Loading
Cancer Cells and Metastasis / Head and Neck Cancer Studies · Journal article
International Journal of Molecular Sciences · August 18, 2026
Raises a question worth testing. It does not answer one.
This is an in vitro transcriptomic study comparing cisplatin-resistant and parental oral squamous cell carcinoma (SCC-9) cell lines to identify gene expression changes associated with resistance. The work documents EMT-related transcriptional signatures and pathway enrichment in resistant sublines but remains exploratory and mechanistic; it does not establish clinical relevance or validate findings in patient samples or animal models.
In vitro transcriptomic study using cell line models. Squamous cell carcinoma 9 (SCC-9) cell line and derived cisplatin-resistant sublines (CPR4 and CPR8); no patient samples or in vivo models.. Intervention: In vitro exposure to cisplatin to generate resistant cell populations. Compared with: Parental (cisplatin-sensitive) SCC-9 cell line.
Resistant cells showed increased mRNA expression of Vimentin, SNAIL1, ZEB1, ZEB2, and CDH2, consistent with EMT-related features Intermediately resistant population (CPR4) exhibited greater wound closure, suggesting enhanced migratory behavior and hybrid-like EMT state More resistant subline (CPR8) exhibited a more stationary phenotype
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
This study provides candidate genes and pathways for investigation but does not yet establish whether these transcriptional changes occur in patients with oral cancer or whether targeting identified pathways would reverse cisplatin resistance clinically. Further functional validation and human studies are required before clinical application.
In vitro mechanistic study using cell line models to explore transcriptional changes associated with cisplatin resistance; raises questions about EMT involvement rather than answering clinical questions with human data.
As stated by the source record.
This study provides candidate genes and pathways for investigation but does not yet establish whether these transcriptional changes occur in patients with oral cancer or whether targeting identified pathways would reverse cisplatin resistance clinically. Further functional validation and human studies are required before clinical application.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no reported figures. That is a gap in the analysis, not a judgement about the study.
Therapy resistance remains a major cause of cancer-related mortality. Cisplatin (cis-diamminedichloroplatinum, CDDP) is a first-line chemotherapeutic agent for oral cancer, but intrinsic and acquired resistance substantially limit its clinical efficacy. Epithelial–mesenchymal transition (EMT) has been associated with drug resistance across multiple tumor types; however, its involvement in cisplatin resistance in oral cancer remains incompletely understood. Here, we established an in vitro model of cisplatin resistance using the squamous cell carcinoma 9 (SCC-9) cell line and generated two populations with distinct resistance levels. We observed morphological and transcriptional changes consistent with EMT-related features, including increased mRNA expression of Vimentin, SNAIL1, ZEB1, ZEB2, and CDH2. Resistant cells also exhibited reduced proliferation, whereas the intermediately resistant population, cisplatin-resistant 4 (CPR4), showed greater wound closure, suggesting enhanced migratory behavior and features consistent with a hybrid-like EMT state. Conversely, the more resistant subline, cisplatin-resistant 8 (CPR8), exhibited a more stationary phenotype. Transcriptomic profiling by RNA sequencing (RNA-seq) revealed extensive differential gene expression associated with EMT and cisplatin resistance. Functional enrichment analyses identified Gene Ontology (GO) terms related to cell adhesion, extracellular matrix organization, and calcium ion binding, while Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed enrichment of PI3K/Akt signaling. Together, our findings support a dynamic model in which distinct EMT-related transcriptional states are associated with different levels of cisplatin resistance. This study provides insights into transcriptional changes associated with resistance acquisition and highlights candidate genes and pathways for further investigation and functional validation in oral cancer.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.