Gallium in cancer treatment

Area of Science:

• Oncology
• Medicinal Chemistry
• Biochemistry

Background:

• Gallium (Ga) is a metal ion investigated for cancer treatment, following platinum.
• Ga exhibits diverse anticancer activities, including DNA and protein synthesis inhibition.
• Ga affects cellular processes like enzyme activity, membrane permeability, and mitochondrial function.

Purpose of the Study:

• To review the anticancer activities and therapeutic potential of gallium (Ga).
• To explore novel gallium compounds and their administration routes.
• To assess gallium's toxicity, synergistic effects, and clinical relevance.

Main Methods:

• Literature review of gallium's biochemical mechanisms and pharmacological effects.
• Analysis of in vitro and in vivo studies on gallium's efficacy and toxicity.
• Examination of clinical investigations and novel gallium compound development.

Main Results:

• Gallium inhibits DNA/protein synthesis, modulates enzyme activity, and alters cellular functions.
• Oral Ga administration enhances tumor uptake and bioavailability with reduced toxicity compared to parenteral routes.
• New compounds like Ga maltolate and doxorubicin-Ga-transferrin conjugate show promise.
• Gallium demonstrates anticancer activity, bone effects beneficial for metastases, and potential for tumor fibrosis with chronic use.
• Synergistic effects with other anticancer drugs are observed.

Conclusions:

• Gallium (Ga) possesses significant anticancer properties and therapeutic potential, particularly via oral administration.
• Further optimization of administration schedules and development of new Ga compounds are crucial for clinical application.
• Gallium's unique effects on bone and potential synergy warrant continued investigation in cancer therapy.