ImmunoCult™ XF培养基

cGMP，无血清和无异种成分培养基，用于人T细胞扩增

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产品号 #100-0956_C

cGMP，无血清和无异种成分培养基，用于人T细胞扩增

产品优势

使用cGMP级的培养基稳定扩增T细胞，用于临床应用
在无血清和无异种培养条件下扩增细胞，减少实验间差异
实现高活力的稳定T细胞扩增
收获经再刺激后能够产生细胞因子的T细胞
与ImmunoCult™人T细胞激活剂搭配使用，实现无磁珠激活T细胞

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总览

支持人T细胞培养，并通过使用高性能的cGMP ImmunoCult™-XF培养基助力您的细胞治疗生产。该培养基专为临床应用而设计，无需血清或血清替代物，不含酚红，不含异种成分，未添加细胞因子——为您的工作流程提供更高的灵活性。培养10 - 12天后可收获T细胞，扩增后的T细胞能够产生包括干扰素γ (IFN-γ)和白细胞介素4等的细胞因子。该即用型培养基根据现行GMP规范生产，确保高质量即高度致性。

ImmunoCult™-XF可单独使用，或与ImmunoCult™Human CD3/CD28 T Cell Activator或ImmunoCult™Human CD3/CD28/CD2 T Cell Activator联合使用，实现T细胞的温和、无磁珠珠活化。使用ImmunoCult™扩增T细胞的更多相关信息，请浏览产品信息表（P[S）。

Data Figures

Culture Protocol for T Cell Activation And Expansion with ImmunoCult™-XF

Figure 1. Culture Protocol for T Cell Activation And Expansion

(A) T cells were isolated from fresh leukopaks (Catalog #70500) from healthy donors using EasySep™ Human T Cell Isolation Kit (Catalog #17951) and cryopreserved in CryoStor® CS10 (Catalog #07930). On Day 0, T cells were thawed, washed, and resuspended at 1 x 10⁶ cells/mL in ImmunoCult™-XF (Catalog #100-0956) supplemented with 180 IU/mL Human Recombinant IL-2, ACF (rhIL-2; Catalog #78145). Cells were seeded into 24-well tissue culture plates (1 mL/well) and stimulated with 25 µL/mL ImmunoCult™ Human CD3/CD28/CD2 T Cell Activator (Catalog #100-0785)*. On Days 3, 5, 7, and 10, cells were re-seeded in fresh ImmunoCult™-XF + rhIL-2 at low or high cell densities as outlined in the table (B). Cells were harvested on Day 12.

*A similar protocol was performed using ImmunoCult™ Human CD3/CD28 T Cell Activator (Catalog #100-0784). Please reach out to our Product and Scientific Support team for additional information.

Figure 2. ImmunoCult™ Reagents Result in Robust T Cell Expansion Under Low Cell Density Culture Conditions

T cells were cultured with ImmunoCult™-XF (Catalog #100-0956), Human Recombinant IL-2, ACF (Catalog #78145), and ImmunoCult™ Human CD3/CD28/CD2 T Cell Activator (Catalog #100-0785) for 12 days following the low cell density protocol described in Figure 1. Cells were harvested and analyzed at different time points. Cell count and viability were assessed using the NucleoCounter® NC-250™ automated cell analyzer, and cell surface marker expression was analyzed by flow cytometry.

(A) Points and bars in the graph represent T cell viability and average cumulative fold expansion, respectively, for each assessed culture time point. An average viability of 92.8 ± 1.8% and a total fold expansion of 1497 ± 143 were achieved by Day 12 in the low cell density cultures. Data represent mean ± SEM (n = 11).

(B) The ratio of CD4+ T cells to CD8+ T cells (CD4:CD8) was comparable between Day 0 and Day 12 in 10 out of 11 donors.

(C) The frequency of T cells expressing PD-1, TIM-3, and LAG-3 was upregulated upon stimulation and subsequently decreased to basal levels (n = 4).

(D) The frequency and number of T cell subtypes in CD4+ and CD8+ populations during the 12-day culture period are shown. Cell numbers were calculated based on 10⁶ starting T cells. The number of central memory T cells remained constant from day 7 to 12. T cell subsets: naive and T memory stem cell (T_N/SCM) CCR7+CD45RO-; central memory (T_CM) CCR7+CD45RO+; effector memory (T_EM) CCR7-CD45RO+; effector cells (T_EFF) CCR7-CD45RO- (n = 4 - 11).

Figure 3. ImmunoCult™ Reagents Support T Cell Activation and Expansion Following High Cell Density Protocol

T cells were cultured with ImmunoCult™-XF (Catalog #100-0956), Human Recombinant IL-2, ACF (Catalog #78145), and ImmunoCult™ Human CD3/CD28/CD2 T Cell Activator (Catalog #100-0785) for 12 days following the high cell density protocol described in Figure 1. Cells were harvested at different time points and analyzed. Cell count and viability were assessed using the NucleoCounter® NC-250™ automated cell analyzer, and cell surface marker expression was analyzed by flow cytometry.

(A) Points and bars in the graph represent T cell viability and average cumulative fold expansion, respectively, for each assessed culture time point. An average viability of 89.3 ± 2.3% and a total fold expansion of 67 ± 7 were achieved by Day 12 in the high cell density cultures (mean ± SEM, n = 4).

(B) The ratio of CD4+ T cells to CD8+ T cells (CD4:CD8) was measured at the beginning and end of culture. The CD4:CD8 ratios increased in two out of four donors tested.

(C) The frequency of T cells expressing PD-1, TIM-3, and LAG-3 increased upon stimulation and subsequently decreased to basal levels by Day 12 of culture (n = 4), with the exception of LAG-3 expression in the CD8⁺ population.

(D) Data shows the frequency and number of T cell subtypes in CD4+ and CD8+ populations at the indicated time points. Cell numbers were calculated based on 10⁶ starting T cells. The number of central memory T cells continued to increase from Day 7 to Day 12 of culture. T cell subsets: naive and T memory stem cells (T_N/SCM) CCR7+CD45RO-; central memory (T_CM) CCR7+CD45RO+; effector memory (T_EM) CCR7-CD45RO+; effector cells (T_EFF) CCR7-CD45RO- (n = 4).

Culture Protocol for Expansion of T Cells with ImmunoCult™ Reagents in the Xuri™ Cell Expansion System W25

Figure 4. Culture Protocol for Expansion of T Cells with ImmunoCult™ Reagents in the Xuri™ Cell Expansion System W2

T cell expansion workflow in Xuri™ Cell Expansion System W25: T cells were isolated from fresh leukopaks (Catalog #70500) using the EasySep™ Human T Cell Isolation Kit (Catalog #17951) and cryopreserved in Cryostor® CS10 (Catalog #07930). On Day 0, cryopreserved cells were thawed and resuspended at 1 x 10⁶ cells/mL in ImmunoCult™-XF (Catalog #100-0956) supplemented with 180 IU/mL Human Recombinant IL-2, ACF (Catalog #78145). 5 x 10⁷ T cells were seeded in a T175 tissue culture flask and activated with ImmunoCult™ Human CD3/CD28/CD2 T Cell Activator (Catalog #100-0785) at 25 μL/mL. On Day 3, cell density was adjusted to 1 - 2.5 x 10⁵ cells/mL by adding fresh ImmunoCult™-XF with IL-2. On Day 5, the cell suspension containing 3 x 10⁸ cells/L of culture volume was inoculated into a Xuri™ 2L Cellbag™ Bioreactor and cultured until Day 10. Once the cell density reached 1.5 x 10⁶ cells/mL, perfusion was initiated at 0.5 L/day on Day 7 and increased to 1 L/day on Day 9. The culture was harvested on Day 10.

Figure 5. Expansion of T Cells with ImmunoCult™ Reagents in the Xuri™ Cell Expansion System W25

(A) Points and bars in the graph represent T cell viability and average cumulative fold expansion, respectively, for each assessed culture time point. On average, 92.7 ± 0.7% viability and a total fold expansion of 503 ± 51 were achieved by Day 10 (mean ± SEM, n=4).

(B) Changes in the ratio of CD4+ T cells to CD8+ T cells (CD4:CD8) were measured at the beginning and end of culture. Some variability among donors was observed (n = 4).

(C) The frequency of T cells expressing PD-1, TIM-3, and LAG-3 increased by Day 3 and subsequently decreased from Day 3 to Day 10 (n = 4).

(D) The frequency and number of T cell subtypes in CD4+ and CD8+ populations are shown. Cell numbers were calculated based on 10⁶ starting T cells. The number of central memory T cells peaked on Day 7 of the culture. T cell subsets: naive and T memory stem cells (T_N/SCM) CCR7+CD45RO-; central memory (T_CM) CCR7+CD45RO+; effector memory (T_EM) CCR7-CD45RO+; effector cells (T_EFF) CCR7-CD45RO- (n = 4).

(E) The frequencies of expanded T cells expressing IFN-ɣ and TNF-ɑ upon stimulation with PMA and ionomycin were 66.6 ± 2.1% and 96.3 ± 1.1%, respectively, in the CD4+ population, and 73.2 ± 11.4% and 93.8 ± 1.3%, in the CD8⁺ population. Additionally, the frequencies of expanded CD8+ T cells expressing perforin and granzyme B without stimulation were 23.3 ± 9.1% and 37.7 ± 6.8%, respectively (n = 4).

Figure 6. High-Efficiency TRAC Knockout of T Cells

(A) The protocol for non-viral genetic modification and expansion of T cells: On Day 0, T cells were isolated from fresh leukopaks using the EasySep™ Human T Cell Isolation Kit (Catalog #17951). Cells were resuspended at 1 x 10⁶ cells/mL in ImmunoCult™-XF (Catalog #100-0956) supplemented with 180 IU/mL Human Recombinant IL-2, ACF (rhIL-2; Catalog #78145). Cells were seeded into 24-well tissue culture plates at 1 mL/well and stimulated with ImmunoCult™ Human CD3/CD28/CD2 T Cell Activator (Catalog #100-0785) at 25 μL/mL. Following 3 days of activation, RNP complexes containing ArciTect™ Cas9 Nuclease (Catalog #76004) and sgRNA targeting the TRAC gene were delivered to T cells by electroporation (Neon® Transfection System). Cells were then returned to culture in ImmunoCult™-XF supplemented with rhIL-2 for another 9 days of expansion following the low cell density protocol.

(B) Representative flow cytometry plots of TCRαβ and CD3 expression analysis on Days 2 and 9 post-T cell editing.

(C) The gene editing efficiency was assessed by measuring the frequency of the remaining TCRαβ+CD3+ cells in the mock (91.8 ± 1.1%) and edited T cells (16.1 ± 2.6%) 2 days post-editing. The frequency of TRAC-edited cells was maintained throughout the culture duration.

(D) The viability of T cells was measured using the NucleoCounter® NC-250™ automated cell analyzer across culture periods. On Day 3, the viability of T cells further decreased immediately following transfection.

(E) Cumulative cell expansion post-electroporation was comparable between mock-treated and TRAC-edited T cells, suggesting that the edited T cells are functional. Data represent mean ± SEM (n = 3).

Protocols and Documentation

Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.

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