Experimental compound, which has received orphan drug and pediatric rare disease designations from the FDA, displays effectiveness in treating symptoms of Autism and Alzheimers disease.
An extensive international study led by Tel Aviv University found that an experimental drug which has been awarded orphan drug designation by the FDA for future treatment of a rare development disorder can also treat a variety of symptoms relating to autism, intellectual disability, and Alzheimers disease.
The experimental drug, NAP, was discovered in the lab of Prof. Illana Gozes of the Tel Aviv University Sackler Medical Schools Department of Human Molecular Genetics and Biochemistry. In recent years, the FDA has granted the experimental drug with orphan drug designation and pediatric rare disease designation for treatment of a rare developmental disorder called ADNP syndrome, which can cause a variety of symptoms, among them, hallmark features are intellectual disability and autism spectrum disorder.
In the current study, a team of researchers led by Prof. Gozes developed an innovative lab model and found that NAP can be effective in treating a broad spectrum of symptoms of ADNP syndrome, which is caused by mutations in the ADNP gene which is essential to cerebral development and protecting cerebral brain cells. Previous studies showed that ADNP syndrome is related to Alzheimers disease and certain types of mental disabilities, developmental delays, and autism.
Prof. Illana Gozes. Credit: Jonathan Blum, Tel Aviv University
Ramot, Tel Aviv Universitys technology commerce company filed a number of patent applications to protect the technology and its implementation and, in collaboration with Prof. Gozes, is raising funds to finance further clinical research. Similarly, Ramot is in discussions regarding commercial collaboration with pharmaceutical companies. Were excited by this new discovery and believe that this is groundbreaking technology that will remedy a variety of symptoms and disabilities in a broad spectrum of orphan diseases, said Prof. Keren Primor Cohen, CEO of Ramot.
The study, which is the culmination of the MD/PhD student Dr. Gideon Carmons doctoral research, was joined by a team of researchers from Prof. Gozess lab: Dr. Shlomo Sergovich, Gal Hacohen-Kleiman, Inbar Ben-Horin-Hazak, Dr. Oxana Kapitansky, Alexandra Lubincheva, and Dr. Eliezer Giladi. The team was further joined by Dr. Moran Rubinstein, Prof. Noam Shomron, and Guy Shapira of TAUs Sackler Faculty of Medicine, and Dr. Metsada Pasmanik Chor of Tel Aviv Universitys George S. Wise Faculty of Life Sciences. Researchers from the Czech Republic, Greece, Germany, and Canada also participated. The article was published in the prestigious journal Biological Psychiatry.
Prof. Gozes explained that: NAP, in fact, comprises a short segment of the normal ADNP protein. We previously found that treatment using NAP corrects the function of human nerve cells afflicted with ADNP syndrome in a laboratory test-tube. In this study, we sought to examine the efficacy of NAP in treating various aspects of the syndrome using a model with the most harmful mutation, which allowed us to view brain development and facilitate remedying of behavioral problems.
The study, which examined a model using mice with ADNP syndrome, used objective methods to analyze behavior, electrical activity, and to further identify select protein contents in the brain. The researchers found that the mice suffering from ADNP syndrome demonstrated a broad spectrum of pathological outcomes, including increased rates of neonatal death immediately after birth, slowed development and aberrant gait, primarily among females, as well as poor voice communication.
Cerebral examinations demonstrated additional findings: A relatively small number of synapses the points of contact tween nerve cells, impaired electrophysiological activity demonstrating a low potential for normal cerebral arousal, as well as precipitates (aggregates) of the Tau protein in young mice, similar to those in the brains of elderly Alzheimers disease patients.
For most of these symptoms, the researchers examined the effect of the future medicinal substance NAP made of a short and normal segment of the ADNP protein, the same protein that is impaired because of the mutation. Prof. Gozes: In the past, we have found that NAP corrects impaired functioning of ADNP that has mutated in the nerve cell model in the culture. We now examined its effect in vivo in animals modeling the syndrome (ADNP mutation). To our amazement and joy, we discovered that treatment using NAP normalizes the functioning of these mice for most of the symptoms indicated above!
Researchers further sought to identify in the blood of the mice, a clear biological indicator of ADNP syndrome that will enable diagnosis of this severe disease and effective monitoring of treatment using a simple blood test. With the help of genetic sequencing technologies, they identified an anomaly in a manner characteristic only of females as well as a method for repair using NAP on five proteins (at the messenger RNA level). These findings matched the changes discovered in white blood cells of children suffering from ADNP syndrome. One of the indicators discovered is FOXO3 a protein with an important role in generating cerebral synapses and healthy aging.
Prof. Gozes summarized: In this study, we examined the effect of the ADNP genes most prevalent mutation in a broad spectrum of aspects and found extensive impairment in physical and cerebral functioning parallel to the symptoms of autism, developmental delay, mental disability, and Alzheimers disease in humans. Similarly, we examined the potential use of the NAP drug for treating these diseases, and discovered that it is effective against most of these symptoms in lab models. This study is an important milestone on the way to developing a drug, or drugs, that will help children with autism stemming from genetic mutations, as well as Alzheimers patients.
Reference: Novel ADNP Syndrome Mice Reveal Dramatic Sex-Specific Peripheral Gene Expression With Brain Synaptic and Tau Pathologies by Gidon Karmon, Shlomo Sragovich, Gal Hacohen-Kleiman, R. Anne McKinney, Moran Rubinstein and Illana Gozes, 27 September 2021, Biological Psychiatry.DOI: 10.1016/j.biopsych.2021.09.018
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Groundbreaking Experimental Compound Displays Effectiveness in Treating Symptoms of Autism and Alzheimers Disease - SciTechDaily
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