The endocannabinoid system in cancer-potential therapeutic target?

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“Endogenous arachidonic acid metabolites with properties similar to compounds of Cannabis sativa Linnaeus, the so-called endocannabinoids, have effects on various types of cancer. Although endocannabinoids and synthetic cannabinoids may have pro-proliferative effects, predominantly inhibitory effects on tumor growth, angiogenesis, migration and metastasis have been described. Remarkably, these effects may be selective for the cancer cells, while normal cells and tissues are spared. Such apparent tumor cell selectivity makes the endocannabinoid system an attractive potential target for cancer therapy. In this review we discuss various means by which the endocannabinoid system may be targeted in cancer and the current knowledge considering the regulation of the endocannabinoid system in malignancy.”  http://www.ncbi.nlm.nih.gov/pubmed/18249558

http://www.sciencedirect.com/science/article/pii/S1044579X07001058

Endocannabinoids as emerging suppressors of angiogenesis and tumor invasion (review).

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“The medicinal properties of extracts from the hemp plant Cannabis sativa have been known for centuries but only in the 90s membrane receptors for the Cannabis major principle were discovered in mammalian cells. Later on the endogenous ligands for the cannabinoid receptors were identified and the term ‘endocannabinoid system’ was coined to indicate the complex signaling system of cannabinoid receptors, endogenous ligands and the enzymes responsible for their biosynthesis and inactivation.

The ‘endocannabinoid system’ is involved in a broad range of functions and in a growing number of pathological conditions.

There is increasing evidence that endocannabinoids are able to inhibit cancer cell growth in culture as well as in animal models.

Most work has focused on the role of endocannabinoids in regulating tumor cell growth and apoptosis and ongoing research is addressed to further dissect the precise mechanisms of cannabinoid antitumor action. However, endocannabinoids are now emerging as suppressors of angiogenesis and tumor spreading since they have been reported to inhibit angiogenesis, cell migration and metastasis in different types of cancer, pointing to a potential role of the endocannabinoid system as a target for a therapeutic approach of such malignant diseases.

The potential use of cannabinoids to retard tumor growth and spreading is even more appealing considering that they show a good safety profile, regarding toxicity, and are already used in cancer patients as palliatives to stimulate appetite and to prevent devastating effects such as nausea, vomiting and pain.”  http://www.ncbi.nlm.nih.gov/pubmed/17342320

https://www.spandidos-publications.com/or/17/4/813

Marijuana compound could stop aggressive cancer metastasis

“A compound found in cannabis could halt the spread of many forms of aggressive cancer, scientists have claimed.

Researchers found that the compound, called cannabidiol, had the ability to “switch off” the gene responsible for metastasis in an aggressive form of breast cancer, the Daily Mail reported.

Importantly, this substance does not produce the psychoactive properties of the cannabis plant.

The team from the California Pacific Medical Center, in San Francisco, first spotted its potential five years ago, after it stopped the proliferation of human breast cancer cells in the lab, the report said.

They discovered that the compound had turned off the overexpression of ID-1, stopping them from travelling to distant tissues.

Other potentially treatable cancers are forms of leukaemia, lung, ovarian and brain cancers, which also have high levels of ID-1.”

http://in.news.yahoo.com/marijuana-compound-could-stop-aggressive-cancer-metastasis-064950912.html

The endocannabinoid system in the cancer therapy: an overview.

“The endocannabinoid system comprises the cannabinoid receptors type 1 (CB1) and type 2 (CB2), their endogenous ligands (endocannabinoids), and the proteins responsible for their biosynthesis and degradation. This ubiquitous signalling system, that has attracted a great deal of scientist interest in the past 15 years, regulates several physiological and pathological functions. In mammals, among other functions, the endocannabinoid is involved in nervous, cardiovascular, metabolic, reproductive and immune functions. Finally, yet importantly, endocannabinoids are known to exert important antiproliferative actions in a great number of tumor cells including breast, brain, skin, thyroid, prostate and colorectal. The following review describes our current knowledge on the effects of two of the most studied endocannabinoids (AEA and 2-AG) on various types of tumor and summarizes the possible mechanism of observed antitumor effects.”  http://www.ncbi.nlm.nih.gov/pubmed/21428888

http://www.eurekaselect.com/73874/article

The endocannabinoid system and cancer: therapeutic implication

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“The endocannabinoid system is implicated in a variety of physiological and pathological conditions (inflammation, immunomodulation, analgesia, cancer and others).

The main active ingredient of cannabis, Δ(9) -tetrahydrocannabinol (Δ(9) -THC), produces its effects through activation of CB(1) and CB(2) receptors. CB(1) receptors are expressed at high levels in the central nervous system (CNS), whereas CB(2) receptors are concentrated predominantly, although not exclusively, in cells of the immune system.

Endocannabinoids are endogenous lipid-signalling molecules that are generated in the cell membrane from phospholipid precursors. The two best characterized endocannabinoids identified to date are anandamide (AEA) and 2-arachidonoylglycerol (2-AG). Here we review the relationship between the endocannabinoid system and anti-tumour actions (inhibition of cell proliferation and migration, induction of apoptosis, reduction of tumour growth) of the cannabinoids in different types of cancer.

This review will focus on examining how activation of the endocannabinoid system impacts breast, prostate and bone cancers in both in vitro and in vivo systems. The therapeutic potential of cannabinoids for cancer, as identified in clinical trials, is also discussed.

Identification of safe and effective treatments to manage and improve cancer therapy is critical to improve quality of life and reduce unnecessary suffering in cancer patients. In this regard, cannabis-like compounds offer therapeutic potential for the treatment of breast, prostate and bone cancer in patients.

Further basic research on anti-cancer properties of cannabinoids as well as clinical trials of cannabinoid therapeutic efficacy in breast, prostate and bone cancer is therefore warranted.” http://www.ncbi.nlm.nih.gov/pubmed/21410463

“The available literature suggests that the endocannabinoid system may be targeted to suppress the evolution and progression of breast, prostate and bone cancer as well as the accompanying pain syndromes. Many in vitro and in vivo studies have shown that cannabinoids are efficacious in reducing cancer progression (i.e. inhibition of tumour growth and metastases as well as induction of apoptosis and other anti-cancer properties) in breast, prostate and bone cancer. Although this review focuses on these three types of cancer, activation of the endocannabinoid signalling system produces anti-cancer effects in other types of cancer.” http://onlinelibrary.wiley.com/doi/10.1111/j.1476-5381.2011.01327.x/full

THC From Cannabis Destroys Cancer Cells

“The study results strongly suggest that if taken regularly, cannabis oil may be able to induce remission in leukemia patients without the horrendous side effects typically associated with standard radio-chemical treatment options. Although this is only one such study, other similar studies have shown equally impressive results.

 Many of the active ingredients found in cannabis-derived drugs show exceptional promise in treating some of the greatest hurdles facing modern medical science. In addition to their aforementioned capacity for safely treating certain forms of deadly cancer, they also show great promise in alleviating autoimmune conditions such as rheumatoid arthritis, multiple sclerosis, and even inflammatory bowel disease. A growing number of experts also note their possible viability treating a range of neurological disorders including Alzheimer’s and Lou Gehrig’s disease.”

http://www.globalhealingcenter.com/natural-health/thc-from-cannabis-destroys-cancer-cells/

NBC News Reports that Cannabidiol (CBD) “Turns Off” the Cancer Gene Involved in Metastasis Findings by Scientists at California Pacific Medical Center gives Scientific Support for Cannabis Science Initiatives

“cannabidiol, (CBD), has the ability to “turn off” a gene that causes breast and other types of cancers to metastasize, according to the San Francisco Chronicle newspaper.

“What they found is that the cannabinoid turns off the overexpression of ID-1, which makes the cells lose their ability to travel to distant tissues. In other words, it keeps the cells more local and blocks their ability to metastasize. (spread to a new location) The researchers stressed cannabidiol works only on cancer cells that have these high levels of ID-1 and these do not include all cancerous tumors but, rather, aggressive, metastatic cells. But they’ve found such high levels in leukemia, colorectal, pancreatic, lung, ovarian, brain and other cancers.””

http://www.cnbc.com/id/49106127/NBC_News_Reports_that_Cannabidiol_CBD_Turns_Off_the_Cancer_Gene_Involved_in_Metastasis_Findings_by_Scientists_at_California_Pacific_Medical_Center_gives_Scientific_Support_for_Cannabis_Science_Initiatives

Cannabis plant extract ‘could stop aggressive cancers from spreading’

“A compound found in cannabis could halt the spread of many forms of aggressive cancer, scientists say.

Researchers found that the compound, called cannabidiol, had the ability to ‘switch off’ the gene responsible for metastasis in an aggressive form of breast cancer. Importantly, this substance does not produce the psychoactive properties of the cannabis plant.”

Read more: http://www.dailymail.co.uk/health/article-2206056/Cannabis-compound-stop-breast-cancer-spreading.html#ixzz29PKHhfoL
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Cannabis Science Announces Critical Cancer Patient Dr. Lynnice Wedewer, Ph.D., Cured Seven Times By Medical Cannabis

“Cannabis Science Inc. a pioneering US biotech company developing pharmaceutical cannabis products, is pleased to announce that it has been contacted by Lynnice Wedewer, Ph.D. who is a 34 year multiple cancer patient survivor who has been cured of 7 of her 8 cancers in a major part because of medical cannabis.

Dr. Wedewer wishes to share her story through Cannabis Science and help our case and education towards general acceptance of medical cannabis as a natural and viable treatment for cancer.”

 More: http://www.reuters.com/article/2011/06/29/idUS207485+29-Jun-2011+BW20110629

Cannabis Science Extracts Kill Cancer Cells In Cancer Patients Being Treated Through Its Licensed Distributor Rockbrook

“Cannabis Science, Inc. a pioneering U.S. biotech company developing pharmaceutical cannabis (marijuana derivative) products, is pleased to announce that numerous patients are reporting that Cannabis Science extract treatments are killing cancer cells.

Unlike most conventional cancer treatments, cannabis has an outstanding safety profile, and patients in states with medical marijuana laws are able to make an informed decision to legally try various cannabis preparations to determine what is most effective for their particular condition.

Some of these scientifically informed patients have chosen to self-administer Cannabis Science extracts supplied by Rockbrook to treat their own cancers. Cannabis Science is delighted that patients are reporting dramatic improvements in their conditions, including basal cell carcinoma, non-small cell lung cancer accompanied by COPD (chronic obstructive pulmonary disease), ovarian cancer, and glioma.”

More: http://www.reuters.com/article/2011/02/22/idUS223662+22-Feb-2011+BW20110222