Copy Number Status of TERT Gene in a Myeloid Leukaemia Cell Line, K562: Application of Interphase Fluorescence in situ Hybridization (FISH) Analysis
Telomeraseisribonucleoproteinenzymecomplexconsistingoftwomaincorecomponents;reversetranscriptase(TERT),andRNAtemplatefortelomericDNAsynthesis(TERC).TERTgeneactsascatalyticcomponentinthisenzymeandislocatedonchromosome5p15.IthasbeenreportedthatthereisanamplificationorincreaseofTERTgenecopynumberinhuma...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2011
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| Subjects: | |
| Online Access: | http://eprints.unisza.edu.my/2053/1/FH02-FSK-19-25054.pdf http://eprints.unisza.edu.my/2053/ |
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| Summary: | Telomeraseisribonucleoproteinenzymecomplexconsistingoftwomaincorecomponents;reversetranscriptase(TERT),andRNAtemplatefortelomericDNAsynthesis(TERC).TERTgeneactsascatalyticcomponentinthisenzymeandislocatedonchromosome5p15.IthasbeenreportedthatthereisanamplificationorincreaseofTERTgenecopynumberinhumancancercelllinesandprimarytumoursampleswhichmayassociatewithincreasedtelomeraseactivity.Inourstudy,dual-colorassayprobewasusedinfluorescencein situhybridization(FISH)analysisthatcoveredthegenomicregionencodingTERT(Redsignal)togetherwithaspecificsequenceofEGR1(Greensignal)at5q31tofacilitatechromosomeidentification.Innormalcells,theFISHsignalpatternwasobservedastwogreensignalsandtworedsignals(2G2R).AmplificationoftheTERTgenehasbeendetectedinmorethan90%ofthecellsincelllineintheleukaemia.Besidesthat,aneusomyofchromosome5wasalsodetectedindicatingthepresenceofthreecopiesofchromosome5with3G3Rsignalpattern.Thus,theapplicationofinterphaseFISHtechniquefordetectionofTERTgeneamplificationhasbeensuccessfullyoptimized |
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