Name: genetic analysis of hereditary transthyretin ala97ser related amyloidosis
Uploaded: 2018-06-09T15:00:00
Description: Watch this Scientific Journal Video about Genetic Analysis of Hereditary Transthyretin Ala97Ser Related Amyloidosis at JoVE.com

우리가 실험에서 그녀의 도움에 대 한 미스 신 재미 우 감사 하고자 합니다. 이 연구는 장 공 의학 연구 프로그램 (CMRPG3C0371, CMRPG3C0372, CMRPG3C0373)와 IRB 100-4470A3, 104-2462A3, 대만에서 교부 금에 의해 지원 되었다.

임상 실험실 개선 개정 (CLIA) 1988 년의 기관 검토 위원회의 장 궁 메모 리얼 병원에서 승인 하는 규정 요구 사항에 따라 실시 되었다 테스트 실험실에서 수행 하 고 대학 (라이센스 번호 100-4470A3 및 104-2462A3). 동의 모든 환자에서 얻은 했다.
1. 혈액 표본 수집
<ol><li>상업적으로 사용할 수 있는 치료를 EDTA 튜브로 전체 혈액을 수집 합니다. 부드럽게 혼합 하 고 처리까지 4 ° C에서 ...

<ol>
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프로토콜 내에서 두 가지 중요 한 단계가 있습니다. 첫째, 백혈구 세포의 충분 한 수를 위해, hemodiluted 견본 피할된11이어야 한다. 둘째, 적절 한 PCR 뇌관의 사용이 이다 신뢰할 수 있는 결과12를 기본. 디자인 뇌관4,13; 뇌관 폭발 웹 도구를 사용 하는 우리 4 개의 TTR exons의 각 측에 40의 기본적인 쌍의 최소 처리 되어야 합...

Transthyretin (TTR) amyloidosis (ATTR) 조직의 유전 amyloidosis1, 가장 일반적인 형태 이며 transthyretin (TTR) 유전자2상 염색체 지배적 상속 된 돌연변이 의해 발생할 수 있습니다. TTR 돌연변이 tetrameric 단백질 구조를 불안정 하 게 하 고 녹말 체 소2로 재어셈블합니다 단위체로 그것의 분리 이어질. 100 amyloidogenic TTR 변이 보고 전세계1되었습니다. 중 합 효소 연쇄 반응 (PCR) 방법으로 유전자 분석 TTR 점 돌연변이의 존재를 확인 하 고 피하는 남쪽 오 점3에 비해 방사성 레이블이 프로브의 처리를 포함 하는 장점이 있다. PCR은 현대 과학4에 수많은 분야에 적용 된, 쉽게, 저렴 한, 빠르고 신뢰할 수 있는 기술입니다.
이 진보 및 치명적인 질병의 조기 진단의 phenotypic이 주어진 도전 이다. 관심과 ATTR 신흥 치료5의 초기 발현에 광범위 한 인식 증가, TTR 유전자 검사를 포함 한 적절 한 진단 연구는 따라서 비판적으로 예 후를 개선 하기 위해 근본적인. 또한, 다른 변이 특성의 다른 penetrance, 발병 연령, 진행, 질병의 심각도, 메디아 생존, 간 이식, 또는 TTR 안정기2,6, 효능의 패턴에 연관 된 고 가변도 신경학 적인 참여의 유전 상담7,,89에 대 한 큰 의미를가지고. 게다가, 매우 정확한 유전자 검사는 두 가지 유형의 속성을 구분 하는 유일한 도구: 유전 (돌연변이) 및 야생 유형 (비 돌연변이 형태, 치 조직의 amyloidosis, 특수)7. 그것은 치료2넓게 변화 하기 때문에, 속성의 종류를 확인 하는 것이 필수적입니다. 그러므로, TTR 유전자 검사의 stepwise 프로토콜을 설명 하는 증가 필요는 없다.
돌연변이 검출 하는 분자 접근 방식은 예를 들어 Ala97Ser, 대만, 가장 일반적인 발병 변이 사용 하 여 그림 것입니다. 수정 DNA 추출 단계에서 사용 되는 세 가지 솔루션의 양을 줄일 하 고 충분 한 양의 DNA 생성 합니다. 이 프로토콜에서 모든 4 개의 TTR exons 지역 5' 상류 3' 하류, 발기인, introns를 포함 하 여 동안, 분석 되었다 그리고 번역 되지 않은 영역 (UTR) 시퀀싱 하지 했다.

<table border="0" cellpadding="0" cellspacing="0" style="width:951px;" width="951">
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	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">EDTA-treated tubes</td>
			<td style="width:199px;">BD</td>
			<td style="width:347px;"></td>
			<td style="width:192px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">DNA Extraction Kit</td>
			<td style="width:199px;">Stratagen</td>
			<td style="width:347px;">200600</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:213px;">NanoDrop ND2000 spectrophotometer&#160;</td>
			<td style="width:199px;">Thermo Fisher Scientific</td>
			<td style="width:347px;">NanoDrop 2000</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">Delicate Task Wipers</td>
			<td style="width:199px;">Kimberly-Clark</td>
			<td style="width:347px;">Kimtech Science Kimwipes</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:213px;">AmpliTaq Gold 360 DNA Polymerase kit</td>
			<td style="width:199px;">Applied Biosystems</td>
			<td style="width:347px;">4398823</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">TTR gene intronic primers&#160;</td>
			<td style="width:199px;">Exon1</td>
			<td style="width:347px;">F: 5&#8217;-TCAGATTGGCAGGGATAAGC-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon1</td>
			<td style="width:347px;">R: 5&#8217;-GCAAAGCTGGAAGGAGTCAC-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon2</td>
			<td style="width:347px;">F: 5&#8217;-TCTTGTTTCGCTCCAGATTTC-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon2</td>
			<td style="width:347px;">R: 5&#8217;-TCTACCAAGTGAGGGGCAAA-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon3</td>
			<td style="width:347px;">F: 5&#8217;-GTGTTAGTTGGTGGGGGTGT-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon3</td>
			<td style="width:347px;">R: 5&#8217;-TGAGTAAAACTGTGCATTTCCTG-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon4</td>
			<td style="width:347px;">F: 5&#8217;-GACTTCCGGTGGTCAGTCAT-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;"></td>
			<td style="width:199px;">Exon4</td>
			<td style="width:347px;">R: 5&#8217;-GCGTTCTGCCCAGATACTTT-3&#8217;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">thermocycler</td>
			<td style="width:199px;">Applied Biosystems</td>
			<td style="width:347px;">GeneAmp PCR System 9700</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">electrophoresis cell&#160;</td>
			<td style="width:199px;">ADVANCE</td>
			<td style="width:347px;">Mupid-2plus</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">DNA ladder</td>
			<td style="width:199px;">Protech</td>
			<td style="width:347px;">PT-M1-100</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">dye</td>
			<td style="width:199px;">BioLabs</td>
			<td style="width:347px;">B7021</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">AlphaImager EC</td>
			<td style="width:199px;">Alpha Innotech</td>
			<td style="width:347px;">AlphaImager EC</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:213px;">automatic sequencer&#160;</td>
			<td style="width:199px;">Applied Biosystems</td>
			<td style="width:347px;">3730xl DNA Analyzer</td>
			<td></td>
		</tr>
	</tbody>
</table>

genetic analysis of hereditary transthyretin ala97ser related amyloidosis

유전자 검사 이며 유전 transthyretin에 대 한 가장 신뢰할 수 있는 테스트 관련 amyloidosis transthyretin amyloidosis (ATTR)의 대부분의 경우에서 수행 되어야 합니다. 속성은 유형이 다른 고기;와 희귀 하지만 치명적인 질병 따라서, 진단 때로는 지연 됩니다. 관심과 ATTR 신흥 치료의 초기 발현에 광범위 한 인식 증가 함께 transthyretin (TTR) 유전자를 포함 하 여 적절 한 진단 연구, 테스트, 종류를 확인 하 고 ATTR의 변종 따라서 예 후를 개선 하기 위해 근본적인. 중 합 효소 연쇄 반응 (PCR) 방법으로 유전자 분석 TTR 점 돌연변이의 존재를 훨씬 더 신속 하 게 확인 하 고 남쪽 오 점 등 기존 방법 보다 안전. 여기, 우리가 ATTR Ala97Ser 돌연변이, 대만에서 가장 일반적인 발병 돌연변이의 유전자 확인을 보여 줍니다. 프로토콜 구성 4 가지 주요 단계: 수집 전 혈 견본, DNA 추출, PCR와 모든 4 개의 TTR exons의 유전자 분석 및 DNA 연속.

Agarose 젤 전기 이동 법 두 환자와 exon TTR 유전자 (그림 1)의 4에 대 한 454 bp의 PCR 제품을 포함 한 예상된 크기에의 한 건강 한 개별 계시 밴드.
<img alt="Figure 1" class="xfigimg" src="/files/ftp_upload/57743/57743fig1.jpg"> 그림 1 . 젤 전기 이동 법 묘사 PCR 증폭 TTR 유전자. 일반: 건강 한 ?...

Watch this Scientific Journal Video about Genetic Analysis of Hereditary Transthyretin Ala97Ser Related Amyloidosis at JoVE.com

Genetic Analysis of Hereditary Transthyretin Ala97Ser Related Amyloidosis

여기, 우리는 예를 들어 Ala97Ser, 대만, 가장 일반적인 발병 변이 사용 하 여 유전 transthyretin amyloidosis의 진단에 대 한 점 돌연변이의 존재를 확인 하는 프로토콜 제시.

유전 Transthyretin Ala97Ser의 유전 분석 관련 Amyloidosis

Genetic testing is the most reliable test for hereditary transthyretin related amyloidosis and should be performed in most cases of transthyretin ...

With increasing attention on early manifestations of transthyretin amyloidosis as well as emerging treatments appropriate studies to confirm the types and variants of transthyretin amyloidosis are fundamental to improve prognosis. The main advantage of this protocol is that this test is feasible and easy to preform in the clinical laboratory. To begin the protocol obtain a DNA extraction kit, add 10 milliliters of solution one to the previous obtained 4.0 milliliter blood sample and incubate the sample on ice for 10 minutes.After incubation centrifuge the sample at 2000 G for five minutes at four degrees Celsius. Carefully remove and discard the supernatant. Re suspend the pellet in three milliliters of solution one.Centrifuge the sample at 2000 G for five minutes at four degrees Celsius again. Discard the supernatant. Re suspend the pellet in three milliliters of solution two.Next, add 10 microliters of Pronase stock solution to get a final concentration of 100 micrograms per milliliter and mix the contents well. Incubate the DNA at 37 degrees Celsius overnight. The next day, chill the tube on ice for 10 minutes.Add 0.8 milliliters of solution three to the sample and invert it three to five times. Then, place the sample on ice for five minutes. Centrifuge the sample at 3000 G for 15 minutes at four degrees Celsius.Carefully transfer the supernatant to a 15 milliliter sterile conical centrifuge tube and add six microliters of RNase stock solution to obtain a final concentration of 20 micrograms per milliliter. Incubate the sample, add 2.5 milliliters of isopropyl alcohol to the tube and gently invert the tube several times to precipitate the DNA which appears as strands of white flocculant material. With a large bore pipette transfer the precipitate to a new 1.5 milliliter centrifuge tube.Centrifuge the precipitate at 12, 000 G for three minutes at four degrees Celsius. Discard the supernatant carefully. Then wash the DNA pellet by adding 500 microliters of 70%ethanol.Centrifuge the DNA at 12, 000 G for one minute and discard the supernatant. Air dry the DNA pellet at room temperature. Add 100 microliters of DDH2O and incubate the sample at 65 degrees Celsius for 15 minutes to re suspend the DNA.Perform PCR in a 25 microliter reaction mixture using a DNA polymerase kit. Add the reagents to a 0.2 milliliter PCR tube. Mix the contents gently and briefly centrifuge them in a bench top centrifuge.Place the tube in a thermal cycler. Perform the PCR for 30 cycles with a denaturation step for 30 seconds at 94 degrees Celsius, primer enabling for 30 seconds at 58 degrees Celsius and polymerase extension for 45 seconds at 72 degrees Celsius. Prepare a 1.2%agarose gel by mixing 1.2 grams of agarose powder with 100 milliliters of 0.5 XTBE in a microwaveable flask.Microwave the solution for two minutes until the agarose is completely dissolved. Cool down the agarose mixture to 55 degrees Celsius. Add two microliters of ethidium bromide solution to the agarose mixture and mix gently.Pour the mixture into a gel tray to about five to seven millimeters. Then, insert the comb. Allow the gel to solidify for at least 30 minutes.After the gel has solidified carefully remove the comb. Place the gel and tray into the electrophoresis cell. Fill the electrophoresis cell with 0.5 XTBE until the gel is covered.Carefully load two microliters of a 100 base pair DNA ladder into the one lane of the gel as a molecular size marker. Load the dye and sample mixture into the additional lanes. Turn on the power supply and run the gel for 25 minutes at 100 volts.Remove the gel from the electrophoresis cell. Finally, visualize the DNA fragments under UV light in an imaging system. Agarose gel electrophoresis of two patients and one healthy individual reveal bands of the expected sizes including a 454 base pair PCR product for exon four of the TTR gene.Sequence chromatograms disclosed a nucleotide T substitution for G in exon four of the TTR gene resulting in a missense mutation and an alanine to serine substitution at amino acid position 97 in two patients. After watching this video you should have a good understanding of how to confirm the presence of point mutations for the diagnosis of hereditary transthyretin amyloidosis.

Research

JoVE Journal

Medicine

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연구

의학

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