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Capnocytophaga ochracea·ÎºÎÅÍ À¯·¡µÈ bacteriocinÀÇ ¿ì½Ä¼º¼¼±ÕÀÇ »ýÀå¾ïÁ¦

Inhibition of cariogenic bacteria by Capnocytophaga ochracea-derived bacteriocin

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±èÁÖ½É/Ju Sim Kim ±èȯ±Ô/ÀÌ°­¿í/Àå±â¿Ï/±èÁÖ½É/±èȯ±Ô/ÀÌ°­¿í/Àå±â¿Ï/Hwan Gyu Kim/Kang Wook Lee/Kee Wan Chang/Ju Sim Kim/Hwan Gyu Kim/Kang Wook Lee/Kee Wan Chang

Abstract

°á·Ð
C. ohracea ATCC 27872 ±ÕÁÖÀÇ bacteriocin »ý¼º¿©ºÎ¸¦ Á¶»çÇÏ°í È°¼ºÀÌ ³ôÀº ±ÕÁÖ¸¦ ¼±
ÅÃÇÏ¿© ±× »ý¹°ÇÐÀû Ư¼º ¹× bacteriocin È°¼ºÀÇ À¯·¡¸¦ Á¶»çÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú
´Ù.
1. C. ochracea ATCC 27872´Â bacteriocinÈ°¼ºÀ» °¡Áö°í ÀÖÀ¸¸ç, S. mutans KCTC 3065,
S. sanguis KCTC 3284, S. mitis KCTC 3217µîÀÇ ¼¼±Õ¿¡ ´ëÇØ ¼ºÀå¾ïÁ¦ È¿°ú¸¦ º¸¿´´Ù.
2. C. ochracea ATCC 27872±ÕÁÖÀÇ bacteriocinÈ°¼ºÀº ÃÊÀ½ÆÄó¸® »óû¾× ºÐȹ¿¡¼­¸¸ ³ªÅ¸
³ª ¼¼Æ÷Áú¿¡ ¿ëÇصǾî ÀÖ´Â ÇüÅ·ΠÁ¸ÀçÇÏ°í ÀÖÀ½À» È®ÀÎÇß´Ù.
3. C. ochracea ATCC 27872 ±ÕÁÖ¿¡¼­ ÃßÃâÇÑ bacteriocinÀº 40¡É-70¡ÉÀÇ ¿Âµµ¿¡¼­´Â Àú
Ç×¼ºÀ» ³ªÅ¸³ÂÀ¸¸ç, pH 5.5-pH 7.5¿¡¼­µµ ¾ÈÁ¤¼ºÀ» º¸¿´°í ´Ü¹é Áú¼º bacteriocinÀ¸·Î ³ªÅ¸
³µ´Ù.
4. º» ¿¬±¸¿¡¼­ ºÐ¸®ÇÑ bacteriocinÀº curing test¸¦ ÅëÇØ plasmid DNA¿¡¼­ À¯·¡µÇ¾úÀ½À»
¾Ë ¼ö ÀÖ¾úÀ¸¸ç, C. ochracea ATCC 27872 ±ÕÁÖ¿¡¼­ ºÐ¸®ÇÑ plasmid DNA´Â µÎ°¡Áö Å©±âÀÇ
band(3.1 kb¿Í 3.8 kb)·Î ³ªÅ¸³µ´Ù.

The purpose of this study was to evaluate the antagonistic action among oral bacteria,
especially between Capnocytophaga ochracea and Streptococcus species. To investigate
this relationship, the bacteriocin-like inhibitory activity of some Capnocytophaga species
was screened, and bacteriocin from a strain of C. ochracea ATCC 27872 was extracted
by ultrasonic treatment and partially characterized.
It was found that the bacteriocin was produced by C. ochracea ATCC 27872 and C.
gingivalis ATCC 33624 strains. Among the 8 tested strains, S. mutans KCTC 3065, S.
sanguis KCTC 3284 and S. mitis KCTC 3217 were sensitive to this bacteriocin. This
bacteriocin was stable at 40¡É-70¡É and pH 5.5-7.5, destroyed by proteolytic enzymes.
C. ochracea ATCC 27872 strain was resistant to kanamycin, streptomycin, ampicillin,
and erythromycin but sensitive to tetracyclin and penicillin-G. Curing test with ethidium
bromide and proper antibiotics, we found that the bacteriocin activity was originated
from plasmid DNA. And the isolated DNA from C. ochracea ATCC 27872 showed two
different size(3.1 kb, 3.8 kb) by the restriction enzyme digestion analysis.

Å°¿öµå

Capnocytophaga ochracea; Bacteriocin; Plasmid DNA;

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