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https://www.readbyqxmd.com/read/29786744/mir%C3%A2-133b-regulates-proliferation-and-apoptosis-in-high%C3%A2-glucose%C3%A2-induced-human-retinal-endothelial-cells-by-targeting-ras-homolog-family-member-a
#1
Jun Yao, Jihong Wang, Yong Yao, Kelei Wang, Qianqian Zhou, Ying Tang
The aim of the present study was to investigate the role of microRNA (miR)‑133b in high‑glucose‑induced human retinal endothelial cells (hRECs), particularly regarding its potential targeting of ras homolog family member A (RhoA). To establish the high‑glucose‑induced diabetic retinopathy (DR) model, hRECs were cultured in high‑glucose medium for 1, 2 and 3 days. An Annexin allophycocyanin (APC)/7‑aminoactinomycin D (7‑AAD) staining assay was performed to measure the apoptosis of hRECs. Next, the cells were transfected with miR‑133b inhibitors or mimics, and the cell proliferation and apoptosis were measured by MTT and Annexin‑APC/7‑AAD staining assays, respectively...
May 18, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786649/kudzu-leaf-extract-suppresses-the-production-of-inducible-nitric-oxide-synthase-cyclooxygenase-2-tumor-necrosis-factor-alpha-and-interleukin-6-via-inhibition-of-jnk-tbk1-and-stat1-in-inflammatory-macrophages
#2
Seok Hyun Eom, So-Jung Jin, Hee-Yeong Jeong, Youngju Song, You Jin Lim, Jong-In Kim, Youn-Hyung Lee, Hee Kang
Kudzu ( Pueraria montana var. lobata (Willd.) Sanjappa & Pradeep) is a perennial leguminous vine, and its root and flower have been used for herbal medicine in Asia for a long time. Most dietary flavonoids are reported to be concentrated in its root, not in its aerial parts including leaves. In this study, we investigated whether kudzu leaf and its major constituent, robinin (kaempferol-3- O -robinoside-7- O -rhanmoside) possessed anti-inflammatory activity. To test this hypothesis, we used peritoneal macrophages isolated from BALB/c mice and stimulated the cells with lipopolysaccharide (LPS) or LPS plus interferon (IFN)-γ...
May 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29775761/the-bone-anabolic-effects-of-irisin-are-through-preferential-stimulation-of-aerobic-glycolysis
#3
Dingdong Zhang, ChuHyun Bae, Junghak Lee, Jiho Lee, Zeyu Jin, Myeongmo Kang, Young Suk Cho, Jeong-Han Kim, Weontae Lee, Sung-Kil Lim
Irisin, a recently identified hormone secreted by skeletal muscle in response to exercise, exhibits anabolic effects on the skeleton primarily through the stimulation of bone formation. However, the mechanism underlying the irisin-stimulated anabolic response remains largely unknown. To uncover the underlying mechanism, we biosynthesized recombinant irisin (r-irisin) using an Escherichia coli expression system and used it to treat several osteoblast cell types. Our synthesized r-irisin could promote proliferation and differentiation of osteoblasts as evidenced by enhanced expression of osteoblast-specific transcriptional factors, including Runt-related transcription factor-2 (Runx2), Oster (Osx), as well as early osteoblastic differentiation markers such as alkaline phosphatase (Alp) and collagen type I alpha 1 (Col1a1)...
May 15, 2018: Bone
https://www.readbyqxmd.com/read/29765813/isolation-and-characterization-of-fusarium-wilt-resistance-gene-analogs-in-radish
#4
Xiaona Yu, Dong Hyun Kang, Su Ryun Choi, Yinbo Ma, Lu Lu, Sang Heon Oh, Sushil Satish Chhapekar, Yong Pyo Lim
The resistance gene analog (RGA)-based marker strategy is an effective supplement for current marker reservoir of radish disease-resistance breeding. In this study, we identified RGAs based on the conserved nucleotide-binding site (NBS) and S-receptor-like kinase (SRLK) domains. A total of 68 NBS-RGAs and 46 SRLK-RGAs were isolated from two FW-resistant radish inbred lines, B2 and YR31, and one susceptible line, YR15. A BLASTx search revealed that the NBS-RGAs contained six conserved motifs (i.e., P loop, RNBS-A, Kinase-2, RNBS-B, RNBS-C, and GLPL) and the SRLK-RGAs, contained two conserved motifs (i...
May 2018: 3 Biotech
https://www.readbyqxmd.com/read/29761660/feasibility-of-re-biopsy-and-egfr-mutation-analysis-in-patients-with-non-small-cell-lung-cancer
#5
Tae-Ok Kim, In-Jae Oh, Bo Gun Kho, Ha Young Park, Jin Sun Chang, Cheol-Kyu Park, Hong-Joon Shin, Jung-Hwan Lim, Yong-Soo Kwon, Yu-Il Kim, Sung-Chul Lim, Young-Chul Kim, Yoo-Duk Choi
BACKGROUND: In cases of EGFR-tyrosine kinase inhibitor (TKI) failure, re-biopsy may be useful to understand resistance mechanisms and guide further treatment decisions. However, performing re-biopsy is challenging because of several hurdles. We assessed the feasibility of re-biopsy in advanced non-small cell lung cancer (NSCLC) patients in real-world clinical practice. METHODS: We retrospectively reviewed the clinical and pathologic data of advanced NSCLC patients who experienced disease progression after previous treatment with EGFR-TKIs at a single tertiary hospital in Korea between January 2014 and December 2016...
May 14, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29755678/functional-invadopodia-formed-in-glioblastoma-stem-cells-are-important-regulators-of-tumor-angiogenesis
#6
Christos Petropoulos, Pierre-Olivier Guichet, Konstantin Masliantsev, Michel Wager, Lucie Karayan-Tapon
Glioblastoma (GBM) represents the most common and lethal brain tumor. High vascularization, necrosis and invasiveness are hallmarks of GBM aggressiveness with recent data suggesting the important role of glioblastoma stem cells (GSCs) in these processes. It is now well established that cancer cells employ specialized structures termed invadosomes to potentiate invasion. However, the role of these structures in GBM dissemination remains poorly investigated. In this study, we showed that GBM-isolated GSCs form invadopodia-like protrusions endowed with degradative action...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29731863/lim-and-sh3-protein-1-knockdown-suppresses-proliferation-and-metastasis-of-colorectal-carcinoma-cells-via-inhibition-of-the-mitogen-activated-protein-kinase-signaling-pathway
#7
Hongpeng Zhao, Bo Liu, Jie Li
LIM and SH3 protein 1 (Lasp-1), a focal adhesion protein, serves a critical role in the regulation of cell proliferation and migration. The role of Lasp-1, as well as the intracellular signaling pathways involved in metastasis and progression of colorectal carcinoma, remains unclear. In the present study, the regulatory effect of Lasp-1 and the underlying molecular mechanism involved in migration and invasion of colorectal carcinoma were investigated. RNA interference and overexpression in SW480 cells were performed to elucidate the role of Lasp-1...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29731856/p16-as-a-prognostic-factor-for-the-response-to-induction-chemotherapy-in-advanced-hypopharyngeal-squamous-cell-carcinoma
#8
Joon Kyoo Lee, Kyung-Hwa Lee, Sun-Ae Kim, Sun Seog Kweon, Sang-Hee Cho, Hyun-Jeong Shim, Woo-Kyun Bae, Ik-Joo Chung, Woong-Ki Chung, Tae Mi Yoon, Sang Chul Lim, Dong Hoon Lee
The present study was conducted to investigate the prognostic significance of p16 (also known as cyclin-dependent kinase inhibitor 2A) in the treatment of induction chemoradiotherapy for advanced hypopharyngeal squamous cell carcinoma (HPSCC). Patients who were treated with at least two cycles of induction chemotherapy followed by concurrent chemoradiotherapy for locally advanced HPSCC were reviewed in the study. The staining results were analyzed to examine the association between the chemotherapy response and the survival outcome...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29729309/hiv-glycoprotein-gp120-enhances-mesenchymal-stem-cell-migration-by-upregulating-cxcr4-expression
#9
Lei Li, Ryan Z L Lim, Lawrence S U Lee, Nicholas S Y Chew
BACKGROUND: HIV infection and/or the direct pathogenic effects of circulating HIV proteins impairs the physiological function of mesenchymal stem cells (MSCs), and contribute to the pathogenesis of age-related clinical comorbidities in people living with HIV. The SDF-1/CXCR4 pathway is vital for modulating MSC proliferation, migration and differentiation. HIV glycoprotein gp120 inhibits SDF-1 induced chemotaxis by downregulating the expression and function of CXCR4 in monocytes, B and T cells...
May 2, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29724861/high-amplitude-circadian-rhythms-in-drosophila-driven-by-calcineurin-mediated-post-translational-control-of-sarah
#10
Sin Ho Kweon, Jongbin Lee, Chunghun Lim, Joonho Choe
Post-translational control is a crucial mechanism for circadian timekeeping. Evolutionarily conserved kinases and phosphatases have been implicated in circadian phosphorylation and degradation of clock-relevant proteins, which sustain high-amplitude rhythms with 24 hr periodicity in animal behaviors and physiology. Here, we report a novel clock function of the heterodimeric Ca2+ /calmodulin-dependent phosphatase calcineurin and its regulator sarah ( sra ) in Drosophila Genomic deletion of the sra locus dampened circadian locomotor activity rhythms in free-running constant dark after entrainment in light-dark cycles...
May 3, 2018: Genetics
https://www.readbyqxmd.com/read/29705167/stiff-person-syndrome-with-evidence-of-non-specific-focal-myositis-secondary-to-sustained-muscle-contraction-a-case-report
#11
Seung-Wook No, Il-Gyu Lim, Du Hwan Kim
Stiff person syndrome (SPS) is a rare neuroimmunological disorder characterized by progressive muscular rigidity and spasms that affect axial and limb muscles. There have been a few reports that patients with SPS had evidences of polymyositis (PM). There have been no clear explanations about the characteristics of PM in SPS. We report the case of a 36-year-old woman with SPS in association with non-specific focal myositis secondary to sustained muscle contraction. She presented with stiffness and pain in her extremities, and diazepam and baclofen were ineffective...
April 26, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29695398/chromatin-immunoprecipitation-and-dna-sequencing-identified-a-lims1-ilk-pathway-regulated-by-lmo1-in-neuroblastoma
#12
Norihisa Saeki, Akira Saito, Yuki Sugaya, Mitsuhiro Amemiya, Hiroe Ono, Rie Komatsuzaki, Kazuyoshi Yanagihara, Hiroki Sasaki
BACKGROUND/AIM: Overall survival for the high-risk group of neuroblastoma (NB) remains at 40-50%. An integrative genomics study revealed that LIM domain only 1 (LMO1) encoding a transcriptional regulator to be an NB-susceptibility gene with a tumor-promoting activity, that needs to be revealed. MATERIALS AND METHODS: We conducted chromatin immunoprecipitation and DNA sequencing analyses and cell proliferation assays on two NB cell lines. RESULTS: We identified three genes regulated by LMO1 in the cells, LIM and senescent cell antigen-like domains 1 (LIMS1), Ras suppressor protein 1 (RSU1) and relaxin 2 (RLN2)...
May 2018: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/29683667/optimization-of-selective-mitogen-activated-protein-kinase-interacting-kinases-1-and-2-mnk1-2-inhibitors-for-the-treatment-of-blast-crisis-leukemia
#13
Hai Yan Yang, Lohitha Rao Chennamaneni, Melvyn Wai Tuck Ho, Shi Hua Ang, Eldwin Sum Wai Tan, Duraiswamy Athisayamani Jeyaraj, Yoon Sheng Yeap, Boping Liu, Esther Hq Ong, Joma Kanikadu Joy, John Liang Kuan Wee, Perlyn Kwek, Priya Retna, Nurul Dinie, Thuy Thi Hanh Nguyen, Shi Jing Tai, Vithya Manoharan, Vishal Pendharkar, Choon Bing Low, Yun Shan Chew, Susmitha Vuddagiri, Kanda Sangthongpitag, Meng Ling Choong, May Ann Lee, Srinivasaraghavan Kannan, Chandra S Verma, Anders Poulsen, Sharon Lim, Charles Chuah, Tiong Sin Ong, Jeffrey Hill, Alex Matter, Kassoum Nacro
Chronic Myeloid Leukemia (CML) is a myeloproliferative disease caused by bcr-abl1, a constitutively active tyrosine kinase fusion gene responsible for an abnormal proliferation of leukemic stem cells (LSCs). Inhibition of BCR-ABL1 kinase activity offers long term relief to CML patients. However, for a proportion of them, BCR-ABL1 inhibition will become ineffective at treating the disease and CML will progress to blast crisis (BC) CML with poor prognosis. BC-CML is often associated with excessive phosphorylated eukaryotic translation initiation factor 4E (eIF4E) which renders LSCs capable of proliferating via self-renewal, oblivious to BCR-ABL1 inhibition...
April 23, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29675883/aurantio-obtusin-an-anthraquinone-from-cassiae-semen-ameliorates-lung-inflammatory-responses
#14
Ki Sun Kwon, Ju Hee Lee, Kyung Su So, Byung Kyu Park, Hyun Lim, Jae Sue Choi, Hyun Pyo Kim
The purpose of the present study is to find the natural compound(s) having a therapeutic potential to treat lung inflammatory disorders. In our screening procedure, the methanol extract of the seeds of Cassia obtusifolia (cassiae semen) inhibited inducible nitric oxide synthase-catalyzed nitric oxide production in alveolar macrophages (MH-S). From the extract, 8 major anthraquinone derivatives were successfully isolated. They are chrysophanol, physcion, 2-hydroxy-emodin 1-methyl ether, obtusifolin, obtusin, aurantio-obtusin, chryso-obtusin, and gluco-obtusifolin, among which aurantio-obtusin (IC50  = 71...
April 20, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29673241/effect-of-acute-mid-intensity-treadmill-exercise-on-the-androgen-hormone-level-and-uncoupling-protein-1-expression-in-brown-fat-tissue-of-mouse
#15
Nahyun Kim, Jisu Kim, Choongsung Yoo, Kiwon Lim, Takayuki Akimoto, Jonghoon Park
PURPOSE: Brown adipose tissue (BAT) plays an important role in metabolizing different substances, including androgens. The aim of this study was to determine whether a single bout of aerobic exercise would increase the androgen hormone concentration in mouse BAT and whether its increase was associated with uncoupling protein-1 (UCP-1), protein kinase A (PKA)-related mechanism in BAT. METHODS: Twenty, 9-week-old ICR adult male micewere randomly divided into three groups: Control (n=6, CON), Exercise (n=7, EX), and Exercise + SRD5A1A2 inhibitor (n=7, EXIN)...
March 30, 2018: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29672525/comparative-genomic-and-transcriptomic-analysis-of-selected-fatty-acid-biosynthesis-genes-and-cnl-disease-resistance-genes-in-oil-palm
#16
Rozana Rosli, Nadzirah Amiruddin, Mohd Amin Ab Halim, Pek-Lan Chan, Kuang-Lim Chan, Norazah Azizi, Priscilla E Morris, Eng-Ti Leslie Low, Meilina Ong-Abdullah, Ravigadevi Sambanthamurthi, Rajinder Singh, Denis J Murphy
Comparative genomics and transcriptomic analyses were performed on two agronomically important groups of genes from oil palm versus other major crop species and the model organism, Arabidopsis thaliana. The first analysis was of two gene families with key roles in regulation of oil quality and in particular the accumulation of oleic acid, namely stearoyl ACP desaturases (SAD) and acyl-acyl carrier protein (ACP) thioesterases (FAT). In both cases, these were found to be large gene families with complex expression profiles across a wide range of tissue types and developmental stages...
2018: PloS One
https://www.readbyqxmd.com/read/29671714/blood-chemistry-reference-values-for-free-ranging-asiatic-black-bears-ursus-thibetanus-by-season-age-and-sex
#17
Jeong-Jin Yang, Dong-Hyuk Jeong, Yoon-Kyu Lim
Physiological characteristics, such as blood chemistry values, are valuable for evaluating the health of the animals. To our knowledge, these values have never been reported for the free-ranging Asiatic black bear ( Ursus thibetanus; ABB). Thus, 28 blood chemistry values from 50 free-ranging ABBs captured in Jirisan National Park, Republic of Korea, from 2005 to 2016 were evaluated. The aim of this study was to establish blood chemistry reference values for the free-ranging ABBs during both the hibernating and nonhibernating seasons...
April 19, 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29669761/enhancer-remodeling-and-microrna-alterations-are-associated-with-acquired-resistance-to-alk-inhibitors
#18
Mi Ran Yun, Sun Min Lim, Seon-Kyu Kim, Hun Mi Choi, Kyoung Ho Pyo, Seong Keun Kim, Ji Min Lee, You Won Lee, Jae Woo Choi, Hye Ryun Kim, Min Hee Hong, Keeok Haam, Nanhyung Huh, Jong Hwan Kim, Yong Sung Kim, Hyo Sup Shim, Ross Andrew Soo, Jin-Yuan Shih, James Chih-Hsin Yang, Mirang Kim, Byoung Chul Cho
Anaplastic lymphoma kinase (ALK) inhibitors are highly effective in ALK fusion-positive lung cancer patients, but acquired resistance invariably emerges. Identification of secondary mutations has received considerable attention, but most cases cannot be explained by genetic causes alone, raising the possibility of epigenetic mechanisms in acquired drug resistance. Here we investigated the dynamic changes in the transcriptome and enhancer landscape during development of acquired resistance to ALK inhibitors...
April 18, 2018: Cancer Research
https://www.readbyqxmd.com/read/29666673/pan-cdk-inhibition-augments-cisplatin-lethality-in-nasopharyngeal-carcinoma-cell-lines-and-xenograft-models
#19
Nicholas L Syn, Pei Li Lim, Li Ren Kong, Lingzhi Wang, Andrea Li-Ann Wong, Chwee Ming Lim, Thomas Kwok Seng Loh, Gerhard Siemeister, Boon Cher Goh, Wen-Son Hsieh
In addition to their canonical roles in regulating cell cycle transition and transcription, cyclin-dependent kinases (CDKs) have been shown to coordinate DNA damage response pathways, suggesting a rational pairing of CDK inhibitors with genotoxic chemotherapeutic agents in the treatment of human malignancies. Here, we report that roniciclib (BAY1000394), a potent pan-CDK inhibitor, displays promising anti-neoplastic activity as a single agent and potentiates cisplatin lethality in preclinical nasopharyngeal carcinoma (NPC) models...
2018: Signal Transduction and Targeted Therapy
https://www.readbyqxmd.com/read/29664014/rip-kinase-1-dependent-endothelial-necroptosis-underlies-systemic-inflammatory-response-syndrome
#20
Matija Zelic, Justine E Roderick, Joanne A O'Donnell, Jesse Lehman, Sung Eun Lim, Harish P Janardhan, Chinmay M Trivedi, Manolis Pasparakis, Michelle A Kelliher
Receptor interacting protein kinase 1 (RIPK1) has important kinase-dependent and kinase-independent scaffolding functions that activate or prevent apoptosis or necroptosis in a cell context-dependent manner. The kinase activity of RIPK1 mediates hypothermia and lethality in a mouse model of TNF-induced shock, reflecting the hyperinflammatory state of systemic inflammatory response syndrome (SIRS), where the proinflammatory "cytokine storm" has long been viewed as detrimental. Here, we demonstrate that cytokine and chemokine levels did not predict survival and, importantly, that kinase-inactive Ripk1D138N/D138N hematopoietic cells afforded little protection from TNF- or TNF/zVAD-induced shock in reconstituted mice...
April 16, 2018: Journal of Clinical Investigation
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