Currently, the study of many extracts in different types of cancer has allowed the validation of scientific knowledge either as a therapy that reduces the size of the tumor or that helps to improve the quality of life of the patient by reducing the associated effects of the treatment.
In the Immunobiology and Cell Biology group of the Pontificia Universidad Javeriana, a standardized extract of Caesalpinia spinosa (Dividivi) called P2Et has been obtained. This extract has been shown to have cytotoxic activity in different human and murine tumor cell lines, favoring the induction of immunogenic cell death with the release of danger signals such as calreticulin, HMGB1 and ATP. Additionally, treating mice with murine melanoma and sinus tumors significantly reduces tumor size and metastases. On the other hand, induction of complete autophagic flux and synergistic effects with anthracycline-type chemotherapeutics have been shown in human cell lines and in animal models of breast cancer.
With this background, and the results of the Phase I clinical study carried out in healthy volunteers that showed that the extract is safe, the investigators propose that treatment with the P2Et extract in patients with breast cancer could improve their general condition, impacting their quality of life. , and induce antitumor immune response, improving the immune infiltrate and acting as a transforming agent from a cold tumor to a warm tumor. This would lead to an improvement in the long-term survival of patients treated with the phytomedicine in conjunction with the chemotherapeutic treatment selected by the treating oncologist.
In order to advance on this path, and responding to the adjustments suggested in the phase I study in healthy individuals, it is proposed to carry out a clinical study that allows determining the optimal biological dose of the P2Et extract in a design based on randomized simulations of adaptive form and considering the safety of the extract as an objective in patients with breast cancer. Additionally, those parameters that allow defining the best indicators of effectiveness of P2Et in this group of patients will be evaluated, such as modulation of the immune response, quality of life, reduction of adverse effects and progression-free survival.

Start Date01 Mar 2022

Sponsor / Collaborator

Hospital Universitario San Ignacio

[+1]

NCT04410510 / Unknown statusPhase 2/3IIT

Study of the P2Et Extract Obtained From Caesalpinia Spinosa in the Symptomatic Treatment of Subjects With COVID-19 at the Hospital Universitario San Ignacio, Colombia.

Antioxidants, and particularly polyphenols, have shown protection in respiratory pathologies, which is related to the decrease in the severity of the clinical picture and suppression of inflammation. This suppression of inflammation may be related to the inhibition of NF-kB polyphenols, where its activation is related to the stimulation of 150 stimuli including cytokines (IL-1β, IL-6, THF-α, GM-CSF, MCP-1), TLRs, among others. There may be other additional mechanisms that can help control virus-induced respiratory pathologies, among which are the regulation of reactive oxygen species (ROS) associated with tissue destruction caused by the virus and a selective antiviral action can be reported. direct.
The standardized P2Et extract obtained from C. spinosa, by the Immunobiology Group of the Pontificia Universidad Javeriana, is highly antioxidant, decreases lipid peroxidation and tissue damage and induces complete autophagy in stressed or tumor cells. The induction of a full autophagic flow could inhibit the replication of beta-coronaviruses like SARS-CoV-2. Furthermore, P2Et can decrease the factors involved in tissue damage by reducing IL-6 and decrease ILC2 cells of the lung in animals with lung metastases (unpublished data).
These antecedents suggest that the supplementation of patients with COVID-19 with the extract P2Et, could improve their general condition and decrease the inflammatory mediators and the viral load.

Start Date30 Sep 2020

Sponsor / Collaborator

Hospital Universitario San Ignacio

[+1]

NCT03663881 / CompletedPhase 1IIT

Open-label, Single Arm, Phase 1 Study to Assess the Safety of P2Et Extract Obtained From Caesalpinia Spinosa, in Voluntary Subjects in Colombia

Caesalpinia spinosa extract is rich in gallotannins and other well characterized polyphenols and has a major antioxidant activity. The extract shows immunomodulatory activity in healthy animals and anti-tumor activity in animals with breast cancer and melanoma as well.
The use of P2Et in animals with tumors shows a synergistic effect with doxorubicin in drug-resistant cell lines. In addition, an increase in survival of transplanted animals with a TS/A breast cancer tumor model and treated with P2Et, in conjunction with calreticulin increase is observed.
This open-label, single arm, Phase 1 study intends to assess the safety of P2Et extract obtained from Caesalpinia spinosa, with dose escalation, in healthy voluntary participants in Colombia.

Start Date30 Apr 2019

Sponsor / Collaborator

Hospital Universitario San Ignacio

[+1]

100 Clinical Results associated with Tara spinosa Extract

100 Translational Medicine associated with Tara spinosa Extract

100 Patents (Medical) associated with Tara spinosa Extract

Literatures (Medical) associated with Tara spinosa Extract

01 May 2024·Histochemistry and Cell Biology

The secretome from human-derived mesenchymal stem cells augments the activity of antitumor plant extracts in vitro

Article

Author: Ramirez, J A ; Ospina, V ; Fiorentino, S ; Rivera, B S ; Jiménez, M C ; Barreto, A ; Restrepo, L M

AbstractCancer is understood as a multifactorial disease that involve multiple cell types and phenotypes in the tumor microenvironment (TME). The components of the TME can interact directly or via soluble factors (cytokines, chemokines, growth factors, extracellular vesicles, etc.). Among the cells composing the TME, mesenchymal stem cells (MSCs) appear as a population with debated properties since it has been seen that they can both promote or attenuate tumor progression. For various authors, the main mechanism of interaction of MSCs is through their secretome, the set of molecules secreted into the extracellular milieu, recruiting, and influencing the behavior of other cells in inflammatory environments where they normally reside, such as wounds and tumors. Natural products have been studied as possible cancer treatments, appealing to synergisms between the molecules in their composition; thus, extracts obtained from Petiveria alliacea (Anamu-SC) and Caesalpinia spinosa (P2Et) have been produced and studied previously on different models, showing promising results. The effect of plant extracts on the MSC secretome has been poorly studied, especially in the context of the TME. Here, we studied the effect of Anamu-SC and P2Et extracts in the human adipose-derived MSC (hAMSC)–tumor cell interaction as a TME model. We also investigated the influence of the hAMSC secretome, in combination with these natural products, on tumor cell hallmarks such as viability, clonogenicity, and migration. In addition, hAMSC gene expression and protein synthesis were evaluated for some key factors in tumor progression in the presence of the extracts by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Multiplex, respectively. It was found that the presence of the hAMSC secretome did not affect the cytotoxic or clonogenicity-reducing activities of the natural extracts on cancer cells, and even this secretome can inhibit the migration of these tumor cells, in addition to the fact that the profile of molecules can be modified by natural products. Overall, our findings demonstrate that hAMSC secretome participation in TME interactions can favor the antitumor activities of natural products.

10 Apr 2024·Journal of Toxicology

Assessment of Acute and Chronic Toxicity in Wistar Rats (Rattus norvegicus) and New Zealand Rabbits (Oryctolagus cuniculus) of an Enriched Polyphenol Extract Obtained from Caesalpinia spinosa

Article

Author: Urueña, Claudia ; Fiorentino, Susana ; Saturno, Jenny ; Lasso, Paola ; Ballesteros-Ramírez, Ricardo

Although herbal drugs are often considered safe for consumption, there is increasing evidence that some can generate undesirable health effects. However, polyphenols found in certain plants have been shown to provide a range of benefits for human health. In previous work, a standardized and quantified extract (P2Et) obtained from Caesalpinia spinosa (Dividivi) plant showed promising antioxidant, immunomodulatory, and anti-inflammatory properties in animal models of cancer and COVID-19 patients. The extract has also been subjected to genotoxicity, mutagenicity, and 28-day oral chronic toxicity evaluations, demonstrating a good safety profile. To advance preclinical and clinical development, further acute and chronic toxicity evaluations of the P2Et extract were performed. Acute toxicity tests were performed orally in Wistar rats at a dose of 2000 mg/kg, indicating that the lethal dose 50% (LD50) value exceeded 2000 mg/kg and classifying the P2Et extract as category 5 according to the Globally Harmonized System of Classification (GHS). In this work, chronic toxicity tests were conducted for 180 days on Wistar rats and New Zealand rabbits at a dose of 1000 mg/kg under Good Laboratory Practice (GLP) conditions. No weight loss or alterations in biochemical and hematological parameters associated with treatment were observed in the animals, suggesting the absence of toxicity in the assessed parameters. These results indicate that the P2Et extract is safe for oral administration at doses up to 1000 mg/kg body weight over a six-month period.

23 Mar 2023·Pharmaceutics

Encapsulated Phytomedicines against Cancer: Overcoming the "Valley of Death".

Article

Author: Fiorentino, Susana ; Luque-Michel, Edurne ; Urueña, Claudia P ; Ballesteros-Ramírez, Ricardo ; Brotons-Canto, Ana ; Rojas, Laura ; Martinez-López, Ana Luisa ; Imbuluzqueta, Izaskun

P2Et is the standardized extract of Caesalpinia spinosa (C. spinosa), which has shown the ability to reduce primary tumors and metastasis in animal models of cancer, by mechanisms involving the increase in intracellular Ca++, reticulum stress, induction of autophagy, and subsequent activation of the immune system. Although P2Et has been shown to be safe in healthy individuals, the biological activity and bioavailability can be increased by improving the dosage form. This study investigates the potential of a casein nanoparticle for oral administration of P2Et and its impact on treatment efficacy in a mouse model of breast cancer with orthotopically transplanted 4T1 cells. Animals were treated with either free or encapsulated oral P2Et orally or i.p. Tumor growth and macrometastases were evaluated. All P2Et treatments significantly delayed tumor growth. The frequency of macrometastasis was reduced by 1.1 times with P2Et i.p., while oral P2Et reduced it by 3.2 times and nanoencapsulation reduced it by 3.57 times. This suggests that nanoencapsulation led to higher doses of effective P2Et being delivered, slightly improving bioavailability and biological activity. Therefore, the results of this study provide evidence to consider P2Et as a potential adjuvant in the treatment of cancer, while the nanoencapsulation of P2Et provides a novel perspective on the delivery of these functional ingredients.

100 Deals associated with Tara spinosa Extract

R&D Status

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Indication	Highest Phase	Country/Location	Organization	Date
Breast Cancer	Phase 2	CO	Hospital Universitario San Ignacio	01 Mar 2022
COVID-19	Preclinical	CO	Hospital Universitario San Ignacio	30 Sep 2020
Toxicity	Preclinical	CO	Hospital Universitario San Ignacio	30 Apr 2019

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