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Myogenesis 촉진에 관여하는 최근 천연물의 동향
채종범(Jongbeom Chae),남주옥(Ju-Ock Nam) 한국생명과학회 2020 생명과학회지 Vol.30 No.2
최근까지 근력 개선 또는 만성 근육 손실을 유발하는 질병을 치료하기 위해 많은 연구가 있어왔지만, 지금까지 근력 개선 유도를 위해 대표적으로 사용되는 약물은 단백질 동화 스테로이드(AAS)계열의 steroidal androgen들이 주로 이용되어 왔다. AAS는 다양한 근육 및 체중 손실성 치료를 목적으로 처방되고 있으나, 장기간 또는 과다한 복용은 피부질환, 생식 및 내분비 기능 저하, 심혈관 질환 등 다양한 부작용을 초래한다고 잘 알려져 있다. 따라서, 상대적으로 부작용이 적은 근육 신생을 촉진하는 천연물을 탐색하는 연구는 매우 중요하다. 현재까지 천연물의 처리로 인한 근육 신생의 촉진은 대표적으로 세가지 기전의 영향을 받으며, 그 기전으로는 근육조절인자(MRF)의 양성 조절, 단백질 합성 기전의 활성화 및 단백질 분해기전의 억제가 있다. 본 리뷰에서는, 근육 신생 촉진 효과가 보고된 Black ginseng, Plum 등과 같은 식물 추출물 및 Creatine, Catechin 및 여러 지방산 등 천연물 유래 단일물질에 대하여 소개하고, 더 나아가 현재까지 알려진 상기의 천연물질들의 처리에 의한 근육 신생 촉진 기전에 대하여 기전별로 요약하고자 한다. As the elderly population increases, it is becoming important to prevent and treat muscle loss caused by aging or disease. Steroidal androgen in the protein assimilation steroid (AAS) system is mainly used to induce muscle improvement, but it is well known that long-term or excessive doses of AAS result in various side effects, although they are prescribed for various muscle and weight loss treatments. Research is therefore underway to explore natural substances that promote muscle renewal with relatively few side effects. However, despite many studies on the improvement of skeletal muscle and the reduction of muscle disease using natural products, there is still a lack of significant clinical results and mechanism studies. The promotion of muscle regeneration through treatment with natural substances typically involves three mechanisms: positive control of the muscle modulating factor (MRF), activation of the protein synthesis mechanism, and inhibition of the protein breakdown mechanism. A study of plant extracts that are known to have muscle neoplasmic stimulation effects, such as black ginseng, plum, and nutmeg, as well as single substances derived from natural products, such as creatine, catechin, and several fatty acids, is therefore described. We also summarize the mechanisms that have been identified so far through which each of these extracts or single materials facilitates muscle regeneration and the signaling pathways that they mediate.
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인간 유방암 세포주 MCF-7에 대한 farrerol의 p38 MAPK 활성화와 세포사멸 유도를 통한 항암 효과
채종범 ( Jongbeom Chae ),이슬기 ( Seul Gi Lee ),남주옥 ( Ju-ock Nam ) 한국응용생명화학회 2020 Journal of Applied Biological Chemistry (J. Appl. Vol.63 No.2
Farrerol is a flavanone isolated from the traditional Chinese herb ‘Man-shan-hong’ (Rhododendron dauricum L.). Farrerol has been reported to have various bioactivities including anti-oxidant, anti-inflammation, and anti-fungal. However, anticancer effect of farrerol has not yet been reported in MCF-7 breast cancer cells. In the present study, we investigated the anti-cancer effect of farrerol on MCF-7 cells. Farrerol decreased viability and induced apoptosis of MCF-7 cells in a dose dependent manner. Ferrerol exhibited a significant anti-proliferation effect with a half-maximal inhibitory concentration (IC<sub>50</sub>) values of 145.04±1.4 μM in MTT assay, when MCF-7 cells were treated with ferrerol for 48 h. Also, ferrerol induced apoptotic bodies of MCF-7 cells as evaluated by TUNEL assay and Annexin V/PI staining using FACS. By mechanism of action, ferrerol regulated the activation of p38 mitogen-activated protein kinase and altered the expression level of BAX, Bcl-2, and Poly ADP Ribose Polymerase in MCF- 7 cells. In summary, our finding demonstrated that ferrerol has anti-cancer effect through regulating the activation and expression of apoptosis-related proteins in MCF-7 cells.
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Seo Yeonju,Chae Jongbeom,Nam Ju-Ock 한국응용생명화학회 2023 Applied Biological Chemistry (Appl Biol Chem) Vol.66 No.-
Cancer is the major cause of death worldwide, and the anticancer effect of ginseng and its main root has been studied. However, study of fine root of ginseng (FRG) is still insufficient. The purpose of this study was to discover a new anticancer effect from FRG, which does not show an anticancer effect, through a bioconversion technique. We measured and compared cell viability in FRG- and bioconverted fine root of ginseng (BFRG)-stimulated CT26 cells to investigate differences caused by bioconversion. Cell viability of CT26 was suppressed upon treatment with BFRG, unlike FRG. The effect of BFRG on apoptosis and cell cycle arrest was investigated by flow cytometry. BFRG-stimulated CT26 cells showed an increased apoptotic cells and cell cycle arrest. Additionally, BFRG induced mitochondrial impairment by reducing the expression of anti-apoptosis protein Bcl-2. When confirming the signaling pathway, it was found that the p38 MAPK pathway was activated by BFRG. Collectively, our results reveal anticancer effects against colorectal cancer and represent potential targets for anticancer drug development.
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Crataegus pinnatifida Bunge root extract induces apoptosis of murine lung carcinoma cells in vitro
Minjeong Kwon,Jongbeom Chae,Ju-Ock Nam 한국응용생명화학회 2023 Journal of Applied Biological Chemistry (J. Appl. Vol.66 No.-
This study sought to evaluate the anticancer effects of Crataegus pinnatifida Bunge root extract (CPE) on murine Lewis lung carcinoma cells (LLC1) in vitro. CPE treatment (2.5, 5, 10 μg/mL, 24 h) of LLC cells led to a dose-dependent decrease in cell viability, while CPE treatment did not have a cytotoxic effect on non-cancer cells (NIH/3T3). CPE affects LLC by flipping the plasma membrane and making the membrane more permeable; by flow cytometry, CPE-induced annexin V and propidium iodide positivity, indicating induction of apoptosis in LLC cells. In addition, CPE enhanced the expression of apoptotic proteins caspase-3 and poly (ADP-ribose) polymerase 1 (PARP-1). CPE upregulated the proapoptotic protein BCL-2-associated X while downregulating the anti-apoptotic protein B-cell lymphoma 2 (BCL-2), suggesting that CPE induces apoptosis via the mitochondrial pathway. Furthermore, CPE upregulated the phosphorylation of the mitogen activated protein kinase p38. In conclusion, the results suggest that CPE has an anticancer effect in LLC cells by inducing apoptosis via p38.
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TGFBI remodels adipose metabolism by regulating the Notch-1 signaling pathway
Lee Seul Gi,Chae Jongbeom,Woo Seon Min,Seo Seung Un,Kim Ha-Jeong,Kim Sang-Yeob,Schlaepfer David D.,Kim In-San,Park Hee-Sae,Kwon Taeg Kyu,Nam Ju-Ock 생화학분자생물학회 2023 Experimental and molecular medicine Vol.55 No.-
Extracellular matrix proteins are associated with metabolically healthy adipose tissue and regulate inflammation, fibrosis, angiogenesis, and subsequent metabolic deterioration. In this study, we demonstrated that transforming growth factor-beta (TGFBI), an extracellular matrix (ECM) component, plays an important role in adipose metabolism and browning during high-fat diet-induced obesity. TGFBI KO mice were resistant to adipose tissue hypertrophy, liver steatosis, and insulin resistance. Furthermore, adipose tissue from TGFBI KO mice contained a large population of CD11b+ and CD206+ M2 macrophages, which possibly control adipokine secretion through paracrine mechanisms. Mechanistically, we showed that inhibiting TGFBI-stimulated release of adipsin by Notch-1-dependent signaling resulted in adipocyte browning. TGFBI was physiologically bound to Notch-1 and stimulated its activation in adipocytes. Our findings revealed a novel protective effect of TGFBI deficiency in obesity that is realized via the activation of the Notch-1 signaling pathway.
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