Formerly | Pluristem Therapeutics |
---|---|
Company type | Public |
Nasdaq: PLUR TASE: PLUR | |
Industry | Biotechnology |
Founded | May 11, 2001 |
Founder | Shai Meretzki |
Headquarters | , Israel |
Key people | Zami Aberman (CEO, chairman) Yaky Yanay (CEO, president) |
Revenue | ₪ 0 (2010) |
₪ –30.39 million (2010) | |
Total assets | ₪ 27.97 million (2010) |
Number of employees | ~180 |
Website | pluri-biotech |
Footnotes /references [1] |
Pluri Inc., formerly Pluristem Therapeutics, is an Israeli company engaged in the development of human placental adherent stromal cells for commercial use in disease treatment. [2] According to the company's website, it extracts adult stem cells exclusively from postnatal placentas. [3]
Pluristem was founded in 2001 by Shai Meretzki of the Technion, who made use of a stem cell patent which was developed during his Ph.D. studies at The Rappaport Faculty Of Medicine, Technion, under the supervision of Dr. Shosh Merchav, together with Professors Dov Zipori and Avinoam Kadouri from the Weizmann Institute of Science. [4] [5]
In 2003, the NASDAQ-listed shell company A1 Software acquired all shares and patents belonging to Pluristem and changed its name to Pluristem Life Systems. [6] [7] In 2007 the name was changed again, this time to Pluristem Therapeutics Inc. [4] Pluristem's shares are traded on the NASDAQ exchange and the Tel Aviv Stock Exchange, as well as on the Frankfurt Stock Exchange.
In December 2020, the Genesis Prize and Start-up Nation Central named Pluri as one of the winners in a competition among Israeli high-tech and biotechnology companies. [8]
In July 2022, the company changed its name from Pluristem Therapeutics to Pluri Inc. and its ticker symbol to PLUR from PSTI. [9]
Pluristem is in the process of clinically testing the use of its PLX (PLacental eXpanded) cells in Phase I, Phase II and Phase III trials. A Phase III trial of PLX-(PAD)-peripheral arterial disease cells in the treatment of critical limb ischemia has been cleared to start enrolling patients by the U.S. Food and Drug Administration. [10] The Phase III trial has also been cleared by regulators in Germany [11] and the United Kingdom. [12] Pluristem has completed enrollment of 172 patients in January 2017 for a multinational Phase II clinical trial of its PLX-PAD treatment pertaining to intermittent claudication. [12] Results from the study suggest that PLX-R18 is safe and may significantly improve outcomes after bone marrow failure or hematopoietic cell transplantation. [13] The U.S. Food and Drug Administration has also cleared Pluristem to commence patient enrollment in a Phase I trial of its PLX-R18 cells to treat insufficient hematopoietic recovery following bone marrow transplant. [14]
PLX-R18 were initially developed with Professor Raphael Gorodetsky at Hadassah Hospital for the treatment of acute radiation syndrome and enhancement of bone marrow regeneration. [15] [16] The U.S. National Institutes of Health is currently evaluating Pluristem's PLX-R18 cells as a treatment for acute radiation syndrome. [17] The dose finding portion of the study was successfully concluded and data showed that PLX-R18 treated subjects had an 85% survival rate compared to the placebo group which had a 50% survival rate. PLX-R18 can serve as a tool for governments to protect their citizens against potential exposure to nuclear radiation. [18]
In May 2012, Pluristem reported that its experimental PLacental eXpanded cells were injected into the muscles of a 7-year-old Romanian girl undergoing treatment for bone marrow aplasia disease at the Hadassah Medical Center in Jerusalem. The girl had undergone two allogenic stem cell transplants since being admitted in August 2011, both of which failed to improve her condition. Two months thereafter, with the patient's condition deteriorating rapidly, the Director of Bone Marrow Transplantation, Cell Therapy and Transplantation Research Center at Hadassah felt that all available options had been exhausted and turned to Pluristem's PLX cells. The Helsinki committee at Israel's Ministry of Health approved the procedure under compassionate use. According to Pluristem CEO Zami Aberman, it was the first time ever that stem cells were injected into the muscle rather than into the body's blood system. Pluristem announced that the treatment led to a significant increase in the girl's red cells, white cells and platelets, effecting a reverse in her condition. [19] [20] [21] [22] [23] She was released from the hospital soon after Pluristem's announcement. [24]
In September 2012 Pluristem reported saving the life of a third bone marrow disease patient using its PLacental eXpanded cell treatment, again at Jerusalem's Hadassah Medical Center and again under the terms of compassionate use. The 45-year-old patient suffered from acute myeloid leukemia and pancytopenia, and his condition was determined to be life-threatening. After two intramuscular injections of Pluristem's PLX cells, the patient's condition improved significantly and he was released from the hospital. [25] This event has been used as a supporting reference to the medical potential of the PLX cells.
In January 2016, the US Food and Drug Administration (FDA) gave Pluristem Therapeutics the go-ahead to move forward with its innovative treatment approach for hematopoietic disorders. Pluristem was given permission to begin its Phase I trial of PLX-R18 cells to treat incomplete hematopoietic recovery following Hematopoietic Cell Transplantation. The clinical trial is expected to begin in the coming months. [26]
In 2020 Pluristem began treating COVID-19 patients with placenta cells known as PLX. [27]
On May 8, 2020, the United States Food and Drug Administration approved Pluristem's application to conduct a Phase II study of its PLX cells (as described by HospiMedica.com, "PLX cells are allogeneic mesenchymal-like cells that have immunomodulatory properties that induce the immune system’s natural regulatory T cells and M2 macrophages, and thus may prevent or reverse the dangerous overactivation of the immune system. Previous pre-clinical findings of PLX cells revealed therapeutic benefit in the treatment of severe Covid-19 cases" [28] ). [29]
Since 2007, Pluri has been engaged in a collaborative research agreement with the Charité – Berlin University of Medicine. [30]
Pluri has been awarded several grants from the Israel Innovation Authority (IIA), formerly named the Office of the Chief Scientist. [31] [32] [33]
Since 2016, the European Union's Horizon 2020 program has awarded millions of euros in grants to Pluri's clinical and research programs, including its Phase III study to treat critical limb ischemia (CLI) and its Phase III study to treat muscle injury following surgery for hip fracture. [34] [35] [36]
Later in 2016, Pluristem announced it had partnered with Japan's Fukushima Medical University to test its placental-derived cellular therapy for radiation treatment and has been asked to join the United States National Institute of Allergy and Infectious Diseases program. [37]
Since 2020, Pluri has been part of the CRISPR-IL consortium, funded by the Israel Innovation Authority. The partnership seeks to develop genetically edited PLX cells tailored for treatment of indications with unmet needs. [38]
In January 2022, Pluri announced a collaboration with Israel's largest food producer, Tnuva, to produce sustainable cultured food. [39] [40] In recognition of their partnership, Pluri and Tnuva participated in the Nasdaq closing bell ceremony in March 2022. [41] The company intends to present its technological proof of concept in 2022, with the goal of launching its first raw cultured meat product in 2023. [39]
In multicellular organisms, stem cells are undifferentiated or partially differentiated cells that can change into various types of cells and proliferate indefinitely to produce more of the same stem cell. They are the earliest type of cell in a cell lineage. They are found in both embryonic and adult organisms, but they have slightly different properties in each. They are usually distinguished from progenitor cells, which cannot divide indefinitely, and precursor or blast cells, which are usually committed to differentiating into one cell type.
Aplastic anemia (AA) is a severe hematologic condition in which the body fails to make blood cells in sufficient numbers. Blood cells are produced in the bone marrow by stem cells that reside there. Aplastic anemia causes a deficiency of all blood cell types: red blood cells, white blood cells, and platelets.
Bone marrow is a semi-solid tissue found within the spongy portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production. It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells. In adult humans, bone marrow is primarily located in the ribs, vertebrae, sternum, and bones of the pelvis. Bone marrow comprises approximately 5% of total body mass in healthy adult humans, such that a man weighing 73 kg (161 lbs) will have around 3.7 kg (8 lbs) of bone marrow.
Hematopoietic stem-cell transplantation (HSCT) is the transplantation of multipotent hematopoietic stem cells, usually derived from bone marrow, peripheral blood, or umbilical cord blood, in order to replicate inside a patient and produce additional normal blood cells. HSCT may be autologous, syngeneic, or allogeneic.
Graft-versus-host disease (GvHD) is a syndrome, characterized by inflammation in different organs. GvHD is commonly associated with bone marrow transplants and stem cell transplants.
Hematopoietic stem cells (HSCs) are the stem cells that give rise to other blood cells. This process is called haematopoiesis. In vertebrates, the first definitive HSCs arise from the ventral endothelial wall of the embryonic aorta within the (midgestational) aorta-gonad-mesonephros region, through a process known as endothelial-to-hematopoietic transition. In adults, haematopoiesis occurs in the red bone marrow, in the core of most bones. The red bone marrow is derived from the layer of the embryo called the mesoderm.
Metachromatic leukodystrophy (MLD) is a lysosomal storage disease which is commonly listed in the family of leukodystrophies as well as among the sphingolipidoses as it affects the metabolism of sphingolipids. Leukodystrophies affect the growth and/or development of myelin, the fatty covering which acts as an insulator around nerve fibers throughout the central and peripheral nervous systems. MLD involves cerebroside sulfate accumulation. Metachromatic leukodystrophy, like most enzyme deficiencies, has an autosomal recessive inheritance pattern.
Cell therapy is a therapy in which viable cells are injected, grafted or implanted into a patient in order to effectuate a medicinal effect, for example, by transplanting T-cells capable of fighting cancer cells via cell-mediated immunity in the course of immunotherapy, or grafting stem cells to regenerate diseased tissues.
ViroPharma Incorporated was a pharmaceutical company that developed and sold drugs that addressed serious diseases treated by physician specialists and in hospital settings. The company focused on product development activities on viruses and human disease, including those caused by cytomegalovirus (CMV) and hepatitis C virus (HCV) infections. It was purchased by Shire in 2013, with Shire paying around $4.2 billion for the company in a deal that was finalized in January 2014. ViroPharma was a member of the NASDAQ Biotechnology Index and the S&P 600.
Stem-cell therapy uses stem cells to treat or prevent a disease or condition. As of 2024, the only FDA-approved therapy using stem cells is hematopoietic stem cell transplantation. This usually takes the form of a bone marrow or peripheral blood stem cell transplantation, but the cells can also be derived from umbilical cord blood. Research is underway to develop various sources for stem cells as well as to apply stem-cell treatments for neurodegenerative diseases and conditions such as diabetes and heart disease.
The National Marrow Donor Program (NMDP) is a nonprofit organization founded in 1987 and based in Minneapolis, Minnesota, that operates the Be The Match Registry of volunteer hematopoietic cell donors and umbilical cord blood units in the United States.
Chemokine ligand 2 (CXCL2) is a small cytokine belonging to the CXC chemokine family that is also called macrophage inflammatory protein 2-alpha (MIP2-alpha), Growth-regulated protein beta (Gro-beta) and Gro oncogene-2 (Gro-2). CXCL2 is 90% identical in amino acid sequence as a related chemokine, CXCL1. This chemokine is secreted by monocytes and macrophages and is chemotactic for polymorphonuclear leukocytes and hematopoietic stem cells. The gene for CXCL2 is located on human chromosome 4 in a cluster of other CXC chemokines. CXCL2 mobilizes cells by interacting with a cell surface chemokine receptor called CXCR2.
Plerixafor, sold under the brand name Mozobil, is an immunostimulant used to mobilize hematopoietic stem cells in cancer patients into the bloodstream. The stem cells are then extracted from the blood and transplanted back to the patient. The drug was developed by AnorMED, which was subsequently bought by Genzyme.
Peripheral blood stem cell transplantation (PBSCT), also called "Peripheral stem cell support", is a method of replacing blood-forming stem cells. Stem cells can be destroyed through cancer treatments such as chemotherapy or radiation, as well as any blood-related diseases, such as leukemia, lymphoma, neuroblastoma and multiple myeloma. PBSCT is now a much more common procedure than its bone marrow harvest equivalent due to the ease and less invasive nature of the procedure. Studies suggest that PBSCT has a better outcome in terms of the number of hematopoietic stem cell yield.
Maribavir, sold under the brand name Livtencity, is an antiviral medication that is used to treat post-transplant cytomegalovirus (CMV). Maribavir is a cytomegalovirus pUL97 kinase inhibitor that works by preventing the activity of human cytomegalovirus enzyme pUL97, thus blocking virus replication.
Reticular dysgenesis (RD) is a rare, inherited autosomal recessive disease that results in immunodeficiency. Individuals with RD have mutations in both copies of the AK2 gene. Mutations in this gene lead to absence of AK2 protein. AK2 protein allows hematopoietic stem cells to differentiate and proliferate. Hematopoietic stem cells give rise to blood cells.
High-dose chemotherapy and bone marrow transplant (HDC/BMT), also high-dose chemotherapy with autologous bone marrow transplant, was an ineffective treatment regimen for metastatic breast cancer, and later high-risk breast cancer, that was considered promising during the 1980s and 1990s. With an overall idea that more is better, this process involved taking cells from the person's bone marrow to store in a lab, then to give such high doses of chemotherapy drugs that the remaining bone marrow was destroyed, and then to inject the cells taken earlier back into the body as replacement. It was ultimately determined to be no more effective than normal treatment, and to have significantly higher side effects, including treatment-related death.
Guo Mei is a hematologist and associate director of 307th Hospital of Chinese People’s Liberation Army and deputy director of Radiation Research Institute.
Shimon Slavin is an Israeli professor of medicine. He pioneered immunotherapy mediated by allogeneic donor lymphocytes and innovative methods for stem cell transplantation to cure hematological malignancies and solid tumors. He also used hematopoietic stem cells to induce transplantation tolerance to bone marrow and organ allografts.
OTL-103 (GSK-2696275) is a gene therapy for Wiskott–Aldrich syndrome, a rare primary immunodeficiency caused by mutations in the gene that codes for Wiskott–Aldrich syndrome protein (WASp). It was developed by Orchard Therapeutics in conjunction with GlaxoSmithKline. It is currently undergoing Phase I/II of clinical trials that are expected to conclude in October 2025.
The company engages in the development of a pipeline of products, which are derived from human placenta, a non-controversial, non-embryonic, and adult stromal cell source.
Pluristem has made the strategic decision to work only with adult stem cells, purified from the placenta after birth and, therefore, not subject to ethical or religious controversy.
מרצקי הקים את פלוריסטם על בסיס פטנטים שפיתח עם פרופ' דב ציפורי ופרופ' אבינועם כדורי ממכון ויצמן.
All the shares in the company have been purchased by a stock market shell by the name of A1 Software, which also recently bought all the patent and know-how rights on the technology of Dr. Shai Meretzki and others at the Technion and the Weizmann Institute relating to stem cell expansion.
התאים, שפיתחה חברת פלוריסטם הישראלית, הוזרקו לילדה בת 7 שהגיעה למרכז ההשתלות בבית החולים הדסה עין כרם מרומניה, כשהיא סובלת ממחלה חשוכת מרפא המונעת התחדשות של תאי מח העצם.' 'בעקבות פניית הרופא המטפל לחברת פלוריסטם ובאישור ועדת הלסינקי של משרד הבריאות, קיבלה הילדה, המאושפזת בימים אלה בבית החולים הדסה עין כרם, טיפול ניסיוני בתאי גזע מהשלייה, שפותחו בפלוריסטם.
'אנחנו הזרקנו את התאים בפעם הראשונה בעולם לתוך השריר ולא תוך מערכת הדם כמקובל בתרופות תאי גזע, זאת בחיל ורעדה לאחר שראינו תוצאות טובות בניסויים על עכברים.'