EP2996688A1

EP2996688A1 - Composition comprising a complex of (+)-catechin and amino acid for the treatment and prevention of cancer

Info

Publication number: EP2996688A1
Application number: EP14726103.6A
Authority: EP
Inventors: Paul Niebes; Bronislav Henric MAY; Saïd RACHIDI; Julien Estager; Bruno Schoentjes
Original assignee: Valore SA
Current assignee: VALORE
Priority date: 2013-05-17
Filing date: 2014-05-13
Publication date: 2016-03-23
Also published as: AU2014267398A1; CN105392479A; BR112015028661A2; JP2016518422A; AU2014267398B2; US20160089358A1; EP2996686B1; JP2016518423A; EP2996686A1; CA2912128A1; WO2014184197A1; MX2015015667A; WO2014184198A1; US9844595B2; BE1023772B1; US20160095923A1; BE1023772B9; ES2730947T3; SG11201509433RA

Abstract

The invention relates to a gastro-enteric therapeutic composition for oral administration, comprising a compound of monomeric (+)-catechin and at least one basic amino acid, said composition being characterised in that it is used in the form of a complex of (+)-catechin and at least one basic amino acid or at least one derivative or precursor of a basic amino acid for the curative and/or preventive treatment of cancer, said complex having a molar equivalence ratio of the monomeric (+)-catechin to the at least one basic amino acid or the at least one basic amino acid derivative of between 1: 1 and 1: 2.5.

Description

Composition based on (+) - catechin and amino acid complex for the treatment and prevention of cancer

The present invention relates to an oral gastroenteric composition comprising a monomeric (+) - catechin compound and at least one basic amino acid for mammals, and in particular to humans.

Polyphenols are a family of organic molecules widely present in the plant kingdom. They are characterized, as the name indicates, by the presence of several phenolic groups associated in structures generally of high molecular weight. These compounds are the products of the secondary metabolism of plants.

In particular, (+) - catechin in its monomeric form is directly obtained from the extract of Wncaria Gambir.

Such a composition is already known, for example, from US Pat. No. 4,285,964 in the context of the treatment of chronic degenerative diseases of connective tissues. Among these degenerative diseases, the most well known and widespread in humans are, for example, osteoarthritis, chondromalacia and periodontosis.

According to US Pat. No. 4,285,964, the composition comprising a monomeric (+) - catechin compound and at least one basic amino acid is a drug in which the active substance is monomeric (+) - catechin

US 4,285,964 is primarily directed to an injectable composition. However, this document extrapolates in the process the injectable composition aforesaid to obtain an oral formulation by drying the injectable composition.

The present invention relates to a new use of the oral composition mentioned at the beginning for the curative treatment and / or preventive cancer, preferably hepatocellular, said monomeric (+) - catechin having a molar equivalence ratio relative to said at least one basic amino acid or a basic amino acid derivative (or a precursor amino acid) between 1: 1 and 1: 2.5.

The use of monomeric (+) - catechin for the treatment of cancer in mammals is known from the article by Weynant MJ, Carothers AM, Dannenberg AJ, and Betragnolli MM, published in 2001 in Cancer Research, Vol. 61, p. 1.8.

This article describes the treatment of intestinal tumors in mice with pure monomeric (+) - catechin administered orally, and thus certainly not associated with one or more amino acids. In particular, this article states that because of its high oral bioavailability, monomeric (+) - catechin is a promising active agent for the treatment of a wide variety of epithelial tumors in mammals, preferably in humans. To be human.

Unfortunately, if this article stops promising conclusions, these last remain hypothetical insofar as it does not demonstrate the transposition of the results of the mouse in the man.

In the context of the present invention, it has been observed quite surprisingly that the composition based on monomeric (+) - catechin and at least one basic amino acid or at least one derivative of an acid The basic amine, when administered orally, allows treatment and prevention, preferably improved, of cancer in the mammal, and in particular in humans.

The anticancer action is explained by the properties, still unknown until now, of the composition according to the invention which are the following:

a stabilizing action of the membranes;

protective properties of the connective tissue weft surrounding mammalian organs; and - a directly protective action of the gastric mucosa known to be subject to carcinoid ulcers and tumors.

Furthermore, as it is indeed demonstrated by the applicants, the presence of said at least one amino acid (or said at least one derivative or amino acid precursor), in the equivalence ratio as claimed, makes it possible to exacerbate the the anticancer action of monomeric (+) - catechin unexpectedly.

Preferably, said molar equivalence ratio is between 1: 1 and 1: 2.

Advantageously, said molar equivalence ratio is a ratio of 1: 1 or 1: 2.

Preferably, said molar equivalence ratio is greater than or equal to 1: 1, in particular greater than 1: 1.

Advantageously, said molar equivalence ratio is less than or equal to 1: 2.5.

In particular, said molar equivalence ratio is less than 2.5, more particularly less than or equal to 1: 2.

Preferably, said molar equivalence ratio is less than 2.

Advantageously, said molar equivalence ratio is less than or equal to 1: 2.5.

In particular, said molar equivalence ratio is less than 1: 2.5, more particularly less than or equal to 1: 2.

Preferably, said molar equivalence ratio is less than 1: 2.

Alternatively, the molar equivalence ratio is between 1: 1.5 and 1: 2.5, preferably between 1: 1.5 and 1: 2.

Advantageously, said molar equivalence ratio is greater than or equal to 1, 00: 1, 00 and less than or equal to 1, 00: 2,50. Very advantageously, said molar equivalence ratio is greater than or equal to 1.00: 1, 00 and less than or equal to 1.00: 50.

Preferably, said molar equivalence ratio is greater than or equal to 1.00: 1, 50 and less than or equal to 1.00: 2.00.

Preferably, said molar equivalency ratio is greater than or equal to, 00: 1, 50 and less than or equal to 1.00: 2.50.

Preferably, said composition is used in the form of a (+) - catechin complex and at least one basic amino acid or at least one derivative of a basic amino acid, said complex having an equivalence ratio molar amount of said monomeric (+) - catechin with respect to said at least one basic amino acid or said at least one basic amino acid derivative is between 1: 1 and 1: 2.5 (hereinafter referred to as a complex [ C: AA / 1: 1 - 1: 2.5]).

Preferably, said molar equivalence ratio is between 1: 1 and 1: 2.

Advantageously, said molar equivalence ratio is a ratio of 1: 1 or 1: 2.

Preferably, said molar equivalence ratio is greater than or equal to 1: in particular greater than 1: 1.

Advantageously, said molar equivalence ratio is less than or equal to 1: 2.5.

Preferably, said molar equivalence ratio is less than 2.

Advantageously, said molar equivalence ratio is less than or equal to 1: 2.5.

In particular, said molar equivalence ratio is less than

1: 2.5, more particularly less than or equal to 1: 2. Preferably, said molar equivalence ratio is less than 1: 2.

Alternatively, the molar equivalence ratio is between 1: 1, 5 and 1: 2.5, preferably between 1: 5 and 1: 2.

Advantageously, said molar equivalence ratio is greater than or equal to 1, 00: 1, 00 and less than or equal to 1, 00: 2,50.

Most preferably, said molar equivalence ratio is greater than or equal to 1.00: 1, 00 and less than or equal to 1.00: 1, 50.

Preferably, said molar equivalence ratio is greater than or equal to 1.00: 1, 50 and less than or equal to 1.00: 2.50.

Preferably, said at least one basic amino acid is lysine.

The use of the [C: AA / 1: 1 - 1: 2.5] complex in the treatment and prevention of oral cancer is made possible by the high oral bioavailability of (+ catechin when complexed with at least one basic amino acid or at least one derivative, or a precursor, of a basic amino acid, which property has not yet been disclosed.

It is believed that the presence of said at least one basic amino acid linked to the monomeric (+) - catechin allows the complex to easily cross the intestinal wall, which results in a proportion of free (+) - monomeric catechin in the blood higher.

In their article, Weynant M. J. and co. do not define what they mean by high bioavailability, especially orally.

From the results presented in the context of the present invention, it is observed that the high oral bioavailability of one gram of complex monomeric (+) - catechin in the form of a complex reaches a value of at least 900 ng h / ml (54000 ng min / ml) in humans. In view of the results of the present invention, therefore, bioavailability in humans, a bioavailability of at least 900 ng h / ml (54000 ng min / ml) for oral administration of one gram.

The results obtained by the inventors of the present patent application show that the bioavailability measured in man for one gram of (+) - catechin ingested in the form of monomeric (+) - catechin complex and at least one acid basic amine in a molar equivalence ratio of between 1: 1 and 1: 2.5 is at least 900 ng h / ml (54000ng min / ml).

As an illustration, it is observed in the context of the present invention that the oral bioavailability in humans of (+) - catechin ingested in the form of monomeric (+) - catechin complex is much greater [1263 + 88 ng h / min (75780 ng / ml) for 0.920 g of monomeric (+) - catechin ingested as 5 g of complex] to that of monomeric (+) - catechin ingested alone [832 + 150 ng h / ml (49920 ng min / ml) for an equivalent amount of 0.920 g of an oral intake of pure monomeric (+) - catechin], ie + 52% increase in bioavailability thanks to the complex.

This characteristic is all the more unexpected since it has been demonstrated in the context of the present invention that pure monomeric (+) - catechin has a solubility in water 400 times lower than that measured when it is solubilized under a complex form formed with at least one basic amino acid or at least one derivative of a basic amino acid.

Indeed, the solubility of the lysine salts of (+) - catechin reached at 400g per liter of water while the (+) - catechin itself under the same conditions has a solubility of 0.9g per liter. .

Two other important advantages are to be noted.

Firstly, the use of (+) - catechin administered orally in the form of a [C: AA / 1: 1 - 1: 2.5] complex gives a maximal piasmatic concentration of free (+) - monomeric catechin c (max) more than doubled compared to that obtained with the same dose (+) - pure monomeric catechin ingested under the same conditions: c (max) of 571 ng for 1 g of (+) - catechin ingested in the form of a complex against 280 ng for 1 g of (+) - catechin monomer ingested as is, an increase of + 103%.

Second, these peak plasma concentrations more than doubled are reached [Γ (max)] more than twice more rapidly when (+) - catechin is ingested as a complex [C: AA / 1: 1 - 1: 2, 5] rather than as monomeric (+) ~ catechin alone: T (max) 30 min versus 80 min, an increase of + 166%.

All these characteristics are serious advantages particularly in the case of a drug for the prevention and / or treatment of cancer. The doses to be administered being in this case often very high and to take in the long term it is interesting not only to be able to reduce them thanks to the complex [C: AA] but also to obtain directly after taking this complex of the blood levels more than doubled compared to those that one would obtain with the molecule alone.

Since (+) - catechin is generally well tolerated, the only complaints at high doses are stomach heaviness which could then be eliminated or at least reduced by the use of the [C: AA / 1: 1 - 1: 2.5] as part of a long-term treatment.

In addition, it is demonstrated in the present invention that the use of the complex according to the invention orally for the treatment and prevention of cancer has been proven to be at least as effective as a use of said composition by injection.

Indeed, it is demonstrated in the present invention for the [C: AA / 1: 1 - 1: 2.5] complex, an oral bioavailability which is greater by a factor of 1, 90 than that by injection, in the rat.

It is further demonstrated that (+) - catechin, once injected, is rapidly metabolized and eliminated from the body (within one hour after the injection, nearly 90% of the free monomeric (+) - catechin content was removed from the blood). In the case of oral absorption, a peak of free monomeric (+) - catechin concentration in the blood is observed within one hour after absorption, and a 50% decrease in this content after two hours. hours.

This means that the oral assimilation makes it possible to maintain a proportion of free (+) - monomeric catechin in the blood delayed in time and thus of an improved anticancer action.

Finally, the results obtained in the rat with regard to cancer treatment by oral intake of the complex according to the invention are in good agreement with those obtained in humans, the transposition of the results in the rat to the situation in the Man is therefore proved.

In rats ingesting 150 mg / kg of (+) - catechin chiorhydrolysinate, the free (+) - catechin bioavailability in the blood is 132349 ng min / ml (2206 ng h / ml) whereas in humans the ingestion of 1.5 g of the same (+) - catechin chiorhydrolysinate gives a bioavailability of 75780 ng min / ml (1263 ng h / ml). Considering the fact that the metabolism is accelerated in the rat we find, for bioavailability studies mentioned later, in the situation of results transposable to humans (see Tables 4 and 2).

The present application mentions that monomeric (+) - catechin is an alternative to heavier treatments such as radiation or chemotherapy, in the treatment of cancer, particularly hepatocellular cancer.

Preferably, said at least one basic amino acid is lysine.

In a preferred embodiment of the present invention, said complex is a complex comprising a lysine molecule for a monomeric (+) - catechin molecule. In an advantageous embodiment of the present invention, said complex is a complex comprising an arginine molecule for a monomeric (+) - catechin molecule.

In a particular embodiment of the present invention, said complex is a complex comprising two lysine molecules for a monomeric (+) - catechin molecule.

The (+) - catechin complex with two lysines is by far the best combination in all experiments to improve the bioavailability of monomeric (+) - catechin orally

In another particular embodiment of the present invention, said complex is a complex comprising two arginine molecules for a monomeric (+) - catechin molecule.

In another preferred form, said complex is a complex comprising a lysine molecule and an arginine molecule for a monomeric (+) - catechin molecule.

Preferably, the composition according to the invention is characterized in that said complex is in salt form of said complex, said salt comprising said complex, said complex comprising at least one proton derived from at least one acid and at least one anion derived from said at least one acid, said salt having said proton in equimolar amount relative to that in basic amino acid or basic amino acid derivative.

In this way, the complex salt is defined by the following formulas:

- [C: AA: H ⁺ : A71: x: x: x], in the case of a monofunctional acid such as HCl; or

- [C: xAA: xH ⁺ : x / yA ^{y ~} ], in the case of an acid,

H ⁺ representing the proton of the acid,

A ^" representing the anion of the acid,

x represents the number of molar equivalents in AA, y representing the load carried by the anion. Advantageously, said at least one acid is preferably chosen from ascorbic acid, acetic acid, citric acid and hydrochloric acid. Very advantageously, said acid is ascorbic acid.

The role of ascorbic acid is that of a vitamin supplement. Moreover, since this acid is also an antioxidant, it plays a synergistic antioxidant role compared to that of (+) - catechin.

This addition of an acid also makes it possible to improve the bioavailability of (+) - catechin orally. This observation is explained by the more stable state of (+) - catechin in acid medium.

In a particular embodiment, said composition is characterized in that it further comprises one or more biocompatible excipients.

Preferably, the content of (+) - catechin complex with said basic amino acid or said at least one derivative of a basic amino acid is between 15 and 95% by weight relative to the total weight of said composition, preferably between 60 and 90%, advantageously 65 to 85%.

Preferably, the composition is in liquid form or in solid form, preferably water-soluble, in particular in the form of powder, tablet, or tablet.

Advantageously, the composition in liquid form has, in a solution 0.01 molar at 25 ° C, a pH equal to or greater than 3 (that is to say the theoretical pH of a salt [C: Lys: H ⁺ : A ^" ] in a 1: 0.5 molar equivalence ratio), preferably between 4 and 1 1, advantageously between 4.5 and 9.

Optionally, the composition according to the invention is a solid composition, with a pH equal to or greater than 3, preferably between 4 and 11, advantageously between 4.5 and 9, when it is dissolved in 0.01. M at 25 ° C, including monomeric (+) - catechin and said at least one basic amino acid or said at least one basic amino acid derivative, and optionally at least one acid, as precursors of said complex or salt of the complex, as a combined preparation for simultaneous oral use, said complex forming oral post-administration.

The solid composition according to the invention comprises monomeric (+) - catechin and said at least one basic amino acid or said at least one basic amino acid derivative in a molar equivalence ratio of between 1: 1 and 1: 2 5.

Advantageously, said molar equivalence ratio is less than or equal to 1: 2.5.

Preferably, said molar equivalence ratio is less than 1: 2.

Preferably, said molar equivalency ratio is greater than or equal to, 00: 1, 50 and less than or equal to 1.00: 2.00.

Preferably, said molar equivalence ratio is greater than or equal to 1.00: 50 and less than or equal to 1.00: 2.50.

The monomeric (+) - catechin and said at least one basic amino acid, or said at least one basic amino acid derivative, are precursors which participate, in an aqueous medium, in a complexation reaction to form the complex according to the invention. invention. In this case, the complex is formed in vivo in the gastrointestinal tract in contact with water saliva or water contained in the stomach bowl.

Alternatively, the composition according to the invention is a solid composition comprising monomeric (+) - catechin and said at least one basic amino acid or said at least one basic amino acid derivative, and optionally at least one acid, as precursors of said complex or salt of the complex, as a combined preparation for simultaneous oral use in solution in an aqueous phase, said complex forming oral pre-administration, said monomeric (+) - catechin and said at least one basic amino acid or said at least one basic amino acid derivative being present in a molar equivalence ratio of from 1: 1 to 1: 2.5.

Preferably, said molar equivalence ratio is greater than or equal to 1: 1, in particular greater than 1:

Advantageously, said molar equivalence ratio is less than or equal to 1: 2.5.

Preferably, said molar equivalence ratio is less than 1: 2.

Advantageously, said molar equivalence ratio is greater than or equal to 1, 00: 00 and less than or equal to, 00: 2,50.

Very advantageously, said molar equivalence ratio is greater than or equal to, 00: 1, 00 and less than or equal to 1, 00: 1, 50.

Preferably, said molar equivalence ratio is greater than or equal to 1.00: 50 and less than or equal to 1.00: 2.00.

Preferably, said molar equivalence ratio is greater than or equal to 1.00: 1, 50 and less than or equal to 1.00: 2.50. In this way, the complex is formed as soon as the composition is put into aqueous solution, that is to say before oral administration.

Preferably, said oral composition is characterized in that it is used for the prevention and treatment of a variety of forms of cancer, including chronic or non-chronic leukemias, liver, prostate, breast, breast cancer uterus, testes, bladder, kidneys, lungs, bronchi, bones, mouth, esophagus, stomach, pancreas, colon-rectal, lymphoma, myeloma but not exclusively.

Indeed, it has been demonstrated in the context of the present invention that said oral or injectable (parenteral) composition prevents tumors from spreading, helps the body to heal after surgical removal of cancers and reduces the toxic effect of others. drugs used in chemotherapy. It is further demonstrated here that said composition also reduces the destruction of connective tissue and in particular that of collagen fibers during radiotherapy.

Other embodiments of the composition based on the complex according to the invention are indicated in the appended claims.

The present invention also relates to the use of a complex-based oral therapeutic composition or complex salt according to the invention for the treatment and / or prevention of cancer.

The present invention also relates to the use of the composition according to the invention, for the manufacture of a therapeutic oral composition for the treatment and prevention of cancer in the mammal, and in particular in humans.

Other features and advantages of the invention will become apparent from the description given below, by way of non-limiting example and with reference to the examples (and in particular the comparative examples) described below. Figure 1 illustrates the NMR spectra of the monomeric (+) - catechin complex and lysine for a 1: 2 molar equivalence ratio (a) and a 1: 1 molar equivalence ratio (b).

Figure 2 illustrates the NMR spectra of the monomeric (+) - catechin and arginine complex for a 1: 2 molar equivalence ratio (a) and a 1: 1 molar equivalence ratio (b).

FIG. 3 illustrates the evolution of plasma concentrations (ce) in free (+) - catechin measured in humans in ng / ml over time T (hour) after the assimilation of (+) - catechin hydrochloride (rich in (+) - monomeric catechin at 61% by weight, group A) and a gram of pure monomeric (+) - catechin (group B).

Figure 4 illustrates the X-ray diffraction pattern (powder) of the monomeric (+) - catechin complex and lysine for a 1: 2 molar equivalence ratio.

FIG. 5 illustrates the evolution of the free monomeric (+) - catechin concentration in the plasma as a function of the molar equivalence ratio between monomeric (+) - catechin and Lysine: 1:

0; 1: 1, 1: 2, 1: 2.5, 1: 3, and 1: 5, for a complex salt [C: Lys: HCl] (see Table 14).

In the description, Examples 1 to 6 and Comparative Examples 1 to 5 relate to the results of oral bioavailability and anticancer activity obtained in the mammal (rat and human) for the composition based on the [C: AA / 1: 1 - 1: 2.5] according to the invention.

Comparative Examples 6 to 10 describe the oral bioavailability results obtained in the rat for the composition based on the mixture of monomeric (+) - catechin and at least one basic amino acid or of at least one derivative of a basic amino acid in a molar equivalence ratio of between 1: 1 and 1: 2.5, preferably between 1:

1 and 1: 2. In the context of the present invention, the equivalence between the results of the tests obtained in the rat and in humans has also been demonstrated. It is therefore proved that the results obtained in the rat are indeed reproduced in humans.

In the following examples, with the exception of the results in Table 7b, the (+) - catechin contents in the blood correspond to the levels of monomeric free (+) - catechin.

Material and method: measurement of bioavailability

Bioavailability is the proportion of free (+) - monomeric catechin found in the body relative to the amount initially administered.

In the context of the present invention, and without limitation, (+) - catechin can be absorbed in the form of the [C: AA] complex or in the form of pure monomeric (+) - catechin, that is to say i.e. not associated with at least one basic amino acid or at least one basic amino acid derivative.

In the context of the present invention, it is first of all necessary to distinguish, the (+) - catechin having been absorbed, the presence in the blood of free monomeric (+) - catechin, that is to say in a non-conjugated form, conjugated (+) - catechin, i.e., which has been derivatized by the mammalian metabolism.

The derivatized monomeric (+) - catechin arises from the cycle of elimination of free monomeric ia (+) - catechin in blood by metabolism (for example and without limitation, by the enterohepatic cycle).

The elimination of active substances (or molecules) foreign to the organism resulting from the joint action of several processes. It understands the metabolic capacity of different organs, in the first place of the liver, and excretion in all its forms, in particular renal (urine) but also hepatic (bile).

This elimination metabolism predicts the derivation of monomeric (+) - catechin by a well - known biotransformation cycle that involves two metabolic phases according to enzymatic transformation processes. Thus, phase I reactions and phase II reactions are distinguished:

the phase I reactions comprise the oxidation reactions which are predominantly localized in the hepatic microsomes; reduction reactions that are much less frequent and less well explored; and the hydrolysis reactions that are a common metabolic pathway that occurs in the liver, in different tissues and even in the plasma; and then

the derivatives resulting from the phase I reactions are then conjugated. It is this conjugation that constitutes the phase II reactions, including glucuronecrombination, which involves the conjugation of these derivatives with glucuronic acid.

In this context, a specific proportion (or content) of free (+) - monomeric catechin in the blood after oral administration of monomeric (+) - catechin, corresponds to a determined bioavailability.

- Operating mode:

The experimental results described below were obtained on the basis of a study in healthy humans and healthy Wistar rats weighing approximately 250 grams.

For rat studies, individuals were housed in groups of up to 4 individuals in a cage in sawdust litter at an ambient temperature of 20 ° C to 25 ° C with 12-hour illumination. 24 hours. A period of acclimatization was respected before starting the experiments. During the experimental study, the rats had access to standard commercial feed and ad libitum water. Rats were fasted overnight prior to administration of the source to the active product, with the understanding that the active product is monomeric (+) - catechin (or other polyphenols: quercetin and EGCG ).

The rats were orally administered with a volume of 5 ml of a solution of active product.

With respect to the sampling of blood samples in rats and humans, the blood was collected in EDTA-coated tubes and centrifuged at 3000 rpm (rotation per minute) at room temperature. for 45 minutes, and then for 15 minutes at a temperature of 4 ° C. the plasma was then collected and stored at -70 ° C before analysis.

The analytical technique (LC-MS / MS for Liquid Chromatography coupled to tandem Mass Spectrometry) for the measurement of active substance in the blood is inspired by the method described by Mata-Bilbao et al. Published 2007 in the Journal of Agricultural and Food Chemistry, Vol. 55, page 8857.

Regarding the methodological development, the reference plasmas were collected internally, from rats and cows not treated with the active substance, and then stored at -20 ° C.

The free (+) - catechin was extracted from the plasma with a solution of phosphoric acid, EDTA and ascorbic acid to be subsequently purified by SPE (for solid phase extraction) in particular, it is a Oasis ™ HLB extraction and analyzed by LC-MS / MS. Quantification was performed using a standard calibration procedure with internal standard (IS) of (+/-) - ^{catechin-2,3,4-3} C3.

In this context, the free (+) - catechin content includes not only the monomeric free (+) - catechin content isolated from the plasma, but also its isomeric forms which result from the isomerization of monomeric free (+) - catechin related to the conditions of extraction of the free (+) - catechin from said plasma.

The procedure is identical with respect to the extraction and quantification of quercetin or free ECGC in the blood.

With regard to the extraction and quantification of total (+) - catechin, the procedure is the same as that applied for free (+) - catechin, except that an additional step purification by SPE is performed. This additional step consists in treating the sample with a digestive solution of arylsulfatase and glucoronidase, in order to extract the active substance from the plasma cells.

The total (and) concentration in (+) - catechin (free or derivatized) is calculated by measuring, for example by the trapezoid method, the area under the evolution curve of the plasma concentrations (ce) measured in ng / ml over time after oral administration of the (+) - monomeric catechin source.

- Standards An internal standard solution of 1 mg / ml (methanol) of

(+) - catechin was prepared from stock (+) - catechin and then stored at -20 ° C.

Catechin-C13 (reference: 719579, purity 99.3% by weight) produced by Sigma Aldrich, was used as SI.

The SI solution for the quantification of (+) - catechin

(free and total) was prepared by diluting 5 ml of the stock solution in methanol in a final volume of 10 ml. This Si solution was then stored at -20 ° C. - Methods a) Extraction protocol for the analysis of free monomeric (+) - catechin in plasma

a transfer of 500 μΙ of homogenized plasma into a 15 ml flask;

an addition of 50 μl of SI (10 ppm);

an addition of 180 μl of an antioxidant solution (20 mg / ml of ascorbic acid and 1 mg / ml of EDTA) and 10 μl of orthophosphoric acid;

a vortex mixture for 2 minutes;

an addition of 1.5 ml of water for dilution to obtain an extraction mixture;

an extraction applied to the solid phase extraction mixture under Water Oasis ™ HLB according to the standard protocol well known to those skilled in the art and adaptable to the present procedure;

drying the eluate by evaporation at 45 ° C. under an inert atmosphere;

solubilization of the dry extract in acetonitrile followed by centrifugation at 3000 rpm for 10 min; and

HPLC analysis (for high performance liquid chromatography). (b) Extraction protocol for the analysis of total monomeric (+) - catechin in plasma

a transfer of 500 μΙ of homogenized plasma into a 15 ml vial;

an addition of 50 μl of SI (10 ppm);

an addition of 180 μl of an antioxidant solution (20 mg / ml of ascorbic acid and 1 mg / ml of EDTA) and 10 μl of orthophosphoric acid; a vortex mixture for 2 minutes;

- an addition of 750 μ! 0.2 M acetate buffer solution

(pH 4.8);

an addition of 5 μl of a mixture of helix pomatia which follows a step of digestion of the solution for 2 hours at 55 ° C .;

centrifugation at 4000 rpm for 10 minutes to obtain an extraction mixture;

drying the eluate by evaporation at 45 ° C. under an inert atmosphere;

an HPLC analysis (for high performance iiquid chromatography). c) Extraction - Water Oasis HLB - Activation Solution:

1 ml of methanol;

o 1 ml of water; and

1 ml of a DMF solution (70% by volume) containing 0.1% (by volume) of formic acid.

- Washing solution:

o E ml of water;

1 ml of a solution of methanol (30% by volume); o 1 ml of ethyl acetate.

- Elution solution

5 ml of a mixture of ethyl acetate and methanol in a molar equivalence ratio of 1: 2. d) LC-MS / MS analysis

Liquid Chromatography (LC) column: Alltima C18 5u;

HPLC aqueous mobile phase: formic acid (concentrated to 0.1% by volume);

mobile phase B HPLC: acetonitrile solution containing formic acid at a level of 0.1% by volume;

flow rate: 0.6 ml / min;

oven temperature: 30 ° C; and

injection volume: 50 μΙ;

elution program:

Time A B

(min) {% by volume) (% by volume)

0,00 95 5

0.50 95 5

4.00 100 0

4.50 100 0

5.50 95 5

8.00 95 5

• Mass spectroscopy (MS)

- ESI ionization in negative mode with a desolvation temperature of 400 ° C;

- source temperature: 120 ° C;

flow of the cone gas: 150 l / h;

- desolvation gas flow: 1000 l / h. Synthesis of the complex according to the invention

The complex corresponds to a molecular construct in which the monomeric (+) - catechin is bound to said at least one amino acid, or to said at least one basic amino acid derivative, by hydrogen bridge bonds.

This means that when the complex does not dissociate in aqueous solution.

The monomeric (+) - catechene corresponds to a polyphenol present in the form of a monomer.

The basic amino acid has a radical which is positively charged at neutral pH.

The basic amino acid derivative is defined in the context of the present invention as a molecule derived from a basic amino acid, and which results from one or more chemical transformations operated on this amino acid.

Preferably, the complex (in salt form or not) comprises monomeric (+) - catechin and at least one amino acid precursor which is a molecule intended to be converted into an amino acid or an amino acid derivative. after oral administration.

For example, and not limited to, the amino acid precursor may be a glucuronide or an amino acid glucuronoside, which, once absorbed, is converted by the organism into amino acid, by the action of the amino acid precursor. β-glucuronidase enzymes.

Example 1: Preparation of a monomeric (+) - catechin complex and lysine 1a. Complex (+) - monomeric catechin and lysine in a ratio of 1: 2 molar equivalence Monomeric (+) - catechin, extracted from Gambir ncaria by one of the methods well known to those skilled in the art, is ground and then dried at 50 ° C under vacuum for 30 minutes.

After this drying step, the (+) - catechin extracted comprises at least trace water.

Two equivalents of lysine are then successively added to the (+) - catechin with stirring until dissolved in distilled water in which helium is bubbled. The solution is then heated to a temperature between 40 ° C and 45 ° C and stirred for about one hour until complete dissolution of the two equivalents of lysine and is then put in the fridge 16h.

Alternatively, the (+) - catechin may be added to a solution of two equivalents of lysine brought to a temperature between 40 ° C to 45 ° C with stirring.

The solution is then filtered on a beaker and washed with 50 ml of distilled water and then dried with evaporation of the water first at the rotavapor and then at the vacuum ramp (for 4 hours at a temperature of 50 ° C.).

The product obtained is not soluble in deuterated methanol but in deuterated water (D ₂ 0, solvent used for RN analysis). The NMR spectrum obtained is illustrated in FIG.

Upon reading the NMR spectrum, it is observed that the complex is formed of two moles of lysine per mole of monomeric (+) - catechin.

Moreover, the presence of the three peaks A, B and C on the spectrum shows that lysine is well linked to catechin. There is indeed a strong modification of the aromatic peaks of! A (+) - catechin with a disappearance of the peaks at 5.95-5.87 ppm and a poor integration of the peaks at the level of 6.50-7.00 ppm. This indicates that there is an interaction between lysine and aromatic cycles of (+) - catechin, at the level of phenolic groups, these interactions involving hydrogen bridge bonds.

X-ray diffraction spectra collected using a Siemens D5000 powder diffractometer with Cu Κα radiation (λ = 1, 542 A) were taken for the following compounds: monomeric (+) - catechin (JE143), a mixture (JECatLysH) of lysine hydrochloride, monomeric (+) - catechin, and protonated lysine (mixture C: Lys: HCl / 1: 2: 2), and three mixtures of monomeric (+) - catechin and non-lysine -protoned (JE149b, JE150, JE151). The data was recorded in a range of 5 ° to 60 ° in steps of 0.0167 °.

The spectra are illustrated in FIG. 4. As shown in FIG. 4a, the JECatLysH sample is associated with a DRX spectrum which does not appear to be an overlap of the spectra of monomeric (+) - catechin and of the hydrochloride of lysine, thus showing the formation of a complex and not a mixture of the two components. In particular, we note, among other things, the disappearance of the peaks at the angles of 31, 5 and 36 degrees of lysine in the spectrum of the complex

The spectra for the three mixtures of monomeric catechin (+) - catechin and non-protonated lysine (JE149b, JE150, JE151) show no crystallinity index for these compositions, which indicates that for these references JE149b, JE 50, JE151 there is formation of a composition in the amorphous crystalline state, contrary to what is observed for the mixture JECatLysH for which it has been identified a crystal lattice that does not correspond to the superposition of the spectra of lysine hydrochloride and monomeric (+) - catechin.

1 b. F +) - Monomeric Catechin Complex and Lysine in 1: 1 Molar Equivalence Ratio

The monomeric (+) - catechin complex with lysine in a 1: 1 molar equivalence ratio was synthesized according to the same protocol as that used for the synthesis of the lysine complex. Example 1a but decreasing by a factor 2 the amount of lysine such that there is an excess of (+) - catechin which promotes the formation of said complex at a 1: 1 molar equivalence ratio by the lysine deficiency.

The NMR spectrum drawn in deuterated water is illustrated in FIG.

1 b. On reading the NMR spectrum, it is observed that the complex is formed of one mole of lysine per mole of monomeric (+) - catechin

Example 2 Preparation of a Complex of (+) - Monomeric Catechin and Arginine

2a. Complex of (+) - monomeric catechin and arginine in a ratio of 1: 2 molar equivalence

The monomeric (+) - catechin complex with arginine was synthesized according to the same protocol used for the synthesis of the lysine complex of Example 1a.

On reading the NMR spectrum illustrated in FIG. 2a, it is observed that the complex is formed of two arginine molecules linked by hydrogen bridge bonds to a monomeric (+) - catechin molecule.

2b. (-T-) - monomeric catechin and arginine complex in a 1: 1 molar equivalence ratio

The monomeric (+) - catechin complex with arginine was synthesized according to the same protocol used for the synthesis of the lysine complex of Example 1b.

Upon reading the NMR spectrum of said complex shown in FIG. 2b, it is observed that the complex is formed by an arginine molecule linked by hydrogen bridge bonds to a monomeric (+) - catechin molecule.

Oral bioavailability of the complex according to the invention Example 3 Measurement of the Oral Bioavailability of Monomeric (+) - Catechin Chlorhydrolysinate (or Complex Salt C: Lys: HCM in Humans

1.5 g of a monomeric (+) - catechin complex and at least one basic amino acid: monomeric (+) - catechin chlorhydrolysinate. From the [C: Lys] complex obtained according to protocol 1b, the monomeric (+) - catechin is present in a proportion of 61% by weight relative to the total weight of said complex (ie 0.92 g for 1.5 g ), the monomeric (+) - catechin hydrochlorrolysinate (complex salt [C: Lys: HCl]) is synthesized by neutralization of said [C: Lys] complex with HCl added equimolar to that of said complex.

In this way, a complex salt in which the lysine is bound to the proton (Lys-H ⁺ ) from HCl and in which the chloride (anion CI ^" ) is free in solution and does not interact with the complex [C: Lys-H ⁺ ].

This complex salt is administered to a group A of 5 healthy volunteers.

The free monomeric (+) - catechin content in the blood was measured for group A volunteers over time after taking 1.5 g monomeric (+) - catechin chlorhydrolysinate containing 0.92 g of (+) ) monomeric catechin (Table 1).

Table 1: Plasma concentration (ce) of free monomeric (+) - catechin (in nq / ml) for group A as a function of time T (hour)

Group

T (h) A

this (ng / ml)

0.5 524 + 30

1,487 + 47 2,328 + 35

3 173 + 38

4 78 + 24

6 16 ± 2

Table 2: Oral bioavailability evaluation parameters calculated from the plasma concentration (ce) concentration curves of free (+) - monomeric catechin (in ng / ml) for group A as a function of time T (hour) )

FIG. 3 illustrates the evolution of the plasma concentrations (ce) measured in ng / ml over time T (hour) after oral administration of (+) - catechin hydrochlorrolysinate (curve A), this curve is extrapolated from the data listed in Table 1.

The area measured, for example by the well known trapezium method of the literature, under the curve indicates the total concentration (and) of free monomeric (+) - catechin assimilated in the plasma measured over a period of six hours starting from ingestion of (+) - catechin as a complex formed with chlorhydrolysinate. This parameter makes it possible to calculate, from the data of Table 1, the bioavailability of (+) - catechin expressed in ng h / ml. And is 1263 + 88 ng h / ml for (+) - catechin hydrochlorrolysinate.

In FIG. 3, the maximum concentration c (max) corresponds to the peak of the curve. For the group that received the [C: Lys: HCl] complex salt, the c (max) reached 525 ng / ml. This maximum concentration is at a time T (max) of 0.5 h for group A having received the monomeric (+) - catechin complex.

Comparative Example 1: Measurement of the Oral Bioavailability of Pure (*) - Monomeric Catechin in Humans

A dose of 1 g of pure monomeric (+) - catechin is administered to a group B of 5 healthy volunteers.

Free monomeric (+) - catechin content in the blood was measured for group B volunteers over time after (+) - catechin intake. The results are shown in Table 3.

Table 3: Plasma concentration (ce) of free monomeric (+) - catechin (in nq / mi) for group B as a function of time T (hour)

Table 4: Oral bioavailability evaluation parameters calculated from the plasma concentration (ce) concentration curves of free (+) - monomeric catechin (in ng / ml) for group B as a function of time T (hour) )

Group

B T (max) (h) 1, 20

and (ng h / ml) (ng min / ml) 904 + 163 (54240)

c (max) (ng / ml) 280

Figure 3 illustrates the evolution of plasma concentrations (ce) measured in ng / ml over time T (hour) after oral administration of pure (+) - catechin (curve B). This curve is extrapolated from the data listed in Table 3.

The area measured under the curve indicates the total concentration (and) of free monomeric (+) - catechin assimilated in the plasma measured over a period of six hours from ingestion of pure (+) - catechin. This parameter makes it possible to calculate, from the data of Tables 1 and 3, the bioavailability of ia (+) - catechin expressed in ng h / ml. La and is calcined at 1263 + 88 ng h / ml for 1.5 g of (+) - catechin hydrohydrolysinate containing 0.92 g of pure (+) - catechin. It is calculated at 904 + 163 ng h / ml for 1 g of pure (+) - catechin, ie at 832 +150 ng h / ml for 0.92 g of pure (+) - catechin, corresponding to its dose ingested with salt. complex [C: Lys: HCl] (see Example 2 according to the invention), an improvement in bioavailability of at least 52%.

In FIG. 3, the maximum concentrations c (max) correspond to the peaks of the curves. For the group that has received 1 g of pure monomeric (+) - catechin, the c (max) is calculated at 280 ng / ml, ie 258 ng / ml for 0.92 g of pure (+) - catechin corresponding to the dose of (+) - catechin ingested with complex salt [C: Lys: HCl]. For the group that received the [C: Lys: HCl] complex salt, the c (max) reached 525 ng / ml, which corresponds to a 103% increase over pure (+) - catechin. These maximum concentrations are reached respectively at a time T (max) of 20 h for group B and 0.5 h for the group which has been treated with the monomeric (+) - catechin complex. From this first comparative example, it is shown that the (+) - catechin complex, and in particular (+) - catechin hydrohydrolysinate significantly (+ 52%) improves the oral bioavailability of (+) ~ catechin monomeric compared to its pure form. The rapid passage of monomeric (+) - catechin into the blood (and then present in free form in the plasma), measured by the parameter T (max), as well as the maximum concentration, c (max), are also very significantly increased: + 66% and + 103%, respectively, compared with the intake of monomeric (/ +) - catechin in its pure form.

Comparative Example 2: Measurement of the oral bioavailability of pure monomeric (+) - catechin and the (+) - catechin and lysine complex in rats

A dose of 100 mg (per kg of body weight) of pure monomeric (+) - catechin (CP) or a dose of (+) - catechin lysinate equivalent to 100 mg of (+) - catechin was administered in each individual of a sample of 5 Wistar rats.

Oral bioavailability assessment parameters are given in Table 5 for different sources of (+) - catechin: CP, or different lysine complexes.

Table 5: Oral bioavailability evaluation parameters calculated from the plasma concentration (ce) concentration curves for free (+) - monomeric catechin (in ng / ml) for each source of (+) - catechin based time T (minute)

Source of (+) - monomeric catechin

CP [C: Lys [C: Lys: HCL [C: Lys

h: 1] / 1: 1: 1] l \: 2] T (max) (min) 60 60 60 120 c (max) (ng / ml) 716 1127 955 1547 and (ng min / ml) 96238 1 12422 32349 186348

Act (%) 0 +17 +36 +94

In this table, the Act (expressed in%) corresponds to the measurement of the difference between the and obtained with each complex and the and measured for the pure monomeric (+) - catechin, brought back to the bioavailability value for the CP. By way of illustration, the Act calculated for the [C: Lys / 1: 1] complex is obtained as follows:

100 x [(112422 - 96238) / 96238] = 17% The best parameter values are achieved for the complex [C: Lys / 1: 2] for which an oral bioavailability value of nearly 1, 9 10 ⁵ ng min / ml is reached, which corresponds to a 94% increase over pure catechin (+) - catechin.

In addition, the maximum concentration [C (max)] of catechin passed into the blood is increased by 116%, the peak giving this C max is 120 min [T (max)] against 60 min for the other sources, which has also has the effect of favorably increasing blood levels in (+) - monomeric free catechin over time, confirming the delayed action of the active substance and therefore an improved anticancer action.

These data correspond to what we had found in humans by comparing the oral intake of pure (+) - catechin (Table 4) to that of complex salt [C: Lys: HCL, 1: 1: 1] ( table 2). The bioavailabilities are indeed increased in the same proportions, + 52% in humans, + 36% in the rat. In the present example, in rats, we show that the [C: Lys / 1: 2] complex further increases the bioavailability of (+) - catechin orally. Comparative Example 3; measurement of oral bioavailability of pure monomeric (+) - catechine, f +) - catechin and arginine complex, and (+) - catechin and lysine complex in rats

A dose of 100 mg (per kg of body weight) of pure monomeric (+) - catechin (CP) or a dose of (+) - catechin complex equivalent to 100 mg of (+) - catechin was administered in each individual of a sample of 5 Wistar rats.

Oral bioavailability assessment parameters are given in Table 6 for different sources of (+) - catechin: CP, or different lysine or arginine complexes.

Table 6: Oral bioavailability evaluation parameters calculated from the plasma concentration (ce) concentration curves of free (+) - monomeric catechin (in ng / ml) for each source of (+) - catechin based time T (minute)

From these results, it is deduced that any basic amino acid (i.e. selected from lysine, arginine, and histidine) binding to (+) - catechin, and thus neutralizing acidity ortho-diphenol groups located on the nucleus of (+) - catechin, could have the same beneficial effect on the oral bioavailability of it.

Comparative Example 4: Measurement of oral bioavailability of pure monomeric (+) - catechin, f +) - catechin and lysine complex, at a molar equivalence ratio of 1: 1 and 1: 5, in the rat

A dose of 25 mg (per kg of body weight) of pure monomeric (+) - catechin (CP) or a dose of (+) - catechin lysinate equivalent to 25 mg of (+) - catechin was administered in each individual of a sample of 3 Wistar rats.

Oral bioavailability assessment parameters are given in Table 7a for different sources of (+) - catechin: CP, or different lysine complexes.

The parameters of T (max), c (max) and and (+) - total catechin present in the blood are given in Table 7b. Total (+) - catechin includes free monomeric (+) - catechin and monomeric {+) - catechin, which has been conjugated by the rat organism.

Table 7a: Oral bioavailability evaluation parameters calculated from the plasma concentration (ce) concentration of free (+) - monomeric catechin (in ng / ml) for each source of (+) - catechin based time T (minute)

Source of (+) - monomeric catechin

CP [C: Lys / 1: 2] [C: Lys / 1: 5]

T (max) (min) 30 60 60 c (max) (ng / ml) 154 173 74 and (ng min / ml) 21 145 24845 13770

Act (%) 0 + 7 -35 Table 7b: parameters of T (max), c (max) and of (+) - total catechin present in blood calculated from the plasma concentration (ce) curves of total (+) - catechin monomeric (in ng / ml) for each source of (+) - catechin as a function of time T (minute)

The complex [C: Lys / 1: 2] allows an increase in both levels of free and total plasma (+) - catechin while the complex [C: Lys / 1: 5] significantly decreases these levels compared to the (+) - pure catechin, that is to say, ingested without lysine.

The results of this example compared to the results shown in Table 5 show that the optimum in terms of oral bioavailability is indeed achieved for the [C: AA / 1: 2] complex, in the presence or absence of HCt. It should be noted that the presence of an acid favorably influences the oral bioavailability parameters (see Table 5), however, the presence of this acid is not essential to obtain an increased oral bioavailability.

Anticancer action of the complex according to the invention

Example 4: Measurement of the action of monomeric (+) - catechin chlorhydrolvsinate and monomeric (+) - catechin ascorbolysinate on the total incorporation into collagen of 3H-proline in the skin The stabilization of lysosome membranes prevents the release of proteolytic enzymes responsible for the degradation of the conjunctive matrix, including collagen. This degradation is at the root of the spread of metastatic cancer cells, whatever the type of cancer (Cell Communication and Signaling 2010, 8:22).

The skin is a tissue particularly rich in connective matrix and collagen fibers, which gives it all its elasticity.

The efficacy of (+) - catechin hydrochlorrolysinate and monomeric (+) - catechin ascorbolysinate administered orally, on the one hand on the total incorporation (on the whole skin) and on the other hand in the collagen of it, 3H-proline is demonstrated here.

To do this, a study was conducted in vivo on a batch of 24 female Wistar rats weighing 95 to 115 g, divided into two groups C and D, each of 12 rats. For each group, the radioactive 3H-hydroxyproline, whose specific activity is 13.6 Ci / 10 ^-3 mol, was administered to all the animals by intraperitoneal injection of proline-L- (5-3H) to a dose relative to the weight of the individuals of 1 mCi / kg, which represents a radioactive 3H-proiine activity of 100 pCi / individual.

Six rats from each group received monomeric (+) - catechin treatment by gavage at 100 mg / kg for 5 days before sacrifice. The other 6 rats not receiving monomeric (+) - catechin treatment are a control subgroup (ctr1). Group C received monomeric (+) - catechin hydrochlorrolysinate while group D received monomeric (+) - catechin ascorbolysinate.

Table 8: action of monomeric (+) - catechin in its complex forms (00 mg / kg) on the level (in dpm / mg) of total incorporation (IT) and in the collagen (IC) of 3H-hydroxyproline in the rat's skin Group

C D

Rate ctrl treated ctrl treated

IT 5620 + 6248 + 4864 + 51 12 +

186 124 231 259

IC 1 178 + 1343 + 963 + 1 1 17 +

39 48 42 49

In Table 8, the rate of incorporation is measured by the disintegration number of radioactive 3 H-hydroxyproline per minute (dpm) per mg dry mass. The higher the number, the higher the concentration of 3H-hydroxyproline.

The results in Table 8 show that catechin and the (+) - catechin hydrochloride complex stimulate the biosynthesis of connective tissue and particularly that of collagen.

In addition, this example, according to the invention, confirms the protection of the connective tissue in vivo by the oral absorption of complexes of (+) - monomeric catechin orally and therefore the protection of this frame, in particular against intrusion. of cancer cells.

Comparative Example 5: Measurement of the Effect of Pure (+) - Monomeric Catechin on the Total Inclusion and Collagen of 3H-Proline in the Skin

In this comparative example, a group E of 12 Wistar rats weighing 95 to 15 g to which radioactive 3H-hydroxyproline, whose specific activity is 13.6 Ci / 10 ^-3 mol, was administered to the all individuals by intraperitoneal injection of proiine-L- (5-3H) at a dose relative to the weight of the individuals of 1 mCi / kg, which represents an activity in 3H-proline radioactive 100 Ci / indiviclu. Six rats from each group received pure (+) - monomeric catechin treatment by gavage at 100 mg / kg for 5 days before sacrifice. The other 6 rats not receiving monomeric (+) - catechin treatment are a control subgroup (ctr1).

Table 9: Action of pure monomeric (+) - catechin (100 mg / kg) on the rate (in dpm / mg) of total incorporation (IT) and in the collagen (IC) of 3H-hydroxyproline in the skin of rat

In Table 9, the rate of incorporation is measured by the disintegration number of radioactive 3H-hydroxyproline per minute (dpm) per mg dry weight. The higher the number, the higher the concentration of 3H-hydroxyproline.

The results of Tables 8 and 9 show that the increase in the incorporation rate for monomeric (+) - catechin chlorhydrolysinate (+ 15%) and monomeric (+) - catechin ascorbolysinate (+ 14% ) is equivalent to that measured when the rats are gaved with pure monomeric (+) - catechin (+ 16%).

This comparative example confirms the protection of the connective tissue in vivo by the oral absorption of monomeric (+) - catechin complexes orally and therefore the protection of this weft, in particular against the intrusion of cancer cells, and this, at grades (+) - lower de facto monomeric catechin (61 mg of (+) - catechin per 00 mg of complex) than that encountered when taking pure (+) - catechin (100 mg of (+) - catechin). EXAMPLE 5 Measurement of the Effect of Monomeric (+) - Catechin Chlorhydrolysinate (Complex salt CI: Lys: HCI1 on the incidence of gastric ulcers and on the level of histamine in the gastric mucosa in rats Mastomys

In this example, the efficacy of monomeric (+) - catechin chlorhydrolysinate in vivo in an African rat, the Mastomys which is known to spontaneously cause gastric lesions and in particular gastric carcinomas is demonstrated.

The Mastomys have a special system of cells storing histamine in the gastric mucosa, these cells can give rise to carcinoid tumors.

In this example, a sample of n = 48 Mastomys is sensitized a first time by an intraperitoneal injection of 3 μg of ovalbumin dissolved in 0.2 ml of saline containing 1 mg of aluminum hydroxide ovalbumin which causes anti-immunoglobulin E (IgE) and G (IgG) antibodies. After 7 days, a second injection of 1 mg of ovalbumin in 0.0 ml of saline solution is performed in the gastric mucosa in the corpus of anesthetized animals, which causes ulcerous lesion at the level of the injection.

The 48 rats are divided into three groups: one of 24 and two of 12 individuals. The first group of 24 individuals (G1) received a placebo (NaCl solution concentrated at 0.15 M).

The second group (G2) of 12 individuals was treated with monomeric (+) - catechin hydrochlorrolysinate administered orally twice daily (2 x 300 mg), two days before injection and three days after injection. . The third group (G3) of 12 individuals received, under the same conditions as that of the G2 group, the (+) - monomeric catechin chiorhydro (ysinate) at the rate of 100 mg but intraperitoneally.

As shown by the results in Table 10, administration of (+) - catechin chlorhydrolysinate orally results in a very significant (-72%) decrease in the number of animals with gastric ulcer (NU) significant decrease (- 18%) in the histamine (TH) level, expressed in ^10-6 mg / kg of protein, in the gastric mucosa The histamine level is measured for the G1, G2 and G3 groups based on a sample of n = 12 individuals.

The decrease in the level of histamine accumulated in the gastric mucosa results directly from the action of monomeric (+) - catechin on the cell wall that stores histamine. By contributing to the strengthening of the cell wall, the monomeric (+) - catechin makes it possible to reduce the level of histamine assimilated at the level of the gastric mucosa and thus to reduce the number of ulcers.

It is interesting to note from this experience that in many types of leukemia, chronic or acute, there is an increase in mast cells with concomitant increase in histamine levels and an increase in immunoglobulin levels (Blood Cells Mol Dis 35 (3), 370-383, 2005).

Table 10: Effect of (+) - catechin hydrochlorrolysinate on the incidence of gastric ulcers and histamine levels in the gastric mucosa in astomvs

Group n NU TH (n = 12)

G1 24 23 46.17 + 2.30

G2 12 5 37.91 + 3.73

G3 12 6 34.98 + 3.52 Example 6 Measurement of the Action of Monomeric (+) - Catechin Chlorhydrolysinate (Complex Salt [C: Lys: HCI1 in the Treatment of Cancer Patients

In this example, the results relating to the test of the effect of monomeric (+) ~ catechin chlorhydrolysinate in two cancer patients treated for more than one year with a tablet of 500 mg complex salt [C: Lys : HCI] per day are shown.

In the first patient, a 67-year-old man with lymphoplasmocytic lymphoma (Waldenstom's macroglobulinemia type) was detected in a post-operative blood test at day ₀ . The diagnosis is based on the electrophoretic detection of a monoclonal peak of immunoglobulins (Ig). This diagnosis was reconfirmed and the peak assayed in a second analysis using the same electrophoresis detection.

Immunoglobulins play a vital role in the body's defense against aggression and are normally secreted by B cells.

In multiple myeloma or, for example, in the case of Waldenstom's disease, secretion of a single type of immunoglobulin or monoclonal immunoglobulin by cells present in the bone marrow and which proliferate in an uncontrolled manner is observed.

These immunoglobulins are found at a high concentration in the blood and in the urine. They therefore constitute true tumor markers. Their dosage accounts for the number of diseased cells, the extension of the disease and therefore allows to follow its evolution under treatment.

The successive blood tests gave the following data for the IgM assay (in mg per 100 ml of plasma): Table 1 1: evolution of the IgM level (in mq / 100 ml) in the blood over time Collection period igM

Jo 1910

Jo + 1 month 2010

Jo + 5 months 1966

Jo + 8 months 2467

Jo + 12 months 2280

Jo + 15 months 2748

JT 2931

J _T + 4 months 2417

J _T + 9 months 2410

J _T + 15 months 2412

The results in Table 11 show that there is, since taking monomeric (+) - catechin hydrochloride for one and a half years, a stabilization below the maximum detected on the day _T from which the treatment was administered.

The infiltration rate remained low and despite IgM values greater than 2000 mg / 100 ml. The patient has also not undergone chemotherapeutic treatment. It is therefore considered that it is stabilized.

In the second patient, left subclavicular cervical lymphadenopathy was first screened on day ₀ . Then, 2 weeks later, a left renal adenocarcinoma was detected for this patient, followed by nephrectomy of the left kidney 3 days after detection of adenocarcinoma in this kidney.

Afterwards, on day D ₀ + 3 months, a left cervical lymph node dissection was applied to the patient. After this intervention, a series of 15 radiotherapy sessions followed.

From the day I ₀ + 15 months (or D-Day _T), the patient was administered orally one tablet of {chlorhydroiysinate 500mg +) - catechin per day. On day _T + 15 months, the appearance of a pathological médiastinaie lymphadenopathy (with a volume of 45 cm ³⁾ was recorded and required lymphadenectomy médiastinaie followed by pulmonary exploration on D _T + 17 months . This examination revealed the involution of a small micronodular opacity of 5mm in the left lung and the absence of secondary lesions in the parenchyma of the lung and the abdominal stage.

AJ _T + 19 months, the consultation report concluded that renal cell carcinoma with clear cells was in complete remission. This diagnosis was reconfirmed during the control examinations carried out at Jx + 23 months. Clearly, it appears that taking (+) - catechin hydrochloride for one year has stabilized the condition of the patient.

Synthesis of the precursor composition of the complex or of the complex salt according to the invention

The method of manufacturing the composition comprising said monomeric (+) - catechin and said at least one basic amino acid as a precursor of said complex comprises the following steps:

a supply of a first quantity of monomeric (+) - catechin;

a supply of a second quantity of at least one basic amino acid, or at least one basic amino acid derivative, so as to obtain a molar equivalence ratio between said (+) - catechin and said at least one minus one basic amino acid or said at least one basic amino acid derivative, between 1: 1 and 1: 2.5, preferably greater than or equal to 1: 1, in particular greater than 1: 1, preferably less than 1: 1, or equal to 1: 2.5, in particular less than 2.5, more particularly less than or equal to 1: 2, more particularly less than 2; and contacting said monomeric (+) - catechin with said at least one basic amino acid, or with said basic amino acid derivative, so as to obtain said mixture of monomeric (+) - catechin and at least one a basic amino acid or at least one derivative of a basic amino acid.

Preferably, the process comprises an additional step which consists of feeding an acid, preferably ascorbic acid.

Alternatively, the process comprises an additional step which consists of a feed of an aqueous phase and a solubilization of said mixture in said aqueous phase to form a complex of (+) - catechin and at least one basic amino acid, said complex being solubilized in said aqueous phase.

Alternatively, the method further comprises a step of adding a biocompatible excipient to said mixture according to the invention.

Preferably, said at least one amino acid is selected from the group consisting of lysine and arginine, of natural or synthetic origin, and a mixture thereof.

In Comparative Examples 6 to 9 which follow, the composition administered orally was prepared based on a mixture of chlorhydrolysinate (Lys: HCl) in pulverulent form with monomeric pure (+) - catechin with equivalent ratios. molar ratio of 1: 1, 1: 2, 1: 3 and 1: 5.

A composition is obtained which comprises monomeric (+) - catechin and at least one basic amino acid as a precursor of said complex salt [C: Lys: HCl].

Each of the mixtures is then solubilized in water. During the solubilization of the mixture, the complex of (+) - catechin and chlorhydrolysinate in the aqueous phase is formed. The solution thus obtained is a solution of (+) - catechin chlorhydrolysinate in the form of a complex: the complex obtained in this solution is a monomeric catechin (+) complex and at least one basic amino acid (or its derivative) in a molar equivalence ratio identical to that of the mixture according to the invention. Thus, a mixture of monomeric (+) - catechin and an amino acid at a molar equivalence ratio of 1: 1 will, once solubilized in the aqueous phase, give a complex solution of de (+) - monomeric catechin and at least one basic amino acid (or its derivative) in a molar equivalence ratio of 1: 1.

This solution is then administered per os (PO) or by intravenous injection (! V) to each individual of a group of 5 Wistar rats, at a dose of 25 mg (per kg of body weight) of (+) pure monomeric catechin or a dose of (+) - catechin lysinate equivalent to 25 mg of (+) - catechin. Oral bioavailability of the complex precursor composition or complex salt according to the invention

Comparative Example 6: Measurement of the oral and injectable bioavailability of the (+) - catechin and lysine complex, at a molar equivalence ratio of 1: 1 and 1: 2, in the rat

Table 12a: Plasma concentration (ce) of total monomeric (+) - catechin (in ng / ml) as a function of time T (min)

IV PO

T (min) [C: Lys: HCI / [C: Lys: HCI / [C: Lys: HCl /

1: 2: 2] 1: 1: 1] 1: 2: 2]

this (ng / mi)

10 8066 6406 1839

30 2639 2259 3780

60 1 191 963 3190 120 338 270 1990

240 0 0 475

Table 12b: plasma concentration (ce) of free monomeric (+) - catechin (in ng / ml) as a function of time T (min)

Table 12c: Comparison of total plasma concentrations (and) in ng min / ml of free monomeric (+) ~ catechin and total (+) - catechin monomeric after intravenous and oral administration of 25 mg / kg of C: Lvs: HCl / 1: 2: 2 in the rat.

* Act measured between IV and PO data.

After intravenous injection of the Compiexe salt [C: Lys: HCl / 1: 2: 2], the initially very high piasmatic levels (ce) of (+) - catechin very quickly fall back to very low values, 340 ng / ml. ml after 2 hours for ia (+) - total catechin found in plasma and 0 ng / ml for free (+) - catechin, whereas the total blood levels of the same product taken orally under the same conditions are maintained after 2 hours at 1990 ng / ml and the amount of free (+) - catechin at 767 ng / ml, as indicated in the results shown in Tables 12a. and 12b.

This intravenous injection (made possible by the hydrohydrolysinate making the (+) - catechin soluble), shows that there are one or two lysine molecules associated with monomeric (+) - catechin, that this (+) - catechin is rapidly removed from the bloodstream.

On the other hand, the oral ingestion of the complexed form of monomeric (+) - catechin, on the one hand, increases the amounts of (+) - free monomeric catechin in the blood, and on the other hand, prolongs the peak maximum concentration.

This is a surprising result. In fact, the plasma levels obtained after direct injection into the blood give significantly higher blood levels over the first hour after administration than when the product is given orally, which is expected. On the other hand, when the complex is administered orally, free and free monomeric (+) - catechin are increased by 88% with respect to the free (+) - catechin available in the plasma (and 65325 ng min / ml for oral administration against only 87970 ng min / ml for administration by V), it is the same for the total catechin found in the plasma, and increases in the same way of 73% which is all to remarkable fact. The oral route is therefore surprisingly superior to the intravenous route for the overall bioavailability, whether free or total, of (+) - catechin in plasma after administration of the complex salt [C: 1_ys: HCl / 1: 2: 2],

Moreover, where, after 120 min, there is practically no (+) - catechin in the blood after IV injection, it is observed after oral intake of se! complex [C: Lys: HCl / 1: 2: 2] at the same time the maximum levels of catechin in the blood. it is thus demonstrated that the salt of complex [C: 1_ys: HCl / 1: 2: 2] improves the bioavailability of catechin surprisingly, indeed this bioavailability of blood ia (+) - catechin, that it is free or conjugate, is surprisingly better by mouth than by intravenous injection.

This shows that intravenous bioavailability rates and data are not extrapolatable to the oral route and that the results of the present invention are clearly distinguishable from US 4,285,964 in which no bioavailability test for per os has been exemplified.

Comparative Example 7: Measurement of the Effect of Acid on the Oral Bioavailability of the (+ -catechin and Lysine) Complex in Rats

In order to verify the effect or not of the addition of an acid to the [C: Lys / 1: 2] complex, we measured the levels of free monomeric (+) - catechin in plasma after oral ingestion. CP or complex salt [C: Lys: HCl / 1: 2: 2]. The results are shown in the table below:

Table 13: parameters of T (max), c (max) and of (+) - free catechin present in the blood calculated from the plasma concentration curves (ce) of free (+) - catechin monomeric (in ng / ml) for each source of (+) - catechin as a function of time T (minute)

Source of (+) - monomeric catechin

CP [C: Lily: HCI / 1: 2: 2]

T (max) (min) 60 60

c (max) (ng / ml) 580 1200 and (ng min / ml) 91935 165325

Act (%) 0 +77

We find the positive effect of the 2 lysine molecules on the bioavailability of monomeric (+) - catechin and its maximum concentration, the addition of 2 molecules of HCl influences the effect of the 2 molecules of lysine: Act of + 77 % in the presence of HCI and + 17% without HCI (see Table 7a).

Comparative Example 8: Measurement in rats of the effect of the molar equivalence ratio between (+) - catechin and the basic amino acid on the oral bioavailability of the (+) - catechin hydrochlorrolysinate complex according to US Pat. invention

Table 14: Parameters of T (max), c (max) and (+) - free catechin present in the blood calculated from the plasma concentration (ce) curves of free (+) - monomeric catechin (in ng / ml) for each source of (+) - catechin as a function of time T (minute)

^* value of and estimated from the profile of the evolution curve of and according to the molar equivalence ratio (+) - monomeric catechin: Lysine (see FIG. 5). The other values of and estimated from FIG. 5 are those of the ratio 1: 1, 5: 1, 5. which is 42000 ng min / ml and the ratio 1: 1: 1 which is 127000 ng min / ml.

^§ separate oral intake of chlorhydrolysinate and pure (+) - catechin.

The value of and (ng min / ml) for the complex salt C: Lys: HCL / 1: 1, 5: 1, 5 plotted in FIG. 5 is 142k ng min / ml, which is better than 1: 1: 1 (127k, reported value) and better than 1: 2.5: 2.5 (105k ng min / ml, reported value) but less than 1: 2: 2 (165k, calculated value).

All values of and obtained for (+) - catechin salts in proportions equal to or less than 1: 2.5: 2.5 are significantly better than the values obtained for these same salts in higher proportions, 1: 3: 3 (38k, calculated value) and 1: 5: 5 (26k, calculated value).

These results confirm the results of Comparative Example 4: the complex salt [C: Lys: HCL / 1: 2: 2] is the only combination (+) - catechin-lysine which clearly improves the oral bioavailability of the (+) - catechin.

The data of this example show that not only does the complex salt [C: Lys: HCL / 1: 2: 2] give an optimum of bioavailability, but also that, once this proportion is exceeded, the effect is clearly reversed. with an AcX of -59% for the molar equivalence ratio of 1: 3: 3 and -66% for the molar equivalence ratio of 1: 5: 5.

In addition, the fact of ingesting separately (in a time interval between 5 and 10 min) its monomeric Sa (+) - catechin and the chlorhydrolysinate gives a negative effect (with an Act of -48%) on the amount of ( +) - free monomeric catechin in the plasma. This demonstrates that catechin and lysine must be mixed before ingestion (in solubilized form in water or not), or at least ingested simultaneously. Comparative Example 9: Measurement in the Rat of the Nature of the Therapeutic Composition on Oral Bioavailability That the composition administered per os are based on the complex [C: AA / 1: 1 - 1: 2.5] prepared according to method described in Example 1a (1b) or 2a (2b) (see Examples 1 and 2), or that the orally administered composition is a mixture of the desired molar equivalence ratio of (+) - catechin and lysine hydrochloride (also referred to as chlorydrolysinate), the oral bioavailability results are similar (see Table 15 below).

Taking into account the results of Comparative Example 2 in which the complex [C: 1_ys / 1: 2] was prepared according to protocol 1a (see Example 1), and results of Comparative Example 8, where the salt Complex [C: 1_ys: HCl / 1: 2: 2] was prepared by simply mixing one mole of pulverulent (+) - catechin and two moles of powdered chlorhydrolysinate and then dissolved before oral administration. Results summarized in Table 15 show that oral bioavailability improvement for these complexes remain in the same order of magnitude.

Table 15: Parameters of T (max), c (max) and (+) - free catechin present in the blood calculated from the plasma concentration (ce) curves of free ia (+) - catechin monomeric (in ng / ml) for each source of (+) - catechin as a function of time T (minute)

Source of (+) - monomeric catechin

[C: Lily / 1: 2] [C: Lily: HCl / 1: 2: 2]

T (max) (min) 120 60

c (max) (ng / ml) 1547 1200

and (ng min / ml) 186348 165325 Act (%) +94 +80

The fact of being able to obtain optimal parameters of bioavailability on the basis of a pulverulent mixture of (+) - catechin and of amino acid represents an advantage in terms of the cost of production since the preparation of this mixture is carried out in a single solid phase and in a very easy way, which makes it possible to envisage large-scale production prospects.

Comparative Example 10: Rat Measurement of Oral Bioavailability for Quercetin and Epigallocatechin Gallate (EGCG)

In this example, it is shown that the effect of lysine is not significant, either on the oral bioavailability of quercetin, or on that of repigllocatechin gallate (EGCG), as shown in the results in Table 6 below. below:

Table 16: parameters of T (max), c (max) and free polyphenol present in the blood calculated from the plasma concentration (ce) curves of the polyphenol ( ^" in nq / mO for each polyphenol source as a function of time T (minute)

^* QP: Pure quercetin, that is to say not complexed with at least basic amino acid;

^§ [Q: l_ys: HCl / 1: 2: 2]: Quercetin complex with two lysines.

^** ac: measurement of the difference between the and obtained with the complex and the and measured for the QP, brought back to the value of bioavailability for the QP.

In this example, the orally administered composition was prepared based on a mixture of chlorhydrolysinate (Lys: HCl) in powder form with quercetin or pure monomeric EGCG at molar equivalence ratios of 1: 2 for quercetin, and 1: 1, 1: 2, 1: 3 and 1: 5, for EGCG.

Each of the mixtures is solubilized in water. This solution is then administered per os (PO) to each individual of a group of 5 Wistar rats, at a dose of 25 mg (per kg of body weight) of quercetin or pure monomeric EGCG or a dose of Quertecin or EGCGC lysinate equivalent to 25 mg of polyphenol.

As far as EGCG is concerned, the measured levels remain below the reliable limits of detection (that is to say below 250 ng / ml), whether for pure EGCG or for its complexed forms. whatever the proportion of chlorhydrolysinate added to epigallocatechin gallate (in a molar equivalency ratio of 1: 1: 1, 1: 2: 2, 1: 3: 3, or 1: 5: 5).

In conclusion, in view of the results of optimum bioavailability obtained for a complex between (+) - catechin and the basic amino acid with 1: 2 molar equivalence ratio, and taking into account that the attempts at complexing other Since acid polyphenols such as quertecin or EGCG have failed, it is clearly demonstrated in the context of the present invention that the [C: AA / 1: 1 - 1: 2.5] complexes are complexes having a specific activity, regarding its passage through the gastrointestinal tract. Clearly, it is not therefore a simple acid-base neutralization, which should have, in the latter case, also favored the oral bioavailability of quercetin and EGCG.

It is further understood that the present invention is in no way limited to the particular embodiments mentioned above and that many modifications can be made without departing from the scope of the appended claims.

Claims

1. Gastroenteric therapeutic composition for oral administration comprising a monomeric {+)-catechin compound and at least one basic amino acid, said composition being characterized in that it is used for the curative and/or preventive treatment of cancer, said ( +)-monomeric catechin having a molar equivalence ratio with respect to said at least one basic amino acid or to a basic amino acid derivative, of between 1:1 and 1:2.5.

2. Gastroenteric composition for oral administration according to claim 1, in which said at least one basic amino acid is lysine or arginine of natural or synthetic origin, or a mixture of the two.

3. Gastroenteric composition for oral administration according to claim 1 or 2, wherein said at least one basic amino acid is lysine.

4. Gastroenteric composition for oral administration according to any one of the preceding claims, characterized in that it comprises at least one acid.

5. Gastroenteric composition for oral administration according to claim 4, wherein said acid is chosen from ascorbic acid, acetic acid, citric acid and hydrochloric acid.

6. Gastroenteric composition for oral administration according to claims 4 or 5, in which said acid is ascorbic acid.

7. Gastroenteric composition for oral administration according to any one of the preceding claims, characterized in that it further comprises one or more biocompatible excipients.

8. Gastroenteric composition for oral administration according to any one of the preceding claims, in which the content of (+)-catechin and basic amino acid or derivative of a basic amino acid is between 15 and 95% by weight relative to the total weight of said composition, preferably between 60 and 90%, advantageously from 65 to 85%.

9. Gastroenteric composition for oral administration according to any one of the preceding claims, in liquid form, preferably in water.

10. Gastroenteric composition for oral administration according to claim 9, characterized, in a 0.01 molar solution at 25°C, by a pH equal to or greater than 3, preferably between 4 and 11, advantageously between 4, 5 and 9.

1. Gastroenteric composition for oral administration according to any one of claims 1 to 8, in solid form, preferably in water-soluble solid form, in particular in powder, tablet or tablet form.

2. Gastroenteric composition for oral administration according to any one of the preceding claims, wherein said monomeric (+)-catechin and said at least one amino acid or said at least one amino acid derivative form a complex.

13. Gastroenteric composition for oral administration according to claim 10, characterized in that said complex is in the form of sei of said complex, said salt comprising said complex, said complex comprising at least one proton from at least one acid and at least one minus one anion from said at least one acid, said salt presenting said proton and said anion in equimolar quantity relative to that of basic amino acid or basic amino acid derivative.

14. Gastroenteric composition for oral administration according to claim 10, wherein said complex is formed postadministration, said composition being a solid composition comprising said monomeric (+)-catechin and said at least one basic amino acid or said at least one derivative of basic amino acid, and optionally said acid, as a precursor of said complex or said se! of the complex according to a molar equivalence ratio of between 1:1 and 1:2.5.

15. Gastroenteric composition for oral administration according to claim 10 or 11, said composition being in solid form and comprising monomeric Sa (+)-catechin and said at least one basic amino acid or said at least one amino acid derivative basic, and optionally said acid, as precursors of said complex or of said salt of the complex, as a combined preparation for simultaneous use in solution in an aqueous phase, said complex forming before oral administration, said monomeric (+)-catechin and said at least one basic amino acid or said at least one basic amino acid derivative being present in a molar equivalence ratio of between 1:1 and 1:2.5.

16. Gastroenteric composition for oral administration according to any one of claims 1 to 15, for the preventive and/or curative treatment of hepatocellular cancer.

17. Gastroenteric composition for oral administration according to any one of claims 1 to 15, for the preventive and/or curative treatment of leukemia.

18. Gastroenteric composition for oral administration according to any one of claims 1 to 15, for the preventive and/or curative treatment of myeloma.

19. Gastroenteric composition for oral administration according to any one of claims 1 to 15, for the preventive and/or curative treatment of lymphomas.

20. Gastroenteric composition for oral administration according to any one of claims 1 to 15, for the preventive and/or curative treatment of cancers of the liver, prostate, breast, uterus, testicles, bladder, kidneys, lungs, bronchi, bones, mouth, esophagus, stomach, pancreas, colon-rectal, but not exclusively.