• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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• pp.212.1-212.1
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• 2003

2-Hydroxycinnamaldehyde is an active compound isolated from the Stem Bark of Cinnamomum cassia, a traditional oriental medicinal herb, which has been shown to inhibit tumor cell proliferation. In this study, we investigated the effects of 2-hydroxycinnamaldehyde on the cytotoxicity. induction of apoptosis and the putative pathways of its actions in human promyelocytic leukemia cells (HL-60). (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.159.2-159.2
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• 2003

Codonopside lc is an active natural compound isolated from the roots of Codonopsis lanceolata (Campanulaceae), a Korean medicinal herb. In the present study, we investigated the in vitro effect of Codonopside 1c on the proliferation and induction of apoptosis in HL-60 human promyelocytic cells. When HL-60 cells were treated with Codonopside 1c, evidence of apoptotic features, including DNA fragmentation, formation of DNA ladder in agarose gel elecrophoresis and increse of annexin V binding, were obtained. (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.153.2-154
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• 2003

Extracts of Artemisia asiatica Nakai (Asteraceae) possess anti-inflammatory and anti-oxidative activities. Eupatilin (5,7-dihydroxy-3,4,6-tri-methoxy-flavone), one of the pharmacologically active ingredients derived from Artemisia asiatica, was shown to induce apoptosis in human promyelocytic leukemia (HL-60) cells (H.-J. Seo and Y.-J. Surh, Mutat. Res., 496, 191-198, 2001). In the present study, we examined the cytostatic effects of eupatilin in H-ras-transformed human breast epithelial (MCF10A-ras) cells. (omitted)

• International Journal of Oral Biology
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• 제36권1호
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• pp.13-21
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• 2011

Chios gum mastic (CGM) is produced from Pistiacia lentiscus L var chia, which grows only on Chios Island in Greece. CGM is a kind of resin extracted from the stem and leaves, has been used for many centuries in many Mediterranean countries as a dietary supplement and folk medicine for stomach and duodenal ulcers. CGM is known to induce cell cycle arrest and apoptosis in some cancer cells. This study was undertaken to investigate the alteration of the cell cycle and induction of apoptosis following CGM treatment of HL-60 cells. The viability of the HL-60 cells was assessed using the MTT assay. Hoechst staining and DNA electrophoresis were employed to detect HL-60 cells undergoing apoptosis. Western blotting, immunocytochemistry, confocal microscopy, FACScan flow cytometry, MMP activity and proteasome activity analyses were also employed. CGM treatment of HL-60 cells was found to result in a dose- and time-dependent decrease in cell viability and apoptotic cell death. Tested HL-60 cells showed a variety of apoptotic manifestations and induced the downregulation of G1 cell cycle-related proteins. Taken collectively, our present findings demonstrate that CGM strongly induces G1 cell cycle arrest via the modulation of cell cycle-related proteins, and also apoptosis via proteasome, mitochondrial and caspase cascades in HL-60 cells. Hence, we provide evidence that a natural product, CGM could be considered as a novel therapeutic for human leukemia.

• 생약학회지
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• 제40권1호
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• pp.65-69
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• 2009

The present study investigated the antiproliferative effect of Litsea japonica in HL-60/ADR, adriamycin resistant human promyelocytic leukemia cells. The 80% ethanol extract of L. japonica markedly inhibited the growth of HL-60/ADR cells. When HL-60/ADR cells were treated with the extract, several apoptosis events like as DNA fragmentation, chromatin condensation and the increase of the population of sub-G1 hypodiploid cells were observed. In the mechanism of apoptosis induction by L. japonica, we examined the changes of Bcl-2 and Bax protein expression levels, and activation of caspases. After the HL-60/ADR cells were treated with the extract, the Bcl-2 expression was decreased, whereas the expression of Bax was increased in a time-dependent manner compared to the control. In addition, the active forms of caspase-9 and -3 were increased and the cleavage of poly (ADP-ribose) polymerase, a vital substrate of effector caspase, was observed. The results suggest that the inhibitory effect of L. japonica on the growth of the HL-60/ADR appears to arise from the induction of apoptosis via the down-regulation of Bcl-2 and the activation of caspases.

• 한국콘텐츠학회논문지
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• 제14권6호
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• pp.241-246
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• 2014

급성전골수구성 백혈병(Acute promyelocytic leukemia, APL)은 혈액암으로 치료가 쉽지 않을 뿐만 아니라 항암치료에 가장 효과가 좋다는 방사선 치료를 해도 오히려 정상세포에도 작용하여 부작용을 초래하게 된다. 본 연구에서는 전자선(EB)을 TNF-${\alpha}$와 같이 처리하였을 경우 정상세포와 암세포의 세포 죽음에 어떠한 영향을 미치는지 확인하였다. HL-60세포는 APL세포주로서 사용하였고 DMSO를 처리하여 분화시킨 HL-60세포는 정상과립구의 성질을 나타내어 정상대조군으로 이용하였다. 그 결과 TNF-${\alpha}$를 전자선을 처리한 HL-60세포에서만 세포독성효과를 나타내었고 이 과정에서 TNF-${\alpha}$는 caspase3를 활성화 시켜서 세포자멸사를 유도하여 세포가 죽음에 이르게 하였다. 결론적으로 TNF-${\alpha}$는 항암치료의 부작용을 없애기 위해 저농도의 전자선 치료 시 함께 사용하여 암 세포의 제거를 증가시켜 암의 치료효율을 높일 수 있는 유효물질로 사료된다.

• 생명과학회지
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• 제23권9호
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• pp.1118-1125
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• 2013

감귤류에 많이 함유되어 있는 naringenin은 항암화학요법제로서 중요한 가능성을 가지고 있으나 항암활성에 대한 분자생물학적 기전에 대해서는 명확히 밝혀져 있지 않다. 본 연구에서는 인체 혈구암세포인 U937 세포에서 naringenin이 유발하는 항암효과 및 항암기전을 조사하였다. Naringenin 처리에 의한 U937 세포의 증식억제는 apoptosis 유발과 연관성이 있었으며, 이러한 현상은 caspases 활성화와 밀접한 관련이 있었다. 그러나 pan-caspase inhibitor인 z-VAD-fmk의 선처리에 의하여 U937 세포에서 naringenin이 유발하는 apoptosis가 억제되는 것으로 나타났으므로 caspases가 apoptosis 유발의 중요한 조절자라는 것을 알 수 있었다. 또한 U937 세포에 naringenin을 처리하였을 경우 pro-apoptotic Bcl-2 및 anti-apoptotic Bax의 발현에는 아무런 변화가 나타나지는 않았지만 Bcl-2가 과발현된 U937/Bcl-2 세포에서 naringenin에 의한 apoptosis가 억제되었다. 하지만 small-molecule Bcl-2 inhibitor인 HA14-1 및 naringenin을 같이 처리하였을 경우에는 XIAP 발현감소, Bid 단편화 및 caspase-3 활성화를 통하여 다시 apoptosis가 유발되었다. 따라서 HA14-1 및 naringenin에 의한 apoptosis 상승효과는 death receptor-mediated apoptosis pathway를 경유한다는 것을 제시하는 결과이다.

• 한국약용작물학회지
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• 제12권4호
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• pp.315-320
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• 2004

와송 (OJB)의 면역 및 항암 효과를 관찰한 결과, 와송은 생쥐의 비장 및 흉선세포의 생존율을 증가시켰으며, 임파구 아집단분석 결과 비장 T세포를 유의성있게 증가시켰는데 비장 T세포 중의 $T_H$세포 및 Tc세포가 모두 증가되었고, 혈청 중 ${\gamma}-interferon$의 생성을 현저하게 증가시켰다. 또한 와송은 L1210세포 및 U937세포 등의 백혈병세포의 아폽토시스를 촉진시키는 항암능력을 보유하고 있었다.

• Journal of Pharmaceutical Investigation
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• 제33권4호
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• pp.261-265
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• 2003

Tumor necrosis facto-related apoptosis-inducing ligand (TRAIL) is a recently identified member of the tumor necrosis factor cytokine superfamily. TRAIL has been shown to induce apoptosis in a number of tumor cells whereas cells from most of normal tissues are highly resistant to TRAIL-induced apoptosis. These observations have raised considerable interest in the use of TRAIL in tumor therapy. In this study we report the biodistribution fates and serum expression pattern of plasmid DNA encoding TRAIL (pTRAIL) delivered in erythrocyte ghosts (EG). pTRAIL was loaded into EG by electroportion in a hypotonic medium The mRNA expression of pTRAIL was prolonged following delivery in EG-encapsulated forms. EG containing pTRAIL showed significant levels of mRNA expression in the blood over 9 days. The organ expression patterns of pTRAIL delivered via EG, however, did not significantly differ from those of naked pTRAIL, indicating that the expression-enhancing effect of EG containing pTRAIL was localized to the blood. These results suggest that pTRAIL-loaded EG might be of potential use in the treatment of hematological diseases such as TRAIL-sensitive leukemia.

• BMB Reports
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• 제43권11호
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• pp.766-771
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• 2010

The biological evaluation of a new synthesized Pt(II)-complex, 2,2'-bipyridin Butylglycinato Pt(II) nitrate, an anti-tumor component, was studied at different temperatures by fluorescence and far UV circular dichroism (CD) spectroscopic methods. Human serum albumin (HSA) and human tumor cell line K562 were as targets. The Pt(II)-complex has a strong ability to quench the intrinsic fluorescence of HSA. Binding and thermodynamic parameters of the interaction were calculated by fluorescence quenching method. Far-UV-CD results showed that Pt(II)-complex induced increasing in content of $\alpha$ helical structure of the protein and stabilized it. The 50% cytotoxic concentration ($Cc_{50}$) of complex was determined using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay at different incubation times. Also, fluorescence staining with DAPI (4,6-diamidino-2-phenylindole) revealed some typical nuclear changes, which are characteristic of apoptosis. Above results suggest that Pt (II) complex is a promising anti-proliferative agent and should execute its biological effects by inducing apoptosis.