MiR-25-3p attenuates the proliferation of tongue squamous cell carcinoma cell line Tca8113

Objective:To investigate the effects of miR-25-3p on the occurrence,development and proliferation of tongue squamous cell carcinoma cells.Methods:To establish tongue squamous cell carcinoma cell line Tca8113 that stably and highly express miR-25-3p using recombinant reiroviral vector-mediated gene transfer method.The proliferation of transfected Tca8113 was detected by thiazolyl blue tetrazolium bromide(MTT)and cell colony formation assays.eyclnD1,p21^(cipt)and p27^(kipt)mRNA expressions in the transfected Tca-8113 were detected by quantitative PCR.cyclinD1,p21^(cipt),p27^(kipt),AKT,p-AKT,FOXOt and p-FOX01 expressions in the transfected Tca8113 were detected by western blot analysis.In addition,miR-25-3p expression in the tongue squamous cell carcinoma cell line and tissue specimen was also detected by quantitative PCR.Results:Quantitative PCR showed that mitt-25-3p expression in the tongue squamous cell carcinoma cell lines and tissue specimen was significantly lower than that in the adjacent tissue.MTT and cell colony formation assays showed that after miR-25-3p overexpression,the proliferation of transfected Tca8113 was obviously attenuated.Western blot analysis and quantitative PCR showed that after miR-25-3p overexpression.p21^(cipt)and p27^(kipt)expressions were upregulated,while cyclinD1,AKT,FOXO1 expressions were downregulated,and AKT and FOXO1 phosphorylation was inactivated in the transfected Tca8113 cells.Conclusions:MiR-25-3p inhibited the proliferation of tongue squamous cell carcinoma cells and regulated cell cycle-related protein expression,playing an important role in the occurrence and development of squamous cell carcinoma of the tongue.

Protein Profile of Human Lung Squamous Carcinoma Cell Line NCI-H226

Objective To construct a database of human lung squamous carcinoma cell line NCI-H226 and to facilitate discovery of novel subtypes markers of lung cancer. Method Proteomic technique was used to analyze human lung squamous carcinoma cell line NCI-H226. The proteins of the NCI-H226 cells were separated by two-dimensional gel electrophoresis and identified by mass spectrometry. Results The results showed that a good reproducibility of the 2-D gel pattern was attained. The position deviation of matched spots among three 2-D gels was 1.95±0.53 mm in the isoelectric focusing direction, and 1.73±0.45 mm in the sodium dodecyl sulfate-polyacrylamide gel electrophoresis direction. One hundred and twenty-seven proteins, including enzymes, signal transduction proteins, structure proteins, transport proteins, etc. were characterized, of which, 29 identified proteins in NCI-H226 cells were reported for the first time to be involved in lung cancer carcinogenesis. Conclusion The information obtained from this study could provide some valuable clues for further study on the carcinogenetic mechanism of different types of lung cancer, and may help us to discover some potential subtype-specific biomarkers of lung cancer.

Tinospora crispa extract inhibits MMP-13 and migration of head and neck squamous cell carcinoma cell lines

Objective: To investigate the effect of Tinospora crispa(T. crispa) extract on matrix metalloproteinase 13(MMP-13) expression and cell migration. Methods: The cytotoxicity of T. crispa extract was examined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay on head and neck squamous cell carcinoma(HNSCC) cell lines. The effect on expression of MMP-13 was analysed by RT-PCR and ELISA. The migration was assessed by wound healing assay. Results: MMP-13 m RNA was highly expressed in the metastatic human HNSCC cell lines, HN22 and HSC-3. T. crispa extract at a concentration of 100.0 μg/m L caused about 50% reduction of cell survival. T. crispa extract at a non-toxic concentration of 12.5, 25.0 and 50.0 μg/m L signii cantly suppressed MMP-13 m RNA expression and secreted MMP-13 in both HN22 and HSC-3. The expression of tissue inhibitors of metalloprotease by HSC-3 cells was attenuated by 25.0 and 50.0 μg/m L of T. crispa extract. Addition of the extract to cells in a wound healing assay showed inhibition of cell migration by HN22 cells. Conclusions: These data suggest that T. crispa could be considered as a potential therapeutic drug to prevent metastasis of HNSCC.

ESTABLISHMENT OF A NOVEL CELL LINE (HNE_(1)) DERIVED FROM A NASOPHARYNGEAL CARCINOMA

A novel epithelial cell line, designated HNE1 was established from a biopsy specimen of a naso-pharyngeal carcinoma (NPC). Electron microscopic examination of the HNE1 cells demonstrated bi-directional differentiation, with some cells displaying features of poorly differentiated squamous cell carcinoma, while other cells appeared to have the morphology of poorly differentiated adenocarcinoma. The HNE1 cell line has been passaged more than 100 times over a period of one year. We recently reported that the Epstein-Barr virus (EBV) nuclear antigen (EBNA) was detected in a low pe rcentage of the HNE1 cells examined at subcultures 5-81; the cells were also shown to be EBV DNA positive. Tumorigenicity of the HNE1 cells was demonstrated by xentransplanta tion in athymic nude mice. The developed tumors were characterized as well-differentiated squamous cell carcinomas upon histological examination. Kar yotypic analysis of the HNE1 cells demonstrated an aneuploidy with a modal chromosomal number of 74 at passage 5 and 101 at passage 20; 15 marker chromosomes were identified. The frequency of spontaneous sister chromatid exchange was found ot be very high (87.6±0.4/cell).

CONDITIONED MEDIUM OF HUMAN NASOPHARYNGEAL CARCINOMA EPITHELIOID CELL LINE CNE_(1) CONTAINED THE ACTIVITIES OF TRANSFORMED GROWTH-INHIBITING FACTORS

The hormone defined serum free conditioned medium (SFCM) of human nasopharyngeal carcinoma epithelioid cell line (CNE1) was assayed by both the 3H-thymidine incorporation test and the soft agar test. It was found that the SFCM stimulated the growth of long-term serum-free cultured CNE4 cells in ac-cordence with the fact that the growth rate of long-term serum-free cultured CNE1 cells was directly proportional to the plating density. Alternatively 5% SFCM inhibited the growth of short-term serum-free cultured CNE4 cells by 51% in which the indicator cell remained the responsiveness state of growing in the serum-supplemented medium to the effector of interest. Furthermore, SFCM resulted in the inhibition of anchorage-independent growth of CNE4 cells and A431 cells. Also in soft agar test. SFCM reduced the colony formation of NRK(?),9F cells in the presence of EGF or EGF plus TGF-β. These finding suggested that CNE4 secreted autocrine growth stimulating factor(s) and growth inhibiting factor(s) in the serum-free medium, the latter strongly reverse malignant phenotypes of CNE4 and A431 cells in serum-supplemented surrounding.

Establishment and characterization of a novel nasopharyngeal carcinoma cell line (SUNE2) from a Cantonese patient

The undifferentiated form of nasopharyngeal carcinoma (NPC) is the most common malignant head and neck cancer in South China, especially in Cantonese populations. However, few NPC cell lines have been established from the patients in this region. In this study, we established a new NPC cell line, termed SUNE2, from a Cantonese patient with undifferentiated NPC. This cell line had extremely low concentrations of Epstein-Barr virus (EBV) DNA in long-term culture and expressed low levels of latent membrane protein 1 (LMP1), latent membrane protein 2A (LMP2A), BamH1-A right frame 1 (BARF1), EBV-encoded RNA-1 (EBER1), and EBV-encoded RNA-2 (EBER2) in early passages. SUNE2 cells also showed much stronger transforming ability than 5-8F cells in colony formation assays and anchorage- independent growth assays in soft agar, and they only need 2 weeks to form tumors in nude mice. In summary, the SUNE2 cell line is a new in vitro model that can be used for further research on the mechanisms underlying the occurrence and development of NPC.

Novel esophageal squamous cell carcinoma bone metastatic clone isolated by scintigraphy, X ray and micro PET/CT

AIM: To establish a Chinese esophageal squamous cell carcinoma (ESCC) cell line with high bone metastasis potency using 99mTc-methylene diphosphonate (99mTc-MDP) micro-pinhole scintigraphy, X ray and micro-positron emission tomography/computed tomography (PET/CT) for exploring the mechanism of occurrence and development in esophageal cancer.

Relation between the Expression of K-ras in Hep-2 Cells and Development of Laryngeal Carcinoma~*

Objective： To investigate the expression of K-ras in human laryngeal squamous cell carcinoma cell lines （Hep-2） and its significance for establishing a solid foundation for further study of the relationship between human laryngeal squamous cell carcinoma and K-ras gene point mutations. Methods： The expression of K-ras in human laryngeal squamous cell carcinoma cell lines （Hep-2） and human pancreatic carcinoma cell lines （MIAPaCa-2） was detected by using RT-PCR. Results： The expression of K-ras mRNA in Hep-2 and MIAPaCa-2 was strong and positive. Conclusion： The expression of K-ras mRNA in human laryngeal squamous cell carcinoma cell lines （Hep-2） is positive. Development of laryngeal carcinoma might be related to the activation of K-ras gene point mutation.

Role of JNK signaling pathway in sensitivity to radiotherapy of nasopharyngeal carcinoma

Objective:The aim of the study was to investigate the effect of c-Jun N-terminal protein kinase(JNK) signaling pathway on influencing the sensitivity to radiotherapy of human nasopharyngeal carcinoma CNE cells.Methods:Human nasopharyngeal carcinoma CNE multicellular spheroids(MCS) were constructed with three dimensional cell culture methods.Western blot was employed to analyze the activity of JNK signaling pathway in MCS after X-ray irradiation,and the expression of caspase-3 protein before and after using SP600125(a special inhibitor of JNK).X-ray induced cell apoptosis in MCS before and after treated with SP600125 were detected by TUNEL.Results:The level of JNK phosphorylation in MCS was a dynamic course after radiation,and there was a phosphorylation peaks at 2 h later,the apoptotic rate of MCS(P < 0.05) and the expression of caspase-3 protein(P < 0.05) were significantly increased after treated with SP600125.Conclusion:The transient activation of JNK played a important role in sensitivity to radiotherapy of CNE MCS via mediating survival signals,blocking this pathway accelerate cell apoptosis,which may be related to the increased expression of caspase-3.

Inhibition of metastasis to lung of a human nasopharyngeal carcinoma cell line CNE-2L2 transfected with pRc/CMV-antisense 6A8 cDNA in nude mice

The growth of CNE-2L2 cell, a cloned line of human nasopharyngeal carcinoma with a high potentiality of metastasis to lung was inhibited to a certain extent after transfection with a recombinant antisense expression vector of a cDNA encoding a human a-mannosidase (pRc/CMV-antisense 6A8 cDNA) (the Genbank accession number of 6A8 cDNA is U37248) in comparison with that of the cell transfected with the Mock and of the wild cell. Two months after a subcutaneous inoculation of CNE-2L2 cell into the axilla of nude mice metastatic lesions in the lung were observed in 9/10 mice (90%) with grade III in 8 mice and grade II in one mouse in the wild cell group, in 6/8 mice (75%) with grade III in one mouse, grade II in 2 mice and grade I in 3 mice in the Mock-transfection group, in only 3/10 mice (30%) with all grade I in pRc/CMV-antisense 6A8 cDNA-transfection group.

First molecular cytogenetic characterisation of tracheal squamous cell carcinoma cell line KLN 205

Aim:Murine tumour cell lines have been used in thousands of studies.Strikingly,it is rather the rule than exception for most of them that not much is known about their genetic characteristics.The squamous cell carcinoma(SCC)cell line KLN 205 is such an example.KLN 205 cells have not been studied yet for karyotype or acquired copy number variations(CNVs),but they have been used as models for(metastatic)lung cancer,lung-SCC,non-small cell lung cancer,tongue cancer and subcutaneous SCC.Here,it was characterised cytogenomically for the first time.Methods:The cell line KLN 205 was characterised comprehensively by molecular cytogenetics using multicolour banding as well as molecular karyotyping.Based on these results,a map of the imbalances and breakpoints determined in the murine genome was translated to the human genome.Results:Here,it could be shown that this>40-year-old cell line has a stable,approximately tetraploid karyotype comprising 77-82 chromosomes.However,there are few structural chromosomal aberrations:only six derivatives involving chromosomes 2,3,5,9,10 and/or 19 could be found.According to the literature,SCCs derived from different human tissues,as well as lung SCC and non-small cell lung cancer,display overall similar CNV patterns.Conclusion:Thus,according to the genetic profile found here,KLN 205 can be applied as a general model for human SCC;it is also suited as a model for lung cancer in general.Further molecular genetic characterisation of KLN 205 cell line may find more lung-and/or SCC-specific alterations.

替雷利珠单抗联合化疗一线治疗局部晚期或转移性肺鳞癌的真实世界研究

目的:评估替雷利珠单抗联合化疗一线治疗局部晚期/转移性肺鳞癌的疗效及安全性。方法:收集2021年1月—2023年12月内蒙古医科大学附属医院就诊的肺鳞癌患者109例,其中替雷利珠单抗联合化疗组66例,化疗组43例,比较两组患者的客观缓解率(objective response rate,ORR)、无进展生存期(progression free survival,PFS)、总生存期(overall survival,OS)和治疗相关不良事件(treatment-related adverse event,TRAE)的发生率。结果:中位随访时间20.2个月,替雷利珠单抗联合化疗组的ORR明显高于化疗组(75.8%vs.51.2%)、中位PFS明显延长(17.3个月vs.9.3个月),替雷利珠单抗联合化疗组中位OS未达到,但死亡风险较化疗组(19.3个月)显著降低(HR=0.38,95%CI:0.19~0.68,P=0.002)。两组任意级别和3级及以上TRAE发生率相似,替雷利珠单抗联合化疗组免疫相关不良事件(immune-related adverse events,irAE)发生率为28.8%,其中3级及以上irAE仅1例(1.5%)发生免疫相关性肺炎。结论:一线替雷利珠单抗联合化疗显著提高局部晚期/转移性肺鳞癌的疗效,且总体不良反应程度可控。

益气解毒方通过TGF-β1/SMAD3信号通路抑制鼻咽癌细胞增殖、迁移和侵袭

目的研究益气解毒方对鼻咽癌细胞增殖、迁移和侵袭的影响,并从转化生长因子β1(TGF-β1)/SMAD3信号通路探讨其对增殖、迁移和侵袭的作用机制。方法(1)将鼻咽癌细胞分为4组:溶剂对照组、益气解毒方0.5 mg·mL^(-1)组、益气解毒方1.0 mg·mL^(-1)组、5-氟尿嘧啶(5-Fluorouracil,5-Fu)2μg·mL^(-1)组,采用实时无标记细胞功能分析仪(real time cellular analysis technology,RTCA)监测细胞增殖;创伤愈合实验检测细胞迁移;药物干预24 h后,侵袭小室法检测细胞侵袭;Western Blot法检测细胞β-catenin、E-cadherin、N-cadherin、TGF-β1、SMAD3蛋白的表达水平。(2)将鼻咽癌细胞分为5组:溶剂对照组、TGF-β110 ng·mL^(-1)组、TGF-β110 ng·mL^(-1)+益气解毒方1.0 mg·mL^(-1)组、益气解毒方1.0 mg·mL^(-1)组、LY320088210μmol·L-1组,采用实时无标记细胞功能分析仪监测细胞增殖;创伤愈合实验检测细胞迁移;药物干预24 h后,侵袭小室法检测细胞侵袭;Western Blot法检测细胞β-catenin、E-cadherin、N-cadherin、TGF-β1、SMAD3蛋白的表达水平。(3)随机将裸鼠分为模型组、益气解毒方组和5-Fu组。皮下部位注射细胞悬液制备鼻咽癌裸鼠移植瘤模型,基本成瘤后,5-Fu组每2 d腹腔注射1次,其余组每天灌胃给药1次,连续3周。每隔3 d测量瘤体体积1次;Western Blot法检测各组组织中β-catenin、E-cadherin、N-cadherin蛋白表达水平。结果与溶剂对照组比较,益气解毒方(0.5、1.0 mg·mL^(-1))组的细胞增殖曲线均下降,细胞迁移和侵袭能力均降低(P<0.05,P<0.01),且E-cadherin蛋白表达明显升高(P<0.01),β-catenin、N-cadherin、TGF-β1、SMAD3蛋白表达均明显降低(P<0.05,P<0.01)。与模型组比较,益气解毒方组的鼻咽癌移植瘤体积明显减小(P<0.05),且益气解毒方组移植瘤组织中的β-catenin和N-cadherin蛋白表达明显下调(P<0.05,P<0.01),E-cadherin蛋白表达明显上调(P<0.01)。加入TGF-β1信号通路激活剂和抑制剂后,与益气解毒方1.0 mg·mL^(-1)组比较,TGF-β110 ng·mL^(-1)+益气解毒方1.0 mg·mL^(-1)组的TGF-β1、SMAD3、β-catenin和N-cadherin蛋白表达水平均明显升高(P<0.05,P<0.01),且细胞增殖、迁移和侵袭的能力明显增强(P<0.01)。结论益气解毒方能够通过调控TGF-β1/SMAD3信号通路抑制鼻咽癌细胞的增殖、迁移和侵袭。

白蛋白紫杉醇联合卡铂一线治疗晚期肺鳞癌的疗效分析

目的观察白蛋白紫杉醇和卡铂联用作为一线治疗方案对晚期肺鳞状细胞癌患者的临床效果及不良反应。方法选取2020年12月—2022年12月于枣庄市立医院呼吸与危重症医学科接受治疗的86例晚期肺鳞状细胞癌(ⅢB/Ⅳ期)患者作为研究对象,根据随机数表法分为NC组(给予白蛋白结合型紫杉醇联合卡铂治疗方案,n=40)与GC组(给予吉西他滨联合卡铂的治疗方案,n=46)。比较2组的临床疗效及不良反应。结果2组的客观缓解率和疾病控制率比较,NC组分别为40%(16/40)和72.5%(29/40)。GC组分别为26%(12/46)和65.2%(30/46)。2组近期疗效对比表明NC组较GC组客观缓解率提高14%,但差异无统计学意义(P>0.05)。2组患者无进展生存期分别为5.10个月和4.60个月,差异无统计学意义(P>0.05)。2组均出现骨髓抑制、恶心/呕吐、腹泻、周围神经毒性及肌痛/关节痛等症状,其中血小板减少发生率NC组较GC组低,周围神经毒性发生率NC组较GC组高,差异有统计学意义(P<0.05)。2组其他不良反应发生率比较,差异无统计学意义(P>0.05)。结论将白蛋白紫杉醇与卡铂联合应用作为治疗晚期肺鳞癌患者的首选方案,在安全和疗效上都得到了正面评价,由此带来的不良反应在可控范围之内,有必要扩充样本规模进行更深入的探讨和验证。

基于SEER数据库构建男性鼻咽鳞状细胞癌患者预后模型

目的:建立一个列线图来预测男性鼻咽鳞状细胞癌患者的生存率。方法:从SEER数据库下载和提取2010—2015年男性鼻咽鳞状细胞癌患者的临床资料,随机分为建模组(811例)和验证组(363例),最小绝对值选择与收缩算子(Least absolute shrinkage and selection operator,LASSO)回归对自变量进行筛选,采用Cox竞争风险模型进行多因素分析,构建列线图预测男性鼻咽鳞状细胞癌患者1年、3年、5年的生存率,采用一致性指数(C-index)、校准曲线、受试者工作特征曲线下面积(Area under a receiver operating characteristic curve,AUC)评估模型的区分度及准确度,临床决策曲线评估模型的临床实用价值,根据构建的模型,计算出模型的风险评分,以中位数水平将样本分为高风险组及低风险组,比较高风险组及低风险组生存率。结果:共纳入1 174例患者,建模组(n=811)和验证组(n=363)。经LASSO回归和Cox回归分析表明,T分期、M分期、年龄、脑转移、肝转移、肺转移是男性鼻咽鳞状细胞癌独立危险因素。建模组和验证组的C-index分别为0.676(95%CI:0.642~0.701)和0.668(95%CI:0.619~0.717)。建模组和验证组的AUC结果表明,这个列线图具有很高的准确性。校准曲线显示观察值与预测值高度一致,证明成功构建了预后模型。在建模组和验证组中,高风险组与低风险组的生存率差异均有统计学意义(P<0.000 1)。结论:T分期、M分期、年龄、脑转移、肝转移、肺转移是男性鼻咽鳞状细胞癌患者生存独立的预后因素。该模型有助于指导临床医师做出治疗方案的选择,延长患者生存率。

β-榄香烯通过PI3K/Akt通路对人口腔鳞癌顺铂耐药细胞增殖和凋亡的影响

目的探讨β-榄香烯(β-Ele)通过PI3K/Akt通路对人口腔鳞癌顺铂(DDP)耐药细胞的增殖、凋亡及耐药性的影响及机制。方法构建DDP耐药细胞株CAL-27/DDP,将细胞分为对照组、β-Ele组(40μg/mlβ-Ele)、DDP组(2 mg/L DDP)、β-Ele+DDP组(40μg/mlβ-Ele联合2 mg/L DDP)和β-Ele+DDP+PI3K激活剂740Y-P组(40μg/mlβ-Ele、2 mg/L DDP和50μg/ml 740Y-P)。采用MTT法检测其增殖活力,计算半数抑制浓度(IC_(50))。流式细胞术检测各组细胞的周期变化及凋亡情况。Western blotting检测PI3K/Akt通路相关蛋白的表达。结果CAL-27/DDP细胞对DDP的IC_(50)为5.53 mg/L,显著高于CAL-27细胞对DDP的IC_(50)(1.45 mg/L)。与对照组比较,β-Ele组和DDP组CAL-27/DDP细胞在72 h的增殖活力降低、凋亡率升高,而p-PI3K和p-Akt相对表达水平降低,其中β-Ele组细胞发生S期阻滞,而DDP组细胞发生G_(0)/G_(1)期阻滞(P<0.05)。与DDP组比较,β-Ele+DDP组细胞增殖活力进一步降低,细胞发生G_(0)/G_(1)期阻滞,凋亡率升高,p-PI3K和p-Akt相对表达水平降低(P<0.05)。与β-Ele+DDP组比较,β-Ele+DDP+740Y-P组的p-PI3K和p-Akt蛋白表达水平升高,CAL-27/DDP细胞增殖率升高,细胞凋亡率降低(P<0.05)。结论β-Ele通过抑制PI3K/Akt信号通路的激活,抑制CAL-27/DDP细胞的增殖活力,促进其凋亡,从而降低其对DDP的耐药性。

lncRNA-MEG3在鼻咽鳞癌患者中的表达变化及临床意义研究

目的:探究分析lncRNA-MEG3在鼻咽鳞癌患者中的表达变化情况。方法:选取2022年6月—2023年6月蚌埠医科大学第一附属医院的96例鼻咽鳞癌患者为研究对象,将鼻咽癌组织作为观察组,癌旁组织作为对照组。检测及比较两组的组织lncRNA-MEG3表达情况,并比较观察组中不同年龄、性别、吸烟史及临床病理参数(分化类型、TNM分期和淋巴结转移)患者的组织lncRNA-MEG3表达情况。结果:观察组的组织lncRNA-MEG3相对表达量及高表达率均显著低于对照组,差异均有统计学意义(P<0.05);观察组中不同年龄、性别及吸烟史患者的组织lncRNA-MEG3相对表达量及高表达率比较,差异均无统计学意义(P>0.05);观察组中分化类型低分化、TNM分期Ⅲ+Ⅳ期和有淋巴结转移患者的组织lncRNA-MEG3相对表达量及高表达率均显著低于分化类型高分化、TNM分期Ⅰ+Ⅱ期和无淋巴结转移患者,差异均有统计学意义(P<0.05)。结论:lncRNA-MEG3在鼻咽鳞癌患者中呈现低表达状态,且不同分化类型、TNM分期和淋巴结转移患者的差异显著,因此在鼻咽鳞癌患者中的检测价值较高。

卡瑞利珠单抗联合标准化疗一线治疗不可手术食管鳞癌的临床效果

目的:探讨卡瑞利珠单抗联合标准化疗一线治疗不可手术食管鳞癌的临床效果。方法:选取2022年6月—2023年6月在泰安市立医院接受治疗的100例食管鳞癌患者为研究对象,并按随机数表法分为两组,每组各50例。标准组患者给予顺铂联合紫杉醇治疗,联合组则在标准组的基础上给予卡瑞利珠单抗治疗。比较两组患者的临床疗效、实验室指标[癌胚抗原(CEA)、血管内皮生长因子(VEGF)、鳞状细胞癌相关抗原(SCC-Ag)]、免疫功能相关指标(CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+))及不良反应发生情况。结果:联合组的疾病控制率为75.56%,高于标准组55.56%,差异有统计学意义(P<0.05);治疗后,两组患者的实验室指标均低于本组治疗前,且联合组低于标准组,差异有统计学意义(P<0.05);治疗后,两组患者免疫功能相关指标均高于本组治疗前,且联合组高于标准组,差异有统计学意义(P<0.05);两组患者不良反应比较,差异无统计学意义(P>0.05)。结论:卡瑞利珠单抗联合标准化疗一线治疗不可手术食管鳞癌,可有效降低患者血清CEA、VEGF、SCC-Ag水平,改善患者免疫水平,提高抗肿瘤效果,减少不良反应。

LINE-1甲基化水平与食管鳞状细胞癌免疫状态的关系

目的探讨食管鳞状细胞癌(ESCC)组织中长散布核元件-1(LINE-1)甲基化水平与免疫状态之间的关系。方法收集107例经术后病理证实为ESCC的肿瘤组织样本,采用亚硫酸氢盐焦磷酸测序法检测ESCC组织中LINE-1甲基化水平。根据HE染色法和免疫组织化学染色法检测4种组织学淋巴细胞反应[克罗恩样淋巴样反应、瘤周淋巴细胞反应、间质淋巴细胞反应、肿瘤浸润淋巴细胞(TILs)反应],并进一步分析ESCC组织中LINE-1甲基化水平与组织学淋巴细胞反应及患者临床病理特征的关系。结果ESCC组织中LINE-1平均甲基化率为(64.27±9.72)%,中位值为63.51%(43.81%~85.10%)。ESCC组织中LINE-1甲基化水平与患者年龄、淋巴结转移、TNM分期、瘤周淋巴细胞反应有关(P<0.05)。缺失/低瘤周淋巴细胞反应的肿瘤组织中LINE-1基因甲基化率低于中、高瘤周淋巴细胞反应的肿瘤组织(P<0.05)。经单因素和多因素Logistic回归模型分析,ESCC组织中LINE-1低甲基化水平是缺失/低瘤周淋巴细胞反应的独立危险因素(P trend<0.001)。结论ESCC组织中LINE-1甲基化水平与患者临床病理、分子特征有关,此外LINE-1低甲基化水平是ESCC组织中缺失/低瘤周淋巴细胞反应的独立危险因素。