scholarly journals Heat Shock Protein 27 as a New Therapeutic Target for Radiation Sensitization of Head and Neck Squamous Cell Carcinoma

2009 ◽  
Vol 17 (8) ◽  
pp. 1387-1394 ◽  
Author(s):  
Elie Hadchity ◽  
Marie-Thérèse Aloy ◽  
Christian Paulin ◽  
Emma Armandy ◽  
Emmanuel Watkin ◽  
...  
1998 ◽  
Vol 118 (5) ◽  
pp. 610-624 ◽  
Author(s):  
Regina Gandour-Edwards ◽  
Bruce J. Trock ◽  
Paul Gumerlock ◽  
Paul J. Donald

BACKGROUND: Heat shock proteins have been associated with the mutant form of the tumor suppressor gene, TP53, and with resistance to cancer chemotherapy. METHODS: Archival tissues from 50 patients with head and neck squamous cell carcinoma who received primary surgical resection were examined for p53, HSP27, and HSP70 by immunohistochemistry and correlated with tumor stage, grade, and 5-year survival (alive or deceased). RESULTS: Both heat shock proteins were strongly expressed in normal mucosa and in small (T1 and T2) tumors. Thirty (60%) of tumors were positive for p53, 43 (86%) for HSP27, and 34 (68%) for HSP70, with no association between p53 and heat shock protein expression. Twenty-five patients were alive (4 with disease), and 25 patients were deceased (9 from other causes). p53 Protein overexpression correlated with low-grade tumors. Only primary tumor site (i.e., oral cavity > larynx > oropharynx/base of tongue) and N stage were significantly associated with survival. CONCLUSIONS: Heat shock proteins are expressed in normal upper respiratory tract squamous mucosa, and their role in carcinoma remains unclear. None of the markers, p53, HSP27, or HSP70, demonstrated prognostic significance for 5-year survival. We confirm the recognized association of cervical lymph node metastases with decreased survival. (Otolaryngol Head Neck Surg 1998;118:610–5.)


1998 ◽  
Vol 118 (5) ◽  
pp. 610-615 ◽  
Author(s):  
REGINA GANDOUR-EDWARDS ◽  
BRUCE J. TROCK ◽  
PAUL GUMERLOCK ◽  
PAUL J. DONALD

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Aneesha Radhakrishnan ◽  
Vishalakshi Nanjappa ◽  
Remya Raja ◽  
Gajanan Sathe ◽  
Vinuth N. Puttamallesh ◽  
...  

Abstract Despite advances in clinical management, 5-year survival rate in patients with late-stage head and neck squamous cell carcinoma (HNSCC) has not improved significantly over the past decade. Targeted therapies have emerged as one of the most promising approaches to treat several malignancies. Though tyrosine phosphorylation accounts for a minority of total phosphorylation, it is critical for activation of signaling pathways and plays a significant role in driving cancers. To identify activated tyrosine kinase signaling pathways in HNSCC, we compared the phosphotyrosine profiles of a panel of HNSCC cell lines to a normal oral keratinocyte cell line. Dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 1A (DYRK1A) was one of the kinases hyperphosphorylated at Tyr-321 in all HNSCC cell lines. Inhibition of DYRK1A resulted in an increased apoptosis and decrease in invasion and colony formation ability of HNSCC cell lines. Further, administration of the small molecular inhibitor against DYRK1A in mice bearing HNSCC xenograft tumors induced regression of tumor growth. Immunohistochemical labeling of DYRK1A in primary tumor tissues using tissue microarrays revealed strong to moderate staining of DYRK1A in 97.5% (39/40) of HNSCC tissues analyzed. Taken together our results suggest that DYRK1A could be a novel therapeutic target in HNSCC.


2014 ◽  
Author(s):  
Ryuichi Murase ◽  
Sean McAllister ◽  
Yohei Fujita ◽  
Tomoki Sumida ◽  
Koichi Nakashiro ◽  
...  

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