Advertisement

Recombinant Immunotoxins with Low Endotoxins for Clinical and Animal Studies

Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 907)

Abstract

Recombinant immunotoxin (RIT) contains the Fv portion of the antibody fused to the truncated form of toxin and are ongoing in clinical trials for cancer therapy. To obtain high yields of products, RITs are produced in Escherichia coli (E. coli). As the endotoxin came from E. coli cells and is harmful to animals, it is important to produce the RITs with low endotoxin. This section describes the protocols to produce RITs containing low level of endotoxins.

Key words

Immunotoxin Disulfide-stabilized Fv Endotoxin Protein purification Targeting therapy Immunotherapy 

Notes

Acknowledgments

The author thanks Dr. Ira Pastan, laboratory chief, and colleagues of the Laboratory of Molecular Biology for valuable discussions. This research was supported by the Intramural Research Program of the NCI, NIH, Center for Cancer Research

References

  1. 1.
    Pastan I, Hassan R, FitzGerald DJ, Kreitman RJ (2006) Immunotoxin therapy of cancer. Nat Rev Cancer 6:559–565PubMedCrossRefGoogle Scholar
  2. 2.
    Kreitman RJ, Wilson WH, Bergeron K, Raggio M, Stetler-Stevenson M, FitzGerald DJ et al (2000) Efficacy of the anti-CD22 recombinant immunotoxin BL-22 in chemotherapy-resistant hairy-cell leukemia. N Engl J Med 345:241–247CrossRefGoogle Scholar
  3. 3.
    Kreitman RJ, Wilson WH, White JD, Stetler-Stevenson M, Jaffe ES, Giardina S et al (2000) Phase I trial of recombinant immunotoxin anti-Tac(Fv)-PE38 (LMB-2) in patients with hematologic malignancies. J Clin Oncol 18:1622–1636PubMedGoogle Scholar
  4. 4.
    Hassan R, Bullock S, Premkumar A et al (2007) Phase I study of SS1P, a recombinant antimesothelin immunotoxin given as a bolus I.V. infusion to patients with mesothelin expression mesothelioma, ovarian, and pancreatic cancers. Clin Cancer Res 13:5144–5149PubMedCrossRefGoogle Scholar
  5. 5.
    Hwang J, FitzGerald DJ, Adhya S, Pastan I (1987) Functional domains of Pseudomonas exotoxin identified by deletion analysis of the gene expressed in Escherichia coli. Cell 48:129–136PubMedCrossRefGoogle Scholar
  6. 6.
    Brinkmann U, Reiter Y, Jung S, Lee B, Pastan I (1993) A recombinant immunotoxin containing a disulfide-stabilized Fv fragment (dsFv). Proc Natl Acad Sci USA 90:7538–7542PubMedCrossRefGoogle Scholar
  7. 7.
    Rudolph R, Lilie H (1996) In vitro folding of inclusion body proteins. FASEB J 50:49–56Google Scholar
  8. 8.
    Onda M, Willingham M, Wang Q, Kreitman RJ, Tsutsumi Y, Nagata S, Pastan I (2000) Inhibition of TNF alpha produced by Kupffer cells protects against the nonspecific liver toxicity of immunotoxin anti-Tac(Fv)-PE38, LMB-2. J Immunol 165:7150–7156PubMedGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Laboratory of Molecular BiologyCenter for Cancer Research, National Cancer Institute, National Institutes of HealthBethesdaUSA

Personalised recommendations