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2011 Apop.pdf - Lab-JOT

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Signaling Pathways<br />

Death Receptor Signaling<br />

MKK7<br />

JNK<br />

Bcl-2<br />

ASK1<br />

FasL<br />

Fas/<br />

CD95<br />

Daxx<br />

Pro-<strong>Apop</strong>totic<br />

Pro-Survival<br />

Caspase-8,-10<br />

RIP<br />

Bcl-2<br />

FADD<br />

Bid<br />

tBid<br />

Caspase-6<br />

DAPK<br />

FADD<br />

Cyto c<br />

Death Receptor Signaling<br />

TNF-α<br />

TNFR-1 TNFR-2 DR3<br />

APO-3<br />

TRADD<br />

Apaf-1<br />

FLIP<br />

TRADD<br />

RIP CYLD<br />

RAIDD<br />

ASK1<br />

Caspase-9<br />

TRAF2<br />

HtrA2<br />

Smac<br />

ub<br />

Lamin A Actin Gas2 Fodrin Rock-1 ICAD Acinus<br />

PARP<br />

c-IAP1/2<br />

NIK<br />

IKK<br />

IκB<br />

ub<br />

NF-κB<br />

NF-κB<br />

XIAP<br />

TNF-α<br />

Caspase-3<br />

CAD<br />

TRAF2<br />

FLIPs<br />

TRAF2<br />

RIP<br />

TRADD<br />

APO-3L/<br />

TWEAK<br />

+zVAD<br />

TRADD<br />

FADD<br />

Caspase-8,-10<br />

Caspase-7<br />

DNA Repair<br />

Cell Shrinkage<br />

Membrane Blebbing DNA Fragmentation Chromatin Condensation<br />

<strong>Apop</strong>tosis<br />

www.cellsignal.com<br />

FADD<br />

© 2003–<strong>2011</strong> Cell Signaling Technology, Inc.<br />

APO-2L/<br />

TRAIL<br />

DR4/5<br />

ComplexIIb<br />

RIP1<br />

RIP3<br />

Necroptosis<br />

Pathway Description: <strong>Apop</strong>tosis can be induced through the activation of death receptors including Fas, may also activate JNK via ASK1/MKK7. Activation of JNK may lead to the inhibition of Bcl-2 by phosphorylation.<br />

TNFαR, DR3, DR4, and DR5 by their respective ligands. Death receptor ligands characteristically initiate<br />

In the absence of caspase activation, stimulation of death receptors can lead to the activation of an<br />

signaling via receptor oligomerization, which in turn results in the recruitment of specialized adaptor proteins<br />

alternative programmed cell death pathway termed necroptosis by forming complex IIb.<br />

and activation of caspase cascades. Binding of FasL induces Fas trimerization, which recruits initiator<br />

Selected Reviews:<br />

caspase-8 via the adaptor protein FADD. Caspase-8 then oligomerizes and is activated via autocatalysis.<br />

Declercq, W. et al. (2009) RIP kinases at the crossroads of cell death and survival. Cell 138, 229–232.<br />

Activated caspase-8 stimulates apoptosis via two parallel cascades: it can directly cleave and activate<br />

Humphreys, R.C. and Halpern, W. (2008) Trail receptors: targets for cancer therapy. Adv. Exp. Med. Biol.<br />

caspase-3, or alternatively, it can cleave Bid, a pro-apoptotic Bcl-2 family protein. Truncated Bid (tBid)<br />

615, 127–158.<br />

translocates to mitochondria, inducing cytochrome c release, which sequentially activates caspase-9 and<br />

Logue, S.E. and Martin, S.J. (2008) Caspase activation cascades in apoptosis. Biochem. Soc. Trans.<br />

-3. TNF-α and DR-3L © 2002 can – deliver 2010 pro- Cell Signaling or anti-apoptotic Technology, signals. Inc. TNFαR and DR3 promote apoptosis via<br />

Death Receptor Signaling • created January 2002 • revised November 2010<br />

36, 1–9.<br />

the adaptor proteins TRADD/FADD and the activation of caspase-8. Interaction of TNF-α with TNFαR may<br />

Van Herreweghe, F. et al. (2010) Tumor necrosis factor-mediated cell death: to break or to burst,<br />

activate the NF-κB pathway via NIK/IKK. The activation of NF-κB induces the expression of pro-survival<br />

that’s the question. Cell. Mol. Life Sci. 67, 1567–1579.<br />

genes including Bcl-2 and FLIP, the latter can directly inhibit the activation of caspase-8. FasL and TNF-α<br />

Zakeri, Z. and Lockshin, R.A. (2008) Cell death: history and future. Adv. Exp. Med. Biol. 615, 1–11.<br />

Survival Factors:<br />

Growth Factors, Cytokines, etc.<br />

PKA<br />

14-3-3<br />

Bcl-2 Family<br />

PKC<br />

Pro-<strong>Apop</strong>totic<br />

Pro-Survival<br />

Erk1/2<br />

p90RSK<br />

Bad<br />

14-3-3<br />

Bad<br />

Cytosolic<br />

Sequestration<br />

HSP60<br />

PI3K<br />

Akt<br />

Caspase-3<br />

p70 S6K<br />

Calcineurin<br />

Apaf-1<br />

Caspase-9<br />

ub<br />

Mitochondrial Control of <strong>Apop</strong>tosis<br />

Mitochondrial Control of <strong>Apop</strong>tosis<br />

XIAP<br />

Caspase-8,-10<br />

Arts<br />

FADD<br />

Bid<br />

FasL<br />

Fas/<br />

CD95<br />

tBid<br />

Bax<br />

Bax<br />

Bad<br />

Cyto c<br />

Mule<br />

Bak<br />

Bak<br />

Bcl-xL<br />

HtrA2<br />

<strong>Apop</strong>tosis<br />

Mcl-1<br />

Bcl-xL<br />

tBid<br />

Smac/<br />

Diablo<br />

Mcl-1<br />

Bim<br />

LC8<br />

Microtubules<br />

LC8<br />

Bmt<br />

Puma<br />

AIF<br />

Bim<br />

Bcl-2<br />

Mule<br />

Endo G<br />

Hrk<br />

DP5<br />

Bcl-2<br />

Bmt<br />

Hrk<br />

DP5<br />

Bcl-2<br />

Noxa<br />

Death Stimuli:<br />

Survival Factor Withdrawal<br />

Bcl-2<br />

Bax<br />

Bax<br />

p53<br />

ATM/<br />

ATR<br />

JNK<br />

DNA Damage<br />

Genotoxic Stress<br />

ING2<br />

[NAD]<br />

SirT2<br />

www.cellsignal.com<br />

JNK<br />

Bax<br />

Caspase-2<br />

Pathway Description: The Bcl-2 family of proteins regulate apoptosis by controlling mitochondrial<br />

channel (VDAC), which may play a role in regulating cytochrome c release. Mule/ARF-BP1 is a DNA damage<br />

activated E3 ubiquitin ligase for p53, and Mcl-1, an anti-apoptotic member of Bcl-2.<br />

permeability. The anti-apoptotic proteins Bcl-2 and Bcl-xL reside in the outer mitochondrial wall and inhibit<br />

cytochrome c release. The proapoptotic Bcl-2 proteins Bad, Bid, Bax, and Bim may reside in the cytosol but<br />

Selected Reviews:<br />

translocate to mitochondria following death signaling, where they promote the release of cytochrome c. Bad<br />

Brenner, D. and Mak, T.W. (2009) Mitochondrial cell death effectors. Curr. Opin. Cell Biol. 21, 871–877.<br />

translocates to mitochondria and forms a pro-apoptotic complex with Bcl-xL. This translocation is inhibited<br />

Chalah, A. and Khosravi-Far, R. (2008) The mitochondrial death pathway. Adv. Exp. Med. Biol. 615, 25–45.<br />

by survival factors that induce the phosphorylation of Bad, leading to its cytosolic sequestration. Cytosolic<br />

Pradelli, L.A. et al. (2010) Mitochondrial control of caspase-dependent and -independent cell death.<br />

Bid is cleaved by caspase-8 following signaling through Fas; its active fragment (tBid) translocates to mitochondria.<br />

Bax and Bim © 2003 translocate – 2010 Cell to mitochondria Signaling Technology, in response Inc. to death stimuli, including survival factor Mitochondrial Control of <strong>Apop</strong>tosis • created February 2003 • revised November 2010<br />

Cell. Mol. Life Sci. 67, 1589–1597.<br />

Rong, Y. and Distelhorst, C.W. (2008) Bcl-2 protein family members: versatile regulators of calcium<br />

withdrawal. Activated following DNA damage, p53 induces the transcription of Bax, Noxa, and PUMA. Upon<br />

signaling in cell survival and apoptosis. Annu. Rev. Physiol. 70, 73–91.<br />

release from mitochondria, cytochrome c binds to Apaf-1 and forms an activation complex with caspase-9.<br />

Speidel D. (2010) Transcription-independent p53 apoptosis: an alternative route to death. Trends Cell Biol.<br />

Although the mechanism(s) regulating mitochondrial permeability and the release of cytochrome c during<br />

20, 14–24.<br />

apoptosis are not fully understood, Bcl-xL, Bcl-2, and Bax may influence the voltage-dependent anion<br />

Suen, D.F. et al. (2008) Mitochondrial dynamics and apoptosis. Genes Dev. 22, 1577–1590.<br />

CaMKII<br />

RAIDD<br />

PIDD<br />

© 2002–<strong>2011</strong> Cell Signaling Technology, Inc.<br />

22<br />

Direct Stimulatory Modification<br />

Direct Inhibitory Modification<br />

Multistep Stimulatory Modification<br />

Multistep Inhibitory Modification<br />

Tentative Stimulatory Modification<br />

Tentative Inhibitory Modification<br />

Transcriptional Stimulatory Modification<br />

Separation of Subunits or Cleavage Products<br />

Kinase<br />

Transcription Factor<br />

Receptor<br />

Pro-apoptotic<br />

Transcriptional Inhibitory Modification Joining of Subunits<br />

Translocation<br />

Phosphatase<br />

Caspase Enzyme Anti-apoptotic<br />

GAP<br />

GEF<br />

GTPase<br />

G-protein, ribosomal subunit<br />

23

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