ASTM F2739-16
生物材料支架内细胞活力和相关属性的量化的标准指南
Standard Guide for Quantifying Cell Viability within Biomaterial Scaffolds
ASTM F2739-16 发布历史
ASTM F2739-16由美国材料与试验协会 US-ASTM 发布于 2016。
ASTM F2739-16在国际标准分类中归属于: 07.100.99 有关微生物学的其他标准。
ASTM F2739-16 发布之时，引用了标准
- ASTM F2149 自动细胞分析-枚举和获得单细胞悬液的电子感应区方法的标准试验方法
- ASTM F2315 海藻酸钠凝胶中活细胞或组织的固定或封装的标准指南
- ASTM F2998 采用荧光显微法量化固定细胞扩散面积的指南
- ASTM F748 材料和装置用一般生物试验方法的选择
ASTM F2739-16的历代版本如下：
- 2019年 ASTM F2739-19 生物材料支架内细胞活力和相关属性的量化的标准指南
- 2016年 ASTM F2739-16 生物材料支架内细胞活力和相关属性的量化的标准指南
- 2008年 ASTM F2739-08 测定生物材料支架内细胞活性的标准指南
5.1 The number and distribution of viable and non-viable cells within, or on the surface of, a biomaterial scaffold is one of several important characteristics that may determine in vivo product performance of cell/biomaterial constructs (see 5.7); therefore there is a need for standardized test methods to quantify cell viability.
5.2 There are a variety of static and dynamic methods to seed cells on scaffolds, each with different cell seeding efficiencies. In general, static methods such as direct pipetting of cells onto scaffold surfaces have been shown to have lower cell seeding efficiencies than dynamic methods that push cells into the scaffold interior. Dynamic methods include: injection of cells into the scaffold, cell seeding on biomaterials contained in spinner flasks or perfusion chambers, or seeding that is enhanced by the application of centrifugal forces. The methods described in this guide can assist in establishing cell seeding efficiencies as a function of seeding method and for standardizing viable cell numbers within a given methodology.
5.3 As described in Guide F2315, thick scaffolds or scaffolds highly loaded with cells lead to diffusion limitations during culture or implantation that can result in cell death in the center of the construct, leaving only an outer rim of viable cells. Spatial variations of viable cells such as this may be quantified using the tests within this guide. The effectiveness of the culturing method or bioreactor conditions on the viability of the cells throughout the scaffold can also be evaluated with the methods described in this guide.
5.4 These test methods can be used to quantify cells on hard or soft 3-D biomaterials, such as ceramics and polymer gels. The test methods also apply to cells seeded on porous coatings.
5.5 Test methods described in this guide may also be used to distinguish between proliferating and non-proliferating viable cells. Proliferating cells proceed through the DNA synthesis (S) phase and the mitosis (M) phase to produce two daughter cells. Non-proliferating viable cells are in some phase of the cell cycle, but are not necessarily proceeding through the cell cycle culminating in proliferation.
5.6 Viable cells may be under stress or undergoing apoptosis. Assays for evaluating cell stress or apoptosis are not addressed in this guide.
5.7 While cell viability is an important characteristic of a TEMP, the biological performance of a TEMP is dependant on additional parameters. Additional tests to evaluate and confirm the cell identity, protein expression, genetic profile, lineage progression, extent of differentiation, activation status, and morphology are recommended.
5.8 Fundamental biocompatibility testing of the scaffold material itself as described in Practice F748 should be completed prior to using the biomaterial with cells.
5.9 Methods tha......
- 标准号
- ASTM F2739-16
- 发布
- 2016年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM F2739-19
- 当前最新
- ASTM F2739-19
- 引用标准
- ASTM F2149 ASTM F2315 ASTM F2998 ASTM F748