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À§¾Ï Á¶Á÷¿¡¼­ Helicobacter pylori Urease A geneÀÇ ´ÙÇü¼º ºÐ¼® Polymorphism Analysis of Helicobacter pylori Urease A Gene in Gastric Cancer Samples

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Abstract

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rrfirosorfrr pylori(H. pylori)´Â 1982³â Marshall °ú Warren¿¡ ÀÇÇÏ¿© »ç¶÷ÀÇ À§Á¡¸· »ý°Ë
¿¡¼­ óÀ½ ºÐ¸® ¹è¾çµÇ¾úÀ¸¸ç, ÇöÀç ÀÌ ±Õ°ú À§, ½ÊÀÌÁöÀå ÁúȯÀÇ °ü·Ã¼º¿¡ °üÇÑ ¸¹Àº º¸°í
°¡ ÀÖ´Ù. À§¿°ÀÇ °æ¿ì´Â ¾à 80%, À§±Ë¾çÀÇ °æ¿ì´Â 65%, ½ÊÀÌÁöÀå±Ë¾çÀÇ °æ¿ì¿¡´Â ¾à 100%
°¡ °ü·ÃµÇ¾î ÀÖ´Ù°í ¾Ë·ÁÁ® ÀÖÀ¸¸ç ÃÖ±Ù¿¡´Â H. pyloriÀÇ °¨¿°ÀÌ À§¾ÏÀ» ¹ßº´½ÃÅ°´Â À§Çè
ÀÎÀÚ¶ó°í º¸°íµÇ°í ÀÖ´Ù. ¹Ì±¹, È£ÁÖ µîÀÇ ¼±Áø±¹ÀÇ °æ¿ì¿¡´Â ¾ç¼ºÀ²ÀÌ 20%¡­30%ÀÌ°í, ¿ì
¸® ³ª¶ó ¼ºÀÎÀÇ °æ¿ì 80% ÀÌ»óÀÌ º¸±ÕÀÚÀ̸ç H. pylori´Â À§»ý »óÅ°¡ ÁÁÁö ¾ÊÀº ±¹°¡¿¡¼­
¾ç¼ºÀ²ÀÌ ³ô´Ù°í ¾Ë·ÁÁ® ÀÖ´Ù. ÀÌ ¼¼±ÕÀÇ ÀüÆÄ °æ·Î´Â ±¸°­-±¸°­À̰ųª ´ëº¯-±¸°­ÀÏ °ÍÀ¸·Î
ÃßÁ¤µÇ°í ÀÖÀ¸¸ç °­¹°¿¡¼­ ÀÏÁÖÀÏ ÀÌ»ó »ýÁ¸ÇÒ ¼ö ÀÖ¾î ÀÎü³» º¸±ÕÀ²ÀÌ ³ôÀº °ÍÀ¸·Î ÆÇ´Ü
µÇ¾îÁö°í ¿µÀ¯¾Æ ½ÃÀýºÎÅÍ ½ÃÀÛÇÏ¿© ¼Ò¾Æ ¿¬·É¿¡¼­µµ ¸Å¿ì ³ôÀº °¨¿° ¾ç¼ºÀ²ÀÌ º¸°íµÇ°í ÀÖ
´Ù.
ÇöÀç±îÁö »ç¿ëµÇ°í ÀÖ´Â H. pyloriÀÌ Áø´Ü ¹æ¹ýÀ¸·Î´Â ¹è¾ç¹ý, Giemsa ¿°»ö¹ý,
enzymelinked immunosorbent assay(ELISA), western blotting, urease °Ë»ç¹ý µîÀÌ ÀÖÀ¸³ª
°¢°¢ °Ë»ç ¹æ¹ýÀÌ ±î´Ù·Ó°í ¸¹Àº ½Ã°£À» ¼Ò¿äµÇ¸ç À§¾ç¼º, À§À½¼º µîÀÇ ¿©·¯ °¡Áö ¹®Á¦Á¡µé
¶§¹®¿¡ ÀÓ»ó¿¡¼­ ÈçÈ÷ »ç¿ëÇϱ⿡´Â ¿ëÀÌÇÏÁö ¾Ê´Ù. ¶ÇÇÑ, ÀÌ ±ÕÀÇ °¨¿° °æ·Î¿Í Àç°¨¿° ¿©ºÎ
µîÀÇ ¿ªÇÐÀû ¿¬±¸¸¦ À§Çؼ­ À¯ÀüÀû ´Ù¾ç¼ºÀ» ±âÃÊ·ÎÇÑ Çüº° ±¸ºÐÀº ¸Å¿ì Áß¿äÇÑ ÀÇÀǸ¦ °®
´Â´Ù´Â º¸°í°¡ ÀÖ´Ù. ÀÌ¿¡ ÀúÀÚµéÀº ÃÖ±Ù ÀÓ»ó¿¡¼­ ¸¹Àº È°¿ëÀÌ µÇ°í ÀÖ´Â ºÐÀÚ»ý¹°ÇÐÀûÀÎ
±â¹ýÀÎ nested poly-merase chain reaction(PCR)À» ÀÌ¿ëÇÏ¿© Giemsa ¿°»öÀ¸·Î H. Pylori°¡
È®ÀÎµÈ À§¾ÏÀÇ ÆĶóÇÉ Æ÷¸Å Á¶Á÷À¸·ÎºÎÅÍ DNA¸¦ °ËÃâÇÏ°í nested PCR¿¡ ÀÇÇØ ¾ò¾îÁø »ê
¹°À» Á¦ÇÑ È¿¼Ò ÀýÆí ´ÙÇü¼º(restriction fragment length polymorphism; RFLP)À» ÀÌ¿ëÇÏ¿©
º¸´Ù ½Å¼ÓÇÏ°í °£ÆíÇÏ°Ô H. pylori urease A À¯ÀüÀÚÀÇ Çüº° ±¸ºÐÀ» ½ÃµµÇÏ¿© À¯ÀÇÇÑ °á°ú¸¦
¾ò¾ú±â¿¡ º¸°íÇÏ´Â ¹ÙÀÌ´Ù.
#ÃÊ·Ï#
Purpose : Several investigators reported the polymerase chain reaction(PCR) method
was more sensitive than culture or other routine laboratory tests for the detection of H.
pylori. In this study, we established the nested PCR method for the sensitive and
specific determination of H. pylori from paraffin-embedded gastric cancer samples, and
the polymorphisms of H. pylori urease A gene were analyzed using by restriction
fragment length polymorphism (RFLP).
Materials and Methods : It was subjected to the nested PCR using two primer pairs
from the urease A gene of r. pylori. The sensitivity of the nested PCR assay was
investigated with serial dilutions of positive DNA of H. pylori. Polymorphisms of H.
pylori were determined by digestion of thirty six PCR positive products with five
different restriction endonuclease-MspI, AluI, DdeI, BstNI, and HinfI.
Results : Amplified H. pylori PCR products were detected to 106 dilutions(10-3 fg) by
nested PCR technique. The polymorphic patterns of five types of H. pylori were found
by MspI, DdeI and AluI. Sequence of type ¥´ was confirmed by direct sequencing and
the sequences recognized by BstNI and HinfI were conserved regions..
Conclusions : Nested PCR technique is a accurate, sensitive and reliable method for
the laboratory diagnosis of H. pylori infection. Moreover nested PCR-RFLP analysis has
a potential to differentiate H. pylori strains.

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Helicobacter pylori; PCR; RFLP;

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