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
C278962	Collagenase AF-1	EnzymoPure™, ≥ 3.00 U/mg
C278974	Collagenase NB 1 From Clostridium Histolyticum	EnzymoPure™, ≥ 3.00 U/mg
C279008	Collagenase NB 4G From Clostridium Histolyticum	EnzymoPure™, Proved Grade,≥ 0.18 U/mg(PZ activity* acc. to Wünsch, 25 °C)
C279009	Collagenase NB 5 Sterile Grade	EnzymoPure™, sterile, ≥0.10 U/mg
C278976	Collagenase NB 6 From Clostridium Histolyticum	EnzymoPure™, GMP, ≥ 0.100 U/mg
C278996	Collagenase NB 7D from Clostridium Histolyticum	EnzymoPure™, sterile, ≥0.2 U/mg powder
C278989	Collagenase NB 8 From Clostridium Histolyticum	EnzymoPure™,Broad Range,≥ 0.90 U/mg
C754907	Collagenase from Clostridium histolyticum	Blend Type F,≥2.0 FALGPA units/mg solid
C754919	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)
C754925	Collagenase from Clostridium histolyticum	EnzymoPure™, Type V,≥1 FALGPA units/mg solid, ≥125 CDU/mg solid
C754928	Collagenase from Clostridium histolyticum	Type IA, 0.5-5.0 FALGPA units/mg solid,≥125 CDU/mg solid, For general use
C754914	Collagenase from Clostridium histolyticum	sterile-filtered, Type IA-S, 0.5-5.0 FALGPA units/mg solid,≥125 CDU/mg solid
C754913	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
C754902	Collagenase from Clostridium histolyticum	0.2 μm filtered, Type V-S,≥1 FALGPA units/mg solid,≥125 CDU/mg solid
C754910	Collagenase from Clostridium histolyticum	Blend Type H,≥1.0 FALGPA units/mg solid
C754924	Collagenase from Clostridium histolyticum	lyophilized powder,≥125 CDU/mg solid (CDU = collagen digestion units), 0.5-5.0 FALGPA units/mg solid
C754916	Collagenase from Clostridium histolyticum	sterile-filtered, for cell culture, lyophilized powder, 0.5-5.0 FALGPA units/mg solid
C754905	Collagenase from Clostridium histolyticum	purified by chromatography,≥500 CDU/mg solid (CDU = collagen digestion units), lyophilized powder
C754917	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
C754901	Collagenase from Clostridium histolyticum	Blend Type L, ≤1.0 FALGPA units/mg solid
C754912	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)
C754915	Collagenase from Clostridium histolyticum	sterile-filtered, for general use, Type I-S, 0.2-1.0 FALGPA units/mg solid,≥125 CDU/mg solid
C754926	Collagenase from Clostridium histolyticum	EnzymoPure™, Bioactive, 2-5 FALGPA U/mg solid, ≥800 CDU/mg solid
C754933	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
C754929	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
A1492718	Collagenase I from Clostridium histolyticum	ActiBioPure™, Bioactive, High Performance, EnzymoPure™, Native, ≥125 U/mg powder
A1492720	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
R1456327	Rapid-Trypsin (MS)	Animal Free, Carrier Free, EnzymoPure™, Recombinant, suitable for mass spectrometry (MS), ≥95%(SDS-PAGE), ≥3800USP U/mg protein
np001008	Trypsin, Human Pancreas	Bioactive, Native, ≥95%(SDS-PAGE), Pre-lyophilization Protein Concentration
T755289	Trypsin from human pancreas	salt-free, lyophilized powder, Each of≥1,000 BAEE units
T105533	Trypsin from bovine pancreas	EnzymoPure™, potency ≥3000 units/mg
T755931	Trypsin from bovine pancreas	USP, ≥2,500 USP units/mg solid
T128774	Trypsin from bovine pancreas	EnzymoPure™, ≥180 units/mg protein
T755937	Trypsin from bovine pancreas	BioReagent, for cell culture, essentially salt-free, lyophilized powder,≥9,000 BAEE units/mg protein
T755326	Trypsin from bovine pancreas	Type XI, lyophilized powder,≥6,000 BAEE units/mg protein
np225024	Trypsin from bovine pancreas	ActiBioPure™, GMP, Bioactive, EnzymoPure™, High Performance, >450 USP U/mg powder
T755932	Trypsin from bovine pancreas	ActiBioPure™, Bioactive, GMP, High Performance, EnzymoPure™, >4000 USP U/mg powder
T755333	Trypsin from bovine pancreas	EnzymoPure™, TPCK Treated, essentially salt-free, lyophilized powder,≥10,000 BAEE units/mg protein
T128775	Trypsin from bovine pancreas(0.22 μm,Filtered)	EnzymoPure™, ≥180 units/mg protein (10,350 BAEE/3,450 USP/NF units/mg protein)
T128772	Trypsin from bovine pancreas(2X,Sterile,Irradiated)	EnzymoPure™, ≥180 units/mg protein (10,350 BAEE/3,450 USP/NF units/mg protein)
T128771	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
T128769	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)
T128770	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)
T105532	Trypsin from porcine pancreas	Native,EnzymoPure™,≥250 USP U/mg
T754931	Trypsin from porcine pancreas	BioReagent, for cell culture, lyophilized powder, 1,000-2,000 BAEE units/mg solid
T755927	Trypsin from porcine pancreas	ActiBioPure™, Bioactive, High Performance, EnzymoPure™, 13,000-20,000 BAEE U/mg powder
T755628	Trypsin from porcine pancreas	γ-irradiated, BioReagent, for cell culture, lyophilized powder, 1,000-2,000 BAEE units/mg solid
T755303	Trypsin from porcine pancreas	tablet, 1 mg tablet
T755941	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
T301862	Trypsin-EDTA	0.25%，sterile,No Phenol Red
T1432276	Trypsin-Chymotrypsin 1:1
T1433391	Trypsin-Chymotrypsin 1:250
T1439760	Trypsin-Chymotrypsin 6:1
rp227305	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
T755263	Trypsin−Agarose	buffered aqueous suspension, from bovine pancreas trypsin
rp222677	Trypsinogen from Bovine Pancreas	BioReagent, ≥85%
T755299	Trypsin Inhibitor from Soybean	ActiBioPure™, Bioactive, BioReagent, lyophilized powder, ~10000 U/mg
T755595	Trypsin Inhibitor from Glycine max (soybean)	UltraBio™, ≥95%(Kunitz inhibitor, SDS-PAGE), lyophilized powder
T755343	Trypsin Inhibitor from Soybean	ActiBioPure™, Bioactive, BioReagent, lyophilized powder
T755849	Trypsin Inhibitor, Defined (1X) Solution	Animal Free, BioReagent, for cell culture
T105531	Trypsin from bovine pancreas	EnzymoPure™, potency ≥2500 units/mg
T274333	Trypsin	EnzymoPure™, 1:250，Tissue Culture Grade
R1374101	Trypsin (MS)	Animal Free, Carrier Free, Recombinant, suitable for mass spectrometry (MS), EnzymoPure™, ≥13000U/mg protein
T755294	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
rp227286	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
N278967	Neutral Protease AF From Clostridium Histolyticum	EnzymoPure™, ≥0.50 U/mg
N279015	Neutral Protease NB From Clostridium Histolyticum	EnzymoPure™, ≥0.50 U/mg
N278984	Neutral Protease NB From Clostridium Histolyticum	EnzymoPure™, ≥0.50 U/mg
N279017	Neutral Protease NB From Clostridium Histolyticum	EnzymoPure™, High Active Grade, ≥4.00 U/mg
N128693	Neutral Protease from Bacillus polymyxa (Purified)	EnzymoPure™, ≥4 units/mg dry weight
N128694	Neutral Protease from Bacillus polymyxa (Partially Purified)	EnzymoPure™, ≥0.1 units/mg dry weight
P755310	Proteinase from Aspergillus melleus	ActiBioPure™, Bioactive, High Performance, Native, EnzymoPure™, ≥3 U/mg enzyme powder
P757723	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
D128592	Deoxyribonuclease I from bovine pancreas	EnzymoPure™, ≥2,000 Kunitz units/mg dry weight；from bovine pancreas
D128591	Deoxyribonuclease I from Bovine Pancreas(Ribonuclease&Protease Free)	EnzymoPure™, from bovine pancreas；≥2,000 units/mg dry weight；Ribonuclease & Protease-free
D128598	Deoxyribonuclease I from Bovine Pancreas(Filtered)	EnzymoPure™, ≥2,000 Kunitz units/mg dry weight;Filtered;from bovine pancreas
D128590	Deoxyribonuclease I from Bovine Pancreas(RNase & Protease Free,Solution)	EnzymoPure™, ≥2,000 Kunitz units/ml；from bovine pancreas；Ribonuclease & Protease-free，Solution
D128586	Deoxyribonuclease I from bovine pancreas(Recombinant)	EnzymoPure™, Recombinant, ≥5000 units/mg protein；from bovine pancreas
D106200	DNase	EnzymoPure™, ≥2,000 Kunitz units/mg protein；from bovine pancreas
D128589	Deoxyribonuclease I from Pichia pastoris (Recombinant,Solution)	EnzymoPure™, Recombinant, ≥2 units/ul；from Pichia pastoris；Solution
D755016	Deoxyribonuclease I from bovine pancreas	lyophilized powder, Protein≥85 %,≥400 Kunitz units/mg protein
D755014	Deoxyribonuclease I from bovine pancreas	Type IV, lyophilized powder,≥2,000 Kunitz units/mg protein
D755012	Deoxyribonuclease I from bovine pancreas	Type II, lyophilized powder, Protein≥80 %,≥2,000 units/mg protein
D755013	Deoxyribonuclease I from bovine pancreas	Type II-S, lyophilized powder, Protein≥80 %,≥2,000 units/mg protein
D406460	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
H754463	Hyaluronidase	≥1000 IU/mg，derived from bovine testicles
H141272	Hyaluronidase	EnzymoPure™, ≥ 300 IU/mg，derived from bovine testicles
H298749	Hyaluronidase	EnzymoPure™, ≥ 300 IU/mg,from Streptomyces hyalurolyticus
H754887	Hyaluronidase	EnzymoPure™, ≥ 3000 IU/mg，derived from bovine testicles
H754935	Hyaluronidase from bovine testes	EnzymoPure™, lyophilized powder, 400-1000 units/mg solid
np225049	Hyaluronidase from bovine testes	ActiBioPure™, Bioactive, High Performance, EnzymoPure™, ≥300 U/mg powder
H128644	Hyaluronidase from bovine testes	Bioactive,ActiBioPure™,High Performance,EnzymoPure™,Native,≥300 USP/NF units/mg dry weight
H128645	Hyaluronidase from bovine testes(Purified)	EnzymoPure™, ≥3,000 USP/NF units/mg dry weight
H754922	Hyaluronidase from sheep testes	Bioactive, ActiBioPure™, EnzymoPure™, Native, High Performance, endotoxin tested, ≥1000 IU/mg dry weight
H1492276	Hyaluronidase from sheep testes	Bioactive, ActiBioPure™, Native, endotoxin tested, High Performance, EnzymoPure™, ≥3000 IU/mg dry weight
H304866	Hyaluronidase from Bovine Testes	EnzymoPure™, ≥400 u/mg
H766309	Hyaluronidase（specificity for hyaluronate sodium）	EnzymoPure™, ≥2000UN/mg，from Streptomyces hyalurolyticus
H1492277	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
P123425	Papain	EnzymoPure™, lyophilized powder,≥10 units/mg，with BAEE as substrate
P426757	Papain	EnzymoPure™, 10mM in DMSO
P164463	Papain	EnzymoPure™, ≥2000units/mg，with casein as substrate
P754923	Papain from Carica papaya	solution, light brown,≥10 U/mg protein (~25 mg/ml)
P128675	Papain from Carica papaya Latex(Lyophilized)	EnzymoPure™, ≥15 units/mg protein，with BAEE as substrate
P128674	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.

Aladdin: https://www.aladdinsci.com/