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사람들

Stem Cell and Regenerative
Biology Graduate Program

임대식

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Prof Info.

임대식Dae-Sik Lim

생명과학기술대학

줄기세포 및 분화연구 발생 및 질환 모델 조직공학 및 오가노이드

Lab Info.

Hippo 신호경로는 세포 증식과 사멸을 조절하는 데 있어 매우 중요한 발생학적 프로그램입니다.
mammalian Hippo 신호경로는 성체 줄기 및 전구세포의 증식을 조절함으로써 장기 크기 조절과 재생에 핵심적인 역할을 수행합니다.
지난 수십년간 수많은 연구들이 Hippo- YAP/TAZ 신호경로의 생리학적 역할을 이해하고, 핵심 상위 조절자를 찾고, YAP/TAZ의 주요 타겟 유전자들을 밝히는 데에 집중해왔습니다. 하지만 여전히 해결되지 않은 질문들이 다수 존재합니다. 따라서 우리는 다음을 목표로 연구를 진행하여 Hippo-YAP/TAZ 신호경로에 대한 이해를 더욱 넓히고자 합니다.
1) 세포 가소성(cell plasticity) 조절자로서 YAP/TAZ의 역할 규명: 우리는 Hippo-YAP/TAZ 신호경로에 대한 knock-out 마우스 라인을 이용하여, 병리·생리학적 맥락에서 신호경로 구성요소들의 기능을 확인하고자 합니다. 특히, YAP/TAZ가 활성화되어 세포가소성을 조절하는 것으로 알려진 조직재생과정에 주안점을 두고 있습니다.
2) 암과 관련된 YAP/TAZ의 역할 규명: 다양한 암에서 Hippo-YAP/TAZ 신호경로의 비정상적인 조절이 관찰됩니다. 암이 발달하고 진행되는 과정에서 YAP/TAZ의 기능을 밝힘으로써, 암 발생 메커니즘을 보다 깊이 이해하고 새로운 치료 전략을 수립하는 데에 기여할 수 있습니다.
3) Hippo-YAP/TAZ 신호경로의 조절 메커니즘 규명: Hippo-YAP/TAZ 신호경로의 수많은 상위 및 하위 조절인자들이 밝혀졌지만, 이 인자들로는 설명되지 않는 현상과 질문들이 다수 존재합니다. 이를 설명하기 위해, 더 많은 인자들과 새로운 조절 기작을 발견하고자 합니다.

The Hippo pathway signaling network is an important developmental program for controlling cell proliferation and apoptosis.
The Hippo pathway in mammals limits the growth of adult stem and progenitor cells, which is a key part of controlling organ size and regeneration. In the past decades, numerous studies have focused on understanding the physiological roles of the Hippo-YAP/TAZ pathway, identifying its core regulators and upstream signals, and characterizing crucial target genes of YAP/TAZ.
 However, many unanswered questions still remain. Thus, we aspire to broaden our understanding of the Hippo-Yap/Taz pathway by unveiling these questions.
We are conducting research with the following crucial and compelling objectives:
1) to elucidate the role of Yap/Taz in conferring cellular plasticity. Utilizing the knock-out mouse lines for Hippo-Yap/Taz pathway components, we aim to ascertain the functions of each component within pathophysiological contexts. Notably, tissue regeneration processes wherein Yap/Taz are predominantly activated constitute a primary focus of our investigation.
2) to delineate the role of Yap/Taz in cancer. The dysregulation of Yap/Taz has been implicated in various cancers. Consequently, elucidating the role of Yap/Taz in cancer holds promise for advancing our understanding of the mechanisms underlying cancer development and contributing to therapeutic interventions.
3) the regulatory mechanisms of the Hippo-Yap/Taz pathway must be elucidated. While the up- and down-stream regulation of the Hippo-Yap/Taz pathway has been unveiled over the past decades, unanswered questions persist. We aim to identify unidentified factors and new regulatory mechanisms to address them.

Profile.

  • 2024.3 - 현재 KT Endowed Chair Professor, Department of Biological Sciences, KAIST
  • 2022.3 - 현재 Director, KAIST Stem Cell Center, KAIST
  • 2020.6 - 현재 Director, National Creative Research Initiatives Center For Cell Plasticity, KAIST
  • 2010.3 - 현재 Professor, Department of Biological Sciences, KAIST
  • 2017.9 - 2019.5 Vice Minister for Science, Technology and Innovation, Ministry of Science and ICT, Korea
  • 2016.3 - 현재 Member of the Korean Academy of Science and Technology
  • 2014.3 - 2016.2 Chair Professor, Department of Biological Sciences, KAIST
  • 2010.5 - 2017.9 Director, National Creative Research Initiatives Center for Hippo Signaling Network for Cell Division and Differentiation, KAIST
  • 2004.9 - 2010.2 Associate Professor, Department of Biological Sciences, KAIST
  • 2002.7 - 2004.8 Assistant Professor, Department of Biological Sciences, KAIST
  • 2000.9 - 2002.6 Assistant Professor, Graduate School of Life Science and Biotechnology, Korea University

Education.

  • 1998.7 - 2000.8 Postdoctoral Fellow, Department of Hematology/Oncology St. Jude Children’s Research Hospital
  • 1996.12 - 1998.7 Postdoctoral Fellow, Oncology Center, School of Medicine Johns Hopkins Hospital
  • 1992.9 - 1996.9 Ph.D. Student, Genes and Development Program, The University of Texas Houston GSBS & MD Anderson Cancer Center
  • 1988.3 - 1992.2 M.S. student at the Department of Microbiology, Seoul National University, Korea
  • 1984.3 - 1988.2 Undergraduate student at the Department of Microbiology, Seoul National University, Korea

Main Research areas.

  • Role of YAP/TAZ in conferring cellular plasticity
  • Role of YAP/TAZ in cancer
  • Mechanisms governing the regulation of the Hippo-YAP/TAZ signaling pathway
  • Identification of novel molecules that affect YAP/TAZ activity

Main Publications.

  • Choi and Kang et al., Hippo-YAP/TAZ signalling coordinates adipose plasticity and energy balance by uncoupling leptin expression from fat mass., Nat Metab., 2024
  • Ku, B., Eisenbarth, D., et al., PRMT1 promotes pancreatic cancer development and resistance to chemotherapy. Cell Reports Medicine, 101461. https://doi.org/10.1016/j.xcrm.2024.101461 2024
  • Jeon and Choi et al., Airway secretory cell fate conversion via YAP- mTORC1-dependent essential amino acid metabolism., EMBO J., 2022