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Choi CH, Lee JW, Bae DS, Kang ES, Cho D, Kim YM, Kim K, Kim JW, Kim HS, Kim YT, Lee JY, Lim MC, Oh T, Song B, Jeon I, Park M, Kim WH, Kang CY, Kim BG. Efficacy and safety of BVAC-C in HPV type 16- or 18-positive cervical carcinoma who failed 1st platinum-based chemotherapy: a phase I/IIa study. Front Immunol 2024; 15:1371353. [PMID: 38605958 PMCID: PMC11007103 DOI: 10.3389/fimmu.2024.1371353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/11/2024] [Indexed: 04/13/2024] Open
Abstract
Background BVAC-C, a B cell- and monocyte-based immunotherapeutic vaccine transfected with recombinant HPV E6/E7, was well tolerated in HPV-positive recurrent cervical carcinoma patients in a phase I study. This phase IIa study investigates the antitumor activity of BVAC-C in patients with HPV 16- or 18-positive cervical cancer who had experienced recurrence after a platinum-based combination chemotherapy. Patients and methods Patients were allocated to 3 arms; Arm 1, BVAC-C injection at 0, 4, 8 weeks; Arm 2, BVAC-C injection at 0, 4, 8, 12 weeks; Arm 3, BVAC-C injection at 0, 4, 8, 12 weeks with topotecan at 2, 6, 10, 14 weeks. Primary endpoints were safety and objective response rate (ORR) as assessed by an independent radiologist according to Response Evaluation Criteria in Solid Tumors version 1.1. Secondary endpoints included the disease control rate (DCR), duration of response (DOR), progression-free survival (PFS), and overall survival (OS). Results Of the 30 patients available for analysis, the ORR was 19.2% (Arm 1: 20.0% (3/15), Arm 2: 33.3% (2/6), Arm3: 0%) and the DCR was 53.8% (Arm 1: 57.1%, Arm 2: 28.6%, Arm3: 14.3%). The median DOR was 7.5 months (95% CI 7.1-not reported), the median PFS was 5.8 months (95% CI 4.2-10.3), and the median OS was 17.7 months (95% CI 12.0-not reported). All evaluated patients showed not only inflammatory cytokine responses (IFN-γ or TNF-α) but also potent E6/E7-specific T cell responses upon vaccinations. Immune responses of patients after vaccination were correlated with their clinical responses. Conclusion BVAC-C represents a promising treatment option and a manageable safety profile in the second-line setting for this patient population. Further studies are needed to identify potential biomarkers of response. Clinical trial registration ClinicalTrials.gov, identifier NCT02866006.
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Affiliation(s)
- Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Duk-Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Eun-Suk Kang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Duck Cho
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yong-Man Kim
- Department of Obstetrics and Gynecology, Asan Medical Center, Seoul, Republic of Korea
| | - Kidong Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jae-Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hee Seung Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Young-Tae Kim
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jung-Yun Lee
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Myong Cheol Lim
- Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Republic of Korea
| | | | | | - Insu Jeon
- Cellid. Inc, Seoul, Republic of Korea
| | | | | | | | - Byoung-Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Germain A, Kim YT. Co-culture device for in vitro high throughput analysis of cancer associated fibroblast and cancer cell interactions. Oncology 2023:000533773. [PMID: 38008083 DOI: 10.1159/000533773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 08/17/2023] [Indexed: 11/28/2023]
Abstract
Introduction Cancers in general, and specifically lung cancer, continue to have low patient survival rates when the patient is at an advanced stage when diagnosed. It appears that the local environment, especially fibroblasts and their signaling molecules, tends to induce metastasis, increase cancer cell resistance to treatment, and aid in tumor growth rates. Since 3-D models quickly become too complex and/or expensive, and therefore rarely leave the lab they are developed in, it is interesting to develop a 2-D model that more closely mimics the clustered tumor formation and bulk interaction with a surrounding fibroblast environment. Methods In the present study, we utilize an off-the-shelf stereolithography 3-D printer, standard use well plates, magnets, and metallic beads to create a customizable 2-D co-culture system capable of being analyzed quantitatively with staining and qualitatively with standard fluorescent/brightfield microscopy to determine cancer-fibroblast interactions while also being able to test chemotherapeutic drugs in a high-throughput manner with standard 96-well plates. Results Comparisons from monoculture and co-culture growth rates shows that the presence of fibroblasts allows for significantly increased growth rates for H460 cancer. Additionally, viability of cancer cells can be quantified with simple cell staining methods and morphology and cell-cell interactions can be observed and studied. Discussion The high throughput model demonstrates that boundary condition changes can be observed between cancer cells and fibroblasts based upon the different chemotherapeutics that have been administered.
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Kim YT, Lee JG, Joo DJ, Kim DY, Seong J. Liver-Directed Combined Radiotherapy for Downstaging of the Milan Advanced Hepatocellular Carcinoma Converting to Liver Transplantation. Int J Radiat Oncol Biol Phys 2023; 117:e308. [PMID: 37785116 DOI: 10.1016/j.ijrobp.2023.06.2332] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Recent success of combined immunotherapy sheds a light to the future of advanced hepatocellular carcinoma patients but still remains as a palliative setting. The best oncologic outcome for HCC can be obtained by curative surgery either by resection or liver transplantation (LT). Efficacy of liver-directed combined radiotherapy (LD-CRT) for downstaging and subsequent surgical resection in locally advanced HCC had been reported earlier by our team. In this study, we investigated the role of LD-CRT as a downstaging strategy for converting advanced hepatocellular carcinoma to LT. MATERIALS/METHODS We reviewed 55 hepatocellular carcinoma patients who had undergone downstaging LD-CRT and subsequent liver transplantation from January 2009 to February 2022. Patients within Milan criteria at the time of receiving radiotherapy were excluded and clinical characteristics and histopathology of explant liver were evaluated. The overall survival and disease-free survival were assessed using the Kaplan-Meier method RESULTS: The median follow-up period was 48.6 months (range 6.9 - 151.7 months). Of 55 patients, 24 (43.6%) were treatment naïve. At the time of RT, 36 patients presented large tumor (tumor diameter >5 cm) or multiple lesions (>3 lesions), 37 with major vessel involvement or portal vein tumor thrombosis, and 7 with extrahepatic lesion. LD-CRT was given as localized concurrent chemoradiation (CCRT) for 41 patients (74.5%) and transarterial chemoembolization (TACE) plus RT for 10 patents (18.2%). Substantial downstaging has been achieved in 38 (69%) patients with initially over the Milan to within Milan. Specifically, 29 of 37 patients initially with major vessel invasion or with tumor thrombosis were successfully converted to microscopic vessel invasion or tumor thrombus-free status in explant liver. 5-year overall survival was 68.1% and 2-year disease-free survival was 51%, respectively. Recurrence after transplantation was observed in 18 patients (4 intrahepatic recurrence and 14 extrahepatic metastasis) and the majority (14/18) occurred within 2 years. CONCLUSION Liver-directed combined radiotherapy as a downstaging strategy for liver transplantation achieved favorable oncologic outcomes in advanced hepatocellular carcinoma patients. This study suggests that active adoption of radiotherapy needs full consideration for locally advanced HCC patients, opening a chance for curative LT.
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Affiliation(s)
- Y T Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J G Lee
- Department of Surgery, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - D J Joo
- Department of Surgery, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - D Y Kim
- Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Seong
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Park SJ, Na KJ, Lee M, Park IK, Chung HH, Kang CH, Kim JW, Park NH, Kim YT, Song YS, Park S, Kim HS. Impact of supradiaphragmatic lymphadenectomy on the survival of patients in stage IVB ovarian cancer with thoracic lymph node metastasis. Front Oncol 2023; 13:1203127. [PMID: 37637060 PMCID: PMC10448516 DOI: 10.3389/fonc.2023.1203127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 07/11/2023] [Indexed: 08/29/2023] Open
Abstract
Introduction To evaluate the survival impact of supradiaphragmatic lymphadenectomy as part of debulking surgery in stage IVB ovarian cancer with thoracic lymph node metastasis (LNM). Methods We retrospectively enrolled patients diagnosed with stage IVB ovarian, fallopian or primary peritoneal cancer between 2010 and 2020, carrying cardiophrenic, parasternal, anterior mediastinal or supraclavicular lymph nodes ≥5 mm on axial chest computed tomography. All tumors were classified into the abdominal (abdominal tumors and cardiophrenic lymph nodes) and supradiaphragmatic (parasternal, anterior mediastinal or supraclavicular lymph nodes) categories depending on the area involved. Residual tumors were classified into <5 vs ≥5 mm in the abdominal and supradiaphragmatic areas. Based on the site of recurrence, they were divided into abdominal, supradiaphragmatic and other areas. Results A total of 120 patients underwent primary debulking surgery (PDS, n=68) and interval debulking surgery after neoadjuvant chemotherapy (IDS/NAC, n=53). Residual tumors in the supradiaphragmatic area ≥5 mm adversely affected progression-free survival (PFS) and overall survival (OS) with marginal significance after PDS despite the lack of effect on survival after IDS/NAC (adjusted hazard ratios [HRs], 6.478 and 6.370; 95% confidence intervals [CIs], 2.224-18.864 and 0.953-42.598). Further, the size of residual tumors in the abdominal area measuring ≥5 mm diminished OS after IDS/NAC (adjusted HR, 9.330; 95% CIs, 1.386-62.800). Conclusion Supradiaphragmatic lymphadenectomy during PDS may improve survival in patients diagnosed with stage IVB ovarian cancer manifesting thoracic LNM. Further, suboptimal debulking surgery in the abdominal area may be associated with poor OS after IDS/NAC. Trial registration ClinicalTrials.gov (NCT05005650; https://clinicaltrials.gov/ct2/show/NCT05005650; first registration, 13/08/2021).Research Registry (Research Registry UIN, researchregistry7366; https://www.researchregistry.com/browse-the-registry#home/?view_2_search=researchregistry7366&view_2_page=1).
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Affiliation(s)
- Soo Jin Park
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kwon Joong Na
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Maria Lee
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - In Kyu Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyun Hoon Chung
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Chang Hyun Kang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jae-Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Noh Hyun Park
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Young-Tae Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yong Sang Song
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Samina Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hee Seung Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
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Eoh KJ, Lee TK, Nam EJ, Kim SW, Kim YT. Clinical Relevance of Red Blood Cell Distribution Width (RDW) in Endometrial Cancer: A Retrospective Single-Center Experience from Korea. Cancers (Basel) 2023; 15:3984. [PMID: 37568799 PMCID: PMC10417026 DOI: 10.3390/cancers15153984] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 07/14/2023] [Revised: 07/28/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
BACKGROUND Red blood cell distribution width (RDW) is a standard parameter of complete blood count and indicates the variability in red blood cell size. This study aimed to determine whether preoperative RDW can be used to predict the recurrence and prognosis of endometrial carcinoma. METHODS The medical records of 431 patients diagnosed with endometrial carcinoma were retrospectively reviewed between May 2006 and June 2018. In addition to RDW, the clinicopathological factors, survival curves, and prognoses of the patients with endometrial carcinoma were compared between the high (n = 213) and low (n = 218) groups according to the median RDW value (12.8%). RESULTS The patients with high RDW had significantly advanced-stage (p = 0.00) pelvic lymph node metastasis (p = 0.01) and recurrence (p = 0.01) compared to those in the low-RDW group. In univariate analysis with DFS as the endpoint, surgical stage, type II histology, grade, RDW, and lymph node metastasis were independently associated with survival. Patients with high RDW values had significantly shorter disease-free survival and overall survival than those with low RDW values (log-rank p = 0.03, log-rank p = 0.04, respectively). CONCLUSION Our results demonstrate that RDW is a simple and convenient indicator of endometrial carcinoma recurrence. Prospective studies are needed to validate the findings of the current study.
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Affiliation(s)
- Kyung-Jin Eoh
- Department of Obstetrics and Gynecology, Yongin Severance Hospital, College of Medicine, Yonsei University, Yongin 16995, Republic of Korea;
| | - Tae-Kyung Lee
- Department of Obstetrics and Gynecology, College of Medicine, Inha University, Incheon 22332, Republic of Korea;
| | - Eun-Ji Nam
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Severance Hospital, College of Medicine, Yonsei University, Seoul 06273, Republic of Korea; (E.-J.N.); (S.-W.K.)
| | - Sang-Wun Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Severance Hospital, College of Medicine, Yonsei University, Seoul 06273, Republic of Korea; (E.-J.N.); (S.-W.K.)
| | - Young-Tae Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Severance Hospital, College of Medicine, Yonsei University, Seoul 06273, Republic of Korea; (E.-J.N.); (S.-W.K.)
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Park SY, Park S, Lee GD, Kim HK, Choi S, Kim HR, Kim YH, Kim DK, Park SI, Hong TH, Choi YS, Kim J, Cho JH, Shim YM, Zo JI, Na KJ, Park IK, Kang CH, Kim YT, Park BJ, Lee CY, Lee JG, Kim DJ, Paik HC. The Role of Adjuvant Therapy Following Surgical Resection of Small Cell Lung Cancer: A Multi-Center Study. Cancer Res Treat 2023; 55:94-102. [PMID: 35681109 PMCID: PMC9873341 DOI: 10.4143/crt.2022.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/05/2022] [Accepted: 06/08/2022] [Indexed: 02/04/2023] Open
Abstract
PURPOSE This multi-center, retrospective study was conducted to evaluate the long-term survival in patients who underwent surgical resection for small cell lung cancer (SCLC) and to identify the benefit of adjuvant therapy following surgery. MATERIALS AND METHODS The data of 213 patients who underwent surgical resection for SCLC at four institutions were retrospectively reviewed. Patients who received neoadjuvant therapy or an incomplete resection were excluded. RESULTS The mean patient age was 65.29±8.93 years, and 184 patients (86.4%) were male. Lobectomies and pneumonectomies were performed in 173 patients (81.2%), and 198 (93%) underwent systematic mediastinal lymph node dissections. Overall, 170 patients (79.8%) underwent adjuvant chemotherapy, 42 (19.7%) underwent radiotherapy to the mediastinum, and 23 (10.8%) underwent prophylactic cranial irradiation. The median follow-up period was 31.08 months (interquartile range, 13.79 to 64.52 months). The 5-year overall survival (OS) and disease-free survival were 53.4% and 46.9%, respectively. The 5-year OS significantly improved after adjuvant chemotherapy in all patients (57.4% vs. 40.3%, p=0.007), and the survival benefit of adjuvant chemotherapy was significant in patients with negative node pathology (70.8% vs. 39.7%, p=0.004). Adjuvant radiotherapy did not affect the 5-year OS (54.6% vs. 48.5%, p=0.458). Age (hazard ratio [HR], 1.032; p=0.017), node metastasis (HR, 2.190; p < 0.001), and adjuvant chemotherapy (HR, 0.558; p=0.019) were associated with OS. CONCLUSION Adjuvant chemotherapy after surgical resection in patients with SCLC improved the OS, though adjuvant radiotherapy to the mediastinum did not improve the survival or decrease the locoregional recurrence rate.
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Affiliation(s)
- Seong Yong Park
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul,
Korea,Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Samina Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul,
Korea
| | - Geun Dong Lee
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
| | - Hong Kwan Kim
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Sehoon Choi
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
| | - Hyeong Ryul Kim
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
| | - Yong-Hee Kim
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
| | - Dong Kwan Kim
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
| | - Seung-Il Park
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
| | - Tae Hee Hong
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Yong Soo Choi
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Jhingook Kim
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Jong Ho Cho
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Young Mog Shim
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Jae Ill Zo
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Kwon Joong Na
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul,
Korea
| | - In Kyu Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul,
Korea
| | - Chang Hyun Kang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul,
Korea
| | - Young-Tae Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul,
Korea
| | - Byung Jo Park
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul,
Korea
| | - Chang Young Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul,
Korea
| | - Jin Gu Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul,
Korea
| | - Dae Joon Kim
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul,
Korea
| | - Hyo Chae Paik
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul,
Korea
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Lee YJ, Nam EJ, Kim S, Kim YT, Itkin-Ansari P, Kim SW. Expression Profiles of ID and E2A in Ovarian Cancer and Suppression of Ovarian Cancer by the E2A Isoform E47. Cancers (Basel) 2022; 14:cancers14122903. [PMID: 35740568 PMCID: PMC9221321 DOI: 10.3390/cancers14122903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/05/2022] [Accepted: 06/08/2022] [Indexed: 12/10/2022] Open
Abstract
The E2A and inhibitor of DNA binding (ID) proteins are transcription factors involved in cell cycle regulation and cellular differentiation. Imbalance of ID/E2A activity is associated with oncogenesis in various tumors, but their expression patterns and prognostic values are still unknown. We evaluated ID and E2A expression in ovarian cancer cells, and assessed the possibility of reprogramming ovarian cellular homeostasis by restoring the ID/E2A axis. We analyzed copy number alterations, mutations, methylations, and mRNA expressions of ID 1-4 and E2A using The Cancer Genome Atlas data of 570 ovarian serous cystadenocarcinoma patients. Incidentally, 97.2% cases exhibited gain of ID 1-4 or loss of E2A. Predominantly, ID 1-4 were hypomethylated, while E2A was hypermethylated. Immunohistochemical analysis revealed that ID-3 and ID-4 expressions were high while E2A expression was low in cancerous ovarian tissues. Correlation analysis of ID and E2A levels with survival outcomes of ovarian cancer patients indicated that patients with high ID-3 levels had poor overall survival. We also determined the effect of E2A induction on ovarian cancer cell growth in vitro and in vivo using SKOV-3/Luc cells transduced with tamoxifen-inducible E47, a splice variant of E2A. Interestingly, E47 induced SKOV-3 cell death in vitro and inhibited tumor growth in SKOV-3 implanted mice. Therefore, restoring ID/E2A balance is a promising approach for treating ovarian cancer.
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Affiliation(s)
- Yong-Jae Lee
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul 03722, Korea; (Y.-J.L.); (E.-J.N.); (S.K.); (Y.-T.K.)
| | - Eun-Ji Nam
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul 03722, Korea; (Y.-J.L.); (E.-J.N.); (S.K.); (Y.-T.K.)
| | - Sunghoon Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul 03722, Korea; (Y.-J.L.); (E.-J.N.); (S.K.); (Y.-T.K.)
| | - Young-Tae Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul 03722, Korea; (Y.-J.L.); (E.-J.N.); (S.K.); (Y.-T.K.)
| | - Pamela Itkin-Ansari
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
- Correspondence: (P.I.-A.); (S.-W.K.)
| | - Sang-Wun Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul 03722, Korea; (Y.-J.L.); (E.-J.N.); (S.K.); (Y.-T.K.)
- Correspondence: (P.I.-A.); (S.-W.K.)
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Lim EY, Song EJ, Kim JG, Jung SY, Lee SY, Shin HS, Nam YD, Kim YT. Lactobacillus intestinalis YT2 restores the gut microbiota and improves menopausal symptoms in ovariectomized rats. Benef Microbes 2021; 12:503-516. [PMID: 34463192 DOI: 10.3920/bm2020.0217] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 12/15/2022]
Abstract
There are many studies focusing on the alleviation of menopausal symptoms; however, little is known about the role of gut microorganisms in menopausal symptoms. Ovariectomized (OVX) rats were administered a novel strain (YT2) of Lactobacillus intestinalis (a species with significantly reduced abundance in OVX rats) and the potential probiotic effect on the improvement of menopausal symptoms was evaluated. Of note, the gut microbial composition completely shifted after ovariectomy in rats. Treatment with L. intestinalis YT2 significantly alleviated menopausal symptoms, such as increased fat mass, decreased bone mineral density, increased pain sensitivity, depression-like behaviour, and cognitive impairment. Additionally, the administration of L. intestinalis YT2 restored the intestinal microbial composition, including an increased Firmicutes/Bacteroides ratio. L. intestinalis YT2 also promoted gut barrier integrity by increasing the mRNA levels of tight junction-related markers. In conclusion, L. intestinalis YT2 treatment alleviated menopausal symptoms via the modulation of the gut microbiota. Importantly, these results suggest that L. intestinalis YT2 should be considered as a therapeutic probiotic agent for menopausal women.
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Affiliation(s)
- E Y Lim
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea.,Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - E-J Song
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea
| | - J G Kim
- Food Functional Evaluation Support Team, Technical Assistance Center, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea
| | - S Y Jung
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea.,Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - S-Y Lee
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea.,Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - H S Shin
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea.,Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Y-D Nam
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea
| | - Y T Kim
- Division of Food Functionality, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea.,Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
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9
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Park GR, Kim HS, Kim YT, Chung HJ, Ha SJ, Kim DW, Kang DR, Kim JY, Lee MY, Lee JY. Waist circumference and the risk of lumbar and femur fractures: a nationwide population-based cohort study. Eur Rev Med Pharmacol Sci 2021; 25:1198-1205. [PMID: 33629289 DOI: 10.26355/eurrev_202102_24822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Although obesity is known to have an influence on fracture, the relationship between lumbar and femur fractures and weight or waist circumference is controversial. We investigated the incidence of fracture with regards to waist circumference using the customised database of the Korean National Health Insurance Service (NHIS). Among 8,922,940 adults who participated at least twice in the NHIS National Health Check-up Program in South Korea between 2009 and 2011, 1,556,751 subjects (780,074 men and 776,677 women) were extracted. Over a mean follow-up of 6.5 years, multivariate-adjusted logistic regression analysis demonstrated that higher waist circumference was associated with an increased risk of femur fractures in both males and females. Moreover, the incidence of lumbar fractures was also positively associated with an increased waist circumference in males and females. An increased waist circumference showed a positive linear relationship with the risk of lumbar and femur fractures in both males and females.
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Affiliation(s)
- G R Park
- Department of Internal Medicine, Yonsei Wonju College of Medicine, Wonju, Republic of Korea.
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10
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Shen Q, Hill T, Cai X, Bui L, Barakat R, Hills E, Almugaiteeb T, Babu A, Mckernan PH, Zalles M, Battiste JD, Kim YT. Physical confinement during cancer cell migration triggers therapeutic resistance and cancer stem cell-like behavior. Cancer Lett 2021; 506:142-151. [PMID: 33639204 PMCID: PMC8112468 DOI: 10.1016/j.canlet.2021.01.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/22/2020] [Accepted: 01/13/2021] [Indexed: 01/06/2023]
Abstract
Metastasized cancer cells have an increased resistance to therapies leading to a drastic decrease in patient survival rates. However, our understanding of the cause for this enhanced resistance is lacking. In this study, we report that physically tight confinement during cancer cell migration triggers therapeutic resistance and induces cancer stem cell-like behavior including up-regulation in efflux proteins and in cancer stem cell related markers. Moreover, the re-localization of Yes-associated protein (YAP) to the cell nucleus indicated an elevated level of cytoskeletal tension. The increased cytoskeletal tension suggested that mechanical interactions between cancer cells and tight surroundings during metastasis is one of the factors that contributes to therapeutic resistance and acquisition of cancer stem cell (CSC) like features. With this system and supporting data, we are able to study cells with therapeutic resistance and CSC-like properties for the future purpose of developing new strategies for the treatment of metastatic cancer.
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Affiliation(s)
- Qionghua Shen
- Neuroengineering Lab, Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Tamara Hill
- Neuroengineering Lab, Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Xue Cai
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, OK, USA
| | - Loan Bui
- Department of Aerospace & Mechanical Engineering, University of Notre Dame, IN, USA
| | - Rami Barakat
- Neuroengineering Lab, Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Emily Hills
- Neuroengineering Lab, Department of Bioengineering, University of Texas at Arlington, TX, USA
| | | | - Anish Babu
- Department of Neurology, University of Oklahoma Health Sciences Center, OK, USA
| | - Patrick H Mckernan
- Department of Neurology, University of Oklahoma Health Sciences Center, OK, USA
| | | | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, OK, USA.
| | - Young-Tae Kim
- Neuroengineering Lab, Department of Bioengineering, University of Texas at Arlington, TX, USA; Department of Urology, UT Southwestern Medical Center, TX, USA.
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11
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Choi CH, Kim BG, Lee JW, Bae DS, Kang ES, Kim YM, Kim K, Kim JW, Kim YT, Lim MC, Oh T, Kang CY, Cho D, LEE JUNGYUN, Kim HS. Phase IIa study of BVAC-C in HPV type 16 or 18 positive recurrent cervical carcinoma. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.5512] [Citation(s) in RCA: 1] [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: 11/20/2022] Open
Abstract
5512 Background: BVAC-C is a B cell- and monocyte-based immunotherapeutic vaccine transfected with recombinant HPV E6/E7, which was well tolerated in HPV positive recurrent cervical carcinoma in phase I study (J Clin Med. 2020 Jan 5;9(1):147). This phase IIa study sought to determine the antitumor activity of BVAC-C. Methods: Twenty-one patients with HPV 16 or 18 positive recurrent cervical cancer who had experienced recurrence after one prior platinum-based combination chemotherapy were enrolled. They were allocated to 3 arms; Arm 1, BVAC-C injection at 0, 4, 8 weeks (1x108 cells/dose); Arm 2, BVAC-C injection at 0, 4, 8, 12 weeks (5x107 cells/dose); Arm 3, BVAC-C injection at 0, 4, 8, 12 weeks (5x107 cells/dose) with topotecan at 2, 6, 10, 14 weeks (0.75 mg/m2 for 3 days). Results: The overall response rate was 21% (Arm 1: 29% (2/7), Arm 2: 25% (1/4), Arm 3 : 0 % (0/3)) among the evaluable patients (N = 14), and the median duration of response was 18 months (range, 9 – 26 months). The disease control rate was 43% (Arm 1: 29% (2/7), Arm 2: 50% (2/4), Arm 3 : 67 % (2/3)) and the median duration of stable disease were 12 months (range, 6 - 26 months). The median progression-free survival in all patients was 4 months (95% CI, 2 to Infinite months). Immune responses of patients after vaccination were shown to be correlated with clinical responses of them. Consistent with Phase I study, all evaluated patients showed not only inflammatory cytokine responses (IFN-γ or TNF-α), which might be mediated by the activation of natural killer cells and natural killer T cells, but also potent E6/E7-specific T cell responses upon vaccinations. Conclusions: BVAC-C demonstrated a durable antitumor activity with an immune response in HPV 16- or 18-positive recurrent cervical carcinoma patients who failed 1st line platinum based chemotherapy. Clinical trial information: NCT02866006.
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Affiliation(s)
| | - Byoung-Gie Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Duk-Soo Bae
- Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, South Korea
| | | | - Yong-Man Kim
- Department of Obstetrics and Gynecology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Kidong Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | | | - Young-Tae Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul, South Korea
| | | | | | - Chang-Yuil Kang
- Laboratory of Immunology, College of Pharmacy, Seoul National University and Cellid, Inc., Seoul City, South Korea
| | - Duck Cho
- Samsung Medical Center, Seoul, South Korea
| | - JUNG-YUN LEE
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Hee Seung Kim
- Seoul National University College of Medicine, Seoul, South Korea
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12
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Kim N, Choi SH, Chang JS, Kim YT, Kim SW, Kim GM, Kim YB. Use of bevacizumab before or after radiotherapy increases the risk of fistula formation in patients with cervical cancer. Int J Gynecol Cancer 2020; 31:59-65. [PMID: 33273018 DOI: 10.1136/ijgc-2020-002031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 09/02/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE Several reports have documented the risk of fistula formation after bevacizumab in patients previously treated with radiation therapy. The aim of this study was to investigate the risk of fistula formation with bevacizumab and radiotherapy compared with radiotherapy alone. METHODS We retrospectively analyzed patients with stage I-IV cervical cancer between January 2013 and December 2018. Patients who had a history of pelvic radiotherapy, who were treated with intracavitary brachytherapy alone, received radiotherapy at another hospital, received concurrent bevacizumab and radiotherapy, or had missing follow-up data or a short follow-up period (<6 months) were excluded. The fistula rates were compared between the groups using the Cox proportional hazards model and propensity score analyses. RESULTS A total of 302 patients were included in the study: 249 patients were treated with definitive or adjuvant radiotherapy, and 53 patients were treated with radiotherapy before or after bevacizumab. With a median follow-up of 35.9 (IQR 22.8-53.5) months, the 3 year cumulative fistula incidence rate was significantly higher in the radiotherapy + bevacizumab group than in the radiotherapy group (27.0% vs 3.0%, p<0.001). Bevacizumab administration was significantly associated with fistula formation in the multivariable adjusted model (HR 4.76, 95% CI 1.71 to 13.23) and three propensity score adjusted model (all p<0.05). Biologically equivalent dose in 2 Gy fractions for 2 cc of the rectum more than 76 Gy was also associated with fistula formation (HR 4.30, 95% CI 1.52 to 12.18). Additionally, a 10 month interval between radiotherapy and bevacizumab reduced the incidence of fistula formation in the radiotherapy + bevacizumab group (p=0.032). CONCLUSIONS In patients with cervical cancer treated with pelvic radiotherapy, the addition of bevacizumab substantially increased the risk of fistula formation. Physicians should perform pelvic radiotherapy in combination with bevacizumab with caution; moreover, close monitoring for fistula formation is warranted in these patients.
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Affiliation(s)
- Nalee Kim
- Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
| | - Seo Hee Choi
- Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
| | - Jee Suk Chang
- Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
| | - Young-Tae Kim
- Obstetrics and Gynecology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
| | - Sang Wun Kim
- Obstetrics and Gynecology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
| | - Gun Min Kim
- Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
| | - Yong Bae Kim
- Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea (the Republic of)
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13
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Shen Q, Niederstrasser H, Barakat R, Haddadin Z, Miller SR, Posner B, Kim YT. Single-cell-level screening method for migratory cancer cells and its potential feasibility in high-throughput manner. Biofabrication 2020; 12:035019. [PMID: 32408287 DOI: 10.1088/1758-5090/ab9315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
High-throughput screening (HTS) is a well-established approach for tumor-specific drug development because of its high efficiency and customizable selection of antineoplastic drugs. However, there is still a lack of an appropriate cell-based HTS specific for migratory cancer cells. In the study presented here, we created a novel assay (mHTS): a single-cell-level screening method targeting migratory cancer cells and can be applied in a high-throughput manner. This mHTS platform is based on microchannel devices (providing physical confinement during cell migration and limit migrating cells' proliferation rate) assembled 96-well plate (fitting to HTS manner). To determine the feasibility of this assay, we quantified the anti-migratory and anti-viability effects of several molecules (Cytochalasin D, Doxorubicin and AZD-6244) on migrating (creeping inside microchannel) glioblastoma multiforme (GBM) cells. After analyzing migration screening data that was collected on a single-cell-level, we were able to compare those drug's effects on cancer cells' migration velocity and uncovered the migration inhibiting potential of AZD (500 nM and 1000 nM). Viability data based on single-cell-level screening also allowed us to further understand the same drug's different lethality toward migrating and normal 2D cultured cancer cells. The Pre-classification of subpopulations enables us to study the heterogeneity of cancer and ensures our method's feasibility for a high-throughput manner. All these results proved our mHTS platform is suitable for single-cell-level anti-migration drug screening and has potential feasibility in promoting the development of anti-migratory-cancer-drug in a high-throughput manner.
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Affiliation(s)
- Qionghua Shen
- Department of Bioengineering, University of Texas, Arlington, TX, United States of America
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14
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Abstract
Using a microfluidic platform to apply negative aspiration pressure (–20, –25, –30, –35 and –40 cm H2O), we compared the differences in creep responses of Glioblastoma Multiforme (GBM) cells while migrating in confinement and at a stationary state on a 2D substrate. Cells were either migrating in a channel of 5 x 5 μm cross-section or stationary at the entrance to the channel. In response to aspiration pressure, we found actively migrating GBM cells exhibited a higher stiffness than stationary cells. Additionally, migrating cells absorbed more energy elastically with a relatively small dissipative energy loss. At elevated negative pressure loads up to – 30 cm H2O, we observed a linear increase in elastic deformation and a higher distribution in elastic storage than energy loss, and the response plateaued at further increasing negative pressure loads. To explore the underlying cause, we carried out immuno-cytochemical studies of these cells and found a polarized actin and myosin distribution at the front and posterior ends of the migrating cells, whereas the distribution of the stationary group demonstrated no specific regional differences. These differences in creep response and cytoskeletal protein distribution demonstrate the importance of a migrating cell’s kinematic state to the mechanism of cell migration.
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Affiliation(s)
- Ishan Khan
- Joint Graduate Program in Biomedical Engineering, University of Texas at Arlington and University of Texas Southwestern Medical Center at Dallas
| | - Loan Bui
- Joint Graduate Program in Biomedical Engineering, University of Texas at Arlington and University of Texas Southwestern Medical Center at Dallas
| | - Robert Bachoo
- Department of Neurology & Neurotherapeutics University of Texas Southwestern Medical Center at Dallas , Dallas, Texas.,Department of Bioengineering, University of Texas at Arlington , Texas
| | - Young-Tae Kim
- Joint Graduate Program in Biomedical Engineering, University of Texas at Arlington and University of Texas Southwestern Medical Center at Dallas
| | - Cheng-Jen Chuong
- Joint Graduate Program in Biomedical Engineering, University of Texas at Arlington and University of Texas Southwestern Medical Center at Dallas
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15
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Kim YN, Eoh KJ, Lee JY, Nam EJ, Kim S, Kim YT, Kim SW. Comparison of outcomes between the one-step and two-step sentinel lymph node mapping techniques in endometrial cancer. Int J Gynecol Cancer 2020; 30:318-324. [PMID: 31992601 DOI: 10.1136/ijgc-2019-000962] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 09/22/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Fluorescence image-guided sentinel lymph node (SLN) biopsy using a two-step mapping technique incorporates sequential injection of indocyanine green into the bilateral uterine cornus, followed by cervical injection. Outcomes were compared with the conventional cervical (one-step) method . METHODS Patients with FIGO stage I-III endometrial cancer who underwent laparoscopic or robotic staging, including SLN biopsy, from May 2014 to December 2018, were retrospectively reviewed. Patient characteristics, pre-operative imaging, SLN detection pattern, pathologic result, adjuvant, and recurrence locations were analyzed. RESULTS A total of 199 patients received one-step (n=123) and two-step (n=76) SLN biopsy. Para-aortic SLN were more frequently identified in the two-step group. Lower and upper para-aortic SLN were identified in 67.1% and 38.2%, respectively, in the two-step group and in 18.7% and 5.7% in the one-step group (p<0.001). The number of para-aortic SLN harvested was superior in the two-step group (p<0.001). Metastatic para-aortic SLN were found in 7.9% of the two-step group and 2.4% of the one-step group (p=0.070). In detecting nodal metastasis, the sensitivities of the one- and two-step methods were 91.7% and 100.0%, negative predictive values were 99.0% and 100.0%, false-negative rates were 8.3% and 0%, and accuracy rates were 99.1% and 100.0%, respectively. The one-step method identified only three out of eight para-aortic lymph node metastases and missed five para-aortic lymph node metastases. There was no missed para-aortic lymph node metastasis in the two-step group. Recurrence was observed in two patients (2.6%; vaginal vault and adrenal gland) in the two-step group and seven patients (5.7%) including three nodal recurrences in the one-step group (p=0.307). DISCUSSION Two-step SLN mapping improved the para-aortic SLN detection rate, a known pitfall of conventional cervical injection. Proper evaluation of aortic nodal status will assist in the tailoring of adjuvant and prevent undertreatment of patients with isolated para-aortic metastasis.
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Affiliation(s)
- Yoo-Na Kim
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyung Jin Eoh
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jung-Yun Lee
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eun Ji Nam
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - SungHoon Kim
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Tae Kim
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sang Wun Kim
- Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea
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17
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Choi HM, Jung SY, Kim SJ, Yang HJ, Kim JH, Kim YT, Shin JC, Lee HY. Clinical Anatomy of the Puboprostatic Ligament for the Safe Guidance for the Prostate Surgery. Urology 2019; 136:190-195. [PMID: 31730940 DOI: 10.1016/j.urology.2019.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 10/21/2019] [Accepted: 10/26/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To provide the anatomy of the puboprostatic ligament and related structures to save urogenital competence after prostatectomy. MATERIALS AND METHODS Pelvic areas of 31 adult cadavers were dissected to figure out the shape, number, and location of the puboprostatic ligaments. RESULTS The puboprostatic ligament was the most important support structure between the pubic bone and prostate gland. Puboprostatic ligaments were bilaterally single (61.3%), bilaterally double (19.4%), or mixed (19.4%). Ligaments were mostly I-shaped (53.8%). If ligaments had extra attachment to or from the arcuate line, the ligaments were λ-shaped (36.3%), or Y-shaped (8.8%). In one case, the ligament had a central fusion with an irregular shape. I-shaped puboprostatic ligaments were observed more frequently in specimens with double ligaments, while λ-shaped puboprostatic ligaments were observed more frequently in the cases with single ligaments. The average distance between both puboprostatic ligaments was 8.1 mm at the pubic site and 14.2 mm at the prostate site. The distance was narrower when the specimen had double puboprostatic ligaments on both sides. The neurovascular bundle ran beneath the puboprostatic ligament. If the ligament was the λ-shaped type, the neurovascular bundle frequently pierced the lateral band of the ligament. CONCLUSION Puboprostatic ligaments hold and stabilize the prostate against the pubic bone. It is believed that a pelvis with bilateral, double puboprostatic ligaments would have advantages in urogenital competence. The morphologic data of the shape, multiplicity, and location of the PPLs would help to make a plan to approach the prostate.
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Affiliation(s)
- Hyun-Min Choi
- Department of Medicine, The Graduate School, Yonsei University, Seoul, South Korea
| | - So-Young Jung
- Department of Anatomy, Yonsei University College of Medicine, Seoul, South Korea
| | - Soo-Jung Kim
- Department of Medicine, The Graduate School, Yonsei University, Seoul, South Korea; Department of Anatomy, Yonsei University College of Medicine, Seoul, South Korea
| | - Hee-Jun Yang
- Department of Anatomy, Yonsei University College of Medicine, Seoul, South Korea
| | - Jang-Hwan Kim
- Department of Urology, Yonsei University College of Medicine, Seoul, South Korea
| | - Young-Tae Kim
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji-Cheol Shin
- Department of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Hye-Yeon Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul, South Korea.
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18
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Abdallah MG, Almugaiteeb TI, Raza MU, Battiste JD, Kim YT, Iqbal SM. Glioblastoma Multiforme heterogeneity profiling with solid-state micropores. Biomed Microdevices 2019; 21:79. [PMID: 31414186 DOI: 10.1007/s10544-019-0416-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 10/26/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common and lethal type of brain cancer. It is characterized by widespread heterogeneity at the cellular and molecular levels. The detection of this heterogeneity is valuable for accurate diagnosis. Herein, solid-state 20 μm diameter micropore made in thin suspended silicon dioxide membrane is used as cell sensor device. The device relies on a cell's mechano-physical properties as an indicator to differentiate between the subtypes of GBM. A library of GBM cell lines (U251, U87, D54 EGFRviii, and G55) was created by measuring the differences in cell's micropore translocation properties from their distinct electrical profiles. Each GBM subtype has distinct phenotype and this was delineated in their cell translocation behaviors. The library was used to distinguish cells from samples of brain tumor patients. The micropore device accurately profiled GBM patient samples for cell subtypes by comparing data with the GBM library. The micropore approach is simple, can be implemented at low cost and can be used in the clinical setups and operation theaters to detect and identify GBM subtypes from patient samples.
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Affiliation(s)
- Mohammad G Abdallah
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX, 76019, USA.,Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA.,Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Turki I Almugaiteeb
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76010, USA.,Research Product Development Company Innovations (RPDC), Riyadh, Kingdom of Saudi Arabia
| | - Muhammad Usman Raza
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX, 76019, USA.,Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA.,Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA.,Intel Corporation, Santa Clara, CA, 95054, USA
| | - James D Battiste
- University of Oklahoma Health Science Center, Oklahoma City, OK, 73104, USA
| | - Young-Tae Kim
- Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA.,Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76010, USA.,Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, 75390, USA
| | - Samir M Iqbal
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX, 76019, USA. .,ST Engineering Matters, Arlington, TX, 76010, USA.
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19
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Towner RA, Smith N, Saunders D, Brown CA, Cai X, Ziegler J, Mallory S, Dozmorov MG, Coutinho De Souza P, Wiley G, Kim K, Kang S, Kong DS, Kim YT, Fung KM, Wren JD, Battiste J. OKN-007 Increases temozolomide (TMZ) Sensitivity and Suppresses TMZ-Resistant Glioblastoma (GBM) Tumor Growth. Transl Oncol 2018; 12:320-335. [PMID: 30468988 PMCID: PMC6251232 DOI: 10.1016/j.tranon.2018.10.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 08/09/2018] [Revised: 09/28/2018] [Accepted: 10/01/2018] [Indexed: 02/06/2023] Open
Abstract
Treatment of glioblastoma (GBM) remains a challenge using conventional chemotherapy, such as temozolomide (TMZ), and is often ineffective as a result of drug resistance. We have assessed a novel nitrone-based agent, OKN-007, and found it to be effective in decreasing tumor volumes and increasing survival in orthotopic GBM xenografts by decreasing cell proliferation and angiogenesis and increasing apoptosis. In this study, we assessed combining OKN-007 with TMZ in vivo in a human G55 GBM orthotopic xenograft model and in vitro in TMZ-resistant and TMZ-sensitive human GBM cell lines. For the in vivo studies, magnetic resonance imaging was used to assess tumor growth and vascular alterations. Percent animal survival was also determined. For the in vitro studies, cell growth, IC50 values, RNA-seq, RT-PCR, and ELISA were used to assess growth inhibition, possible mechanism-of actions (MOAs) associated with combined OKN-007 + TMZ versus TMZ alone, and gene and protein expression levels, respectively. Microarray analysis of OKN-007–treated rat F98 glioma tumors was also carried out to determine possible MOAs of OKN-007 in glioma-bearing animals either treated or not treated with OKN-007. OKN-007 seems to elicit its effect on GBM tumors via inhibition of tumorigenic TGF-β1, which affects the extracellular matrix. When combined with TMZ, OKN-007 significantly increases percent survival, decreases tumor volumes, and normalizes tumor blood vasculature in vivo compared to untreated tumors and seems to affect TMZ-resistant GBM cells possibly via IDO-1, SUMO2, and PFN1 in vitro. Combined OKN-007 + TMZ may be a potentially potent treatment strategy for GBM patients.
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Affiliation(s)
- Rheal A Towner
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA; Department of PathologyUniversity of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - Nataliya Smith
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Debra Saunders
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Chase A Brown
- Arthritis and Clinical Immunology Research Program, Division of Genomics and Data Sciences, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Xue Cai
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Jadith Ziegler
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA; Department of PathologyUniversity of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | | | - Mikhail G Dozmorov
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA, USA
| | | | - Graham Wiley
- Clinical Genomics Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Kyeongsoon Kim
- Department of Pharmaceutical Engineering, Inje University, Gimhae-si, Gyeongsangnam-do, Republic of Korea; Oblato, Inc., Princeton, NJ, USA
| | | | - Doo-Sik Kong
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University, Seoul, Republic of Korea
| | - Young-Tae Kim
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - Kar-Ming Fung
- Department of PathologyUniversity of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Jonathan D Wren
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Arthritis and Clinical Immunology Research Program, Division of Genomics and Data Sciences, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - James Battiste
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Department of NeurologyUniversity of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Shin EH, Cho KJ, Kim YT, Park MH. Risk factors for recurrent lumbar disc herniation after discectomy. Int Orthop 2018; 43:963-967. [PMID: 30327934 DOI: 10.1007/s00264-018-4201-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/08/2018] [Indexed: 12/31/2022]
Abstract
PURPOSE There are many reports about the risk factors for recurrence after lumbar disc surgery. However, there are none about whether lumbosacral transitional vertebrae (LSTV) are associated with recurrent lumbar disc herniation (LDH). We investigated various risk factors for recurrent LDH after discectomy including LSTV. METHODS A total of 119 patients who had undergone a discectomy for L4-5 disc herniation were evaluated with a minimum follow-up of two years. Clinical parameters including age, gender, body mass index (BMI), and smoking status, and radiological parameters including type of herniated disc, degree of disc degeneration, LSTV, and sagittal range of motion (SROM) in flexion-extension radiography were evaluated. SROM was measured by the difference of the lordotic angle between the flexion and extension view. RESULTS Recurrent disc herniation at L4-5 developed in 21 (17.6%) of the 119 patients. The mean period between primary surgery and recurrence was 17.6 ± 21.1 months. LSTV was found in 11 (52.4%) of the 21 patients who had recurrence and seven (7.1%) of the 98 patients in the non-recurrent group. SROM at L4-5 was 11.68 ± 4.24° in the recurrent group and 9.04 ± 3.65° in the non-recurrent group with a significant difference (p = 0.004). Multiple logistic regression analyses confirmed that LSTV and a larger SROM were significant risk factors for recurrent disc herniation at L4-5. CONCLUSIONS Lumbosacral transitional vertebrae and a hypermobile disc in flexion-extension radiography were found to be risk factors for recurrent lumbar disc herniation.
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Affiliation(s)
- Eun-Ho Shin
- Department of Orthopedic Surgery, School of Medicine, Inha University, 27, Inhang-ro, Jung-Gu, Incheon, 22332, South Korea
| | - Kyu-Jung Cho
- Department of Orthopedic Surgery, School of Medicine, Inha University, 27, Inhang-ro, Jung-Gu, Incheon, 22332, South Korea.
| | - Young-Tae Kim
- Department of Orthopedic Surgery, School of Medicine, Inha University, 27, Inhang-ro, Jung-Gu, Incheon, 22332, South Korea
| | - Myung-Hoon Park
- Department of Orthopedic Surgery, School of Medicine, Inha University, 27, Inhang-ro, Jung-Gu, Incheon, 22332, South Korea
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Sanjeewa KA, Kang N, Ahn G, Jee Y, Kim YT, Jeon YJ. Bioactive potentials of sulfated polysaccharides isolated from brown seaweed Sargassum spp in related to human health applications: A review. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.02.040] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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22
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Lee JG, Kim SY, Kim YT, Lee HJ, Park S, Choi SM, Kim DH, Cho WH, Yeo HJ, Park S, Choi SH, Hong SB, Shim TS, Jo KW, Jeon K, Jeong BH, Paik HC. First Report of the Korean Lung Transplantation Registry. Transplant Proc 2018; 50:2759-2763. [PMID: 30401392 DOI: 10.1016/j.transproceed.2018.02.185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/26/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND The Korean Organ Transplantation Registry (KOTRY) began to register lung transplants in 2015. This is an initial report on the status of patients receiving lung transplants over the past 2 years. METHODS We analyzed a total of 69 patients who received lung transplants in 2015 and 2016 and who registered with the KOTRY. RESULTS The 69 patients were treated in 5 institutions. The average (SD) donor age was 39.2 (12.6) years; there were 40 male patients. The average (SD) recipient age was 55.7 (10.0) years, and the number of male recipients was 46. A total of 66 patients underwent bilateral lung transplantation, 3 underwent single-lung transplantation, and 1 underwent simultaneous heart-lung transplantation. The most frequent indication for lung transplantation was idiopathic pulmonary fibrosis (35 patients), followed by connective tissue disease-related interstitial lung disease (9) and acute respiratory failure (8). Prior to transplantation, 23 patients required ventilator care, and 12 required extracorporeal membrane oxygenation while on the waiting list. Episodes of acute rejection during follow-up were reported in 4, 2, 1, and 1 patients at 3, 6, 9, and 12 months, respectively. Infections requiring hospitalization were reported in 27, 10, 4, and 3 patients at 3, 6, 9, and 12 months, respectively. CONCLUSION The establishment of KOTRY renders it possible to collect nationwide data on lung transplantation, improving research on the topic and clarifying clinical feasibility.
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Affiliation(s)
- J G Lee
- Department of Thoracic and Cardiovascular Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - S Y Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Y T Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - H J Lee
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - S Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - S M Choi
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - D H Kim
- Department of Thoracic and Cardiovascular Surgery, YangSan Hospital, Pusan National University, Gyeongsangnam-do, Korea
| | - W H Cho
- Department of Pulmonology and Critical Care Medicine, YangSan Hospital, Pusan National University, Gyeongsangnam-do, Korea
| | - H J Yeo
- Department of Pulmonology and Critical Care Medicine, YangSan Hospital, Pusan National University, Gyeongsangnam-do, Korea
| | - S Park
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S H Choi
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S-B Hong
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - T S Shim
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K-W Jo
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K Jeon
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - B-H Jeong
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H C Paik
- Department of Thoracic and Cardiovascular Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Hasan MR, Hassan N, Khan R, Kim YT, Iqbal SM. Classification of cancer cells using computational analysis of dynamic morphology. Comput Methods Programs Biomed 2018; 156:105-112. [PMID: 29428061 DOI: 10.1016/j.cmpb.2017.12.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 11/09/2017] [Accepted: 12/05/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND AND OBJECTIVE Detection of metastatic tumor cells is important for early diagnosis and staging of cancer. However, such cells are exceedingly difficult to detect from blood or biopsy samples at the disease onset. It is reported that cancer cells, and especially metastatic tumor cells, show very distinctive morphological behavior compared to their healthy counterparts on aptamer functionalized substrates. The ability to quickly analyze the data and quantify the cell morphology for an instant real-time feedback can certainly contribute to early cancer diagnosis. A supervised machine learning approach is presented for identification and classification of cancer cell gestures for early diagnosis. METHODS We quantified the morphologically distinct behavior of metastatic cells and their healthy counterparts captured on aptamer-functionalized glass substrates from time-lapse optical micrographs. As a proof of concept, the morphologies of human glioblastoma (hGBM) and astrocyte cells were used. The cells were captured and imaged with an optical microscope. Multiple feature vectors were extracted to quantify and differentiate the complex physical gestures of cancerous and non-cancerous cells. Three different classifier models, Support Vector Machine (SVM), Random Forest Tree (RFT), and Naïve Bayes Classifier (NBC) were trained with the known dataset using machine learning algorithms. The performances of the classifiers were compared for accuracy, precision, and recall measurements using five-fold cross-validation technique. RESULTS All the classifier models detected the cancer cells with an average accuracy of at least 82%. The NBC performed the best among the three classifiers in terms of Precision (0.91), Recall (0.9), and F1-score (0.89) for the existing dataset. CONCLUSIONS This paper presents a standalone system built on machine learning techniques for cancer screening based on cell gestures. The system offers rapid, efficient, and novel identification of hGBM brain tumor cells and can be extended to define single cell analysis metrics for many other types of tumor cells.
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Affiliation(s)
- Mohammad R Hasan
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX 76019, USA; Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX 76019, USA; Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Naeemul Hassan
- Department of Computer and Information Science, University of Mississippi, University, MS 38677, USA
| | - Rayan Khan
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX 76019, USA; Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX 76019, USA; Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Young-Tae Kim
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA; Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75235, USA
| | - Samir M Iqbal
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX 76019, USA; Department of Electrical Engineering, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA.
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Ryu JS, Choi CM, Yang SC, Song SY, Jeon YJ, Jang TW, Kim DJ, Jang SH, Yang SH, Lee MK, Lee KH, Jo HJ, Jang SJ, Kim YT, Cho JH, Choi YD, Nam HS, Kim HJ, Suh YJ. Prognostic Effect of Age on Survival of Patients with Stage I Adenocarcinoma of the Lung. Tumori 2018; 98:99-104. [DOI: 10.1177/030089161209800114] [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]
Abstract
Aims and Background It is still unclear whether age is an independent prognostic factor in patients with stage I NSCLC. Methods Five hundred and sixty-nine patients with stage I adenocarinoma who underwent surgical resection as first treatment were included. The effect on overall survival of age, gender, smoking habits, Charlson comorbidity index score (CCIS), type of surgery, tumor size and lymphatic or blood vessel invasion was analyzed. Results When the patients were divided into four groups according to quartiles of age, distributions of gender, smoking habit, CCIS, histology, blood vessel invasion and adjuvant chemotherapy were significantly different among the four groups. Age, gender, smoking habit, CCIS, tumor size and lymphatic and blood vessel invasion were significantly associated with overall survival of the patients in Kaplan-Meier analysis (logrank, P <0.001, P <0.001, P = 0.029, P <0.001, P = 0.001, P = 0.001 and P = 0.007, respectively). Moreover, the highest quartile of age (over 68 years old) was a prominent determinant for a worse prognosis after adjustment for the confounding variables using a Cox proportional hazard model (adjusted hazard ratio = 2.735, 95% confidence interval = 1.623–4.608, P <0.001). Conclusions The findings suggest that age is an important determinant of overall survival in patients with stage I adenocarcinoma. Therefore, age should be considered in classifying the patients into groups of higher or lower risk for death as well as in designing clinical trials.
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Affiliation(s)
- Jeong-Seon Ryu
- Center for Lung Cancer and Pulmonary Division, Department of Internal Medicine, Inha University Hospital, Inchon
| | - Chang-Min Choi
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, College of Medicine, University of Ulsan, Seoul
| | - Seok-Chul Yang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul
| | - Sang-Yun Song
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Hwasun-gun
| | - Young-June Jeon
- Department of Internal Medicine, School of Medicine, Keimyung University, Daegu
| | - Tae-Won Jang
- Department of Internal Medicine, College of Medicine, Kosin University, Busan
| | - Do-Jin Kim
- Division of Respiratory and Allergy Medicine, Soonchunhyang University Hospital, College of Medicine, Bucheon
| | - Seung Hun Jang
- Division of Pulmonary, Allergy & Critical Care Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang
| | - Sei-Hoon Yang
- Department of Internal Medicine, Wonkwang University Hospital, Iksan
| | - Min-Ki Lee
- Department of Internal Medicine, School of Medicine, Pusan National University, Busan
| | - Kwan-Ho Lee
- Department of Internal Medicine, School of Medicine, Yeungnam University, Daegu
| | - Hyang-Jeong Jo
- Department of Internal Medicine, Wonkwang University Hospital, Iksan
| | - Se-Jin Jang
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, College of Medicine, University of Ulsan, Seoul
| | - Young-Tae Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul
| | - Jae-Hwa Cho
- Center for Lung Cancer and Pulmonary Division, Department of Internal Medicine, Inha University Hospital, Inchon
| | - Yoo-Duk Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun-gun
| | - Hae-Seong Nam
- Center for Lung Cancer and Pulmonary Division, Department of Internal Medicine, Inha University Hospital, Inchon
| | - Hyun-Jung Kim
- Center for Lung Cancer and Pulmonary Division, Department of Internal Medicine, Inha University Hospital, Inchon
| | - Young Ju Suh
- Clinical Research Institute, School of Medicine, Inha University, Incheon, Korea
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Abstract
Uncontrolled invasive cancer cell migration is among the major challenges for the treatment and management of brain cancer. Although the genetic profiles of brain cancer cells have been well characterized, the relationship between the genetic mutations and the cells' mobility has not been clearly understood. In this study, using microfluidic devices that provide a wide range of physical confinements from 20 × 5 μm2 to 3 × 5 μm2 in cross sections, we studied the effect of physical confinement on the migratory capacity of cell lines with different types of mutations. Human glioblastoma and genetically modified mouse astrocytes were used. Human glioblastoma cells with EGFRvIII mutation were found to exhibit high degree of migratory capacity in narrow confinement. From mouse astrocytes, cells with triple mutations (p53-/- PTEN-/- BRAF) were found to exhibit the highest level of migratory capacity in narrow confinement compared to both double (p53-/- PTEN-/-) and single (p53-/-) mutant cells. Furthermore, when treating the triple mutant astrocytes with AZD-6244, an inhibitor of the RAF/MEK/ERK pathway, we found significant reduction in migration through the confined channels when compared to that of controls (83% decrease in 5 × 5 μm2 and 86% in 3 × 5 μm2 channels). Our data correlate genetic mutations from different cell lines to their motility in different degrees of confinement. Our results also suggest a potential therapeutic target such as BRAF oncogene for inhibition of brain cancer invasion.
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Affiliation(s)
- Loan Bui
- Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd ERB244, Arlington, TX, 76010, USA
| | - Sayem H Bhuiyan
- Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd ERB244, Arlington, TX, 76010, USA
| | - Alissa Hendrick
- Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd ERB244, Arlington, TX, 76010, USA
| | - Cheng-Jen Chuong
- Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd ERB244, Arlington, TX, 76010, USA
| | - Young-Tae Kim
- Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd ERB244, Arlington, TX, 76010, USA. .,Department of Urology, UT Southwestern Medical Center, Dallas, TX, USA.
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Cho S, Song JH, Kong M, Shin S, Kim YT, Park G, Park CG, Shin TJ, Myoung J, Jeong U. Fully Elastic Conductive Films from Viscoelastic Composites. ACS Appl Mater Interfaces 2017; 9:44096-44105. [PMID: 29181972 DOI: 10.1021/acsami.7b14504] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We investigated, for the first time, the conditions where a thermoplastic conductive composite can exhibit completely reversible stretchability at high elongational strains (ε = 1.8). We studied a composite of Au nanosheets and a polystyrene-block-polybutadiene-block-polystyrene block copolymer as an example. The composite had an outstandingly low sheet resistance (0.45 Ω/sq). We found that when a thin thermoplastic composite film is placed on a relatively thicker chemically cross-linked elastomer film, it can follow the reversible elastic behavior of the bottom elastomer. Such elasticity comes from the restoration of the block copolymer microstructure. The strong adhesion of the thermoplastic polymer to the metallic fillers is advantageous in the fabrication of mechanically robust, highly conductive, stretchable electrodes. The chemical stability of the Au composite was used to fabricate high luminescence, stretchable electrochemiluminescence displays with a conventional top-bottom electrode setup and with a horizontal electrode setup.
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Affiliation(s)
- Sunghwan Cho
- Department of Materials Science and Engineering, Yonsei University , 50, Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Jun Hyuk Song
- Department of Materials Science and Engineering, Yonsei University , 50, Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Minsik Kong
- Department of Materials Science and Engineering, Pohang University of Science and Technology , 77, Cheongam-Ro, Nam-Gu, Pohang 37673, Korea
| | - Sangbaie Shin
- Department of Materials Science and Engineering, Pohang University of Science and Technology , 77, Cheongam-Ro, Nam-Gu, Pohang 37673, Korea
| | - Young-Tae Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology , 77, Cheongam-Ro, Nam-Gu, Pohang 37673, Korea
| | - Gyeongbae Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology , 77, Cheongam-Ro, Nam-Gu, Pohang 37673, Korea
| | - Chan-Gyung Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology , 77, Cheongam-Ro, Nam-Gu, Pohang 37673, Korea
| | - Tae Joo Shin
- UNIST Central Research Facilities & School of National Science, Ulsan National Institute of Science and Technology , 50, UNIST-gil, Banyeon-ri, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea
| | - Jaemin Myoung
- Department of Materials Science and Engineering, Yonsei University , 50, Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Unyong Jeong
- Department of Materials Science and Engineering, Pohang University of Science and Technology , 77, Cheongam-Ro, Nam-Gu, Pohang 37673, Korea
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Song JH, Kim YT, Cho S, Song WJ, Moon S, Park CG, Park S, Myoung JM, Jeong U. Surface-Embedded Stretchable Electrodes by Direct Printing and their Uses to Fabricate Ultrathin Vibration Sensors and Circuits for 3D Structures. Adv Mater 2017; 29:1702625. [PMID: 28977713 DOI: 10.1002/adma.201702625] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/16/2017] [Indexed: 06/07/2023]
Abstract
Printing is one of the easy and quick ways to make a stretchable wearable electronics. Conventional printing methods deposit conductive materials "on" or "inside" a rubber substrate. The conductors made by such printing methods cannot be used as device electrodes because of the large surface topology, poor stretchability, or weak adhesion between the substrate and the conducting material. Here, a method is presented by which conductive materials are printed in the way of being surface-embedded in the rubber substrate; hence, the conductors can be widely used as device electrodes and circuits. The printing process involves a direct printing of a metal precursor solution in a block-copolymer rubber substrate and chemical reduction of the precursor into metal nanoparticles. The electrical conductivity and sensitivity to the mechanical deformation can be controlled by adjusting the number of printing operations. The fabrication of highly sensitive vibration sensors is thus presented, which can detect weak pulses and sound waves. In addition, this work takes advantage of the viscoelasticity of the composite conductor to fabricate highly conductive stretchable circuits for complicated 3D structures. The printed electrodes are also used to fabricate a stretchable electrochemiluminescence display.
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Affiliation(s)
- Jun Hyuk Song
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Young-Tae Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, 37673, Republic of Korea
| | - Sunghwan Cho
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Woo-Jin Song
- UNIST Central Research Facilities & School of National Science, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Banyeon-riEonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea
| | - Sungmin Moon
- Department of Materials Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, 37673, Republic of Korea
| | - Chan-Gyung Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, 37673, Republic of Korea
| | - Soojin Park
- UNIST Central Research Facilities & School of National Science, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Banyeon-riEonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea
| | - Jae Min Myoung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Unyong Jeong
- Department of Materials Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, 37673, Republic of Korea
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Mansur N, Raziul Hasan M, Kim YT, Iqbal SM. Functionalization of nanotextured substrates for enhanced identification of metastatic breast cancer cells. Nanotechnology 2017; 28:385101. [PMID: 28703710 DOI: 10.1088/1361-6528/aa7f84] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Metastasis is the major cause of low survival rates among cancer patients. Once cancer cells metastasize, it is extremely difficult to contain the disease. We report on a nanotextured platform for enhanced detection of metastatic cells. We captured metastatic (MDA-MDB-231) and non-metastatic (MCF-7) breast cancer cells on anti-EGFR aptamer modified plane and nanotextured substrates. Metastatic cells were seen to change their morphology at higher rates when captured on nanotextured substrates than on plane substrates. Analysis showed statistically different morphological behaviors of metastatic cells that were very pronounced on the nanotextured substrates. Several distance matrices were calculated to quantify the dissimilarity of cell shape change. Nanotexturing increased the dissimilarity of the metastatic cells and as a result the contrast between metastatic and non-metastatic cells increased. Jaccard distance measurements found that the shape change ratio of the non-metastatic and metastatic cells was enhanced from 1:1.01 to 1:1.81, going from plane to nanotextured substrates. The shape change ratio of the non-metastatic to metastatic cells improved from 1:1.48 to 1:2.19 for the Hausdorff distance and from 1:1.87 to 1:4.69 for the Mahalanobis distance after introducing nanotexture. Distance matrix analysis showed that nanotexture increased the shape change ratios of non-metastatic and metastatic cells. Hence, the detectability of metastatic cells increased. These calculated matrices provided clear and explicit measures to discriminate single cells for their metastatic state on functional nanotextured substrates.
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Affiliation(s)
- Nuzhat Mansur
- Nano-Bio Lab, University of Texas at Arlington, Arlington, Texas 76019, United States of America. Department of Electrical Engineering, University of Texas at Arlington, Arlington, Texas 76019, United States of America. Nanotechnology Research Center, University of Texas at Arlington, Arlington, Texas 76019, United States of America
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Batabyal S, Satpathy S, Bui L, Kim YT, Mohanty S, Bachoo R, Davé DP. Label-free optical detection of action potential in mammalian neurons. Biomed Opt Express 2017; 8:3700-3713. [PMID: 28856044 PMCID: PMC5560835 DOI: 10.1364/boe.8.003700] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/26/2017] [Accepted: 06/27/2017] [Indexed: 05/08/2023]
Abstract
We describe an optical technique for label-free detection of the action potential in cultured mammalian neurons. Induced morphological changes due to action potential propagation in neurons are optically interrogated with a phase sensitive interferometric technique. Optical recordings composed of signal pulses mirror the electrical spike train activity of individual neurons in a network. The optical pulses are transient nanoscale oscillatory changes in the optical path length of varying peak magnitude and temporal width. Exogenous application of glutamate to cortical neuronal cultures produced coincident increase in the electrical and optical activity; both were blocked by application of a Na-channel blocker, Tetrodotoxin. The observed transient change in optical path length in a single optical pulse is primarily due to physical fluctuations of the neuronal cell membrane mediated by a yet unknown electromechanical transduction phenomenon. Our analysis suggests a traveling surface wave in the neuronal cell membrane is responsible for the measured optical signal pulses.
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Affiliation(s)
- Subrata Batabyal
- Nanoscope Technologies, Arlington, TX, USA
- Nanoscope Technologies, Arlington, TX, USA
- Equal Contribution
| | - Sarmishtha Satpathy
- Department of Electrical Engineering, University of Texas at Arlington, TX, USA
- Equal Contribution
| | - Loan Bui
- Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Young-Tae Kim
- Department of Bioengineering, University of Texas at Arlington, TX, USA
| | | | - Robert Bachoo
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Digant P Davé
- Department of Bioengineering, University of Texas at Arlington, TX, USA
- Advance Imaging Research Centre, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Kim YH, Wolf C, Kim YT, Cho H, Kwon W, Do S, Sadhanala A, Park CG, Rhee SW, Im SH, Friend RH, Lee TW. Highly Efficient Light-Emitting Diodes of Colloidal Metal-Halide Perovskite Nanocrystals beyond Quantum Size. ACS Nano 2017; 11:6586-6593. [PMID: 28587467 DOI: 10.1021/acsnano.6b07617] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Colloidal metal-halide perovskite quantum dots (QDs) with a dimension less than the exciton Bohr diameter DB (quantum size regime) emerged as promising light emitters due to their spectrally narrow light, facile color tuning, and high photoluminescence quantum efficiency (PLQE). However, their size-sensitive emission wavelength and color purity and low electroluminescence efficiency are still challenging aspects. Here, we demonstrate highly efficient light-emitting diodes (LEDs) based on the colloidal perovskite nanocrystals (NCs) in a dimension > DB (regime beyond quantum size) by using a multifunctional buffer hole injection layer (Buf-HIL). The perovskite NCs with a dimension greater than DB show a size-irrespective high color purity and PLQE by managing the recombination of excitons occurring at surface traps and inside the NCs. The Buf-HIL composed of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS) and perfluorinated ionomer induces uniform perovskite particle films with complete film coverage and prevents exciton quenching at the PEDOT:PSS/perovskite particle film interface. With these strategies, we achieved a very high PLQE (∼60.5%) in compact perovskite particle films without any complex post-treatments and multilayers and a high current efficiency of 15.5 cd/A in the LEDs of colloidal perovskite NCs, even in a simplified structure, which is the highest efficiency to date in green LEDs that use colloidal organic-inorganic metal-halide perovskite nanoparticles including perovskite QDs and NCs. These results can help to guide development of various light-emitting optoelectronic applications based on perovskite NCs.
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Affiliation(s)
| | - Christoph Wolf
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyungbuk 790-784, Republic of Korea
| | - Young-Tae Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyungbuk 790-784, Republic of Korea
| | | | - Woosung Kwon
- Department of Chemical and Biological Engineering, Sookmyung Women's University , 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul 04310, Republic of Korea
| | - Sungan Do
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Aditya Sadhanala
- Cavendish Laboratory, University of Cambridge , JJ Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Chan Gyung Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyungbuk 790-784, Republic of Korea
| | - Shi-Woo Rhee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University , 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea
| | - Richard H Friend
- Cavendish Laboratory, University of Cambridge , JJ Thomson Avenue, Cambridge CB3 0HE, U.K
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Batabyal S, Kim YT, Mohanty S. Ultrafast laser-assisted spatially targeted optoporation into cortical axons and retinal cells in the eye. J Biomed Opt 2017; 22:60504. [PMID: 28662241 PMCID: PMC5490686 DOI: 10.1117/1.jbo.22.6.060504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 04/27/2017] [Accepted: 06/13/2017] [Indexed: 05/03/2023]
Abstract
Visualization and assessment of the cellular structure and function require localized delivery of the molecules into specific cells in restricted spatial regions of the tissue and may necessitate subcellular delivery and localization. Earlier, we have shown ultrafast near-infrared laser beam-assisted optoporation of actin-staining molecules into cortical neurons with single-cell resolution and high efficiency. However, diffusion of optoporated molecules in soma degrades toward the growth cone, leading to difficulties in visualization of the actin network in the growth cone in cases of long axons. Here, we demonstrate optoporation of impermeable molecules to functional cortical neurons by precise laser subaxotomy near the growth cone, leading to visualization of the actin network in the growth cone. Further, we demonstrate patterned delivery of impermeable molecules into targeted retinal cells in the rat eye. The development of optoporation as a minimally invasive approach to reliably deliver exogenous molecules into targeted axons and soma of retinal neurons in vivo will enable enhanced visualization of the structure and function of the retina.
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Affiliation(s)
| | - Young-Tae Kim
- University of Texas at Arlington, Department of Bioengineering, Texas, United States
| | - Samarendra Mohanty
- NanoScope Technologies LLC, Bedford, Texas, United States
- Address all correspondence to: Samarendra Mohanty, E-mail:
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Kim YT, Seol JB, Kim YH, Ahn HJ, Park CG. Correlation of Controllable Aggregation with Light-Emitting Property in Polymer Blend Optoelectronic Devices. Small 2017; 13:1602874. [PMID: 28160401 DOI: 10.1002/smll.201602874] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 11/22/2016] [Indexed: 06/06/2023]
Abstract
The control of solution-processed emitting layers in organic-based optoelectronic devices enables cost-effective processing and highly efficient properties. However, a solution-based protocol for emitter fabrication is highly complex, and the link between the device performance and internal nanoscale features as well as three associated fabricating parameters (e.g., the employed solvents, annealing temperatures, and molecular concentration) needs to be understood. Here, this study investigates the influence of the solution-processing parameters on the nanostructure-property relationship in light emitters that consist of iridium complexes doped in polymer. The boiling points and evaporation rates of the selected solvents govern the nanomorphology of molecular aggregation in the as-processed state, and the aggregation is either needle-like, spherical, or even a mixture of needles and spheres. Furthermore, a direct observation via in situ heating microscopy indicates that annealing of emitters containing a needle-type aggregation promotes the associated molecular transport, leading to a substantial reduction in the surface roughness. Consequently, a nearly threefold increase in the current efficiency of the device is induced. These findings have important implications for the tuning of the aggregation of iridium complexes for emitters used in the new evolution of high-performance organic-based optoelectronic devices.
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Affiliation(s)
- Young-Tae Kim
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Jae-Bok Seol
- National Institute for Nanomaterials Technology (NINT), Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Young-Hoon Kim
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Hyung-Joo Ahn
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Chan-Gyung Park
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
- National Institute for Nanomaterials Technology (NINT), Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
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33
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Kwak CM, Kim YT, Park CG, Seol JB. Understanding of Capping Effects on the Tip Shape Evolution and on the Atom Probe Data of Bulk LaAlO3 Using Transmission Electron Microscopy. Microsc Microanal 2017; 23:329-335. [PMID: 28215196 DOI: 10.1017/s1431927617000149] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two challenges exist in laser-assisted atom probe tomography (APT). First, a drastic decline in mass-resolving power is caused, not only by laser-induced thermal effects on the APT tips of bulk oxide materials, but also the associated asymmetric evaporation behavior; second, the field evaporation mechanisms of bulk oxide tips under laser illumination are still unclear due to the complex relations between laser pulse and oxide materials. In this study, both phenomena were investigated by depositing Ni- and Co-capping layers onto the bulk LaAlO3 tips, and using stepwise APT analysis with transmission electron microscopy (TEM) observation of the tip shapes. By employing the metallic capping, the heating at the surface of the oxide tips during APT analysis became more symmetrical, thereby enabling a high mass-resolving power in the mass spectrum. In addition, the stepwise microscopy technique visualized tip shape evolution during APT analysis, thereby accounting for evaporation sequences at the tip surface. The combination of "capping" and "stepwise APT with TEM," is applicable to any nonconductors; it provides a direct observation of tip shape evolution, allows determination of the field evaporation strength of oxides, and facilitates understanding of the effects of ultrafast laser illumination on an oxide tip.
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Affiliation(s)
- Chang-Min Kwak
- 1Department of Materials Science and Engineering,POSTECH,Pohang 790-784,South Korea
| | - Young-Tae Kim
- 1Department of Materials Science and Engineering,POSTECH,Pohang 790-784,South Korea
| | - Chan-Gyung Park
- 1Department of Materials Science and Engineering,POSTECH,Pohang 790-784,South Korea
| | - Jae-Bok Seol
- 2National Institute for Nanomaterials Technology (NINT),POSTECH,Pohang 790-784,South Korea
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Kim YT, Kim JW, Kim SH. Prealbumin changes in gynecologic patients undergoing intra-abdominal surgery. Int J Gynaecol Obstet 2017; 86:63-4. [PMID: 15207683 DOI: 10.1016/j.ijgo.2004.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2004] [Revised: 03/30/2004] [Accepted: 04/06/2004] [Indexed: 10/26/2022]
Affiliation(s)
- Y T Kim
- Department of Obstetrics and Gynecology, Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, South Korea.
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35
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Sugiyama T, Watarai K, Oda T, Kim YT, Oda H. Possible different roles of exercise in preventing vertebral and hip fractures. Osteoporos Int 2016; 27:3135-6. [PMID: 27166681 DOI: 10.1007/s00198-016-3628-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/02/2016] [Indexed: 10/21/2022]
Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - K Watarai
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - T Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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36
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Sugiyama T, Kono Y, Sekiguchi K, Kim YT, Oda H. An evidence-based perspective on warfarin and the growing skeleton. Osteoporos Int 2016; 27:2883-2884. [PMID: 27091741 DOI: 10.1007/s00198-016-3588-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 03/30/2016] [Indexed: 12/11/2022]
Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - Y Kono
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - K Sekiguchi
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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Sugiyama T, Kono Y, Sekiguchi K, Kim YT, Oda H. Full 24-month treatment course with daily teriparatide: a mechanistic insight. Osteoporos Int 2016; 27:2635-6. [PMID: 27154436 DOI: 10.1007/s00198-016-3630-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 05/02/2016] [Indexed: 12/18/2022]
Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - Y Kono
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - K Sekiguchi
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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38
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Xu W, Cho H, Kim YH, Kim YT, Wolf C, Park CG, Lee TW. Organometal Halide Perovskite Artificial Synapses. Adv Mater 2016; 28:5916-22. [PMID: 27167384 DOI: 10.1002/adma.201506363] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 04/17/2016] [Indexed: 05/08/2023]
Abstract
Organometal halide perovskite synaptic devices are fabricated; they emulate important working principles of a biological synapse, including excitatory postsynaptic current, paired-pulse facilitation, short-term plasticity, long-term plasticity, and spike-timing dependent plasticity. These properties originate from possible ion migration in the ion-rich perovskite matrix. This work has extensive applicability and practical significance in neuromorphic electronics.
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Affiliation(s)
- Wentao Xu
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Himchan Cho
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Young-Hoon Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Young-Tae Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Christoph Wolf
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Chan-Gyung Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Tae-Woo Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
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Xu W, Cho H, Kim YH, Kim YT, Wolf C, Park CG, Lee TW. Artificial Synapses: Organometal Halide Perovskite Artificial Synapses (Adv. Mater. 28/2016). Adv Mater 2016; 28:6019. [PMID: 27442971 DOI: 10.1002/adma.201670196] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A synapse-emulating electronic device based on organometal halide perovskite thin films is described by T.-W. Lee and co-workers on page 5916. The device successfully emulates important characteristics of a biological synapse. This work extends the application of organometal halide perovskites to bioinspired electronic devices, and contributes to the development of neuromorphic electronics.
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Affiliation(s)
- Wentao Xu
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Himchan Cho
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Young-Hoon Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Young-Tae Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Christoph Wolf
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Chan-Gyung Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
| | - Tae-Woo Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea
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40
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Bui L, Hendricks A, Wright J, Chuong CJ, Davé D, Bachoo R, Kim YT. Brain Tumor Genetic Modification Yields Increased Resistance to Paclitaxel in Physical Confinement. Sci Rep 2016; 6:26134. [PMID: 27184621 PMCID: PMC4869028 DOI: 10.1038/srep26134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 05/26/2015] [Accepted: 04/27/2016] [Indexed: 01/13/2023] Open
Abstract
Brain tumor cells remain highly resistant to radiation and chemotherapy, particularly malignant and secondary cancers. In this study, we utilized microchannel devices to examine the effect of a confined environment on the viability and drug resistance of the following brain cancer cell lines: primary cancers (glioblastoma multiforme and neuroblastoma), human brain cancer cell lines (D54 and D54-EGFRvIII), and genetically modified mouse astrocytes (wild type, p53-/-, p53-/- PTEN-/-, p53-/- Braf, and p53-/- PTEN-/- Braf). We found that loss of PTEN combined with Braf activation resulted in higher viability in narrow microchannels. In addition, Braf conferred increased resistance to the microtubule-stabilizing drug Taxol in narrow confinement. Similarly, survival of D54-EGFRvIII cells was unaffected following treatment with Taxol, whereas the viability of D54 cells was reduced by 75% under these conditions. Taken together, our data suggests key targets for anticancer drugs based on cellular genotypes and their specific survival phenotypes during confined migration.
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Affiliation(s)
- Loan Bui
- Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Alissa Hendricks
- Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Jamie Wright
- Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Cheng-Jen Chuong
- Department of Bioengineering, University of Texas at Arlington, TX, USA
| | - Digant Davé
- Department of Bioengineering, University of Texas at Arlington, TX, USA.,Advanced Imaging Research Center, UT Southwestern Medical Center, TX, USA
| | - Robert Bachoo
- Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, TX, USA
| | - Young-Tae Kim
- Department of Bioengineering, University of Texas at Arlington, TX, USA.,Department of Urology, UT Southwestern Medical Center, TX, USA
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Ali W, Ilyas A, Bui L, Sayles B, Hur Y, Kim YT, Iqbal SM. Differentiating Metastatic and Non-metastatic Tumor Cells from Their Translocation Profile through Solid-State Micropores. Langmuir 2016; 32:4924-4934. [PMID: 27035212 DOI: 10.1021/acs.langmuir.6b00016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Cancer treatment, care, and outcomes are much more effective if started at early stages of the disease. The presence of malignant cancer cells in human samples such as blood or biopsied tissue can be used to reduce overtreatment and underdiagnosis as well as for prognosis monitoring. Reliable quantification of metastatic tumor cells (MTCs) and non-metastatic tumor cells (NMTCs) from human samples can help in cancer staging as well. We report a simple, fast, and reliable approach to identify and quantify metastatic and non-metastatic cancer cells from whole biological samples in a point-of-care manner. The metastatic (MDA MB-231) and non-metastatic (MCF7) breast cancer cells were pushed through a solid-state micropore made in a 200 nm thin SiO2 membrane while measuring current across the micropore. The cells generated very distinctive translocation profiles. The translocation differences stemmed from their peculiar mechanophysical properties. The detection efficiency of the device for each type of tumor cells was ∼75%. MTCs showed faster translocation (36%) and 34% less pore blockage than NMTCs. The micropore approach is simple, exact, and quantitative for metastatic cell detection in a lab-on-a chip setting, without the need for any preprocessing of the sample.
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Affiliation(s)
| | | | | | | | | | - Young-Tae Kim
- Department of Urology, University of Texas Southwestern Medical Center at Dallas , Dallas, Texas 75235, United States
| | - Samir M Iqbal
- Department of Urology, University of Texas Southwestern Medical Center at Dallas , Dallas, Texas 75235, United States
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42
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Ali W, Moghaddam FJ, Raza MU, Bui L, Sayles B, Kim YT, Iqbal SM. Electromechanical transducer for rapid detection, discrimination and quantification of lung cancer cells. Nanotechnology 2016; 27:195101. [PMID: 27023745 DOI: 10.1088/0957-4484/27/19/195101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tumor cells are malignant derivatives of normal cells. There are characteristic differences in the mechanophysical properties of normal and tumor cells, and these differences stem from the changes that occur in the cell cytoskeleton during cancer progression. There is a need for viable whole blood processing techniques for rapid and reliable tumor cell detection that do not require tagging. Micropore biosensors have previously been used to differentiate tumor cells from normal cells and we have used a micropore-based electromechanical transducer to differentiate one type of tumor cells from the other types. This device generated electrical signals that were characteristic of the cell properties. Three non-small cell lung cancer (NSCLC) cell lines, NCl-H1155, A549 and NCI-H460, were successfully differentiated. NCI-H1155, due to their comparatively smaller size, were found to be the quickest in translocating through the micropore. Their translocation through a 15 μm micropore caused electrical pulses with an average translocation time of 101 ± 9.4 μs and an average peak amplitude of 3.71 ± 0.42 μA, whereas translocation of A549 and NCI-H460 caused pulses with average translocation times of 126 ± 17.9 μs and 148 ± 13.7 μs and average peak amplitudes of 4.58 ± 0.61 μA and 5.27 ± 0.66 μA, respectively. This transformation of the differences in cell properties into differences in the electrical profiles (i.e. the differences in peak amplitudes and translocation times) with this electromechanical transducer is a quantitative way to differentiate these lung cancer cells. The solid-state micropore device processed whole biological samples without any pre-processing requirements and is thus ideal for point-of-care applications.
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Affiliation(s)
- Waqas Ali
- Nano-Bio Lab, University of Texas at Arlington, Arlington, Texas 76019, USA. Department of Electrical Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA. Nanotechnology Research Center, University of Texas at Arlington, Arlington, Texas 76019, USA
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Sugiyama T, Watarai K, Oda T, Kim YT, Oda H. Exercise for the skeleton in postmenopausal women: fundamental rules of mechanical strain-related stimulus. Osteoporos Int 2016; 27:1927-8. [PMID: 26556732 DOI: 10.1007/s00198-015-3407-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 11/04/2015] [Indexed: 01/20/2023]
Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - K Watarai
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - T Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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44
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Sugiyama T, Watarai K, Oda T, Kim YT, Oda H. Proton pump inhibitors and fracture: they impair bone quality and increase fall risk? Osteoporos Int 2016; 27:1675-1676. [PMID: 26860500 DOI: 10.1007/s00198-016-3509-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 01/28/2016] [Indexed: 11/24/2022]
Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - K Watarai
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - T Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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Sugiyama T, Kim YT, Oda H. Both falling and bone fragility should be targeted to prevent hip fracture in older adults. Osteoporos Int 2016; 27:1277-1278. [PMID: 26493813 DOI: 10.1007/s00198-015-3373-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/15/2015] [Indexed: 11/26/2022]
Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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Kang MC, Kang N, Kim SY, Lima IS, Ko SC, Kim YT, Kim YB, Jeung HD, Choi KS, Jeon YJ. Popular edible seaweed, Gelidium amansii prevents against diet-induced obesity. Food Chem Toxicol 2016; 90:181-7. [PMID: 26911551 DOI: 10.1016/j.fct.2016.02.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [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: 10/28/2015] [Revised: 02/15/2016] [Accepted: 02/16/2016] [Indexed: 02/03/2023]
Abstract
The popular edible seaweed, Gelidium amansii is broadly used as food worldwide. To determine whether G. amansii extract (GAE) has protective effects on obesity, mice fed a high-fat diet (HFD) treated with GAE (1 and 3 %) were studied. After 12 weeks of GAE treatment, body weight was greatly decreased in mice fed a high-fat diet. This effect could be due to decreased adipogenesis, as evidenced by the fact that GAE suppressed adipogenic gene expression in adipocytes. In addition, blood glucose and serum insulin levels were reduced by GAE treatment in mice fed a high-fat diet, suggesting improvement in glucose metabolism. GAE supplementation also led to a significant decrease in total cholesterol and triglyceride levels. These data are further confirmed by H&E staining. Our findings indicate that Gelidium amansii prevents against the development of diet-induced obesity, and further implicate that GAE supplementation could be the therapeutical option for treatment of metabolic disorder such as obesity.
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Affiliation(s)
- Min-Cheol Kang
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea; Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Nalae Kang
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Seo-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Inês S Lima
- Centro de Estudos de Doenças Crónicas CEDOC, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Seok-Chun Ko
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan 608-737, Republic of Korea; Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan 608-737, Republic of Korea
| | - Young-Tae Kim
- Department of Food Science and Biotechnology, Kunsan National University, Gunsan 573-701, Republic of Korea
| | - Young-Bum Kim
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Hee-Do Jeung
- Tidal Flat Research Center, West Sea Fisheries Research Institute, National Institute of Fisheries Science (NIFS), 11 Seollim-gill, 54014 Gunsan, Republic of Korea
| | - Kwang-Sik Choi
- School of Marine Biomedical Science, Jeju National University, 102 Jejudaehakno, Jeju 690-756, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea.
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Affiliation(s)
- Kyu-Jung Cho
- Department of Orthopedic Surgery, Inha University School of Medicine, Incheon, Korea
| | - Young-Tae Kim
- Department of Orthopedic Surgery, Inha University School of Medicine, Incheon, Korea
| | - Beomho Seo
- Department of Orthopedic Surgery, Inha University School of Medicine, Incheon, Korea
| | - Joongsub Shin
- Department of Orthopedic Surgery, Inha University School of Medicine, Incheon, Korea
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Affiliation(s)
- T Sugiyama
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan.
| | - T Torio
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - T Miyajima
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - Y T Kim
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
| | - H Oda
- Department of Orthopaedic Surgery, Saitama Medical University, 38 Morohongo, Moroyama, Saitama, 350-0495, Japan
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Kim EA, Lee SH, Lee JH, Kang N, Oh JY, Cha SH, Ahn G, Ko SC, Fernando SP, Kim SY, Park SJ, Kim YT, Jeon YJ. Correction: A marine algal polyphenol, dieckol, attenuates blood glucose levels by Akt pathway in alloxan induced hyperglycemia zebrafish model. RSC Adv 2016. [DOI: 10.1039/c6ra90084d] [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
Correction for ‘A marine algal polyphenol, dieckol, attenuates blood glucose levels by Akt pathway in alloxan induced hyperglycemia zebrafish model’ by Eun-A Kim et al., RSC Adv., 2016, 6, 78570–78575.
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Kim EA, Lee SH, Lee JH, Kang N, Oh JY, Seun-heui SH, Ahn G, Ko SC, Fernando SP, Kim SY, Park SJ, Kim YT, Jeon YJ. A marine algal polyphenol, dieckol, attenuates blood glucose levels by Akt pathway in alloxan induced hyperglycemia zebrafish model. RSC Adv 2016. [DOI: 10.1039/c6ra12724j] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of the administering of DK (dieckol) isolated from Ecklonia cava on the blood glucose level in hyperglycemia zebrafish. Thus, hyperglycemia zebrafish could be efficiently used to evaluate a wide range of anti-diabetic activities.
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