Bacterial Toxin Research Citations

EAE induction and Treg-specific deletion of Piezo1

Active EAE was induced in mice by immunization with MOG35–55 peptide (1 mg/ml) (MEVGWYRSPFSRVVHLYRNGK) emulsified in CFA supplemented with heat-killed Mycobacterium tuberculosis H37Ra (5 mg/ml). One hundred microliters of emulsion (EK-0111, Hooke Laboratories, Lawrence, MA) was injected subcutaneously at two sites over the flank region. In addition, 150 ng of pertussis toxin (PTX) (List Biological Laboratories, Campbell, CA) was injected intraperitoneally on the day of immunization and 48 hours later, as described previously (24, 56). …

Author did not specify which List Labs Pertussis Toxin was utilized. List Labs provides the following Pertussis Toxin products:
• Product #180 – Pertussis Toxin from B. pertussis, Lyophilized in Buffer
• Product #181 – Pertussis Toxin from B. pertussis, Lyophilized (Salt-Free)
• Product #179A – Pertussis Toxin from B. pertussis (in Glycerol)

2.13. Recall antigen assay

Approximately 1 × 105 PBMCs per well were seeded in a 96-well tissue culture plate and cultured in 100 μl of RPMI-1640 supplemented with 10% FBS overnight at 37 °C and 5% CO2. havPD-1 EVs in various concentration were added to the cells at 50 μl per well. In control group, 50 μl of Atezolizumab or isotype control IgG1 were added. After 1-h incubation, 50 μl of 0.8 μg/ml Tetanus Toxoid (List labs, 191A) was added to wells. After 5-day culture, supernatant was collected and IFNγ was measured (R&D Systems, DIF50) according to manufacturer’s instructions.

• Product #191 – Tetanus Toxoid from Clostridium tetani

For in vitro class-switching assays, cells were stimulated with 20 ng/mL interleukin (IL)-4 (R&D Systems, Minneapolis, MN, USA) and 10 µg/mL lipopolysaccharide (LPS; List Biological Laboratories, Campbell, CA, USA) for the time periods described …

Author did not specify which List Labs LPS product was utilized in their research.
List Labs provides the following LPS products: https://listlabs.com/product-information/lipopolysaccharides/

cells were either unstimulated or primed with LPS for 3 h followed by the addition of oxidised phospholipids (ox-PAPC) (100 μg ml −1 ; Invivogen), pdA:dT (1 μg ml −1 ; Invivogen), flagellin (1 μg ml −1 ; Invivogen), Clostridium difficile (1 μg ml −1 ; List Biologicals) or nigericin …

Author did not specify which C. diffile was utilized; List Labs provides the following:

• Product #152C – Toxin A from Clostridium difficile
• Product #155 – Toxin B from Clostridium difficile

… Pertussis toxin (PTX) was from List Biologicals …

Author did not specify which List Labs Pertussis Toxin was utilized. List Labs provides the following Pertussis Toxin products:
• Product #180 – Pertussis Toxin from B. pertussis, Lyophilized in Buffer
• Product #181 – Pertussis Toxin from B. pertussis, Lyophilized (Salt-Free)
• Product #179A – Pertussis Toxin from B. pertussis (in Glycerol)

EAE Experiments

EAE was induced in male S1P1 -GFP signaling mice and GFP reporter mice aged 8-12 weeks. According to methods defined by Tsai et al [30, 31], mice were immunized with an emulsion containing 200 micrograms of Complete Freund’s Adjuvant (CFA), 100 micrograms of myelin oligodendrocyte glycoprotein (MOG35-55) peptide35–55, and 200 nanograms of Bordetella pertussis toxin (lot# 181236A1, List Biological Laboratories) on days zero and two. The spleen tissues were collected after eight days of immunization which marked the onset of the clinical EAE symptoms.

• Product #181 – Pertussis Toxin from B. pertussis, Lyophilized (Salt-Free)

Induction of the EAE model

To induce EAE, female mice at 6–8 weeks old (n = 14 and 17 wild-type and Smek1-/+ mice, respectively) were immunized along their back with MOG35–55 (2 mg/ml) and Mycobacterium tuberculosis (8 mg/ml) dissolved in complete Freund’s adjuvant. Immediately after immunization and 2 days after immunization, mice received an intraperitoneal injection of pertussis toxin (200 ng; List Biological, Campbell, CA) in 100 μL phosphate-buffered saline (PBS). …

Author did not specify which List Labs Pertussis Toxin was utilized. List Labs provides the following Pertussis Toxin products:
• Product #180 – Pertussis Toxin from B. pertussis, Lyophilized in Buffer
• Product #181 – Pertussis Toxin from B. pertussis, Lyophilized (Salt-Free)
• Product #179A – Pertussis Toxin from B. pertussis (in Glycerol)

STAR★Methods
Key resources table

Cholera toxin List Biological Laboratory Cat#100B

• Product #100B – Cholera Toxin (AZIDE-FREE) from Vibrio cholerae

Cell preparation

In this work (1) SK-BR-3 (ATCC, Virginia, USA, HTB-30), HT-29 (ATCC, Virginia, USA), and CAKI-2 cells were thawed and cultured for two weeks in McCoy’s 5A (modified) Media (Wisent Inc., Quebec, Canada, 317-010-CL) supplemented with 10% fetal bovine serum (FBS), and 1% penicillin/streptomycin, (2) OCI-AML-5 cells (DSMZ, Braunschweig, Germany, ACC247) were thawed and cultured for two weeks in Alpha modified Eagle medium (Wisent Inc., Quebec, Canada, 310-010-CL) containing 10% FBS and 1% penicillin-streptomycin (Wisent Inc., Quebec, Canada, 450-201-EL) by volume, and (3) MCF-10A cells MCF-10A cells (Addex Bio, California, USA, C0006015) were thawed and cultured for three weeks in 1:1 Dulbecco’s Modified Essential Media and F12 media (ThermoFisher, Massachusetts, USA, 11330032), supplemented with 5% Horse serum (Sigma-Aldrich, Ontario, Canada, H1270), 20 ng/mL EGF (Peprotech, New Jersey, USA, AF-100-15), 0.5 ug/mL Hydrocortisone (Sigma-Aldrich, Ontario, Canada, H0888), 100 ng/mL Cholera Toxin (List Biological Laboratories, California, USA, 100B), …

• Product #100B – Cholera Toxin (AZIDE-FREE) from Vibrio cholerae

Experimental procedures

Since numerous commercial LPS preparations contain measurable contaminating proteins, for this study we utilized ultra-purified LPS (from Escherichia coli O111:B4) purchased from List Biological Laboratories, Inc. (Campbell, CA). Mice (C57BL/6: n = 5–8 animals; TLR4−/−: n = 4 animals for each experimental group) were injected with LPS solution (3 mg/kg, i.p.) prepared in sterile PBS (control). …

• Product #421 – ULTRA PURE LPS from Escherichia coli O111:B4