hIGF-1促进软骨细胞在脱细胞软骨基质材料中的增殖及黏附

目的探究脱细胞软骨基质(ACM)作为天然细胞支架的可行性及人胰岛素样生长因子1(hIGF-1)对软骨细胞在ACM上的增殖及黏附作用的影响。方法兔耳软骨细胞原代培养,取第3代细胞备用。将脱细胞处理获得的ACM进行HE染色、Masson染色及电镜下观察,用CCK-8法检测支架浸提液的毒性。将软骨细胞接种至ACM中,实验组加入57.14μg/L的hIGF-1,培养7 d后于电镜下观察细胞在ACM上的增殖及黏附。结果 1)ACM疏松多孔,电镜下孔径(3.48±1.39)μm,孔隙率(90.13±2.52)%。2)实验组软骨细胞增殖旺盛,细胞占据绝大部分支架空穴。而对照组软骨细胞增殖较缓慢,且仅有少量细胞进入材料空穴内。结论实验制备的ACM是一种可靠的天然细胞支架。且hIGF-1能促进软骨细胞在ACM上的增殖及黏附。     

新型纳米纤维支架的细胞生物相容性

背景：高孔隙率聚己内酯纳米纤维支架具有适合血管平滑肌细胞黏附、增殖的多级孔径结构,具有良好的细胞生物相容性。 目的：探讨高孔隙率聚己内酯静电纺丝纳米纤维支架的细胞相容性。 方法：根据支架的制作工艺不同分为传统支架组、新型纳米纤维支架组两组,另设单纯细胞组为对照组。采用组织块贴壁法体外原代培养兔主动脉平滑肌细胞并进行传代,用3~6代细胞作为实验用种子细胞。应用WST-1法测定平滑肌细胞黏附率、增殖力,光镜及扫描电镜观察细胞形态,评估支架的细胞生物相容性。 结果与结论：高孔隙率聚己内酯纳米纤维支架对细胞形态无明显影响,新型支架上的种子细胞黏附、增殖及代谢活性情况较传统支架好。提示,高孔隙率聚己内酯静电纺丝纳米纤维支架具有较高的细胞相容性。     

胶原-壳聚糖支架与软骨细胞的生长

背景：目前软骨支架材料的种类比较多,但还没有一种材料能完全符合软骨修复的要求。 目的：观察在混合材料胶原-壳聚糖支架中软骨细胞的生长情况。 方法：采用冷冻干燥法将质量分数为2%胶原与3%壳聚糖混合制备胶原-壳聚糖多孔支架。将分离培养的第2代兔软骨细胞接种到胶原-壳聚糖支架上,对照组将软骨细胞接种到无支架的培养板中。观察支架的孔隙率、吸水性及内部形态结构,MTT法检测软骨细胞在支架上的增殖情况,组织切片苏木精-伊红染色,扫描电镜观察细胞在支架的生长、贴附情况,RT-PCR检测细胞支架复合物蛋白聚糖和Ⅱ型胶原mRNA表达情况。 结果与结论：胶原-壳聚糖支架的吸水性为(80.0±0.55)%,孔隙率为(88.5±1.5)%,孔径为100~150 μm,复合细胞培养2周后,细胞增殖活力高,软骨细胞分泌的蛋白聚糖和Ⅱ型胶原mRNA表达明显高于对照组。说明质量分数为2%胶原与3%壳聚糖的混合支架适合软骨细胞生长和快速增殖,是一种良好的修复和重建软骨载体。     

聚乳酸/聚乙二醇-聚乳酸新型亲水支架的制备与研究

利用热致相分离/粒子沥滤结合法,制备了聚乳酸(PDLLA)以及聚乳酸与聚乙二醇-聚乳酸共聚物(PELA)复合的PDLLA/PELA组织工程支架。讨论了聚乙二醇(PEG)分子量、PELA含量及组成比对于支架内部结构、力学性能、降解行为和细胞毒性的影响。结果表明,热致相分离/粒子沥滤结合法制备的支架,具有100~250μm大孔与5~40μm小孔兼备的特殊内部结构,PEG含量愈高、PEG分子量愈小,支架的孔隙率愈大。PDLLA/PELA比率的减小,PEG/PLA比率的增大会引起支架力学性能的下降和降解的加速。材料无细胞毒性。当支架中PDLLA/PELA为3∶1,PEG 5000/PLA为25∶75时,其内部孔形态最为理想。     

改性聚乳酸-羟基乙酸/Ⅰ型胶原复合支架与兔耳软骨细胞的细胞相容性

背景:聚乳酸-羟基乙酸是一种应用前景较好的细胞支架材料,其亲水性和细胞亲和性较差,因此对其改性很有必要。目的:观察改性聚乳酸-羟基乙酸/I型胶原复合支架的亲水性及与兔耳软骨细胞的细胞相容性。方法:利用多聚赖氨酸对聚乳酸-羟基乙酸改性后与I型胶原构成改性复合支架,倒置显微镜下观察支架的大体结构。将改性复合支架(实验组)与聚乳酸-羟基乙酸支架(对照组)分别浸泡在双蒸水中,间隔0.5,1,2,4,8,12,24h后计算吸水率。用酶消化法培养兔耳软骨细胞并传代,取第2代软骨细胞,浓度为1×1011L-1接种在两种支架上并培养,倒置显微镜下观察细胞的形态和生长情况,采用细胞计数法计算细胞接种24h后支架对细胞的吸附率;以及采用细胞增殖法(MTT比色试验)分别于1,2,4,6d测细胞吸光度值。结果与结论:改性复合支架具有高孔隙率,表面粗糙度较对照组增加。两种支架吸水率在相同时间点比较差异有显著性意义(P0.01),说明改性复合支架具有较好的亲水性。第2代软骨细胞接种后24h,实验组对细胞的吸附率为0.9080±0.0192,对照组为0.7332±0.0475,两组比较差异有显著性意义(P0.05),说明改性复合支架具有较好的细胞亲和性。软骨细胞在实验组和对照组支架上接种培养后1,2,4,6d吸光度值比较,差异均有显著性意义(P0.05),说明改性复合支架对细胞增殖有显著的促进作用。     

胶原复合梯度磷酸三钙负载软骨细胞的体外培养

目的 观察新型三维支架材料胶原复合梯度磷酸三钙在体外与软骨细胞的相容性和黏附性,评价其作为软骨组织工程支架的可行性.方法 取8周龄新两兰大白兔膝关节软骨,以酶消化法获得高纯度软骨细胞,培养3代后与三维支架材料胶原复合梯度磷酸三钙在体外复合培养.用倒置相差显微镜、HE染色、免疫组织化学及扫描电镜观察软骨细胞形态、Ⅱ型胶原表达及成软骨能力,同时观察支架材料与软骨细胞的相容性.结果 扫描电镜观察显示支架材料具有疏松多孔结构,孔隙结构规则,孔径100～150 μm,材料内部孔与孔之间贯通良好.支架亲水性好.软骨细胞吸附于支架表面,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,可分泌细胞外基质.结论 胶原复合梯度磷酸三钙三维支架具有良好的细胞相容性.     

羟基丁酸-羟基辛酸聚合物/胶原软骨组织工程支架的细胞亲和性

背景：已有很多实验证明,单独高分子材料或生物性材料制备的组织工程支架无法满足组织工程研究。 目的：评价羟基丁酸-羟基辛酸聚合物/胶原组织工程支架的生物学特性及细胞亲和性。 方法：以羟基丁酸-羟基辛酸聚合物作为主体材料,按质量分数复合不同比例(2%,4%,6%,8%,10%)的胶原,采用溶剂浇铸-颗粒沥滤法制备组织工程支架。通过扫描电镜观察材料内部结构及孔径大小,液体位移法测定材料孔隙率。将羟基丁酸-羟基辛酸聚合物/胶原支架、羟基丁酸-羟基辛酸聚合物支架分别与兔软骨细胞复合培养,MTT法测定细胞的生长曲线,扫描电镜观察细胞在材料上的生长黏附情况。 结果与结论：羟基丁酸-羟基辛酸聚合物/胶原复合软骨组织工程支架孔径大小200 μm左右,孔隙率为(85±2)%,细胞亲水性随加入胶原比例的增加而升高。与羟基丁酸-羟基辛酸聚合物支架比较,不同比例的羟基丁酸-羟基辛酸聚合物/胶原支架可明显促进软骨细胞的黏附、增殖。证实羟基丁酸-羟基辛酸聚合物/胶原复合支架具备更好的细胞亲和性。中国组织工程研究杂志出版内容重点：生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程全文链接：     

马来酸酐改性聚乳酸对成骨细胞黏附、增殖和分化的研究

通过研究马来酸酐改性聚乳酸(MPLA)和聚乳酸(PDLLA)材料表面对MC3T3-E1成骨细胞形态、黏附、增殖、细胞总蛋白含量、碱性磷酸酶活性及细胞分泌无机钙含量的影响,评价MPLA和PDLLA材料的细胞相容性。结果显示:与PDLLA相比,MPLA材料上的成骨细胞完全黏附和充分铺展;MPLA材料上细胞的增殖速率、细胞总蛋白含量、细胞碱性磷酸酶活性及细胞分泌的无机钙含量都显著高于PDLLA(P<0.01)。这些结果说明,MPLA材料能促进MC3T3-E1成骨细胞的黏附、铺展、增殖及蛋白质的合成,并能促进成骨细胞的分化和矿化,与PDLLA材料相比具有更好的细胞相容性。     

制备工艺条件对胶原多孔支架材料结构和性质的影响

目的考察胶原溶胀液浓度、预冻温度等制备工艺条件对胶原多孔支架结构和性质的影响。方法采用冷冻干燥法制备胶原多孔支架,分别以不同浓度(0.2%～0.8%)的胶原溶胀液,经-50℃预冻制备;同时选择0.6%胶原溶胀液,分别经不同预冻温度(-20～-80℃)预冻制备。以甲醛为交联剂对胶原多孔支架进行化学交联。考察不同制备条件下制备的胶原多孔支架孔径结构、力学强度和降解率等性质,同时将兔关节软骨细胞种植在胶原多孔支架上,应用MTT法和扫描电镜观察比较其细胞相容性。结果随着胶原溶胀液浓度增加,多孔支架平均有效孔径逐渐减小,分布更加不均,孔径范围为50～200μm之间,支架的密度和抗拉强度逐渐增加,降解率逐渐减小;随着预冻温度的降低,胶原多孔支架孔径逐渐减小,分布更均一,降解率逐渐减小。细胞培养结果显示,胶原溶胀液浓度的减低和预冻温度的升高,制备的支架有利于软骨细胞黏附和增殖,电镜观察支架上细胞形态呈球形,有大量的丝状伪足相连。结论在不同的胶原溶胀液浓度和预冻温度的制备条件下制备的胶原多孔支架具有不同孔径结构,进而影响到胶原多孔支架的力学性能,降解性能和细胞相容性等。在本实验所选择孔隙尺寸范围内,孔径越大越有利于软骨细胞的黏附和增殖,胶原溶胀液浓度为0.3%～0.6%和预冻温度为-30～-50℃胶原多孔支架适合软骨细胞的黏附和增殖。     

脱细胞半月板细胞外基质/脱钙骨基质双相半月板支架的制备及其生物相容性的研究

目的成功制备脱细胞半月板细胞外基质/脱钙骨基质双相半月板支架,并与半月板纤维软骨细胞结合研究其生物相容性。方法联合利用湿法粉碎、差速离心等物理方法和胃蛋白酶等化学方法制备脱细胞半月板细胞外基质,利用改良Urist法制备脱钙骨基质,并利用灌注、冷冻干燥等方法分别制备脱细胞半月板细胞外基质支架、脱钙骨基质支架以及脱细胞半月板细胞外基质/脱钙骨基质双相支架等三种不同的支架,并从组织学、分子生物学、生物力学等方面研究三种支架的异同;原代培养兔半月板纤维软骨细胞,并将P3代的纤维软骨细胞分别种植在以上三种支架上,利用扫描电镜、死/活细胞染色等观察细胞生长情况,并分别在3、7、14 d时检测纤维软骨细胞的增殖情况以及分泌胶原和糖胺多糖的含量。结果物理化学联合法脱细胞可以去除半月板中绝大部分的细胞成分,并且很好地保留正常半月板细胞外基质的胶原以及糖胺多糖成分;脱细胞半月板基质支架、脱钙骨基质支架以及脱细胞半月板细胞外基质/脱钙骨基质双相支架三种支架均具有良好的孔隙率,合适的孔径大小,扫描电镜结果显示纤维软骨细胞可以很好地在支架上生长,死/活细胞染色结果显示三种支架均可以维持良好的细胞活性,但是脱细胞半月板细胞外基质/脱钙骨基质双相支架具有更好的生物力学特性,脱细胞半月板基质支架和脱钙骨基质/脱细胞半月板基质双相支架在促进纤维软骨细胞增殖和维持细胞表型方面要比单纯脱钙骨基质支架更优。结论脱细胞半月板细胞外基质/脱钙骨基质双相支架具有较好的生物力学特性,良好的生物相容性,可以促进纤维软骨细胞增殖,同时也可以维持纤维软骨细胞的表型,是一种可以应用于组织工程半月板再生的支架。     

Proliferation of chondrocytes on porous poly(DL-lactide)/chitosan scaffolds

Porous poly(DL-lactide)(PDLLA)/chitosan scaffolds with well-controlled pore structures and desirable mechanical characteristics were fabricated via a combination of solvent extraction, phase separation and freeze-drying. These scaffolds were further evaluated for the proliferation of isolated rabbit chondrocytes in vitro for various incubation periods up to 4 weeks in order to finally use them for the cartilage tissue engineering. MTT assay data revealed that the number of cells grown on PDLLA/chitosan scaffolds measurably increased with the weight ratio of the chitosan component and was significantly higher than those collected from pure PDLLA scaffolds for the entire incubation period. Scanning electron microscopy examinations, histological observations and proteoglycan measurements indicated that the resulting PDLLA/chitosan scaffolds exhibited increasing ability to promote the attachment and proliferation of chondrocytes, and also helped seeded chondrocytes spread through the scaffolds and distribute homogeneously inside compared to pure PDLLA scaffolds. Immunohistochemical staining verified that these PDLLA/chitosan scaffolds could preserve the phenotype of chondrocyte and effectively support the production of type II collagen.     

皮肤组织工程-细胞支架的构筑及其生物相容性评价

皮肤组织工程的发展提供了一种无损伤修复创伤和功能重建的皮肤治疗模式.作为组织工程的三要素之一,细胞支架发挥着重要的作用.为满足组织工程中对细胞支架在力学性能、物理结构及生物相容性等方面的要求,我们首先制备了聚乳酸(PDLLA)、聚乳酸-己内酯(PLACL)多孔支架,并以生物相容性较好的猪的无细胞真皮(acellular dermis matrix,ADM)为参比,分别把三种材料植入大鼠背部肌层,术后定期取大鼠皮下埋藏组织进行组织学检测.结果发现PDLLA与PLACL多孔支架的降解周期、力学性能、孔隙率及其孔径都可以根据皮肤组织工程中的要求进行调控.组织学检查,移植物内无明显炎性细胞,21天后,均完全血管化且分布较均匀.说明PDLLA与PLACL的生物相容性较ADM差,但并未出现明显的异物排斥反应,两者的生物相容性基本上可以满足组织工程中对支架的要求,这为聚乳酸类人工皮肤的进一步研究提供了有意义的实验依据.     

"Wet-state" mechanical properties of three-dimensional polyester porous scaffolds

Porous poly(D,L-lactic-co-glycolic acid) (PLGA) scaffolds under a simulated physiological environment were investigated to estimate their "true" mechanical properties, with emphasis on the effect of "wet-state" on the compressive behaviors. The effect of the history of ethanol sterilization was also investigated. The studies were focused upon the "wet-state" mechanical properties of polyester porous scaffolds, because the potential implants must be used under a wet environment. The measurements of three-dimensional porous scaffolds composed of amorphous PLGA with five polymer formulations including poly(D,L-lactic acid) (PDLLA) demonstrated that the mechanical properties of PLGA scaffolds significantly decreased in phosphate buffer saline solution (PBS) at 37 degrees C and/or with an ethanol sterilization history, even though PLGA is a hydrophobic material. The decrease extent depends on the copolymer composition: when the porosity is about 90%, a PDLLA scaffold remained about 75-80% of initial mechanical properties in the dry state at 25 degrees C, whereas PLGA 85:15, 75:25, and 65:35 scaffolds remained only about 10% or less, and the PLGA 50:50 scaffolds examined were not sufficiently strong for mechanical tests. If scaffolds were prewetted with ethanol ahead of prewetting with PBS, the mechanical properties further decreased compared with those merely prewetted with PBS. These phenomena were elucidated experimentally from plasticization of PLGA with water or ethanol, and the consequent reduction of glass transition temperature. The results might be helpful for designing polyester porous scaffolds for tissue engineering or in situ tissue induction applications.     

Improvement of mechanical and biological properties of porous CaSiO3 scaffolds by poly(D,L-lactic acid) modification

Porous calcium silicates (CaSiO3, WT) are regarded as a potential bioactive material for bone tissue engineering. However, their insufficient mechanical strength and high dissolution (degradation) limit their biological applications. The aim of this study is to surface modify WT scaffolds with poly(d,l-lactic acid) (PDLLA) to improve their mechanical and biological properties. The phase composition, microstructure, porosity and interconnectivity of WT and PDLLA-modified WT (WTPL) scaffolds were analyzed by X-ray diffraction, scanning electron microscopy and micro-computerized tomography. The WTPL scaffolds maintained a more uniform and continuous inner network, compared to that of the WT scaffolds, while maintaining the pore size, porosity and interconnectivity of the original materials. The compressive strength, compressive modulus and percentage strain of the WT and WTPL scaffolds were assessed in air and phosphate-buffered saline. PDLLA modification significantly improved the compressive strength and decreased the brittleness of the WT scaffolds. The weight loss and apatite-forming ability of the two scaffolds were evaluated by soaking them in simulated body fluid (SBF) for 1, 3, 7, 14 and 28days. PDLLA modification decreased the dissolution of the WT scaffolds while maintaining their apatite-forming ability in SBF. In addition, PDLLA modification improved the spreading and viability of human bone-derived cells. Our results indicate that PDLLA-modified CaSiO3 scaffolds possess improved mechanical and biological properties, suggesting their potential application for bone tissue regeneration.     

聚乳酸/壳聚糖纳米纤维/纳米羟基磷灰石支架与兔软骨细胞的相容性

背景：传统的支架材料存在疏水性强,材料表面缺乏细胞表面受体特异结合的生物活性分子,材料的酸性降解产物易引发无菌性炎性反应等不足。根据仿生原理及软骨真实结构和构成来选择和制备组织工程软骨支架能够获得理想效果。 目的：制备聚乳酸/壳聚糖纳米纤维/纳米羟基磷灰石支架,评价其与兔膝关节软骨细胞的生物相容性,探讨其应用于关节软骨组织工程的可行性。 方法：采用二次相分离技术制备聚乳酸/壳聚糖纳米纤维/纳米羟基磷灰石复合支架,将第3代新西兰兔软骨细胞接种至复合支架材料上复合培养,倒置相差显微镜下观察细胞生长情况。细胞-支架复合物在24孔板中培养5 d以后,将其植入裸鼠皮下8周。 结果与结论：聚乳酸/壳聚糖纳米纤维/纳米羟基磷灰石支架材料经化学合成后,具有合适的三维多孔结构,孔隙率为90%,孔径300~450 μm;植入裸鼠皮下8周后Ⅱ型胶原免疫组织化学染色和甲苯胺蓝染色显示细胞-支架复合物中的软骨细胞可以像天然软骨一样分泌黏多糖和Ⅱ型胶原。提示生物材料聚乳酸/壳聚糖纳米纤维/纳米羟基磷灰石对于兔软骨细胞有良好的生物相容性,可作为生物组织工程支架。     

聚DL-乳酸/磷酸盐复合多孔支架材料的制备及降解性能

采用溶液浇铸 -颗粒滤除法制备了聚 DL-乳酸 (PDL L A) ,聚 DL-乳酸 /羟基磷灰石 (PDL L A/ 2 0 wt%HA)、及聚 DL-乳酸 / β-磷酸三钙 (PDL L A/ 2 0 wt% β- TCP)复合多孔支架材料。研究了支架材料在体外降解中压缩强度、分子量、质量及水解液的 p H值变化规律。结果显示 :复合多孔支架中 HA和 β- TCP均匀分布在 PDL L A基质中 ,复合支架的孔隙率可达 84 % ,磷酸盐微粒的加入对多孔支架的孔隙率有一定的影响 ,但可提高多孔支架的压缩强度 ,并可中和 PDL L A降解所产生的酸性 ,延缓 PDL L A的降解速度。两者相比 ,HA的作用更为明显     

Comparative phenotypic analysis of articular chondrocytes cultured within type I or type II collagen scaffolds

Among the existing repair strategies for cartilage injury, tissue engineering approach using biomaterials and chondrocytes offers hope for treatments. In this context, collagen-based biomaterials are good candidates as scaffolds for chondrocytes in cell transplantation procedures. These scaffolds are provided under different forms (gel or crosslinked sponge) made with either type I collagen or type I or type II atelocollagen molecules. The present study was undertaken to investigate how bovine articular chondrocytes sense and respond to differences in the structure and organization of these collagen scaffolds, over a 12-day culture period. When chondrocytes were seeded in the collagen scaffolds maintained in free-floating conditions, cells contracted gels to 40-60% and sponges to 15% of their original diameter. Real-time polymerase chain reaction analysis indicated that the chondrocyte phenotype, assessed notably by the ratio of COL2A1/COL1A2 mRNA and alpha10/alpha11 integrin subunit mRNA, was comparatively better sustained in type I collagen sponges when seeded at high cell density, also in type I atelocollagen gels. Besides, proteoglycan accumulation in the different scaffolds, as assessed by measuring the sulfated glycosaminoglycan content, was found be highest in type I collagen sponges seeded at high cell density. In addition, gene expression of matrix metalloproteinase-13 increased dramatically (up to 90-fold) in chondrocytes cultured in the different gels, whereas it remained stable in the sponges. Our data taken together reveal that type I collagen sponges seeded at high cell density represent a suitable material for tissue engineering of cartilage.     

基于3D打印羟基磷灰石支架的填充结构与力学性能研究

3D打印骨组织工程支架是近来的研究热点,而制备同时具有高孔隙率和足够力学性能的骨组织工程支架是研究的难点之一。在孔隙率相同条件下,探究不同填充角度结构对3D打印支架力学性能影响。首先用SolidWorks软件设计孔隙率相同的3种不同填充角度(45°、60°、90°)支架结构,以交点处结构作为支架的最小支撑单元,并用ABAQUS软件对其进行力学性能仿真,对仿真所得单元结构压缩模量进行累加,探究填充角度对支架力学性能的影响;进而通过3D打印制备3种填充结构的羟基磷灰石支架,测试支架的孔隙率和力学性能,对仿真结果进行验证。结果表明,仿真所得3种填充结构的压缩模量比为E_s(90°)∶E_s(60°)∶E_s(45°)=12.3∶10.9∶10.0。打印得到3种不同填充角度(90°,60°,45°)的羟基磷灰石支架孔隙率无显著性差异,其压缩模量比为E_s(90°)∶E_s(60°)∶E_s(45°)=15.4∶13.1∶10.0,与仿真结果趋势一致,90°填充的支架具有最高的抗压强度((7.36±0.63) MPa)和压缩模量((33.55 ± 2.49) MPa),与力学性能最低的45°填充支架相比,抗压强提高74.8%,压缩模量提高55.18%。在孔隙率相同的条件下,单个孔型面积越小,其压缩模量和抗压强度越高。该研究为制备最优填充结构的3D打印生物支架提供分析方法和理论依据。     

Fabrication of poly-DL-lactide/polyethylene glycol scaffolds using the gas foaming technique

The aim of this study was to prepare poly-DL-lactide/polyethylene glycol (PDLLA/PEG) blends to improve medium absorption and cell proliferation in the three-dimensional (3-D) structure of their scaffolds. Carbon dioxide (CO2) was used as a foaming agent to create porosity in these blends. The results of Fourier transform infrared (FTIR) spectroscopy demonstrated that the blends were homogeneous mixtures of PDLLA and PEG. The peak shifts at 1092 and 1744 cm(-1) confirmed the presence of molecular interactions between these two compounds. Increasing the PEG weight ratio enhanced the relative crystallinity and hydrophilicity. The PDLLA/PEG blends (especially 80/20 and 70/30 weight ratios) exhibited linear degradation profiles over an incubation time of 8 weeks. The mechanical properties of PDLLA/PEG blends having less than 30 wt.% PEG were suitable for the fabrication of porous scaffolds. Increasing the concentration of PEG to above 50% resulted in blends that were brittle and had low mechanical integrity. Highly porous scaffolds with controllable pore size were produced for 30 wt.% PEG samples using the gas foaming technique at temperatures between 25 and 55 °C and pressures between 60 and 160 bar. The average pore diameters achieved by gas foaming process were between 15 and 150 μm, and had an average porosity of 84%. The medium uptake and degradation rate of fabricated PDLLA/PEG scaffolds were increased compared with neat PDLLA film due to the presence of PEG and porosity. The porous scaffolds also demonstrated a lower modulus of elasticity and a higher elongation at break compared to the non-porous film. The fabricated PDLLA/PEG scaffolds have high potential for various tissue-engineering applications.