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Acanthamoeba polyphaga (Puschkarew) Page
Acanthamoeba polyphaga (Puschkarew) Page
規(guī)格:
貨期:
編號(hào):B211002
品牌:Mingzhoubio

標(biāo)準(zhǔn)菌株
定量菌液
DNA
RNA

規(guī)格:
凍干粉
斜面
甘油
平板


產(chǎn)品名稱 Acanthamoeba polyphaga (Puschkarew) Page
商品貨號(hào) B211002
Deposited As Acanthamoeba culbertsoni Singh and Das
Strain Designations HN-3
Application
characterization of Acanthamoeba polyphaga
Biosafety Level 2

Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.

Isolation
human nasal swab, Indianapolis, IN, 1965
Product Format frozen
Type Strain no
Comments
Endosymbiont-bearing. Avirulent.
characterization of Acanthamoeba polyphaga
mitochondrial DNA fingerprinting
phylogeny
Medium ATCC® Medium 712: PYG w/ Additives
Growth Conditions
Temperature: 25.0°C
Growth Conditions: Axenic
Protocol: This strain is distributed as a frozen preparation. See the general procedures for thawing a frozen vial. Once vial is thawed, aseptically transfer the entire contents to a 16 X 125 mm screw-capped test tube or a T-25 tissue culture flask containing 5.0 ml of ATCC medium 712. Incubate horizontally at 25C.
Cryopreservation

1.?? To achieve the best results set up cultures with several different inocula (e.g. 0.25 ml, 0.5 ml, 1.0 ml).? Harvest cultures and pool when the culture that received the lowest inoculum is at or near peak density.

2.? If the cell concentration exceeds the required level do not centrifuge, but adjust the concentration to between 2 x 106 and 2 x 107cysts/ml with fresh medium.? If the concentration is too low, centrifuge at 600 x g for 5 min and resuspend the pellet in the volume of fresh medium required to yield the desired concentration.

3.? While cells are centrifuging prepare a 15% (v/v) solution of sterile DMSO as follows:? Add the required volume of DMSO to a glass screw-capped test tube and place it in an ice bath.? Allow the DMSO to solidify.? Add the required volume of refrigerated medium.? Dissolve the DMSO by inverting the tube several times.?

????? *NOTE: If the DMSO solution is not prepared on ice, an exothermic reaction will occur that may precipitate certain components of the medium.

4.? Mix the cell preparation and the DMSO in equal portions. Thus, the final concentration will be between 106 and 107 cells/ml and 7.5% (v/v) DMSO. The time from the mixing of the cell preparation and DMSO stock solution before the freezing process is begun should be no less than 15 min and no longer than 30 min.

5.?? Dispense in 0.5 ml aliquots into 1.0 - 2.0 ml sterile plastic screw-capped cryules (special plastic vials for cryopreservation).

6.?? Place the vials in a controlled rate freezing unit.? From room temperature cool at -1°C/min to -40°C.? If the freezing unit can compensate for the heat of fusion, maintain rate at??????? -1°C/min through the heat of fusion.? At -40°C plunge into liquid nitrogen. Alternatively, place the vials in a Nalgene 1°C freezing apparatus.? Place the apparatus at -80°C for 1.5 to 2 hours and then plunge ampules into liquid nitrogen.? (The cooling rate in this apparatus is approximately

????? -1°C/min.) ?

7. The frozen preparations are stored in either the vapor or liquid phase of a nitrogen freezer.

8.?? To establish a culture from the frozen state place an ampule in a water bath set at 35°C (2-3 min). Immerse the vial just sufficient to cover the frozen material. Do not agitate the vial.

9.?? Immediately after thawing, aseptically remove the contents of the ampule and inoculate into 5 ml of fresh ATCC medium 712 in a T-25 tissue culture flask or plastic 16 x 125 mm screw-capped test tube.? Incubate at 25°C.

Name of Depositor CG Culbertson
Year of Origin 1965
References

Hall J, Voelz H. Bacterial endosymbionts of Acanthamoeba sp.. J. Parasitol. 71: 89-95, 1985. PubMed: 3981353

Culbertson CG, et al. Hartmannella (Acanthamoeba). Experimental chronic, granulomatous brain infections produced by new isolates of low virulence. Am. J. Clin. Pathol. 46: 305-314, 1966. PubMed: 5921408

Gautom RK, et al. Mitochondrial DNA fingerprinting of Acanthamoeba spp. isolated from clinical and environmental sources. J. Clin. Microbiol. 32: 1070-1073, 1994. PubMed: 7913095

Daggett PM, et al. A molecular approach to the phylogeny of Acanthamoeba. Biosystems 18: 399-405, 1985. PubMed: 4084681

Fritsche TR, et al. Occurrence of bacterial endosymbionts in Acanthamoeba spp. isolated from corneal and environmental specimens and contact lenses. J. Clin. Microbiol. 31: 1122-1126, 1993. PubMed: 8501212

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