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Bagaimana
senyawa ganja dapat memperlambat pertumbuhan tumor
How cannabis compound could slow tumor growth
Date:
July 14,
2014
Source:
University of East Anglia
Summary:
Scientists have shown how the main psychoactive
ingredient in cannabis, THC, could reduce tumor growth in cancer patients. New
research reveals the existence of previously unknown signaling platforms which
are responsible for the drug's success in shrinking tumors.
...........................
Scientists at the University of East Anglia have shown how
the main psychoactive ingredient in cannabis could reduce tumor growth in
cancer patients.
Research
published today reveals the existence of previously unknown signaling platforms
which are responsible for the drug's success in shrinking tumours.
It is hoped
that the findings could help develop a synthetic equivalent with anti-cancer
properties.
The research
was co-led with the Universidad Complutense de Madridin, Spain. The team used
samples of human breast cancer cells to induce tumours in mice. They then
targeted the tumours with doses of the cannabis compound THC
(Tetrahydrocannabinol). They found that two cell receptors in particular were
responsible for the drug's anti-tumour effects.
Dr Peter
McCormick, from UEA's school of Pharmacy, said: "THC, the major active
component of marijuana, has anti-cancer properties. This compound is known to
act through a specific family of cell receptors called cannabinoid receptors.
However, it was unclear which of these receptors were responsible for the
anti-tumour effects of THC.
"We
show that these effects are mediated via the joint interaction of CB2 and GPR55
-- two members of the cannabinoid receptor family. Our findings help explain
some of the well-known but still poorly understood effects of THC at low and
high doses on tumour growth.
"There
has been a great deal of interest in understanding the molecular mechanisms
behind how marijuana, and specifically THC, influence cancer pathology.
"There
has also been a drive in the pharmaceutical industry to create synthetic
equivalents that might have anti-cancer properties.
"By
identifying the receptors involved we have provided an important step towards
the future development of therapeutics that can take advantage of the
interactions we have discovered to reduce tumour growth."
Dr McCormick
added that cancer sufferers should not be tempted to self-medicate.
"Our
research uses an isolated chemical compound and using the correct concentration
is vital. Cancer patients should not use cannabis to self-medicate, but I hope
that our research will lead to a safe synthetic equivalent being available in
the future."
Story
Source:
The above
story is based on materials provided by University of East Anglia. Note: Materials may be edited
for content and length.
Journal
Reference:
- E. Moreno, C. Andradas, M. Medrano, M. M. Caffarel, E. Perez-Gomez, S. Blasco-Benito, M. Gomez-Canas, M. R. Pazos, A. J. Irving, C. Lluis, E. I. Canela, J. Fernandez-Ruiz, M. Guzman, P. J. McCormick, C. Sanchez. Targeting CB2-GPR55 Receptor Heteromers Modulates Cancer Cell Signaling. Journal of Biological Chemistry, 2014; DOI: 10.1074/jbc.M114.561761