Nanobio’s Genital Herpes Vaccine Demonstrates Efficacy in Guinea Pigs as Both a Prophylactic and a Therapeutic Vaccine
ANN ARBOR, Mich., (September 22, 2015) – NanoBio Corporation today announced that its intranasal nanoemulsion (NE) adjuvanted genital herpes vaccine has demonstrated efficacy in studies conducted in both the prophylactic and the therapeutic guinea pig model. Guinea pigs represent the primary animal model used to study genital herpes vaccines. The data was recently presented at the 40th Annual International Herpesvirus Workshop in Boise, ID.
Under the National Institute of Allergy and Infectious Diseases’ (NIAID) preclinical services program, researchers at the Cincinnati Children’s Hospital Medical Center investigated the potential of NanoBio’s intranasal NE glycoprotein vaccine in guinea pig challenge models. Using the prophylactic model, guinea pigs were administered an intranasal NE vaccine then subsequently challenged with the herpes simplex virus-2 (HSV2). In this study, the NE HSV2 vaccine prevented infection and viral latency in 92 percent of animals vaccinated, versus 8 percent in the no treatment arm. No adverse events were observed in any of the animals that received the NE vaccine.
In a separate therapeutic guinea pig study, animals were first infected with HSV2 then vaccinated with the intranasal NE vaccine. During the post-vaccination observation period, the NE HSV2 vaccine reduced recurrent lesions by 64 percent and viral shedding by more than 50 percent, as compared to animals that received no treatment. Of the animals receiving the NE vaccine, 53 percent did not shed any detectable virus. Again, no adverse events were observed in any of the animals that received the NE vaccine.
“The results of these studies demonstrate the potential impact and benefits of intranasal NE vaccines to prevent and treat sexually transmitted diseases. Based on the consistently positive data observed in four guinea pig studies conducted to date, we are planning to raise additional capital in 2016 to advance our NE-HSV2 vaccine candidate into Phase 1 clinical studies,” said David Peralta, Chief Executive Officer of NanoBio. “The use of intranasal NE vaccination elicits a mucosal immune response in addition to the systemic immunity generated by intramuscular vaccines, offering unique and significant advantages. A mucosal response is potentially critical to adequately protect against certain respiratory and sexually transmitted pathogens that enter the body across mucosal surfaces.”
About Genital Herpes
Genital herpes is a sexually transmitted disease most commonly caused by the herpes simplex virus-2 (HSV2). Infections are lifelong and often asymptomatic facilitating the spread of the disease amongst sexual partners and from mother to child during birth. Genital herpes is also associated with an increased risk of HIV acquisition. The disease is widespread in both developed and underdeveloped countries, and is a global health priority. Currently, there are no approved vaccines to prevent or treat genital herpes.
Headquartered in Ann Arbor, Michigan, NanoBio® Corporation is a privately-held biopharmaceutical company focused on developing and commercializing vaccines and anti-infective treatments derived from its patented NanoStat® technology platform. The company’s NanoStat® vaccine technology employs a novel oil-in-water nanoemulsion (NE) that can incorporate, deliver and adjuvant multiple antigen types. The NE adjuvant is effective when administered via intranasal or intramuscular vaccination. When applied intranasally, NE vaccines elicit both mucosal and systemic immunity.NanoBio is currently developing intranasal NE vaccines for several respiratory and sexually transmitted diseases, including pertussis, pandemic influenza, anthrax, prophylactic and therapeutic HSV2, chlamydia and HIV. In addition, the company has licensed its NE adjuvant to Merck for use in RSV and seasonal influenza vaccines.
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