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The complex of Fas-associated factor 1 with Hsp70 stabilizes the adherens junction integrity by suppressing RhoA activation

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Journal of Molecular Cell Biology 2022年第6期14卷 14-29页

作者： Soonhwa Song Joon Kyu Park sang chui shin Jae-Jin Lee Seung Kon Hong In-Kang Song Bokyung Kim Eun Joo Song Kong-Joo Lee Eunice EunKyeong Kim Graduate School of Pharmaceutical Sciences College of PharmacyEwha Womans UniversitySeoul 03760Republic of Korea Biomedical Research Institute Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Technology Support Center Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Fas-associated factor 1 (FAF1) is a scaffolding protein that plays multiple functions, and dysregulation of FAF1 is associated withmany types of diseases such as cancers. FAF1 contains multiple ubiquitin-related domains (UBA, UBL1, UBL2, UAS, and UBX), eachdomain interacting with a specific partner. In particular, the interaction of UBL1 with heat shock protein 70 (Hsp70) is associatedwith tumor formation, although the molecular understanding remains unknown. In this study, the structural analysis revealed thatHis160 of FAF1 is important for its interaction with Hsp70. The association of Hsp70 with FAF1 is required for the interaction withIQGAP1. FAF1 negatively regulates RhoA activation by FAF1–Hsp70 complex formation, which then interacts with IQGAP1. Thesesteps play a key role in maintaining the stability of cell-to-cell junction. We conclude that FAF1 plays a critical role in the structureand function of adherens junction during tissue homeostasis and morphogenesis by suppressing RhoA activation, which induces theactivation of Rho-associated protein kinase, phosphorylation of myosin light chain, formation of actin stress fiber, and disruptionof adherens junction. In addition, depletion of FAF1 increased collective invasion in a 3D spheroid cell culture. These results provideinsightinto how the FAF1–Hsp70 complex acts as a novelregulator ofthe adherens junction integrity. The complex can be a potentialtherapeutic target to inhibit tumorigenesis and metastasis.

关键词： human Fas-associated factor 1(FAF1) heat shock protein 70(Hsp70) adherens junction RhoA activation IQGAP1 X-ray crystallography FAF1–Hsp70 complex

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A novel chitosan nanocapsule for enhanced skin penetration of cyclosporin A and effective hair growth in vivo

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Nano Research 2019年第12期12卷 3024-3030页

作者： Jin Sil Lee Youngmin Hwang Hyeryeon Oh Sunghyun Kim Jin-Hwa Kim Jeung-Hoon Lee Yong chui shin Giyoong Tae Won II Choi Center for Convergence Bioceramic Materials Convergence R&D DivisionKorea Institute of Ceramic Engineering and Technology202Osongsaengmyeong l-rof Osong-eupHeungdeok-guCheongjuChungbuk 28160Republic of Korea School of Materials Science and Engineering Gwangju Institute of Science and Technology123 Cheomdan-gwagiroBuk-guGwangju 61005Republic of Korea SKINMED Co. Ltd.Daejeon 34028Republic of Korea Amicogen Inc.64 Dongburo 1259JinsungJinju 52621Republic of Korea

Hair loss due to medical conditions,such as alopecia,male pattern baldness,and cancer chemotherapy treatment,has been a comm onproblem for many in *** n A(CsA),a fungal metabolite,has been reported to be a hair growth modulatory agent and is apotential drug for hair ***,the effect of topical application of CsA is limited by its poor water *** deliverysystems developed to enhance its solubility still showed poor skin *** overcome these limitations,in this study,we have developed a novel chitosan nanocapsule platform using Pluro nic F127 and chitosan without any chemical crosslinking or complicated preparati on steps for the enhanced water solubility and high tran sdermal penetration of *** chitosan nanocapsules(ChiNCs)optimized in terms of structural stability by using chitosan with various molecular weights ranging from 3 to 100 kDa enhanced the skin permeation of CsA through humancadaver skin in *** administration of the CsA loaded ChiNCs in creased the hair follicles by c.a.7 times higher than that of thecontrol group,and effectively induced hair growth in C57BL/6 mice in *** results suggest that ChiNCs could be used as a platform foreffective transdermal delivery of various hydrophobic drugs.

关键词： chitosan nanocapsule cyclosporin A transdermal delivery hair growth

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Phase-controlled synthesis of thermally stable nitrogen-doped carbon supported iron catalysts for highly efficient Fischer-Tropsch synthesis

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Nano Research 2019年第10期12卷 2568-2575页

作者： Jin Hee Lee Hack-Keun Lee Dong Hyun Chun Hyunkyung Choi Geun Bae Rhim Min Hye Youn Heondo Jeong shin Wook Kang Jung-ll Yang Heon Jung chui Sung Kim Ji Chan Park Clean Fuel Laboratory Korea Institute of Energy ResearchDaejeon 34129Republic of Korea Department of Chemical Engineering University of SeoulSeoul 02504Republic of Korea Advanced Energy and System Technology University of Science and TechnologyDaejeon 34113Republic of Korea Department of Physics Kookmin UniversitySeoul 02707Republic of Korea

Iron-based nan oparticles with un iform and high particle dispersi on,which are supported on carb on structures,have been used for various ***,their preparation still suffers from complicated synthesis involving multiple steps and from the high price of precursors and solve *** the prese nt work,a new carbon en capsulated iron-carbide nano particle supported on n itroge rvdoped porous carbon(Fe5C2@C/NPC)structure was *** was made using a simple solid-state reaction with sequential thermal ***5C2@C/NPC is a highly active and stable catalyst for the high-temperature Fischer-Tropsch synthesis *** showed very high hydrocarbon productivity(4.71 gHc gcat^-1·h^-1)with high CO conversions(up to 96%).

关键词： iron-carbide one-pot synthesis nitrogen-doped graphene Fischer-Tropsch synthesis Mdssbauer spectroscopy

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The current status of hormone treatment for prostate cancer patients in Korean real-world practice:a multi-institutional observational study

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Asian Journal of Andrology 2019年第2期21卷 115-120页

作者： Jung Kwon Kim Jung Jun Kim Taek Won Gang Tae Kyun Kwon Hong Sup Kim Seung chui Park Jae-shin Park Jong-Yeon Park Seok Joong Yoon Youn-Soo Jeon Jin Seon Cho Kwan Joong Joo Sung-Hoo Hong Seok-Soo Byun the Korean Urological Oncology Society Department of Urology Seoul National University Bundang HospitalSeongnam 13620Korea Department of Urology Hallym University Sacred Heart HospitalAnyang 14068Korea Department of Urology Kangbuk Samsung HospitalSeoul 03181Korea Department of Urology Seoul St.Mary HospitalSeoul 06591Korea 不详 Department of Urology Chonnam National University HospitalGwangju 61469Korea School of Medicine Kyungpook National University Medical CenterDaegu 41404Korea Department of Urology Konkuk University Medical CenterSeoul 05080Korea Department of Urology Wonkwang University HospitalIksan 54538Korea Department of Urology Daegu Catholic University Medical CenterDaegu 41911Korea Department of Urology Ulsan UniversityGangneung Asan HospitalGangneung 25440Korea Department of Urology Chungbuk National University HospitalCheongju 28644Korea Department of Urology Soonchunhyang University HospitalCheonan 31151Korea

We aimed to evaluate the current nationwide trend,efficacy,safety,and quality of life(QoL)profiles of hormone treatment in real-world practice settings for prostate cancer(PCa)patients in Korea.A total of 292 men with any biopsy-proven PCa(TanyNanyMany)from 12 institutions in Korea were included in this multi-institutional,observational study of prospectively collected *** luteinizing hormone-releasing hormone(LHRH)agonists were allowed to be investigational *** was defined as(1)the rate of castration(serum testosterone≤50 ng dl^-1)at 4-week visit and(2)breakthrough(serum testosterone>50 ng dl^-1 after castration).Safety assessments included routine examinations for potential adverse events,laboratory tests,blood pressure,body weight,and bone min era I density(BMD,at baseli ne and at the last follow-up visit).QoL was assessed using the Expa nded Prostate Cancer Index Composite-26(EPIC-26).The most comm on initial therapeutic regimen was LHRH agonist with an ti-androge n(78.0%),and the most commonly used LHRH agonist for combination and mono therapy was leuprolide(64.0%for combi natio n and 58.0%for monotherapy).The castration and breakthrough rates were 78.4%and 6.6%,*** laboratory results related to dyslipidemia worsened after 4 weeks of hormone *** addition,the mean BMD T-score was significantly lower at the last follow-up(mean:-1.950)compared to baseline(mean:-0.195).The mean total EPIC-26 score decreased from 84.8(standard deviation[s.d.]:12.2)to 78.3(s.d.:8.1),with significant deterioration only in the urinary domain(mean:23.5 at baseli ne and 21.9 at the 4-week visit).These findi ngs dem on strate the n ationwide trend of current practice setti ngs in hormone treatment for PCa in Korea.

关键词： efficacy hormonal treatment Korean population prostate cancer safety trend

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