The aim of this study is to investigate cytotoxic, proapoptotic, antimigratory and pro-antioxidant effects of methanol, acetone and ethyl acetate extracts of lichens
and
on colorectal cancer (HCT-116 ...and SW-480) cell lines. We compared the cytotoxic effects on colorectal cancer cells with the effects obtained from normal human fibroblast (MRC-5) cell line. Tetrazolium (MTT) test evaluated the cytotoxic effects, Transwell assay evaluated cell migration, acridine orange/ethidium bromide (AO/EB) fluorescent method followed the apoptosis, while prooxidant/antioxidant effects were determined spectrophotometrically through concentration of redox parameters. The tested extracts showed considerable cytotoxic effect on cancer cells with no observable cytotoxic effect on normal cells. Ethyl acetate and acetone extract of
induced the highest cytotoxicity (IC
=(21.2±1.3) µg/mL on HCT-116, and IC
=(51.3±0.8) µg/mL on SW-480 cells, respectively, after 72 h), with noteworthy apoptotic and prooxidant effects, and antimigratory potential of methanol extract.
extracts induced cytotoxic effects on HCT-116 cells after 72 h (IC
<40 μg/mL), while only methanol and acetone extracts had cytotoxic effects on SW-480 cells after 24 h, with proapoptotic/necrotic activity, as a consequence of induced oxidative stress. In conclusion, lichen extracts changed to a great extent cell viability and migratory potential of colorectal cancer cell lines. HCT-116 cells were more sensitive to treatments,
had better proapoptotic and antimigratory effects, and both investigated lichen species might be a source of substances with anticancer activity.
The composition of microbiota affects different traits of Drosophila throughout its life cycle and represents an important part of the adaptive response to environmental changes, such as increased ...levels of accumulated heavy metals in their habitats. We investigated the effects of lead added to the feeding substrate on the microbiota diversity in the fruit flies, Drosophila melanogaster and Drosophila subobscura. We compared the bacterial diversity of wild-caught flies and their progeny reared under standard laboratory conditions. We analyzed the shifts in bacterial diversity in the experimental groups of flies reared for 13 generations on standard and lead(II) acetate (Pb(CH3COO)2), Pb acetate-saturated substrates. Identification of the main bacterial genera was performed by next-generation sequencing (NGS) of the V3-V4 variable regions of the 16S rRNA gene. Results indicate significant species-specific differences in bacterial composition between natural and laboratory populations, and between the substrates. Diversity increased in both species under prolonged exposure to lead-polluted substrate, suggesting a potential adaptive response to an environmental stress.
The cytotoxicity of seven Teucrium species, a long time ago used as a food spices, for beverages and teas preparing, as well as therapeutics for digestive and respiratory diseases, were examined ...against human cervix adenocarcinoma HeLa, human melanoma Fem-x, human chronic myelogenous leukemia K562 and human breast adenocarcinoma MDA-MB-361 cells. MTT assay was used for determination of target cell survival. The most prominent cytotoxic effect was observed against K562 cells, especially by <istyle='mso-bidi-font-style:normal'>T. scordioides, T. montanum and <istyle='mso-bidi-font-style:normal'>T. botrys . All Teucrium extracts showed good cytotoxic activity on HeLa cells, but very low cytotoxic effect on MDA-MB-361 cells. In addition, the cytotoxic activities of T. scordioides and T. montanum extract were tested on healthy resting and phytohaemagglutinin-stimulated peripheral blood mononuclear cells (PHA-stimulated PBMC). T. scordioides and T. montanum extracts at concentration of 200 µg/ml reduced the resting PBMC and PHA-stimulated PBMC survival up to 10% and 20%, while the reduction of K562 cell survival at the same concentration of extracts was 94% and 97%, respectively. These results point to selectivity in their antitumor actions. Teucrium species can be regarded as promising candidates for natural plant sources of effective biological compounds as a supplements in the food industry, as well as for therapeutic use.
The acetone soluble fraction of the methanol extracts of Parmeliaceae
lichens: Hypogymnia physodes, Evernia prunastri and Parmelia sulcata, growing
on the same host tree (Prunus domestica) and at the ...same locality was
analyzed for the first time by GC and GC-MS. The major identified components
were olivetol (33.5 % of the H. physodes extract), atraric acid (30.1 % and
30.3 % of the E. prunastri and P. sulcata extracts, respectively), orcinol
(25.0 % of the E. prunastri extract), vitamin E (24.7 % of the P. sulcata
extract) and olivetonide (15.7 % of the H. physodes extract). Even though all
the identified compounds are known, a number of them were found for the first
time in the examined lichens, i.e., orcinol monomethylether (H. physodes),
orcinol, atranol, lichesterol, ergosterol (H. physodes and P. sulcata),
methyl haematomate, atraric acid, olivetol, vitamin E (H. physodes and P.
sulcata) and ?-sitosterol (P. sulcata).
This article has been corrected. Link to the correction 10.2298/JSC170614067S
nema
The cytotoxicity of seven Teucrium species, a long time ago used as a food spices, for beverages and teas preparing, as well as therapeutics for digestive and respiratory diseases, were examined ...against human cervix adenocarcinoma HeLa, human melanoma Fem-x, human chronic myelogenous leukemia K562 and human breast adenocarcinoma MDA-MB-361 cells. MTT assay was used for determination of target cell survival. The most prominent cytotoxic effect was observed against K562 cells, especially by T. scordioides, T. montanum and T. botrys. All Teucrium extracts showed good cytotoxic activity on HeLa cells, but very low cytotoxic effect on MDA-MB-361 cells. In addition, the cytotoxic activities of T. scordioides and T. montanum extract were tested on healthy resting and phytohaemagglutinin-stimulated peripheral blood mononuclear cells (PHA-stimulated PBMC). T. scordioides and T. montanum extracts at concentration of 200 µg/ml reduced the resting PBMC and PHA-stimulated PBMC survival up to 10% and 20%, while the reduction of K562 cell survival at the same concentration of extracts was 94% and 97%, respectively. These results point to selectivity in their antitumor actions. Teucrium species can be regarded as promising candidates for natural plant sources of effective biological compounds as a supplements in the food industry, as well as for therapeutic use.
The aim of this study is to investigate cytotoxic, proapoptotic, antimigratory and pro-antioxidant effects of methanol, acetone and ethyl acetate extracts of lichens Pseudevernia furfuracea and ...Platismatia glauca on colorectal cancer (HCT-116 and SW-480) cell lines. We compared the cytotoxic effects on colorectal cancer cells with the effects obtained from normal human fibroblast (MRC-5) cell line. Tetrazolium (MTT) test evaluated the cytotoxic effects, Transwell assay evaluated cell migration, acridine orange/ethidium bromide (AO/EB) fluorescent method followed the apoptosis, while prooxidant/antioxidant effects were determined spectrophotometrically through concentration of redox parameters. The tested extracts showed considerable cytotoxic effect on cancer cells with no observable cytotoxic effect on normal cells. Ethyl acetate and acetone extract of P furfuracea induced the highest cytotoxicity (IC.sub.50 =(21.2 + or - 1.3) microg/mL on HCT-116, and IC.sub.50=(51.3 + or - 0.8) microg/mL on SW-480 cells, respectively, after 72 h), with noteworthy apoptotic and prooxidant effects, and antimigratory potential of methanol extract. P glauca extracts induced cytotoxic effects on HCT-116 cells after 72 h (IC.sub.50<40 microg/mL), while only methanol and acetone extracts had cytotoxic effects on SW-480 cells after 24 h, with proapoptotic/necrotic activity, as a consequence of induced oxidative stress. In conclusion, lichen extracts changed to a great extent cell viability and migratory potential of colorectal cancer cell lines. HCT-116 cells were more sensitive to treatments, P furfuracea had better proapoptotic and antimigratory effects, and both investigated lichen species might be a source of substances with anticancer activity.Key words: apoptosis, colorectal cancer, cytotoxic effects, lichen extracts, cell motility, redox status
New Values of STANKOVIC, Milan S; MITROVIC, Tatjana Lj; MATIC, Ivana Z ...
Notulae botanicae Horti agrobotanici Cluj-Napoca,
01/2015, Letnik:
43, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The cytotoxicity of seven Teucrium species, a long time ago used as a food spices, for beverages and teas preparing, as well as therapeutics for digestive and respiratory diseases, were examined ...against human cervix adenocarcinoma HeLa, human melanoma Fem-x, human chronic myelogenous leukemia K562 and human breast adenocarcinoma MDA-MB-361 cells. MTT assay was used for determination of target cell survival. The most prominent cytotoxic effect was observed against K562 cells, especially by T. scordioides, T. montanum and T. botrys. All Teucrium extracts showed good cytotoxic activity on HeLa cells, but very low cytotoxic effect on MDA-MB-361 cells. In addition, the cytotoxic activities of T. scordioides and T. montanum extract were tested on healthy resting and phytohaemagglutinin-stimulated peripheral blood mononuclear cells (PHA-stimulated PBMC). T. scordioidesand T. montanum extracts at concentration of 200 µg/ml reduced the resting PBMC and PHA-stimulated PBMC survival up to 10% and 20%, while the reduction of K562 cell survival at the same concentration of extracts was 94% and 97%, respectively. These results point to selectivity in their antitumor actions. Teucrium species can be regarded as promising candidates for natural plant sources of effective biological compounds as a supplements in the food industry, as well as for therapeutic use.
Svrha je ovoga rada bila ispitati citotoksični, proapoptotski, antimigratorni i pro-antioksidacijski učinak metanolnih, acetonskih i etil-acetatnih ekstrakata dvaju vrsta lišaja, i to: Pseudevernia ...furfuracea i Platismatia glauca na tumorske stanične linije debelog crijeva (HCT-116 i SW-480). Citotoksični efekti na tumorskim staničnim linijama debelog crijeva uspoređeni su s onima na staničnoj liniji normalnih humanih fibroblasta (MRC-5). Citotoksičnost je ispitana MTT testom, stanična migracija Transwell esejom, dok je apoptoza praćena fluorescentnom metodom pomoću akridin narančastog bojila i etidijevog bromida. Prooksidacijski/antioksidacijski učinak praćen je spektrofotometrijskim mjerenjem koncentracije redoks parametara. Ispitani ekstrakti imali su značajan citotoksični učinak na tumorske stanične linije, bez zapaženog utjecaja na normalnu staničnu liniju. Najjača citotoksičnost postignuta je nakon 72 h obrade staničnih linija ekstraktima vrste P. furfuracea (IC50= (21,2±1.3) µg/mL pri obradi HCT-116 stanica etil-acetatnim ekstraktom i IC50=(51.3±0.8) µg/mL pri obradi stanica SW-480 acetonskim ekstraktom). Ekstrakti P. furfuracea imali su značajan proapoptotski i prooksidacijski učinak, dok je metanolni ekstrakt te vrste imao najjači antimigratorni učinak na ispitane tumorske stanične linije. Svi ispitani ekstrakti vrste P. glauca imali su znatan citotoksični učinak na stanice HCT-116 nakon 72 h tretmana (IC50<40 μg/mL), dok su metanolni i acetonski ekstrakti imali citotoksični učinak na stanice SW-480 nakon 24 h, s izraženom proapoptotskom/nekrotskom aktivnošću. Svi navedeni efekti posljedica su induciranog oksidacijskog stresa u tretiranim stanicama. Može se zaključiti da ekstrakti lišaja bitno mijenjaju vijabilnost i migratorni potencijal ispitanih tumorskih staničnih linija karcinoma debelog crijeva. Dobiveni rezultati pokazuju da su stanice HCT-116 osetljivije na ispitane ekstrakte, pri čemu ekstrakti vrste P. furfuracea pokazuju bolji proapototski i antimigratorni učinak. Ispitane vrste lišaja mogu se smatrati izvorima antikancerogenih aktivnih tvari.
The antioxidative, antimicrobial and antiproliferative potentials of the methanol extracts of the lichen species Parmelia sulcata, Flavoparmelia caperata, Evernia prunastri, Hypogymnia physodes and ...Cladonia foliacea were evaluated. The total phenolic content of the tested extracts varied from 78.12 to 141.59 mg of gallic acid equivalent (GA)/g of extract and the total flavonoid content from 20.14 to 44.43 mg of rutin equivalent (Ru)/g of extract. The antioxidant capacities of the lichen extracts were determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals scavenging. Hypogymnia physodes with the highest phenolic content showed the strongest DPPH radical scavenging effect. Further, the antimicrobial potential of the lichen extracts was determined by a microdilution method on 29 microorganisms, including 15 strains of bacteria, 10 species of filamentous fungi and 4 yeast species. A high antimicrobial activity of all the tested extracts was observed with more potent inhibitory effects on the growth of Gram (+) bacteria. The highest antimicrobial activity among lichens was demonstrated by Hypogymnia physodes and Cladonia foliacea. Finally, the antiproliferative activity of the lichen extracts was explored on the colon cancer adenocarcinoma cell line HCT-116 by MTT (3-4,5-dimethylthiazol-2-yl-2,5-diphenyltetrazolium bromide) viability assay and acridine orange/ethidium bromide staining. The methanol extracts of Hypogymnia physodes and Cladonia foliacea showed a better cytotoxic activity than the other extracts. All lichen species showed the ability to induce apoptosis of HCT-116 cells.
PDF
