Methods of reducing the production of reactive oxygen species and methods of screening or identifying compounds and compositions that reduce the production of reactive oxygen species

• US 20070077310A1
• Filed: 10/03/2006
• Published: 04/05/2007
• Est. Priority Date: 10/03/2005
• Status: Abandoned Application

• Current Assignee: University of Tennessee Research Foundation (University of Teesside)
• Original Assignee: University of Tennessee Research Foundation (University of Teesside)
• Inventors: Sun, Xiaocun, Zemel, Michael
• Application Number:
  US11/542,703
• Publication Number:
  US 20070077310A1
• Time in Patent Office: Days
• US Class Current: 424/602
• CPC Class Codes: A61K 2300/00 Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
• CPC Class Codes: A61K 31/355 Tocopherols, e.g. vitamin E
• CPC Class Codes: A61K 33/06 Aluminium, calcium or magnesium; Compounds thereof , e.g. clay
• CPC Class Codes: A61K 45/06 Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• CPC Class Codes: A61P 3/04 Anorexiants; Antiobesity agents
• CPC Class Codes: A61P 39/00 General protective or antinoxious agents
• CPC Class Codes: G01N 2800/044 Hyperlipemia or hypolipemia, e.g. dyslipidaemia, obesity
• CPC Class Codes: G01N 33/502 for testing non-proliferative effects
• CPC Class Codes: G01N 33/5023 on expression patterns
• CPC Class Codes: G01N 33/5044 involving specific cell types
• CPC Class Codes: G01N 33/5088 of vertebrates
• CPC Class Codes: G01N 33/6872 Intracellular protein regulatory factors and their receptors, e.g. including ion channels
• CPC Class Codes: G01N 33/6893 related to diseases not provided for elsewhere
• CPC Class Codes: G01N 33/84 involving inorganic compounds or pH

Abstract

The subject application provides methods of identifying compounds, combinations of compounds, compositions, and/or combinations of compositions that are suitable for reducing the production of reactive oxygen species (ROS) in an individual with the proviso that said compound, combination of compounds, composition, or combination of compositions is not a dietary material containing calcium or dietary calcium. Also provided in the subject application are methods of treating diseases or disorders associated with ROS production and methods of reducing ROS production in an individual with the proviso that said compound, combination of compounds, composition, or combination of compositions is not a dietary material containing calcium or dietary calcium.

Claims

1. An in vitro method of screening compounds or compositions suitable for reducing the production of reactive oxygen species (ROS) comprising:

a) contacting one or more cell(s) with a candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions with the proviso that said candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions is not dietary material containing calcium or dietary calcium; and

b) measuring one or more of the following parameters;

i) intracellular concentrations of calcium in said one or more cell(s), wherein a decrease of intracellular calcium concentration in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

ii) UCP2 expression in said one or more cell(s), wherein an increase in UCP2 expression in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

iii) NADPH oxidase expression in said one or more cell(s), wherein a decrease in NADPH oxidase expression in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

iv) UCP3 expression in said one or more cell(s), wherein an increase in UCP3 expression in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

v) NADPH oxidase expression in said one or more cell(s), wherein a decrease in NADPH oxidase expression in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

vi) 11β

-HSD expression in said one or more cell(s), wherein a decrease in the expression of 11β

-HSD in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

vii) TNF-α

, CD14, MIF, M-CSF, MIP, MCP-1, G-CSF or IL-6 expression in said one or more cell(s), wherein a decrease in the expression of TNF-α

, CD14, MIF (macrophage inhibitory factor), MIP (macrophage inhibitory protein), M-CSF (macrophage colony stimulating factor), MCP-1 (monocyte chemoattractant protein-1), G-CSF (granulocyte colony stimulating factor) or IL-6 in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

or

viii) IL-15 or adiponectin expression in said one or more cell(s), wherein an increase in the expression of IL-15 or adiponectin in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS.

2. The method according to claim 1, wherein said one or more cell(s) is a adipocyte or an adipocyte cell line.

3. The method according to claim 2, wherein said adipocyte or adipocyte cell line is human(s) or a murine.

4. A method of identifying or screening compounds or compositions suitable for reducing the production of reactive oxygen species (ROS) comprising:

a) administering a candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions to at least one test subject with the proviso that said candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions, when administered orally to said test subject, is not being administered to said at least one test subject orally as a component of the diet of said at least one test subject or as dietary calcium to said test subject; and

b) measuring one or more of the following parameters;

i) intracellular calcium concentrations in cells of said at least one test subject and at least one control subject, wherein a decrease of intracellular calcium concentration in the cells of a test subject as compared to the intracellular concentrations of calcium in the cells of at least one control subject is indicative of a compound, composition, combination of compounds or combination of compositions suitable for use in reducing the production of ROS in a subject;

ii) UCP2 expression in cells of said at least one test subject and at least one control subject, wherein an increase of UCP2 expression in the cells of a test subject as compared to the UCP2 expression in the cells of at least one control subject is indicative of a compound, composition, combination of compounds or combination of compositions suitable for use in reducing the production of ROS in a subject;

iii) NADPH oxidase expression in cells of said at least one test subject and at least one control subject, wherein a decrease of NADPH oxidase expression in the cells of a test subject as compared to the NADPH oxidase expression in the cells of at least one control subject is indicative of a compound, composition, combination of compounds or combination of compositions suitable for use in reducing the production of ROS in a subject;

iv) UCP3 expression in skeletal muscle cells of said at least one test subject and at least one control subject, wherein an increase in UCP3 expression in the skeletal muscle cells of a test subject as compared to UCP3 expression in the skeletal muscle cells of at least one control subject is indicative of a compound, composition, combination of compounds or combination of compositions suitable for use in reducing the production of ROS in a subject;

v) NADPH oxidase expression in skeletal muscle cells of said at least one test subject and at least one control subject, wherein a decrease of NADPH oxidase expression in the skeletal muscle cells of a test subject as compared to the NADPH oxidase expression in the skeletal muscle cells of at least one control subject is indicative of a compound, composition, combination of compounds or combination of compositions suitable for use in reducing the production of ROS in a subject;

vi) 11β

-HSD expression in visceral adipocyte tissue or cells of said at least one test subject and at least one control subject, wherein a decrease of 11β

-HSD expression in the visceral adipocyte tissue or cells of a test subject as compared to the 11β

-HSD expression in the visceral adipocyte tissue or cells of at least one control subject is indicative of a compound, composition, combination of compounds or combination of compositions suitable for use in reducing the production of ROS in a subject;

vii) TNF-α

, CD14, MIF, MIP, M-CSF, MCP-1, G-CSF or IL-6 expression in said one or more cell(s), wherein a decrease in the expression of TNF-α

, CD14, MIF, MIP, M-CSF, MCP-1, G-CSF or IL-6 in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS;

or

viii) IL-15 or adiponectin expression in said one or more cell(s), wherein an increase in the expression of IL-15 or adiponectin in said cell(s) is indicative of a compound or composition suitable for use in reducing the production of ROS.

6. The method according to claim 4, wherein a candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions is administered to a subject via intravenous, intraarterial, buccal, topical, transdermal, rectal, intramuscular, subcutaneous, intraosseous, transmucosal, or intraperitoneal routes of administration.

7. The method according to claim 5, wherein said candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions is administered to at least one test subject orally with the proviso that said candidate compound, combination of candidate compounds, candidate composition, or combination of candidate compositions is not being administered to said at least one test subject orally as a component of the diet of said at least one test subject or as dietary calcium to said test subject.

8. A method of treating diseases associated with reactive oxygen species (ROS) comprising the administration of a compound, composition, combination of compounds, or combination of compositions that increase intracellular calcium levels to an individual in need of such treatment in amounts sufficient to increase the intracellular concentrations of calcium in the cells of the individual with the proviso that said compound, combination of compounds, composition, or combination of compositions is not a dietary material containing calcium or dietary calcium.

9. The method according to claim 8, further comprising the step of diagnosing or identifying an individual as having a disease or disorder associated with ROS or diagnosing or identifying an individual having elevated ROS levels comprising measuring the levels of ROS and comparing the measured levels against a standard or collection of ROS levels from control subjects.

10. The method according to claim 8, wherein the ROS-associated disease or disorder is cataracts, diabetes, Alzheimer'"'"'s disease, heart disease, cancer, male infertility, inflammation, amyotrophic lateral sclerosis, Parkinson'"'"'s disease, multiple sclerosis or aging.

11. The method according to claim 9, wherein the ROS-associated disease or disorder is cataracts, diabetes, Alzheimer'"'"'s disease, heart disease, cancer, male infertility, inflammation, amyotrophic lateral sclerosis, Parkinson'"'"'s disease, multiple sclerosis or aging.

12. The method according to claim 8, wherein said ROS-associated disease or disorder is cancer-associated ROS disease or disorders and said method comprises the administration of one or more composition comprising calcium, or physiologically acceptable salts of calcium, and a therapeutic agent selected from alkylating agents, antibiotics which affect nucleic acids, platinum compounds, mitotic inhibitors, antimetabolites, camptothecin derivatives, biological response modifiers, hormone therapies or any of the therapeutic agents is identified in Table 1.

13. The method according to claim 12, wherein the therapeutic agent or therapeutic agents and calcium, or physiologically acceptable salts of calcium, are administered as a single composition.

14. The method according to claim 12, wherein the therapeutic agent or therapeutic agents and calcium, or physiologically acceptable salts of calcium, are administered as separate or different compositions.

15. The method according to claim 14, wherein the separate or different compositions are administered simultaneously, sequentially or contemporaneously.

16. A method of reducing ROS production in a diabetic individual comprising the administration of one or more composition comprising one or more therapeutic agent as set forth in Table 2 or Table 3 and calcium, or physiologically acceptable salts of calcium, in an amount sufficient to reduce the production of ROS in said individual.

17. A method of altering the expression of cytokines in an individual or the cytokine profile of an individual comprising the administration of a compound, composition, combination of compounds, or combination of compositions that decrease intracellular calcium levels to an individual in need of such treatment in amounts sufficient to decrease intracellular levels of calcium in the cells of the individual, decrease TNF-α

, CD14, MIP, MIF, M-CSF, G-CSF or IL-6 expression, or any combination thereof, in the individual, and increase the expression of IL-15, adiponectin, or both IL-15 or adiponectin in the individual with the proviso that said compound, combination of compounds, composition, or combination of compositions is not a dietary material containing calcium or dietary calcium.

18. A composition comprising one or more therapeutic agent selected from Tables 1 or 2 or 3 in combination with calcium or one or more physiological salts of calcium.

19. The composition according to claim 18, wherein said composition contains between:

1 and 2000 mg;

900 and 1500 mg;

1000 and 1400 mg;

1200 and 1300 mg;

1100 and 1300 mg;

or 1200 and 1300 mg of calcium or one or more physiologically acceptable salts thereof.

20. The composition according to claim 18, wherein said one or more physiological salts of calcium are selected from calcium phosphates, calcium carbonate, calcium chloride, calcium sulfate, calcium tartrate, calcium magnesium carbonate, calcium metasilicate, calcium malate, secondary calcium orthophosphate, calcium citrate, or calcium hydroxide.

21. A method of increasing the in vitro expression of MIF, M-CSF, MIP, IL-6, IL-10, IL-4, IL-13, MIG, IL-5, VEGF, CD14, G-CSF, TNF-α

, RANTES, or MIP-1α

comprising contacting a composition comprising a carrier and calcitriol (1, 25-(OH)₂-D₃) with a adipocytes, skeletal muscle cells, skeletal muscle cell lines, human adipocyte cell lines, murine adipocyte cell lines or transformed host cells comprising MIF, M-CSF, MIP, IL-6, IL-10, IL-4, IL-13, MIG, IL-5, VEGF, CD14, G-CSF, TNF-α

, RANTES, or MIP-1α

genes and culturing said cells under conditions that allow for the production of MIF, M-CSF, MIP, IL-6, IL-10, IL-4, IL-13, MIG, IL-5, VEGF, CD14, G-CSF, TNF-α

, RANTES, or MIP-1α

.

22. The method according to claim 21, further comprising the recovery of MIF, M-CSF, MIP, IL-6, IL-10, IL-4, IL-13, MIG, IL-5, VEGF, CD14, G-CSF, TNF-α

, RANTES, or MIP-1α

.

23. A method of increasing fatty acid oxidation in muscle cells or decreasing the expression of fatty acid synthase in adipocytes comprising the administration of a composition comprising leucine to a subject in an amount sufficient to increase fatty acid oxidation in said muscle cells or decreasing the expression of fatty acid synthase in adipocytes.

24. The method according to claim 23, wherein about 1 to 10 grams of leucine is administered to said individual.

25. The method according to claim 24, wherein said leucine is administered orally.