Articles tagged with Drug Resistance
Researchers uncover Achilles' heel of TMZ chemotherapy resistance, revealing critical insights into mechanisms behind glioblastoma's inactivation of DNA repair pathways. The study sheds light on potential mechanisms of aging and offers new avenues for developing more effective therapies against this devastating cancer.
Recent studies suggest HBV infection is associated with liver cancer stem cells, but the exact mechanisms are unclear. This study investigates the role of HBV infection in regulating the stemness of HCCs and its link to drug resistance.
Researchers are working to develop a curative treatment for multiple myeloma by combining treatments, overcoming resistance, and tailoring therapy to individual patients. The study found promising results using bispecific antibodies in combination with other treatments.
Breast cancer cells can live for years in bone marrow after remission, leading to disease recurrence in approximately 40% of patients. A study found that mesenchymal stem cells support the cancer cells by donating essential proteins, making them more aggressive and drug-resistant.
Researchers explore adapting agricultural techniques, such as integrated pest management, to treat cancer. By managing cancer as a chronic condition, adaptive therapy aims to overcome treatment resistance and improve patient outcomes.
A study published in JAMA found evidence of partial resistance to artemisinin derivatives in young children with severe malaria, raising questions about the need for new treatments. The study also showed that 10% of children returned within 28 days with an infection from the same strain they had during their original admission.
A new study from Uganda documents partial resistance to artemisinin in 11 out of 100 African children with severe malaria, suggesting a growing concern for the efficacy of lifesaving malaria treatments. The study also reveals that 10 patients who were thought to have been cured suffered repeat malaria attacks within 28 days.
Researchers identified a genetic weakness in drug-resistant Mycobacterium tuberculosis, allowing them to develop targeted drugs. This technology has the potential to combat other drug-resistant pathogens and prevent their spread.
Researchers have discovered a new strategy to overcome docetaxel resistance in advanced prostate cancer patients, which may improve the efficacy of chemotherapy and prolong overall survival. The approach involves inhibiting cholesterol and lipid biosynthesis, reinducing sensitivity to the drug docetaxel.
The winners of the Applied Microbiology International Horizon Awards 2024 have been named, including the One Health Microbiome Center at Penn State and researchers Dr. François Thomas and Dr. Helen Onyeaka.
Researchers at Tel Aviv University found that a special protocol of hyperbaric oxygen therapy can improve the condition of PTSD sufferers, reducing typical symptoms such as flashbacks, hypervigilance, and irritability. The study showed improvements in brain connectivity and clinical symptoms, offering new hope for millions of PTSD suff...
Researchers developed a 36-gene predictive score that surpasses conventional methods in predicting tamoxifen treatment resistance. The polygenic score UAB36 has potential as a tool for personalized medicine, helping identify patients at higher risk of poor survival and suggesting alternative treatment strategies.
Researchers at Houston Methodist have identified a new strain of bacteria, Streptococcus dysgalactiae subspecies equisimilis (SDSE), linked to increasingly severe human infections. The study used integrative analysis to investigate the genome, transcriptome, and virulence of SDSE strains, shedding light on their molecular pathogenesis.
Researchers have discovered key mutations in certain cancer cells that render WRN inhibitors ineffective. The study found that prolonged exposure to these inhibitors can lead to the acquisition of mutations in the WRN gene, allowing cancer cells to survive and develop resistance.
Polyploidy, a state with extra genetic material, allows cancer cells to survive longer under DNA damage. This phenomenon explains why some cancers are resistant to anti-cancer drug treatments.
A new study has identified four categories of cancer mutations that cause drug resistance, providing targets for drug development and potential effective second-line therapies. The research highlights DNA changes that could be explored further to treat patients with specific genetic mutations.
A study by Ohio State University researchers found that combining pimozide with CB-839 can effectively suppress glioblastoma growth by blocking lipid production and starvation of tumor cells. This innovative combination may also hold promise for treating other cancers relying on glutamine and lipids.
Treatment-emergent nirmatrelvir resistance mutations were commonly detected in immunosuppressed individuals, but at low frequencies and transient nature. The study suggests a low risk for the spread of nirmatrelvir resistance in the community with current variants and drug usage patterns.
Dr. Roger Lo has been awarded a $2 million NIH grant to investigate ways to prevent drug resistance in melanoma treatment and improve the effectiveness of MAPK inhibitors. The team aims to target genetic instability and immune evasion to stabilize the melanoma genome and make it more vulnerable to immune attacks.
Researchers from Osaka University used machine learning to assess the shapes, sizes, and other physical features of bacteria based on microscope images. The results showed that antibiotic-resistant strains were fatter or shorter than their parental strains, especially those resistant to quinolone and β-lactams.
Researchers isolated drug-resistant strains of SARS-CoV-2 from immunocompromised individuals who received antiviral treatments. The virus variants showed resistance to Paxlovid and remdesivir, highlighting the need for combination therapy to treat COVID-19 in highly vulnerable patients.
The University of Oklahoma Health Sciences has received a $5.3 million National Institutes of Health grant to support advanced cancer research in Oklahoma. The grant will help early-career researchers establish independently funded laboratories and build technology infrastructure specific to cancer investigations.
A new study found that antibiotic use in aged care leads to antibiotic-resistant bacteria in the gut, posing a significant risk to vulnerable residents. Researchers analysed stool samples from 164 residents and discovered nearly all carried resistant genes without symptoms.
A new study sheds light on how the herpes simplex virus becomes resistant to treatment by altering the conformation of its protein responsible for replication. The findings reveal that protein mutations linked to drug resistance arise far from the drug's target location, offering a potential strategy for overcoming resistance.
Researchers developed a new 'pan-pathogen' deep sequencing approach to capture multiple bacterial strains simultaneously. This method enables faster and more comprehensive tracking of antibiotic-resistant bacteria, potentially preventing and managing common hospital infections quicker.
Researchers from University of Maryland discovered RNA mechanisms that can lead to more effective and durable RNA-based drug treatments for conditions like high cholesterol, liver diseases, and cancers. The study highlighted the need to consider drug resistance when developing these treatments.
Researchers found a Leishmania amazonensis strain resistant to amphotericin B, a widely used treatment for cutaneous leishmaniasis. The study highlights the urgent need for alternative drugs to combat the disease, which affects over 15,000 people in Brazil annually.
A study found that increased expression of human carcinoembryonic antigen cell adhesion molecule 1 (CEACAM1) on immune cells is associated with treatment-resistant melanoma. CEACAM1 is now considered a potential therapeutic target for patients with resistant tumors.
A new editorial published in Aging suggests that starting targeted cancer therapies with high concentrations may slow down the selection for resistance. This approach could potentially be used as a preemptive measure to minimize the development of resistance.
Scientists at St. Jude Children's Research Hospital identified age-related differences in B-ALL treatment outcomes, with children being more sensitive to certain drugs. The study suggests that both age and individual genomics must be considered to predict treatment response, leading to the need for tailored treatment strategies.
Researchers designed a molecule, MTX-531, that impairs signaling drivers of cancer therapy resistance. In mouse models, MTX-531 led to tumor regressions in multiple head and neck cancers, showing a favorable toxicity profile.
Researchers developed a new antimalarial agent, DIF-1(+3), effective against drug-resistant Plasmodium falciparum. The compound showed stronger growth inhibitory effects than previous derivatives and significantly increased survival time in infected mice, suggesting it may offer more treatment options for malaria-endemic areas.
Researchers found that epalrestat increased sensitivity of non-small cell lung cancer tumors to chemotherapy, making it more effective. The study used patient-derived tumor organoids and found that overexpression of AKR1B10 was linked to drug resistance.
A study found that providing resistance tests for HIV patients has no significant impact on treatment outcomes. Instead, daily medication adherence is key to improving treatment success. The researchers suggest prioritizing resources for programs focusing on children and adolescents' specific needs.
Researchers at Case Western Reserve University discovered that ecological interactions between resistant cells and their ancestors play a pivotal role in reducing the costs of resistance. This finding has significant implications for understanding cancer evolution and developing innovative treatment strategies.
A team of Penn State researchers has created a modular genetic circuit that turns cancer cells into a 'Trojan horse,' causing them to self-destruct and kill nearby drug-resistant cancer cells. The circuit outsmarts resistance and eliminates it before the cancer cells can evolve.
A new study suggests taxing certain antibiotics could help manage the threat of antibiotic resistance in humans. By making narrow-spectrum drugs cheaper and broad-spectrum ones more expensive, GPs may be incentivized to prescribe narrower options.
A new study introduces an adaptive therapy approach that could optimize PARP inhibitor maintenance therapy, offering a more personalized and potentially less toxic treatment option for patients. The research found that dose modulation based on tumor response was superior to skipping doses.
Scientists have developed a new method to detect antibiotics in finger sweat, showing high accuracy for tuberculosis treatment monitoring. The technique allows for less invasive testing, making it easier to monitor treatment and preventing drug-resistant TB.
Researchers at Purdue University have developed a patent-pending compound called HSN748 to treat drug-resistant acute myeloid leukemia (AML). The compound has been validated in tests with IU School of Medicine and demonstrated 100% survivability after 120 days. AML is a cancer that begins in bone marrow and can be difficult to treat du...
Lopatkin's lab will investigate how bacterial metabolism contributes to antibiotic resistance using sophisticated tools and techniques. The research aims to identify drug-resistance mutations that arise in bacteria adapting to different antibiotics and metabolism-altering chemicals.
An interdisciplinary team at MUSC Hollings Cancer Center discovered how P. gingivalis interferes with mitophagy, allowing oral cancer tumors to become resistant to chemotherapy. The study identified the role of fimbriae in attaching to specific proteins on the mitophagic membrane, blocking the chemotherapy drug from its attachment point.
Scientists have created mirror-image cyclodextrins in the laboratory, which could make it easier to formulate and deliver complex medications. These discoveries may also lead to improved treatment of cardiovascular diseases caused by atherosclerotic plaques.
Researchers have uncovered key tumor-stroma interactions that drive drug resistance in melanoma leptomeningeal disease. The study identifies a potential therapeutic target by inhibiting SERPINA3-mediated signaling.
A new study combines bisphosphonates, commonly used for osteoporosis, with azole antifungals to treat fungal infections. The combination effectively targets dermatophytes and prevents resistance development.
Researchers discovered a previously unknown biological process through which breast tumor cells develop resistance to standard treatment. The study found that targeting the degradation of both HER2 and EGFR receptors can overcome drug resistance in HER2-positive breast cancer models.
The study highlights the importance of protease-activated receptors (PARs) in cancer growth and development, with PH-binding motifs identified as a key platform for drug design. The researchers suggest that targeting PARs could provide an alternative to current oncogenic pathways.
A study by Charité researchers found that yeast cells can compensate for aneuploidy by exchanging proteins faster. This mechanism could be used to tackle treatment-resistant tumors and fungal infections. The study identified a previously unknown compensation system based on Saccharomyces cerevisiae.
Researchers found that blocking PI3K-beta makes glioblastoma cells more sensitive to temozolomide treatment, slowing down tumor growth. The study's findings could lead to new treatments for patients with chemotherapy-resistant glioblastoma.
Research found high levels of resistance to critically important antibiotics in uncooked meat, including chicken, lamb, beef, and pork. Uncooked dog food samples also showed similar resistance patterns.
Scientists at German Cancer Research Center have discovered a combination therapy that improves treatment response and delays resistance in lung cancer cells. The therapy, which combines ALK and SRC inhibitors, blocks key protein expression changes that lead to resistance.
A study reveals that melanomas can 'break' parts of their BRAF gene through genomic deletions, creating alternative versions that resist targeted therapy. This discovery opens new avenues for developing effective treatments for patients with BRAF mutations.
Researchers at the University of Eastern Finland have identified coregulator proteins as an alternative target to prevent drug resistance in prostate cancer. By inhibiting these proteins, the growth of drug-resistant cancer cells can be inhibited, and the activity of the glucocorticoid receptor can be limited.
A study published in Psychiatry Research confirms that weight training improves symptoms of anxiety and depression in old people. The analysis of over 200 articles identified the types of training most indicated for these cases, recommending exercises done three times a week with short sets and proper structure.
Researchers developed a breakthrough test to assess the enzymatic activity of glutathione peroxidase 4 (GPX4), a pivotal regulator of ferroptosis. The assay accurately measures GPX4 activity and extends its utility beyond GPX4, allowing for precise evaluation of other enzymes involved in ferroptosis regulation.
Researchers at the University of Cincinnati Cancer Center presented abstracts on new potential drugs and targets for treating various types of cancer. A study found that a brain-permeable drug called AM-101 sensitizes brain metastatic tumors to radiation, improving survival in preclinical animal models.
A study reveals how mechanical constraints in glioblastoma tumors influence the emergence and spatial patterning of cancer stem cells. Piezo1 plays a crucial role in regulating mechanosensing and cell phenotypic switch.
Researchers from the University of Southern Denmark have identified specific groups of cells driving resistance to chemotherapy in TNBC, offering new biomarkers and alternative treatment options. The studies shed light on the mechanisms behind chemoresistance and its epigenetic control.
Scientists have extracted a powerful antibacterial peptide from African catfish skin mucus, which could help combat antibiotic-resistant bacteria. The peptide, called NACAP-II, has been shown to disrupt bacterial cell membranes at very low concentrations.
Researchers have developed an AI model called SyntheMol that can design new antibiotics against deadly bacteria like Acinetobacter baumannii. The model identified six potent antibacterial compounds with non-toxic properties, offering a potential solution to the global crisis of antibiotic resistance.