Front Med (Lausanne)
December 2024
Traditional immunotherapies mainly focus on αβ T cell-based strategies, which depend on MHC-mediated antigen recognition. However, this approach poses significant challenges in treating recurrent tumors, as immune escape mechanisms are widespread. γδ T cells, with their ability for MHC-independent antigen presentation, offer a promising alternative that could potentially overcome limitations observed in traditional immunotherapies.
View Article and Find Full Text PDFImmune checkpoint molecules are a group of molecules expressed on the surface of immune cells that primarily regulate their immune homeostasis. Chimeric antigen receptor (CAR) T cell therapy is an immunotherapeutic technology that realizes tumor-targeted killing by constructing synthetic T cells expressing specific antigens through biotechnology. Currently, CAR-T cell therapy has achieved good efficacy in non-solid tumors, but its treatment of solid tumors has not yielded the desired results.
View Article and Find Full Text PDFMigrasomes are organelles that are similar in structure to pomegranates, up to 3 μm in diameter, and contain small vesicles with a diameter of 50-100 nm. These membranous organelles grow at the intersections or tips of retracting fibers at the back of migrating cells. The process by which cells release migrasomes and their contents outside the cell is called migracytosis.
View Article and Find Full Text PDFThe research on targeted therapy of hypopharyngeal cancer is very scarce. The discovery of new targeted driver genes will promote the progress of hypopharyngeal cancer therapy to a great extent. In our research, whole-exome sequencing in 10 patients with hypopharyngeal cancer was performed to identify single nucleotide variations (SNVs) and insertions and deletions (INDELs).
View Article and Find Full Text PDFBMC Med Inform Decis Mak
December 2022
Background: Causal inference is a crucial element within medical decision-making. There have been many methods for investigating potential causal relationships between disease and treatment options developed in recent years, which can be categorized into two main types: observational studies and experimental studies. However, due to the nature of experimental studies, financial resources, human resources, and patients' ethical considerations, researchers cannot fully control the exposure of the research participants.
View Article and Find Full Text PDFPrevious studies have shown that tumors under a hypoxic environment can induce an important hypoxia-responsive element, hypoxia-induced factor-1α (HIF-1α), which can increase tumor migration, invasion, and metastatic ability by promoting epithelial-to-mesenchymal transition (EMT) in tumor cells. Currently, with the deeper knowledge of long noncoding RNAs (lncRNAs), more and more functions of lncRNAs have been discovered. HIF-1α can regulate hypoxia-responsive lncRNAs under hypoxic conditions, and changes in the expression level of lncRNAs can regulate the production of EMT transcription factors and signaling pathway transduction, thus promoting EMT progress.
View Article and Find Full Text PDFBenign prostatic hyperplasia (BPH) is a common and frequently occurring disease in clinics, with the main manifestations including frequent micturition, urinary incontinence, dysuria, and endless urination. Transurethral resection of the prostate (TURP) is the main treatment for BPH, but some patients are prone to urinary tract infection after surgery, which affects the prognosis. Therefore, it is of great significance to study the pathogenic characteristics and risk factors of postoperative urinary-derived pathogenic bacteria infection in patients with BPH for the prevention and treatment of postoperative infection.
View Article and Find Full Text PDFBackground: The genome map of hepatocellular carcinoma (HCC) is complex. In order to explore whether circulating tumor cell DNA (ctDNA) can be used as the basis for sequencing and use ctDNA to find tumor related biomarkers, we analyzed the mutant genes of ctDNA in patients with liver cancer by sequencing.
Methods: We used next-generation targeted sequencing technology to identify mutations in patients with liver cancer.
COVID-19 is still prevalent around the globe. Although some SARS-CoV-2 vaccines have been distributed to the population, the shortcomings of vaccines and the continuous emergence of SARS-CoV-2 mutant virus strains are a cause for concern. Thus, it is vital to continue to improve vaccines and vaccine delivery methods.
View Article and Find Full Text PDFTransl Cancer Res
February 2022
Background: Distant metastasis and local recurrence remain the major reasons of treatment failure in locally advanced nasopharyngeal carcinoma (NPC). Therefore, exploring novel biomarkers for prognosis and sensitivity of radiotherapy in locally advanced NPC is crucial. This retrospective study evaluates the expression and prognostic value of aldehyde dehydrogenase 1B1 (ALDH1B1) for locally advanced NPC patients.
View Article and Find Full Text PDFPurpose: As a common head and neck tumor, laryngeal cancer has attracted heightened attention for its treatment and prognosis. Surgery and radiotherapy were mainly therapeutic approaches in laryngeal cancer, and intensity-modulated radiotherapy (IMRT) was a precision treatment way in radiotherapy. However, the therapeutic effect of surgery plus IMRT in laryngeal cancer was rarely reported.
View Article and Find Full Text PDFAbnormally alternative splicing events are common hallmark of diverse types of cancers. Splicing variants with aberrant functions play an important role in cancer development. Most importantly, a growing body of evidence has supported that alternative splicing might play a significant role in the therapeutic resistance of tumors.
View Article and Find Full Text PDFTamoxifen is a drug commonly used in the treatment of breast cancer, especially for postmenopausal patients. However, its efficacy is limited by the development of drug resistance. Downregulation of estrogen receptor alpha (ERα) is an important mechanism of tamoxifen resistance.
View Article and Find Full Text PDFLaryngeal carcinoma is one of the common malignancies of head and neck. However, the pathogenesis of laryngeal cancer has been not completely clear. To identify the effects of hypoxia on the invasion, metastasis, and metabolism of laryngeal carcinoma, iTRAQ-labeling-with-LC-MS/MS analysis was performed to identify differentially expressed proteins of the SCC10A cells under hypoxia and normoxia, while metabolites were examined by metabolic profiling.
View Article and Find Full Text PDFBackground: The purpose of this study was to investigate the expression and clinical significance of prolactin (PRL), placenta growth factor (PIGF) and nerve growth factor receptor (NGFR) in esophageal squamous cell carcinoma (ESCC).
Methods: PRL, PIGF and NGFR were selected through being screened normal human and esophageal cancer (EC) plasma by high-throughput protein chips. Subsequently, enzyme linked immunosorbent assay (ELISA) and immunohistochemistry (IHC) were used to detect the expression in ESCC and control group.
Twenty-one xanthone derivatives (XDs) were synthesized by a microwave-assisted technique. Their inhibition potency against the growth of four cancer cell lines was evaluated. XD-1 ∼ [6,9,10-trihydroxy-3,3-dimethyl-5-(2-methylbut-3-en-2-yl)-3,7-pyrano[2,3-]xanthen-7-one] was confirmed as the most active agent against HepG2 cell line growth with IC of 18.
View Article and Find Full Text PDFThe aim of the present study was to verify whether overexpression of CXC receptor 4 (CXCR4) promotes the invasion and migration of non-small cell lung cancer (NSCLC) via epidermal growth factor receptor (EGFR) and matrix metallopeptidase-9 (MMP-9), and to detect the association between CXCR4, EGFR and MMP-9. The effects of overexpression of CXCR4 on lung cancer cell functions were investigated by migration and invasion assays. Western blotting and zymograph assays were used to analyze the protein expression levels of EGFR and the production of MMP-9, respectively.
View Article and Find Full Text PDFAsthma is a complicated systemic disease of the airways, which is characterized by variable symptoms, including bronchial hyper‑responsive-ness, inflammation and airflow obstruction. The prevalence of asthma has increased 2‑3‑fold over recent decades in developed countries; however, the molecular mechanism of asthma remains unclear. In the current study, the expression of recombinant protein Dermatophagoides farinaeI (Derf I) was induced by isopropyl β‑D‑1‑thiogalactoside (IPTG) and purified using Ni‑NTA.
View Article and Find Full Text PDFThe purpose of this study is to measure the expression of microRNA-4463 and microRNA-6087 between normal persons and patients with hepatocellular carcinoma (HCC), and to clarify the meaning of them in the prognosis evaluation in HCC. Forty-five samples from healthy people and patients, who had been diagnosed with hepatocellular carcinoma before any treatment, were collected to study respectively. Real-time PCR was used to detect the expression of miRNA-4463 and miRNA-6087 in the serum of control group and hepatocellular carcinoma patients.
View Article and Find Full Text PDFHypoxia-inducible factor (HIF) is a main heterodimeric transcription factor that regulates the cellular adaptive response to hypoxia by stimulating the transcription of a series of hypoxia-inducible genes. HIF is frequently upregulated in solid tumors, and the overexpression of HIF can promote tumor progression or aggressiveness by blood vessel architecture and altering cellular metabolism. In this review, we focused on the pivotal role of HIF in tumor angiogenesis and energy metabolism.
View Article and Find Full Text PDFLaryngeal carcinoma (LC) is one of the most common malignant tumors of all head and neck squamous cell carcinomas (HNSCCs). However, the molecular mechanism and genetic basis of the development of LC have not been fully elucidated. To explore the possible mechanism, targeted proteomic analysis was performed on Bcl-2-associated proteins from LC cells.
View Article and Find Full Text PDFStudy Design: This prospective observational study included 22 patients who were diagnosed with symptomatic degenerative disc disease treated via artificial disc replacement (ADR) with a laparoscopic technique.
Objective: The current study aimed to assess the safety and efficacy of ADR using a laparoscopic technique for lumbar disc herniation.
Summary Of Background Data: Symptomatic degenerative disc disease is the major cause of low back pain with lumbar segmental instability.
The purpose of this study is to explore the role of hypoxia on the invasion and metastasis of laryngeal carcinoma. The invasion and migration ability of laryngeal cancer SCC10A cell was detected by transwell assay. Western blot was applied to analyze the expression of EMT-related proteins.
View Article and Find Full Text PDFBackground And Aims: We undertook this study to investigate the influence of PLGA-Dermatophagoides protein 1 (Der p1) vaccine on the growth of Lewis lung cancer (LLC) cells in C57/BL/6 mice.
Methods: After subcutaneous transplantation of LLC, cells were injected into the axilla of C57/BL/6 mice. Five mice received intraperitoneal (i.
The silkworm (Bombyx mori) can cause severe IgE-mediated allergic disease, however, the mechanism remains unclear. The aim of this study was to investigate the immunologic mechanism by which silkworms induce allergy. Whole silkworm pupa proteins were separated by SDS-PAGE and 2-D PAGE.
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