2,848 results match your criteria Cell Biology of Head and Neck Squamous Cell Carcinoma

Copy number alterations identify a smoking-associated expression signature predictive of poor outcome in head and neck squamous cell carcinoma.

Cancer Genet 2021 May 28;256-257:136-148. Epub 2021 May 28.

Department of Biochemistry, Program in Cancer Cell Biology USA. Electronic address:

Cigarette smoking is a risk factor for the development of head and neck squamous cell carcinoma (HNSCC), partially due to tobacco-induced large-scale chromosomal copy-number alterations (CNAs). Identifying CNAs caused by smoking is essential in determining how gene expression from such regions impact tumor progression and patient outcome. We utilized The Cancer Genome Atlas (TCGA) whole genome sequencing data for HNSCC to directly identify amplified or deleted genes correlating with smoking pack-year based on linear modeling. Read More

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Development of photocontrolled BRD4 PROTACs for tongue squamous cell carcinoma (TSCC).

Eur J Med Chem 2021 Jun 5;222:113608. Epub 2021 Jun 5.

Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (MOE), School of Pharmacy, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China. Electronic address:

The catalytic properties of small-molecule proteolysis targeting chimeras (PROTACs) may lead to uncontrolled degradation. Therefore, the main disadvantages of PROTACs are non-cancer specificity and relatively high toxicity, which limit the clinical application of PROTACs. The photocontrolled PROTACs (photoPROTACs) were proposed to overcome this issue, in which they can be triggered by ultraviolet A (UVA) or visible light to induce the degradation of the target protein. Read More

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Constitutive Hedgehog/GLI2 signaling drives extracutaneous basaloid squamous cell carcinoma development and bone remodeling.

Carcinogenesis 2021 Jun 12. Epub 2021 Jun 12.

Department of Dermatology, University of Michigan, Ann Arbor, MI, USA.

Uncontrolled activation of the Hedgehog (Hh) signaling pathway, operating through GLI transcription factors, plays a central role in the pathogenesis of cutaneous basal cell carcinoma and contributes to the development of several malignancies arising in extracutaneous sites. We now report that K5-tTA;tetO-Gli2 bitransgenic mice develop distinctive epithelial tumors within their jaws. These tumors consist of large masses of highly proliferative, monomorphous, basaloid cells with scattered foci of keratinization and central necrosis, mimicking human basaloid squamous cell carcinoma (BSCC), an aggressive upper aerodigestive tract tumor. Read More

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Lysyl hydroxylase 2-induced collagen cross-link switching promotes metastasis in head and neck squamous cell carcinomas.

Neoplasia 2021 Jun 6;23(6):594-606. Epub 2021 Jun 6.

Division of Oral and Craniofacial health Sciences, Adams School of Dentistry, The University of North Carolina at Chapel Hill, NC, USA; Department of Cell Biology and Physiology, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Biomedical Research Imaging Center, UNC School of Medicine, The University of North Carolina at Chapel Hill, NC, USA; Lineberger Comprehensive Cancer Center, Cancer Cell Biology Program, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. Electronic address:

Head and neck squamous cell carcinoma (HNSCC) is the 6th most common cancer worldwide and incidence rates are continuing to rise globally. HNSCC patient prognosis is closely related to the occurrence of tumor metastases, and collagen within the tumor microenvironment (TME) plays a key role in this process. Lysyl hydroxylase 2 (LH2), encoded by the Procollagen-Lysine,2-Oxoglutarate 5-Dioxygenase 2 (PLOD2) gene, catalyzes hydroxylation of telopeptidyl lysine (Lys) residues of fibrillar collagens which then undergo subsequent modifications to form stable intermolecular cross-links that change the biomechanical properties (i. Read More

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B cell signatures and tertiary lymphoid structures contribute to outcome in head and neck squamous cell carcinoma.

Nat Commun 2021 06 7;12(1):3349. Epub 2021 Jun 7.

Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA.

Current immunotherapy paradigms aim to reinvigorate CD8 T cells, but the contribution of humoral immunity to antitumor immunity remains understudied. Here, we demonstrate that in head and neck squamous cell carcinoma (HNSCC) caused by human papillomavirus infection (HPV), patients have transcriptional signatures of germinal center (GC) tumor infiltrating B cells (TIL-Bs) and spatial organization of immune cells consistent with tertiary lymphoid structures (TLS) with GCs, both of which correlate with favorable outcome. GC TIL-Bs in HPV HNSCC are characterized by distinct waves of gene expression consistent with dark zone, light zone and a transitional state of GC B cells. Read More

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PAI-1 expression in intratumoral inflammatory infiltrate contributes to lymph node metastasis in oral cancer: A cross-sectional study.

Ann Med Surg (Lond) 2021 May 15;65:102303. Epub 2021 Apr 15.

Biotechnology Postgraduate Program, Federal University of Espirito Santo, Vitória, ES, Brazil.

Introduction: Immune cells contribute with mediators in the protein expression profile of the tumor microenvironment. Levels of plasminogen activator inhibitor-1 (PAI-1) are elevated in non-malignant inflammatory conditions; however, the association between PAI-1 expression and inflammation remains uncertain in oral squamous cell carcinoma (OSCC). This study aimed to investigate PAI-1 expression in mononuclear inflammatory cell infiltrate in OSCC and its role as a prognostic marker. Read More

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Alterations of bacterial communities of vocal cord mucous membrane increases the risk for glottic laryngeal squamous cell carcinoma.

J Cancer 2021 13;12(13):4049-4063. Epub 2021 May 13.

Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan 030001, China.

Bacteria are among the important factors that play a role in the balance of human health, and their relationship with some tumors has been well established. However, the association between bacteria colonizing the vocal cords and glottic laryngeal squamous cell carcinoma (GLSCC) remains unclear. Here, we investigated whether bacterial communities of the vocal cord mucous membrane play a role in the development of GLSCC. Read More

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The REASON score: an epigenetic and clinicopathologic score to predict risk of poor survival in patients with early stage oral squamous cell carcinoma.

Biomark Res 2021 Jun 5;9(1):42. Epub 2021 Jun 5.

New York University Rory Meyers College of Nursing, New York, NY, USA.

Background: Oral squamous cell carcinoma (OSCC) is a capricious cancer with poor survival rates, even for early-stage patients. There is a pressing need to develop more precise risk assessment methods to appropriately tailor clinical treatment. Genome-wide association studies have not produced a viable biomarker. Read More

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Ketogenic Diet with Concurrent Chemoradiation in Head and Neck Squamous Cell Carcinoma: Preclinical and Phase 1 Trial Results.

Radiat Res 2021 Jun 4. Epub 2021 Jun 4.

Free Radical and Radiation Biology Program, Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52246.

Ketogenic diets (KD) are high in fat and low in carbohydrates, forcing cells to utilize mitochondrial fatty acid oxidation for energy production. Since cancer cells demonstrate increased mitochondrial oxidative stress relative to normal cells, we hypothesized that a KD may selectively enhance metabolic oxidative stress in head and neck cancer cells, sensitizing them to radiation and platinum-based chemotherapy without causing increased toxicity in surrounding normal tissues. This hypothesis was tested in preclinical murine xenografts and in a phase 1 clinical trial (NCT01975766). Read More

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IGFL2-AS1 facilitates tongue squamous cell carcinoma progression via Wnt/β-catenin signaling pathway.

Oral Dis 2021 Jun 4. Epub 2021 Jun 4.

Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Shaanxi, 710061, China.

Objectives: Tongue squamous cell carcinoma (TSCC) is the most common malignancy in oral cancer. Long noncoding RNAs (lncRNAs) are important regulators in cancer biology. In our present study, we investigated a novel lncRNA IGF like family member 2 antisense RNA 1 (IGFL2-AS1) in TSCC. Read More

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Impact of Topoisomerases Complex Deregulation on Head and Neck Carcinoma Genomic Instability.

Anticancer Res 2021 Jun;41(6):2773-2779

First Department of Otorhinolaryngology, Head and Neck Surgery, Hippocration Hospital, National and Kapodistrian University of Athens, Athens, Greece.

Head and neck carcinoma (HNC) comprises a variety of pathological entities. Among them, squamous cell carcinoma (SCC) is histo-pathologically prominent. Specific malignancies, such as nasopharyngeal carcinoma (NPC) arise also from the same anatomical region. Read More

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Macrophage-Derived Exosomal miR-31-5p Promotes Oral Squamous Cell Carcinoma Tumourigenesis Through the Large Tumor Suppressor 2-Mediated Hippo Signalling Pathway.

J Biomed Nanotechnol 2021 May;17(5):822-837

Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing 211166, Jiangsu, PR China.

Tumour-associated macrophages (TAMs) are thought to contribute to oral squamous cell carcinoma (OSCC) initiation and progression. However, the underlying mechanism through which TAMs foster OSCC progression is still unclear. This study intended to determine whether there are exclusively exosomal miRNAs-derived macrophages that are functionally necessary for OSCC progression. Read More

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Resection Margins in Head and Neck Cancer Surgery: An Update of Residual Disease and Field Cancerization.

Cancers (Basel) 2021 May 27;13(11). Epub 2021 May 27.

Amsterdam UMC, Vrije Universiteit Amsterdam Tumor Biology and Immunology Section, Otolaryngology-Head and Neck Surgery, Cancer Center Amsterdam, 1081 HV Amsterdam, The Netherlands.

Surgery is one of the mainstays of head and neck cancer treatment, and aims at radical resection of the tumor with 1 cm tumor-free margins to obtain locoregional control. Surgical margins are evaluated by histopathological examination of the resection specimen. It has been long an enigma that approximately 10-30% of surgically treated head and neck cancer patients develop locoregional recurrences even though the resection margins were microscopically tumor-free. Read More

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Validation of Selected Head and Neck Cancer Prognostic Markers from the Pathology Atlas in an Oral Tongue Cancer Cohort.

Cancers (Basel) 2021 May 14;13(10). Epub 2021 May 14.

Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway.

The Pathology Atlas is an open-access database that reports the prognostic value of protein-coding transcripts in 17 cancers, including head and neck cancer. However, cancers of the various head and neck anatomical sites are specific biological entities. Thus, the aim of the present study was to validate promising prognostic markers for head and neck cancer reported in the Pathology Atlas in oral tongue squamous cell carcinoma (OTSCC). Read More

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Prognostic Markers and Driver Genes and Options for Targeted Therapy in Human-Papillomavirus-Positive Tonsillar and Base-of-Tongue Squamous Cell Carcinoma.

Viruses 2021 05 14;13(5). Epub 2021 May 14.

Department of Oncology-Pathology, Karolinska Institutet, Bioclinicum J6:20, Karolinska University Hospital, 171 64 Stockholm, Sweden.

The incidence of Human-papillomavirus-positive (HPV) tonsillar and base-of-tongue squamous cell carcinoma (TSCC and BOTSCC, respectively) is increasing epidemically, but they have better prognosis than equivalent HPV-negative (HPV) cancers, with roughly 80% vs. 50% 3-year disease-free survival, respectively. The majority of HPV TSCC and BOTSCC patients therefore most likely do not require the intensified chemoradiotherapy given today to head and neck cancer patients and would with de-escalated therapy avoid several severe side effects. Read More

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Cross-talk between hnRNP K and SET in ATRA-induced differentiation in acute promyelocytic leukemia.

FEBS Open Bio 2021 May 31. Epub 2021 May 31.

Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.

HnRNP K protein is a heterogeneous nuclear ribonucleoprotein which has been proposed to be involved in the leukemogenesis of acute promyelocytic leukemia (APL), as well as in differentiation induced by all-trans retinoic acid (ATRA). We previously demonstrated a connection between SET and hnRNP K function in head and neck squamous cell carcinoma (HNSCC) cells related to splicing processing. The objective of this study was to characterize the participation of hnRNP K and SET proteins in ATRA-induced differentiation in APL. Read More

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INI1-Deficient Thyroid Carcinoma is an Aggressive Disease with Epithelioid and Rhabdoid Phenotype. A Case Report, Survey of INI1 Expression in Thyroid Lesions and Literature Review.

Head Neck Pathol 2021 May 31. Epub 2021 May 31.

Department of Pathology, University at Buffalo, Buffalo, NY, USA.

Integrase interactor 1 (INI1)-deficient carcinomas, recently described in several sites including the head and neck, are associated with basaloid or rhabdoid histology and aggressive behavior irrespective of origin. INI1-deficient thyroid carcinoma is extremely rare. We present here the phenotype and genotype of an INI1-deficient thyroid carcinoma and report on the INI1 protein expression in various thyroid lesions. Read More

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Variation of PPARG Expression in Chemotherapy-Sensitive Patients of Hypopharyngeal Squamous Cell Carcinoma.

PPAR Res 2021 17;2021:5525091. Epub 2021 May 17.

Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.

Our previous study showed that the upregulation of peroxisome proliferator-activated receptor gamma (PPARG) could promote chemosensitivity of hypopharyngeal squamous cell carcinoma (HSCC) in chemotherapeutic treatments. Here, we acquired two more independent expression data of PPARG to validate the expression levels of PPARG in chemotherapy-sensitive patients (CSP) and its individualized variations compared to chemotherapy-non-sensitive patients (CNSP). Our results showed that overall PPARG expression was mildly downregulated (log fold change = -0. Read More

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tRNA inhibits proliferation and promotes apoptosis of laryngeal squamous cell carcinoma cells.

J Clin Lab Anal 2021 May 28:e23821. Epub 2021 May 28.

Department of Otorhinolaryngology, Head and Neck Surgery, The Affiliated LiHuili Hospital, Ningbo University, Ningbo, China.

Background: Laryngeal squamous cell carcinoma (LSCC) brings a heavy blow to the patient's voice. Transfer RNA (tRNA) is a common RNA, the roles of tRNAs in LSCC are largely unknown.

Methods: The tRNA expression profile in LSCC tissues and adjacent normal tissues was measured by a tRNA qRT-PCR array. Read More

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Robust expression of LINE-1 retrotransposon encoded proteins in oral squamous cell carcinoma.

BMC Cancer 2021 May 27;21(1):628. Epub 2021 May 27.

Department of Biotechnology, IIT Roorkee, Roorkee, Uttarakhand, India.

Background: Oral Squamous Cell Carcinoma (OSCC) results from a series of genetic alteration in squamous cells. This particular type of cancer considers one of the most aggressive malignancies to control because of its frequent local invasions to the regional lymph node. Although several biomarkers have been reported, the key marker used to predict the behavior of the disease is largely unknown. Read More

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DNA methylation association with stage progression of head and neck squamous cell carcinoma.

Comput Biol Med 2021 May 19;134:104473. Epub 2021 May 19.

Laboratory of Systems Biology and Bioinformatics (LBB), Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran. Electronic address: http://lbb.ut.ac.ir/.

Head and Neck Squamous Cell Carcinoma (HNSCC) is the sixth most common cancer worldwide, which accounts for approximately 6% of all cases and is responsible for an estimated 2% of all cancer deaths. Despite progress in the treatment of squamous cell carcinomas, survival rates remain low. It is a fact that epigenetic modifications have numerous associations with biological processes and complex diseases such as cancer. Read More

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A 28-year single institution experience with primary skin malignancies in the pediatric population.

J Plast Surg Hand Surg 2021 May 25:1-5. Epub 2021 May 25.

Division of Plastic Surgery, Mayo Clinic, Rochester, MN, USA.

The aim of this study is to report our institution's experience with pediatric skin malignancies. A single institution retrospective review of pediatric patients with a primary skin malignancy from 1992 to 2020 was performed. Demographics, tumor characteristics and treatment outcomes were reviewed. Read More

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A Standardized Framework for Fluorescence-Guided Margin Assessment for Head and Neck Cancer Using a Tumor Acidosis Sensitive Optical Imaging Agent.

Mol Imaging Biol 2021 May 24. Epub 2021 May 24.

Department of Oral & Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, PO Box 30.001, 9700, RB, Groningen, The Netherlands.

Purpose: Intra-operative management of the surgical margin in patients diagnosed with head and neck squamous cell carcinoma (HNSCC) remains challenging as surgeons still have to rely on visual and tactile information. Fluorescence-guided surgery using tumor-specific imaging agents can assist in clinical decision-making. However, a standardized imaging methodology is lacking. Read More

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IL-21 Is an Accomplice of PD-L1 in the Induction of PD-1-Dependent Treg Generation in Head and Neck Cancer.

Front Oncol 2021 5;11:648293. Epub 2021 May 5.

Department of Otorhinolaryngology Head and Neck Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.

Regulatory T cells (Tregs) are immunosuppressive cells involved in antitumor immunity. However, the regulation of Treg generation by inflammation in the tumor microenvironment has not been carefully investigated. Here, we demonstrated that IL-21-polarized inflammation was enriched in the tumor microenvironment in head and neck squamous cell carcinoma (HNSCC) and that IL-21 could promote PD-L1-induced Treg generation in a PD-1-dependent manner. Read More

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Immunomodulation of T Helper Cells by Tumor Microenvironment in Oral Cancer Is Associated With CCR8 Expression and Rapid Membrane Vitamin D Signaling Pathway.

Front Immunol 2021 7;12:643298. Epub 2021 May 7.

Molecular and Translational Immunology Laboratory, Clinical Biochemistry and Immunology Department, Pharmacy Faculty, Universidad de Concepción, Concepción, Chile.

The immune system plays a key role in the protective response against oral cancer; however, the tumor microenvironment (TME) impairs this anti-cancer response by modulating T helper (Th) responses and promoting an anti-inflammatory environment. Regulatory T cells (Tregs) and Th2 effector cells (Teff) are associated with poor prognosis in oral squamous cell carcinoma (OSCC). However, the main immunomodulatory mechanisms associated with the enrichment of these subsets in OSCC remain unknown. Read More

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Molecular alterations in oral cancer between tobacco chewers and smokers using serum proteomics.

Cancer Biomark 2021 May 14. Epub 2021 May 14.

Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka, India.

Background: Tobacco exposure (through smoking or chewing) is one of the predominant risk factors associated with the development of oral squamous cell carcinoma (OSCC). Despite the growing number of patients diagnosed with OSCC, there are few circulating biomarkers for identifying individuals at a higher risk of developing the disease. Successful identification of candidate molecular markers for risk assessment could aid in the early detection of oral lesions and potentially used for community screening of high-risk populations. Read More

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Docetaxel, cisplatin and 5-FU compared with docetaxel, cisplatin and cetuximab as induction chemotherapy in advanced squamous cell carcinoma of the head and neck: Results of a randomised phase II AGMT trial.

Eur J Cancer 2021 Jul 19;151:201-210. Epub 2021 May 19.

Paracelsus Medical University, Internal Medicine III, Hematology & Medical Oncology, Mu¨llner Hauptstraße 48, A-5020 Salzburg, Austria; Salzburg Cancer Research Institute-CCCIT and Cancer Cluster Salzburg, Austria.

Purpose: Induction chemotherapy (ICT) with cisplatin (P), 5-FU (F) and taxanes (T) is a therapeutical option in patients suffering from locally advanced or unresectable stage III or IV squamous cell carcinoma of the head and neck (SCCHN). The role of ICT is controversial, and toxicity and/or delay of radiotherapy (RT) may reduce the potential benefit of this treatment regimen. Here, we report the results of a randomised phase II trial comparing TPF with TP + cetuximab (C). Read More

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Cortactin expression assessment improves patient selection for a watchful waiting strategy in pT1cN0-staged oral squamous cell carcinomas with a tumor infiltration depth below 4 mm.

Head Neck 2021 May 19. Epub 2021 May 19.

Department of Pathology & Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.

Background: In this feasibility study we aimed to evaluate the value of previously reported molecular tumor biomarkers associated with lymph node metastasis in oral squamous cell carcinoma (OSCC) to optimize neck strategy selection criteria.

Methods: The association between expression of cortactin, cyclin D1, FADD, RAB25, and S100A9 and sentinel lymph node status was evaluated in a series of 87 (cT1-2N0) patients with OSCC treated with primary resection and SLNB procedure.

Results: Tumor infiltration depth and tumor pattern of invasion were independent prognostic markers for SLN status, while none of the tumor makers showed a better prognostic value to replace SLNB as neck staging technique in the total cohort. Read More

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The LncRNA FGD5-AS1/miR-497-5p axis regulates septin 2 (SEPT2) to accelerate cancer progression and increase cisplatin-resistance in laryngeal squamous cell carcinoma.

Mol Carcinog 2021 Jul 18;60(7):469-480. Epub 2021 May 18.

Department of Head and Neck Surgery, Hunan Cancer Hospital, Changsha, Hunan, China.

Aberrant expression or mutation of the Septin gene family is closely associated with cancer progression, and septin 2 (SEPT2) exerts its tumor-promoting effects in multiple cancers, but its role in regulating laryngeal squamous cell carcinoma (LSCC) progression and drug resistance has not been investigated. Based on the published data, the present study identified that SEPT2 promoted cancer progression and increased cisplatin-resistance in LSCC, and a novel LncRNA FGD5-AS1/miR-497-5p axis was crucial for this process. Mechanistically, SEPT2 tended to be enriched in LSCC tissues and cells, and knock-down of SEPT2 inhibited cell proliferation, viability, migration, and tumorigenesis in LSCC cells in vitro and in vivo. Read More

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The Potential of MET Immunoreactivity for Prediction of Lymph Node Metastasis in Early Oral Tongue Squamous Cell Carcinoma.

Front Oncol 2021 29;11:638048. Epub 2021 Apr 29.

Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC, University Medical Center Rotterdam, Cancer Institute, Rotterdam, Netherlands.

Objective: MET positivity is independently associated with survival in oral squamous cell carcinoma (OSCC). Since MET is a known orchestrator of invasive tumor growth, we investigated its association with LNM in early oral tongue squamous cell carcinoma (OTSCC). As it is recommended by the NCCN to use tumor depth of invasion (DOI) in making decisions on elective neck dissection (END), the results obtained for MET positivity were aligned with those for DOI > 4 mm. Read More

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