Articles tagged with Tumor Microenvironments
A study published in Cancer Research found that constitutively activated p53 in hepatocytes of chronic liver disease patients creates a microenvironment supportive of tumor formation from hepatic progenitor cells. This novel mechanism challenges the traditional role of p53 as a cancer suppressor.
A preclinical study by Cedars-Sinai Cancer and Johns Hopkins University has discovered a novel three-step treatment that disrupts the pancreatic tumor microenvironment in laboratory mice. The treatment, which combines anti-PD-1 immunotherapy antibody, FAKi, and CXCR4, prevents cancer metastasis and bolsters the immune system.
Researchers discovered that porous cell membrane formation allows cancer-inducing proteins to escape and promote tumor growth in nonalcoholic steatohepatitis-associated liver cancer. The release of IL-33 and IL-1β from senescent hepatic stellate cells accelerates cancer development by suppressing anti-tumor immunity.
Researchers at Kyoto University identified the mechanism behind active inflammation and immunosuppression in tumor microenvironments. EP2/EP4 inhibitors suppress tumor growth by allowing regulatory T cells to infiltrate and activate within tumors, benefiting patients with certain cancers.
Researchers developed a novel nanoparticle to deliver ARL67156, an enzyme inhibitor that prevents ATP degradation into adenosine, selectively targeting solid tumors. The treatment substantially suppressed tumor growth and resulted in prolonged survival in mouse models.
A drug targeting IDH1 mutations in select cancers also inhibits wild-type form under certain conditions, making it a promising therapeutic option. Laboratory experiments and mouse models demonstrate the efficacy of Ivosidenib against various cancer types, including pancreatic, colorectal, ovarian, and lung cancer.
Researchers from China have developed a novel bioconjugate that can suppress the growth of K-Ras mutant pancreatic tumors. The conjugate, which targets folate receptors and macropinocytosis, was found to be highly cytotoxic and effective at suppressing tumor growth.
Researchers have identified new biomarkers to detect non-small cell lung cancer in its early stages through a blood test, offering improved survival chances. The approach can also identify potential drug resistance, allowing clinicians to choose alternative treatment options.
Researchers at the Beckman Institute found a direct link between high-fat diets and heightened nitric oxide levels, which can lead to increased risk of inflammation and cancer development. The study used a molecular probe to visualize changes in the tumor microenvironment.
A study by Osaka University found that fat accumulation in liver tumors can predict patient response to immunotherapy. The researchers identified a unique tumor immune microenvironment, known as steatotic HCC, which is associated with high infiltration of immune cells but exhaustion of nearby T cells.
Researchers found that targeting both tumor and lymph node microenvironments with nanomedicine improves treatment response for metastatic triple negative breast cancer. Long-term tumor remission was achieved in mice models using nanoparticles to deliver immune-modulating drugs.
Chronic bacterial infections can lead to chronic inflammation and DNA damage, increasing CRC risk. Salmonella infections are particularly risky, as they impair immune responses and promote tumorigenesis.
Researchers developed a droplet-based microfluidic technology to produce micro-organospheres from cancer patient biopsies within an hour. These miniature tumors retain the original microenvironment and can be used for testing many drug conditions, showing almost perfect correlation with actual clinical treatment outcomes.
Researchers have discovered two distinct classes of cancer-associated fibroblasts that accumulate in the pancreatic tumor microenvironment and play opposing roles. The study suggests that targeting these unique cell populations may improve treatment outcomes for pancreatic cancer patients.
Researchers developed a computational approach called CellTrek to combine parallel gene-expression profiling methods, creating spatial maps at single-cell resolution. The tool provides detailed information on individual cell types' location within tissues, enabling unique biological insights.
Researchers developed a novel scaffold to grow breast tumors with reduced immune variability, enabling more accurate immunotherapy drug testing. The new model replicates treatment-resistant breast cancer microenvironments and predicts patient responses to therapy.
A team of researchers has reprogrammed the tumor microenvironment of liver cancer by using mRNA nanoparticles, restoring the function of the p53 master regulator gene. The approach increased antitumor immune responses in hepatocellular carcinoma laboratory models and shows promise for treating HCC and other cancers.
Scientists at Technical University of Munich discovered a promising combination therapy for mesenchymal PDAC subtype, showing improved T-cell infiltration and cell cycle arrest when using nintedanib with trametinib. The treatment significantly improves the response of highly aggressive mesenchymal PDAC subtypes in mice.
Researchers found that hyaluronic acid is not only present in pancreatic tumors but also serves as a nutrient source for cancer cells. This discovery indicates potential new treatments for pancreatic cancer by targeting the sugar scavenging pathway.
Researchers at Peking University created a comprehensive single-cell landscape of tumor-infiltrating T cells across 21 cancer types, revealing heterogeneity and dynamics. This study provides an immune-typing scheme that could inform targeted therapy.
Researchers found that CBD shrinks glioblastoma tumors by reducing inflammation and restoring immune balance. The compound also suppresses key proteins involved in tumor growth and spread, making it a potential novel adjunct therapy for glioblastoma patients.
Scientists have identified the transcription factor Blimp1 as a new critical regulator of tumor-infiltrating regulatory T cells. Disrupting Blimp1 in these cells remodels the tumor microenvironment and augments the response to immunotherapy, promoting improved tumor control and anti-tumor immunity.
Researchers have developed smart transformable nanoparticles that can alter their size and shape in response to physiological conditions, improving particle circulation, biodistribution, and targeted therapy for cancer theranostics. These particles promise enhanced tumor diagnoses and treatment by adapting to the physiology of tumors.
A UCLA research team found that PD-1 blockade initially activates T cells and conventional dendritic cells in glioblastoma, but the immune microenvironment remains dominated by immunosuppressive cells. The study suggests that combining therapies targeting other checkpoint proteins and pathways may improve treatment outcomes.
Researchers found that antihistamines improve responses to immune checkpoint inhibitors in cancer patients, particularly those with pre-existing allergies or high plasma histamine levels. The study suggests targeting the histamine receptor HRH1 may be a useful treatment approach.
Researchers have developed a prostate cancer organoid that can mimic the patient-specific microenvironment, opening up new avenues for targeted treatments. The study reveals that extracellular matrix regulates EZH2 activity and efficacy of inhibitors, as well as identifies potential new therapeutic targets like DRD2.
Researchers found that high levels of immune cells in tumors correlate with better outcomes for esophageal cancer patients. The study used the Immunoscore to evaluate tumor-infiltrating lymphocytes and found a strong association between high scores and long-term survival rates.
Researchers at Johns Hopkins University have developed a non-invasive optical probe to understand the complex changes in tumors after immunotherapy. Using Raman spectroscopy and machine learning, they identified key features that indicate how tumors respond to treatment, showing promising results for predicting patient response.
The MAP Virtual Congress 2021 focuses on integrating tumour sample analysis into daily practice, enabling personalized treatment. Key findings include actionable mutations in patient DNA and the role of the tumour microenvironment in metastasis.
Researchers have created a 3D pancreatic cancer tumour model using bioengineered matrix and patient-derived cells. The model exhibits patient-specific transcriptional profiles, CSC functionality, and strong tumourigenicity, enabling better reproduction of drug responses.
Despite its promise, cancer immunotherapy faces several hurdles, including limited efficacy and variable outcomes. Researchers are exploring new therapeutic targets and combination strategies to overcome resistance and improve patient outcomes.
Researchers have found that breast cancer stem cells accumulate near a tumor arteriole, which they call the arteriolar niche. This niche promotes cancer cell features and potential development through the LPA/PKD-1 signaling pathway.
Researchers found that the drug Vismodegib altered tumor-associated macrophage metabolism, shifting them from immunosuppressive M2 macrophages to pro-inflammatory M1 macrophages. This shift led to a decrease in tumor-promoting properties and improved immune response.
Researchers discovered that hypoxia induces regional variations in gene-expression patterns in pancreatic cancer, with specific subpopulations of cancer cells surviving under hypoxic conditions. These findings suggest a link between hypoxia and aggressive tumor behavior, highlighting the need for targeted treatments.
The study found that hepatocellular carcinoma develops on a background of chronic inflammation and fibrosis, with tumor-associated macrophages playing a key role. The researchers characterized the inflammatory microenvironment in two HCC mouse models, revealing divergent phenotypes of liver macrophage subsets and their contribution to ...
This special issue of Acta Pharmaceutica Sinica B investigates the impact of tumor microenvironment on drug delivery systems for cancer treatment. Featured papers discuss various strategies to enhance specificity, target tumor-associated macrophages and manipulate immune-vascular crosstalk.
Researchers demonstrate that epithelial cells can induce phenotypic and genotypic changes in HER2-positive breast cancer cells, known as cancer cell redirection. This phenomenon restricts proliferation of tumorigenic cells and shifts gene expression profiles towards a non-tumorigenic epithelial profile.
Researchers discover that the proteins transforming growth factor-β (TGF-β) and tumor necrosis factor alpha (TNF-α) promote the development of cancer-associated fibroblasts, contributing to tumor progression. TGF-β induces endothelial-mesenchymal transition (EndMT), a process involving the conversion of endothelial cells to CAFs.
Researchers develop a combination therapy using near-infrared light-induced heat and anti-CD47 antibody to enhance cancer treatment. The treatment promotes local and systemic anticancer immune responses, showing great potential for solid tumors.
Targeted radionuclide therapy has been shown to improve the effectiveness of immunotherapies in treating prostate cancer by modifying the tumor microenvironment. The treatment can achieve immunomodulation at relatively low radiation doses without affecting the normal immune system.
Researchers developed a noninvasive method to assess the effect of cellular immunotherapies on the tumor microenvironment, which inhibits the immune response and evades cancer treatments. Nano-radiomics combines imaging technology with radiomics to analyze changes in the TME that conventional methods cannot detect.
A study by Weizmann Institute researchers found that a gene normally protecting against cancer, p53, can switch allegiance in the tumor microenvironment, supporting cancer growth. Eliminating this protein from cancer-associated fibroblasts reduced their ability to promote tumor growth and metastasis.
A study led by CNIO researchers shows that silibinin reduces brain metastasis lesions in mice and patients, targeting the tumor microenvironment. The treatment has shown encouraging results, with 75% of patients reacting positively and a 15.5-month average survival rate
Chronic lymphocytic leukemia (CLL) originates from blood-forming cells and spreads to organs through the bloodstream, suppressing immune response to survive. Researchers propose an immunotherapeutic strategy with two immune checkpoint inhibitors that block disease development in preclinical tests.
Researchers at OHSU discovered the tumor microenvironment's impact on breast cancer cell growth and response to treatment. The study found that targeting resistance factors from the microenvironment could improve clinical outcomes for patients treated with HER2-targeted drugs.
Researchers design multifunctional nano-theranostics targeting the unique acidic tumor microenvironment. These smart imaging nanoprobes enable sensitive and accurate tumor diagnosis through signal amplification under reduced pH conditions.
Researchers discovered that tumor blood vessels and the immune system interact, with immune cells promoting vessel normalization to improve anti-tumor therapies. This bidirectional regulation may lead to better cancer treatment outcomes when considering both vascular structure and immune response.
Scientists at Sanford Burnham Prebys have found that fetal muscle stem cells can remodel their microenvironment to encourage adult muscle regeneration. This discovery provides rationale for developing drugs to trigger this transition, offering new hope for treating muscular dystrophies and muscle-wasting disorders.
Researchers at the University of Illinois have developed a new technique to create synthetic tissue environments that can realistically recreate microenvironments found in biology. This allows for more accurate study of tumor growth and behavior, and has potential applications in drug screening and personalized medicine.
Researchers found that two different breast cancer models progressed at varying rates based on tumor microenvironment characteristics, with MMP9 playing a crucial role in promoting cancer growth. The study suggests that targeting MMP inhibitors may be more effective in specific patient populations.
Berkeley Lab scientists discovered that genetic makeup affects cancer risk from low-dose radiation, identifying key regions in the genome and tumor microenvironment. The findings could lead to genetic screening tests to identify people at high risk of cancer after exposure.
Hepatitis B virus (HBV) infection is associated with a complex tumor microenvironment in hepatocellular carcinoma (HCC), leading to carcinogenic progression. Targeted therapies targeting the microenvironment offer promise for treating this disease.
Researchers have identified a new therapeutic target for certain myeloproliferative diseases by targeting the microenvironment that sustains hematopoietic stem cells. The treatment involves using clinically approved medications to prevent or reverse damage to this microenvironment.
Researchers have developed a novel approach to treating CLL by disrupting the activity of the NF-kappaB pathway, which ensures survival and resistance of CLL cells. This approach may lead to re-sensitization of CLL cells to conventional chemotherapy and novel agents.
Researchers from Queen Mary University of London are using bioengineering techniques to grow the first complex 3-dimensional human tumour microenvironment in the laboratory. The goal is to understand how this 'tumour microenvironment' supports cancer growth and develop new treatments that target it.
Researchers at Thomas Jefferson University found that decorin, a naturally occurring substance, induces tumor suppressor genes in the surrounding tissue of triple negative breast cancer tumors. This breakthrough may lead to improved therapeutics for metastatic breast cancer.
Researchers found acidic pH microenvironments in tumors promote autophagy, allowing cancer cells to survive and proliferate. The study suggests a potential therapeutic strategy based on inhibiting autophagy, which could introduce novel treatment options for tumor progression.
Researchers found that transforming growth factor-β1 contributes to kidney disease by inducing fibrosis and nephron degeneration. Meanwhile, a new diagnostic criteria for T-cell lymphoma was discovered using mast cells and Th17 cells. Additionally, a novel peptide ASARM may implicate in impaired dentin mineralization in rickets.
Scientists have created unique microenvironment microarrays that reveal how adult stem and progenitor cells develop in a woman's breast. They found that the ultimate fate of these cells depends on signals from multiple microenvironments, suggesting a promising pathway for beneficial therapies.
A new computer simulation of tumor growth sets the stage for individualized cancer treatment. The model suggests that the microenvironment around tumor cells determines the tumor's ultimate cellular makeup and invasive potential.