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E203K mutation in MAP2K1 (MEK1) causes acquired resistance to PD-1 blockade but responds to trametinib: a case report.
Chin Clin Oncol
December 2024
Colorectal Cancer Center, Sichuan University West China Hospital, Chengdu, China; Department of Medical Oncology, Cancer Center, Sichuan University West China Hospital, Chengdu, China.
Background: Epstein-Barr virus-associated gastric cancer (EBVaGC) is characterized by higher lymphocytic infiltration, which predicts sensitivity to immunotherapy. However, there are few studies investigating the mechanisms of acquired resistance to programmed cell death protein 1 (PD-1) blockade and its subsequent treatment strategies for EBVaGC.
Case Description: We describe the case of a patient with EBVaGC who was initially treated with first-line chemotherapy plus Sintilimab, a fully humanized anti-PD-1 monoclonal antibody, resulting in a near-complete response.
Evaluation of a novel malaria anti-sporozoite vaccine candidate, R21 in Matrix-M adjuvant, in the UK and Burkina Faso: two phase 1, first-in-human trials.
Lancet Microbe
December 2024
Jenner Institute, University of Oxford-NIHR Oxford Biomedical Research Centre, Oxford, UK. Electronic address:
Background: Malaria remains a substantial public health burden among young children in sub-Saharan Africa and a highly efficacious vaccine eliciting a durable immune response would be a useful tool for controlling malaria. R21 is a malaria vaccine comprising nanoparticles, formed from a circumsporozoite protein and hepatitis B surface antigen (HBsAg) fusion protein, without any unfused HBsAg, and is administered with the saponin-based Matrix-M adjuvant. This study aimed to assess the safety and immunogenicity of the malaria vaccine candidate, R21, administered with or without adjuvant Matrix-M in adults naïve to malaria infection and in healthy adults from malaria endemic areas.
View Article and Find Full Text PDFSpatiotemporal Dynamic Immunomodulation by Infection-Mimicking Gels Enhances Broad and Durable Protective Immunity Against Heterologous Viruses.
Adv Sci (Weinh)
January 2025
SKKU Advanced Institute of Nanotechnology (SAINT), Department of Nano Engineering, Department of Nano Science and Technology, School of Chemical Engineering, Biomedical Institute for Convergence at SKKU, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea.
Despite their safety and widespread use, conventional protein antigen-based subunit vaccines face significant challenges such as low immunogenicity, insufficient long-term immunity, poor CD8 T-cell activation, and poor adaptation to viral variants. To address these issues, an infection-mimicking gel (IM-Gel) is developed that is designed to emulate the spatiotemporal dynamics of immune stimulation in acute viral infections through in situ supramolecular self-assembly of nanoparticulate-TLR7/8a (NP-TLR7/8a) and an antigen with tannic acid (TA). Through collagen-binding properties of TA, the IM-Gel enables sustained delivery and enhanced retention of NP-TLR7/8a and protein antigen in the lymph node subcapsular sinus of mice for over 7 days, prolonging the exposure of vaccine components in both B cell and T cell zones, leading to robust humoral and cellular responses.
View Article and Find Full Text PDFIntegration of silver nanostructures in wireless sensor networks for enhanced biochemical sensing.
Discov Nano
January 2025
Mizan-Tepi University, Tepi, Ethiopia.
Integrating noble metal nanostructures, specifically silver nanoparticles, into sensor designs has proven to enhance sensor performance across key metrics, including response time, stability, and sensitivity. However, a critical gap remains in understanding the unique contributions of various synthesis parameters on these enhancements. This study addresses this gap by examining how factors such as temperature, growth time, and choice of capping agents influence nanostructure shape and size, optimizing sensor performance for diverse conditions.
View Article and Find Full Text PDFEnhanced detection of Brain-Derived Neurotrophic Factor (BDNF) using a reduced graphene oxide field-effect transistor aptasensor.
Nanoscale
January 2025
James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK.
Neurodegenerative diseases, characterized by the progressive deterioration of neuronal function and structure, pose significant global public health and economic challenges. Brain-Derived Neurotrophic Factor (BDNF), a key regulator of neuroplasticity and neuronal survival, has emerged as a critical biomarker for various neurodegenerative and psychiatric disorders, including Alzheimer's disease. Traditional diagnostic methods, such as Enzyme-Linked Immunosorbent Assay (ELISA) and electrochemiluminescence (ECL) assays, face limitations in terms of sensitivity, stability, reproducibility, and cost-effectiveness.
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