US20170290812A1 - Methods of treatment for cholestatic and fibrotic diseases - Google Patents

Methods of treatment for cholestatic and fibrotic diseases Download PDF

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US20170290812A1
US20170290812A1 US15/457,158 US201715457158A US2017290812A1 US 20170290812 A1 US20170290812 A1 US 20170290812A1 US 201715457158 A US201715457158 A US 201715457158A US 2017290812 A1 US2017290812 A1 US 2017290812A1
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ntz
fibrosis
pharmaceutically acceptable
liver
cholestatic
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Raphael Darteil
Robert Walczak
Carole Belanger
Emilie Negro
Pierre Daubersies
Philippe Delataille
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Genfit SA
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Genfit SA
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Assigned to GENFIT reassignment GENFIT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAUBERSIES, PIERRE, Darteil, Raphaël , NEGRO, EMILIE, BELANGER, CAROLE, DELATAILLE, PHILIPPE, WALCZAK, ROBERT
Publication of US20170290812A1 publication Critical patent/US20170290812A1/en
Priority to US15/837,889 priority Critical patent/US10130612B2/en
Priority to US15/842,234 priority patent/US10130613B2/en
Priority to US15/841,777 priority patent/US10117855B2/en
Priority to US15/841,981 priority patent/US10117856B2/en
Priority to US16/135,945 priority patent/US20190000813A1/en
Priority to US16/209,660 priority patent/US10905680B2/en
Priority to US16/910,756 priority patent/US11103484B2/en
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Definitions

  • the present invention relates to the field of medicine, in particular to the treatment of cholestatic or fibrotic diseases.
  • fibrotic diseases including liver, pulmonary, kidney or cardiac fibrosis.
  • NTZ 2-[(5-nitro-1,3-thiazol-2-yl)carbamoyl]phenyl]ethanoate
  • NTZ a synthetic antiprotozoal agent
  • the evaluation of NTZ in a liver injury model revealed its capacity to reduce circulating bile acid concentration, thus reflecting its potential to treat both cholestatic (such as PBC and PSC) and fibrotic diseases.
  • NTZ NTZ, first described in 1975 (Rossignol and Cavier, 1975), was shown to be highly effective against anaerobic protozoa, helminths, and a wide spectrum of microbes including both anaerobic and aerobic bacteria (Rossignol and Maisonneuve, 1984; Dubreuil, Houcke et al., 1996; Megraudd, Occhialini et al., 1998; Fox and Saravolatz, 2005; Pankuch and Appelbaum, 2006; Finegold, Molitoris et al., 2009).
  • NTZ pyruvate:ferredoxin oxidoreductase (PFOR) enzyme-dependent electron transfer reactions that are essential for anaerobic metabolism (Hoffman, Sisson et al., 2007).
  • PFOR pyruvate:ferredoxin oxidoreductase
  • NTZ also exhibits activity against Mycobacterium tuberculosis, which does not possess a homolog of PFOR, thus suggesting an alternative mechanism of action. Indeed, it was shown that NTZ can also act as an uncoupler disrupting membrane potential and intra-organism pH homeostasis (de Carvalho, Darby et al., 2011).
  • NTZ pharmacological effects of NTZ are not restricted to its antiparasitic activities and in recent years, several studies revealed that NTZ can also confer antiviral activity (Di Santo and Ehrisman, 2014; Rossignol, 2014).
  • NTZ interferes with the viral replication by diverse ways including a blockade in the maturation of hemagglutinin (influenza) or VP7 (rotavirus) proteins, or the activation of the protein PKR involved in the innate immune response (for a review, see (Rossignol, 2014)).
  • NTZ was also shown to have broad anticancer properties by interfering with crucial metabolic and prodeath signaling pathways (Di Santo and Ehrisman, 2014)
  • NTZ or its active metabolite Tizoxanide interferes with the activation of hepatic stellate cells (HSC), which play a key role in the development of hepatic fibrosis.
  • HSC hepatic stellate cells
  • NTZ and TZ were shown to interfere with the activation of stimulated fibroblasts derived from other organs such as heart, lung and intestines.
  • the antifibrotic properties of NTZ was further confirmed in a preclinical model of liver disease (CDAAc diet-induced NASH) by showing significant reduced levels of hepatic collagen and fibrosis.
  • NTZ In addition to its antifibrotic activity, NTZ was also shown to reduce circulating bile acid concentration in a CCl4-induced liver injury model. NTZ and TZ thus appear as compounds of interest for the treatment of cholestatic diseases and diverse types of fibrotic diseases.
  • the present invention relates to compound [2-[(5-nitro-1,3-thiazol-2-yl)carbamoyl]phenyl]ethanoate (Nitazoxanide) or its active metabolites 2-hydroxy-N-(5-nitro-2-thiazolyl)benzamide (Tizoxanide), or Tizoxanide glucuronide (TZG), or a pharmaceutically acceptable salt thereof, for use in a method for the treatment of a cholestatic or fibrotic disease.
  • the fibrotic disorder is selected in the group consisting of liver, gut, kidney, skin, epidermis, endodermis, muscle, tendon, cartilage, heart, pancreas, lung, uterus, nervous system, testis, penis, ovary, adrenal gland, artery, vein, colon, intestine (e.g. small intestine), biliary tract, soft tissue (e.g. mediastinum or retroperitoneum), bone marrow, joint, eye and stomach fibrosis.
  • the fibrotic disorder is selected in the group consisting of liver, gut, kidney, skin, epidermis, endodermis, muscle, tendon, cartilage, heart, pancreas, lung, uterus, nervous system, testis, penis, ovary, adrenal gland, artery, vein, colon, intestine (e.g. small intestine), biliary tract, soft tissue (e.g. mediastinum or retroperitoneum), bone marrow, joint, eye and stomach fibrosis.
  • the fibrotic disorder is selected in the group consisting of liver, kidney, skin, epidermis, endodermis, muscle, tendon, cartilage, heart, pancreas, lung, uterus, nervous system, testis, ovary, adrenal gland, artery, vein, colon, intestine (e.g. small intestine), biliary tract, soft tissue (e.g. mediastinum or retroperitoneum), bone marrow, joint and stomach fibrosis.
  • the fibrotic disorder is selected in the group consisting of liver, gut, lung, heart, kidney, muscle, skin, soft tissue, bone marrow, intestinal, and joint fibrosis.
  • the fibrotic disorder is selected in the group consisting of non-alcoholic steatohepatitis (NASH), pulmonary fibrosis, idiopathic pulmonary fibrosis, skin fibrosis, eye fibrosis (such as capsular fibrosis), endomyocardial fibrosis, mediastinal fibrosis, myelofibrosis, retroperitoneal fibrosis, progressive massive fibrosis (a complication of coal workers' pneumoconiosis), proliferative fibrosis, neoplastic fibrosis, lung fibrosis consecutive to chronic inflammatory airway disease (COPD, asthma, emphysema, smoker's lung,tuberculosis), alcohol or drug-induced liver fibrosis, liver cirrhosis, infection-induced liver fibrosis, radiation or chemotherapeutic-induced fibrosis, nephrogenic systemic fibrosis, Crohn's disease, ulcerative colitis
  • the cholestestatic disease is selected in the group consisting of primary biliary cholangitis (PBC), primary sclerosing cholangitis (PSC), Intrahepatic Cholestasis of Pregnancy, Progressive Familial Intrahepatic Cholestasis, Biliary atresia, Cholelithiasis, Infectious Cholangitis, Cholangitis associated with Langerhans cell histiocytosis, Alagille syndrome, Nonsyndromic ductal paucity, Drug-induced cholestasis, and Total parenteral nutrition-associated cholestasis.
  • the cholestatic disease is PBC.
  • the invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising a compound selected from NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G), for use in a method for treating a cholestatic or fibrotic disorder, wherein said compound(s) is(are) the only active ingredient(s) in the composition.
  • the invention relates to the compound or the pharmaceutical composition as defined above, for use in the treatment of a fibrotic disorder in combination with at least one therapeutically active agent with known antifibrotic activity selected from pirfenidone or receptor tyrosine kinase inhibitors (RTKIs) such as Nintedanib, Sorafenib and other RTKIs, or angiotensin II (AT1) receptor blockers, or CTGF inhibitor, or any antifibrotic compound susceptible to interfere with the TGF ⁇ - and BMP-activated pathways including activators of the latent TGF ⁇ complex such as MMP2, MMP9, THBS1 or cell-surface integrins, TGF ⁇ receptors type I (TGFBRI) or type II (TGFBRII) and their ligands such as TGF ⁇ , Activin, inhibin, Nodal, anti-Müllerian hormone, GDFs or BMPs, auxiliary co-receptors (also known as type III receptors), or components of the SM
  • the invention further relates to the compound or pharmaceutical composition as defined above, for use in combination with at least one therapeutically active agent selected from JAK/STAT inhibitors, other anti-inflammatory agents and/or immunosuppressant agents.
  • the therapeutically active agent is selected from glucocorticoids, NSAIDS, cyclophosphamide, nitrosoureas, folic acid analogs, purine analogs, pyrimidine analogs, methotrexate, azathioprine, mercaptopurine, ciclosporin, myriocin, tacrolimus, sirolimus, mycophenolic acid derivatives, fingolimod and other sphingosine-1-phosphate receptor modulators, monoclonal and/or polyclonal antibodies against such targets as proinflammatory cytokines and proinflammatory cytokine receptors, T-cell receptor, integrins.
  • the invention further relates to a pharmaceutical composition
  • a pharmaceutical composition comprising:
  • the invention also relates to a kit-of-parts comprising:
  • NTZ or TZ or a pharmaceutically acceptable salt of NTZ or TZ is used.
  • FIG. 1 Nitazoxanide and its metabolite Tizoxanide inhibit TGF ⁇ 1-induced expression of ⁇ -SMA protein in human HSC.
  • Serum-deprived HSC were preincubated for 1 hour with NTZ (A) or TZ (B) before the activation with the profibrogenic cytokine TGF ⁇ 1 (1 ng/ml). After 48 hours of incubation, the expression of a-SMA was measured by ELISA. The obtained values were transformed into percentage inhibition over TGF ⁇ 1 control. Data are presented as mean (triplicates) ⁇ standard deviation (SD). Statistical analyses were performed by one-way ANOVA followed by Bonferroni post-hoc tests, using Sigma Plot 11.0 software. [*: p ⁇ 0.05; **: p ⁇ 0.01; ***: p ⁇ 0.001 (comparison versus TGF ⁇ 1 ng/mL group)]. The curve fitting and the calculation of half maximal inhibitory concentration (IC 50 ) were performed with XLFit software 5.3.1.3.
  • FIG. 2 Nitazoxanide and its metabolite Tizoxanide reduce COL1A1 transcripts in TGF ⁇ 1-induced human HSC.
  • Serum-deprived HSC were preincubated for 1 hour with NTZ (A) or TZ (B) before the activation with TGF ⁇ 1 (1 ng/ml). After 24 hours of incubation, the expression of COL1A1 was measured by RT-qPCR. Expression values were transformed into fold induction over TGF ⁇ 1 control. Data are presented as mean (triplicates) ⁇ standard deviation (SD). Statistical analyses were performed by one-way ANOVA followed by Bonferroni post-hoc tests, using Sigma Plot 11.0 software. [*: p ⁇ 0.05; **: p ⁇ 0.01; ***: p ⁇ 0.001 (comparison versus TGF ⁇ 1 1 ng/mL group)].
  • FIG. 3 NTZ (A) or TZ (B) inhibit TGF ⁇ 1-induced expression of ⁇ -SMA protein in rat HSCs.
  • NTZ (A) or TZ (B) were added to serum-deprived rat HSC (rHSC) 1 hour before the activation with TGF ⁇ 1 (3ng/ml). After 48 hours of incubation, the expression of ⁇ -SMA was measured by ELISA. The obtained values were transformed into percentage inhibition over TGF ⁇ 1 control. Data are presented as mean (triplicates) ⁇ standard deviation (SD). Statistical analyses were performed by one-way ANOVA followed by Bonferroni post-hoc tests, using Sigma Plot 11.0 software. [*: p ⁇ 0.05; **: p ⁇ 0.01; ***: p ⁇ 0.001 (comparison versus TGF ⁇ 1 3 ng/mL group)].
  • FIG. 4 NTZ (A) or TZ (B) inhibit TGF ⁇ 1-induced expression of ⁇ -SMA protein in human lung fibroblasts.
  • NTZ (A) or TZ (B) was added to serum-deprived lung fibroblasts (NHLF) 1 hour before the activation with TGF ⁇ 1 (1 ng/ml). After 48 hours of incubation, the expression of ⁇ -SMA was measured by ELISA. The obtained values were transformed into percentage inhibition over TGF ⁇ 1 control. Data are presented as mean (triplicates) ⁇ standard deviation (SD). Statistical analyses were performed by one-way ANOVA followed by Bonferroni post-hoc tests, using Sigma Plot 11.0 software. [*: p ⁇ 0.05; **: p ⁇ 0.01; ***: p ⁇ 0.001 (comparison versus TGF ⁇ 1 2 ng/mL group)].
  • FIG. 5 NTZ (A) or TZ (B) inhibit TGF ⁇ 1-induced expression of ⁇ -SMA protein in human cardiac fibroblasts.
  • NTZ (A) or TZ (B) were added to serum-deprived cardiac fibroblasts (NHCF) 1 hour before the activation with TGF ⁇ 1 (3 ng/ml). After 48 hours of incubation, the expression of ⁇ -SMA was measured by ELISA. The obtained values were transformed into percentage inhibition over TGF ⁇ 1 control. Data are presented as mean (triplicates) ⁇ standard deviation (SD). Statistical analyses were performed by one-way ANOVA followed by Bonferroni post-hoc tests, using Sigma Plot 11.0 software. [*: p ⁇ 0.05; **: p ⁇ 0.01; ***: p ⁇ 0.001 (comparison versus TGF ⁇ 1 3ng/mL group)].
  • FIG. 6 NTZ (A) or TZ (B) inhibit TGF ⁇ 1-induced expression of a-SMA protein in human intestinal fibroblasts.
  • NTZ (A) or TZ (B) were added to serum-deprived intestinal fibroblasts (InMyoFib) 1 hour before the activation with TGF ⁇ 1 (3 ng/ml). After 48 hours of incubation, the expression of ⁇ -SMA was measured by ELISA. The obtained values were transformed into percentage inhibition over TGF ⁇ 1 control. Data are presented as mean (triplicates) ⁇ standard deviation (SD). Statistical analyses were performed by one-way ANOVA followed by Bonferroni post-hoc tests, using Sigma Plot 11.0 software. [*: p ⁇ 0.05; **: p ⁇ 0.01; ***: p ⁇ 0.001 (comparison versus TGF ⁇ 1 3 ng/mL group)].
  • FIG. 7 The chronic oral administration of Nitazoxanide (10 mg/kg/day) prevents the CDAA-induced collagen storage in the liver of C57BI/6J mice. 6 week-old C57BL/6 mice were fed a control (CSAA) diet, CDAA+1% CHOL (CDAAc) diet, or CDAAc diet supplemented with NTZ 10 mg/kg/day for 12 weeks. After the sacrifice, the hepatic collagen content was determined. Data are presented as mean ⁇ standard deviation (SD).
  • SD standard deviation
  • FIG. 8 The chronic oral administration of Nitazoxanide (10 mg/kg/day) prevents the CDAAc diet-induced fibrosis in the liver of C57BI/6J mice.
  • FIG. 9 The chronic oral administration of Nitazoxanide prevents CCl4-induced levels of circulating TBA concentration.
  • 250-275 g rats were intraperitoneally injected with olive oil (ctrl group) or with 0014 emulsified in olive oil (CCI4:olive oil 1:2 v/v, final CCl4 concentration: 2 ml/kg) twice weekly for 3 weeks.
  • the olive oil injected group was placed on control diet while the CCl4 injected groups were placed on control diet or diet supplemented with NTZ 10 mg/kg/day or 30 mg/kg/day.
  • circulating TBA concentration was determined. Data are presented as mean ⁇ standard deviation (SD). Statistical analyses were performed by a student t-test.
  • the present invention relates to the compound NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G), for use in a method for the treatment of a cholestatic or fibrotic disorder.
  • the invention relates also to a pharmaceutical composition comprising NTZ or TZ(G), or a pharmaceutically acceptable salt thereof, for use in a method for the treatment of a cholestatic or fibrotic disorder.
  • the invention relates to the use of NTZ or TZ(G), or a pharmaceutically acceptable salt thereof, for the manufacture of a medicament useful for the treatment of a cholestatic or fibrotic disorder.
  • the invention also relates to a pharmaceutical composition comprising NTZ or TZ(G), or a pharmaceutically acceptable salt thereof.
  • the pharmaceutical composition according to the invention is useful for treating a cholestatic or fibrotic disorder.
  • myofibroblasts (Rosenbloom, Mendoza et al., 2013)).
  • Fibrotic stimulus such as TGF ⁇ 1 can induce differentiation of fibroblasts to myofibroblasts (Leask and Abraham, 2004; Leask, 2007).
  • Myofibroblasts are metabolically and morphologically distinctive fibroblasts whose activation and proliferation play a key role in development of the fibrotic response.
  • these myofibroblasts display unique biological functions including expression of proteins involved in extracellular matrix formation such as different forms of collagen, fibronectin and other ECM proteins.
  • ⁇ -smooth muscle actin a-SMA
  • Tumor Growth ⁇ factors and especially the Tumor Growth Factor beta 1 (TGF ⁇ 1) are recognized physiological signals that induce the phenotypic transformation of fibroblasts into profibrotic myofibroblasts that express high levels of ⁇ -SMA and high levels of extracellular matrix proteins, which are then secreted and form the fibrotic scar tissue.
  • fibroblasts are responsible for the production of several connective tissue components (for example, collagens, elastin, proteoglycans, and hyaluronan) that constitute the extracellular matrix (Kendall and Feghali-Bostwick, 2014).
  • connective tissue components for example, collagens, elastin, proteoglycans, and hyaluronan
  • NTZ but also its active metabolite TZ, reveal antifibrotic properties since these compounds dose-dependently reduced the level of ⁇ -SMA in TGF ⁇ -induced hepatic stellate cells and in primary fibroblasts from other organs. Furthermore, treatment with NTZ or TZ also repressed collagen (Col1a1) expression in TGF ⁇ activated rat HSC, which confirms antifibrotic properties of both molecules.
  • the antifibrotic activity of NTZ, or its metabolite TZ was also demonstrated in vivo using a model of CDAAc-induced liver fibrosis, in which reduced hepatic collagen content and diminished fibrosis area were exemplified.
  • NTZ, or its active metabolite TZ could prevent the induction of circulating bile acid levels, which represent a marker of cholestatic diseases.
  • NTZ, TZ and TZG to be used according to the invention have the following Formula (I), (II) and (III) respectively:
  • NTZ and TZ were known for their antiparasitic and antiviral activities, but the prior art does not teach that NTZ, TZ and TZG have anticholestatic and anti-fibrotic effects.
  • the inventors have demonstrated in a new and inventive way that these compounds have a therapeutic effect in the treatment of cholestasis or fibrosis.
  • the invention relates to compound NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G), for use in a method for the treatment of a cholestatic or fibrotic disorder.
  • the invention relates to NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G), for use in the inhibition of proliferation and/or activation of fibroblasts.
  • fibroblasts are responsible for the production of collagen fibers or other connective tissue components of the extracellular matrix.
  • fibrosis denotes a pathological condition of excessive deposition of fibrous connective tissue in an organ or tissue. More specifically, fibrosis is a pathological process, which includes a persistent fibrotic scar formation and overproduction of extracellular matrix by the connective tissue, as a response to tissue damage. Physiologically, the deposit of connective tissue can obliterate the architecture and function of the underlying organ or tissue.
  • the fibrosis or fibrotic disorder may be associated with any organ or tissue fibrosis.
  • organ fibrosis include liver, gut, kidney, skin, epidermis, endodermis, muscle, tendon, cartilage, heart, pancreas, lung, uterus, nervous system, testis, penis, ovary, adrenal gland, artery, vein, colon, intestine (e.g. small intestine), biliary tract, soft tissue (e.g.
  • mediastinum or retroperitoneum bone marrow, joint or stomach fibrosis.
  • cholestasis or “cholestatic disease”,or “cholestatic disorder” and declinations thereof denote a pathological condition defined by a decrease in bile flow due to impaired secretion by hepatocytes or to obstruction of bile flow through intra-or extrahepatic bile ducts. Therefore, the clinical definition of cholestasis is any condition in which substances normally excreted into bile are retained.
  • the fibrotic disorder is selected in the group consisting of a liver, gut, lung, heart, kidney, muscle, skin, soft tissue (e.g. mediastinum or retroperitoneum), bone marrow, intestinal, and joint (e.g. knee, shoulder or other joints) fibrosis.
  • soft tissue e.g. mediastinum or retroperitoneum
  • bone marrow e.g. intestinal, and joint (e.g. knee, shoulder or other joints) fibrosis.
  • the fibrotic disorder is selected in the group consisting of liver, lung, skin, kidney and intestinal fibrosis.
  • treated fibrotic disorder is selected in the group consisting of the following non exhaustive list of fibrotic disorders: non- alcoholic steatohepatitis (NASH), pulmonary fibrosis, idiopathic pulmonary fibrosis, skin fibrosis, eye fibrosis, endomyocardial fibrosis, mediastinal fibrosis, myelofibrosis, retroperitoneal fibrosis, progressive massive fibrosis (a complication of coal workers' pneumoconiosis), proliferative fibrosis, neoplastic fibrosis, lung fibrosis consecutive to chronic inflammatory airway disease (COPD, asthma, emphysema, smoker's lung, tuberculosis), alcohol or drug-induced liver fibrosis, liver cirrhosis, infection-induced liver fibrosis, radiation or chemotherapeutic-induced fibrosis, nephrogenic systemic fibrosis,
  • COPD chronic inflammatory airway disease
  • the cholestestatic disease is selected in the group consisting of primary biliary cholangitis (PBC), primary sclerosing cholangitis (PSC), Intrahepatic Cholestasis of Pregnancy, Progressive Familial Intrahepatic Cholestasis, Biliary atresia, Cholelithiasis, Infectious Cholangitis, Cholangitis associated with Langerhans cell histiocytosis, Alagille syndrome, Nonsyndromic ductal paucity, Drug-induced cholestasis, and Total parenteral nutrition-associated cholestasis.
  • the cholestatic disease is PBC or PSC, in particular PBC.
  • treatment refers to the curative or preventive treatment of a cholestatic or fibrotic disorder in a subject in need thereof.
  • the treatment involves the administration of the compound, in particular comprised in a pharmaceutical composition, to a subject having a declared disorder, i.e. to a patient, to cure, delay, reverse, or slow down the progression of the disorder, improving thereby the condition of the subject.
  • a treatment may also be administered to a subject that is healthy or at risk of developing a cholestatic or fibrotic disorder to prevent or delay the disorder.
  • the treatment of a fibrotic disorder involves the administration of NTZ or TZ(G), or of a pharmaceutically acceptable salt thereof, or of a pharmaceutical composition containing the same, to a subject having a declared disorder to cure, delay, reverse or slow down the progression of the disorder, thus improving the condition of the patient or to a healthy subject, in particular a subject who is at risk of developing a cholestatic or fibrotic disorder.
  • the subject to be treated is a mammal, preferably a human.
  • the subject to be treated according to the invention can be selected on the basis of several criteria associated with cholestatic or fibrotic diseases such as previous drug treatments, associated pathologies, genotype, exposure to risk factors, viral infection, as well as on the basis of the detection of any relevant biomarker that can be evaluated by means of imaging methods and immunological, biochemical, enzymatic, chemical, or nucleic acid detection methods.
  • NTZ or TZ can be for example carried out as described by Rossignol and Cavier, 1975, or by any other way of synthesis known by a person skilled in the art.
  • TZG can be, for example, synthesized according to way of synthesis known in the art such as in Wadouachi 2011. S′agit-il de A Wadouachi, J Kovensky, Synthesis of Glycosides of Glucuronic, Galacturonic and Mannuronic Acids: An Overview, Molecules, 2011, 16(5), 3933-3968.
  • the treatment of a cholestatic or fibrotic disorder may comprise the administration of a combination of both NTZ and TZ(G), or of a pharmaceutically acceptable salt of NTZ and TZ(G).
  • both NTZ and TZ(G) are comprised together in a single composition.
  • NTZ and TZ(G) are for simultaneous, sequential or separate administration in therapy, therefore being possibly included in different compositions.
  • NTZ may be administered prior to the administration of TZ(G), or TZ(G) may be administered prior to NTZ administration.
  • the invention also relates to a kit-of-parts comprising (i) NTZ or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising NTZ or a pharmaceutically acceptable salt thereof; and (ii) TZ(G) or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising TZ(G) or a pharmaceutically acceptable salt thereof, for simultaneous, sequential or separate administration.
  • NTZ or TZ(G) can be formulated as pharmaceutically acceptable salts particularly acid or base salts compatible with pharmaceutical use.
  • Salts of NTZ and TZ(G) include pharmaceutically acceptable acid addition salts, pharmaceutically acceptable base addition salts, pharmaceutically acceptable metal salts, ammonium and alkylated ammonium salts. These salts can be obtained during the final purification step of the compound or by incorporating the salt into the previously purified compound.
  • the present invention concerns a pharmaceutical composition
  • a pharmaceutical composition comprising a compound selected from NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G), for use in a method of treatment of a cholestatic or fibrotic disease.
  • the pharmaceutical composition comprising NTZ or TZ(G), in particular for use in a method for the treatment of a cholestatic or fibrotic disorder can also comprise one or several pharmaceutically acceptable excipients or vehicles (e.g. saline solutions, physiological solutions, isotonic solutions, etc., compatible with pharmaceutical usage and well-known by one of ordinary skill in the art).
  • pharmaceutically acceptable excipients or vehicles e.g. saline solutions, physiological solutions, isotonic solutions, etc., compatible with pharmaceutical usage and well-known by one of ordinary skill in the art.
  • compositions can also further comprise one or several agents or vehicles chosen among dispersants, solubilisers, stabilisers, preservatives, etc.
  • Agents or vehicles useful for these formulations are particularly methylcellulose, hydroxymethylcellulose, carboxymethylcellulose, polysorbate 80, mannitol, gelatin, lactose, vegetable oils, acacia, liposomes, etc.
  • compositions can be formulated in the form of injectable suspensions, syrups, gels, oils, ointments, pills, tablets, suppositories, powders, gel caps, capsules, aerosols, etc., eventually by means of galenic forms or devices assuring a prolonged and/or slow release.
  • agents such as cellulose, carbonates or starches can advantageously be used.
  • NTZ or TZ(G) may be administered by different routes and in different forms.
  • the compound(s) may be administered via a systemic way, per os, parenterally, by inhalation, by nasal spray, by nasal instillation, or by injection, such as for example intravenously, by intramuscular route, by subcutaneous route, by transdermal route, by topical route, by intra-arterial route, etc.
  • the compound is formulated as a tablet. In another particular embodiment, the compound is administered orally.
  • NTZ or TZ(G), or a pharmaceutically acceptable salt thereof is administered in a therapeutically effective amount.
  • effective amount refers to an amount of the compound sufficient to produce the desired therapeutic effect.
  • NTZ or TZ(G) can be administered for the treatment of a cholestatic or fibrotic disease at a dose comprised between 0.01 mg/day to 4000 mg/day, such as from 50 mg/day to 2000 mg/day, such as from 100 mg/day to 2000 mg/day; and particularly from 100 mg/day to 1000 mg/day.
  • the NTZ, TZ(G), or a pharmaceutically acceptable salt thereof is administered at a dose of about 1000 mg/day (i.e at a dose of 900 to 1100 mg/day), in particular at 1000 mg/day.
  • NTZ, TZ(G), or a pharmaceutically acceptable salt thereof is administered orally at a dose of about 1000 mg/day, in particular at 1000 mg/day, in particular as a tablet. Administration can be performed daily or even several times per day, if necessary.
  • the compound is administered at least once a day, such as once a day, twice a day, or three times a day.
  • the compound is administered once or twice a day.
  • oral administration may be performed once a day, during a meal, for example during breakfast, lunch or dinner, by taking a tablet comprising the compound at a dose of about 1000 mg, in particular at a dose of 1000 mg.
  • a tablet is orally administered twice a day, such as by administering a first tablet comprising the compound at a dose of about 500 mg (i.e. at a dose of 450 to 550 mg), in particular at a dose of 500 mg, during one meal, and administering a second tablet comprising the compound at a dose of about 500 mg, in particular at a dose of 500 mg, during another meal the same day.
  • the course of treatment with NTZ, TZ(G) or a pharmaceutically acceptable salt thereof is for at least 1 week, in particular for at least 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20 or 24 weeks or more.
  • the course of treatment with NTZ, TZ(G) or a pharmaceutically acceptable salt thereof is for at least 1 year, 2 years, 3 years, 4 years or at least 5 years.
  • the invention relates to the treatment of a cholestatic or fibrotic disease, in particular liver fibrosis, more particularly liver fibrosis consecutive to NASH, in a patient in need thereof, comprising administering to said patient a therapeutically effective amount of NTZ or TZ(G) or of a pharmaceutically acceptable salt of NTZ or TZ(G), in particular administering NTZ at a dose of 1000 mg/day, in particular by administering a tablet containing 500 mg of NTZ twice a day, in particular during two different meals.
  • the invention relates to the use of NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G) for the treatment of a cholestatic or fibrotic disease, in combination with at least one other therapeutically active agent with known antifibrotic activity.
  • NTZ or TZ(G) can be combined with any antifibrotic compound such as pirfenidone or receptor tyrosine kinase inhibitors (RTKIs) such as Nintedanib, sorafenib and other RTKIs, or angiotensin II (AT1) receptor blockers, or CTGF inhibitor, or any antifibrotic compound susceptible to interfere with the TGF ⁇ - and BMP-activated pathways including activators of the latent TGF ⁇ complex such as MMP2, MMP9, THBS1 or cell-surface integrins, TGF ⁇ receptors type I (TGFBRI) or type II (TGFBRII) and their ligands such as TGF ⁇ , Activin, inhibin, Nodal, anti-Müllerian hormone, GDFs or BMPs, auxiliary co-receptors (also known as type III receptors), or components of the SMAD-dependent canonical pathway including regulatory or inhibitory SMAD proteins, or members of the
  • RTKIs receptor t
  • the invention also relates to a pharmaceutical composition
  • a pharmaceutical composition comprising a compound selected from NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or of TZ(G), in combination with at least one therapeutically active agent with known antifibrotic activity selected from pirfenidone or receptor tyrosine kinase inhibitors (RTKIs) such as Nintedanib, sorafenib and other RTKIs, or angiotensin II (AT1) receptor blockers, or CTGF inhibitor, or antifibrotic compound susceptible to interfere with the TGF ⁇ - and BMP-activated pathways including activators of the latent TGF ⁇ complex such as MMP2, MMP9, THBS1 or cell-surface integrins, TGF ⁇ receptors type I (TGFBRI) or type II (TGFBRII) and their ligands such as TGF ⁇ , Activin, inhibin, Nodal, anti-Müllerian hormone, GDFs or BMPs, auxiliary co-receptor
  • other classes of molecules that could also be combined with NTZ or TZ(G) include JAK/STAT inhibitors, or other anti-inflammatory and/or immunosuppressant agents.
  • JAK/STAT inhibitors or other anti-inflammatory and/or immunosuppressant agents.
  • a non exhaustive list of these agents includes but is not limited to glucocorticoids, NSAIDS, cyclophosphamide, nitrosoureas, folic acid analogs, purine analogs, pyrimidine analogs, methotrexate, azathioprine, mercaptopurine, ciclosporin, myriocin, tacrolimus, sirolimus, mycophenolic acid derivatives, fingolimod and other sphingosine-1-phosphate receptor modulators, monoclonal and/or polyclonal antibodies against such targets as proinflammatory cytokines and proinflammatory cytokine receptors, T-cell receptor, integrins.
  • the invention relates to a combination of NTZ, TZ(G) or a pharmaceutically acceptable salt thereof with at least one other therapeutically active agent with known antifibrotic activity, or with JAK/STAT inhibitors, or other anti-inflammatory and/or immunosuppressant agents.
  • the combination may be in the form of a single pharmaceutical composition comprising the different active ingredients, including NTZ, TZ(G), or a pharmaceutically acceptable salt thereof.
  • the combination is a kit of parts comprising NTZ, TZ(G), or a pharmaceutically acceptable salt thereof, and another active ingredient such as another anti-fibrotic agent, a JAK/STAT inhibitor, or another anti-inflammatory or immunosuppressant agent.
  • Said kit of parts may be for simultaneous, separate or sequential administration for the treatment of a cholestatic or fibrotic disorder
  • compound NTZ or TZ(G), or a combination of NTZ and TZ(G) is administered as the sole active ingredient.
  • the invention also relates to a pharmaceutical composition comprising a compound selected from NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or of TZ(G), or a mixture thereof, for use in a method for treating a cholestatic or fibrotic disorder, wherein said compound(s) is(are) the only active ingredient(s) in the composition
  • the present invention provides methods of treating cholestatic or fibrotic diseases comprising the administration of NTZ or TZ(G), or a pharmaceutically acceptable salt of NTZ or TZ(G), in particular in the form of a pharmaceutical composition containing NTZ or TZ.
  • kit-of-parts comprising:
  • the compounds of the kit of parts of the invention are administered simultaneously, separately or sequentially for the treatment of a fibrotic disorder.
  • the invention provides a method of treating a cholestactic and/or fibrotic diseases comprising administering twice daily to a patient in need thereof having a cholestatic or fibrotic disease (in particular to a NASH patient or to a patient having a liver fibrosis) a tablet containing 500 mg of NTZ, in particular during a meal (such as during breakfast, lunch or dinner).
  • the human primary hepatic stellate cells (hHSC) (Innoprot) were cultured in STeCM medium (ScienCell cat #5301) that was supplemented with 2% fetal bovine serum (FBS, ScienCell cat #0010), 1% penicillin/streptomycin (ScienCell cat #0503) and stellate cell growth supplement (SteCGS; ScienCell cat #5352). Cell culture flasks were coated with Poly-L Lysine (Sigma cat #P4707) for a better adherence.
  • hHSC human primary hepatic stellate cells
  • the serum-deprived hHSC were preincubated for 1 hour with the compounds followed by the addition of the profibrogenic stimuli TGF ⁇ 1 (PeproTech cat #100-21, 1 ng/mL) in serum-free and SteCGS-free medium for an additional 24 or 48 hour period (the timepoint is indicated in the figure legends).
  • TGF ⁇ 1 profibrogenic stimuli
  • PBS Invitrogen, cat #14190
  • 50 ⁇ l of lysis buffer (CelLyticTM MT reagent; Sigma #03228). Plates were then incubated for 30 min on ice using a plate shaker, before storage at ⁇ 20° C.
  • rHSC The rat primary hepatic stellate cells (Innoprot) were cultured in STeCM medium (ScienCell cat #5301) that was supplemented with 2% fetal bovine serum (FBS, ScienCell cat #0010), 1% penicillin/streptomycin (ScienCell cat #0503) and stellate cell growth supplement (SteCGS; ScienCell cat #5352).
  • FBS fetal bovine serum
  • rHSC 1% penicillin/streptomycin
  • StepCGS stellate cell growth supplement
  • the rHSC were plated at a density of 10 ⁇ 10 3 cells per well in 96-well plates. The next day, cell culture medium was removed, and cells were washed with PBS (Invitrogen cat #14190).
  • rHSC were deprived for 24 hours in serum-free and SteCGS-free medium.
  • the serum-deprived rHSC were preincubated for 1 hour with the compounds followed by addition of the profibrogenic stimuli TGF ⁇ 1 (PeproTech cat #100-21, 3ng/mL) in serum-free and SteCGS-free medium for an additional 48 hour period.
  • TGF ⁇ 1 profibrogenic stimuli
  • cells were washed with PBS (Invitrogen, cat #14190) before the addition of 50 ⁇ l of lysis buffer (CelLyticTM MT reagent; Sigma #03228). Plates were then incubated for 30 min on ice using a plate shaker, before storage at ⁇ 20° C.
  • the Normal Human Lung Fibroblasts (NHLF) (Lonza) were cultured in Fibroblast Basal Medium (FBM) (Lonza cat #CC-3131) that was supplemented with FGM-2 SingleQuotsTM Kit (Lonza cat #CC-3132).
  • FBM Fibroblast Basal Medium
  • FGM-2 SingleQuotsTM Kit (Lonza cat #CC-3132).
  • the complete medium contains 2% fetal bovine serum.
  • the NHLF were plated at a density of 5 ⁇ 10 3 cells per well in 96-well plates. The next day, cell-culture medium was removed, and cells were washed with PBS (Invitrogen cat #14190). NHLF were deprived for 24 hours in serum-free, insulin-free and rhFGF-B-free medium.
  • the serum-deprived NHLF were preincubated for 1 hour with the compounds followed by addition of the profibrogenic stimuli TGF ⁇ 1 (PeproTech cat #100-21, 1 ng/mL) in serum-free, insulin-free and rhFGF-B-free medium for an additional 48 hour period.
  • TGF ⁇ 1 profibrogenic stimuli
  • cells were washed with PBS (Invitrogen, cat #14190) before the addition of 50 ⁇ l of lysis buffer (CelLyticTM MT reagent; Sigma #03228). Plates were then incubated for 30 min on ice using a plate shaker, before storage at ⁇ 20° C.
  • NHCF-V Normal Human Cardiac Fibroblasts (ventricle) (NHCF-V) (Lonza) were isolated from normal adult heart tissue. Cells were cultured in Fibroblast Basal Medium (FBM) (Lonza cat #CC-3131) that was supplemented with FGM TM-3 BulletKitTM kit (Lonza cat #CC-4525). The complete medium contains 10% fetal bovine serum. For the activation experiments with TGF ⁇ 1, the NHCF-V were plated at a density of 6 ⁇ 10 3 cells per well in 96-well plates. The next day, cell-culture medium was removed, and cells were washed with PBS (Invitrogen cat #14190).
  • FBM Fibroblast Basal Medium
  • PBS Invitrogen cat #14190
  • NHCF were deprived for 24 hours in serum-free, insulin-free and rhFGF-B-free medium.
  • the serum-deprived NHCF were preincubated for 1 hour with the compounds followed by addition of the profibrogenic stimulus TGF ⁇ 1 (PeproTech cat #100-21, 3ng/mL) in serum-free, insulin-free and rhFGF-B-free medium for an additional 48 hour period.
  • TGF ⁇ 1 profibrogenic stimulus
  • cells were washed with PBS (invitrogen, cat #14190) before the addition of 50 ⁇ l of lysis buffer (CelLyticTM MT reagent; Sigma #03228). Plates were then incubated for 30 min on ice using a plate shaker, before storage at ⁇ 20° C.
  • the Human Intestinal Myofibroblasts (InMyoFib) (Lonza) were cultured in Smooth Muscle Cell Basal Medium (SmBM-2TM) (Lonza cat #CC-3181) that was supplemented with SmGMTM-2 BulletKitTM (Lonza cat #CC-4149).
  • the complete medium contains 5% fetal bovine serum.
  • the inMyoFib were plated at a density of 10 ⁇ 10 3 cells per well in 96-well plates. The next day, cell-culture medium was removed, and cells were washed with PBS (Invitrogen cat #14190). InMyoFib were deprived for 24 hours in serum-free, insulin-free and rhFGF-B-free medium.
  • the serum-deprived InMyoFib were preincubated for 1 hour with the compounds followed by addition of the profibrogenic stimuli TGF ⁇ 1 (PeproTech cat #100-21, 3 ng/mL) in serum-free, insulin-free and rhFGF-B-free medium for an additional 48 hour period.
  • TGF ⁇ 1 profibrogenic stimuli
  • cells were washed with PBS (Invitrogen, cat #14190) before the addition of 50 ⁇ l of lysis buffer (CelLyticTM MT reagent; Sigma #03228). Plates were then incubated for 30 min on ice using a plate shaker, before storage at ⁇ 20° C.
  • the level of ⁇ -SMA was measured using a Sandwich ELISA. Briefly, the wells of an ELISA plate were first coated with the capture antibody (mouse monoclonal anti-ACTA2, Abnova) at 4° C. overnight. After 3 washes in PBS +0,2% Tween 20, a blocking solution consisting of PBS+0.2% BSA was added for one hour followed by another washing cycle. The cell lysates were transferred into the wells for binding to the capture antibody for a period of 2 h at room temperature. After the washing procedure, the detection antibody (biotinylated mouse monoclonal anti-ACTA2, Abnova) was added for 2 hours at room temperature followed by 3 washes.
  • the capture antibody mouse monoclonal anti-ACTA2, Abnova
  • an HRP-conjugated Streptavidin (R&D Systems cat #DY998) was first applied for 30 min at room temperature. After washing, the HRP substrate TMB (BD,#555214) was added and incubated for 7min at room temperature in the dark. Upon oxidation, TMB forms a water-soluble blue reaction product that becomes yellow with addition of sulfuric acid (solution stop), enabling accurate measurement of the intensity at 450 nm using a spectrophotometer. The developed color is directly proportional to the amount of a-SMA present in the lysate.
  • RNA was isolated using Nucleospin® 96 RNA (Macherey Nagel) following manufacturer's instructions.
  • Total RNA 500 ng for in vitro samples
  • M-MLV RT Moloney Murine Leukemia Virus Reverse Transcriptase
  • 1 ⁇ RT buffer Invitrogen
  • 1 mM DTT Invitrogen
  • 0.18 mM dNTPs Promega
  • 200 ng pdN6 Amersham
  • 30 U of RNase inhibitor Promega.
  • Quantitative PCR was then carried out using the MyiQ Single-Color Real-Time PCR Detection System (Biorad). Briefly, the PCR reactions were performed in 96-WP format in 25 ul of total volume containing 1 ⁇ L of reverse transcription reaction, 0.5 ⁇ L of reverse and forward primers (10 pmol each), and 12,5 pl of 2X iQ SYBR Green Supermix (BioRad, 1725006CUST). The sequences of primers are depicted in the Table 1
  • Expression levels were normalized using the expression of 36B4 gene as a reference in human samples.
  • the standard curves were drawn by selecting the best points (at least three points) in order to have PCR reaction efficiency close to 100% and a correlation coefficient close to 1. Expression levels were determined using the standard curve equation for both the housekeeping gene and the target gene (taking into account the specific PCR efficiency of each target gene).
  • the antifibrotic effect of NTZ was assessed in a murine model of CDAAc diet-induced experimental liver fibrosis. 6 week-old C57BL/6 mice were fed for 12 weeks a control (CSAA) diet, CDAAc diet, or CDAAc diet supplemented with NTZ 10 mg/kg/day for 12 weeks.
  • CSAA control
  • CDAAc diet or CDAAc diet supplemented with NTZ 10 mg/kg/day for 12 weeks.
  • mice were sacrificed after a 6h fasting period. The liver was rapidly excised for biochemical and histological studies.
  • the antifibrotic effect of NTZ was assessed in a rat model of 0014 induced liver injury.
  • OFA S Dawley rats (initial body weight 250-275 g) were randomized according to their body weight into 4 groups and treated for 3 weeks. The rats were intraperitoneally injected with olive oil (ctrl group) or with 0014 emulsified in olive oil (CCI4:olive oil 1:2 v/v, final 0014 concentration: 2 ml/kg) twice weekly. Concomitantly, the olive oil injected group was placed on control diet while the 0014 injected groups were placed on control diet or diet supplemented with NTZ. 2 regimen containing NTZ were prepared corresponding respectively to an exposure of 10, or 30, mg/kg/day. The last day of treatment, the rats were sacrificed after a 6h fasting period. Blood samples were collected and the serum was isolated for biochemical analyses.
  • mice will be fed for 8 weeks a 0.1% DDC-supplemented diet, or 0.1% DDC-supplemented diet containing NTZ 100 mg/kg/day, or a standard mouse diet (Ssniff). The last day of treatment, the mice will be sacrificed after a 6 h fasting period. Blood samples will be taken for biochemical analyses and the liver will be rapidly excised for biochemical and histological studies.
  • mice 9 week-old C57BL/6 mice will be placed on control diet or diet supplemented with NTZ for 6 weeks. 2 regimen containing NTZ will be prepared corresponding respectively to an exposure of NTZ 30, or 100 mg/kg/day. Concomitantly, and for the total duration of 6 weeks, the mice will be treated 3 times a week with CCI4 dissolved in olive oil or vehicle by oral gavage. The amount of CCI4 will be progressively increased from 0.875 ml/kg to 2.5 ml/kg. The last day of treatment, the mice will be sacrificed after a 6 h fasting period. Blood samples will collected for biochemical analyses of serum . The liver will be rapidly excised for biochemical, histological and expression studies.
  • liver slices were first fixed for 12 hours in a solution of 4% formalin.. The, liver pieces were then washed 30 minutes in PBS, and dehydrated in ethanol solutions (successive baths at 70, 80, 95 and 100% ethanol). The liver pieces were incubated in three different baths of Xylene (Sigma-Aldrich cat #534056), followed by two baths in liquid paraffin (56° C.). Liver pieces were then put into racks that were gently filled with Histowax® to completely cover the tissue.
  • the paraffin blocks containing the tissue pieces were removed from the racks and stored at room temperature.
  • the liver blocks were cut into 3 ⁇ m slices.
  • Liver sections were deparaffinized, rehydrated and incubated for 15 minutes in a solution of Fast Green FCF 0.1% (Sigma-Aldrich, cat #F7258) before rinsing in a bath of 0.5% acetic acid (Panreac, cat #131008.1611).
  • the liver sections were rinsed in water and incubated for 30 minutes in a solution of 0.1% sirius red (Direct Red 80, Fluka cat #43665) in saturated aqueous picric acid (Sigma-Aldrich cat #P6744).
  • the liver sections were finally dehydrated, and mounted using the CV Mount medium (Leica, cat #14046430011).
  • the identity of the liver specimen was blinded from the examiner.
  • Virtual slides were generated using the Pannoramic 250 scanner from 3D Histech.
  • Quant Center software (3D Histech, including Pattern Quant and Histo Quant modules)
  • Pattern Quant was used to detect relevant tissue structure and to measure the surface.
  • Histo Quant was used to detect the stained collagen content and for the measurement of total area and percentages, based on a color threshold method.
  • the fibrosis area was expressed as the percentage of collagen surface over the whole tissue.
  • the hepatic collagen content was determined using the appropriate QuickZyme kit (Total collagen assay, cat #QZB-totco12).
  • the assay is based on the detection of hydroxyproline, which is a non-proteinogenic amino acid mainly found in the triple helix of collagen.
  • hydroxyproline in tissue hydrolysates can be used as a direct measure of the amount of collagen present in the tissue (without discrimination between procollagen, mature collagen and collagen degradation products).
  • Surgical bile duct ligation will be performed on rats in order to induce an extrahepatic cholestasis and subsequently liver fibrosis. After a 2 week recovery period, animals will be treated with NTZ at 30 or 100 mg/kg/day for one or two weeks. The last day of treatment, the mice will be sacrificed after a 6 h fasting period. Blood samples will be collected for biochemical analyses of serum. The liver will be rapidly excised for biochemical, histological & expression studies.
  • TAA Total Bile Acids
  • the abnormal persistence of differentiated myofibroblasts is a characteristic of many fibrotic diseases.
  • quiescent HSC undergo a process of activation that is characterized by a differentiation into ( ⁇ -SMA)-positive myofibroblasts.
  • ⁇ -SMA differentiation into ( ⁇ -SMA)-positive myofibroblasts.
  • a library of FDA-approved drugs was phenotypically screened in a model of human HSC activated with the profibrogenic cytokine TGF ⁇ 1.
  • the levels of a-SMA a hallmark of fibrotic lesions, were used to evaluate the potency of the drugs to interfere with the fibrotic process.
  • NTZ nitazoxanide
  • FIG. 1A Since it is known that NTZ is rapidly hydrolyzed into an active metabolite tizoxanide (TZ) (Broekhuysen, Stockis et al., 2000), this metabolite was also evaluated for its antifibrotic activity in HSC. TZ showed a profile similar to the parent drug with an IC 50 comprised between 0.1 and 3 ⁇ M ( FIG. 1B ).
  • TGF ⁇ stimulation was reduced by both compounds including the extracellular matrix collagen 1A1 (COL1A1) ( FIG. 2 ).Toxicity assays confirmed that the reduced levels of ⁇ -SMA were not due to toxicity or apoptosis of HSC (data not shown).
  • NTZ and TZ also reduced a-SMA levels in TGF ⁇ -activated HSC derived from rat (Fig.3).
  • the antifibrotic potential of NTZ and TZ was extended to fibroblasts derived from other tissues, including normal human lung fibroblasts (NHLF) ( FIG. 4 ), normal human cardiac fibroblasts ( FIG. 5 ) and human Intestinal myofibroblasts (InMyoFib) ( FIG. 6 ).
  • NHLF normal human lung fibroblasts
  • FIG. 5 normal human cardiac fibroblasts
  • InMyoFib human Intestinal myofibroblasts
  • NTZ prevented the pathological increase of circulating TBA concentration ( FIG. 09 ), which is a marker associated with cholestasis (Chang 2013)

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