PMID- 30627594 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220210 IS - 2331-8325 (Print) IS - 2331-8325 (Electronic) IS - 2331-8325 (Linking) VI - 8 IP - 24 DP - 2018 Dec 20 TI - Method for Studying the Effect of Gene Silencing on Bacterial Infection-induced ERK1/2 Signaling in Bone-marrow Derived Macrophages. LID - e3123 [pii] LID - 10.21769/BioProtoc.3123 [doi] AB - Macrophages are highly phagocytic cells that utilize various pathogen recognition receptors (PRRs) to recognize pathogen-associated molecular patterns (PAMPs). These PAMPs can be present within the microbe, such as bacterial CpG DNA, and are recognized by Toll-like receptor 9 (TLR9), a PRR present on the endosomal membrane of macrophages. PAMPs can also be present on the surface of microbes, such as Lipopolysaccharide (LPS), which decorates the outer membrane of gram-negative bacteria like Salmonella typhimurium and Escherichia coli. LPS is recognized by TLR4 present on the plasma membrane of macrophages, and LPS-TLR4 association leads to activation of signaling cascades including MAPK phosphorylation, which in turn promotes macrophage activation and microbial killing. This protocol describes the method for studying the role of a gene of interest in Extracellular signal-regulated protein kinases 1 and 2 (ERK1/2) signaling, induced by bacterial infection in primary bone-marrow derived macrophages (BMDMs). FAU - Kumar, Gaurav AU - Kumar G AD - Division of Cell Biology and Immunology, CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India. FAU - Arya, Subhash B AU - Arya SB AD - Division of Cell Biology and Immunology, CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India. FAU - Tuli, Amit AU - Tuli A AD - Division of Cell Biology and Immunology, CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India. LA - eng GR - Wellcome Trust/United Kingdom GR - IA/I/14/2/501543/WTDBT_/DBT-Wellcome Trust India Alliance/India GR - R01 DK042748/DK/NIDDK NIH HHS/United States GR - R01 DK069703/DK/NIDDK NIH HHS/United States PT - Journal Article PL - United States TA - Bio Protoc JT - Bio-protocol JID - 101635102 PMC - PMC6322648 MID - EMS81007 OTO - NOTNLM OT - Bone-marrow derived macrophages OT - ERK signaling OT - Infection OT - Salmonella OT - Western blotting COIS- Competing interests The authors declare no competing financial interests. EDAT- 2019/01/11 06:00 MHDA- 2019/01/11 06:01 PMCR- 2019/12/20 CRDT- 2019/01/11 06:00 PHST- 2019/01/11 06:00 [entrez] PHST- 2019/01/11 06:00 [pubmed] PHST- 2019/01/11 06:01 [medline] PHST- 2019/12/20 00:00 [pmc-release] AID - e3123 [pii] AID - 3123 [pii] AID - 10.21769/BioProtoc.3123 [doi] PST - ppublish SO - Bio Protoc. 2018 Dec 20;8(24):e3123. doi: 10.21769/BioProtoc.3123.