This retrospective study was designed to assess statin effects on T-cell activation from HIV-infected individuals. Peripheral blood mononuclear cells from antiretroviral therapy suppressed HIV-infected individuals receiving atorvastatin or pravastatin were evaluated for T-cell activation, exhaustion and function. Atorvastatin was associated with a significant reduction in CD8 T-cell activation (HLA-DR, CD38/HLA-DR) and exhaustion (TIM-3, TIM-3/PD-1) whereas pravastatin had no effect. In contrast, pravastatin increased antigen specific interferon γ production. These results suggest a differential effect of statins on immune activation and function.
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http://dx.doi.org/10.1097/QAD.0000000000000475 | DOI Listing |
Cancer Med
January 2025
Division of Oncology, The Children's Hospitial of Philadelphia, Philadelphia, Pennsylvania, USA.
Background: Single antigen (Ag)-targeted immunotherapies for acute lymphoblastic leukemia (ALL) are highly effective; however, up to 50% of patients relapse after these treatments. Most of these relapses lack target Ag expression, suggesting targeting multiple Ags would be advantageous.
Materials & Methods: The multi-Ag immune responses to ALL induced by transducing cell lines with xenoAgs green fluorescent protein and firefly luciferase was elucidated using flow cytometry, ELISA, and ELISpot assays.
Adv Mater
December 2024
Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China.
The precise manipulation of PANoptosis, a newly defined cell death pathway encompassing pyroptosis, apoptosis, and necroptosis, is highly desired to achieve safer cancer immunotherapy with tumor-specific inflammatory responses and minimal side effects. Nonetheless, this objective remains a formidable challenge. Herein, an "AND" logic-gated strategy for accurately localized PANoptosis activation, utilizing composite 3D-printed bioactive glasses scaffolds integrated with epigenetic regulator-loaded porous piezoelectric SrTiO nanoparticles is proposed.
View Article and Find Full Text PDFJ Immunother
December 2024
Department of Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan, South Korea.
Dendritic cells (DCs) are specialized immune cells that play a crucial role in presenting antigens and activating cytotoxic T lymphocytes to combat tumors. The immune checkpoint receptor programmed cell death-1 (PD-1) can bind to its ligand programmed cell death-ligand 1 (PD-L1), which is expressed on the surface of cancer cells. This interaction suppresses T-cell activation and promotes immune tolerance.
View Article and Find Full Text PDFImmunopharmacol Immunotoxicol
December 2024
Nursing Department, College of Nursing and Health Sciences, Jazan University, Jazan, Saudi Arabia.
Background: One of the common findings in systemic sclerosis (SSc) patients has been long-term exposure to environmental toxins such as pesticides. However, the data available shows an equivocal association between pesticide exposure and autoimmunity in SSc.
Methods: We investigated the levels of organochlorine pesticides (OCPs) in blood of 20 SSc patients and 17 healthy controls, and also studied their effect on T lymphocytes and their functional responses.
Cell Mol Life Sci
December 2024
State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.
Understanding how embryonic progenitors decode extrinsic signals and transform into lineage-specific regulatory networks to drive cell fate specification is a fundamental, yet challenging question. Here, we develop a new model of surface epithelium (SE) differentiation induced by human embryonic stem cells (hESCs) using retinoic acid (RA), and identify BMP4 as an essential downstream signal in this process. We show that the retinoid X receptors, RXRA and RXRB, orchestrate SE commitment by shaping lineage-specific epigenetic and transcriptomic landscapes.
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