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Document<br />

VI. Conclusion<br />

Page 428<br />

The design of novel compounds to inhibit or manipulate the IL-1 system remains a daunting task. At this<br />

time, the design of immunomodulators for the IL-1 system is still in its infancy and has largely been<br />

confined to the use of whole or fragmented proteins or the identification of nonspecific small molecules.<br />

In addition, newer approaches have also been initiated and these include the use of antisense<br />

oligonucleotides, small molecules designed to compete with IL-1's binding to its receptor, ICE<br />

inhibitors, and intracellular signaling inhibitors. All such strategies show promise.<br />

<strong>Structure</strong>-<strong>based</strong> design has not been explicitly used in the design of agonists and antagonists of IL-1. But<br />

as of now we have the structures of IL-1α, IL-1β, and IL-1Ra. A new insight may be forthcoming once<br />

the complex crystallographic structure of one of the interleukin-1 molecules and its corresponding<br />

receptor molecule is available. This structural information, coupled with the anticipated IL-1 + IL-1R<br />

complex structure, will form the foundation for rational design of inhibitors with improved selectivity<br />

for the treatment of various IL-1-mediated diseases.<br />

Acknowledgements<br />

Our special thanks to Professor Russell Doolittle for his encouragement and support, and also to Dr.<br />

Mitch Lewis for providing us with the very high-resolution coordinates of IL-1α. We gratefully<br />

acknowledge San Diego Super Computing Center for their assistance and support in providing valuable<br />

software and high-power computing time. We thank Dr. Donald Kyle for his valuable comments. We<br />

also thank Dr. Per Kraulis for providing us the latest version of MOLSCRIPT, Dr. Anthony Nicholls for<br />

the program GRASP, Dr. Rob Russell for the structural alignment, and Professor Lynn Ten Eyck and<br />

Dr. Jerry Greenberg for their help.<br />

References<br />

1. Dinarello CA. Biological basis for interleukin-1 in disease. Blood 1996; 87- 6:2095–2147.<br />

2. Dinarello CA. Interleukin-1 is produced in response to infection and injury. Rev infect Dis<br />

1984;6:51–56.<br />

3. Oppenheim JJ, Kovacs EJ, Matsushima K, Durum SK. There is more than one interleukin 1. Immunol<br />

Today 1986;7:45–56.<br />

4. Durum KS, Oppenheim JJ, Neta R. Immunophysiologic role of interleukin-1. In: Oppenheim JJ,<br />

Shevach EM, eds. Immunophysiology. New York: Oxford University Press, 1990:210–225.<br />

http://legacy.netlibrary.com/nlreader/nlReader.dll?bookid=12640&filename=Page_428.html [4/9/2004 12:10:04 AM]

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