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Colorectal cancer (CRC) lacks obvious symptoms in the early stage of the disease, making it is easy to be misdiagnosed and remain undetected. Here, we explored the role of CD4
memory stem T cells (TSCM) in peripheral blood in the early screening and auxiliary diagnosis of CRC.
Patients diagnosed with a "colorectal mass" by colonoscopy, at the Dongyang People's Hospital (Zhejiang, China), between November 2020 and June 2021, were included in this prospective study. Using histopathological results as the gold standard for diagnosis, patients were divided into "CRC group" and "benign tumor group". selleckchem Healthy volunteers were recruited as "healthy controls." Ten-color flow cytometry was used to detect CD4
T cell subsets, and the results were analyzed using the Kaluza software. Carcinoembryonic antigen (CEA) and carbohydrate antigen 199 (CA199) were detected by the Roche Cobas e 602 electrochemiluminescence immunoassay analyzer.
This study involved 33 patients with CRC, 41 patients with colorectal benign tumors, and 49 healthy volunteers. The absolute value and frequency of CD4
TSCM can clearly distinguish colorectal cancer, benign tumors, and healthy controls. According to the area under the receiver operating characteristic curve (AUC), the absolute value of CD4
TSCM used to assist in the diagnosis of CRC was 0.758 (sensitivity 0.612; specificity 0.788), which is higher than the values for CEA (AUC 0.707) and CA199 (AUC 0.552). In early screening, the sensitivity of the absolute value of CD4
TSCM (sensitivity 0.612) was significantly higher than that of CEA (sensitivity 0.333) and CA199 (sensitivity 0.259).
CD4
TSCM in peripheral blood may be a promising immune index for the early screening and auxiliary diagnosis of CRC.
CD4+ TSCM in peripheral blood may be a promising immune index for the early screening and auxiliary diagnosis of CRC.Long non-coding RNA (lncRNA) PCAT6 is a member of the Prostate Cancer Associated Transcripts family of molecules. In this review, we focus on the latest studies involving PCAT6 in the diagnosis, treatment, and prognosis of malignant tumors of the digestive, respiratory, urinary, reproductive, motion, and nervous systems. PCAT6 was found to be highly expressed in gastric cancer, colon cancer, hepatocellular carcinoma, lung cancer, bladder cancer, ovarian cancer, breast cancer, cervical cancer, osteosarcoma, glioblastoma, and other tumors. PCAT6 can promote the development and progression of different types of malignant tumors through various mechanisms. Overall, these findings suggest that PCAT6 may play an increasingly vital role in the clinical assessment of these malignant tumors. It can function as an oncogene and may be used as a potential new prognostic biomarker of these tumors.
Checkpoint inhibitor-related pneumonitis (CIP) is a potentially fatal immune-related adverse event that occurs during treatment with immune checkpoint inhibitors (ICIs). However, the roles played by peripheral blood parameters in CIP development remain unclear. Here, we aimed to identify which blood biomarkers correlated with the development and prognosis of CIP in patients with lung cancer.
We conducted a retrospective analysis of 87 patients with CIP (CIP group) and 87 patients without CIP (control group). Cytokines, blood routine, lactate dehydrogenase (LDH) and albumin (ALB) were collected at baseline (before ICIs), at onset of pneumonitis (in the CIP group), and before the last dose of ICI (in the control group). We compared the baseline values and changes over time in various blood parameters between the CIP and control groups. The CIP outcomes were collected and compared according to the median values of these parameters.
Squamous carcinoma (odds ratio [OR] 3.02;
= 0.004) and ICI monotherapy (able overall survival in CIP.
Increase in IL-6, IL-10, NLR, PLR, and LDH levels or reduced ALC and ALB levels were associated with the occurrence of CIP in lung cancer patients. High IL-6 and low ALB levels at onset of CIP were related to severe grade and poor prognosis of CIP.
Increase in IL-6, IL-10, NLR, PLR, and LDH levels or reduced ALC and ALB levels were associated with the occurrence of CIP in lung cancer patients. High IL-6 and low ALB levels at onset of CIP were related to severe grade and poor prognosis of CIP.
To integrate dose-averaged linear energy transfer (LET
) into spot-scanning proton arc therapy (SPArc) optimization and to explore its feasibility and potential clinical benefits.
An open-source proton planning platform (OpenREGGUI) has been modified to incorporate LET
into optimization for both SPArc and multi-beam intensity-modulated proton therapy (IMPT) treatment planning. SPArc and multi-beam IMPT plans with different beam configurations for a prostate patient were generated to investigate the feasibility of LET
-based optimization using SPArc in terms of spatial LET
distribution and plan delivery efficiency. One liver and one brain case were studied to further evaluate the advantages of SPArc over multi-beam IMPT.
With similar dose distributions, the efficacy of spatially optimizing LET
distributions improves with increasing number of beams. Compared with multi-beam IMPT plans, SPArc plans show substantial improvement in LET
distributions while maintaining similar delivery efficiency. Specifically, for the liver case, the average LET
in the GTV was increased by 124% for the SPArc plan, and only 9.6% for the 2-beam IMPT plan compared with the 2-beam non-LET
optimized IMPT plan. In case of LET optimization for the brain case, the SPArc plan could effectively increase the average LET
in the CTV and decrease the values in the critical structures while smaller improvement was observed in 3-beam IMPT plans.
This work demonstrates the feasibility and significant advantages of using SPArc for LET
-based optimization, which could maximize the LET
distribution wherever is desired inside the target and averts the high LET
away from the adjacent critical organs-at-risk.
This work demonstrates the feasibility and significant advantages of using SPArc for LETd-based optimization, which could maximize the LETd distribution wherever is desired inside the target and averts the high LETd away from the adjacent critical organs-at-risk.Immunotherapy, especially PD-1/PD-L1 checkpoint blockade immunotherapy, has led tumor therapy into a new era. However, the vast majority of patients do not benefit from immunotherapy. One possible reason for this lack of response is that the association between tumors, immune cells and metabolic reprogramming in the tumor microenvironment affect tumor immune escape. Generally, the limited amount of metabolites in the tumor microenvironment leads to nutritional competition between tumors and immune cells. Metabolism regulates tumor cell expression of PD-L1, and the PD-1/PD-L1 immune checkpoint regulates the metabolism of tumor and T cells, which suggests that targeted tumor metabolism may have a synergistic therapeutic effect together with immunotherapy. However, the targeting of different metabolic pathways in different tumors may have different effects on tumor immune escape. Herein, we discuss the influence of glucose metabolism and glutamine metabolism on tumor immune escape and describe the theoretical basis for strategies targeting glucose or glutamine metabolism in combination with PD-1/PD-L1 checkpoint blockade immunotherapy.Targeted therapies such as Cyclin Dependent Kinase 4 and 6 (CDK 4/6) inhibitors have improved the prognosis of metastatic hormone receptor (HR) positive breast cancer by combating the resistance seen with traditional endocrine therapy. The three approved agents currently in the market are palbociclib, ribociclib and abemaciclib. Besides the overall similarities associated with CDK4/6 inhibition, there are differences between the three approved agents that may explain the differences noted in unique clinical scenarios- monotherapy, patients with brain metastases or use in the adjuvant setting. This review article will explore the preclinical and pharmacological differences between the three agents and help understand the benefits seen with these agents in certain subgroups of patients with metastatic HR positive breast cancer.
This study aims to assess the efficacy and safety of penpulimab (a humanized anti-PD-1 IgG1 antibody) with anlotinib in the first-line treatment of Chinese patients withuHCC.
In this open-label multicenter phase Ib/II trial, patients with histologically or cytologically confirmed uHCC, without previous systemic treatment, aged 18-75 years old, classified as BCLC stage B (not amenable for locoregional therapy) or C, with Child-Pugh score ≤7 and ECOG performance status ≤1 were enrolled. Patients received penpulimab [200 mg intravenous (i.v.) Q3W] and oral anlotinib (8 mg/day, 2 weeks on/1 week off). The primary endpoint was objective response rate (ORR). Secondary endpoints included safety, disease control rate (DCR), progression-free survival (PFS), time to progression (TTP), duration of response (DoR), and overall survival (OS). This trial is registered with ClinicalTrials.gov (NCT04172571).
At the data cutoff (December 30, 2020), 31 eligible patients had been enrolled and treated with a median follow-up of 14.7 months (range, 1.4-22.1). The ORR was 31.0% (95% CI, 15.3-50.8%), and the DCR was 82.8% (95% CI, 64.2-94.2%). The median PFS and TTP for 31 patients were 8.8 months (95% CI, 4.0-12.3) and 8.8 months (95% CI, 4.0-12.9) respectively. The median OS was not reached; the 12-month OS rate was 69.0% (95% CI, 48.9-82.5%). Only 19.4% (6/31) of patients had grade 3/4 treatment-related adverse events (TRAEs).
Penpulimab plus anlotinib showed promising anti-tumor activity and a favorable safety profile as first-line treatment of patients with uHCC.
Penpulimab plus anlotinib showed promising anti-tumor activity and a favorable safety profile as first-line treatment of patients with uHCC.Glycochenodeoxycholate (GCDA), a toxic component in bile salts, is involved in carcinogenesis of gastrointestinal tumors. The objective of this research was to study the function of ERK1/2 in the GCDA-mediated survival and drug-resistance in hepatocellular carcinoma cells (HCCs). Firstly, extracellular signal-regulated kinase 1/2 (ERK1/2) was detected extensively expressed in liver cancer cells, and silencing ERK1/2 by RNA interference could suppress GCDA-stimulated survival and promote apoptosis. Furthermore, phosphorylation of endogenous ERK1/2 could be potently stimulated by GCDA in combination with enhanced chemoresistance in QGY-7703 hepatocellular carcinoma cells. The GCDA-mediated proliferation and chemoresistance could be impaired by PD98059, which acted as an inhibitor to block the phosphorylation of ERK1/2. Mechanistically, PD98059 was able to potently suppress GCDA-stimulated nuclear aggregation of ERK1/2 and p-ERK1/2, upregulate pro-survival protein Mcl-1 and downregulate pro-apoptotic protein Bim. The results of this study indicated that disruption of ERK1/2 by blocking phosphorylation or nuclear translocation may put forward new methods for solving the problem of GCDA-related proliferation and drug-resistance in liver cancer treatment.
Homepage: https://www.selleckchem.com/products/cx-5461.html
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