NSF Division of Molecular and Cellular Biosciences: “Unraveling Extracellular microRNA Communication”

Funding Agency: NSF Division of Molecular and Cellular Biosciences

Title: Unraveling Extracellular microRNA Communication

Status: Active

Period: 2/21-1/22

Role: Principal Investigator

Grant Detail:

MicroRNAs are exported from cells through hemichannels, gap junctions, and extracellular vesicles, affecting cells at great distances from the cells responsible for their transcription. Unfortunately, reports on the intercellular transmission of miRNAs have focused on individually labeled miRNAs, leaving unanswered larger questions, such as: which miRNAs are transferred, whether the transfer is selective, whether transferred miRNAs are active, and how fast and how far they are transferred. The primary reason for this knowledge gap is that miRNAs are not labeled by the cell of origin. To probe miRNA-mediated cell-cell communication, we will pursue the following specific objectives: (1) identification of miRNAs that are transferred between cells, (2) engineering of ultrasensitive miRNA sensors using synthetic biology circuits, and (3) characterization and control of miRNA transmission between cells.


Since 2004, UT Health San Antonio, Greehey Children’s Cancer Research Institute’s (Greehey CCRI) mission has been to advance scientific knowledge relevant to childhood cancer, contribute to understanding its causes, and accelerate the translation of knowledge into novel therapies. Greehey CCRI strives to have a national and global impact on childhood cancer by discovering, developing, and disseminating new scientific knowledge. Our mission consists of three key areas — research, clinical, and education.

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