LAMTOR1 is a human gene whose product lAMTOR1 (Late Endosomal/Lysosomal Adaptor 1) is a key component of the ragulator complex that regulates mTORC1 signaling. It functions as a molecular scaffold that integrates signals from amino acids, growth factors, and cellular energy status. Variants in LAMTOR1 have been implicated in Alzheimer's Disease, Parkinson's Disease, Cancer. This page covers the gene's normal function, disease associations, expression patterns, and key research findings relevant to neurodegeneration. [1]
LAMTOR1 (Late Endosomal/Lysosomal Adaptor 1) is a key component of the ragulator complex that regulates mTORC1 signaling. It functions as a molecular scaffold that integrates signals from amino acids, growth factors, and cellular energy status.
mTORC1 Activation: LAMTOR1 is essential for mTORC1 activation by amino acids. The ragulator complex localizes to lysosomes where it activates mTORC1 in response to nutrient availability.
Rag GTPase Regulation: LAMTOR1 forms a complex with LAMTOR2 and LAMTOR3, acting as a guanine nucleotide exchange factor (GEF) for Rag GTPases.
Lysosomal Trafficking: The LAMTOR complex regulates endosomal and lysosomal trafficking, influencing autophagy and nutrient sensing.
ERK Pathway Modulation: LAMTOR1 also modulates ERK/MAPKmechanisms/mapk-signaling-neurodegeneration) signaling, connecting it to cell growth and differentiation.
LAMTOR1 is implicated in AD through:
In PD, LAMTOR1 participates in:
LAMTOR1 is frequently dysregulated in cancers. The ragulator-mTORC1 axis promotes tumor growth when overactive. LAMTOR1 expression correlates with prognosis in several cancer types.
LAMTOR1 dysfunction may exacerbate lysosomal impairment in lysosomal storage disorders, where mTORC1 signaling is often abnormal.
LAMTOR1 is expressed in:
In the brain, LAMTOR1 is expressed in:
Expression is regulated by:
LAMTOR1 is a potential therapeutic target for:
LAMTOR1 expression may serve as a biomarker for:
Meng et al. LAMTOR1 in neurodegeneration (2021). 2021. ↩︎