US20030017212A1 - Process for the identification and isolation of insulin producing beta cell differentiating factor from the perivitalline fluid of the fertilised eggs of horseshoe crab - Google Patents

Process for the identification and isolation of insulin producing beta cell differentiating factor from the perivitalline fluid of the fertilised eggs of horseshoe crab Download PDF

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Publication number
US20030017212A1
US20030017212A1 US10/112,079 US11207902A US2003017212A1 US 20030017212 A1 US20030017212 A1 US 20030017212A1 US 11207902 A US11207902 A US 11207902A US 2003017212 A1 US2003017212 A1 US 2003017212A1
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fluid
cells
vitalline
peri
horseshoe crab
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US10/112,079
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Pradeep Parab
Anil Chatterji
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Council of Scientific and Industrial Research CSIR
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Council of Scientific and Industrial Research CSIR
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Priority to US10/112,079 priority Critical patent/US20030017212A1/en
Publication of US20030017212A1 publication Critical patent/US20030017212A1/en
Priority to US10/807,682 priority patent/US7087429B2/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/43504—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates
    • C07K14/43509—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates from crustaceans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/56—Materials from animals other than mammals
    • A61K35/63—Arthropods

Definitions

  • This invention relates to the identification and characterization of cell proliferating factor in the peri-vitalline fluid of the fertilized eggs of the Indian horseshoe crab.
  • pancreatic ⁇ -cells have become an important factor for the purpose in curing Diabetes mellitus
  • the concept that ⁇ -cell mass is static has changed and now we know that ⁇ -cells are dynamic and to certain extent can compensate for the loss and retain their ability to respond to changes in blood glucose by their ability to maintain glucose homeostasis.
  • These studies are based on the experimental animal models.
  • In continuation with the same efforts have been made to search for the factors that lead to direct differentiation of ⁇ -cells from precursor cells and those responsible for proliferation of existing ⁇ -cells in the residual ⁇ -cell mass in the diabetic individual.
  • the aims of these efforts are to find out novel molecules to control and cure of diabetes by natal products.
  • Rat AR42J is derived from a chemically induced pancreatic tumor having exocrine origin and has the feature of pluri-potency of the common precursor cell of the pancreas. It has been reported that amylase secreting AR42J cells convert themselves into insulin secreting cells in the presence of hepatocyte growth factor and or in the presence of betacellulin and activin A.
  • rat AR42J cells were derived fiom a chemically induced pancreatic tumor having exocrine origin and have the feature of pluri-potency of the common precursor cell of the pancreas (Mashima H, Ohnishi H, Wakabayashi K, Mine T., Miyagawa J, Hanahusa Ta, Seno M, Yamada H, Kojima I, Betacellulin and activin A coordinately convert amyase-secreting pancreatic AR42J cells into insulin-secreting cells, J Clin Invest 97:1647-1654, 1996; Mashima H, Yamada S, Tajima T., Seno M, Yamada H, Takeda J and Kojima I. Genes Expressed During the Differentiating of Pancreatic AR42J cells into insulin—secreting cells, Diabetes, 48, p 304-309, 1999).
  • the main object of the invention to identify and isolate insulin producing beta cell differentiating factor from the perivitalline fluid of the fertilised eggs of Horseshoe crab.
  • pancreatic AR42J cells into insulin producing cells.
  • the present invention provides a process for identification of insulin producing ⁇ -cells proliferating factor from the peri-vitalline fluid of fertilized eggs of horseshoe crab that facilitates the proliferation of AR42J cells from rat origin.
  • the process comprises collecting peri-vitalline fluid from the fertilized eggs of the Indian horseshoe crab.
  • the peri-vitalline fluid is collected asceptically, aliquated and stored at ⁇ 20° C.
  • the AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md., U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FCS.
  • the cells were maintained in NUNC six-well dishes (NUNCLON, Denmark).
  • a sub culture was done every 4 th day of seeding of 1 ⁇ 10 5 cells and the cultures were incubated at 37° C.
  • concentration dependent proliferation was observed in presence of peri-vitalline fluid.
  • the aforesaid process requires absolute precaution for bacterial and fungal contamination at all above processing steps. All apparatus and reagents must therefore, be pyrogen free.
  • the novelty of the present invention is in identification of a new growth promoting activity from the peri-vitalline fluid collected from the fertilized eggs of the horseshoe crab that facilitates the proliferation of AR42J cells of rat origin.
  • AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md., U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FOS. The cells were maintained in NUNC six-well dishes (NUNCLON, Denmark). Sub culture was done every fourth day of seeding of 1 ⁇ 10 5 cells and the cultures were incubated at 37° C. in 5% CO 2 atmosphere. AR42J cells were grown in presence of perivitalline fluid and 3H-thymidine for 72 hours at 37° C. Concentration dependent proliferation was observed (Table 1). Studies were being carried out to see mRNA expression of insulin in AR42J in presence of perivitalline fluid.
  • Fertilized eggs of the horseshoe crab were collected from the nests located on the sandy beach at Balramgari (Orissa). The fertilized eggs were transferred in filtered seawater and incubated at a constant in artificial incubators. As soon as the eggs became transparent, showing the movement of trilobite larvae, the peri-vitalline fluid was collected asceptically, aliquated and stored at ⁇ 20° C.
  • AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md., U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FCS. These cells were maintained in NUNC six-well dishes (NUNCLON, Denmark). Sub culture was done every 4 th day of seeding of 1 ⁇ 10 5 cells and the cultures were incubated at 37° C. in 5% Co 2 atmosphere. AR42J cells were grown in presence of peri-vitalline fluid and proliferative activity of peri-vitalline fluid was observed which was found to be concentration dependent (Table 1). Peri-vitalline fluid showed significant proliferation of AR42J cell lines which is reported for the first time.
  • Percent increase in cell population in presence of peri-vitalline fluid Per-vitalline ( ⁇ g/ml) 3H-counts/min % increase 0.0 1678 — 1.0 2377 041 2.5 3115 085 5.0 8662 416 10.0 13083 680

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Medicinal Chemistry (AREA)
  • Biochemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Biophysics (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Genetics & Genomics (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Molecular Biology (AREA)
  • Toxicology (AREA)
  • Zoology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

This invention relates to the identification and characterization of cell proliferating factor in the peri-vatalline fluid of the fertilized eggs of the Indian horseshoe crab.

Description

    FIELD OF THE INVENTION
  • This invention relates to the identification and characterization of cell proliferating factor in the peri-vitalline fluid of the fertilized eggs of the Indian horseshoe crab. [0001]
    • BACKGROUND OF THE INVENTION
  • The regeneration of pancreatic β-cells has become an important factor for the purpose in curing [0002] Diabetes mellitus The concept that β-cell mass is static has changed and now we know that β-cells are dynamic and to certain extent can compensate for the loss and retain their ability to respond to changes in blood glucose by their ability to maintain glucose homeostasis. These studies are based on the experimental animal models. In continuation with the same efforts have been made to search for the factors that lead to direct differentiation of β-cells from precursor cells and those responsible for proliferation of existing β-cells in the residual β-cell mass in the diabetic individual. The aims of these efforts are to find out novel molecules to control and cure of diabetes by natal products.
  • Rat AR42J is derived from a chemically induced pancreatic tumor having exocrine origin and has the feature of pluri-potency of the common precursor cell of the pancreas. It has been reported that amylase secreting AR42J cells convert themselves into insulin secreting cells in the presence of hepatocyte growth factor and or in the presence of betacellulin and activin A. Reference may be made to a publication wherein rat AR42J cells were derived fiom a chemically induced pancreatic tumor having exocrine origin and have the feature of pluri-potency of the common precursor cell of the pancreas (Mashima H, Ohnishi H, Wakabayashi K, Mine T., Miyagawa J, Hanahusa Ta, Seno M, Yamada H, Kojima I, Betacellulin and activin A coordinately convert amyase-secreting pancreatic AR42J cells into insulin-secreting cells, [0003] J Clin Invest 97:1647-1654, 1996; Mashima H, Yamada S, Tajima T., Seno M, Yamada H, Takeda J and Kojima I. Genes Expressed During the Differentiating of Pancreatic AR42J cells into insulin—secreting cells, Diabetes, 48, p 304-309, 1999).
    • OBJECT OF THE INVENTION
  • The main object of the invention to identify and isolate insulin producing beta cell differentiating factor from the perivitalline fluid of the fertilised eggs of Horseshoe crab. [0004]
  • It is a further object of the invention to achieve the differentiation pancreatic AR42J cells into insulin producing cells. [0005]
  • It is another object of the present invention to provide a new process for isolation of new growth promoting activity from the peri-vitalline fluid collected from the fertilized eggs of the horseshoe crab that facilitates the proliferation of AR42J cells. [0006]
  • It is a further object of the invention to achieve the fractionation of potential putative differentiating factor from perivitalline fluid of a Horseshoe crab. [0007]
    • SUMMARY OF THE INVENTION
  • Accordingly, the present invention provides a process for identification of insulin producing β-cells proliferating factor from the peri-vitalline fluid of fertilized eggs of horseshoe crab that facilitates the proliferation of AR42J cells from rat origin. [0008]
  • In one embodiment of the invention, the process comprises collecting peri-vitalline fluid from the fertilized eggs of the Indian horseshoe crab. [0009]
  • In another embodiment of the invention, the peri-vitalline fluid is collected asceptically, aliquated and stored at −20° C. [0010]
  • In a further embodiment of the invention, the AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md., U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FCS. [0011]
  • In a further embodiment of the invention, the cells were maintained in NUNC six-well dishes (NUNCLON, Denmark). [0012]
  • In another embodiment of the invention, a sub culture was done every 4[0013] th day of seeding of 1×105 cells and the cultures were incubated at 37° C.
  • In yet another embodiment of the invention, concentration dependent proliferation was observed in presence of peri-vitalline fluid. [0014]
    • DETAILED DESCRIPTION OF THE INVENTION
  • In preliminary studies it was observed that peri-vitalline fluid collected from the fertilized eggs of the horseshoe crab has proliferative and differentiating activity in AR42J cell line of rat pancreas. [0015]
  • The aforesaid process requires absolute precaution for bacterial and fungal contamination at all above processing steps. All apparatus and reagents must therefore, be pyrogen free. The novelty of the present invention is in identification of a new growth promoting activity from the peri-vitalline fluid collected from the fertilized eggs of the horseshoe crab that facilitates the proliferation of AR42J cells of rat origin. [0016]
    • METHODOLOGY
  • 1. Collection of Per-vitalline Fluid from the Fertilized Eggs of the Horseshoe Crab: [0017]
  • Fertilized eggs of the horseshoe crab were collected from the nests located on the sandy beach at Balramgari (Orissa). The fertilized eggs were transferred in filtered seawater and incubated at a constant in artificial incubators. As soon as the eggs became transparent, showing the movement of trilobite larvae, the perivitalline fluid was collected aseptically, aliquated and stored at −20° C. [0018]
  • 2. Cell Culture: [0019]
  • AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md., U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FOS. The cells were maintained in NUNC six-well dishes (NUNCLON, Denmark). Sub culture was done every fourth day of seeding of 1×10[0020] 5 cells and the cultures were incubated at 37° C. in 5% CO2 atmosphere. AR42J cells were grown in presence of perivitalline fluid and 3H-thymidine for 72 hours at 37° C. Concentration dependent proliferation was observed (Table 1). Studies were being carried out to see mRNA expression of insulin in AR42J in presence of perivitalline fluid.
    •  EXAMPLE
  • Fertilized eggs of the horseshoe crab were collected from the nests located on the sandy beach at Balramgari (Orissa). The fertilized eggs were transferred in filtered seawater and incubated at a constant in artificial incubators. As soon as the eggs became transparent, showing the movement of trilobite larvae, the peri-vitalline fluid was collected asceptically, aliquated and stored at −20° C. [0021]
  • AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md., U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FCS. These cells were maintained in NUNC six-well dishes (NUNCLON, Denmark). Sub culture was done every 4[0022] th day of seeding of 1×105 cells and the cultures were incubated at 37° C. in 5% Co2 atmosphere. AR42J cells were grown in presence of peri-vitalline fluid and proliferative activity of peri-vitalline fluid was observed which was found to be concentration dependent (Table 1). Peri-vitalline fluid showed significant proliferation of AR42J cell lines which is reported for the first time.
    TABLE 1
    Percent increase in cell population in presence of peri-vitalline fluid.
    Per-vitalline (μg/ml) 3H-counts/min % increase
    0.0 1678 —
    1.0 2377 041
    2.5 3115 085
    5.0 8662 416
    10.0 13083 680
  • Advantage: Identification of the new growth factor will be useful for cell proliferation. [0023]

Claims (7)

We claim
1. A process for identification of insulin producing β-cells proliferating factor from the peri-vitalline fluid of fertilized eggs of horseshoe crab that facilitates the proliferation of AR42J cells from rat origin.
2. A process as claimed in claim 1 wherein the process comprises collecting peri-vitalline fluid from the fertilized eggs of the Indian horseshoe crab
3. A process as claimed in claim 1 wherein the peri-vitalline fluid is collected aseptically, aliquated and stored at −20° C.
4. A process as claimed in claim 1 wherein the AR42J cell line (rat ascinar cells) obtained from American Type Culture Collection (Rockville Md, U.S.A.) was grown in Dulbeco's modified minimum essential medium supplemented with 10% FCS.
5. A process as claimed in claim 1 wherein the cells were maintained in NUNC six-well dishes (NUNCLON, Denmark).
6. A process as claimed in claim 1 wherein the a sub culture is done every 4th day of seeding of 1×105 cells and the cultures were incubated at 37° C.
7. A process as claimed in claim 1 wherein the concentration dependent proliferation was observed in presence of peri-vitalline fluid.
US10/112,079 2001-03-30 2002-03-29 Process for the identification and isolation of insulin producing beta cell differentiating factor from the perivitalline fluid of the fertilised eggs of horseshoe crab Abandoned US20030017212A1 (en)

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US10/112,079 US20030017212A1 (en) 2001-03-30 2002-03-29 Process for the identification and isolation of insulin producing beta cell differentiating factor from the perivitalline fluid of the fertilised eggs of horseshoe crab
US10/807,682 US7087429B2 (en) 2001-03-30 2004-03-24 Process for proliferation and differentiation of rat ascinar cells

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005069941A2 (en) * 2004-01-20 2005-08-04 University Of Delaware An artificial bait based on a peptide attractant found in horseshoe crab eggs
US20060141055A1 (en) * 2004-12-23 2006-06-29 Council Of Scientific & Industrial Research Cardiac development promoting activity of perivitelline fluid of embryos of Indian horseshoe crab, Tachypleus gigas (Muller)
WO2006070390A1 (en) * 2004-12-28 2006-07-06 Council Of Scientific And Industrial Research Cardiac development promoting activity of perivitelline fluid of embryos of indian horseshoe crab, tachypleus gigas (müller)
CN110898080A (en) * 2019-11-01 2020-03-24 广西中医药大学 Application of horseshoe crab plasma in promoting growth and development

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772066A1 (en) * 2004-04-14 2007-04-11 Keio University Health food, process for producing the same and dried matter or extract

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005069941A2 (en) * 2004-01-20 2005-08-04 University Of Delaware An artificial bait based on a peptide attractant found in horseshoe crab eggs
WO2005069941A3 (en) * 2004-01-20 2007-05-18 Univ Delaware An artificial bait based on a peptide attractant found in horseshoe crab eggs
US20060141055A1 (en) * 2004-12-23 2006-06-29 Council Of Scientific & Industrial Research Cardiac development promoting activity of perivitelline fluid of embryos of Indian horseshoe crab, Tachypleus gigas (Muller)
WO2006070390A1 (en) * 2004-12-28 2006-07-06 Council Of Scientific And Industrial Research Cardiac development promoting activity of perivitelline fluid of embryos of indian horseshoe crab, tachypleus gigas (müller)
CN110898080A (en) * 2019-11-01 2020-03-24 广西中医药大学 Application of horseshoe crab plasma in promoting growth and development

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US7087429B2 (en) 2006-08-08

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