Background: Cancer stem cells (CSCs) are pivotal in tumor resistance to chemotherapy and gastric cancer's rapid proliferation and metastasis. We aimed to explore the CSCs-related genes in gastric cancer epithelial cells.
Methods: The mRNA expression profile and single-cell sequencing data of gastric cancer were downloaded from the public database.
Cancer of unknown primary (CUP) site poses diagnostic challenges due to its elusive nature. Many cases of CUP manifest as pleural and peritoneal serous effusions. Leveraging cytological images from 57,220 cases at four tertiary hospitals, we developed a deep-learning method for tumor origin differentiation using cytological histology (TORCH) that can identify malignancy and predict tumor origin in both hydrothorax and ascites.
View Article and Find Full Text PDFWorld J Gastroenterol
February 2024
Background: Esophageal squamous cell carcinoma (ESCC) is a deadly malignancy with limited treatment options. Deubiquitinases (DUBs) have been confirmed to play a crucial role in the development of malignant tumors. JOSD2 is a DUB involved in controlling protein deubiquitination and influencing critical cellular processes in cancer.
View Article and Find Full Text PDFWorld J Gastrointest Oncol
February 2024
Background: Cyclin-dependent kinase 9 (CDK9) expression and autophagy in colorectal cancer (CRC) tissues has not been widely studied. CDK9, a key regulator of transcription, may influence the occurrence and progression of CRC. The expression of autophagy-related genes and drug resistance factor may also play a role in CRC.
View Article and Find Full Text PDFBackground: Single-cell technology enables a deep study on the mechanism of cancers. This work delineated the function of ligand-receptor interaction in colon adenocarcinoma (COAD), and developed a LR pairs-based prognostic model.
Methods: For identifying important LR pairs, Single-cell RNA sequencing data of COAD was included.
Medicina (Kaunas)
December 2022
Background and Objectives: An increasing number of studies have shown the influence of primary tumor location of colon cancer on prognosis, but the prognostic difference between colon cancers at different locations remains controversial. After comparing the prognostic differences between left-sided and right-sided colon cancer, the study subdivided left-sided and right-sided colon cancer into three parts, respectively, and explored which parts had the most significant prognostic differences, with the aim to further analyze the prognostic significance of primary locations of colon cancer. Materials and Methods: Clinicopathological data of patients with colon cancer who underwent radical surgery from the Surveillance, Epidemiology, and End Results Program database were analyzed.
View Article and Find Full Text PDFThis study was designed and conducted to clarify the impact of RNF128 expression on malignant biological behaviors of colorectal cancer (CRC) cells and the underlying mechanism. The expression of RNF128 in CRC tissues was analyzed using mRNA sequencing data of TCGA database and was validated by Western blot assay. The experimental studies on biological functions of RNF128 in vitro were conducted to assess its impact on the proliferation, apoptosis, and metastasis of CRC cells.
View Article and Find Full Text PDFBackground: The characteristics of patients with colorectal cancer who have benign mesenteric lymph node enlargement are not well documented.
Objective: The aim of this study is to assess the clinical and prognostic significance of benign mesenteric lymph node enlargement in patients with colorectal cancer.
Design: This is a prospective cohort study.
Background And Aims: Computed tomography (CT) scan is frequently used to detect hepatocellular carcinoma (HCC) in routine clinical practice. The aim of this study is to develop a deep-learning AI system to improve the diagnostic accuracy of HCC by analysing liver CT imaging data.
Methods: We developed a deep-learning AI system by training on CT images from 7512 patients at Henan Provincial Peoples' Hospital.
The γδ T cell is a promising candidate cell in tumor immunotherapy. However, γδ T cells polarize to CD39+γδ Tregs upon colorectal cancer (CRC) induction, and the underlying mechanism remains unclear. Here, we show that the frequency of CD39+γδ Tregs, which positively correlated with poor prognosis, was significantly higher in right-sided CRC (RSCRC) than in the left-sided CRC (LSCRC).
View Article and Find Full Text PDFMicroRNAs (miRNAs) are involved in the progression of many cancers through largely unelucidated mechanisms. The results of our present study identified a gene cluster, miR-221/222, that is constitutively upregulated in serum exosome samples of patients with colorectal carcinoma (CRC) with liver metastasis (LM); this upregulation predicts a poor overall survival rate. Using an in vitro cell coculture model, we demonstrated that CRC exosomes harboring miR-221/222 activate liver hepatocyte growth factor (HGF) by suppressing SPINT1 expression.
View Article and Find Full Text PDFBackground: Colorectal cancer (CRC) is a malignant tumor that seriously threatens human health. A CRC predictive model can be used as an effective method to provide an appropriate treatment for CRC patients.
Methods: A total of 34 CRC patients were enrolled in this study.
J Gastrointest Oncol
February 2021
Background: Colorectal cancer (CRC) is one of the most common cancers. The aim of our study was to explore its related mutations, identify novel mutation markers, and construct predictive models for postoperative CRC patients, so as to provide evidence for the diagnosis, treatment, and prognosis of CRC.
Methods: A total 50 CRC patients were collected, and the mutations in tissue samples were detected through next-generation sequencing (NGS).
Background: The aim of the present study was to construct a nomogram model of high-risk stage III/IV colorectal cancer (CRC).
Methods: Gene mutation and clinical information of 251 CRC patients were downloaded from The Cancer Genome Atlas (TCGA). Targeted next-generation sequencing was performed on 44 patients to screen shared mutation genes with frequency >5% between TCGA and clinical cohorts.
Background: Robotic colorectal cancer surgery is widely accepted and applied. However, there is still no objective and comprehensive assessment on the data of nationwide multicenter series.
Method: A total of 28 medical centers in Mainland China participated in this nationwide retrospective observational study.
Long non-coding RNA (lncRNA) has been reported could regulate initiation and progression of colon adenocarcinoma (COAD) tumorigenesis in recent years. Small nucleolar RNA host gene 17 (SNHG17) was found play crucial roles in cancer progression but its role in COAD remains unclear. In this work, qRT-PCR was performed to detect SNHG17 expression level in COAD cell lines.
View Article and Find Full Text PDFColonoscopy is commonly used to screen for colorectal cancer (CRC). We develop a deep learning model called CRCNet for optical diagnosis of CRC by training on 464,105 images from 12,179 patients and test its performance on 2263 patients from three independent datasets. At the patient-level, CRCNet achieves an area under the precision-recall curve (AUPRC) of 0.
View Article and Find Full Text PDFBackground: Calponin is an actin filament-associated regulatory protein originally identified in smooth muscle cells. Three homologous have been identified in vertebrate species, but little functional characterization of potential activities in cancer has been performed. In this study, we determined the levels of CNN2 in colon cancer cell lines and determined the effects of this protein by increasing expression.
View Article and Find Full Text PDFProgrammed death 1 (PD-1)-targeted therapy has benefited patients with microsatellite instability-high metastatic colorectal cancer (mCRC). However, the efficacy of PD-1-targeted therapy is poor in patients with microsatellite-stable (MSS) mCRC. Therefore, it is imperative to explore additional co-inhibitory molecular signalling pathways to improve the efficacy of immunotherapy in MSS mCRC treatment.
View Article and Find Full Text PDFRNA‑binding proteins (RBPs) play a fundamental role in the recurrence and metastasis of colorectal cancer (CRC). In this study, we identified muscleblind‑like 1 (MBNL1), an RBP implicated in developmental control, as a robust suppressor of CRC cell metastasis in vitro. By using a scratch assay coupled with time‑lapse live cell imaging, our findings revealed that the knockdown of MBNL1 induced epithelial‑to‑mesenchymal transition (EMT)‑like morphological changes in the HCT‑116 cells, accompanied by an enhanced cell motility, and by the downregulation of E‑cadherin and the upregulation of Snail expression.
View Article and Find Full Text PDFCell Physiol Biochem
January 2019
Background/aims: Colorectal cancer (CRC) is the third most commonly diagnosed malignancy and the second leading cause of cancer-related deaths worldwide. Thus, methods for early diagnosis of CRC are urgently needed. We aimed to identify potential long non-coding RNAs (lncRNAs) in circulatory exosomes that may serve as biomarkers for the detection of early-stage CRC.
View Article and Find Full Text PDFBackground: So far there have been limited studies about the risk factors for benign small bowel obstruction (SBO) after colorectal cancer surgery. This study aimed to determine the factors affecting the development of benign SBO following curative resection in patients with rectal cancer.
Methods: Patients (3472) receiving curative resection of rectal cancer at the Department of Colorectal Cancer, Tianjin Medical University Cancer Institute and Hospital, between January 2003 and December 2012 were retrospectively studied.