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Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
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Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
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Psychoneuroimmunology (PNI) is a multidisciplinary field that examines how psychological factors, particularly stress, interact with the immune system and impact physical health. Research in PNI has shown that chronic or traumatic stress can disrupt both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. These disruptions contribute to serious health conditions, including cardiovascular diseases.
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Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
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Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
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The neuro-immune oncology axis.

Fabien Vanden Abeele1, Michel Salzet2

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Cancer progression is influenced by the neuro-immune axis, where neural stem cells interact with immune cells. Targeting this communication offers new therapeutic strategies for cancer treatment.

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Area of Science:

  • Oncology
  • Neuroscience
  • Immunology

Background:

  • Cancer traditionally viewed as a genetic disease.
  • Emerging evidence highlights the tumor microenvironment's role, especially neuro-immune interactions.
  • Neural progenitor cells migrate from the central nervous system (CNS) to peripheral tumors, influencing cancer.

Purpose of the Study:

  • To review molecular and cellular mechanisms of the neuro-immune axis in cancer.
  • To examine how neural inputs shape immune evasion and tumor progression.
  • To discuss clinical relevance and therapeutic strategies targeting neuro-immune interactions.

Main Methods:

  • Review of existing literature on neuro-immune crosstalk in cancer.
  • Analysis of molecular signaling pathways (neurotransmitters, neuropeptides, ion channels).
  • Examination of specific cancer types (prostate, breast, lung, pancreatic).

Main Results:

  • CNS-derived neural progenitors establish networks and communicate with immune cells.
  • Neurotransmitter, neuropeptide, and ion channel signaling mediate cross-talk between nerves, immune cells, and cancer cells.
  • Tumor innervation correlates with prognosis and treatment response.

Conclusions:

  • Cancer can be viewed as a disease of disrupted neuro-immune communication.
  • Targeting the neuro-immune axis presents promising therapeutic opportunities.
  • Neuromodulatory drugs and nerve stimulation show potential for enhancing antitumor immunity.