@Article{or.2024.052244,
AUTHOR = {CHUAN JIANG, CHUNLEI LIU, XI YAO, JINGYA SU, WEI LU, ZHENGBO WEI, YING XIE},
TITLE = {CES1 is associated with cisplatin resistance and poor prognosis of head and neck squamous cell carcinoma},
JOURNAL = {Oncology Research},
VOLUME = {32},
YEAR = {2024},
NUMBER = {12},
PAGES = {1935--1948},
URL = {http://www.techscience.com/or/v32n12/58613},
ISSN = {1555-3906},
ABSTRACT = { <b>Background:</b> Head and neck squamous cell carcinoma (HNSCC) is a prevalent form of cancer globally, with chemoresistance posing a major challenge in treatment outcomes. The efficacy of the commonly used chemotherapeutic agent, cisplatin, is diminished in patients with poor prognoses. <b>Methods:</b> Various bioinformatics databases were utilized to examine Carboxylesterase 1 (CES1) gene expression, clinicopathologic features, patient survival analysis, and gene function. An organoid model of HNSCC was established, along with the induction of drug-resistant HNSCC in the organoid model. CES1 expression was assessed using qRT-PCR and Western Blot, and differential markers were identified through transcriptome sequencing. Knockdown and overexpression models of CES1 were created in SCC-9 and patient-derived organoid (PDO) cells using shRNA and lentivirus to investigate the tumor biology and cisplatin resistance associated with CES1. <b>Results:</b> Research in bioinformatics has uncovered a strong correlation between the expression level of CES1 and the prognosis of HNSCC. The data suggests a significant link between CES1 expression and tobacco smoking. RNA-sequencing revealed a notable increase in CES1 expression in HNSCC-PDO<sup>cis-R</sup> cells compared to the parental PDO cells. Subsequently, we performed <i>in vitro</i> studies by HNSCC-PDO and SCC-9 and found that CES1-overexpressing cells exhibited reduced sensitivity to cisplatin and stronger tumor malignant biological behavior compared with CES1-knockdown cells. <b>Conclusion:</b> The observed association between CES1 expression and tobacco smoking implies a potential influence of smoking on the efficacy of cisplatin-based chemotherapy in HNSCC through the regulation of CES1 expression.},
DOI = {10.32604/or.2024.052244}
}