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Oh JH, Kim CW, Kim SE, Lee DH. Does the Bed Frame Deflection Occur along with Mattress Deflection during In-Hospital Cardiopulmonary Resuscitation? an Experiment Using Mechanical Devices. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791602300205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objectives When we perform chest compression on a patient on a bed, the mattress and bed frame can be depressed together with the patient's chest. This study was conducted to assess whether bed frame deflection occurred during chest compressions. Methods We designed a firm bed (“bed like the ground,” BLG) to assess the bed frame deflection in the Stryker Trauma Stretcher (STS) and the ER stretcher cart (ER-SC). The STS included a soft mattress and the ER-SC a hard mattress. We performed 50 continuous chest compressions on the Resusci Anne Skill Reporter with CPRmeter in each experiment. The experiments were done in four settings. Test 1 included the BLG; test 2 included a mattress and backboard on each bed; test 3 included the mattress of each bed and a backboard on the BLG; and test 4 included the mattress of each bed on the BLG. We calculated the mattress and bed frame deflections using the gaps of compression depths between the values measured by Resusci Anne and CPRmeter. Results The mattress deflections of the STS and ER-SC mattress were determined to be 11.2 and 0.67 mm, respectively. The bed frame deflection for the STS and ER-SC were 0.95 and 5.17 mm, respectively. Conclusion The study confirms that bed frame deflection will occur when we perform chest compressions on the manikin lying on a bed. Additionally, the bed frame deflections differ depending on the type of bed. (Hong Kong j.emerg.med. 2016;23:35-41)
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Kim SE, Lee SJ, Noh H, Lee DH, Kim CW. Is There Any Difference in Cardiopulmonary Resuscitation Performance According to Different Instructional Models of Cardiopulmonary Resuscitation Education for Junior and Senior High School Students? HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791101800602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective This study aims to determine whether or not cardiopulmonary resuscitation (CPR) skills differ according to different instructional models for CPR education and training for junior and senior high school students. Methods This was a prospective and randomised study including 519 junior and senior high school students. After the lecture on CPR, students practiced the skill on the manikin. Group 1 used model 1 and Group 2 used model 2 for practical training and practical skills and CPR performance quality were evaluated. Results Data from skill tests were analysed in 229 students in group 1 and 210 students in group 2. The total score of sequence skill tests was 17.8±2.0 points. During 2 cycles, no chest elevation was observed in 33.3% and was significantly lower in group 1. There were no significant differences in the frequency of proper ventilation and in ventilation volume between the 2 groups. Excessive ventilation was more frequently observed in group 1 and insufficient ventilation was observed more frequently in group 2. The percentage of the frequency of a proper chest compression rate was 80.5±31.2% and there were no significant differences in proper and insufficient depths, mean rate and recoil of the chest in chest compression between the 2 groups. Conclusions There were differences in CPR skills according to different CPR training manikins. Therefore, certain conditions seem to be considered in selection of instructional models for CPR psychomotor skills. (Hong Kong j.emerg.med. 2011;18:375-382)
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Affiliation(s)
- SE Kim
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - SJ Lee
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - H Noh
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - DH Lee
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
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Abstract
Pneumomediastinum is an uncommon radiographic finding resulting from various causes, such as trauma, infection and unknown causes. The pneumomediastinum due to minor trauma is rarely reported and treatment and diagnostic process is not established. We report on a 20-year-old female patient who initially presented with neck pain and dyspnoea following manual strangulation. Her chest X-ray and computed tomography (CT) of neck imaging showed subcutaneous emphysema and extensive pneumomediastinum, but pneumothorax was not shown. She was transferred to the thoracic surgery and admitted to the general ward. The patient's condition improved and she was discharged on the sixth hospital day. In conclusion, patients with pneumomediastinum following a minor strangulation injury can be observed alone without invasive testing or repeated imaging. CT scans are of great value for safe observation in determined patients and for the further evaluation of pneumomediastinum.
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Affiliation(s)
| | | | | | - JH Hong
- Chung-Ang University Hosiptal, Department of Thoracic and Cardiovascular Surgery, College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, Korea
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Park TH, Cho HJ, Lee JW, Kim CW, Chong Y, Chang CH, Park KS. Could -79 °C Spray-Type Cryotherapy Be an Effective Monotherapy for the Treatment of Keloid? Int J Mol Sci 2017; 18:ijms18122536. [PMID: 29186868 PMCID: PMC5751139 DOI: 10.3390/ijms18122536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/13/2017] [Accepted: 11/24/2017] [Indexed: 11/16/2022] Open
Abstract
Cryotherapy has been regarded as an effective modality for the treatment of keloids, and the spray-type device is one of the novel cryotherapeutic units. However, the biological mechanisms and therapeutic effects of this technique are incompletely studied. We evaluated the clinical efficacy of our cryotherapy protocol with molecular and pathologic evidence for the treatment of keloids. We evenly split each of ten keloid lesions into a non-treated (C-) and treated (C+) area; the C+ area was subjected to two freeze-thaw cycles of spray-type cryotherapy using -79 °C spray-type CryoPen™. This treatment was repeated after an interval of two weeks. The proliferation and migration abilities of the fibroblasts isolated from the dermis under the cryotherapy-treated or untreated keloid tissues (at least 5 mm deep) were compared and pathologic findings of the full layer were evaluated. Molecular analysis revealed that the number of dermal fibroblasts was significantly higher in C+ group as compared with C- group. The dermal fibroblasts from C+ group showed more than two-fold increase in the migration ability as compared with the fibroblasts from C- group. The expression of matrix metallopeptidase 9 was increased by more than two-fold and a significant increase in transforming growth factor beta 1 expression and Smad2/3 phosphorylation level was observed in C+ group. C+ group showed more extensive lymphoplasmacytic infiltration with thicker fibrosis and occasional "proliferating core collagen" as compared with C- group. Thus, -79 °C spray-type cryotherapy is ineffective as a monotherapy and should be used in combination with intralesional corticosteroids or botulinum toxin A for favourable outcomes in the treatment of thick keloids.
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Affiliation(s)
- Tae Hwan Park
- Department of Plastic and Reconstructive Surgery, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea.
| | - Hyeon-Ju Cho
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea.
| | - Jang Won Lee
- Department of Plastic and Reconstructive Surgery, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea.
| | - Chan Woo Kim
- Department of Plastic and Reconstructive Surgery, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea.
| | - Yosep Chong
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea.
| | - Choong Hyun Chang
- Department of Plastic and Reconstructive Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
| | - Kyung-Soon Park
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea.
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Chong Y, Kim CW, Kim YS, Chang CH, Park TH. Complete excision of proliferating core in auricular keloids significantly reduces local recurrence: A prospective study. J Dermatol 2017; 45:139-144. [PMID: 29083048 PMCID: PMC5813184 DOI: 10.1111/1346-8138.14110] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/26/2017] [Indexed: 12/02/2022]
Abstract
Keloids are mysterious soft‐tissue tumors that are characterized by excessive reparative processes composed of collagen‐forming fibroblasts and inflammatory cells. Generally, complete tumor excision regardless of sufficient margin is considered as a first‐line treatment because they are considered reactive rather than a neoplastic condition. Recently, a specific part of the keloids is being highlighted as an important microstructure for local recurrence, but there has been very little evidence. We conducted a prospective study to evaluate the relationship of recurrence and several clinicopathological parameters with specific focus on surgical resection margin. A total 87 cases of auricular keloids from 71 patients were included. The resection margins were carefully evaluated by an exhaustive grossing method and thorough microstructural assessment. During up to 48.8 months of the follow‐up period, local recurrence has been monitored and documented. The clinicopathological data including symptoms, bilaterality, size, location, prior treatment and operation history, gross type and etiology were collected and analyzed. Positive margin status was significantly related to tumor recurrence (P < 0.0001). Complete excision warrants a lower recurrence of auricular keloids in an Asian population. The most reasonable explanation for this seems to be remnant “proliferating core”, which may serve a key role in local recurrence.
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Affiliation(s)
- Yosep Chong
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chan Woo Kim
- Department of Plastic and Reconstructive Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Yong Sung Kim
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, Korea
| | - Choong Hyun Chang
- Department of Plastic and Reconstructive Surgery, School of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, Korea
| | - Tae Hwan Park
- Department of Plastic and Reconstructive Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea
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Oh ET, Kim CW, Kim HG, Lee JS, Park HJ. Brusatol-Mediated Inhibition of c-Myc Increases HIF-1α Degradation and Causes Cell Death in Colorectal Cancer under Hypoxia. Am J Cancer Res 2017; 7:3415-3431. [PMID: 28912885 PMCID: PMC5596433 DOI: 10.7150/thno.20861] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/20/2017] [Indexed: 01/09/2023] Open
Abstract
HIF-1 (hypoxia-inducible factor-1) regulates the expression of ~100 genes involved in angiogenesis, metastasis, tumor growth, chemoresistance and radioresistance, underscoring the growing interest in targeting HIF-1 for cancer control. In the present study, we investigated the molecular mechanisms underlying brusatol-induced HIF-1α degradation and cell death in colorectal cancer under hypoxia (0.5% O2). Under hypoxia, pretreatment of cancer cells with brusatol increased HIF-1α degradation and cancer cell death in a dose-dependent manner. This effect was mediated by activation of prolyl hydroxylases (PHDs), as evidenced by the block of brusatol-induced HIF-1α degradation and cancer cell death by both pharmacological inhibition and siRNA-mediated knockdown of PHDs. In addition, a ferrous iron chelator (2,2'-bypyridyl) blocked brusatol-induced degradation of HIF-1α and cancer cell death in hypoxia by inhibiting PHD activation. We further found that brusatol inhibited c-Myc expression, and showed that overexpression of c-Myc prevented brusatol-induced degradation of HIF-1α and cancer cell death by increasing mitochondrial ROS production and subsequent ROS-mediated transition of ferrous iron to ferric iron. Consistent with these results, treatment of tumor-bearing mice with brusatol significantly suppressed tumor growth by promoting PHD-mediated HIF-1α degradation. Collectively, our results suggest that brusatol-mediated inhibition of c-Myc/ROS signaling pathway increases HIF-1α degradation by promoting PHD activity and induces cell death in colorectal cancer under hypoxia
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Kim CW, Pokutta-Paskaleva A, Kumar S, Timmins LH, Morris AD, Kang DW, Dalal S, Chadid T, Kuo KM, Raykin J, Li H, Yanagisawa H, Gleason RL, Jo H, Brewster LP. Disturbed Flow Promotes Arterial Stiffening Through Thrombospondin-1. Circulation 2017; 136:1217-1232. [PMID: 28778947 DOI: 10.1161/circulationaha.116.026361] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 07/26/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND Arterial stiffness and wall shear stress are powerful determinants of cardiovascular health, and arterial stiffness is associated with increased cardiovascular mortality. Low and oscillatory wall shear stress, termed disturbed flow (d-flow), promotes atherosclerotic arterial remodeling, but the relationship between d-flow and arterial stiffness is not well understood. The objective of this study was to define the role of d-flow on arterial stiffening and discover the relevant signaling pathways by which d-flow stiffens arteries. METHODS D-flow was induced in the carotid arteries of young and old mice of both sexes. Arterial stiffness was quantified ex vivo with cylindrical biaxial mechanical testing and in vivo from duplex ultrasound and compared with unmanipulated carotid arteries from 80-week-old mice. Gene expression and pathway analysis was performed on endothelial cell-enriched RNA and validated by immunohistochemistry. In vitro testing of signaling pathways was performed under oscillatory and laminar wall shear stress conditions. Human arteries from regions of d-flow and stable flow were tested ex vivo to validate critical results from the animal model. RESULTS D-flow induced arterial stiffening through collagen deposition after partial carotid ligation, and the degree of stiffening was similar to that of unmanipulated carotid arteries from 80-week-old mice. Intimal gene pathway analyses identified transforming growth factor-β pathways as having a prominent role in this stiffened arterial response, but this was attributable to thrombospondin-1 (TSP-1) stimulation of profibrotic genes and not changes to transforming growth factor-β. In vitro and in vivo testing under d-flow conditions identified a possible role for TSP-1 activation of transforming growth factor-β in the upregulation of these genes. TSP-1 knockout animals had significantly less arterial stiffening in response to d-flow than wild-type carotid arteries. Human arteries exposed to d-flow had similar increases TSP-1 and collagen gene expression as seen in our model. CONCLUSIONS TSP-1 has a critical role in shear-mediated arterial stiffening that is mediated in part through TSP-1's activation of the profibrotic signaling pathways of transforming growth factor-β. Molecular targets in this pathway may lead to novel therapies to limit arterial stiffening and the progression of disease in arteries exposed to d-flow.
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Affiliation(s)
- Chan Woo Kim
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Anastassia Pokutta-Paskaleva
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Sandeep Kumar
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Lucas H Timmins
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Andrew D Morris
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Dong-Won Kang
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Sidd Dalal
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Tatiana Chadid
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Katie M Kuo
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Julia Raykin
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Haiyan Li
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Hiromi Yanagisawa
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Rudolph L Gleason
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.)
| | - Hanjoong Jo
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.).
| | - Luke P Brewster
- From Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., A.P.-P., S.K., D.-W.K., J.R., R.L.G., H.J., L.P.B.); Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea (C.W.K.); Department of Surgery, Emory University, Atlanta, GA (A.P.-P., A.D.M., T.C., K.M.K., H.L., L.P.B.); Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (L.H.T.); Department of Bioengineering, University of Utah, Salt Lake City (L.H.T.); Mercer University School of Medicine, Macon, GA (S.D.); Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan (H.Y.); George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (R.L.G.); Surgical and Research Services, Atlanta VA Medical Center, Decatur, GA (L.P.B.); and Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta (L.P.B.).
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Kim TH, Kang K, Kim EM, Park HE, Park EH, Kim I, Kim JM, Kim CW, Ihm SH, Chang K. Mesenchymal stem cells promote the infiltration of myeloid derived suppressor cells in a mouse myocardial infarction model. Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kim TH, Kim EM, Park HE, Park EH, Kim I, Kim JM, Kang K, Kim CW, Ihm SH, Chang K. miR299, 145, and 494 regulate human aortic smooth muscle cell aging via direct targeting of VEZF1. Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kim HY, Kim CW, Choi JY, Yu DS, Kim JW, Han KD, Park YG, Lee YB. Atopic dermatitis is inversely associated with hepatitis B antigen positivity: a population-based cohort study. J Eur Acad Dermatol Venereol 2017. [PMID: 28646620 DOI: 10.1111/jdv.14428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND No clear association between hepatitis B virus (HBV) infection and atopic dermatitis (AD) has been established. Some studies have reported that subjects with HBV had an increased risk of atopy; other studies reported an inverse association between HBV seropositivity and allergic diseases. OBJECTIVE We evaluated the association between AD and hepatitis B antigen (HBsAg) positivity using Korean National Health and Nutrition Examination Survey data. METHODS In total, 14 776 participants aged >19 years were included in the analysis. Multiple logistic regression analyses were used to evaluate the odds ratio of HBsAg positivity in association with AD and asthma. RESULTS The prevalence of HBsAg positivity was lower in individuals with AD than in those without AD (mean [SE], 0.7% [0.4] vs. 3.7% [0.2]; P < 0.001). However, HBsAg positivity was not significantly associated with asthma (3.7% [0.2] vs. 2.8% [0.8]; P < 0.001). HBsAg positivity decreased the risk of AD significantly (OR = 0.223; 95% CI = 0.069-0.72). CONCLUSIONS This study demonstrates an inverse association between AD and HBsAg positivity using a nationwide, population-based, cross-sectional health examination and survey.
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Affiliation(s)
- H Y Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - C W Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J Y Choi
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D S Yu
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J W Kim
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - K D Han
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y G Park
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y B Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Jung YS, Chae CH, Kim YO, Son JS, Kim CW, Park HO, Lee JH, Shin YH, Kwak HS. The relationship between serum vitamin D levels and sleep quality in fixed day indoor field workers in the electronics manufacturing industry in Korea. Ann Occup Environ Med 2017; 29:25. [PMID: 28652922 PMCID: PMC5482959 DOI: 10.1186/s40557-017-0187-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/18/2017] [Indexed: 12/19/2022] Open
Abstract
Background Although recent studies have investigated the influence of vitamin D on sleep patterns, there is a lack of research on the relationship between vitamin D and sleep patterns in Korean workers. This study focused on the relationship between serum vitamin D levels and sleep in fixed day indoor field workers in the electronics manufacturing industry in Korea. Methods The 1472 subjects who were included in this study were selected from fixed day workers in the electronics manufacturing industry who had received a worker’s special health examination at a hospital in Changwon, South Gyeongsang Province between January 2015 and December 2015. Nighttime workers and those who showed symptoms of depression were excluded from this study. The sociodemographic and lifestyle variables of the participants were investigated, including age, sex, marital status, level of education, body mass index, smoking habits, alcohol consumption habits, and regular exercise. Work-related factors were evaluated, such as employee tenure and occupational stress. Serum 25-hydroxyvitamin D was measured as an indicator of vitamin D levels, and quality of sleep was evaluated using the Pittsburgh Sleep Quality Index (PSQI) translated into Korean. Results The subjects had a mean serum vitamin D level of 13.70 ± 5.93 ng/mL. Vitamin D deficiency, defined as a serum vitamin D level of <10 ng/mL, was found in 24.8% of males and significantly more frequently in females (47.6%). Poor sleep quality was reported by 19.8% of participants with serum vitamin D levels ≥10 ng/mL and by 21.7% of those with serum vitamin D levels <10 ng/mL, which was a significant difference (P = .007). Multiple logistic regression analysis adjusting for significant variables found that poor sleep quality was more likely in those with vitamin D deficiency than those with higher serum vitamin D levels (odds ratio = 1.36; 95% CI, 1.01–1.82). A comparison of serum vitamin D levels and PSQI components showed that the mean scores for subjective sleep quality, sleep latency, and sleep duration were significantly higher in the vitamin D-deficient participants, indicating that the vitamin D-deficient participants had poorer sleep quality. Conclusions This study investigated serum vitamin D levels in fixed day indoor field workers in the manufacturing industry in Korea and analyzed the relationship of vitamin D deficiency with sleep quality. A significant correlation was found between serum vitamin D deficiency and poor sleep quality. Based on the results of this study, sleep disorder management for workers can be improved by providing regular examinations checking their serum vitamin D levels and supplying vitamin D to workers with serum vitamin D deficiency to enhance their quality of sleep.
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Affiliation(s)
- Young Saeng Jung
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Chang Ho Chae
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Young Ouk Kim
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Jun Seok Son
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Chan Woo Kim
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Hyoung Ouk Park
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Jun Ho Lee
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Young Hoo Shin
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Ho Sung Kwak
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
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Nakhaei E, Kim CW, Funamoto D, Sato H, Nakamura Y, Kishimura A, Mori T, Katayama Y. Design of a ligand for cancer imaging with long blood circulation and an enhanced accumulation ability in tumors. Medchemcomm 2017; 8:1190-1195. [PMID: 30108828 PMCID: PMC6072043 DOI: 10.1039/c7md00102a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 04/01/2017] [Indexed: 12/16/2022]
Abstract
The use of imaging agents to visualize tumor cells is an advantageous technique to achieve a more efficient intraoperative diagnosis and effective debulking operations. Targeting of these agents to certain receptors that are overexpressed in cancer cells, such as the folate receptor, aids in tumor targeting. Several imaging probes have been developed using this strategy. However, these ligand-targeting cancer imaging probes are rapidly cleared during systemic delivery due to their small size, which compromises their biodistribution and circulation. Improving the detection of cancer requires higher accumulation and effective retention activities of imaging probes. Here we developed a new design for a folate-fluorophore conjugate that is modified with palmitoyl. Palmitic acid has a strong binding affinity with human serum albumin (HSA), which has the ability to form non-covalent host-guest complexes and has a blood half-life of 19 days. In this strategy, HSA is expected to serve as an endogenous nanocarrier for the designed probe in blood circulation. We hypothesized that via a reversible interaction with HSA, this simple palmitoyl modification on a folate-fluorophore conjugate can induce long blood circulation of the probe. Our folate-targeted probe could show longer blood circulation compared to the probe which lacks palmitoyl.
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Affiliation(s)
- Elnaz Nakhaei
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
| | - Chan Woo Kim
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
| | - Daiki Funamoto
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
| | - Hikari Sato
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
| | - Yuta Nakamura
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
| | - Akihiro Kishimura
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
- Department of Applied Chemistry , Faculty of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
- International Research Center for Molecular Systems , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Takeshi Mori
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
- Department of Applied Chemistry , Faculty of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Yoshiki Katayama
- Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka , 819-0395 , Japan . ; Tel: +81 092 802 2850
- Department of Applied Chemistry , Faculty of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
- International Research Center for Molecular Systems , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
- Center for Advanced Medical Innovation , Kyushu University , 744 Motooka, Nishi-Ku , Fukuoka 819-0395 , Japan
- Department of Biomedical Engineering , Chung Yuan Christian University , 200 Chung Pei Rd., Chung Li , Taiwan , 32023 ROC
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Lee J, Oh ET, Yoon H, Kim CW, Han Y, Song J, Jang H, Park HJ, Kim C. Mesoporous nanocarriers with a stimulus-responsive cyclodextrin gatekeeper for targeting tumor hypoxia. Nanoscale 2017; 9:6901-6909. [PMID: 28503686 DOI: 10.1039/c7nr00808b] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tissue hypoxia developed in most malignant tumors makes a significant difference to normal tissues in the reduction potential and the activity of various bioreductive enzymes. Given the superior enzymatic activity of NAD(P)H:quinone oxidoreductase 1 (NQO1, a cytosolic reductase up-regulated in many human cancers) in hypoxia relative to that in normoxia, NQO1 has great potential for targeting hypoxic tumor cells. In the present report, the core concept of hypoxic NQO1-responsive mesoporous silica nanoparticles (MSNs) is based on the reasoning that the superior enzymatic activity of NQO1 within hypoxic cancer cells can be utilized as a key stimulus for the selective cleavage of an azobenzene stalk triggering the on-off gatekeeping for controlled release of guest drugs. We corroborate that the NQO1 specifically triggers to release the entrapped drug in the nanochannel of MSNs by reductive cleavage of the azobenzene linker only under hypoxic conditions in a controlled manner not only in vitro but also in vivo. Therefore, our results indicate that Si-Azo-CD-PEG could be utilized as a hypoxic cancer-targeting drug delivery carrier, and further suggest that the azobenzene linker could generally be useful for the construction of hypoxic NQO1-responsive nanomaterials.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea.
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Yu GE, Kwon S, Hwang JH, An SM, Park DH, Kang DG, Kim TW, Kim IS, Park HC, Ha J, Kim CW. Effects of cell death-inducing DFF45-like effector B on meat quality traits in Berkshire pigs. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029408. [PMID: 28549200 DOI: 10.4238/gmr16029408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cell death-inducing DFF45-like effector (CIDE) B is a member of the CIDE family of apoptosis-inducing factors. In the present study, we detected a single nucleotide polymorphism (SNP), c.414G>A, which corresponds to the synonymous SNP 414Arg, in CIDE-B in the Berkshire pigs. We also analyzed the relationships between the CIDE-B SNP and various meat quality traits. The SNP was significantly associated with post-mortem pH24h, water-holding capacity (WHC), fat content, protein content, drip loss, post-mortem temperature at 12 h (T12) and 24 h (T24) in a co-dominant model (P < 0.05). A significant association was detected between the SNP and post-mortem pH24h, fat content, protein content, drip loss, shear force, and T24 in gilts; and color parameter b*, WHC, and T24 in barrows (P < 0.05). The SNP was significantly correlated with the fat content, and CIDE-B mRNA expression was significantly upregulated during the early stage of adipogenesis, suggesting that CIDE-B may contribute towards initiation of adipogenesis (P < 0.05). Furthermore, CIDE-B mRNA was strongly expressed in the liver, kidney, large intestine, and small intestine, and weakly expressed in the stomach, lung, spleen, and white adipose tissue. These results indicate that the CIDE-B SNP is closely associated with meat quality traits and may be a useful DNA marker for improving pork quality.
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Affiliation(s)
- G E Yu
- Swine Science and Technology Center, , , South Korea
| | - S Kwon
- Swine Science and Technology Center, , , South Korea
| | - J H Hwang
- Swine Science and Technology Center, , , South Korea
| | - S M An
- Swine Science and Technology Center, , , South Korea
| | - D H Park
- Swine Science and Technology Center, , , South Korea
| | - D G Kang
- Swine Science and Technology Center, , , South Korea
| | - T W Kim
- Swine Science and Technology Center, , , South Korea
| | - I-S Kim
- Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Gyeongnam, South Korea
| | - H C Park
- Dasan Pig Breeding Co., Namwon-si, South Korea
| | - J Ha
- Swine Science and Technology Center, , , South Korea
| | - C W Kim
- Swine Science and Technology Center, , , South Korea
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Jo JL, Hwang JH, Kwon SG, Park DH, Kim TW, Kang DG, Yu GE, Kim IS, Ha JG, Kim CW. Association between a non-synonymous HSD17B4 single nucleotide polymorphism and meat-quality traits in Berkshire pigs. Genet Mol Res 2016; 15:gmr-15-gmr15048970. [PMID: 27819726 DOI: 10.4238/gmr15048970] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are useful genetic markers that allow correlation of genetic sequences with phenotypic traits. It is shown here that HSD17B4, a bifunctional enzyme mediating dehydrogenation and anhydration during β-oxidation of long-chain fatty acids, contains a non-synonymous SNP (nsSNP) of chr2:128,825,976A>G, c.2137A>G, I690V, within the sterol carrier protein-2 domain of the HSD17B4 gene, by RNA-Seq of liver RNA. The HSD17B4 mRNA was highly expressed in the kidney and liver among various other tissues in four pig breeds, namely, Berkshire, Duroc, Landrace, and Yorkshire. The nsSNP was significantly associated with carcass weight, backfat thickness, and drip loss (P < 0.05). Furthermore, HSD17B4 may play a crucial role during the early stages of myogenesis when expression of its mRNA was significantly high. In conclusion, HSD17B4 may serve as a possible regulator of muscle development, and its identification should help to select for improved economic traits of Berkshire pigs such as carcass weight, backfat thickness, and drip loss.
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Affiliation(s)
- J L Jo
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J H Hwang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - S G Kwon
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D H Park
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - T W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D G Kang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - G E Yu
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - I S Kim
- Department of Animal Resource Technology, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J G Ha
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - C W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
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Oh ET, Kim CW, Kim SJ, Lee JS, Hong SS, Park HJ. Docetaxel induced-JNK2/PHD1 signaling pathway increases degradation of HIF-1α and causes cancer cell death under hypoxia. Sci Rep 2016; 6:27382. [PMID: 27263528 PMCID: PMC4893693 DOI: 10.1038/srep27382] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 05/18/2016] [Indexed: 12/29/2022] Open
Abstract
HIF-1 (hypoxia-inducible factor-1) regulates the expression of more than 70 genes involved in angiogenesis, tumor growth, metastasis, chemoresistance, and radioresistance. Thus, there is growing interest in using HIF-1 inhibitors as anticancer drugs. Docetaxel, a Food and Drug Administration-approved anticancer drug, is reported to enhance HIF-1α degradation. Here, we investigated the molecular mechanism underlying docetaxel-induced HIF-1α degradation and cancer cell death under hypoxic conditions. Docetaxel pretreatment enhanced the polyubiquitination and proteasome-mediated degradation of HIF-1α, and increased cancer cell death under hypoxic conditions. Docetaxel also activated the prolyl hydroxylase, PHD1, in hypoxia, and pharmacological inhibition or siRNA-mediated knockdown of PHD1 prevented docetaxel-induced HIF-1α degradation and cancer cell death. Additionally, siRNA-mediated JNK2 knockdown blocked docetaxel-induced HIF-1α degradation and cancer cell death by inhibiting PHD1 activation. A luciferase reporter assay revealed that inhibition of the JNK2/PHD1 signaling pathway significantly increased the transcriptional activity of HIF-1 in docetaxel-treated cancer cells under hypoxia. Consistent with these results, docetaxel-treated JNK2-knockdown tumors grew much faster than control tumors through inhibition of docetaxel-induced PHD1 activation and degradation of HIF-1α. Our results collectively show that, under hypoxic conditions, docetaxel induces apoptotic cell death through JNK2/PHD1 signaling-mediated HIF-1α degradation.
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Affiliation(s)
- Eun-Taex Oh
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon 22212, Republic of Korea.,Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon 22212, Republic of Korea
| | - Chan Woo Kim
- Department of Microbiology, College of Medicine, Inha University, Incheon 22212, Republic of Korea
| | - Soo Jung Kim
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon 22212, Republic of Korea
| | - Jae-Seon Lee
- Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon 22212, Republic of Korea.,Department of Molecular Medicine, College of Medicine, Inha University, Incheon 22212, Republic of Korea
| | - Soon-Sun Hong
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon 22212, Republic of Korea.,Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon 22212, Republic of Korea
| | - Heon Joo Park
- Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon 22212, Republic of Korea.,Department of Microbiology, College of Medicine, Inha University, Incheon 22212, Republic of Korea
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Kim JY, Choi YY, Kim CW, Sung YK, Yoo DH. Bone Scintigraphy in the Diagnosis of Rheumatoid Arthritis: Is There Additional Value of Bone Scintigraphy with Blood Pool Phase over Conventional Bone Scintigraphy? J Korean Med Sci 2016; 31:502-9. [PMID: 27051232 PMCID: PMC4810331 DOI: 10.3346/jkms.2016.31.4.502] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 12/18/2015] [Indexed: 01/15/2023] Open
Abstract
We aimed to investigate the value of bone scintigraphy with additional blood pool phase (BSBP), compared with conventional bone scintigraphy (CBS), in the assessment of rheumatoid arthritis (RA). A total of 242 patients (43 males, 199 females; 14-78 years) with arthralgia, and underwent BSBP were retrospectively analyzed. On the first physical examination, active arthritis was found in 128 of the 242 patients. Clinical diagnosis was made by a rheumatologist on the basis of the 1987 American College of Rheumatology (ACR) criteria, which are considered to be the gold standard. The diagnostic performances and prognostic value of BSBP and CBS were analyzed in the total patients with arthralgia and in the patients with arthritis. The sensitivity of BSBP (84.2%, 80/95) were significantly higher than that of CBS (74.8%, 72/95) in the patients with arthralgia (P = 0.039). When BSBP was interpreted with the results of elevated/positive anti-CCP antibody, its accuracy over CBS also became significantly higher (86.0%, 208/242 vs. 83.1%, 201/242 respectively, P = 0.021). The diagnostic odds ratio of BSBP positivity was higher than CBS positivity in the patients with arthralgia (26.0, 12.9-52.4 vs. 21.1, 10.8-41.3) and with arthritis (12.0, 4.9-29.4 vs. 10.0, 4.2-23.4). Both BSBP and CBS appear to provide acceptable accuracy and comparable diagnostic performance for diagnosis of RA. However, in the patients with arthralgia, BSBP was found to be more sensitive than CBS and more accurate when interpreted with the result of anti-CCP antibody. This could help physicians diagnose RA in daily clinical practice.
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Affiliation(s)
- Ji Young Kim
- Department of Nuclear Medicine, Hanyang University College of Medicine, Hanyang University Medical Center, Seoul, Korea
| | - Yun Young Choi
- Department of Nuclear Medicine, Hanyang University College of Medicine, Hanyang University Medical Center, Seoul, Korea
| | - Chan Woo Kim
- Department of Nuclear Medicine, Hanyang University College of Medicine, Hanyang University Medical Center, Seoul, Korea
| | - Yoon-Kyoung Sung
- Division of Rheumatology, Department of Internal Medicine, Hanyang University College of Medicine and the Hospital for Rheumatic Diseases, Hanyang University Medical Center, Seoul, Korea
| | - Dae-Hyun Yoo
- Division of Rheumatology, Department of Internal Medicine, Hanyang University College of Medicine and the Hospital for Rheumatic Diseases, Hanyang University Medical Center, Seoul, Korea
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Lim SB, Yu CS, Kim CW, Yoon YS, Park IJ, Kim JC. Late anastomotic leakage after low anterior resection in rectal cancer patients: clinical characteristics and predisposing factors. Colorectal Dis 2016; 18:O135-40. [PMID: 26888300 DOI: 10.1111/codi.13300] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/18/2015] [Indexed: 12/12/2022]
Abstract
AIM The purpose was to examine the clinical characteristics and predisposing factors of late anastomotic leakage following low anterior resection for rectal cancer. METHOD We retrospectively evaluated the clinicopathological features of patients who experienced anastomotic leakage after low anterior resection for rectal cancer. Patients were divided into two groups according to the time to leakage: early leakage (within 30 days postoperatively) and late leakage (after 30 days postoperatively). Clinicopathological characteristics were compared between the two groups. RESULTS Anastomotic leakage occurred in 141 patients. Anastomotic leakage was diagnosed at a median of 17 (range 0-886) days postoperatively; 85 (60.3%) and 56 (39.7%) were categorized as the early and late leakage groups, respectively. Radiotherapy (hazard ratio 5.007; 95% CI 2.208-11.354; P < 0.0001) was the only significant independent predisposing factor for late leakage. Diverting stoma did not protect against late leakage. The late leakage group more frequently had the fistula type (46.4% vs. 10.6%; P < 0.001) and less frequently needed laparotomy (55.4% vs. 78.8%; P = 0.001). The rate of long-term stoma over 1 year was greater in the late leakage than the early leakage group (51.8% vs. 29.4%; P = 0.009). CONCLUSION Late anastomotic leakages that develop after 30 days following low anterior resection are not uncommon and may be associated with the use of radiotherapy. Late leakage should be a different entity from early leakage in terms of the type of leakage, methods of management and subsequent sequelae.
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Affiliation(s)
- S-B Lim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - C S Yu
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - C W Kim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - Y S Yoon
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - I J Park
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - J C Kim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
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Kim CW, Park SN, Lee SB, Kim JJ, Lee HW, Kim YK, Yoon SS. Blue Emitters Based on Aryl End-Capped Pyrene Groups for OLEDs. J Nanosci Nanotechnol 2016; 16:2912-2915. [PMID: 27455733 DOI: 10.1166/jnn.2016.11092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have synthesized four pyrene-derived blue emitting materials using Suzuki cross coupling reactions. All OLED devices using these materials as emitting materials showed efficient blue electroluminescence (EL). Particularly, a device using 1,1'-(9,9-dimethyl-9H-fluorene-2,7-diyl)bis-pyrene (1) showed best EL properties with the luminous efficiency of 4.32 cd/A, the power efficiency of 3.98 lm/W and the external quantum efficiency of 2.48% at 500 cd/m2.
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Kim JY, Chae CH, Kim YO, Son JS, Kim JH, Kim CW, Park HO, Lee JH, Kwon SI. Erratum to: The relationship between quality of sleep and night shift rotation interval. Ann Occup Environ Med 2016; 28:6. [PMID: 26816617 PMCID: PMC4727257 DOI: 10.1186/s40557-016-0090-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Jae Youn Kim
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Chang Ho Chae
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Young Ouk Kim
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Jun Seok Son
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Ja Hyun Kim
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Chan Woo Kim
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Hyoung Ouk Park
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Jun Ho Lee
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
| | - Soon Il Kwon
- Department of Occupational & Environmental Medicine, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, 158, Paryong-ro, Changwon-si, 51353 Changwon, Gyeongsangnam-do Korea (Republic)
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Joo JK, Jeong JE, Kim SC, Kim CW, Ko GR, Lee KS. Comparison of mechanical artificial shrinkage methods in mouse blastocyst vitrification. CLIN EXP OBSTET GYN 2016; 43:93-97. [PMID: 27048025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE OF INVESTIGATION This study was designed to determine which mechanical artificial shrinkage (AS) method, conducted by puncture, pipetting, or aspiration, was effective in increasing the re-expansion rate of mouse blastocysts. MATERIALS AND METHODS In each group, 30 mouse blastocysts were used. Before vitrification, the blastocoelic cavity was collapsed by puncture with a micro-needle, pipetting with a micro-glass pipette, and direct aspiration with an ICSI pipette. After thawing, the re-expansion rate of blastocysts was examined for each AS method. Re-expansion rate was checked at three, five, and seven hours after thawing. RESULTS The number of re-expanded mouse blastocysts at five hours after thawing was 12 in the puncture with a micro-needle group, 11 in the pipetting with a micro-glass pipette group, and 24 in the direct aspiration with an ICSI pipette group. The cumulative number of re-expanded mouse blastocysts at seven hours after thawing was 20 in the puncture with a micro-needle group, 20 in the pipetting with a micro-glass pipette group, and 28 in the direct aspiration with an ICSI pipette group. There were statistically significant differences in the cumulative number of re-expanded mouse blastocysts between five and seven hours after thawing (p = 0.001 and 0.021, respectively). CONCLUSIONS Direct aspiration with an ICSI pipette resulted in a higher re-expansion rate than the puncture and pipetting methods. It can be considered that the direct aspiration method is more convenient and simpler than the other two methods.
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Kim JY, Chae CH, Kim YO, Son JS, Kim JH, Kim CW, Park HO, Lee JH, Kwon SI, Kwon SI. The relationship between quality of sleep and night shift rotation interval. Ann Occup Environ Med 2015; 27:31. [PMID: 26688731 PMCID: PMC4683722 DOI: 10.1186/s40557-015-0084-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 12/07/2015] [Indexed: 01/31/2023] Open
Abstract
Background Shift work is closely related with workers' health. In particular, sleep is thought to be affected by shift work. In addition, shift work has been reported to be associated with the type or direction of shift rotation, number of consecutive night shifts, and number of off-duty days. We aimed to analyze the association between the night shift rotation interval and the quality of sleep reported by Korean female shift workers. Methods In total, 2,818 female shift workers from the manufacturing industry who received an employee physical examination at a single university hospital from January to August in 2014 were included. Subjects were classified into three groups (A, B, and C) by their night shift rotation interval. The quality of sleep was measured using the Korean version of the Pittsburgh Sleep Quality Index (PSQI). Descriptive analysis, univariate logistic regression, and multivariate logistic regression were performed. Results With group A as the reference, the odds ratio (OR) for having a seriously low quality of sleep was 1.456 (95% CI 1.171–1.811) and 2.348 (95% CI 1.852–2.977) for groups B and C, respectively. Thus, group C with the shortest night shift rotation interval was most likely to have a low quality of sleep. After adjustment for age, obesity, smoking status, alcohol consumption, exercise, being allowed to sleep during night shifts, work experience, and shift work experience, groups B and C had ORs of 1.419 (95% CI 1.134–1.777) and 2.238 (95% CI 1.737–2.882), respectively, compared to group A. Conclusion Our data suggest that a shorter night shift rotation interval does not provide enough recovery time to adjust the circadian rhythm, resulting in a low quality of sleep. Because shift work is influenced by many different factors, future studies should aim to determine the most optimal shift work model and collect accurate, prospective data.
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Affiliation(s)
- Jae Youn Kim
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Chang Ho Chae
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Young Ouk Kim
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Jun Seok Son
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Ja Hyun Kim
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Chan Woo Kim
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Hyoung Ouk Park
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Jun Ho Lee
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
| | - Soon Il Kwon
- Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan University, 158, Paryong-ro, Changwon-si, 51353 Gyeongsangnam-do Korea (Republic)
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Kwon SI, Son JS, Kim YO, Chae CH, Kim JH, Kim CW, Park HO, Lee JH, Jung JI. Association between serum vitamin D and depressive symptoms among female workers in the manufacturing industry. Ann Occup Environ Med 2015; 27:28. [PMID: 26693028 PMCID: PMC4676810 DOI: 10.1186/s40557-015-0083-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 12/03/2015] [Indexed: 12/23/2022] Open
Abstract
Background Vitamin D has been known to maintain the body’s balance of calcium and phosphorus as well as skeletal health. There has been increasing emphasis on the importance of vitamin D as recent studies have been reporting the specific functions of vitamin D in the cerebral nervous system and the association between the level of serum vitamin D and depressive symptoms. However, there is currently a paucity of research investigating the association between serum vitamin D and depressive symptoms in Korean subjects. Consequently, this study has aimed to determine the level of serum vitamin D and explore the association between serum vitamin D and depressive symptoms in Korean female workers. Method A medical examination, questionnaire, anthropometric measurements, and a blood test were conducted between February 3 and March 7, 2014 in 1054 subjects among female workers in the manufacturing industry who underwent physical examinations in a university hospital. From this data, we identified the level of serum vitamin D and investigated the association between serum vitamin D deficiency and depressive symptoms. Results The average serum vitamin D level of the 1054 subjects was 9.07 ± 3.25 ng/mL, and the number of subjects in the serum vitamin D deficiency group with less than 10 ng/mL was 721 (68.4 %). The odds ratio of the depressive symptom group with a CES-D score of 16 or above being in the deficiency group with a serum vitamin D level less than 10 ng/mL was found to be 1.55 (95 % CI = 1.15–2.07). Conclusion 68.4 % of female workers in the manufacturing industry were in the deficiency group with serum vitamin D levels less than 10 ng/mL. Additionally, we identified an association between serum vitamin D deficiency and depressive symptoms. In the future, if serum vitamin D deficiency is checked regularly in workers, we expect to achieve better outcomes in managing their depressive symptoms.
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Affiliation(s)
- Soon Il Kwon
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Jun Seok Son
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Young Ouk Kim
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Chang Ho Chae
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Ja Hyun Kim
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Chan Woo Kim
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Hyoung Ouk Park
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Jun Ho Lee
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
| | - Jun Ick Jung
- Department of Occupational and Environmental Medicine, Samsung Changwon Medical Center, Sungkyunkwan University School of Medicine, Changwon City, Republic of Korea
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Kim CW, Kim HY. Letter: association between moderate alcohol consumption and non-alcoholic fatty liver disease. Aliment Pharmacol Ther 2015; 42:1330-1. [PMID: 26510544 DOI: 10.1111/apt.13417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- C W Kim
- Division of Hepatology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, Republic of Korea
| | - H Y Kim
- Division of Hepatology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, Republic of Korea.
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Lee KH, Ho Chae C, Ouk Kim Y, Seok Son J, Kim JH, Woo Kim C, Ouk Park H, Ho Lee J, Saeng Jung Y. Anxiety symptoms and occupational stress among young Korean female manufacturing workers. Ann Occup Environ Med 2015; 27:24. [PMID: 26568830 PMCID: PMC4644331 DOI: 10.1186/s40557-015-0075-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 09/21/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The prevalence of anxiety disorders has been increasing in South Korea, with recent studies reporting anxiety disorders as the most common mental disorder among all South Korean females. Anxiety disorders, which are independent risk factors of suicidal ideation and suicide attempts, are significantly correlated with productivity loss, high medical costs, impaired work performance, and frequent worker absence, and thus are potentially serious problems affecting the health of South Korean female workers. In previous studies, anxiety disorders were shown to have a significant correlation with occupational stress. This study seeks to examine the prevalence of anxiety symptoms as well as the relationship between occupational stress and anxiety symptoms among South Korean female manufacturing workers. METHODS A structured self-reported questionnaire was administered to 1,141 female workers at an electrical appliance manufacturing plant. The questionnaire collected data on general characteristics, health behaviors, sleep quality, job characteristics (shift work, shift work schedule, and job tenure), occupational stress, and anxiety symptoms. Sleep quality was measured using the Pittsburgh Sleep Quality Index, occupational stress with the Korean Occupational Stress Scale-Short Form (KOSS-SF), and anxiety symptoms with the Korean version of the Beck Anxiety Inventory. A chi square test was conducted to determine the distribution differences in anxiety symptoms based on general characteristics, health behaviors, job characteristics, and sleep quality. A linear-by-linear association test was used to determine the distribution differences between anxietysymptoms and the levels of occupational stress. Last, logistic regression analysis was used in order to determine the association between occupational stress and anxiety symptoms. RESULTS The prevalence of anxiety symptoms was 15.2 %. In the multivariate logistic regression analysis that adjusted for sleep quality and general characteristics, a significantassociation was found for those with anxiety disorders; the odds ratios (OR) were significantly higher the greater the total KOSS-SF score (moderate-risk group OR=2.85, 95 % CI=1.79-4.56; high-risk group OR=5.34, 95 % CI=3.59-7.96). In addition, excluding insufficient job control, all other KOSS-SF subscales were significantly associated with anxiety symptoms, and a relatively high OR was seen in the high-risk group for job demand (OR=3.19, 95 % CI=2.27-4.49), job insecurity (OR=4.52, 95 % CI=2.86-7.13), and occupational culture (OR=4.52, 95 % CI=2.90-7.04). CONCLUSION There was a significant association between anxiety symptoms and occupational stress stemming from the psychosocial work environment among these South Korean female manufacturing workers. Future longitudinal studies are needed to examine the association between the occupational stress caused by the psychosocial work environment and the incidence of anxiety disorders and anxiety symptoms. Furthermore, intervention programs that aim to address the prevalence of anxiety symptoms and improve the psychosocial work environment, especially for younger female manufacturing workers, are needed.
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Affiliation(s)
- Kang Ho Lee
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Chang Ho Chae
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Young Ouk Kim
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Jun Seok Son
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Ja-Hyun Kim
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Chan Woo Kim
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Hyoung Ouk Park
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Jun Ho Lee
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
| | - Young Saeng Jung
- Department of occupational and environmental medicine, Changwon Samsung Hospital, Sungkyunkwan College of Medicine, Changwon City, Republic of Korea
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Sun Y, Lee HW, Lee SE, Yang HJ, Yoo HK, Hwang KM, Kim CW, Yoon SS, Kim YK. Improved Performance of Red Phosphorescent Organic Light Emitting Diodes Using Partial Mixed Host System. J Nanosci Nanotechnol 2015; 15:8081-8085. [PMID: 26726466 DOI: 10.1166/jnn.2015.11267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Phosphorescent organic light-emitting diodes (PHOLEDs) have shown a heterojunction system that is a bulk heterojunctioned emitting layer (EML). In our work, we have demonstrated an improvement in efficiency with a partial mixed host system in an EML. A mixed host system, which is mixed with a host material and an electron transporting material, was used on the red PHOLEDs. In general, the recombination zone is located at the electron transporting layer (ETL) side in typical PHOLEDs due to excessive accumulation at the interface. However, this study proposed the removal of interfaces through the advantage of a mixed host system and a mixed layer between EML and ETL sides to increase the electron mobility of the experiments. Detailed optical and electrical analysis of these phenomena, were demonstrated.
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Song YG, Byun JH, Hwang SY, Kim CW, Shim SG. Use of vertebral body units to locate the cavoatrial junction for optimum central venous catheter tip positioning. Br J Anaesth 2015; 115:252-7. [PMID: 26170349 DOI: 10.1093/bja/aev218] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Central venous catheter (CVC) placement plays an important role in clinical practice; however, optimal positioning of the CVC tip remains a controversial issue. The objective of this study was to evaluate the use of vertebral body unit (VBUs), to locate the cavoatrial junction (CAJ), for optimal CVC tip placement based on chest radiography (CXR) using the carina as a landmark. METHODS 524 patients who underwent coronary computed tomographic angiography (CTA) and CXR were included. The position of the CAJ was identified using VBUs, and the efficacy of VBUs for locating the CAJ with the carina as a landmark was analysed using multiple regression analysis. A VBU was defined as the distance between two adjacent vertebral bodies, including the inter-vertebral disk space. RESULTS The mean (sd) distance from the carina to the superior CAJ was 54.3 (9.7) mm on CTA; the mean distance in VBUs at the level of the carina was 21.4 (1.7) mm on CTA and 22.6 (2.1) mm on CXR. The mean CAJ position was 2.5 VBUs below the carina on CTA and 2.4 VBUs below on CXR with 95% limits of agreement between -0.6 and +0.3. CONCLUSIONS The position of the CVC tip in relation to the carina can be described using the thoracic spine as an internal ruler, and the position of the CAJ in adults was reliably estimated to be 2.4 VBUs below the carina. CLINICAL TRIAL REGISTRATION KCT0001319.
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Affiliation(s)
- Y G Song
- Department of Radiology, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - J H Byun
- Department of Thoracic and Cardiovascular Surgery, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - S Y Hwang
- Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - C W Kim
- Department of Obstetrics and Gynecology, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - S G Shim
- Department of Internal Medicine, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
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Kheirolomoom A, Kim CW, Seo JW, Kumar S, Son DJ, Gagnon MKJ, Ingham ES, Ferrara KW, Jo H. Multifunctional Nanoparticles Facilitate Molecular Targeting and miRNA Delivery to Inhibit Atherosclerosis in ApoE(-/-) Mice. ACS Nano 2015; 9:8885-97. [PMID: 26308181 PMCID: PMC4581466 DOI: 10.1021/acsnano.5b02611] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 08/26/2015] [Indexed: 05/18/2023]
Abstract
The current study presents an effective and selective multifunctional nanoparticle used to deliver antiatherogenic therapeutics to inflamed pro-atherogenic regions without off-target changes in gene expression or particle-induced toxicities. MicroRNAs (miRNAs) regulate gene expression, playing a critical role in biology and disease including atherosclerosis. While anti-miRNA are emerging as therapeutics, numerous challenges remain due to their potential off-target effects, and therefore the development of carriers for selective delivery to diseased sites is important. Yet, co-optimization of multifunctional nanoparticles with high loading efficiency, a hidden cationic domain to facilitate lysosomal escape and a dense, stable incorporation of targeting moieties is challenging. Here, we create coated, cationic lipoparticles (CCLs), containing anti-miR-712 (∼1400 molecules, >95% loading efficiency) within the core and with a neutral coating, decorated with 5 mol % of peptide (VHPK) to target vascular cell adhesion molecule 1 (VCAM1). Optical imaging validated disease-specific accumulation as anti-miR-712 was efficiently delivered to inflamed mouse aortic endothelial cells in vitro and in vivo. As with the naked anti-miR-712, the delivery of VHPK-CCL-anti-miR-712 effectively downregulated the d-flow induced expression of miR-712 and also rescued the expression of its target genes tissue inhibitor of metalloproteinase 3 (TIMP3) and reversion-inducing-cysteine-rich protein with kazal motifs (RECK) in the endothelium, resulting in inhibition of metalloproteinase activity. Moreover, an 80% lower dose of VHPK-CCL-anti-miR-712 (1 mg/kg dose given twice a week), as compared with naked anti-miR-712, prevented atheroma formation in a mouse model of atherosclerosis. While delivery of naked anti-miR-712 alters expression in multiple organs, miR-712 expression in nontargeted organs was unchanged following VHPK-CCL-anti-miR-712 delivery.
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Affiliation(s)
- Azadeh Kheirolomoom
- Department of Biomedical Engineering, University of California, Davis, California 95616, United States
| | - Chan Woo Kim
- Wallace H. Coulter Department of Biomedical Engineering and Division of Cardiology, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Jai Woong Seo
- Department of Biomedical Engineering, University of California, Davis, California 95616, United States
| | - Sandeep Kumar
- Wallace H. Coulter Department of Biomedical Engineering and Division of Cardiology, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Dong Ju Son
- Wallace H. Coulter Department of Biomedical Engineering and Division of Cardiology, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - M. Karen J. Gagnon
- Department of Biomedical Engineering, University of California, Davis, California 95616, United States
| | - Elizabeth S. Ingham
- Department of Biomedical Engineering, University of California, Davis, California 95616, United States
| | - Katherine W. Ferrara
- Department of Biomedical Engineering, University of California, Davis, California 95616, United States
- Address correspondence to ,
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering and Division of Cardiology, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- Address correspondence to ,
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Yoon YS, Kim J, Hong SM, Lee JL, Kim CW, Park IJ, Lim SB, Yu CS, Kim JC. Clinical implications of mucinous components correlated with microsatellite instability in patients with colorectal cancer. Colorectal Dis 2015; 17:O161-7. [PMID: 26095997 DOI: 10.1111/codi.13027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 05/11/2015] [Indexed: 12/13/2022]
Abstract
AIM Colorectal cancer (CRC) with microsatellite instability (MSI) is characterized by frequent poor differentiation or mucinous histology. The purpose of this study was to evaluate the association of MSI with clinicopathological features and the oncological outcome in patients with a mucinous component. METHOD CRC tissue samples were analysed for histology and MSI. Patients were grouped according to the mucinous content of the tumour, as follows: > 50%, mucinous adenocarcinoma (MA); ≤ 50%, adenocarcinoma with mucinous component (AMC); none, nonmucinous adenocarcinoma (NMA). Clinicopathological parameters and survival were compared between patient groups. RESULTS Of 2025 patients, 84 (4%) had MA and 124 (6%) had AMC. In addition, 202 (10%) had MSI. Patients with MA and AMC tended to have a younger age of onset, right-colon predilection, large-sized tumour and high frequency of MSI compared with those with NMA (P < 0.001). MA and AMC patients with MSI showed a trend towards right-colon predilection and infrequent lymph-node metastasis compared with those with microsatellite stability (MSS; P = 0.005-0.03). There were no survival differences between the three groups, but patients with MSI-MA demonstrated lower 4-year recurrence and better overall survival rates than those with MSS-MA (P = 0.018 and P = 0.046, respectively). CONCLUSION Clinicopathological features of AMC and MA were similar and closely associated with MSI status. Although the prognoses of AMC and MA were no different from that of NMA, survival of patients with an MSI-MA tumour was significantly better than for those with MSS-MA tumours.
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Affiliation(s)
- Y S Yoon
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J Kim
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - S-M Hong
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J L Lee
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - C W Kim
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - I J Park
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - S-B Lim
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - C S Yu
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J C Kim
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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80
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Wu C, Huang RT, Kuo CH, Kumar S, Kim CW, Lin YC, Chen YJ, Birukova A, Birukov KG, Dulin NO, Civelek M, Lusis AJ, Loyer X, Tedgui A, Dai G, Jo H, Fang Y. Mechanosensitive PPAP2B Regulates Endothelial Responses to Atherorelevant Hemodynamic Forces. Circ Res 2015; 117:e41-e53. [PMID: 26034042 DOI: 10.1161/circresaha.117.306457] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/01/2015] [Indexed: 02/07/2023]
Abstract
RATIONALE PhosPhatidic Acid Phosphatase type 2B (PPAP2B), an integral membrane protein known as lipid phosphate phosphatase (LPP3) that inactivates lysophosphatidic acid, was implicated in coronary artery disease (CAD) by genome-wide association studies. However, it is unclear whether genome-wide association studies-identified coronary artery disease genes, including PPAP2B, participate in mechanotransduction mechanisms by which vascular endothelia respond to local atherorelevant hemodynamics that contribute to the regional nature of atherosclerosis. OBJECTIVE To establish the critical role of PPAP2B in endothelial responses to hemodynamics. METHODS AND RESULTS Reduced PPAP2B was detected in vivo in mouse and swine aortic arch (AA) endothelia exposed to chronic disturbed flow, and in mouse carotid artery endothelia subjected to surgically induced acute disturbed flow. In humans, PPAP2B was reduced in the downstream part of carotid plaques where low shear stress prevails. In culture, reduced PPAP2B was measured in human aortic endothelial cells under atherosusceptible waveform mimicking flow in human carotid sinus. Flow-sensitive microRNA-92a and transcription factor KLF2 were identified as upstream inhibitor and activator of endothelial PPAP2B, respectively. PPAP2B suppression abrogated atheroprotection of unidirectional flow; inhibition of lysophosphatidic acid receptor 1 restored the flow-dependent, anti-inflammatory phenotype in PPAP2B-deficient cells. PPAP2B inhibition resulted in myosin light-chain phosphorylation and intercellular gaps, which were abolished by lysophosphatidic acid receptor 1/2 inhibition. Expression quantitative trait locus mapping demonstrated PPAP2B coronary artery disease risk allele is not linked to PPAP2B expression in various human tissues but significantly associated with reduced PPAP2B in human aortic endothelial cells. CONCLUSIONS Atherorelevant flows dynamically modulate endothelial PPAP2B expression through miR-92a and KLF2. Mechanosensitive PPAP2B plays a critical role in promoting anti-inflammatory phenotype and maintaining vascular integrity of endothelial monolayer under atheroprotective flow.
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Affiliation(s)
- Congqing Wu
- Department of Medicine, University of Chicago, Los Angeles
| | - Ru-Ting Huang
- Department of Medicine, University of Chicago, Los Angeles
| | | | - Sandeep Kumar
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Los Angeles
| | - Chan Woo Kim
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Los Angeles
| | - Yen-Chen Lin
- Department of Medicine, University of Chicago, Los Angeles
| | - Yen-Ju Chen
- Department of Medicine, University of Chicago, Los Angeles
| | - Anna Birukova
- Department of Medicine, University of Chicago, Los Angeles
| | | | | | - Mete Civelek
- Department of Medicine, University of California, Los Angeles
| | - Aldons J Lusis
- Department of Medicine, University of California, Los Angeles
| | - Xavier Loyer
- Paris-Cardiovascular Research Center, University Paris Descartes
| | - Alain Tedgui
- Paris-Cardiovascular Research Center, University Paris Descartes
| | - Guohao Dai
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute
| | - Hanjoong Jo
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Los Angeles
| | - Yun Fang
- Department of Medicine, University of Chicago, Los Angeles
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81
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Li K, Sato H, Kim CW, Nakamura Y, Zhao GX, Funamoto D, Nobori T, Kishimura A, Mori T, Katayama Y. Tumor accumulation of protein kinase-responsive gene carrier/DNA polyplex stabilized by alkanethiol for intravenous injection. J Biomater Sci Polym Ed 2015; 26:657-68. [PMID: 26011738 DOI: 10.1080/09205063.2015.1054922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We synthesized polymeric gene carriers consisting of poly-L-lysine (PLL) main chain modified both with substrate peptide for protein kinase Cα (PKCα) and alkanethiol (pentadecanethiol). Due to the grafted substrate peptide, the polyplex prepared from these carriers is expected to show gene expression triggered by the phosphorylation of the peptide by intracellular PKCα. The modified alkanethiol on the main chain stabilized the polyplex both via disulfide crosslinking and hydrophobic interaction. The polyplex found to show gene expression in vitro when the alkanethiol content in the main chain was enough low (4-mol%-modification of PLL's ε-amine group) to minimize cytotoxic effect. Even though the content of alkanethiol is low, the polyplex had significant stability in a model serum solution and showed longer blood circulation in vivo. The polyplex clearly accumulated in tumor after intravenous injection.
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Affiliation(s)
- Kai Li
- a Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku, Fukuoka , 819-0395 , Japan
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82
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Wu C, Kuo CH, Kim CW, Huang RT, Birukova A, Birukov KG, Dulin NO, Civelek M, Lusis AJ, Dai G, Jo H, Fang Y. Abstract 351: Mechano-sensitive Ppap2b Regulates Endothelial Responses to Athero-relevant Hemodynamic Forces. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
PhosPhatidic-Acid-Phosphatase-type-2B (PPAP2B), an integral membrane protein that inactivates lysophosphatidic acid, was implicated in coronary artery disease (CAD) by genome-wide association studies (GWAS). However, it is unclear whether GWAS-identified CAD genes including PPAP2B participate in mechanotransduction mechanisms by which vascular endothelia respond to local athero-relevant blood flows that contribute to the regional nature of atherosclerosis.
Approach and Results:
Reduced endothelial PPAP2B was detected in vivo in swine aortic arch exposed to chronic disturbed flow and in mouse carotid artery subjected to surgically-induced acute disturbed flow. In culture, elevated PPAP2B was measured in human aortic endothelial cells (HAEC) under athero-protective flow mimicking hemodynamics of human distal carotid artery when compared with athero-susceptible waveform representing flow in carotid sinus. Disturbed flow-induced miR-92a was identified as a direct posttranscriptional inhibitor of mechano-sensitive PPAP2B.
PPAP2B suppression abrogated athero-protection of unidirectional flow, shown by elevation of inflammatory genes. Inhibition of lysophosphatidic acid receptor 1 restored the flow-dependent, anti-inflammatory phenotype in PPAP2B-deficient cells. Moreover, PPAP2B inhibition resulted in myosin-light-chain phosphorylation and intercellular gaps, which were abolished by inhibition of lysophosphatidic acid receptors 1 and 2. Expression-quantitative-trait-locus-mapping demonstrated PPAP2B CAD risk allele is not linked to PPAP2B expression in various human tissues but significantly associated with reduced PPAP2B in HAEC.
Conclusions:
Athero-relevant flows dynamically modulate endothelial PPAP2B expression through miR-92a regulation. Mechano-sensitive PPAP2B plays an indispensable role in mediating cell alignment, promoting anti-inflammatory phenotype and maintaining vascular integrity of endothelial monolayer under athero-protective flow.
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Affiliation(s)
| | | | | | | | | | | | | | - Mete Civelek
- Medicine, Univ of California, Los Angeles, Los Angeles, CA
| | - Aldons J Lusis
- Medicine, Univ of California, Los Angeles, Los Angeles, CA
| | - Guohao Dai
- Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
| | | | - Yun Fang
- Medicine, Univ of Chicago, Chicago, IL
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83
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Ni CW, Kim CW, Jang I, Jo H, Lawson ND. Abstract 234: Ramp2 Is a Novel Flow-sensitive Gene Both In vitro and in vivo. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ramp2 is a member of ramps (receptor activity modified proteins) family, which comprises a single transmembrane domain and involves in protein transport. Specifically, ramp2 is required to transport calcitonin-receptor-like receptor (CRLR) to the plasma membrane, which can function as an adrenomedullin receptor. In addition, ramp2 significantly expresses in endothelial cells but the function of ramp2 in endothelium in response to blood flow has not been reported yet. Here, we first report the expression of ramp2 is significantly altered by different flow conditions. In cultured HUVECs, ramp2 mRNA level decreases over 90% (p<0.01) in oscillatory shear (OS) flow compared to laminar shear (LS). Similarly, ramp2 is down-regulated (reduced 79%, p<0.01) under low and oscillatory shear condition in vivo when performing partial carotid ligation in mouse model. Moreover, a very similar result was obtained from deep sequencing data acquired in zebrafish. Zebrafish embryos were left untreated or injected with tnnt2 morpholinos at one-cell stage that in turn prevents heart beating and stops blood flow. We developed a method to acquire endothelial-enriched mRNAs from these embryos at 2 days post fertilization (dpf), and then samples were subjected to deep sequencing analysis. The data showed that ramp2 decreases 60% (p<0.01) at no flow condition, which is consistent with the observation in mouse and cultured human cells. Together, these data suggests that ramp2 is a novel flow-sensitive gene despite the detail function and significance is still to be determined.
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Affiliation(s)
- Chih-Wen Ni
- Biomedical Engineering, Khalifa Univ, Abu Dhabi, United Arab Emirates
| | | | - Inhwan Jang
- Biomedical Engineering, Emory Univ, Atlanta, GA
| | - Hanjoong Jo
- Biomedical Engineering, Emory Univ, Atlanta, GA
| | - Nathan D Lawson
- Program of Gene Function and Expression, UMass Med Sch, Worcester, MA
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84
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Funamoto D, Asai D, Sato K, Yamaguchi Y, Kim CW, Sato H, Nakhaei E, Matsumoto S, Yoshikawa T, Sasaki K, Yamamoto T, Kishimura A, Mori T, Katayama Y. Antibody Internalization into Living Cells via Crosslinker-mediated Endocytosis. CHEM LETT 2015. [DOI: 10.1246/cl.141157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daiki Funamoto
- Graduate School of System Life Sciences, Kyushu University
| | - Daisuke Asai
- Department of Microbiology, St. Marianna University School of Medicine
| | - Kazuki Sato
- Department of Environmental Science, Fukuoka Women’s University
| | - Yoko Yamaguchi
- Department of Environmental Science, Fukuoka Women’s University
| | - Chan Woo Kim
- Graduate School of System Life Sciences, Kyushu University
| | - Hikari Sato
- Graduate School of System Life Sciences, Kyushu University
| | - Elnaz Nakhaei
- Graduate School of System Life Sciences, Kyushu University
| | | | | | - Koichi Sasaki
- Graduate School of System Life Sciences, Kyushu University
| | | | | | - Takeshi Mori
- Graduate School of System Life Sciences, Kyushu University
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85
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Funamoto D, Asai D, Kim CW, Nakamura Y, Lee EK, Nobori T, Niidome T, Mori T, Katayama Y. Tandemly Repeated Peptide for Cancer-specific Gene Carrier Prepared by Native Chemical Ligation. CHEM LETT 2015. [DOI: 10.1246/cl.141121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daiki Funamoto
- Graduate School of System Life Sciences, Kyushu University
| | - Daisuke Asai
- Department of Microbiology, St. Marianna University School of Medicine
| | - Chan Woo Kim
- Graduate School of System Life Sciences, Kyushu University
| | - Yuta Nakamura
- Graduate School of System Life Sciences, Kyushu University
| | - Eun Kyung Lee
- Graduate School of System Life Sciences, Kyushu University
| | | | - Takuro Niidome
- Graduate School of System Life Sciences, Kyushu University
| | - Takeshi Mori
- Graduate School of System Life Sciences, Kyushu University
- Center for Future Chemistry, Kyushu University
| | - Yoshiki Katayama
- Graduate School of System Life Sciences, Kyushu University
- Center for Future Chemistry, Kyushu University
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86
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Lee EK, Kim CW, Kawanami H, Kishimura A, Niidome T, Mori T, Katayama Y. Utilization of a PNA-peptide conjugate to induce a cancer protease-responsive RNAi effect. RSC Adv 2015. [DOI: 10.1039/c5ra17737e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We designed a new siRNA system which turns on RNAi responding to a cancer cell-specific protease by using a peptide nucleic acid (PNA)-peptide conjugate.
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Affiliation(s)
- Eun Kyung Lee
- Graduate School of Systems Life Sciences
- Kyushu University
- Fukuoka
- Japan
| | - Chan Woo Kim
- Department of Applied Chemistry
- Faculty of Engineering
- Kyushu University
- Fukuoka
- Japan
| | - Hiroyuki Kawanami
- Graduate School of Systems Life Sciences
- Kyushu University
- Fukuoka
- Japan
| | - Akihiro Kishimura
- Graduate School of Systems Life Sciences
- Kyushu University
- Fukuoka
- Japan
- Department of Applied Chemistry
| | - Takuro Niidome
- Department of Applied Chemistry
- Faculty of Engineering
- Kyushu University
- Fukuoka
- Japan
| | - Takeshi Mori
- Graduate School of Systems Life Sciences
- Kyushu University
- Fukuoka
- Japan
- Department of Applied Chemistry
| | - Yoshiki Katayama
- Graduate School of Systems Life Sciences
- Kyushu University
- Fukuoka
- Japan
- Department of Applied Chemistry
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87
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Matsuda M, Hatanaka W, Takeo M, Kim CW, Niidome T, Yamamoto T, Kishimura A, Mori T, Katayama Y. Short peptide motifs for long-lasting anchoring to the cell surface. Bioconjug Chem 2014; 25:2134-43. [PMID: 25350362 DOI: 10.1021/bc500465j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A rational design strategy has been developed for the construction of stable peptide-based anchors for the efficient modification of cell surfaces. Six types of peptide composed of five residues with divalent hydrophobic groups have been designed using this new strategy. Among them, a peptide with a sequence of NBD-Lys-Lys(X)-Lys-Lys-Lys(X)-NH2 (NBD: fluorophore, Lys(X): N-ε-palmitoyl-l-lysine) was found to show the highest modification efficacy and longevity in culture medium. The good performance of this peptide was attributed to (1) its high aqueous solubility, which allowed it to partition from the medium to the cell surface, and (2) the high binding affinity of the saturated palmitoyl groups to the cell membrane. We found that the distribution of the peptide was affected by recycling endosome, which enabled the representation of the peptide following its endocytotic disappearance from the cell membrane. Biotin was also presented on the cell surface using this peptide-based anchor to examine its recognition by streptavidin. The efficacy of the recognition process increased as the length of the oligoethylene glycol spacer increased, indicating that it was necessary for the biotin tag to move away from the membrane glycoproteins on the cell surface to facilitate its efficient recognition by streptavidin.
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Affiliation(s)
- Masayoshi Matsuda
- Graduate School of Systems Life Science, ‡Department of Applied Chemistry, §Center for Future Chemistry, and ∥Center for Molecular Systems, Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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88
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Go YM, Kim CW, Walker DI, Kang DW, Kumar S, Orr M, Uppal K, Quyyumi AA, Jo H, Jones DP. Disturbed flow induces systemic changes in metabolites in mouse plasma: a metabolomics study using ApoE⁻/⁻ mice with partial carotid ligation. Am J Physiol Regul Integr Comp Physiol 2014; 308:R62-72. [PMID: 25377480 DOI: 10.1152/ajpregu.00278.2014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Disturbed blood flow (d-flow) occurring in branched and curved arteries promotes endothelial dysfunction and atherosclerosis, in part, by altering gene expression and epigenomic profiles in endothelial cells. While a systemic metabolic change is known to play a role in atherosclerosis, it is unclear whether it can be regulated by local d-flow. Here, we tested this hypothesis by carrying out a metabolomics study using blood plasma samples obtained from ApoE(-/-) mice that underwent a partial carotid ligation surgery to induce d-flow. Mice receiving sham ligation were used as a control. To study early metabolic changes, samples collected from 1 wk after partial ligation when endothelial dysfunction occurs, but before atheroma develops, were analyzed by high-resolution mass spectrometry. A metabolome-wide association study showed that 128 metabolites were significantly altered in the ligated mice compared with the sham group. Of these, sphingomyelin (SM; m/z 703.5747), a common mammalian cell membrane sphingolipid, was most significantly increased in the ligated mice. Of the 128 discriminatory metabolites, 18 and 41 were positively and negatively correlated with SM, respectively. The amino acids methionine and phenylalanine were increased by d-flow, while phosphatidylcholine and phosphatidylethanolamine were decreased by d-flow, and these metabolites were correlated with SM. Other significantly affected metabolites included dietary and environmental agents. Pathway analysis showed that the metabolic changes of d-flow impacted broad functional networks. These results suggest that signaling from d-flow occurring in focal regions induces systemic metabolic changes associated with atherosclerosis.
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Affiliation(s)
- Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Chan Woo Kim
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Douglas I Walker
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia; Department of Civil and Environmental Engineering, Tufts University, Medford, Massachusetts; and
| | - Dong Won Kang
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Sandeep Kumar
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Michael Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Karan Uppal
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Arshed A Quyyumi
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia
| | - Hanjoong Jo
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia;
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89
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Toita R, Kang JH, Kim CW, Shiosaki S, Mori T, Niidome T, Katayama Y. Effect of peptide content on the regulation of transgene expression by protein kinase Cα-responsive linear polyethylenimine-peptide conjugates. Colloids Surf B Biointerfaces 2014; 123:123-9. [PMID: 25270730 DOI: 10.1016/j.colsurfb.2014.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/27/2014] [Accepted: 09/01/2014] [Indexed: 01/04/2023]
Abstract
We examined a series of linear polyethylenimine (LPEI)-based nanocarriers that activate transgene expression in response to cancer-specific protein kinase Cα (PKCα). Eight types of LPEI-peptide conjugate differing in peptide content and number were synthesized using click chemistry. The conjugates could form polyplexes with pDNA through electrostatic interaction, but the degree of pDNA condensation, sizes, and surface charges of the resulting polyplexes depended on the pendant-peptide content and number. None of the polyplexes showed significant cytotoxicity toward human hepatoma cells (HepG2). Furthermore, pendant peptide content and number markedly affected transgene activation in response to PKCα. To achieve an all-or-none response to PKCα, we determined the optimum peptide content and number in LPEI-peptide conjugates as ≈6 mol% and ≈40 peptides/conjugate.
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Affiliation(s)
- Riki Toita
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Jeong-Hun Kang
- Division of Biopharmaceutics and Pharmacokinetics, Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
| | - Chan Woo Kim
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shujiro Shiosaki
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takeshi Mori
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takuro Niidome
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yoshiki Katayama
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; International Research Center for Molecular Systems, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Center for Advanced Medical Innovation, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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90
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Kumar S, Kim CW, Son DJ, Ni CW, Jo H. Flow-dependent regulation of genome-wide mRNA and microRNA expression in endothelial cells in vivo. Sci Data 2014; 1:140039. [PMID: 25977794 PMCID: PMC4411008 DOI: 10.1038/sdata.2014.39] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 09/15/2014] [Indexed: 12/17/2022] Open
Abstract
Atherosclerosis preferentially occurs in arterial regions exposed to disturbed blood flow (d-flow), in part, due to alterations in gene expression in the endothelium. While numerous in vitro studies have shown how anti-atherogenic flow and pro-atherogenic flow differently regulate gene expression of cultured endothelial cells, similar in vivo studies have been scarce. Recently, we developed a mouse model of atherosclerosis that rapidly develops robust atherosclerosis by partially ligating the left carotid artery (LCA) branches, while using the contralateral right carotid (RCA) as control. We also developed a novel method to collect endothelial-enriched RNAs from the carotids of these animals, which enabled us to perform genome-wide expression analyses of mRNAs and miRNAs in the arterial endothelium exposed to either d-flow or s-flow. These microarray results were used to identify novel mechanosensitive genes such as DNA methyltransferase-1 and miR-712 that play key roles in atherosclerosis. Here, we report these endothelial mRNA and miRNA expression profiles with in-depth information on experimental procedures along with an example of usage of these data.
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Affiliation(s)
- Sandeep Kumar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 1760 Haygood Drive, HSRB E170 , Atlanta, Georgia 30322, USA
| | - Chan Woo Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 1760 Haygood Drive, HSRB E170 , Atlanta, Georgia 30322, USA
| | - Dong Ju Son
- School of Applied Biosciences, Kyungpook National University , Daegu 702-701, South Korea
| | - Chih Wen Ni
- Department of Biomedical Engineering, Khalifa University of Science, Technology and Research , Abu Dhabi, UAE
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 1760 Haygood Drive, HSRB E170 , Atlanta, Georgia 30322, USA ; Division of Cardiology, Emory University , Atlanta, Georgia 30322, USA
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91
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Sato H, Nakamura Y, Nakhaei E, Funamoto D, Kim CW, Yamamoto T, Kishimura A, Mori T, Katayama Y. A Liposome Reversibly Coated with Serum Albumin. CHEM LETT 2014. [DOI: 10.1246/cl.140432] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hikari Sato
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
| | - Yuta Nakamura
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
| | - Elnaz Nakhaei
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
| | - Daiki Funamoto
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
| | - Chan Woo Kim
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
| | | | - Akihiro Kishimura
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
- Center for Future Chemistry, Kyushu University
| | - Takeshi Mori
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
- Center for Future Chemistry, Kyushu University
| | - Yoshiki Katayama
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University
- Center for Future Chemistry, Kyushu University
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92
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Kumar S, Kim CW, Simmons RD, Jo H. Role of flow-sensitive microRNAs in endothelial dysfunction and atherosclerosis: mechanosensitive athero-miRs. Arterioscler Thromb Vasc Biol 2014; 34:2206-16. [PMID: 25012134 DOI: 10.1161/atvbaha.114.303425] [Citation(s) in RCA: 198] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Atherosclerosis preferentially occurs in arterial regions exposed to disturbed flow, in part, due to alterations in gene expression. MicroRNAs (miRNAs) are small, noncoding genes that post-transcriptionally regulate gene expression by targeting messenger RNA transcripts. Emerging evidence indicates that alteration of flow conditions regulate expression of miRNAs in endothelial cells both in vitro and in vivo. These flow-sensitive miRNAs, known as mechano-miRs, regulate endothelial gene expression and can regulate endothelial dysfunction and atherosclerosis. MiRNAs such as, miR-10a, miR-19a, miR-23b, miR-17-92, miR-21, miR-663, miR-92a, miR-143/145, miR-101, miR-126, miR-712, miR-205, and miR-155, have been identified as mechano-miRs. Many of these miRNAs were initially identified as flow sensitive in vitro and were later found to play a critical role in endothelial function and atherosclerosis in vivo through either gain-of-function or loss-of-function approaches. The key signaling pathways that are targeted by these mechano-miRs include the endothelial cell cycle, inflammation, apoptosis, and nitric oxide signaling. Furthermore, we have recently shown that the miR-712/205 family, which is upregulated by disturbed flow, contributes to endothelial inflammation and vascular hyperpermeability by targeting tissue inhibitor of metalloproteinase-3, which regulates metalloproteinases and a disintegrin and metalloproteinases. The mechano-miRs that are implicated in atherosclerosis are termed as mechanosensitive athero-miRs and are potential therapeutic targets to prevent or treat atherosclerosis. This review summarizes the current knowledge of mechanosensitive athero-miRs and their role in vascular biology and atherosclerosis.
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Affiliation(s)
- Sandeep Kumar
- From the Wallace H. Coulter Department of Biomedical Engineering (S.K., C.W.K., R.D.S., H.J.) and Division of Cardiology (H.J.), Georgia Institute of Technology and Emory University, Atlanta, GA
| | - Chan Woo Kim
- From the Wallace H. Coulter Department of Biomedical Engineering (S.K., C.W.K., R.D.S., H.J.) and Division of Cardiology (H.J.), Georgia Institute of Technology and Emory University, Atlanta, GA
| | - Rachel D Simmons
- From the Wallace H. Coulter Department of Biomedical Engineering (S.K., C.W.K., R.D.S., H.J.) and Division of Cardiology (H.J.), Georgia Institute of Technology and Emory University, Atlanta, GA
| | - Hanjoong Jo
- From the Wallace H. Coulter Department of Biomedical Engineering (S.K., C.W.K., R.D.S., H.J.) and Division of Cardiology (H.J.), Georgia Institute of Technology and Emory University, Atlanta, GA.
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93
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Dunn J, Qiu H, Kim S, Jjingo D, Hoffman R, Kim CW, Jang I, Son DJ, Kim D, Pan C, Fan Y, Jordan IK, Jo H. Flow-dependent epigenetic DNA methylation regulates endothelial gene expression and atherosclerosis. J Clin Invest 2014; 124:3187-99. [PMID: 24865430 PMCID: PMC4071393 DOI: 10.1172/jci74792] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 03/28/2014] [Indexed: 12/17/2022] Open
Abstract
In atherosclerosis, plaques preferentially develop in arterial regions of disturbed blood flow (d-flow), which alters endothelial gene expression and function. Here, we determined that d-flow regulates genome-wide DNA methylation patterns in a DNA methyltransferase-dependent (DNMT-dependent) manner. Induction of d-flow by partial carotid ligation surgery in a murine model induced DNMT1 in arterial endothelium. In cultured endothelial cells, DNMT1 was enhanced by oscillatory shear stress (OS), and reduction of DNMT with either the inhibitor 5-aza-2'-deoxycytidine (5Aza) or siRNA markedly reduced OS-induced endothelial inflammation. Moreover, administration of 5Aza reduced lesion formation in 2 mouse models of atherosclerosis. Using both reduced representation bisulfite sequencing (RRBS) and microarray, we determined that d-flow in the carotid artery resulted in hypermethylation within the promoters of 11 mechanosensitive genes and that 5Aza treatment restored normal methylation patterns. Of the identified genes, HoxA5 and Klf3 encode transcription factors that contain cAMP response elements, suggesting that the methylation status of these loci could serve as a mechanosensitive master switch in gene expression. Together, our results demonstrate that d-flow controls epigenomic DNA methylation patterns in a DNMT-dependent manner, which in turn alters endothelial gene expression and induces atherosclerosis.
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MESH Headings
- Animals
- Apolipoproteins E/deficiency
- Apolipoproteins E/genetics
- Atherosclerosis/genetics
- Atherosclerosis/metabolism
- Atherosclerosis/physiopathology
- Azacitidine/analogs & derivatives
- Azacitidine/pharmacology
- DNA (Cytosine-5-)-Methyltransferase 1
- DNA (Cytosine-5-)-Methyltransferases/antagonists & inhibitors
- DNA (Cytosine-5-)-Methyltransferases/genetics
- DNA (Cytosine-5-)-Methyltransferases/metabolism
- DNA Methylation
- Decitabine
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Epigenesis, Genetic
- Gene Expression Regulation
- Homeodomain Proteins/genetics
- Human Umbilical Vein Endothelial Cells
- Humans
- Kruppel-Like Transcription Factors/genetics
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Phosphoproteins/genetics
- Plaque, Atherosclerotic/etiology
- Plaque, Atherosclerotic/genetics
- Plaque, Atherosclerotic/physiopathology
- Promoter Regions, Genetic
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Regional Blood Flow
- Stress, Mechanical
- Transcription Factors
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Affiliation(s)
- Jessilyn Dunn
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Haiwei Qiu
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Soyeon Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Daudi Jjingo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Ryan Hoffman
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Chan Woo Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Inhwan Jang
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Dong Ju Son
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Daniel Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Chenyi Pan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Yuhong Fan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - I. King Jordan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, School of Biology, Georgia Institute of Technology, and Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia, USA
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94
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Kim CW, Kumar S, Son DJ, Jang IH, Griendling KK, Jo H. Prevention of abdominal aortic aneurysm by anti-microRNA-712 or anti-microRNA-205 in angiotensin II-infused mice. Arterioscler Thromb Vasc Biol 2014; 34:1412-21. [PMID: 24812324 DOI: 10.1161/atvbaha.113.303134] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Abdominal aortic aneurysm (AAA) is characterized as a progressive dilation and degradation of the aortic wall, associated with activation of matrix metalloproteinases (MMPs) and inflammation. Emerging evidence indicates a role for microRNAs (miRNAs) in AAA pathogenesis, but it is unclear whether abdominal aortic endothelial miRNAs play a role in the disease process. We aimed to identify miRNAs in the abdominal aortic endothelium that play a critical role in AAA development. APPROACH AND RESULTS The mouse model of AAA induced by angiotensin II infusion was used in this study. Through a miRNA array and validation study, we initially identified the murine-specific miR-712 and subsequently its human/murine homolog miR-205 as angiotensin II-induced miRNAs in the abdominal aortic endothelium in vivo and in vitro. Mechanistically, miR-712 stimulated MMP activity in the aortic wall by directly targeting 2 MMP inhibitors: tissue inhibitor of metalloproteinase 3 (TIMP3) and reversion-inducing cysteine-rich protein with kazal motifs (RECK). Silencing of miR-712 and miR-205 by using anti-miR-712 and anti-miR-205, respectively, significantly decreased the aortic MMP activity and inflammation, preventing AAA development in angiotensin II-infused ApoE(-/-) mice. Further, upregulation of 4 angiotensin II-sensitive miRNAs, miR-205, -21, -133b, and -378, identified in this murine study were confirmed in human AAA samples compared with nondiseased control. CONCLUSIONS Our results demonstrate that angiotensin II-sensitive miR-712 and its human homolog miR-205 downregulate TIMP3 and RECK, which in turn stimulate aortic MMP activity and inflammation, leading to AAA development. Targeting these miRNAs may be a novel therapeutic strategy to prevent AAA.
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Affiliation(s)
- Chan Woo Kim
- From the Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., S.K., D.J.S., I.-H.J., H.J.); and Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA (C.W.K., S.K., D.J.S., I.-H.J., K.K.G., H.J.)
| | - Sandeep Kumar
- From the Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., S.K., D.J.S., I.-H.J., H.J.); and Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA (C.W.K., S.K., D.J.S., I.-H.J., K.K.G., H.J.)
| | - Dong Ju Son
- From the Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., S.K., D.J.S., I.-H.J., H.J.); and Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA (C.W.K., S.K., D.J.S., I.-H.J., K.K.G., H.J.)
| | - In-Hwan Jang
- From the Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., S.K., D.J.S., I.-H.J., H.J.); and Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA (C.W.K., S.K., D.J.S., I.-H.J., K.K.G., H.J.)
| | - Kathy K Griendling
- From the Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., S.K., D.J.S., I.-H.J., H.J.); and Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA (C.W.K., S.K., D.J.S., I.-H.J., K.K.G., H.J.)
| | - Hanjoong Jo
- From the Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta (C.W.K., S.K., D.J.S., I.-H.J., H.J.); and Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA (C.W.K., S.K., D.J.S., I.-H.J., K.K.G., H.J.).
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95
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Nobori T, Shiosaki S, Mori T, Toita R, Kim CW, Nakamura Y, Kishimura A, Niidome T, Katayama Y. Fluorescent Polyion Complex Nanoparticle That Incorporates an Internal Standard for Quantitative Analysis of Protein Kinase Activity. Bioconjug Chem 2014; 25:869-72. [DOI: 10.1021/bc500142j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Takuro Niidome
- Graduate
School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-Ku, Kumamoto 860-8555, Japan
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96
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Zhao GX, Tanaka H, Kim CW, Li K, Funamoto D, Nobori T, Nakamura Y, Niidome T, Kishimura A, Mori T, Katayama Y. Histidinylated poly-L-lysine-based vectors for cancer-specific gene expression via enhancing the endosomal escape. J Biomater Sci Polym Ed 2014; 25:519-34. [PMID: 24460548 DOI: 10.1080/09205063.2013.879562] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, we synthesized a series of poly-L-lysine (PLL)-based polymers for gene delivery, by modifying the PLL with both cationic peptide and histidine. The peptide moieties serve as cationic centers for polyplex formation, and also as substrates for protein kinase Cα (PKCα), which is specifically activated in many types of cancer cells, to achieve cancer-specific gene expression. The histidine groups serve as buffering moieties to increase the ability of the plasmid DNA (pDNA)-polymer complex (polyplex) to escape the endosome and thus to promote expression of the pDNA in the transfected cells. The facile synthesis of the polymers proceeded by modifying the PLL with side-group-protected peptide and protected histidine, followed by deprotection of the functional groups. The synthesized polymers showed significant buffering capacity over the neutral to acidic pH range and showed less cytotoxicity in vitro compared with histidine-unmodified polymers. The polyplexes successfully showed PKCα-responsive gene expression immediately after their introduction into cancer cells and the gene expression continued for at least 24 h. These PLL-based carriers thus show promise for cancer-targeted gene therapy.
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Affiliation(s)
- Guo Xi Zhao
- a Graduate School of Systems Life Sciences , Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395 , Japan
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97
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Shiosaki S, Nobori T, Mori T, Toita R, Nakamura Y, Kim CW, Yamamoto T, Niidome T, Katayama Y. A protein kinase assay based on FRET between quantum dots and fluorescently-labeled peptides. Chem Commun (Camb) 2013; 49:5592-4. [PMID: 23677259 DOI: 10.1039/c3cc41680a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A novel protein kinase assay was developed, based on FRET between QDs and fluorescently-labeled substrate peptides. The negatively charged QDs recognize the change in net charge of the peptide upon phosphorylation. Despite its simple mechanism, this assay is sensitive and robust enough to be applied to the evaluation of protein kinase inhibitors.
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Affiliation(s)
- Shujiro Shiosaki
- Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka 819-0395, Japan
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98
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Kushio S, Tsuchiya A, Nakamura Y, Nobori T, Kim CW, Zhao GX, Funamoto T, Lee EK, Niidome T, Mori T, Katayama Y. CANCER-SPECIFIC GENE CARRIERS RESPONDING TO CANCER MICROENVIRONMENT: ACIDOSIS AND HYPER-ACTIVATED PROTEIN KINASES. Biomed Eng Appl Basis Commun 2013. [DOI: 10.4015/s101623721340005x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Protein kinase (PK)-responsive gene carriers modified with polyethylene glycol (PEG) chains using an acid-labile linker were developed. These carriers were obtained by modifying the PEG chains and substrate peptides for the PKs (PKA or PKCα) on the branched polyethyleneimine main chain. Polyplexes formed from these carriers and plasmid DNA (pDNA) were stably dispersed under neutral pH medium. The polyplexes were also taken up by cells on the release of the PEG chains under the slightly acidic extracellular pH associated with cancer cells. The polyplexes taken up by cells resulted in gene expression when the substrate peptides were phosphorylated by the intracellular PKs to release pDNA from the polyplexes. These novel gene carriers are expected to be promising for cancer-specific gene therapy via intravenous administration.
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Affiliation(s)
- Satoshi Kushio
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Akira Tsuchiya
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yuta Nakamura
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takanobu Nobori
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Chan Woo Kim
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Guo Xi Zhao
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Taiki Funamoto
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Eun Kyung Lee
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takuro Niidome
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Future Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takeshi Mori
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Future Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshiki Katayama
- Department of Applied Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Future Chemistry, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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99
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Kim CW, Baik SH. Robotic rectal surgery: what are the benefits? MINERVA CHIR 2013; 68:457-469. [PMID: 24101003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Robotic rectal surgery is not a rare event for colorectal surgeons any more. Even patients with colorectal diseases obtain information through the mass media and are asking surgeons about robotic surgery. Since laparoscopic rectal surgery has proved to have some benefits compared to open rectal surgery, many surgeons became interested in robotic rectal surgery. Some of them have reported the advantages and disadvantages of robotic rectal surgery over the last decade. This review will report on the outcomes of robotic rectal surgery. Robotic rectal surgery requires a longer operation time than laparoscopic or open surgery, but many authors reduced the gap as they were accustomed to the robotic system and used various additional techniques. The high cost for purchasing and maintaining the robotic system is still a problem, though. However, except for this reason, robotic rectal surgery shows comparable and even superior results in some parameters than laparoscopic or open surgery. They include pathologic and functional outcomes as well as short-term outcomes such as complication rates, length of hospital stay, time to recover normal bowel function or first flatus, time to start diet, and postoperative pain. Moreover, studies on oncologic outcomes show acceptable results. Robotic rectal surgery is safe and feasible and has a number of benefits. Therefore, it can be an alternative option to conventional laparoscopic and open surgery with strict indications.
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Affiliation(s)
- C W Kim
- Section of Colon and Rectal Surgery, Department of Surgery, Yonsei University College of Medicine Seoul, Republic of Korea -
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100
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Nakamura Y, Kim CW, Tsuchiya A, Kushio S, Nobori T, Li K, Lee EK, Zhao GX, Funamoto D, Niidome T, Mori T, Katayama Y. Branched polyethylenimine-based PKCα-responsive gene carriers. J Biomater Sci Polym Ed 2013; 24:1858-68. [PMID: 24073611 DOI: 10.1080/09205063.2013.807459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We examined in vitro performance of the branched polyethylenimine (bPEI)-based gene carriers which respond to cancer-specific activation of protein kinase Cα (PKCα) to express plasmid DNA. The carriers were synthesized straightforward by using amide bond formation between a peptide terminal carboxyl and a primary amine group of bPEI. To examine the effect of the peptide contents in the carrier, we prepared several carriers with various peptide contents. The obtained polymers form polyplexes with tighter condensation of plasmid DNA than our previous gene carriers. After internalization of the polyplexes via endocytosis, the polyplexes effectively escaped from the endosome into cytosol. Then, the polyplexes showed a clear-cut response to PKCα to release plasmid DNA for gene expression. We determined the optimum contents of the peptides in carriers as 5 mol% to achieve the clear-cut response to PKCα.
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Affiliation(s)
- Yuta Nakamura
- a Graduate School of Systems Life Sciences, Kyushu University , 744 Motooka , Nishi-ku , Fukuoka , 819-0395 , Japan
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