Cultured meat from muscle stem cells: A review of challenges and prospects

Growing muscle tissue in culture from animal stem cells to produce meat theoretically eliminates the need to sacrifice animals. So-called "cultured" or "synthetic" or "in vitro" meat could in theory be constructed with different characteristics and be produced faster and more efficiently than traditional meat. The technique to generate cultured muscle tissues from stem cells was described long ago, but has not yet been developed for the commercial production of cultured meat products. The technology is at an early stage and prerequisites of implementation include a reasonably high level of consumer acceptance, and the development of commercially-viable means of large scale production. Recent advancements in tissue culture techniques suggest that production may be economically feasible, provided it has physical properties in terms of colour, flavour, aroma, texture and palatability that are comparable to conventional meat. Although considerable progress has been made during recent years, important issues remain to be resolved, including the characterization of social and ethical constraints, the fine-tuning of culture conditions, and the development of culture media that are cost-effective and free of animal products. Consumer acceptance and confidence in in vitro produced cultured meat might be a significant impediment that hinders the marketing process.     

猪肌肉干细胞在三维水凝胶中的分化研究

【目的】 探究猪肌肉干细胞在三维水凝胶中的分化效果,为体外诱导肌肉干细胞分化成为肌肉组织提供方法指导。【方法】 将一定数目的猪肌肉干细胞分别在二维和三维条件下诱导分化（二维条件指在培养皿中培养细胞,三维条件指在水凝胶中培养细胞）,分别收取增殖阶段、预分化阶段、分化初期、分化成熟、分化末期的二维培养细胞的RNA和蛋白样品,以及分化7和14 d的三维培养细胞的RNA和蛋白样品。利用RT-qPCR技术检测细胞在两种条件下分化至不同阶段时成肌相关基因MYOG、CAV-3、MyHC-slow、MyHC-2a的表达水平;利用Western Blot技术检测细胞在两种条件下分化至不同阶段时MYOG、MyHC蛋白的表达水平;利用免疫荧光染色技术观察猪肌肉干细胞在二维和三维条件下融合形成的肌管;使用氨基酸自动分析仪检测分化14 d培养肌肉组织的氨基酸含量及组成。【结果】 二维培养的猪肌肉干细胞在分化第3天时开始发生肌融合,在分化第7天形成成熟肌管,随后进入分化末期,肌管开始脱落。三维培养的猪肌肉干细胞在分化第7天时还未完全伸展,细胞的MYOG和CAV-3表达水平低;分化第14天时水凝胶内已形成多核肌管,MYOG和CAV-3表达达到二维分化水平。三维分化有利于终末分化基因MyHC-slow和MyHC-2a的表达,分化14 d时MyHC-slow的表达量是二维分化7 d的12倍,MyHC-2a的表达量是二维分化7 d的4倍,但是MyHC蛋白的表达量仅为二维分化7 d时的1/6。氨基酸分析结果表明体外培养肌肉组织中17种水解氨基酸含量均低于猪肉,且必需氨基酸在总氨基酸的占比也低于猪肉,但是呈味氨基酸的占比相较猪肉更高。【结论】 猪肌肉干细胞可以在三维胶原水凝胶中分化形成肌管,且三维条件有利于成肌分化相关基因表达,但要实现MyHC蛋白的高表达还需进一步研究,按此方法体外培养的肌肉组织有较高的呈味氨基酸含量,可能会有较好的风味。     

铁线莲组培快繁技术研究

[目的]研究不同激素浓度对铁线莲诱导、增殖和生根的影响,建立铁线莲组培快繁技术。[方法]以铁线莲茎段为外植体,在MS培养基中加入不同浓度的6-BA、NAA和IBA,研究不同激素浓度对其腋芽诱导分化、诱导芽增殖和继代苗生根的影响。[结果]铁线莲腋芽诱导效果以MS+6-BA 1.0 mg/L+NAA 0.2 mg/L为最佳;增殖培养以MS+6-BA 1.5 mg/L+NAA 0.50 mg/L为最佳;继代苗生根培养以MS+6-BA 1.5 mg/L+IBA 2.0 mg/L最佳。[结论]建立了铁线莲组培快繁技术体系,为其规模化生产提供理论依据。     

大鼠骨骼肌卫星细胞培养的研究

[目的]探讨在体外条件下骨骼肌卫星细胞纯化、培养、鉴定的方法及确定其生物学特性。[方法]取新生大鼠的小腿肌肉,采用肌组织块和肌细胞培养两种方法。分别用胰蛋白酶对培养中的肌组织块和肌细胞进行消化,采用离心及差速贴壁法纯化,得到更高纯度的大鼠骨骼肌肌卫星细胞,进行体外原代骨骼肌和传代骨骼肌的细胞培养。传至第2代后,用分化培养基诱导分化,观察骨骼肌细胞各个阶段的形态特征并拍照。[结果]此方法分离的细胞成活率较高,体外生长、增殖良好。在分化培养基条件下,细胞分化良好,可融合成肌管。[结论]该实验成功探讨了新生大鼠骨骼肌卫星细胞的分化能力并建立了卫星细胞纯化方法,适用于开展细胞移植和肌组织工程方面的研究。     

杉木优良无性系组培技术体系的建立

[目的]建立杉木(Cunninghamia lanceolata)优良无性系组培快繁技术体系,为杉木规模化育苗提供技术支持.[方法]以桂林市全州县15年生优良杉木单株基部或根部萌芽条的茎尖为外植体,筛选最佳HgCl2浸泡灭菌时间;以1/2MS为基本培养基添加不同激素组合进行芽的诱导和增殖,以1/4MS为基本培养基添加不同生长素或生长素组合进行生根培养,筛选适宜杉木组织培养和快繁的培养基.[结果]在改良培养基1/2MS+0.8 mg/L 6-苄氨基嘌呤(6-BA)+0.3 mg/L吲哚丁酸(IBA)中,杉木茎尖芽的诱导率达74.3%,平均芽长达2.3 cm;在改良培养基1/2MS+0.6 mg/L 6-BA+0.3 mg/L IBA中,杉木茎尖诱导芽的继代培养增殖倍数适中,增殖芽生长较快,有效苗数较多;在改良培养基1/4MS+0.5 mg/L IBA+1.0 mg/L ABT 6号生根粉中,杉木继代苗的生根率达90.7%.[结论]6-BA质量浓度是影响杉木外植体诱导率的主要因素,同时影响新芽的萌发数量;IBA则主要影响新芽的生长速度.适宜质量浓度的生长素可促进杉木组培苗生根,但质量浓度过高会抑制苗木生根.在实际生产中,以1/2MS+0.8 mg/L 6-BA+0.3 mg/L IBA为杉木茎尖芽诱导和生长的培养基、1/2MS+0.6 mg/L 6-BA+0.3 mg/L IBA为杉木茎尖诱导芽的继代增殖培养基、1/4MS+0.5 mg/L IBA+1.0 mg/L ABT 6号生根粉为杉木组培苗的生根培养基,可实现杉木优良无性系规模化育苗.     

草莓种子实生苗的病毒分子检测

草莓易感染病毒,从而导致产量减少和品质下降。目前生产上主要采用茎尖组织培养脱毒的方法,并不能保证完全脱除病毒,还需要进行无病毒检测鉴定。因此,需进一步探索简便、高效、免检的脱毒体系。利用RT-PCR技术,以草莓肌动蛋白基因序列为内标,结合4种草莓病毒特异性扩增,验证了草莓种子实生苗不携带病毒。旨在助推种子繁殖型草莓品种的应用。     

山羊胎儿肌肉干细胞的分离培养与成肌诱导分化

【目的】通过体外建立安淮山羊胎儿肌肉干细胞分离培养及成肌诱导分化的方法,为进一步研究调控山羊肌肉干细胞增殖与分化的分子机制提供实验材料。【方法】本试验选取山羊胎儿背最长肌肌肉组织,用眼科剪剪成肉糜后,用0.1%的Ⅰ型胶原酶消化40 min,然后利用0.25%的胰酶消化15 min。分离得到的细胞用生长培养基（20%FBS+80%DMEM/F12+青链霉素）培养于37℃、5% CO2培养箱内。培养2h后采用差速贴壁技术对细胞进行纯化,又2h后,重复纯化一次。待细胞生长至70%左右密度时可进行传代培养。每次传代培养均采用差速贴壁30min的方法进一步纯化肌肉干细胞,共纯化至第6代。利用免疫荧光技术检测第6代细胞中肌肉干细胞标记基因Pax7、MyoD1的蛋白表达情况,从而对分离得到的细胞进行鉴定。当肌肉干细胞生长至70%左右密度时,将生长培养基更换为分化培养基（2%FBS+98%DMEM/F12+青链霉素）,诱导细胞向成肌方向分化并观察细胞的形态学变化。细胞诱导分化1d后,采用免疫荧光技术检测肌肉干细胞的分化标记基因Myog的蛋白表达情况。另外,分别提取诱导0、1、3、5、7d后的细胞的总RNA,通过反转录试剂盒反转成cDNA后,利用qPCR测定MyoD1和Myog的相对表达量。【结果】 分离得到的细胞呈贴壁生长,其形态趋于稳定后主要呈长梭形或纺锤形。免疫荧光技术检测的第6代细胞中Pax7和MyoD1蛋白均为阳性表达。采用分化培养基诱导细胞分化后,在显微镜下可观察到随着诱导天数的增加,细胞开始分化、相互融合成肌管且具有一定的方向性。免疫荧光检测结果表明Myog蛋白呈明显的阳性表达。另外,qPCR结果显示,标志基因MyoD1和Myog均有表达,且MyoD1的相对表达量在分化的第1天相比于0天显著升高并维持到第3天,第5、7天开始显著下降但仍显著高于增殖期。Myog在分化不同天数的细胞中的相对表达量具有类似的趋向。【结论】分离得到了纯度较高的安淮山羊胎儿肌肉干细胞,且诱导后展现出较好的成肌潜力。研究结果可为进一步开展肌肉干细胞成肌分化的分子机制研究提供材料来源。     

Application of image analysis to plant cell suspension cultures

Cell suspension culture is a promising tool for developing high-efficiency systems for transplant or metabolite production. To make the best use of this technique, it is essential to maintain high quality in cultured cells. Quality evaluations, which select cultured cells or cell lines with desirable properties, are necessary for cell quality maintenance. Image analysis has good potential for realizing simple, non-invasive and objective quality evaluations in cell suspension cultures. Factors used so far to evaluate cultured cells relate to color, growth rate, shape, aggregate size distribution, and macroscopic texture. Both microscopic and macroscopic images are available for analysis. Microscopic image analysis has advantages over directly observing individual cells, cell aggregates or differentiated cell masses. However, it has problems with image acquisition. On the other hand, macroscopic images viewed with normal or macro lenses whose fields of view cover almost one whole culture have an advantage in imaging, as images can be acquired from outside the culture vessel without special devices. They have also been used for quality evaluation of cell suspensions using cell quantification or texture analysis.     

温度及BRL饲细胞对体外小鼠精原干细胞的影响

 将6 日龄小鼠生精上皮单细胞分别接种于BRL和STO饲养层上,于32 ℃或37 ℃培养,研究其对精原干细胞的影响。结果:在培养的第1周内,2个及4个相连的精原细胞合胞体明显增多。培养１周后,多数精原细胞经短暂的存活及分裂活动后退化消失,培养体系中仅保留下少量单个及由细胞间桥相连的双个及4个成串或成团的A型精原细胞。这些细胞在随后的培养过程中,不表现明显的分裂活动,呈碱性磷酸酶阳性反应。根据精原干细胞生物学特性,它们极有可能就是精原干细胞及其子代细胞。不同条件培养体系中的精原干细胞的生物学行为无明显不同,培养60 d时均仅有少量精原干细胞存活。结论: BRL细胞能用作饲养层促进精原干细胞存活,但对其更新性增殖没有明显作用;32～37 ℃对精原干细胞的生物学行为无明显影响,均可用于培养精原干细胞。     

Continuously Cultured Tissue Cells and Viral Vaccines: Potential advantages may be realized and potential hazards obviated by careful planning and monitoring

1) Continuously cultured tissue cells afford numerous potential advantages for the propagation of viruses to be used in vaccines. 2) Because continuously cultured tissue cells sooner or later become capable of growing into neoplasms when transplanted into a suitable host, every possible precaution should be taken to ensure that viral vaccines grown in cell cultures are free from living cells and cell particles larger than 0.5 to 1.0 micron. 3) The radical abnormalities that occur in cell lines derived from neoplasms and those that develop sooner or later in cell lines derived from normal tissue cannot be ignored. However, no evidence has been recorded (i) that untoward consequences follow administration of cell-free preparations from such cultures to humans or (ii) that oncogenic or other viral activity is associated with the ability of cells of these lines to grow into neoplasms when transplanted into a suitable host. It seems very unlikely, nevertheless, that acceptance could be won at present for the general use of a live-virus vaccine prepared from a virus grown in cells showing evidences of malignancy. This conclusion is based more on psychological and public relations considerations than on the available scientific information, which, however, needs considerable augmentation. In this connection, careful consideration should be given to the question whether the absence of the cited kinds of abnormalities from a continuously cultured cell system is a sufficient indicator of freedom from oncogenic potential. In the absence of unfavorable data, we judge that present knowledge does not preclude judicious extension of clinical trials, in volunteers, of appropriately filtered and otherwise controlled experimental live-virus vaccines grown in carefully selected continuously cultured cell systems. Only in this way can sufficient data be collected, and adequate criteria be developed, to define eventually the conditions for acceptability of such preparations for general administration to humans. 4) Every possible effort should be devoted to the development of non-oncogenic and otherwise acceptable cell lines from normal tissues for use in viral vaccine production. It is suggested that exploratory studies begin with continuously cultured mixed-cell populations in the diploid state and stabilized cloned cultures. Criteria for the selection and monitoring of cell lines, and progressive steps leading to large-scale application are outlined. 5) If the need for immunization against a particular viral disease should be deemed sufficiently urgent, and if no practicable alternative were available, serious consideration might be given to a vaccine prepared by inactivating the virus, grown in such a selected stabilized cell line as HeLa or human skin epithelium. The conditions of preparation would have to be such as would inactivate the most resistant known viruses and infective nucleic acids with a generous margin of safety. 6) Principal areas needing intensified research emphasis are indicated.     

兔泪腺上皮细胞的培养与鉴定

用剪切及剪切加胰蛋白酶法消化兔泪腺组织。获取兔泪腺上皮细胞，设计相应的培养基，进行组织块原代培养或混合消化原代培养，用免疫细胞化学染色进行细胞鉴定。结果表明。组织块在体外培养10d，可见上皮样细胞从植块边缘长出，2周后泪腺上皮细胞在培养瓶底部铺成单层，经传代3次，角蛋白染色阳性细胞纯度达90％以上；用混合消化法接种的细胞生长相对较慢。结果提示：用剪切组织块进行培养的方法简便易行，易获得符合要求的兔泪腺上皮细胞。     

半夏组织培养中降低成本的研究

[目的]降低半夏组织培养的生产成本，提高经济效益。[方法]从培养基的组成、培养器皿的选择以及培养条件几方面分别进行了试验研究，同时还研究确定了适宜半夏增殖的温度和光照条件。[结果]试验得出，采用食用白糖代替蔗糖、软化处理的自来水代替蒸馏水以及果酱瓶代替兰花瓶等措施进行半夏的组织培养，在生产中对半夏的生长无显著的影响，组织培养效果相似。[结论]在大规模工厂化生产半夏组培苗时，采用效果相同但价格较低的替代材料可以显著降低生产成本。     

Update of Meat Standards Australia and the cuts based grading scheme for beef and sheepmeat

Changing markets and evolving consumer demand present new challenges for the beef and sheep industries. In response, the industry has been investing in innovations to deliver new products and management systems to consumers. One such innovation is the Meat Standards Australia (MSA) system. This system is a Total Quality Management System, aimed at delivering an eating quality guarantee to consumers, and through this adding value to the entire supply chain. At present, it is well developed for beef and still evolving for sheepmeat. MSA has identified Critical Control Points (CCPs) in the production, pre-slaughter, processing and value-adding aspects of the supply chain that impact on consumer palatability through the large-scale taste testing of meat by untrained consumers. These CCPs are used as either (1) mandatory criteria determining eligibility for grading, and (2) inputs in a model predicting the palatability of individual combinations of muscle and different cooking methods. Through the prediction of palatability, MSA increases consumer satisfaction and is used to provide assurance for branded products and new marketing innovations in Australia and internationally. This has added significant value to the Australian beef industry, with several retail examples demonstrating consumer willingness to pay more for premium quality beef and sheepmeat products based on the MSA grading scores. This price differential at retail allows the value of the carcass to be calculated based on the eating quality as well as the volume produced, thereby delivering a financial reward for farmers producing high quality carcasses. The continuous quality scale of MSA allows producers to realise the financial gain of incremental improvements in quality, as well as the precise economic weights associated with traits such as marbling, ossification score, or breed. The use of MSA in this fashion has underpinned a new and innovative supply chain where the pricing is transparent and allows producers to make informed decisions to modify both quality and yield traits. To date, the MSA system for beef has proved to be effective in predicting beef palatability not only in Australia but also in many other countries (France, Poland, Ireland, Northern Ireland, Japan, South Korea, New-Zealand, the USA and South Africa). In Europe, results of the ProSafeBeef and ProOptiBeef projects as well as other national projects demonstrate the potential to develop an MSA-like international grading system for the supply chain in the EU, despite the diverse cultures and complex beef production systems within the member states. International testing in lamb has only just begun and preliminary results are discussed here.     

小苍兰脱毒苗的试管成球试验初报

小苍兰脱毒苗在试管中形成球茎,可减轻组培苗出试管的工作难度和工作量:并降低了污染和重新感毒的机率;为脱毒苗的批量生产创造更好的条件。小苍兰脱毒苗的试管成球程序是:先取脱毒试管苗以培养基A(MS BA2mg/L NAA0.1mg/L)促使其增生许多分蘖;而后取各分蘖以培养基B(MS BA2mg/L NAA0.1mg/L 蔗糖60g/L)促使其基部形成小球并增大至一定大小;最后取成球苗株以培养基C使其成长与成熟。     

何鲁牵牛的组培快繁研究

[目的]建立何鲁牵牛的组培快繁体系,为其规模化生产提供理论依据。[方法]以何鲁牵牛茎段为外植体,研究何鲁牵牛不定芽增殖和生根的最适培养基。[结果]何鲁牵牛在WPM+0.3 mg/L 6-BA+0.01 mg/L NAA+0.1 g/L活性炭的启动培养基上成功诱导腋芽抽出,将腋芽转接到WPM+0.3 mg/L 6-BA+0.1 g/L活性炭培养基上进行不定芽的增殖,增殖率达4.30;在WPM+0.1 mg/L IBA+0.1 mg/L NAA+0.1 g/L活性炭培养基上生根率较高,可达90%。[结论]该研究建立了何鲁牵牛的组培快繁体系,有利于何鲁牵牛种质资源保护和工厂化生产。     

Research on Rapid Propagation of Gongshui Pomelo by Tissue Culture

[Objective] This study aimed to investigate the optimal medium and hor-mone combinations for efficient rapid propagation of Gongshui pomelo and analyze key technical measures in the tissue culture process. [Method] Stem tips and stem segments with buds were col ected from four varieties of pomelo adult trees as explants, to investigate the main effect and key regulatory factors of vegetative organs and tissue culture explants and to propose a series of measures to prevent and control microbial contamination. Final y, an efficient rapid propagation technology system of Gongshui pomelo was established. [Result] Spring shoot explants contained large amounts of auxin, cytokinins, gibberel ins and other growth regulators, which could be used for tissue culture with high bud generation rate and rapid growth. Different conditions led to various culture results. Specifical y, mature pomelo seeds should be generated on semisolid 1/2MS medium and transferred to solid MS medium for incubation. The propagation coefficient of stem segments with axillary buds was greater than that of stem tips, exhibiting significant differences. In ad-dition, the optimal hormone combination was 6-BA 0.5 mg/L ＋ NAA 0.5 mg/L, which significantly promoted the induction and differentiation of adventitious buds. [Conclusion] This study provided basis for basic research, production and application of pomelo germplasm resources.     

组培满天星最佳生根途径试验报告

为了克服组培快繁满天星移栽成活率低，培养周期长，成本高，条件要求严格等，进行了组培满天星最佳生根方式试验。结果表明：茎尖组织培养的新茎，用生根粉处理后进行扦插水培，其生根率达９０％以上，较试管培养高１６％，较基质扦插高５０％；育苗周期较试管培养和基质扦插缩短约２０ｄ；移栽成活率较试管培养和基质扦插分别提高３５％、８４％。结论：用生根粉处理后进行扦插水培是满天星最佳生根方式。     

草莓组培工厂化育苗大规模生产技术

试验研究了草莓组培工厂化育苗大规模生产技术,苗木生产主要采用热处理脱毒、试管增殖、田间扩繁相结合的方法,采用瓶外生根,简化了组培程序,缩短了育苗周期,降低了生产成本。苗木移栽成活率达100%,每年可生产优质无毒草莓苗20×104株。     

水稻规模化转基因技术体系构建与应用

水稻作为重要的粮食作物和遗传转化的模式植物,其遗传转化一直受到广泛重视。自世界首例转基因水稻于1988年获得成功以来,水稻遗传转化技术体系迅猛发展,尤其是1994年首次通过农杆菌介导实现对粳稻的高频转化,经过近20年的发展,水稻遗传转化技术体系已经比较完善。目前,应用于水稻中的转基因技术主要包括基因枪介导法和农杆菌介导法,一些实验室也采用花粉管通道法、电击法、PEG转化法等。其中,农杆菌介导的转基因方法以其低成本、易操作、转化效率高、单位点插入比例高、后代表达稳定等特点已经成为水稻转化的主流方法,约占水稻转基因报道总数的80%以上。虽然国内外刊物时有转基因方法改进的报道,但是由于种种原因,水稻的转化还受一些因素的限制,例如部分粳稻品种和籼稻受基因型的限制十分明显,转基因效率普遍较低,严重制约了转基因技术在水稻生产中的应用;某些转基因程序过于繁琐,耗时长,成本高,不但导致效率低,而且长时间的组织培养诱发逆转座子转座引起无性系变异干扰了功能研究和育种工作。因此,迫切需要建立高效、安全、规模化和标准化的水稻转基因技术体系。文章综述了国内外水稻转化技术的发展历程,重点回顾了近5年中国水稻规模化转基因技术研究进展,包括围绕不同水稻基因型高效转化体系优化及建立,对影响农杆菌转化效率及植株分化频率等诸多因素如水稻基因型、外植体类型、农杆菌菌株和质粒载体、培养基组分、共培养时间、侵染方式等方面的研究和探索。整合国内外已有研究结果进行技术集成创新,分别以粳稻和籼稻成熟胚、幼胚为外植体,采用农杆菌转化方法,通过优化受体材料和愈伤状态、农杆菌侵染浓度和分化温湿度、工艺流程标准化等多种组分,突破了成熟胚分化难的技术瓶颈,整合了无选择标记等安全转基因技术,实现了粳稻和部分籼稻转化技术的标准化和工厂化,初步建立了安全、高效、规模化水稻转基因技术体系。但与国际先进水平相比,尤其与一些跨国生物技术公司相比,在转化规模和转化效率方面仍然存在较大差距。认为安全、高效、规模化是转基因水稻新品种培育和产业化的重大技术瓶颈。建立水稻主栽品种快速、高效、稳定的转化系统,开发安全型转化技术,开展多基因、大片段基因转化,实现转基因的定点整合和时空控制表达等是水稻转基因技术的发展趋势,针对水稻规模化转基因技术体系存在的问题,提出了相应的对策,对于促进转基因水稻新品种培育和功能基因组学研究具有一定参考价值。     

北京油鸡骨骼肌卫星细胞的分离、培养、鉴定及成肌诱导分化的研究

【目的】探讨体外培养条件下北京油鸡骨骼肌卫星细胞分离、培养及鉴定的方法,建立适于北京油鸡骨骼肌卫星细胞体外扩增的培养体系,为今后进一步研究北京油鸡骨骼肌卫星细胞提供技术平台。【方法】以15日龄的鸡胚胸肌为材料,采用联合酶消化法分离骨骼肌卫星细胞,差速贴壁法纯化细胞,使用Pax7、Desmin、Myod等骨骼肌卫星细胞的特异性标志对所得细胞进行免疫荧光鉴定,随后进行成肌诱导分化,并比较了3种培养体系对骨骼肌卫星细胞增殖的影响。【结果】细胞免疫荧光鉴定结果呈阳性,证实所培养的细胞为北京油鸡骨骼肌卫星细胞;成肌诱导后,细胞相互融合形成多核的肌管,成肌特异性标志MHC表达呈阳性;对不同扩增培养体系比较,结果表明,培养体系DMEM/F12+15%FBS+2.5ng·mL-1bFG最有利于北京油鸡骨骼肌卫星细胞的增殖。【结论】该试验成功地分离并鉴定了北京油鸡骨骼肌卫星细胞,建立了适于北京油鸡骨骼肌卫星细胞体外扩增的培养体系,同时成功地进行了成肌诱导分化,为今后研究北京油鸡骨骼肌生长和发育的机理提供了技术平台。