β-连环蛋白对猪关节软骨细胞合成糖胺多糖的影响

目的 探讨β-连环蛋白对软骨细胞合成糖胺多糖含量的影响.方法 通过Ⅱ型胶原酶消化法获得高活性的软骨细胞,定量接种6×106个细胞于培养皿,在细胞贴壁后更换培养基时,加入β-连环蛋白10μg /L,每周传代一次,连续5周,留取所有培养液,用阿利新蓝法测定软骨细胞糖胺多糖的变化;利用光镜观察原代及传代软骨细胞的生长情况.以50×106/ml浓度均匀接种于经聚乳酸包埋聚羟基乙酸(Polyglycolic acid,PGA)高分子聚合物支架,形成细胞支架复合体,扫描电镜观察细胞生长情况.结果 体外培养的软骨细胞生长情况良好;软骨细胞从传代后合成糖胺多糖类基质,第2代传代细胞分泌GAG的能力最强;加入β-连环蛋白能明显促进传代软骨细胞合成大量的糖胺多糖类基质;扫描电镜显示软骨细胞与材料具有良好的相容性,培养7 d有基质沉积.结论 β-连环蛋白能明显促进体外培养的传代软骨细胞合成大量的糖胺多糖类基质;PLA包埋PGA是软骨细胞良好的支架.     

纳米结构PCL—b—PLLA材料特性及其与犬软骨细胞的生物相容性研究

目的探讨具有纳米结构的聚己内酯／左旋聚乳酸共聚物（PCL—b—PLIJA）作为半月板组织工程支架的可行性，及其与犬软骨细胞的体外生物相容性。方法开环聚合制备PCL-b-PLLA，液-液相分离技术制备纳米结构PCL—b—PLLA支架，固-液相分离技术制备PCL—b—PLLA支架，扫描电镜（SEM）观察材料结构；测定纳米结构支架体外降解率及力学强度。分离培养犬软骨细胞，取第3代软骨细胞接种于纳米结构PCL—b—PLIA（实验组）、PCL—b—PLLA（对照组）支架材料上进行三维培养6d，SEM观察软骨细胞的形态、粘附、生长状况；细胞支架复合培养3、6、12d后，Hoechst33258荧光法检测复合物中细胞DNA含量、BCA法测定蛋白质含量。结果实验组支架材料相对分子量150kD，压缩强度为72．6KPa，孔隙率为93％。SEM示实验组支架表面为多孔状，孔壁为纤维网状连接。其降解率起初始较慢，8周后降解速率明显加快。软骨细胞在实验组支架上粘附、增殖优于对照组。随时间延长细胞在支架材料上DNA和蛋白质含量逐渐增加，实验组DNA和蛋白质含量均明显高于对照组（P〈0．01，P〈0．05）。结论具有纳米结构的PCL-b—PILA支架具有良好的生物力学性能及可降解性，可显著促进细胞粘附、增殖及合成代谢，有望成为一种较为理想的半月板组织工程支架材料。     

第三代超声辅助吸脂获取的h ADSCs构建组织工程软骨的实验研究

目的观察应用第三代超声辅助吸脂技术获取的人脂肪干细胞(hADSCs)与残耳软骨细胞共培养在体内构建组织工程软骨的效果。方法分离培养先天性小耳畸形患者来源的残耳软骨细胞,通过第三代超声辅助吸脂和常规负压吸脂术获取脂肪,并提取hADSCs。实验分为3组:对照组1,PGA/PLA支架接种残耳软骨细胞;对照组2,PGA/PLA支架接种残耳软骨细胞+常规负压抽脂获取的hADSCs;实验组,PGA/PLA支架接种残耳软骨细胞+第三代超声辅助抽脂获取的hADSCs。所有细胞-支架复合物经体外培养4周后植入裸鼠体内,8周后取材。对体外培养4周和体内培养8周的各组标本分别进行大体观察、湿重测量、糖胺多糖含量测定、组织学及免疫组化染色和生物力学检测。结果应用第三代超声辅助吸脂和常规负压吸脂都可获得hADSCs。细胞-支架复合物体外培养4周,对照组1、2与实验组都形成软骨样组织,组织学观察显示软骨特异性ECM沉积,但结构疏松,仍有未降解的PGA支架材料。体内培养8周后取材,对照组1组织学观察显示软骨组织不均一,大部分区域形成成熟软骨组织,但有部分区域组织结构疏松,软骨特异性ECM分泌较少;对照组2和实验组则形成成熟的软骨组织,结构均一,可见大量的软骨陷窝和细胞外基质分泌,支架材料完全降解。湿重、糖胺多糖、生物力学检测结果都显示对照组2和实验组显著优于对照组1,对照组2与实验组无显著差异。结论应用第三代超声辅助吸脂可安全有效地获取hADSCs,与残耳软骨细胞共培养可形成成熟的组织工程软骨。     

经胶原包埋、修饰的聚羟基乙酸与软骨细胞体外培养的实验研究

目的：探讨经胶原包埋、修饰后的聚羟基乙酸（poloyglycolic acid简称PGA）作为组织技术中细胞培养支架的可行性；方法：将用胶原包埋的PGA和没有包埋的PGA分别与软骨细胞共同置于二氧化碳培养箱中培养，观察二者的亲水性，对细胞的吸附能力和细胞分泌基质的能力进行比较；结果：以胶原包埋的PGA和没有包埋的PGA亲水性没有明显的差异，二者亲水性均不强，而前者对细胞的吸附能力和细胞在其上面生长、分泌基质的能力明显增强；结论：以胶原包埋、修饰的PGA作为组织工程技术中细胞生长的支架，具有很大的应用前景。     

胶原凝胶包埋软骨细胞接种CPPf/PLLA支架体外构建组织工程软骨

目的：探讨软骨细胞均匀、高效种植于三维支架的细胞接种方法。方法：将胶原凝胶包埋的软骨细胞整合入CPPf／PLLA三维支架并进行体外培养，细胞计数检测细胞粘附情况，倒置显微镜观察细胞在支架内分布的均一性，组织形态学检测细胞-胶原凝胶-支架复合物形成软骨组织的情况。结果：超过90％的种植细胞能有效、均匀种植于CPPf／PLLA支架，体外培养3周的复合物能形成较成熟的工程化软骨组织。结论：胶原凝胶包埋软骨细胞三维接种能有效提高组织工程软骨的体外构建质量，同时结合了两种材料的优势。     

胶原凝胶复合骨胶原基质(BCM)负载关节软骨细胞的实验研究

目的 探讨胶原凝胶包埋软骨细胞接种BCM支架的三维培养对软骨细胞生长及功能的影响.方法 将胶原凝胶包埋的关节软骨细胞接种BCM支架并在体外培养,应用倒置相差显微镜和扫描电镜观察软骨细胞的粘附、生长和增殖情况,培养14d,行苏木精-伊红、甲苯胺蓝染色观察软骨组织形成情况.结果 软骨细胞在支架上粘附、生长和增殖良好,体外培养14d能形成较成熟的软骨组织.结论 胶原凝胶复合BCM支架具有良好的细胞相容性,可作为负载生长因子的载体.     

胶原凝胶包埋软骨细胞接种CPPf/PLLA支架体外构建组织工程软骨

目的:探讨软骨细胞均匀、高效种植于三维支架的细胞接种方法.方法:将胶原凝胶包埋的软骨细胞整合入CPPf/PLLA三维支架并进行体外培养,细胞计数检测细胞粘附情况,倒置显微镜观察细胞在支架内分布的均一性,组织形态学检测细胞-胶原凝胶-支架复合物形成软骨组织的情况.结果:超过90%的种植细胞能有效、均匀种植于CPPf/PLLA支架,体外培养3周的复合物能形成较成熟的工程化软骨组织.结论:胶原凝胶包埋软骨细胞三维接种能有效提高组织工程软骨的体外构建质量,同时结合了两种材料的优势.     

医用多孔钽材料对大鼠软骨细胞增殖、细胞周期及凋亡的影响

[目的]观察国产多孔钽材料对大鼠软骨细胞增殖、细胞周期及凋亡的影响,为其作为软骨组织工程支架材料临床应用提供实验依据。[方法]选用3周龄SD大鼠双侧股骨头、膝关节分离软骨组织,经Ⅱ型胶原酶消化,饱和湿度培养,传代。倒置显微镜下逐日观察细胞生长状态。待第2代细胞生长至80%左右时,通过甲苯胺蓝染色、番红O-固绿染色以及Ⅱ型胶原免疫细胞化学染色进行软骨细胞鉴定。以F12-DMEM为浸提介质分别制备100%、50%、25%多孔钽浸提液,软骨细胞加不同浓度多孔钽浸提液作为实验组,未加浸提液的软骨细胞作为对照组;MTT法检测多孔钽浸提液对软骨细胞增殖的影响及细胞毒性检测。将第2代软骨细胞接种到多孔钽支架上进行体外三维培养,而对照组是将软骨细胞接种到无支架的培养板上,倒置相差显微镜观察两组软骨细胞生长状态;胰酶消化复合于材料上的软骨细胞,流式细胞仪检测软骨细胞的细胞周期变化及细胞凋亡。[结果]软骨细胞接种初期大小不等,呈圆形悬浮于培养液中,24 h后贴壁细胞伸展呈三角形、多角形等。第7⁹ d待细胞生长呈现融合时即可传代。甲苯胺蓝染色显示软骨细胞胞浆内可见蓝紫色颗粒,番红O-固绿染色显示胞浆呈绿色、细胞核呈紫红色,Ⅱ型胶原免疫细胞化学染色显示阳性信号位于胞浆及部分胞膜,以上方法证实了分离培养的细胞为软骨细胞;MTT法检测显示随着培养时间的延长,各浓度浸提液组细胞生长与对照组无明显差异,软骨细胞形态正常,贴壁增殖良好,相同时间点不同浓度的浸提液与对照组间细胞增殖差异无统计学意义(P>0.05),提示软骨细胞在多孔钽浸提液中生长、增殖状态良好且多孔钽材料无毒性。多孔钽支架材料外观灰色光亮,表面及断面可见分布均匀的蜂窝状孔隙,孔径针尖大,支架材料不透光,将分离培养的第2代软骨细胞接种到多孔钽支架上后,复合培养24 h后,倒置相差显微镜可见材料边缘有少量软骨细胞黏附,细胞呈多角形;随着培养时间增加,材料边缘及培养板底部细胞黏附的数量逐渐增多,边缘软骨细胞生长良好;流式细胞仪检测显示实验组与对照组细胞均为正常二倍体细胞,两组细胞周期分布相似,实验组及对照组的细胞凋亡率及坏死细胞率差异均无统计学意义(P>0.05)。[结论]国产多孔钽材料无毒性,对软骨细胞增殖、细胞周期及凋亡无明显影响,适合作为软骨组织工程支架材料。     

构建带内支撑组织工程软骨的实验研究

目的探讨以医用多孔高密度聚乙烯(Medpor)为内支撑外裹聚羟基乙酸(PGA)的支架,接种软骨细胞后,于体内构建Medpor软骨复合体的可能性。方法实验组:以直径3mm的Medpor外裹2mmPGA为支架,接种新生猪关节软骨细胞(5×107/ml),经体外培养2周及裸鼠皮下移植6周后取材,行大体、组织学、Ⅱ型胶原免疫组织化学和生物化学检测;PGA对照组:以直径8mm的单一PGA为支架,细胞接种与培养同实验组;单纯支架组:利用实验组支架,不接种细胞行体内移植。结果实验组:形成大体形态良好的Medpor-软骨复合体,内部的Medpor与外层软骨结合紧密,组织学可见成熟软骨陷窝并渗入Medpor孔隙内部、异染基质、Ⅱ型胶原表达阳性;PGA对照组:形成的软骨存在"空心"现象;单纯支架组:无软骨形成。结论利用Medpor与PGA复合的支架,接种软骨细胞后,可于体内构建出特定形状、结构与组织学良好的Medpor软骨复合体,克服了组织工程软骨的"空心"现象。     

聚羟基乙酸作为支架材料体外构建复层膀胱壁结构的探讨

目的：探讨聚羟基乙酸（polyglycolic acid,PGA）作为支架材料并复合成年猪膀胱平滑肌细胞和尿路上皮细胞,体外构建复层膀胱壁结构的可行性。方法：采用PGA作为支架材料。并以聚乳酸（polylact acid,PLA）塑形。以酶消化法分别获得猪膀胱尿路上皮细胞和平滑肌细胞,并体外扩增。以MTT法分别检测P3代膀胱平滑肌细胞（SMC）和尿路上皮细胞（UC）的体外增殖能力。将P3代膀胱平滑肌细胞先接种在支架上,再接种尿路上皮细胞。将细胞一材料复合物体外培养1～2周并行组织学鉴定。结果：酶消化法获得的膀胱平滑肌细胞和尿路上皮细胞经过体外培养仍具有较强的体外增殖能力。细胞材料复合物体外培养1周后形成分层排列结构,包括黏膜上皮层和膀胱平滑肌层。免疫组织化学显示平滑肌层α-Smooth Muscle Actin表达阳性,黏膜上皮层广谱角蛋白表达阳性。而细胞材料复合物继续体外培养至2周,细胞从支架上大量脱落。结论：PGA适合作为复层膀胱壁结构体外构建的支架材料。采用PGA作为支架材料并复合膀胱平滑肌细胞和尿路上皮细胞,可以体外构建出类似复层膀胱壁结构。细胞材料复合物体外培养1周左右较适合进行体内回植修复。     

Adhesion of perichondrial cells to a polylactic acid scaffold.

The number of chondrogenic cells available locally is an important factor in the repair process for cartilage defects. Previous studies demonstrated that the number of transplanted rabbit perichondrial cells (PC) remaining in a cartilage defect in vivo, after being carried into the site in a polylactic acid (PLA) scaffold, declined markedly within two days. This study examined the ability of in vitro culture of PC/PLA constructs to enhance subsequent biomechanical stability of the cells and the matrix content in an in vitro screening assay. PC/PLA constructs were analyzed after 1 h, 1 and 2 weeks of culture. The biomechanical adherence of PC to the PLA scaffold was tested by subjecting the PC/PLA constructs to a range of flow velocities (0.25-25 mm/s), spanning the range estimated to occur under conditions of construct insertion in vivo. The adhesion of PC to the PLA carrier was increased significantly by 1 and 2 weeks of incubation, with 25 mm/s flow causing a 57% detachment of cells after 1 h of seeding, but only 7% and 16% after 1 and 2 weeks of culture, respectively (p<0.001). This adherence was associated with marked deposition of glycosaminoglycan and collagen. These findings suggest that pre-incubation of PC-laden PLA scaffolds markedly enhances the stability of the indwelling cells.     

Intra-scaffold continuous medium flow combines chondrocyte seeding and culture systems for tissue engineered trachea construction

In this study we tested the possibility of seeding chondrocytes into poly (ethylene glycol)-terephthalate-poly (butylene terephthalate) PEOT/PBT scaffold through an intra-scaffold medium flow and the impact of this continuous medium flow on subsequent chondrocyte-scaffold culture. Eight cubic PEOT/PBT co-polymers (1 cm(3)) were assigned into two groups. In the semi-dynamic seeding group a continuous medium flow was created inside the scaffolds by a pump system. Around six million chondrocytes were harvested each day, suspended in 1 ml medium and delivered onto the scaffold through the perfusion for a sequential five days. Traditional chondrocytes directly seeding and static culture method was performed as control. Scanning electron microscopy (SEM) and histology assessments were performed to evaluate the distribution of chondrocytes inside the scaffolds and MTT test was chosen to check cell vitality. SEM pictures and histology slices from the perfusion group showed a better three-dimensional cell growth and extensive cell distribution inside the scaffolds; while in the control group chondrocytes only dispersedly formed a monolayer on the surface of scaffolds. Accordingly, MTT results from the perfusion group were much higher than those from control group (0.123 vs. 0.067, P<0.01). Continuous medium perfusion inside PEOT/PBT scaffold effectively combines chondrocyte seeding and culture systems for the reconstruction of tissue engineered trachea.     

碱性成纤维细胞生长因子调节兔关节软骨细胞与包埋后聚乳酸体外培养的实验研究

目的 通过碱性成纤维细胞生长因子（bFGF）调节卵磷脂和多聚赖氨酸共同包埋的聚乳酸三维支架与兔关节软骨细胞的体外培养,观察bFGF对组织工程软骨细胞生长的调节作用,探寻软骨组织工程的适宜方法。方法将体外培养的第3代兔关节软骨细胞种植于卵磷脂和多聚赖氨酸包埋的聚乳酸三维支架,加入bFGF共同培养,行大体、倒置显微镜、扫描电镜及免疫组织化学观察,分析软骨组织的形成,并行统计学分析。结果通过bFGF调节的卵磷脂和多聚赖氨酸共同包埋的聚乳酸三维支架一关节软骨细胞复合物在培养过程中不仅能够保持其初始外形,而且能保持种植细胞稳定的三维均相分布,无细胞脱落现象。同时脆性亦逐渐降低,韧性增加,有弹性,表面湿润、光滑,培养2周后,逐渐形成富含Ⅱ型胶原,具有典型软骨组织结构的成熟工程化软骨。其细胞生长及胶原分泌量明显强于对照组,统计学分析有显著性差异。结论bFGF能够促进组织工程软骨细胞的增殖,并具有增强软骨细胞功能的作用。     

Three-dimensional seeding of chondrocytes encapsulated in collagen gel into PLLA scaffolds

Tissue engineering approaches have been clinically tried to repair damaged articular cartilages. It is an essential step to uniformly seed chondrocytes into 3D scaffolds in order to reconstruct tissue-engineered cartilages in vitro, but the tissue engineering could not have been provided with efficient cell seeding methods. Type I collagen is clinically used and known as a cytocompatible material, having recognition sites for integrins. Collagen gel encapsulating chondrocytes has been tried for making regenerated cartilages, but it is found difficult to have the gel keep its original shape after long-term culture, because of shrinking. On the other hand, 3D scaffolds, either of a nonwoven structure or a sponge-like structure, involve difficulty in that chondrocytes could not be uniformly seeded, although they have adequate initial mechanical properties. In this study, by combining collagen gelation with a nonwoven PLLA scaffold, we achieved uniform cell seeding into the 3D scaffold. Bovine articular chondrocytes were mixed with type I collagen solution, and the solution was poured into the nonwoven PLLA scaffold (1.5 mm thick, diameter 15 mm). The collagen-chondrocyte mixture was made into gel at 37 degrees C for 1 h. The 0.39% collagen mixture was viscous enough to prevent cells from precipitating during gelation. Almost all chondrocytes were able to be incorporated into the PLLA scaffolds by mixing with collagen solution and subsequently making into gel, while 30-40% of the chondrocytes seeded as a cell suspension were not trapped into the PLLA scaffolds. The method presented, where chondrocytes were mixed with collagen solution, and the mixture was incorporated into a 3D scaffold, then made into gel in the scaffold, could serve as an alternative for in vitro cartilage regeneration, also simultaneously having the advantages of both materials.     

Effect of seeding duration on the strength of chondrocyte adhesion to articular cartilage.

Chondrocyte adhesion to cartilage may play an important role in the repair of articular defects by maintaining cells in positions where their biosynthetic products can contribute to the repair process. The objective of this in vitro study was to determine the effect of the duration of seeding time on the ability of chondrocytes to resist detachment from cartilage when subjected to mechanical perturbation (fluid-induced shear stress). Suspensions of adult bovine articular chondrocytes were prepared from primary, high-density monolayer cultures and infused into a parallel-plate shear-flow chamber where they settled onto 50-microm-thick sections of bovine articular cartilage at a density of approximately 20,000 cells/cm2. The chondrocytes were seeded and allowed to attach to the cartilage surface for specific durations (5-40 minutes) in medium including 10% serum at 22 degrees C, after which the cells were exposed to fluid flow-induced shear stresses (6-90 Pa). The fraction of detached cells at each shear stress was calculated from microscopic images. Shear stress was applied for 1 minute because this length of time was sufficient to induce steady-state cell detachment. Increasing the duration of cell seeding led to a more firm attachment of chondrocytes to cartilage. After 9 minutes of seeding, 50% cell detachment was induced by gravitational force alone. After 40 minutes of seeding, 50% detachment required 26 Pa of shear stress. Extrapolation of the data to account for the effect of repeated applications of cell suspensions to an individual cartilage substrate indicated that for a freshly prepared cartilage section, 50% detachment was induced by gravity after 25 minutes of seeding and by 2.3 Pa of shear stress after 40 minutes of seeding. The increase in resistance to shear stress-induced cell detachment with increasing seeding duration suggests that it may be beneficial to allow chondrocytes to stabilize in the absence of applied load for some time after chondrocyte transplantation for cartilage repair in vivo.     

柱状分层的胶原-羟基磷灰石复合支架负载软骨细胞体外培养

目的 观察具有柱状分层结构的胶原-羟基磷灰石（hydroxyapatite，HA）复合支架对软骨细胞的吸附作用及对软骨细胞生物学性状的影响，评价其作为软骨组织工程支架的可行性及价值。方法 以胶原复合HA逐层制备胶原-HA复合支架，体外培养新西兰大白兔关节软骨细胞并扩增，吸附于多孔胶原-HA复合支架材料上进行三维立体培养3周，通过倒置相差显微镜、组织学、扫描电镜及免疫组织化学检测支架对软骨细胞的表型、增殖及功能的影响。结果 胶原-HA复合支架为柱状，支架表层为胶原。平均孔径为147μm，孔隙率89％；中层为多孔胶原-HA复合；底层为HA，平均孔径为85μm，孔隙率85％。胶原-HA复合支架亲水性好，软骨细胞吸附于支架表面24h后，增殖并逐渐顺孔隙迁徙至支架内部，在孔壁贴附良好，表型维持稳定，分泌细胞外基质，Ⅱ型胶原免疫组织化学染色阳性。结论 具有柱状分层结构的胶原-HA复合支架其细胞相容性良好，较胶原纤维具有更强的力学性能，有望成为一种比较理想的软骨组织工程支架材料。     

Improving endothelial cell retention for single stage seeding of prosthetic grafts: use of polymer sequences of arginine-glycine-aspartate.

OBJECTIVE: single stage seeding within the timeframe of a typical vascular operation has not been successful. One reason for this is poor cell adherence to the graft lumen once exposed to pulsatile blood flow. In this study we have carried out investigations with the use of two different fibronectin-based peptides, fibronectin-like engineered protein polymer (FEPP) which contains multiple copies of arginine-glycine-aspartate (RGD) and fibronectin adhesion promoting peptide (FAPP) to improve cell adherence. MATERIALS AND METHODS: FAPP and FEPP were coated onto native polyurethane and heparinised polyurethane grafts. The grafts were then seeded for either 1 or 2h with human umbilical vein endothelial cells (HUVEC). After the incubation period the cells were washed off and cell retention was calculated. Cell metabolism was measured using Alamar Blue, and confirmed with scanning electron microscopy (SEM). RESULTS: heparinised grafts coated with FEPP showed the best cell retention after both 1 and 2h seeding (80+/-4% vs 81+/-3%). This graft had no significant difference in cell retention after both times whilst all the other grafts had better cell retention after a 2h seeding. The Alamar blue and SEM results confirmed cell viability and function for all graft types. CONCLUSION: heparinised graft coated with FEPP allows significant cell retention after only 1h of seeding and shows promise for single stage seeding.     

组织工程软骨体外构建的相关实验研究

目的 探索组织工程软骨体外构建技术体系可行性.方法 种子细胞选用胎儿软骨细胞(口服药物流产胎儿,胎龄3～6个月).酶消化法获得第1代细胞,以50×106/ml浓度均匀接种于经聚乳酸(PLA)包埋聚乙醇酸(PGA)高分子聚合物支架,形成细胞-支架复合体,在体外静态培养.分别于2周、4周、8周进行大体观察、扫描电镜及组织学检测.结果 体外构建的组织工程软骨,随培养时间延长,色泽由2周时的乳白色逐渐呈现半透明,8周时接近正常软骨外观.扫描电镜显示软骨细胞与材料具有良好相容性,培养7天PGA纤维之间有基质沉积.HE染色示2周有大量软骨陷窝形成和均匀嗜碱性基质分泌,Safranin'O染色示基质有酸性蛋白多糖分布,Massons's trichome染色示基质有胶原成分,但含量较少,经免疫组织化学检测为特异Ⅱ型胶原.培养4周胶原成分开始明显增多,软骨陷窝形态接近成熟,8周细胞外基质蛋白多糖和Ⅱ型胶原含量丰富且分布均匀.结论 以成熟软骨细胞为种子细胞,运用组织工程技术在体外能构建出具有正常软骨组织结构特征的人组织工程软骨.     

细胞在胶原复合薇乔网片的吸附研究

目的骨髓细胞、软骨细胞、韧带细胞和滑膜细胞在胶原合成的薇乔网片上培养,研究四种细胞的吸附率。方法细胞在含血清和无血清培养液中,不同的细胞浓度,培养30min和6h,收集未吸附的细胞,统计吸附在合成后的薇乔网片上的细胞吸附率。结果骨髓细胞、软骨细胞、韧带细胞和滑膜细胞在血清和无血清培养液中都可以吸附在胶原复合的薇乔网片上。结论胶原合成的薇乔网片用于组织工程时,应该根据不同的细胞采用不同的培养条件。