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4 protocols using substance p

1

Intracellular Signaling Pathways Regulating RANTES Production

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Human recombinant GM-CSF was obtained from Tocris Bioscience, Bristol, UK. Substance P (Peptide Institute Inc., Osaka, Japan), SB203580 (Wako, Kanagawa, Japan), aprepitant (Cayman Chemical, Ann Arbor, Michigan), PD98059 (Wako), BIRB796 (Axon Medchem, Groningen, Netherlands), U0216 (Promega Corporation, Madison, WI) and mithramycin (Abcam, Cambridge, UK) were employed to investigate the intracellular signaling pathways involved in RANTES production. The actions of all these reagents are summarized in Table 1.

Functional characteristics of chemical agents used.

Table 1
Chemical agentsFunctions
RottlerinProtein kinase C inhibitor
TAPI-1Disintegrin and metalloproteinase inhibitor
PDTCThe radical scavenger
PerifosineAkt inhibitor
U0126ERK1/2 inhibitor
Y-27632ROCK inhibitor
DynasoreDynamin inhibitor
aprepitantSubstance P/NK-1 receptor antagonists

Akt: Protein kinase B; ROCK: Rho-associated coiled-coil forming kinase; NK-1: Neurokinin 1; ERK: Extracellular signal-regulated kinase.

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2

Enzymatic Activity Characterization Protocol

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Restriction and DNA-modifying enzymes were purchased from Takara Bio and New England Biolabs. Quick Taq HS DyeMix came from Toyobo. Oligonucleotide primers were synthesized by FASMAC. Leupeptin, Gly-Pro-MCA, His-Ala-MCA, Lys-Ala-MCA, Phe-Met-MCA, [(2S, 3S)-3-carboxyoxirane-2-carbonyl]-l-leucine (4-guanidinobutyl) amide hemihydrate, GLP-1, GIP, glucagon, oxyntomodulin, and substance-P were purchased from Peptide Institute. Gly-Phe-MCA and Ser-Tyr-MCA were obtained from Bachem. Other substrates not commercially available, that is, His-Ala-MCA, Gly-Ala-MCA, Tyr-Ala-MCA, Phe-Leu-MCA, HAED-MCA, HAEG-MCA, HAEF-MCA, YAED-MCA, LDKA-MCA, TDKA-MCA, and HAEGTF-MCA, were synthesized by Scrum. CCL3 and CXCL6 were provided by GenScript Japan. Bovine insulin, tosyl-l-lysyl-chloromethane hydrochloride, aprotinin, sitagliptin phosphate monohydrate, 3,4-dichloroisocoumarin, 4-(2-aminoethyl) benzenesulfonyl fluoride hydrochloride, and α-cyano-4-hydroxycinnamic acid were obtained from Sigma–Aldrich. Isoleucine thiazolidide hemifumarate (P32/98) was from FOCUS Biomolecules.
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3

Mast Cell Activation Pathway Assay

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ATP, ADP, adenosine, αβmeATP, BzATP, UTP, UDP, UDP-G, 2,4-DNP human serum albumin (DNP-HSA), anti-DNP IgE (clone SPE-7), CP48/80, p-nitrophenyl N-acetyl-b-d-glucosaminide, fura-2-acetoxymethylester (fura-2AM), and ivermectin were from Sigma-Aldrich (St. Louis, MO, USA). Substance P and proadrenomedullin N-terminal 20 peptide were from Peptide Institute (Osaka, Japan). Allophycocyanin-conjugated rat anti-mouse CD117 (c-Kit) Ab (clone 2B8) was from BD Pharmingen (Franklin Lakes, NJ, USA). PE-conjugated mouse anti-mouse FcεRIα Ab (clone MAR-1) was from eBioscience (San Diego, CA). Recombinant mouse IL-3 and recombinant mouse stem cell factor were from PeproTech (Rocky Hill, NJ, USA). NP-1815-PX was provided by Nippon Chemiphar Co., Ltd. (Tokyo, Japan). SB203580 (p38 MAPK inhibitor) and wortmannin (PI3K inhibitor) were from Cayman Chemical (Ann Arbor, MI, USA). U0126 (MEK1/2 inhibitor) was from Cell Signaling Technology (Danvers, MA, USA). All other chemicals used were of reagent grade or of the highest quality available.
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4

Murine Peritoneal Macrophage Activation

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Peritoneal cells were collected from C57BL/6N mice, seeded at the concentration of 5Â10 5 /well in plates in RPMI-1640 complete medium supplemented with 10% fetal bovine serum and 100 IU/mL penicillin-streptomycin and incubated for 2 hours at 37 C and 5% CO 2 . The non-adherent cells were washed out, and the remaining adherent cells (>80% of macrophages) were incubated with or without substance P (1 mM; Peptide institute, Osaka, Japan), recombinant periostin (20 ng/mL; eBioscience, San Diego, CA), and/or RBC lysates (5% volume of total medium volume). After 24 hours, the cells were subjected to total RNA extraction or flow cytometric analysis. The RBC lysates were prepared as follows: murine whole blood was collected and centrifuged, and serum were removed. The blood was frosted and thawed twice.
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