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Won, Kyung-Jong,Lee, Kang Pa,Kim, Dong-Ku,Jung, Seung Hyo,Lee, Chang-Kwon,Lee, Dong Hyen,Yu, Su Yeol,Park, Se Hyung,Lee, Hwan Myung,Kim, Bokyung S. Karger AG 2013 Journal of vascular research Vol.50 No.3
<P>Abstract</P><P><B><I>Background:</I></B> This study was attempted to identify new molecules expressed on the plasma membrane of human umbilical vein endothelial cells (HUVECs) using monoclonal antibody-based proteomics technology and to determine the effect of the identified antibody on vascular reactivity. <B><I>Methods:</I></B> Twenty-two antibodies were developed from rats inoculated with HUVECs, and their effects were determined by observing vascular reactivity. <B><I>Results: </I></B>Among the 22 antibodies, the C-7 antibody significantly inhibited endothelium-dependent vasorelaxation in response to acetylcholine (ACh) but not to histamine. Moreover, the C-7 antibody did not affect norepinephrine-induced contraction in either the endothelium-intact or -denuded aorta. A proteomics study involving immunoprecipitation of the C-7 antibody with biotinylated HUVECs showed that this antibody binds to plasma membrane proteins corresponding to immunoglobulin heavy chain (VHDJ region), chaperonin-containing T-complex polypeptide 1 and α-actinin 4. The muscarinic M3 ACh receptor and α-actinin 4 were colocalized on the plasma membrane of HUVECs, and the colocalization was found to increase in response to ACh and was inhibited by pretreatment with the C-7 antibody. <B><I>Conclusions: </I></B>These results demonstrate that monoclonal C-7 antibody exerts an inhibitory effect on endothelium-dependent vasorelaxation induced by ACh and that this response may at least partially result from the inhibition of α-actinin 4.</P><P>Copyright © 2013 S. Karger AG, Basel</P>
Won, Kyung-Jong,Park, Sung-Won,Lee, Seunghoon,Kong, Il-Keun,Chae, Jung-Il,Kim, Bokyung,Lee, Eun-Jong,Kim, Dong-Ku 한국조명·전기설비학회 2015 한국조명·전기설비학회 학술대회논문집 Vol. No.
<P>The triggering receptor expressed on myeloid cells (TREM) family, which is abundantly expressed in myeloid lineage cells, plays a pivotal role in innate and adaptive immune response. In this study, we aimed to identify a novel receptor expressed on hematopoietic stem cells (HSCs) by using <I>in silico</I> bioinformatics and to characterize the identified receptor. We thus found the TREM-like transcript (TLT)-6, a new member of TREM family. TLT-6 has a single immunoglobulin domain in the extracellular region and a long cytoplasmic region containing 2 immunoreceptor tyrosine-based inhibitory motif-like domains. TLT-6 transcript was expressed in HSCs, monocytes and macrophages. TLT-6 protein was up-regulated on the surface of bone marrow-derived and peritoneal macrophages by lipopolysaccharide stimulation. TLT-6 exerted anti-proliferative effects in macrophages. Our results demonstrate that TLT-6 may regulate the activation and proliferation of macrophages.</P>
Increased HoxB4 Inhibits Apoptotic Cell Death in Pro-B Cells
Sung-Won Park,Kyung-Jong Won,Yong-Soo Lee,Hye Sun Kim,Yu-Kyung Kim,Hyeon-Woo Lee,Bokyung Kim,Byeong Han Lee,Jin-Hoi Kim,Dong-Ku Kim 대한생리학회-대한약리학회 2012 The Korean Journal of Physiology & Pharmacology Vol.16 No.4
HoxB4, a homeodomain-containing transcription factor, is involved in the expansion of hematopoietic stem cells and progenitor cells in vivo and in vitro, and plays a key role in regulating the balance between hematopoietic stem cell renewal and cell differentiation. However, the biological activity of HoxB4 in other cells has not been reported. In this study, we investigated the effect of overexpressed HoxB4 on cell survival under various conditions that induce death, using the Ba/F3 cell line. Analysis of phenotypical characteristics showed that HoxB4 overexpression in Ba/F3 cells reduced cell size, death, and proliferation rate. Moreover, the progression from early to late apoptotic stages was inhibited in Ba/F3 cells subjected to HoxB4 overexpression under removal of interleukin-3-mediated signal, leading to the induction of cell cycle arrest at the G2/M phase and attenuated cell death by Fas protein stimulation in vitro. Furthermore, apoptotic cell death induced by doxorubicin-treated G2/M phase cell-cycle arrest also decreased with HoxB4 overexpression in Ba/F3 cells. From these data, we suggest that HoxB4 may play an important role in the regulation of pro-B cell survival under various apoptotic death environments.
Gyung Mo Son,In Young Lee,Mi Sook Yun,Jung-Hea Youn,Hong Min An,Kyung Hee Kim,Seung Mi Yeo,Bokyung Ku,Kun Hyung Kim,Myeong Suk Kwon 대한외과학회 2022 Annals of Surgical Treatment and Research(ASRT) Vol.103 No.6
Purpose: This prospective, single-center, open-label, therapeutic confirmatory, randomized clinical trial aimed to assess the alleviation of anal pain by applying structured anal skin care including skin protectants in rectal cancer patients with low anterior resection syndrome (LARS) combined with anal pain. Methods: From December 2017 to May 2020, 42 patients with LARS (scores of ≥21) and anal pain (visual analogue scale [VAS] score of ≥3) were randomly assigned and observed for 4 weeks. The conventional treatment consisted of dietary management, sitz baths, prohibition of anal scrubbing, loperamide, and dioctahedral smectite. In the anal care group, cleanser, barrier cream, and barrier spray were applied to the anal skin after defecation following the conventional treatment. The primary outcome was analgesic effect on anal pain after 2 weeks of structured treatment (anal care group) or conventional (control group). The cutoff for analgesic effect was a decrease in the anal pain score (VAS score of ≥2 or ≥30% reduction). Results: As a primary outcome, the analgesic effect was significantly higher in the anal care group (P = 0.034). The incontinence-associated dermatitis skin condition score was significantly improved in the anal care group than control group after 4 weeks (P = 0.023). There were no significant differences in LARS scores and quality of life scores between 2 groups. Conclusion: Structured anal skin care has a significant analgesic effect in reducing anal pain and improving anal skin conditions in patients with LARS after rectal cancer surgery.