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Correlation between the expression of Id-1 and hyperthermia-associated molecules in oral squamous cell carcinoma
  1. Jun Zhao1,
  2. Shengzhi Wang2,
  3. Na Liu1,
  4. Xiufa Tang1
  1. 1State Key Laboratory of Oral Diseases in Sichuan University, Sichuan, China
  2. 2Department of Oral and Maxillofacial Surgery, Yantai Yuhuangding Hospital, Yantai, China
  1. Correspondence to Dr Xiufa Tang, State Key Laboratory of Oral Diseases in Sichuan University, Department of Head and Neck Carcinoma, West China College of Stomatology in Sichuan University, No 14, Section 3, Renmin South Road, Chengdu, Sichuan, China; tangxf1963{at}


Objective To investigate the expression of inhibitor of differentiation/DNA binding (Id-1), phosphatidylinositol-3-kinase/protein kinase B pathway proteins and hyperthermia-associated protein and their association with various clinicopathological factors in oral squamous cell cancer (OSCC), and explore the relationship among them in OSCC.

Methods Id-1, phosphorylated protein kinase B (p-Akt), phosphorylated glycogen synthase kinase 3β (p-GSK3β) and phosphorylated heat shock factor 1 (p-HSF1) expression were assessed immunohistochemically in 76 OSCC.

Results Id-1 (73.8%), p-Akt (65.8%), p-GSK3β (60.5%) and p-HSF1 (75%) were found to be overexpressed in most of the oral cancer samples tested, and the expressions of them are correlated with advanced clinical stage, metastasis and recurrence (p<0.01), but there is no apparent relationship with gender, age, differentiation and habits (p>0.05). Survival curves show that the survival of patients with high Id-1, p-Akt, p-GSK3β and p-HSF1 expression was significantly worse than those with low Id-1, p-Akt, p-GSK3β and p-HSF1 expression (p=0.000). Id-1 expression was significantly higher in cases with high expression of p-Akt, p-GSK3β and p-HSF1 than in those with low expression (p=0.002, p=0.003, p=0.001).

Conclusions This study revealed that there was a positive correlation between Id-1 expression and the expression of p-Akt, p-GSK3β and p-HSF1. The inhibition of Id-1 expression can improve the efficacy of hyperthermia in OSCC.

  • Cancer
  • cancer research
  • head and neck cancer
  • Id-1
  • immunohistochemistry
  • inhibitor of differentiation/DNA binding
  • phosphorylated Akt
  • phosphorylated GSK3β
  • phosphorylated HSF1

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  • Competing interests None declared.

  • Patient consent Obtained.

  • Ethics approval This protocol was performed in accordance with the precepts established by the Helsinki declaration and has been approved by the Human Investigation Committee of Sichuan University.

  • Provenance and peer review Not commissioned; externally peer reviewed.