AI Article Synopsis

  • TRIM29 is a protein involved in inflammatory and cancer processes, particularly in gastric cancer, where its role has not been fully understood.
  • Researchers found that TRIM29 levels are lower in gastric cancer tissues compared to normal tissues, and this reduction is linked to hypermethylation of its gene.
  • TRIM29 enhances T-cell immunity against tumors by interacting with another protein, IGF2BP1, which affects the stability of PD-L1, suggesting that this axis could be a useful marker and target for gastric cancer treatment.

Article Abstract

Tripartite motif-containing protein 29 (TRIM29) is a member of TRIM family protein which has been reported to play a role in the progress of inflammatory and cancer diseases. However, its specific role in gastric cancer (GC) has yet to be fully understood. Here, we investigated the expression of TRIM29 in gastric cancer and its functions in the antitumor immunity. TRIM29 expression was lower in tumor tissues than that in paired normal tissues. Lower expression of TRIM29 was related to aberrant hypermethylation of CpG islands in TRIM29 gene. Comprehensive proteomics and immunoprecipitation analyses identified IGF2BP1 as TRIM29 interactors. TRIM29 interacted with IGF2BP1 and induced its ubiquitination at Lys440 and Lys450 site by K48-mediated linkage for protein degradation. IGF2BP1 promoted PD-L1 mRNA stability and expression in a 3'UTR and mA-dependent manner. Functionally, TRIM29 enhanced antitumor T-cell immunity in gastric cancer dependent on the IGF2BP1/PD-L1 axis in vivo and in vitro. Clinical correlation analysis revealed that TRIM29 expression in patient samples was associated with CD8 immune cell infiltration in the GC microenvironment and the overall survival rates of GC patients. Our findings revealed a crucial role of TRIM29 in regulating the antitumor T-cell immunity in GC. We also suggested that the TRIM29/IGF2BP1/PD-L1 axis could be used as a diagnostic and prognostic marker of gastric cancer and a promising target for GC immunotherapy.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.canlet.2023.216510DOI Listing

Publication Analysis

Top Keywords

gastric cancer
20
trim29
11
antitumor immunity
8
expression trim29
8
trim29 expression
8
antitumor t-cell
8
t-cell immunity
8
cancer
6
gastric
5
expression
5

Similar Publications

Background: Capecitabine, a prodrug of 5-fluorouracil, is extensively utilized for the treatment of metastatic breast cancer, colorectal cancer, and gastric cancer. Nevertheless, there exist limitations in comprehending adverse reactions (AEs) in clinical practice. In this study, we investigated the distribution of AEs associated with capecitabine and explored potential rare adverse reactions by mining the Food and Drug Administration Adverse Event Reporting System (FAERS).

View Article and Find Full Text PDF

Background: Linitis plastica is a challenging diagnosis in the setting of a patient with previous breast cancer.

Case Presentation: We present a case of a 74-year-old Chinese Female with a history of breast cancer who presented with epigastric pain, nausea, early satiety, and weight loss of 5 kg in 3 months. Endoscopic diagnosis of linitis plastica was made, but subsequent management plans were dependent on accurate histological assessment in view of her oncological history.

View Article and Find Full Text PDF

Macrophage-derived cathepsin L promotes epithelial-mesenchymal transition and M2 polarization in gastric cancer.

World J Gastroenterol

December 2024

Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China.

Background: Advanced gastric tumors are extremely prone to metastasize the in 20%-30% of gastric cancer, and patients have a poor prognosis despite systemic chemotherapy. Peritoneal metastases from gastric cancer usually indicate the end stage of the disease without curative treatment.

Aim: To peritoneal metastasis for facilitating clinical therapy are urgently needed.

View Article and Find Full Text PDF

Comprehensive analysis of risk factors associated with submucosal invasion in patients with early-stage gastric cancer.

World J Gastroenterol

December 2024

Department of Gastroenterology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou 450000, Henan Province, China.

Background: Submucosal invasion in early-stage gastric cancer (GC) is a critical determinant of prognosis and treatment strategy, significantly influencing the risk of lymph node metastasis and recurrence. Identifying risk factors associated with submucosal invasion is essential for optimizing patient management and improving outcomes.

Aim: To comprehensively analyze clinical, imaging, and endoscopic characteristics to identify predictors of submucosal invasion in patients with early-stage differentiated GC.

View Article and Find Full Text PDF

Small cell lung cancer (SCLC) is a common type of primary lung cancer that contributes to approximately 15% of cases. It is closely associated with tobacco risk factors. It is also known as a type of lung cancer that has a high mortality rate within a short time due to its rapid growth rate (with tumor doubling time of 30 days) and its tendency to metastasize early in the disease process.

View Article and Find Full Text PDF

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!