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Costa RF, de Oliveira CA, Gomes ÁNDM, Lourenço SV, Coutinho-Camillo CM. Molecular Aspects of Mucoepidermoid Carcinoma and Adenoid Cystic Carcinoma of the Salivary Gland. Head Neck Pathol 2024; 18:34. [PMID: 38658430 PMCID: PMC11043314 DOI: 10.1007/s12105-024-01629-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 02/12/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND Salivary gland tumors (SGTs) are rare and highly heterogeneous lesions, making diagnosis a challenging activity. In addition, the small number of studies and samples evaluated difficults the determination of prognosis and diagnosis. Despite the solid advances achieved by research, there is still an intense need to investigate biomarkers for diagnosis, prognosis and that explain the evolution and progression of SGTs. METHODS We performed a comprehensive literature review of the molecular alterations focusing on the most frequent malignant SGTs: mucoepidermoid carcinoma and adenoid cystic carcinoma. RESULTS Due to the importance of biomarkers in the tumorigenenic process, this review aimed to address the mechanisms involved and to describe molecular and biomarker pathways to better understand some aspects of the pathophysiology of salivary gland tumorigenesis. CONCLUSIONS Molecular analysis is essential not only to improve the diagnosis and prognosis of the tumors but also to identify novel driver pathways in the precision medicine scenario.
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Affiliation(s)
- Raisa Ferreira Costa
- International Research Center, A.C.Camargo Cancer Center, Rua Taguá, 440 - Primeiro andar, São Paulo, 01508-010, Brazil
| | - Carolinne Alves de Oliveira
- International Research Center, A.C.Camargo Cancer Center, Rua Taguá, 440 - Primeiro andar, São Paulo, 01508-010, Brazil
| | - Ágatha Nagli de Mello Gomes
- International Research Center, A.C.Camargo Cancer Center, Rua Taguá, 440 - Primeiro andar, São Paulo, 01508-010, Brazil
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Papanikolaou V, Chrysovergis A, Adamopoulou M, Spyropoulou D, Roukas D, Papanastasiou G, Mastronikoli S, Papouliakos S, Manaios L, Tsiambas E, Pantos P, Ragos V, Fotiades P, Peschos D, Mastronikolis N, Kyrodimos E. PTEN Deregulation Mechanisms in Salivary Gland Carcinomas. CANCER DIAGNOSIS & PROGNOSIS 2024; 4:25-29. [PMID: 38173659 PMCID: PMC10758848 DOI: 10.21873/cdp.10280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/13/2023] [Indexed: 01/05/2024]
Abstract
Among the tumour suppressor genes that affect critically cell functions and homeostasis, phosphatase and tensin homolog deleted in chromosome 10 (PTEN- gene locus: 10q21) regulates the PI3K/Akt/mTOR signalling pathway. PTEN is deleted, mutated or epigenetically hyper-methylated in a variety of human solid malignancies. Salivary gland carcinomas (SGCs) belong to the head and neck carcinomas (HNCs) super category of solid malignancies. Histo-pathologically, they demonstrate a significant diversity due to a variety of distinct and mixed subtypes. Genetically, they are characterized by a broad spectrum of gene and chromosomal imbalances. Referring specifically to suppressor genes, PTEN deregulation plays a critical role in signaling transduction in the corresponding SGC pre- and malignant epithelia modifying the response rates to potential targeted therapeutic strategies. In the current review, we explored the role of PTEN deregulation mechanisms that are involved in the onset and progression of SGCs.
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Affiliation(s)
- Vasileios Papanikolaou
- First Department of Otolaryngology, Hippocration Hospital, University of Athens, Athens, Greece
| | - Aristeidis Chrysovergis
- First Department of Otolaryngology, Hippocration Hospital, University of Athens, Athens, Greece
| | - Maria Adamopoulou
- Biomedical Sciences Program, Department of Science and Mathematics, Deree American College, Athens, Greece
| | - Despoina Spyropoulou
- Department of Radiation Oncology, Medical School, University of Patras, Patras, Greece
| | - Dimitrios Roukas
- Department of Psychiatry, 417 Veterans Army Hospital (NIMTS), Athens, Greece
| | - George Papanastasiou
- Department of Maxillofacial Surgery, Medical School, University of Ioannina, Ioannina, Greece
| | | | | | | | - Evangelos Tsiambas
- Department of Cytology, 417 Veterans Army Hospital (NIMTS), Athens, Greece
| | - Pavlos Pantos
- First Department of Otolaryngology, Hippocration Hospital, University of Athens, Athens, Greece
| | - Vasileios Ragos
- Department of Maxillofacial Surgery, Medical School, University of Ioannina, Ioannina, Greece
| | | | - Dimitrios Peschos
- Department of Physiology, Medical School, University of Ioannina, Ioannina, Greece
| | | | - Efthymios Kyrodimos
- First Department of Otolaryngology, Hippocration Hospital, University of Athens, Athens, Greece
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Bai H, Xia S, Zhu L, Dong Y, Liu C, Li N, Liu H, Xiao J. Altered polymerase theta expression promotes chromosomal instability in salivary adenoid cystic carcinoma. J Cell Mol Med 2022; 26:3931-3949. [PMID: 35726713 PMCID: PMC9279586 DOI: 10.1111/jcmm.17429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/10/2022] [Accepted: 05/20/2022] [Indexed: 11/28/2022] Open
Abstract
Genomic instability (GIN) plays a key role in cancer progression. The disorders of polymerase theta (POLQ) were reported to contribute to GIN and progression in many cancers. Here, we found that POLQ over‐expression was related to salivary adenoid cystic carcinoma (SACC) progression and poor prognosis. Then, we investigated the role and mechanism of POLQ in the GIN in SACC. GIN was assessed by chromosome staining with DAPI and Giemsa, as well as qRT‐PCR of the mitosis‐related gene expression. Meanwhile, PCR‐SSCP was used to evaluate microsatellite instability. Modulation of POLQ expression increased chromosomal instability and enhanced the sensitivity to etoposide without impacting microsatellite stability. Mechanistically, POLQ regulated genome stability by promoting the expression of the error‐prone alt‐NHEJ‐related protein PARP1, and down‐regulating c‐NHEJ‐ and HR‐related proteins KU70 and RAD51. In vitro CCK, Transwell assays and in vivo murine xenograft models indicated that the PARP inhibitor olaparib suppressed SACC growth in the case of etoposide‐induced DNA damage. Bioinformatic analysis identified CEBPB as a potential POLQ‐regulating transcription factor. In summary, our research provides new insights into the mechanisms of SACC chromosomal instability and identifies new potential targets for SACC treatment.
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Affiliation(s)
- Han Bai
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Shilin Xia
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lei Zhu
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Yan Dong
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Chao Liu
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Nan Li
- College of Stomatology, Dalian Medical University, Dalian, China.,Liaoning Province Key Laboratory of Organism Microecology and Disease Control, Dalian, China
| | - Han Liu
- College of Stomatology, Dalian Medical University, Dalian, China.,Liaoning Province Key Laboratory of Organism Microecology and Disease Control, Dalian, China
| | - Jing Xiao
- College of Stomatology, Dalian Medical University, Dalian, China.,Liaoning Province Key Laboratory of Organism Microecology and Disease Control, Dalian, China
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Transcriptomic Biomarker Signatures for Discrimination of Oral Cancer Surgical Margins. Biomolecules 2022; 12:biom12030464. [PMID: 35327656 PMCID: PMC8946245 DOI: 10.3390/biom12030464] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/01/2022] [Accepted: 03/11/2022] [Indexed: 02/01/2023] Open
Abstract
Relapse after surgery for oral squamous cell carcinoma (OSCC) contributes significantly to morbidity, mortality and poor outcomes. The current histopathological diagnostic techniques are insufficiently sensitive for the detection of oral cancer and minimal residual disease in surgical margins. We used whole-transcriptome gene expression and small noncoding RNA profiles from tumour, close margin and distant margin biopsies from 18 patients undergoing surgical resection for OSCC. By applying multivariate regression algorithms (sPLS-DA) suitable for higher dimension data, we objectively identified biomarker signatures for tumour and marginal tissue zones. We were able to define molecular signatures that discriminated tumours from the marginal zones and between the close and distant margins. These signatures included genes not previously associated with OSCC, such as MAMDC2, SYNPO2 and ARMH4. For discrimination of the normal and tumour sampling zones, we were able to derive an effective gene-based classifying model for molecular abnormality based on a panel of eight genes (MMP1, MMP12, MYO1B, TNFRSF12A, WDR66, LAMC2, SLC16A1 and PLAU). We demonstrated the classification performance of these gene signatures in an independent validation dataset of OSCC tumour and marginal gene expression profiles. These biomarker signatures may contribute to the earlier detection of tumour cells and complement existing surgical and histopathological techniques used to determine clear surgical margins.
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