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Proceedings Paper

Evaluation of monophosphoryl lipid A as an immune adjuvant for photodynamic therapy in a rat sarcoma model: preliminary results
Author(s): Michael D. Lucroy; Benjamin F. Edwards; Stephen M. Griffey; Bruce R. Madewell
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Paper Abstract

Photodynamic therapy (PDT) is a treatment option for several forms of human cancer, and like traditional chemotherapy and ionizing radiation therapy, PDT alone is not curative for some cases. Recent efforts have aimed at developing strategies for adjuvant therapy for PDT. Given the nature of PDT-mediated cell damage, immunotherapy is a promising adjuvant for long-term control of solid tumors. A candidate immune stimulant for use with PDT is monophosphoryl lipid A (MLA), a non-toxic fraction of the endotoxin molecule. The hypothesis is that adjuvant MLA immunotherapy with PDT will improve local tumor control and prevent growth of subsequently implanted tumor cells when compared to PDT alone. To date, no significant differences in circulating leukocyte populations or tumor infiltrating lymphocyte populations have been identified in 9L tumor-bearing F344 rats after systemic administrations of MLA. Likewise, no significant difference has been identified in local tumor control following PDT of 9L tumors with or without adjuvant MLA. Further results are pending.

Paper Details

Date Published: 22 June 1999
PDF: 6 pages
Proc. SPIE 3590, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems IX, (22 June 1999); doi: 10.1117/12.350983
Show Author Affiliations
Michael D. Lucroy, Univ. of California/Davis School of Veterinary Medicine (United States)
Benjamin F. Edwards, Univ. of California/Davis School of Veterinary Medicine (United States)
Stephen M. Griffey, Univ. of California/Davis School of Veterinary Medicine (United States)
Bruce R. Madewell, Univ. of California/Davis School of Veterinary Medicine (United States)


Published in SPIE Proceedings Vol. 3590:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems IX
Kenton W. Gregory; R. Rox Anderson; David S. Robinson; Reza S. Malek; Lou Reinisch; Darryl J. Bornhop; Kenneth Eugene Bartels; Hans-Dieter Reidenbach; Lloyd P. Tate; C. Gaelyn Garrett; Eugene A. Trowers; Aaron P. Perlmutter; Kenneth Eugene Bartels; Lawrence S. Bass; Darryl J. Bornhop; C. Gaelyn Garrett; Kenton W. Gregory; Nikiforos Kollias; Harvey Lui; Reza S. Malek; Aaron P. Perlmutter; Hans-Dieter Reidenbach; Lou Reinisch; David S. Robinson; Lloyd P. Tate; Eugene A. Trowers, Editor(s)

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