» Articles » PMID: 16162916

Bim is a Direct Target of a Neuronal E2F-dependent Apoptotic Pathway

Overview
Journal J Neurosci
Specialty Neurology
Date 2005 Sep 16
PMID 16162916
Citations 56
Authors
Affiliations
Soon will be listed here.
Abstract

The inappropriate expression/activation of cell-cycle-related molecules is associated with neuron death in many experimental paradigms and human neuropathologic conditions. However, the means whereby this links to the core apoptotic machinery in neurons have been unclear. Here, we show that the pro-apoptotic Bcl-2 homology 3 domain-only molecule Bcl-2 interacting mediator of cell death (Bim) is a target of a cell-cycle-related apoptotic pathway in neuronal cells. Induction of Bim in NGF-deprived cells requires expression and activity of cyclin-dependent kinase 4 (cdk4) and consequent de-repression of E2 promoter binding factor (E2F)-regulated genes including members of the myb transcription factor family. The Bim promoter contains two myb binding sites, mutation of which abolishes induction of a Bim promoter-driven reporter by NGF deprivation or E2F-dependent gene de-repression. NGF deprivation significantly increases endogenous levels of C-myb and its occupancy of the endogenous Bim promoter. These findings support a model in which apoptotic stimuli lead to cdk4 activation, consequent de-repression of E2F-regulated mybs, and induction of pro-apoptotic Bim.

Citing Articles

Potential of Therapeutic Small Molecules in Apoptosis Regulation in the Treatment of Neurodegenerative Diseases: An Updated Review.

Dailah H Molecules. 2022; 27(21).

PMID: 36364033 PMC: 9654492. DOI: 10.3390/molecules27217207.


Context-Dependent Functions of E2F1: Cell Cycle, Cell Death, and DNA Damage Repair in Cortical Neurons.

Zhang Y, Song X, Herrup K Mol Neurobiol. 2020; 57(5):2377-2390.

PMID: 32062842 DOI: 10.1007/s12035-020-01887-5.


Cell Cycle Proteins as Key Regulators of Postmitotic Cell Death.

Xia P, Liu Y, Chen J, Cheng Z Yale J Biol Med. 2019; 92(4):641-650.

PMID: 31866779 PMC: 6913832.


Cathepsin L induced PC-12 cell apoptosis via activation of B-Myb and regulation of cell cycle proteins.

Shen X, Zhao Y, Xu S, Wang L, Cao H, Cao Y Acta Pharmacol Sin. 2019; 40(11):1394-1403.

PMID: 31444477 PMC: 6889330. DOI: 10.1038/s41401-019-0286-9.


Apoptotic cell death regulation in neurons.

Hollville E, Romero S, Deshmukh M FEBS J. 2019; 286(17):3276-3298.

PMID: 31230407 PMC: 6718311. DOI: 10.1111/febs.14970.


References
1.
Brunet A, Bonni A, Zigmond M, Lin M, Juo P, Hu L . Akt promotes cell survival by phosphorylating and inhibiting a Forkhead transcription factor. Cell. 1999; 96(6):857-68. DOI: 10.1016/s0092-8674(00)80595-4. View

2.
Courtney M, Coffey E . The mechanism of Ara-C-induced apoptosis of differentiating cerebellar granule neurons. Eur J Neurosci. 1999; 11(3):1073-84. DOI: 10.1046/j.1460-9568.1999.00520.x. View

3.
Zhang H, Postigo A, Dean D . Active transcriptional repression by the Rb-E2F complex mediates G1 arrest triggered by p16INK4a, TGFbeta, and contact inhibition. Cell. 1999; 97(1):53-61. DOI: 10.1016/s0092-8674(00)80714-x. View

4.
Padmanabhan J, Park D, Greene L, Shelanski M . Role of cell cycle regulatory proteins in cerebellar granule neuron apoptosis. J Neurosci. 1999; 19(20):8747-56. PMC: 6782785. View

5.
Maroney A, Finn J, Bozyczko-Coyne D, OKane T, Neff N, Tolkovsky A . CEP-1347 (KT7515), an inhibitor of JNK activation, rescues sympathetic neurons and neuronally differentiated PC12 cells from death evoked by three distinct insults. J Neurochem. 1999; 73(5):1901-12. View