Table I.

Selected examples of bacterial pathogens and host cell death

Bacteria Factor Function Mechanism Host target Reference 
Chlamydia trachomatis CPAF Inhibition of apoptosis Degradation of proapoptotic proteins BH3-only proteins Pirbhai et al., 2006  
 Unknown Inhibition of apoptosis Leads to mislocalizaton and prevents proapoptotic activity Bad Verbeke et al., 2006  
EPEC NleH Inhibition of apoptosis Inhibits caspase-3 activation BI-1 Hemrajani et al., 2010  
 NleD Inhibition of apoptosis Cleaves JNK via metalloprotease activity and inhibits JNK signaling JNK Baruch et al., 2011  
Helicobacter pylori CagA Inhibition of apoptosis Up-regulation of anti-proapoptotic protein, Mcl-1 MCL-1 Mimuro et al., 2007  
 Unknown Inhibition of apoptosis Activates EGFR–Akt–Bcl2 antiapoptotic pathway EGFR Yan et al., 2009  
Legionella pneumophila SdhA Inhibition of cell death Inhibits mitochondrial disruption and caspase activation Unknown Laguna et al., 2006  
 SidF Inhibition of apoptosis Inhibits apoptosis signaling BNIP3, Bcl-rambo Banga et al., 2007  
 LegK1 Inhibition of cell death? Promotes host pro-survival signal via NF-κB activation IκBα, p100 Ge et al., 2009  
 LnaB Inhibition of cell death? Promotes host pro-survival signal via NF-κB activation Unknown Losick et al., 2010  
 Flagellin Induction of pyroptosis Induces the NAIP5–NLRC4–inflammasome–caspase-1 activation NLRC4, NAIP5 Amer et al., 2006; Ren et al., 2006; Kofoed and Vance, 2011; Zhao et al., 2011  
Mycobacterium tuberculosis Unknown Inhibition of apoptosis Up-regulation of anti-proapoptotic proteins, Mcl-1 and A1 MCL-1, A1 Sly et al., 2003; Loeuillet et al., 2006; Dhiman et al., 2008  
 Zmp1 Inhibition of inflammasome activation Inhibits caspase-1 activation and IL-1β secretion Unknown Master et al., 2008  
Salmonella Typhimurium Flagellin, PrgJ Induction of pyroptosis Induces the NAIP–NLRC4–inflammasome–caspase-1 activation NLRC4, NAIP2, NAIP5 Franchi et al., 2006; Miao et al., 2006, 2010a; Kofoed and Vance, 2011; Zhao et al., 2011  
 AvrA Inhibition of apoptosis Modifies acetyltransferase activity toward MAPKK and inhibits JNK activation MAPKKs Jones et al., 2008  
 SopB Inhibition of apoptosis Induction of host pro-survival activity PI3K/Akt Knodler et al., 2005; Kum et al., 2011  
Shigella flexneri Unknown Induction of necrotic cell death Induces mitochondrial dysfunction BNIP3, CypD Carneiro et al., 2009  
 Unknown Inhibit mitochondrial dysfunction Activates Nod1–RIP2–NF-κB pro-survival signaling Bcl2 Carneiro et al., 2009  
 MxiI Induction of pyroptosis Induces the NLRC4–inflammasome–caspase-1 activation NLRC4 Suzuki et al., 2007; Miao et al., 2010a  
Yersinia YopJ Induction of apoptosis Inhibition of NF-κB and MAPK signaling via acetyltransferase activity results in induction of apoptosis MAPKKs, IKKβ Monack et al., 1997, Orth et al., 1999; Mukherjee et al., 2006  
 YopK Inhibition of pyroptosis Prevents inflammasome recognition by interacting with T3SS translocon T3SS translocon (bacterial target) Brodsky et al., 2010; Dewoody et al., 2011  
Bacteria Factor Function Mechanism Host target Reference 
Chlamydia trachomatis CPAF Inhibition of apoptosis Degradation of proapoptotic proteins BH3-only proteins Pirbhai et al., 2006  
 Unknown Inhibition of apoptosis Leads to mislocalizaton and prevents proapoptotic activity Bad Verbeke et al., 2006  
EPEC NleH Inhibition of apoptosis Inhibits caspase-3 activation BI-1 Hemrajani et al., 2010  
 NleD Inhibition of apoptosis Cleaves JNK via metalloprotease activity and inhibits JNK signaling JNK Baruch et al., 2011  
Helicobacter pylori CagA Inhibition of apoptosis Up-regulation of anti-proapoptotic protein, Mcl-1 MCL-1 Mimuro et al., 2007  
 Unknown Inhibition of apoptosis Activates EGFR–Akt–Bcl2 antiapoptotic pathway EGFR Yan et al., 2009  
Legionella pneumophila SdhA Inhibition of cell death Inhibits mitochondrial disruption and caspase activation Unknown Laguna et al., 2006  
 SidF Inhibition of apoptosis Inhibits apoptosis signaling BNIP3, Bcl-rambo Banga et al., 2007  
 LegK1 Inhibition of cell death? Promotes host pro-survival signal via NF-κB activation IκBα, p100 Ge et al., 2009  
 LnaB Inhibition of cell death? Promotes host pro-survival signal via NF-κB activation Unknown Losick et al., 2010  
 Flagellin Induction of pyroptosis Induces the NAIP5–NLRC4–inflammasome–caspase-1 activation NLRC4, NAIP5 Amer et al., 2006; Ren et al., 2006; Kofoed and Vance, 2011; Zhao et al., 2011  
Mycobacterium tuberculosis Unknown Inhibition of apoptosis Up-regulation of anti-proapoptotic proteins, Mcl-1 and A1 MCL-1, A1 Sly et al., 2003; Loeuillet et al., 2006; Dhiman et al., 2008  
 Zmp1 Inhibition of inflammasome activation Inhibits caspase-1 activation and IL-1β secretion Unknown Master et al., 2008  
Salmonella Typhimurium Flagellin, PrgJ Induction of pyroptosis Induces the NAIP–NLRC4–inflammasome–caspase-1 activation NLRC4, NAIP2, NAIP5 Franchi et al., 2006; Miao et al., 2006, 2010a; Kofoed and Vance, 2011; Zhao et al., 2011  
 AvrA Inhibition of apoptosis Modifies acetyltransferase activity toward MAPKK and inhibits JNK activation MAPKKs Jones et al., 2008  
 SopB Inhibition of apoptosis Induction of host pro-survival activity PI3K/Akt Knodler et al., 2005; Kum et al., 2011  
Shigella flexneri Unknown Induction of necrotic cell death Induces mitochondrial dysfunction BNIP3, CypD Carneiro et al., 2009  
 Unknown Inhibit mitochondrial dysfunction Activates Nod1–RIP2–NF-κB pro-survival signaling Bcl2 Carneiro et al., 2009  
 MxiI Induction of pyroptosis Induces the NLRC4–inflammasome–caspase-1 activation NLRC4 Suzuki et al., 2007; Miao et al., 2010a  
Yersinia YopJ Induction of apoptosis Inhibition of NF-κB and MAPK signaling via acetyltransferase activity results in induction of apoptosis MAPKKs, IKKβ Monack et al., 1997, Orth et al., 1999; Mukherjee et al., 2006  
 YopK Inhibition of pyroptosis Prevents inflammasome recognition by interacting with T3SS translocon T3SS translocon (bacterial target) Brodsky et al., 2010; Dewoody et al., 2011  

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