MX2012005976A - Pharmaceutical compositions for the stimulation of stem cells. - Google Patents
Pharmaceutical compositions for the stimulation of stem cells.Info
- Publication number
- MX2012005976A MX2012005976A MX2012005976A MX2012005976A MX2012005976A MX 2012005976 A MX2012005976 A MX 2012005976A MX 2012005976 A MX2012005976 A MX 2012005976A MX 2012005976 A MX2012005976 A MX 2012005976A MX 2012005976 A MX2012005976 A MX 2012005976A
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Abstract
The invention relates to a human or veterinary pharmaceutical composition (B) for the stimulation of stem cells, comprising at least two stem-cells-stimulating- agents and at least one pharmaceutically acceptable excipient.
Description
PHARMACEUTICAL COMPOSITIONS FOR THE STIMULATION OF .LOS
CITOBLASTOS
Field of the Invention
The present invention relates generally to pharmaceutical compositions suitable for targeting organs and / or tissues. In particular, it relates to the treatment of heart diseases by means of the administration of cytoblast stimulating agents to the heart of an individual having a need for the regeneration of heart tissue. In particular, it discloses the use of such cytoblast stimulating agents to improve the regeneration of cardiac tissue from cardiac cytoblasts in vivo.
Background of the Invention
Myocardial infarction (MI) leads to loss of cardiomyocytes, scar formation, ventricular remodeling, and eventually heart failure. Pharmacological interventions, based on catheters and surgical, have led to improved survival of patients with coronary artery disease (CAD), although they fail to regenerate the dead myocardium. Consequently, reduced mortality is accompanied by increased morbidity due to ischemic heart failure. In years
REF.230761 recent, stem cell therapy has emerged as a potential new strategy for cardiac repair (Dimmeler S. et al., J Clin Invest 2005, 11, 572-583). The optimal source of cells to repair damaged myocardium is a topic of intense research. The important characteristics of the stem cells for cardiac regeneration include self-renewal, clonogenicity, and the ability to differentiate them in cardiomyocytes, endothelial cells and vascular smooth muscle cells.
Over the past 10 years, researchers have applied several progenitor / stem cells, derived from the bone marrow (BM), for cardiac repair therapy in animal studies, such as lineage BM stem cells. negative (lin neg), positive to c-kit (c-kit pos), (Orlic et al., Nature 2001; 410: 701-705; Kajstura et al., Circ Res. 2005; 96: 127-137; Rota et al., Proc Nati Acad Sci USA 2007; 104: 17783-17788), the mesenchymal stem cells derived from BM (MSCs) (Min et al., Ann Thor Surg 2002; 74: 1568-1575; Amado et al., Proc Nati Acad Sci USA 2005; 102: 11474-11479) and endothelial progenitor cells (EPCs) (Cho et al., J Exp Med 2007; 204: 3257-3269; Schuh et al., Basic Res Cardiol 2008; 103: 60-77). Although these studies show the differentiation of progenitor / stem cells, derived from BM in cells with the distinctive characteristics of cardiomyocytes and vascular cells, other studies suggested that transplanted BM stem cells do not actually acquire a cardiac phenotype. in the injured heart (Balsam et al., Nature 2004; 428: 668-673; Murry et al., Nature 2004; 428: 664-668; Nygren et al., Nat Med 2004; 10: 494-501).
Therefore, improving the differentiation of progenitor / stem cells derived from BM after transplantation remains a great challenge for researchers to effectively utilize these cells in cardiac regenerative therapy. Other sources of stem cells can be used for cardiac regenerative therapy apart from progenitor / stem cells derived from BM. In particular, resident cardiac cytoblasts (CSCs) were discovered in the heart itself (Beltrami et al., Cell 2003; 114: 763-776; Uranek et al., Proc Nati Sci USA 2006; 103: 9226-9231). Because the CSCs already reside within the heart and are programmed to generate cardiac tissue, they represent a logical source for exploitation in cardiac regenerative therapy, when a massive loss of cardiac tissue has occurred. Since the CSCs have unique characteristics, the identification of the resident CSCs create a great excitation and intense diffused stimulation, for the regeneration of the myocardium with the cells that are of the own heart and that for this reason are inherently programmed to reconstitute the cardiac tissue.
Myocardial repair requires the formation of new myocytes and coronary vessels, and can not be effected by a cell already fully compromised with respect to myocyte lineage. In the presence of an infarction, the generation of myocytes alone can not restore contractile functioning in the akinetic region, - the myocytes will not grow or survive in the absence of vessel formation. Arterioles are critical for blood supply, and oxygen supply is controlled by the capillary network. Similarly, neovasculogenesis alone could not restore the dead myocardium or reinstitute contractile activity in the infarcted portion of the ventricular wall. The observation that CSCs injected locally into the infarcted myocardium of animals repaired the necrotic tissue and improved ventricular function (Beltrami et al., Cell 2003; 114: 763-776; Bearzi et al., Proc Nati Sci USA 2007; 104: 14068-14073) has formed the basis of a new paradigm in which CSCs are involved in the normal turnover of myocytes, endothelial cells, smooth muscle cells, and fibroblasts. In an attempt to develop strategies that reveal the future treatment of patients, new hypotheses have emerged that move in the field in a direction that defines CSC therapy clinically on an individual basis.
Accordingly, several attempts have been made to use the discovered CSCs for clinical applications. The first method is the isolation, cultivation, cloning and expansion of CSCs. Such cells could be injected back into the infarcted heart in an attempt to regenerate the functional myocardium. However, the healing capacity of the CSC cell population, combined with the strict conditions of cell culture and poor yield, are limiting factors for using this method. The other alternative described in the art is the recruitment and differentiation of endogenous CSCs using exogenous agents. However, no clear evidence on the efficacy of this method has been described, causing uncertainty about the ability to recruit and effectively differentiate CSCs in vivo.
Brief Description of the Invention
The present invention provides a totally novel method for stimulating resident CSCs in vivo and, in one aspect, for committing them to the cardiac lineage particularly to obtain from them a significant number of satisfactorily functional cells with the distinctive characteristics of cardiomyocytes.
The invention relates to a human or veterinary pharmaceutical composition (B) for the stimulation of the stem cells, comprising at least two agents stimulating the stem cells and at least one pharmaceutically acceptable excipient.
At least two cytoblast stimulating agents can be selected from the group consisting of TGFp-1, BMP-4, FGF-2, IGF-1, Activin-A, alf-thrombin, Cardiotrophin 1, Cardiogenol C and mixtures thereof. . In particular, at least two cytoblast stimulating agents can be selected from the group consisting of TGFp-1, BMP-4, FGF-2, IGF-1, Activin-A, Cardiotrophin 1, Cardiogenol C and mixtures thereof.
The invention also relates to a pharmaceutical cocktail comprising a pharmaceutical composition (B) according to the present invention and a composition (A) comprising at least one pharmaceutically active substance. The composition or cocktail of the present invention makes it possible to provide cytoblasts guided by the stimulating agent which means that the resistant cardiac stem cells, after having been put in contact with the composition or cocktail, are stimulated to enter into differentiation. Therefore, stimulated stem cells can be involved in a cardiac lineage and can become cardiomyocytes.
Within the framework of this document, and unless there is an indication to the contrary, the terms subsequently designated in quotation marks have the following definitions.
When used herein, the term "stimulation or stimulant" refers to the recruitment, proliferation, survival and / or differentiation of the stem cells.
When used herein, the terms "cardiac tissue" and "myocardium" refer to myocytes, blood vessels and fibroblasts.
"Cardiac cytoblast" (CSC), "cardiac progenitor cell", "resident cardiac cytoblast" or "resident cardiac progenitor cell" designates the cytoblast that is present in the myocardium. They are self-renewing, clonogenic, multipotent and can generate the myocardium.
A "stimulating agent of the stem cells" is an agent that improves the capacity of the stem cells, to be recruited to the site to be regenerated, so that they proliferate and differentiate in the cardiac tissue.
A "composition of the cytoblast stimulating agent" is a composition comprising at least two cytoblast stimulating agents.
A "cytoblasto guided by the stimulating agent" is a cytoblast that was in contact with a composition of the cytoblast stimulating agent as defined above and that also enters into differentiation, that is, is compromised in the cardiac lineage.
"Differentiation" is the process by which a less specialized cell becomes a more specialized cell.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by a person with ordinary experience in the art to which this invention pertains. Although methods and materials similar or equivalent to those described herein can be used to practice the invention, suitable methods and materials are described below. All publications, patent applications, patents, and other references mentioned herein are incorporated for reference in their entirety. In case of conflict, the present specification, including the definitions, will control the meaning of the terms of the present invention. In addition, the materials, methods, and examples are illustrative only and are not intended to be limiting.
Detailed description of the invention
In a preferred embodiment, the pharmaceutical composition (B) can comprise at least five cytoblast stimulating agents selected from the group consisting of TGFp-1, BMP-4, FGF-2, IGF-1, Activin-A, Cardiotrophin 1, Cardiogenol C and mixtures thereof.
In particular, the pharmaceutical composition (B) may comprise TGFp-1, BMP-4, FGF-2, IGF-1, Activin-A, Cardiotrophin 1, and Cardiogenol C.
In addition, the pharmaceutical composition (B) may optionally further comprise alpha-thrombin. The pharmaceutical composition (B) may further comprise thrombin inhibitors, such as hirudin, bivalirudin, lepirudin, deirudin, argatroban, melagatran, ximelagatran, dabigatran, and heparin. Alpha-thrombin is a coagulating agent. Alternatively, in some cases, the pharmaceutical composition (B) may optionally be free of alpha-thrombin.
The pharmaceutical composition (B) of the present invention may further comprise at least one substance selected from the group consisting of growth factors, cytokines, hormones and combinations thereof. At least one substance can be selected from the group consisting of:
- Morphogenetic bone proteins (BMPs) such as BMP-1, BMP-2, BMP-5, BMP-6;
- the epidermal growth factor (EGF, for its acronym in English);
- erythropoietin (EPO, for its acronym in English);
- Fibroblast growth factors (FGF) such as FGF-1, FGF-4, FGF-5, FGF-12, FGF-13, FGF-15, FGF-20;
the granulocyte colony stimulating factor (G-GSF, for its acronym in English)
the stimulating factor of the macrophage-granulocyte colony (GM-CSF, for its acronym in English);
- the growth differentiation factor 9 (GDF-9);
the growth factor of hepatocytes (HGF, for its acronym in English);
- the insulin-like growth factor (IGF) such as IGF-2;
- myostatin (GDF-8);
- neurotrophins such as NT-3, NT-4, NT-1 and nerve growth factor (NGF, for its acronym in English);
the platelet derived growth factor (PDGF) such as PDGF-beta, PDGF-AA, PDGF-BB;
- thrombopoietin (TPO, for its acronym in English);
TGF- (transforming growth factor alpha)
p transformation growth factors, (TGF-β) such as TGF-β ?, TGF-02, TGF-p3;
- VEGF (vascular endothelial growth factor) such as VEGF-A, VEGF-C;
- TNF-a, Leukemia inhibitor factor (LIF), interleukin 6 (IL-6), retinoic acid, SDF-1 C (stromal cell-derived factor 1), BDNF ( neurotrophic factor derived from the brain), Periostine, Angiotensin II, Ligand FIt3, Glial Derived Neurotrophic Factor, Heparin, Agglutination Protein 3 to Insulin-like Growth Factor, Agglutination Protein 5 to Insulin-like Growth Factor, Interleukin 3, Interleukin 8, Midchin, Progesterone, Putrescein, Cytoblast Factor, TGF-alpha, ntl, nt3a, nt5a, caspase-4, chemokine ligand 1, chemokine ligand 2, chemokine ligand 5, ligand 7 of the chemokine, ligand 11 of the chemokine, ligand 20 of the chemokine, haptaglobin, lectin, 25-hydroxylase cholesterol, syntaxin-8, syntaxin-11, ceruloplasmin, component 1 of the complement, component 3 of the complement, alpha integrin 6, 1 lysosomal acid lipase, -2 ml croglobulin, ubiquitin, macrophage migration inhibiting factor, cofilin, cyclophilin A, FKBP12, NDPK, profilin 1, cystatin C, calcicin, staiocalcin-1, PGE-2, mpCCL2, IDO, iNOS, HLA-G5, M-CSF , angiopoietin, PIGF, CP-1, extracellular matrix molecules, CCL2 (MCP-1), CCL3 (??? - 1a), CCL4 (??? - 1Âß), CCL5 (RANTES), CCL7 (MCP-3) ), CCL20 (?? - 3a), CCL26 (eotaxin-3), CX3CL1 (fractalkine), CXCL5 (??? - 78), CXCL11 (i-TAC), CXCL1 (GROOÍ), CXCL2 (GROp), CXCL8 ( IL-8), CCL10 (??? 10) and combinations thereof.
The stem cells that are to be stimulated may be resident cardiac cytoblasts (CSCs) or circulating cytoblasts or injected stem cells.
The pharmaceutical composition may comprise primary particles. The primary particles may be selected from the group consisting of alginates, chitosan, dextran, cellulose, liposomes, or microspheres or polyester nanospheres such as PLGA, polycaprolactone or copolyesters. Preferably, the primary particles can encapsulate at least two cytoblast stimulating agents of the pharmaceutical composition (B). Accordingly, the primary particles can encapsulate the cytoblast stimulating agents comprised in the pharmaceutical composition (B). The term "primary" means that the pharmaceutical composition can be encapsulated in a first type of particles as defined above.
Preferably, the pharmaceutical composition (B) can be combined with a composition (A) comprising at least one pharmaceutically active substance to form a pharmaceutical cocktail. In one embodiment, at least one pharmaceutically active substance can be selected from the group consisting of insulin-like growth factor 1 (IGF-1), hepatocyte growth factor (HGF) and / or variants thereof such as NK1, 1K1, 1K2, HP11, or HP21, and combinations thereof. In another embodiment, the composition (A) may further comprise SCF-1. The composition (A) may further comprise secondary particles selected from the group consisting of alginates, chitosan, dextran, cellulose, liposomes, or microspheres or nanospheres of polyesters such as PLGA, polycaprolactone or copolyesters. The secondary particles can encapsulate at least one pharmaceutically active substance. The term "secondary" means that the composition (A) can be encapsulated in a second type of particles as defined above. In addition, the secondary particles can be configured to allow a supply of the substances encapsulated there before the delivery of the substance encapsulated in the primary particles.
The pharmaceutical cocktail may comprise a sample of the composition (B) and a sample of the composition (A). Alternatively, both compositions (A) and (B) can be mixed together in a single sample. When mixed together, the compositions (A) and (B) may, however, be administered to, or supplied in the area, or surrounding the area to be treated separately.
The pharmaceutical composition of the present invention or the pharmaceutical cocktail can be used as a medicine. Alternatively, the pharmaceutical composition of the present invention or the pharmaceutical cocktail can be used for the regeneration of cardiac tissue. Alternatively, the pharmaceutical composition of the present invention or the pharmaceutical cocktail can be used for the treatment of heart disease, including heart failure, cardiac ischemia or myocardial infarction.
In another aspect of the present invention, a process for acting in vivo or ex vivo on the CSCs of humans or animals is provided. The process comprises the step of administering the pharmaceutical composition (B) or the pharmaceutical cocktail of the present invention to humans or animals.
The administration of the pharmaceutical composition (B) can follow a preliminary administration of a composition (A) comprising at least one pharmaceutically active substance.
The administration can be effected by the consecutive injection of the composition A, B or the cocktail.
In addition, the duration between two successive administrations of the pharmaceutical composition or the pharmaceutical cocktail of the present invention may be from one hour to 180 days. Each administration can be repeated. Alternatively, each or some of the composition administrations (A) may be optional.
Accordingly, the pharmaceutical composition (B) or the pharmaceutical cocktail can be administered parenterally. In addition, the pharmaceutical composition (B) or the pharmaceutical cocktail can be administered in the circulatory system of a human or animal. The pharmaceutical composition (B) or the pharmaceutical cocktail can be administered in the veins and / or the arteries.
The pharmaceutical composition (B) or the pharmaceutical cocktail of the present invention can be administered to cardiac tissue. In the preferred embodiment, the administration can be intracoronary for the pharmaceutical composition (B) and intravenous for the preliminary administration of the composition (A).
TGFp as used herein refers to TGFp-1, TGFp-2 or TGFp-3 and can be any polypeptide having TGFp activity, such as human TGF. For example, TGF can be recombinant TGF. In one modality,, # 1. TGF can be TGFp-1. Any appropriate concentration of TGFp can be used. For example, between 0.1 and 100 ng of TGF-β per ml (for example, approximately 33 ng of TGFp per ml) can be used.
The BMP can be any polypeptide having BMP activity, such as human BMP. For example, BMP can be recombinant BMP. In one embodiment, the BMP may be the BMP4. Any concentration of BMP can be used. For example, between 0.1 and 200 ng of BMP per ml (for example, approximately 65 ng of BMP4 per ml) can be used.
FGF-2 can be any polypeptide having the FGF-2 activation, such as human FGF-2. For example, FGF-2 can be recombinant FGF-2. Any concentration of FGF-2 can be used. For example, between 0.1 and 200 ng of FGF-2 per ml (eg, approximately 65 ng of FGF-2 per ml) can be used.
IGF-1 can be any polypeptide having IGF-1 activity, such as human IGF-1. For example, IGF-1 may be recombinant IGF-1. Any concentration of IGF-1 can be used. For example, between 1 and 1000 ng of IGF-1 per ml (for example, approximately 650 ng of IGF-1 per ml) can be used.
Activin-A can be any polypeptide having the activity of Activin-A, such as human Activin-A. For example, Activin-A may be recombinant Activin-A. Any concentration of Activin-A can be used. For example, between 0.1 and 500 ng of Activin-A per me (for example, approximately 130 ng of Activin-A per me) can be used.
The α-thrombin may be any polypeptide having the α-thrombin activation, such as human α-thrombin. For example, the -trombine can be recombinant a-thrombin or synthetic a-thrombin. Any concentration of α-thrombin can be used. For example, between 0.05 and 100 units of a-thrombin per me can be used.
Cardiotrophin can be any polypeptide having the activity of cardiotrophin, such as human cardiotrophin. For example, cardiotrophin can be recombinant cardiotrophin. Any concentration of cardiotrophin can be used. For example, between 0.05 and 100 ng of cardiotrophin per ml (for example, approximately 13 ng of cardiotrophin per ml) can be used.
IL-6 can be any polypeptide having the activity of IL-6, such as human IL-6. For example, IL-6 can be recombinant IL-6. Any concentration of IL-6 can be used. For example, between 10 and 400 NG of IL-6 per me can be used.
Any concentration of Cardiogenol C or a pharmaceutically acceptable salt thereof (eg, Cardiogenol C hydrochloride) can be used. For example, between 1 and 1000 ng of Cardiogenol C per ml (for example, approximately 350 ng per ni of Cardiogenol C) can be used.
The retinoic acid can be any molecule that has the activity of retinoic acid, such as synthetic retinoic acid, natural retinoic acid, a metabolite of vitamin A, a natural derivative of vitamin A or a synthetic derivative of vitamin A. Any concentration of retinoic acid can be used. For example, between 1 x 10"7 and 4 x 10 ~ 6 μ? Of retinoic acid can be used.
In some cases, serum-containing or serum-free medium supplemented with TGF-1 (for example, 2.5 ng / ml), BMP 4 (for example, 5 ng / ml), FGF-2 (for example, 5 ng / ml) ), IGF-1 (e.g., 50 ng / ml), Activin A (e.g., 10 ng / ml), Cardiotrophin (e.g., 1 ng / ml), ot-thrombin (e.g., 1 unit / ml) and Cardiogenol C (for example, 100 nM) can be used. In some cases, the medium (e.g., the serum-containing or serum-free medium) may contain the platelet lysate (e.g., a human platelet lysate).
In some cases the composition used to stimulate CSCs may contain additional optional factors such as TNF-, LIF, and VEGF-A.
TNF-α can be any polypeptide having a TNF-α activity, such as human TNF-α. For example, TNF- may be recombinant TNF-α. Any concentration of TNF-a can be used. For example, between 0.5 and 100 ng of TNF-a can be used for me.
The LIF can be any polypeptide having a LIF activity, such as human LIF. For example, the LIF may be the recombinant LIF. Any concentration of LIF can be used. For example, between 0.25 and 200 ng of LIF can be used for me.
The VEGF-A can be any polypeptide having a VEGF-A activity, such as human VEGF-A. For example, VEGF-A can be recombinant VEGF-A. Any concentration of VEGF-A can be used. For example, between 0.5 and 400 ng of VEGF-A per my can be used.
A composition provided herein can be prepared using any suitable method. For example, a composition provided herein can be prepared using commercially available stimulating agents. In some cases, a composition provided herein may be prepared to contain cell lysates (e.g., a platelet lysate) or a conditioned medium of cells such as cardiomyocyte cells or endothermic cells stimulated with TNF-a. For example, a composition provided herein can be prepared using a platelet lysate, supplemented with commercially available factors. In some cases, a composition provided herein can be prepared using the factors isolated from the conditioned medium. In some cases, the factors can be dissolved in a medium such as the culture medium of the cells that contain or do not contain the serum.
Examples
Tests were performed on sharply infarcted pigs. The following protocol is established. The infarction is performed at T0 for 90 minutes of left anterior descending occlusion (LAD) followed by a 30-minute reperfusion. At the end of the reperfusion (TI), a primary composition is administered parenterally to the animals by distal intercoronary supply with respect to the site of the occlusion. An osmotic pump loaded with BrdU is also implanted subcutaneously in IT. Fourteen days later (T2) a secondary composition is administered parenterally to the animals. The administration of both compositions can be achieved with different methods of administration such as intravenous injection, intramuscular injection or intracoronary injection. Finally, at 42 days (T3) the euthanasia of the pigs is carried out.
The concentration of the constituents is mentioned in brackets. Two compositions, alone or in combination, are tested:
- Composition A consists of IGF-1 (8 pg in 15 ml of the Phosphate Buffer Solution (PBS)) and HGF (2 ug in 15 ml of PBS) and
- composition B consists of TGFp-1 (0.5 ig in 15 ml of PBS), BMP 4 (1 xg in 15 ml of PBS), FGF-2 (1 pg in 15 ml of PBS), IGF-1 (10 μg in 15 ml of PBS), Activin A (2 pg in 15 ml of PBS), Cardiotrophin 1 (0.2 g in 15 ml of PBS) and Cardiogenol C (5.2 pg in 15 ml of PBS).
Both compositions are in a pharmaceutically acceptable excipient. The pharmaceutically acceptable excipient may be a phosphate buffered solution (PBS), Hartmann's solution, Ringer's lactate, physiological NaCl (0.9% NaCl) supplemented or not with albumin or with any suitable protein stabilizing composition.
Five treatment groups of 5 animals each are evaluated.
- Treatment group 1 is a control group and only receives the saline solution in TI and T2.
- Treatment group 2 receives a solution containing composition A in TI and a saline solution in T2, designated as mixture A.
- Treatment group 3 receives a solution containing composition A in TI and a solution containing composition B in T2, marked mixture A + B.
- Treatment group 4 receives a solution containing composition B in TI and T2, marked mixture B + B.
- Treatment group 5 receives a solution containing composition B in IT and a saline solution in T2, marked mixture B.
The protocol is summarized in table 1.
Table 1
The blood tests were carried out at different intervals. Blood samples were collected from 2 pigs per treatment group in the coronary sinus by means of the jugular vein and venous blood through the vein of the ear. After primary administration, samples are collected at Tl + 5 min; Tl + 1 h and Tl + 6 h. After secondary administration, samples are collected at T2 + 5 min; T2 + 1 h, T2 + 6 h and T2 + 24 h. The ELISA immunoassays were carried out with the samples for the quantification of IGF-1 and the concentration of cardiotrophin 1.
Magnetic resonance imaging (MRI) is also performed on all animals at Tl + 3 days; T2 and T3 to study the healing area, the global left ventricular function, the regional function (movement and thickening of the wall) and the regional perfusion of the ventricle. MRI allows to detect and confirm the presence of new vessels, tissues or cells that improve ventricular function.
Histopathology is also performed to determine the area of scarring, identification and quantification of cardiac positive cytoblasts in kit c. Histopathology also provides data on the distribution, size and density of new vessels and cardiomyocytes. Histopathology allows to document the repair process in the tissue and at the cellular level.
Critical variables have been considered in the analysis of cardiac repair: (1) the amount of reconstituted tissue or myocardial mass and the coronary vasculature; < 2) the number and size of the myocytes and the restored vessels; (3) the integration of myocytes and vessels recently formed with the surrounding myocardium, and / or (4) the origin of the regenerated myocardial structures.
Heart attack result
The imaging images by MRI were used to evaluate the infarct size, the infarction weight and the infarct area. The results are listed in Table 2 below.
Table 2
The experiments show that the area of infarction was approximately 19.8% for the control group and approximately 19% for groups 2 and 4 where mixture A and mixture B + B respectively were used. Surprisingly, using composition (B) according to the present invention, the infarct area was limited to 13.7% for group 5 (mixture B). Accordingly, composition (B) according to the present invention was very efficient to treat infarction, such as myocardial infarction, compared to the other composition.
In addition, it was also surprisingly observed that when the injection of mixture B followed by the preliminary injection of mixture A, the infarcted area was further limited to the value of approximately 9.6%. This is a result that could not be expected based on the results observed for the other groups. Actually, the mixture A used for group 2 was almost inefficient when alone. A synergistic effect was observed using a pharmaceutical cocktail according to the present invention. This result was confirmed with histopathology and immunohistochemistry tests.
Histopathology
The results were compiled separately for the sections taken in the boundary zone or within the central areas of the inf orto. The results for all groups are listed in Table 3 below. The data shown in Table 3 are average data of the heart slices analyzed for an animal of each group.
Table 3
The relationship between infarction and scar size represents the size of the infarction, while transmurality is a parameter that establishes whether the infarct is located strongly on the outer surface of the myocardium or extends through the internal surface of the myocardium. The higher the value of the transmurality, the greater the infarction.
With regard to the borderline infarction, Table 3 shows that the mixture A, the B + B mixture or the control mixture had almost no impact on the infarct size. In these cases, the relationship between the infarction and the size of the scar varied from 31.4% to 36.0%. On the contrary, when the composition according to the present invention is used (ie, mixture B), the ratio between the infarct and the size of the scar was surprisingly reduced up to 26%. This value can be further reduced to 20% when the pharmaceutical cocktail according to the present invention (ie mixture A + B) was used. This experiment demonstrates that the present pharmaceutical composition and the pharmaceutical cocktail are effective in treating heart disease. This was also confirmed when the experiments were carried out in the infarct zone.
Additionally, it was surprisingly demonstrated that the transmurality was reduced with mixture B alone or with mixture A + B. This means that the composition (B) of the present invention alone or when combined with the composition (A) allows the limitation of the infarction expansion to the outer surface of the myocardium. This is further evidence that the pharmaceutical composition and the pharmaceutical cocktail according to the present invention are powerful compositions for treating diseases or heart problems.
Accordingly, it is clear from the experiments described above that both the pharmaceutical composition and the pharmaceutical cocktail according to the present invention are suitable for the treatment of heart failure in a secondary manner with respect to myocardial ischemia, ischemia or infarction. of myocardium.
Immunohistochemistry
The tests were performed to evaluate, within the infarction sections, the density of the microvessels (vWF-positive vessels / mm2), the BrdU-positive cells and the kit-positive cells c. The quantification of the density of microvessels using von ilebrand factor (vWF) allows the determination of the quantity of new blood vessels created in the infarct zone. Tests of BrdU-positive cells represent the proliferation of cells, including cardiac cells. Tests of cells positive to kit c show the amount of CSC within selected sections of infarction. The results are listed in Table 4. These tests were performed only for group 1 (Control group), group 3 (Mixture A + B) and group 5 (Mixture B).
Table 4
The results show that when the compositions (A) and (B) in combination or the composition (B) alone, according to the invention, are injected into the heart, they have a great impact on the stimulation of cardiac or cytoblast cells. the proliferation of cardiac cells. Actually, the density of the microvessels is improved and the new blood vessels were created during the stimulation with the present composition or the present cocktail. The results obtained with groups 3 or 5 reached 34.2 and 34.3 respectively, compared with 27.9 for the control group. This is confirmed with the BrdU positive cell test which shows that the proliferation of the cells was improved with the composition of the present invention and that strong cell activity is observed. When Mix B was injected, 36.0% of the BrdU positive cells were observed compared to only 22.1% for the control group. This clearly emphasizes that the pharmaceutical composition according to the present invention promotes cell proliferation and therefore the formation of new myocytes and vessels with the surrounding myocardium. This can be further improved when the pharmaceutical cocktail according to the present invention was used. A value of 52.7% was reached with such a cocktail. Accordingly, both the pharmaceutical composition and the pharmaceutical cocktail according to the present invention are suitable for improving the regeneration of heart tissue.
The ability of the pharmaceutical cocktail to induce and promote the activation and proliferation of CSC was confirmed by testing the cells positive to kit c. Testing cells positive to kit c allows demonstrating that resident CSCs are consumed since their amount has been significantly reduced when the A + B mixture was used compared to the control group. Consequently, the regenerated myocardial structures are originated from resident cardiac cytoblasts. The present composition and / or cocktail are effective for in vivo stimulation of resident cardiac cytoblasts.
The terms and descriptions used here are described by way of illustration only and are not understood as limitations. Those skilled in the art will recognize that many variations are possible within the spirit and scope of the invention as defined in the following claims, and their equivalents, in which all of the terms are to be understood in their broadest possible sense to unless indicated otherwise. As a consequence, all modifications and alterations will occur to other people during the reading and understanding of the previous description of the invention. In particular, the dimensions, materials, and other parameters, given in the above description, may vary depending on the needs of the application.
It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.
Claims (32)
1. A human or veterinary pharmaceutical composition (B) for the stimulation of the stem cells, characterized in that it comprises at least two agents stimulating the stem cells and at least one pharmaceutically acceptable excipient.
2. A pharmaceutical composition according to claim 1, wherein at least two stimulating agents stem cells are selected from the group consisting of TGFP-l, BMP-4, FGF-2, IGF-1, Activin A, Cardiotrophin 1 Cardiogenol C and the mixtures thereof.
3. A pharmaceutical composition according to claim 2, characterized in that the stimulating agents of the stem cells are TGFp-1, BMP-4, FGF-2, IGF-1, Activin A, Cardiotrophin 1 and Cardiogenol C.
4. A pharmaceutical composition according to any of the previous, claims, characterized in further comprising thrombin inhibitors selected from the group consisting of hirudin, bivalirudin, lepirudin, deirudina, argatroban, melagatran, ximelagatran, dabigatran, and heparin.
5·. A pharmaceutical composition according to any of the previous claims, characterized in that it also comprises at least one substance selected from the group consisting of the growth factors, cytokines, hormones and combinations thereof.
6. A pharmaceutical composition according to claim 5, characterized in that at least one substance is selected from the group consisting of: - Morphogenetic bone proteins (BMPs) such as BMP-1, BMP-2, BMP-5, BMP-6; - the epidermal growth factor (EGF, for its acronym in English); - erythropoietin (EPO, for its acronym in English); fibroblast growth factors (FGF) such as FGF-1, FGF-4, FGF-5, FGF-12, FGF-13, FGF-15, FGF-20; the granulocyte colony-stimulating factor (G-CSF, for its acronym in English); the stimulating factor of the macrophage-granulocyte colony (GM-CSF); the growth differentiation factor 9 (GDF-9); the growth factor of hepatocytes (HGF, for its acronym in English); - the insulin-like growth factor (IGF) such as IGF-2; - myostatin (GDF-8, for its acronym in English); - neurotrophins such as NT-3, NT-4, NT-1 and nerve growth factor (NGF, for its acronym in English); the platelet derived growth factor (PDGF) such as PDGF-beta, PDGF-AA, PDGF-BB; - thrombopoietin (TPO, for its acronym in English); - TGF- (transforming growth factor alpha) ß transforming growth factors, (TGF-ß) such as TGF-ß ?, TGF-p2, TGF-ß3; - VEGF (vascular endothelial growth factor) such as VEGF-A, VEGF-C; - TNF-a, Leukemia inhibitor factor (LIF), interleukin 6 (IL-6), retinoic acid, SDF-1 C (stromal cell-derived factor 1), BDNF ( brain-derived neurotrophic factor), periostin, Angiotensin II, Ligand Flt3, the derived neurotrophic factor Glial, Heparin, Protein 3 Agglutination factor like growth Insulin, Protein 5 Clumping factor like growth Insulin, interleukin 3, interleukin 8, midkine, Progesterone, Putresceina, Factor of stem cells, TGF-alpha, ntl, Wnt3a, Wnt5a, caspase-4, ligand-1 chemokine ligand 2 chemokine ligand 5 of the chemokine ligand 7 of the chemokine, ligand 11 of the chemokine, ligand 20 of the chemokine, haptaglobin, lectin, 25-hydroxylase cholesterol, syntaxin-8, syntaxin-11, ceruloplasmin, component 1 of the complement, component 3 of complement, alpha integrin 6, lipase 1 of lysosomal acid,? -2 microglobulin, ubiquitin, macrophage migration inhibiting factor, cofilin, cyclophilin A, FKBP12, NDPK, profilin 1, cystatin C, calciclin, staiocalcin- l, PGE-2, mpCCL2, IDO, iNOS, HLA-G5, M-CSF, angiopoietin, PIGF, CP-1, extracellular matrix molecules, CCL2 (MCP-1), CCL3 (??? - 1a), CCL4 (MIP-? ß), CCL5 (RANTES), CCL7 (MCP-3), CCL20 (MIP-3a), CCL26 (eotaxin-3), CX3CL1 (fractalkine), CXCL5 (ENA-78), CXCL11 (i- TAC), CXCL1 (GROa), CXCL2 (GRC), CXCL8 (IL-8), CCL10 (IP-10) and combinations thereof.
7. A pharmaceutical composition according to any one of the preceding claims, characterized in that the cytoblasts to be stimulated are resident cardiac cytoblasts or circulating cytoblasts or injected cytoblasts.
8. A pharmaceutical composition according to any of the previous claims, characterized in that it comprises primary particles.
9. A pharmaceutical composition according to claim 8, characterized in that the primary particles are selected from the group consisting of alginates, chitosan, dextran, cellulose, liposomes, and microspheres or polyester nanospheres such as PLGA, polycaprolactone or copolyesters.
10. A pharmaceutical composition according to claim 8 or 9, characterized in that the primary particles encapsulate the cytoblast stimulating agents of the pharmaceutical composition.
11. A pharmaceutical cocktail, characterized in that it comprises a pharmaceutical composition (B) according to any of the previous claims and a composition (A) comprising at least one pharmaceutically active substance.
12. A pharmaceutical cocktail according to claim 11, characterized in that at least one pharmaceutically active substance is selected from the group consisting of the insulin-like growth factor 1 (IGF-1), the hepatocyte growth factor (HGF) and / or the variants thereof such as NK1, 1K1, 1K2, HP11, or HP21, and combinations thereof.
13. A pharmaceutical cocktail according to claims 11 or 12, characterized in that at least one pharmaceutically active substance further comprises SCF-I.
14. A pharmaceutical cocktail according to any of the previous claims 11 to 13, characterized in that the composition (A) further comprises secondary particles selected from the group consisting of alginates, chitosan, dextran, cellulose, liposomes, or microspheres or polyester nanospheres such as PLGA, polycaprolactone or copolyesters.
15. A pharmaceutical cocktail according to claim 14, characterized in that the secondary particles encapsulate at least one pharmaceutically active substance.
16. A pharmaceutical cocktail according to claim 14 or 15, characterized in that the secondary particles are configured to allow a supply of the substance encapsulated therein prior to the delivery of the substance encapsulated in the primary particles.
17. A pharmaceutical composition according to any of claims 1 to 10, or a pharmaceutical cocktail according to any of claims 11 to 16, characterized in that they are used as a medicine.
18. A pharmaceutical composition according to any of claims 1 to 10, or a pharmaceutical cocktail according to any of claims 11 to 16, characterized in that they are used for the regeneration of cardiac tissue.
19. A pharmaceutical composition according to any of claims 1 to 10, or a pharmaceutical cocktail according to any of claims 11 to 16, characterized in that they are used in the treatment of cardiac tissue degeneration.
20. A pharmaceutical composition according to any one of claims 1 to 10, or a pharmaceutical cocktail according to any of claims 11 to 16, characterized in that they are used in the treatment of heart disease, including heart failure, cardiac ischemia. or myocardial infarction.
21. A process for acting in vivo or ex vivo on cardiac cytoblasts of a human being or animals, characterized in that a pharmaceutical composition (B) according to claims 1 to 10, is administered to humans or animals.
22. A process according to claim 21, characterized in that the administration of the composition (B) follows a preliminary administration of the composition (A) comprising at least one pharmaceutically active substance.
23. A process according to claims 21 or 22, characterized in that the administration is effected by injection.
24. A process according to any of the preceding claims 21 to 23, characterized in that the administration is a consecutive injection.
25. A process according to any of the previous claims 21 to 24, characterized in that the duration between two successive administrations of the pharmaceutical composition (B) according to any of the previous claims 1 to 10, is from 1 hour to 180 days.
26. A process according to any of the previous claims 21 to 25, characterized in that each administration is repeated.
27. A process according to any of the previous claims 21 to 26, characterized in that the compositions (A) or (B) are administered parenterally.
28. A process according to any of the previous claims 21 to 27, characterized in that the compositions (A) or (B) are administered in the circulatory system of a human or animal.
29. A process according to any of the previous claims 21 to 28, characterized in that the compositions (A) or (B) are administered in the veins and / or the arteries.
30. A process according to any of the previous claims 21 to 29, characterized in that the compositions (A) or (B) are administered to the cardiac tissue.
31. A process according to any of the previous claims 21 to 30, characterized in that the administration is intracoronary for the pharmaceutical composition (B) and intravenous for the preliminary administration of the composition (A).
32. A process according to any of the previous claims 21 to 26, characterized in that each administration of the composition (A) is optional.
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CA (1) | CA2781493A1 (en) |
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CN106456676B (en) * | 2014-07-07 | 2021-07-23 | 米迪波斯特股份有限公司 | Hair growth promoting function of medium of stimulated stem cells and application thereof |
CN105079791A (en) * | 2015-09-18 | 2015-11-25 | 郑榆坤 | Composition for stimulating endogenous stem cells in vivo and application of composition |
RU2634576C1 (en) * | 2016-10-24 | 2017-10-31 | Федеральное государственное бюджетное научное учреждение "Томский национальный исследовательский медицинский центр Российской академии наук" (Томский НИМЦ) | Method for tissue regeneration stimulation |
CN107050428B (en) * | 2017-03-23 | 2020-05-05 | 温州医科大学 | FGF20 medicament and application thereof in treatment of cerebral trauma |
CN107648592B (en) * | 2017-11-13 | 2021-05-14 | 深圳市喆邦生物工程有限公司 | Application of chemokine CCL4 in preparation of medicine for treating bone fracture |
RU2686718C1 (en) * | 2018-03-12 | 2019-04-30 | Федеральное государственное бюджетное научное учреждение "Томский национальный исследовательский медицинский центр Российской академии наук" (Томский НИМЦ) | Agent stimulating mesenchymal progenitor cell functions in vitro |
KR102106710B1 (en) | 2018-10-11 | 2020-05-04 | 강원대학교산학협력단 | hematopoietic differentiation of human pluripotent stem cells in a developmental stage-specific manner |
CN111195350A (en) * | 2020-01-15 | 2020-05-26 | 重庆大学 | Application of combination of IGF1 and IGF1Ec24 in preparation of medicines for promoting tissue repair and regeneration |
US20240058389A1 (en) * | 2020-03-17 | 2024-02-22 | Hierabio Inc. | Composition for preventing or treating ischemic diseases, comprising cardiac stem cells |
CN111621525B (en) * | 2020-06-18 | 2021-04-23 | 中赛干细胞基因工程有限公司 | Application of STX1B gene in promoting growth and differentiation of human adipose-derived mesenchymal stem cells |
CN116836920B (en) * | 2023-08-21 | 2024-05-24 | 广东横琴粤澳深度合作区齐美国际干细胞医院有限公司 | Serum-free culture medium and method for preparing mesenchymal stem cells by using same |
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US9765298B2 (en) * | 2006-07-24 | 2017-09-19 | Mayo Foundation For Medical Education And Research | Methods and materials for providing cardiac cells |
US8481075B2 (en) * | 2007-12-13 | 2013-07-09 | Beijing Shengyiyao Science & Technology Development Co. Ltd. | Preparation and application of biodegradable-material-made microsphere vascular embolus containing liposome-encapsulated cytokines |
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NZ599930A (en) | 2014-04-30 |
RU2012120834A (en) | 2014-01-20 |
JP2013512877A (en) | 2013-04-18 |
IL219901A0 (en) | 2012-07-31 |
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