YAP-Driven Malignant Reprogramming of Oral Epithelial Stem Cells, bulk RNA sequencing
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE276781 | GEO | 2024/09/09
REPOSITORIES: GEO
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Project description:The mucosae of the oral cavity are different at the histological level but are all exposed to common genotoxic agents. As a result of this exposure, changes in the mucosal epithelia develop giving rise to Oral Potentially Malignant Lesions (OPMLs), which with time may in turn progress to Oral Squamous Cell Carcinomas (OSCCs). Therefore, much effort should be devoted to identify features able to predict the likeliness of progression associated with an OPML. Such features may be helpful in assisting the clinician to establish both appropriate therapies and follow-up schedules. Here, we report a pilot study that compared the anatomical subsites of OPMLs development with occurrence of DNA aneuploidy and chromosomal copy number aberrations (CNAs). Multiple samples from histologically diagnosed OPMLs were processed for high resolution DNA flow cytometry (hr DNA-FCM) in order to determine the relative DNA content expressed by the DNA index (DI). Additionally, array-Comparative Genomic Hybridization (a-CGH) analysis was performed on FCM-sorted nuclei subpopulations based on DI values. Tongue OPMLs were more frequently associated with DNA aneuploidy and CNAs than OPMLs arising from all the other mucosal subsites. We suggest that the follow-up and the management of the patients with tongue OPMLs should receive a distinctive special attention. Clearly, this conclusion should be validated in a prospective clinical study. exposed to common genotoxic agents. As a result of this exposure, changes in the mucosal epithelia develop giving rise to Oral Potentially Malignant Lesions (OPMLs), which with time may in turn progress to Oral Squamous Cell Carcinomas (OSCCs). Therefore, much effort should be devoted to identify features able to predict the likeliness of progression associated with an OPML. Such features may be helpful in assisting the clinician to establish both appropriate therapies and follow-up schedules. Here, we report a pilot study that compared the anatomical subsites of OPMLs development with occurrence of DNA aneuploidy and chromosomal copy number aberrations (CNAs). Multiple samples from histologically diagnosed OPMLs were processed for high resolution DNA flow cytometry (hr DNA-FCM) in order to determine the relative DNA content expressed by the DNA index (DI). Additionally, array-Comparative Genomic Hybridization (a-CGH) analysis was performed on FCM-sorted nuclei subpopulations based on DI values. Tongue OPMLs were more frequently associated with DNA aneuploidy and CNAs than OPMLs arising from all the other mucosal subsites. We suggest that the follow-up and the management of the patients with tongue OPMLs should receive a distinctive special attention. Clearly, this conclusion should be validated in a prospective clinical study. We analyzed: 19 samples (4 aneuploid and 15 diploid components) deriving from oral potentially malignant lesions without dysplasia obtained of 16 patients; 14 samples (2 aneuploid and 12 diploid components) deriving from oral potentially malignant lesions with dysplasia obtained from 11 patients (two patients had multiple dysplastic lesions); 2 samples from visually normal mucosa in the near field obtained from two patients with dysplastic lesions. All the aneuploid samples had a purity of at least 90%.
2011-10-19 | E-GEOD-28868 | biostudies-arrayexpress
Project description:The mucosae of the oral cavity are different at the histological level but are all exposed to common genotoxic agents. As a result of this exposure, changes in the mucosal epithelia develop giving rise to Oral Potentially Malignant Lesions (OPMLs), which with time may in turn progress to Oral Squamous Cell Carcinomas (OSCCs). Therefore, much effort should be devoted to identify features able to predict the likeliness of progression associated with an OPML. Such features may be helpful in assisting the clinician to establish both appropriate therapies and follow-up schedules. Here, we report a pilot study that compared the anatomical subsites of OPMLs development with occurrence of DNA aneuploidy and chromosomal copy number aberrations (CNAs). Multiple samples from histologically diagnosed OPMLs were processed for high resolution DNA flow cytometry (hr DNA-FCM) in order to determine the relative DNA content expressed by the DNA index (DI). Additionally, array-Comparative Genomic Hybridization (a-CGH) analysis was performed on FCM-sorted nuclei subpopulations based on DI values. Tongue OPMLs were more frequently associated with DNA aneuploidy and CNAs than OPMLs arising from all the other mucosal subsites. We suggest that the follow-up and the management of the patients with tongue OPMLs should receive a distinctive special attention. Clearly, this conclusion should be validated in a prospective clinical study. exposed to common genotoxic agents. As a result of this exposure, changes in the mucosal epithelia develop giving rise to Oral Potentially Malignant Lesions (OPMLs), which with time may in turn progress to Oral Squamous Cell Carcinomas (OSCCs). Therefore, much effort should be devoted to identify features able to predict the likeliness of progression associated with an OPML. Such features may be helpful in assisting the clinician to establish both appropriate therapies and follow-up schedules. Here, we report a pilot study that compared the anatomical subsites of OPMLs development with occurrence of DNA aneuploidy and chromosomal copy number aberrations (CNAs). Multiple samples from histologically diagnosed OPMLs were processed for high resolution DNA flow cytometry (hr DNA-FCM) in order to determine the relative DNA content expressed by the DNA index (DI). Additionally, array-Comparative Genomic Hybridization (a-CGH) analysis was performed on FCM-sorted nuclei subpopulations based on DI values. Tongue OPMLs were more frequently associated with DNA aneuploidy and CNAs than OPMLs arising from all the other mucosal subsites. We suggest that the follow-up and the management of the patients with tongue OPMLs should receive a distinctive special attention. Clearly, this conclusion should be validated in a prospective clinical study.
2011-10-20 | GSE28868 | GEO
Project description:Objectives. Oral verrucous hyperplasia (OVH) is commonly observed in the oral cavity of betel quid chewers that histologically display epithelial hyperplasia with or without dysplasia. Because of the high frequency of synchronous OVH adjacent to oral carcinomas, OVH is considered a potential malignant disorder, and studies of prognostic factors and genetic alterations are required. Materials and Methods. We conducted a follow-up study of 269 OVH patients at Chi-Mei Medical Center. A Kaplan-Meier analysis and Cox's proportional-hazards regression model were used to calculate the survival rate and prognostic factors of disease recurrence and transformation. Copy number variations (CNVs) were analyzed using a single-nucleotide polymorphism (SNP) array. Results. The 5-year disease-free and cancer-free survival rates of patients with OVH were 52% and 77%, respectively. Heavy betel quid (BQ) chewing (>20 nuts/day), the severity of oral submucosal fibrosis (OSF), and non-buccal and non-tongue lesions were high risk factors for malignant transformation, while dysplasia did not affect outcomes. A genetic analysis showed that OVH already possessed many CNVs present in oral squamous cell carcinoma (OSCC), and a bioinformatics analysis of CNV-associated genes revealed that the upregulation of CTTN, FOLR3, ORAOV1, PPFIA1, and RNF121 could help identify high-risk OVH patients. Conclusions. BQ-associated OVH has a high malignant potential, and more attention must be paid to OVH patients who have a heavy BQ chewing habit and advanced OSF, and whose tumor is located at non-buccal and non-tongue regions. The five CNV-associated genes can be used for early diagnosis and for predicting the prognosis.
2019-07-01 | GSE101761 | GEO
Project description:YAP-Driven Malignant Reprogramming of Oral Epithelial Stem Cells, ATAC sequencing
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Project description:Gene expression profiles of oral tongue squamous cell carcinoma tissues. Keywords: human tongue cancer, brachytherapy, biopsy sample, primary tissues
2007-03-28 | GSE4676 | GEO
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