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DISCUSSION PAPER: FUNCTIONS OF RNA IN IMMUNITY

This meeting has been an interesting blend of biochemistry, immunology, and medicine. The subject of “RNAs and immunity” seems to please neither the immunologists nor the biochemists. The former find it uncomfortable to work with molecules whose functions are not easily understood in relatively simple terms. RNAs are an oppressive burden and, from this point of view, are most conveniently dealt with as artifacts. The biochemist, on the other hand, finds this area lacking for other reasons: The complexity and heterogeneity of the cell populations involved, the failure in many cases to precisely define and identify the components and products of a reaction mixture, the lack of a more rigorous application of stoichiometric principles, and the semiquantitative nature of many of the assays make the biochemist uncomfortable. These comments would suggest that we abandon this area as having little potential. Nevertheless, the practical applications of these phenomena, as in the presentations this afternoon, and the imaginative application by Dr. Lawrence of “transfer factor” to the solution of intractable clinical problems suggest that we should pursue these studies; indeed, we would be negligent if we did not do so. Moreover, there are certain observations evolving that suggest that something important is now occurring. I shall mention only five, but there are others: