Evaluation of Rice Germplasm for Resistance to the Small Brown Planthopper (Laodelphax striatellus) and Analysis of Resistance Mechanism

One hundred and thirty-eight rice accessions were screened for resistance to the small brown planthopper （SBPH） （Laodelphax striatellus Fallen） by the modified seedbox screening test. Twenty-five rice accessions with different levels of resistance to SBPH were detected, accounting for 18.1% of the total accessions, which included 2 highly resistant, 9 resistant and 14 moderately resistant varieties. Compared with indica rice, japonica rice was more susceptible to SBPH. Antixenosis test, antibiosis test and correlation analysis were performed to elucidate the resistance mechanism. The resistant check Rathu Heenati （RHT）, highly resistant varieties Mudgo and Kasalath, and resistant variety IR36 expressed strong antixenosis and antibiosis against SBPH, indicating the close relationship between resistance level and these two resistance mechanisms in the four rice varieties. Antibiosis was the dominant resistance pattern in the resistant varieties Daorenqiao and Yangmaogu due to their high antibiosis but low antixenosis. Dular, ASD7 and Milyang 23 had relatively strong antixenosis and antibiosis, indicating the two resistance mechanisms were significant in these three varieties. The resistant DV85 expressed relatively high level of antixenosis but low antibiosis, whereas Zhaiyeqing 8 and Guiyigu conferred only moderate antibiosis and antixenosis to SBPH, suggesting tolerance in these three varieties. Antibiosis and antixenosis governed the resistance to SBPH in the moderately resistant accession 9311. Antixenosis was the main resistance type in V20A. Tolerance was considered to be an important resistance mechanism in Minghui 63 and Yangjing 9538 due to their poor antibiosis and antixenosis resistance. The above accessions with strong antibiosis or antixenosis were the ideal materials for the resistance breeding.

Applicability of small resistance fastener on long-span continuous bridges of high-speed railway

Ballastless tracks have been widely applied in high-speed railway (HSR). The adaptability research between continuous welded rails (CWR) and long-span bridges of HSR is of great practical engineering significance. Based on the HSR long-span continuous bridges, the integrative spatial finite element model of track-bridge-pier-foundation system was established with the nonlinear spring element simulating the longitudinal resistance between track and bridge. Comparative study on the various additional longitudinal forces of CWR using the common fasteners and small resistance fasteners was carried out. Analysis results indicate that the additional expansion forces and additional rail-breaking forces in long-span ballastless continuous girders can be reduced evidently by 40% 50% after adopting small resistance fasteners, but lead to greater rail broken gap. The small resistance fasteners have little influence on the additional force only caused by vertical load, but can reduce the additional force caused by vertical load combined with braking load by over 10%. Besides, transient analysis method is proved to be more accurate and safe in calculating additional longitudinal forces when the train running or braking on the bridge, compared with the traditional static method.

Industrial Preparation and Acid Resistance of Ultra-stable Y Zeolite with Small Cell Size Produced by Gas-phase Method

Small-cell HSY-S zeolite prepared by the gas-phase ultra-stable method had been researched and developed,and industrial preparation tests of HSY-S have been successfully carried out for the first time.The acid resistance of industrially prepared HSY-S was investigated by acid solutions with different pH values.The structures and properties of HSY-S and its acid-treated samples were characterized by XRD,XRF,BET,and IR.Results show that the HSY-S samples have the characteristics of high crystallinity,good stability,large specific surface area,and good acid resistance.

Resistance and Seakeeping Numerical Performance Analyses of a Semi-Small Waterplane Area Twin Hull at Medium to High Speeds

The hydrodynamic analysis of a new semi-small waterplane area twin hull （SWATH） suitable for various applications such as small and medium size passenger ferries is presented. This may be an attractive crossover configuration resulting from the merging of two classical shapes： a conventional SWATH and a fast catamaran. The final hull design exhibits a wedge-like waterline shape with the maximum beam at the stem; the hull ends with a very narrow entrance angle, has a prominent bulbous bow typical of SWATH vessels, and features full stern to arrange waterjet propellers. Our analysis aims to perform a preliminary assessment of the hydrodynamic performance of a hull with such a complex shape both in terms of resistance of the hull in calm water and seakeeping capability in regular head waves and compare the performance with that of a conventional SWATH. The analysis is performed using a boundary element method that was preliminarily validated on a conventional SWATH vessel.

Sedimentation motion of sand particles in moving water(Ⅰ):The resistance on a small sphere moving in non-uniform flow

In hydraulics,when we deal with the problem of sand particles moving relative to the surrounding water,Stokes'formula of resistance has usually been used to render the velocity of sedimentation of the particles.But such an approach has not been proved rigorously,and its accuracy must be carefully considered.In this paper,we discuss the problem of a sphere moving in a non-uniform flow field,on the basis of the fundamental theory of hydrodynamics.We introduce two assumptions:i)the diameter of the sphere is much smaller than the linear dimension of the flow field,and ii)the velocity of the sphere relative to the surrounding water is very small.Using these two assumptions,we solve the linearized Navier-Stokes equations and equations of continuity by the method of Laplace transform,and finally we obtain a formula for the resistance acting on a sphere moving in a non-uniform flow field.

miR-124 Modulates Gefitinib Resistance through SNAI2 and STAT3 in Non-small Cell Lung Cancer

Gefitinib is used as a first-line treatment for advanced non-small cell lung cancer（NSCLC）.Unfortunately,most NSCLC patients inevitably develop gefitinib resistance during treatment.In addition to EGFR mutation status,the mechanisms involved are largely unknown.In this study,we showed that mi R-124,a tumor suppressor,was significantly down-regulated in gefitinib-resistant NSCLC patients and cell lines compared with gefitinib-sensitive patients and cell lines.In addition,the mi R-124 depletion induced gefitinib resistance,and mi R-124 overexpression sensitized gefitinib-resistant cells to gefitinib.Mechanistic analysis revealed that mi R-124 decreased SNAI2 and STAT3 expression by directly targeting their 3＇UTRs and that knocking down SNAI2 or STAT3 partly reversed the gefitinib resistance induced by mi R-124 depletion.Our data demonstrate that the mi R-124 plays a new critical role in acquired resistance to gefitinib and that the manipulation of mi R-124 might provide a therapeutic strategy for reversing acquired gefitinib resistance.

Role of MetallothioneinlH in Cisplatin Resistance of Non-Small Cell Lung Cancer Cells

Objective： Despite platinum-based adjuvant chemotherapy has improved greatly patients＇ outcomes, drug resistance poses a major impediment to the successful use of such an effective agent. Metallothioneins（MTs） are known to play putative roles in cancer cell proliferation, apoptosis, differentiation, drug resistance and prognosis. The present studiy was to investigte the role of metallethioeinlH（MTIH） in cisplatin resistance of human non-small cell lung cancer（NSCLC） cell lines in vitro or its possible molecular mechanisms. Methods： MTIH mRNA expression in A549 and A549/DDP cells was detected by RT-PCR. A recombinant eukaryotic expression plasmid pcDNA3.1（-）-MT1H was constructed and transfected into A549 cells which express no MTIH. MT1H siRNA was transfected into A549/DDP cells which express MTIH highly. MTIH expression was detected by RT-PCR and Immunoblot. The chemosensitivity to cisplatin was assessed by MTT assay. Apoptosis rate was determined by Tunel and FCM. Bcl-2 and Bax were determined by immunohistochemistry. Results： MT1H mRNA was expressed in A549/DDP but not in A549. After transfection of MT1H, MT1H expression was enhanced and the chemosensitivity to cisplatin was decreased in A549 cells. Inversely, after transfection of MT1H siRNA, MT1H expression was decreased and the chemosensitivity to cisplatin was increased in A549/DDP. The apoptosis rate induced by cisplatin was increased and Bcl-2 was down-regulated but Bax showed little change in A549/DDP cells interferred with MT1H siRNA. Conclusion： MT1H overexpression can promote drug resistance in A549 cells . Down-regulation of MTIH interfered with siRNA can effectively reverses the drug resistance in A549/DDP cells by down-regulating the expression of Bcl-2 and increasing cisplatin induced apoptosis. SiRNA targeting MT1H combined with chemotherapy may be a very promising strategy for treatment of lung cancer.

Small bowel ulcer bleeding due to suspected clopidogrel use in a patient with clopidogrel resistance:A case report

BACKGROUND Clopidogrel is a platelet aggregation inhibitor used for the management of cardiovascular disease.While antiplatelet therapy decreases cardiovascular events after successful coronary drug-eluting stenting,it increases the risk of gastrointestinal(GI)bleeding.About 20%of the patients who take clopidogrel exhibit resistance to the drug.CASE SUMMARY We report the first case of a small bowel bleeding ulcer in an 86-year-old man with clopidogrel resistance.He had a history of taking clopidogrel due to unstable angina.There was no evidence of bleeding in the stomach,duodenum,or colon through upper and lower GI endoscopies.The abdominal computed tomography showed the extravasation of radiocontrast media at the ileum.Because of unstable vital signs,emergency surgery was performed.Multiple ulcers with inflammation were found in the ileum.The pathologic findings revealed simple inflammation.The VerifyNow P2Y12 test showed clopidogrel resistance.One year after changing to aspirin,capsule endoscopy was performed and the small bowel ulcers were improved.CONCLUSION Small bowel ulcers and bleeding due to clopidogrel are not very common,but the prevalence is expected to increase in older age patients with risk factors despite clopidogrel resistance.

EXPRESSION OF MULTIDRUG RESISTANCE-ASSOCIATED PROTEIN (MRP) AND ITS RELATIONSHIP WITH CLINICOPATHOLOGICAL FACTORS IN NON-SMALL CELL LUNG CANCER

Objective: To investigate the relationship between the expression of multidrug resistance-associated protein (MRP) and clinicopathological factors and prognosis. Methods: The expression of MRP in 62 cases with non-small cell lung cancer (NSCLC) was detected using immunohistochemistry method. The expression of MRP in 30 cases of NSCLC and corresponding normal lung tissues were detected using immunohistochemistry and Western Blot. Results: this study of tumor tissues confirmed the plasma membrane and/or cytoplasm locations of MRP. There was apparent difference between normal lung tissues and NSCLC in MRP. The survival analysis of 62 NSCLC showed that the mean survival time of the patients with negative MRP expression was 69.8117.41 months and that of patients with positive MRP expression, 25.384.46 months. Log-rank test suggested that the difference between them was significant (P=0.0156). It was also found that in squamous cell lung cancer the statistically significant difference between the mean survival time of patients with positive MRP expression and those with negative MRP expression (P=0.0153). Multivariate Cox model analysis suggested that the survival time was significantly related to expression of MRP (P=0.035) and lymphatic metastasis (P=0.038). Conclusion: MRP expression in NSCLC is significantly higher compared with normal lung tissues. The mean survival time of patients with negative MRP was relative longer and expression of MRP was an independent factor for prognosis.

State Variable Model for Considering the Parasitic Inductor Resistance on the Open Loop Performance of DC to DC Converters

This paper shows DC and small-signal circuit models for the PWM DC to DC buck, boost and back/ boost converters with the equivalent series resistance of the inductor. The DC voltage transfer function and the efficiency of the converter are derived from the DC model. Small-signal open-loop characteristics are derived from the small-signal model based on a state variable model. A design example proves the performance of the circuit and verification of the model.

Cloning and Drought Resistance Analysis of Soybean GmHsps_p23-like Gene

Soybean(Glycine max(L.)Merr.)is an important cultivated crop,which requires much water during its growth,and drought seriously affects soybean yields.Studies have shown that the expression of small heat shock proteins can enhance drought resistance,cold resistance and salt resistance of plants.In this experiment,soybean GmHsps_p23-like gene was successfully cloned by RT-PCR,the protein encoded by the GmHsps_p23-like gene was subjected to bioinformatics analysis,and the pCAMBIA3301-GmHsps_p23-like overexpression vector and pCBSG015-GmHsps_p23-like gene editing vector were constructed.Agrobacterium-mediated method was used to transform soybeans to obtain positive plants.RT-PCR detection,rehydration experiment and drought resistance physiological and biochemical index detection were performed on the T2 generation positive transgenic soybean plants identified by PCR and Southern hybridization.The results showed that the overexpression vector plant GmHsps_p23-like gene expression increased.After rehydration,the transgenic overexpression plants returned to normal growth,and the damage to the plants was low.After drought stress,the SOD and POD activities and the PRO content of the transgenic overexpression plants increased,while the MDA content decreased.The reverse was true for soybean plants with genetically modified editing vectors.The drought resistance of the overexpressed soybeans under drought stress was higher than that of the control group,and had a stronger drought resistance.It showed that the expression of soybean GmHsps_p23-like gene can improve the drought resistance of soybean.The cloning and functional verification of soybean GmHsps_p23-like gene had not been reported yet.This is the first time that PCR technology has been used to amplify the soybean GmHsps_p23-like gene and construct an expression vector for this gene.This research has laid the foundation for transgenic technology to improve plant drought resistance and cultivate new drought-resistant transgenic soybean varieties.

Acceleration of DNA Replication of Klenow Fragment by Small Resisting Force

DNA polymerases are an essential class of enzymes or molecular motors that catalyze processive DNA syntheses during DNA replications. A critical issue for DNA polymerases is their molecular mechanism of processive DNA replication. We have proposed a model for chemomechanical coupling of DNA polymerases before, based on which the predicted results have been provided about the dependence of DNA replication velocity upon the external force on Klenow fragment of DNA polymerase I. Here, we performed single molecule measurements of the replication velocity of Klenow fragment under the external force by using magnetic tweezers. The single molecule data verified quantitatively the previous theoretical predictions, which is critical to the chemomechanical coupling mechanism of DNA polymerases. A prominent characteristic for the Klenow fragment is that the replication velocity is independent of the assisting force whereas the velocity increases largely with the increase of the resisting force,attains the maximum velocity at about 3.8 pN and then decreases with the further increase of the resisting force.

Application and challenges of RNA interference in reversing multidrug resistance of tumor cells

RNA interference,widely regarded as a key mechanism for cells to regulate gene expression,is a natural gene silencing phenomenon.It can be used as the gene knockdown to reverse the multidrug resistance of tumor cells and has been applied in the field of biomedicine,exhibiting huge potential in drug target identification,optimization of drug targets,multidrug resistance,etc.This paper first introduces the mechanism of RNA interference and the formation mechanism of multidrug resistance of tumor cells,on the basis of which it reviews the application and challenges of RNA interference technology in reversing multidrug resistance.Additionally,the development of the siRNA delivery system is illustrated.

Specific growth inhibition by alteration of metabolic pathway using Chinese herbal medicine in tyrosine kinase inhibitor resistant non-small cell lung cancer

OBJECTIVE Lung cancer is the leading cause of cancer death worldwide.Epidermal growth factor receptor(EGFR)mutation(s)is/are common in non-small cell lung cancer(NSCLC)in Asian population,resulting in lung tumor formation.L858 Rsubstitution mutation on exon 21 and in-flame deletion mutation on exon 19 are the two most common forms of EGFR mutation.Molecular targeted therapy using tyrosine kinase inhibitor(TKI)targeting EGFR shows promising initial response,however drug resistance is common.Therefore,it is needed to identify new inhibitors to tackle TKI-resistance.In this study,we aim to investigate the effect of multiple single purified compounds derived from Chinese herbal medicines(CMHs)on a panel of NSCLC cell lines with different EGFR mutational statuses and TKI sensitivity.We also examine the biological functional effect and drug action mechanism of these cell lines after drug treatment.METHODS We have reviewed the literature and selected ten single purified compounds derived from CMHs which exhibited the highest potential of cancer suppression effect in NSCLC.We have recruited three EGFR-dependent NSCLC cell lines for drug screening using cytotoxicity assay.A549 is used as EGFR wild-type control.Two TKI-resistant NSCLC cell lines were used,H1975 harbors double mutation(EGFRL858R+T790M)and H1650 harbors EGFRexon 19 deletion.H2228is a NSCLC cell line which harbours EML4-ALK fusion gene and was used as EGFR-independent cell line control.MTT assay was used to determine the drug efficacy and IC50 value.Then functional assays including cell cycle arrest analysis and apoptosis assay was used to determine the biological effect after drug treatment.RESULTS MTT assay revealed that six out of ten candidate agents showed significant cancer-inhibiting effects in H1650 and H1975cells.Three compounds exhibited IC50 value at micro-molar levels while another three compounds exhibited IC50 at as low as nano-molar levels.One compound exhibited specificity on EGFR-dependent NSCLC cell lines,which showed 10-fold more selective than the EGFR-independent H2228 cells.Cell cycle analysis and immunoblotting assay showed that one effective compound,designated was MUST-1,altered the metabolic pathway of glucose metabolism and lipid metabolism,and induced cell cycle arrest at G1 phase in NSCLC with EGFR mutation.However,the anti-proliferative effects were distinct in NSCLC cell lines with different EGFR mutation patterns.CONCLUSION MUST-1 significantly induced cell cycle arrest in four NSCLC in EGFR mutant cell lines but the inhibiting effect was not significant in EGFR wildtype cell line.Immunobloting assay revealed that overall intracellular lipid content,glycolytic enzymes PKM2 and cell cycle regulatory gene expression were altered after 72 hcompound treatment in the responsive cells.Further investigation is required to elucidate the underlying reason of drug selectivity and the role of glucose and lipid metabolism in regulating drug sensitivity.

糖酵解在非小细胞肺癌吉非替尼耐药中的作用研究

目的探讨糖酵解在非小细胞肺癌(non-small cell lung cancer,NSCLC)吉非替尼(Gefitinib)耐药中的变化及作用。方法体外培养NSCLC亲本细胞PC-9和A549,并采用浓度递增法构建NSCLC吉非替尼耐药细胞PC-9-GR和A549-GR,通过CCK-8和平板克隆形成实验鉴定细胞耐药性,葡萄糖摄取检测试剂盒和乳酸测试盒分别检测葡萄糖代谢和乳酸产出水平,qRT-PCR和Western blot实验检测细胞糖酵解关键酶的mRNA和蛋白表达水平。采用糖酵解抑制剂2-脱氧-D-葡萄糖(2-deoxy-D-glucose,2-DG)抑制细胞糖酵解后,观察细胞活力及吉非替尼耐药性的变化情况。结果相较于各自亲本细胞,耐药细胞PC-9-GR和A549-GR对吉非替尼抵抗性增强(均P<0.01),葡萄糖代谢速率和乳酸产出水平提高(均P<0.01);糖酵解关键酶HK2、LDHA和PFK的mRNA表达水平升高(均P<0.001),HK2、LDHA、PFKP和PKM2的蛋白表达水平增加(均P<0.001)。2-DG对耐药细胞活力的抑制作用较各自亲本细胞更明显(均P<0.05),且在一定程度上可增强吉非替尼对耐药细胞的杀伤效应。结论NSCLC吉非替尼耐药伴随着糖酵解的激活,该过程可能与糖酵解关键酶表达升高有关,抑制其水平或活性可能是逆转吉非替尼耐药的有效措施。

安罗替尼联合多西他赛用于酪氨酸激酶抑制剂联合含铂类化疗失败非小细胞肺癌患者的疗效

目的探讨安罗替尼联合多西他赛应用于酪氨酸激酶抑制剂联合含铂类化疗失败NSCLC患者的疗效。方法选取2021年6月—2022年5月新乡医学院第一附属医院予以酪氨酸激酶抑制剂联合含铂类化疗失败NSCLC患者83例为此次试验对象,采取随机数字表法将83例患者分为两组,给予对照组(41例)安罗替尼治疗,给予观察组(42例)安罗替尼及多西他赛联合治疗,数据比较:疗效、治疗前后VEGF、MMP9及不良反应。结果较对照组总有效率(68.29%),观察组(88.10%)更高,P<0.05。观察组VEGF、MMP9水平为(82.34±11.45)pg·mL^(-1)、(82.46±7.26)ng·mL^(-1),均优于对照组患者(114.67±11.57)pg·mL^(-1)、(132.18±7.12)ng·mL^(-1),t=12.795、31.493,P<0.05。观察组与对照组不良反应发生率对比(23.81%vs.12.20%)差异无统计学意义(χ^(2)=1.890,P>0.05)。结论安罗替尼联合多西他赛应用于酪氨酸激酶抑制剂联合含铂类化疗失败NSCLC患者能够提高治疗效果,降低血清VEGF、MMP9水平。

脑小血管病与胰岛素抵抗相关性的研究进展

脑小血管病(CSVD)指各种病因影响脑小血管所导致的一系列临床影像病理综合征,具有起病隐匿、发病率高、易复发的特点。胰岛素抵抗(IR)是指机体对胰岛素的敏感性降低。近年来,越来越多的研究证实IR与CSVD的影像学特征的发生发展相关,但机制尚不明确。本文就IR与CSVD的关系的研究及可能机制进行综述,以期为脑小血管病的防治提供参考。

ITGA3对非小细胞肺癌紫杉醇耐药性的影响及机制

目的探讨整合素亚单位α3(ITGA3)对非小细胞肺癌(NSCLC)紫杉醇耐药性的影响及机制。方法选取行紫杉醇联合顺铂化疗的50例NSCLC患者肿瘤组织及A549/Tax(人肺腺癌紫杉醇耐药性)细胞、人A549细胞株及人胚胎肺成纤维细胞(MRC-5),RT-qPCR法检测组织及细胞中ITGA3基因mRNA表达;以A549/Tax细胞为研究对象,分别转染pcDNA3.1-ITGA3质粒(oe-ITGA3)及pcDNA3.1空载体(oe-NC)、沉默ITGA3小RNA(sh-ITGA3)及阴性对照(sh-NC),标记为oe-ITGA3组、oe-NC组、sh-ITGA3组、sh-NC组,同时以未经处理的A549/Tax细胞为对照组;CCK-8法检测24、48 h的OD450值;Western blotting法检测上皮间质转化(EMT)相关蛋白[波形蛋白(Vimentin)、钙黏附蛋白E(E-cadherin)、snail]及转化生长因子β(TGF-β)、免疫逃逸蛋白[程序性死亡分子配体1(PD-L1)]表达;RT-qPCR法检测A549/Tax细胞中ITGA3 mRNA表达;Transwell实验检测A549/Tax细胞迁移、侵袭能力。结果治疗后肿瘤组织中ITGA3 mRNA表达高于治疗前肿瘤组织(P<0.05),A549细胞、A549/Tax细胞中ITGA3 mRNA表达高于MRC-5细胞(P均<0.05)。治疗后,NSCLC患者肿瘤组织中Vimentin、snail、TGF-β、PD-L1较治疗前增加,E-cadherin降低(P均<0.05)。与对照组、oe-NC组相比,oe-ITGA3组24、48 h的OD450值、细胞迁移、侵袭数目、ITGA3 mRNA、Vimentin、snail、TGF-β、PD-L1表达增加,E-cadherin表达降低(P均<0.05);与对照组、sh-NC组相比,sh-ITGA3组24、48 h OD450值、细胞迁移、侵袭数目、ITGA3 mRNA、Vimentin、snail、TGF-β、PD-L1表达降低,E-cadherin表达增加(P均<0.05)。结论下调ITGA3表达可抑制NSCLC细胞对紫杉醇的耐药性,其机制可能与抑制TGF-β表达有关。

基于自适应虚拟电阻的低压微电网有功均分下垂控制策略

由于低压微电网中各分布式电源的线路阻抗不匹配,传统的下垂控制策略难以按照下垂系数合理分配有功功率。为此,提出一种无需通信的自适应虚拟电阻下垂控制方法。通过将微电网中每个分布式发电机(DG)单元输出的有功功率和电压传送给自适应虚拟电阻控制器中,在保证电压和频率稳定控制的前提下实现功率按逆变器容量比例进行精确分配。论文对改进方法的微电网逆变器进行小信号稳定性分析,以优化控制器有关控制参数。仿真和实验结果验证了所提控制方法的有效性。

降低有氧糖酵解增强非小细胞肺癌耐药细胞对顺铂的敏感性

目的:探究顺铂耐药的非小细胞肺癌细胞糖代谢的特点及抑制有氧糖酵解对非小细胞肺癌细胞顺铂耐药细胞的影响及其机制。方法:通过梯度倍增浓度法建立非小细胞肺癌顺铂耐药细胞模型(A549/DDP);酶联免疫吸附试验(enzyme linked immunosorbent assay,Elisa)检测A549/DDP与A549细胞两组葡萄糖消耗量、三磷酸腺苷(adenosine triphosphate,ATP)释放量、乳酸生成及丙酮酸生成量的差异;CCK-8法(cell counting kit-8)检测2-脱氧葡萄糖(2-deoxyglucose,2-DG)及顺铂处理后A549/DDP与A549细胞增殖能力的变化;Elisa检测2-DG处理A549/DDP细胞与A549细胞葡萄糖消耗量、ATP释放量、乳酸生成及丙酮酸生成量的差异;Elisa检测2-DG处理A549/DDP细胞与A549细胞后对非神经元性烯醇化酶(recombinant enolase 1,ENO1)、葡萄糖-6-磷酸脱氢酶(glucose-6-phosphate dehydrogenase,G6PD)、缺氧诱导因子-α(hypoxia inducible factor-α,HIF-α)表达的影响。结果:与A549细胞相比,顺铂耐药细胞株短时间内生长速度无明显差异。A549/DDP细胞消耗葡萄糖量增多、有氧糖酵解产生ATP增多、乳酸生成及丙酮酸释放量也增多,有氧糖酵解能力明显增强,差异具有统计学意义。2-DG处理后能够显著逆转A549/DDP细胞对顺铂的耐药性,增强对顺铂的敏感性,达到抑制A549/DDP细胞增殖的效果,差异具有统计学意义。2-DG能够抑制A549/DDP细胞的葡萄糖摄取,减少ATP的释放,减少乳酸生成及丙酮酸的产生,差异具有统计学意义。与A549细胞相比,A549/DDP细胞ENO1、G6PD、HIF-α表达水平升高,2-DG抑制有氧糖酵解后三者表达水平均降低,差异具有统计学意义。结论:2-DG抑制非小细胞肺癌细胞顺铂耐药有氧糖酵解,可在一定程度上逆转其对顺铂的耐药性。