For several years now scientists seeking a cause and
potential cure for autism spectrum disorders have turned their attention and
focus to the brain as it holds the key to understanding the puzzling mystery
behind common autism symptoms and characteristics. While some scientists might be trying to map
the entire brain to better understand its unique circuitry, others are trying
to understand the various genes, neurons and chromosomes, and how they are all
suppose to interact within normal brain functioning. The process has already started with
comparing normal functioning brains with those of individuals on the autism
spectrum, and over the years great strides have been made with mapping and
unraveling deficiencies in functioning. In some cases scientist have attempted
to replicate autism symptoms and characteristics in mice as a means to study
various treatments in an attempt to find a cure.
A recent study discovered that injections of an
agent called “GRN-529” into mice reduced autism like symptoms. Specifically, agent “GRN-529” reduced repetitive behaviors and increased
social interaction among the mice. Another
study involving mice bred to harbor autism like behaviors found a deletion in a
gene called “SHANK3”, which is located in chromosome 22. What is “SHANK3” you ask? According to the National Institute on Health
(2013), “The SHANK3 gene provides instructions for making a protein
that is found in many of the body's tissues but is most abundant in the brain. The
SHANK3 protein plays a role in the functioning of synapses, which are the
connections between nerve cells (neurons) where cell-to-cell communication
occurs. Within synapses, the SHANK3 protein acts as a scaffold that connects
neurons, ensuring that the signals sent by one neuron are received by another.”
There is
still a lot of research to be conducted on agent “GRN-529” and “SHANK3” gene,
but the preliminary findings are promising and should bring some optimism. For
more information regarding the studies mentioned in this blog you can click on
the following links: