1. Research Areas
Cell-Matrix Interaction
¼¼Æ÷¿Í ¼¼Æ÷¿Ü±âÁú °áÇÕÀÇ Áß½ÉÀûÀÎ ¿ªÇÒÀ» Çϰí ÀÖ´Â integrin ´Ü¹éÁúÀº ¼¼Æ÷³»ºÎÀÇ ½ÅÈ£Àü´Þ¿¡ µû¶ó ¼¼Æ÷¿Ü±âÁú°úÀÇ affinity°¡ Á¶ÀýµÈ´Ù. º» ½ÇÇè½Ç¿¡¼´Â integrinÀÇ affinity¸¦ Á¶ÀýÇÏ´Â Á¶Àý ´Ü¹éÁúÀÇ µ¿Á¤ ¹× ±×µéÀÇ Á¶Àý ±âÀÛÀ» ¿¬±¸Çϰí ÀÖÀ¸¸ç, ³ª¾Æ°¡ ÀÌµé ´Ü¹éÁúÀÇ ±â´É Á¶ÀýÀ» ÅëÇÑ cell-matrix interaction ÀúÇØ ¹æ¹ýÀ» ¿¬±¸Çϰí ÀÖ´Ù.
Integrins play a central role in cell-extracellular matrix (ECM) interactions, and their affinity for the ECM is modulated by intracellular signaling. Our laboratory focuses on identifying the regulatory proteins that control integrin affinity and elucidating their underlying mechanisms. Furthermore, we are exploring strategies to inhibit cell-matrix interactions by modulating the functions of these regulatory proteins.
Transmembrane Signaling
Integrin, receptor tyrosine kinase, ¶ÇÇÑ G protein coupled receptor¿Í °°Àº ¸·´Ü¹éÁúµé (transmembrane proteins)Àº ¼¼Æ÷¸·À» °æ°è·Î ¼¼Æ÷ÀÇ ¾È°ú ¹ÛÀÇ È¯°æ º¯È¸¦ ÀνÄÇÏ¿© ¹Ý´ëÆíÀ¸·Î ±× ½ÅÈ£¸¦ Àü´ÞÇÏ´Â ¿ªÇÒÀ» ¼öÇàÇϰí ÀÖ´Ù. ÀÌ·¯ÇÑ ½ÅÈ£Àü´Þ°úÁ¤ Áß¿¡¼´Â ¼¼Æ÷¸·¿¡ »ðÀԵǾî ÀÖ´Â transmembrane domainÀº ¼¼Æ÷¸·¿¡¼ÀÇ À§»óÇÐÀûÀÎ º¯È³ª ¶Ç´Â ÀÌµé ¼·Î°£ÀÇ °áÇÕÀ» ÅëÇØ Àû±ØÀûÀ¸·Î ½ÅÈ£Àü´Þ¿¡ °ü¿©ÇÑ´Ù´Â °ÍÀÌ ÃÖ±Ù ¾Ë·ÁÁö°í ÀÖÀ¸¸ç, º» ½ÇÇè½Ç¿¡¼´Â nanodisc µîÀÇ Ãֽбâ¼úÀ» »ç¿ëÇÏ¿© ÀÌ·¯ÇÑ ½ÅÈ£Àü´Þ °úÁ¤¿¡¼ transmembrane domainÀÇ ¿ªÇÒÀ» ¿¬±¸Çϰí ÀÖ´Ù.
Transmembrane proteins, such as integrins, receptor tyrosine kinases, and G protein-coupled receptors, function to sense environmental changes across the plasma membrane and transmit signals to the opposite side. Recently, it has become evident that the transmembrane domains embedded in the lipid bilayer actively participate in signal transduction through topological changes or intermolecular interactions. Our lab employs cutting-edge technologies like nanodiscs to investigate the precise roles of transmembrane domains in these signaling processes.
Extracellular Proteolysis
º» ½ÇÇè½Ç¿¡¼´Â ¼¼Æ÷¿Ü±âÁúÀÇ Àç¹è¿À» ÅëÇÑ Á¶Á÷Àç»ýÀ̳ª ¼¼Æ÷ÀÇ À̵¿¼º, ¼ºÀåÁ¶ÀýÀÎÀÚÀÇ Á¶Àý¿¡ ÇʼöÀûÀÎ ¿ªÇÒÀ» Çϰí ÀÖ´Â ¼¼Æ÷¸· ´Ü¹éÁú ºÐÇØ È¿¼Ò¿¡ °üÇÑ ¿¬±¸¸¦ ¼öÇàÇϰí ÀÖÀ¸¸ç, ƯÈ÷ ¼¼Æ÷¿ÜºÎ¿¡¼ÀÇ ´Ü¹éÁú ºÐÇØ¿Í ¼¼Æ÷ÀÇ ºÎÂø/À̵¿¼º °£ÀÇ »óÈ£ÀÛ¿ë¿¡ ´ëÇÑ ¿¬±¸¸¦ ¼öÇàÇϰí ÀÖ´Ù.
Our laboratory investigates cell surface proteases, which are essential for tissue regeneration through ECM remodeling, cell motility, and the regulation of growth factors. We particularly focus on the interplay between extracellular proteolysis and cell adhesion/migration.
2. Target Diseases & Pathological Models
Thrombosis
Thrombosis (Ç÷ÀüÇü¼º)¶õ Ç÷¾× ³» Á¸ÀçÇÏ´Â Ç÷¼ÒÆÇ°ú fibrinogen°úÀÇ °áÇÕÀ¸·Î Ç÷ÀüÀ» »ý¼ºÇÏ´Â °úÁ¤À¸·Î »óó ¹ß»ý ½Ã ÁöÇ÷ ÀÛ¿ëÀ» ÇÑ´Ù. ±×·¯³ª, Ç÷°ü ³»¿¡ Ç÷ÀüÀÌ ºñÁ¤»óÀûÀ¸·Î ¹ß»ýÇÏ°Ô µÇ¸é ³úÇ÷°üÁúȯÀ̳ª ½ÉÇ÷°üÁúȯÀÇ ¿øÀÎÀÌ µÇ¸ç, ÀÌ´Â ¿ì¸®³ª¶óÀÇ Àüü»ç¸Á ¿øÀÎÀÇ ¨ù¸¦ Â÷ÁöÇϰí ÀÖ´Ù.
Thrombosis is the process of blood clot formation via the binding of platelets to fibrinogen, which serves to achieve hemostasis upon injury. However, abnormal thrombus formation within blood vessels leads to cerebrovascular or cardiovascular diseases, which account for one-fourth of all deaths in South Korea.
Angiogenesis
Angiogenesis (½Å»ýÇ÷°üÇü¼º)´Â ÀÌ¹Ì Á¸ÀçÇÏ´Â Ç÷°üÀ¸·ÎºÎÅÍ »õ·Î¿î Ç÷°üÀÌ ¸¸µé¾îÁö´Â °úÁ¤À¸·Î, »ê¼Ò³ª ¿µ¾ç¼ÒÀÇ °ø±Þ¿¡ ºñÇØ ºü¸£°Ô ÀÚ¶ó´Â »ê¼Ò°áÇÌ»óÅÂÀÇ ¾Ï¼¼Æ÷¿¡¼ ºÐºñµÇ´Â ½Å»ýÇ÷°üÇü¼º À¯µµÀÎÀÚ¿¡ ÀÇÇØ À¯µµµÈ´Ù. ÀÌ °úÁ¤À» ¾ïÁ¦ÇÏ¸é ¿©·¯ Á¾·ùÀÇ ¾Ï¼¼Æ÷ÀÇ ¼ºÀåÀ» ÀúÇØÇÒ ¼ö ÀÖ´Â universal therapy°¡ °¡´ÉÇÒ °ÍÀ¸·Î ¿¹ÃøµÇ¾î ¿Ô´Ù.
Angiogenesis is the formation of new blood vessels from pre-existing ones. It is often induced by angiogenic factors secreted from hypoxic cancer cells that rapidly outgrow their oxygen and nutrient supplies. Inhibiting this process has been anticipated to offer a universal therapy capable of hindering the growth of various types of cancer cells.
Metastasis
Metastasis (ÀüÀÌ), ƯÈ÷ ¾ÏÀÇ ÀüÀÌ´Â, ¾Ï¼¼Æ÷°¡ °íÇü¾ÏÀ¸·Î ºÎÅÍ ¶³¾îÁ® ³ª¿Í ±âÀú¸· (basement membrane)À» ¶Õ°í Ç÷°üÀ¸·Î ħÅõÇÏ¿© ´Ù¸¥ Àå±â·Î À̵¿ ¹× ¼ºÀåÇÏ´Â °úÁ¤ÀÌ´Ù. ¾ÏÀÇ ÀüÀÌ ½Ã¿¡´Â ´Ù¾çÇÑ ¿ÜºÎ ½ÅÈ£¿¡ ÀÇÇÑ ¾Ï¼¼Æ÷ÀÇ À̵¿¼º ȹµæ, ¼¼Æ÷¿Ü±âÁú ºÐÇØ, ¼¼Æ÷ÀÇ ºÎÂø µîÀÇ »ý¹°ÇÐÀû Çö»óÀÌ ÇÊ¿äÇÑ °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù.
Metastasis, specifically cancer metastasis, is the process by which cancer cells detach from a solid tumor, penetrate the basement membrane, enter the bloodstream, and subsequently migrate to and proliferate in other organs. It is well established that biological events such as the acquisition of cell motility, ECM degradation, and cell adhesion?triggered by diverse external signals?are requisite for cancer metastasis.
3. Research Objectives
Understand the pathophysiology of the diseases
º» ½ÇÇè½ÇÀº thrombosis, angiogensis, metastasisÀÇ in vitro Áúº´ ¸ðµ¨ ¹× µ¿¹°½ÇÇè¸ðµ¨À» ±¸ÃàÇϰí, ÀÌ·¯ÇÑ Àΰ£ Áúº´ ¸ðµ¨¿¡¼ÀÇ cell-matrix interaction, transmembrane signaling, proteolysis µîÀÇ Á߿伺À» ¿¬±¸Çϰí ÀÖÀ¸¸ç, ÀÌ·¯ÇÑ ±âÃÊ ¿¬±¸¸¦ ÅëÇØ Àΰ£ Áúº´ÀÇ ±âÀÛ ¹× Ä¡·á ¹æ¾È¿¡ ´ëÇÑ »õ·Î¿î ¹æ¹ýÀ» Á¦½ÃÇÏ´Â °ÍÀ» ¸ñÇ¥·Î ÇÑ´Ù.
We establish in vitro and in vivo animal models for thrombosis, angiogenesis, and metastasis. By studying the significance of cell-matrix interactions, transmembrane signaling, and proteolysis within these human disease models, we aim to propose novel insights into the pathogenic mechanisms and develop new therapeutic strategies through our basic research.
Provide a better therapeutic way for the patients
º» ½ÇÇè½Ç¿¡¼´Â ±âÃÊ¿¬±¸ÀÇ ¼º°ú·Î ¹àÇôÁø ¿©·¯ °úÇÐÀû »ç½ÇµéÀ» ÀÀ¿ëÇÏ¿© ±âÁ¸ÀÇ ¹æ¹ýº¸´Ù ¾ÈÀüÇϰí È¿°úÀûÀ¸·Î Áúº´À» ¾ïÁ¦ÇÒ ¼ö ÀÖ´Â ¼±µµ¹°ÁúÀ» ½ÇÁ¦·Î È®º¸ÇÏ´Â °Í ¶ÇÇÑ ¸ñÇ¥·Î Çϰí ÀÖ´Ù. À̸¦ À§ÇØ º» ½ÇÇè½ÇÀº º»±³ Àǰú´ëÇÐ, °æºÏ´ë ¾àǰÁ¦Á¶ÈÇÐ ¿¬±¸½Ç ¹× °ü·Ã±â¾÷°ú ±ä¹ÐÇÑ °øµ¿¿¬±¸¸¦ ÁøÇà ÁßÀÌ´Ù.
Applying the scientific findings obtained from our basic research, we also aim to secure actual lead compounds that can suppress these diseases more safely and effectively than conventional methods. To achieve this, our laboratory is conducting close collaborative research with the Korea University College of Medicine, the Medicinal Chemistry Laboratory at Kyungpook National University, and related biotechnology companies.
Train graduate students as independent researchers
º» ½ÇÇè½ÇÀÇ ´ëÇпø»ýµéÀº °¢ÀÚÀÇ ¿¬±¸ÁÖÁ¦¿¡ ´ëÇÑ ½ÉµµÀÖ´Â ¿¬±¸¿Í ´õºÒ¾î, °¢ ¿¬±¸¼º°ú¸¦ ½ÇÇè½Ç¿¡¼ ÁøÇàµÇ´Â ·¦ ¼¼¹Ì³ª »Ó ¾Æ´Ï¶ó ¿©·¯ ±¹³»¿Ü ¿¬±¸ÀÚµé°úÀÇ ¹ÌÆÃ ¹× À̸ÞÀÏÀ» ÅëÇØ °øÀ¯Çϰí ÇØ´ç ¿¬±¸ÁÖÁ¦¿¡ ´ëÇØ Åä·ÐÇÔÀ¸·Î½á °¢ÀÚÀÇ ¿¬±¸¸¦ ¹ßÀü½ÃÄÑ ³ª°¡°í ÀÖ´Ù. ÀÌ·¯ÇÑ ÀÏ·ÃÀÇ ¿¬±¸È°µ¿µéÀ» Áö¿øÇÏ¿© ´ëÇпø»ýµéÀÌ °¢ ºÐ¾ßÀÇ µ¶¸³ÀûÀ̰í âÀÇÀûÀÎ ¿¬±¸ÀÚ·Î ¼ºÀåÇÒ ¼ö ÀÖµµ·Ï ÇÏ´Â °ÍÀÌ º» ½ÇÇè½ÇÀÇ °¡Àå Å« ¸ñÀûÀÌ´Ù.
Graduate students in our lab not only pursue in-depth studies on their respective topics but also advance their research by sharing and discussing their findings. This takes place through lab seminars as well as meetings and email correspondence with various domestic and international researchers. Our ultimate goal is to support these research activities, empowering our graduate students to grow into independent, creative scientists in their fields.