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Lindy O¡¯Clair, Katherine Artymovich, Meagan Roddy and Daniel M. Appledorn
Essen BioScience - Ann Arbor, Michigan

¡Ø IncuCyte Live-Cell Analysis System À» °³¹ßÇÑ Essen BioScience ´Â ¼ö³âÀü¿¡ Sartorius »çÀÇ ÀÏ¿øÀÌ µÇ¾ú½À´Ï´Ù.


Introduction

IncuCyte Live-Cell Analysis System À» ÀÌ¿ëÇϸé CO2 incubator¾È¿¡¼­, Çö¹Ì°æÀ» ÀÌ¿ëÇÏ¿©, »ì¾ÆÀÖ´Â ¼¼Æ÷¸¦ Á÷Á¢ÀûÀ¸·Î, Á¤ÇØÁø ½Ã°£ °£°ÝÀ¸·Î, °è¼ÓÇؼ­ ¼¼Æ÷º¯È­¸¦ ÃÔ¿µÇÏ¿©, Á¤·®ÀûÀ¸·Î ¼¼Æ÷µ¶¼º Çö»óÀ» ÃøÁ¤ÇÒ ¼ö Àִµ¥ IncuCyte CytoTox Reagents ¸¦ ÀÌ¿ëÇÏ¿© cytotoxicity ¸¦ ÃøÁ¤ÇÑ´Ù.

¼¼Æ÷°¡ µ¶¼º À¯¹ß¹°Áú¿¡ ³ëÃâµÇ¸é ¿©·¯°¡Áö º¹ÀâÇÑ »ýÈ­ÇÐÀû º¯È­°¡ ÀϾÁö¸¸ ±× Áß °¡Àå °øÅëÀûÀÎ Çö»óÀÌ cell membrane ÀÌ ÇüÅÂÀû ±â´ÉÀûÀ¸·Î ÈѼյǴ °Í, Áï cell membrane integrity ¸¦ ÀÒ°Ô µÇ´Â °ÍÀÌ´Ù.

IncuCyte CytoTox Reagents ´Â »ì¾ÆÀÖ´Â cell membrane À» Åë°úÇÏÁö ¸øÇÏÁö¸¸ ¼¼Æ÷°¡ plasma membrane integrity ¸¦ ÀÒ°Ô µÇ¸é ¼¼Æ÷¹è¾ç¾×¿¡ ÀÖ´Â IncuCyte CytoTox Reagents ´Â ¼¼Æ÷¸·°ú ÇÙ¸·À» Åë°úÇÏ¿© ÇÙ¼ÓÀÇ dsDNA ¿Í °áÇÕÇÏ°Ô µÈ´Ù. IncuCyte CytoTox Reagents ´Â DNA ¿Í °áÇÕÇÏÁö ¾ÊÀº »óÅ¿¡¼­´Â Çü±¤À» ¹ß»ý½ÃÅ°Áö ¾ÊÀ¸³ª dsDNA ¿Í °áÇÕÇÏ°Ô µÈ »óÅ¿¡¼­ ºûÀ» ¹Þ°ÔµÇ¸é Á¾·ù¿¡ µû¶ó Green, Red ±×¸®°í NIR °ú °°Àº Çü±¤À» ¹ß»ý½ÃÅ°°Ô µÈ´Ù.

ÃøÁ¤ÇÏ´Â ¼¼Æ÷µé¿¡¼­ ¹ßÇöµÇ´Â ÀÌ Çü±¤À» ¿¬¼ÓÀûÀ¸·Î ÃÔ¿µÇÏ°í ºÐ¼®ÇÏ¸é ¼¼Æ÷ÀÇ cytotoxicity Á¤µµ¸¦ ÀÚµ¿À¸·Î Á¤·®ÀûÀ¸·Î ÃøÁ¤ÀÌ °¡´ÉÇÏ´Ù.



Figure 1. Nuclear staining indicates loss of membrane integrity, a hallmark of cell death. The cell impermeable DNA stain, CytoTox green, stains cell nuclei only when cells have lost membrane integrity following treatment with a cytotoxic compound. Hallmarks of necrotic cell death include cytoplasmic swelling and loss of membrane integrity. Viable cells remain unstained, and their growth unperturbed in the presence of CytoTox green.


Quantitative Measurement of Cytotoxicity Using IncuCyte CytoTox Green

Staurosporine (SSP) ¿Í Camptothecin (CMP) Àº cytotoxicity ¸¦ À¯¹ß½ÃÄÑ ¼¼Æ÷¸¦ »ç¸ê·Î À¯µµÇÏ´Â È­ÇÕ¹°ÀÌ´Ù. SSP ´Â caspase-3 mediated apoptosis ¸¦ À¯µµÇÏ°í CMP ´Â topoisomerase I ÀÇ ÀÛ¿ëÀ» ¾ïÁ¦ÇÏ¿© apopotosis ¸¦ À¯µµÇÑ´Ù. ±×¸®°í Cycloheximide (CHX) ´Â ´Ü¹éÁú ÇÕ¼º¾ïÁ¦Á¦·Î¼­ cell proliferation À» ¾ïÁ¦ÇÏ´Â ±â´ÉÀ» ÇÏ´Â °ÍÀ¸·Î ÃßÃøÀº Çϳª ½ÇÁ¦ cell viability ¿¡´Â ¿µÇâÀ» ³¢Ä¡Áö ¾Ê´Â È­ÇÕ¹°ÀÌ´Ù.

ÀÌ 3°¡Áö È­ÇÕ¹°À» ¼¼Æ÷µ¶¼º À¯µµ¹°ÁúÀ» HT-1080 (human tumor derived fibrosarcoma) ¿Í MDA-MB-231 (human tumor derived breast adenocarcinoma) ¼¼Æ÷¿¡ ÅõÀÔÇÏ¿© ¼¼Æ÷µ¶¼ºÀ» À¯µµÇÏ´Â °úÁ¤À» IncuCyte CytoTox Green À» ÀÌ¿ëÇÏ¿© °üÂûÇÏ¿´´Ù.


Figure 2. Discrimination of cytotoxic and cytostatic compounds. 96-well microplate graph showing the kinetic measurement of cell death as determined by CytoTox green staining in response to several concentrations of SSP, CMP, and CHX in MDA-MB-231 cells (A) and HT-1080 cells (B).

[Âü°í] À§ À̹ÌÁö¿¡¼­ °¢°¢ÀÇ Ä­Àº 96-well ÀÇ °¢ well À» ÀǹÌÇÏ¸ç °¢ Ä­ ¾ÈÀÇ Àڱ׸¸ ±×·¡ÇÁ´Â ¼¼Æ÷¾È stained DNA ¿Í °áÇÕÇÑ Çü±¤¹°ÁúÀÌ ¹ß»ý½ÃÅ°°í ÀÖ´Â Çü±¤ÀÇ ¼¼±â¸¦ ³ªÅ¸³»°í ÀÖ½À´Ï´Ù. ±×·¡ÇÁ°¡ ¼öÆòÀÌ¸é ¹ß»ýµÇ´Â Çü±¤ÀÌ ¾øÀ¸¹Ç·Î ¼¼Æ÷µ¶¼º ¹ÝÀÀÀÌ ¾ø´Â °ÍÀ» ÀǹÌÇÏ°í SÀÚ ±×·¡ÇÁ´Â Çü±¤ÀÇ ¹ß»ýÇÏ°í ÀÖ´Â °ÍÀ» ÀǹÌÇϹǷΠ¼¼Æ÷µ¶¼º ¹ÝÀÀÀÌ °­ÇÏ°Ô ³ªÅ¸³ª°í ÀÖ´Ù´Â °ÍÀ» ÀǹÌÇÕ´Ï´Ù.

96-well plate ¿¡¼­ SSP ¿Í CMP ¸ðµÎ concentration- dependent cytotoxic response ¸¦ º¸¿´À¸¸ç ¼¼Æ÷¿¡ µû¶ó ¼¼Æ÷ µ¶¼ºÁ¤µµ´Â ¾à°£ ´Ù¸£°Ô ³ªÅ¸³µ´Ù. ¹Ý¸é CHX ´Â µÎ °³ÀÇ ¼¼Æ÷¿¡ ´ëÇØ ¸ðµÎ ¼¼Æ÷µ¶¼º ¹ÝÀÀÀÌ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù (Figure 2).


Figure 4. End point normalization of cytotoxic and cytostatic compounds. At the 72-hour end point, Triton X-100 at a final concentration of 0.0625% was added to allow nuclear dsDNA staining by CytoTox green of all cells present/well. The cytotoxic index was calculated by dividing the number of CytoTox green fluorescent objects by the total number of DNA containing objects (fluorescent objects counted post Triton X-100 treatment).


Figure 5. Morphological images. Phase-contrast and fluorescent images of NucLight HT-1080 showing morphological changes in response to SSP, CMP and CHX

Figure 4 ´Â ½ÇÇè ¸¶Áö¸· ´Ü°è¿¡¼­ MDA-MB-231, HT-1080 µÎ °³ÀÇ ¼¼Æ÷¿¡¼­ SSP, CMP, ±×¸®°í CHX 3°³ÀÇ ¹°ÁúÀÇ ¼¼Æ÷µ¶¼º À¯µµ Á¤µµ¸¦ ¼öÄ¡È­ÇÏ¿© ³ªÅ¸³½ ±×·¡ÇÁÀÌ°í Figure 5 ´Â SSP, CMP, CHX ¸¦ ó¸®ÇÑ HT-1080 ¼¼Æ÷ÀÇ Çü±¤ À̹ÌÁöÀÌ´Ù.

À§ µ¥ÀÌÅÍ·Î ºÎÅÍ ¿ì¸®´Â CytoTox Reagents ¸¦ ÀÌ¿ëÇÏ´Â IncuCyte Live-Cell Analysis System À» ÀÌ¿ëÇϸé Cytotoxicity ¸¦ Á¤È®ÇÏ°Ô, Æí¸®ÇÏ°Ô, ½Ç½Ã°£À¸·Î, ½Ã°¢ÀûÀ¸·Î, Á¤·®ÀûÀ¸·Î °üÂûÇÒ ¼ö ÀÖ´Ù´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ´Ù.







 
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