• Title, Summary, Keyword: leukemia cell line

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Interrelationship between Cell Differentiation and Expression of mRNA for Transferrin in HL-60 Leukemia Cell Line

  • Lee, Soo-Young;Chi, Chung-Hee;Kim, You-Mie
    • BMB Reports
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    • v.33 no.4
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    • pp.308-311
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    • 2000
  • The interrelationship between the differentiation and expression of mRNA for transferrin in the HL-60 leukemia cell line was studied. Transferrin mRNA was expressed in HL-60 leukemia cells and the amount was 50% of that in the positive control cell line, HepG-2 cells. The expression of $T_f$ mRNA in HL-60 cells was not regulated by IL-1, IL-6 and $TNF-{\alpha}$, respectively. The expression of $T_f$ mRNA in the differentiated cells into a granulocyte lineage by DMSO, or all-trans RA, was up-regulated (160-170% of control cells); whereas, the expression was not regulated in the differentiated cells into a macrophage lineage by PMA. These results suggest that the differentiation to a granulocyte lineage of HL-60 leukemia cells appear to be related with the upregulation of transferrin mRNA expression.

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Differential Gene Expression Analysis in K562 Human Leukemia Cell Line Treated with Benzene

  • Choi, Sul-Ji;Kim, Ji-Young;Moon, Jai-Dong;Baek, Hee-Jo;Kook, Hoon;Seo, Sang-Beom
    • Toxicological Research
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    • v.27 no.1
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    • pp.43-48
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    • 2011
  • Even though exposure to benzene has been linked to a variety of cancers including leukemia, the detailed molecular mechanisms relevant to benzene-induced carcinogenesis remain to be clearly elucidated. In this study, we evaluated the effects of benzene on differential gene expression in a leukemia cell line. The K562 leukemia cell line used in this study was cultured for 3 h with 10 mM benzene and RNA was extracted. To analyze the gene expression profiles, a 41,000 human whole genome chip was employed for cDNA microarray analysis. We initially identified 6,562 genes whose expression was altered by benzene treatment. Among these, 3,395 genes were upregulated and 3,167 genes were downregulated by more than 2-fold, respectively. The results of functional classification showed that the identified genes were involved in biological pathways including transcription, cell proliferation, the cell cycle, and apoptosis. These gene expression profiles should provide us with further insights into the molecular mechanisms underlying benzene-induced carcinogenesis, including leukemia.

Effect of Ailanthi Cortex on the Apoptosis and Cell Cycle of HL-60 Leukemia Cell Line (HL-60 백혈병 세포의 세포고사에 미치는 저근백피의 효과)

  • Jeong Young Mok;Park Sin Ki;Lee Jun;Kim Young Mok;Yun Yong Gab;Kim Won Sin;Han Dong Min;An Won Gun;Yoon Yoo Sik;Jeon Byung Hun
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.4
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    • pp.914-922
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    • 2003
  • Ailanthus altissima has been used to settle an upset stomach, to alleviate a fever, and as an insecticide. We reported that the water extract of A. altissima induced apoptotic cell death in HL-60 human leukemia cell line. Here, we showed the dose-dependent inhibitions of cell viability by the extract, as measured by cell morphology. The cell cycle control genes are considered to play important roles in tumorigenesis. The purpose of the present study is also to investigate the effect of A. altissima on cell cycle progression and its molecular mechanism in the cells. The level of p21 protein was increased after treatment of the extract, whereas both Bcl-2 and Bax protein levels were not changed. These results suggest that A. altissima induces apoptotic cell death via p21-dependent signaling pathway in HL-60 human leukemia cell line which delete wild type p53. G1 checkpoin related gene products tested (cyclin D3, cyclin dependent kinase 4, retinoblastoma, E2F1) were decreased in their protein levels in a dose-dependent manner after treatment of the extract. Taken together, these results indicate that the increase of apoptotic cell death by A. altissima may be due to the inhibition of cell cycle in HL-60 human leukemia cell line

Growth and Differentiation Effects of Homer3 on a Leukemia Cell Line

  • Li, Zheng;Qiu, Hui-Ying;Jiao, Yang;Cen, Jian-Nong;Fu, Chun-Mei;Hu, Shao-Yan;Zhu, Ming-Qing;Wu, De-Pei;Qi, Xiao-Fei
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.4
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    • pp.2525-2528
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    • 2013
  • The Homer protein family, also known as the family of cytoplasmic scaffolding proteins, which include three subtypes (Homer1, Homer2, Homer3). Homer3 can regulate transcription and play a very important role in the differentiation and development for some tissues (e.g. muscle and nervous systems). The current studies showed that Homer3 abnormal expression changes in acute myeloid leukemia (AML). Forced expression of Homer3 in transfected K562 cells inhibited proliferation, influenced the cell cycle profile, affected apoptosis induced by $As_2O_3$ through inhibition of Bcl2 expression, and also promoted cell differentiation induced by 12-O-tetra decanoylphorbol-acetate (TPA). These results showed that Homer3 is a novel gene which plays a certain role in the occurrence and development of AML.

The Effects of ALA-PDT on Leukemia Cells and Hepatoma Cells

  • Chen, Ji-Yao;Ren, Qing-Guang;Wu, Su-Min;Wang, Pei-Nan
    • Journal of Photoscience
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    • v.9 no.2
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    • pp.512-514
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    • 2002
  • S-aminolevulinic acid (ALA) is a new kind drug used in photodynamic therapy. ALA-PDT have successfully used in superficial malignancies and some skin diseases. Here the effects of ALA-PDT were studied on leukemia cells and hepatoma cells to explore the application on different kind cancers. It was found from the fluorescence emission spectra, that after ALA incubation the sensitizer - protoporphyrin IX (PpIX) was endogenously produced in both leukemia and hepatoma cells. The fluorescence images showed that the PpIX distribute in cytoplasm. However the efficiency of ALA photodynamic inactivation to two cell lines was different. The leukemia cells were more sensitive for ALA-PDT than hepatoma cells, revealing that the ALA-PDT effect is cell line dependent. However by using ALA-Hexyl ester (He-ALA) instead of ALA, the cell photo-inactivation was improved. The PDT efficiency of He-ALA was 10 times high than that of ALA, showing He-ALA is a very promising drug in ALA-PDT.

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Inhibitory Effect of Artemisia princeps Pampan.. Extract on Growth of Cancer Cell Lines (쑥(Artemisia princeps Pampan) 추출 성분의 암세포증식 억제효과)

  • 황윤경
    • Journal of Nutrition and Health
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    • v.31 no.4
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    • pp.799-808
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    • 1998
  • To investigate the antitumor activity of mugwort (Artemisia princeps Pampan), petroleum ether extract of mugwork was partially purified by a silica gel chromatography. Among several fractions, the fraction which was obtained under the elution with acetone, showed potent cytotoxicity against mouse leukemia cell line(Ll210), human colon cancer cell line (HCT-48) and human hepatoma cell line (Hep G2) , but was less effective with normal cell line(mouse embryo cell). Acetone fraction appeared to be glycolipid by Benedict test and the major fatty acids of the lipid were C16 ; 0 , C 18: 3by GC/MS analysis.

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Regulation of Caspase Activity During Apoptosis Induced by Baicalein in HL60 Human Leukemia Cell Line

  • Byun, Boo-Hyeong;Kim, Bu-Yeo
    • Food Science and Biotechnology
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    • v.17 no.6
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    • pp.1305-1309
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    • 2008
  • Baicalein, one of the major flavonoid in Scutellaria baicalensis, has been known for its effects on proliferation and apoptosis of many tumor cell lines. Most biological effects of baicalein are thought to be from its antioxidant and prooxidant activities. In this report, baicalein was found to induce apoptosis in HL60 human promyelocytic leukemia cell line. Baicalein treatment induced DNA fragmentation and typical morphological features of apoptosis. To elucidate the mechanism of baicalein-induced apoptosis, the activities of the members of caspase family were measured. Interestingly caspase 2, 3, and 6 were significantly activated whereas caspase 1, 8, and 9 were not activated, suggesting selective involvement of specific caspases. Further, treatment with caspase inhibitors also supports the involvement of caspase 2 in apoptosis process. Although it has been reported that baicalein can induce apoptosis through many caspase pathways, the present study indicates that caspase 2 not caspase 9 pathway may be the important step in apoptosis on HL60 cell line.

Cytotoxic Activities of Green and Brown Seaweeds Collected from Jeju Island against Four Tumor Cell Lines

  • Kim, Kil-Nam;Lee, Ki-Wan;Song, Choon-Bok;Jeon, You-Jin
    • Preventive Nutrition and Food Science
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    • v.11 no.1
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    • pp.17-24
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    • 2006
  • Methanolic and aqueous extracts from 37 seaweed species (10 green and 27 brown seaweeds) collected from Jeju Island coast were prepared at high ($70^{\circ}C$) and room ($20^{\circ}C$) temperatures and examined for cytotoxic activity against 4 tumor cell lines: U937 (human monoblastoid leukemia cell line), HL60 (human promyelocytic leukemia cell line), HeLa (woman cervical carcinoma cell line) and CT26 (mouse colon carcinoma line). Both MeOH extracts of Desmarestia tabacoides and Dictyota dichotoma possessed strong cytotoxic activities against all the tumor cell lines tested, but the aqueous extract exhibited no activity. On the other hand Ecklonia cava showed strong cytotoxic activities for the $20^{\circ}C$ aqueous extract against the three tumor cells except HeLa cell. Sagassum coreanum and Sagassum siliquastrum $20^{\circ}C$ aqueous extracts also exhibited strong cytotoxic activities against U937, HL60, HeLa cells. Even though green seaweeds showed less activity than brown seaweeds, $20^{\circ}C$ aqueous extracts of Codium contractum and Codium fragile exhibited strong cytotoxic activities against HL60 or CT26 cells, respectively.

Cytotoxic Activities of Red Algae Collected from Jeju Island Against Four Tumor Cell Lines

  • Kim, Kil-Nam;Lee, Ki-Wan;Song, Choon-Bok;Ahn, Chang-Bum;Jeon, You-Jin
    • Preventive Nutrition and Food Science
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    • v.11 no.3
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    • pp.177-183
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    • 2006
  • Methanolic and aqueous extracts of 26 red algae species collected from Jeju Island coast were prepared at a high $(70^{\circ}C)$ and a room temperature $(20^{\circ}C)$ and were examined for their cytotoxic activity against 4 tumor cell lines: U-937 (human monoblastoid leukemia cell line), HL-60 (human promyelocytic leukemia cell line), B-16 (murine melanoma cell line) and HeLa (woman cervical carcinoma cell line). $20^{\circ}C$ methanolic extract of Polysiphonia japonica showed cytotoxic activity of over 50% against U-937, HL-60 and B-16 cells. On the other hand, the $20^{\circ}C$ aqueous extract of Scinaia okamurae and $70^{\circ}C$ aqueous extract of Chondrus crispus showed cell growth inhibition activity of more than 50% against HL-60 and B-16 cells. The highest cytotoxic activity was observed in the $20^{\circ}C$ aqueous extract of Scinaia okamurae against B-16 cells (80.55%).

Studies on Production of Monoclonal Antibodies Reactive with T-Cell Leukemia (인형 T세포 백혈병에 대한 단세포군 항체 생산에 관한 연구)

  • 서병석;김원배;최응칠;김병각
    • YAKHAK HOEJI
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    • v.31 no.5
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    • pp.253-265
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    • 1987
  • To develop hybridomas secreting monoclonal antibodies to be used as unlimited sources of reagents indispensable for the diagnosis and treatement of leukemic malignancy, a monoclonal antibody was generated to human pre-T leukemia cells (Jurkat). Hybridomas were produced against Jurkat cell line by fusing spleen cells from hyperimmunized mice with murine plasmacytoma cells (P3$\times$63Ag8. V653). One monoclonal antibody derived from this fusion, designated DMJ-2 was reactive with T-cell lines (Jurkat, Molt-4 and RPMI-8402) and normal peripheral E-rosette forming T cells, but unreactive with B-cell lines (Daudi, Nalm-6) and non-T, non-B cell line (K562). Conclusively DMJ-2 reactive with mature and immature T-lineage lymphoid cells.

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