Background: The adenomatous polyposis coli (APC) gene is a tumor suppressor gene which is mutated in the hereditary disease, familial adenomatous polyposis (FAP). Somatic mutations of the APC gene have also been identified in the majority of sporadic colorectal carcinomas, and mutation of the APC gene appears to be an early step in the initiation of colon cancer. Loss of heterozygosity (LOH) of APC has been described in a variety of other cancer types, including renal cell carcinoma, gastric cancer, non-small cell lung cancer, endometrial cancer and oral squamous cell carcinomas (SCC).
Aim: To determine the role played by APC gene in the genesis of cutaneous SCC.
Materials And Methods: Allelic imbalance/loss of heterozygosity (AI/LOH) was examined in twenty-two histologically confirmed cutaneous squamous cell carcinomas (SCC) using microsatellite markers, proximal to the APC gene. Immunohistochemical analysis of APC protein expression was also examined in the cutaneous SCC.
Results: AI/LOH was detected in 60% of the SCC samples using D5S346 marker (proximal to the APC gene). Ninty-five percent of the SCC samples showed positive reduced APC expression, however the localization of the APC protein was abnormal.
Conclusion: The abnormal expression of APC suggests that APC gene may play a role in cutaneous SCC development.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Mutation Analysis of TMB-High Colorectal Cancer: Insights Into Molecular Pathways and Clinical Implications.
Cancer Sci
January 2025
Oncology Innovation Center, Fujita Health University, Toyoake, Aichi, Japan.
Colorectal cancer (CRC) is well characterized in terms of genetic mutations and the mechanisms by which they contribute to carcinogenesis. Mutations in APC, TP53, and KRAS are common in CRC, indicating key roles for these genes in tumor development and progression. However, for certain tumors with low frequencies of these mutations that are defined by tumor location and molecular phenotypes, a carcinogenic mechanism dependent on BRAF mutations has been proposed.
View Article and Find Full Text PDFEnhancing single-cell transcriptomics using interposed anchor oligonucleotide sequences.
Commun Biol
January 2025
Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, National Institute of Health Research Oxford Biomedical Research Unit (BRU), University of Oxford, Oxford, UK.
Single-cell transcriptomics, which utilises barcodes and unique molecular identifiers (UMIs) for polyA+ mRNA capture, is compromised by oligonucleotide synthesis errors. To address this, we modified the oligonucleotide capture design and integrated an interposed anchor between the barcode and the UMI. This design significantly reduces the need to discard reads due to synthesis inaccuracies.
View Article and Find Full Text PDFMolecular Dynamics of Adenomatous Polyposis Coli (APC) Protein and Its Inhibitors: A Special Insight to Colorectal Cancer.
Crit Rev Oncog
January 2025
National Institute of Pharmaceutical Education and Research, Ahmedabad, Gujarat, India -382055, Gujarat, India.
Colorectal cancer (CRC) initiates in colon or rectum is named as colon or rectal cancer, based on the site of inception. Various genetic alterations responsible for CRC include several signaling pathways. The Wingless/Wnt signaling pathway is the vital pathway which involved in the cancer pathogenesis.
View Article and Find Full Text PDFTowards a Platform Chromatography Purification Process for Adeno-Associated Virus (AAV).
Biotechnol J
January 2025
School of Chemical and Bioprocess Engineering, University College Dublin, Dublin, Ireland.
Adeno-associated virus (AAV) is a versatile viral vector technology that can be engineered for specific functionality in vaccine and gene therapy applications. One of the major challenges in AAV production is the need for a GMP-ready platform-based approach to downstream processing, as this would lead to a standardized method for multiple products. Chromatography has huge potential in AAV purification, as it is a scalable method that would enable manufacturing to a high degree of purity, potency, and consistency.
View Article and Find Full Text PDFTargeted gene sequencing and bioinformatics analysis of patients with gallbladder neuroendocrine carcinoma: A case report.
World J Gastrointest Oncol
January 2025
Department of Medical College, Jinan University, Guangzhou 510000, Guangdong Province, China.
Background: Gallbladder neuroendocrine carcinoma (NEC) represents a subtype of gallbladder malignancies characterized by a low incidence, aggressive nature, and poor prognosis. Despite its clinical severity, the genetic alterations, mechanisms, and signaling pathways underlying gallbladder NEC remain unclear.
Case Summary: This case study presents a rare instance of primary gallbladder NEC in a 73-year-old female patient, who underwent a radical cholecystectomy with hepatic hilar lymphadenectomy and resection of liver segments IV-B and V.
Want 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!