Molecular Imaging of IGF-1R in Cancer

Area of Science:

• Oncology
• Molecular Imaging
• Biochemistry

Background:

• Insulin-like growth factor 1 receptor (IGF-1R) plays a key role in malignant tumors, promoting proliferation, migration, invasion, metastasis, and treatment resistance.
• Increased IGF-1R activity is linked to poor prognosis and reduced survival in cancer patients.
• IGF-1R-targeted therapies show promise but are ineffective in unselected patients, necessitating predictive biomarkers.

Purpose of the Study:

• To review the current status of IGF-1R molecular imaging in cancer.
• To discuss various ligand classes developed for noninvasive IGF-1R molecular imaging.
• To highlight the importance of evaluating IGF-1R expression for personalized cancer therapy.

Main Methods:

• Review of scientific literature on IGF-1R molecular imaging in cancer.
• Discussion of five major classes of ligands used for IGF-1R imaging: natural ligands, monoclonal antibodies, antibody fragments, affibodies, and small molecules.
• Focus on noninvasive in vivo assessment of IGF-1R expression.

Main Results:

• IGF-1R molecular imaging is an optimal method for accurate and noninvasive assessment of IGF-1R expression in vivo.
• Development of diverse ligand classes enables various approaches for IGF-1R molecular imaging.
• The review summarizes the current landscape of IGF-1R molecular imaging strategies.

Conclusions:

• Evaluating IGF-1R expression via molecular imaging is essential for patient selection, therapy monitoring, and prognosis estimation in cancer.
• IGF-1R molecular imaging facilitates personalized treatment strategies.
• Continued research and development in IGF-1R molecular imaging are needed for future advancements in cancer therapy.