EVALUATION OF THE PROGNOSTIC VALUE OF nm23 GENE EXPRESSION IN BREAST CANCER

Objective: To investigate the expression of nm23 gene and evaluate its prognostic value in breast cancer. Methods: nm23 expressions were detected in 101 breast cancer patients (group 1) by immunohistochemistry. RT-PCR and immunohistochemistry were used to measure expressions of nm23 gene in another 68 patients with breast cancer (group 2). Results: nm23 gene expression in group 1 was inversely associated with distant metastasis and lymph node metastasis (P<0.05). In 44 patients with negative lymph node, 9 cases progressed to distant metastasis, 7 of them (77.8%) showed low expression of nm23 gene (P<0.05). In 57 patients with positive lymph node, 24 our of 29 patients who had no distant metastasis (82.8%) expressed nm23 gene at high level (P<0.05). Meanwhile, there were 6 patients with distant metastasis in the group 2, all of thenm expressed nm23 gene mRNA at low level. Conclusion: The results showed that nm23 gene might play an independent role in predicting prognosis of breast cancer.

NORTHERN BLOT ANALYSIS OF nm23 GENE EXPRESSION IN HUMAN LUNG CANCER

Objective: To investigate the role of nm23 gene expression in human lung cancer. Methods: Forty human lung cancer tissues and 19 non-cancer pulmonary tissues were studied for their nm23-H1 and nm23-H2 mRNA expression with non-radioactive Northern blot hybridization. The correlation of nm23 mRNA expression with clinical features of lung cancer was analyzed. Results: The mRNA expression of nm23-H2 gene in poorly differentiated squamous cell carcinoma was significantly decreased compared to that in moderate-high differentiated squamousd cell carcinoma. The mRNA expression of nm23-H1 and nm23-H2 gene in small cell lung cancer was significantly decreased compared to that in squamous cell carcinoma. No significant difference in nm23 mRNA expression was observed between lung cancer with and without lymph node metastasis, nor was there significant difference between tumor stage. Conclusion: The mRNA expression of nm23 gene is correlated with the degree of differentiation of lung cancer, but there is no evidence of metastasis suppression effect by nm23 gene.

IDENTIFICATION OF A NEW HUMAN nm23 GENE,nm23-H3b

Nm23 is a kind of effective tumor metastasis suppressor genes which included two types in human:nm23-H1 and nm23-H2. Amino acid identity between nm23-H1 and nm23-H2 was 88%.In this study,using a pair of primers to flank the part of coding sequence of nm 23,the 5'-translated sequence was amplified by polymerase chain reaction (PCR) from human normal liver genomic DNA.A 375-base pairs clone was charactertzed,which designated pnm23-H3b.The nm23-H3b nucleotide sequence between 40 bp and 70 bp is different from nm23-H1 and nm23-H2,and other sequences have 86%and 90%identical to nm23-H1 and nm23-H2,respectively.Southern blot containing BglⅡ-digested human liver genomic DNA hybridized to the entire nm23-H3b DNA and showed three bands at 10.5,7.9 and 4.0 Kb.These data demonstrate that the third human nm23 exists possibly.Therefore,nm23 may be considered a family of closely related genes.

NM23基因与非小细胞肺癌临床病理学特征及^(18)F-FDG PET/CT影像特征的相关性

目的 比较非小细胞肺癌中NM23基因表达情况不同在其临床病理学特征、^(18)F-FDG PET/CT影像特征、生存时间的差异。方法 选择2018年1月~2022年12月于新疆医科大学附属医院病理确诊为非小细胞癌的107例患者的术后标本,运用免疫组化方法检测NM23表达情况,分为NM23低表达组(≤++)(n=64)与NM23高表达组(>++)(n=43),比较两组的临床病理学特征、^(18)FFDG FDG PET/CT图像上影像特征、生存期方面的差异。结果 NM23低表达组与高表达组在性别、临床分期、组织类型、分化程度、吸烟、PET/CT图像上生长部位、生存时间的差异无统计学意义(P>0.05),但在原发灶分期、PET/CT图像上淋巴结转移情况的差异有统计学意义(P<0.05)。结论 NM23基因在非小细胞癌患者T分期、淋巴结转移方面支持其为抑癌基因。

Relation of nm23 gene expression to CT sign and prognosis in peripheral nonsmall cell lung cancer

CT observations and the cellular factors of molecular biology each enable one to recognize macro/micro changes in lung cancer. Growing pattern, characteristic shapes, degree of malignancy, relapse and metastasis of lung cancer are mainly determined by their molecular biology. Change of tumour shape, determined by the tumour’s biological behaviour, is the basis of CT observations. That is, the pathological change acts as a bridge which links the CT observation to molecular biology and makes the investigation of internal relationship between CT sign and molecular biology behaviour possible. As a tumour suppressor gene, nm23 gene is located in chromosome 17q21.3, encoding a nucleoside diphosphate kinase.^(1,2) We studied the expression of nm23 in peripheral nonsmall cell lung cancer (NSCLC) using the streptavidin peroxidase (SP) immunohistochemical method and investigated retrospectively the relationship between nm23 gene, CT observation, biological behaviour and prognosis of NSCLC.

THE HIGH-LEVEL EXPRESSION OF nm23(NDP)GENE IN NPC

We have studied the expression of nm23(NDP) in 50 cases nasopharyngeal biopsies with anti-nm23(NDP) antibodies. As a result, the NDP positive rate in nasopharyngeal carcinoma (NPC) (95.54%) markedly increased (P<0.05), as compared with that in the normal nasopharyngeal epithelia (50.00-60.00%) and lymphocytes (52.00%). There were cytopfasmic type, nucleus type and mixed cytoplasmonucleus type according to NDP location in a cell. Their positive rates were 64.44%, 15.56% and 20.00% respectively in nasopharyngeal carcinoma. The expression of NDP had no relation with cervical lymphometastases in NPC, and the NDP positive rates had no significance between bilateral cervical lymphometastases and unilateral (P<0.05). But the NDP expression had most relation with the NPC staging. The expression rate and the intensity in Ⅲ or Ⅳ stage patients were markedly higher than that in II stage. It points out that the high-level expression of NDP had relation with the rapid cellular proliferation in NPC, and it may indicate the bad prognoses.

Expression of nm23 gene in hepatocellular carcinoma tissue and its relation with metastasis

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The Regulating Effect of the nm23-H1 Gene for PKA Signal Pathway of Lung Cancer Cell and Its Molecular Mechanism

Backgroud and Objective Lung cancer has become the most frenquent malignant tumor in the world which its mortality and morbidity is increasing fastest among all the cancers。

Alterations and Its Mechanisms of Wnt Signal Pathway in Human High-matastatatic Large Cell Lung Cancer Cell Line L9981 by Transfecting with Nm23-H1 Gene

Backgroud and Objective Tumor metastasis is not only the malignant marker and characteristics of lung cancer, but also the main cause of failure to cure and lose their life of the

Alterations in the Cytoskeleton and Biological Behavior in Human Lung Cancer Cell Line L9981 by Nm23-H1 gene Transfection

Objective and Methods The key cause of failure to cure and high mortality in lung cancer. At present, it has been known

Alteration in Gene Expression Prof ile and Biological Behavior in Human Lung Cancer Cell Line NL9980 by Nm23-H1 Gene Silencing

Background and Objective Lung cancer is the leading cause of cancer death in both men and women. Tumor metastasis is an essential aspect of lung cancer progression. Nm23-H1 is

The Regulating Mechanism of Nm23-H1 Gene for FAK Signal Pathway in Human Lung Cancer Cell Line L9981

Background and objective Lung Cancer is one of the most malignant cancers threatening people’s health and life and one of the most rapid increasing cancers both in morbidity

Changes of the Proteomic Profiles in Human High-metastatic Large Cell Lung Cancer Cell Line L9981 by Transfecting with nm23-H1 Gene

Background and Objective Cancer metastasis is not only the malignant characteristics of lung cancer, but also the key cause of failure to cure and high mortality. It has been proved

Transfection of Nm23-H1 Gene Inhibited the Metastatic Potential of Human High-metastatic Large Cell Lung Cancer L9981

Background and objective Invasion and metastasis is not only the malignant phenotypes of lung cancer but also the main cause of death. Elucidating the molecular mechanism of

Comparative Proteomics Study on Human High-metastatic Large Cell Lung Cancer Cell Lines Before and After Transfecting with Nm23-H1 Gene

Background and Objective Lung cancer is not only the most dangerous threating tumor to human’s health and life, but also a malignant tumor with poor prognosis. In the past 10 years,

Influence of Nm23-H1 Gene Site Mutagenesis on Invasive And Metastatic Phenotype in Human High-Metastatic Large Cell Lung Cancer Cell Line L9981

Background and Objective Invasion and metastasis is not only the malignant phenotypes of lung cancer but also the main cause of death. To study and elucidate the molecular mechanism

NM23基因与肿瘤相关性的研究进展

NM23基因在1988年被发现具有肿瘤转移抑制功能,该基因对肿瘤的侵袭、增殖及转移有一定的调节作用,抑制多种肿瘤细胞的转移,对肿瘤的发生发展、病理分期及其预后发挥着极其重要的作用。本文检索了国内外最新的NM23基因与肿瘤相关性研究报道,结果显示NM23基因在骨肉瘤、胃癌、膀胱癌等多种恶性肿瘤细胞中表达降低。此研究结果可以进一步了解NM23基因在相关肿瘤的发生、发展中的分子作用机制。

nm23基因在食管癌中表达的免疫组化研究

目的研究ｎｍ２３基因表达与食管癌生物学行为和预后的关系。方法应用免疫组织化学ＳＰ法检测７６例食管鳞状细胞癌手术标本中ｎｍ２３表达。结果食管癌原发灶癌组织中ｎｍ２３表达阳性率８１．６％，癌旁形态学正常食管粘膜ｎｍ２３阳性率３６．８％，差异具有显著性意义（Ｐ＜０．００１）；食管癌ｎｍ２３高表达者的区域淋巴结转移发生率（５８．２％）明显高于低表达者（２２．２％，Ｐ＜０．００５）；ｎｍ２３表达水平与癌组织浸润食管深度及食管癌ＴＮＭ分期呈正相关，统计学均具有显著性意义（分别为Ｐ＜０．０５、Ｐ＜０．０２）；ｎｍ２３低表达的患者术后三年和五年生存率分别为６０．０％和５１．６％，显著高于ｎｍ２３高表达者（３８．７％和２２．６％），Ｐ＜０．０５和Ｐ＜０．０１。结论ｎｍ２３基因过度表达与食管鳞状细胞癌的浸润及淋巴结转移有关。

人肺癌中nm23等位基因缺失的研究

目的 探讨人肺癌中nm2 3等位基因缺失与肺癌转移的关系。方法 应用Southern印迹杂交对 5 2例人肺癌组织中nm2 3 H1 和nm2 3 H2 等位基因缺失进行了研究 ,并以自身远离癌灶的肺组织作对照。结果 5 2例肺癌中 14例存在nm2 3 H1 等位基因的杂合缺失 ( 2 6.92 % )。 47例有nm2 3 H2 杂交信号的肺癌中 ,2例存在nm2 3 H2 等位基因缺失 ( 4 .2 6% )。伴有淋巴结和 /或远处转移的肺癌中 ,nm2 3 H1等位基因缺失率 ( 4 2 .86% )明显高于不伴有转移的肺癌 ( 8.3 3 % ) (P <0 .0 1) ;低分化和未分化癌nm2 3 H1等位基因缺失率 ( 4 5 .45 % )亦明显高于中～高分化癌 ( 13 .3 3 % ) (P <0 .0 5 )。nm2 3 H1 等位基因缺失与肺癌组织学类型、P TNM分期、原发肿瘤大小、部位 ,以及患者年龄等无明显关系 (P >0 .0 5 )。结论 本研究结果表明nm2 3基因可能参与调控肺癌的细胞分化和转移过程 ,且nm2 3 H1 基因在肺癌转移和细胞分化中的调节作用较nm2 3 H2

乳腺癌组织中C-erbB-2、nm23基因的表达及其预后的关系

目的探讨乳腺癌组织中C-erbB-2基因和nm23基因的表达与预后的关系。方法采用免疫组织化学S-P法检测298例乳腺癌C-erbB-2、nm23基因表达情况并与乳腺癌病理类型、发病年龄、临床分期、腋淋巴结转移情况及5a生存率之间的关系进行分析。结果C-erbB-2基因阳性率36.24%(108/298),nm23基因阳性率为58.05%(173/298);C-erbB-2和nm23基因的表达与肿瘤病理类型、发病年龄、临床分期无明显相关性(P>0.05);C-erbB-2基因表达与腋淋巴结转移呈正相关,与5a生存率呈负相关,nm23基因的表达与腋淋巴结转移呈负相关,与5a生存率呈正相关(P<0.05);C-erbB-2基因表达与nm23基因表达两者之间明显负相关(P<0.05)。结论联合检测乳腺癌组织中C-erbB-2和nm23基因表达可能成为预测、评估乳腺癌患者临床预后的标记物。