• Title/Summary/Keyword: Anti-cancer

Search Result 3,336, Processing Time 0.033 seconds

Engineered adult stem cells: a promising tool for anti-cancer therapy

  • Youngdong Choi;Hong Kyu Lee;Kyung-Chul Choi
    • BMB Reports
    • /
    • v.56 no.2
    • /
    • pp.71-77
    • /
    • 2023
  • Cancers are one of the most dreaded diseases in human history and have been targeted by numerous trials including surgery, chemotherapy, radiation therapy, and anti-cancer drugs. Adult stem cells (ASCs), which can regenerate tissues and repair damage, have emerged as leading therapeutic candidates due to their homing ability toward tumor foci. Stem cells can precisely target malicious tumors, thereby minimizing the toxicity of normal cells and unfavorable side effects. ASCs, such as mesenchymal stem cells (MSCs), neural stem cells (NSCs), and hematopoietic stem cells (HSCs), are powerful tools for delivering therapeutic agents to various primary and metastatic cancers. Engineered ASCs act as a bridge between the tumor sites and tumoricidal reagents, producing therapeutic substances such as exosomes, viruses, and anti-cancer proteins encoded by several suicide genes. This review focuses on various anti-cancer therapies implemented via ASCs and summarizes the recent treatment progress and shortcomings.

Pharmacological Evaluation of Bamboo Salt (죽염의 약리작용 평가)

  • 양지선;김옥희;정수연;유태무;노용남;이숙영;정면우;안미령;최현진
    • Biomolecules & Therapeutics
    • /
    • v.7 no.2
    • /
    • pp.178-184
    • /
    • 1999
  • Bamboo salt has been used for the purpose of precaution and treatment of certain diseases including cancer. Therefore, present study was carried out to ascertain the effects of bamboo salt upon anti-cancer, anti-hypertensive, and anti-diabetic activities as well. To examine the anti-cancer activity of bamboo salt, ICR mice implanted with 1$\times$l0$^{6}$ cells of sarcoma 180 intraperitoneally had been treated daily with bamboo salt A, crude salt, and reagent-grade NaCl (0.2, 1.0, and 2.0 g/kg, p.o.) for 60 days using adriamycin (2 mg/kg) as a positive control. Neither survival rate nor body weight had been significantly influenced by all the treatments indicating that bamboo salt A did not exert the anti-cancer effect on ICR mice. Anti-hypertensive activity was examined in spontaneously hypertensive rats (SHR) which had been administered with bamboo salt A, crude salt, and reagent-grade NaCl (0.1, 0.5, and 1.0% in drinking water) for 28 days using hydralazin (2 mg/kg) as a positive control. Blood pressure and heart rate were measured at 1, 3, and 4 weeks after the starting date. Significant anti-hypertensive activity was not observed in any treated group compared to the positive control group. In order to determine if bamboo salt had anti-diabetic activity, rats in which diabetes had been induced by streptozotocin (45 mg/kg, i.m.) were treated daily with bamboo salt A, crude salt, and reagent-grade NaCl (0.2, 1.0, and 2.0 g/kg, p.o.) for 28 days using insulin (50 U/kg, s.c..) as a positive control. Blood samples were taken and analyzed at 1,2, and 4 weeks after the starting date. Bamboo salt did not cause any decreasing effect on the blood glucose levels. These results clearly demonstrated that bamboo salt A did not exert anti-cancer, anti-hypertensive, or anti-diabetic activities in the present experimental animals.

  • PDF

Immunoaugmenting Activity of Acemannan, the Polysaccharides Isolated from Aloe vera Gel (알로에 다당체 Acemannan의 면역증강 효능)

  • Im, Sun-A;Park, Chan-Su;Lee, Chong-Kil
    • Korean Journal of Pharmacognosy
    • /
    • v.47 no.2
    • /
    • pp.103-109
    • /
    • 2016
  • Aloe vera L.(Aloe barbadensis Miller) has been used for many centuries for various medical, cosmetic and neutraceutical purposes. The gel of A. vera was reported to exert numerous biological activities including wound healing, immunomodulatory, anti-cancer, anti-inflammatory, anti-bacterial, anti-viral, anti-diabetic, and anti-psoriasis activities. Acemannan, found predominantly in the inner leaf gel of A. vera, has been identified as the main active ingredient exerting diverse biological activities. In this review, we summarized the recent findings on the immunomodulatory activities of acemannan. Studies that used purified acemannan demonstrate that acemannan exerts immune-stimulating, anti-cancer, anti-viral, and hematopoiesis-increasing activities. In addition, it is being clear that most of these activities of acemannan are mediated primarily by activating professional antigen presenting cells such as macrophages and dendritic cells.

Anticancer Effects of Natural Medicinal Plant Extracts on Oral Carcinoma Cells (천연 약용식물 추출물의 구강상피세포암 세포주에 대한 항암효과)

  • 김정희;현진원;김여갑
    • Biomolecules & Therapeutics
    • /
    • v.7 no.2
    • /
    • pp.153-157
    • /
    • 1999
  • The anticancer effect of medicinal plants against two oral carcinoma cells, A253 and SCC-25 were investigated in this study. Methanol extracts from 63 medicinal plants, which have anticancer activities against other cancers such as stomach, hepatocellular or colon carcinomas, were prepared and screened for their anti- oral cancer activity by using MTT assay. Thirty one samples showed anti-oral cancer activity against either cell line used, however, other 32 samples had no anti-oral cancer activity. Among these samples methanol extract of Caesalpinia sappan revealed the strongest anti-oral cancer activity. The $IC_{50}$/ values of this extract against A253 and SCC-25 cells were 16 and 25 $\mu$g/m1, respectively. Fractions of n-hexane, dichloromethane, ethylacetate, n-buthanol and water were prepared from methanol extracts of Caesalpinia sappan, Anthriscus sylvestris, Rhus japonica, Curcuma arowatica, Inula helenium, Sinoarnudinaria reticulata, and Polygonum cuspidatum, respectively. Among these 35 fractions the n-hexane fraction of Inula helenium showed the strongest anti-oral cancer activity, the $IC_{50}$/ value was 1.6$\pm$0.3 $\mu\textrm{g}$/ml. Ten other fractions showed $IC_{50}$/ values lower than 10 $\mu\textrm{g}$/ml.

  • PDF

Anti-cancer Activities of Ginseng Extract Fermented with Phellinus linteus

  • Lee, Jong-Jin;Kwon, Ho-Kyun;Jung, In-Ho;Cho, Yong-Baik;Kim, Kyu-Joong;Kim, Jong-Lae
    • Mycobiology
    • /
    • v.37 no.1
    • /
    • pp.21-27
    • /
    • 2009
  • In the present study, the anti-cancer effects of ginseng fermented with Phellinus linteus (GFPL) extract were examined through in vitro and in vivo assays. GFPL was produced by co-cultivating ginseng and Phellinus linteus together. Ginsenoside Rg3, Rh1 and Rh2 are important mediators of anti-angiogenesis and their levels in GFPL were enriched 24, 19 and 16 times, respectively, more than that of ginseng itself through the fermentation. GFPL exhibited distinct anti-cancer effects, including growth inhibition of the human lung carcinoma cell line A549, and promotion of immune activation by stimulating nitric oxide (NO) production in Raw 264.7 cells. Further evidence supporting anti-cancer effects of GFPL was its significant prolongment of the survival of B16F10 cancer cell-implanted mice. These results suggest that the GFPL may be a candidate for cancer prevention and treatment through immune activation and anti-angiogenic effects by enriching Rg3, Rh1 and Rh2.

Involvement of reactive oxygen species in the anti-cancer activity of fenbendazole, a benzimidazole anthelmintic (Fenbendazole의 항암활성에서 활성산소종의 관련성)

  • Han, Yong;Joo, Hong-Gu
    • Korean Journal of Veterinary Research
    • /
    • v.60 no.2
    • /
    • pp.79-83
    • /
    • 2020
  • Fenbendazole (FBZ) is a benzimidazole anthelmintic that has been widely used in treatments for gastrointestinal parasites including pinworms and roundworms in animals. Recently, some studies demonstrated that FBZ has anti-cancer effects related to disruption of microtubule polymerization. In this study, we investigated whether FBZ has anti-cancer activity in HL-60 cells, a human leukemia cell line, and assessed its relationship with the production of reactive oxygen species (ROS). FBZ treatment at 0.25-1 μM significantly decreased the metabolic activity of HL-60 cells. The mitochondrial membrane potential of FBZ-treated HL-60 cells decreased in a concentration-dependent manner. Apoptosis analysis using annexin V-FITC/propidium iodide staining demonstrated that 1 μM FBZ increased the percentages of cells in apoptosis and necrosis. In addition, Hoechst 33342 staining showed the presence of broken nuclei in HL-60 cells treated with 0.5 and 1 μM FBZ. To investigate the anti-cancer mechanism of FBZ, HL-60 cells were treated with FBZ in the absence or presence of N-acetyl cysteine (NAC), an inhibitor of ROS production. NAC significantly recovered the decreased metabolic activity of HL-60 induced by 0.5 and 1 μM FBZ treatments. This study provides evidence that FBZ has anti-cancer activity in HL-60 cells provided, in part, via ROS production.

Comparisons of Properties, In Vitro Anti-Mutagenicity, and Anti-Cancer Effects of Short-Term Fermented Soybean Foods (Chungkukjang, Shuidouchi, and Natto) (콩 발효 식품(청국장, 물두시, 낫또)의 특성, In Vitro 항돌연변이 및 항암 효과)

  • Zhao, Xin;Ju, Jaehyun;Park, Kun-Young
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.46 no.10
    • /
    • pp.1253-1257
    • /
    • 2017
  • The general characteristics, anti-mutagenicity, and in vitro anti-cancer effects of Chungkukjang, Shuidouchi, and Natto were studied. Representative brands of the three types of soybean-based short-term-fermented foods were chosen and evaluated. Chungkukjang showed the highest amino and ammonia type nitrogen contents, although Natto exhibited lower levels, and Shuidouchi showed the lowest pH and high acidity. Anti-mutagenicity was assessed by the Ames test and in vitro anti-cancer effects were assessed in HT-29 human colon cancer cells. Chungkukjang exhibited the highest anti-mutagenicity and anti-cancer effects. Based on these results, Chungkukjang showed the best functional effects, and Shuidouchi showed better functional effects than Natto. Even if such efficacies depend on raw materials and processing methods, our comparison of three types of foods from representative brands shows that Chungkukjang was the best soybean-derived product in terms of overall quality, followed by Shuidouchi and Natto. These results might be due to differences in duration of fermentation, processing method, and quality of raw materials, but further research on the basis of ethnic culture and administration method of each nation should follow.

Synthesis of 2-Thio-4-aminopyrimidine Derivatives as Anti-cancer Agent

  • Lee, Sang-Hyo;Lee, Jin-Ho
    • Biomedical Science Letters
    • /
    • v.15 no.2
    • /
    • pp.105-112
    • /
    • 2009
  • The screening of the anti-cancer activity of the chemical library provided 2-thio-4-aminopyrimidine as the initial hit. The confirmation of structure and biological effect of hit was performed by synthesis and biological evaluation. The optimization of hit was performed by derivatization of substituents while keeping the core structure. The evaluation of growth inhibitory activity was carried out using SRB assay against 6 human cancer cell lines and human fibroblast. The growth inhibitory activity of compounds showed substituent dependency and more than 5 compounds showed complete growth inhibition of cancer cell lines at 10 ${\mu}M$ concentration. Chemical library screening followed by synthetic modification provided possibility that 2-thio-4-aminopyrimidine can be used as a new scaffold for the development of anti-cancer agent.

  • PDF

The Effects of Anti-cancer Response of Lonicerae Flos Herbal-acupuncture (금은화 약침의 항암효과에 관한 연구)

  • Park, Hee-Soo
    • Journal of Acupuncture Research
    • /
    • v.22 no.5
    • /
    • pp.91-97
    • /
    • 2005
  • This study was performed to investigate the effects of anti-cancer response of Lonicerae Flos Herbal-acupuncture. Experimental studies were evaluated through the anti-cancer response activities such as, cell viability, DNA fragmentation, and Apoptosis The results obtained were summarized as follows : 1. Lonicerae Flos Herbal-acupuncture($>300mg/m{\ell}$) could lead cancer cell to cell death. 2. Lonicerae Flos herbal-acupuncture($400mg/m{\ell}$) caused DNA cleavage. 3. Lonicerae Flos herbal-acupuncture($400mg/m{\ell}$) caused apoptosis in the cancer cell line. According to above mentioned results, Lonicerae Flos Herbal- acupunctuer is expected bo by effective for anticancer response.

  • PDF

Emerging Treatment in Metastatic Colorectal Cancer (전이성 대장암에서 표적치료와 면역치료)

  • Jae Hyun Kim;Seun Ja Park
    • Journal of Digestive Cancer Research
    • /
    • v.6 no.2
    • /
    • pp.45-49
    • /
    • 2018
  • Colorectal cancer (CRC) is the third most common cause of cancer-related death in the world. Although the long-term outcome of patients with metastatic CRC is still poor, target therapy including anti EGFR agents and anti VEGF agents and immunotherapy including anti PD-1 antibody and anti CTLA-4 antibody have shown clinical benefits in the treatment of patient with metastatic CRC. In the future, the personalized treatment strategy based on the clinical characteristics and biologic features of patients with metastatic CRC will be necessary. In this review, we summarized the mechanisms and clinical evidences of target therapy and immunotherapy, and the guideline of clinical practice in patients with metastatic CRC.

  • PDF