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18 protocols using b6 sjl cd45.1

1

Generation and Analysis of Mouse Chimeras

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Mice were bred at UCLA and Memorial Sloan Kettering Cancer Center in accordance with the guidelines of the institutional Animal Care and Use Committee (IACUC). The following mouse strains were used this study: C57BL/6 (CD45.2) (Jackson Labs, #000664), B6.SJL (CD45.1) (Jackson Labs, #002114), Rag2−/− (Jackson Labs #008449), Klra8−/− (Ly49H-deficient), Zbtb32−/−, and Il12rb2−/−x Il18ra1−/− (MSKCC, J.C. Sun). Experiments were conducted using 7–8 week old age- and gender-matched mice in accordance with approved institutional protocols.
Generation of mixed bone marrow chimeric mice was performed as previously described18 (link). Parabiosis surgery was performed as previously described12 (link), 15 (link), 16 (link), 17 (link). Intravascular labeling of lymphocytes of experimental mice was performed by injecting (i.v.) 2.5 μg of fluorophore-conjugated CD45 (30-F11) and euthanized 3 minutes later.
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2

Generating Gpr18 Bone Marrow Chimeras

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For non-competitive chimeras for influenza infections, 5 x 106 whole bone marrow cells from either Gpr18+/+ or Gpr18-/- mice were injected into 800 cGy-irradiated B6.Ly5.2 CD45.1+ recipients (NCI). For mixed bone marrow chimeras to analyze lineage commitment, 5 x 106 bone marrow cells from either Gpr18+/+ or Gpr18-/- mice were mixed with 5 x 106 bone marrow cells from B6.SJL CD45.1+ (The Jackson Laboratory) mice and injected into 800 cGy-irradiated B6.Ly5.2 CD45.1+ recipients. Bone marrow chimeras used to analyze GPR18-dependent antibody responses were generated by transplanting 2 x 106 bone marrow cells from Gpr18+/+ or Gpr18-/- mice (IgHb) with 2 x 106 bone marrow from IgHa mice into 800 cGy-irradiated B6.Ly5.2 CD45.1+ recipients. Eight weeks post-transplant, mice were analyzed for chimerism in the specified tissues or used for further experiments. Athymic nude mice were pretreated with a 150μg dose of αCD8α antibody (clone 53–6.7) intraperitoneally 3 days prior to 800 cGy irradiation and transplantation to reduce pre-existing host IELs.
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3

Generation of STAT3-deficient OT-II Mice

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C57BL/6 mice were purchased from Orient (Gyeonggido, Republic of Korea). OT-II, B6.SJL (CD45.1) and Tcrb/ mice were purchased from Jackson Laboratory (Bar Harbor, ME, USA). STAT3flox/floxCD4-Cre mice were kindly provided by Drs. C. Dong (MD Anderson Cancer Center, Houston, TX, USA) and S. Akira (Osaka University, Osaka, Japan) and were crossed with OT-II to generate T cell-specific STAT3-deficient OT-II mice. All mice were maintained in the specific pathogen free facility at the vivarium of Seoul National University. All animal experiments were performed using a protocol approved by Institutional Animal Care and Use Committee Seoul National University (SNU-140602-2-2).
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4

Conditional Ctcf Knockout Mice

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Mice carrying a conditional Ctcf allele (Ctcfflox) were described in our previous study.27 (link) The Ctcfflox mice were crossed with Rosa26-CreER mice28 (link) (CreER; kindly provided by Weonsang Simon Ro, Institute of Gastroenterology, Yonsei University College of Medicine) to generate a tamoxifen (TMX) -inducible systemic Ctcf-cKO strain (CTCF-cKO). For Cre-mediated recombination, mice were intraperitoneally injected with tamoxifen (Sigma-Aldrich; St Louis, MO, USA) dissolved in corn oil (Sigma-Aldrich) for 4–5 consecutive days (2 mg day−1). Wild-type (WT) C57BL/6 (CD45.2) and B6.SJL (CD45.1) mice were purchased from The Jackson Laboratory (Bar Harbor, ME, USA). All animals were bred in specific pathogen-free facilities at Yonsei University College of Medicine. Age- and sex-matched CreER littermate mice were used as WT controls throughout the study. All animal studies were approved by the Department of Laboratory Animal Resources Committee of the Yonsei University College of Medicine.
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5

Mice Strains for Immunology Research

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Mice were bred at UCLA in accordance with the guidelines of the institutional Animal Care and Use Committee (IACUC). The following mouse strains were used this study: C57BL/6 (CD45.2) (Jackson Labs, #000664), B6.SJL (CD45.1) (Jackson Labs, #002114), Klra8−/− (Ly49H-deficient), Il12btm1.1Lky/J (Il12p40YFP), Xcr1-Cre (Hemmi et al., 2016 (link)), Rosa26LsL-DTA, Tmem173−/−, and Stat4−/−. Experiments were conducted using 6–8 week old age- and gender-matched mice in accordance with approved institutional protocols.
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6

Generating Necdin Null Mice from Fetal Liver

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The generation of Necdin null mice (C57BL/6, CD45.2) was described previously [42 (link)]. Fetal liver cells were isolated from E14.5 embryos as previously described [21 (link)]. Wild type C57BL/6 (CD45.2) and B6.SJL (CD45.1) mice were purchased from Jackson Laboratories. All mice were maintained in the Indiana University School of Medicine Animal Facility according to IACUC-approved protocols, and kept in Thorensten units with filtered germ-free air.
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7

Murine Immune Tolerance Models

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C57BL/6 (B6), B6.129S2-Ighmtm1Cgn/J (B6.μMT), B6.IFNαR1−/−, B6(Cg)-IFNαR1tm1.1Ees/J (B6.IFNαR1flox/flox), B6.129P2(Cg)-Ighg1tm1(IRES-cre)Cgn/J (GCCre) and B6.SJLPtprc< b > /BoyJ (B6.SJL- CD45.1+) mice were purchased from the Jackson Laboratory and bred in house. B6.Sle1b and B6.HKIR mice were described previously (Morel et al., 2000 (link); Notidis et al., 2002 (link)). Female mice of various ages (8–10 weeks, 3 months, and 6 months old) were used for all experiments. All animals were housed at Penn State Hershey Medical Center in specific pathogen-free animal facility. All procedures were performed in accordance with the guidelines approved by our Institutional Animal Care and Use Committee.
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8

Mice Strain Characterization for Immunological Studies

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Mice were bred at UCLA in accordance with the guidelines of the institutional Animal Care and Use Committee (IACUC). The following mouse strains were used this study: C57BL/6 (CD45.2) (Jackson Labs, #000664), B6.SJL (CD45.1) (Jackson Labs, #002114), B6(C)-Cgastm1d(EUCOMM)Hmgu/J (cGAS−/−) (Jackson Labs, #026554), B6.129S1-Il12btm1Jm/J (Il12b−/−) (Jackson Labs, #002693), B6.129-Il12btm1.1Lky/J C57BL/6J-Sting1gt/J (Il12bYFP×StingGt), Xcr1+/DTRvenus,29 (link)Il12btm1.1Lky/J (Il12bYFP) (Jackson Labs, #006412), Tmem173gt (StingGt) (Jackson Labs, #017537), B6;129S1-Il12rb2tm1Jm/J (Il12rb2−/−) (Jackson Labs, #003248), and C57BL/6J-Stat4em3Adiuj/J (Stat4−/−) (Jackson Labs, #028526). Experiments were conducted using 6–10-week-old age-and gender-matched mice in accordance with approved institutional protocols.
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9

Mouse Maintenance Protocol for Research

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C57BL/6 (CD45.2) and B6.SJL (CD45.1) mice were purchased from the Jackson Lab (Bar Harbor, ME, USA) or Harlan Laboratories, Inc. (Indianapolis, IN, USA) and maintained in house. Both male and female mice were used for the experiments. All laboratory mice were maintained in the animal facility at University of Cincinnati or University of Chicago. All experiments on mice in our research protocol were approved by Institutional Animal Care and Use Committee (IACUC) of University of Cincinnati or University of Chicago. All methods were performed in accordance with the relevant guidelines and regulations. The maintenance, monitoring, and end-point treatment of mice were conducted as described previously46 (link),56 (link),57 (link). Randomization, allocation concealment, and blind outcome assessment were conducted throughout all the experiments.
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10

Immune Cell Phenotyping in Mice

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Mice were bred at UCLA in accordance with the guidelines of the Institutional Animal Care and Use Committee (IACUC). The following mouse strains were used this study: C57BL/6 (CD45.2) (Jackson Labs, #000664), B6.SJL (CD45.1) (Jackson Labs, #002114), Klra8–/– (Ly49H-deficient). Experiments were conducted using 6–8 week old age- and gender-matched mice in accordance with approved institutional protocols.
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