4.5 Article

DUAL INHIBITION OF EPIDERMAL GROWTH FACTOR RECEPTOR AND INSULIN-LIKE GROWTH FACTOR RECEPTOR I: REDUCTION OF ANGIOGENESIS AND TUMOR GROWTH IN CUTANEOUS SQUAMOUS CELL CARCINOMA

Publisher

WILEY
DOI: 10.1002/hed.21419

Keywords

insulin-like growth factor-I receptor (IGF-IR); epidermal growth factor receptor (EGFR); squamous cell carcinoma; orthotopic model; preclinical study

Funding

  1. M. D. Anderson Cancer Center Specialized Program in Research Excellence in Head and Neck Cancer [P50 (CA097007)]
  2. National Institutes of Health Cancer Center [CA016672]
  3. PANTHEON
  4. Eli Lilly and company

Ask authors/readers for more resources

Background. Cutaneous squamous cell carcinoma (CSCC) is the second most common nonmelanoma skin cancer. Most of the approximately 250,000 cases occurring annually in the United States are small, nonaggressive, and cured by excision alone. However, a subset of these tumors which are defined by poorly differentiated histology, large tumor size, invasion of adjacent structures, and/or regional metastases can prove resistant to treatment despite adjuvant radiotherapy and can have an increased risk of recurrence and nodal metastasis. Novel therapeutic approaches are necessary to improve the outcomes for patients with aggressive CSCC. Methods. We analyzed the effect of targeted therapy on the growth and survival of CSCC cell lines using an anti-insulin-like growth factor-I receptor (IGF-IR) antibody, A12, alone or in combination with an anti-epidermal growth factor receptor (EGFR) antibody, cetuximab, both in vitro and in vivo in an athymic nude mouse model of CSCC. Results. Treatment with A12 and cetuximab inhibited the signaling pathways of IGF-IR and EGFR and inhibited proliferation and induced apoptosis of squamous cell carcinoma (SCC) cell lines in vitro. Immunohistochemical staining revealed decreased proliferating cell nuclear antigen (PCNA), microvessel density, and increased apoptosis within the treated tumor xenografts. In addition, the administration of A12, alone or in combination with cetuximab inhibited the growth of tumors by 51% and 92%, respectively, and significantly enhanced survival in the nude mouse model of CSCC (p=.044 and p <.001, respectively). Conclusion. These data suggest that dual treatment with monoclonal antibodies to the EGFR and IGF-IR may be therapeutically useful in the treatment of CSCC. (C) 2010 Wiley Periodicals, Inc. Head Neck 33: 189-198, 2011

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available