Promoter methylation is an important mechanism of regulating E-cadherin expression. Methylation-specific PCR (MSP) assay was done to evaluate the promoter methylation status of E-cadherin gene in primary tumor samples from 23 cases of Chinese women with invasive ductal breast cancers. Western blotting assay was employed for E-cadherin and beta-actin expressions. Positive MSP results occurred in 26.1% (6/23) of primary tumor samples and none of four normal skin samples. These molecular events tended to occur in breast cancers associated with poor prognosis. Whereas the mean ratio of CDH1/beta-actin for six MSP-positive cases was 0.0290 +/- 0.0355, the mean ratio for 17 MSP-negative cases was 0.4726 +/- 0.5049 (P = 0.046). In conclusion, aberrant E-cadherin methylation preferentially occurs in invasive ductal breast cancer associated with poor prognosis and is one of the mechanisms of E-cadherin expression silence in breast cancers from Chinese women.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0024-3205(02)01843-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
PRMT1-Mediated Arginine Methylation Promotes Corneal Epithelial Wound Healing via Epigenetic Regulation of ANXA3.
Invest Ophthalmol Vis Sci
January 2025
State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, China.
Purpose: Protein arginine methyltransferase 1 (PRMT1) is an integral constituent of numerous cellular processes. However, its role in corneal epithelial wound healing (CEWH) remains unclear. This study investigates the impact of PRMT1 on cellular mechanisms underlying corneal epithelial repair and its potential to improve wound healing outcomes.
View Article and Find Full Text PDFEZH2-mediated downregulation of miR-155-5p contributes to prostate cancer cell malignancy through SMAD2 and TAB2.
Kaohsiung J Med Sci
January 2025
Department of Urology, Tianjin First Central Hospital, Tianjin, China.
miR-155 exhibits variable expression in different tumors and fulfills diverse biological roles. However, specific molecular mechanisms by which miR-155-5p, which is under-expressed in prostate cancer (PCa), operates are yet to be elucidated. The role of the enhancer of zeste 2 (EZH2)/miR-155-5p axis in PCa was determined by using bioinformatics tools and performing luciferase reporter assay, chromatin immunoprecipitation PCR, CCK-8 assays, cell migration and invasion assays, RNA isolation, reverse transcription quantity (RT-qPCR) and Western blot.
View Article and Find Full Text PDFBiomarkers.
Alzheimers Dement
December 2024
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
Background: Whole genome methylation sequencing (WGMS) in blood identifies extensive differential DNA methylation between persons who are cognitively unimpaired (CU) and those with late-onset dementia due to Alzheimer's disease (AD). Here we investigate differentially methylated positions (DMPs) in persons with mild cognitive impairment (MCI) compared to persons with and without AD.
Method: WGMS data quantified DNA methylation levels at 25,406,945 CpG loci in 382 blood samples from 99 persons with MCI, 109 persons with AD and 174 cognitively unimpaired persons in the Wisconsin Alzheimer's Disease Research Center (WADRC) and the Wisconsin Registry for Alzheimer's Prevention (WRAP).
SIX1 aggravates the progression of spinal cord injury in mice by promoting M1 polarization of microglia.
Sci Rep
January 2025
Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China.
Inflammation aggravates secondary damage following spinal cord injury (SCI). M1 microglia induce inflammation and exert neurotoxic effects, whereas M2 microglia exert anti-inflammatory and neuroprotective effects. The sine oculis homeobox (SIX) gene family consists of six members, including sine oculis homeobox homolog 1 (SIX1)-SIX6.
View Article and Find Full Text PDFGlucocorticoid Receptor Gene (NR3C1) Methylation Childhood Maltreatment Multilevel Reward Responsiveness and Depressive and Anxiety Symptoms: A Neuroimaging Epigenetic Study.
Neuroimage
January 2025
School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China. Electronic address:
Background: Although epigenomic and environment interactions (Epigenome × Environment; Epi × E) might constitute a novel mechanism underlying reward processing direct evidence is still scarce. We conducted the first longitudinal study to investigate the extent to which DNA methylation of a stress-related gene-NR3C1-interacts with childhood maltreatment in association with young adult reward responsiveness (RR) and the downstream risk of depressive (anhedonia dimension in particular) and anxiety symptoms.
Method: A total of 192 Chinese university students aged 18∼25 (M = 21.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!