• Environmental Analysis Health and Toxicology
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• 제22권3호
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• pp.263-269
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• 2007

Chitosan is a depolymerized and partially deacetylated derivative of chitin. We investigated the cytotoxicity of chitosan in cancer cell lines, such as P388, L1210, HCT-15, SK-HepG-1 and mouse splenocytes as a normal cell by MTT assay. To clarify whether chitosan enhances cytotoxicity of anticancer drugs, we also examined the cytotoxicity of combined treatment with chitosan and anticancer drugs, such as cisplatin, mitomycin C, and 5-fluorouracil in cancer cell lines in vitro. Chitosan ($37.5\;{\mu}g/mL,\;75\;{\mu}g/mL,\;112.5\;{\mu}g/mL,\;and\;150\;{\mu}g/mL$) showed concentration-dependent cytotoxicity in the cancer cell lines. In addition, chitosan showed relatively lower cytotoxicity in normal cells than in the cancer cell lines. Particularly, this trend was significant at high doses of chitosan, i.e. $112.5\;{\mu}g/mL,\;and\;150\;{\mu}g/mL$. Thus, these results suggest that chitosan may selectively induce the growth inhibition in cancer cell lines, compared to normal cells. Furthermore. the co-treatment of chitosan and anticancer drugs exhibited an apparant synergistic cytotoxicity in murine lymphoma cell lines, i.e. P388 and L1210 at $37.5\;{\mu}g/mL$ of chitosan rather than at $75\;{\mu}g/mL$ of chitosan, but such phenomenon could not be observed in solid tumor cell lines, i.e. HCT-15 and SK-HepG-1. However, chitosan did'nt reduced the cytotoxicity against normal mouse splenocytes induced by anticancer drugs. Therefore, it is concluded that the combination of chitosan and anticancer drugs might be useful for the cancer chemotherapy.

• 한국식품영양학회지
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• 제16권1호
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• pp.15-21
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• 2003

버섯 균사체로부터 분리한 단백다당체의 Th1 cell 증식효과 및 각종 암세포에 대한 세포독성을 조사하였다. 단백다당체 시료는 영지버섯, 아가리쿠스, 표고버섯, 운지버섯, 그리고 상황버섯을 10$0^{\circ}C$에서 3시간 열수 추출하는 방법으로 조제하였다. Th1 cell의 세포증식을 조사한 결과, 10mg/$m\ell$ 농도에서 모든 시료가 40% 이상 억제하는 효과가 있는 것으로 나타났다. 7 종류의 암세포를 이용한 암세포 생존율을 조사한 결과, 1mg/$m\ell$ 농도에서 P388D1와 L1210에서 아가리쿠스는 2.4%와 39.7%, 표고버섯은 48.4%와 52.5%의 생존율을 보였다. Sarcoma 180으로 복수암을 유발시킨 마우스에게 아가리쿠스와 표고버섯으로부터 추출한 단백다당체를 섭취시킬 경우 생존율이 27~40%까지 유의적으로 증가하는 것으로 나타났다.

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

• 동의생리병리학회지
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• 제23권2호
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• pp.381-388
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• 2009

The present study was conducted to investigate the anti-allergic activity of Galgeunhaegi-Tang(GHT). We investigated the anti-allergic effects of GHT in RBL-2H3 basophilic leukemia cells by compound48/80, a mast cell degranulator and compound 48/80 induced anaphylactic shock in mice. GHT significantly inhibited ${\beta}$-hexosaminidase and histamine release from compound 48/80 stimulated RBL-2H3 cells. In addition, GHT effectively inhibited anaphylactic shock in mice by 40% at a dose 100 mg/mouse versus PBS treated control after the l.p injection(8 mg/kg) of compound 48/80. The in vitro anti-inflammatory activities of GHT in LPS-stimulated RAW 264.7 cells were investigated. GHT inhibited NO production in LPS-stimulated RAW 264.7 cells and effectively dowregulated the expression of iNOS mRNA and iNOS protein expression in LPS-stimulated RAW 264.7 cells. These result provide evidences that GHT may be beneficial in the treatment of allergic inflammtory disease.

• 약학회지
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• 제38권6호
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• pp.627-636
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• 1994

Several Pt(II) and Pt(IV) complexes of N,N'-bis(2-hydroxyethyl)ethylenediamine(2-HEen) and N,N'-bis(2-chloroethyl) ethylenediamine(2-CEen) as carrier ligand were prepared. Water soluble Pt complexes were also synthesized by modification of leaving groups. The cytotoxicity of these compounds against leukemia L1210 and P388 cell in vitro were examined. The Pt complexes containing 2-CEen showed more effective cytotoxicity than those containing 2-HEen. Through the nephrotoxicity tests on the primary cultured proximal tubular cells of rabbit kidney and human kidney cells in vitro, Pt complexes with 2-CEen showed higher than those with 2-HEen which were consistent with cytotoxicity but showed very low nephrotoxicity compared with cisplatin. Also the values of BUN and creatinine in serum of Pt complexes were reduced remarkably compared with cisplatin, therefore it can be concluded that new Pt complexes seems to have much lower nephrotoxicity than cisplatin.

• 한국식품과학회지
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• 제27권4호
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• pp.445-448
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• 1995

Acetobacter aceti OLS-001 균체에서 추출한 추출물의 농도가 높을수록, 배양시간이 길수록 암세포의 증식 억제 효과가 높게 나타났으며, 현미경 관찰에서 본래의 암세포 형태가 변형되고 세포막사이의 경계막이 흐트러지면서 사멸하는 현상을 나타냈다.

• 한국자원식물학회지
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• 제5권2호
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• pp.73-84
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• 1992

Many types of compounds have been isolated from higher plants till now, that is, alkaloids, terpenes, lignans, steroids and so on. One of them, named as RA series Cyclic hexapeptides isolated from Rubia akane and R. cordijofia also have strong antineoplastic activity against various types of tumors. Till now 10 kinds ofRA series compounds were isolated and named as RA - I, II, III, IV, V, VI, VII, VIII, IX and X. Moreover,monogl-ucoside of RA - V newly Isolated from same plant. Many kinds of derivatives including natural RAcompounds were tested for QSAR, and one of them, RA - VII was screened up as a most suitable substance asan antitumor agent. RA - VII(=RA-700) has strong cytotoxic activity against KB cells, P388 Iymphocyticleukemia and MM2 mammary carcinoma cells. RA - VII has been under investigation for Phase I clinical trials.

• 대한약리학회지
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• 제29권2호
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• pp.283-295
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• 1993

일부 malignant tumor에 Pt-complex의 임상 응용 과정에서 신장독성등의 심한 부작용이 문제점으로 지적되고 있다. 이 연구에서는 기존의 cisplatin보다 항암효과는 우수하면서, 부작용을 감소시킨 새로운 Pt-complex의 개발에 역점을 두었다. 본 연구에서는 합성한 Pt (II) complex는 carrier ligand로서 1, 2-diaminocyclohexane (dach)을 사용하였고, leaving group으로는 diphosphine류인 1, 3-bis (diphenylphosphine)의 propane (DPPP) 및 ethane (DPPE)을 도입하였으며, 물에 대한 용해도를 높이기 위해 dinitrate로 만들었다. 새로이 합성한 [Pt (II)-(trans-1-dach)(DPPP)] $(NO_3)_2$ 과 [Pt (II)(trans-1-dach)(DPPE)] $(NO_3)_2$ 는 원소 분석, IR 및 $^{13}C-NMR$ 분석 data에 의하여 위의 물질임이 확인되었다. KHPC-001과 KHPC-002는 MTT assay method에 의한 항암활성 연구를 통하여 P-388, L-1210 lymphocytic leukemia cell에서 항암효과가 인정되었으며, 이 항암효과는 대조 약물로 사용된 cisplatin에 비하여 우수하였다. KHPC-001과 KHPC-002는 토끼의 신세뇨관 세포와 인체의 신피질 세포를 이용한 cytotoxity 및 thymidine 섭취율과 인체 신피질 조직 배양을 이용한 glucose consumption 실험을 통하여 모두 cisplatin보다 신장독성이 현저히 감소되었다. 이상의 결과로 보아 Pt (II) complex는 carrier ligand와 leaving group의 선택에 따라 항암활성의 증가와 신독성의 감소를 일으키는 요인으로 보여지며, 이 연구에서 만들어진 두 Pt (II) complex는 앞으로 다각적인 검토를 거쳐 새로운 anticancer chemotherapeutic agent로 개발될 가능성이 있을 것으로 생각된다.

• 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.172.1-172.1
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• 2003

Luotonin A was isolated from Peganum nigellastrum Bunge (Zygophyllaceae) which was named Luo-Tuo-Hao in China and used as a Chinese traditional medicine for the treatment of rheumatism, abscess, and inflammation. The basic fractions of P. nigellastrum showed antitumor activtity, and the origin of such an activity was recently revealed by identifying its constituent luotonin A which inhibited the growth of leukemia P-388 cells ($IC_50$ = 1.8 $\mu$g/mL). Such an intriguing properties of luotonin A led developments of efficient methods for total synthesis. (omitted)

• 대한약리학회지
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• 제31권1호
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• pp.103-114
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• 1995

일부 malignant tumor에 Pt-complex의 일상 응용 과정에서 신장독성등의 심한 부작용이 문제점으로 지적되고 있다. 이 연구에서는 기존의 cisplatin보다 항암효과는 우수하면서, 부작용을 감소시킨 새로운 Pt-complex의 개발에 역점을 두었다. 본 연구에서 합성한 Pt(Ⅱ) complex는 carrier ligand로서 1,2-diaminocyclohexane(dach)을 사용하였고, leaving group으로는 diophosphine류인 1,2-bisdiphenylphosphinoethane(DPPE)을 도입하였으며, 물에 대한 용해도를 높이기 위해 dinitrate로 만들었다. 새로이 합성한 [Pt(Ⅱ)(trans-d-dach)(DPPE)]$(NO_3)_2$는 원소 분석, IR 및 $^{13}C-NMR$ 분석 data에 의하여 위의 물질임이 확인되었다. MTT assay method에 의한 항암활성 연구를 통하여 P-388, L-1210 lymphocytic leukemia cell과 SK-OV3 난소암세포에서 항암효과가 인정되었으며, 이 항암효과는 대조 약물로 사용된 cisplatin과 유사하였다. 토끼의 신세뇨관 세포와 인체의 신피질 세포를 이용한 cytotoxity 및 thymidine 섭취율과 인체 신피질 조직 배양을 이용한 glucose consumption 실험을 통하여 모두 cisplatin보다 신장독성이 현저히 감소되었다. 이상의 결과로 보아 Pt(Ⅱ)complexes는 carrier ligand와 leaving group의 선택에 따라 항암활성의 증가와 신독성의 감소를 일으키는 요인으로 보여지며, 이 연구에서 만들어진 Pt(Ⅱ)complex는 앞으로 다각적인 검토를 거쳐 새로운 항암화학요법제로 개발될 가능성이 있을 것으로 생각된다.