Morphological Evidence for an Apparent Lysosomotropic Activity by Unsaturated Putrescine Analogues

Jennifer D Black, B. Ganis, A. Pleshkewych, Carl W. Porter, M. Vaughan, J. Stanek

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Treatment of cultured LI210 cells with the putrescine analogue, 2,5-diamino-3-hexyne, at 0.5 dim resulted in the rapid (1–2 h) appearance of numerous cytoplasmic vacuoles which were highly visible by light microscopy. Ultrastructural examination revealed that the vacuoles contained numerous membrane vesicles and electron-dense structures resembling endosomal elements. Other cellular organelles were unaffected by the drug. The overall morphological effect by 2,5-diamino-3-hexyne was nearly identical to that produced in the same cells by the known lysosomotropic agent, chloroquine. Since the putrescine analogue, l,4-diamino-2-butyne at 1.2 dim, also produced comparable cytoplasmic vacuolation, and putrescine itself failed to do so at concentrations as high as 5 mM, it was concluded that the apparent lysosomotropic activity of the putrescine analogues was probably due to their weaker basicity related to the presence of an internal triple bond. Although it is uncertain whether the effect of the analogues on the endosomal system is related to the natural function of polyamines, the finding points out the previously unrecognized potential for certain polyamine analogues to act in this manner.

Original languageEnglish (US)
Pages (from-to)1929-1935
Number of pages7
JournalCancer Research
Volume50
Issue number6
StatePublished - Mar 15 1990

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Putrescine
Polyamines
Vacuoles
Chloroquine
Organelles
Microscopy
Cultured Cells
Electrons
Light
Membranes
Pharmaceutical Preparations

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Black, J. D., Ganis, B., Pleshkewych, A., Porter, C. W., Vaughan, M., & Stanek, J. (1990). Morphological Evidence for an Apparent Lysosomotropic Activity by Unsaturated Putrescine Analogues. Cancer Research, 50(6), 1929-1935.

Morphological Evidence for an Apparent Lysosomotropic Activity by Unsaturated Putrescine Analogues. / Black, Jennifer D; Ganis, B.; Pleshkewych, A.; Porter, Carl W.; Vaughan, M.; Stanek, J.

In: Cancer Research, Vol. 50, No. 6, 15.03.1990, p. 1929-1935.

Research output: Contribution to journalArticle

Black, JD, Ganis, B, Pleshkewych, A, Porter, CW, Vaughan, M & Stanek, J 1990, 'Morphological Evidence for an Apparent Lysosomotropic Activity by Unsaturated Putrescine Analogues', Cancer Research, vol. 50, no. 6, pp. 1929-1935.
Black JD, Ganis B, Pleshkewych A, Porter CW, Vaughan M, Stanek J. Morphological Evidence for an Apparent Lysosomotropic Activity by Unsaturated Putrescine Analogues. Cancer Research. 1990 Mar 15;50(6):1929-1935.
Black, Jennifer D ; Ganis, B. ; Pleshkewych, A. ; Porter, Carl W. ; Vaughan, M. ; Stanek, J. / Morphological Evidence for an Apparent Lysosomotropic Activity by Unsaturated Putrescine Analogues. In: Cancer Research. 1990 ; Vol. 50, No. 6. pp. 1929-1935.
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