Abstract:
:Metastasis is a characteristic and fatal feature of human malignancies. Its regulation is therefore of the utmost significance to clinicians. The present study was undertaken to determine whether a legume-derived protease inhibitor (PI) of trypsin/chymotrypsin, the field bean PI (FBPI), also has plasmin inhibitory activity and can inhibit pulmonary metastasis of B16F10 melanoma cells systemically injected into BDF1 mice. Two approaches to the problem were made. In the first, the melanoma cells were exposed to two different concentrations of the FBPI prior to their inoculation into animals. In the second, the mice were treated intraperitoneally with FBPI at a dose of 100 mg/kg body weight once daily for 10 days, the treatment being started soon after the systemic injection of the tumour cells. The study revealed that both modes of FBPI treatment could effectively block lung cell metastasis by the melanoma cells and that FBPI has plasmin blocking activity. Since urokinase type plasminogen activator and plasmin are known to play significant roles in tumour cell metastasis, the dose-dependent inhibitory effect of FBPI with antiplasmin activity on tumour cell metastasis suggests that its antimetastatogenic action is probably mediated through its plasmin inhibitory action.
journal_name
Cancer Lettjournal_title
Cancer lettersauthors
Banerji A,Fernandes A,Bane S,Ahire Sdoi
10.1016/s0304-3835(98)00090-1subject
Has Abstractpub_date
1998-07-03 00:00:00pages
15-20issue
1eissn
0304-3835issn
1872-7980pii
S0304-3835(98)00090-1journal_volume
129pub_type
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