Bacterial Toxin Research Citations

EAE induction and scoring:

6 to 8 weeks old, sex-matched NLK^fl/fl and NLK^Treg mice littermates were injected subcutaneously in the rear flank with 100 ug MOG^35-55 peptide (2HNMEVGWYRSPFSRVVHLYRNGK-COOH) in complete Freunds adjuvant (CFA) (Sigma) on day 0, and 250ng pertussis toxin (List Biological) was injected intraperitoneally on day 0 and day 2 post-induction. Mice were monitored and disease severity was scored every two days. …

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)

… Recombinant EF was produced as previously described.  Activated recombinant PA (PA63) was from List Biological Laboratories (Campbell, CA). …

• Product #174 – Anthrax Protective Antigen, Activated (PA 63) from B. anthracis

Experimental procedures –

Materials:

Recombinant anthrax toxins PA83, PA63, LF and EF were from List Biological Laboratories (Campbell, CA) …•

Product #174 – Anthrax Protective Antigen, Activated (PA 63) from B. anthracis

Author did not specify which Lethal Factor (LF) was utilized; List Labs provides the following LF:

• Product #172 – Anthrax Lethal Factor (LF), Recombinant from B. anthracis
• Product #169L – Anthrax Lethal Factor (LF-A), Recombinant from B. anthracis Native Sequence

• Product #171E – Anthrax Protective Antigen (PA), Recombinant from B. anthracis

• Product #178A – Anthrax Edema Factor (EF), Recombinant from B. anthracis

… Then, the mixture was injected subcutaneously into neck (0.1 mL) and both hindlegs (0.05 mL each) of mice. Pertussis toxin (200 ng; List Biological Lab, Inc) was administered intravenously on days 0 and 1 post-immunization. …

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)

C. difficile cytotoxin assay:

A cytotoxicity assay was performed as previously described with the following modifications (25). Briefly, ATCC CCL-81 Vero cells were grown to confluence in Dulbecco modified Eagle medium (Gibco catalog number 11965) supplemented with 10% fetal bovine serum (catalog number 16140) and 1% penicillin-streptomycin (Gibco catalog number 15070). Cells were plated to a density of 10 5 cells/well. Mouse cecal content was diluted 1:10 in sterile PBS, passed through a 0.22- m filter, and serially diluted to 10:6. Filtered samples were tested in duplicate with a corresponding control to which both antitoxin (Techlab catalog number T5000) and sample were added. A positive control of C. difficile TcdA (List Biologicals catalog number 152C) was used. Samples were incubated overnight at 37C, and the cytotoxic titer was determined as the reciprocal of the highest dilution that produced 80% cell rounding.

• Product #152C – Toxin A from Clostridium difficile

EAE induction and orexin A treatment:

EAE was induced by subcutaneous immunization in the flanks with 100µg of MOG₃₅₅₅ (GL Biochem, China) emulsified with complete Freunds adjuvant (CFA) supplemented with 5 mg/mL of Mycobacterium tuberculosis H37Ra (Difco, USA). In addition, mice received intraperitoneally (IP) 300 ng of pertussis toxin (List Laboratories, USA) on days 0 and 2 post-immunization. …

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)

…Under anesthesia with isoflurane, a total of 4 µL of 1% CTB (List Biological Labs, Campbell, CA) solution was injected slowly into LI 4 or LR 3 on the left side. The depth of the injection was 2-3 mm. FIG. 1. LI 4 (A) and LR 3 (B) in rat forefoot and hind foot respectively…

• Product #104 – Cholera Toxin B Subunit (Choleragenoid) from Vibrio cholerae in Low Salt

Briefly, we isolated a subset of birds in experimental cages the day before LPS injection, then dosed them the following morning with an intra-abdominal injection of 1 mg ml1 LPS from E. coli (O55:B5; List Biological Laboratories, Campbell, CA, USA) dissolved in PBS. …

• Product #203A – LPS from Escherichia coli O55:B5

Infections and stimulations:

DCs were infected or stimulated with innate agonists between day 4 and day 6 after differentiation. DCs were counted on day 4 and resuspended at 800,000 cell per ml in fresh medium with GM-CSF, IL-4, and polybrene (1 g/ml) and then reseeded into appropriate culture vessels. For most assays, DCs were infected at a density of 800,000 cells per ml by diluting virus in DC media (without cytokines or polybrene) to a final volume normalized to controls. Innate and inflammatory stimuli were used at the indicated concentrations: polyI:C (InvivoGen, 10 g/ml); LPS (List Biological Laboratories, INC, 1 ng/ml).

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/

Chemicals and Reagents:

… Pertussis toxin was purchased from List Biological Laboratories (Campbell, CA, USA) …

EAE in Mice:

Female C57BL/6 mice at 1012 weeks of age were immunized with subcutaneous injection of 200µg MOG35-55 peptide and 400-g mycobacterium tuberculosis H37Ra in a 200µL emulsion. Te mice received intraperitoneal injection of 500-ng pertussis toxin on Day 0 and Day 2. On Day 7 afer immunization or the onset of EAE symptoms, the mice were divided into groups and treated for 14 days. …

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)