Inhibition of glycolysis and respiration of sarcoma-180 cells by echitamine chloride.

Abstract:

:Malignant tumors are known to exhibit high rates of glycolytic activity leading to high production of lactic acid. Hence, neoplastic cells have elevated activity of enzymes responsible for glycolysis. Echitamine chloride, an indole alkaloid extracted from the bark of Alstonia scholaris, has been reported to have a highly promising anticancer activity against fibrosarcoma in rats. In the present study, the effect of echitamine chloride on energy metabolism of S-180 cells is investigated to have a better understanding on the mode of action of echitamine chloride. The effect of echitamine chloride on the mitochondrial and cellular respiration of S-180 cells was studied. Also, the effects on glucose utilization, pyruvate utilization and lactate formation were studied on whole S-180 cells and S-180 cell-free homogenate. The levels of glycolytic enzymes such as hexokinase and lactate dehydrogenase were estimated in which particular emphasis has been laid on hexokinase which occurs both in cytosolic and particulate forms in neoplastic cells. Hence the differential effect of echitamine chloride on the levels of total, cytosolic and particulate hexokinase has been investigated. In conclusion, echitamine chloride affects both cellular and mitochondrial respiration, leading to reduction of the cellular energy pool and thereby resulting in the loss of viability of S-180 cells.

journal_name

Chemotherapy

journal_title

Chemotherapy

authors

Saraswathi V,Ramamoorthy N,Subramaniam S,Mathuram V,Gunasekaran P,Govindasamy S

doi

10.1159/000007115

subject

Has Abstract

pub_date

1998-05-01 00:00:00

pages

198-205

issue

3

eissn

0009-3157

issn

1421-9794

pii

che44198

journal_volume

44

pub_type

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