Tumor volume increases continuously in the advanced stage, and aside from the self-renewal of tumor cells, whether the oncogenic transformation of surrounding normal cells is involved in this process is currently unclear. Here, we show that oral squamous cell carcinoma (OSCC)-derived small extracellular vesicles (sEVs) promote the proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) of normal epithelial cells but delay their apoptosis. In addition, nuclear-cytoplasmic invaginations and multiple nucleoli are observed in sEV-treated normal cells, both of which are typical characteristics of premalignant lesions of OSCC. Mechanistically, miR-let-7c in OSCC-derived sEVs is transferred to normal epithelial cells, leading to the transcriptional inhibition of p53 and inactivation of the p53/PTEN pathway. In summary, we demonstrate that OSCC-derived sEVs promote the precancerous transformation of normal epithelial cells, in which the miR-let-7c/p53/PTEN pathway plays an important role. Our findings reveal that cancer cells can corrupt normal epithelial cells through sEVs, which provides new insight into the progression of OSCC.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293927 | PMC |
| http://dx.doi.org/10.1038/s41368-022-00192-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Spatial Localization of Collagen Hydroxylated Proline Site Variation as an Ancestral Trait in the Breast Cancer Microenvironment.
Matrix Biol
January 2025
Department of Pharmacology & Immunology, Proteomics Center, Medical University of South Carolina, Charleston, SC. Electronic address:
Collagen stroma interactions within the extracellular microenvironment of breast tissue play a significant role in breast cancer, including risk, progression, and outcomes. Hydroxylation of proline (HYP) is a common post-translational modification directly linked to breast cancer survival and progression. Changes in HYP status lead to alterations in epithelial cell signaling, extracellular matrix remodeling, and immune cell recruitment.
View Article and Find Full Text PDFA rare case of recurrent calcifying epithelial odontogenic tumor in an adolescent patient: Case report and review of literature.
Oral Oncol
January 2025
Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun 130012, China. Electronic address:
Calcifying epithelial odontogenic tumor (CEOT) is a rare benign odontogenic epithelial tumor characterized by the presence of amyloid material within the tumor that can undergo calcification. CEOT affects individuals across a broad age range, typically between 20 and 60 years, with an average onset age of 40 years. However, it is extremely rare in children and adolescents.
View Article and Find Full Text PDFPharmacological, computational, and mechanistic insights into triptolide's role in targeting drug-resistant cancers.
Naunyn Schmiedebergs Arch Pharmacol
January 2025
Research and Enterprise, University of Cyberjaya, Persiaran Bestari, Cyber 11, 63000, Cyberjaya, Selangor, Malaysia.
As a promising candidate for tackling drug-resistant cancers, triptolide, a diterpenoid derived from the Chinese medicinal plant Tripterygium wilfordii, has been developed. This review summarizes potential antitumor activities, including the suppression of RNA polymerase II, the suppression of heat shock proteins (HSP70 and HSP90), and the blockade of NF-kB signalling. Triptolide is the first known compound to target cancer cells specifically but spare normal cells, and it has success in treating cancers that are difficult to treat, including pancreatic, breast, and lung cancers.
View Article and Find Full Text PDFThe Role of TRPV1/CGRP Pathway Activated by in Pathogenesis of Oral Lichen Planus.
Int J Mol Sci
January 2025
Shanghai Engineering Research Center of Tooth Restoration and Regeneration & Tongji Research Institute of Stomatology & Department of Oral Mucosal Diseases, Shanghai Tongji Stomatological Hospital and Dental School, Tongji University, Shanghai 200072, China.
The distinctive clinicopathologic characteristics of OLP indicated that both microbial dysbiosis and neurogenic inflammation may be jointly involved in its progression, and transient receptor potential vanilloid receptor-1 (TRPV1) may be a crucial element. The purpose of this study was to explore how TRPV1 mediated -induced inflammation. Meanwhile, we aimed to unravel how IL-36γ dysregulated the barrier function in oral keratinocytes.
View Article and Find Full Text PDFMolecular Mechanisms of Dietary Compounds in Cancer Stem Cells from Solid Tumors: Insights into Colorectal, Breast, and Prostate Cancer.
Int J Mol Sci
January 2025
Department of Biochemistry and Biophysics, "Carol Davila" University of Medicine and Pharmacy of Bucharest, 050474 Bucharest, Romania.
Cancer stem cells (CSC) are known to be the main source of tumor relapse, metastasis, or multidrug resistance and the mechanisms to counteract or eradicate them and their activity remain elusive. There are different hypotheses that claim that the origin of CSC might be in regular stem cells (SC) and, due to accumulation of mutations, these normal cells become malignant, or the source of CSC might be in any malignant cell that, under certain environmental circumstances, acquires all the qualities to become CSC. Multiple studies indicate that lifestyle and diet might represent a source of wellbeing that can prevent and ameliorate the malignant phenotype of CSC.
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!