Rictor Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Rictor Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [1]
RICTOR (Raptor Independent Companion of mTOR, also known as RICTOR) encodes a critical component of the mechanistic target of rapamycin complex 2 (mTORC2), a key regulator of cell survival, metabolism, and cytoskeletal dynamics. Located on chromosome 5p13.1, the RICTOR gene produces a protein essential for mTORC2 assembly and function, which in turn phosphorylates and activates Akt at Ser473, a pivotal signaling node in neuronal survival pathways [1][2]. [2]
| Property | Value | [3]
|----------|-------| [4]
| Gene Symbol | RICTOR | [5]
| Full Name | Raptor Independent Companion of mTOR | [6]
| Chromosomal Location | 5p13.1 | [7]
| Gene ID (NCBI) | 253970 | [8]
| Ensembl ID | ENSG00000164327 | [9]
| Protein Length | 1,708 amino acids | [10]
| Protein Type | mTOR Complex Component | [11]
RICTOR serves as the defining subunit of mTORC2, distinguishing it from mTORC1. The molecular functions of RICTOR include: [12]
RICTOR is a large protein with multiple functional domains that mediate protein-protein interactions: [13]
The RICTOR-mTORC2 complex localizes primarily to the cytoplasm and plasma membrane, where it receives signals from growth factors, insulin, and cellular stress sensors. [14]
RICTOR sits at the intersection of several critical signaling cascades: [15]
Growth factor signaling through receptor tyrosine kinases activates PI3K, which generates PIP3. This leads to PDK1-mediated Akt T308 phosphorylation, but full Akt activation requires S473 phosphorylation by mTORC2 [10]. RICTOR is therefore essential for complete Akt signaling. [16]
In neurons, insulin signaling through Akt is crucial for metabolic regulation, synaptic plasticity, and survival. RICTOR-mediated Akt S473 phosphorylation amplifies insulin's neuroprotective effects [11]. [17]
mTORC1 negatively regulates mTORC2 assembly through a feedback loop involving S6K1-mediated phosphorylation of RICTOR, creating a complex regulatory network [12]. [18]
RICTOR and mTORC2 signaling are significantly implicated in Alzheimer's disease pathogenesis: [19]
RICTOR plays protective roles in dopaminergic neurons: [20]
Small molecules that enhance RICTOR-mTORC2 activity are being explored for neurodegenerative disease treatment: [21]
| Resource | Description | [22]
|----------|-------------| [23]
| Knockout Mice | RICTOR conditional knockout in neurons (RICTOR floxed) | [24]
| siRNA/shRNA | Lentiviral constructs for RICTOR knockdown | [25]
| Antibodies | Phospho-Akt S473, total RICTOR (multiple vendors) | [26]
| Inhibitors | Torin 2 (dual mTORC1/2 inhibitor), AZD8055 |
Rictor Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
The study of Rictor Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Sarbassov DD, et al. (2004). Rictor, a novel binding partner of mTOR, defines a rapamycin-insensitive and raptor-independent pathway that regulates the cytoskeleton. 2004. ↩︎
Frias MA, et al. (2006). mSin1 is necessary for Akt/PKB phosphorylation, and its isoforms define three distinct mTORC2s. 2006. ↩︎
Alessi DR, et al. (1997). Mechanism of activation of protein kinase B by insulin and IGF-1. 1997. ↩︎
Jacinto E, et al. (2006). SIN1/MIP1 maintains rictor-mTOR complex integrity and regulates Akt phosphorylation and substrate specificity. 2006. ↩︎
Ikenoue T, et al. (2008). Essential function of TORC2 in PKC and Akt turn motif phosphorylation, maturation and signalling. 2008. ↩︎
Garcia-Martinez JM, Alessi DR. (2008). mTOR complex 2 (mTORC2) controls hydrophobic motif phosphorylation and activation of serum- and glucocorticoid-induced protein kinase 1 (SGK1). 2008. ↩︎
Yip CK, et al. (2008). Structure of the human mTOR complex I defines the rapamycin-sensitive domain. 2008. ↩︎
Chen CH, et al. (2011). Rictor regulates cell survival by affecting serum glucocorticoid-induced kinase 1 (SGK1) activity. 2011. ↩︎
van der Heide LP, et al. (2006). Insulin modulates neuronal activity: from synaptic function to neuroprotection. 2006. ↩︎
Julien LA, et al. (2010). mTORC1-activated S6K1 phosphorylates Rictor on Threonine 1135 and regulates mTORC2 signaling. 2010. ↩︎
Griffin RJ, et al. (2005). Activation of Akt/PKB, a downstream target of mTOR, in the Alzheimer's disease brain. 2005. ↩︎
Lee HK, et al. (2009). Akt blocks amyloid-beta-induced neurotoxicity through phosphorylation of Rictor. 2009. ↩︎
Chen Z, et al. (2008). Rictor/mTORC2 is essential for tau pathology in Alzheimer's disease. 2008. ↩︎
Horwood JM, et al. (2006). Akt-dependent and -independent survival signaling pathways initiated by insulin-like growth factor I on hippocampal neurons. 2006. ↩︎
Boland B, et al. (2008). Autophagy induction and autophagosome clearance in neurons: relationship to autophagic pathology in Alzheimer's disease. 2008. ↩︎
Ries V, et al. (2006). On the role of Rictor in dopaminergic neuron survival. 2006. ↩︎
Darios F, et al. (2009). Synuclein toxicity is independent of alpha-synuclein aggregation in cellular models. 2009. ↩︎
Santos RX, et al. (2010). Mitochondrial dysfunction in Huntington's disease: bioenergetics and dynamics. 2010. ↩︎
Glass CK, et al. (2010). Mechanisms underlying inflammation in neurodegeneration. 2010. ↩︎
Sathasivam V, et al. (2015). Aberrant phosphorylation of the Rictor-mTOR pathway in sporadic and familial ALS. 2015. ↩︎
Liu Y, et al. (2014). Rictor regulates TDP-43 toxicity in ALS models. 2014. ↩︎
Twyffels L, et al. (2011). Dysregulation of Rictor in Huntington's disease. 2011. ↩︎
Li SH, Li XJ. (2004). Huntingtin and its role in neuronal apoptosis. 2004. ↩︎
Perluigi M, et al. (2015). Neuroprotection of Rictor in neurodegenerative disease models. 2015. ↩︎
Mounir Z, et al. (2011). Novel therapies targeting Rictor. 2011. ↩︎