Preclinical and clinical studies into the bioactivity of low-dose naltrexone (LDN) for oncotherapy
Na Qu1, Yiming Meng2, Mike K Handley3
1Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Institute and Hospital, No. 44, Xiaoheyan Road, Shenyang 110042, Liaoning Province, China.
Abstract:
Naltrexone (NTX) is a nonspecific opioid antagonist that exerts pharmacological effects on the opioid axis by blocking opioid receptors distributed in cytoplastic and nuclear regions. NTX has been used in opioid use disorder (OUD), immune-associated diseases, alcoholism, obesity, and chronic pain for decades. However, low-dose naltrexone (LDN) also exhibits remarkable inhibition of DNA synthesis, viability, and other functions in numerous cancers and is involved in immune remodeling against tumor invasion and chemical toxicity. The potential anticancer activity of LDN is a focus of basic research. Herein, we summarize the associated studies on LDN oncotherapy to highlight the potential mechanisms and prospective clinical applications.
Insights
Low-dose naltrexone (LDN) shows promise in cancer treatment by inhibiting cancer cell growth and remodeling the immune system. Further research is exploring its potential anticancer mechanisms and clinical applications.
Area of Science:
- Pharmacology
- Oncology
- Immunology
Background:
- Naltrexone (NTX) is a non-specific opioid antagonist used for opioid use disorder, alcoholism, obesity, and pain.
- Low-dose naltrexone (LDN) demonstrates significant inhibition of cancer cell DNA synthesis and viability.
- LDN also plays a role in immune modulation against tumor invasion and toxicity.
Purpose of the Study:
- To summarize current research on low-dose naltrexone (LDN) as a potential cancer therapy.
- To highlight the proposed mechanisms of action for LDN in oncotherapy.
- To discuss the prospective clinical applications of LDN in cancer treatment.
Main Methods:
- Review of existing scientific literature on low-dose naltrexone and cancer.
- Analysis of studies investigating LDN's effects on cancer cell functions.
- Examination of research on LDN's role in immune system modulation relevant to cancer.
Main Results:
- Low-dose naltrexone inhibits cancer cell proliferation and viability.
- LDN influences immune responses, potentially aiding in combating tumor invasion.
- Evidence suggests LDN has a role in managing chemical toxicity.
Conclusions:
- Low-dose naltrexone exhibits potential as an anticancer agent.
- Further basic research is warranted to elucidate LDN's anticancer mechanisms.
- Prospective clinical applications of LDN in oncotherapy require continued investigation.
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