Immune activity score to assess the prognosis, immunotherapy and chemotherapy response in gastric cancer and experimental validation.

Background: Gastric cancer (GC) is an extremely heterogeneous malignancy with a complex tumor microenvironment (TME) that contributes to unsatisfactory prognosis.

Methods: The overall activity score for assessing the immune activity of GC patients was developed based on cancer immune cycle activity index in the Tracking Tumor Immunophenotype (TIP). Genes potentially affected by the overall activity score were screened using weighted gene co-expression network analysis (WGCNA).

PDLIM1 interacts with HK2 to promote gastric cancer progression through enhancing the Warburg effect via Wnt/β-catenin signaling.

PDZ and LIM domain protein 1 (PDLIM1) is a cytoskeletal protein and is associated with the malignant pathological features of several tumors. However, the prognostic value of PDLIM1 and the molecular mechanisms by which it is involved in the metabolism and progression in gastric cancer (GC) are still unclear. The GEPIA database was used to predict the expression and prognosis of PDLIM1 in GC.

circHIPK2 Has a Potentially Important Clinical Significance in Colorectal Cancer Progression via HSP90 Ubiquitination by miR485-5p.

Colon cancer, as one of the common malignant tumors, has the highest morbidity and mortality. We investigated the clinical significance and possible mechanism of the circular RNA circHIPK2 in the progression of colorectal cancer (CRC). Quantitative analysis of mRNAs, gene microarray hybridization, immunofluorescence, luciferase reporter assay, proliferation assay, EDU staining, subcellular location analysis and Western blotting.

The characteristics and clinical relevance of tumor fusion burden in head and neck squamous cell carcinoma.

Background: Recent studies suggest that tumor fusion burden (TFB) is a hallmark of immune infiltration in prostate cancer, the correlation of TFB with immune microenvironment, and genomic patterns in head and neck squamous cell carcinomas (HNSC) remain largely unclear.

Methods: Gene fusion, genomic, transcriptomic, and clinical data of HNSC patients from the cancer genome atlas (TCGA) database were collected to analyze the correlation of TFB with mutation patterns, tumor immune microenvironment, and survival time in HNSC patients.

Results: Human papillomavirus (HPV) (-) patients with low TFB exhibited significantly enhanced CD8+ T cells infiltration and cytolysis activity and increased level of interferon-gamma (IL-γ), human leukocyte antigen (HLA) class I, and chemokines.

PERK activation by CCT020312 chemosensitizes colorectal cancer through inducing apoptosis regulated by ER stress.

Endoplasmic reticulum (ER) stress is a significant mechanism for chemoresistance to colorectal cancer (CRC) treatment. The RNA-like endoplasmic reticulum kinase (PERK) is critical for ER stress induction. In the present study, we attempted to explore whether PERK activator CCT020312 (CCT) could be effective for CRC treatment, and reveal the underlying mechanisms.

Efficacy of Olanzapine-Triple Antiemetic Regimen in Patients with Gastrointestinal Tumor and High Risk of Chemotherapy-Induced Nausea and Vomiting Receiving Moderately Emetogenic Chemotherapy: A Retrospective Study.

Purpose: Dexamethasone combined with 5-hydroxytryptamine type 3 receptor antagonists (5-HT3 RA) dual regimen is the standard prophylaxis regimen for patients receiving moderately emetogenic chemotherapy (MEC). However, it has been found in real-world practice that chemotherapy-induced nausea and vomiting (CINV) remains poorly controlled among patients with gastrointestinal tumor, especially in those with high-risk factors for vomiting, such as female, young, and non-alcoholic individuals. Hence, we aimed to evaluate the efficacy of an olanzapine-containing triple regimen in this clinical setting.

Implications of the Receptor Tyrosine Kinase Axl in Gastric Cancer Progression.

Background: Gastric cancer (GC) is an aggressive malignancy with high lethality. Systematic chemotherapy is the main therapeutic strategy for advanced GC patients. The overexpression of Axl is associated with poor prognosis and regulates tumor growth and metastasis in many types of cancer.

Trastuzumab with FLOT Regimen for the Perioperative Treatment of Resectable HER2 + Advanced Gastric Cancer: A Retrospective Study.

Background: The aim of this study was to evaluate the efficacy and safety of trastuzumab, combined with the FLOT regimen, in the perioperative treatment of resectable HER-2-positive advanced gastric cancer.

Methods: Overall, 45 patients were divided into two groups; 29 patients in the experimental group were treated with trastuzumab combined with FLOT and 16 patients in the control group were treated with FLOT alone. The primary endpoint was objective response rate (ORR), and the secondary endpoints were disease control rate (DCR), tumor regression grade (TRG), surgical margin, side effects, and overall survival.

Enumeration And Characterization Of Circulating Tumor Cells And Its Application In Advanced Gastric Cancer.

Background: Advanced gastric cancer (aGC) has a high global incidence and a high mortality rate and because of its high malignancy and heterogeneity, the existing methods for prognosis are limited, and a new treatment model is necessary. Circulating tumor cells (CTCs) could be considered as a "liquid biopsy" for tumor diagnosis and for monitoring treatment responses and predicting clinical outcome. Clinical studies support the efficacy of programmed cell death 1 (PD-1) immunotherapy in a subset of aGC.

MACC1 regulates PDL1 expression and tumor immunity through the c-Met/AKT/mTOR pathway in gastric cancer cells.

Background: Immunotherapy and its mechanisms are being studied in a wide variety of cancers. Programmed cell death ligand 1 (PDL1) is associated with immune evasion in numerous tumor types. Here, we aimed to assess the relationship between metastasis associated in colon cancer-1 (MACC1) and PDL1 and examine their effects on gastric cancer (GC) tumor immunity.