mTOR signaling in neural stem cells: from basic biology to disease

Area of Science:

• Biochemistry
• Cell Biology
• Neuroscience

Background:

• The mammalian target of rapamycin (mTOR) pathway is crucial for cell growth, metabolism, and homeostasis.
• Dysregulation of the mTOR pathway is implicated in diseases characterized by abnormal growth, including cancer and hamartoma syndromes like tuberous sclerosis complex (TSC).
• mTOR signaling is a key regulator of stem cell behavior, influencing self-renewal and differentiation.

Purpose of the Study:

• To review recent advances in understanding the mTOR pathway's role in stem cell maintenance.
• To explore the specific implications of mTOR hyperactivation in neural stem cells (NSCs).
• To connect mTOR dysregulation in NSCs to the pathogenesis of TSC-associated neurological lesions.

Main Methods:

• Review of current literature on mTOR signaling in stem cells.
• Analysis of molecular mechanisms underlying mTOR pathway regulation.
• Examination of in vivo and in vitro studies involving NSCs and mTOR.

Main Results:

• mTOR is a critical regulator of stem cell homeostasis, balancing self-renewal and differentiation.
• Hyperactivation of mTOR in NSCs is etiologically linked to TSC.
• Animal models lacking mTOR regulators in NSCs recapitulate TSC neurological features.

Conclusions:

• mTOR pathway dysregulation in NSCs disrupts their homeostasis, contributing to TSC development.
• Targeting the mTOR pathway in NSCs may offer therapeutic potential for TSC.
• Further research into mTOR's role in NSC biology is warranted for understanding neurological disorders.