HSPA5 CD44v6在子宫内膜癌的表达及临床价值

目的探讨热休克蛋白5(HSPA5)和CD44v6在子宫内膜癌中的表达及临床价值。方法选取2018年1月至2020年12月上海市长宁区妇幼保健院手术切除的93例子宫内膜癌标本,用免疫组织化学方法作HSPA5和CD44v6的表达检测,结合其临床病理指标,进行统计学分析。结果在93例子宫内膜癌中,HSPA5、CD44v6表达的阳性率分别为71.0%(66/93)和65.6%(61/93)。HSPA5在子宫内膜癌的不同病理分期、是否绝经及肿瘤浸润子宫壁深度不同(浸润子宫壁深度<1/2组;浸润子宫壁深度≥1/2组)的表达结果差异无统计学意义(均为P>0.05);而HSPA5在子宫内膜癌的不同组织学类型、淋巴结有无转移组的表达结果差异均有统计学意义(P<0.01,P<0.005)。CD44v6在子宫内膜癌的不同临床分期、是否绝经及不同组织学类型的表达结果差异无统计学意义(均为P>0.05);而CD44v6在肿瘤浸润子宫壁不同深度(浸润子宫壁深度<1/2组;浸润子宫壁深度≥1/2组)、淋巴结有无转移组的表达结果差异均有统计学意义(P<0.001,P<0.005)。结论HSPA5、CD44v6在子宫内膜癌中存在高表达,二者与子宫内膜癌的生物学行为有关,在子宫内膜癌的发生、发展中有着重要的调控作用。同步进行HSPA5、CD44v6在子宫内膜癌的表达检测,在判断其预后和指导其临床治疗上有重要价值。

hTERT CD44v6在大肠癌中的表达及意义

目的:探讨hTERT、CD44v6的表达与大肠癌发生、浸润转移及预后的关系。方法:对大肠腺瘤组织及大肠癌组织进行免疫组织化学染色,分析hTERT及CD44v6在大肠癌中表达的相关性。结果:hTERT及CD44v6在大肠癌组织中的阳性表达率分别为70.73%、53.66%,明显高于大肠腺瘤组织中的10.53%、10.53%(P<0.01);hTERT及CD44v6在有淋巴结转移的大肠癌患者的阳性表达率分别为93.33%、86.67%,明显高于无淋巴转移患者的阳性表达率53.85%、38.46%(P<0.01);hTERT及CD44v6在TNMⅢ、Ⅳ期大肠癌患者的阳性表达率分别为94.12%、82.35%,明显高于TNMⅠ、Ⅱ期的54.17%、33_33%(P<0.01);在生存期<5年大肠癌中的阳性表达率分别为90.91%、77.27%,明显高于生存期≥5年的47.37%、26.32%(P<0.01);hTERT和CD44v6在性别、年龄、肿物大小、肿物位置及浸润深度中的阳性表达差异均无统计学意义(P>0.05)。结论:hTERT和CD44v6在大肠癌组织中具有高表达,特别是在有淋巴结转移、TNMⅢ、Ⅳ期和生存期<5年组中有较高表达,说明两者可能在大肠癌的发生、浸润转移过程中起着重要作用,并且与大肠癌患者的预后有关;联合检测hTERT和CD44v6可以作为大肠癌浸润转移的判断和预后评估的参考指标。

p53 CD44V6及nm23/NDPK在非小细胞肺癌中表达的相关性分析

目的:探讨非小细胞肺癌(NSCLC)中p53、CD44V6及nm23/NDPK表达的相关性及预后意义。方法:采用免疫组织化学SP法对69例NSCLC组织中p53、CD44V6及nm23/NDPK进行检测。结果:p53、CD44V6及nm23/NDPK的表达与NSCLC患者的临床分期(P<0.05,P<0.01)、淋巴结转移(P<0.05,P<0.01)及生存率(P<0.05)密切相关。p53、CD44V6表达与nm23/NDPK在NSCLC中的表达呈明显负相关(P<0.01)。结论:联合检测NSCLC中p53、CD44V6及nm23/NDPK的表达对于判断预后和指导治疗可能具有实用价值。

Bcl-2 Survivin CD44v6的表达HPV_(16/18)感染及其与宫颈癌发生的相关性探讨

目的:研究Bcl-2、Survivin、CD44v6在宫颈癌的表达及其与HPV16/18感染的相关性,以探讨宫颈癌的发生机制。方法:采用免疫组化对宫颈癌、上皮内瘤样病变(CIN)和正常宫颈进行Bcl-2、Survivin、CD44v6的检测,同时采用PCR检测HPV16/18感染情况。结果:Bcl-2、Survivin、CD44v6的阳性率在宫颈癌与CIN、正常宫颈间有显著差异,且随着临床分期、病理分级的升高阳性率差异有显著性,其阳性率与淋巴结转移有关。HPV16/18在正常宫颈组织、CIN和宫颈癌中的阳性率逐渐升高,差异有显著性。Bcl-2和Survivin均与HPV16/18感染有相关性。结论:宫颈癌中Bcl-2、Survivin、CD44v6的异常表达和HPV16/18感染有关,与宫颈癌的恶变程度有关,可作为宫颈癌筛查预后判断的有利指标。

VEGF CD44v6 MMP-9在子宫内膜异位症组织中的表达及临床意义

目的探讨血管内皮生长因子(vascular endothelial growth factor,VEGF)、黏附分子CD44v6、基质金属蛋白酶-9(matrix metalloproteinases-9,MMP-9)在子宫内膜异位症发病机制中的作用及临床意义。方法通过免疫组化S-P法分别对60例卵巢异位内膜、52例子宫内膜异位症在位子宫内膜和44例正常子宫内膜组织分别行VEGF、CD44v6和MMP-9的检测,并进行观察和对比。结果 VEGF、CD44v6、MMP-9在卵巢异位内膜中的表达与在位内膜组和正常内膜组比较,有明显增强(P<0.01);在位内膜与正常子宫内膜相比,VEGF在位内膜中的表达高于正常内膜中的表达,有统计学意义(P<0.01),CD44v6及MMP-9在在位内膜中的表达略高于正常内膜中的表达,但无统计学意义(P>0.05)。结论 VEGF、CD44v6、MMP-9在卵巢异位内膜中呈高表达状态,异位内膜组VEGF和CD44v6之间呈正相关(r1=0.462,χ2=42.038,P=0.000);MMP-9与CD44v6之间呈正相关(r2=0.558,χ2=70.534,P=0.000);MMP-9与VEGF呈正相关(r3=0.397,χ2=29.187,P=0.000),表明与异位内膜的高侵袭性和高血管新生能力有关,可能在EMS的发生发展中起重要作用。

Expressions of osteopontin and CD44v6 and their clinical significance in pituitary adenomas

Objective To explore expressions of osteopontin (OPN) and CD44v6 in pituitary adenomas and to evaluate relationship between expressions and invasiveness of tumor. Methods Immunohistochemistry was used to detect expressions of OPN and CD44v6 in 80 pituitary adenomas,and

Expression and significance of CD44s, CD44v6, and nm23 mRNA in human cancer

AIM: To investigate the relationship between the expression levels of nm23 mRNA, CD44s, and CD44v6,and oncogenesis, development and metastasis of human gastric adenocarcinoma, colorectal adenocarcinoma,intraductal carcinoma of breast, and lung cancer.METHODS: Using tissue microarray by immuhistochemical (IHC) staining and in situ hybri-dization (ISH), we examined the expression levels of nm23mRNA, CD44s, and CD44v6 in 62 specimens of human gastric adenocarcinoma and 62 specimens of colorectal adenocarcinoma; the expression of CD44s and CD44v6in 120 specimens of intraductal carcinoma of breast and 20 specimens of normal breast tissue; the expression of nm23 mRNA in 72 specimens of human lung cancer and 23 specimens of normal tissue adjacent to cancer.RESULTS: The expression of nm23 mRNA in the tissues of gastric and colorectal adenocarcinoma was not significantly different from that in the normal tissues adjacent to cancer (P＞0.05), and was not associated with the invasion of tumor and the pathology grade of adenocarcinoma (P＞0.05). However, the expression of nm23 mRNA was correlated negatively to the lymph node metastasis of gastric and colorectal adenocarcinoma (r = -0.49, P＜0.01; r = -4.93, P＜0.01). The expression of CD44s in the tissues of gastric and colorectal adenocarcinoma was significantly different from that in the normal tissues adjacent to cancer (P＜0.05;P＜0.01). CD44v6 was expressed in the tissues of gastric and colorectal adenocarcinoma only, the expression of CD44v6 was significantly associated with the lymph node metastasis, invasion and pathological grade of the tumor (r = 0.47, P＜0.01; r = 5.04, P＜0.01). CD44sand CD44v6 were expressed in intraductal carcinoma of breast, the expression of CD44s and CD44v6 was significantly associated with lymph node metastases and invasion (P＜0.01). However, neither of them was expressed in the normal breast tissue. In addition, the expression of CD44v6 was closely related to the degree of cell differentiation of intraductal carcinoma of breast (x2= 5.68, P＜0.05). The expressional level of nm23mRNA was closely related to the degree of cell differentiation (P＜0.05) and lymph node metastasis (P＜0.01), but the expression of nm23 gene was not related to sex, age, and type of histological classification (P＞0.05).CONCLUSION: Patients with overexpression of CD44s and CD44v6 and low expression of nm23 mRNA have a higher lymph node metastatic rate and invasion. In addition, overexpression of CD44v6 is closely related to the degree of cell differentiation. Detection of the three genes is able to provide a reliable index to evaluate the invasion and metastasis of tumor cells.

Role of VEGF and CD44v6 in differentiating benign from malignant ascites

AIM: To detect the vascular endothelial growth factor (VEGF)and soluble splice variant 6 of CD44 (sCD44v6) levels in ascites and to explore their role in differentiating benign from malignant ascites.METHODS: Cirrhotic ascites (n=36), tuberculosis ascites (n=8) and malignant ascites (n=23) were collected and studied. Concentrations of soluble VEGF and sCD44v6 in various kinds of ascites (n=67) were measured using a sandwich enzyme-linked immunoadsorbent assay.RESULTS: VEGF and sCD44v6 levels in malignant ascites were 640.74±264.81 pg/ml and 89.22±38.20 ng/ml,respectively, both of which were significantly higher than those in cirrhotic ascites and tuberculous ascites (q=18.98,11.89 and q=8.92, 5.09; P<0.01). However, the levels of VEGF and sCD44v6 in cirrhotic and tuberculous ascites had no significant difference (q=0.48, 0.75; P>0.05).Furthermore, VEGF levels in malignant ascites in patients with ovarian cancer were higher than those with gastric and colon cancer (q=5.03, 6.79; P<0.01, respectively). But differences of VEGF levels between gastric and colon cancer were not significant (q=1.90, P>0.05). Whereas, sCD44v6 levels in malignant ascites from patients with ovadan, gastric and colon cancer had no significant difference (q=0.06, 0.91,0.35;P>0.05, respectirely). In comparison with cirrhotic and tuberculous ascites, when the upper limit of its VEGF mean levels 119.44 pg/ml (70.90±48.54) and sCD44v6 mean levels 63.59 ng/ml (44.42±19.17) was taken as the minimum cutoff limit, the sensitivity and specificity of VEGF and sCD44v6 of this assay to the diagnos is of malignant ascites were 91.3 %, 90.9 % and 73.9 %, 88.7 % respectively.CONCLUSION: Elevated levels of VEGF and sCD44v6 may be useful in differential diagnosis of benign and malignant ascites.

Relationship between expression of CD44v6 and nm23-H1 and tumor invasion and metastasis in hepatocellular carcinoma

AIM To detect the expression of CD44v6 mRNA and nm23-H1 mRNA in hepatocellular carcinoma (HCC) by in situ hybridization, and to evaluate the relationship between their expression and also relationship between their expressions and tumor invasion and metastasis.METHODS CD44v6 cDNA probe was synthesized with PCR technique and the nm23-H1 cRNA probe by in vitro transcription. The expression of CD44v6 mRNA and nm23-H1 mRNA was detected by in situ hybridization.RESULTS In group with high invasion and metastasis potential, the positive rates of CD44v6 mRNA and nm23-H1 mRNA were 80% (8/10) and 40% (4/10), in group with poor invasion and metastasis potential, they were 21.7% (5/23) and 91.3% (21/23). There was a positive correlation between the expression of CD44v6 mRNA and tumor invasion and metastasis potential in HCC (P＜0.01), and a reverse correlation between the expression of nm23-H1 mRNA and tumor invasion and metastasis potential (P＜0.01) and a reverse correlation in the expression between CD44v6 mRNA and nm23-H1 mRNA in HCC (P＜0.01).CONCLUSION Detection of CD44v6 mRNA and nm23-H1 mRNA may be useful for tumor invasion and metastasis in HCC.INTRODUCTIONCD44 is a cell surface transmembrane glycoprotein. As a kind of adhesive molecule, it participates in cell-cell and cell-matrix adhesion and interactions. Many studies revealed a correlation between high-level expression of CD44, especially CD44v and tumor invasion, metastasis and prognosis. The exon 6v containing isoforms may be an independent diagnostic parameter[1,2]. Some other studies, however, had different results[3,4]. Some researches showed a reverse correlation between the expression of nm23-H1 mRNA and tumor metastasis[5,6]. In order to evaluate the relationship between the expression of CD44v6 mRNA and nm23-H1 mRNA and tumor invasive and metastatic potential in HCC and to evaluate the relationship in the expression between CD44v6 mRNA and nm23-H1 mRNA, we detected their expression in HCC by in situ hybridization.

Expression of human chorionic gonadotropin, CD44v6 and CD44v4/5 in esophageal squamous cell carcinoma

AIM： To study the relationship between the expression of human chorionic gonadotropin （HCG）, CD44v6, CD44v4/5 and the infiltration, metastasis of esophageal squamous cell carcinoma. METHODS： By labeled streptavidin-biotin technique, the expressions of HCG, CD44v6, and CD44v4/5 in 42 patients with esophageal squamous cell carcinoma were examined. RESULTS： The positive rate of HCG expression in patients with lymph node metastasis was 85.71% （18/21）, higher than that （57.14%, 12/21） in those without lymph node metastasis （P〈0.05）. The positive rate of CD44v6 expression was 71.43% （15/21） in lymph node metastasis group, and 38.09% （8/21） in nonmetastasis group; there was a significant difference between the two groups （P〈0.05）. The positive rate of CD44v4/5 expression was 76.19% （16/21） in lymph node metastasis group, and 42.86% （9/21） in non-metastasis group; there was also a significant difference between them （P〈0.05）. From grade Ⅰ to grade Ⅲ in differentiation, the positive rate of HCG expression was 84.62% （11/13）, 70.59% （12/17） and 58.33% （7/12）, respectively, there was no significant difference among them （P〉0.05）. The positive rate of CD44v6 expression in grades Ⅰ-Ⅲ of cancer tissues was 76.92% （10/13）, 52.94% （9/17）, and 33.33% （4/12） respectively; there was no significant difference among them. The positive rate of CD44v4/5 expression in grades Ⅰ-Ⅲ of cancer tissues was 69.23% （9/13）, 64.71% （11/17）, and 41.67% （5/12） respectively; there was no significant difference among the three groups. There was no correlation between the positive rates of HCG and CD44v6, CD44v4/5 expression. Cancer cells in carcinomatous emboli and those infiltrating into vascular wall strongly expressed HCG, CD44v6, and CD44v4/5. CONCLUSION： Expression of HCG, CD44v6, and CD44v4/5 in esophageal squamous cell carcinoma is related to its infiltration and metastasis. HCG, CD44v6, and CD44v4/5 have different effects on the infiltration and metastasis of esophageal squamous cell carcinoma.

Expression and correlation of CD44v6, vascular endothelial growth factor, matrix metalloproteinase-2, and matrix metalloproteinase-9 in Krukenberg tumor

AIM： To explore the expression and correlation of CD44v6, vascular endothelial growth factor （VEGF）, matrix metalloproteinase （MMP）-2 and matrix metalloproteinase （MMP）-9 in Krukenberg and primary epithelial ovarian carcinoma. METHODS： The expressions of CD44v6, VEGF, MMP-2 and MMP-9 were detected by immunohistochemical method in 20 cases of normal ovarian tissues, 38 cases of Krukenberg tumor and 45 cases of primary epithelial ovarian carcinoma. RESULTS： The expression of CD44v6 （primary epithelial ovarian carcinoma tissue vs normal ovarian tissue： χ^2= 4.516, P= 0.034; Krukenberg tumor tissue vsnormal ovarian tissue： χ^2 = 19.537, P = 0.001） and VEGF （primary epithelial ovarian carcinoma tissue vs normal ovarian tissue： P = 0.026; Krukenberg tumor tissue vs normal ovarian tissue： χ^2 = 22.895, P = 0.001） was significantly higher in primary epithelial ovarian carcinoma tissue and Krukenberg tumor tissue than in normal ovarian tissue. The positive expression rate of MMP-2 and MMP-9 was 0% in the normal ovarian tissue. The positive expression rate of CD44v6 （ χ^2= 10.398, P= 0.001）, VEGF （ χ^2= 13.149, P = 0.001）, MMP-2 （ χ^2 = 33.668, P = 0.001） and MMP-9 （ χ^2= 38.839, P = 0.001） was remarkably higher in Krukenberg tumor than in primary epithelial ovarian carcinoma. The correlation of CD44v6, VEGF, MMP-2, and MMP-9 was observed in primary epithelial ovarian carcinoma and Krukenberg tumor. CONCLUSION： CD44v6, VEGF, MMP-2, and MMP-9 are involved in ovarian carcinoma, gastric cancer and Krukenberg tumor. Detection of CD44v6, VEGF, MMP-2 and MMP-9 may contribute to the diagnosis of ovarian carcinoma, gastric cancer, and Krukenberg tumor.

Expression of Bmi-1,P16,and CD44v6 in Uterine Cervical Carcinoma and Its Clinical Significance

Objective Bmi-1, a putative proto-oncogene, is a core member of the polycomb gene family, which is expressed in many human tumors. The p16 protein negatively regulated cell proliferation, whereas CD44v6 is associated with proliferation as an important protein. Additionally, CD44v6 is an important nuclear antigen closely correlated to tumor metastasis. Tlle present study aims to investigate the expression and significance of Bmi-1, p16, and CD44v6 in uterine cervical carcinoma （UCC）. Methods A total of 62 UCC, 30 cervical neoplasic, and 20 normal cervical mucosal tissues were used ill the current study. The expression of Bmi-1, p16, and CD44v6 in these tissues was determined using immunohistochemical assay. The relationships among the expression of these indices, the clinicopathologic features of UCC, and the survival rate of UCC patients were also discussed. The correlation between Bmi-1 protein expression and p16 or CD44v6 protein in UCC was analyzed. Results The expression of Bmi-l, p16, and CD44v6 was significantly high in cervical carcinoma compared with that in tlle cervical neoplasia and normal colorectal mucosa （P〈0.05）. The over-expression of Bmi-1 protein in UCC was apparently related to the distant metastasis （P〈0.01） and the tumor, nodes and metastasis-classification, i.e. the TNM staging, World Health Organization （P〈0.05）. Nevertheless, the positive expression of p16 protein in UCC was not significantly associated with the clinicopathologic features （P〉0.05）. The Kaplan-Meier survival analysis showed that the over-expression of Bmi-1 significantly decreased the survival rate of UCC patients （P〈0.05）. A strong correlation indicated that there was statistical significance between the expression of Bmi-1 and CD44V6 proteins in UCC （r=0.419, P=0.001）. Conclusions The over-expression of Bmi-1 and CD44v6 protein closely correlate to the tumorigenesis, metastasis, and prognosis of UCC. Bmi-I and CD44v6 may be used to predict the prognosis of cervical carcinoma. Bmi-1 may indirectly regulate the expression of CD44v6 in UCC patients. The positive expression of p16 protein is possibly associated with the tumorigenesis, but not with the metastasis or prognosis of UCC.

Expression of CD44v6 gene in normal human peripheral blood

AIM: To investigate if CD44v6 could be used as a molecular marker of cancer progression and metastasis through the detection of CD44v6 gene expression in normal human peripheral blood.METHODS: RNA was extracted from the peripheral blood mononuclear cells of 50 healthy donors, the expression of CD44v6 was investigated using reverse transcriptasepolymerase chain reaction (RT-PCR).RESULTS: CD44v6 mRNA was detected in 58% of healthy volunteers under the proper controls.CONCLUSION: Our results suggest that the measurement of CD44v6 expression in peripheral blood by RT-PCR is not suitable for detection of circulating tumor cells.

PEI-PEG as a siRNA Genetic Vector Demonstrating Interference in the Expression of CD44v6 Protein in Gastric Cancer Cells

OBJECTIVE To investigate the effect of polyethylene imine glycol （PEI-PEG）/siRNA nanocomposites in the in vitro transfection of human gastric cancer SGC7901 cell lines and the down-regulation of gene expression of the adherence factor CD44v6. METHODS PEI-PEG/siRNA nanoparticles, in different N/P ratios, were synthesized and transfected into gastric cancer cells. Lipo2000/siRNA was used in the control group. The transfection efficiencies were observed under fluorescence microscope. The cytotoxicity of the nanoparticles was measured using the MTT assay （mononuclear cell direct cytotoxicity assay）, and the down-regulation effect of siRNA on CD44v6 gene was evaluated by Western blot. Based on the different N/P ratios, PEI-PEG/siRNA composites were synthesized and transfected into gastric cancer cells. Lipo2000/siRNA was used in the controls. The transfection efficiency was observed under fluorescence microscope. The cytotoxicity of the nanoparticles was measured using the MTT assay and the down-regulation effect of siRNA on CD44v6 gene was evaluated by Western blot. RESULTS After transfection, the transfection efficiency of the PEI-PEG/siRNA nanocomposites increased incrementally in N/P ratio value. The transfection efficiency improved with an increase in N/P ratio. When the N/P value was 15, fluorescence became more intense in the PEI-PEG/siRNA group than in the Lipo2000/siRNA group. At the same time, cell viability was （80.4 ± 5.6）% in the MTT reduction assay, which was similar to that in the Lipo2000/siRNA group. The results of Western blot analysis showed that the expression level of CD44v6 protein decreased to （59.7 ± 3.0）% after siRNA-CD44v6 was inhibited. CONCLUSION PEI-PEG could effectively form the nanocomposite in combination with siRNA, be transfected into the SGC7901 gastric cancer cell lines and inhibit CD44v6 protein expression. Moreover, as a genetic carrier, PEI-PEG copolymer has greater advantages, including high transfection e. ciency, less cytotoxicity and an easily alterable vector structure.

The detection of micrometastases in the peripheral blood of patients with breast cancer for hSBEM mRNA and CD44V6 mRNA

Objective： Successful treatment of breast cancer greatly depends on the early detection of its metastasis, therefore a sensitive and specific biomarker for detecting dissemination of the cancer cells will help to achieve this goal. This study was to evaluate the prognostic significance of human small breast epithelial mucin （hSBEM） and CD44V6 in breast cancer. Methods： The expressions of hSBEM mRNA and CD44V6 mRNA were detected with nested reverse transcription polymerase chain reaction （nested RT-PCR） in 67 samples of breast cancer and adjacent normal breast tissue, 16 samples of breast benign lesions tissue, and 67 specimens of peripheral blood from patients with breast cancer, 16 specimens of benign breast lesions, 20 specimens of healthy volunteers, and 25 （each five cases） other carcinomas tissue samples, including those of gastric carcinoma, colorectal carcinoma, esophageal carcinoma, lung carcinoma, and ovary carcinoma, were analyzed for hSBEM mRNA expression by nested RT-PCR. Results： hSBEM mRNA expression was observed in 62/67 （92.54%） of breast cancer, 14/16 （87.50%） of breast benign lesions and 59/67 （88.05%） of normal breast tissue, with no significant differences between them （P 〉 0.05）. None of the samples from other cancer tissues were positive. In peripheral blood the expression of hSBEM mRNA was detected in 34/67 （50.75%） from patients with breast cancer, with significant increasing （P 〈 0.05） in the cases of metastatic disease （stage Ⅳ） and those with lymph node metastasis compared with localized disease （stage Ⅰ, Ⅱ and Ⅲ） and without lymph node metastasis, but its expression was not found in peripheral blood of patients with benign breast lesions or healthy volunteers. Although CD44V6 mRNA was significantly higher in breast cancer than in benign breast lesions tissue and normal breast tissue, its expression in peripheral blood show no significant difference （P 〉 0.05） in the patients with breast cancer （82.09%）, benign breast lesion （75.00%）, or healthy volunteers （70.00%）. The expressions of hSBEM mRNA and CD44V6 mRNA had no correlation with the age of the patients, size of primary tumor, histological type and estrogen or progestin receptor status （P 〉 0.05）. Conclusion： hSBEM mRNA, as assessed by nested RT-PCR, shows a mammary-specific and mammary-sensitive expression, and is a sensitive indicator of hematogeneous spread of breast cancer cell, while CD44V6 shows low sensitivity and specificity in detecting dissemination of breast cancer cell in peripheral blood, hSBEM mRNA is a promising molecular biomarker for detecting breast cancer micrometastases.

The study on quantitative expression of CD44v6mRNA by real-time RT-PCR with the micro-metastases of gastric cancer

Objective： To study the expression of CD44 correlation and the ability of metastasis of tumor cells in gastric carcinoma, and to find the correlation of the quantitative of CD44V6mRNA and the histology expression of CD44v6 in tumors with the clinic-pathologic features, and to make the quantitative expression of CD44v6mRNA. Methods： Twenty patients with gastric carcinoma, 4 patients with gastritis, and 10 apparently healthy controls were recruited. Blood samples were obtained before surgery. 10 days after surgery, the blood samples were obtained again. Serum CIM4v6mRNA in all cases was measured by real-time quantitative PCR. Results： Serum CIM4V6mRNA was detectable in 20 of 20（ 100% ） gastric carcinoma cases, The expression level ranged from 4.9×10^2 copies/μg RNA to 3.2 ×10^5 copies/μg RNA, the average levels of peripheral blood was 3.9 ×10^4 copies/μg RNA, The expression level of pedpheral blood of gastric cancer after curative operation ranged from 5.5×10^0 copies/μg RNA to 7.6 ×10^3 copies/μg RNA. After curative operation the expression level was decreased markedly. Conclusion： Serurn CIM4v6mRNA is expressed in the peripheral blood of gastric carcinoma patients. The expression level of CD44V6mRNA is obviously decreased after curative operation. An elevated level of CD44v6mRNA may serve as an indicator of lymph node metastasis （especially early metastasis） and bad prognosis in patients with gastric carcinoma.

Effects of TSH inhibition after total thyroidectomy on Tg, VEGF, TSGF, CD44V6, sIL-2R and T lymphocyte subsets in patients with differentiated thyroid carcinoma

Objective:To study the effects of TSH inhibition after total thyroidectomy on Tg, VEGF, TSGF, CD44V6, sIL-2R and T lymphocyte subsets in patients with differentiated thyroid carcinoma (DTC).Methods: A total of 100 patients with DTC in our hospital from January 2014 to January 2017 were enrolled in this study. The subjects were divided into the control group (n=50) and the treatment group (n=50) randomly. The control group was treated with thyroid hormone replacement therapy, the treatment group was treated with levothyroxine sodium oral therapy, the two groups were treated for 1 week. The serum Tg, VEGF, TSGF, CD44V6, sIL-2R and peripheral blood CD3+, CD4+, CD8+ of the two groups before and after treatment were compared.Results:There were no significant differences of the serum Tg, VEGF, TSGF, CD44V6, sIL-2R of the two groups before treatment. The serum Tg, VEGF, TSGF, CD44V6, sIL-2R of the two groups after treatment were significantly lower than before treatment, and that of the treatment group after treatment were significantly lower than the control group. There were no significantly differences of the peripheral blood CD3+, CD4+, CD8+ of the two groups before treatment. The peripheral blood CD3+, CD4+ of the two groups after treatment were significantly higher than before treatment, the peripheral blood CD8+ of the two groups after treatment were significantly lower than before treatment, and that of the treatment group after treatment were significantly better than the control group.Conclusion:TSH inhibition after total thyroidectomy for patients with DTC can reduce the serum Tg, VEGF, TSGF, CD44V6, sIL-2R levels, improve the cellular immunity function, and it was worthy clinical application.

Relationship between the Expression of CD44v6 and Development,Progress, Invasion and Metastasis of Laryngeal Carcinoma

The expression of CD44v6 and its relationship with the development, progress, invasion and metastasis of laryngeal carcinoma was investigated. The expression and content of CD44v6 mRNA in tissuess were detected by both RT-PCR and FCM which were respectively extracted from normal laryngeal mucosa, leukoplakia of larynx, laryngeal papilloma, polyp of vocal cord, tissues of laryngeal carcinoma, metastatic and nonmetastatic lymph nodes of neck, and tissues close to carcinoma. The outcome of RT-PCR indicated that the expression rate of CD44v6 mRNA involved in tissues of laryngeal carcinoma and metastatic lymph nodes of neck was the highest (90 %-100 %) compared with that of leukoplakia of larynx, laryngeal papilloma, tissues close to carcinoma by 0.5 cm (55.56 %-60.00 %) and that of normal laryngeal mucosa, polyp of vocal cord, nonmetastatic lymph nodes and tissues close to carcinoma by 1.0 cm was the lowest ( 13.33 %-20 %). The result from FCM was highly consistent with that from RT-PCR. It was suggested that CD44v6 was closely related with the development, progress, invasion and metastasis of laryngeal carcinoma. The outcome from the tissues close to carcinoma by different distance could do help to the determination of incisal edge in surgery abstractly.

The expression and clinical significance of KAI1 and CD44v6 protein in human osteosarcoma

Objective:To investigate the expressions of KAI1 and CD44v6 in human osteosarcoma and the relationship between expressions of them and their clinic pathological features and prognosis.Methods:The expressions of KAI1 and CD44v6 in 87 samples with osteosarcoma were detected by S-P immunohistochemistry.Results:Expression of KAI1 had correlation with metastasis of osteosarcoma,and was strongly associated with differentiation of tumor cells.The expression of CD44v6 in osteosarcoma had correlation with metastasis.There was no difference between the expression of KAI1 and CD44v6.Cox model analysis showed that the prognostic factors were KAI1 expression,metastasis and Enneking surgical staging system.Conclusion:The abnormal expression of KAI1 and CD44v6 participate metastasis of osteosarcoma,KAI1 expression,metastasis and Enneking surgical staging system can be used to independently predict the prognosis of osteo-sarcoma patients.