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Review
. 2023 Dec 19:13:1247399.
doi: 10.3389/fonc.2023.1247399. eCollection 2023.

Panoramic view of key cross-talks underpinning the oral squamous cell carcinoma stemness - unearthing the future opportunities

Affiliations
Review

Panoramic view of key cross-talks underpinning the oral squamous cell carcinoma stemness - unearthing the future opportunities

Soujanya J Vastrad et al. Front Oncol. .

Abstract

The clinical management of oral cancer is often frequented with challenges that arise from relapse, recurrence, invasion and resistance towards the cornerstone chemo and radiation therapies. The recent conceptual advancement in oncology has substantiated the role of cancer stem cells (CSC) as a predominant player of these intricacies. CSC are a sub-group of tumor population with inherent adroitness to self-renew with high plasticity. During tumor evolution, the structural and functional reprogramming persuades the cancer cells to acquire stem-cell like properties, thus presenting them with higher survival abilities and treatment resistance. An appraisal on key features that govern the stemness is of prime importance to confront the current challenges encountered in oral cancer. The nurturing niche of CSC for maintaining its stemness characteristics is thought to be modulated by complex multi-layered components encompassing neoplastic cells, extracellular matrix, acellular components, circulatory vessels, various cascading signaling molecules and stromal cells. This review focuses on recapitulating both intrinsic and extrinsic mechanisms that impart the stemness. There are contemplating evidences that demonstrate the role of transcription factors (TF) in sustaining the neoplastic stem cell's pluripotency and plasticity alongside the miRNA in regulation of crucial genes involved in the transformation of normal oral mucosa to malignancy. This review illustrates the interplay between miRNA and various known TF of oral cancer such as c-Myc, SOX, STAT, NANOG and OCT in orchestrating the stemness and resistance features. Further, the cross-talks involved in tumor micro-environment inclusive of cytokines, macrophages, extra cellular matrix, angiogenesis leading pathways and influential factors of hypoxia on tumorigenesis and CSC survival have been elucidated. Finally, external factorial influence of oral microbiome gained due to the dysbiosis is also emphasized. There are growing confirmations of the possible roles of microbiomes in the progression of oral cancer. Given this, an attempt has been made to explore the potential links including EMT and signaling pathways towards resistance and stemness. This review provides a spectrum of understanding on stemness and progression of oral cancers at various regulatory levels along with their current therapeutic knowledge. These mechanisms could be exploited for future research to expand potential treatment strategies.

Keywords: cancer stem cell niche; miRNA; oral cancer; oral microbiota; oral squamous cell carcinoma; stemness; transcription factor; tumor microenvironment.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Depicts TFs-miRNA network. TF-miRNA network in Oral Cancer: Regulation of key transcription factors (SOX4, SOX2, Nanog, STAT3, and cMyc, red circle) by the indicated miRNAs. Color code (Magenta- inhibitory; Green-stimulatory; Yellow-unknown) indicates role of the miRNA on TF expression. Arrowhead: ↑ points the direction of the effect.
Figure 2
Figure 2
Illustrates the mediators and pathways governing oral tumorigenesis and stemness in the TME. Cross talks in Oral CSC niche: Recruitment of fibroblasts, growth factors, determinants of EMT, inflammatory and immune components from TME; hypoxic features; angiogenesis mechanism; mediators and pathways governing oral tumorigenesis and stemness in the TME.
Figure 3
Figure 3
Demonstrates the mechanisms of selected oral microbes in oral tumorigenesis and stemness. The possible mechanisms by which oral bacteria contribute to oral carcinogenesis and stemness; Color code of mechanism representation: Porphyromonas gingivalis mechanism (purple color), Streptococcus mutans (teal blue), Human papillomavirus (orange), Epstein-Barr virus (magenta).

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References

    1. Chai AWY, Lim KP, Cheong SC. Translational genomics and recent advances in oral squamous cell carcinoma. Semin Cancer Biol (2020) 61:71–83. doi: 10.1016/j.semcancer.2019.09.011 - DOI - PubMed
    1. (2023). Available at: https://www.wcrf.org/cancer-trends/mouth-and-oral-cancer-statistics/.
    1. Jain M. Assesment of correlation of herpes simplex virus-1 with oral cancer and precancer- A comparative study. J Clin Diagn Res (2016) 10(8):ZC14–7. doi: 10.7860/JCDR/2016/18593.8229 - DOI - PMC - PubMed
    1. Vadovics M, Ho J, Igaz N, Alföldi R, Rakk D, Veres É, et al. . Candida albicans enhances the progression of oral squamous cell carcinoma in vitro and in vivo . In: McCullough MJ, Lorenz M, editors. MBio (United States: American Society for Microbiology; ) (2021) 13(1):e0314421. - PMC - PubMed
    1. Patel S, Sakthivel P, Singh I, Gulati A GD. Frequency of skip metastases in oral cancer: an overview. Int J Otolaryngol Head Neck Surg (2015) 6(2):80–5. doi: 10.5005/JP-JOURNALS-10001-1228 - DOI

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