Combination of Genetics and Nanotechnology for Down Syndrome Modification: A Potential Hypothesis and Review of the Literature

Down syndrome (DS) is one of the most prevalent genetic disorders in humans. The use of new approaches in genetic engineering and nanotechnology methods in combination with natural cellular phenomenon can modify the disease in affected people. We consider two CRISPR/Cas9 systems to cut a specific region from short arm of the chromosome 21 (Chr21) and replace it with a novel designed DNA construct, containing the essential genes in chromatin remodeling for inactivating of an extra Chr21. This requires mimicking of the natural cellular pattern for inactivation of the extra X chromosome in females. By means of controlled dosage of an appropriate Nano-carrier (a surface engineered Poly D, L-lactide-co-glycolide (PLGA) for integrating the relevant construct in Trisomy21 brain cell culture media and then in DS mouse model, we would be able to evaluate the modification and the reduction of the active extra Chr21 and in turn reduce substantial adverse effects of the disease, like intellectual disabilities. The hypothesis and study seek new insights in Down syndrome modification.

Kultur Sel Otak Ikan Kerapu Bebek (Cromileptes altivelis) Dengan Menggunakan Media L-15, MEM Dan TCM [Cell Culture Brain Of Chromileptes altivelis With Medium L-15, MEM And TCM].

Humpback grouper is high value commodity fish. The demand of domestic and foreign markets increases every year. The obstacles of Humpback grouper fish cultivation is a disease caused by Viral Nervous Necrosis (VNN). The virus attacks the brain leading to mass death. To prevent the disease, a research on VNN virus has to be started. The problem of the research is the lack of culture of fish tissue. Virus have specific location to tissue cell and species to be infected. Thereofore, first step must be done is growth from tissue cell which infection of virus. Cell culture is a technique to isolate cell, protoplasm, tissue or organ to be grown in a sterile condition with nutrition containing growth hormone to promote multiplication. Cell culture technique can be used in many basic applications in cell biology. The purpose of this research is to develop cell culture from Grouper fish brain for VNN research. The hope is culture can grow and develop well.Research executed at June until Desember 2009 in Laboratory In Vitro of Veterinari Faculty of Airlangga University and Laboratory Gastroenteritis Institute of Tropical Disease, Airlangga University, Surabaya. The result showed that brain cell culture of humpback grouper fish can be grow and multiply well in all three media, media L-15 cell growth was faster compared to media MEM and TCM.