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HSV1716 is a first generation oncolytic virus developed by the Glasgow Institute of Virology, and subsequently by Virttu Biologics (formerly Crusade Laboratories, a spin-out from The Institute of Virology), to selectively destroy cancer cells. The virus has the trade name SEPREHVIR. It is based on the herpes simplex virus (HSV-1).
Healthy individuals can be infected with the virus and show no signs or symptoms, due to the immune system's ability to keep the infection in check. Infection is of particular concern to the immunocompromised. Cancer patients receiving chemotherapy, AIDS patients, and organ transplant patients are all at a high risk of showing signs of infection.
The herpes simplex virus type 1 (HSV-1) mutant 1716 lacks both copies of the ICP34.5 gene, and as a result is no longer able to replicate in terminally differentiated and non-dividing cells but will infect and cause lysis very efficiently in cancer cells, and this has proved to be an effective tumour-targeting strategy.
Sometimes, the viruses cause mild or atypical symptoms during outbreaks. However, they can also cause more troublesome forms of herpes simplex. As neurotropic and neuroinvasive viruses, HSV-1 and -2 persist in the body by hiding from the immune system in the cell bodies of neurons, particularly in sensory ganglia.
Herpes simplex, often known simply as herpes, is a viral infection caused by the herpes simplex virus. [5] Herpes infections are categorized by the area of the body that is infected. The two major types of herpes are oral herpes and genital herpes, though other forms also exist. Oral herpes involves the face or mouth.
Earlier treatment (within 48 hours of symptom onset) improves the chances of a good recovery. Rarely, treated individuals can have relapse of infection weeks to months later. There is evidence that aberrant inflammation triggered by herpes simplex can result in granulomatous inflammation in the brain, which responds to steroids. [16]
Eventually, it may cause mucoepidermoid carcinoma and possibly other malignancies [6] such as prostate cancer, [7] [8] breast cancer, [9] ovarian cancer [10] and glioblastoma. [11] [12] HCMV is found in all geographic locations and all socioeconomic groups, and infects between 60% and 70% of adults in the first world and almost 100% in the ...
Herpes esophagitis is a viral infection of the esophagus caused by Herpes simplex virus (HSV). While the disease most often occurs in immunocompromised patients, including post- chemotherapy , immunosuppression with organ transplants [ 1 ] and in AIDS , [ 2 ] herpes esophagitis can also occur in immunocompetent individuals.