DLEU2 facilitates bladder cancer progression through miR-103a-2-5p/SOS1 axis

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Bladder cancer (BC) is a life-threatening malignancy where dysregulated long non-coding RNAs (lncRNAs) are key drivers.
• The role of lncRNA deleted in lymphocytic leukemia 2 (DLEU2) in BC progression and its regulatory mechanisms are not fully understood.

Purpose of the Study:

• To investigate the expression, biological function, and molecular mechanisms of DLEU2 in bladder cancer progression.

Main Methods:

• Expression profiling of lncRNAs, miRNAs, and mRNAs in BC tissues using NCBI GEO database.
• Validation of expression levels by RT-qPCR.
• Functional assays (CCK-8, EdU, Transwell, scratch) to assess BC cell proliferation and migration.
• Luciferase reporter assays to confirm interactions between DLEU2, miR-103a-2-5p, and SOS1.
• Western blotting to analyze SOS1 protein expression.

Main Results:

• DLEU2 expression was significantly increased in BC tissues and promoted BC cell proliferation and migration.
• DLEU2 functions as a molecular sponge for miR-103a-2-5p, inhibiting its activity.
• The miR-103a-2-5p/SOS1 axis was identified, where miR-103a-2-5p targets SOS1, and this interaction influences BC cell behavior.

Conclusions:

• DLEU2 promotes BC progression through the miR-103a-2-5p/SOS1 regulatory axis.
• This study elucidates a novel mechanism in BC development.
• DLEU2 represents a potential therapeutic target for bladder cancer treatment.