Expression of TGFβ-1 and EHD1 correlated with survival of non-small cell lung cancer

Tumour Biol. 2014 Sep;35(9):9371-80. doi: 10.1007/s13277-014-2164-x. Epub 2014 Jun 20.

Abstract

Transforming growth factor-β1 (TGFβ-1) signaling is regulated by endocytotic pathway. To clarify the prognostic value of TGFβ-1 and to verify the involvement of endocytosis in drug resistance, we examined the expression of TGFβ-1 and Eps15 homology domain 1 (EHD1) in non-small cell lung cancer (NSCLC) and its association with tumor characteristics and survival of patients with NSCLC. Expression of TGFβ-1 and EHD1 was evaluated by immunohistochemistry in paraffin sections from 105 NSCLC patients. Overall survival (OS) was analyzed by Kaplan-Meier method, log-rank test, and multivariate Cox proportional hazard regression model. Positive immunostaining of TGFβ-1 and EHD1 was detected in 52.38 and 39.05 % of NSCLC samples, respectively. In non-adjuvant chemotherapy-treated group (P = 0.006) and epidermal growth factor receptor (EGFR) (+) group (P = 0.038), patients with TGFβ-1 expression had a longer OS. EHD1 negative expression predicted a longer OS (P = 0.003), especially in EGFR (+) (P = 0.006) and adjuvant chemotherapy-treated patients (P = 0.003). NSCLC patients with concurrent positive TGFβ-1 and negative EHD1 (combined markers) were significantly correlated with better OS (P = 0.001). American Joint Committee on Cancer (AJCC) status and combined markers were independent prognostic indicators for OS (HR (95 % CI) 1.576 (1.112-2.232), P = 0.011 and HR 0.349 (0.180-0.673), P = 0.002, respectively). We identified concordant TGFβ-1 positive and EHD1 negative as a strong favorable prognosis factor in NSCLC. Our results may help us to select and optimize strategies for individualized therapy.

MeSH terms

  • Carcinoma, Non-Small-Cell Lung / drug therapy
  • Carcinoma, Non-Small-Cell Lung / metabolism*
  • Carcinoma, Non-Small-Cell Lung / surgery
  • Chemotherapy, Adjuvant
  • Combined Modality Therapy
  • Female
  • Follow-Up Studies
  • Humans
  • Immunohistochemistry
  • Kaplan-Meier Estimate
  • Lung Neoplasms / drug therapy
  • Lung Neoplasms / metabolism*
  • Lung Neoplasms / surgery
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Outcome Assessment, Health Care / statistics & numerical data
  • Prognosis
  • Proportional Hazards Models
  • Transforming Growth Factor beta1 / biosynthesis*
  • Vesicular Transport Proteins / biosynthesis*

Substances

  • EHD1 protein, human
  • Transforming Growth Factor beta1
  • Vesicular Transport Proteins