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Pluripotent stem cell for treatment of chronic kidney disease

a stem cell and chronic kidney disease technology, applied in the field of chronic kidney disease treatment, can solve the problems of loss of kidney function, increasing patient qol and national medical care expenditure, and increasing the number of patients, so as to improve kidney function and suppress the progression of chronic kidney disorder.

Inactive Publication Date: 2016-03-03
CLIO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a method of treating chronic kidney disease using stem cells. The inventors found that when stem cells are injected into mice with chronic kidney disease, they accumulate in the kidneys and help to reconstruct and repair damaged organs. This results in improved kidney function. The technical effect of this invention is to provide a promising treatment for chronic kidney disease that targets the root cause of the condition and has the potential to improve kidney function.

Problems solved by technology

The increase in the number of patients going on dialysis in recent years is creating problems in terms of both patient QOL and national medical care expenditures.
In the case of many chronic kidney diseases, including chronic glomerular nephritis, diabetic nephropathy and polycystic kidney disease, the course of the disease is progressive, and unless treatment is effective, these diseases ultimately result in loss of kidney function, eventually leading to dialysis due to renal failure.
As chronic kidney disease progresses, since the functions possessed by a normal kidney are lost, effects extend to various organs throughout the body, typically resulting in uremia.
However, it is impossible for all patients with chronic kidney diseases to undergo kidney transplant due to a shortage of donors.
Ever since dialysis treatment was first performed on patients with kidney diseases in the 1920s, there has yet to be developed a treatment method that places a reduced burden on the patient.
However, there have yet to be any examples of the use of Muse cells for the prevention and / or treatment of kidney disease, and the obtaining of anticipated therapeutic effects has yet to be clearly determined.

Method used

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  • Pluripotent stem cell for treatment of chronic kidney disease
  • Pluripotent stem cell for treatment of chronic kidney disease
  • Pluripotent stem cell for treatment of chronic kidney disease

Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparation of Mouse Chronic Kidney Disease Model

[0056]The “Regulations for Animal Experiments and Related Activities at Tohoku University” were strictly observed for the experimental protocol using mice in the present example, and experimental animals were prepared in accordance with these regulations under the supervision of the Tohoku University Experimental Animal Center. More specifically, a mouse chronic kidney disease model was prepared by administering doxorubicin hydrochloride (Sigma Corp.) into a caudal vein of Balb / c mice and SCID mice (males, age 11 to 13 weeks) at 11.5 μg / g of mouse body weight. These animal models presented with a clinical picture resembling focal segmental glomerular sclerosis (FSGS), which is one of the causative diseases of chronic renal failure in humans.

example 2

Preparation of Human Muse Cells

[0057]Preparation of human Muse cells was carried out in accordance with the method described in International Publication No. WO 2011 / 007900. More specifically, adhesive mesenchymal cells were cultured from human bone marrow fluid and after the cells proliferated, Muse cells or cell populations containing Muse cells were isolated by FACS as SSEA-3-positive cells. In addition, non-Muse cells consisted of a cell group negative for SSEA-3 present among the aforementioned mesenchymal cells, and were used as a control. Subsequently, the cells were adjusted to a prescribed concentration using phosphate-buffered physiological saline or culture liquid, and were used to evaluate the effects of Muse cells on renal function in the chronic kidney disease mouse model as indicated below. Furthermore, in the case of using cells obtained by culturing mesenchymal cells such as bone marrow-derived mesenchymal cells as a population of Muse cells, all SSEA-3-positive cel...

example 3

Evaluation of Renal Function in a Balb / c Mouse

[0058]Chronic Kidney Disease Model by Transplanting Muse Cells The chronic kidney disease mice (Balb / c) prepared in

[0059]Example 1 were divided into three groups, and Muse cells (2×104 cells, 200 μl), human bone marrow-derived non-Muse cells (2×104 cells, 200 μl) or physiological saline (200 μl) were administered into a caudal vein of mice in each group one week after administration of doxorubicin hydrochloride. Subsequently, after allowing the passage of a prescribed amount of time, creatinine clearance, serum creatinine, blood urea nitrogen (BUN) and urine protein were measured in accordance with ordinary methods for each mouse followed by evaluation of the therapeutic effects of Muse cells on the chronic kidney disease mice. Furthermore, although all of the cells used for administration were of human origin, an immunosuppressant was not used throughout the experimental period when the cells were administered to the mice.

(a) Creatinine...

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Abstract

An object of the present invention is to provide a novel medical application to regenerative medicine that uses pluripotent stem cells (Muse cells). The present invention provides a cell preparation for treating chronic kidney disease that contains SSEA-3-positive pluripotent stem cells isolated from mesenchymal tissue in the body or cultured mesenchymal cells. The cell preparation of the present invention is based on a renal tissue regeneration mechanism by which Muse cells are made to selectively accumulate at a site of kidney disease and differentiate into cells that compose the kidney by administering Muse cells intravenously to a subject having the aforementioned disease.

Description

[0001]The present invention relates to a cell preparation used in regenerative medicine. More specifically, the present invention relates to a cell preparation containing pluripotent stem cells that are effective for repairing and regenerating renal tissue that has been damaged by renal failure.BACKGROUND OF THE INVENTION[0002]The increase in the number of patients going on dialysis in recent years is creating problems in terms of both patient QOL and national medical care expenditures. In the case of many chronic kidney diseases, including chronic glomerular nephritis, diabetic nephropathy and polycystic kidney disease, the course of the disease is progressive, and unless treatment is effective, these diseases ultimately result in loss of kidney function, eventually leading to dialysis due to renal failure. At present, dialysis treatment costs for treating kidney diseases (renal failure) exceeds one trillion yen, accounting for roughly 3% of all medical care expenditures, and the n...

Claims

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Application Information

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IPC IPC(8): A61K35/545
CPCA61K35/545A61P9/12A61P13/02A61P13/12A61P35/00
Inventor YOSHIDA, MASANORIDEZAWA, MARI
Owner CLIO
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