190 results match your criteria: "Guangzhou Digestive Disease Center[Affiliation]"

Advanced oxidation protein products induce apoptosis in thyroid follicular epithelial cells through oxidative stress in Hashimoto's thyroiditis.

Int Immunopharmacol

January 2025

Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China. Electronic address:

Hashimoto's thyroiditis (HT) is a chronic autoimmune disorder primarily driven by T cell. The apoptosis of the follicular thyroid cells plays an important role in HT apart from the lymphocyte-mediated cytotoxicity. Advanced oxidation protein products (AOPPs), resulting from oxidative stress, are known to be involved in various inflammatory diseases.

View Article and Find Full Text PDF

PMN-MDSCs are responsible for immune suppression in anti-PD-1 treated TAP1 defective melanoma.

Clin Transl Oncol

January 2025

Department of General Surgery, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510013, Guangdong, China.

Introduction: The transporter associated with antigen processing (TAP) is a key component of the classical HLA I antigen presentation pathway. Our previous studies have demonstrated that the downregulation of TAP1 contributes to tumor progression and is associated with an increased presence of myeloid-derived suppressor cells (MDSCs) in the tumor microenvironment. However, it remains unclear whether the elevation of MDSCs leads to immune cell exhaustion in tumors lacking TAP1.

View Article and Find Full Text PDF

N6-methyladenosine RNA modification regulates the transcription of SLC7A11 through KDM6B and GATA3 to modulate ferroptosis.

J Biomed Sci

January 2025

Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.

Background: Recent studies indicate that N6-methyladenosine (mA) RNA modification may regulate ferroptosis in cancer cells, while its molecular mechanisms require further investigation.

Methods: Liquid Chromatography-Tandem Mass Spectrometry (HPLC/MS/MS) was used to detect changes in mA levels in cells. Transmission electron microscopy and flow cytometry were used to detect mitochondrial reactive oxygen species (ROS).

View Article and Find Full Text PDF

Background: Pancreatic cancer is characterized by a complex tumor microenvironment that hinders effective immunotherapy. Identifying key factors that regulate the immunosuppressive landscape is crucial for improving treatment strategies.

Methods: We constructed a prognostic and risk assessment model for pancreatic cancer using 101 machine learning algorithms, identifying OSBPL3 as a key gene associated with disease progression and prognosis.

View Article and Find Full Text PDF

Pancreatic cancer is a highly lethal malignancy with few effective treatment options. Connexin 31 (Cx31) is a membrane protein capable of forming hexameric channels to facilitate the exchange of metabolites and signaling molecules. Yet, the contribution of Cx31 to the onset and progression of pancreatic cancer remains to be understood.

View Article and Find Full Text PDF

Liquid-liquid separation in gut immunity.

Front Immunol

December 2024

Department of Gastrointestinal Surgery, Huadu District People's Hospital, Guangzhou, China.

Gut immunity is essential for maintaining intestinal health. Recent studies have identified that intracellular liquid-liquid phase separation (LLPS) may play a significant role in regulating gut immunity, however, the underlying mechanisms remain unclear. LLPS refers to droplet condensates formed through intracellular molecular interactions, which are crucial for the formation of membraneless organelles and biomolecules.

View Article and Find Full Text PDF

CD69CD103CD8 tissue-resident memory T cells possess stronger anti-tumor activity and predict better prognosis in colorectal cancer.

Cell Commun Signal

December 2024

Department of General Surgery, Guangzhou Digestive Disease Center, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510180, China.

Background: Colorectal cancer (CRC) is one of the most prevalent cancers worldwide. Despite advancements in therapeutic methodologies, it still causes a high rate of patient mortality. CD8 tissue-resident memory T (TRM) cells are strategically positioned to mediate effective anti-tumor responses.

View Article and Find Full Text PDF

From microbes to medicine: harnessing the power of the microbiome in esophageal cancer.

Front Immunol

November 2024

Integrated Clinical Microecology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.

Esophageal cancer (EC) is a malignancy with a high incidence and poor prognosis, significantly influenced by dysbiosis in the esophageal, oral, and gut microbiota. This review provides an overview of the roles of microbiota dysbiosis in EC pathogenesis, emphasizing their impact on tumor progression, drug efficacy, biomarker discovery, and therapeutic interventions. Lifestyle factors like smoking, alcohol consumption, and betel nut use are major contributors to dysbiosis and EC development.

View Article and Find Full Text PDF

Isolation and identification of patient-derived liver cancer stem cells and development of personalized treatment strategies.

J Transl Med

November 2024

Laboratory of Stem Cells and Translational Medicine, Institute for Medical Research, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510006, China.

Background: Liver cancer stem cells (LCSCs) are thought to drive the metastasis and recurrence, however, the heterogeneity of molecular markers of LCSCs has hindered the development of effective methods to isolate them.

Methods: This study introduced an effective approach to isolate and culture LCSCs from human primary liver cancer (HPLC), leveraging mouse embryonic fibroblasts (MEFs) as feeder cells in conjunction with using defined medium. Isolated LCSCs were further characterized by multiple approaches.

View Article and Find Full Text PDF

Enhanced tumor suppression in colorectal cancer via berberine-loaded PEG-PLGA nanoparticles.

Front Pharmacol

November 2024

Department of General Surgery, The First Affiliated Hospital, Jinan University, Guangzhou, China.

Article Synopsis
  • * Traditional drugs often struggle with rapid metabolism and low availability, while nanodrug delivery systems like PEG-PLGA can enhance drug efficiency and reduce side effects.
  • * The study found that NPBer, a nanomedicine encapsulating Ber, is taken up more effectively by CRC cells, leading to greater cell death and inhibition of tumor growth by targeting key cellular pathways and enhancing apoptosis.
View Article and Find Full Text PDF
Article Synopsis
  • The gut microbiome plays a significant role in improving the effectiveness of anticancer treatments, but there's little data on its role in predicting responses to neoadjuvant immunochemotherapy (NICT) for esophageal squamous cell carcinoma (ESCC).
  • This study analyzed fecal samples from ESCC patients and found that microbiome changes post-NICT included a reduction in harmful pathogens and an increase in beneficial bacteria.
  • The researchers developed a predictive model for NICT responses based on key microbial biomarkers, achieving high accuracy, indicating the gut microbiome could help personalize cancer treatments by informing clinical decisions.
View Article and Find Full Text PDF

Rapid Hemostasis Tumor In Situ Hydrogel Vaccines for Colorectal Cancer Chemo-Immunotherapy.

ACS Appl Mater Interfaces

November 2024

Department of General Surgery, Guangzhou Digestive Disease Center, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510180, People's Republic of China.

Due to the high heterogeneity and the immunosuppressive microenvironment of tumors, most single antigen tumor vaccines often fail to elicit potent antitumor immune responses in clinical trials, resulting in unsatisfactory therapy effects. Hence, personalized tumor vaccines have become a promising modality for cancer immunotherapy. Here, we have developed a tumor in situ hydrogel vaccine (AH/DA-OR) capable of rapid hemostasis for personalized tumor immunotherapy, composed of dopamine-grafted hyaluronic acid (HA/DA) combined with sodium alginate (ALG), with coloaded oxaliplatin (OXA) and resiquimod (R848).

View Article and Find Full Text PDF

Editorial Expression of Concern: Emerging role of bacterial outer membrane vesicle in gastrointestinal tract.

Gut Pathog

September 2024

Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; the First Affiliated Hospital, Southern University of Science and Technology), No. 1017, Dongmen North Road, Luohu District, Shenzhen, 518020, People's Republic of China.

View Article and Find Full Text PDF

Chronicity of HBV infection is a complex process influenced by both viral and host factors. Understanding the complex interplay between HBV and cellular immunity is critical. In this study, we used bulk expression datasets for CHB liver tissue from GSE83148 and GSE84044, and scRNA-seq data of CHB liver samples from GSE182159 to find critical genes and immune cells accounted for CHB.

View Article and Find Full Text PDF

Objective: We aimed to investigate the role of forkhead box O1 (FoxO1) inhibitor AS1842856 (AS) in nonalcoholic steatohepatitis (NASH) mice and the potential mechanisms.

Methods: Mice were given methionine-choline-sufficient (MCS), or methionine- and choline-deficient (MCD) diet for 5 weeks, along with AS (60 mg/kg) or vehicle gavage treatment (0.2 mL/day).

View Article and Find Full Text PDF

LINC00460/miR-186-3p/MYC feedback loop facilitates colorectal cancer immune escape by enhancing CD47 and PD-L1 expressions.

J Exp Clin Cancer Res

August 2024

Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510180, China.

Background: Long non-coding RNAs (LncRNAs) have been implicated as critical regulators of cancer tumorigenesis and progression. However, their functions and molecular mechanisms in colorectal cancer (CRC) still remain to be further elucidated.

Methods: LINC00460 was identified by differential analysis between human CRC and normal tissues and verified by in situ hybridization (ISH) and qRT-PCR.

View Article and Find Full Text PDF

Washed microbiota transplantation combined with biological agents promotes histological remission in refractory severe ulcerative colitis with recurrent intestinal infection: A case report.

Arab J Gastroenterol

November 2024

Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou 510180, China. Electronic address:

Ulcerative colitis (UC) is a chronic non-specific colitis disease. In recent years, fecal microbiota transplantation (FMT), including improved washed microbiota transplantation (WMT), and biological agents have helped improve the prognosis of patients with UC. However, a significant number of patients with moderate to severe UC do not get relief from glucocorticoids, immunosuppressants, and TNF-α antagonists.

View Article and Find Full Text PDF

The human gut microbiota significantly impacts health, including liver conditions like liver cirrhosis (LC) and spontaneous bacterial peritonitis (SBP). Immunoglobulin A (IgA) plays a central role in maintaining gut microbial balance. Understanding IgA's interplay with gut microbiota and liver health is crucial.

View Article and Find Full Text PDF

FOXO1 induced fatty acid oxidation in hepatic cells by targeting ALDH1L2.

J Gastroenterol Hepatol

October 2024

Department of Gastroenterology and Hepatology, Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China.

Background And Aim: Lipid metabolism disorder is the primary feature of numerous refractory chronic diseases. Fatty acid oxidation, an essential aerobic biological process, is closely related to the progression of NAFLD. The forkhead transcription factor FOXO1 has been reported to play an important role in lipid metabolism.

View Article and Find Full Text PDF

Modulation of lung regenerative therapy by micro-RNA in viral pneumonia.

J Med Virol

April 2024

Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China.

View Article and Find Full Text PDF

MFGE8 in exosomes derived from mesenchymal stem cells prevents esophageal stricture after endoscopic submucosal dissection in pigs.

J Nanobiotechnology

April 2024

Department of Surgery and State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, 999077, People's Republic of China.

Background: Endoscopic submucosal dissection (ESD) is the current standard treatment for early-stage esophageal neoplasms. However, the postoperative esophageal stricture after extensive mucosal dissection remains a severe challenge with limited effective treatments available. In this study, we introduced a chitosan/gelatin (ChGel) sponge encapsulating the adipose mesenchymal stem cells (ADMSCs)-derived exosomes (ChGel) for the prevention of esophageal stenosis after ESD in a porcine model.

View Article and Find Full Text PDF

Harnessing Sulforaphane Potential as a Chemosensitizing Agent: A Comprehensive Review.

Cancers (Basel)

January 2024

Cancer Biology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.

Recent advances in oncological research have highlighted the potential of naturally derived compounds in cancer prevention and treatment. Notably, sulforaphane (SFN), an isothiocyanate derived from cruciferous vegetables including broccoli and cabbage, has exhibited potent chemosensitizing capabilities across diverse cancer types of bone, brain, breast, lung, skin, etc. Chemosensitization refers to the enhancement of cancer cell sensitivity to chemotherapy agents, counteracting the chemoresistance often developed by tumor cells.

View Article and Find Full Text PDF

Nanoreceptors promote mutant p53 protein degradation by mimicking selective autophagy receptors.

Nat Nanotechnol

April 2024

School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, People's Republic of China.

Article Synopsis
  • Some cancers have a bad version of a protein called mutant p53 that makes tumors grow and resist drugs.
  • Scientists are working on new tiny tools called nanoreceptors that can help get rid of this bad protein by making it easier for the body to break it down.
  • These nanoreceptors have special parts that stick to the mutant p53 and help speed up its removal, and they showed promise in lab tests and in a special model of ovarian cancer.
View Article and Find Full Text PDF

Isothermal Amplification-Based Detection of Single-Base RNA N6-Methyladenosine.

Anal Chem

December 2023

Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.

N6-methyladenosine (mA) has recently gained much attention due to its diverse biological functions. Currently, the commonly used detection methods for locus-specific mA marks are complicated to operate, it is difficult to quantify the methylation level, and they have high false-positive levels. Here, we report a new method for locus-specific mA detection based on the methylate-sensitive endonuclease activity of MazF and the simultaneous amplification and testing (SAT) method, termed "mA-MazF-SAT".

View Article and Find Full Text PDF