Teitell 연구실에서 인간 배아 줄기 세포 연구는 재생 의료에 대한 캘리포니아 연구소 (CIRM) 씨앗 부여 RS1 - 00313에 의해 지원됩니다. 우리는 UCLA, 특히 박사 Amander 클라크 박사 제롬 잭, 우리의 연구들의 지원 UCLA 브로드 연구소 줄기 세포 핵심 시설의 멤버에 재생 의료 및 줄기 세포 연구의 브로드 센터의 회원을 감사드립니다.

hESC 문화 일상 유지 보수 <ol><li> hESC 문화 미디어는 모든 24 시간을 변경해야합니다. 4 ° C에 저장된 ES 미디어 주식 병에서 (6 잘 플레이트 당 ~ 20ml) 필요한 솔루션의 금액, 50ml 팰컨 관에서 개최하고, ° C 물 목욕 37에 따뜻한를 꺼내. 미디어가 따뜻하게되면 10ng/ml의 최종 농도가 4에 저장된 bFGF ° C를 추가합니다. ° C 즉시 사용 후 4 다시 bFGF 주식을 버려! </li><li> 모든 6 자 접시에서 제거하지만, 미디어의 500μl를 ~. 소용돌이 제거 파편을 일시 중 지할 수있는 문화 접시를해야합니다. hESC 문화 미디어에서 bFGF가 철저하게 혼합되어 있는지 확인하고 6 자 판의 각 잘 돌아 신선한 미디어 3ml를 추가합니다. 인큐베이터에있는 플레이트 다시 꽂아. </li></ol> Matrigel에 MEFs에서 분리 hESCs 보통 MEFs에 hESCs의 합류 6 자 판은 6 - 잘 접시는 우물이 4-5일 분리 후 다시 합류되고 함께 Matrigel에 1시 3분부터 1시 2분까지을 분할 수 있습니다. <ol><li> Matrigel, MEF - 냉방 미디어 (CM)에 분할 hESCs는 pluripotency 유지하는 데 사용됩니다 때. MEF - 냉방 미디어가 사전에 이루어집니다. 첫날, 1.5 × 10 7 γ - 반구 MEFs는 T75 플라스크에 씨앗을 품고 있습니다. 두 번째 날에는 MEFs는 실온 1 × PBS, pH를 7.4로 한 번 씻어하고 있으며, 다음 5ng/ml bFGF와 보충 ES 미디어의 15ml는 술병에 추가됩니다. (참고 : MEFs가 작은 또는 큰 flasks로 도금 수 있지만 세포 밀도와 ES 미디어의 볼륨 간의 비율이 일정해야합니다.) 플라스크가 다른 24 시간을위한 37 ° C에서 incubated입니다. 셋째 날, CM은 5ng/ml bFGF와 보충 신선한 ES 미디어 15ml로 수집 및 교체됩니다. 수집된 CM은 4 ° C.에 저장됩니다 MEFs 중 하나 도금에서 MEF - 냉방 미디어 15 × 7 = 105ml를 생성하기 위해 7 연패 일 동안 수확하고 있습니다. 7 일 후에 모든 CM의 분수가 결합되어, 살균, 여과 aliquoted 및 -20 ° C.에 저장된 저장하고 1 달 동안 사용할 수 설명된 CM 미디어가 준비했습니다. </li><li> hESC 분리하기 전에 어느 날, ° C는 하루 해동 4에서 eppendorf 튜브에 Matrigel의 aliquots 넣어 (한 나누어지는가 Matrigel의 76.2mg가 포함되어 있으며,이 하나의 6 - 플레이트 잘에 필요한 금액입니다.) 분할의 날, 한 6 자 접시 해동 Matrigel 중 하나 약병을 얼음에 차가운 DMEM/F12 미디어의 병을과 6ml를 넣어. DMEM/F12 미디어에 Matrigel을 전송하고 잘 섞는다. 6 잘 접시의 각각 잘 수있는 솔루션의 1ml을 추가합니다. 소용돌이 플레이트 표면에 Matrigel을 배포하고 분할 hESCs 전에 적어도 1 시간을 위해 실내 온도에서 Matrigel - 커버 플레이트를 부화. </li><li> MEFs에 hESCs는 1 × PBS, pH를 7.4로 한번 세탁하고 있습니다. 따뜻한 collagenase IV (1mg/ml)의 이후 1ml는 6 잘 플레이트의 각 잘에 추가되고 다음 판은 37 incubated 수 있습니다 ° C를 50-10 분. </li><li> 각 잘하는 bFGF없이 ES 미디어의 1ml을 추가합니다. 접시에서 줄기 세포를 날려 버릴 1ml 피펫을 사용합니다. 50ml 매는 튜브로 hESCs과 죽은 MEFs의 대단히 짧은 시간을 포함하는 모든 미디어를 수집합니다. MEFs가 뜨는에 정지 상태 동안 hESC의 대단히 짧은 시간이 튜브 하단의 펠렛을 형성 있도록 세포의 먼지 입자들이 큰 덩어리 5-10 분 정착하자. 뜨는을 취소하고, 5 분 200g에 실온에서 원심 분리 다음 bFGF을 부족한 ES 미디어를 사용하여 hESC 펠렛을 resuspending로 씻으십시오. </li><li> 판 Matrigel 접시에있는 줄기 세포를하려면 먼저 실온 DMEM/F12 (물론 당 1ml)과 잘 따라 10ng/ml bFGF와 보충 CM의 2.5ml을 추가로 Matrigel 접시를 씻으십시오. 대단히 짧은 시간이 균일하고 크기가 작은이 될 때까지 10ng/ml bFGF, 피펫 세포 현탁액 위아래로 몇 시간을 보충 CM의 적절한 볼륨으로 펠렛을 Resuspend. Matrigel 접시 잘 당 0.5ml로 나누어지는 정지합니다. Matrigel에 식민지 밀도가 MEFs에 대한 일반적인 분할하여 식민지의 밀도보다 높은됩니다. 37 ° C 조직 문화 인큐베이터에서 접시를 놓습니다. </li><li> Matrigel에 hESCs을 유지하려면, 10ng/ml bFGF와 함께 보충 CM 미디어는 최대 4-5일하는 모든 24 시간을 변경합니다. </li></ol>

<ol>
	<li>Thomson, J. a. m. e. s. A., Itskovitz-Eldor, J. o. s. e. p. h., Shapiro, S. a. n. d. e. r. S., Waknitz, M. i. c. h. e. l. l. e. A., Swiergiel, J. e. n. n. i. f. e. r. J., Marshall, V. i. v. i. e. n. n. e. S., Jones, J. e. f. f. r. e. y. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Embryonic+Stem+Cell+Lines+Derived+from+Human+Blastocysts++.">Embryonic Stem Cell Lines Derived from Human Blastocysts .</a> Science. 282, 1145-1147 (1998).</li><li>Xu, C. h. u. n. h. u. i., Inokuma, M. a. r. g. a. r. e. t. S., Denham, J. e. r. r. o. d., Golds, K. a. t. h. a. l. e. e. n., Kundu, P. r. a. t. i. m. a., Gold, J. o. s. e. p. h. D., Carpenter, M. e. l. i. s. s. a. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Feeder-free+growth+of+undifferentiated+human+embryonic+stem+cells.">Feeder-free growth of undifferentiated human embryonic stem cells.</a> Nature Biotechnology. 19, 971-974 (2001).</li></ol>

이 동영상은 어떻게 통과 hESCs에 MEF 플레이트에서 피더 셀 - 무료 Matrigel 번호판을 보여줍니다. Matrigel에 식민지 밀도가 MEFs에 대한 일반적인 분할하여 식민지의 밀도보다 높은됩니다. 그러한 월 4 SSEA - 4로 hESC pluripotency 마커에 대한 Immunofluorescence 염색법과 현미경이나 흐름 cytometry는 피더 무료 문화 조건에 undifferentiated 상태에서 hESCs의 유지를 확인하기 위해 필요합니다.

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		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>Knockout Serum Replacer (KSR)</td>
<td>Reagent</td>
<td>Gibco</td>
<td>10828-028</td>
<td>&nbsp;</td>
<tr>
<td>DMEM/F12</td>
<td>Reagent</td>
<td>Gibco</td>
<td>11330-057</td>
<td>&nbsp;</td>
<tr>
<td> Non-essential Amino Acids</td>
<td>Reagent</td>
<td>Gibco</td>
<td>11140-050</td>
<td>&nbsp;</td>
<tr>
<td>GlutaMax </td>
<td>Reagent</td>
<td>Gibco</td>
<td>35050-061</td>
<td>&nbsp;</td>
<tr>
<td>DMEM</td>
<td>Reagent</td>
<td>Gibco</td>
<td>11995-065</td>
<td>&nbsp;</td>
<tr>
<td>FBS</td>
<td>Reagent</td>
<td>Clontech</td>
<td>631107</td>
<td>&nbsp;</td>
<tr>
<td>L-glutamine</td>
<td>Reagent</td>
<td>Gibco</td>
<td>25030-081</td>
<td>&nbsp;</td>
<tr>
<td>BME</td>
<td>Reagent</td>
<td>Fisher</td>
<td>BP176-100</td>
<td>&nbsp;</td>
<tr>
<td>bFGF</td>
<td>Reagent</td>
<td>R&D Systems</td>
<td>233-FB-025</td>
<td>&nbsp;</td>
<tr>
<td>Collagenase IV</td>
<td>Reagent</td>
<td>Gibco</td>
<td>17104-019</td>
<td>&nbsp;</td>
<tr>
<td>Dispase</td>
<td>Reagent</td>
<td>Stem Cell Technologies</td>
<td>17105-041</td>
<td>&nbsp;</td>
<tr>
<td>Penicillin / Streptomycin </td>
<td>Reagent</td>
<td>Gibco</td>
<td>15140-122</td>
<td>&nbsp;</td>
<tr>
<td>Gelatin</td>
<td>Reagent</td>
<td>Chemicon</td>
<td>ES-006-B</td>
<td>&nbsp;</td>
<tr>
<td>Matrigel</td>
<td>Reagent</td>
<td>BD Biosciences</td>
<td>354277</td>
<td>&nbsp;</td>
<tr>
<td>Oct-4 antibody</td>
<td>Reagent</td>
<td>Santa Cruz Biotechnology</td>
<td>SC-9081</td>
<td>&nbsp;</td>
<tr>
<td>anti-h/mSSEA-4 Phycoerythrin Conjugated Mouse IgG3</td>
<td>Reagent</td>
<td>R&D Systems</td>
<td>FAB1435P</td>
<td>&nbsp;</td>
<tr>
<td>FITCI-conjugated antirabbit IgG</td>
<td>Reagent</td>
<td>Jackson ImmunoResearch Laboratories. Inc.</td>
<td>715-095-152</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>
			<div>
					</div>

from mefs to matrigel 2: splitting hescs from mefs onto matrigel

이 동영상은 어떻게 MEF 플레이트에서 통과 hESCs에 피더 셀 - 무료 Matrigel 플레이트에 마우스 배아 fibroblast (MEF) 피더 세포에 인간 배아 줄기 세포 (hESCs)를 성장하는 방법을 보여줍니다.

Watch this Scientific Journal Video about From MEFs to Matrigel 2: Splitting hESCs from MEFs onto Matrigel at JoVE.com

From MEFs to Matrigel 2: Splitting hESCs from MEFs onto Matrigel

이 동영상은 피더 세포가없는 조건에서 어떻게 피더에서 연속 통과 hESCs 세포가없는 조건에 인간 배아 줄기 세포 (hESCs)의 성장을 유지하는 방법을 보여줍니다. hESC의 확인은 pluripotency immunofluorescence 현미경으로 피더 셀없는 조건을 재배도 증명됩니다. 3 부 2.

Matrigel에 MEFs에서 분리 hESCs : MEFs에서 Matrigel 2

This video demonstrates how to grow human embryonic stem cells (hESCs) on mouse embryonic fibroblast (MEF) feeder cells, how to passage hESCs from MEF ...

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11.4K 조회수.  University of California, Los Angeles. 이 동영상은 피더 세포가없는 조건에서 어떻게 피더에서 연속 통과 hESCs 세포가없는 조건에 인간 배아 줄기 세포 (hESCs)의 성장을 유지하는 방법을 보여줍니다. hESC의 확인은 pluripotency immunofluorescence 현미경으로 피더 셀없는 조건을 재배도 증명됩니다. 3 부 2.

비디오: From MEFs to Matrigel 2: Splitting hESCs from MEFs onto Matrigel

From MEFs to Matrigel I: Passaging hESCs in the Presence of MEFs

This video demonstrates how to grow human embryonic stem cells (hESCs) on mouse embryonic fibroblast (MEF) feeder cells.


This video demonstrates how to grow human embryonic stem cells (hESCs) on mouse embryonic fibroblast (MEF) feeder cells. Part 1 of 3.

MEFs부터를 Matrigel하기 : MEFs의 면전에서 Passaging hESCs를

This video demonstrates how to grow human embryonic stem cells (hESCs) on mouse embryonic fibroblast (MEF) feeder cells.
...

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생물학

Generating iPS Cells from MEFS through Forced Expression of Sox-2, Oct-4, c-Myc, and Klf4

Pluripotency can be induced in differentiated murine by viral transduction of Oct4, Sox2, Klf4, and c-Myc (Takahashi and Yamanaka, 2006; Wernig, et al., 2007; Okita, et al., 2007; Maherali, et al., 2007). We have devised a reprogramming strategy in which these four transcription factors are expressed from doxycycline (dox)-inducible lentiviral vectors (Brambrink et al., 2008). Using these inducible constructs, we can derive induced pluripotent stem (iPS) cells from mouse embryonic fibroblasts (MEFs). In this video, we demonstrate the procedure for the generation of inducible lentiviruses that express the four transcription factors and show how to infect MEFs with these viruses in order to produce iPS cells. By using inducible lentiviruses, the expression of the four factors in controlled by the addition of doxycyline to the culture medium. The advantage of this system over the traditional retroviral infection is the ability to turn the genes on and off so that the kinetics of reprogramming and gene expression requirements can be analyzed in detail.

This video shows the procedure for generating induced pluripotent stem cells using inducible lentivirus that express Oct4, Sox2, c-Myc and Klf4.

삭스 - 2의 강제 표현을 통해 MEFS에서 IPS 세포를 생성, 10 - 4, C - Myc, 그리고 Klf4

Pluripotency can be induced in differentiated murine by viral transduction of Oct4, Sox2, Klf4, and c-Myc (Takahashi and Yamanaka, 2006;  Wernig, et al., ...

From MEFs to Matrigel 3: Passaging hESCs from Matrigel onto Matrigel

This video demonstrates how to maintain the growth of human embryonic stem cells (hESCs) in feeder cell-free conditions and how to continuously passage hESCs in feeder cell-free conditions. Confirmation of hESC pluripotency grown in feeder cell-free conditions by immunofluorescence microscopy is also demonstrated.

This video demonstrates how to maintain the growth of human embryonic stem cells (hESCs) in feeder cell-free conditions and how to continuously passage hESCs in feeder cell-free conditions. Confirmation of hESC pluripotency grown in feeder cell-free conditions by immunofluorescence microscopy is also demonstrated. Part 3 of 3.

MEFs에서 Matrigel 3 : Matrigel에 Matrigel에서 Passaging hESCs

This video demonstrates how to maintain the growth of human embryonic stem cells (hESCs) in feeder cell-free conditions and how to continuously passage ...

Cargo Loading onto Kinesin Powered Molecular Shuttles

Cells have evolved sophisticated molecular machinery, such as kinesin motor proteins and microtubule filaments, to support active intracellular transport of cargo. While kinesins tail domain binds to a variety of cargoes, kinesins head domains utilize the chemical energy stored in ATP molecules to step along the microtubule lattice. The long, stiff microtubules serve as tracks for long-distance intracellular transport.
These motors and filaments can also be employed in microfabricated synthetic environments as components of molecular shuttles 1. In a frequently used design, kinesin motors are anchored to the track surface through their tails, and functionalized microtubules serve as cargo carrying elements, which are propelled by these motors. These shuttles can be loaded with cargo by utilizing the strong and selective binding between biotin and streptavidin. The key components (biotinylated tubulin, streptavidin, and biotinylated cargo) are commercially available.
Building on the classic inverted motility assay 2, the construction of molecular shuttles is detailed here. Kinesin motor proteins are adsorbed to a surface precoated with casein; microtubules are polymerized from biotinylated tubulin, adhered to the kinesin and subsequently coated with rhodamine-labeled streptavidin. The ATP concentration is maintained at subsaturating concentration to achieve a microtubule gliding velocity optimal for loading cargo 3. Finally, biotinylated fluorescein-labeled nanospheres are added as cargo. Nanospheres attach to microtubules as a result of collisions between gliding microtubules and nanospheres adhering to the surface.
The protocol can be readily modified to load a variety of cargoes such as biotinylated DNA4, quantum dots 5 or a wide variety of antigens via biotinylated antibodies 4-6.

Molecular shuttles consisting of functionalized microtubules gliding on surface-adhered kinesin motor proteins can serve as a nanoscale transport system. Here, the assembly of a typical shuttle system is described.

Kinesin 전원 분자 셔틀로화물 로딩

Cells have evolved sophisticated molecular machinery, such as kinesin motor proteins and microtubule filaments, to support active intracellular transport ...

An Introduction to Worm Lab: from Culturing Worms to Mutagenesis

This protocol describes procedures to maintain nematodes in the laboratory and how to mutagenize them using two alternative methods: ethyl methane sulfonate (EMS) and 4, 5', 8-trimethylpsoralen combined with ultraviolet light (TMP/UV). Nematodes are powerful biological systems for genetics studies because of their simple body plan and mating system, which is composed of self-fertilizing hermaphrodites and males that can generate hundreds of progeny per animal. Nematodes are maintained in agar plates containing a lawn of bacteria and can be easily transferred from one plate to another using a pick. EMS is an alkylating agent commonly used to induce point mutations and small deletions, while TMP/UV mainly induces deletions. Depending on the species of nematode being used, concentrations of EMS and TMP will have to be optimized. To isolate recessive mutations of the nematode Pristionchus pacificus, animals of the F2 generation were visually screened for phenotypes. To illustrate these methods, we mutagenized worms and looked for Uncoordinated (Unc), Dumpy (Dpy) and Transformer (Tra) mutants.

Screening for mutants with phenotypic defects is a straightforward method for identifying genes that function in a given biological process. In this article we describe how to culture free living worms (e.g., Pristionchus pacificus) in the laboratory and show two different mutagenesis methods, EMS and TMP/UV.

웜 실험실 소개 : Culturing 웜에서 돌연변이 유발하는

This protocol describes procedures to maintain nematodes in the laboratory and how to mutagenize them using two alternative methods: ethyl methane ...

A Matrigel-Based Tube Formation Assay to Assess the Vasculogenic Activity of Tumor Cells

Over the past several decades, a tube formation assay using growth factor-reduced Matrigel has been typically employed to demonstrate the angiogenic activity of vascular endothelial cells in vitro1-5. However, recently growing evidence has shown that this assay is not limited to test vascular behavior for endothelial cells. Instead, it also has been used to test the ability of a number of tumor cells to develop a vascular phenotype6-8. This capability was consistent with their vasculogenic behavior identified in xenotransplanted animals, a process known as vasculogenic mimicry (VM)9. There is a multitude of evidence demonstrating that tumor cell-mediated VM plays a vital role in the tumor development, independent of endothelial cell angiogenesis6, 10-13. For example, tumor cells were found to participate in the blood perfused, vascular channel formation in tissue samples from melanoma and glioblastoma patients8, 10, 11. Here, we described this tubular network assay as a useful tool in evaluation of vasculogenic activity of tumor cells. We found that some tumor cell lines such as melanoma B16F1 cells, glioblastoma U87 cells, and breast cancer MDA-MB-435 cells are able to form vascular tubules; but some do not such as colon cancer HCT116 cells. Furthermore, this vascular phenotype is dependent on cell numbers plated on the Matrigel. Therefore, this assay may serve as powerful utility to screen the vascular potential of a variety of cell types including vascular cells, tumor cells as well as other cells.

A tube formation assay is used to evaluate vascular activity of tumor cells.

종양 세포의 Vasculogenic 활동을 평가 Matrigel 기반 튜브 형성 분석

Over the past several decades, a tube formation assay using growth factor-reduced Matrigel has been typically employed to demonstrate the angiogenic ...

Generation of Myospheres From hESCs by Epigenetic Reprogramming

Generation of a homogeneous and abundant population of skeletal muscle cells from human embryonic stem cells (hESCs) is a requirement for cell-based therapies and for a "disease in a dish" model of human neuromuscular diseases. Major hurdles, such as low abundance and heterogeneity of the population of interest, as well as a lack of protocols for the formation of three-dimensional contractile structures, have limited the applications of stem cells for neuromuscular disorders. We have designed a protocol that overcomes these limits by ectopic introduction of defined factors in hESCs - the muscle determination factor MyoD and SWI/SNF chromatin remodeling complex component BAF60C - that are able to reprogram hESCs into skeletal muscle cells. Here we describe the protocol established to generate hESC-derived myoblasts and promote their clustering into tridimensional miniaturized structures (myospheres) that functionally mimic miniaturized skeletal muscles7.

Here, we describe a protocol based on epigenetic reprogramming of human embryonic stem cells (hESCs) toward generating a homogeneous population of skeletal muscle progenitors that under permissive culture conditions form three-dimensional clusters of contractile myofibers (myospheres), which recapitulate biological features of human skeletal muscles.

성적인 프로그램을 다시 만들에 의해 인간 배아 줄기 세포에서 Myospheres의 생성

Generation of a homogeneous and abundant population of skeletal muscle cells from human embryonic stem cells (hESCs) is a requirement for cell-based ...

Xenopus laevis as a Model to Identify Translation Impairment

Protein synthesis is a fundamental process to gene expression impacting diverse biological processes notably adaptation to environmental conditions. The initiation step, which involves the assembly of the ribosomal subunits at the mRNA initiation codon, involved initiation factor including eIF4G1. Defects in this rate limiting step of translation are linked to diverse disorders. To study the potential consequences of such deregulations, Xenopus laevis oocytes constitute an attractive model with high degrees of conservation of essential cellular and molecular mechanisms with human. In addition, during meiotic maturation, oocytes are transcriptionally repressed and all necessary proteins are translated from preexisting, maternally derived mRNAs. This inexpensive model enables exogenous mRNA to become perfectly integrated with an effective translation. Here is described a protocol for assessing translation with a factor of interest (here eIF4G1) using stored maternal mRNA that are the first to be polyadenylated and translated during oocyte maturation as a physiological readout. At first, mRNA synthetized by in vitro transcription of plasmids of interest (here eIF4G1) are injected in oocytes and kinetics of oocyte maturation by Germinal Vesicle Breakdown detection is determined. The studied maternal mRNA target is the serine/threonine-protein-kinase mos. Its polyadenylation and its subsequent translation are investigated together with the expression and phosphorylation of proteins of the mos signaling cascade involved in oocyte maturation. Variations of the current protocol to put forward translational defects are also proposed to emphasize its general applicability. In light of emerging evidence that aberrant protein synthesis may be involved in the pathogenesis of neurological disorders, such a model provides the opportunity to easily assess this impairment and identify new targets.

Xenopus laevis as a Model to Identify Translation Impairment

Protein synthesis control occurs mainly at the translation initiation step, deficiencies in which are linked to diverse disorders. To better understand their etiology, we described here a protocol using Xenopus laevis oocytes assessing the translation of mos transcript in the presence of a mutant of translation initiation factor eIF4G1.

Xenopus의 번역 손상을 식별 할 수있는 모델로 laevis의

Protein synthesis is a fundamental process to gene expression impacting diverse biological processes notably adaptation to environmental conditions. The ...

Using Caco-2 Cells to Study Lipid Transport by the Intestine

Studies of dietary fat absorption are generally conducted by using an animal model equipped with a lymph cannula. Although this animal model is widely accepted as the in vivo model of dietary fat absorption, the surgical techniques involved are challenging and expensive. Genetic manipulation of the animal model is also costly and time consuming. The alternative in vitro model is arguably more affordable, timesaving, and less challenging. Importantly, the in vitro model allows investigators to examine the enterocytes as an isolated system, reducing the complexity inherent in the whole organism model. This paper describes how human colon carcinoma cells (Caco-2) can serve as an in vitro model to study the enterocyte transport of lipids, and lipid-soluble drugs and vitamins. It explains the proper maintenance of Caco-2 cells and the preparation of their lipid mixture; and it further discusses the valuable option of using the permeable membrane system. Since differentiated Caco-2 cells are polarized, the main advantage of using the permeable membrane system is that it separates the apical from the basolateral compartment. Consequently, the lipid mixture can be added to the apical compartment while the lipoproteins can be collected from the basolateral compartment. In addition, the effectiveness of the lentivirus expression system in upregulating gene expression in Caco-2 cells is discussed. Lastly, this paper describes how to confirm the successful isolation of intestinal lipoproteins by transmission electron microscopy (TEM).

Caco-2 cells can serve as an in vitro model to study the enterocyte transport of lipids, and lipid-soluble drugs/vitamins. The permeable membrane system separates the apical from the basolateral compartment, while the lentivirus expression system offers an effective gene overexpression method. The isolation of lipoproteins is confirmed by TEM.

소장에 의해 지질 전송을 연구하기 위해 카코 2 셀을 사용하여

Studies of dietary fat absorption are generally conducted by using an animal model equipped with a lymph cannula. Although this animal model is widely ...

Magnetic-Activated Cell Sorting Strategies to Isolate and Purify Synovial Fluid-Derived Mesenchymal Stem Cells from a Rabbit Model

Mesenchymal stem cells (MSCs) are the main cell source for cell-based therapy. MSCs from articular cavity synovial fluid could potentially be used for cartilage tissue engineering. MSCs from synovial fluid (SF-MSCs) have been considered promising candidates for articular regeneration, and their potential therapeutic benefit has made them an important research topic of late. SF-MSCs from the knee cavity of the New Zealand white rabbit can be employed as an optimized translational model to assess human regenerative medicine. By means of CD90-based magnetic activated cell sorting (MACS) technologies, this protocol successfully obtains rabbit SF-MSCs (rbSF-MSCs) from this rabbit model and further fully demonstrates the MSC phenotype of these cells by inducing them to differentiate to osteoblasts, adipocytes, and chondrocytes. Therefore, this approach can be applied in cell biology research and tissue engineering using simple equipment and procedures.

This article presents a simple and economic protocol for the straightforward isolation and purification of mesenchymal stem cells from New Zealand white rabbit synovial fluid.

마그네틱 활성화 전략을 분리 하 고 정화 활 액 액체 파생 된 중간 엽 줄기 세포는 토끼 모델에서 정렬 셀

Mesenchymal stem cells (MSCs) are the main cell source for cell-based therapy. MSCs from articular cavity synovial fluid could potentially be used for ...