Publications by authors named "Zifeng Deng"

Article Synopsis
  • The study identified potential biomarkers in cell-free DNA (cfDNA) marked by 5-hydroxymethylcytosine (5hmC) that can detect colorectal cancer (CRC) up to 36 months prior to clinical diagnosis using samples from the PLCO Cancer Screening Trial.
  • Research utilized 5hmC-seal assays and machine learning on cfDNA from 201 CRC cases and 401 controls, producing a predictive detection model with promising accuracy (AUC values around 77% in training and 73% in validation sets), outperforming traditional risk factor assessments.
  • The 5hmC biomarkers hold potential for a minimally invasive test to enhance early CRC detection, thereby improving patient
View Article and Find Full Text PDF

Zearalenone (ZEN), a mycotoxin produced by Fusarium species, is known for its reproductive toxicity as an estrogen analogue. However, there are limited knowledge about its hepatointestinal toxicity, as well as the role that gut microbiota and metabolites play in this process. In this study, a total of 24 thirty-week-old hens were fed to investigate the hepatointestinal toxicity subjected to long-term ZEN consumption at 2.

View Article and Find Full Text PDF

A-kinase anchoring protein 95 (AKAP95) functions as a scaffold for protein kinase A. Prior work by our group has shown that AKAP95, in coordination with Connexin 43 (Cx43), modulates the expression of cyclin D and E proteins, thus affecting the cell cycle progression in lung cancer cells. In the current study, we confirmed that AKAP95 forms a complex with Cx43.

View Article and Find Full Text PDF

Methylation-based liquid biopsies show promises in detecting cancer using circulating cell-free DNA; however, current limitations impede clinical application. Most assays necessitate substantial DNA inputs, posing challenges. Additionally, underrepresented tumor DNA fragments may go undetected during exponential amplification steps of traditional sequencing methods.

View Article and Find Full Text PDF

Background: Colorectal cancer (CRC) is a leading cause of cancer-related mortality, and CRC detection through screening improves survival rates. A promising avenue to improve patient screening compliance is the development of minimally-invasive liquid biopsy assays that target CRC biomarkers on circulating cell-free DNA (cfDNA) in peripheral plasma. In this report, we identify cfDNA biomarker candidate genes bearing the epigenetic mark 5-hydroxymethylcytosine (5hmC) that diagnose occult CRC up to 36 months prior to clinical diagnosis using the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial samples.

View Article and Find Full Text PDF
Article Synopsis
  • Patients with primary sclerosing cholangitis (PSC) and inflammatory bowel disease (IBD) have a higher chance of getting type of colon cancer called colorectal neoplasia (CRN) in the upper part of their colon.
  • The study looked at how long and how badly they were inflamed to see if it linked to getting CRN.
  • It found that more inflammation in the upper colon meant a greater risk of developing CRN, suggesting that checking and treating inflammation regularly could help prevent cancer.
View Article and Find Full Text PDF

Purpose: Vascular endothelial growth factor receptors (VEGFRs) have been demonstrated to play a critical role in ischemic retinal diseases, as VEGFRs mediate hypoxia-induced neovascularization. Not only hypoxia, ischemia also induces the deficiency of glucose, yet its effects on VEGFR signal and neovascularization have seldom been studied. Bioinformatics analysis predicted that VEGFRs may be regulated by O-GlcNAcylation, while glucose deficiency influences the O-GlcNAcylation.

View Article and Find Full Text PDF
Article Synopsis
  • Gut stem cells help keep our intestines healthy, but when a specific protein called Mettl14 was removed from mouse gut cells, it caused serious problems like inflammation and stunted growth.
  • This loss of Mettl14 made some important stem cells die off, leading to even more issues in the gut.
  • Adding back a protein called GSDMC helped save the gut cells and prevent the mice from dying too soon, showing how important these proteins are for healthy intestines.
View Article and Find Full Text PDF

Arsenic is a widely existing pollutant in the environment, but the mechanism of occurrence and development of lung cancer by long-term arsenic exposure needs to be elucidated further. How the high and low doses of arsenic induce human bronchial epithelial cell transformation is yet to be elucidated. In the present study, human bronchial epithelial cells were exposed to varying high-dose sodium arsenite (NaAsO) for the short-term or treated with low dose for long-term.

View Article and Find Full Text PDF

Objective To investigate the effect of over-expression of nudix hydrolase 21 (NUDT21) on the proliferation of colon cancer HCT-116 cells and its mechanism. Methods The NUDT21 over-expression plasmid was constructed by Gibson assembly. The colony formation assay and CCK-8 assay were used to detect cell proliferation.

View Article and Find Full Text PDF

Congenital cataract is one of the most common causes of blindness in children. A rapid and accurate genetic diagnosis benefit the patients in the pediatric department. The current study aims to identify the genetic defects in a congenital cataract patient without a family history.

View Article and Find Full Text PDF

Clostridium difficile (C. difficile) is a Gram-positive, spore-forming, toxin-producing anaerobe that can cause nosocomial antibiotic-associated intestinal disease. Autolysin is a lytic enzyme that hydrolyzes peptidoglycans of the bacterial cell wall, with a catalytic domain and cell wall-binding domains, proven to be involved in bacterial cell wall remodeling and cell division.

View Article and Find Full Text PDF

Purpose: To explore the relationship between ocular position control ability and stereopsis recovery in children with intermittent exotropia, and to analyze the influencing factors of distance stereopsis recovery.

Methods: In this retrospective study, 78 children with small angle intermittent exotropia received vision training for 3 months. All patients were examined for distance stereopsis with the synoptophore and for near stereopsis with the Titmus stereogram before and after the training.

View Article and Find Full Text PDF

Because ADAM17 promotes colonic tumorigenesis, we investigated potential miRNAs regulating ADAM17; and examined effects of diet and tumorigenesis on these miRNAs. We also examined pre-miRNA processing and tumour suppressor roles of several of these miRNAs in experimental colon cancer. Using TargetScan, miR-145, miR-148a, and miR-152 were predicted to regulate ADAM17.

View Article and Find Full Text PDF

DNA 5-hydroxymethylcytosine (5hmC) modification is known to be associated with gene transcription and frequently used as a mark to investigate dynamic DNA methylation conversion during mammalian development and in human diseases. However, the lack of genome-wide 5hmC profiles in different human tissue types impedes drawing generalized conclusions about how 5hmC is implicated in transcription activity and tissue specificity. To meet this need, we describe the development of a 5hmC tissue map by characterizing the genomic distributions of 5hmC in 19 human tissues derived from ten organ systems.

View Article and Find Full Text PDF

Background: This study aimed to overexpress or silence connexin 43 (Cx43) and A-kinase anchoring protein 95 (AKAP95) in human A549 cells to explore their effects on cyclins and on G1/S conversion when the interrelationship of Cx43, AKAP95, and cyclin E1/E2 changes.

Methods: The study mainly used Western blot analysis and Co-immuno precipitation to detect the target protein in Cx43/AKAP95 over expressed human A549 cells, and the relationship of proteins Cx43, AKAP95 and Cyclin E during G1-S phase was explored with qualitative and quantitative analysis.

Results: The overexpression of Cx43 inhibited the expression of cyclin D1 and E1 by accelerating their degradation and reduced the Cdk2 activity that blocked the DNA transcription activity.

View Article and Find Full Text PDF

In the present study, we developed a nano-integrated diagnostic and therapeutic platform with oxidation-reduction reactions in tumor microenvironments (TMEs). The proposed platform resolved the contradiction of particle size between the enhanced permeability and retention (EPR) effect and tumor interstitial penetration, as well as poor circulation and low drug-loading efficiency. Flower-like MnO NPs were used as the core and modified with hyaluronate (HA) and HPtCl to obtain MnO-HA@HPtCl (MHP).

View Article and Find Full Text PDF

Carbon fiber reinforced polymer (CFRP) plates are widely used to retrofit or reinforce steel structures, and the debonding damage between the steel structure and the CFRP plate is a typical failure in strengthening steel structures. This paper proposes a new approach to detecting debonding between a steel beam and a reinforcing CFRP plate by using removable lead zirconate titanate (PZT)-based transducers and active sensing. The removable PZT-based transducers are used to implement the active sensing approach, in which one transducer, as an actuator, is used to generate stress wave, and another transducer, as a sensor, is used to detect the stress wave that propagates across the bonding between the steel beam and the reinforcing CFRP plate.

View Article and Find Full Text PDF

Aim: This study aimed to investigate the correlation between the expression of A-kinase anchor protein95 (AKAP95), p-retinoblastoma (phosphorylated Rb, p-Rb), cyclin D2, cyclin D3 and cyclin E2 in esophageal cancer tissues and clinicopathological indexes.

Method: The protein expression levels of AKAP95, p-Rb, cyclin D2/3 and cyclin E2 in 40 esophageal cancer tissues were detected using immunohistochemistry, and the correlation between them was analyzed.

Result: The percentage of p-Rb (Ser780)-, cyclin D2-, cyclin D3- and cyclin E2-positive samples was 62.

View Article and Find Full Text PDF

Background And Aims: As ulcerative colitis [UC]-associated colorectal cancer [CRC] and sporadic CRC differ in presentation and molecular features, we sought to evaluate differences in the impact of DNA methylation on gene expression.

Methods: DNA methylation was assessed in 11 UC-CRCs and adjacent tissue and 11 sporadic CRCs and adjacent tissue, using Illumina arrays. RNA sequencing was performed on 10 UC-CRCs and adjacent tissue and eight sporadic CRCs and adjacent tissues.

View Article and Find Full Text PDF

Identification of biological markers predicting the onset of neoplasia in patients with long-standing ulcerative colitis (UC) could allow for risk stratification in this population. In this study, we retrospectively identified subjects with chronic UC who developed colon neoplasia ( = 16) matched to UC patients who never developed neoplasia. RNA was extracted from archived colonic biopsies obtained at an interval of 1-2 years prior and 3-5 years prior to the onset of neoplasia.

View Article and Find Full Text PDF

Patients with ulcerative colitis are at increased risk for colorectal cancer, although mechanisms underlying neoplastic transformation are poorly understood. We sought to evaluate the role of microRNAs in neoplasia development in this high-risk population. Tissue from 12 controls, 9 ulcerative colitis patients without neoplasia, and 11 ulcerative colitis patients with neoplasia was analyzed.

View Article and Find Full Text PDF

Background: As mechanisms of neoplasia in patients with ulcerative colitis (UC) remain poorly understood, we sought to identify pathways of carcinogenesis in this high-risk population.

Methods: MicroRNA (miRNA) and mRNA expression was examined in nondysplastic rectosigmoid mucosa from UC patients with (n = 19) or without remote colon neoplasia (n = 23). We developed a method to identify miRNA-regulated pathways based on differentially expressed miRNAs and their putative mRNAs targets in the same samples.

View Article and Find Full Text PDF

Objective: To investigate the prevalence of dry eye disease (DED) and distribution of associated risk factors among a hospital-based population.

Methods: In this cross-sectional study, we collected detailed information of clinically defined moderate-to-severe patients with dry eye among a consecutive hospital-based population, including age trend, gender structure, frequency of symptoms, and distribution of associated environmental/occupational risk factors.

Results: Of 6,657 consecutive outpatients aged older than 20 years, symptomatic dry eye presented in 635 subjects (9.

View Article and Find Full Text PDF