INSM1 promotes breast carcinogenesis by regulating C-MYC

Area of Science:

• Oncology
• Molecular Biology
• Cancer Research

Background:

• Insulinoma-associated protein-1 (INSM1) is a transcription factor implicated in neuroendocrine tumors.
• The role of INSM1 in breast cancer pathogenesis is not well understood.
• Understanding INSM1's function is crucial for developing novel breast cancer therapies.

Purpose of the Study:

• To investigate the role and mechanism of INSM1 in breast cancer.
• To determine the correlation between INSM1 expression and patient prognosis.
• To explore INSM1's impact on breast cancer cell behavior and tumor growth.

Main Methods:

• Immunohistochemistry on 158 breast cancer cohorts.
• Analysis of clinical and pathological data for survival correlations.
• In vitro cell assays and in vivo xenograft mouse models for INSM1 knockdown effects.

Main Results:

• INSM1 is significantly overexpressed in breast cancer tissues and correlates with poor prognosis.
• INSM1 knockdown suppressed breast cancer cell proliferation, migration, and aggregation.
• INSM1 interacts with SKP2 to regulate C-MYC and the p-ERK pathway, inhibiting tumor growth.

Conclusions:

• INSM1 contributes to breast cancer initiation and progression.
• INSM1 promotes tumor growth by regulating C-MYC and the p-ERK pathway via SKP2 interaction.
• INSM1 represents a potential therapeutic target for breast cancer treatment.