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Sestrin2 can alleviate endoplasmic reticulum stress to improve traumatic brain injury by activating AMPK/mTORC1 signaling pathway

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Summary

Traumatic brain injury (TBI), as a serious central nervous system disease, can result in severe neurological dysfunction or even disability and death of patients. The early and effective intervention of secondary brain injury can improve the prognosis of TBI. Endoplasmic reticulum (ER) stress is one of the main reasons to recover TBI. ER stress inhibition may be beneficial in treating TBI. Sestrin2 is a crucial regulator of ER stress, and its activation can significantly improve TBI. In this paper, we analyze the biological function of sestrin2, the latest findings on ER stress, and the relationship between ER stress and TBI. We elucidate the relationship of sestrin2 inhibiting ER stress via activating the AMP-activated protein kinase (AMPK)/mammalian target of rapamycin complex 1 (MTORC1) signaling. Finally, we elaborate on the possible role of sestrin2 in TBI and explain how its activation potentially improves TBI.

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Abbreviations

TBI:

Traumatic brain injury

ER:

Endoplasmic reticulum

AMPK:

AMP-activated protein kinase

mTORC1:

Mammalian target of rapamycin complex 1

TSC:

Tuberous sclerosis complex

PA26:

p53-activated gene 26

ATF4:

Activating transcription factor 4

Nrf2:

Nuclear factor erythroid-2-related factor 2

WDR:

WD repeat domain 24

GATOR1:

GTPase-activating protein activity toward Rags1

RNF167:

RING finger protein 167

STAMBPL1:

STAM-binding-protein-like 1

UPR:

Unfolded protein response

CHOP:

C/EBP homologous protein

IRE1:

Inositol required kinase 1

PERK:

Protein kinase R-like endoplasmic reticulum kinase

mTOR:

Mechanistic target of rapamycin

ULK1:

Unc-51 like autophagy activating kinase 1

I/R:

Ischemia-reperfusion

NF-κB:

Nuclear factor kappa B

ROS:

Reactive oxygen species

TON:

Traumatic optic neuropathy

PDIA3:

Protein disulfide isomerase A3

DNAJC3:

DNA J homology subfamily C member 3

TBK1:

TANK-binding kinase 1

PD:

Parkinson’s disease

AD:

Alzheimer’s disease

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Authors

Contributions

XL designed the study. YZ, YZ, BO.A.B, MH and XL prepared the first draft of the manuscript. YZ, BO.A.B, YZ, MH and XL revised the manuscript. All authors approved the final paper.

Corresponding author

Correspondence to Xuehong Liu.

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The authors declare that they have no competing interests.

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Zhou, Y., Zhang, Y., Botchway, B.O. et al. Sestrin2 can alleviate endoplasmic reticulum stress to improve traumatic brain injury by activating AMPK/mTORC1 signaling pathway. Metab Brain Dis 39, 439–452 (2024). https://doi.org/10.1007/s11011-023-01323-2

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  • DOI: https://doi.org/10.1007/s11011-023-01323-2

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