ADENOVIRAL- BASED BIOLOGICAL DELIVERY AND EXPRESSION SYSTEM FOR USE IN THE TREATMENT OF OSTEOARTHRITIS

    公开(公告)号:US20220348963A1

    公开(公告)日:2022-11-03

    申请号:US17855322

    申请日:2022-06-30

    IPC分类号: C12N15/86 C07K14/545 C12N7/00

    摘要: The invention relates to an adenoviral-based biological delivery and expression system for use in the treatment or prevention of osteoarthritis in human or mammalian joints by long-term inducible gene expression of human or mammalian interleukin-I receptor antagonist (IL-1 Ra) in synovial cells, comprising a helper-dependent adenoviral vector containing a nucleic acid sequence encoding for human or mammalian interleukin-I receptor antagonist (IL-I Ra), left and right inverted terminal repeats (L ITR and R ITR), the adenoviral packaging signal and non-viral, non-coding stuffer nucleic acid sequences, wherein the expression of the human or mammalian interleukin-I receptor antagonist (IL-I Ra) gene within synovial cells is regulated by an inflammation-inducible promoter.

    METHOD FOR IN SITU DETERMINATION OF NUCLEIC ACID PROXIMITY

    公开(公告)号:US20220290224A1

    公开(公告)日:2022-09-15

    申请号:US17669211

    申请日:2022-02-10

    摘要: Disclosed is an in situ method for detecting spatial proximity relationships between nucleic acid sequences, such as DNA, in a cell. The method includes: providing a sample of one or more cells comprising nucleic acids; fragmenting the nucleic acids present in the cells that leaves 5′ overhanging ends; filling in the overhanging ends with at least one labeled nucleotide; joining the filled in end of the fragmented nucleic acids that are in close physical proximity to create one or more end joined nucleic acid fragments having a junction; isolating the one or more end joined nucleic acid fragments using the labeled nucleotide; and determining the sequence at the junction of the one or more end joined nucleic acid fragments.