Treatment with cannabinoids, either THC, the main marijuana-derived It has been previously reported that a high percentage of tumor-bearing MMTV-neu .. Anti-CB1 receptor antibody was generously donated by Dr. Ken Mackie, .. Guzman M, Mechta-Grigoriou F, Sanchez C. JunD is involved in the. A major discovery in cancer in cannabinoid use in cancer treatment is its ability in .. A recent report showed that FAAH is also over-expressed in prostate cancer cells .. Velasco G, Sanchez C, Guzman M. Towards the use of cannabinoids as Kaminski NE, Schatz AR, Gopher A, Almog S, Martin BR, Compton DR, et al. No other forms of treatment were used while taking the oil. The following is a video on YouTube which profiles Dr Christina Sanchez, Dr Donald Tashkin and Dr Donald Abrams and their findings on cannabis and cancer. used cannabis oil to fight their cancer have reported that it takes around 2 weeks.
Cancer Reports on and Dr. Cannabinoids Treatment Sanchez
Studies show that cannabinoid receptors are involved in differentiation of neural progenitors from ectoderm and hematopoietic progenitors from mesoderm. CB1 and CB2 receptor activation modulate proliferation and differentiation of daughter progenitors. It involved partial regulation by cannabinoid receptors leading to oxidative stress, necrosis coupled with apoptosis.
These open further investigation on the function of cannabinoids and the link between stem cell and tumor progression. Increased ROS production has been associated with triggering of apoptosis [ ]. Id-1, an inhibitor of basic helix-loop-helix transcription factors, has recently been shown to be a key regulator of the metastatic potential of breast and additional cancers [ - ]. The combination of cannabinoids and gemcitabine, a nucleoside analogue used in cancer chemotherapy, synergistically inhibit pancreatic adenocarcinoma cell growth by a ROS-mediated autophagy induction without affecting normal fibroblasts [ ].
Cannabidiol CBD -induced endoplasmic reticulum stress mediated cell death of MDA-MB breast cancer cells, with the coexistence of autophagy and apoptosis [ 63 ]. In primary lymphocytes, treatment with CBD induced caspase 8 induced apoptosis which was mediated by oxidative stress. Similar result has been reported in glioma cells where CBD causes oxidative stress and higher enzymatic activities of glutathione reductase and glutathione peroxidase. KM induced mitochondrial depolarization, cleaved caspase 3, significant cytoskeletal contractions, and redistribution of the Golgi-endoplasmic reticulum structures in U87MG human GBM cells [ ].
Cancer is a type of inflammatory disease, where immune cells infiltrate into the tumor site and secrete factors which enhance the prospects of proliferation, angiogenesis and metastasis [ ].
Hence, it is important to identify anti-cancer agents that target the immune related cancer environment. In glioma, WIN, caused accumulation of ceramide which is essential for cell death and it also had anti-inflammatory effects [ ]. Cannabinoids exert a direct anti-proliferative effect on tumors of different origin.
They have been shown to be anti-migratory and anti-invasive and inhibit MMPs which in turn degrade the extra-cellular matrix ECM , thus affecting metastasis of cancer to the distant organs.
Also, cannabinoids modulate other major processes in our body like energy metabolism, inflammation, etc. These data are derived not only from cell culture systems but also from more complex and clinically relevant animal models. Before cannabinoids could be used in clinical trials, there is need to explore more knowledge on several issues such as anti-tumorigenic and anti-metastatic mechanisms as well as which type of cancer patient populations would be more responsive for cannabinoid based therapies.
Data presented in this review suggest that cannabinoids derived from different sources regulate differently signaling pathways, modulate different tumor cell types and host physiological system.
It is important to understand which of the cannabinoid receptors are expressed and activated in different tumors as each receptor follows a different signaling mechanism.
Furthermore, endocannabinoids- AEA and 2-AG are broken down into secondary metabolites like prostaglandin PGE 2 and epoxyeicosatetraenoic acid EE which enhance tumor growth and metastasis in diverse cancer types. Understanding the exact signaling by which cannabinoids function will eventually lead to targeted clinical approach. Also, the difference in cellular response to cannabinoids in different cancer types might be due to the effect of the tumor environment which involves inflammatory cells, fibroblasts, endothelial cells, macrophages, etc.
Thus, there is a need for an integrative understanding of the role of cannabinoids with respect to the tumor and its microenvironment. The diversity of affecting multiple signaling pathways might pave way for developing cannabinoids that selectively obstruct a particular pathway, thus opening avenues for specific targeted treatments.
Moreover, cannabinoids are more specific to cancer cells than normal cells. The administration of single cannabinoids might produce limited relief compared to the administration of crude extract of plant containing multiple cannabinoids, terpenes and flavanoids.
Thus, combination of cannabinoids with other chemotherapeutic drugs might provide a potent clinical outcome, reduce toxicity, increase specificity and overcome drug resistance complications. Additional findings in in vitro and in vivo models are needed to support studies at preclinical setting. The authors disclose no competing interests.
National Center for Biotechnology Information , U. Journal List Oncotarget v. Published online Jul Author information Article notes Copyright and License information Disclaimer. Received May 19; Accepted Jul This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This article has been cited by other articles in PMC. Abstract The pharmacological importance of cannabinoids has been in study for several years. Cannabinoid receptors, cannabinoid agonists, cancer, signaling. Cannabinoid and its receptor Cannabinoids can be classified into three groups based on their source of production; endogenous cannabinoids endocannabinoids , phytocannabinoids and synthetic cannabinoids Fig.
Table I Cannabinoid's structure and its role in different physiological processes. Docosatetraenyl ethanolamide CB1 agonist neuromodulatory and immunomodulatory [ ]. Oleamide CB1 agonist neuromodulatory and immunomodulatory [ ]. Open in a separate window. Cannabinoids and their classification This figure illustrates how cannabinoids are divided into three main categories according to their availability in nature.
Endogenous cannabinoids Endogenous cannabinoids which are produced in our body include lipid molecules containing long-chain polyunsaturated fatty acids, amides, esters and ethers that bind to CB1 or CB2 receptors. Phytocannabinoids Phytocannabinoids are only known to occur naturally in significant quantity in the cannabis plant, and are concentrated in a viscous resin that is produced in glandular structures known as trichomes.
Synthetic cannabinoids Synthetic cannabinoids have been extensively used as a pharmacological agent, both in vitro and in vivo , to obtain more detailed insight of cannabinoid action, in order to evaluate their potential clinical use. Cannabinoid mediated signaling in cancer cells Cannabinoids activate CB1 or CB2 receptor which in turn modulates diverse signaling targets.
Table II Role of cannabinoid in different cancers and its associated signaling. Cannabinoids Anti-cancer effect and its mechanism of action Anandamide 1 Breast cancer: Suppression of nerve growth factor Trk receptors and prolactin receptors Prostate cancer: Attenuates mechanical hyperalgesia HU 1 Prostate cancer: MMPs pathway 3 Skin cancer: Mitogenic at low doses 4 Glioma: Role of cannabinoids in regulation of cancer growth One of the important aspects of an effective anti-tumor drug is its ability to inhibit proliferation of cancer cells.
Cannabinoids and breast cancer Breast cancer is one of the most common human malignancies and the second leading cause of cancer-related deaths in women, and its incidence in the developing world is on the rise [ 40 - 41 ]. Cannabinoids and prostate cancer Prostate cancer is the most common malignancy among men of all races and is one of the leading causes of cancer death in this population. Cannabinoids and lung cancer Lung cancer has one of the highest mortality rates among cancer-suffering patients.
Cannabinoids and skin cancer Melanoma is the mainly cause of skin cancer—related deaths worldwide. Cannabinoids and pancreatic cancer Pancreatic cancer is one of the most aggressive and devastating human malignancies.
Cannabinoids and bone cancer Chondrosarcoma and osteosarcoma are the most frequent primary bone cancers [ 89 ]. Cannabinoids and glioma Gliomas are the most important group of malignant primary brain tumors and one of the most aggressive forms of cancer, exhibit high resistance to conventional chemotherapies.
Cannabinoids and oral cancer Oral cancer is mainly occurs in the mouth including lips, tongue and throat. Cannabinoids and head and neck cancer Marijuana smoking increases the incidence of head and neck cancer in young people but its constituent, cannabinoids have anti-tumor properties.
Cannabinoids and thyroid carcinoma Thyroid carcinoma is the most aggressive form which occurs in thyroid gland. Role of cannabinoids in pro-metastatic mechanisms like angiogenesis, migration and invasion Migration and invasion are characteristic features of cancer cells.
Role of cannabinoids in stemness and cancer Cancer stem cells CSC are part of the tumor cell population. Role of cannabinoids in immune environment and cancer Cancer is a type of inflammatory disease, where immune cells infiltrate into the tumor site and secrete factors which enhance the prospects of proliferation, angiogenesis and metastasis [ ].
Footnotes The authors disclose no competing interests. Medical use of cannabis. Harvey Lecture, February 19, Bull N Y Acad Med.
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Cannabidiolic acid, a major cannabinoid in fiber-type cannabis, is an inhibitor of MDA-MB breast cancer cell migration.
Nevalainen T, Irving AJ. GPR55, a lysophosphatidylinositol receptor with cannabinoid sensitivity? Curr Top Med Chem. Insights from transgenic mouse models of ERBB2-induced breast cancer. Cannabidiol as potential anticancer drug. Br J Clin Pharmacol. Ramer R, Hinz B. Currently, several clinical studies using cannabinoids in cancer therapy are registered at http: An Israeli group is studying the use of cannabis extracts cannabidiol in patients whose cancers are resistant to the usual chemotherapy protocols NCT Two more studies in the preliminary stages include the safety of dexanabinol in patients with advanced cancers NCT, NCT and cannabis high cbd concentration for pain and inflammation in lung carcinomas NCT When a patient is referred to our outpatient clinic with a request for medical cannabis, several questions come to mind: Most of our patients have either tried medical cannabis or read about its role in symptom control.
Those who have tried it recreationally or for medical purposes can accurately reflect on the benefits or the adverse effects experienced, which makes the discussion somewhat easier. Those who have little knowledge and less experience require a complete discussion with respect to the benefits, the possible adverse effects, the process of application and authorization, and the cost which is borne by the patient, because it is not covered by provincial or private medical insurance.
Table iii lists our contraindications to authorization, which are similar to those published by Health Canada 70 , the College of Family Physicians of Canada 71 , and the Canadian Medical Protective Association It should be noted that no special license or additional certification is necessary to authorize the use of medical cannabis, but a working knowledge of cannabis as already presented is helpful for oncology professionals who are considering a patient request.
Once the decision is made to support authorization, the choice of which licensed producer and product to use can be somewhat difficult for some patients. The more than 30 licensed producers list more than products for sale, which can be a problem for those who do not have experience with cannabis or patients who might be elderly or excessively fatigued.
We do not advise that patients smoke the dried product; rather, they should vaporize, which is likely safer in the long run We also advise neophytes to choose a product that has a balanced thc: Cannabinoid proportions can be guided by available efficacy data summarized in Table iv. Once patients have started to use the product and document the effects, the thc: Titration of dose should follow the effect on the symptom in question for example, pain reduction, nausea control.
Follow-up with patients is essential to determine benefits and any adverse effects, questions about use or strain selection, and outcomes. Certainly, if the adverse effects are not tolerable, then an alternative therapy should be considered. If the patient is not getting the desired symptom control, then some dose modification might be necessary. Discontinuation of cannabis should be considered if an adequate trial does not result in the desired outcome as determined by the treating team or the patient.
Inter-professional collaboration is the new paradigm under which modern health care operates Research has demonstrated that inter-professional collaboration is enabled and promoted by inter-professional education, especially at the undergraduate level 79 , Although physicians ultimately authorize and prescribe cannabinoid therapies, valuable insights and inputs about achieving optimal patient outcomes can be derived from other members of the health care team, including nurses, social workers, rehabilitation therapists, and pharmacists.
Furthermore, pharmacies are designed to ensure proper storage and security of medical products. Pharmacists are also well positioned to comprehensively counsel patients and caregivers on the optimal methods of opioid and by extension, cannabis storage and disposal so as to limit diversion and unintentional exposure Moreover, given the emergence of cannabinoids as a novel therapeutic class, cannabinoid education for medical professionals as well as for patients and caregivers should be conducted per the principles of inter-professional education Industrialized countries are experiencing exponential increases in the utilization of opioids 84 , Major public health issues are emerging as a result, not the least of which relate to drug diversion, opioid addiction, and death from opioid overdose 84 , Currently, opioids remain the mainstay of cancer pain management, and increased cancer survival translates into patients using opioids for longer periods of time High-dose and long-term opioid therapy in cancer patients is becoming a concern, given observed risks such as poly-endocrinopathy, osteoporosis, and immunosup-pression Preclinical studies have demonstrated that certain opioids—such as codeine, morphine, methadone, and remifentanil—are associated with increased morbidity and mortality attributable to worsening of cancer and infections Opioid-induced hyperalgesia syndrome is also being reported with increased incidence, especially in patients with advanced cancer and escalating pain Thus, it behooves physicians to explore options that will allow for improved overall pain relief while curbing the overuse of opioids.
Observational studies in advanced cancer cohorts have demonstrated that cannabinoid therapies are associated with opioid-sparing and improved analgesia Published data on the addiction potential for recreational cannabis reflects a risk of 9.
Finally, a British study showed that the overall harm score for user and society for recreational cannabis score: Because medical cannabis generally tends to have a higher ratio of cbd to thc , it would be expected to be associated with a lower predilection to diversion, less addiction potential, and lower overall harm scores than those for recreational cannabis The integration and broader utilization of cannabinoid therapies within the domain of oncology including palliation carries the potential not only for improved health care outcomes for patients but also for economic savings and greater safety for society 90 , Patient reports of improvement in quality of life, especially for those undergoing intensive treatment regimens, could be key to patients continuing with lifesaving or life-prolonging therapies.
Cannabinoids might be able to help patients throughout their disease trajectory, but evidence about the ideal timing for cannabinoid initiation is lacking. More research will guide oncology and palliative care teams in their pursuit of excellence in cancer and symptomatic care. VM has presented educational activities supported by Tweed, Bedrocan, and Mettrum.
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Cannabis and Cancer: How “Marijuana” Helps the Body Heal
Sanchez and her team have been studying cancer and cannabinoid treatment, (cancer cells) were dying in the clean way,” Dr. Sanchez says. Read 58 publications, and contact Cristina Sanchez on ResearchGate, the effects of cannabinoids on some cancer-associated symptoms, a large body of evidence Here we report the in vivo antitumor effectiveness of this immunotoxin on. Cannabinoid treatments for cancer pain have been studied in a few randomized trials, but the evidence very few reports of cannabinoid use in those situations have been published, and the reports that exist To quote Dr. Donald Abrams28 : .. Velasco G, Sanchez C, Guzman M. Anticancer mechanisms of cannabinoids.