• 한국식품영양과학회지
• /
• 제33권6호
• /
• pp.1074-1077
• /
• 2004

저령의 에틸아세테이트 추출물에서 4개의 분획을 제조한 후 백혈병 세포인 K-562, L-1210, HL-60와 U-937 세포의 세포생존 억제효능을 관찰하였다. Fr. 2는 L-1210, HL-60 세포 억제효능이 미비하였고, Fr. 3은 4종의 백혈병 세포주에 대하여 세포생존 억제효능이 있었다. 이 효능은 L-1210 세포에 대하여 가장 강하게 나타났다. 세포사멸 작용을 증명하는 DNA분절 현상을 L-1210 세포에서 관찰하였을 때, fr. 3을 30 $\mu\textrm{g}$/mL, 100 $\mu\textrm{g}$/mL로 처리한 군에서 만 DNA분절 현상이 관찰되었다. Fr. 3에 대한 DNA합성 억제능을 [$^3$H]thymidine incorporation test로 관찰하였을 때 50 $\mu\textrm{g}$/mL, 100 $\mu\textrm{g}$/mL로 처리한 군에서만 [$^3$H]thymidine incorporation이 저하되었다. 결론적으로 저령에는 백혈병세포인 L-1210과 HL-60의 세포생존 억제성분이 포함되어 있으며, 억제작용은 L-1210에 가장 뚜렷이 나타내었다. Fr. 3은 L-1210 세포에 대하여 DNA 합성능을 저해시켰고, Fr. 3가 L-1210 세포에 대하여 세포생존 억제작용을 나타내는 것은 계획된 세포사멸현상인 apoptosis에 의한 것으로 사료된다. 따라서 fr. 3에 대한 성분 연구가 요구되어진다.

• 약학회지
• /
• 제42권4호
• /
• pp.345-352
• /
• 1998

Praecoxin A, an ellagitannin, purified from Alnus hirsuta var.microphlla was evaluated on the antitumor activity. Praecoxin A had the significant cytotoxicity to s ix tumor cell lines: human chronic myelogenous leukemia K-562, human promyelocytic leukemia HL-60, mouse leukemia P388, mouse lymphocytic leukemia L-1210, sarcoma-l8O, mouse lymphoma L5178Y except L-1210. And the most sensitive cell line was K-562 ($ED_{50}=2.43{\mu}g/ml$). The $ED_{50} of praecoxin A against HL-60, P388, L-1210, sarcoma7l8O and L5178Y were 6.28, 8.66, 10.00, 7.01, $9.32{\mu}g/ml$, respectively. Praecoxin A showed the increasing effect in life span by 36.8% on the 1st day after treatment of 10mg/kg in mice bearing sarcoma-180 tumor cells (ascitic form) via NCI (National Cancer Institute, U.S.A.) protocol in vivo assay. As a result, praecoxin A is considered to show the antitumor activity.

• 약학회지
• /
• 제45권6호
• /
• pp.641-649
• /
• 2001

In this study, the antitumor activities were investigated using $\beta$-lmmunan, a proteoglycan obtained from cultured mycelia of the IY009 strain of Ganoderma lucidum belonging to basidiomycetes. The result showed the significant effect of cytotoxicity test against murine sarcoma 180 and murine lymphocytic leukemia L1210 using immunized macrophage cultures by $\beta$-lmmunan. When intraperitoneally injected at 40 mg/kg/day daily for 10 days, $\beta$-lmmunan inhibited the growth of sarcoma 180 solid tumor in ICR mice by 88.8% (p<0.05). It was also observed that $\beta$-lmmunan increased life span by 85.2% (p<0.01) after treatment of 100 mg/kg/day in BDF1 mice bearing lymphocytic leukemia L1210. And combination therapy with cisplatin (dosage: 4 mg/kg) increased life span by 140.4% (p<0.05) after treatment of 100 mg/kg/day daily in BDF1 mice bearing lymphocytic leukemia L1210.

• 동의생리병리학회지
• /
• 제17권2호
• /
• pp.338-345
• /
• 2003

The purpose of this research was to investigate the anticancer effects of Dojeokseungki-tang(DJSKT) on the various leukemia cell lines. DJSKT treatment suppressed proliferation of cultured-HL60, Jurkat, L1210 cells and increased apoptosis of cultured-L1210, HL60, Molt4, Jurkat cells. DJSKT treatment induced apoptosis of Jurkat cells including the morphologic changes such as the 'ladder pattern' revealed by agarose gel electrophoresis of DNA in a dose-dependent manner. Administration of DJSKT induced apoptosis of transplanted-L1210 cells in vivo, and decreased of mitochondrial transmembrane potential of L 1210 and Jurkat cells in vitro. DJSKT treatment reduced the expression of bcl-2 proteins in Jurkat cells and increased ICE, c-myc, p53 mRNA expression in Molt4 cells. In conclusion, these results suggest that DJSKT might be usefully applied for anti-carcinogenic agent of leukemia.

• 동의생리병리학회지
• /
• 제16권5호
• /
• pp.932-937
• /
• 2002

The purpose of this research was to investigate the effect of Yonggak-san (YGS) on the immune reaction and apoptosis of leukemia cells. Administration of YGS(500 mg/kg) enhanced proliferation of splenocytes, thymocytes and mesenteric lymph node cells, and also YGS accelerated subpopulation of splenic Band T, thymic T and mesenteric lymph node-T lymphocytes, especially significantly increased CD4+-TH cells in BALB/c mice. YGS accelerated phagocytic activity and production of nitric oxide in peritoneal macrophages. YGS induced apoptosis of transplanted-L1210 cells in vivo, increased apoptotic cell death of cultured-L1210 and/or Molt4 human leukemia cells, decreased of mitochondrial transmembrane potential of both cells in vitro. These results suggest that YGS have an immune-regulatory effect and anti-cancer property.

• Journal of Life Science
• /
• 제9권1호
• /
• pp.9-13
• /
• 1999

Reduced thiols were important compounds for the maintenance of leukemia and lymphoma cell survival (and growth). In the course of examining the microenvirn-mental effects on lymphoma and leukemia cell growth, we found that cysteine suppressed apoptosis in these cells. In a present study, in order to investigate the role of cystein on the suppression of apoptotic cell death, we used CS21, P388, and L1210 cell lines. The addition of BSO, an inhibitor of glutathione synthase, induced apoptosis of these cells by blocking the cellular uptake of cysteine in CS21 cells. Although L1210 cells underwent apoptosis without thiol compounds, the addition of these compounds suppressed the apoptosis and promoted the growth or L1210 cells. When specific inhibitors of caspase3-like proteases, but not caspase1-like proteases, were activated during the L1210 cell apoptosis but the addition of thiol compounds suppressed the activation of caspase3-like proteases. These results suggest that reduced thiols including cysteine play an important role in the suppression of cell apoptosis by inhibiting the activation of caspase3-like proteases.

• Applied Biological Chemistry
• /
• 제38권3호
• /
• pp.273-277
• /
• 1995

60종의 생약의 methanol 추출물을 L1210세포에 대하여 1차스크리닝실험을 수행하여 항암활성물질을 검색하고, 그 중에서 비교적 세포독성이 강하게 나타나는 산국(Chrysanthemum boreale M.)에서 항암활성물질을 분리정제하였다. 산국의 용매분획물의 L1210, K562, A549세포에 대한 세포독성실험에서는 chloroform 분획에서 $ED_{50}$값이 각각 3.98, 4.28, 3.84 (${\mu}g/ml$)로 나타났다. 이 chloroform 분획에서 유효세포독성물질을 정제하여 Compound I과 Compound II를 각각 얻었으며, 이 중에서 Compound I은 L1210, K562, A549세포에 대하여 각각 $ED_{50}$값이 0.55, 0.0003, 0.001 (${\mu}g/ml$)로 강한 세포독성을 나타내었으나, Compound II는 K562에 대해서만 $ED_{50}$ 값이 4.79 (${\mu}g/ml$)의 세포독성을 나타내었다.

• 생약학회지
• /
• 제31권1호
• /
• pp.51-56
• /
• 2000

This study was carried out to evaluate cytotoxic effects of the roots of Sophora flavescens Ait. extracts on murine leukemia tumor cells lines $(P388D_1\;and\;L1210)$. Disruptions in cell organelles were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. The comparison of $IC_{50}$ values of the ethyl acetate of Sophora flavescens Ait. extract in leukemia cell lines showed that their susceptibility to these extracts decreased in the following order : Adriamycin>Fr.4>Fr.5>Fr.3>Fr.1>Fr.2 by the MTT assay. These results suggest that the fraction 4 of the ethyl acetate soluble extract of Sophora flavescens Ait. may be a valuable choice for the studies on the treatment of murine leukemia cell lines.

• Journal of Yeungnam Medical Science
• /
• 제10권2호
• /
• pp.432-444
• /
• 1993

Adriamycin과 vincristine 각각에 내성인 생쥐의 림프아세포성 백혈병세포 L1210세포의 특성과 내성관계 단백질을 찾아내고 항암제의 세포내 분포를 관찰하였다. 항암제의 내성생성은 adriamycin이 $10^{-5}M$과 $10^{-6}M$에서 자란 세포를 L1210-$AdR_5$와 $-AdR_6$로 하고 vincristine은 $10^{-6}M$과 $10^{-7}M$에서 자란 세포를 L1210-$VcR_6$와 $-VcR_7$로 하였다. 감수성세포는 L1210으로 하였다. 내성세포의 성장속도는 감수성세포에 비해 느렸으며 doubling time은 L1210가 29.7시간, L1210-$AdR_5$가 68.7시간 $-VdR_6$가 58.2시간이었다. 복합내성은 내성인자로 표기되었고 L1210-$AdR_5$는 vincristine에 대해 76.4배, $-VcR_6$는 adriamycin에 대해 98.6배로 나타냈다. 감수성세포와 내성세포의 세포막 단백질을 비교한 결과 L1210-$AdR_5$에서는 220, 158, 88 Kd의 내성관계단백질이 나타났고 $-VcR_6$에서는 158, 140 및 88Kd의 내성관계단백질이 관찰되었다. 세포막 표면단백질을 $^{125}I$로 결합시켜 자가방사선상으로 분석하였다. 세포막 표면단백질에 결합되는 $^{125}I$의 정도는 L1210에 0.95% L1210-$AdR_5$에 5.4%, $-VcR_6$에 1.7%였다. 세포막표면단백질은 L1210-$AdR_5$에서는 158, 72.8 및 42.4 Kd의 단백질, $-VcR_6$에서는 300, 158, 72.8 및 42.4 Kd의 단백질이 관찰되었다.

• 동의생리병리학회지
• /
• 제16권2호
• /
• pp.327-331
• /
• 2002

The purpose of this research was to investigate the immuno-modulatory effect and anti-carcinogenic property of Cordyceps militaris(CM) and/or Paecilomyces japonicus (PJ). The proliferation of cultured splenocytes and thymocytes were enhanced by the addition of 10 ㎍/ml of CM and/or PJ. B lymphocytes subpopulation in splenocytes were increased both CM and/or PJ administered(p.o. for 7 days)-mice. Thymic T lymphocytes, especially TH cells were significantly increased in CM-administered mice. CM and/or PJ treatment inhibited the cell viability of L 1210 mouse leukemia and HL60 human leukemia cells and induced the apoptosis of L1210 and HL60 cells. In addition, CM and/or PJ increased the hemaggutination(HA) titer against SRBC. These results suggest that CM and/or PJ have an immuno-modulatory action and anti-carcinogenic property.