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Microfluidic Device for Analysis of Lymphatic Breast Cancer Metastasis by Interleukin 6
Sieun PARK,Hyeon-Yeol CHO,Jin-Ha CHOI,Jeong-Woo CHOI 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10
Cancer metastasis is the primary reason of tumor-associated deaths. By replicating the precise microenvironment of the lymphatic metastasis in vitro, a microfluidic chip containing lymph vessel-blood vessel-tissue (LBT) channels was fabricated to provide useful platform for understanding cancer cell migration, colonization, and invasion. The middle of the channels were filled with collagen-based hydrogel to mimick the tissues in vivo. HUVECs and HLECs were cultivated to form a layer on the side of the hydrogel in the LBT chip. Using this LBT chip, the inflammatory cytokine, interleukin 6 (IL-6), and their communication in the lymphatic metastasis were successfully confirmed. The IL-6 treatment to various subtypes of breast cancer cells induced epithelial-mesenchymal transition (EMT) and enhanced the tissue invasion ability (8-fold). Furthermore, the human vein endothelial cells growed toward the lymph-vessel channel and the VEGF secretion from human lymphatic endothelial cells was observed after IL-6 treatment. This fabricated LBT chip can be applied to study the intercellular communication as well as the tumor microenvironment under the variety of extracellular stimuli such as inflammatory cytokines, hypoxia, nutrient deficiency, and stromal reactions.
적대적 신경망 기반 치과용 파노라마 영상의 방사선 선량 감소 방법
최민혁(MinHyuk Choi),강세룡(SaRyong Kang),유지용(Jiyong Yoo),최시은(Sieun Choi),전보성(Bosoung Jeoun),양수(Su Yang),천소영(Soyoung Chun),김진(Jin Kim),김다엘(DaEl Kim),이원진(Wonjin Yi) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
Dental panoramic radiography was widely used to screen the patient. Although the dose of panoramic radiography was lower than that of CT, it was higher than other medical imaging modality, such as intraoral x-ray and cephalometry. In this paper, we reconstructed the panoramic radiography from sparse view image using GAN for lower dose. Total 473 panoramic images were used to train the GAN model and test it. GAN could be reproduce the anatomy of teeth with 0.69±0.03 of structural similarity index.