β-eudesmol inhibits cell growth and enhances cell chemosensitivity of NPC through targeting FGF1/FGFR signaling.

Background: Chemoresistance is one ofthe main challenges for advanced NPCtreatment.We previouslyproved LHX2 transcriptionally regulates FGF1 and promotes cancer progression through activating FGF1/FGFR axis,which prompted us toexplore the potential inhibitors for FGFR to improve the therapy response.

Methods: RT-qPCR, immunohistochemistry, western blot assayand immunofluorescencewere applied to verify the gene expression levels.

Knockdown of LAMA3 enhances the sensitivity of colon cancer to oxaliplatin by regulating the Hippo-YAP pathway.

Background: Oxaliplatin is the first-line chemotherapy for patients with colon cancer (CC). However, its resistance limits its therapeutic efficacy.

Methods: Oxaliplatin resistance-associated differentially expressed genes (DEGs) in the GSE42387 and GSE227315 datasets were identified through bioinformatics methods.

FBXO7 Confers Mesenchymal Properties and Chemoresistance in Glioblastoma by Controlling Rbfox2-Mediated Alternative Splicing.

Mesenchymal glioblastoma (GBM) is highly resistant to radio-and chemotherapy and correlates with worse survival outcomes in GBM patients; however, the underlying mechanism determining the mesenchymal phenotype remains largely unclear. Herein, it is revealed that FBXO7, a substrate-recognition component of the SCF complex implicated in the pathogenesis of Parkinson's disease, confers mesenchymal properties and chemoresistance in GBM by controlling Rbfox2-mediated alternative splicing. Specifically, FBXO7 ubiquitinates Rbfox2 Lys249 through K63-linked ubiquitin chains upon arginine dimethylation at Arg341 and Arg441 by PRMT5, leading to Rbfox2 stabilization.

Activation of the IL-17 signalling pathway by the CXCL17-GPR35 axis affects drug resistance and colorectal cancer tumorigenesis.

Colorectal cancer (CRC) is one of the most commonly diagnosed cancers, and drug resistance following prolonged treatment leads to downregulation of the efficacy of chemotherapy against CRC. CXCL17 is an inflammatory factor that plays a crucial role in tumorigenesis. However, the function of the CXCL17-GPR35 axis in CRC and resistance to chemotherapy is not entirely clear.

Cancer-Associated Fibroblasts Promote Radioresistance of Breast Cancer Cells via the HGF/c-Met Signaling Pathway.

Purpose: Cancer-associated fibroblasts (CAFs) are an integral part of the tumor microenvironment (TME), which is involved in therapy resistance. This study aimed to investigate the role of CAFs in radiosensitivity of breast cancer cells.

Methods And Materials: The CAFs were isolated from the breast cancer tissues, and the conditioned medium was collected to culture breast cancer cells.

A novel necroptosis-related gene index for predicting prognosis and a cold tumor immune microenvironment in stomach adenocarcinoma.

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.

Impact of Smoking on Response to the First-Line Treatment of Advanced ALK-Positive Non-Small Cell Lung Cancer: A Bayesian Network Meta-Analysis.

The impact of smoking on the efficacy of anaplastic lymphoma kinase (ALK)-positive non-small cell lung cancer (NSCLC) treatment is controversial and has not been systematically explored in the first-line setting. We performed a systematic review based on a pairwise meta-analysis and a Bayesian network meta-analysis (NMA) to address this issue. PubMed, Embase, Web of Science, Cochrane Library, Clinical-Trials.

2D-3D cascade network for glioma segmentation in multisequence MRI images using multiscale information.

Background And Objective: Glioma segmentation is an important procedure for the treatment plan and follow-up evaluation of patients with glioma. UNet-based networks are widely used in medical image segmentation tasks and have achieved state-of-the-art performance. However, context information along the third dimension is ignored in 2D convolutions, whereas difference between z-axis and in-plane resolutions is large in 3D convolutions.

A Ferroptosis-Related lncRNA Model to Enhance the Predicted Value of Cervical Cancer.

Background: Cervical cancer (CC) is a common gynecological malignant tumor. Ferroptosis is a new type of programmed cell death, which plays a crucial part in cancer. However, current knowledge regarding ferroptosis-related long noncoding RNAs (lncRNAs) in CC is still limited.

ESRP1 regulates alternative splicing of CARM1 to sensitize small cell lung cancer cells to chemotherapy by inhibiting TGF-β/Smad signaling.

Epithelial splicing regulatory protein 1 (ESRP1) is an RNA-binding protein that regulates alternative splicing of mRNA. ESRP1 plays an important role in chemoresistance of various cancers, including breast cancer, colon cancer and non-small cell lung cancer. However, the role of ESRP1 and its mechanism in small cell lung cancer (SCLC) chemoresistance remains unclear.

Circulating Tumor Cells Counting Act as a Potential Prognostic Factor in Cervical Cancer.

Background: Circulating tumor cells (CTCs) hold huge potential for both clinical applications and basic research into the management of cancer, but the relationship between CTC count and cervical cancer prognosis remains unclear. Therefore, research on this topic is urgently required.

Objective: This study investigated whether CTCs were detectable in patients with cervical cancer and whether CTC count was an indicator of prognosis.

PITPNC1 fuels radioresistance of rectal cancer by inhibiting reactive oxygen species production.

Background: Neoadjuvant radiotherapy is a commonly used method for the current standard-of-care for most patients with rectal cancer, when the effects of radioresistance are limited. The phosphatidylinositol transfer protein, cytoplasmic 1 (PITPNC1), a lipid-metabolism-related gene, has previously been proved to manifest pro-cancer effects in multiple types of cancer. However, whether PITPNC1 plays a role for developing radioresistance in rectal cancer patients is still unknown.

Differentiation of Recurrence from Radiation Necrosis in Gliomas Based on the Radiomics of Combinational Features and Multimodality MRI Images.

Purpose: To classify radiation necrosis versus recurrence in glioma patients using a radiomics model based on combinational features and multimodality MRI images.

Methods: Fifty-one glioma patients who underwent radiation treatments after surgery were enrolled in this study. Sixteen patients revealed radiation necrosis while 35 patients showed tumor recurrence during the follow-up period.

Timeless-Stimulated miR-5188-FOXO1/β-Catenin-c-Jun Feedback Loop Promotes Stemness via Ubiquitination of β-Catenin in Breast Cancer.

MicroRNAs (miRNAs) play an essential role in the self-renewal of breast cancer stem cells (BCCs). Our study aimed to clarify the role of proto-oncogene c-Jun-regulated miR-5188 in breast cancer progression and its association with Timeless-mediated cancer stemness. In the present study, we showed that miR-5188 exerted an oncogenic effect by inducing breast cancer stemness, proliferation, metastasis, and chemoresistance in vitro and in vivo.

Long noncoding RNA LINC02582 acts downstream of miR-200c to promote radioresistance through CHK1 in breast cancer cells.

Radiotherapy is essential to treat breast cancer and microRNA (miRNA) miR-200c is considered as a radiosensitizer of breast cancer. However, the molecular mechanisms by which miR-200c regulates radiosensitivity remain largely unknown. In the present study, we showed that induction of miR-200c led to widespread alteration in long noncoding RNA (lncRNA) expression in breast cancer cells.

Elevated Levels of TNF-α and Decreased Levels of CD68-Positive Macrophages in Primary Tumor Tissues Are Unfavorable for the Survival of Patients With Nasopharyngeal Carcinoma.

Due to the critical role of inflammation in nasopharyngeal carcinoma, we aim to investigate the correlation between nasopharyngeal carcinoma prognosis and the levels of tumor necrosis factor α and macrophages for the development of new prognostic models. The levels of tumor necrosis factor-α and CD68-positive macrophages were measured in 111 primary nasopharyngeal carcinoma specimens by immunohistochemistry. Kaplan-Meier analysis showed that, compared with nonelevated tumor necrosis factor-α levels, elevated tumor necrosis factor α levels were correlated with poorer 10-year distant metastasis-free survival (24.

Fatty liver is a risk factor for liver metastasis in Chinese patients with non-small cell lung cancer.

Background: The hepatic microenvironment, which may include chronic inflammation and fibrosis, is considered to contribute to the development of liver metastases. Hepatic steatosis (HS) might cause liver inflammation and fibrosis. However, to date, no studies have investigated the impact of HS on liver metastasis in patients with non-small cell lung cancer (NSCLC).

Selective Radiotherapy after Distant Metastasis of Nasopharyngeal Carcinoma Treated with Dose-Dense Cisplatin plus Fluorouracil.

Purpose: To investigate the efficacy and safety of selective radiotherapy after distant metastasis of nasopharyngeal carcinoma (NPC) treated with dose-dense cisplatin plus fluorouracil.

Materials And Methods: Eligible patients were randomly assigned to a study group treated with dose-dense cisplatin plus fluorouracil following selective radiotherapy and a control group receiving traditional cisplatin plus fluorouracil following selective radiotherapy according to a 1:1 distribution using a digital random table method. The primary endpoint was overall survival (OS).

A systems biology approach to study the biology characteristics of esophageal squamous cell carcinoma by integrating microRNA and messenger RNA expression profiling.

Esophageal squamous cell carcinoma (ESCC) is one of the most malignant tumors. The aim of this study was to investigate the biology characteristics of ESCC by analyzing microRNA and mRNA expression profile. We used BRB-array tools to analyze the deregulated microRNA and mRNA between esophageal squamous cell carcinomas and paired normal adjacent tissues.

Data mining and bioinformatics of the expression data of esophageal squamous cell carcinoma.

The aim is to explore the molecular regulation mechanism of the pathogenesis of the esophageal squamous cell carcinoma. The expression data of esophageal squamous cell carcinoma were obtained from the GEO database. The differential expression genes were identified by the BRB-array tools and the pathway was analyzed by DAVID online tools.

[Effects of short hairpin RNA targeting epidermal growth factor receptor on the radiosensitivity of human nasopharyngeal carcinoma xenografts in nude mice].

Objective: To investigate the effect of the vector carrying short hairpin RNA targeting epidermal growth factor receptor (shRNA-EGFR) on the radiosensitivity of human nasopharyngeal carcinoma xenografts in nude mice.

Methods: shRNA-EGFR was transfected into human nasopharyngeal carcinoma cell line CNE1 via Lipofectamine 2000. The transfected cells were collected for quantitative RT-PCR detection of the expression level of EGFR mRNA.

[Radiosensitivity changes of nasopharyngeal carcinoma cells with different levels of differentiation after treatment with chemotherapeutic agents].

Objective: To examine the changes of radiosensitivity of CNE1, a well differentiated squamous cell line of nasopharyngeal carcinoma (NPC), and CNE2, a poorly differentiated squamous cell line of NPC, after treatment with chemotherapeutic agents.

Methods: CNE1 and CNE2 cells with and without treated by adriamycin (ADM) were irradiated by X-ray and the radiosensitivity changes of ADM-treated cells were analyzed according to the cell survival curve generated by colony formation assay.

Result And Conclusion: Radiosensitivity of CNE1 cells increased after ADM treatment, but that of CNE2 cells decreased, suggesting that different treatment regimens should be planned for advanced squamous cell NPC of different pathological types.

[Expression of multidrug resistance gene in nasopharyngeal carcinoma cells after irradiation exposure].

Objective: To examine the changes in the function and expression of multidrug resistance gene (mdr1) and P-gly-coprotein (P-gp) in nasopharyngeal carcinoma (NPC) CNE1 cell following irradiation for determining the sequential order of radiotherapy and chemotherapy in the treatment of NPC.

Methods: The expressions of mdr1 gene and its protein P-gp as well as the function of P-gp efflux were examined in CNE1 cells before and after irradiation exposure by reverse transcriptional polymerase chain reaction (RT-PCR), Western blotting and flow cytometry, respectively.

Results: Irradiation of CNE1 cells induced a long-term overexpression of mdr1 gene and P-gp and reduction in intracellular daunorubicin accumulation.