scholarly journals Emerging Role of Autophagy in the Development and Progression of Oral Squamous Cell Carcinoma

Cancers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 6152
Author(s):  
Yomna S. Abd El-Aziz ◽  
Lionel Y. W. Leck ◽  
Patric J. Jansson ◽  
Sumit Sahni
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Cancer Progression ◽  
Squamous Cell ◽  
Nutrient Deprivation ◽  
Therapeutic Approaches ◽  
Cancer Types ◽  
Catabolic Process

Autophagy is a cellular catabolic process, which is characterized by degradation of damaged proteins and organelles needed to supply the cell with essential nutrients. At basal levels, autophagy is important to maintain cellular homeostasis and development. It is also a stress responsive process that allows the cells to survive when subjected to stressful conditions such as nutrient deprivation. Autophagy has been implicated in many pathologies including cancer. It is well established that autophagy plays a dual role in different cancer types. There is emerging role of autophagy in oral squamous cell carcinoma (OSCC) development and progression. This review will focus on the role played by autophagy in relation to different aspects of cancer progression and discuss recent studies exploring the role of autophagy in OSCC. It will further discuss potential therapeutic approaches to target autophagy in OSCC.

scholarly journals The Role of Sonic Hedgehog Signaling in the Tumor Microenvironment of Oral Squamous Cell Carcinoma

2019 ◽  
Vol 20 (22) ◽  
pp. 5779 ◽  
Author(s):  
Kiyofumi Takabatake ◽  
Tsuyoshi Shimo ◽  
Jun Murakami ◽  
Chang Anqi ◽  
Hotaka Kawai ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Tumor Microenvironment ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Sonic Hedgehog ◽  
Cancer Progression ◽  
Squamous Cell ◽  
Smooth Muscle Actin ◽  
Shh Pathway

Sonic hedgehog (SHH) and its signaling have been identified in several human cancers, and increased levels of SHH expression appear to correlate with cancer progression. However, the role of SHH in the tumor microenvironment (TME) of oral squamous cell carcinoma (OSCC) is still unclear. No studies have compared the expression of SHH in different subtypes of OSCC and focused on the relationship between the tumor parenchyma and stroma. In this study, we analyzed SHH and expression of its receptor, Patched-1 (PTCH), in the TME of different subtypes of OSCC. Fifteen endophytic-type cases (ED type) and 15 exophytic-type cases (EX type) of OSCC were used. H&E staining, immunohistochemistry (IHC), double IHC, and double-fluorescent IHC were performed on these samples. ED-type parenchyma more strongly expressed both SHH and PTCH than EX-type parenchyma. In OSCC stroma, CD31-positive cancer blood vessels, CD68- and CD11b-positive macrophages, and α-smooth muscle actin-positive cancer-associated fibroblasts partially expressed PTCH. On the other hand, in EX-type stroma, almost no double-positive cells were observed. These results suggest that autocrine effects of SHH induce cancer invasion, and paracrine effects of SHH govern parenchyma-stromal interactions of OSCC. The role of the SHH pathway is to promote growth and invasion.

scholarly journals The Emerging Role of Exosomes in Oral Squamous Cell Carcinoma

2021 ◽  
Vol 9 ◽  
Author(s):  
Yanhui Lu ◽  
Zhichao Zheng ◽  
Yunyi Yuan ◽  
Janak L. Pathak ◽  
Xuechao Yang ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Cancer Progression ◽  
Squamous Cell ◽  
High Rate ◽  
Circular Rnas ◽  
Target Cells ◽  
Non Coding Rnas

Oral cancer constitutes approximately 2% of all cancers, while the most common type, oral squamous cell carcinoma (OSCC) represents 90% of oral cancers. Although the treatment of OSCC has improved recently, it still has a high rate of local recurrence and poor prognosis, with a 5-year survival rate of only 50%. Advanced stage OSCC tends to metastasize to lymph nodes. Thus, exploring new therapeutic strategies for OSCC is therefore an urgent priority. Exosomes, the small membrane vesicles derived from endosomes, have been detected in a wide array of bodily fluids. Exosomes contain a diversity of proteins, mRNAs, and non-coding RNAs, including microRNAs, long non-coding RNAs, piRNAs, circular RNAs, tsRNAs, and ribosomal RNAs, which are delivered to neighboring cells or even transported to distant sites. Exosomes have been associated with the tumorigenesis of OSCC, promote the proliferation, colonization, and metastasis of OSCC by transferring their contents to the target cells. Furthermore, exosomes are involved in the regulation of the tumor microenvironment to transform conditions favoring cancer progression in vivo. In this review, we summarize the crucial role of exosomes in the tumorigenesis and progression of OSCC and discuss the potential clinical application of exosomes in OSCC treatment.

Rediscussing the Role of Traditional Risk Factors in Young Adults With Oral Squamous Cell Carcinoma

2020 ◽  
Vol 40 (12) ◽  
pp. 6987-6995
Author(s):  
NORBERT NECKEL ◽  
MARCO MICHAEL ◽  
DANIEL TROELTZSCH ◽  
JONAS WÜSTER ◽  
STEFFEN KOERDT ◽  
...  
Keyword(s):  
Risk Factors ◽  
Squamous Cell Carcinoma ◽  
Young Adults ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Traditional Risk Factors

scholarly journals PDIA6 contributes to aerobic glycolysis and cancer progression in oral squamous cell carcinoma

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Ling Mao ◽  
Xiaoweng Wu ◽  
Zhengpeng Gong ◽  
Ming Yu ◽  
Zhi Huang
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Growth ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Expression Pattern ◽  
Cancer Progression ◽  
Squamous Cell ◽  
Aerobic Glycolysis ◽  
Lactate Production ◽  
Control Group

Abstract Background/objective Accumulated evidence has demonstrated that aerobic glycolysis serves as a regulator of tumor cell growth, invasion, and angiogenesis. Herein, we explored the role of protein disulfide isomerase family 6 (PDIA6) in the aerobic glycolysis and the progression of oral squamous cell carcinoma (OSCC). Methods The expression pattern of PDIA6 in OSCC tissues was determined by qPCR and western blotting. Lentivirus and small interfering RNAs (siRNAs) were introduced into cells to upregulate and downregulate PDIA6 expression. CCK-8, flow cytometry, transwell, and xenotransplantation models were applied to detect cell proliferation, apoptosis, migration, invasion, and tumorigenesis, respectively. Results A high expression pattern of PDIA6 was observed in OSCC tissues, which was closely associated with lower overall survival and malignant clinical features in OSCC. Compared with the control group, overexpression of PDIA6 induced significant enhancements in cell growth, migration, invasiveness, and tumorigenesis and decreased cell apoptosis, while knockdown of PDIA6 caused opposite results. In addition, overexpression of PDIA6 increased glucose consumption, lactate production, and ATP level in OSCC cells. Conclusion This study demonstrated that PDIA6 expression was elevated in OSCC tissues, and overexpression of it promoted aerobic glycolysis and OSCC progression.

scholarly journals Role of viruses in oral squamous cell carcinoma

2012 ◽  
Vol 6 (2) ◽  
pp. 21 ◽  
Author(s):  
Rashmi Metgud ◽  
Madhusudan Astekar ◽  
Meenal Verma ◽  
Ashish Sharma
Keyword(s):  
Risk Factors ◽  
Squamous Cell Carcinoma ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Genetic Susceptibility ◽  
Squamous Cell ◽  
Oncogenic Viruses ◽  
Exact Role ◽  
Carcinogenic Effects

The etiology of oral squamous cell carcinoma (OSCC) is complex and involves many factors. The most clearly defined risk factors are smoking and alcohol, which substantially increase the risk of oral SCC. However, despite this clear association, a substantial proportion of patients develop OSCC without exposure to them, emphasizing the role of other risk factors such as genetic susceptibility and oncogenic viruses. Some viruses are strongly associated with OSCC while the association of others is less frequent and may depend on co-factors for their carcinogenic effects. Therefore, the exact role of viruses must be evaluated with care in order to improve the diagnosis and treatment of OSCC.

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