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H4272

Sigma-Aldrich

Hyaluronidase from bovine testes

Type IV-S, powder, suitable for mouse embryo cell culture, 750-3000 units/mg solid

Synonym(s):

Hyaluronate 4-glycanohydrolase, Hyaluronoglucosaminidase

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About This Item

CAS Number:
37326-33-3
Enzyme Commission number:
3.2.1.35 (BRENDA, IUBMB)
EC Number:
253-464-3
MDL number:
MFCD00131351
UNSPSC Code:
12352204
NACRES:
NA.75
Pricing and availability is not currently available.

sterility

aseptically processed

Quality Level

200

type

Type IV-S

form

powder

specific activity

750-3000 units/mg solid

mol wt

~55 kDa (four subunits of 14 kDa each)

composition

Protein, 80-105% biuret

technique(s)

cell culture | embryo: suitable

storage temp.

−20°C

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Application

Hyaluronidase is an enzyme derived from bovine testes. It is used to remove the cumulus mass in the isolation of mouse embryos or from newly ovulated eggs, when preparing the eggs for in vitro culture.

Gonadotropins are used to superovulate 20 female mice. The mice are then mated and preimplantation stage embryos are retrieved and counted. The embryos are treated with hyaluronidase until the cumulus mass is dissociated from the embryos. The embryos are cultured, viewed daily and progress of the embryos is recorded.

Biochem/physiol Actions

Hyaluronidase degrades hyaluronan and has been found to be inappropriately regulated during cancer progression.
These enzymes randomly cleave β-N-acetylhexosamine-[1→4] glycosidic bonds in hyaluronic acid, chondroitin, and chondroitin sulfates.

Unit Definition

One unit will degrade 0.75 μg of the polysaccharide hyaluronic acid per minute at pH 5.35 at 37 ºC (as measured by turbidimetric absorbance (λ: 600nm) when complexed with BSA after 45 minutes).

Preparation Note

Reconstitute 1 vial of hyaluronidase with 3 ml of M2 Medium (Product Nos. M 7167 or M 5910) or deionized water to obtain a 10 mg/ml stock solution. Dilute stock solution with M2 Medium to obtain a final working concentration of approximately 300 μg/ml.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H334

Precautionary Statements

P261 - P284 - P501

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000408861
0000406765
0000376386
0000253960
0000325944

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Liesl Jacobs et al.
Molecular therapy : the journal of the American Society of Gene Therapy, 28(4), 1068-1077 (2020-02-27)
Checkpoint-inhibiting antibodies elicit impressive clinical responses, but still face several issues. The current study evaluated whether DNA-based delivery can broaden the application of checkpoint inhibitors, specifically by pursuing cost-efficient in vivo production, facilitating combination therapies, and exploring administration routes that lower
Giles Vermeire et al.
Cancer gene therapy, 28(7-8), 828-838 (2020-08-01)
Nanobodies present an appealing class of potential cancer therapeutics. The current study explores the in vivo expression of these molecules through DNA-encoded delivery. We hypothesized that this approach could address the rapid clearance of Nanobodies and, through half-life modulation, increase
Marco Ragusa et al.
RNA biology, 16(9), 1237-1248 (2019-05-29)
Circular RNAs (circRNAs) have a critical role in the control of gene expression. Their function in spermatozoa (SPZ) is unknown to date. Twenty-eight genes, involved in SPZ/testicular and epididymal physiology, were given in circBase database to find which of them
Wan Kin Au Yeung et al.
Cell reports, 27(1), 282-293 (2019-04-04)
Mammalian histone methyltransferase G9a (also called EHMT2) deposits H3K9me2 on chromatin and is essential for postimplantation development. However, its role in oogenesis and preimplantation development remains poorly understood. We show that H3K9me2-enriched chromatin domains in mouse oocytes are generally depleted
Claudia Gerri et al.
Nature, 587(7834), 443-447 (2020-09-25)
Current understandings of cell specification in early mammalian pre-implantation development are based mainly on mouse studies. The first lineage differentiation event occurs at the morula stage, with outer cells initiating a trophectoderm (TE) placental progenitor program. The inner cell mass
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Articles

Embryo Culture Media

Mouse embryo media and embryo validated reagents for transgenic mouse embryo culture

Protocols

Enzymatic Assay of Hyaluronidase (3.2.1.35)

To measure hyaluronidase activity, a turbidimetric determination assay is used at 600 nm. One unit of hyaluronidase activity will cause a change in absorbance of 0.330 per minute at pH 5.35 at 37 °C.

Enzymatic Assay of Hyaluronidase (3.2.1.35)

To measure hyaluronidase activity, a turbidimetric determination assay is used at 600 nm. One unit of hyaluronidase activity will cause a change in absorbance of 0.330 per minute at pH 5.35 at 37 °C.

Enzymatic Assay of Hyaluronidase (3.2.1.35)

To measure hyaluronidase activity, a turbidimetric determination assay is used at 600 nm. One unit of hyaluronidase activity will cause a change in absorbance of 0.330 per minute at pH 5.35 at 37 °C.

Enzymatic Assay of Hyaluronidase (3.2.1.35)

To measure hyaluronidase activity, a turbidimetric determination assay is used at 600 nm. One unit of hyaluronidase activity will cause a change in absorbance of 0.330 per minute at pH 5.35 at 37 °C.

Questions

  1. What's the conversion between Sigma Unit and International Unit for this enzyme ?

    1 answer

    1. The International Unit, as described by WHO, (1957-01-01), J H Humphrey, is based on, and compared to, the activity of 0.1 mg of the International Standard Preparation'. The value is reported as Turbidity Reducing Units. This product is not tested against an international standard. The activity is measured by the change in absorbance values over time in the presence of hyaluronic acid. See the links below for additional information.

      International Standard for Hyaluronidase reference:
      https://www.sigmaaldrich.com/tech-docs/paper/1257671

      Enzymatic Assay Method applied to this product:
      https://www.sigmaaldrich.com/technical-documents/protocol/protein-biology/enzyme-activity-assays/enzymatic-assay-of-hyaluronidase

      Product Datasheet for H3883, the source product for H4272 - note the Procedure for synovial fluid clarification, page 1:
      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/739/183/h3884pis-ms.pdf

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