• Title/Summary/Keyword: Tumor Immunity

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Functional Analysis of B7-H3 in Colonic Carcinoma Cells

  • Lu, Peng;Liu, Rong;Ma, Er-Min;Yang, Tie-Jian;Liu, Jia-Lin
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.8
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    • pp.3899-3903
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    • 2012
  • B7-H3 is a newly discovered member of the B7/CD28 superfamily which functions as an important T-cell immune molecule. It has been reported recently that B7-H3 is highly expressed in many cancer cells, the data indicating that it may be a regulation factor contributing to tumor-resistance. In our study, we used bioinformatics to identify differentially expressed genes between colonic cancer cells and normal colonic cells, aiming to analyze mechanisms and identify sub-pathways closely related to progression, with the final aim of finding small molecule drugs which might interfere this progression. We found that ajmaline is one related factor which may enhance self-immunity in colon carcinoma therapy and B7-H3 plays important roles with regard to immunoreactions of colonic cancer cells. All the results indicate that H7-B3 is a favorable prognostic biomarker for colon carcinomas, providing novel information regarding likely targets for intervention.

Suppressive Effects of Young Radish Cultivated with Sulfur on Growth and Metastasis of B16-F10 Melanoma Cells

  • Kim Soo-Jin;Kim Byung-Sam;Kyung Tae-Wook;Lee Sang-Chul;Rho Chi-Woong;Choi Kyung-Rak;Hwang Hae-Jun;Choi Hye-Seon
    • Archives of Pharmacal Research
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    • v.29 no.3
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    • pp.235-240
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    • 2006
  • The oral administration of extracts of young radishes cultivated with sulfur after intravenous tumor cell injection achieved a marked reduction of pulmonary colonization in mice. Treatment of the mice with extracts of young radish cultivated with sulfur did not show any increase in the number of CD8+ or NK T cells in the spleen, indicating no influence on host immunity. Sulforaphane, which could be a candidate for an active compound from young radishes cultivated with sulfur, inhibited cell growth of B16-F10 melanoma cells. In addition, extracts of the young radish cultivated with sulfur-fed group showed enhanced quinine reductase (QR) activities in the liver and lung and a slight increase of glutathione S-transferase (GST) activity in the liver. These results suggested that the administration of extracts of young radishes cultivated with sulfur suppressed pulmonary tumorigenesis, possibly due to increased activity of detoxification enzymes in the liver and lung, and partly due to cell cytotoxicity.

A Clinical Observation of Oriental Medicine-Based Long Care for Terminal Rectal Cancer Patient with Multiple Metastasis

  • Bang, Sun-Hwi;Son, Chang-Gue
    • The Journal of Internal Korean Medicine
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    • v.29 no.3
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    • pp.567-573
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    • 2008
  • Cancer is now the leading fatal disease in every developed country. Due to very low efficiency of conventional cancer therapeutics and important aspect of quality of life (QOL), complementary/alternative medicine (CAM) has been accepted worldwide, especially by late-staged cancer patients. Oriental medicine traditionally has stressed not only the tumor itself but the body having cancer, improving cancer-related immunity and extending survival period. Herein, we report one case of a terminal staged rectal cancer patient having spread-metastasis but showing a meaningful clinical course of around four years with Oriental medicine therapies. This study aimed to report the clinical capacity of Oriental medicine for patients with cancerous disease, to help development of Oriental medicine-derived anticancer treatments.

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Immunological and Pathological Aspects of Respiratory Tract Infection with Stenotrophomonas maltophilia in BALB/c Mice

  • Zgair, Ayaid Khadem;Chhibber, Sanjay
    • Journal of Microbiology and Biotechnology
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    • v.20 no.11
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    • pp.1585-1591
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    • 2010
  • A comprehensive study on the production of inflammatory mediators in the lungs of BALB/c mice following infection with Stenotrophomonas maltophilia was conducted. The levels of pro-inflammatory cytokines, tumor necrosis factor alpha (TNF-${\alpha}$), and interleukin-1${\beta}$ (IL-1${\beta}$) were raised in the lungs of infected mice compared with control. The production of anti-inflammatory cytokine IL-10 was slightly delayed. Its peak level was on the $2^{nd}$ day, whereas the peak of pro-inflammatory cytokines was observed on day 1 after intranasal challenge. This was accompanied by a rise in myeloperoxidase (MPO) and malondialdehyde (MDA) on day 1. The increase in MPO levels matched with histopathological observations, as neutrophils infiltration was detected on the first day. Alveolar macrophages (AMs) obtained from infected animals showed a higher rate of uptake and killing when exposed to bacteria in vitro, compared with similar experiments conducted with AMs from normal mice (control). This suggests that AMs were more efficient in cleaning the bacteria. The nitric oxide (NO) production however started early during infection but reached its maximum on the $3^{rd}$ day. No mortality was observed among the infected animals, and infection was resolved by the $5^{th}$ day post infection. No drastic changes in the lung tissue were observed on histopathological examination.

Obesity, Inflammation and Diet

  • Lee, Hansongyi;Lee, In Seok;Choue, Ryowon
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.16 no.3
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    • pp.143-152
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    • 2013
  • Obesity is a state in which there is an over-accumulation of subcutaneous and/or abdominal adipose tissue. This adipose tissue is no longer considered inert and mainly devoted to storing energy; it is emerging as an active tissue in the regulation of physiological and pathological processes, including immunity and inflammation. Adipose tissue produces and releases a variety of adipokines (leptin, adiponectin, resistin, and visfatin), as well as pro- and anti-inflammatory cytokines (tumor necrosis factor-${\alpha}$, interleukin [IL]-4, IL-6, and others). Adipose tissue is also implicated in the development of chronic metabolic diseases such as type 2 diabetes mellitus or cardiovascular disease. Obesity is thus an underlying condition for inflammatory and metabolic diseases. Diet or dietary patterns play critical roles in obesity and other pathophysiological conditions. A healthy diet and some nutrients are generally considered beneficial; however, some dietary nutrients are still considered controversial. In this article, dietary factors that influence inflammation associated with obesity are discussed.

Effect of Cynandione A of Cynanchi Wilfordii Radix in RANKL and Lipopolysaccharide-induced on Osteoclastogeneis in RAW 264.7 Cells (백하수오(Cynanchi Wilfordii Radix)의 Cynandione A가 RAW 264.7 세포에서 RANKL과 LPS로 유도된 파골세포형성에 대한 영향)

  • Hwang, Joon-Ho;Yi, Mi-Ran;Kang, Chang-Hee;Bu, Hee-Jung
    • Korean Journal of Pharmacognosy
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    • v.46 no.4
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    • pp.295-302
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    • 2015
  • Cynanchi wilfordii Radix roots have been utilized as traditional medicine for variety of diseases including diabetes mellitus, aging progression and scavenging free radicals, enhancing immunity, reducing high serum cholesterol, and anti-tumor activity. However, the mechanisms underlying this effect remain poorly understood. The principal objective of this study was to determine the effect of cynandione A on osteoclast cells. Thus, we was isolated cynandione A from Cynanchi wilfordii Radix roots and evaluated the effect of cynandione A on receptor activator of nuclear factor-${\kappa}B$ ligand (RANKL)-induced osteoclast differentiation. We found that cynandione A significantly inhibited osteoclast differentiation stimulated-RANKL in RAW 264.7 cells. Cynandione A conspicuously inhibited the mRNA and protein expression of matrix metallopeptidase 9 (MMP-9), tartrate-resistant acid phosphatase (TRAP) in cynandione A treated with RANKL. Taken together, our results demonstrated that Cynanchi Wilfordii Radix may be useful treatment option of bone-related disease such as osteoporosis leads to fracture of bone and rheumatoid arthritis.

Inhibitory Effects of Artemisia asiatica on Osteoclast Formation Induced by Periodontopathogens

  • Moon, Sun-Young;Choi, Bong-Kyu;Cha, Jeong-Heon;Min, Chon-Ki;Son, Mi-Won;Yoo, Yun-Jung
    • Food Science and Biotechnology
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    • v.14 no.1
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    • pp.94-98
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    • 2005
  • Bone resorption surrounding tooth root causes tooth loss in periodontitis patients. Osteoclast has bone resorption activity. Effects of Artemisia asiatica on bone resorption induced by periodontopathogens, Porphyromonas gingivalis and Treponema denticola, were examined using co-culture systems of mouse osteoblasts and bone marrow cells. Addition of A. asiatica ethanol extract to bacterial sonicate abolished bacteria-induced osteoclastogenesis. To determine inhibitory mechanism of A. asiatica against osteoclastogenesis, effects of A. asiatica on expressions of osteoclastogenesis-inducing factors such as receptor activator of NF-${\kappa}B$ ligand (RANKL), prostaglandin $E_2\;(PGE_2)$, interleukin (IL)-1, and tumor necrosis factor (TNF)-${\alpha}$, in osteoblasts were examined. A. asiatica suppressed expressions of RANKL, $PGE_2$, IL-$1{\beta}$, and TNF-${\alpha}$ increased by each bacterial sonicate. These results suggest inhibitory action of A. asiatica against osteoclastogenesis is associated with down-regulations of RANKL, $PGE_2$ IL-$1{\beta}$, and TNF-${\alpha}$ expressions.

Inhibitory Effect of Kamisopunghwalhyeol-tang (Jiaweishufenghuoxie-tang) on Inflammatory Cytokine Production and $NF-{\kappa}B$ and AP-1 Activation in Cultured Humau Fibroblast-like Synoviocytes (가미속풍활형탕이 human fibroblast-like synoviocytes 내 염증 유발 cytokine과 전사인자에 미치는 영향)

  • 양동원;오민석;김동희
    • The Journal of Korean Medicine
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    • v.24 no.3
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    • pp.84-95
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    • 2003
  • Objective : This study was carried out to investigate the effects of Kamisopunghwalhyeol-tang (Jiaweishujenghuoxie-tang; Kami-SPHHT) on the immunity responses of the Synoviocytes isolated from the patients on rheumatoid arthritis. Methods : Cells were stimulated by $Interleukin-1{\beta}$ and Tumor Necrosis $Factor-{\alpha}$ in the presence or absence of Kami-SPHHT, and then induced cytokine mRNA levels were determined by RT-PCR and real-time quantitative RT-PCR. Results : Levels of $IL-1{\beta},{\;}IL-6,{\;}TNF-{\alpha}$, COX-2, and NOS II mRNA expressions significantly decreased in Kami-SPHHT treated cells compared to non-treated control cells. Also, DNA-binding activity of $NF-{\kappa}B$ and AP-l decreased in Kami- SPHHT treated hFLSs. Conclusion : These results suggest that Kami-SPHHT may be involved in anti-inflammatory reactions by inducing cytokine gene expression in synoviocytes, and further in vivo examination on its efficacy can provide potential application for the treatment of rheumatoid arthritis.

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CD4O Activation Protects Dendritic Cells from Anticancer Drug-Induced Apoptosis

  • Jun, Jae-Yeon;Joo, Hong-Gu
    • The Korean Journal of Physiology and Pharmacology
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    • v.7 no.5
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    • pp.255-259
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    • 2003
  • Dendritic cells (DCs) play a critical role in various immune responses involving $CD4^+$ T cells and have been used to generate anti-tumor immunity. Chemotherapy induces severe side effects including immunosuppression in patients with cancer. Although immunosuppression has been studied, the effects of anticancer drugs on DCs are not fully determined. In this study, we demonstrated that CD40 activation strongly protected DCs from 5-fluorouracil (5-FU) or mitomycin C-induced apoptosis. DCspecific surface markers, including CD11c and major histocompatibility complex (MHC) class II, were used for identifying DCs. CD 40 activation with anti-CD40 mAb significantly enhanced the viability of DCs treated with 5-FU or mitomycin C, assayed by MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide). Fluorescence staining and analysis clearly confirmed the enhancing effect of anti-CD40 mAb on the viability of DCs, suggesting that CD40 activation may transduce critical signals for the viability of DCs. Annexin V staining assay showed that CD40 significantly protected DCs from 5-FU or mitomycin C-induced apoptosis. Taken together, this study shows that CD40 activation with anti-CD40 mAb has strong anti-apoptosis effect on DCs, suggesting that CD40 activation may overcome the immunosuppression, especially downregulation of number and function of DCs in chemotherapy-treated cancer patients.

Conjugates of Enkephalin Analogs: Synthesis and Discrimination of μ and δ Opioid Receptors Based on Membrane Compartment Concept

  • Hong, Nam-Joo;Jin, Dong-Hoon;Hong, Eun-Young
    • Bulletin of the Korean Chemical Society
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    • v.30 no.3
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    • pp.599-607
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    • 2009
  • A series of conjugated cyclic and linear enkephalin analogs, Tyr-c[D-A2bu-Gly-Phe-Asp(NH-X)], where X = methyl, stearyl or$ PEG_350$, and Tyr-D-Ala-Gly-Phe-Cys(S-X), where X = methyl, octyl, or farnesyl, were synthesized in solution to investigate the receptor selectivity of opioids based on Schwyzer's membrane compartment $concepts.^{5,6}$ Cyclizations of the target compounds were achieved in high yields (> 60%) employing BOP, $NaHCO_3$ in DMF despite the steric hindrance of the bulky pendant groups. In the binding assay, the hydrophobic fatty acyl conjugates retained $\mu$-receptor selectivity. The unsaturated farnesyl conjugate exhibited the increased binding affinity than the saturated stearyl conjugate for both $\mu$-and $\delta$-opioid receptors. The PEG conjugates displayed the $\delta$-receptor selectivity. The low molecular weight $PEG_350$ conjugate exhibited the increase selectivity than the high molecular weight $PEG_5000$ conjugate to the $\delta$-receptor. The results of this study support the membrane compartment concepts.