AI Article Synopsis
- Kaposi's sarcoma (KS) is a common tumor that can occur after organ transplants, and this study investigates its connection to the HHV-8 virus and the mTOR signaling pathway in skin KS cases from renal transplant recipients.
- The research focused on twelve patients, analyzing tumor tissue for various molecular markers and classifying KS lesions by their development stage (patch, plaque, nodule).
- Findings revealed that HHV-8 was present in all samples, with increased activation of the mTOR pathway correlating to more advanced KS stages, and patients showed complete lesion disappearance when treated with mTOR inhibitors after an average follow-up of over 14 years.
Article Abstract
Kaposi's sarcoma (KS) is one of the most frequent transplant related tumors. Several pathways are involved; however, the impact of the molecular phenotype associated to the tumor stage and the behavior-depending resultant therapy is still unknown. The aim of our study was to analyze the role of HHV-8 and mTOR pathway in tumor stages of skin KS after renal transplantation. Twelve renal transplant recipients with cutaneous KS from five transplant centers (1980-2007) under reduction of immunosuppression or conversion to mTOR inhibitor were included. The expression of HHV-8, PTEN, TGFβ, VEGF, phospho-mTOR, and phospho-P70S6K in tumoral tissue was analyzed. KS lesions were classified as patch, plaque, and nodule state. HHV-8 infection was found in all tissue samples. KS lesions showed high activation of VEGF, p-mTOR and p-P70S6K, low PTEN, and null TGFβ expression. The only pathway activated in a staging-dependent manner was mTOR with higher p-mTOR and p-P70S6K expression in nodule versus patch stage. KS lesions disappeared after 5.24 months in all converted patients without any recurrence in 14.05 years of mean follow-up. The activation of mTOR pathway according to KS stages supports the rational of the mTOR inhibitor in post-transplant Kaposi.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/tri.12800 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Epidermal stem cell derived exosomes-induced dedifferentiation of myofibroblasts inhibits scarring via the miR-203a-3p/PIK3CA axis.
J Nanobiotechnology
January 2025
Department of Burns, Wound Repair and Reconstruction, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China.
Hypertrophic scar (HS) is a common fibroproliferative disorders with no fully effective treatments. The conversion of fibroblasts to myofibroblasts is known to play a critical role in HS formation, making it essential to identify molecules that promote myofibroblast dedifferentiation and to elucidate their underlying mechanisms. In this study, we used comparative transcriptomics and single-cell sequencing to identify key molecules and pathways that mediate fibrosis and myofibroblast transdifferentiation.
View Article and Find Full Text PDFBone marrow mesenchymal stem cell-derived extracellular vesicles alleviate diabetes-exacerbated atherosclerosis via AMPK/mTOR pathway-mediated autophagy-related macrophage polarization.
Cardiovasc Diabetol
January 2025
Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2 Anzhen Road, Chaoyang District, 100029, Beijing, China.
Introduction: Bone marrow-derived mesenchymal stem cell-derived extracellular vesicles (BMSC-EVs) are widely used for therapeutic purposes in preclinical studies. However, their utility in treating diabetes-associated atherosclerosis remains largely unexplored. Here, we aimed to characterize BMSC-EV-mediated regulation of autophagy and macrophage polarization.
View Article and Find Full Text PDFManagement options for vascular anomalies in the distal extremities.
Curr Probl Diagn Radiol
January 2025
Division of Vascular and Interventional Radiology, University of Alabama Birmingham, Birmingham, Alabama, USA. Electronic address:
Vascular anomalies arise during embryologic development due to errors in vasculogenesis. They are associated with sporadic or inherited mutations in receptors, growth factors or enzymes within various vasculogenic pathways such as mTOR, VEGF, and PI3K. Vascular anomalies have the capability to cause significant symptoms and disability, especially when located in the distal extremities.
View Article and Find Full Text PDFAdvances in Pharmacological Research on Icaritin: A Comprehensive Review.
Am J Chin Med
January 2025
Henan Key Laboratory of Digestive Organ Transplantation, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, P. R. China.
has been widely used in traditional Chinese medicine for several thousands of years. This plant is known for tonifying kidney Yang, strengthening muscles and bones, and dispelling wind and dampness. It is worth noting that icaritin, a prenylated flavonoid isolated from , has received increasing attention in recent years due to its wide range of pharmacological activities.
View Article and Find Full Text PDFmTOR/p70S6K signaling pathway promotes fibrillin-1 expression in AKI-to-CKD transition post CA/CPR.
Cell Signal
January 2025
School of Basic Medicine, Jiamusi University, Jiamusi 154007, PR China. Electronic address:
The possible involvement of mTOR/p70S6K signaling in mediating Fibrillin-1 expression during the transition from acute kidney injury (AKI) to chronic kidney disease (CKD) after cardiac arrest and cardiopulmonary resuscitation (CA/CPR). A CA/CPR AKI model was established using male C57BL/6 mice aged 8-12 weeks. The expression of Fibrillin-1 and activation of the mTOR/p70S6K signaling pathway in kidney tissues were assessed at different time points.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!