Publications by authors named "Chengcong Chen"

Degradation pathways of the pesticide pyridaben in tea caused by ultraviolet photocatalytic degradation were identified using SERS and GC-MS. Pyridaben in tea decreased from 4.50 mg/kg to 3.

View Article and Find Full Text PDF

Purpose: Radiotherapy presents a curative approach for nasopharyngeal carcinoma (NPC); however, the cellular radiosensitivity heterogeneity limits its efficacy. Thus, investigating the specific mechanisms of radioresistance in NPC is crucial for identifying and employing effective radiosensitizing agents to enhance treatment success.

Methods And Materials: Radioresistant NPC cell lines HONE1-RR and SUNE1-RR were established.

View Article and Find Full Text PDF

Purpose: To develop a novel approach for increasing radiosensitivity in glioblastoma (GBM) by using targeted nanoparticles to deliver siRNA aimed at silencing the EGFR and RELA/P65 genes, which are implicated in radioresistance.

Patients And Methods: We engineered biodegradable, tumor-targeted, self-assembled, and stimuli-responsive peptide nanoparticles for efficient siRNA delivery. We evaluated the nanoparticles' ability to induce gene silencing and enhance DNA damage under radiation in vitro and in vivo.

View Article and Find Full Text PDF

Background: Glioblastoma (GBM) is an aggressive primary brain tumor with a high recurrence rate and poor prognosis. Necroptosis, a pathological hallmark of GBM, is poorly understood in terms of its role in prognosis, tumor microenvironment (TME) alteration, and immunotherapy.

Methods & Results: We assessed the expression of 55 necroptosis-related genes in GBM and normal brain tissues.

View Article and Find Full Text PDF

Background: Hepatitis B core antibody (anti-HBc) is commonly present in patients with chronic hepatitis B virus (HBV) infection and serves as a marker of humoral immunity. Herein, we aim to investigate the correlation between anti-HBc and antiviral immune response and its putative role in HBV control.

Methods: Quantitative anti-HBc and levels of anti-HBc subtypes were measured in chronic hepatitis B (CHB) patients.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers investigated the expression of FAP-derived CXCL1 in nasopharyngeal carcinoma (NPC) to identify its potential as a biomarker for predicting distant metastasis and its relationship with PD-L1 expression.
  • The study involved 345 patients and revealed a CXCL1_FAP phenotype in cancer-associated fibroblasts (CAFs) that effectively categorized patients into low and high-risk groups for metastasis based on their survival outcomes.
  • The findings suggest that the CXCL1_FAP phenotype serves as an independent prognostic factor and may enhance the effectiveness of anti-PD-1/PD-L1 immunotherapy in advanced NPC.
View Article and Find Full Text PDF

Gastric cancer, the fifth most prevalent cancer worldwide, is often diagnosed in advanced stages with limited treatment options. Examining the tumor microenvironment (TME) and its metabolic reprogramming can provide insights for better diagnosis and treatment. This study investigates the link between TME factors and metabolic activity in gastric cancer using bulk and single-cell RNA-sequencing data.

View Article and Find Full Text PDF

Background: We aim to compare the prognostic value of organ-specific dynamics with the sum of the longest diameter (SLD) dynamics in patients with metastatic colorectal cancer (mCRC).

Methods: All datasets are accessible in Project Data Sphere, an open-access platform. The tumor growth inhibition models developed based on organ-level SLD and SLD were used to estimate the organ-specific tumor growth rates (KGs) and SLD KG.

View Article and Find Full Text PDF

Background: Liver hepatocellular carcinoma (LIHC) is a highly malignant tumor with high metastasis and recurrence rates. Due to the relation between lipid metabolism and the tumor immune microenvironment is constantly being elucidated, this work is carried out to produce a new prognostic gene signature that incorporates immune profiles and lipid metabolism of LIHC patients.

Methods: We used the "DEseq2" R package and the "Venn" R package to identify differentially expressed genes related to lipid metabolism (LRDGs) in LIHC.

View Article and Find Full Text PDF

Nasopharyngeal carcinoma (NPC) is endemic in Southern China and Southeast Asia. Hyperthermia is widely used in combination with chemotherapy and radiotherapy to enhance therapeutic efficacy in NPC treatment, but the underlying anti-tumor mechanisms of hyperthermia remain unclear. Complement C3 has been reported to participate in the activation of immune system in the tumor microenvironment, leading to tumor growth inhibition.

View Article and Find Full Text PDF

Background: Inhibitors of programmed cell death 1 (PD-1)/programmed cell death ligand 1(PD-L1) checkpoint have been approved for metastatic triple negative breast cancer (mTNBC) in patients positive for PD-L1 expression. Negative results from the recent phase III trials (IMPassion131 and IMPassion132) have raises questions on the efficacy of PD-1/PD-L1 checkpoint inhibitors and the predictive value of PD-L1 expression. Here we attempt to systematically analyze the biomarker value of PD-L1 expression for predicting the response of PD-1/PD-L1 checkpoint inhibitors in mTNBC.

View Article and Find Full Text PDF

Background And Objective: The designs of first-in-human (FIH) studies in oncology (e.g., 3 + 3 dose escalation design) usually do not provide a sufficient sample size to determine the dose-response relationship for efficacy.

View Article and Find Full Text PDF

Background: This study sought to examine the expression and mutation status of fibroblast growth factor receptor 3 (FGFR3) in non-small cell lung cancer (NSCLC) tissues and explore the prognostic potential of FGFR3 in NSCLC.

Methods: Immunohistochemistry (IHC) was used to evaluate the FGFR3 protein expression of 116 NSCLC tissues. Sanger sequencing was used to examine the mutation status of exons 7, 10, and 15 in FGFR3.

View Article and Find Full Text PDF

Background And Aim: Pyroptosis is an inflammatory form of programmed cell death implicated in inflammation and disease. Moreover, inducing pyroptosis has been appreciated as anti-cancer therapy for its ability to unleash anti-cancer immune responses.

Methods: Utilizing the data available in The Cancer Genome Atlas (TCGA), pyroptosis-related genes' (PRGs) expression, genomic aberrations, and clinical significance were systematically analyzed in pan-cancer.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to create a nomogram using pre-treatment tumor size and lymph node (LN) size to predict overall survival (OS) in patients with nasopharyngeal carcinoma (NPC).
  • The research utilized data from 1083 NPC patients for training purposes and 266 patients for validation, incorporating factors like age, TNM stage, and tumor sizes into their analysis with a multivariate Cox regression model.
  • Results showed that the nomogram reliably predicts OS, achieving a C-index of 0.7367 in the training cohort and 0.795 in the validation cohort, indicating its strong predictive ability for patient outcomes.
View Article and Find Full Text PDF

Background: Gastric cancer (GC) represents a major global clinical problem with very limited therapeutic options and poor prognosis. Necroptosis, a recently discovered inflammatory form of cell death, has been implicated in carcinogenesis and inducing necroptosis has also been considered as a therapeutic strategy.

Objective: We aim to evaluate the role of this pathway in gastric cancer development, prognosis and immune aspects of its tumor microenvironment.

View Article and Find Full Text PDF

Background: Glioblastoma (GBM) is the most common and aggressive form of primary brain tumor. Although numerous postoperative therapeutic strategies have already been developed, including radiotherapy, tumors inevitably recur after several years of treatment. The coinhibitory molecule B7-H4 negatively regulates T cell immune responses and promotes immune escape.

View Article and Find Full Text PDF

The overall survival of patients with lower grade glioma (LGG) that might develop into high-grade malignant glioma shows marked heterogeneity. The currently used clinical evaluation index is not sufficient to predict precise prognostic outcomes accurately. To optimize survival risk stratification and the personalized management of patients with LGG, there is an urgent need to develop an accurate risk prediction model.

View Article and Find Full Text PDF

Background: Patients with type 2 diabetes mellitus (T2DM) and heart failure (HF) are at higher risk of mortality and hospitalization for heart failure (HHF). A recent study showed that sodium-glucose cotransporter 2 (SGLT-2) inhibitors may be a promising choice.

Methods: We searched the PubMed, Embase, and Cochrane databases of clinical trials for randomized controlled trials investigating the long-term effects of SGLT-2 inhibitors in patients with T2DM and HF compared with placebo.

View Article and Find Full Text PDF

Cancer patients are alleged to have poor coronavirus disease 2019 (COVID-19) outcomes. However, no systematic or comprehensive analyses of the role and mechanisms of COVID-19 receptor-related regulators in cancer are available. We comprehensively evaluated the genomic alterations and their clinical relevance of six COVID-19 receptor-related regulators [transmembrane serine protease 2 (TMPRSS2), angiotensinogen (AGT), angiotensin-converting enzyme 1 (ACE1), solute carrier family 6 member 19 (SLC6A19), angiotensin-converting enzyme 2 (ACE2), and angiotensin II receptor type 2 (AGTR2)] across a broad spectrum of solid tumors.

View Article and Find Full Text PDF

Melatonin, an endogenous hormone, plays protective roles in cancer. In addition to regulating circadian rhythms, sleep, and neuroendocrine activity, melatonin functions in various survival pathways. However, the mechanisms of melatonin regulation in cancer remain unknown.

View Article and Find Full Text PDF

Purpose: Congenital hypothyroidism (CH) is the most common neonatal endocrine disease; its early detection ensures successful treatment and prevents complications. However, its molecular etiology remains unclear.

Methods: We used second-generation sequencing to detect 28 pathogenic genes in 15 Chinese Han patients with CH in Shenzhen, China, and analyzed the genetic pattern of the pathogenic genes through their pedigrees.

View Article and Find Full Text PDF

Persistent antigen exposure during chronic hepatitis B infection leads to exhausted immune responses, thus impeding viral control. In recent years, immunometabolism opens new therapeutic possibilities for the modulation of immune responses. Herein, we investigated the immunomodulatory effect of L-carnitine (L-Cn) on immune cells in chronic HBV infection.

View Article and Find Full Text PDF

Background: The outcome of hepatitis B virus (HBV) infection is significantly affected by host immune response; herein, we aim to dissect the effect of L-carnitine (L-Cn) on germinal center (GC)-related immune cells and the influence on the prognosis of HBV infection.

Methods: In vitro and in vivo experiments were performed in patients with chronic HBV infection and a hydrodynamic injection mouse model.

Results: In vitro assays revealed that L-Cn significantly reduced GC-related immune responses and enhanced immunosuppressive profiles.

View Article and Find Full Text PDF

Introduction And Objectives: The oncogene diencephalon/mesencephalon homeobox 1 (DMBX1) is widely overexpressed in a variety of human cancers. The present study aimed to analyze the expression and clinical importance of DMBX1 in nonneoplastic tissues and tumor tissues from patients with hepatocellular carcinoma (HCC).

Materials And Methods: DMBX1 expression in HCC and adjacent nontumor tissues was analyzed using immunohistochemical staining.

View Article and Find Full Text PDF