Name: isolation method for long-term and short-term hematopoietic stem cells
Uploaded: 2023-05-19T13:00:00
Description: Watch this Scientific Journal Video about Isolation Method for Long-Term and Short-Term Hematopoietic Stem Cells at JoVE.com

我们非常感谢Hiroshi Kioninari在RIKEN BDR提供的动物护理和提供受体小鼠，以及神户大学实验室管理的小贺瞳，长坂加代子和宫桥正树。作者也非常感谢对这项工作的持续支持。Masanori Miyanishi得到了日本科学促进会（JSPS）KAKENHI资助号JP17K07407和JP20H03268，Mochida医学和药物研究纪念基金会，日本生命科学基金会，武田科学基金会，安斯泰来代谢紊乱研究基金会和AMED-PRIME，AMED的支持，资助号JP18gm6110020。 坂卷太郎由JSPS KAKENHI授权号JP21K20669和JP22K16334支持，并得到以下机构的支持JSPS核心到核心计划和RIKEN初级研究助理计划。Katsuyuki Nishi得到了JSPS授权号KAKENHI JP18J13408的支持。

所有描述的动物实验都得到了RIKEN生物系统动力学研究中心的批准。
1.受体小鼠的预处理
<ol><li>准备8-10周龄的雄性C57BL / 6同源小鼠作为受体小鼠。受体小鼠的数量取决于实验方案。我们通常为每种情况准备10-20只小鼠。<ol><li>用补充有恩诺沙星（170mg / L）的灭菌水喂养小鼠。由于受辐照的受体小鼠极易感染，因此请保持笼子尽可能清洁。 注意：在照射前24小时?...

<ol>
	<li>Weissman, I. L., Shizuru, J. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+origins+of+the+identification+and+isolation+of+hematopoietic+stem+cells,+and+their+capability+to+induce+donor-specific+transplantation+tolerance+and+treat+autoimmune+diseases.">The origins of the identification and isolation of hematopoietic stem cells, and their capability to induce donor-specific transplantation tolerance and treat autoimmune diseases.</a> Blood. 112 (9), 3543-3553 (2008).</li><li>Majeti, R., Park, C. Y., Weissman, I. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+a+hierarchy+of+multipotent+hematopoietic+progenitors+in+human+cord+blood.">Identification of a hierarchy of multipotent hematopoietic progenitors in human cord blood.</a> Cell Stem Cell. 1 (6), 635-645 (2007).</li><li>Spangrude, G. J., Heimfeld, S., Weissman, I. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Purification+and+characterization+of+mouse+hematopoietic+stem+cells.">Purification and characterization of mouse hematopoietic stem cells.</a> Science. 241 (4861), 58-62 (1988).</li><li>Ogawa, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Expression+and+function+of+c-kit+in+hemopoietic+progenitor+cells.">Expression and function of c-kit in hemopoietic progenitor cells.</a> Journal of Experimental Medicine. 174 (1), 63-71 (1991).</li><li>Ikuta, K., Weissman, I. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evidence+that+hematopoietic+stem+cells+express+mouse+c-kit+but+do+not+depend+on+steel+factor+for+their+generation.">Evidence that hematopoietic stem cells express mouse c-kit but do not depend on steel factor for their generation.</a> Proceedings of the National Academy of Sciences of the United States of America. 89 (4), 1502-1506 (1992).</li><li>Osawa, M., Hanada, K., Hamada, H., Nakauchi, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Long-term+lymphohematopoietic+reconstitution+by+a+single+CD34-low/negative+hematopoietic+stem+cell.">Long-term lymphohematopoietic reconstitution by a single CD34-low/negative hematopoietic stem cell.</a> Science. 273 (5272), 242-245 (1996).</li><li>Christensen, J. L., Weissman, I. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Flk-2+is+a+marker+in+hematopoietic+stem+cell+differentiation:+A+simple+method+to+isolate+long-term+stem+cells.">Flk-2 is a marker in hematopoietic stem cell differentiation: A simple method to isolate long-term stem cells.</a> Proceedings of the National Academy of Sciences of the United States of America. 98 (25), 14541-14546 (2001).</li><li>Kiel, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SLAM+family+receptors+distinguish+hematopoietic+stem+and+progenitor+cells+and+reveal+endothelial+niches+for+stem+cells.">SLAM family receptors distinguish hematopoietic stem and progenitor cells and reveal endothelial niches for stem cells.</a> Cell. 121 (7), 1109-1121 (2005).</li><li>Morrison, S. J., Weissman, I. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+long-term+repopulating+subset+of+hematopoietic+stem+cells+is+deterministic+and+isolatable+by+phenotype.">The long-term repopulating subset of hematopoietic stem cells is deterministic and isolatable by phenotype.</a> Immunity. 1 (8), 661-673 (1994).</li><li>Spangrude, G. J., Brooks, D. M., Tumas, D. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Long-term+repopulation+of+irradiated+mice+with+limiting+numbers+of+purified+hematopoietic+stem+cells:+In+vivo+expansion+of+stem+cell+phenotype+but+not+function.">Long-term repopulation of irradiated mice with limiting numbers of purified hematopoietic stem cells: In vivo expansion of stem cell phenotype but not function.</a> Blood. 85 (4), 1006-1016 (1995).</li><li>Dykstra, B., Olthof, S., Schreuder, J., Ritsema, M., de Haan, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clonal+analysis+reveals+multiple+functional+defects+of+aged+murine+hematopoietic+stem+cells.">Clonal analysis reveals multiple functional defects of aged murine hematopoietic stem cells.</a> Journal of Experimental Medicine. 208 (13), 2691-2703 (2011).</li><li>Grover, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single-cell+RNA+sequencing+reveals+molecular+and+functional+platelet+bias+of+aged+haematopoietic+stem+cells.">Single-cell RNA sequencing reveals molecular and functional platelet bias of aged haematopoietic stem cells.</a> Nature Communications. 7, 11075 (2016).</li><li>Kataoka, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evi1+is+essential+for+hematopoietic+stem+cell+self-renewal,+and+its+expression+marks+hematopoietic+cells+with+long-term+multilineage+repopulating+activity.">Evi1 is essential for hematopoietic stem cell self-renewal, and its expression marks hematopoietic cells with long-term multilineage repopulating activity.</a> Journal of Experimental Medicine. 208 (12), 2403-2416 (2011).</li><li>Gazit, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fgd5+identifies+hematopoietic+stem+cells+in+the+murine+bone+marrow.">Fgd5 identifies hematopoietic stem cells in the murine bone marrow.</a> Journal of Experimental Medicine. 211 (7), 1315-1331 (2014).</li><li>Acar, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Deep+imaging+of+bone+marrow+shows+non-dividing+stem+cells+are+mainly+perisinusoidal.">Deep imaging of bone marrow shows non-dividing stem cells are mainly perisinusoidal.</a> Nature. 526 (7571), 126-130 (2015).</li><li>Chen, J. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hoxb5+marks+long-term+haematopoietic+stem+cells+and+reveals+a+homogenous+perivascular+niche.">Hoxb5 marks long-term haematopoietic stem cells and reveals a homogenous perivascular niche.</a> Nature. 530 (7589), 223-227 (2016).</li><li>Ema, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantification+of+self-renewal+capacity+in+single+hematopoietic+stem+cells+from+normal+and+Lnk-deficient+mice.">Quantification of self-renewal capacity in single hematopoietic stem cells from normal and Lnk-deficient mice.</a> Developmental Cell. 8 (6), 907-914 (2005).</li><li>Morita, Y., Ema, H., Nakauchi, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heterogeneity+and+hierarchy+within+the+most+primitive+hematopoietic+stem+cell+compartment.">Heterogeneity and hierarchy within the most primitive hematopoietic stem cell compartment.</a> Journal of Experimental Medicine. 207 (6), 1173-1182 (2010).</li><li>Yamamoto, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clonal+analysis+unveils+self-renewing+lineage-restricted+progenitors+generated+directly+from+hematopoietic+stem+cells.">Clonal analysis unveils self-renewing lineage-restricted progenitors generated directly from hematopoietic stem cells.</a> Cell. 154 (5), 1112-1126 (2013).</li><li>Fathman, J. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Upregulation+of+CD11A+on+hematopoietic+stem+cells+denotes+the+loss+of+long-term+reconstitution+potential.">Upregulation of CD11A on hematopoietic stem cells denotes the loss of long-term reconstitution potential.</a> Stem Cell Reports. 3 (5), 707-715 (2014).</li><li>Oguro, H., Ding, L., Morrison, S. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SLAM+family+markers+resolve+functionally+distinct+subpopulations+of+hematopoietic+stem+cells+and+multipotent+progenitors.">SLAM family markers resolve functionally distinct subpopulations of hematopoietic stem cells and multipotent progenitors.</a> Cell Stem Cell. 13 (1), 102-116 (2013).</li><li>Haas, S., Trumpp, A., Milsom, M. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Causes+and+consequences+of+hematopoietic+stem+cell+heterogeneity.">Causes and consequences of hematopoietic stem cell heterogeneity.</a> Cell Stem Cell. 22 (5), 627-638 (2018).</li><li>Schroeder, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hematopoietic+stem+cell+heterogeneity:+Subtypes,+not+unpredictable+behavior.">Hematopoietic stem cell heterogeneity: Subtypes, not unpredictable behavior.</a> Cell Stem Cell. 6 (3), 203-207 (2010).</li><li>Muller-Sieburg, C. E., Sieburg, H. B., Bernitz, J. M., Cattarossi, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stem+cell+heterogeneity:+Implications+for+aging+and+regenerative+medicine.">Stem cell heterogeneity: Implications for aging and regenerative medicine.</a> Blood. 119 (17), 3900-3907 (2012).</li><li>Duran-Struuck, R., Dysko, R. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Principles+of+bone+marrow+transplantation+(BMT):+Providing+optimal+veterinary+and+husbandry+care+to+irradiated+mice+in+BMT+studies.">Principles of bone marrow transplantation (BMT): Providing optimal veterinary and husbandry care to irradiated mice in BMT studies.</a> Journal of the American Association for Laboratory Animal Science. 48 (1), 11-22 (2009).</li><li>Nishi, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+the+minimum+requirements+for+successful+haematopoietic+stem+cell+transplantation.">Identification of the minimum requirements for successful haematopoietic stem cell transplantation.</a> British Journal of Haematology. 196 (3), 711-723 (2022).</li><li>Sakamaki, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hoxb5+defines+the+heterogeneity+of+self-renewal+capacity+in+the+hematopoietic+stem+cell+compartment.">Hoxb5 defines the heterogeneity of self-renewal capacity in the hematopoietic stem cell compartment.</a> Biochemical and Biophysical Research Communications. 539, 34-41 (2021).</li></ol>

传统上，已经制备了细胞表面标记定义的HSCs来研究HSC的功能，例如自我更新能力和多效性19，20，21。然而，免疫表型定义的（谱系−c-Kit+Sca-1+CD150+CD34−/loFlk2−）HSC部分包含两个离散的HSC群体：LT-HSC和ST-HSC9，10。因此，对真?...

造血干细胞（HSCs）具有自我更新能力和多能性，位于造血层次结构的顶点1，2。1988年，Weissman及其同事首次证明可以使用流式细胞术3实现小鼠HSC的分离。随后，据报道，由细胞表面标志物组合定义的部分Lineage-c-Kit+Sca-1 + CD150 + CD34 / loFlk2−含有小鼠4，5，6，7，8中的所有HSC。
免疫表型定义的（谱系−c-Kit+Sca-1+CD150+CD34−/loFlk2−）HSC（以下简称pHSC）以前被认为是功能同质的。然而，最近的单细胞分析显示，pHSCs在其自我更新能力9，10和多能性11，12方面仍表现出异质性。具体而言，pHSC分数中似乎存在两个自我更新能力的人群：具有持续自我更新能力的长期造血干细胞（LT-HSCs）和具有短暂自我更新能力的短期造血干细胞（ST-HSCs）9，10。
迄今为止，区分LT-HSC和ST-HSC的自我更新能力的分子机制仍然知之甚少。根据细胞的自我更新能力分离两个细胞群并发现潜在的分子机制至关重要。还引入了几种报告系统来纯化LT-HSC13，14，15;然而，每个报告系统定义的LT-HSC纯度是可变的，迄今为止尚未实现独家LT-HSC纯化。
因此，开发LT-HSC和ST-HSC的分离系统将加速pHSC部分自我更新能力的研究。在分离LT-HSC和ST-HSCs时，一项使用多步骤，无偏倚筛选的研究确定了单个基因Hoxb5，该基因在pHSC部分16中异质表达。此外，对Hoxb5报告小鼠的骨髓分析显示，大约20%-25%的pHSC部分由Hoxb5 pos细胞组成。使用Hoxb5 pos pHSC和Hoxb5阴性pHSC的竞争性移植测定显示，只有Hoxb5pos pHSC具有长期自我更新能力，而Hoxb5阴性pHSC在短时间内失去其自我更新能力，表明Hoxb5在pHSC部分16中识别LT-HSC。
在这里，我们演示了使用 Hoxb5 报告系统分离LT-HSC和ST-HSC的分步协议。此外，我们提出了一种竞争性移植测定法来评估Hoxb5pos / neg pHSC的自我更新能力（图1）。该 Hoxb5 报告系统使我们能够前瞻性地分离LT-HSC和ST-HSC，并有助于了解LT-HSC特异性特征。

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	<tbody>
		<tr>
			<td>0.2 mL Strip of 8 Tubes, Dome Cap</td>
			<td>SSIbio</td>
			<td>3230-00</td>
			<td></td>
		</tr>
		<tr>
			<td>0.5M EDTA pH 8.0</td>
			<td>Iinvtrogen</td>
			<td>AM9260G</td>
			<td></td>
		</tr>
		<tr>
			<td>100 &#181;m Cell Strainer</td>
			<td>Falcon</td>
			<td>352360</td>
			<td></td>
		</tr>
		<tr>
			<td>30G insulin syringe</td>
			<td>BD</td>
			<td>326668</td>
			<td></td>
		</tr>
		<tr>
			<td>40 &#181;m Cell Strainer</td>
			<td>Falcon</td>
			<td>352340</td>
			<td></td>
		</tr>
		<tr>
			<td>5 mL Round Bottom Polystyrene Test Tube, with Cell Strainer Snap Cap</td>
			<td>FALCON</td>
			<td>352235</td>
			<td></td>
		</tr>
		<tr>
			<td>7-AAD Viability Staining Solution</td>
			<td>BioLegend</td>
			<td>420404</td>
			<td></td>
		</tr>
		<tr>
			<td>96 well U-Bottom</td>
			<td>FALCON</td>
			<td>351177</td>
			<td></td>
		</tr>
		<tr>
			<td>Anti-APC-MicroBeads</td>
			<td>Milteny biotec</td>
			<td>130-090-855</td>
			<td></td>
		</tr>
		<tr>
			<td>Aspirator with trap flask</td>
			<td>Biosan</td>
			<td>FTA-1</td>
			<td></td>
		</tr>
		<tr>
			<td>B220-Alexa Fluor 700 (RA3-6B2)</td>
			<td>BioLegend</td>
			<td>103232</td>
			<td></td>
		</tr>
		<tr>
			<td>B220-Biotin (RA3-6B2)</td>
			<td>BioLegend</td>
			<td>103204</td>
			<td></td>
		</tr>
		<tr>
			<td>B220-BV786 (RA3-6B2)</td>
			<td>BD Biosciences</td>
			<td>563894</td>
			<td></td>
		</tr>
		<tr>
			<td>B6.CD45.1 congenic mice&#160;</td>
			<td>Sankyo Labo Service</td>
			<td>N/A</td>
			<td></td>
		</tr>
		<tr>
			<td>Baytril 10%</td>
			<td>BAYER</td>
			<td>341106546</td>
			<td></td>
		</tr>
		<tr>
			<td>BD FACS Aria II special order system&#160;</td>
			<td>BD</td>
			<td>N/A</td>
			<td></td>
		</tr>
		<tr>
			<td>Brilliant stain buffer</td>
			<td>BD</td>
			<td>566349</td>
			<td></td>
		</tr>
		<tr>
			<td>CD11b-Alexa Fluor 700 (M1/70)</td>
			<td>BioLegend</td>
			<td>101222</td>
			<td></td>
		</tr>
		<tr>
			<td>CD11b-Biotin (M1/70)</td>
			<td>BioLegend</td>
			<td>101204</td>
			<td></td>
		</tr>
		<tr>
			<td>CD11b-BUV395 (M1/70)</td>
			<td>BD Biosciences</td>
			<td>563553</td>
			<td></td>
		</tr>
		<tr>
			<td>CD11b-BV711 (M1/70)</td>
			<td>BD Biosciences</td>
			<td>563168</td>
			<td></td>
		</tr>
		<tr>
			<td>CD127-Alexa Fluor 700 (A7R34)</td>
			<td>Invitrogen</td>
			<td>56-1271-82</td>
			<td></td>
		</tr>
		<tr>
			<td>CD150-BV421 (TC15-12F12.2)</td>
			<td>BioLegend</td>
			<td>115943</td>
			<td></td>
		</tr>
		<tr>
			<td>CD16/CD32-Alexa Fluor 700 (93)</td>
			<td>Invitrogen</td>
			<td>56-0161-82</td>
			<td></td>
		</tr>
		<tr>
			<td>CD34-Alexa Fluor 647 (RAM34)</td>
			<td>BD Biosciences</td>
			<td>560230</td>
			<td></td>
		</tr>
		<tr>
			<td>CD34-FITC (RAM34)</td>
			<td>Invitrogen</td>
			<td>11034185</td>
			<td></td>
		</tr>
		<tr>
			<td>CD3-Alexa Fluor 700 (17A2)</td>
			<td>BioLegend</td>
			<td>100216</td>
			<td></td>
		</tr>
		<tr>
			<td>CD3&#949; -Biotin (145-2C11)</td>
			<td>BioLegend</td>
			<td>100304</td>
			<td></td>
		</tr>
		<tr>
			<td>CD3&#949; -BV421 (145-2C11)</td>
			<td>BioLegend</td>
			<td>100341</td>
			<td></td>
		</tr>
		<tr>
			<td>CD45.1/CD45.2 congenic mice</td>
			<td>N/A</td>
			<td>N/A</td>
			<td>Bred in our Laboratory</td>
		</tr>
		<tr>
			<td>CD45.1-FITC (A20)</td>
			<td>BD Biosciences</td>
			<td>553775</td>
			<td></td>
		</tr>
		<tr>
			<td>CD45.2-PE (104)</td>
			<td>BD Biosciences</td>
			<td>560695</td>
			<td></td>
		</tr>
		<tr>
			<td>CD4-Alexa Fluor 700 (GK1.5)</td>
			<td>BioLegend</td>
			<td>100430</td>
			<td></td>
		</tr>
		<tr>
			<td>CD4-Biotin (GK1.5)</td>
			<td>BioLegend</td>
			<td>100404</td>
			<td></td>
		</tr>
		<tr>
			<td>CD8a-Alexa Fluor 700 (53-6.7)</td>
			<td>BioLegend</td>
			<td>100730</td>
			<td></td>
		</tr>
		<tr>
			<td>CD8a-Biotin (53-6.7)</td>
			<td>BioLegend</td>
			<td>100704</td>
			<td></td>
		</tr>
		<tr>
			<td>Centrifuge Tube 15ml</td>
			<td>NICHIRYO</td>
			<td>00-ETS-CT-15</td>
			<td></td>
		</tr>
		<tr>
			<td>Centrifuge Tube 50ml</td>
			<td>NICHIRYO</td>
			<td>00-ETS-CT-50</td>
			<td></td>
		</tr>
		<tr>
			<td>c-Kit-APC-eFluor780 (2B8)</td>
			<td>Invitrogen</td>
			<td>47117182</td>
			<td></td>
		</tr>
		<tr>
			<td>D-PBS (-) without Ca and Mg, liquid&#160;</td>
			<td>Nacalai</td>
			<td>14249-24</td>
			<td></td>
		</tr>
		<tr>
			<td>Fetal Bovine Serum</td>
			<td>Thermo Fisher</td>
			<td>10270106</td>
			<td></td>
		</tr>
		<tr>
			<td>Flk2-PerCP-eFluor710 (A2F10)</td>
			<td>eBioscience</td>
			<td>46135182</td>
			<td></td>
		</tr>
		<tr>
			<td>FlowJo version 10</td>
			<td>BD Biosciences&#160;</td>
			<td>https://www.flowjo.com/solutions/flowjo</td>
			<td></td>
		</tr>
		<tr>
			<td>Gmmacell 40 Exactor</td>
			<td>Best theratronics</td>
			<td>N/A</td>
			<td></td>
		</tr>
		<tr>
			<td>Gr-1-Alexa Fluor 700 (RB6-8C5)</td>
			<td>BioLegend</td>
			<td>108422</td>
			<td></td>
		</tr>
		<tr>
			<td>Gr-1-Biotin (RB6-8C5)</td>
			<td>BioLegend</td>
			<td>108404</td>
			<td></td>
		</tr>
		<tr>
			<td>Hoxb5-tri-mCherry mice (C57BL/6J background)&#160;</td>
			<td>N/A</td>
			<td>N/A</td>
			<td>Bred in our Laboratory</td>
		</tr>
		<tr>
			<td>IgG from rat serum, technical grade, &#62;=80% (SDS-PAGE), buffered aqueous solution</td>
			<td>Sigma-Aldrich</td>
			<td>I8015-100MG</td>
			<td></td>
		</tr>
		<tr>
			<td>isoflurane</td>
			<td>Pfizer</td>
			<td>4987-114-13340-3&#160;</td>
			<td></td>
		</tr>
		<tr>
			<td>Kimwipes S200</td>
			<td>NIPPON PAPER CRECIA&#160;</td>
			<td>6-6689-01</td>
			<td></td>
		</tr>
		<tr>
			<td>LS Columns</td>
			<td>Milteny biotec</td>
			<td>130-042-401</td>
			<td></td>
		</tr>
		<tr>
			<td>Lysis buffer&#160;</td>
			<td>BD</td>
			<td>555899</td>
			<td></td>
		</tr>
		<tr>
			<td>MACS&#160; MultiStand</td>
			<td>Milteny biotec</td>
			<td>130-042-303</td>
			<td></td>
		</tr>
		<tr>
			<td>Microplate for Tissue Culture (For Adhesion Cell) 6Well</td>
			<td>IWAKI</td>
			<td>3810-006</td>
			<td></td>
		</tr>
		<tr>
			<td>MidiMACS Separator</td>
			<td>Milteny biotec</td>
			<td>130-042-302</td>
			<td></td>
		</tr>
		<tr>
			<td>Mouse Pie Cages</td>
			<td>Natsume Seisakusho</td>
			<td>KN-331</td>
			<td></td>
		</tr>
		<tr>
			<td>Multipurpose refrigerated Centrifuge</td>
			<td>TOMY</td>
			<td>EX-125</td>
			<td></td>
		</tr>
		<tr>
			<td>NARCOBIT-E (II)</td>
			<td>Natsume Seisakusho</td>
			<td>KN-1071-I</td>
			<td></td>
		</tr>
		<tr>
			<td>NK-1.1-PerCP-Cy5.5 (PK136)</td>
			<td>BioLegend</td>
			<td>108728</td>
			<td></td>
		</tr>
		<tr>
			<td>Penicillin-Streptomycin Mixed Solution</td>
			<td>nacalai</td>
			<td>26253-84</td>
			<td></td>
		</tr>
		<tr>
			<td>Porcelain Mortar &#966;120mm with Pestle</td>
			<td>Asone</td>
			<td>6-549-03</td>
			<td></td>
		</tr>
		<tr>
			<td>Protein LoBind Tube 1.5 mL&#160;</td>
			<td>Eppendorf</td>
			<td>22431081</td>
			<td></td>
		</tr>
		<tr>
			<td>Sca-I-BUV395 (D7)</td>
			<td>BD Biosciences</td>
			<td>563990</td>
			<td></td>
		</tr>
		<tr>
			<td>Stainless steel scalpel blade</td>
			<td>FastGene</td>
			<td>FG-B2010</td>
			<td></td>
		</tr>
		<tr>
			<td>Streptavidin-BUV737</td>
			<td>BD Biosciences</td>
			<td>612775</td>
			<td></td>
		</tr>
		<tr>
			<td>SYTOX-red</td>
			<td>Invitrogen</td>
			<td>S34859</td>
			<td></td>
		</tr>
		<tr>
			<td>Tailveiner Restrainer for Mice standard</td>
			<td>Braintree</td>
			<td>TV-150 STD</td>
			<td></td>
		</tr>
		<tr>
			<td>TCRb-BV421 (H57-597)</td>
			<td>BioLegend</td>
			<td>109230</td>
			<td></td>
		</tr>
		<tr>
			<td>Ter-119-Alexa Fluor 700 (TER-119)</td>
			<td>BioLegend</td>
			<td>116220</td>
			<td></td>
		</tr>
		<tr>
			<td>Ter-119-Biotin (TER-119)</td>
			<td>BioLegend</td>
			<td>116204</td>
			<td></td>
		</tr>
		<tr>
			<td>Terumo 5ml Concentric Luer-Slip Syringe</td>
			<td>TERUMO</td>
			<td>SS-05LZ</td>
			<td></td>
		</tr>
		<tr>
			<td>Terumo Hypodermic Needle 23G x 1</td>
			<td>TERUMO</td>
			<td>NN-2325-R</td>
			<td></td>
		</tr>
	</tbody>
</table>

isolation method for long-term and short-term hematopoietic stem cells

自我更新能力和多谱系分化潜力通常被认为是造血干细胞（HSCs）的决定性特征。然而，大量研究表明，HSC隔室中存在功能异质性。最近的单细胞分析报告了HSC区室内具有不同细胞命运的HSC克隆，这被称为偏倚HSC克隆。异质性或可重复性差的结果背后的机制知之甚少，特别是关于通过常规免疫染色移植纯化的HSC级分时的自我更新时间。因此，建立一种可重复的长期HSC（LT-HSC）和短期HSC（ST-HSC）的分离方法，由其自我更新的长度定义，对于克服这个问题至关重要。使用无偏的多步骤筛选，我们鉴定了一种转录因子 Hoxb5，它可能是小鼠造血系统中LT-HSC的独家标志物。基于这一发现，我们建立了 Hoxb5 报告小鼠系，并成功分离出LT-HSC和ST-HSC。在这里，我们描述了使用 Hoxb5 报告系统分离LT-HSC和ST-HSC的详细协议。这种分离方法将有助于研究人员更好地了解自我更新的机制以及HSC隔室中这种异质性的生物学基础。

以前，已经使用竞争性移植测定法测量了自我更新能力，其中供体HSC被认为只有在观察到受体外周血中的多谱系供体细胞时才保持其自我更新能力17。此外，一些报告将LT-HSC定义为在第二次骨髓移植几个月后继续产生外周血细胞的细胞10，18。因此，为了比较它们的自我更新能力，将从Hoxb5报告小鼠中分离出的10只Hoxb5pos或Hoxb5...

Watch this Scientific Journal Video about Isolation Method for Long-Term and Short-Term Hematopoietic Stem Cells at JoVE.com 

Isolation Method for Long-Term and Short-Term Hematopoietic Stem Cells (Video) | JoVE 

我们提出了使用Hoxb5报告系统分离长期造血干细胞（LT-HSC）和短期造血干细胞（ST-HSC）的分步方案。

长期和短期造血干细胞的分离方法

Self-renewal capacity and multi-lineage differentiation potential are generally regarded as the defining characteristics of hematopoietic stem cells ...

长期和短期造血干细胞或HSC分离方法将有助于研究人员更好地了解HSC区室中细胞更新机制和异质性的生物学基础。鉴定出转录因子Hoxb5，可能是长期HSC的独家标志物。在此基础上，建立了Hoxb5报告小鼠系，并成功分离出长期和短期HSC。要开始收集供体骨髓细胞，请用70%乙醇对研钵和研杵进行消毒，并让它们完全干燥。用不含钙和镁的PBS补充剂组成的细胞染色缓冲液平衡那些。将从供体雄性Hoxb5-tri-mCherry小鼠中分离的骨头放入研钵中，并加入三毫升细胞染色缓冲液。用杵刷开骨头，然后通过轻柔移液分解细胞团块，并将细胞悬液通过 100 微米细胞过滤器转移到 50 毫升管中。用新鲜的细胞染色缓冲液重复该过程，直到溶液变得澄清。通常，重复三次就足以产生清晰的解决方案。从CD45.1.2同源小鼠中分离股骨和胫骨后，用锋利的无菌剪刀切割骨骼的两端。使用装有装有冰冷细胞悬浮缓冲液的 5 毫升注射器的 23 号针头，将骨髓冲洗到含有细胞悬液缓冲液的无菌细胞培养皿中。通过轻柔移液分解细胞团块，然后使用 P1000 移液器通过 40 微米细胞过滤器过滤细胞悬液。对于浇口设置，按照文本中提供的说明制备样品，并将其转移到带有35微米细胞过滤器卡扣帽的圆底聚苯乙烯试管中。按照制造商的说明，在分析前准备并向样品中添加死细胞菌株试剂。然后，打开流式细胞仪并按照制造商的说明启动分析软件。然后，按加载开始获取数据。排除双联体、死细胞和谱系阳性细胞后，门禁系阴性、c-kit 阳性、Sca-1 阳性部分。接下来，排除 Flk2 阳性部分。然后对 CD150 阳性、CD34 阴性或低组分中的 Hoxb5 阳性或 Hoxb5 阴性 pHSC 进行门控。接下来，准备一个1.5毫米低蛋白结合管，其中含有600微升无钙和镁的PBS，并补充有10%热灭活FBS。要进行Hoxb5阳性或Hoxb5阴性pHSC分选，请将制备的1.5毫升低蛋白结合管放在分选收集装置上，并使用前面提到的门控策略将Hoxb5阳性或Hoxb5阴性pHSC分选到管中。在第一次排序中，使用排序精度模式的产量。将96孔板与先前制备的支持细胞放在自动细胞沉积单元台上。然后，将1.5毫升低蛋白结合管设置为流式细胞仪的加载口。使用前面提到的门控策略将Hoxb5阳性或Hoxb5阴性pHSC与支持细胞一起分选到96孔板中。对10个Hoxb5阳性或Hoxb5阴性的pHSC进行分类，以测试它们的自我更新能力。供体Hoxb5-tri-mCherry小鼠骨髓分析的流式细胞术图显示，由谱系阴性，c-kit阳性，Sca-1阳性，CD150阳性，CD34阴性或低Flk2阴性定义的pHSC部分中约有20%至25%的细胞是Hoxb5阳性pHSC。这里显示的是受体小鼠外周血分析的代表性流式细胞术图。此外，初次移植后受体小鼠的外周血分析显示，尽管Hoxb5阳性和Hoxb5阴性pHSC在移植后四周表现出相似的供体嵌合，但仅在Hoxb5阳性pHSC受者中观察到连续造血。Hoxb5阴性的HSC在移植后八周开始失去产生造血细胞的能力。在二次移植分析中，只有Hoxb5阳性的pHSC受者表现出强大的造血能力。相比之下，在Hoxb5阴性的pHSC受体小鼠中几乎没有观察到供体细胞，这表明Hoxb5阴性的pHSC在初次移植后16周内失去了自我更新能力。该方案通常需要 9 到 12 小时，因此在整个过程中尽可能将样品保持在 4 摄氏度以保持细胞活力非常重要。

Research

JoVE Journal

Biology

Isolation Method for Long-Term and Short-Term Hematopoietic Stem Cells

Long-term Imaging Mammalian Cells using Wide-Field Microscopy

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长期使用宽视场显微镜的成像哺乳动物细胞

科研

生物学

Isolation and Transplantation of Hematopoietic Stem Cells (HSCs)

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分离和造血干细胞移植（造血干细胞）

Derivation of Hematopoietic Stem Cells from Murine Embryonic Stem Cells

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从小鼠胚胎干细胞的造血干细胞的推导

A stem cell is defined as a cell with the capacity to both self-renew and generate multiple differentiated progeny.  Embryonic stem cells (ESC) are ...

Isolation and Analysis of Hematopoietic Stem Cells from the Placenta

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从胎盘中的造血干细胞的分离和分析

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Lentiviral-mediated Knockdown During Ex Vivo Erythropoiesis of Human Hematopoietic Stem Cells

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Erythropoiesis is a commonly used model system to study cell differentiation. During erythropoiesis, pluripotent adult human hematopoietic stem cells ...

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors

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表型分析和分离小鼠造血干细胞和传承的承诺祖

The bone marrow is the principal site where HSCs and more mature blood cells lineage progenitors reside and differentiate in an adult organism. HSCs ...

Long-term Lethal Toxicity Test with the Crustacean Artemia franciscana

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在文化序列富集的精原干细胞和祖细胞（SSCS）推导长期成年小鼠SSC线

Spermatogonial stem and progenitor cells (SSCs) of the testis represent a classic example of adult mammalian stem cells and preserve fertility for nearly ...

Multilayer Mounting for Long-term Light Sheet Microscopy of Zebrafish

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多层安装于斑马鱼的长期光表镜

Light sheet microscopy is the ideal imaging technique to study zebrafish embryonic development. Due to minimal photo-toxicity and bleaching, it is ...