The Rockefeller University

Chromocell Corporation

Gunter Blobel

John Aris

Kambiz Shekdar

The invention is directed to reliable and efficient detection of mRNAs as well as other RNAs in living cells and its use to identify and, if desired, separate cells based on their desired characteristics. Such methods greatly simplify and reduce the time necessary to carry out previously-known procedures, and offers new approaches as well, such as selecting cells that generate a particular protein or antisense oligonucleotide, generating cell lines that express multiple proteins, generating cell lines with knock-out of one or more protein, and others.

Isolation of living cells and preparation of cell lines based on detection and quantification of preselected cellular ribonucleic acid sequences

The invention relates to a hybridoma cell line which produces a monoclonal antibody which cross reacts with both yeast and human fibrillarin. Diagnostic kits are also described. These are useful in diagnosing diseases such as scleroderma.

Monoclonal antibodies to nucleolar protein

Substantially pure nucleic acid sequences coding for human fibrillarin have been identified and isolated. The isolated material is used to generate the protein in vitro, which is then used to identify autoimmune antibodies in patients suffering from scleroderma.

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New York, NY, United States of America

Gunter Blobel