Purpose
The study was conducted to investigate the effectivity and the cytotoxicity of fractions 14 and 36K of metabolite extract of
Streptomyces hygroscopicus
subsp. Hygroscopicus as an antimalarial compounds against
Plasmodium berghei
in vitro.
Methods
Fractions 14 and 36K of metabolite extract of
Streptomyces hygroscopicus
subsp. Hygroscopicus produced by the fractionation process utilizing the Flash Column Chromatography (FCC) BUCHI Reveleris
®
PREP.
Plasmodium berghei
culture was used to assess the antimalarial activity of fractions 14 and 36K. Parasite densities and the ability of parasite growth were determined under microscopic. The cytotoxicity of the fractions was assessed using MTT assays on the MCF-7 cell line.
Results
Streptomyces hygroscopicus
subsp. Hygroscopicus fractions 14 and 36K have antimalarial activity against
Plasmodium berghei
, with fraction 14 having the more potent activity. The percentage of
Plasmodium berghei
-infected erythrocytes was decreased as well as the increase of fraction concentration. Fraction 14 has the highest inhibition of parasite growth at a concentration of 156,25 μg/mL, with an inhibition percentage of 67.73% (R
2
= 0.953, p = 0.000). IC
50
of fractions 14 and 36K were found at 10.63 μg/mL and 135,91 μg/mL, respectively. The fractions caused morphological damage in almost all asexual stages of the parasite. Both fractions were not toxic against MCF-7, indicating that the fractions have a safe active metabolite.
Conclusion
Fractions 14 and 36K of metabolite extract
Streptomyces hygroscopicus
subsp. Hygroscopicus contains non-toxic compounds that could damage the morphology and inhibit the growth of
Plasmodium berghei
in vitro.