Cancer Immunology, Immunotherapy

, Volume 4, Issue 1, pp 61–68 | Cite as

Regression of line-10 hepatocellular carcinomas following treatment with water-soluble, microbial extracts combined with trehalose or arabinose mycolates

  • C. A. McLaughlin
  • S. M. Strain
  • W. D. Bickel
  • M. B. Goren
  • I. Azuma
  • K. Milner
  • J. L. Cantrell
  • E. Ribi
Original Articles
Received:
Accepted:

Summary

Intratumor injections of the aqueous phase of phenol-water extracts of Re mutant Salmonella typhimurium (Re glycolipid) in combination with trehalose dimycolate at dose levels of 150 to 15 μg were consistently and highly effective (65–93%) in producing regression of line-10 tumors in strain-2 guinea pigs. We observed that the rate of regression was more rapid than that seen after treatment with cell walls from Mycobacterium bovis strain Bacillus of Calmette and Guèrin (BCG). Arabinose mycolate could be substituted for trehalose dimycolate in the Re glycolipid-mycolate mixture without appreciably compromising antitumor activity, providing that the level of arabinose mycolate was not reduced below 15 μg. In addition to the Re glycolipid preparation, similarly prepared aqueous extracts from Mycobacterium bovis strain BCG and strain AN5 in combination with trehalose dimycolate also possessed tumor-regressive activity. The activity of these last extracts was reduced when the arabinose mycolate was substituted for the trehalose dimycolate. The aqueous extract of a rickettsia, Coxiella burnetii, in combination with either trehalose dimycolate or arabinose mycolate was also active (50 and 80% tumor regression rates, respectively). Intracutaneous administration of Re glycolipid or aqueous extracts from BCG in combination with trehalose or arabinose mycolates did not produce life-threatening, clinical signs of toxicity in young mice. If additional toxicity studies demonstrate that adverse side effects can be satisfactorily controlled, these watersoluble extracts may prove beneficial in the treatment of spontaneous tumors of humans and other animals.

Keywords

Trehalose Aqueous Extract Arabinose Strain Bacillus Intratumor Injection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • C. A. McLaughlin
    • 1
  • S. M. Strain
    • 2
  • W. D. Bickel
    • 1
  • M. B. Goren
    • 3
  • I. Azuma
    • 4
  • K. Milner
    • 1
  • J. L. Cantrell
    • 1
  • E. Ribi
    • 1
  1. 1.U.S. Department of Health, Education, and Welfare, Public Health Service, National Institutes of HealthNational Institute of Allergy and Infectious Diseases, Rocky Mountain LaboratoryHamiltonUSA
  2. 2.Hamilton Biochemical Research LaboratoryHamiltonUSA
  3. 3.National Jewish Hospital and University of Colorado School of MedicineDenverUSA
  4. 4.Department of Internal MedicineOsaka University, Medical SchoolOsakaJapan

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