No abstract available.
Carcinoma/*genetics ; Core Binding Factor Alpha 3 Subunit/*genetics ; Humans ; Thyroid Neoplasms/*genetics

OBJECTIVE: To study the mRNA level of runt-related transcription factor 3 (RUNX3) in children with bronchiolitis and its clinical significance in bronchiolitis. METHODS: A total of 54 young children with bronchiolitis were enrolled as the bronchiolitis group, among whom 28 with atopic constitution were enrolled in the atopic bronchiolitis group and 26 with non-atopic constitution were enrolled in the non-atopic bronchiolitis group. A total of 48 healthy young children were enrolled as the healthy control group, among whom 24 with atopic constitution were enrolled in the atopic healthy control group and 24 with non-atopic constitution were enrolled in the non-atopic healthy control group. Quantitative real-time PCR was used to measure the mRNA level of RUNX3 in peripheral blood mononuclear cells. ELISA was used to measure the serum levels of interleukin-4 (IL-4) and interferon gamma (IFN-γ). RESULTS: The bronchiolitis group had a significantly lower mRNA level of RUNX3 than the healthy control group, and the atopic bronchiolitis group had a significantly lower mRNA level of RUNX3 than the non-atopic bronchiolitis, atopic healthy control, and non-atopic healthy control groups (P<0.05). The bronchiolitis group had a significantly higher serum level of IL-4 than the healthy control group, and the atopic bronchiolitis group had a significantly higher serum level of IL-4 than the non-atopic healthy control group (P<0.05). The bronchiolitis group had a significantly lower serum level of IFN-γ than the healthy control group, and the atopic bronchiolitis group had a significantly lower serum level of IFN-γ than the non-atopic bronchiolitis, atopic healthy control, and non-atopic healthy control groups (P<0.05). The correlation analysis showed that the mRNA level of RUNX3 was negatively correlated with the serum level of IL-4 and was positively correlated with the serum level of IFN-γ (P<0.05). CONCLUSIONS Measurement of RUNX3 gene expression in peripheral blood mononuclear cells has a certain value in identifying children with atopic constitution at high risk of asthma among children with bronchiolitis.
Asthma ; Bronchiolitis ; Child ; Child, Preschool ; Core Binding Factor Alpha 3 Subunit ; genetics ; Humans ; Interferon-gamma ; Leukocytes, Mononuclear

PURPOSE: Emerging evidence indicates that runt-related transcription factor 3 (RUNX3) is an important tumor suppressor gene in several cancer types, including colorectal cancer (CRC). However, the clinical significance of RUNX3 inactivation in CRC remains unclear. The aim of this study was to examine the correlation between clinicopathologic factors and RUNX3 hypermethylation/expression in CRC. METHODS: Sixty-two CRC patients who were treated at the Soonchunhyang University College of Medicine were recruited in this study. The hypermethylation of CpG islands in the RUNX3 promoter and the expression of RUNX3 mRNA were identified by methylation-specific polymerase chain reaction (PCR) and reverse transcriptase-PCR, respectively. The expression of RUNX3 was determined by immunohistochemical staining. RESULTS: Of the 62 CRC tissue samples, 20 (32.3%) presented hypermethylated RUNX3 promoters. Aberrant RUNX3 hypermethylation was found to be associated with vascular (P = 0.006) and lymphatic (P = 0.002) invasion. Hypermethylation of RUNX3 was associated with poor survival outcomes (P = 0.038). However, expression of RUNX3 was not a prognostic factor (P = 0.363). CONCLUSION: Hypermethylation of RUNX3 may be a predictor of a poor prognosis in CRC.
Colorectal Neoplasms ; Core Binding Factor Alpha 3 Subunit ; CpG Islands ; Epigenomics ; Genes, Tumor Suppressor ; Humans ; Immunohistochemistry ; Methylation ; Polymerase Chain Reaction ; Prognosis ; RNA, Messenger ; Transcription Factor 3

Objective To establish a human colon cancer cell line HCT-116/5-FU resistant to 5-fluorouracil(5-FU)and explore the relationship between runt-related transcription factor 3(RUNX3)and drug resistance of colorectal cancer.Methods The human colon cancer cell line HCT-116/5-FU with resistance to 5-FU was established by low concentration gradient increment combined with high-dose intermittent shock.CCK-8 method was used to determine the half maximal inhibitory concentration(IC
Cell Line, Tumor ; Colonic Neoplasms/genetics* ; Core Binding Factor Alpha 3 Subunit ; Drug Resistance, Neoplasm ; Fluorouracil/pharmacology* ; Humans ; Transcription Factor 3

Objective To investigate the expression and correlation of Runt-related transcription factor 3(RUNX3)and enhancer of zeste homolog 2(EZH2)in rectal cancer,and to reveal the relationship between the expression of RUNX3 and EZH2 and the sensitivity of XELOX regimen to neoadjuvant chemotherapy in locally advanced rectal cancer patients. Methods The carcinoma and paracancerous tissues of 31 patients with rectal adenocarcinoma and no preoperative antitumor therapy were selected as cancer group and paracancer group,respectively.The relative mRNA levels of RUNX3 and EZH2 in the two groups were measured by real-time quantitative reverse transcription-polymerase chain reaction,and the protein levels were determined by immunohistochemical assay.The expression of RUNX3 and EZH2 was compared between cancer tissue and paracancerous tissue.The pre-treatment wax blocks of 26 patients with locally advanced rectal cancer who received 3 cycles of XELOX regimen as neoadjuvant chemotherapy before surgery were selected as the pre-neoadjuvant therapy group,and the postoperative pathological wax blocks were selected as the post-neoadjuvant treatment group.Tumor regression grade(TRG)was determined to evaluate the efficacy of neoadjuvant therapy.Immunohistochemical assay was used to detect the protein levels of RUNX3 and EZH2 in the two groups,and then the relationship between the expression patterns of the two proteins and the efficacy of neoadjuvant chemotherapy was analyzed. Results Compared with paracancerous tissue,the cancer tissue showed down-regulated mRNA level and reduced positive protein expression rate of RUNX3,while up-regulated mRNA level(
Core Binding Factor Alpha 3 Subunit/genetics* ; Enhancer of Zeste Homolog 2 Protein/genetics* ; Humans ; Neoadjuvant Therapy ; Rectal Neoplasms/drug therapy* ; Transcription Factor 3

OBJECTIVEIn order to elucidate role of RUNX3 gene in hepatocarcinogenesis, we detected genetic and epigenetic alteration of RUNX3 gene in hepatocellular carcinoma (HCC).

METHODSPCR-SSCP, analysis of loss of heterozygosity (LOH), sequencing and methylation-specific PCR (MSP) were used to detect mutation, LOH and DNA methylation of RUNX3 gene in 90 HCCs.

RESULTSNo mutation was found, but three single-nucleotide polymorphisms (SNP) were found and distributed over exon1 and exon4. 30.6% (11/36) of cases showed LOH; 54.4% (49/90) of cases was in hypermethylation. There is a significant correlation between LOH and major portal vein invasive or micro vessel invasion or intrahepatic metastasis.

CONCLUSIONHigh frequent hypermethylation and LOH of RUNX3 gene were found in HCC. Aberrant RUNX3 gene may play an important role in the development of HCC.

Carcinoma, Hepatocellular ; genetics ; Core Binding Factor Alpha 3 Subunit ; DNA Methylation ; DNA-Binding Proteins ; genetics ; Female ; Humans ; Liver Neoplasms ; genetics ; Loss of Heterozygosity ; Male ; Middle Aged ; Transcription Factors ; genetics

BACKGROUND/AIMS: RUNX3 (PEBP2alphaC/CBFA3/AML2) is a novel tumor suppressor gene in the human gastric carcinoma. The aims of this study were to determine the methylation of RUNX3 promoter and the association between RUNX3 methylation and the clinicopathological characteristics of patients with gastric carcinoma. METHODS: Seventy-nine patients with gastric carcinoma were studied prospectively from April 2005 to May 2007. The methylations of RUNX3 promoter on the gastric carcinoma specimens and the corresponding nonneoplastic mucosa were evaluated by methylation-specific polymerase chain reaction. RESULTS: Comparison of the results with the clinicopathological characteristics identified RUNX3 monoallelic methylation in 32.9% (26/79) of the gastric carcinoma patients and in 11.4% (9/79) of those with nonneoplastic mucosa (p=0.053). The monoallelic methylated gastric carcinoma specimens predominantly consisted of well- and moderately differentiated carcinomas (44.7%), with the unmethylated group constituting 22.0% of them (p=0.031). Among the 48 patients (60.8%) who underwent gastrectomy, there was no correlation between the two groups with regard to Lauren's classification (p=0.235), depth of invasion (p=0.990), nodal status (p=0.601), stage (p=0.900), lymphatic invasion (p=0.537), and vascular invasion (p=0.815). CONCLUSIONS: Methylation of the tumor suppressor gene RUNX3 might be one of the mechanisms involved in the pathogenesis of gastric carcinoma.
Core Binding Factor Alpha 3 Subunit ; Gastrectomy ; Genes, Tumor Suppressor ; Humans ; Methylation ; Mucous Membrane ; Polymerase Chain Reaction ; Prospective Studies ; Stomach Neoplasms

OBJECTIVETo analyze the relationships among the aberrant methylation of Runx3 gene promoter, the Runx3 protein expression and clinicopathological features in gastric cancer.

METHODSMethylation specific PCR was used to measure the promoter methylation status of Runx3 gene in tumor and the adjacent normal mucosal tissues from 40 patients with gastric cancer. Protein expression of Runx3 was measured by immunohistochemistry.

RESULTSThe frequency of promoter methylation of Runx3 gene in gastric cancer tissue(55.0%) was significantly higher compared to the adjacent normal tissues (12.5%)(P<0.01). The positive rate of protein expression of Runx3 in gastric cancer tissue(37.5%) was significantly lower compared to the adjacent normal tissues (100%). There was marked association between hypermethylation and negative protein expression (P<0.05). The frequency of Runx3 promoter methylation was associated with histological type, N grade, and tumor stage.

CONCLUSIONThe promoter hypermethylation is a main mechanism of reduced or loss expression of Runx3 gene, which may provide molecular diagnosis and stage evaluation of gastric cancer.

Adult ; Aged ; Core Binding Factor Alpha 3 Subunit ; genetics ; metabolism ; CpG Islands ; DNA Methylation ; Female ; Humans ; Middle Aged ; Neoplasm Staging ; Promoter Regions, Genetic ; Stomach Neoplasms ; diagnosis ; metabolism ; pathology

Adolescent ; Child ; Child, Preschool ; Core Binding Factor Alpha 3 Subunit ; genetics ; metabolism ; DNA Methylation ; Female ; Humans ; Infant ; Lymphoma ; genetics ; metabolism ; Male ; Promoter Regions, Genetic

OBJECTIVETo study the mutation in RH120480 fragment of RUNX3 gene among the Chinese patients with keloid.

METHODS20 samples of keloids were collected with each patient's venous blood sample as normal control group. The genomic DNA was extracted from each sample. RH120480 fragment of RUNX3 gene was amplified by Polymerase Chain Reaction (PCR). The amplification products were analyzed by denaturing high-performance liquid chromatography (DHPLC). Some fragments were sequenced directly and then compared with the GenBank data.

RESULTSBy DHPLC, the results of all the blood samples showed single chromatographic peak indicating homoduplexes, meanwhile the results of keloid tissue samples showed double peak indicating heteroduplexes. Through gene sequencing, 19 cases showed gene mutation among the 20 samples of keloid. The mutation incidence was 95%. Two mutation sites were detected including base A absence in 96th sites and base C insert in 279th sites. The base A absence rate was 90% (18/20) in keloid group, and 10% (2/20) in control group. The base C insert mutation rate was 95% (19/20) in keloid group, and 0% (0/20) in control group. There was significant difference in the mutation rate between two groups on the two mutation sites.

CONCLUSIONSThere is a strong correlation between the RH120480 fragment of RUNX3 gene mutation and Keloid. RUNX3 gene could be possibly a scar suppressor gene (SSG).

Adolescent ; Adult ; Core Binding Factor Alpha 3 Subunit ; genetics ; DNA ; genetics ; Female ; Humans ; Keloid ; genetics ; Male ; Middle Aged ; Mutation ; Young Adult