PMID- 25136516 OWN - NLM STAT- MEDLINE DCOM- 20150330 LR - 20211021 IS - 2235-2988 (Electronic) IS - 2235-2988 (Linking) VI - 4 DP - 2014 TI - Induction of endoplasmic reticulum stress and unfolded protein response constitutes a pathogenic strategy of group A streptococcus. PG - 105 LID - 10.3389/fcimb.2014.00105 [doi] LID - 105 AB - The connection between bacterial pathogens and unfolded protein response (UPR) is poorly explored. In this review we highlight the evidence showing that group A streptococcus (GAS) induces endoplasmic reticulum (ER) stress and UPR through which it captures the amino acid asparagine (ASN) from the host. GAS acts extracellularly and during adherence to host cells it delivers the hemolysin toxins; streptolysin O (SLO) and streptolysin S (SLS). By poorly understood pathways, these toxins trigger UPR leading to the induction of the transcriptional regulator ATF4 and consequently to the upregulation of asparagine synthetase (ASNS) transcription leading to production and release of ASN. GAS senses ASN and alters gene expression profile accordingly, and increases the rate of multiplication. We suggest that induction of UPR by GAS and by other bacterial pathogens represent means through which bacterial pathogens gain nutrients from the host, obviating the need to become internalized or inflict irreversible cell damage. FAU - Baruch, Moshe AU - Baruch M AD - Department of Microbiology and Molecular Genetics, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI) Jerusalem, Israel. FAU - Hertzog, Baruch B AU - Hertzog BB AD - Department of Microbiology and Molecular Genetics, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI) Jerusalem, Israel. FAU - Ravins, Miriam AU - Ravins M AD - Department of Microbiology and Molecular Genetics, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI) Jerusalem, Israel. FAU - Anand, Aparna AU - Anand A AD - Department of Microbiology and Molecular Genetics, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI) Jerusalem, Israel. FAU - Cheng, Catherine Youting AU - Cheng CY AD - Department of Microbiology, Center for Research Excellence and Technological Enterprise (CREATE), National University of Singapore (NUS) and NUS-HUJI Singapore. FAU - Biswas, Debabrata AU - Biswas D AD - Department of Microbiology and Molecular Genetics, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI) Jerusalem, Israel ; Department of Microbiology, Center for Research Excellence and Technological Enterprise (CREATE), National University of Singapore (NUS) and NUS-HUJI Singapore. FAU - Tirosh, Boaz AU - Tirosh B AD - The School of Pharmacy, Institute for Drug Research, The Hebrew University of Jerusalem Jerusalem, Israel. FAU - Hanski, Emanuel AU - Hanski E AD - Department of Microbiology and Molecular Genetics, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI) Jerusalem, Israel ; Department of Microbiology, Center for Research Excellence and Technological Enterprise (CREATE), National University of Singapore (NUS) and NUS-HUJI Singapore. LA - eng PT - Journal Article PT - Review DEP - 20140804 PL - Switzerland TA - Front Cell Infect Microbiol JT - Frontiers in cellular and infection microbiology JID - 101585359 RN - 0 (Bacterial Proteins) RN - 0 (Streptolysins) RN - 0 (streptolysin O) RN - 0 (streptolysin S) RN - 7006-34-0 (Asparagine) SB - IM MH - Animals MH - Asparagine/metabolism MH - Bacterial Proteins/metabolism MH - *Endoplasmic Reticulum Stress MH - Host-Pathogen Interactions MH - Humans MH - Streptococcal Infections/genetics/*metabolism/microbiology MH - Streptococcus pyogenes/*physiology MH - Streptolysins/metabolism MH - *Unfolded Protein Response PMC - PMC4120759 OTO - NOTNLM OT - UPR OT - asparaginase OT - asparagine OT - group A streptococcus OT - metabolism OT - virulence EDAT- 2014/08/20 06:00 MHDA- 2015/03/31 06:00 PMCR- 2014/01/01 CRDT- 2014/08/20 06:00 PHST- 2014/05/28 00:00 [received] PHST- 2014/07/14 00:00 [accepted] PHST- 2014/08/20 06:00 [entrez] PHST- 2014/08/20 06:00 [pubmed] PHST- 2015/03/31 06:00 [medline] PHST- 2014/01/01 00:00 [pmc-release] AID - 10.3389/fcimb.2014.00105 [doi] PST - epublish SO - Front Cell Infect Microbiol. 2014 Aug 4;4:105. doi: 10.3389/fcimb.2014.00105. eCollection 2014.