Cationic trypsinogen produced by human pancreatic ductal cancer has the characteristics of spontaneous activation and gelatinolytic activity in the presence of proton.

  • Authors:
    • T Ohta
    • H Tajima
    • S Fushida
    • H Kitagawa
    • M Kayahara
    • T Nagakawa
    • K Miwa
    • M Yamamoto
    • M Numata
    • Y Nakanuma
    • Y Kitamura
    • T Terada
  • View Affiliations

  • Published online on: April 1, 1998     https://doi.org/10.3892/ijmm.1.4.689
  • Pages: 689-781
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

We examined whether human pancreatic ductal cancer cells express and secrete pancreatic cationic trypsinogen in vitro which can be spontaneously converted into active trypsin at acidic pH (pH 4.5-5. 5), in contrast to anionic trypsinogen. Cationic trypsinogen expression at the mRNA level was observed in differentiated Capan-1 and BxPC-3 cell lines. However, expression was not detected in either poorly-differentiated Panc-1 or undifferentiated MIAPaCa-2 cell line. The gelatinolytic activity of the activated form of trypsinogen in each conditioned medium in the presence of enterokinase (1.0 microg/ml) (a band with a molecular weight of approximately 23 kDa) corresponded well to the level of cationic trypsinogen mRNA. The spontaneous activation of trypsinogen also was observed by gelatin zymography of the acid-loaded conditioned medium (pH 5.5). These findings suggest that trypsinogen produced by human pancreatic ductal cancer has the characteristics of spontaneous activation and gelatinolytic activity in the presence of proton.

Related Articles

Journal Cover

Apr 1998
Volume 1 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Ohta T, Tajima H, Fushida S, Kitagawa H, Kayahara M, Nagakawa T, Miwa K, Yamamoto M, Numata M, Nakanuma Y, Nakanuma Y, et al: Cationic trypsinogen produced by human pancreatic ductal cancer has the characteristics of spontaneous activation and gelatinolytic activity in the presence of proton.. Int J Mol Med 1: 689-781, 1998.
APA
Ohta, T., Tajima, H., Fushida, S., Kitagawa, H., Kayahara, M., Nagakawa, T. ... Terada, T. (1998). Cationic trypsinogen produced by human pancreatic ductal cancer has the characteristics of spontaneous activation and gelatinolytic activity in the presence of proton.. International Journal of Molecular Medicine, 1, 689-781. https://doi.org/10.3892/ijmm.1.4.689
MLA
Ohta, T., Tajima, H., Fushida, S., Kitagawa, H., Kayahara, M., Nagakawa, T., Miwa, K., Yamamoto, M., Numata, M., Nakanuma, Y., Kitamura, Y., Terada, T."Cationic trypsinogen produced by human pancreatic ductal cancer has the characteristics of spontaneous activation and gelatinolytic activity in the presence of proton.". International Journal of Molecular Medicine 1.4 (1998): 689-781.
Chicago
Ohta, T., Tajima, H., Fushida, S., Kitagawa, H., Kayahara, M., Nagakawa, T., Miwa, K., Yamamoto, M., Numata, M., Nakanuma, Y., Kitamura, Y., Terada, T."Cationic trypsinogen produced by human pancreatic ductal cancer has the characteristics of spontaneous activation and gelatinolytic activity in the presence of proton.". International Journal of Molecular Medicine 1, no. 4 (1998): 689-781. https://doi.org/10.3892/ijmm.1.4.689