Name: automated analysis of dynamic ca2+ signals in image sequences
Uploaded: 2014-06-16T15:00:00
Description: Watch this Scientific Journal Video about Automated Analysis of Dynamic Ca2+ Signals in Image Sequences at JoVE.com

This work was supported in part by National Institutes of Health Grants HL-085887, HL-092992, S10RR027535, and MOP-93676.

1. 선박의 해부 및 이미징 <ol><li> 마틴 등 27에 설명 된대로 국내 청소년 돼지에서 수확 조직. 폴리 디메틸 실록산 (PDMS) HEPES는 생리 식염수 (PSS)를 버퍼 포함 아래 해부 접시에 수확 돼지 우심실을 놓습니다. <ol><li> 실체 현미경의 도움으로, 해부 주위 심장 조직의 층에서 혈관 세그먼트를 제거하여 집게와 봄 가위를 사용하여 주변 조직에서 관상 동맥 (~ 8mm 길이 0.5 mm 직경) 좌전 하행...

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Decoding complex Ca2+ signals at the cellular and multicellular level will require rigorous experimental and analytical approaches. Here, an approach is described in which time resolved confocal image sequences of Ca2+ dependent fluorescence are subjected to an automated analysis that identifies and quantifies statistically relevant Ca2+ signals within intact cellular fields In the specific case presented, an artery segment was isolated from pig heart, pinned opened to expose the endothel...

칼슘 2 +는 분자 및 세포 내 칼슘 2 + 수준을 높게 조절되는 신호 유비쿼터스 두 번째 메신저입니다. 세포 내 칼슘 2 + 신호가 복잡하고 고립 과도, 진동, 파도 1 전파 포함 - 4. 칼슘 2 +의 공간과 시간 제어 생체 신호 특이성을 기초로 생각, 따라서 칼슘 2 + 신호 패턴의 분석은 여러 필드 5의 조사에 상당한 관심입니다. 예컨대 플루오 (Fluo) -4의 Fura-2와 같은 칼슘 2 + 인디케이터 염료는 일반적으로 형광 현미경 5-12로 내 Ca 2 + 신호를 측정하기 위해 사용된다. 16 - 일반적으로, 시간적 칼슘 2 + 신호는 시간에 따른 사용자 정의 지역 내의 평균 형광의 변화, 또는 관심 영역 (ROI) 5,6,13로 평가됩니다. 현재, 수동 ROI 분석은 시간과 노동력에19 -가 많은 로아를 확인하고 반복적 인 연산 17을 수행하는 사용자가 필요로하기 때문에 긴장의. 이 기술은 인공 신호 모드와 낮은 진폭 또는 확산 신호 (18, 20)의 배제의 도입을 포함, 많은 사용자의 오차가있을 수 있습니다. , 자동 ROI 검출 알고리즘은 이전에 최적의 투자 수익 (ROI)의 위치를 결정하기 위해 통계적 다양한 접근 방법을 사용하여 구현되었지만, 일반적으로 라인 스캔 또는 의사 선 시간이 17에서 하나의 공간 차원으로 분석을 제한 스캔 이미지의 분석에 국한되어 19-22. 또한, 기존의 많은 알고리즘 캘리포니아주기, 지역화 과도에서 전파 파도 (23, 24)에 이르기까지 다양 2 + 릴리스 이벤트의 다양성을 포괄하기에 충분하지 않습니다. 생리 칼슘 2 + 신호의 종합 평가는 종종 더 큰 이미지의 인형도 만들고의 존재에 의해 복잡그 많은 실험 시스템의 잡음 차별 신호를 혼동 역할을합니다. 이전에, 캘리포니아에 자동 ROI 검출 알고리즘 솔루션 2 +는 (건강, 베데스다, MD의 국립 연구소)가 개발하고 (25), (26)을 검증 된 NIH ImageJ에 소프트웨어를위한 플러그인으로 구현, 과도 감지 신호. LC_Pro 불리는이 알고리즘은 두 가지 차원의 시간 경과 이미지 시퀀스에서 칼슘 2 + 과도 신호를 포괄의 ROI를 확인하고 분석 할 수 있도록 설계되었습니다. 여기서 실제 실험 프로토콜 및 돼지 관상 동맥 내피의 알고리즘의 적용이 가능한 대표적인 데모 그래픽 출력을 생성하기 위해 오픈 소스 통계 처리 소프트웨어 R을 후 처리하여 추가로 제공된다.

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			<td height="21" style="height:21px;width:216px;">dissection dish</td>
			<td style="width:71px;">Fisher Sci</td>
			<td style="width:119px;">#08-772-70</td>
			<td style="width:167px;"></td>
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		<tr height="21">
			<td height="21" style="height:21px;width:216px;">polydimethylsiloxane (PDMS)</td>
			<td style="width:71px;">Fisher Sci</td>
			<td style="width:119px;">#NC9644388</td>
			<td>elastomer kit, must be molded into dishes</td>
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			<td height="21" style="height:21px;width:216px;">HEPES-buffered PSS</td>
			<td style="width:71px;">Sigma</td>
			<td style="width:119px;">#H3375-250G</td>
			<td>HEPES acid</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">stereomicroscope</td>
			<td style="width:71px;">Nikon Inst.</td>
			<td style="width:119px;">#MNA42000</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">forceps</td>
			<td style="width:71px;">Fine Science Tools</td>
			<td style="width:119px;">#11223-20</td>
			<td></td>
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		<tr height="63">
			<td height="63" style="height:63px;width:216px;">spring scissors</td>
			<td style="width:71px;">Fine Science Tools</td>
			<td style="width:119px;">15003-08</td>
			<td></td>
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		<tr height="42">
			<td height="42" style="height:42px;width:216px;">tungsten wire</td>
			<td style="width:71px;">Scientific Inst Svcs</td>
			<td style="width:119px;">#406</td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Fluo-4 AM</td>
			<td style="width:71px;">Life Tech.</td>
			<td style="width:119px;">#F-14201</td>
			<td></td>
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			<td height="21" style="height:21px;width:216px;">pluronic F-127</td>
			<td style="width:71px;">Life Tech.</td>
			<td style="width:119px;">#P3000MP</td>
			<td></td>
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			<td height="63" style="height:63px;width:216px;">metal pins</td>
			<td style="width:71px;">Fine Science Tools</td>
			<td style="width:119px;">#26002-10</td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;width:216px;">cover-glass bottom chamber</td>
			<td style="width:71px;"></td>
			<td style="width:119px;"></td>
			<td>Custom designed</td>
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		<tr height="42">
			<td height="42" style="height:42px;width:216px;">spinning disc confocal microscope</td>
			<td style="width:71px;">Perkin Elmer</td>
			<td style="width:119px;">RS-3</td>
			<td></td>
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			<td height="21" style="height:21px;width:216px;">imageJ software</td>
			<td style="width:71px;"></td>
			<td style="width:119px;"></td>
			<td><a href="http://rsbweb.nih.gov/ij/download.html">download at: http://rsbweb.nih.gov/ij/download.html</a></td>
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			<td height="21" style="height:21px;width:216px;">LC_Pro plugin for imageJ</td>
			<td style="width:71px;"></td>
			<td style="width:119px;"></td>
			<td><a href="http://rsbweb.nih.gov/ij/plugins/lc-pro/index.html">download at: http://rsbweb.nih.gov/ij/plugins/lc-pro/index.html</a></td>
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			<td height="21" style="height:21px;width:216px;">R software</td>
			<td style="width:71px;"></td>
			<td style="width:119px;"></td>
			<td><a href="http://www.r-project.org/">download at: http://www.r-project.org/</a></td>
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			<td height="21" style="height:21px;width:216px;">R traceplot script</td>
			<td style="width:71px;"></td>
			<td style="width:119px;"></td>
			<td><a href="https://docs.google.com/file/d/0B-PSp1D9e2fjV3NIcGppUzkxdEk/edit?usp=sharing">download at: https://docs.google.com/file/d/0B-PSp1D9e2fjV3NIcGppUzkxdEk/edit?usp=sharing</a></td>
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automated analysis of dynamic ca2+ signals in image sequences

세포 내 칼슘 2 + 신호는 일반적으로 형광 칼슘 2 + 지표 염료 및 현미경 기술을 연구한다. 그러나, 칼슘 2 + 영상 데이터의 정량 분석 시간과 바이어스에 따라 달라질 수 있습니다. 또한 (ROI)의 검출 영역에 기초하여 자동화 된 신호 분석 알고리즘은 일차원 라인 스캔 측정에 대해 구현되어 있지만 이차원 이미지 시퀀스에서 최적화 된 신분증과의 ROI 분석을 통합 전류 알고리즘은 없다. 여기서 이미지 시퀀스에서 수집 및 급속의 ROI 분석을위한 알고리즘을 설명한다. 이 타원이 최적의 투자 수익 (ROI)의 위치를 결정하기 위해 노이즈 필터링 된 신호에 맞게 활용하고, 진폭, 시간 및 공간 확산의 칼슘 2 + 신호 파라미터를 계산한다. 이 알고리즘은 ImageJ에 (NIH) 소프트웨어를 자유롭게 사용할 수 플러그인으로 구현되었습니다. 함께 오픈 소스 통계 처리 소프트웨어 R 용으로 작성된 분석 스크립트와,이러한 접근법은 실험 출력 퀵 통계 분석을 수행하기위한 고용량 파이프 라인을 제공한다. 저자는이 분석 프로토콜의 사용은 생리적 칼슘 2 + 신호의보다 완전하고 공정한 특성으로 이어질 것입니다 것이 좋습니다.

A custom algorithm, LC_Pro, was developed and implemented in order to perform automated analysis of Ca2+ dynamics on confocal image sequences. As depicted in Figure 1, the algorithm utilizes sequential processing modules that A) detect and track sites of dynamic Ca2+ change above statistical (p &#60; 0.01) noise, B) define regions of interest (ROI) automatically at active site centers, and C) calculate average fluorescence intensities at ROIs to determine specific event parameters. ...

Watch this Scientific Journal Video about Automated Analysis of Dynamic Ca2+ Signals in Image Sequences at JoVE.com

Automated Analysis of Dynamic Ca2+ Signals in Image Sequences

동적 칼슘의 자동 분석<sup&gt; 2 +</sup이미지 시퀀스에서&gt; 신호

Here a novel region of interest analysis protocol based on sorting best-fit ellipses assigned to regions of positive signal within two-dimensional time lapse image sequences is demonstrated. This algorithm may enable investigators to comprehensively analyze physiological Ca2+ signals with minimal user input and bias.

Intracellular Ca2+ signals are commonly studied with fluorescent Ca2+ indicator dyes and microscopy techniques. However, quantitative analysis of Ca2+ ...

Research

JoVE Journal

Biology

Automated Analysis of Dynamic Ca2+ Signals in Image Sequences

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

만성 실험에 장착 전극 또는 Microdialysis 프로브를위한 라이트 - 치료 치과 접착제 수지의 응용

In chronic recording experiments, self-curing dental acrylic resins have been used as a mounting base of electrodes or microdialysis-probes. Since these ...

연구

생물학

Semi-automated Optical Heartbeat Analysis of Small Hearts

작은 하트의 세미 - 자동 광학 도면 분석

We have developed a method for analyzing high speed optical recordings from Drosophila, zebrafish and embryonic mouse hearts (Fink, et. al., 2009). Our ...

Mosaic Zebrafish Transgenesis for Evaluating Enhancer Sequences

향상제 시퀀스를 평가하기위한 모자이크 Zebrafish의 Transgenesis

The completion of the human genome sequence, along with that of many other species, has highlighted the challenge of ascribing specific function to non ...

Robotics and Dynamic Image Analysis for Studies of Gene Expression in Plant Tissues

로보틱스 및 식물 조직에서 유전자 발현의 연구 동적 이미지 분석

Gene expression in plant tissues is typically studied by destructive extraction of compounds from plant tissues for in vitro analyses. The methods ...

Techniques for Imaging Ca2+ Signaling in Human Sperm

Techniques for Imaging Ca2+ Signaling in Human Sperm

이미징 CA의 기술 2 + 인간 정자의 시그널링

Fluorescence microscopy of cells loaded with fluorescent, Ca2+-sensitive dyes is used for measurement of spatial and temporal aspects of Ca2+ signaling in ...

ReAsH/FlAsH Labeling and Image Analysis of Tetracysteine Sensor Proteins in Cells

ReAsH / 플래시 라벨링 및 전지 Tetracysteine​​ 센서 단백질의 이미지 분석

Fluorescent proteins and dyes are essential tools for the study of protein trafficking, localization and function in cells.  While fluorescent 
proteins ...

Measuring Spatial and Temporal Ca2+ Signals in Arabidopsis Plants

Measuring Spatial and Temporal Ca2+ Signals in Arabidopsis Plants

측정 공간적 칼슘<sup&gt; 2 +</sup애기 장대 식물에서&gt; 신호

Developmental and environmental cues induce Ca2+ fluctuations in plant cells. Stimulus-specific spatial-temporal Ca2+ patterns are sensed by cellular Ca2+ ...

Imaging Local Ca2+ Signals in Cultured Mammalian Cells

Imaging Local Ca2+ Signals in Cultured Mammalian Cells

이미징 로컬 CA<sup&gt; 2 +</sup&gt; 배양 된 포유 동물 세포에서 신호

Cytosolic Ca2+ ions regulate numerous aspects of cellular activity in almost all cell types, controlling processes as wide-ranging as gene transcription, ...

High-resolution Time-lapse Imaging and Automated Analysis of Microtubule Dynamics in Living Human Umbilical Vein Endothelial Cells

고해상도 시간 경과 이미징 및 생활 인간 제대 정맥 내피 세포의 미세 소관 역학의 자동 분석

The physiological process by which new vasculature forms from existing vasculature requires specific signaling events that trigger morphological changes ...

Clock Scan Protocol for Image Analysis: ImageJ Plugins

이미지 분석을위한 클록 스캔 프로토콜 : ImageJ Plugins

The clock scan protocol for image analysis is an efficient tool to quantify the average pixel intensity within, at the border, and outside (background) a ...