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da Veiga Moreira J, Nleme N, Schwartz L, Leclerc-Desaulniers K, Carmona E, Mes-Masson AM, Jolicoeur M. Methylene Blue Metabolic Therapy Restrains In Vivo Ovarian Tumor Growth. Cancers (Basel) 2024; 16:355. [PMID: 38254843 PMCID: PMC10814748 DOI: 10.3390/cancers16020355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
Ovarian cancer remains a significant challenge, especially in platinum-resistant cases where treatment options are limited. In this study, we investigated the potential of methylene blue (MB) as a metabolic therapy and complementary treatment approach for ovarian cancer. Our findings demonstrated a significant in vivo reduction in the proliferation of TOV112D-based ovarian-cell-line xenografts. In this preclinical study, which used a carboplatin-resistant ovarian cancer tumor model implanted into mice, MB-mediated metabolic therapy exhibited superior tumor slowdown compared to carboplatin treatment alone. This indicates, for the first time, MB's potential as an alternative or adjuvant treatment, especially for resistant cases. Our in vitro study on TOV112D and ARPE-19 sheds light on the impact of such an MB-based metabolic therapy on mitochondrial energetics (respiration and membrane potential). MB showed a modulatory role in the oxygen consumption rate and the mitochondrial membrane potential. These results revealed, for the first time, that MB specifically targets TOV112D mitochondria and probably induces cell apoptosis. The differential response of normal (ARPE-19) and cancer (TOV112D) cells to the MB treatment suggests potential alterations in cancer cell mitochondria, opening avenues for therapeutic approaches that target the mitochondria. Overall, our findings suggest the efficacy of MB as a possible treatment for ovarian cancer and provide valuable insights into the mechanisms underlying the efficacy of methylene blue metabolic therapy in ovarian cancer treatment.
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Affiliation(s)
- Jorgelindo da Veiga Moreira
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montreal, QC H3T 1J4, Canada
| | - Nancy Nleme
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montreal, QC H3T 1J4, Canada
| | | | - Kim Leclerc-Desaulniers
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada (A.-M.M.-M.)
| | - Euridice Carmona
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada (A.-M.M.-M.)
| | - Anne-Marie Mes-Masson
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada (A.-M.M.-M.)
- Department of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montreal, QC H3T 1J4, Canada
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Martinez C, Karim M, El-Misri R, Kaldany E, Nabid A, Bettahar R, Vincent LS, Martin AG, Jolicoeur M, Yassa M, Barkati M, Bahoric B, Archambault R, Villeneuve H, Mohiuddin M, Niazi TM. Conventional vs. Hypo-Fractionated, Radiotherapy for High-Risk Prostate Cancer (PCS5), Randomized, Non-Inferiority, Phase 3 Trial: Posthoc Analysis of IMRT vs. 3D-CRT Radiation Therapy Associated Toxicities. Int J Radiat Oncol Biol Phys 2023; 117:S25-S26. [PMID: 37784461 DOI: 10.1016/j.ijrobp.2023.06.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The Prostate Cancer Study number 5 (PCS5), is a multi-centric non-inferiority, phase 3, randomized controlled trial of high-risk prostate cancer patients of treated with either conventionally fractionated radiotherapy (CFRT) or hypofractionated radiotherapy (HFRT). The 7 years' pre-planned analysis showed that HFRT (68 Gy in 25 fractions) was as effective and well tolerated as CFRT (76 Gy in 38 fractions). In this posthoc analysis we aim to report the genitourinary (GU) and gastrointestinal (GI) toxicities associated with radiation therapy techniques: intensity-modulated radiotherapy (IMRT) and 3D-conformal radiotherapy (3D-CRT). MATERIALS/METHODS PCS5 randomized patients in a 1:1 ratio to receive either CFRT or HFRT. All patients received long term neoadjuvant, concurrent and adjuvant androgen suppression, with a median duration of 24 months. The toxicities were reported as per the Common Terminology Criteria for Adverse Events version 4. Acute toxicities were defined as presenting ≤ 180 days post-RT start and delayed > 180 days. The cumulative acute and delayed GI and GU toxicities were classified in grade groups: grade 1 or higher (G1+), G2+, and G3+. For each grade group, acute and delayed, we performed multivariable logistic regression analyses, adjusting for age, CTV volume, diabetes, fractionation (CRFT or HFRT), hypertension, and stage < T3b or ≥ T3b. For efficacy analyses cox-regression was utilized. A p-value < 0.05 was considered significant. RESULTS Three hundred twenty of the 329 patients enrolled in the trial were included in this posthoc analyses. The mean age was 71.4 ± 6.1 years, and the mean CTV volume (n = 219) was 47.25 ± 19.9 cc. IMRT was used in 195 (60.6%) patients and 3D-CRT in 125 (39.1%) patients. Multivariable logistic regression showed a significant difference in favor of IMRT for GI G2+ acute toxicity (OR = 0.285 [0.14-0.59]; CI: 95%; p<0.001) and GI G2+ delayed toxicity (OR = 0.202 [0.60-0.69]; CI: 95%; p = 0.01). There were no differences in G3+ GI or GU toxicities and there were no grade 4 toxicities. There were no differences in efficacy at 7 years between the two treatment technics. Outcomes for IMRT vs. 3D-CRT respectively, overall survival (81.5% vs 79.2%; HR: 0.92 [0.55-1.53]; CI: 95%; p-value: 0.74), distant metastasis free survival (90,7% vs 92.8%; HR: 1.4 [0.63-3.1]; CI: 95%; p-value: 0.42), prostate cancer mortality (95.8% vs. 92.2%; HR: 0.93 [0.32-2.67]; CI: 95%; p-value: 0.89), and biochemical failure (85.1% vs 88%; HR: 1.35 [0.72-2.52]; CI: 95%; p-value: 0.35). CONCLUSION This is the first phase 3 randomized controlled trial assessing the use of HFRT vs. CFRT, exclusively in high-risk prostate cancer patients. Given that our efficacy data at 7 years follow-up establishes moderate HFRT as a new standard of care and no difference between IMRT and 3D-CRT, we strongly recommend that patients who are treated with EBRT should receive IMRT, given the reduced acute and delayed grade 2 or higher GI toxicities.
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Affiliation(s)
- C Martinez
- McGill University Health Centre, Montreal, QC, Canada; Jewish General Hospital, Montreal, QC, Canada
| | - M Karim
- Jewish General Hospital, Montreal, QC, Canada
| | - R El-Misri
- Jewish General Hospital, Montreal, QC, Canada
| | - E Kaldany
- Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC, Canada
| | - A Nabid
- Centre hospitalier universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - R Bettahar
- CSSS Rimouski-Neigette, Rimouski, QC, Canada
| | - L S Vincent
- Pavillon Ste-Marie Centre hospitalier régional de Trois-Rivières (CHRTR), Trois-Rivieres, QC, Canada
| | - A G Martin
- Department of Radiation Oncology CHU de Québec-Université Laval, Québec, QC, Canada
| | - M Jolicoeur
- Charles LeMoyne Hospital, Longueuil, QC, Canada
| | - M Yassa
- CIUSSS de L'Est-de-I'lle-de Montreal Hopital Maisonneuve-Rosemont, Montreal, QC, Canada
| | - M Barkati
- Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
| | - B Bahoric
- Jewish General Hospital, Montreal, QC, Canada
| | | | | | - M Mohiuddin
- Saint John Regional Hospital and Dalhousie University, Saint John, NB, Canada
| | - T M Niazi
- McGill University, Montreal, QC, Canada
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Niazi TM, Vincent F, Malagon T, Jolicoeur M, Yousuf J, Delouya G, Martin AG, Duclos M, Lock MI, Bahoric B, Kamran A, Archambault R, Amjad A, Nabid A. Phase III Study of Hypofractionated, Dose Escalation Radiotherapy vs. Conventional Pelvic Radiation Therapy followed by High Dose Rate Brachytherapy Boost for High Risk Adenocarcinoma of the Prostate (PCS VI): Acute Toxicity Results. Int J Radiat Oncol Biol Phys 2023; 117:S26. [PMID: 37784462 DOI: 10.1016/j.ijrobp.2023.06.284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The low α\β ratio of 1.2-2 for prostate cancer (PCa) suggests high radiation-fraction sensitivity and predicts a therapeutic advantage of lager fraction size. We have recently shown (PCS5) that high risk prostate cancer patients can safely and effectively be treated with moderate hypofractionated radiation therapy (HF-RT). To date there has been no phase-III randomized clinical-trial comparing moderately HF-RT with EBRT and HDR boost (HDRB). We are reporting the acute safety of EBRT+HDRB compared to moderate HF-RT in this phase III Canadian trial. MATERIALS/METHODS From January 2015-June 2022, 308 high-risk localized PCa patients were randomized to receive either HF-RT or EBRT+HDRB. All patients received neo-adjuvant, concurrent, and long-term adjuvant androgen deprivation therapy (ADT). EBRT+HDRB consisted of 46 Gy in 2 Gy per fraction to the pelvis and a 15 Gy in one fraction HDR boost within 3 weeks of EBRT. HF-RT include concomitant dose escalation of 68 Gy in 2.72 Gy per fraction to the prostate, and 45 Gy in 1.8 Gy per fraction to the pelvic lymph-nodes. RESULTS Of the 308 patients, 148 received HF-RT and 144 EBRT+ HDRB. The remainder either withdrew from the study or were treated with standard (2 Gy per fraction) fractionation for technical reasons. In both intention to treat and as treated analysis, using log-Rank, there were more grade 1 or worse (G1+) acute GI and GU events and more G2+ acute GI events in the HF-RT than EBRT+HDRB. As treated analysis the acute G1+ and G2+ GI events were 92 vs 77 (60.1% vs. 53.5%; p < 0.017) and 21 vs 10 (13.7% vs. 6.9%; p = 0.052), respectively for HF-RT and EBRT + HDRB. Similarly, the G1+ acute GU events were 123 vs. 101 (80.4% vs.70.1%; p < 0.001) respectively for HF-RT and EBRT+HDRB. There were only four G3 GI and one G3 GU acute toxicities in both arms. No grade 4 toxicities were reported. CONCLUSION This is the first study of EBRT+HDRB compared to moderate HF dose escalated RT in high-risk prostate cancer patients treated with long-term ADT and pelvic RT. Our results demonstrate that both treatment approaches are well-tolerated and that EBRT+HDRB carries less G2+ GI and G1+ GU acute toxicities.
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Affiliation(s)
- T M Niazi
- Jewish General Hospital, Montreal, QC, Canada; Department of Radiation Oncology, Jewish General Hospital, McGill University, Montreal, QC, Canada
| | - F Vincent
- Hopital Universitaire de Trois Rivieres, Trois Rivieres, QC, Canada
| | - T Malagon
- Mcgill University, Montreal, QC, Canada
| | - M Jolicoeur
- Charles LeMoyne Hospital, Longueuil, QC, Canada
| | - J Yousuf
- Windsor Regional Hospital Cancer Program, Windsor, ON, Canada
| | - G Delouya
- Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
| | - A G Martin
- Department of Radiation Oncology CHU de Québec-Université Laval, Québec, QC, Canada
| | - M Duclos
- McGill University Health Centre, Division of Radiation Oncology, Montreal, QC, Canada
| | - M I Lock
- London Health Sciences Centre, London, ON, Canada
| | - B Bahoric
- Jewish General Hospital, Montreal, QC, Canada
| | - A Kamran
- Eastern Health Cancer Care Program, St. John's, NL, Canada
| | | | - A Amjad
- University of Saskatchewan, Regina, SK, Canada
| | - A Nabid
- Centre hospitalier universitaire de Sherbrooke, Sherbrooke, QC, Canada
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Yasemi M, Jolicoeur M. A genome-scale dynamic constraint-based modelling (gDCBM) framework predicts growth dynamics, medium composition and intracellular flux distributions in CHO clonal variations. Metab Eng 2023; 78:209-222. [PMID: 37348809 DOI: 10.1016/j.ymben.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/16/2022] [Accepted: 06/09/2023] [Indexed: 06/24/2023]
Abstract
Optimizing mammalian cell growth and bioproduction is a tedious task. However, due to the inherent complexity of eukaryotic cells, heuristic experimental approaches such as, metabolic engineering and bioprocess design, are frequently integrated with mathematical models of cell culture to improve biological process efficiency and find paths for improvement. Constraint-based metabolic models have evolved over the last two decades to be used for dynamic modelling in addition to providing a linear description of steady-state metabolic systems. Formulation and implementation of the underlying optimization problems require special attention to the model's performance and feasibility, lack of defects in the definition of system components, and consideration of optimal alternate solutions, in addition to processing power limitations. Here, the time-resolved dynamics of a genome-scale metabolic network of Chinese hamster ovary (CHO) cell metabolism are shown using a genome-scale dynamic constraint-based modelling framework (gDCBM). The metabolic network was adapted from a reference model of CHO genome-scale metabolic model (GSMM), iCHO_DG44_v1, and dynamic restrictions were imposed to its exchange fluxes based on experimental results. We used this framework for predicting physiological changes in CHO clonal variants. Because of the methodical creation of the components for the flux balance analysis optimization problem and the integration of a switch time, this model can generate sequential predictions of intracellular fluxes during growth and non-growth phases (per hour of culture time) and transparently reveal the shortcomings in such practice. As a result of the differences exploited by various clones, we can understand the relevance of changes in intracellular flux distribution and exometabolomics. The integration of various omics data into the given gDCBM framework, as well as the reductionist analysis of the model, can further help bioprocess optimization.
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Affiliation(s)
- Mohammadreza Yasemi
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, P.O. Box 6079, Centre-ville Station, Montréal, Québec, H3C 3A7, Canada.
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, P.O. Box 6079, Centre-ville Station, Montréal, Québec, H3C 3A7, Canada.
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Niazi T, Nabid A, Malagon T, Bettahar R, Vincent L, Martin A, Jolicoeur M, Yassa M, Barkati M, Igidbashian L, Bahoric B, Archambault R, Villeneuve H, Mohiuddin M. Conventional vs. Hypofractionated, Radiotherapy for High-Risk Prostate Cancer: 7-Year Outcomes of the Randomized, Non-Inferiority, Phase 3 PCS5 Trial. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Peres S, Jolicoeur M. Special Issue on “Frontiers in Connecting Steady-State and Dynamic Approaches for Modelling Cell Metabolic Behavior”. Processes (Basel) 2022; 10:1612. [DOI: 10.3390/pr10081612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
Abstract
Understanding the behaviour of cell metabolism is the crucial key in bioprocess development and optimization, as well as in the development of efficient therapies [...]
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Abusarah J, Khodayarian F, El-Hachem N, Salame N, Olivier M, Balood M, Roversi K, Talbot S, Bikorimana JP, Chen J, Jolicoeur M, Trudeau LE, Kamyabiazar S, Annabi B, Robert F, Pelletier J, El-Kadiry AEH, Shammaa R, Rafei M. Engineering immunoproteasome-expressing mesenchymal stromal cells: A potent cellular vaccine for lymphoma and melanoma in mice. Cell Rep Med 2021; 2:100455. [PMID: 35028603 PMCID: PMC8714858 DOI: 10.1016/j.xcrm.2021.100455] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 08/30/2021] [Accepted: 10/22/2021] [Indexed: 11/29/2022]
Abstract
Dendritic cells (DCs) excel at cross-presenting antigens, but their effectiveness as cancer vaccine is limited. Here, we describe a vaccination approach using mesenchymal stromal cells (MSCs) engineered to express the immunoproteasome complex (MSC-IPr). Such modification instills efficient antigen cross-presentation abilities associated with enhanced major histocompatibility complex class I and CD80 expression, de novo production of interleukin-12, and higher chemokine secretion. This cross-presentation capacity of MSC-IPr is highly dependent on their metabolic activity. Compared with DCs, MSC-IPr hold the ability to cross-present a vastly different epitope repertoire, which translates into potent re-activation of T cell immunity against EL4 and A20 lymphomas and B16 melanoma tumors. Moreover, therapeutic vaccination of mice with pre-established tumors efficiently controls cancer growth, an effect further enhanced when combined with antibodies targeting PD-1, CTLA4, LAG3, or 4-1BB under both autologous and allogeneic settings. Therefore, MSC-IPr constitute a promising subset of non-hematopoietic antigen-presenting cells suitable for designing universal cell-based cancer vaccines.
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Affiliation(s)
- Jamilah Abusarah
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Fatemeh Khodayarian
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Nehme El-Hachem
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Natasha Salame
- Department of Biomedical Sciences, Université de Montréal, Montreal, QC, Canada
| | - Martin Olivier
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Mohammad Balood
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Katiane Roversi
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Sebastien Talbot
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Jean-Pierre Bikorimana
- Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, QC, Canada
| | - Jingkui Chen
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montreal, QC, Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montreal, QC, Canada
| | - Louis-Eric Trudeau
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Samaneh Kamyabiazar
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC, Canada
| | - Borhane Annabi
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC, Canada
| | - Francis Robert
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Jerry Pelletier
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | | | - Riam Shammaa
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
- Canadian Centers for Regenerative Therapy, Toronto, ON, Canada
- IntelliStem Technologies Inc., Toronto, ON, Canada
| | - Moutih Rafei
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, QC, Canada
- Molecular Biology Program, Université de Montréal, Montreal, QC, Canada
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Jolicoeur M, Derashodian T, Nguyen-Huynh T, Hillmann E, Denis T, Héliou R. OC-0102 HDR brachytherapy as a single-day monotherapy: Survival results of a phase II randomized trial. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06306-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Derashodian T, de castro Hillmann E, Nguyen-Huynh T, Jolicoeur M. PP-0155 Antibiotic Prophylaxis for Prostate HDR Brachytherapy: Interim Results of a Phase III trial. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06447-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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da Veiga Moreira J, Jolicoeur M, Schwartz L, Peres S. Fine-tuning mitochondrial activity in Yarrowia lipolytica for citrate overproduction. Sci Rep 2021; 11:878. [PMID: 33441687 PMCID: PMC7807019 DOI: 10.1038/s41598-020-79577-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 12/07/2020] [Indexed: 01/29/2023] Open
Abstract
Yarrowia lipolytica is a non-conventional yeast with promising industrial potentials for lipids and citrate production. It is also widely used for studying mitochondrial respiration due to a respiratory chain like those of mammalian cells. In this study we used a genome-scale model (GEM) of Y. lipolytica metabolism and performed a dynamic Flux Balance Analysis (dFBA) algorithm to analyze and identify metabolic levers associated with citrate optimization. Analysis of fluxes at stationary growth phase showed that carbon flux derived from glucose is rewired to citric acid production and lipid accumulation, whereas the oxidative phosphorylation (OxPhos) shifted to the alternative respiration mode through alternative oxidase (AOX) protein. Simulations of optimized citrate secretion flux resulted in a pronounced lipid oxidation along with reactive oxygen species (ROS) generation and AOX flux inhibition. Then, we experimentally challenged AOX inhibition by adding n-Propyl Gallate (nPG), a specific AOX inhibitor, on Y. lipolytica batch cultures at stationary phase. Our results showed a twofold overproduction of citrate (20.5 g/L) when nPG is added compared to 10.9 g/L under control condition (no nPG addition). These results suggest that ROS management, especially through AOX activity, has a pivotal role on citrate/lipid flux balance in Y. lipolytica. All taken together, we thus provide for the first time, a key for the understanding of a predominant metabolic mechanism favoring citrate overproduction in Y. lipolytica at the expense of lipids accumulation.
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Affiliation(s)
- Jorgelindo da Veiga Moreira
- grid.183158.60000 0004 0435 3292Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Ecole Polytechnique de Montréal, Centre-Ville Station, P.O. Box 6079, Montréal, QC Canada
| | - Mario Jolicoeur
- grid.183158.60000 0004 0435 3292Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Ecole Polytechnique de Montréal, Centre-Ville Station, P.O. Box 6079, Montréal, QC Canada
| | - Laurent Schwartz
- grid.50550.350000 0001 2175 4109Assistance Publique des Hôpitaux de Paris, 149 avenue Victoria, 75004 Paris, France
| | - Sabine Peres
- grid.4444.00000 0001 2112 9282LRI, Université Paris-Saclay, CNRS, 91405 Orsay, France ,grid.503376.4MaIAGE, INRAE, Université Paris-Saclay, 78350 Jouy-en-Josas, France
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Lambert L, Jolicoeur M, Diop M, Paré M, Dendukuri N, Vutcovici-Nicolae M, Matteau A, Azzi L, Benigeri M, Bogaty P, Racine N, de Guise M. STRENGTHS AND LIMITATIONS OF USING MEDICO-ADMINISTRATIVE DATA TO COMPARE THE PRACTICE AND OUTCOMES OF PERCUTANEOUS CORONARY INTERVENTION IN QUÉBEC WITH THE REST OF CANADA. Can J Cardiol 2020. [DOI: 10.1016/j.cjca.2020.07.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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da Veiga Moreira J, Schwartz L, Jolicoeur M. Targeting Mitochondrial Singlet Oxygen Dynamics Offers New Perspectives for Effective Metabolic Therapies of Cancer. Front Oncol 2020; 10:573399. [PMID: 33042846 PMCID: PMC7530255 DOI: 10.3389/fonc.2020.573399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/13/2020] [Indexed: 11/13/2022] Open
Abstract
The occurrence of mitochondrial respiration has allowed evolution toward more complex and advanced life forms. However, its dysfunction is now also seen as the most probable cause of one of the biggest scourges in human health, cancer. Conventional cancer treatments such as chemotherapy, which mainly focus on disrupting the cell division process, have shown being effective in the attenuation of various cancers but also showing significant limits as well as serious sides effects. Indeed, the idea that cancer is a metabolic disease with mitochondria as the central site of the pathology is now emerging, and we provide here a review supporting this "novel" hypothesis re-actualizing past century Otto Warburg's thoughts. Our conclusion, while integrating literature, is that mitochondrial activity and, in particular, the activity of cytochrome c oxidase, complex IV of the ETC, plays a fundamental role in the effectiveness or non-effectiveness of chemotherapy, immunotherapy and probably radiotherapy treatments. We therefore propose that cancer cells mitochondrial singlet oxygen (1O2) dynamics may be an efficient target for metabolic therapy development.
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Affiliation(s)
- Jorgelindo da Veiga Moreira
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC, Canada
| | | | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC, Canada
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Schwartz L, Peres S, Jolicoeur M, da Veiga Moreira J. Cancer and Alzheimer's disease: intracellular pH scales the metabolic disorders. Biogerontology 2020; 21:683-694. [PMID: 32617766 DOI: 10.1007/s10522-020-09888-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 06/23/2020] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) and cancer have much in common than previously recognized. These pathologies share common risk factors (inflammation and aging), with similar epidemiological and biochemical features such as impaired mitochondria. Metabolic reprogramming occurs during aging and inflammation. We assume that inflammation is directly responsible of the Warburg effect in cancer cells, with a decreased oxidative phosphorylation and a compensatory highthroughput glycolysis (HTG). Similarly, the Warburg effect in cancer is thought to support an alkaline intracellular pH (pHi), a key component of unrelenting cell growth. In the brain, inflammation results in increased secretion of lactate by astrocytes. The increased uptake of lactic acid by neurons results in the inverse Warburg effect, such as seen in AD. The neuronal activity is dampened by a fall of pHi. Pronounced cytosol acidification results in decreased mitochondrial energy yield as well as apoptotic cell death. The link between AD and cancer is reinforced by the fact that treatment aiming at restoring the mitochondrial activity have been experimentally shown to be effective in both diseases. Low carb diet, lipoic acid, and/or methylene blue could then appear promising in both sets of these clinically diverse diseases.
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Affiliation(s)
| | - Sabine Peres
- LRI, Université Paris-Sud, CNRS, Université Paris-Saclay, 91405, Orsay, France.,MaIAGE, INRA, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical, Engineering, Ecole Polytechnique de Montréal, Montréal, QC, Canada
| | - Jorgelindo da Veiga Moreira
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical, Engineering, Ecole Polytechnique de Montréal, Montréal, QC, Canada.
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Samman K, Mehanna P, Takla E, Baron C, Grenier J, Ruiz M, Hussin J, Jolicoeur M. METABOLOMICS TO UNVEIL A CHARACTERISTIC SIGNATURE OF HUMAN MYOCARDIAL INFARCTION. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Tremblay-Gravel M, Malhamé I, Avram R, Gravel GM, Desplantie O, Pacheco C, Moayedi Y, Moscarello T, Ducharme A, Ashley E, Jolicoeur M, Wheeler M, Khandelwal A. OUTCOMES OF AFRICAN AMERICAN VS. NON-AFRICAN AMERICAN WOMEN WITH PERIPARTUM CARDIOMYOPATHY: A COMPARISON ANALYSIS BETWEEN CANADIAN AND UNITED STATES COHORTS. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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16
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Jolicoeur M, Nguyen-Huynh T, Derashodian T, de Castro Hellmann E, Wakil G, Nachabe M, Antebi E, Héliou R. Patient-Reported Quality of Life in Low and Intermediate Risk Prostate Cancer Patients Randomized a Phase II Randomized Trial of HDR Brachytherapy As Monotherapy (BRP2). Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Khriguian J, Tsui J, Kucharczyk M, Nabid A, Bettahar R, Vincent L, Martin A, Jolicoeur M, Yassa M, Barkati M, Igidbashian L, Bahoric B, Archambault R, Villeneuve H, Mohiuddin M, Niazi T. Rectal Wall vs. Whole Rectum Dose: Which Volume Better Predicts Gastrointestinal Toxicity from Prostate External Beam Radiotherapy? Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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18
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Tsui J, Khriguian J, Kucharczyk M, Nabid A, Bettahar R, Vincent L, Martin A, Jolicoeur M, Yassa M, Barkati M, Igidbashian L, Bahoric B, Archambault R, Villeneuve H, Mohiuddin M, Niazi T. Optimal Hypofractionated Rectal Dose-Volume Constraint From The Prostate Cancer Patients of The PCS V Trial. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Vaughan R, Tsui J, Kucharczyk M, Nabid A, Bettahar R, Vincent L, Martin A, Jolicoeur M, Yassa M, Barkati M, Igidbashian L, Bahoric B, Archambault R, Villeneuve H, Mohiuddin M, Niazi T. The Clinical Significance of Bone Mineral Density Changes Following Long Term Androgen Deprivation Therapy in Prostate Cancer Patients Enrolled in the PCS V Trial. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Ren X, Deschênes JS, Tremblay R, Peres S, Jolicoeur M. A kinetic metabolic study of lipid production in Chlorella protothecoides under heterotrophic condition. Microb Cell Fact 2019; 18:113. [PMID: 31253148 PMCID: PMC6598345 DOI: 10.1186/s12934-019-1163-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/19/2019] [Indexed: 11/13/2022] Open
Abstract
Background Microalgae have been proposed as potential platform to produce lipid-derived products, such as biofuels. Knowledge on the intracellular carbon flow distribution may identify key metabolic processes during lipid synthesis thus refining culture/genetic strategies to maximize cell lipid productivity. A kinetic metabolic model simulating cell metabolic behavior and lipid production was first applied in the microalgae platform Chlorella protothecoides under heterotrophic condition. It combines both physiology and flux information in a kinetic approach. Cell nutrition, growth, lipid production and almost 30 metabolic intermediates covering central carbon metabolism were included and simulated. Results Model simulations were shown to adequately agree with experimental data, which is suggesting that the proposed model copes with Chlorella protothecoides cells’ biology. The dynamic metabolic flux analysis using the model showed a reversible starch flux from accumulation to decomposing when glucose reached depletion, while net lipid flux shows a quasi-constant rate. The sensitive flux parameters on starch and lipid metabolism suggested that starch synthesis is the major competing pathway that affects lipid accumulation in C. protothecoides. Flux analysis also demonstrated that high lipid yield under heterotrophic condition is accompanied with high lipid flux and low TCA activity. Meanwhile, the dynamic flux distribution also suggests a relatively constant ratio of glucose distributed to biomass, lipid, starch, nucleotides as well as pentose phosphate pathway. Conclusion The model described not only experimental data, but also unraveled intracellular carbon flow distribution and identify key metabolic processes during lipid synthesis. Most of the metabolic kinetics also showed statistical significance for metabolic mechanism. Therefore, this study unravels the mechanisms of the glucose impact on the dynamic carbon flux distribution, thus improving our understanding of the links between carbon fluxes and lipid metabolism in C. protothecoides. Electronic supplementary material The online version of this article (10.1186/s12934-019-1163-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaojie Ren
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo, China.,Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montreal, Centre-ville Station, P.O. Box 6079, Montreal, H3C 3A7, QC, Canada
| | | | - Réjean Tremblay
- Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC, G5L 3A1, Canada
| | - Sabine Peres
- LRI, Université Paris-Sud, CNRS, Université Paris-Saclay, 91405, Orsay, France.,MaIAGE, INRA, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montreal, Centre-ville Station, P.O. Box 6079, Montreal, H3C 3A7, QC, Canada.
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Jolicoeur M, Nguyen T, Derashodian T, Hill E, Mondat M, Nachabe M, Antebi E, Wakil G, Héliou R. OC-0282 HDR brachytherapy Monotherapy for prostate cancer: a one-day schedule phase II trial acute toxicity. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30702-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Jolicoeur M, Hill E. PV-0146 RTOG versus CTCAE score: reporting toxicity of HDR brachytherapy Monotherapy for prostate cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30566-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Theiri M, Chadjaa H, Marinova M, Jolicoeur M. Combining chemical flocculation and bacterial co-culture of Cupriavidus taiwanensis and Ureibacillus thermosphaericus to detoxify a hardwood hemicelluloses hydrolysate and enable acetone-butanol-ethanol fermentation leading to butanol. Biotechnol Prog 2018; 35:e2753. [PMID: 30468318 DOI: 10.1002/btpr.2753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 11/19/2018] [Accepted: 11/20/2018] [Indexed: 12/25/2022]
Abstract
Butanol, a fuel with better characteristics than ethanol, can be produced via acetone-butanol-ethanol (ABE) fermentation using lignocellulosic biomass as a carbon source. However, many inhibitors present in the hydrolysate limit the yield of the fermentation process. In this work, a detoxification technology combining flocculation and biodetoxification within a bacterial co-culture composed of Ureibacillus thermosphaericus and Cupriavidus taiwanensis is presented for the first time. Co-culture-based strategies to detoxify filtered and unfiltered hydrolysates have been investigated. The best results of detoxification were obtained for a two-step approach combining flocculation to biodetoxification. This sequential process led to a final phenolic compounds concentration of 1.4 g/L, a value close to the minimum inhibitory level observed for flocculated hydrolysate (1.1 g/L). The generated hydrolysate was then fermented with Clostridium acetobutylicum ATCC 824 for 120 h. A final butanol production of 8 g/L was obtained, although the detoxified hydrolysate was diluted to reach 0.3 g/L of phenolics to ensure noninhibitory conditions. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 35: e2753, 2019.
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Affiliation(s)
- Mariem Theiri
- Research Laboratory in Applied Metabolic Engineering, Dept. of Chemical Engineering, École Polytechnique de Montréal, J.-A. -Bombardier Pavilion, 2900 Édouard-Montpetit Blvd., Montréal, QC, H3T 1J4, Canada.,Centre National en Électrochimie et en Technologies Environnementales, 5230, Boulevard Royal, Shawinigan, QC, G9N 4R6, Canada
| | - Hassan Chadjaa
- Centre National en Électrochimie et en Technologies Environnementales, 5230, Boulevard Royal, Shawinigan, QC, G9N 4R6, Canada
| | - Mariya Marinova
- Dept. of Chemistry and Chemical Engineering, Royal Military College of Canada, 13 General Crerar Crescen Kingston, ON, K7K 7B4, Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Dept. of Chemical Engineering, École Polytechnique de Montréal, J.-A. -Bombardier Pavilion, 2900 Édouard-Montpetit Blvd., Montréal, QC, H3T 1J4, Canada
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Laflaquière B, Leclercq G, Choey C, Chen J, Peres S, Ito C, Jolicoeur M. Identifying Biomarkers of Wharton's Jelly Mesenchymal Stromal Cells Using a Dynamic Metabolic Model: The Cell Passage Effect. Metabolites 2018; 8:metabo8010018. [PMID: 29495309 PMCID: PMC5876007 DOI: 10.3390/metabo8010018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/08/2018] [Accepted: 02/22/2018] [Indexed: 01/08/2023] Open
Abstract
Because of their unique ability to modulate the immune system, mesenchymal stromal cells (MSCs) are widely studied to develop cell therapies for detrimental immune and inflammatory disorders. However, controlling the final cell phenotype and determining immunosuppressive function following cell amplification in vitro often requires prolonged cell culture assays, all of which contribute to major bottlenecks, limiting the clinical emergence of cell therapies. For instance, the multipotent Wharton's Jelly mesenchymal stem/stromal cells (WJMSC), extracted from human umbilical cord, exhibit immunosuppressive traits under pro-inflammatory conditions, in the presence of interferon-γ (IFNγ), and tumor necrosis factor-α (TNFα). However, WJMSCs require co-culture bioassays with immune cells, which can take days, to confirm their immunomodulatory function. Therefore, the establishment of robust cell therapies would benefit from fast and reliable characterization assays. To this end, we have explored the metabolic behaviour of WJMSCs in in vitro culture, to identify biomarkers that are specific to the cell passage effect and the loss of their immunosuppressive phenotype. We clearly show distinct metabolic behaviours comparing WJMSCs at the fourth (P4) and the late ninth (P9) passages, although both P4 and P9 cells do not exhibit significant differences in their low immunosuppressive capacity. Metabolomics data were analysed using an in silico modelling platform specifically adapted to WJMSCs. Of interest, P4 cells exhibit a glycolytic metabolism compared to late passage (P9) cells, which show a phosphorylation oxidative metabolism, while P4 cells show a doubling time of 29 h representing almost half of that for P9 cells (46 h). We also clearly show that fourth passage WJMSCs still express known immunosuppressive biomarkers, although, this behaviour shows overlapping with a senescence phenotype.
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Affiliation(s)
- Benoît Laflaquière
- Department of Chemical Engineering, Research Laboratory in Applied Metabolic Engineering, École Polytechnique de Montréal, C.P.6079, Centre-ville Station, Montréal, QC H3C 3A7, Canada.
| | - Gabrielle Leclercq
- Department of Chemical Engineering, Research Laboratory in Applied Metabolic Engineering, École Polytechnique de Montréal, C.P.6079, Centre-ville Station, Montréal, QC H3C 3A7, Canada.
| | - Chandarong Choey
- Sprott Centre for Stem Cell Research, Ottawa Hospital Research Institute, 501 Smyth Rd. CCW 5105a, Ottawa, ON K1H 8L6, Canada.
| | - Jingkui Chen
- Department of Chemical Engineering, Research Laboratory in Applied Metabolic Engineering, École Polytechnique de Montréal, C.P.6079, Centre-ville Station, Montréal, QC H3C 3A7, Canada.
| | - Sabine Peres
- Department of Chemical Engineering, Research Laboratory in Applied Metabolic Engineering, École Polytechnique de Montréal, C.P.6079, Centre-ville Station, Montréal, QC H3C 3A7, Canada.
- LRI, Université Paris-Sud, CNRS, Université Paris-Saclay, 91405 Orsay, France.
- MaIAGE, INRA, Université Paris-Saclay, 78350 Jouy-en-Josas, France.
| | - Caryn Ito
- Sprott Centre for Stem Cell Research, Ottawa Hospital Research Institute, 501 Smyth Rd. CCW 5105a, Ottawa, ON K1H 8L6, Canada.
| | - Mario Jolicoeur
- Department of Chemical Engineering, Research Laboratory in Applied Metabolic Engineering, École Polytechnique de Montréal, C.P.6079, Centre-ville Station, Montréal, QC H3C 3A7, Canada.
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Schwartz L, da Veiga Moreira J, Jolicoeur M. Physical forces modulate cell differentiation and proliferation processes. J Cell Mol Med 2018; 22:738-745. [PMID: 29193856 PMCID: PMC5783863 DOI: 10.1111/jcmm.13417] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 09/12/2017] [Indexed: 01/06/2023] Open
Abstract
Currently, the predominant hypothesis explains cellular differentiation and behaviour as an essentially genetically driven intracellular process, suggesting a gene-centrism paradigm. However, although many living species genetic has now been described, there is still a large gap between the genetic information interpretation and cell behaviour prediction. Indeed, the physical mechanisms underlying the cell differentiation and proliferation, which are now known or suspected to guide such as the flow of energy through cells and tissues, have been often overlooked. We thus here propose a complementary conceptual framework towards the development of an energy-oriented classification of cell properties, that is, a mitochondria-centrism hypothesis based on physical forces-driven principles. A literature review on the physical-biological interactions in a number of various biological processes is analysed from the point of view of the fluid and solid mechanics, electricity and thermodynamics. There is consistent evidence that physical forces control cell proliferation and differentiation. We propose that physical forces interfere with the cell metabolism mostly at the level of the mitochondria, which in turn control gene expression. The present perspective points towards a paradigm shift complement in biology.
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Affiliation(s)
| | | | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic EngineeringDepartment of Chemical EngineeringÉcole Polytechnique de MontréalMontréalQCCanada
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26
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Jolicoeur M, Derashodian T, Last J, Wakil G, Mondat M. Multimodality Image Registrations for Combined MRI/CT HDR Prostate Brachytherapy: The Concept of the Iurethra. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Jolicoeur M, David S, Rousseau P, Mondat M. Long-Term Follow-up for High-Dose-Rate Interstitial Brachytherapy and Lumpectomy as a Second Conservative Treatment for Local Recurrences of Breast Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Derashodian T, Le M, Mondat M, Wakil G, Last J, Jolicoeur M. V150 and Urethral Dmax Predict Radiation Induced Prostatitis. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Niazi T, Nabid A, Bettahar R, Vincent L, Martin A, Jolicoeur M, Yassa M, Barkati M, Igidbashian L, Bahoric B, Archambault R, Villeneuve H, Mohiuddin M, Azoulay L. Phase 3 Study of Hypofractionated, Dose Escalation Radiation Therapy for High-Risk Adenocarcinoma of the Prostate. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Jolicoeur M, Diakité A, Derashodian T, Mondat M. Second Conservative Treatment for Breast Cancer Local Recurrence Using HDR Interstitial Brachytherapy: Cosmetic Outcome and Quality of Life. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Marquis-Gravel G, Ieroncig F, Demers S, Ghersi I, Rosca L, Simard P, Massie C, Massicotte G, Lalancette J, Bastiany A, El-Turaby F, Diodati J, Paradis J, Daneault B, L'Allier P.L, Potter B, Jolicoeur M. CONTEMPORARY INCIDENCE OF MURAL THROMBUS FOLLOWING ACUTE ANTERIOR STEMI COMPLICATED BY NEW ANTERO/APICAL WALL MOTION ABNORMALITIES: INSIGHTS FROM THE MULTICENTER MAGIC REGISTRY. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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32
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Goffaux G, Hammami I, Jolicoeur M. A Dynamic Metabolic Flux Analysis of Myeloid-Derived Suppressor Cells Confirms Immunosuppression-Related Metabolic Plasticity. Sci Rep 2017; 7:9850. [PMID: 28852166 PMCID: PMC5575287 DOI: 10.1038/s41598-017-10464-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 08/10/2017] [Indexed: 12/27/2022] Open
Abstract
Recent years have witnessed an increasing interest at understanding the role of myeloid-derived suppressor cells (MDSCs) in cancer-induced immunosuppression, with efforts to inhibit their maturation and/or their activity. We have thus modelled MDSCs central carbon metabolism and bioenergetics dynamic, calibrating the model using experimental data on in vitro matured mice bone marrow cells into MDSCs. The model was then used to probe the cells metabolic state and dynamics, performing a dynamic metabolic flux analysis (dMFA) study. Indeed, MDSCs maturation correlates with a high glycolytic flux contributing to up to 95% of the global ATP turnover rate, while most of the glucose-derived carbon enters the TCA cycle. Model simulations also reveal that pentose phosphate pathway and oxidative phosphorylation activities were kept at minimal levels to ensure NADPH production and anabolic precursors synthesis. Surprisingly, MDSCs immunosuppressive activity, i.e. L-arginine uptake, metabolism and endogenous synthesis, only consumes sparse quantities of energy-rich nucleotides (ATP and NADPH). Therefore, model simulations suggest that MDSCs exhibit a heterogeous metabolic profile similar to tumour cells. This behavior is probably an indirect immunosuppressive mechanism where MDSCs reduce the availability of carbon sources in the tumour periphery microenvironment, which could explain the dysfuntion and death of immune effector cells.
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Affiliation(s)
- Guillaume Goffaux
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Quebéc, Canada
| | - Iness Hammami
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Quebéc, Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Quebéc, Canada.
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Zhao X, Kasbi M, Chen J, Peres S, Jolicoeur M. A dynamic metabolic flux analysis of ABE (acetone-butanol-ethanol) fermentation byClostridium acetobutylicumATCC 824, with riboflavin as a by-product. Biotechnol Bioeng 2017; 114:2907-2919. [DOI: 10.1002/bit.26393] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 07/24/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Xinhe Zhao
- Research Laboratory in Applied Metabolic Engineering; Department of Chemical Engineering; École Polytechnique de Montréal; Montréal Québec Canada
| | - Mayssa Kasbi
- Research Laboratory in Applied Metabolic Engineering; Department of Chemical Engineering; École Polytechnique de Montréal; Montréal Québec Canada
| | - Jingkui Chen
- Research Laboratory in Applied Metabolic Engineering; Department of Chemical Engineering; École Polytechnique de Montréal; Montréal Québec Canada
| | - Sabine Peres
- LRI, Université Paris-Sud; CNRS, Université Paris-Saclay; Orsay France
- MaIAGE, INRA; Université Paris-Saclay; Jouy-en-Josas France
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering; Department of Chemical Engineering; École Polytechnique de Montréal; Montréal Québec Canada
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Ren X, Zhao X, Turcotte F, Deschênes JS, Tremblay R, Jolicoeur M. Current lipid extraction methods are significantly enhanced adding a water treatment step in Chlorella protothecoides. Microb Cell Fact 2017; 16:26. [PMID: 28187768 PMCID: PMC5303247 DOI: 10.1186/s12934-017-0633-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 01/20/2017] [Indexed: 01/22/2023] Open
Abstract
Background Microalgae have the potential to rapidly accumulate lipids of high interest for the food, cosmetics, pharmaceutical and energy (e.g. biodiesel) industries. However, current lipid extraction methods show efficiency limitation and until now, extraction protocols have not been fully optimized for specific lipid compounds. The present study thus presents a novel lipid extraction method, consisting in the addition of a water treatment of biomass between the two-stage solvent extraction steps of current extraction methods. The resulting modified method not only enhances lipid extraction efficiency, but also yields a higher triacylglycerols (TAG) ratio, which is highly desirable for biodiesel production. Results Modification of four existing methods using acetone, chloroform/methanol (Chl/Met), chloroform/methanol/H2O (Chl/Met/H2O) and dichloromethane/methanol (Dic/Met) showed respective lipid extraction yield enhancement of 72.3, 35.8, 60.3 and 60.9%. The modified acetone method resulted in the highest extraction yield, with 68.9 ± 0.2% DW total lipids. Extraction of TAG was particularly improved with the water treatment, especially for the Chl/Met/H2O and Dic/Met methods. The acetone method with the water treatment led to the highest extraction level of TAG with 73.7 ± 7.3 µg/mg DW, which is 130.8 ± 10.6% higher than the maximum value obtained for the four classical methods (31.9 ± 4.6 µg/mg DW). Interestingly, the water treatment preferentially improved the extraction of intracellular fractions, i.e. TAG, sterols, and free fatty acids, compared to the lipid fractions of the cell membranes, which are constituted of phospholipids (PL), acetone mobile polar lipids and hydrocarbons. Finally, from the 32 fatty acids analyzed for both neutral lipids (NL) and polar lipids (PL) fractions, it is clear that the water treatment greatly improves NL-to-PL ratio for the four standard methods assessed. Conclusion Water treatment of biomass after the first solvent extraction step helps the subsequent release of intracellular lipids in the second extraction step, thus improving the global lipids extraction yield. In addition, the water treatment positively modifies the intracellular lipid class ratios of the final extract, in which TAG ratio is significantly increased without changes in the fatty acids composition. The novel method thus provides an efficient way to improve lipid extraction yield of existing methods, as well as selectively favoring TAG, a lipid of the upmost interest for biodiesel production. Electronic supplementary material The online version of this article (doi:10.1186/s12934-017-0633-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaojie Ren
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montreal, P.O. Box 6079, Centre-ville Station, Montreal, QC, H3C 3A7, Canada
| | - Xinhe Zhao
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montreal, P.O. Box 6079, Centre-ville Station, Montreal, QC, H3C 3A7, Canada
| | - François Turcotte
- Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC, G5L 3A1, Canada
| | | | - Réjean Tremblay
- Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC, G5L 3A1, Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montreal, P.O. Box 6079, Centre-ville Station, Montreal, QC, H3C 3A7, Canada.
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Murschel F, Fortier C, Jolicoeur M, Hodges RS, De Crescenzo G. Two Complementary Approaches for the Controlled Release of Biomolecules Immobilized via Coiled-Coil Interactions: Peptide Core Mutations and Multivalent Presentation. Biomacromolecules 2017; 18:965-975. [DOI: 10.1021/acs.biomac.6b01830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Frederic Murschel
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Charles Fortier
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Mario Jolicoeur
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Robert S. Hodges
- Department
of Biochemistry and Molecular Genetics, University of Colorado, School of Medicine, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Gregory De Crescenzo
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
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Tremblay-Gravel M, Marquis-Gravel G, Avram R, Desplantie O, Ducharme A, Ly H, Jolicoeur M. FELLOW-INITIATED RESEARCH: A TEACHING MODEL FOR TRAINEES TO BOLSTER INTEREST AND INCREASE PROFICIENCY IN CLINICAL RESEARCH. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Barkati M, King B, Fortin I, Portelance L, Viswanathan A, Fyles T, Beriwal S, Alfieri J, Lim K, Harkenrider M, Small W, Klopp A, Stewart A, Yashar C, Bosch W, Jhingran A, Jolicoeur M, Gaffney D. Intensity Modulated Radiation Therapy for Vulvar Carcinoma: Changes in Practice Over 5 Years. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Avram R, Simard F, Marquis-Gravel G, Couture É, Pacheco C, Tremblay-Gravel M, Desplantie O, Lui G, Parent M, Mansour S, Farand P, Hay A, Jolicoeur M. A MULTICENTER STUDY ON CARDIOLOGY PATIENTS’ PERSPECTIVE FOR GRANTING RESEARCHERS ACCESS TO THEIR INFORMATION FOUND IN ADMINISTRATIVE HEALTH DATABASES IN QUÉBEC. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Zhao X, Condruz S, Chen J, Jolicoeur M. A quantitative metabolomics study of high sodium response in Clostridium acetobutylicum ATCC 824 acetone-butanol-ethanol (ABE) fermentation. Sci Rep 2016; 6:28307. [PMID: 27321153 PMCID: PMC4913259 DOI: 10.1038/srep28307] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 05/31/2016] [Indexed: 01/06/2023] Open
Abstract
Hemicellulose hydrolysates, sugar-rich feedstocks used in biobutanol refinery, are normally obtained by adding sodium hydroxide in the hydrolyze process. However, the resulting high sodium concentration in the hydrolysate inhibits ABE (acetone-butanol-ethanol) fermentation, and thus limits the use of these low-cost feedstocks. We have thus studied the effect of high sodium on the metabolic behavior of Clostridium acetobutyricum ATCC 824, with xylose as the carbon source. At a threshold sodium concentration of 200 mM, a decrease of the maximum cell dry weight (−19.50 ± 0.85%) and of ABE yield (−35.14 ± 3.50% acetone, −33.37 ± 0.74% butanol, −22.95 ± 1.81% ethanol) were observed compared to control culture. However, solvents specific productivities were not affected by supplementing sodium. The main effects of high sodium on cell metabolism were observed in acidogenesis, during which we observed the accumulation of ATP and NADH, and the inhibition of the pentose phosphate (PPP) and the glycolytic pathways with up to 80.73 ± 1.47% and 68.84 ± 3.42% decrease of the associated metabolic intermediates, respectively. However, the NADP+-to-NADPH ratio was constant for the whole culture duration, a phenomenon explaining the robustness of solvents specific productivities. Therefore, high sodium, which inhibited biomass growth through coordinated metabolic effects, interestingly triggered cell robustness on solvents specific productivity.
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Affiliation(s)
- Xinhe Zhao
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, Centre-ville Station, Montreal, Quebec, H3C 3A7, Canada
| | - Stefan Condruz
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, Centre-ville Station, Montreal, Quebec, H3C 3A7, Canada
| | - Jingkui Chen
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, Centre-ville Station, Montreal, Quebec, H3C 3A7, Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, Centre-ville Station, Montreal, Quebec, H3C 3A7, Canada
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Noel S, Fortier C, Murschel F, Belzil A, Gaudet G, Jolicoeur M, De Crescenzo G. Co-immobilization of adhesive peptides and VEGF within a dextran-based coating for vascular applications. Acta Biomater 2016; 37:69-82. [PMID: 27039978 DOI: 10.1016/j.actbio.2016.03.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/11/2016] [Accepted: 03/30/2016] [Indexed: 11/25/2022]
Abstract
UNLABELLED Multifunctional constructs providing a proper environment for adhesion and growth of selected cell types are needed for most tissue engineering and regenerative medicine applications. In this context, vinylsulfone (VS)-modified dextran was proposed as a matrix featuring low-fouling properties as well as multiple versatile moieties. The displayed VS groups could indeed react with thiol, amine or hydroxyl groups, be it for surface grafting, crosslinking or subsequent tethering of biomolecules. In the present study, a library of dextran-VS was produced, grafted to aminated substrates and characterized in terms of degree of VS modification (%VS), cell-repelling properties and potential for the oriented grafting of cysteine-tagged peptides. As a bioactive coating of vascular implants, ECM peptides (e.g. RGD) as well as vascular endothelial growth factor (VEGF) were co-immobilized on one of the most suitable dextran-VS coating (%VS=ca. 50% of saccharides units). Both RGD and VEGF were efficiently tethered at high densities (ca. 1nmol/cm(2) and 50fmol/cm(2), respectively), and were able to promote endothelial cell adhesion as well as proliferation. The latter was enhanced to the same extent as with soluble VEGF and proved selective to endothelial cells over smooth muscle cells. Altogether, multiple biomolecules could be efficiently incorporated into a dextran-VS construct, while maintaining their respective biological activity. STATEMENT OF SIGNIFICANCE This work addresses the need for multifunctional coatings and selective cell response inherent to many tissue engineering and regenerative medicine applications, for instance, vascular graft. More specifically, a library of dextrans was first generated through vinylsulfone (VS) modification. Thoroughly selected dextran-VS provided an ideal platform for unbiased study of cell response to covalently grafted biomolecules. Considering that processes such as healing and angiogenesis require multiple factors acting synergistically, vascular endothelial growth factor (VEGF) was then co-immobilized with the cell adhesive RGD peptide within our dextran coating through a relevant strategy featuring orientation and specificity. Altogether, both adhesive and proliferative cues could be incorporated into our construct with additive, if not synergetic, effects.
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Ren X, Chen J, Deschênes JS, Tremblay R, Jolicoeur M. Glucose feeding recalibrates carbon flux distribution and favours lipid accumulation in Chlorella protothecoides through cell energetic management. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.01.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Arnold E, Hammami I, Chen J, Gupte S, Durocher Y, Jolicoeur M. Overexpression of G6PDH does not affect the behavior of HEK-293 clones stably expressing interferon-α2b. AIMS Bioengineering 2016. [DOI: 10.3934/bioeng.2016.3.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Fernandes de Sousa S, Bastin G, Jolicoeur M, Vande Wouwer A. Dynamic metabolic flux analysis using a convex analysis approach: Application to hybridoma cell cultures in perfusion. Biotechnol Bioeng 2015; 113:1102-12. [DOI: 10.1002/bit.25879] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/30/2015] [Accepted: 11/01/2015] [Indexed: 12/22/2022]
Affiliation(s)
| | - Georges Bastin
- Department of Mathematical Engineering; ICTEAM; Catholic University of Louvain; Louvain-La-Neuve Belgium
| | - Mario Jolicoeur
- Department of Chemical Engineering; Laboratory in Applied Metabolic Engineering; Polytechnic University of Montreal; Montréal Canada
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Murschel F, Zaimi A, Noel S, Jolicoeur M, De Crescenzo G. Specific Adsorption via Peptide Tags: Oriented Grafting and Release of Growth Factors for Tissue Engineering. Biomacromolecules 2015; 16:3445-54. [DOI: 10.1021/acs.biomac.5b00955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Frederic Murschel
- Department of Chemical Engineering and ‡Institute of
Biomedical Engineering,
Groupe de Recherche en Sciences et Technologies Biomédicales
(GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
| | - Aldo Zaimi
- Department of Chemical Engineering and ‡Institute of
Biomedical Engineering,
Groupe de Recherche en Sciences et Technologies Biomédicales
(GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
| | - Samantha Noel
- Department of Chemical Engineering and ‡Institute of
Biomedical Engineering,
Groupe de Recherche en Sciences et Technologies Biomédicales
(GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
| | - Mario Jolicoeur
- Department of Chemical Engineering and ‡Institute of
Biomedical Engineering,
Groupe de Recherche en Sciences et Technologies Biomédicales
(GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
| | - Gregory De Crescenzo
- Department of Chemical Engineering and ‡Institute of
Biomedical Engineering,
Groupe de Recherche en Sciences et Technologies Biomédicales
(GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
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de Hemptinne Q, L'Allier P, Jolicoeur M, Asgar A, Bonan R, Crépeau J, de Guise P, Dorval J, Doucet S, Gallo R, Gosselin G, Grégoire J, Ibrahim R, Ly H, Nosair M, Tanguay J. REAL-WORLD CLINICAL OUTCOMES ACCORDING TO DUAL ANTI-PLATELET THERAPY REGIMEN AMONG PATIENTS UNDERGOING PERCUTANEOUS CORONARY INTERVENTION: SINGLE CENTER EXPERIENCE IN CANADA. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Robitaille J, Chen J, Jolicoeur M. A Single Dynamic Metabolic Model Can Describe mAb Producing CHO Cell Batch and Fed-Batch Cultures on Different Culture Media. PLoS One 2015; 10:e0136815. [PMID: 26331955 PMCID: PMC4558054 DOI: 10.1371/journal.pone.0136815] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 08/07/2015] [Indexed: 11/18/2022] Open
Abstract
CHO cell culture high productivity relies on optimized culture medium management under fed-batch or perfused chemostat strategies enabling high cell densities. In this work, a dynamic metabolic model for CHO cells was further developed, calibrated and challenged using datasets obtained under four different culture conditions, including two batch and two fed-batch cultures comparing two different culture media. The recombinant CHO-DXB11 cell line producing the EG2-hFc monoclonal antibody was studied. Quantification of extracellular substrates and metabolites concentration, viable cell density, monoclonal antibody concentration and intracellular concentration of metabolite intermediates of glycolysis, pentose-phosphate and TCA cycle, as well as of energetic nucleotides, were obtained for model calibration. Results suggest that a single model structure with a single set of kinetic parameter values is efficient at simulating viable cell behavior in all cases under study, estimating the time course of measured and non-measured intracellular and extracellular metabolites. Model simulations also allowed performing dynamic metabolic flux analysis, showing that the culture media and the fed-batch strategies tested had little impact on flux distribution. This work thus paves the way to an in silico platform allowing to assess the performance of different culture media and fed-batch strategies.
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Affiliation(s)
- Julien Robitaille
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, C.P. 6079, Centre-ville Station, Montreal (Quebec), Canada
| | - Jingkui Chen
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, C.P. 6079, Centre-ville Station, Montreal (Quebec), Canada
| | - Mario Jolicoeur
- Research Laboratory in Applied Metabolic Engineering, Department of Chemical Engineering, École Polytechnique de Montréal, C.P. 6079, Centre-ville Station, Montreal (Quebec), Canada
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Tétreault-Laflamme A, Nguyen T, Vincent F, Saad F, Benoit N, Fortin B, Lambert C, Jolicoeur M. PO-1048: HDR brachytherapy combined to EBRT for prostate cancer: analysis of toxicities and PSA bounce of a phase II trial. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41040-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ghorbaniaghdam A, Henry O, Jolicoeur M. An in-silico study of the regulation of CHO cells glycolysis. J Theor Biol 2014; 357:112-22. [PMID: 24801859 DOI: 10.1016/j.jtbi.2014.04.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 04/15/2014] [Accepted: 04/24/2014] [Indexed: 10/25/2022]
Abstract
In this work, a kinetic-metabolic model previously developed for CHO cells is used to study glycolysis regulation. The model is assessed for its biological relevance by analyzing its ability to simulate metabolic events induced following a hypoxic perturbation. Feedback and feedforward regulatory mechanisms known to occur to either inhibit or activate fluxes of glycolysis, are implemented in various combined scenarios and their effects on the metabolic response were analyzed. This study aims at characterizing the role of intermediates of glycolysis and of the cell energetic state, described as the AMP-to-ATP ratio, as inhibitors and activators of glycolysis pathway. In addition to the glycolysis pathway, we here describe the transient metabolic response of pathways that are connected to glycolysis, such as the pentose phosphate pathway, TCA cycle, cell bioenergetics system, glutamine and amino acids metabolisms. Taken individually, each regulatory mechanism leads to an oscillatory behavior in response to a hypoxic perturbation, while their combination clearly damps oscillations. However, only the addition of the cell energetic state to the regulatory mechanisms results in a non-oscillating response leading to metabolic flux rate rearrangement corresponding to the anaerobic metabolism expected to prevail under hypoxic conditions. We thus demonstrate in this work, from model simulations, that the robustness of a cell energetic metabolism can be described from a combination of feedback and feedforward inhibition and activation regulatory mechanisms of glycolysis fluxes, involving intermediates of glycolysis and the cell energetic state itself.
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Affiliation(s)
- Atefeh Ghorbaniaghdam
- Canada Research Chair in Applied Metabolic Engineering, Canada; Department of Chemical Engineering, École Polytechnique de Montréal, P.O. box 6079, Centre-ville Station, Montréal, Québec H3C 3A7, Canada
| | - Olivier Henry
- Department of Chemical Engineering, École Polytechnique de Montréal, P.O. box 6079, Centre-ville Station, Montréal, Québec H3C 3A7, Canada
| | - Mario Jolicoeur
- Canada Research Chair in Applied Metabolic Engineering, Canada; Department of Chemical Engineering, École Polytechnique de Montréal, P.O. box 6079, Centre-ville Station, Montréal, Québec H3C 3A7, Canada.
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Sheikholeslami Z, Jolicoeur M, Henry O. Elucidating the effects of postinduction glutamine feeding on the growth and productivity of CHO cells. Biotechnol Prog 2014; 30:535-46. [PMID: 24692260 DOI: 10.1002/btpr.1907] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 03/14/2014] [Indexed: 12/11/2022]
Abstract
Inducible mammalian expression systems are increasingly being used for the production of valuable therapeutics. In such system, maximizing the product yield is achieved by carefully balancing the biomass concentration during the production phase and the specific productivity of the cells. These two factors are largely determined by the availability of nutrients and/or the presence of toxic waste metabolites in the culture environment. Glutamine is one of the most important components of cell culture medium, since this substrate is an important building block and source of energy for biomass and recombinant protein production. Its metabolism, however, ultimately leads to the formation of ammonia, a well known inhibitor of cellular growth and productivity. In this work, we show that nutrient feeding post-induction can greatly enhance the product yield by alleviating early limitations encountered in batch. Moreover, varying the amount of glutamine in the feed yielded two distinct culture behaviors post-induction; whereas excess glutamine allowed to reach greater cell concentrations, glutamine-limited fed-batch led to increased cell specific productivity. These two conditions also showed distinctive lactate metabolism. To further assess the physiological impact of glutamine levels on the cells, a comparative (13) C-metabolic flux analysis was conducted and a number of key intracellular fluxes were found to be affected by the amount of glutamine present in the feed during the production phase. Such information may provide useful clues for the identification of physiological markers of cell growth and productivity that could further guide the optimization of inducible expression systems.
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Affiliation(s)
- Zahra Sheikholeslami
- Dépt. de Génie Chimique, École Polytechnique de Montréal, C.P. 6079, Succ. Centre-ville, Montréal, Québec, Canada, H3C 3A7
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Ghorbaniaghdam A, Chen J, Henry O, Jolicoeur M. Analyzing clonal variation of monoclonal antibody-producing CHO cell lines using an in silico metabolomic platform. PLoS One 2014; 9:e90832. [PMID: 24632968 PMCID: PMC3954614 DOI: 10.1371/journal.pone.0090832] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 02/04/2014] [Indexed: 12/12/2022] Open
Abstract
Monoclonal antibody producing Chinese hamster ovary (CHO) cells have been shown to undergo metabolic changes when engineered to produce high titers of recombinant proteins. In this work, we have studied the distinct metabolism of CHO cell clones harboring an efficient inducible expression system, based on the cumate gene switch, and displaying different expression levels, high and low productivities, compared to that of the parental cells from which they were derived. A kinetic model for CHO cell metabolism was further developed to include metabolic regulation. Model calibration was performed using intracellular and extracellular metabolite profiles obtained from shake flask batch cultures. Model simulations of intracellular fluxes and ratios known as biomarkers revealed significant changes correlated with clonal variation but not to the recombinant protein expression level. Metabolic flux distribution mostly differs in the reactions involving pyruvate metabolism, with an increased net flux of pyruvate into the tricarboxylic acid (TCA) cycle in the high-producer clone, either being induced or non-induced with cumate. More specifically, CHO cell metabolism in this clone was characterized by an efficient utilization of glucose and a high pyruvate dehydrogenase flux. Moreover, the high-producer clone shows a high rate of anaplerosis from pyruvate to oxaloacetate, through pyruvate carboxylase and from glutamate to α-ketoglutarate, through glutamate dehydrogenase, and a reduced rate of cataplerosis from malate to pyruvate, through malic enzyme. Indeed, the increase of flux through pyruvate carboxylase was not driven by an increased anabolic demand. It is in fact linked to an increase of the TCA cycle global flux, which allows better regulation of higher redox and more efficient metabolic states. To the best of our knowledge, this is the first time a dynamic in silico platform is proposed to analyze and compare the metabolomic behavior of different CHO clones.
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Affiliation(s)
- Atefeh Ghorbaniaghdam
- Canada Research Chair in Applied Metabolic Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
- Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
| | - Jingkui Chen
- Canada Research Chair in Applied Metabolic Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
- Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
| | - Olivier Henry
- Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
| | - Mario Jolicoeur
- Canada Research Chair in Applied Metabolic Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
- Department of Chemical Engineering, École Polytechnique de Montréal, Montréal, Québec, Canada
- * E-mail:
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