The Role of mTOR Signaling in Tumor-Induced Alterations to Neuronal Function in Diffusely Infiltrating Glioma

Area of Science:

• Neuroscience
• Oncology
• Molecular Biology

Background:

• The mammalian target of rapamycin (mTOR) pathway regulates cell growth and survival, crucial for central nervous system functions like neuronal development and plasticity.
• Dysregulated mTOR signaling is implicated in diffuse gliomas (e.g., glioblastomas), driving tumor progression, therapeutic resistance, and metabolic changes.
• Gliomas can alter surrounding neurons through mTOR-dependent pathways, causing synaptic remodeling, hyperexcitability, and neurological issues like seizures.

Purpose of the Study:

• To review the role of mTOR signaling in both tumor cells and neurons within diffusely infiltrating gliomas.
• To explore mTOR as a therapeutic target for oncogenesis and neurological dysfunction in these tumors.

Main Methods:

• Literature review synthesizing current knowledge on mTOR signaling in diffusely infiltrating gliomas.
• Analysis of studies investigating mTOR's impact on tumor biology and peritumoral neuronal function.

Main Results:

• mTOR signaling is aberrantly activated in diffuse gliomas, promoting malignant characteristics.
• Glioma-induced neuronal reprogramming via mTOR contributes to neurological deficits, including seizures and cognitive impairment.
• While direct anti-tumor efficacy of mTOR inhibitors in gliomas has been limited, they show promise in alleviating neurological symptoms.

Conclusions:

• mTOR is a key mediator of both glioma progression and associated neurological dysfunction.
• Targeting mTOR presents a potential therapeutic strategy at the interface of cancer biology and neuroscience for diffuse gliomas.
• Further research is warranted to optimize mTOR-targeted therapies for combined anti-tumor and neurological benefits.