chemosensitivity in LSCs against conventional chemotherapies,including L-Asparaginase,Dexamethasone,and cytarabine.GAA was also found to downregulate FOXM1 indirectly by regulating LRPPRC.Furthermore,GAA induced reactive oxygen species accumulation,disturbed mitochondrial homeostasis,and caused mitochondrial dysfunction.By inhibiting IL-6/JAK1/STAT3 signaling via degrading LRPPRC,GAA resulted in the elimination of LSCs.Meanwhile,GAA induced oxidative stress and subsequent cell damage by causing mitochondrial damage.CONCLUSION Taken together,the results indicate that GAA might overcome the BMM protective effect and be considered as a novel and effective combination therapy for AML.

一氧化氮对HSV-1在HeLa细胞和Vero-E6细胞中增殖的影响

以硝普钠作一氧化氮供体，观察不同剂量一氧化氮存在条件下ＨＳＶ１在ＨｅＬａ细胞和ＶｅｒｏＥ６细胞中增殖情况。结果表明：一氧化氮对ＨＳＶ１在ＶｅｒｏＥ６细胞中增殖有明显抑制作用，而对ＨＳＶ１在ＨｅＬａ细胞中增殖无明显影响。提示一氧化氮的抗病毒作用存在着细胞敏感性差异。

Small extracellular vesicles derived from cerebral endothelial cells with elevated microRNA 27a promote ischemic stroke recovery

Axonal remodeling is a critical aspect of ischemic brain repair processes and contributes to spontaneous functional recovery.Our previous in vitro study demonstrated that exosomes/small extracellular vesicles(sEVs)isolated from cerebral endothelial cells(CEC-sEVs)of ischemic brain promote axonal growth of embryonic cortical neurons and that microRNA 27a(miR-27a)is an elevated miRNA in ischemic CEC-sEVs.In the present study,we investigated whether normal CEC-sEVs engineered to enrich their levels of miR-27a(27a-sEVs)further enhance axonal growth and improve neurological outcomes after ischemic stroke when compared with treatment with non-engineered CEC-sEVs.27a-sEVs were isolated from the conditioned medium of healthy mouse CECs transfected with a lentiviral miR-27a expression vector.Small EVs isolated from CECs transfected with a scramble vector(Scra-sEVs)were used as a control.Adult male mice were subjected to permanent middle cerebral artery occlusion and then were randomly treated with 27a-sEVs or Scra-sEVs.An array of behavior assays was used to measure neurological function.Compared with treatment of ischemic stroke with Scra-sEVs,treatment with 27a-sEVs significantly augmented axons and spines in the peri-infarct zone and in the corticospinal tract of the spinal grey matter of the denervated side,and significantly improved neurological outcomes.In vitro studies demonstrated that CEC-sEVs carrying reduced miR-27a abolished 27a-sEV-augmented axonal growth.Ultrastructural analysis revealed that 27a-sEVs systemically administered preferentially localized to the pre-synaptic active zone,while quantitative reverse transcription-polymerase chain reaction and Western Blot analysis showed elevated miR-27a,and reduced axonal inhibitory proteins Semaphorin 6A and Ras Homolog Family Member A in the peri-infarct zone.Blockage of the Clathrin-dependent endocytosis pathway substantially reduced neuronal internalization of 27a-sEVs.Our data provide evidence that 27a-sEVs have a therapeutic effect on stroke recovery by promoting axonal remodeling and improving neurological outcomes.Our findings also suggest that suppression of axonal inhibitory proteins such as Semaphorin 6A may contribute to the beneficial effect of 27a-sEVs on axonal remodeling.

Regulator of G protein signaling 6 mediates exercise-induced recovery of hippocampal neurogenesis,learning,and memory in a mouse model of Alzheimer’s disease

Hippocampal neuronal loss causes cognitive dysfunction in Alzheimer’s disease.Adult hippocampal neurogenesis is reduced in patients with Alzheimer’s disease.Exercise stimulates adult hippocampal neurogenesis in rodents and improves memory and slows cognitive decline in patients with Alzheimer’s disease.However,the molecular pathways for exercise-induced adult hippocampal neurogenesis and improved cognition in Alzheimer’s disease are poorly understood.Recently,regulator of G protein signaling 6(RGS6)was identified as the mediator of voluntary running-induced adult hippocampal neurogenesis in mice.Here,we generated novel RGS6fl/fl;APP_(SWE) mice and used retroviral approaches to examine the impact of RGS6 deletion from dentate gyrus neuronal progenitor cells on voluntary running-induced adult hippocampal neurogenesis and cognition in an amyloid-based Alzheimer’s disease mouse model.We found that voluntary running in APP_(SWE) mice restored their hippocampal cognitive impairments to that of control mice.This cognitive rescue was abolished by RGS6 deletion in dentate gyrus neuronal progenitor cells,which also abolished running-mediated increases in adult hippocampal neurogenesis.Adult hippocampal neurogenesis was reduced in sedentary APP_(SWE) mice versus control mice,with basal adult hippocampal neurogenesis reduced by RGS6 deletion in dentate gyrus neural precursor cells.RGS6 was expressed in neurons within the dentate gyrus of patients with Alzheimer’s disease with significant loss of these RGS6-expressing neurons.Thus,RGS6 mediated voluntary running-induced rescue of impaired cognition and adult hippocampal neurogenesis in APP_(SWE) mice,identifying RGS6 in dentate gyrus neural precursor cells as a possible therapeutic target in Alzheimer’s disease.

Mutual regulation of microglia and astrocytes after Gas6 inhibits spinal cord injury

Invasive inflammation and excessive scar formation are the main reasons for the difficulty in repairing nervous tissue after spinal cord injury.Microglia and astrocytes play key roles in the spinal cord injury micro-environment and share a close interaction.However,the mechanisms involved remain unclear.In this study,we found that after spinal cord injury,resting microglia(M0)were polarized into pro-inflammatory phenotypes(MG1 and MG3),while resting astrocytes were polarized into reactive and scar-forming phenotypes.The expression of growth arrest-specific 6(Gas6)and its receptor Axl were significantly down-regulated in microglia and astrocytes after spinal cord injury.In vitro experiments showed that Gas6 had negative effects on the polarization of reactive astrocytes and pro-inflammatory microglia,and even inhibited the cross-regulation between them.We further demonstrated that Gas6 can inhibit the polarization of reactive astrocytes by suppressing the activation of the Yes-associated protein signaling pathway.This,in turn,inhibited the polarization of pro-inflammatory microglia by suppressing the activation of the nuclear factor-κB/p65 and Janus kinase/signal transducer and activator of transcription signaling pathways.In vivo experiments showed that Gas6 inhibited the polarization of pro-inflammatory microglia and reactive astrocytes in the injured spinal cord,thereby promoting tissue repair and motor function recovery.Overall,Gas6 may play a role in the treatment of spinal cord injury.It can inhibit the inflammatory pathway of microglia and polarization of astrocytes,attenuate the interaction between microglia and astrocytes in the inflammatory microenvironment,and thereby alleviate local inflammation and reduce scar formation in the spinal cord.

In vitro and in vivo evaluation of effects of Mg-6Zn alloy on tight junction of intestinal epithelial cell

The effects of biodegradable Mg?6Zn alloy on tight junction of intestinal epithelial cells (IEC-6) were investigated. In the in vitro experiments, the cells were exposed to Mg?6Zn alloy extracts with different concentrations (0, 20% and 40%) for 1, 3 and 5 d. The real-time polymerase chain reaction (PCR) results show that when the cells are treated with 40% and 20% extracts, the expression of Zona Occludens 1 (ZO-1) and Occludin increase as compared with those in the control group. In the in vivo experiments, Mg?6Zn alloy and titanium staples were implanted into rabbits’ intestinal tract for 1, 2 and 3 weeks. By immunohistochemical staining of peri-implant intestinal tissue, increased expression of Occludin and ZO-1 are observed in the Mg?6Zn alloy groups as compared with those in the titanium and control groups. The results show that Mg?6Zn alloy in intestine may promote the regeneration of tight junction, and the extract with a certain concentration can induce the expression of tight junction related genes in IEC-6 cells.

miR-216a和CAPN6基因过表达人宫颈癌细胞系HeLa增殖迁移侵袭变化及靶向关系

目的观察微小RNA-216a(miR-216a)和钙蛋白酶6(CAPN6)基因过表达的人宫颈癌细胞系HeLa增殖、迁移、侵袭变化及靶向关系,探讨miR-216a对HeLa细胞增殖迁移侵袭影响的作用机制。方法取对数生长期HeLa细胞,分为一、二、三、四、五组,一组转染miR-216a mimic,二组转染pcDNA3.1-CAPN6质粒,三组顺序转染miR-216a mimic、pcDNA3.1-CAPN6,四组转染pcDNA3.1,五组转染miR-216a mimic NC,培养48 h时分别采用CCK-8法、划痕愈合实验、Transwell试验观察各组细胞的增殖迁移侵袭情况,培养24 h时采用qRT-PCR法检测各组细胞miR-216a、采用WesternBlotting法检测各组细胞CAPN6及信号转导子与激活子3(STAT3)蛋白。取对数生长期HeLa细胞分为四组:A组细胞顺序转染miR-216a mimic、pGL3-CAPN6-WT质粒,B组细胞顺序转染miR-216a mimic、pGL3-CAPN6-MUT质粒,C组细胞顺序转染miR-216amimicNC、pGL3-CAPN6-WT,D组细胞顺序转染miR-216amimicNC、pGL3-CAPN6-MUT,培养36 h时收集各组细胞,采用双荧光素酶报告基因检测试剂盒测算各组细胞相对荧光素酶活性。结果与五组相比,培养48 h时一组细胞增殖活性及划痕前缘迁移距离百分比低、侵袭细胞数少(P均<0.01);与四组相比,二组细胞增殖活性及划痕前缘迁移距离百分比高、侵袭细胞数多(P均<0.01);与一组相比,三组细胞增殖活性及划痕前缘迁移距离百分比高、侵袭细胞数多(P均<0.01);与二组相比,三组细胞增殖活性及划痕前缘迁移距离百分比低、侵袭细胞数少(P均<0.01)。与五组相比,一组细胞miR-216a相对表达量高(P<0.01)。与四组相比,培养24 h时二组细胞CAPN6蛋白、p-STAT3/STAT3相对表达量高,三组细胞表达CAPN6蛋白、p-STAT3/STAT3相对表达量低;与五组相比,一组细胞CAPN6蛋白、p-STAT3/STAT3相对表达量低;与一组相比,三组细胞CAPN6蛋白、p-STAT3/STAT3相对表达量高。与B组相比,A组细胞荧光素酶活性低(P<0.05)。结论miR-216a过表达可抑制HeLa细胞的增殖侵袭和迁移。HeLa细胞中miR-216a与CAPN6基因存在靶向关系。miR-216a可能通过调控CAPN6基因表达,抑制HeLa的增殖、迁移及侵袭。

基于METTL3介导的miR-29a-3p的m^(6)A修饰探讨平喘颗粒抑制气道上皮细胞泛凋亡治疗哮喘的机制研究

目的:观察平喘颗粒对METTL3介导的气道上皮细胞中miR-29a-3p的m^(6)A修饰的影响,明确其抑制哮喘气道炎症的分子机制。方法:16HBE采用LPS诱导(50 mg/L)构建细胞模型,并给予平喘颗粒含药血清和地塞米松进行干预。分别采用CCK8法检测细胞活性、ELISA法检测炎症因子(TNF-α、IL-6和IL-8)的含量和miR-29a-3p的m^(6)A修饰水平、Western blot检测METTL3与泛凋亡蛋白的表达和qRT-PCR检测METTL3与miR-29a-3p的表达。结果:与模型组相比,平喘颗粒能够显著增加16HBE的活力,抑制炎症因子TNF-α、IL-6和IL-8的含量,下调泛凋亡相关蛋白p-RIPK3、p-MLKL、cleaved Caspase-1、cleaved Caspase-3的表达和GSDMD-NT/FL-GSDMD与GSDME-NT/FL-GSDME的比值,差异均具有统计学意义(P<0.01)。此外,平喘颗粒能够显著上调细胞中miR-29a-3p和METTL3的表达水平,促进miR-29a-3p的m^(6)A修饰水平,与模型组相比差异均具有统计学意义(P<0.01)。结论:平喘颗粒主要通过METTL3增强miR-29a-3p的m^(6)A修饰水平,抑制气道上皮细胞泛凋亡,改善气道炎症。

非小细胞肺癌组织中circBIRC6、APPBP2表达及临床预后意义

目的 探讨非小细胞肺癌(NSCLC)组织中环状核糖核酸杆状病毒IAP重复序列6(circBIRC6)、β淀粉样蛋白前体蛋白结合蛋白2(APPBP2)表达及临床预后意义。方法 收集2018年6月~2020年1月90例在河北北方学院附属第一医院行手术切除的NSCLC组织及癌旁组织,采用实时荧光定量聚合酶链式反应检测circBIRC6、APPBP2表达,并分析二者与NSCLC患者临床病理特征的关系。通过Pearson相关性分析NSCLC组织中circBIRC6与APPBP2 mRNA表达的相关性,Kaplan-Meier法绘制不同表皮生长因子受体(EGFR)基因突变、TNM分期和circBIRC6、APPBP2 mRNA表达的NSCLC患者生存曲线,多因素Cox回归分析NSCLC患者预后的影响因素。结果 与癌旁组织比较,NSCLC组织中circBIRC6、APPBP2 mRNA表达升高(P<0.05)。NSCLC组织中circBIRC6与APPBP2 mRNA表达呈正相关(r=0.817,P<0.001)。NSCLC患者不同分化程度、TNM分期、淋巴结转移组织中circBIRC6、APPBP2 mRNA表达比较有差异(P<0.05)。随访3年,90例NSCLC患者总生存率为55.56%(50/90)。EGFR基因突变阳性/阴性NSCLC患者总生存率比较无差异(P>0.05);TNM分期Ⅰ~Ⅱ期NSCLC患者总生存率高于Ⅲ期NSCLC患者(P<0.05);circBIRC6、APPBP2 mRNA高表达组生存率低于circBIRC6、APPBP2 mRNA低表达组(P<0.05)。低分化、TNM分期Ⅲ期、淋巴结转移和circBIRC6≥10.97、APPBP2 mRNA≥2.48为NSCLC患者死亡的独立危险因素[OR(95%CI)=3.586(1.080~11.909)、3.632(1.193~11.057)、3.197(1.060~9.640)、3.223(1.086~9.570)、2.767(1.022~7.492)]。结论 NSCLC组织中circBIRC6、APPBP2 mRNA高表达,与分化程度、TNM分期、淋巴结转移和预后有关。