StemSpan™ SFEM II

Serum-free medium for culture and expansion of hematopoietic cells

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Serum-free medium for culture and expansion of hematopoietic cells
From: 133 USD

Overview Related Products Scientific Resources Product Applications Data and Publications

Overview

StemSpan™ Serum-Free Expansion Medium II (SFEM II) is a modified version of StemSpan™ SFEM. It has been developed for the in vitro culture and expansion of human hematopoietic cells, when the appropriate growth factors and supplements are added. This allows users the flexibility to prepare the medium to meet their requirements. Using appropriate StemSpan™ Expansion Supplements, SFEM II may be used to expand CD34+ cells isolated from human cord blood, mobilized peripheral blood, or bone marrow samples, or to expand and differentiate lineage-committed progenitor cells to generate populations of erythroid, myeloid (granulocytes or monocytes), or megakaryocyte progenitor cells.
Contains:
• Iscove’s MDM
• Bovine serum albumin
• Recombinant human insulin
• Human transferrin (iron-saturated)
• 2-Mercaptoethanol
• Supplements
Subtype:
Specialized Media
Cell Type:
Hematopoietic Stem and Progenitor Cells
Species:
Human
Application:
Cell Culture; Expansion
Brand:
StemSpan
Area of Interest:
Stem Cell Biology; Transplantation Research
Formulation:
Serum-Free

Scientific Resources

Product Documentation

Document Type
Product Name
Catalog #
Lot #
Language
Product Information Sheet
StemSpan™ SFEM II
09605, 09655
All
EN
Safety Data Sheet
StemSpan™ SFEM II
09605, 09655
All
English

Educational Materials

(16)
Brochure
StemSpan™: Defined Media and Supplements for Hematopoietic Cell Expansion
Brochure
Hematopoietic Stem and Progenitor Cells - Products for Your Research
Technical Bulletin
Culturing Leukemic Stem & Progenitor Cells with StemSpan™ Medium
Technical Bulletin
StemSpan™ Media and Supplements for the Expansion and Differentiation of Erythroid Progenitor Cells
Technical Bulletin
StemSpan™ Medium and Supplements for the Generation of T Cells from Cord Blood-Derived CD34+ Cells
Webinar
46:01
Targeting Self-Renewal Function in Normal Hematopoietic and Leukemic Stem Cells
Webinar
1:06:52
New Tools for the Ex Vivo Expansion of Human Hematopoietic Stem and Progenitor Cells
Webinar
45:17
Troubleshooting In Vitro Expansion of Leukemic Cells
Webinar
54:39
Qualification of Ancillary/Raw Materials for Clinical Use
Webinar
17:18
The Impact of Ancillary Materials on Your Translational Research
Webinar
55:51
CRISPR-Cas9 Editing of Hematopoietic Stem and Progenitor Cells
Webinar
50:50
Humanized Mouse Models for Hematopoietic Stem Cell Research: Principles and Pitfalls
Mini Review
Hematopoietic Stem and Progenitor Cells (HSPCs): Isolation, Culture, and Assays
Scientific Poster
Defined and Xeno-Free Medium for Reprogramming Blood-Derived CD34+ Cells or Erythroid Cells
Scientific Poster
STEMdiff™ Hematopoietic Kit Reproducibly Generates Functional Hematopoietic Progenitor Cells from Human Pluripotent Stem Cells
Scientific Poster
Hematopoietic Expansion and Differentiation Into Megakaryocytes and Erythroid Cells With StemSpan™ SFEM II
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Product Applications

This product is designed for use in the following research area(s) as part of the highlighted workflow stage(s). Explore these workflows to learn more about the other products we offer to support each research area.

Research Area Workflow Stages for
Workflow Stages
Hematopoietic Stem and Progenitor Cell Research
Cell Sourcing and Isolation
Expansion and Differentiation
Analysis
Myeloid Cell Research
Cell Sourcing
Cell Isolation
Cell Characterization

Data and Publications

Data

Expansion of CD34 + Human Cord Blood Cells Cultured in StemSpan™ Media Containing CC100 Cytokine Cocktail

Figure 1. Expansion of CD34 + Human Cord Blood Cells Cultured in StemSpan™ Media Containing CC100 Cytokine Cocktail

Purified CD34 + human cord blood (CB) cells were suspended at a concentration of 10,000 per mL in StemSpan™ SFEM (dark gray bars), SFEM II (gold bars) and ACF (orange bars) media containing CC100 Cytokine Cocktail (Catalog #02690). Cultures were maintained for 7 days, after which the cells were counted and examined for CD34 and CD45 expression by flow cytometry. Shown are the fold expansion of total nucleated cells (TNC) (A) and CD34 + cells (B) per input CD34 + cell, and the percent CD34 + cells (C). Results represent the average results of 32 different CB samples. Vertical lines indicate 95% confidence limits, the range within which 95% of results fall. The numbers of cells produced in StemSpan™ SFEM II were significantly higher than in StemSpan™ SFEM and StemSpan™-ACF (*p<0.001, paired t-test, n=32).

StemSpan™ SFEM II Serum-Free Expansion Medium Containing CC100 Cytokine Cocktail Supports Greater Expansion of Human CD34 + Cells Than Other Media Tested

Figure 2. StemSpan™ SFEM II Serum-Free Expansion Medium Containing CC100 Cytokine Cocktail Supports Greater Expansion of Human CD34 + Cells Than Other Media Tested

Expansion of CD34 + cells, normalized relative to the values obtained in StemSpan™ SFEM medium (dark gray bars) after culturing purified CD34 + CB (A, n=6) or bone marrow (BM) (B, n=3) cells for 7 days in StemSpan™ SFEM, SFEM II (gold bars) and ACF (orange bars), and six media from other commercial suppliers (light gray bars, Competitor 1-6, which included, in random order, StemPro34 (Life Technologies), X-Vivo-15 and HPGM (both from Lonza), SCGM (Cellgenix), StemLine II (Sigma) and HP01 (Macopharma)). All media were supplemented with StemSpan™ CC100 Cytokine Cocktail (Catalog #02690). Vertical lines indicate 95% confidence limits, the range within which 95% of results fall. The numbers of CB and BM cells produced in StemSpan™ SFEM II were significantly higher than in all other media, except the numbers of CB cells produced in StemSpan™-ACF (*p<0.05, paired t-test).

Expansion of CD34 + Human Cord Blood Cells Cultured in StemSpan™ Media Containing CD34 + Expansion Supplement

Figure 3. Expansion of CD34 + Human Cord Blood Cells Cultured in StemSpan™ Media Containing CD34 + Expansion Supplement

Purified CD34 + human cord blood (CB) cells were suspended at a concentration of 10,000 per mL in StemSpan™ SFEM (dark gray bars), SFEM II (gold bars) and ACF (orange bars) media containing CD34 + Expansion Supplement (Catalog #02691). Cultures were maintained for 7 days, after which the cells were counted and examined for CD34 and CD45 expression by flow cytometry. The number of colony-forming units (CFU) in the expanded population was determined by replating cells in MethoCult™ H4435 and counting the number of colonies produced 14 days later. Shown are the fold expansion of total nucleated cells (TNC) (A), CD34 + cells (B) and CFU numbers (C) per input CD34 + cell, and the percent CD34 + cells (D) in these cultures (n=6). Vertical lines indicate 95% confidence limits, the range within which 95% of results fall. The numbers of cells produced in StemSpan™ SFEM II was significantly higher than in SFEM and ACF (*p<0.001, #p<0.05, paired t-test, n=6).

StemSpan™ SFEM II Serum-Free Expansion Medium Containing CD34 + Expansion Supplement Supports Greater Expansion of Human CD34 + Cells Than Other Media Tested

Figure 4. StemSpan™ SFEM II Serum-Free Expansion Medium Containing CD34 + Expansion Supplement Supports Greater Expansion of Human CD34 + Cells Than Other Media Tested

Expansion of CD34 + cells (A) and CFUs (B), normalized relative to the values obtained in SFEM medium (dark gray bars) after culturing purified CD34 + CB cells for 7 days in StemSpan™ SFEM, SFEM II (gold bars) and ACF (orange bars), and six media from other suppliers (light gray bars, Competitor 1-6, which included, in random order, X-Vivo-15 (Lonza), HP01 (Macopharma), StemPro34 (Life Technologies), SCGM (Cellgenix), StemLine II (Sigma), and HPGM (Lonza). All media were supplemented with the StemSpan™ CD34 + Expansion Supplement (Catalog #02691). Vertical lines indicate 95% confidence limits, the range within which 95% of results fall. The numbers of cells produced in StemSpan™ SFEM II were significantly higher than in all other media (*p<0.01, paired t-test, n=6).

StemSpan™ SFEM II Serum-Free Expansion Medium Containing Erythroid Expansion Supplement Supports Greater Expansion of Erythroid Cells Than Other Media Tested

Figure 5. StemSpan™ SFEM II Serum-Free Expansion Medium Containing Erythroid Expansion Supplement Supports Greater Expansion of Erythroid Cells Than Other Media Tested

The numbers of erythroid cells, normalized relative to the values obtained in StemSpan™ SFEM medium (dark gray bar), obtained after culturing purified CD34 + CB cells for 14 days in StemSpan™ SFEM, SFEM II (gold bars) and ACF (orange bars), and six media from other commercial suppliers (light gray bars, Competitor 1-6, which included, in random order, X-Vivo-15 and HPGM (both from Lonza), StemLine II (Sigma), HP01 (Macopharma), StemPro34 (Life Technologies) and SCGM (Cellgenix). All media were supplemented with StemSpan™ Erythroid Expansion Supplement (Catalog #02692). Vertical lines indicate 95% confidence limits, the range within which 95% of results fall. The numbers of cells produced in StemSpan™ SFEM II were significantly higher than in all other media (*p<0.05, paired t-test, n=6).

Table 1. Production of Myeloid Cells from Human CB CD34+ Cells Cultured in SFEM II Containing Myeloid Expansion Supplement or Myeloid Expansion Supplement ll

StemSpan™ SFEM II Serum-Free Expansion Medium Containing Erythroid Expansion Supplement Supports Greater Expansion of Erythroid Cells Than Other Media Tested

Shown are numbers of total nucleated cells (TNCs) produced per input human CB-derived CD34+ cell and percentages of cells positive for myeloid markers CD13, CD14 and CD15 after 14 days of culture in SFEM II containing Myeloid Expansion Supplement (n = 14) or Myeloid Expansion Supplement II (n = 16). *95% confidence limits (CL); the range within which 95% of results typically fall.

StemSpan™ SFEM II Serum-Free Expansion Medium Containing Megakaryocyte Expansion Supplement Supports Greater Expansion of Megakaryocytes Than Other Media Tested

Figure 6. StemSpan™ SFEM II Serum-Free Expansion Medium Containing Megakaryocyte Expansion Supplement Supports Greater Expansion of Megakaryocytes Than Other Media Tested

The numbers of megakaryocytes, normalized relative to the values obtained in StemSpan™ SFEM medium (dark gray bar), obtained after culturing purified CD34 + CB cells for 14 days in StemSpan™ SFEM, SFEM II (gold bars) and ACF (orange bars), and six media from other commercial suppliers (light gray bars, Competitor 1-6, which included, in random order, StemLine II (Sigma), HPGM (Lonza), HP01 (Macopharma), SCGM (Cellgenix), StemPro34 (Life Technologies) and X-Vivo-15 (Lonza). All media were supplemented with StemSpan™ Megakaryocyte Expansion Supplement (Catalog #02696). Vertical lines indicate 95% confidence limits, the range within which 95% of results fall. The numbers of cells produced in the StemSpan™ media were significantly higher than in the other media (*p<0.01 paired t-test, n=6).

Figure 7. StemSpan™ SFEM II Serum-Free Expansion Medium Containing T Cell Progenitor Expansion Supplement Promotes the Expansion and Differentiation of CB-Derived CD34+ Cells into Pro- and Pre-T Cells

The average (A,C) frequencies and (B,D) numbers of (A,B) CD7+CD5+ pro-T cells and (C,D) CD7+CD1a+ pre-T cells on days 7, 14 and 21 of culture with the StemSpan™ T Cell Progenitor Differentiation Kit (Catalog #09900) are shown for 10 - 26 independent experiments. The average frequency of (A) pro- and (C) pre-T cells were 84% and 28% respectively, after 21 days of culture. All pro- and pre-T cells were found to express intracellular CD3 (data not shown). The number of (B) CD7+CD5+ pro-T cells increased (on average) ~10 - 100-fold every week, resulting in an average number of ~2100 pro-T cells produced per input CD34+ cell on day 21. After 21 days of culture (D) pre-T cells expressing CD7 and CD1a are present in large numbers, indicating the further differentiation of pro-T cells. The yield of (D) CD7+CD1a+ cells on day 21 was ~800 per input CD34+ cell. BM-derived CD34+ cells also expanded and differentiated to pro-T cells in stroma-free cultures with approximately 70 CD7+CD5+ cells produced per input CD34+ cell at day 21 (n = 3; data not shown). Vertical lines indicate 95% confidence limits (CL), the range within which 95% of results typically fall.

Publications

(14)
Nature communications 2019 sep

Tissue-resident memory CD8+ T cells amplify anti-tumor immunity by triggering antigen spreading through dendritic cells.

E. Menares et al.
Abstract
View Publication

Abstract

Tissue-resident memory CD8+ T (Trm) cells mediate potent local innate and adaptive immune responses and play a central role against solid tumors. However, whether Trm cells cross-talk with dendritic cells (DCs) to support anti-tumor immunity remains unclear. Here we show that antigen-specific activation of skin Trm cells leads to maturation and migration to draining lymph nodes of cross-presenting dermal DCs. Tumor rejection mediated by Trm cells triggers the spread of cytotoxic CD8+ T cell responses against tumor-derived neo- and self-antigens via dermal DCs. These responses suppress the growth of intradermal tumors and disseminated melanoma lacking the Trm cell-targeted epitope. Moreover, analysis of RNA sequencing data from human melanoma tumors reveals that enrichment of a Trm cell gene signature associates with DC activation and improved survival. This work unveils the ability of Trm cells to amplify the breath of cytotoxic CD8+ T cell responses through DCs, thereby strengthening anti-tumor immunity.
Cell stem cell 2019 mar

The NAD-Booster Nicotinamide Riboside Potently Stimulates Hematopoiesis through Increased Mitochondrial Clearance.

N. Vannini et al.
Abstract
View Publication

Abstract

It has been recently shown that increased oxidative phosphorylation, as reflected by increased mitochondrial activity, together with impairment of the mitochondrial stress response, can severely compromise hematopoietic stem cell (HSC) regeneration. Here we show that the NAD+-boosting agent nicotinamide riboside (NR) reduces mitochondrial activity within HSCs through increased mitochondrial clearance, leading to increased asymmetric HSC divisions. NR dietary supplementation results in a significantly enlarged pool of progenitors, without concurrent HSC exhaustion, improves survival by 80{\%}, and accelerates blood recovery after murine lethal irradiation and limiting-HSC transplantation. In immune-deficient mice, NR increased the production of human leucocytes from hCD34+ progenitors. Our work demonstrates for the first time a positive effect of NAD+-boosting strategies on the most primitive blood stem cells, establishing a link between HSC mitochondrial stress, mitophagy, and stem-cell fate decision, and unveiling the potential of NR to improve recovery of patients suffering from hematological failure including post chemo- and radiotherapy.
Science translational medicine 2019 jul

Therapeutically relevant engraftment of a CRISPR-Cas9-edited HSC-enriched population with HbF reactivation in nonhuman primates.

O. Humbert et al.
Abstract
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Abstract

Reactivation of fetal hemoglobin (HbF) is being pursued as a treatment strategy for hemoglobinopathies. Here, we evaluated the therapeutic potential of hematopoietic stem and progenitor cells (HSPCs) edited with the CRISPR-Cas9 nuclease platform to recapitulate naturally occurring mutations identified in individuals who express increased amounts of HbF, a condition known as hereditary persistence of HbF. CRISPR-Cas9 treatment and transplantation of HSPCs purified on the basis of surface expression of the CD34 receptor in a nonhuman primate (NHP) autologous transplantation model resulted in up to 30{\%} engraftment of gene-edited cells for >1 year. Edited cells effectively and stably reactivated HbF, as evidenced by up to 18{\%} HbF-expressing erythrocytes in peripheral blood. Similar results were obtained by editing highly enriched stem cells, defined by the markers CD34+CD90+CD45RA-, allowing for a 10-fold reduction in the number of transplanted target cells, thus considerably reducing the need for editing reagents. The frequency of engrafted, gene-edited cells persisting in vivo using this approach may be sufficient to ameliorate the phenotype for a number of genetic diseases.
Cell stem cell 2019 aug

Interconversion between Tumorigenic and Differentiated States in Acute Myeloid Leukemia.

M. D. McKenzie et al.
Abstract
View Publication

Abstract

Tumors are composed of phenotypically heterogeneous cancer cells that often resemble various differentiation states of their lineage of origin. Within this hierarchy, it is thought that an immature subpopulation of tumor-propagating cancer stem cells (CSCs) differentiates into non-tumorigenic progeny, providing a rationale for therapeutic strategies that specifically eradicate CSCs or induce their differentiation. The clinical success of these approaches depends on CSC differentiation being unidirectional rather than reversible, yet this question remains unresolved even in prototypically hierarchical malignancies, such as acute myeloid leukemia (AML). Here, we show in murine and human models of AML that, upon perturbation of endogenous expression of the lineage-determining transcription factor PU.1 or withdrawal of established differentiation therapies, some mature leukemia cells can de-differentiate and reacquire clonogenic and leukemogenic properties. Our results reveal plasticity of CSC maturation in AML, highlighting the need to therapeutically eradicate cancer cells across a range of differentiation states.
Nature communications 2019

Gene correction for SCID-X1 in long-term hematopoietic stem cells.

M. Pavel-Dinu et al.
Abstract
View Publication

Abstract

Gene correction in human long-term hematopoietic stem cells (LT-HSCs) could be an effective therapy for monogenic diseases of the blood and immune system. Here we describe an approach for X-linked sSevere cCombined iImmunodeficiency (SCID-X1) using targeted integration of a cDNA into the endogenous start codon to functionally correct disease-causing mutations throughout the gene. Using a CRISPR-Cas9/AAV6 based strategy, we achieve up to 20{\%} targeted integration frequencies in LT-HSCs. As measures of the lack of toxicity we observe no evidence of abnormal hematopoiesis following transplantation and no evidence of off-target mutations using a high-fidelity Cas9 as a ribonucleoprotein complex. We achieve high levels of targeting frequencies (median 45{\%}) in CD34+ HSPCs from six SCID-X1 patients and demonstrate rescue of lymphopoietic defect in a patient derived HSPC population in vitro and in vivo. In sum, our study provides specificity, toxicity and efficacy data supportive of clinical development of genome editing to treat SCID-Xl.
STEMCELL TECHNOLOGIES INC.’S QUALITY MANAGEMENT SYSTEM IS CERTIFIED TO ISO 13485. PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED.