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Pincus MR, Silberstein M, Zohar N, Sarafraz-Yazdi E, Bowne WB. Poptosis or Peptide-Induced Transmembrane Pore Formation: A Novel Way to Kill Cancer Cells without Affecting Normal Cells. Biomedicines 2024; 12:1144. [PMID: 38927351 PMCID: PMC11201261 DOI: 10.3390/biomedicines12061144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/15/2024] [Accepted: 05/15/2024] [Indexed: 06/28/2024] Open
Abstract
Recent advances in cancer treatment like personalized chemotherapy and immunotherapy are aimed at tumors that meet certain specifications. In this review, we describe a new approach to general cancer treatment, termed peptide-induced poptosis, in which specific peptides, e.g., PNC-27 and its shorter analogue, PNC-28, that contain the segment of the p53 transactivating 12-26 domain that bind to HDM-2 in its 1-109 domain, bind to HDM-2 in the membranes of cancer cells, resulting in transmembrane pore formation and the rapid extrusion of cancer cell contents, i.e., tumor cell necrosis. These peptides cause tumor cell necrosis of a wide variety of solid tissue and hematopoietic tumors but have no effect on the viability and growth of normal cells since they express at most low levels of membrane-bound HDM-2. They have been found to successfully treat a highly metastatic pancreatic tumor as well as stem-cell-enriched human acute myelogenous leukemias in nude mice, with no evidence of off-target effects. These peptides also are cytotoxic to chemotherapy-resistant cancers and to primary tumors. We performed high-resolution scanning immuno-electron microscopy and visualized the pores in cancer cells induced by PNC-27. This peptide forms 1:1 complexes with HDM-2 in a temperature-independent step, followed by dimerization of these complexes to form transmembrane channels in a highly temperature-dependent step parallel to the mode of action of other membranolytic but less specific agents like streptolysin. These peptides therefore may be effective as general anti-cancer agents.
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Affiliation(s)
- Matthew R. Pincus
- Department of Pathology, SUNY Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, NY 11203, USA
| | | | - Nitzan Zohar
- Department of Surgery, Jefferson Pancreas, Biliary and Related Cancer, Thomas Jefferson University, Philadelphia, PA 19107, USA; (N.Z.); (W.B.B.)
| | | | - Wilbur B. Bowne
- Department of Surgery, Jefferson Pancreas, Biliary and Related Cancer, Thomas Jefferson University, Philadelphia, PA 19107, USA; (N.Z.); (W.B.B.)
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Abbas H, Derkaoui DK, Jeammet L, Adicéam E, Tiollier J, Sicard H, Braun T, Poyet JL. Apoptosis Inhibitor 5: A Multifaceted Regulator of Cell Fate. Biomolecules 2024; 14:136. [PMID: 38275765 PMCID: PMC10813780 DOI: 10.3390/biom14010136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024] Open
Abstract
Apoptosis, or programmed cell death, is a fundamental process that maintains tissue homeostasis, eliminates damaged or infected cells, and plays a crucial role in various biological phenomena. The deregulation of apoptosis is involved in many human diseases, including cancer. One of the emerging players in the intricate regulatory network of apoptosis is apoptosis inhibitor 5 (API5), also called AAC-11 (anti-apoptosis clone 11) or FIF (fibroblast growth factor-2 interacting factor). While it may not have yet the same level of notoriety as some other cancer-associated proteins, API5 has garnered increasing attention in the cancer field in recent years, as elevated API5 levels are often associated with aggressive tumor behavior, resistance to therapy, and poor patient prognosis. This review aims to shed light on the multifaceted functions and regulatory mechanisms of API5 in cell fate decisions as well as its interest as therapeutic target in cancer.
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Affiliation(s)
- Hafsia Abbas
- Université Oran 1, Ahmed Ben Bella, Oran 31000, Algeria; (H.A.); (D.K.D.)
| | | | - Louise Jeammet
- Jalon Therapeutics, 75010 Paris, France; (L.J.); (J.T.); (H.S.)
| | - Emilie Adicéam
- Jalon Therapeutics, 75010 Paris, France; (L.J.); (J.T.); (H.S.)
| | - Jérôme Tiollier
- Jalon Therapeutics, 75010 Paris, France; (L.J.); (J.T.); (H.S.)
| | - Hélène Sicard
- Jalon Therapeutics, 75010 Paris, France; (L.J.); (J.T.); (H.S.)
| | - Thorsten Braun
- Laboratoire de Transfert des Leucémies, EA3518, Institut de Recherche Saint Louis, Hôpital Saint Louis, Université de Paris, 75010 Paris, France;
- AP-HP, Service d’Hématologie Clinique, Hôpital Avicenne, Université Paris XIII, 93000 Bobigny, France
- OPALE Carnot Institute, The Organization for Partnerships in Leukemia, Hôpital Saint-Louis, 75010 Paris, France
| | - Jean-Luc Poyet
- INSERM UMRS976, Institut de Recherche Saint Louis, Hôpital Saint Louis, 75010 Paris, France
- Université Paris Cité, 75015 Paris, France
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Habault J, Thonnart N, Ram-Wolff C, Bagot M, Bensussan A, Poyet JL, Marie-Cardine A. Validation of AAC-11-Derived Peptide Anti-Tumor Activity in a Single Graft Sézary Patient-Derived Xenograft Mouse Model. Cells 2022; 11:cells11192933. [PMID: 36230895 PMCID: PMC9564267 DOI: 10.3390/cells11192933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Sézary syndrome (SS) is an aggressive cutaneous T cell lymphoma with poor prognosis mainly characterized by the expansion of a tumor CD4+ T cell clone in both skin and blood. So far, the development of new therapeutic strategies has been hindered by a lack of reproducible in vivo models closely reflecting patients’ clinical features. We developed an SS murine model consisting of the intravenous injection of Sézary patients’ PBMC, together with a mixture of interleukins, in NOD-SCID-gamma mice. Thirty-four to fifty days after injection, mice showed skin disorders similar to that observed in patients, with the detection of epidermis thickening and dermal tumor T cell infiltrates. Although experimental variability was observed, Sézary cells could be tracked in the blood stream, confirming that our model could efficiently exhibit both skin and blood involvement. Using this model, we evaluated the therapeutic potential of RT39, a cell-penetrating peptide derived from the survival protein anti-apoptosis clone 11 (AAC-11), that we previously characterized as specifically inducing apoptosis of Sézary patients’ malignant clone ex vivo. Systemic administration of RT39 led to cutaneous tumor T cells depletion, demonstrating efficient malignant cells’ targeting and a favorable safety profile. These preclinical data confirmed that RT39 might be an innovative therapeutic tool for Sézary syndrome.
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Affiliation(s)
- Justine Habault
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
| | - Nicolas Thonnart
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
| | - Caroline Ram-Wolff
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
- Department of Dermatology, Saint Louis Hospital, AP-HP, 75010 Paris, France
| | - Martine Bagot
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
- Department of Dermatology, Saint Louis Hospital, AP-HP, 75010 Paris, France
| | - Armand Bensussan
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
| | - Jean-Luc Poyet
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
| | - Anne Marie-Cardine
- INSERM U976 Team 1, Onco-Dermatology and Therapies, 75010 Paris, France
- Saint Louis Research Institute, Université Paris Cité, 75010 Paris, France
- Correspondence:
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