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  • 1
    Publication Date: 2011-07-30
    Description: Head and neck squamous cell carcinoma (HNSCC) is a common, morbid, and frequently lethal malignancy. To uncover its mutational spectrum, we analyzed whole-exome sequencing data from 74 tumor-normal pairs. The majority exhibited a mutational profile consistent with tobacco exposure; human papillomavirus was detectable by sequencing DNA from infected tumors. In addition to identifying previously known HNSCC genes (TP53, CDKN2A, PTEN, PIK3CA, and HRAS), our analysis revealed many genes not previously implicated in this malignancy. At least 30% of cases harbored mutations in genes that regulate squamous differentiation (for example, NOTCH1, IRF6, and TP63), implicating its dysregulation as a major driver of HNSCC carcinogenesis. More generally, the results indicate the ability of large-scale sequencing to reveal fundamental tumorigenic mechanisms.〈br /〉〈br /〉〈a href="" target="_blank"〉〈img src="" border="0"〉〈/a〉   〈a href="" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stransky, Nicolas -- Egloff, Ann Marie -- Tward, Aaron D -- Kostic, Aleksandar D -- Cibulskis, Kristian -- Sivachenko, Andrey -- Kryukov, Gregory V -- Lawrence, Michael S -- Sougnez, Carrie -- McKenna, Aaron -- Shefler, Erica -- Ramos, Alex H -- Stojanov, Petar -- Carter, Scott L -- Voet, Douglas -- Cortes, Maria L -- Auclair, Daniel -- Berger, Michael F -- Saksena, Gordon -- Guiducci, Candace -- Onofrio, Robert C -- Parkin, Melissa -- Romkes, Marjorie -- Weissfeld, Joel L -- Seethala, Raja R -- Wang, Lin -- Rangel-Escareno, Claudia -- Fernandez-Lopez, Juan Carlos -- Hidalgo-Miranda, Alfredo -- Melendez-Zajgla, Jorge -- Winckler, Wendy -- Ardlie, Kristin -- Gabriel, Stacey B -- Meyerson, Matthew -- Lander, Eric S -- Getz, Gad -- Golub, Todd R -- Garraway, Levi A -- Grandis, Jennifer R -- P50 CA097190/CA/NCI NIH HHS/ -- R01 CA077308/CA/NCI NIH HHS/ -- R01 CA098372/CA/NCI NIH HHS/ -- UL1 TR000005/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Aug 26;333(6046):1157-60. doi: 10.1126/science.1208130. Epub 2011 Jul 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Apoptosis ; Carcinoma/*genetics/metabolism/virology ; Carcinoma, Squamous Cell ; Cell Differentiation ; Exons ; Head and Neck Neoplasms/*genetics/metabolism/virology ; Humans ; *Mutation ; Neoplasms, Squamous Cell/*genetics/metabolism/virology ; Papillomaviridae/isolation & purification ; Papillomavirus Infections/virology ; Point Mutation ; Receptor, Notch1/*genetics/metabolism ; *Sequence Analysis, DNA ; Sequence Deletion ; Signal Transduction ; Smoking ; Tobacco
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2018-01-16
    Description: Salivary gland acinar cells are routinely destroyed during radiation treatment for head and neck cancer that results in a lifetime of hyposalivation and co-morbidities. A potential regenerative strategy for replacing injured tissue is the reactivation of endogenous stem cells by targeted therapeutics. However, the identity of these cells, whether they are capable of regenerating the tissue, and the mechanisms by which they are regulated are unknown. Using in vivo and ex vivo models, in combination with genetic lineage tracing and human tissue, we discover a SOX2 + stem cell population essential to acinar cell maintenance that is capable of replenishing acini after radiation. Furthermore, we show that acinar cell replacement is nerve dependent and that addition of a muscarinic mimetic is sufficient to drive regeneration. Moreover, we show that SOX2 is diminished in irradiated human salivary gland, along with parasympathetic nerves, suggesting that tissue degeneration is due to loss of progenitors and their regulators. Thus, we establish a new paradigm that salivary glands can regenerate after genotoxic shock and do so through a SOX2 nerve-dependent mechanism. Salivary glands regenerate after radiation injury through SOX2-mediated secretory acinar cell replacement as shown using genetic lineage tracing and ablation methods, in combination with in vivo and ex vivo gamma radiation-induced damage models.
    Print ISSN: 1757-4676
    Electronic ISSN: 1757-4684
    Topics: Medicine
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