Principles and Selection Strategies for Common Tissue Dissociation Enzymes
Principles and Selection Strategies for Common Tissue Dissociation Enzymes
Tissue dissociation is the process of controllably converting solid tissues into suspensions of single cells or small cell aggregates, and it represents a key initial step for experiments such as primary cell culture, immune cell isolation, organoid construction, and single-cell omics. Compared with purely mechanical disruption, tissue dissociation enzymes can efficiently break down the extracellular matrix and cell–cell junctions under relatively mild conditions, thereby improving dissociation efficiency while preserving cell viability and the integrity of surface markers as much as possible. Because different tissues vary markedly in terms of extracellular matrix composition, mechanical properties, and vascular or fat content, it is necessary to select the type, concentration, and combination of dissociation enzymes in a rational manner according to the tissue type, target cell population, and downstream applications, and to match these with appropriate temperature, digestion time, and mechanical shear intensity.
I. Basic Principles of Tissue Dissociation
The extracellular matrix is composed mainly of collagen, elastin, glycoproteins, and glycosaminoglycans, while cells are interconnected through tight junctions, adherens junctions, desmosomes, and related structures. In essence, tissue dissociation is the use of specific or relatively broad-spectrum hydrolytic enzymes to selectively cleave key components of these structures, thereby releasing cells from densely packed tissues.
Common tissue dissociation strategies usually consist of two parts:
(1) Chemical/enzymatic component:
Appropriate proteases and polysaccharide-hydrolyzing enzymes, or their combinations (such as collagenase, trypsin, dispase, DNase I, hyaluronidase, papain, etc.), are selected, and their concentrations and ratios are adjusted according to tissue type and the sensitivity of the target cells.
(2) Physical/mechanical component:
Gentle pipetting, shaking, rotation, or homogenization is applied to enhance tissue fragmentation and cell release, while avoiding excessive shear that would damage cells.
In practice, there is often a trade-off among dissociation efficiency, cell viability, and preservation of surface markers, and a balance must be found through pilot experiments and optimization of conditions.
II. Major Types and Characteristics of Tissue Dissociation Enzymes
1.Collagenase
Collagenase is one of the most widely used tissue dissociation enzymes. It hydrolyzes multiple collagen types (including type I, II, and IV), and is a core component for dissociating connective tissues and collagen-rich organs such as liver, adipose tissue, muscle, and many solid tumors. Common preparations include collagenase type I, II, IV, and various blends, which may also contain low levels of trypsin-like or other protease activities. Collagenase is typically used in Ca²⁺-containing buffers, with digestion at 37 °C for approximately 30–120 min, adjusted according to tissue density and the tolerance of target cells. When preservation of membrane receptors and cell–cell junctions is especially important, high-purity collagenase with tightly controlled contaminating protease activities, or optimized mixed tissue dissociation formulations, is generally preferred.
Catalog No. | Product Name | Grade and Purity |
Collagenase AF-1 | EnzymoPure™, ≥ 3.00 U/mg | |
Collagenase NB 1 From Clostridium Histolyticum | EnzymoPure™, ≥ 3.00 U/mg | |
Collagenase NB 4G From Clostridium Histolyticum | EnzymoPure™, Proved Grade,≥ 0.18 U/mg(PZ activity* acc. to Wünsch, 25 °C) | |
Collagenase NB 5 Sterile Grade | EnzymoPure™, sterile, ≥0.10 U/mg | |
Collagenase NB 6 From Clostridium Histolyticum | EnzymoPure™, GMP, ≥ 0.100 U/mg | |
Collagenase NB 7D from Clostridium Histolyticum | EnzymoPure™, sterile, ≥0.2 U/mg powder | |
Collagenase NB 8 From Clostridium Histolyticum | EnzymoPure™,Broad Range,≥ 0.90 U/mg | |
Collagenase from Clostridium histolyticum | Blend Type F,≥2.0 FALGPA units/mg solid | |
Collagenase from Clostridium histolyticum | High-purity, purified by chromatography, Type VII,≥4 FALGPA units/mg solid, lyophilized powder,≥700 CDU/mg solid (CDU = collagen digestion units) | |
Collagenase from Clostridium histolyticum | EnzymoPure™, Type V,≥1 FALGPA units/mg solid, ≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | Type IA, 0.5-5.0 FALGPA units/mg solid,≥125 CDU/mg solid, For general use | |
Collagenase from Clostridium histolyticum | sterile-filtered, Type IA-S, 0.5-5.0 FALGPA units/mg solid,≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | sterile-filtered, suitable for release of physiologically active rat epididymal adipocytes, Type II-S, 0.5-5.0 FALGPA units/mg solid,≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | 0.2 μm filtered, Type V-S,≥1 FALGPA units/mg solid,≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | Blend Type H,≥1.0 FALGPA units/mg solid | |
Collagenase from Clostridium histolyticum | lyophilized powder,≥125 CDU/mg solid (CDU = collagen digestion units), 0.5-5.0 FALGPA units/mg solid | |
Collagenase from Clostridium histolyticum | sterile-filtered, for cell culture, lyophilized powder, 0.5-5.0 FALGPA units/mg solid | |
Collagenase from Clostridium histolyticum | purified by chromatography,≥500 CDU/mg solid (CDU = collagen digestion units), lyophilized powder | |
Collagenase from Clostridium histolyticum | sterile-filtered, suitable for release of physiologically active rat hepatocytes, Type IV-S, 0.5-5.0 FALGPA units/mg solid,≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | Blend Type L, ≤1.0 FALGPA units/mg solid | |
Collagenase from Clostridium histolyticum | sterile-filtered, high purity, purified by chromatography, Type VII-S,≥4 FALGPA units/mg solid,≥700 CDU/mg solid (CDU = collagen digestion units) | |
Collagenase from Clostridium histolyticum | sterile-filtered, for general use, Type I-S, 0.2-1.0 FALGPA units/mg solid,≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | EnzymoPure™, Bioactive, 2-5 FALGPA U/mg solid, ≥800 CDU/mg solid | |
Collagenase from Clostridium histolyticum | EnzymoPure™, Native, suitable for release of physiologically active rat hepatocytes, 0.5-5.0 FALGPA U/mg solid, ≥125 CDU/mg solid | |
Collagenase from Clostridium histolyticum | EnzymoPure™, Native, suitable for release of physiologically active rat epididymal adipocytes, 0.5-5.0 FALGPA U/mg solid, ≥125 CDU/mg solid | |
Collagenase I from Clostridium histolyticum | ActiBioPure™, Bioactive, High Performance, EnzymoPure™, Native, ≥125 U/mg powder | |
Collagenase II from Clostridium histolyticum | ActiBioPure™, Bioactive, High Performance, EnzymoPure™, Native, ≥125 U/mg powder |
2.Trypsin
Trypsin is a serine protease that preferentially cleaves peptide bonds at lysine and arginine residues and is one of the most commonly used enzymes for cell dissociation. In tissue dissociation, trypsin is often used in combination with EDTA to disrupt cell–cell and cell–matrix adhesions; however, it has a strong proteolytic effect on cell-surface proteins and receptors, and prolonged or high-concentration treatment can adversely impact subsequent immunostaining and functional assays. For primary cells or sensitive cell types, low-concentration, short-duration digestion is generally used, or relatively mild alternatives (such as trypsin-substitute dissociation solutions) are employed instead.
Catalog No. | Product Name | Grade and Purity |
Rapid-Trypsin (MS) | Animal Free, Carrier Free, EnzymoPure™, Recombinant, suitable for mass spectrometry (MS), ≥95%(SDS-PAGE), ≥3800USP U/mg protein | |
Trypsin, Human Pancreas | Bioactive, Native, ≥95%(SDS-PAGE), Pre-lyophilization Protein Concentration | |
Trypsin from human pancreas | salt-free, lyophilized powder, Each of≥1,000 BAEE units | |
Trypsin from bovine pancreas | EnzymoPure™, potency ≥3000 units/mg | |
Trypsin from bovine pancreas | USP, ≥2,500 USP units/mg solid | |
Trypsin from bovine pancreas | EnzymoPure™, ≥180 units/mg protein | |
Trypsin from bovine pancreas | BioReagent, for cell culture, essentially salt-free, lyophilized powder,≥9,000 BAEE units/mg protein | |
Trypsin from bovine pancreas | Type XI, lyophilized powder,≥6,000 BAEE units/mg protein | |
Trypsin from bovine pancreas | ActiBioPure™, GMP, Bioactive, EnzymoPure™, High Performance, >450 USP U/mg powder | |
Trypsin from bovine pancreas | ActiBioPure™, Bioactive, GMP, High Performance, EnzymoPure™, >4000 USP U/mg powder | |
Trypsin from bovine pancreas | EnzymoPure™, TPCK Treated, essentially salt-free, lyophilized powder,≥10,000 BAEE units/mg protein | |
Trypsin from bovine pancreas(0.22 μm,Filtered) | EnzymoPure™, ≥180 units/mg protein (10,350 BAEE/3,450 USP/NF units/mg protein) | |
Trypsin from bovine pancreas(2X,Sterile,Irradiated) | EnzymoPure™, ≥180 units/mg protein (10,350 BAEE/3,450 USP/NF units/mg protein) | |
Trypsin from bovine pancreas(TPCK Treated) | EnzymoPure™, ≥180 units/mg protein (10,350 BAEE/3,450 USP/NF units/mg protein) | |
T128773 | Trypsin from bovine pancreas(TPCK-Treated,Irradiated) | EnzymoPure™, ≥180 units/mg protein |
Trypsin from bovine pancreas(Modified,Sequencing Grade) | EnzymoPure™, suitable for mass spectrometry (MS), ≥150 units/mg protein(at least 8,625 BAEE/2875 USP/NF units/mg protein) | |
Trypsin from bovine pancreas(Purified,Sequencing Grade II) | EnzymoPure™, suitable for mass spectrometry (MS), ≥150 units/mg protein (at least 8,625 BAEE/2875 USP/NF units/mg protein) | |
Trypsin from porcine pancreas | Native,EnzymoPure™,≥250 USP U/mg | |
Trypsin from porcine pancreas | BioReagent, for cell culture, lyophilized powder, 1,000-2,000 BAEE units/mg solid | |
Trypsin from porcine pancreas | ActiBioPure™, Bioactive, High Performance, EnzymoPure™, 13,000-20,000 BAEE U/mg powder | |
Trypsin from porcine pancreas | γ-irradiated, BioReagent, for cell culture, lyophilized powder, 1,000-2,000 BAEE units/mg solid | |
Trypsin from porcine pancreas | tablet, 1 mg tablet | |
Trypsin solution from porcine pancreas | sterile-filtered, BioReagent, for cell culture, 1 ×, 2.5 g porcine trypsin per liter in Hanks′ Balanced Salt Solution with phenol red | |
Trypsin-EDTA | 0.25%，sterile,No Phenol Red | |
Trypsin-Chymotrypsin 1:1 |
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Trypsin-Chymotrypsin 1:250 |
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Trypsin-Chymotrypsin 6:1 |
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Trypsin/Lys-C Mix (MS) | ActiBioPure™, Bioactive, EnzymoPure™, Animal Free, Carrier Free, GMP, for protein sequencing, Recombinant, suitable for mass spectrometry (MS), ≥95%(SDS-PAGE), expressed in E.coli & Pichia pastoris;≥3800 USP U/mg protein | |
Trypsin−Agarose | buffered aqueous suspension, from bovine pancreas trypsin | |
Trypsinogen from Bovine Pancreas | BioReagent, ≥85% | |
Trypsin Inhibitor from Soybean | ActiBioPure™, Bioactive, BioReagent, lyophilized powder, ~10000 U/mg | |
Trypsin Inhibitor from Glycine max (soybean) | UltraBio™, ≥95%(Kunitz inhibitor, SDS-PAGE), lyophilized powder | |
Trypsin Inhibitor from Soybean | ActiBioPure™, Bioactive, BioReagent, lyophilized powder | |
Trypsin Inhibitor, Defined (1X) Solution | Animal Free, BioReagent, for cell culture | |
Trypsin from bovine pancreas | EnzymoPure™, potency ≥2500 units/mg | |
Trypsin | EnzymoPure™, 1:250，Tissue Culture Grade | |
Trypsin (MS) | Animal Free, Carrier Free, Recombinant, suitable for mass spectrometry (MS), EnzymoPure™, ≥13000U/mg protein | |
Trypsin, Porcine, MS Grade | Proteomics grade, ≥10,000 U/mg |
3.Dispase
Dispase is a neutral metalloproteinase that gently dissociates basement membrane components and cell–cell junctions, and is commonly used for detaching epithelial cell sheets, dissociating skin and corneal tissues, and passaging stem cells and organoids as small clusters. Compared with conventional trypsin, Dispase causes less damage to cell-surface markers and is therefore suitable for experiments that require preservation of adhesion molecules and stem cell markers; it is often used in combination with collagenase or DNase I for stepwise dissociation of complex tissues.
Catalog No. | Product Name | Grade and Purity |
Endoproteinase Asp-N | Animal-free, Carrier-free, Bioactive, ActiBioPure™, EnzymoPure™, for protein sequencing, mass spectrometry grade (MS), recombinant, ≥97% (HPLC), Bioactivity: ≥1800 U/mg protein | |
Neutral Protease AF From Clostridium Histolyticum | EnzymoPure™, ≥0.50 U/mg | |
Neutral Protease NB From Clostridium Histolyticum | EnzymoPure™, ≥0.50 U/mg | |
Neutral Protease NB From Clostridium Histolyticum | EnzymoPure™, ≥0.50 U/mg | |
Neutral Protease NB From Clostridium Histolyticum | EnzymoPure™, High Active Grade, ≥4.00 U/mg | |
Neutral Protease from Bacillus polymyxa (Purified) | EnzymoPure™, ≥4 units/mg dry weight | |
Neutral Protease from Bacillus polymyxa (Partially Purified) | EnzymoPure™, ≥0.1 units/mg dry weight | |
Proteinase from Aspergillus melleus | ActiBioPure™, Bioactive, High Performance, Native, EnzymoPure™, ≥3 U/mg enzyme powder | |
Peptidase | EnzymoPure™, ≥1100 LAPU/g |
4.DNase I
During tissue dissociation, extensive cell death releases nucleic acids, which markedly increase solution viscosity, hinder pipetting and filtration, and promote cell clumping. DNase I can hydrolyze free DNA, thereby reducing solution viscosity and improving the quality of the single-cell suspension. DNase I is typically added as an auxiliary component to collagenase-based or mixed enzymatic dissociation systems, and is particularly important when dissociating tumors, spleen, and other blood-rich tissues.
Catalog No. | Product Name | Grade and Purity |
Deoxyribonuclease I from bovine pancreas | EnzymoPure™, ≥2,000 Kunitz units/mg dry weight；from bovine pancreas | |
Deoxyribonuclease I from Bovine Pancreas(Ribonuclease&Protease Free) | EnzymoPure™, from bovine pancreas；≥2,000 units/mg dry weight；Ribonuclease & Protease-free | |
Deoxyribonuclease I from Bovine Pancreas(Filtered) | EnzymoPure™, ≥2,000 Kunitz units/mg dry weight;Filtered;from bovine pancreas | |
Deoxyribonuclease I from Bovine Pancreas(RNase & Protease Free,Solution) | EnzymoPure™, ≥2,000 Kunitz units/ml；from bovine pancreas；Ribonuclease & Protease-free，Solution | |
Deoxyribonuclease I from bovine pancreas(Recombinant) | EnzymoPure™, Recombinant, ≥5000 units/mg protein；from bovine pancreas | |
DNase | EnzymoPure™, ≥2,000 Kunitz units/mg protein；from bovine pancreas | |
Deoxyribonuclease I from Pichia pastoris (Recombinant,Solution) | EnzymoPure™, Recombinant, ≥2 units/ul；from Pichia pastoris；Solution | |
Deoxyribonuclease I from bovine pancreas | lyophilized powder, Protein≥85 %,≥400 Kunitz units/mg protein | |
Deoxyribonuclease I from bovine pancreas | Type IV, lyophilized powder,≥2,000 Kunitz units/mg protein | |
Deoxyribonuclease I from bovine pancreas | Type II, lyophilized powder, Protein≥80 %,≥2,000 units/mg protein | |
Deoxyribonuclease I from bovine pancreas | Type II-S, lyophilized powder, Protein≥80 %,≥2,000 units/mg protein | |
DNase I | Recombinant, PharmPure™, endotoxin tested, EnzymoPure™, ≥95%, 1.8KU/ml-2.2KU/ml |
5.Hyaluronidase and other polysaccharide hydrolases
Hyaluronidase degrades hyaluronic acid and other glycosaminoglycans, increasing interstitial space and tissue permeability, and can enhance the dissociation efficiency of other proteases in mucopolysaccharide-rich tissues such as connective tissue and tumor stroma. Some commercial tissue dissociation systems also include neutral proteases, elastase, or specially optimized enzyme cocktails (for example, combinations containing collagenase + neutral protease + DNase I) to improve cell yield and shorten digestion time.
Catalog No. | Product Name | Grade and Purity |
Hyaluronidase | ≥1000 IU/mg，derived from bovine testicles | |
Hyaluronidase | EnzymoPure™, ≥ 300 IU/mg，derived from bovine testicles | |
Hyaluronidase | EnzymoPure™, ≥ 300 IU/mg,from Streptomyces hyalurolyticus | |
Hyaluronidase | EnzymoPure™, ≥ 3000 IU/mg，derived from bovine testicles | |
Hyaluronidase from bovine testes | EnzymoPure™, lyophilized powder, 400-1000 units/mg solid | |
Hyaluronidase from bovine testes | ActiBioPure™, Bioactive, High Performance, EnzymoPure™, ≥300 U/mg powder | |
Hyaluronidase from bovine testes | Bioactive,ActiBioPure™,High Performance,EnzymoPure™,Native,≥300 USP/NF units/mg dry weight | |
Hyaluronidase from bovine testes(Purified) | EnzymoPure™, ≥3,000 USP/NF units/mg dry weight | |
Hyaluronidase from sheep testes | Bioactive, ActiBioPure™, EnzymoPure™, Native, High Performance, endotoxin tested, ≥1000 IU/mg dry weight | |
Hyaluronidase from sheep testes | Bioactive, ActiBioPure™, Native, endotoxin tested, High Performance, EnzymoPure™, ≥3000 IU/mg dry weight | |
Hyaluronidase from Bovine Testes | EnzymoPure™, ≥400 u/mg | |
Hyaluronidase（specificity for hyaluronate sodium） | EnzymoPure™, ≥2000UN/mg，from Streptomyces hyalurolyticus | |
Recombinant Hyaluronidase | ActiBioPure™, Bioactive, Animal Free, High Performance, EnzymoPure™, Recombinant, ≥95%(SDS-PAGE), >60000U/mL, >60000U/mg protein |
6.Papain and other mild proteases
Papain and other cysteine proteases are commonly used for neural tissue dissociation and are characterized by relatively mild proteolytic activity, making them superior to harsh proteases in preserving neuronal viability and neurite structures. Using a cystine/cysteine-based buffer system can further enhance their stability and enzymatic activity.
Catalog No. | Product Name | Grade and Purity |
Papain | EnzymoPure™, lyophilized powder,≥10 units/mg，with BAEE as substrate | |
Papain | EnzymoPure™, 10mM in DMSO | |
Papain | EnzymoPure™, ≥2000units/mg，with casein as substrate | |
Papain from Carica papaya | solution, light brown,≥10 U/mg protein (~25 mg/ml) | |
Papain from Carica papaya Latex(Lyophilized) | EnzymoPure™, ≥15 units/mg protein，with BAEE as substrate | |
Papain from Carica papaya Latex(Suspension) | EnzymoPure™, ≥20 units/mg protein，with BAEE as substrate |
III. Key Factors Influencing Tissue Dissociation Efficiency
1.Tissue Type and Matrix Composition
Different tissues vary markedly in collagen content, fat proportion, vascular density, and basement membrane architecture. Soft organs (e.g., liver, spleen) are relatively easy to dissociate, whereas dense connective tissues or tumor stroma often require higher enzymatic activity or combinations of multiple enzymes. When designing a dissociation protocol, the anatomical and matrix characteristics of the target tissue should be taken into account to decide whether to use a collagenase-dominated strategy or a strategy based primarily on mild proteases.
2.Enzyme Type, Concentration, and Temperature
The choice of enzyme determines the substrate spectrum, while concentration and temperature together govern reaction rate and the extent of cellular damage. Most tissue dissociation procedures are carried out at 37 °C, and the working concentrations of collagenase, Dispase, and trypsin need to be optimized in preliminary experiments to avoid “over-digestion,” which can destroy cell surface proteins and reduce cell viability. For sensitive cell types, the temperature can be reduced with a corresponding extension of digestion time, or a two-step dissociation strategy can be used (initial mild enzymatic digestion followed by gentle mechanical dissociation).
3.Digestion Time and Mechanical Shear
Digestion time and the intensity of mechanical shear directly influence dissociation efficiency and cell survival. If the digestion time is too short, residual tissue fragments remain and single-cell yield is low; if too long, cell death and stress responses increase. A common approach is to apply intermittent gentle pipetting or slow shaking on an orbital shaker during enzymatic digestion, and to determine the optimal digestion time at a given enzyme concentration using small-volume pilot experiments.
4.Ionic Environment and Additives
Certain enzymes (such as collagenase) require divalent cations such as Ca²⁺ to maintain activity, whereas EDTA can enhance dissociation of cell–cell junctions. Buffers typically include HEPES, PBS, or HBSS, with optional addition of BSA to protect the plasma membrane and DNase I to reduce viscosity. To terminate the reaction, culture medium containing fetal bovine serum or specific protease inhibitors is commonly used to rapidly inactivate the proteases.
IV. Typical Application Scenarios
1.Preparation of Primary Cells and Organoids
In tissues such as liver, lung, kidney, and intestine, collagenase is often used in combination with Dispase and DNase I to generate single-cell suspensions or small cell clusters enriched in viable cells for primary cell culture and organoid initiation. Organoid systems generally place more emphasis on “fragmented” rather than fully single-cell dissociation in order to preserve local cell–cell architecture; in this case, enzyme concentrations and mechanical shear strength can be reduced accordingly.
2.Isolation of Immune Cells and Tumor Cells
Dissociation of spleen, lymph nodes, and tumor tissues usually needs to balance cell yield with preservation of surface markers. Collagenase combined with DNase I is a common formulation, and the addition of mild neutral proteases can improve dissociation efficiency in dense tumor tissues. After dissociation, residual tissue fragments are typically removed by passing the suspension through a cell strainer, followed by density-gradient separation or magnetic bead sorting to enrich defined immune cell populations.
3.Sample Preparation for Single-Cell Omics
Single-cell RNA-seq, single-cell ATAC-seq, and related techniques are highly sensitive to cell viability and transcriptional state, requiring rapid completion of dissociation, filtration, and sample loading. Such applications commonly employ specially optimized mixed tissue dissociation enzyme cocktails (containing collagenase, mild proteases, and DNase I), and subsequent processing steps are performed on ice or at 4 °C to accelerate handling while minimizing stress-induced transcriptional changes.
4.Tissue Engineering and Regenerative Medicine
In cartilage, bone, myocardium, and other tissue engineering studies, tissue dissociation enzymes are used to obtain highly viable seed cells or cell aggregates for reconstructing three-dimensional tissue structures on scaffold materials. In this context, sufficient dissociation efficiency is required while limiting damage to adhesion receptors and extracellular matrix fragments. Low-concentration, multiple short-term digestions are frequently employed as a strategy.
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