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7 protocols using icam 1

1

Characterization of Monocyte Behavior

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Wild-type C57BL/6 mice in CD45.2 background or CD45.1 background were purchased from the National Cancer Institute (Frederick, MD). CX3CR1gfp/gfp, CCR2rfp/rfp, CD11a-/-, CD11b-/-, ICAM1-/-, Nr4a1-/-, and TNFR-/- mice in C57BL/6 background were obtained from Jackson Laboratory. CX3CR1gfp/gfp mice were bred with wild-type C57BL/6 mice or CCR2rfp/rfp mice to produce CX3CR1gfp/+ mice or CX3CR1gfp/+CCR2rfp/+ heterozygous mice. The CX3CR1gfp/gfp mice express GFP under the promoter of the CX3CR1 gene [58 (link)], which is predominantly expressed on monocytes and has been extensively used to study monocyte behavior [11 (link), 12 (link), 32 (link)]. All colonies were maintained in ventilated specific-pathogen-free facilities with standard 12 h light/dark cycles. Animals between 6 and 12 weeks of age were used for all experiments.
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2

Tumor Growth Modeling in Genetically Engineered Mice

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All mice (C57BL/6J, #0664; Foxn1−/−, #2019;
ICAM-1−/−, #2867) were purchased from Jackson
Laboratory and allowed to acclimatize to local conditions for at least 1 week.
Animals were provided water and standard chow ad libitum and
were maintained on a 12-hour light/dark cycle. For tumor cell inoculation, a
100μL solution of 2 × 105 of B16-F10 or 1 ×
106 LLC was injected s.c. in the right rear leg of each mouse, as
described previously (11 (link)). Mice (sex- and
age-matched littermates) were randomly inoculated. Tumor volume was determined
by measuring the diameters of tumors with calipers and calculated by the
equation for volume of a spheroid: (a2 × b ×
π)/6, where a is the short axis and bis the long axis of the tumor. Dysbiosis was induced 2 weeks prior to the tumor
inoculations by administering a cocktail of antibiotics, i.e. ampicillin (250
mg/L), vancomycin (125 mg/L), neomycin (250 mg/L), and metronidazole (250 mg/L)
in their drinking water, available ad libitum during the
experiment.(12 (link)) Mice receiving
TNF-α were randomized on day 7 after tumor inoculation, and murine
TNF-α treatment was initiated (q3dx4; 120 μg/kg in sterile PBS;
i.p.). After euthanization, organs were promptly harvested, measured, and
processed. Experiments were approved by the University of Arkansas for Medical
Sciences Institutional Animal Care and Use Committee (IACUC Protocol #3610 and
#3836).
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3

Transgenic Mouse Models for Immune Research

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Wild type C57BL/6 mice were obtained from Charles Rivers. Transgenic mice, including CD11b-/- (Cat# 003991), CD11a-/- (Cat# 005257), ICAM-1-/- (Cat# 002867), and CX3CR1gfp/gfp (Cat# 005582), were purchased from Jackson lab and bred in specific pathogen-free (SPF) level animal facility of our institute. The mice were housed in controlled conditions with a temperature of 22-24°C, humidity of 30-60%, and a 12-hour light/12-hour dark cycle. Mice aged 6-12 weeks (both male and female) were used for all experiments. The animal study protocol was approved by the Animal Ethics Committee of Sun Yat-Sen University under protocol number [2018]08–81. The guidelines for the Ethical Review of Laboratory Animal Welfare (GB/T35892-2018) and institutional ethical guidelines for animal experiments were followed.
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4

Murine Genetic Models for Inflammation Research

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Male C57BL/6J, intercellular adhesion molecule-1 (Icam-1)-/-, and p47phox-/- mice were purchased from the Jackson Laboratories (Bar Harbor, ME) and housed in a temperature-controlled, 12-hour light/12-hour dark room. Cxcl1-/- mice on a C57BL/6 background were kind gifts from Dr Sergio Lira (Mount Sinai, NY) and were further back-crossed into a C57BL/6J background for 5 more generations at the National Institute on Alcohol Abuse and Alcoholism animal facility, with C57BL/6J mice being used as wild-type (WT) controls. In some experiments, heterozygous breeding of Cxcl1+/- mice was performed to obtain Cxcl1-/- and littermate WT controls. Animal care was in accordance with the guidelines of the National Institutes of Health. The animal experiments were approved by the National Institute on Alcohol Abuse and Alcoholism Animal Care and Use Committee.
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5

Diabetic Skin Wound Healing in Mice

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ICAM-1+/+ and ICAM-1/ mice were obtained from the Jackson Laboratory (Bar Harbor, ME, United States). All mice were housed under specific pathogen-free conditions in full compliance with the Animal Use and Care Committee of Central South University, Changsha, Hunan Province, China. A type 1 diabetic model was induced by continuous low-dose streptozotocin (STZ) intraperitoneal injection (50 mg/kg; Sigma-Aldrich) for 5 days. The normal control (NG) was injected with an identical dose of phosphate-buffered saline (PBS). Mice were identified as diabetic based on a blood glucose level > 250 mg/dL. Skin injury was performed after the mice had maintained a diabetic status for longer than 3 weeks. Prior to surgery, mice were anaesthetized by intraperitoneal injection with a ketamine–xylazine solution (80 mg/kg ketamine, 5 mg/kg xylazine). We used a 3.0-mm biopsy punch to perform symmetrical full-thickness excisional injury on the skin. Mice were euthanized with CO2 and injured tissue was collected 4 and 8 days after surgery. Seven mice per group were analyzed at each time point.
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6

Murine Genetic Models for Immunoassays

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Wild-type C57BL/6 and Mavs–/–mice have been described previously5. ICAM-1–/–mice on a C57BL/6 background were purchased from Jackson Laboratory (Stock No: 002867). All mice were housed and bread at the institutional animal facility under specific pathogen-free conditions. Mice were housed with standard housing in cages containing 3–5 mice per cage.
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7

Immunohistochemical Analysis of Intestinal Inflammation

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Small intestinal tissue from CLP and sham surgery from all three strains (WT, SIRT2KO, and SIRT2KI) of mice was harvested, and fixed frozen sections were stained using E-selectin and ICAM-1 (BD Biosciences, San Jose, CA, USA) and Von Willebrand factor (VWF, Abcam, Inc., Cambridge, MA, USA). Cy™3-conjugated labeled secondary antibodies for E-selectin, ICAM-1, and FITC-conjugated secondary antibody for VWF were purchased from Jackson ImmunoResearch Laboratories, Inc. (West Grove, PA, USA). The IHC techniques and virtual image captures were as described previously [22 (link), 23 (link)].
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