CLASS DISCUSSION ON PLANT-MADE-PHARMACEUTICALS (PMPs): APR 16, 2009

What, if anything, is wrong with "pharming"?

In October 2002, LA Weekly published a story about "pharming" gone awry: corn that had been genetically modified to incorporate a vaccine for pigs was found growing in a field of soybean being grown for human consumption. The corn, which should have been destroyed after harvesting, apparently had germinated (="volunteer") along with the next season's crop, soybean.  The USDA ordered the soybean crop to be confiscated and then destroyed, so as to prevent contamination of the food supply in the market.

This incident led to a great deal of discussion and controversy regarding the safety of "pharming" and the adequacy of regulation governing it.  The USDA then made some changes in regulations.

In December 2005, an audit report (pdf) on the APHIS, the USDA regulatory body, found that APHIS efforts to regulate GM crops were inadequate.  In particular, they pointed out issues with high-risk crops, such as those that produce pharmaceutical and industrial compounds.

In our class discussion, we will examine the molecular, organismal, ecological and societal issues surrounding these events in order to develop an informed understanding of the fiasco and subsequent events surrounding the development of Plant-Made-Pharmaceuticals (PMPs).

A major goal is to encourage you to think about issues so as to identify the level at which the "problem" (if any) lies.  Is it at the organismal level? Then the solution has to be sought at that level, and not the molecular one.  Does the problem involve regulatory issues (societal)? Then the solution should be sought at that level, and not in biology.

People make unjustified extrapolations all the time without thinking twice about it. In this exercise, you want to think at least two, if not more, times before extrapolating between levels of organization. 

This means that you should be familiar with key details at different levels.

Know about the "pharmed" corn
Read this link to a brief description of the PMP.

You will find additional information on the patent, and issues that surround the development of PMPs.
[Prodigene itself seems to have disappeared into thin air!]

The Fiasco and after
Read these links to newspaper articles on the continuing saga of "pharmacrops," starting with the most recent reports and ending with the article that first broke the story.  Read enough to understand what happened in 2002.
To have some idea of developments since then, read this article regarding
the audit report
on the USDA-APHIS.

And for legal actions across the US: Hawaii, Oregon.

General Background Material:
What are "pharmacrops"= Plant made pharmaceuticals (PMP)?
FAQ on Genetically Engineered Organisms in Agriculture (Center for Science in the Public Interest)
Bio-pharming: (Colorado State University)
Sensible pharmaceutical production (Union of Concerned Scientists)
Biopharm: Issues and News Analysis (Dr Foley, Univ Wisc., 2002)
GM-Bipharm watch (Earthjustice)

What is genetic engineering?

The Union of Concerned Scientists (UCS) have brief accounts of biotechnology, genetic engineering, and other such exciting matters; for details on techniques, look at these UCS and UCDavis sites.  

Before class

1. Read the accounts given above

2. Be able to answer these questions about the particular incidents covered:

What was genetically engineered into the corn?
What were the steps involved in genetically engineering the corn?
Where does the pharmaceutical accumulate (in the cell, in the plant)?
How is this enabled?
What happened to the harvested corn?
What is a "volunteer"?
How is soybean involved in the fiasco? What happened to the soybean crop?
Did these incidents affect regulations that govern the testing and release of PMP's?
What were the changes, if any?

Write a summary or make a figure (or both) to describe the essential features of the genetically manipulated crop  to a lay person who does not know much about this technology. Try it out on such a person (e.g., your uncle).

3. Identify each of these steps/events to the appropriate level of organization:

Identify to the molecular, biochemical, cellular, organismal, ecological or societal level.
(Look here (pdf) for my analysis of a complex and controversial issue, the introduction of Bt cotton in India, and here to check out what's been happening since then)

4. Identify unexplored or problematic issues at any of the steps:

This includes complex biological issues (e.g., phenotypic expression of a series of genetic steps), as well as problems with the regulatory process identified by newspaper reports and the audit report mentioned above.

 Write down all of these points.

In class, April 16

There will be a discussion on this topic.

You will assigned one of the following roles in one of several groups of five: pharmaceutical representative; university scientist (declare any affiliations you might have with the pharmaceutical company); USDA representative; local government representative; member of the public.

In the morning, you will talk within your group to make sure that you can answer the questions under (2) above. You  should  be prepared to present this understanding to the class.

In the afternoon, you will take on 'your' role within your group and make the strongest arguments possible for 'your' position.  Following these discussions, your group should make a decision about whether or not, and under what conditions, you wish to allow the development, testing and cultivation of PMP's in your county.  You should be able to explain why you came to this decision.

Finally, re-visit the points you listed under 1-4 above. Did you change your mind about any of them?

Link to my web page on related topics                                   
     


[E&E]              [Home Page]                 [Research]                [Teaching]                   [Plants]                 [Science, Society]                 [Other interests
 

R. Geeta                                                                                                                                        This page last updated on January 30, 2009