- Complete BCR repertoire profiling: SMART¢ç ±â¼ú°ú 5¡¯ RACE¹ýÀ» Á¢¸ñ½ÃÄÑ ¸ðµç mouse BCR heavy chain (IgG, IgM, IgA, IgD, IgE)°ú light chain (IgK, IgL)À» °í°¨µµ·Î °ËÃâ °¡´É
- ´Ù¾çÇÑ input range: 10 ng - 1 §¶ÀÇ high-integrity RNA (RIN>7) »ùÇÿ¡ Àû¿ë (mouse spleen, bone marrow, lymph nodes, whole blood, PBMC)
- °£´ÜÇÑ ¿öÅ©Ç÷οì: heavy, light immunoglobulin chain¿¡ ´ëÇÑ primer pool°ú enzyme premix Á¦°ø
- Á¤È®µµ Çâ»ó: UMI ±â¹ÝÀ¸·Î PCR duplicates, errors¸¦ º¸Á¤ÇÏ¿© clonotype diversity¹× abundance assessment¸¦ Á¤È®ÇÏ°Ô °ËÃâ °¡´É
- À¯¿¬¼º: Full-length V(D)J region ȤÀº CDR3¸¦ °¢°¢ ½ÃÄö½ÌÇÒ ¼ö ÀÖÀ¸¸ç, ÃÖ´ë 384°³ UDI·Î multiplex °¡´É
- High-throughput ½ÇÇè¿¡ Àû¿ë °¡´É: miniaturization ¹× automation °¡´É
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SMART-Seq¢ç Mouse BCR (with UMIs)À» »ç¿ëÇÏ¸é ¸ðµç BCR isotypes (heavy chain IgA/D/E/G/M, light chain IgK/L)ÀÇ mouse BCR ¼¿À» °ËÃâÇÒ ¼ö ÀÖ´Ù. SMART (Switching Mechanism at 5' end of RNA Template) ±â¼úÀ» ÀÌ¿ëÇÏ´Â º» Á¦Ç°Àº NGS¿Í 5'-RACE¸¦ °áÇÕÇÏ¿© mouse B¼¼Æ÷ÀÇ full-length V(D)J ¼¿À» ºÐ¼®ÇÑ´Ù.
º» Á¦Ç°Àº ³ÐÀº ¹üÀ§ÀÇ total RNA input (10ng - 1 §¶, RIN>7)À» Çã¿ëÇϸç, mouse spleen, bone marrow, peripheral blood mononuclear cells (PBMCs), ¶Ç´Âmouse Ç÷¾×À̳ª ¸²ÇÁÀý¿¡¼ ÃßÃâÇÑ RNA¸¦ Æ÷ÇÔÇÑ ´Ù¾çÇÑ »ùÇà À¯Çü¿¡µµ Àû¿ëÇÒ ¼ö ÀÖ´Ù.
Á¦Ç° ³»¿¡´Â primer pool°ú enzyme premix°¡ Æ÷ÇԵǾî ÀÖ¾î BCR library Á¦ÀÛ °úÁ¤À» °£¼ÒÈÇÑ´Ù. ¶ÇÇÑ Unique molecular identifiers (UMIs)°¡ ¿öÅ©Ç÷ο쿡 Æ÷ÇԵǾî ÀÖ¾î µ¥ÀÌÅÍ ºÐ¼® Áß PCR bias ¹× ½ÃÄö½Ì ¿¡·¯¸¦ Á¦°ÅÇÏ¿© Á¤È®ÇÑ ºÐ¼®ÀÌ °¡´ÉÇÏ´Ù. ¶ÇÇÑ º» Á¦Ç°Àº Unique Dual Index Kits (Code 634752-56, º°µµ ÆǸÅ)¿Í ȣȯµÇ¾î ÃÖ´ë 384°³ÀÇ BCR library¸¦ pooling ÈÄ ´ÜÀÏ flow cellÀ» ÀÌ¿ëÇÒ ¼ö ÀÖ¾î ½ÃÄö½Ì ºñ¿ëÀ» Àý°¨ÇÒ ¼ö ÀÖ´Ù. ÇÁ·ÎÅäÄÝ ¶ÇÇÑ automation Ä£ÈÀûÀ̹ǷΠ½±°Ô miniaturizationÇÒ ¼ö ÀÖ¾î ¹ÝÀÀ ´ç ºñ¿ëÀ» ÁÙÀÌ°í 󸮷®À» ´Ã¸± ¼ö ÀÖ´Ù.
º» Á¦Ç°°ú Unique Dual Index Kits (Code 634752-56)·Î Á¦ÀÛµÈ library´Â ½ÃÄö½Ì À¯¿¬¼ºÀÌ ³ô°í, ¸ðµç Illumina sequencer¿¡¼ ½ÃÄö½ÌÀÌ °¡´ÉÇÏ´Ù. ´õ ¸¹Àº µ¥ÀÌÅÍ°¡ ÇÊ¿äÇÑ °æ¿ì full-length V(D)J ¿µ¿ªÀ» ½ÃÄö½ÌÇÏ°í, CDR3 ¿µ¿ªÀ» ¼±ÅÃÇÏ¿© ½ÃÄö½Ì ºñ¿ëÀ» Àý¾àÇÒ ¼öµµ ÀÖ´Ù.
±×¸² 1. SMART-Seq¢ç Mouse BCR (with UMIs) ±â¼ú ¹× ¿öÅ©Ç÷οì.
´ÙÄ«¶óÀÇ µ¶ÀÚÀûÀÎ SMART¢ç ±â¼úÀ» ÀÌ¿ëÇÏ¿© cDNA¸¦ ÇÕ¼ºÇÏ°í, 5¡¯ RACE ¹æ¹ýÀ¸·Î BCR Àü»çüÀÇ Àüü V(D)J °¡º¯ ¿µ¿ªÀ» capture ÇÑ´Ù. ¶ÇÇÑ µ¥ÀÌÅÍ ºÐ¼® Áß PCR error ±³Á¤ ¹× clonotypeÀÇ Á¤È®ÇÑ Á¤·®È¸¦ À§ÇØ ¿öÅ©ÇÃ·Î¿ì °úÁ¤¿¡¼ unique molecular identifiers (UMIs)¸¦ ºÎ°¡ÇÑ´Ù. ±× °á°ú Àüü BCR heavy chain¹× light chainÀÇ °¡º¯¿µ¿ªÀ» Æ÷ÇÔÇÏ´Â sequencing-ready library°¡ ¿Ï¼ºµÈ´Ù.
±×¸² 2. ¶Ù¾î³ °¨µµ·Î ¸ðµç BCR clonotypeÀ» °ËÃâÇÑ mBCRv2 (SMART-Seq¢ç Mouse BCR (with UMIs)).
ÆгÎA. º» Á¦Ç°À» ÀÌ¿ëÇÏ¿© mouse spleen RNA 10 ng, 100 ng, 1,000 ngÀ¸·Î BCR heavy chain (IgA/D/G/E/M)°ú light chain (IgK/L) library¸¦ Á¦ÀÛÇÏ¿´°í, input ¾ç¿¡ µû¶ó clonotype ¼ö°¡ Áõ°¡ÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.
ÆгÎB. SMART-Seq¢ç Mouse BCR (with UMIs)´Â °¨µµ°¡ ³ô¾Æ ´õ ¸¹Àº heavy chain°ú light chainÀÇ clonotypeÀ» °ËÃâÇÒ ¼ö ÀÖ¾ú´Ù.
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¤ý Á¶Á÷ ¹× ¼øȯ°è¿¡¼ B¼¼Æ÷ clonal organizationÀÇ ´Ù¾ç¼ºÀ» ºÐ¼®ÇÏ¿© B¼¼Æ÷ ºÐÈ pathway ¹× ±â´É¿¡ ¾î¶² ¿µÇâÀ» ¹ÌÄ¡´ÂÁö ÀÌÇØ
¤ý °¨¿°º´¿¡ ´ëÇÑ ´õ ³ªÀº ¹é½ÅÀ̳ª Ä¡·á¸¦ À§ÇØ affinity°¡ ³ôÀº BCR °Ë»ö
¤ý HIV ¹× ±âŸ Áúº´¿¡ ´ëÇÑ mouse Áúº´ ¸ðµ¨¿¡¼ ¸é¿ª¹ÝÀÀ ÈÄ Ç׿ø ƯÀÌÀû B¼¼Æ÷ÀÇ º¯È¿Í À̵¿ ÃßÀû
¤ý ½Ã°£ÀÌ Áö³²¿¡ µû¶ó »õ·Î¿î epitope¿¡ ´ëÇÑ ÀÚ°¡Ç×üÀÇ ¹ß´Þ°ú ÀÌ°ÍÀÌ ·çǪ½º¿Í °°Àº ÀÚ°¡¸é¿ª ÁúȯÀÇ ÁßÁßµµ¿Í ¾î¶»°Ô ¿¬°üµÇ´ÂÁö BCR ¼¿À» ¿¬±¸
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º¸°ü Á¶°Ç ¹× Á¦Ç° ±¸¼ºÇ°, ±â¼ú »ç¾ç¿¡ ´ëÇÑ ÀÚ¼¼ÇÑ ³»¿ëÀº Á¦Ç°ÀÇ Certificate of Analysis¸¦ ÂüÁ¶Çϼ¼¿ä. Å°Æ® ±¸¼ºÇ°À» È®ÀÎÇÏ·Á¸é Kit Components List¸¦ ÂüÁ¶Çϼ¼¿ä.
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