Elemental profiles in distant tissues during tumor progression

Area of Science:

• Oncology
• Biochemistry
• Metallomics

Background:

• Essential elements play crucial roles in cellular processes like proliferation and migration, influencing tumor progression.
• Understanding the relationship between essential elements and tumor progression is vital for cancer research.
• Elemental profiles in distant tissues, which can be affected by tumor cells to promote metastasis, require further investigation.

Purpose of the Study:

• To evaluate the multielemental distribution during tumor progression.
• To focus on elemental changes in both primary tumor tissue and potentially affected distant tissues.

Main Methods:

• In vivo tumor progression was simulated using Lewis Lung Carcinoma (LLC) cells in C57BL/6 mice.
• Samples from primary tumors and distant tissues were collected over 5 weeks.
• Synchrotron radiation X-ray fluorescence was used to analyze concentrations of P, S, K, Ca, Mn, Fe, Cu, and Zn.

Main Results:

• Significant alterations in the distribution of P, S, K, Ca, Mn, Fe, and Cu were observed in distant tissues due to tumor presence.
• An unprecedented similarity in elemental profiles was found between primary tumor tissue and non-origin tissues like the liver.
• Changes in elemental concentrations were tracked over time in primary tumors, liver, and lung tissues for both control and tumor-bearing groups.

Conclusions:

• The study demonstrated that primary tumors can modulate distant tissues through alterations in essential element concentrations.
• Analyzing key elements provides insights into biological processes involved in cancer.
• This research contributes to the field of tumoral metallomics by highlighting the role of essential elements in modulating the tumor microenvironment.