NEROFE--a novel human hormone-peptide with anti-cancer activity

Area of Science:

• Immunology
• Molecular Biology
• Oncology

Background:

• The thymus gland plays a crucial role in immune system development, particularly in T-cell maturation.
• Apoptosis, or programmed cell death, is a critical process for maintaining tissue homeostasis and eliminating damaged or infected cells.
• Cancer cells often evade apoptosis, contributing to tumor growth and metastasis.

Purpose of the Study:

• To identify and characterize a novel protein involved in apoptosis.
• To investigate the mechanism of action and therapeutic potential of this new factor in cancer treatment.
• To explore the role of the T1/ST2 receptor in mediating apoptosis.

Main Methods:

• Isolation and characterization of a novel protein, Tumor-Cells Apoptosis Factor (TCApF).
• Immunohistochemical analysis to determine TCApF expression in human tissues.
• In vitro studies using various cancer cell lines and in vivo studies in mice with induced acute myeloid leukemia (AML).
• Analysis of apoptosis-related signaling pathways, including caspase activation and kinase activity.

Main Results:

• TCApF is expressed in the human thymus, colon, and brain, localizing to specific thymic structures involved in immune regulation.
• TCApF treatment eradicated cancer development and eliminated metastatic colonies in AML mouse models.
• TCApF induces apoptosis in proliferating cancer cells (including leukemia, breast, brain, prostate, and lung cancers) by binding to the T1/ST2 receptor and activating caspases and MAP kinases.
• Apoptosis induction was selective for proliferating cells, correlating with T1/ST2 receptor expression levels.

Conclusions:

• TCApF is a novel apoptosis-inducing factor with significant anti-cancer activity.
• The T1/ST2 receptor is a key mediator of TCApF-induced apoptosis.
• TCApF represents a promising new therapeutic agent for various cancers, particularly those with high T1/ST2 receptor expression.