MicroRNAs are small RNA molecules of 20-25 nucleotides length, regulating gene expression by inhibition of transcription or translation of proteins. High levels of miR-196a, a microRNA suppressing the expression of specific homebox genes that are of high relevance for the development of the human embryo, activated oncogenic pathways inside human tumor cells and induced tumor cell dissemination. nature health
Surgical removal of a tissue sample is now the standard for diagnosing cancer. Such procedures, known as biopsies, are accurate but only offer a snapshot of the tumor at a single moment in time. Monitoring a tumor for weeks or months after the biopsy, tracking its growth and how it responds to treatment, would be much more valuable, says Michael Cima, MIT professor of materials science and engineering, who has developed the first implantable device that can do just that. nature health
The sense of smell is a complex process of the central nervous system that involves specific areas of the brain. In fact, olfactory dysfunction is seen in various central nervous system disorders that involve immune-mediated mechanisms, such as Parkinson’s disease, schizophrenia, Alzheimer’s disease and multiple sclerosis. Systemic lupus erythemaus (SLE) is an autoimmune disease that sometimes involves the central nervous system in a condition known as neuropsychiatric SLE (NPSLE). nature health
The Stowers Institute’s Hawley Lab and Molecular Biology Facility have developed a “whole-genome sequencing approach” to mapping mutations in fruit flies. The novel methodology promises to reduce the time and effort required to identify mutations of biological interest. The work was published in the May issue of the journal GENETICS. nature health
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