The invention provides a compound characterized by formula (1): X1-Thr-Thr-Ala-Arg-X2, wherein cleavage of the compound into a fragment 1 comprising X1 and a fragment 2 comprising X2 generates a detectable
signal. The invention further provides an
in vitro method for detecting
protease activity in a subject's
body fluid, comprising contacting the
body fluid with the compound of the invention and detecting a
signal, wherein the
body fluid may comprise a hydrolytic
enzyme derived from
pancreatic cancer cells. Furthermore, the invention provides a kit comprising the compound of the invention and a measurement buffer. In addition, the invention provides the use of the compound, the
in vitro method or the kit of the invention for the detection of
pancreatic cancer, or for monitoring a subject that is suspected of having
pancreatic cancer, has an
increased risk of developing pancreatic
cancer, or has had pancreatic
cancer. The invention also provides the use of the compound of the invention in a method of treating pancreatic
cancer, the method comprising carrying out the
in vitro method for detecting
protease activity in a subject's body fluid, and treating pancreatic cancer in a subject for which
protease activity, has been detected.