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Marijuana shows potential in treating autoimmune disease

Date:
June 2, 2014
Source:
University of South Carolina
Summary:
Researchers have discovered a novel pathway through which marijuana's main active constituent, THC, can suppress the body's immune functions. The recent findings show that THC can change critical molecules of epigenome called histones, leading to suppression of inflammation.

Scientists have discovered a novel pathway through which marijuana can suppress the body's immune functions.
Credit: Ondrej Hajek / Fotolia

A team of University of South Carolina researchers led by Mitzi Nagarkatti, Prakash Nagarkatti and Xiaoming Yang have discovered a novel pathway through which marijuana's main active constituent, THC, can suppress the body's immune functions.

Their research has been published online in the Journal of Biological Chemistry.

Marijuana is the most frequently used illicit drug in the United States, but as more states legalize the drug for medical and even recreational purposes, research studies like this one are discovering new and innovative potential health applications for the federal Schedule I drug.

Marijuana is now regularly and successfully used to alleviate the nausea and vomiting many cancer patients experience as side effects to chemotherapy, combat the wasting syndrome that causes some AIDS patients to lose significant amounts of weight and muscle mass and ease chronic pain that is unresponsive to opioids, among other applications.

The university study has uncovered yet another potential application for marijuana, in the suppression of immune response to treat autoimmune diseases. The work builds on recent scientific discoveries that the environment in which humans live can actually trigger changes that occur outside of human DNA, but nevertheless can cause alterations to the function of genes controlled by DNA. These outside molecules that have the ability to alter DNA function are known collectively as the epigenome. In this study, the investigators wanted to find out if the tetrahydrocannabinol (THC) found in marijuana has the capacity to affect DNA expression through epigenetic pathways outside of the DNA itself.

The recent findings show that THC can change critical molecules of epigenome called histones, leading to suppression of inflammation. These results suggest that one potential negative impact of marijuana smoking could be suppression of beneficial inflammation in the body. But they also suggest that, because of its epigenetic influence toward inflammation suppression, marijuana use could be efficacious in the treatment of autoimmune diseases such as arthritis, lupus, colitis, multiple sclerosis and the like, in which chronic inflammation plays a central role.


Story Source:

The above story is based on materials provided by University of South Carolina. Note: Materials may be edited for content and length.


Journal Reference:

  1. X. Yang, V. L. Hegde, R. Rao, J. Zhang, P. S. Nagarkatti, M. Nagarkatti. Histone modifications are associated with Delta(9)-tetrahydrocannabinol-mediated alterations in antigen-specific T cell responses. Journal of Biological Chemistry, 2014; DOI: 10.1074/jbc.M113.545210

Cite This Page:

University of South Carolina. "Marijuana shows potential in treating autoimmune disease." ScienceDaily. ScienceDaily, 2 June 2014. <www.sciencedaily.com/releases/2014/06/140602150914.htm>.
University of South Carolina. (2014, June 2). Marijuana shows potential in treating autoimmune disease. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2014/06/140602150914.htm
University of South Carolina. "Marijuana shows potential in treating autoimmune disease." ScienceDaily. www.sciencedaily.com/releases/2014/06/140602150914.htm (accessed October 22, 2014).

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