Preservation of Cells :A Practical Manual

Chapter

Chapter 1 Introduction

Mammalian Cells: Modern Workhorses

Products from Cells

Cells as Therapeutic Agents

Biomarkers for Health or Disease

In Vitro Models

Bridging the Gap

The Preservation Toolkit

Hypothermic Storage

Cryopreservation

Vitrification

Dry State Storage

Fit-for-Purpose

One Size Does Not Fit All

The Process is the Product

Reproducibility

Safety

Dispelling the Myth of the Cold Black Box

References

Chapter 2 Pre-freeze Processing and Characterization

Pre-freeze Processing

Digestion of Cells from Intact Tissue

Hypothermic Storage

Selection of Subpopulations

Activation or Stimulation

Genetic Modification

Culture

Pre-freeze Process Monitoring

Pre-freeze Characterization

Identity

Genetic Stability

Enumeration

Purity

Adventitious Agents

Microbial Testing of Cell Therapy Products

Special Considerations for the Characterization of Cell Therapies

Annotation of Pre-freeze Processing

Scientific Principles

Putting Principles into Action

References

Chapter 3 Formulation and Introduction of Cryopreservation Solutions

Importance of Cryoprotective Agents

Mechanisms of Cryoprotection

Formulating a Cryopreservation Solution

Formulation of a Vitrification Solution

Characterization and Quality Control for Cryoprotective Solutions

Toxicity of CPAs

Osmotic Toxicity

Biochemical Toxicity

Developing a Protocol for Introducing CPA Solutions

The Basic Experiment

Introduction of Vitrification Solutions

Cell Concentration

Removal of CPA Solution

Safety Considerations for Cryopreservation Solutions

Cryopreservation Containers

Overwraps

Labeling

Sample Annotation

Scientific Principles

Putting Principles into Practice

References

Chapter 4 Freezing Protocols

Importance of Cooling Rate

Controlled-rate Freezing

Controlled Cooling-rate Protocols

Segment 1: Initial Hold Period

Segment 2: Cooling

Uncontrolled Nucleation

Manual Nucleation

Automatic Nucleation

Verifying Segment 2 (Including S2a)

“Delayed” Latent Heat

Segment 3

Verifying Segment 3

Other Types of Controlled-rate Protocols

Passive Freezing

Transfer to Storage

Vitrification

Independent Temperature Measurement

Scientific Principles

Putting Principles into Practice

References

Chapter 5 Storage and Shipping of Frozen Cells

Scientific Basis for Selection of a Storage Temperature

Additional Considerations for Vitrified Samples

Standards, Guidelines, and Best Practices

Facilities

Storage Equipment and Environment

Mapping Storage Devices and Setting Alarm Limits

Monitoring Systems

Safety

Inventory Management System

Stability in Storage

Temperature Fluctuations

Influence of Background Ionizing Radiation on Stability in Storage

Shelf-Life of Samples in Storage

Fit-for-Purpose Storage Practices

Risk Mitigation in Long-Term Storage

Shipping or Transport of Cells

General Shipping Considerations

Liquid Nitrogen Dry Shippers

Temperature Mapping of a Shipper

Packaging of Samples Being Shipped

Monitoring of Shipments

Responsibilities

Sample Annotation

Scientific Principles

Putting Principles into Practice

References

Chapter 6 Thawing and Post-Thaw Processing

Thawing Equipment

Transporting Samples Prior to Thawing

Estimating Your Thawing Rate

Thawing and Infusion of Cell Therapy Products

Safety Considerations for Thawing

Post-Thaw Processing

Post-Thaw Washing

Dilution

Infusion of Cells Immediately Post-Thaw

Removal of Vitrification Solutions

Wash Solutions

Scientific Principles

Putting Principles into Practice

References

Chapter 7 Post-Thaw Assessment

Common Measures Used in Post‐Thaw Assessment

Physical Integrity

Metabolic Activity

Mechanical Activity

Mitotic Activity

Differentiation Potential

Transplantation Potential

Strategies to Improve the Accuracy and Reproducibility of Post-Thaw Assessment

Eliminate Measurement Bias

Compensating for Post-Thaw Apoptosis

Post-Thaw Assessment Using a Single Measure

Optical Methods of Post‐Thaw Assessment

Release Criteria

Scientific Principles

Putting Principles into Practice

References

Chapter 8 Algorithm-Driven Protocol Optimization

Small Cell Number/High Throughput Approach

Validating Operation of the Algorithm

Flexibility

Practical Notes

Modeling in Cryobiology

References

Introduction

ProtocolContributors

Cryopreservation of Endothelial Cells in Suspension

Principle

Equipmentand Supplies

Equipment

Supplies

Safety

Procedure

Cell Preparation

Preparation of Cryoprotectant Solution

Using Powdered HES

Using Pentastarch Solution

Cryoprotectant Addition

Freezing

Controlled-rate Freezing with a Methanol Bath

Alternative Freezing Procedure

Thawing

Expected Results

References

Cryopreservation of Peripheral Blood Mononuclear Cells from Whole Blood

Principle

Protocol 1: Isolation of PBMCS Directly over Ficoll-Hypaque

Equipment

Materials

Reagents

Procedure

Protocol 2: Isolation of PBMCS Using SepMates

Equipment

Materials

Reagents

Procedure

Materials

Appendix A Human Serum AB Freezing Media

Equipment

Reagents

Procedure

Cryopreservation of Human Adipose Stem Cells

Principle

Equipmentand Supplies

Reagentsand Media

Procedure

Isolation of Human ASCs from Lipoaspirate

Magnetic Cell Sorting (Optional)

Cryopreservation

Controlled-rate Freezing of Human ASCs

Thawing Human ASCs

Notes

Reference

Cryopreservation of Red Blood Cells

MethodI: High Glycerol/Slow Cooling Technique (Meryman and Hornblower 1972)

Preparation of the RBC Concentrate

Addition of the Cryoprotective Solution

Cooling

Rewarming

Removal of the Cryoprotectant and Debris

MethodII: A Low Glycerol/Rapid Cooling Technique (Rowe, Eyster, and Kellner 1968)

MethodIII: Hydroxyethylstarch/Rapid Cooling Technique (Sputtek 2007)

References

Cryopreservation of Oocytes by Slow Freezing

Principle

SpecimenRequirements

Equipmentand Supplies Needed

Equipment

Supplies

Procedure

Safety

Calculations

Reporting Results

ProcedureNotes

Limitationsof Procedure

Oocyte Vitrification and Warming

Principle

Equipmentand Supplies

Equipment

Supplies

Procedure

QualityControl

Safety

Transportation of Hematopoietic Progenitor Cells and Other Cellular Products

Principle/Rationale

Specimen

Equipment/Reagents

QualityControl

Procedure

AdditionalInformation

FurtherReading

Cryopreservation of Hematopoietic Progenitor Cells

Principle/Rationale

Specimen

Equipment/Reagents

QualityControl

Procedure

Appendix A Alternate Cryopreservation HarnessSet-2 or 4 Bags

FurtherReading

Thawing of Hematopoietic Progenitor Cells

Principle/Rationale

Equipment/Reagents

QualityControl

Procedure

FurtherReading

Processing and Cryopreservation of T-Cells

Principle/Rationale

Protocol/Processing Schema: N/A

Specimens

Equipment/Reagents

QualityControl

Procedure

FurtherReading

Thawing and Reinfusion of Cryopreserved T-Cells

Principle/Rationale

Protocol/Processing Schema

Specimen

Equipment/Reagents

QualityControl

Procedure

Further Reading

Index

EULA

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