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Maheshwari G, Maitre P, Sarkar J, Raveendran V, Phurailatpam R, Singh P, Murthy V. Late Urinary Toxicity and QoL with Curative Radiotherapy for High-Risk Prostate Cancer: Dose-Effect Relations in the POP-RT Randomized Phase III Trial. Int J Radiat Oncol Biol Phys 2023; 117:S94-S95. [PMID: 37784610 DOI: 10.1016/j.ijrobp.2023.06.426] [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) Whole pelvic radiotherapy (WPRT) showed better biochemical failure-free survival and metastasis-free survival than prostate-only radiotherapy (PORT) in the phase III randomized POP-RT trial for high and very high-risk prostate cancer, albeit with higher RTOG grade 2 late urinary toxicity. We report updated long term, symptom-wise comparison and dose-effect relations from this trial. MATERIALS/METHODS Late urinary toxicity, and cumulative severity of each symptom over the follow-up period was graded using CTCAE v5.0. Grade 2+ toxicities were compared between the trial arms by chi square test. Bladder dosimetry in 5-Gy increments (V5, V10, V15...V65 Gy, V68 Gy) from the trial database of approved radiotherapy plans, was compared for each urinary symptom and overall late gr2+ toxicity by student t-test. Observed differences in dosimetric parameters were tested using multivariable logistic regression analysis, including age at diagnosis, known diabetes, tumor stage, trial arm, and prior transurethral resection of prostate (TURP). Urinary QOL scores were compared between arms using generalised linear mixed model. RESULTS Combined late symptom-wise toxicity and dose-volume data were available for analysis for 193/224 patients. At a median follow-up of 75 months, cumulative CTCAE gr2+ late urinary toxicity remained higher with WPRT than PORT, though not statistically significant (36.5% vs 26.8%, p = 0.15). Grade 3 toxicity was low and similar in both arms. Symptom-wise cumulative rates showed no significant difference between arms (Table 1). Dosimetric comparison showed significantly higher bladder V5-V15 in patients with gr2+ toxicity over those with CONCLUSION Compared to prostate-only radiotherapy, whole pelvic radiotherapy resulted similar Grade 3 urinary toxicity of about 5% with about 10% higher cumulative grade 2+ urinary toxicity over long term follow up. This difference was not reflected in patient-reported QOL. WPRT particularly increased urgency and hematuria. Larger bladder volume being irradiated with 5Gy to 15Gy dose range could contribute to increase in urinary symptoms.
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Affiliation(s)
- G Maheshwari
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - P Maitre
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - J Sarkar
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - V Raveendran
- Department of Medical Physics, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - R Phurailatpam
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - P Singh
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - V Murthy
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
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Maitre P, Haris M, Portner R, Hoskin P, Hudson A, Wylie J, Logue J, Conroy R, Tran A, Serra M, Croxford W, Song Y, Oates J, Ramani V, Clarke N, Choudhury A. Outcomes in Locally Advanced Non-Metastatic Prostate Cancer Presenting with Low PSA at Diagnosis. Int J Radiat Oncol Biol Phys 2023; 117:e413-e414. [PMID: 37785368 DOI: 10.1016/j.ijrobp.2023.06.1561] [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) Men with low serum prostate-specific antigen (PSA) and high Gleason grade group (GGG) are thought to have poor outcomes compared to high PSA secretors. However, there is limited outcome data to support this. We report clinical outcomes from a single-institutional cohort of men presenting with locally advanced prostate cancer but low serum PSA. MATERIALS/METHODS Data from electronic database of a UK tertiary cancer center was acquired for men with histological diagnosis of prostate adenocarcinoma, GGG 4 or 5, stage ≥cT3a, and PSA <10ug/L at diagnosis. Men with metastatic disease, or prior androgen deprivation therapy (ADT) were excluded. Biochemical progression was defined as per Phoenix criteria (PSA > nadir+2) for primary radiotherapy, or PSA >0.2 ug/L after primary prostatectomy (and post-operative radiotherapy, if received). Overall survival (OS, from date of diagnosis to death), metastasis-free survival (MFS, from diagnosis to first recorded metastasis or death), and biochemical progression free survival (bPFS, from diagnosis to biochemical progression or death) were estimated by Kaplan Meier method, and multivariable analysis performed using Cox proportional hazards method. RESULTS Medical records of 7,200 men presenting with non-metastatic prostate cancer from 2013 to 2021 were screened, of which 270 men satisfying the eligibility criteria were included for this study. Initial analysis of 123 men shows median PSA at presentation 7.1 ug/L (IQR 5.6-8.5), and median age 70 years (IQR 65-75). Histology was GGG 4 in 47.6% and 5 in 52.4%. Tumor stage was cT3a in 56.6%, cT3b in 36.9%, and T4 in 6.6%. Pelvic nodes were involved in 5% patients. Majority (83.7%) were treated with radical radiotherapy (external beam alone 64.2%, brachytherapy boost 19.5%), with 24 months ADT; 11.4% underwent radical prostatectomy, and 4.9% received ADT alone. Three men (2.4%) received docetaxel, and one received abiraterone. At a median follow up of 66 months (IQR 27-77), 36 (29.3%) patients had biochemical failure. Total 23 (18.6%) patients had metastases at recurrence, which were visceral in 4%, bone-only in 10%, and nodal-only in 4%. Total 38 (30.6%) patients had died, 23% with prostate cancer and 11% due to other causes. Five-year bPFS was 65.9%, MFS 69.0%, and OS was 77.4%. GGG 5 (versus 4) was associated with significantly worse 5-year bPFS (59.4% vs 73.9%, HR 1.8, 95% CI 1.0-3.2, p = 0.05) and MFS (59.2% vs 81.6%, HR 2.2, 1.2-4.2, p = 0.02). On multivariable analysis including age and PSA at diagnosis, only GGG 5 was associated with worse bPFS (HR 1.8, 1.0-3.3, p = 0.05) and MFS (HR 2.42, 1.25-4.67, p = 0.009). CONCLUSION Men with low secreting but high Gleason grade group prostate cancer are a relatively rare group with poor clinical outcomes despite being non-metastatic. Ongoing work (expected completion June 2023) will analyze remaining cases, and compare outcomes within an expanded multicentric cohort with matched controls having elevated PSA at presentation.
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Affiliation(s)
- P Maitre
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - M Haris
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - R Portner
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - P Hoskin
- Division of Cancer Sciences, University of Manchester, Manchester, United Kingdom
| | - A Hudson
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - J Wylie
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - J Logue
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - R Conroy
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - A Tran
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - M Serra
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - W Croxford
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Y Song
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - J Oates
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - V Ramani
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - N Clarke
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - A Choudhury
- Division of Cancer Sciences, University of Manchester, Manchester, United Kingdom; Department of Clinical Oncology, The Christie NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK, Manchester, United Kingdom
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Murthy V, Kashid SR, Vadassery A, Pal M, Maitre P, Arora A, Singh P, Menon S, Bakshi G, Joshi A, Prakash G. Prospective Comparative Study of Quality of Life in Bladder Cancer Patients Undergoing Cystectomy or Bladder Preservation. Int J Radiat Oncol Biol Phys 2023; 117:S112. [PMID: 37784294 DOI: 10.1016/j.ijrobp.2023.06.440] [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) Health-related Quality of life (HRQOL) may be decisive when different treatments yield comparable survival outcomes. We compared QOL in patients undergoing radical cystectomy with ileal conduit (RCIC) or bladder preservation (BP) with (chemo)radiotherapy for bladder cancer. MATERIALS/METHODS Patients with histological diagnosis of bladder cancer, stage T1-T4, N0-N1, M0 with a minimum follow-up of 6 months from the last treatment intervention (RCIC or BP) and alive without disease at the time of QOL assessment were eligible for inclusion. After ethics committee approval, two HRQOL instruments were translated, validated and administered: Bladder cancer index (BCI) for bladder cancer-specific HRQOL, which includes 36 items under three domains - bladder, bowel and sexual function and the EORTC QLQ C30 which includes 30 items under three domains - functional, symptom and global health. The mean QOL scores across various domains and specific questions were compared between the two treatment groups using the independent t-test. RESULTS Of the 104 patients enrolled, 56 had RCIC, and 48 received BP, and included 95 (91.3%) males. The median time from treatment completion to QOL assessment was 22 months (IQR 10-56). The median age for the entire cohort was 62 years (IQR 55-68), 65.5 years (IQR 55-71) in BP and 59.5 years (IQR 55-66) in RCIC. Overall, mean BCI urinary scores and bowel scores were high in both groups, with no significant difference in function or bother subdomains between the two groups (Table 1). Overall, BCI sexual scores were low in both the groups but significantly better after BP (BPmean 56.9, RCICmean 41.5, p = 0.01). Mean scores for sexual function BPmean 38.4 and RCIC mean 25 p (0.07) and sexual bother BPmean 81 RCICmean 62 (p 0.02) subdomains. There was no significant difference in EORTC QOL outcomes in functional (BPmean 91.4, RCICmean 88.7 p 0.23), symptom (BPmean 89.8, RCICmean 89, p = 0.68) and global health scale (BPmean 76.8, RCICmean 78.5, p = 0.69) in both groups. On question-wise assessment, the ability to perform an exercise (BPmean 94.2, RCICmean 85, p = 0.06) and urinary leakage at night time (BPmean 91.7, RCICmean 77.6, p = 0.01) were better in the BP group, while scores for blood in the urine (BPmean 89.1, RCICmean 97, p = 0.05) were better in the RCIC group compared to BP. CONCLUSION Overall, QOL was good in both groups in the urinary and bowel domains while it was low in the sexual domain. However, bladder preservation performed significantly better in the sexual domain than RCIC.
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Affiliation(s)
- V Murthy
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - S R Kashid
- Department of Radiation Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - A Vadassery
- Department of Radiation Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - M Pal
- Department of Surgical Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - P Maitre
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - A Arora
- Department of Surgical Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - P Singh
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - S Menon
- Department of Pathology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - G Bakshi
- Department of Surgical Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - A Joshi
- Department of Medical Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
| | - G Prakash
- Department of Surgical Oncology, Tata Memorial Hospital, HBNI, Mumbai, India
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Murthy V, Maitre P, Singh M, Pal M, Arora A, Pujari L, Kapoor A, Pandey H, Sharma R, Gudipudi D, Joshi A, Prabhash K, Noronha V, Menon S, Mehta P, Bakshi G, Prakash G. Study Protocol of the Bladder Adjuvant RadioTherapy (BART) Trial: A Randomised Phase III Trial of Adjuvant Radiotherapy Following Cystectomy in Bladder Cancer. Clin Oncol (R Coll Radiol) 2023; 35:e506-e515. [PMID: 37208232 DOI: 10.1016/j.clon.2023.04.010] [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: 02/13/2023] [Revised: 04/10/2023] [Accepted: 04/28/2023] [Indexed: 05/21/2023]
Abstract
AIMS To assess the efficacy and safety of adjuvant radiotherapy in patients with high-risk muscle-invasive bladder cancer (MIBC) following radical cystectomy (RC) and chemotherapy. MATERIALS AND METHODS The BART (Bladder Adjuvant RadioTherapy) trial is an ongoing multicentric, randomised, phase III trial comparing the efficacy and safety of adjuvant radiotherapy versus observation in patients with high-risk MIBC. The key eligibility criteria include ≥pT3, node-positive (pN+), positive margins and/or nodal yield <10, or, neoadjuvant chemotherapy for cT3/T4/N+ disease. In total, 153 patients will be accrued and randomised, in a 1:1 ratio, to either observation (standard arm) or adjuvant radiotherapy (test arm) following surgery and chemotherapy. Stratification parameters include nodal status (N+ versus N0) and chemotherapy (neoadjuvant chemotherapy versus adjuvant chemotherapy versus no chemotherapy). For patients in the test arm, adjuvant radiotherapy to cystectomy bed and pelvic nodes is planned with intensity-modulated radiotherapy to a dose of 50.4 Gy in 28 fractions using daily image guidance. All patients will follow-up with 3-monthly clinical review and urine cytology for 2 years and subsequently 6 monthly until 5 years, with contrast-enhanced computed tomography abdomen pelvis 6 monthly for 2 years and annually until 5 years. Physician-scored toxicity using Common Terminology Criteria for Adverse Events version 5.0 and patient-reported quality of life using the Functional Assessment of Cancer Therapy - Colorectal questionnaire is recorded pre-treatment and at follow-up. ENDPOINTS AND STATISTICS The primary endpoint is 2-year locoregional recurrence-free survival. The sample size calculation was based on the estimated improvement in 2-year locoregional recurrence-free survival from 70% in the standard arm to 85% in the test arm (hazard ratio 0.45) using 80% statistical power and a two-sided alpha error of 0.05. Secondary endpoints include disease-free survival, overall survival, acute and late toxicity, patterns of failure and quality of life. CONCLUSION The BART trial aims to evaluate whether contemporary radiotherapy after standard-of-care surgery and chemotherapy reduces pelvic recurrences safely and also potentially affects survival in high-risk MIBC.
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Affiliation(s)
- V Murthy
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India.
| | - P Maitre
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - M Singh
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - M Pal
- Department of Surgical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - A Arora
- Department of Surgical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - L Pujari
- Department of Radiation Oncology, HBCH & MPMMMC, Varanasi, India
| | - A Kapoor
- Department of Medical Oncology, HBCH & MPMMMC, Varanasi, India
| | - H Pandey
- Department of Surgical Oncology, HBCH & MPMMMC, Varanasi, India
| | - R Sharma
- Department of Uro-Oncology, Basavatarakam Indo-American Cancer Hospital and Research Institute, Hyderabad, India
| | - D Gudipudi
- Department of Uro-Oncology, Basavatarakam Indo-American Cancer Hospital and Research Institute, Hyderabad, India
| | - A Joshi
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - K Prabhash
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - V Noronha
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - S Menon
- Department of Pathology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - P Mehta
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - G Bakshi
- Department of Surgical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - G Prakash
- Department of Surgical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
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Chilukuri S, Mallick I, Agrawal A, Maitre P, Arunsingh M, James FV, Kataria T, Narang K, Gurram BC, Anand AK, Utreja N, Dutta D, Pavamani S, Mitra S, Mallik S, Mahale N, Chandra M, Chinnachamy AN, Shahid T, Raghunathan MS, Kannan V, Mohanty SK, Basu T, Hotwani C, Panigrahi G, Murthy V. Multi-Institutional Clinical Outcomes of Biopsy Gleason Grade Group 5 Prostate Cancers Treated With Contemporary High-Dose Radiation and Long-Term Androgen Deprivation Therapy. Clin Oncol (R Coll Radiol) 2023; 35:454-462. [PMID: 37061457 DOI: 10.1016/j.clon.2023.03.018] [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: 01/18/2023] [Revised: 03/14/2023] [Accepted: 03/31/2023] [Indexed: 04/08/2023]
Abstract
AIMS This multicentric retrospective study reports long-term clinical outcomes of non-metastatic grade group 5 prostate cancers treated with external beam radiotherapy (EBRT) alone with long-term androgen deprivation therapy (ADT). MATERIALS AND METHODS Patients treated across 19 institutions were studied. The key endpoints that were evaluated were 5-year biochemical recurrence-free survival (bRFS), metastases-free survival (MFS), overall survival, together with EBRT-related acute and late toxicities. The impact of various prognostic factors on the studied endpoints was analysed using univariate and multivariate analyses. RESULTS Among the 462 patients, 88% (405) had Gleason 9 disease and 31% (142) had primary Gleason pattern 5. A prostate-specific membrane antigen positron emission tomography-computed tomography scan was used for staging in 33% (153), 80% (371) were staged as T3/T4 and 30% (142) with pelvic nodal disease. The median ADT duration was 24 months; 66% received hypofractionated EBRT and 71.4% (330) received pelvic nodal irradiation. With a median follow-up of 56 months, the 5-year bRFS, MFS and overall survival were 73.1%, 77.4% and 90.5%, respectively. Primary Gleason pattern 5 was associated with worse bRFS, MFS and overall survival with hazard ratios of 0.51 (95% confidence interval 0.35 to 0.73, P < 0.001), 0.64 (95% confidence interval 0.43 to 0.96, P = 0.031) and 0.52 (95% confidence interval 0.28 to 0.97, P = 0.040), respectively, whereas pelvic nodal disease was associated with worse bRFS (hazard ratio 0.67, 95% confidence interval 0.46 to 0.98, P = 0.039) and MFS (hazard ratio 0.56, 95% confidence interval 0.37 to 0.85, P = 0.006). The acute and late radiation-related toxicities were low overall and pelvic nodal irradiation was associated with higher toxicities. CONCLUSION Contemporary EBRT and long-term ADT led to excellent 5-year clinical outcomes and low rates of toxicity in this cohort of non-metastatic grade group 5 prostate cancers. Primary Gleason pattern 5 and pelvic node disease portends inferior clinical outcomes.
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Affiliation(s)
- S Chilukuri
- Department of Radiation Oncology, Apollo Proton Cancer Centre, Chennai, Tamil Nadu, India
| | - I Mallick
- Department of Radiation Oncology, Tata Medical Center, Kolkata, West Bengal, India
| | - A Agrawal
- Department of Radiation Oncology, Tata Memorial Hospital and ACTREC, Homi Bhabha National Institute, Mumbai, India
| | - P Maitre
- Department of Radiation Oncology, Tata Memorial Hospital and ACTREC, Homi Bhabha National Institute, Mumbai, India
| | - M Arunsingh
- Department of Radiation Oncology, Tata Medical Center, Kolkata, West Bengal, India
| | - F V James
- Department of Radiation Oncology, Regional Cancer Centre, Thiruvananthapuram, Kerala, India
| | - T Kataria
- Division of Radiation Oncology, Cancer Institute, Medanta, Sector-38, Gurugram, India
| | - K Narang
- Division of Radiation Oncology, Cancer Institute, Medanta, Sector-38, Gurugram, India
| | - B C Gurram
- Department of Radiation Oncology, Yashoda Cancer Institute, Somajiguda, Hyderabad, India
| | - A K Anand
- Max Super Speciality Hospital, Saket, New Delhi, India
| | - N Utreja
- Max Super Speciality Hospital, Saket, New Delhi, India
| | - D Dutta
- Department of Radiation Oncology, Amrita Institute of Medical Sciences, Kochi, India
| | - S Pavamani
- Department of Radiation Oncology, Christian Medical College, Vellore, India
| | - S Mitra
- Department of Radiation Oncology, Rajiv Gandhi Cancer Institute and Research Centre, New Delhi, India
| | - S Mallik
- Department of Radiation Oncology, Narayana Superspeciality Hospital, Howrah, India
| | - N Mahale
- Nirali Memorial Radiation Centre and Bharat Cancer Hospital, Surat, India
| | - M Chandra
- Department of Radiation Oncology, Jupiter Hospital, Thane, India
| | - A N Chinnachamy
- Department of Radiation Oncology, VN Cancer Centre, G. Kuppuswamy Naidu Memorial Hospital, Coimbatore, India
| | - T Shahid
- Department of Radiation Oncology, Apollo Multispeciality Hospitals, Kolkata, India
| | - M S Raghunathan
- Department of Radiotherapy, Kovai Medical Centre and Hospital, Coimbatore, India
| | - V Kannan
- Department of Radiation Oncology, P.D Hinduja National Hospital and Medical Research Centre, Mumbai, India
| | - S K Mohanty
- Department of Radiation Oncology, Sterling Cancer Hospital, Rajkot, Gujrat, India
| | - T Basu
- Department of Radiation Oncology, HCG Cancer Centre, Mumbai, India
| | - C Hotwani
- Department of Radiation Oncology, Alexis Multi-Speciality Hospital, Nagpur, India
| | - G Panigrahi
- Department of Radiation Oncology, Tata Memorial Hospital and ACTREC, Homi Bhabha National Institute, Mumbai, India
| | - V Murthy
- Department of Radiation Oncology, Tata Memorial Hospital and ACTREC, Homi Bhabha National Institute, Mumbai, India.
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Mehta P, Mohite A, Maitre P, Agarwal A, Rangarajan V, Murthy V. Predictive Value of Ga68-PSMA PETCT-Based Response to Neoadjuvant Androgen Deprivation Therapy in Node Positive Prostate Cancer Treated with Radical Radiotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.461] [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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Menon S, Shah A, Sali A, Prakash G, Bakshi G, Pal M, Joshi A, Murthy V, Maitre P, Arora A, Desai S. Concordance of histological grade between pre-operative biopsy and resection specimen in penile squamous cell carcinoma. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)02457-0] [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: 11/11/2022] Open
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Chopade P, David S, Panigrahi G, Singh P, Maitre P, Murthy V. PD-0413 Outcomes in pelvic versus common iliac node positive prostate cancer treated with curative RT. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02848-1] [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: 10/18/2022]
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Murthy V, Chilukuri S, Mallick I, Maitre P, Agarwal A, Moses A, James F, Narang K, Kataria T, Anand A, Dutta D, Mitra S, Pavamani S, Mallick S, Mahale N, Chandra M, Narayan A, Shahid T, Sairam M, Kannan V, Mohanty S, Basu T, Hotwani C, G B. OC-0606 Multi-institutional outcomes of Gleason grade group 5 prostate cancers treated with EBRT and ADT. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02628-7] [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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Paciotti R, Corinti D, Maitre P, Coletti C, Re N, Chiavarino B, Crestoni ME, Fornarini S. From Preassociation to Chelation: A Survey of Cisplatin Interaction with Methionine at Molecular Level by IR Ion Spectroscopy and Computations. J Am Soc Mass Spectrom 2021; 32:2206-2217. [PMID: 34236851 PMCID: PMC8397306 DOI: 10.1021/jasms.1c00152] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/23/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Methionine (Met) plays an important role in the metabolism of cisplatin anticancer drug. Yet, methionine platination in aqueous solution presents a highly complex pattern of interconnected paths and intermediates. This study reports on the reaction of methionine with the active aqua form of cisplatin, cis-[PtCl(NH3)2(H2O)]+, isolating the encounter complex of the reactant pair, {cis-[PtCl(NH3)2(H2O)]+·Met}, by electrospray ionization. In the unsolvated state, charged intermediates are characterized for their structure and photofragmentation behavior by IR ion spectroscopy combined with quantum-chemical calculations, obtaining an outline of the cisplatin-methionine reaction at a molecular level. To summarize the major findings: (i) the {cis-[PtCl(NH3)2(H2O)]+·Met} encounter complex, lying on the reaction coordinate of the Eigen-Wilkins preassociation mechanism for ligand substitution, is delivered in the gas phase and characterized by IR ion spectroscopy; (ii) upon vibrational excitation, ligand exchange occurs within {cis-[PtCl(NH3)2(H2O)]+·Met}, releasing water and cis-[PtCl(NH3)2(Met)]+, along the calculated energy profile; (iii) activated cis-[PtCl(NH3)2(Met)]+ ions undergo NH3 departure, forming a chelate complex, [PtCl(NH3)(Met)]+, whose structure is congruent with overwhelming S-Met ligation as the primary coordination step. The latter process involving ammonia loss marks a difference with the prevailing chloride replacement in protic solvent, pointing to the effect of a low-polarity environment.
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Affiliation(s)
- Roberto Paciotti
- Dipartimento
di Farmacia, Università G. D’Annunzio
Chieti-Pescara, Via dei
Vestini 31, Chieti I-66100, Italy
| | - Davide Corinti
- Dipartimento
di Chimica e Tecnologie del Farmaco, Università
di Roma “La Sapienza”, I-00185 Roma, Italy
| | - Philippe Maitre
- Institut
de Chimie Physique, Université Paris-Saclay,
CNRS, F-91405 Orsay, France
| | - Cecilia Coletti
- Dipartimento
di Farmacia, Università G. D’Annunzio
Chieti-Pescara, Via dei
Vestini 31, Chieti I-66100, Italy
| | - Nazzareno Re
- Dipartimento
di Farmacia, Università G. D’Annunzio
Chieti-Pescara, Via dei
Vestini 31, Chieti I-66100, Italy
| | - Barbara Chiavarino
- Dipartimento
di Chimica e Tecnologie del Farmaco, Università
di Roma “La Sapienza”, I-00185 Roma, Italy
| | - Maria Elisa Crestoni
- Dipartimento
di Chimica e Tecnologie del Farmaco, Università
di Roma “La Sapienza”, I-00185 Roma, Italy
| | - Simonetta Fornarini
- Dipartimento
di Chimica e Tecnologie del Farmaco, Università
di Roma “La Sapienza”, I-00185 Roma, Italy
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11
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Mittal R, Murthy V, Krishnatry R, Maitre P. PD-0852 Recommendations and clinical validation of inguinal CTV delineation in penile cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07131-0] [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: 11/15/2022]
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12
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Sood S, Pathare P, Maitre P, Agarwal A, Rangarajan V, Murthy V. PD-0808 Patterns of failure in Ga68-PSMA PETCT at rising PSA post radical radiotherapy for prostate cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07087-0] [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: 10/20/2022]
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13
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Cruz-Ortiz AF, Molina FL, Maitre P, Pino GA. Guanine Tautomerism in Ionic Complexes with Ag + Investigated by IRMPD Spectroscopy and Mass Spectrometry. J Phys Chem B 2021; 125:7137-7146. [PMID: 34165305 DOI: 10.1021/acs.jpcb.1c03796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this paper, we present the IRMPD spectra of three ionic complexes between guanine (G) and silver (Ag+): [GAg-H2O]+, [GAgG]+ produced in the electrospray ionization source of the mass spectrometer, and [GAg]+ produced by collision induced dissociation of the [GAgG]+ complex. On the basis of the comparison of theoretically calculated IR spectra, we show that there are two isomers of each complex containing two different keto-amino (KA) tautomers of G (GKA(1,9) and GKA(1,7)). The observed isomers are the most stable structures in aqueous solution, and their experimentally estimated relative populations are in better agreement with the calculated relative populations in solution than in the gas phase, both at 298 K. We concluded that these observations suggest that GKA(1,9) and GKA(1,7) coexist in solution according to previous theoretical reports (Colominas, C.; et al. J. Am. Chem. Soc. 1996, 118, 6811). We were unable to find any evidence of the presence of the GEA(9), GKA(3,7), GKA(3,9), or GKA(7,9), whose relative stabilities in solution are strongly dependent on the theoretical method used to account for the solvent effect (Hanus, M.; et al. J. Am. Chem. Soc. 2003, 125, 7678).
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Affiliation(s)
- Andrés F Cruz-Ortiz
- INFIQC (CONICET-UNC), Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina.,Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina
| | - Franco L Molina
- INFIQC (CONICET-UNC), Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina.,Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina
| | - Philippe Maitre
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, 91405, Orsay, France
| | - Gustavo A Pino
- INFIQC (CONICET-UNC), Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina.,Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, X5000HUA Córdoba, Argentina
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14
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Gupta T, Maitre M, Maitre P, Goda JS, Krishnatry R, Chatterjee A, Moiyadi A, Shetty P, Epari S, Sahay A, Patil V, Jalali R. High-dose salvage re-irradiation for recurrent/progressive adult diffuse glioma: healing or hurting? Clin Transl Oncol 2021; 23:1358-1367. [PMID: 33528810 DOI: 10.1007/s12094-020-02526-0] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 11/13/2020] [Indexed: 12/21/2022]
Abstract
PURPOSE To report survival outcomes and identify prognostic factors of salvage re-irradiation (re-RT) in recurrent/progressive glioma. METHODS Medical records of patients treated with high-dose re-RT as part of multi-modality salvage therapy for recurrence/progression of adult diffuse glioma from 2010 to 2019 were analyzed retrospectively. RESULTS A total of 111 patients developing recurrent/progressive high-grade glioma after adequate upfront treatment at initial diagnosis were included. The first course of radiotherapy (RT) had been delivered to a median dose of 59.4 Gy with an inter-quartile range (IQR) of 54-60 Gy. Median time to recurrence/progression was 4.3 years (IQR = 2.3-7.4 years) while the median time to re-RT was 4.8 years (IQR = 3.6-7.9 years). Re-RT was delivered with intensity-modulated radiation therapy (IMRT) using 1.8 Gy/fraction to a median dose of 54 Gy (IQR = 50.4-55.8 Gy) for a cumulative median equivalent dose in 2-Gy fractions (EQD2) of 104.3 Gy (IQR = 102.6-109.4 Gy). At a median follow-up of 14 months after re-RT, the 1-year Kaplan-Meier estimates of post-re-RT progression-free survival (PFS) and overall survival (OS) were 42.8 and 61.8%, respectively. Univariate analysis identified histological grade at recurrence/progression; histological subtype; disease-free interval (DFI) and time interval between both courses of RT; performance status at re-RT; dose at re-RT and cumulative EQD2; isocitrate dehydrogenase (IDH) mutation; and O6-methyl-guanine DNA methyl transferase (MGMT) gene promoter methylation as significant prognostic factors. Preserved performance status, longer DFI, prolonged time interval between both courses of RT, and presence of IDH mutation were associated with significantly improved PFS on multi-variate analysis. However, only performance status retained independent prognostic significance for OS on multi-variate analysis. Post-treatment changes were seen in 33 (30%) patients on follow-up imaging, with higher cumulative dose (EQD2 ≥ 104.3 Gy) being associated with increased risk of post-re-RT pseudo-progression. CONCLUSION This clinical audit reports encouraging survival outcomes and identifies key prognostic factors associated with high-dose salvage re-RT in recurrent/progressive glioma.
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Affiliation(s)
- T Gupta
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India.
| | - M Maitre
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - P Maitre
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - J S Goda
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - R Krishnatry
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - A Chatterjee
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - A Moiyadi
- Department of Neuro-Surgical Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - P Shetty
- Department of Neuro-Surgical Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - S Epari
- Department of Pathology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - A Sahay
- Department of Pathology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - V Patil
- Department of Medical Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
| | - R Jalali
- Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC)/Tata Memorial Hospital (TMH), Tata Memorial Centre, Homi Bhabha National Institute (HBNI), Kharghar, Navi Mumbai, 410210, India
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15
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Chiavarino B, Sinha RK, Crestoni ME, Corinti D, Filippi A, Fraschetti C, Scuderi D, Maitre P, Fornarini S. Binding Motifs in the Naked Complexes of Target Amino Acids with an Excerpt of Antitumor Active Biomolecule: An Ion Vibrational Spectroscopy Assay. Chemistry 2021; 27:2348-2360. [PMID: 33175428 DOI: 10.1002/chem.202003555] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/30/2020] [Indexed: 11/06/2022]
Abstract
The structures of proton-bound complexes of 5,7-dimethoxy-4H-chromen-4-one (1) and basic amino acids (AAs), namely, histidine (His) and lysine (Lys), have been examined by means of mass spectrometry coupled with IR ion spectroscopy and quantum chemical calculations. This selection of systems is based on the fact that 1 represents a portion of glabrescione B, a natural small molecule of promising antitumor activity, while His and Lys are protein residues lining the cavity of the alleged receptor binding site. These species are thus a model of the bioactive adduct, although clearly the isolated state of the present study bears little resemblance to the complex biological environment. A common feature of [1+AA+H]+ complexes is the presence of a protonated AA bound to neutral 1, in spite of the fact that the gas-phase basicity of 1 is comparable to those of Lys and His. The carbonyl group of 1 acts as a powerful hydrogen-bond acceptor. Within [1+AA+H]+ the side-chain substituents (imidazole group for His and terminal amino group for Lys) present comparable basic properties to those of the α-amino group, taking part to a cooperative hydrogen-bond network. Structural assignment, relying on the comparative analysis of the infrared multiple photon dissociation (IRMPD) spectrum and calculated IR spectra for the candidate geometries, derives from an examination over two frequency ranges: 900-1800 and 2900-3700 cm-1 . Information gained from the latter one proved especially valuable, for example, pointing to the contribution of species characterized by an unperturbed carboxylic OH or imidazole NH stretching mode.
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Affiliation(s)
- Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy
| | - Rajeev K Sinha
- Department of Atomic and Molecular Physics, Manipal University, Manipal, 576104, Karnataka, India
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy
| | - Davide Corinti
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy
| | - Antonello Filippi
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy
| | - Caterina Fraschetti
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy
| | - Debora Scuderi
- Institut de Chimie Physique, UMR8000, CNRS, Université Paris-Saclay, 91405, Orsay, France
| | - Philippe Maitre
- Institut de Chimie Physique, UMR8000, CNRS, Université Paris-Saclay, 91405, Orsay, France
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli studi di Roma La Sapienza, P.le A. Moro 5, 00185, Roma, Italy
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16
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Olmedo WE, Jimenez LB, Cruz-Ortiz AF, Maitre P, Pino GA, Rossa M. Infrared Multiple Photon Dissociation Spectroscopy of Protonated Cyameluric Acid. J Phys Chem A 2021; 125:607-614. [PMID: 33410690 DOI: 10.1021/acs.jpca.0c09394] [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: 11/30/2022]
Abstract
The present study reports the first structural characterization of protonated cyameluric acid ([CA + H]+) in the gas phase, which paves the way for prospective bottom-up research on the condensed-phase chemistry of CA in the protonated form. A number of [CA + H]+ keto-enol isomers can a priori be produced as a result of protonation at available N and O positions of precursor neutral CA tautomers, yet ab initio computations predict different reduced [CA + H]+ isomer populations dominating the solution and gas phases that are involved in the ion generation process (i.e., electrospray ionization). Infrared multiple photon dissociation spectra were recorded in the 990-1900 and 3300-3650 cm-1 regions and compared with theoretical [B3LYP/6-311++G(d,p)] IR absorption spectra of several [CA + H]+ isomers, providing a satisfactory agreement for the most stable monohydroxy form in the gas phase, [1358a]+, yet the contribution of its nearly isoenergetic OH rotamer, [1358b]+, cannot be neglected. This is indicative of the occurrence of [CA + H]+ isomer interconversion reactions, assisted by protic solvent molecules, during their transfer into the gas phase. The results suggest that available O positions on neutral CA are energetically favored protonation sites in the gas phase.
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Affiliation(s)
- Walter E Olmedo
- INFIQC (CONICET - Universidad Nacional de Córdoba), Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Liliana B Jimenez
- INFIQC (CONICET - Universidad Nacional de Córdoba), Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Andrés F Cruz-Ortiz
- INFIQC (CONICET - Universidad Nacional de Córdoba), Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Philippe Maitre
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, 91405 Orsay, France
| | - Gustavo A Pino
- INFIQC (CONICET - Universidad Nacional de Córdoba), Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Maximiliano Rossa
- INFIQC (CONICET - Universidad Nacional de Córdoba), Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
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17
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Murthy V, Maitre P, Panigrahi G, Chaurasia D, Krishnatry R, Phurailatpam R, Prakash G, Bakshi G, Pal M, Menon S, Mahantshetty U. OC-0613: Prostate Only or Pelvic Radiotherapy in High Risk Prostate Cancer: Outcomes of a Randomised Trial. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00635-6] [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]
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18
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Cruz‐Ortiz AF, Taccone MI, Maitre P, Rossa M, Pino GA. On the Interaction between Deprotonated Cytosine [C
(−H)
]
−
and Ba
2+
: Infrared Multiphoton Spectroscopy and Dynamics. Chemphyschem 2020; 21:2571-2582. [DOI: 10.1002/cphc.202000696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/21/2020] [Indexed: 01/11/2023]
Affiliation(s)
- Andrés F. Cruz‐Ortiz
- INFIQC (CONICET-UNC) Ciudad Universitaria Pabellón Argentina 5000 Córdoba Argentina
- Departamento de Fisicoquímica Fac. de Ciencias Químicas Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
- Centro Láser de Ciencias Moleculares Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
| | - Martín I. Taccone
- INFIQC (CONICET-UNC) Ciudad Universitaria Pabellón Argentina 5000 Córdoba Argentina
- Departamento de Fisicoquímica Fac. de Ciencias Químicas Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
- Centro Láser de Ciencias Moleculares Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
| | - Philippe Maitre
- Université Paris-Saclay CNRS, Institut de Chimie Physique 91405 Orsay France
| | - Maximiliano Rossa
- INFIQC (CONICET-UNC) Ciudad Universitaria Pabellón Argentina 5000 Córdoba Argentina
- Departamento de Fisicoquímica Fac. de Ciencias Químicas Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
- Centro Láser de Ciencias Moleculares Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
| | - Gustavo A. Pino
- INFIQC (CONICET-UNC) Ciudad Universitaria Pabellón Argentina 5000 Córdoba Argentina
- Departamento de Fisicoquímica Fac. de Ciencias Químicas Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
- Centro Láser de Ciencias Moleculares Universidad Nacional de Córdoba Ciudad Universitaria, Pabellón Argentina X5000HUA Córdoba Argentina
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19
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Maitre P, Scuderi D, Corinti D, Chiavarino B, Crestoni ME, Fornarini S. Applications of Infrared Multiple Photon Dissociation (IRMPD) to the Detection of Posttranslational Modifications. Chem Rev 2019; 120:3261-3295. [PMID: 31809038 DOI: 10.1021/acs.chemrev.9b00395] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Infrared multiple photon dissociation (IRMPD) spectroscopy allows for the derivation of the vibrational fingerprint of molecular ions under tandem mass spectrometry (MS/MS) conditions. It provides insight into the nature and localization of posttranslational modifications (PTMs) affecting single amino acids and peptides. IRMPD spectroscopy, which takes advantage of the high sensitivity and resolution of MS/MS, relies on a wavelength specific fragmentation process occurring on resonance with an IR active vibrational mode of the sampled species and is well suited to reveal the presence of a PTM and its impact in the molecular environment. IRMPD spectroscopy is clearly not a proteomics tool. It is rather a valuable source of information for fixed wavelength IRMPD exploited in dissociation protocols of peptides and proteins. Indeed, from the large variety of model PTM containing amino acids and peptides which have been characterized by IRMPD spectroscopy, specific signatures of PTMs such as phosphorylation or sulfonation can be derived. High throughput workflows relying on the selective fragmentation of modified peptides within a complex mixture have thus been proposed. Sequential fragmentations can be observed upon IR activation, which do not only give rise to rich fragmentation patterns but also overcome low mass cutoff limitations in ion trap mass analyzers. Laser-based vibrational spectroscopy of mass-selected ions holding various PTMs is an increasingly expanding field both in the variety of chemical issues coped with and in the technological advancements and implementations.
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Affiliation(s)
- Philippe Maitre
- Laboratoire de Chimie Physique (UMR8000), Université Paris-Sud, CNRS, Université Paris Saclay, 91405, Orsay, France
| | - Debora Scuderi
- Laboratoire de Chimie Physique (UMR8000), Université Paris-Sud, CNRS, Université Paris Saclay, 91405, Orsay, France
| | - Davide Corinti
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", I-00185 Roma, Italy
| | - Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", I-00185 Roma, Italy
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", I-00185 Roma, Italy
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", I-00185 Roma, Italy
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20
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McNary CP, Nei YW, Maitre P, Rodgers MT, Armentrout PB. Infrared multiple photon dissociation action spectroscopy of protonated glycine, histidine, lysine, and arginine complexed with 18-crown-6 ether. Phys Chem Chem Phys 2019; 21:12625-12639. [PMID: 31155616 DOI: 10.1039/c9cp02265a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes of 18-crown-6 ether (18C6) with four protonated amino acids (AAs) are examined using infrared multiple photon dissociation (IRMPD) action spectroscopy utilizing light generated by the infrared free electron laser at the Centre Laser Infrarouge d'Orsay (CLIO). The AAs examined in this work include glycine (Gly) and the three basic AAs: histidine (His), lysine (Lys), and arginine (Arg). To identify the (AA)H+(18C6) conformations present in the experimental studies, the measured IRMPD spectra are compared to spectra calculated at the B3LYP/6-311+G(d,p) level of theory. Relative energies of various conformers and isomers are provided by single point energy calculations carried out at the B3LYP, B3P86, M06, and MP2(full) levels using the 6-311+G(2p,2d) basis set. The comparisons between the IRMPD and theoretical IR spectra indicate that 18C6 binds to Gly and His via the protonated backbone amino group, whereas protonated Lys prefers binding via the protonated side-chain amino group. Results for Arg are less definitive with strong evidence for binding to the protonated guanidino side chain (the calculated ground conformer at most levels of theory), but contributions from backbone binding to a zwitterionic structure are likely.
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Affiliation(s)
- Christopher P McNary
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, USA.
| | - Y-W Nei
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
| | - Philippe Maitre
- Université Paris Sud, Laboratoire de Chimie Physique, UMR8000 CNRS, Faculté des Sciences, Bâtiment 350, 91405 Orsay Cedex, France
| | - M T Rodgers
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
| | - P B Armentrout
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, USA.
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21
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Corinti D, Maccelli A, Chiavarino B, Maitre P, Scuderi D, Bodo E, Fornarini S, Crestoni ME. Vibrational signatures of curcumin's chelation in copper(II) complexes: An appraisal by IRMPD spectroscopy. J Chem Phys 2019; 150:165101. [PMID: 31042893 DOI: 10.1063/1.5086666] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Curcumin (Cur) is a natural polyphenol with a wide spectrum of biological activities and appealing therapeutic potential. Herein, it has been delivered by electrospray ionization as gaseous protonated species, [Cur + H]+, and as a Cu(ii) complex, [Cu(Cur - H)]+, a promising antioxidant and radical scavenger. The gas phase structures were assayed by infrared multiple photon dissociation (IRMPD) spectroscopy in both the fingerprint (800-2000 cm-1) and hydrogen stretching (3100-3750 cm-1) ranges. Comparison between the experimental features and linear IR spectra of the lowest energy structures computed at the B3LYP/6-311+G(d,p) level reveals that bare [Cu(Cur - H)]+ exists in a fully planar and symmetric arrangement, where the metal interacts with the two oxygens of the syn-enolate functionality of deprotonated Cur and both OCH3 groups are engaged in H-bonding with the ortho OH. The effect of protonation on the energetic and geometric determinants of Cur has been explored as well, revealing that bare [Cur + H]+ may exist as a mixture of two close-lying isomers associated with the most stable binding motifs. The additional proton is bound to either the diketo or the keto-enol configuration of Cur, in a bent or nearly planar arrangement, respectively.
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Affiliation(s)
- Davide Corinti
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza," Piazzale Aldo Moro, 5, I-00185 Roma, Italy
| | - Alessandro Maccelli
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza," Piazzale Aldo Moro, 5, I-00185 Roma, Italy
| | - Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza," Piazzale Aldo Moro, 5, I-00185 Roma, Italy
| | - Philippe Maitre
- Laboratoire de Chimie Physique (UMR8000), CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay, France
| | - Debora Scuderi
- Laboratoire de Chimie Physique (UMR8000), CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay, France
| | - Enrico Bodo
- Dipartimento di Chimica, Università di Roma "La Sapienza," Piazzale Aldo Moro, 5, I-00185 Roma, Italy
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza," Piazzale Aldo Moro, 5, I-00185 Roma, Italy
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza," Piazzale Aldo Moro, 5, I-00185 Roma, Italy
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22
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Molano-Arevalo JC, Gonzalez W, Jeanne Dit Fouque K, Miksovska J, Maitre P, Fernandez-Lima F. Insights from ion mobility-mass spectrometry, infrared spectroscopy, and molecular dynamics simulations on nicotinamide adenine dinucleotide structural dynamics: NAD +vs. NADH. Phys Chem Chem Phys 2018; 20:7043-7052. [PMID: 29473073 DOI: 10.1039/c7cp05602h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Nicotinamide adenine dinucleotide (NAD) is found in all living cells where the oxidized (NAD+) and reduced (NADH) forms play important roles in many enzymatic reactions. However, little is known about NAD+ and NADH conformational changes and kinetics as a function of the cell environment. In the present work, an analytical workflow is utilized to study NAD+ and NADH dynamics as a function of the organic content in solution using fluorescence lifetime spectroscopy and in the gas-phase using trapped ion mobility spectrometry coupled to mass spectrometry (TIMS-MS) and infrared multiple photon dissociation (IRMPD) spectroscopy. NAD solution time decay studies showed a two-component distribution, assigned to changes from a "close" to "open" conformation with the increase of the organic content. NAD gas-phase studies using nESI-TIMS-MS displayed two ion mobility bands for NAD+ protonated and sodiated species, while four and two ion mobility bands were observed for NADH protonated and sodiated species, respectively. Changes in the mobility profiles were observed for NADH as a function of the starting solution conditions and the time after desolvation, while NAD+ profiles showed no dependence. IRMPD spectroscopy of NAD+ and NADH protonated species in the 800-1800 and 3200-3700 cm-1 spectral regions showed common and signature bands between the NAD forms. Candidate structures were proposed for NAD+ and NADH kinetically trapped intermediates of the protonated and sodiated species, based on their collision cross sections and IR profiles. Results showed that NAD+ and NADH species exist in open, stack, and closed conformations and that the driving force for conformational dynamics is hydrogen bonding of the N-H-O and O-H-O forms with ribose rings.
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23
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He CC, Hamlow LA, Devereaux ZJ, Zhu Y, Nei YW, Fan L, McNary CP, Maitre P, Steinmetz V, Schindler B, Compagnon I, Armentrout PB, Rodgers MT. Structural and Energetic Effects of O2'-Ribose Methylation of Protonated Purine Nucleosides. J Phys Chem B 2018; 122:9147-9160. [PMID: 30203656 DOI: 10.1021/acs.jpcb.8b07687] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The chemical difference between DNA and RNA nucleosides is their 2'-hydrogen versus 2'-hydroxyl substituents. Modification of the ribosyl moiety at the 2'-position and 2'-O-methylation in particular, is common among natural post-transcriptional modifications of RNA. 2'-Modification may alter the electronic properties and hydrogen-bonding characteristics of the nucleoside and thus may lead to enhanced stabilization or malfunction. The structures and relative glycosidic bond stabilities of the protonated forms of the 2'-O-methylated purine nucleosides, 2'-O-methyladenosine (Adom) and 2'-O-methylguanosine (Guom), were examined using two complementary tandem mass spectrometry approaches, infrared multiple photon dissociation action spectroscopy and energy-resolved collision-induced dissociation. Theoretical calculations were also performed to predict the structures and relative stabilities of stable low-energy conformations of the protonated forms of the 2'-O-methylated purine nucleosides and their infrared spectra in the gas phase. Low-energy conformations highly parallel to those found for the protonated forms of the canonical DNA and RNA purine nucleosides are also found for the protonated 2'-O-methylated purine nucleosides. Importantly, the preferred site of protonation, nucleobase orientation, and sugar puckering are preserved among the DNA, RNA, and 2'-O-methylated variants of the protonated purine nucleosides. The 2'-substituent does however influence hydrogen-bond stabilization as the 2'-O-methyl and 2'-hydroxyl substituents enable a hydrogen-bonding interaction between the 2'- and 3'-substituents, whereas a 2'-hydrogen atom does not. Further, 2'-O-methylation reduces the number of stable low-energy hydrogen-bonded conformations possible and importantly inverts the preferred polarity of this interaction versus that of the RNA analogues. Trends in the CID50% values extracted from survival yield analyses of the 2'-O-methylated and canonical DNA and RNA forms of the protonated purine nucleosides are employed to elucidate their relative glycosidic bond stabilities. The glycosidic bond stability of Adom is found to exceed that of its DNA and RNA analogues. The glycosidic bond stability of Guom is also found to exceed that of its DNA analogue; however, this modification weakens this bond relative to its RNA counterpart. The glycosidic bond stability of the protonated purine nucleosides appears to be correlated with the hydrogen-bond stabilization of the sugar moiety.
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Affiliation(s)
- C C He
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - L A Hamlow
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - Zachary J Devereaux
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - Y Zhu
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - Y-W Nei
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - L Fan
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - C P McNary
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
| | - P Maitre
- Laboratoire de Chimie Physique (UMR8000), CNRS, Université Paris-Sud, Université Paris-Saclay , 91405 Orsay , France
| | - V Steinmetz
- Laboratoire de Chimie Physique (UMR8000), CNRS, Université Paris-Sud, Université Paris-Saclay , 91405 Orsay , France
| | - B Schindler
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne , France
| | - I Compagnon
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne , France
| | - P B Armentrout
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
| | - M T Rodgers
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
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24
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Schbath J, Boissel JP, Mathy B, Ville D, Benveniste E, Sanchini B, Leizorovicz A, Belleville J, Dechavanne M, Maitre P, Gillet J, Bentamar A. Drugs Effect on Platelet Survival Time: Comparison of Two Pyrimido-Pyrimidine Derivatives in Patients with Aortic or Mitral Replacement. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1661016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryA prospective randomized trial of the effects of 2 antiplatelet aggregating drugs, dipyridamole (375 mg/d), a related substance RA 233 (1500 mg/d) and placebo, concomitantly with oral anticoagulants, was carried out in patients with prior valvular replacement. The study was aimed to determine effect on platelet survival time (PST) of these 2 agents. The trial sample consisted of 40 males and 15 females aged 40–70 years (average 53 years). 32 received Björk-Shiley valve in aortic position; 23 underwent mitral valve replacement: 3 with Cooley-Cutter, 11 with Lillehei- Kaster 500 and 9 with Starr-Edwards 6120 prostheses; 28 patients had aortic stenosis, 21 aortic insufficiency. All the PST measured after 3 months of treatment were within normal ranges and not different between placebo, dipyridamole or RA 233 treated subjects: averages in days were, respectively, 7.49, 7.11 and 6.88. The present study did not support the claim that modem valve prosthesis could lead to a shortened PST.
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Affiliation(s)
- J Schbath
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - J P Boissel
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - B Mathy
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - D Ville
- The Laboratoire de Médicine Nucléaire, Pr. Viala, Hôpital E. Herriot, Lyon, France
| | - E Benveniste
- The Laboratoire d’Hématologie, Pr. Germain, Hôpital Cardiologique, Lyon, France
| | - B Sanchini
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - A Leizorovicz
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - J Belleville
- The Laboratoire d’Hématologie, Pr. Germain, Hôpital Cardiologique, Lyon, France
| | - M Dechavanne
- The Laboratoire de Médicine Nucléaire, Pr. Viala, Hôpital E. Herriot, Lyon, France
| | - P Maitre
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - J Gillet
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
| | - A Bentamar
- The Unité de Pharmacologie Clinique, Hôpital Cardiologique, Lyon, France
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25
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Berthias F, Maatoug B, Glish GL, Moussa F, Maitre P. Resolution and Assignment of Differential Ion Mobility Spectra of Sarcosine and Isomers. J Am Soc Mass Spectrom 2018; 29:752-760. [PMID: 29468501 DOI: 10.1007/s13361-018-1902-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/13/2018] [Accepted: 01/18/2018] [Indexed: 06/08/2023]
Abstract
Due to their central role in biochemical processes, fast separation and identification of amino acids (AA) is of importance in many areas of the biomedical field including the diagnosis and monitoring of inborn errors of metabolism and biomarker discovery. Due to the large number of AA together with their isomers and isobars, common methods of AA analysis are tedious and time-consuming because they include a chromatographic separation step requiring pre- or post-column derivatization. Here, we propose a rapid method of separation and identification of sarcosine, a biomarker candidate of prostate cancer, from isomers using differential ion mobility spectrometry (DIMS) interfaced with a tandem mass spectrometer (MS/MS) instrument. Baseline separation of protonated sarcosine from α- and β-alanine isomers can be easily achieved. Identification of DIMS peak is performed using an isomer-specific activation mode where DIMS- and mass-selected ions are irradiated at selected wavenumbers allowing for the specific fragmentation via an infrared multiple photon dissociation (IRMPD) process. Two orthogonal methods to MS/MS are thus added, where the MS/MS(IRMPD) is nothing but an isomer-specific multiple reaction monitoring (MRM) method. The identification relies on the comparison of DIMS-MS/MS(IRMPD) chromatograms recorded at different wavenumbers. Based on the comparison of IR spectra of the three isomers, it is shown that specific depletion of the two protonated α- and β-alanine can be achieved, thus allowing for clear identification of the sarcosine peak. It is also demonstrated that DIMS-MS/MS(IRMPD) spectra in the carboxylic C=O stretching region allow for the resolution of overlapping DIMS peaks. Graphical Abstract ᅟ.
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Affiliation(s)
- Francis Berthias
- Laboratoire de Chimie Physique, Bâtiment 349, Université Paris-Sud, CNRS, Université Paris-Saclay, F-91405, Orsay, France
| | - Belkis Maatoug
- Laboratoire de Chimie Physique, Bâtiment 349, Université Paris-Sud, CNRS, Université Paris-Saclay, F-91405, Orsay, France
| | - Gary L Glish
- Department of Chemistry, Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
| | - Fathi Moussa
- Université Paris-Sud, LETIAM, Lip(Sys)2, IUT d'Orsay, Plateau de Moulon, 91400, Orsay, France
- Biochemistry and Neuropediatric services, Hospital Group A. Trousseau-La Roche-Guyon, APHP, 75012, Paris, France
| | - Philippe Maitre
- Laboratoire de Chimie Physique, Bâtiment 349, Université Paris-Sud, CNRS, Université Paris-Saclay, F-91405, Orsay, France.
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26
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Lesslie M, Yang Y, Canty AJ, Piacentino E, Berthias F, Maitre P, Ryzhov V, O'Hair RAJ. Ligand-induced decarbonylation in diphosphine-ligated palladium acetates [CH3CO2Pd((PR2)2CH2)]+ (R = Me and Ph). Chem Commun (Camb) 2018; 54:346-349. [DOI: 10.1039/c7cc08944a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Isotope labelling, IR spectroscopy and DFT calculations reveal a novel ligand-induced decarbonylation reaction.
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Affiliation(s)
- Michael Lesslie
- Department of Chemistry and Biochemistry
- and Center for Biochemical and Biophysical Sciences
- Northern Illinois University
- DeKalb
- USA
| | - Yang Yang
- School of Chemistry
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
- Victoria 3010
- Australia
| | - Allan J. Canty
- School of Physical Sciences
- University of Tasmania
- Hobart
- Australia
| | - Elettra Piacentino
- Department of Chemistry and Biochemistry
- and Center for Biochemical and Biophysical Sciences
- Northern Illinois University
- DeKalb
- USA
| | - Francis Berthias
- Laboratoire de Chimie Physique
- Bâtiment 349
- Université Paris-Sud
- CNRS
- Université Paris-Saclay
| | - Philippe Maitre
- Laboratoire de Chimie Physique
- Bâtiment 349
- Université Paris-Sud
- CNRS
- Université Paris-Saclay
| | - Victor Ryzhov
- Department of Chemistry and Biochemistry
- and Center for Biochemical and Biophysical Sciences
- Northern Illinois University
- DeKalb
- USA
| | - Richard A. J. O'Hair
- School of Chemistry
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
- Victoria 3010
- Australia
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27
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Cruz-Ortiz AF, Rossa M, Berthias F, Berdakin M, Maitre P, Pino GA. Fingerprints of Both Watson-Crick and Hoogsteen Isomers of the Isolated (Cytosine-Guanine)H + Pair. J Phys Chem Lett 2017; 8:5501-5506. [PMID: 29064704 DOI: 10.1021/acs.jpclett.7b02140] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gas phase protonated guanine-cytosine (CGH+) pair was generated using an electrospray ionization source from solutions at two different pH (5.8 and 3.2). Consistent evidence from MS/MS fragmentation patterns and differential ion mobility spectra (DIMS) point toward the presence of two isomers of the CGH+ pair, whose relative populations depend strongly on the pH of the solution. Gas phase infrared multiphoton dissociation (IRMPD) spectroscopy in the 900-1900 cm-1 spectral range further confirms that the Watson-Crick isomer is preferentially produced (91%) at pH = 5.8, while the Hoogsteen isomer predominates (66%) at pH = 3.2). These fingerprint signatures are expected to be useful for the development of new analytical methodologies and to trigger isomer selective photochemical studies of protonated DNA base pairs.
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Affiliation(s)
- Andrés F Cruz-Ortiz
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET - UNC, Ciudad Universitaria , X5000HUA Córdoba, Argentina
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria , X5000HUA Córdoba, Argentina
| | - Maximiliano Rossa
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET - UNC, Ciudad Universitaria , X5000HUA Córdoba, Argentina
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria , X5000HUA Córdoba, Argentina
| | - Francis Berthias
- Laboratoire de Chimie Physique, Université Paris-Sud, CNRS, Université Paris-Saclay , F-91405 Orsay, France
| | - Matías Berdakin
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET - UNC, Ciudad Universitaria , X5000HUA Córdoba, Argentina
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria , X5000HUA Córdoba, Argentina
| | - Philippe Maitre
- Laboratoire de Chimie Physique, Université Paris-Sud, CNRS, Université Paris-Saclay , F-91405 Orsay, France
| | - Gustavo A Pino
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), CONICET - UNC, Ciudad Universitaria , X5000HUA Córdoba, Argentina
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria , X5000HUA Córdoba, Argentina
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Abstract
Abstract
The analysis of pterins in the cerebrospinal fluid (CSF) is mandatory for the etiologic diagnosis of inborn errors of dopamine and serotonin metabolism. The success of the available therapeutic strategies for preventing the ongoing brain dysfunction is tightly dependent of the early diagnosis of these neurotransmitter disorders. Previous methods of pterins determination in the CSF have in common at least one reversed phase HPLC step coupled to electrochemical or fluorescence detection (FD). They differ in the oxidation procedure of the reduced forms of pterins into their oxidized fluorescent counterparts. Most of the methods using the FD include at least one offline chemical oxidation procedure and cannot allow the direct quantification of tetrahydrobiopterin (BH4). A recent method proposed a single step simultaneous quantification of all forms of pterins including BH4 by HPLC coupled to FD after post-column coulometric oxidation. Nowadays, recent advances in mass spectrometry (MS), notably in term of sensitivity, allow the direct unambiguous determination of all forms of pterins in the CSF by LC-MS/MS.
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Affiliation(s)
- Pierre Guibal
- Letiam, Lip(Sys) , Université Paris-Sud , IUT d’Orsay, Plateau de Moulon , 91405 Orsay , France
| | - Aurélien Lo
- Letiam, Lip(Sys) , Université Paris-Sud , IUT d’Orsay, Plateau de Moulon , 91405 Orsay , France
| | - Philippe Maitre
- Laboratoire de Chimie Physique , UMR 8000 CNRS , Faculté des Sciences d’Orsay, Université Paris-Sud , 15, Rue G. Clemenceau , 91400 Orsay , France
| | - Fathi Moussa
- Letiam, Lip(Sys) , Université Paris-Sud , IUT d’Orsay, Plateau de Moulon , 91405 Orsay , France
- Service de Biochimie, Groupe Hospitalier Trousseau-La Roche Guyon , APHP, 26 Avenue du Dr A. Netter , 75012 Paris , France
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29
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Paciotti R, Corinti D, De Petris A, Ciavardini A, Piccirillo S, Coletti C, Re N, Maitre P, Bellina B, Barran P, Chiavarino B, Elisa Crestoni M, Fornarini S. Cisplatin and transplatin interaction with methionine: bonding motifs assayed by vibrational spectroscopy in the isolated ionic complexes. Phys Chem Chem Phys 2017; 19:26697-26707. [DOI: 10.1039/c7cp05203k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
IRMPD spectroscopy discloses N- versus S-platination.
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30
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Zavras A, Khairallah GN, Krstić M, Girod M, Daly S, Antoine R, Maitre P, Mulder RJ, Alexander SA, Bonačić-Koutecký V, Dugourd P, O'Hair RAJ. Ligand-induced substrate steering and reshaping of [Ag2(H)](+) scaffold for selective CO2 extrusion from formic acid. Nat Commun 2016; 7:11746. [PMID: 27265868 PMCID: PMC4897753 DOI: 10.1038/ncomms11746] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [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: 12/14/2015] [Accepted: 04/26/2016] [Indexed: 12/02/2022] Open
Abstract
Metalloenzymes preorganize the reaction environment to steer substrate(s) along the required reaction coordinate. Here, we show that phosphine ligands selectively facilitate protonation of binuclear silver hydride cations, [LAg2(H)]+ by optimizing the geometry of the active site. This is a key step in the selective, catalysed extrusion of carbon dioxide from formic acid, HO2CH, with important applications (for example, hydrogen storage). Gas-phase ion-molecule reactions, collision-induced dissociation (CID), infrared and ultraviolet action spectroscopy and computational chemistry link structure to reactivity and mechanism. [Ag2(H)]+ and [Ph3PAg2(H)]+ react with formic acid yielding Lewis adducts, while [(Ph3P)2Ag2(H)]+ is unreactive. Using bis(diphenylphosphino)methane (dppm) reshapes the geometry of the binuclear Ag2(H)+ scaffold, triggering reactivity towards formic acid, to produce [dppmAg2(O2CH)]+ and H2. Decarboxylation of [dppmAg2(O2CH)]+ via CID regenerates [dppmAg2(H)]+. These gas-phase insights inspired variable temperature NMR studies that show CO2 and H2 production at 70 °C from solutions containing dppm, AgBF4, NaO2CH and HO2CH. Designing catalysts and understanding the influence of ligands for particular transformations remains a highly challenging task. Here, the authors show that bisphosphine ligands can alter the geometry of the active site in silver catalysts, driving protonation and ultimately extrusion of carbon dioxide from formic acid.
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Affiliation(s)
- Athanasios Zavras
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - George N Khairallah
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Marjan Krstić
- Center of Excellence for Science and Technology - Integration of Mediterranean region (STIM) at Interdisciplinary Center for Advanced Science and Technology (ICAST), University of Split, Meštrovićevo šetalište 45, 21000 Split, Croatia
| | - Marion Girod
- Institut des Sciences Analytiques, Université de Lyon, Université Lyon 1-CNRS-ENS Lyon, 69100 Villeurbanne, France
| | - Steven Daly
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Rodolphe Antoine
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Philippe Maitre
- Laboratoire de Chimie Physique, Bâtiment 349, Université Paris-Sud, CNRS, Université Paris-Saclay, F-91405 Orsay, France
| | - Roger J Mulder
- CSIRO Manufacturing, Bayview Avenue, Clayton, Victoria 3168, Australia
| | - Stefanie-Ann Alexander
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Vlasta Bonačić-Koutecký
- Center of Excellence for Science and Technology - Integration of Mediterranean region (STIM) at Interdisciplinary Center for Advanced Science and Technology (ICAST), University of Split, Meštrovićevo šetalište 45, 21000 Split, Croatia.,Humboldt-Universität Berlin, Institut für Chemie, 12489 Berlin, Germany
| | - Philippe Dugourd
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
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Sinha RK, Scuderi D, Maitre P, Chiavarino B, Crestoni ME, Fornarini S. Elusive Sulfurous Acid: Gas-Phase Basicity and IR Signature of the Protonated Species. J Phys Chem Lett 2015; 6:1605-1610. [PMID: 26263321 DOI: 10.1021/acs.jpclett.5b00450] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The ion corresponding to protonated sulfurous acid, H3SO3(+), has been successfully delivered into the gas phase by electrospray ionization of the solution of a suitable precursor and an in-source fragmentation process. The neutral acid is a highly elusive molecule. However, its gas-phase basicity has been ascertained by means of a kinetic study of proton-transfer reactivity. The structure of the H3SO3(+) sampled ion has been probed by IRMPD spectroscopy in two complementary IR frequency ranges in conjunction with density functional theory calculations and found to conform to a trihydroxosulfonium ion. The characteristic IR signatures may aid in deciphering the presence of this species in extraterrestrial atmospheres.
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Affiliation(s)
- Rajeev K Sinha
- †Faculté des Sciences, Laboratoire de Chimie Physique, UMR8000 CNRS, Université Paris-Sud, Batiment 349, 91405 Orsay Cedex, France
- ∥Department of Atomic and Molecular Physics, Manipal University, Manipal, 576104 Karnataka, India
| | - Debora Scuderi
- †Faculté des Sciences, Laboratoire de Chimie Physique, UMR8000 CNRS, Université Paris-Sud, Batiment 349, 91405 Orsay Cedex, France
| | - Philippe Maitre
- †Faculté des Sciences, Laboratoire de Chimie Physique, UMR8000 CNRS, Université Paris-Sud, Batiment 349, 91405 Orsay Cedex, France
| | - Barbara Chiavarino
- ‡Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Maria Elisa Crestoni
- ‡Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Simonetta Fornarini
- ‡Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
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Hernandez O, Isenberg S, Steinmetz V, Glish GL, Maitre P. Probing Mobility-Selected Saccharide Isomers: Selective Ion-Molecule Reactions and Wavelength-Specific IR Activation. J Phys Chem A 2015; 119:6057-64. [PMID: 25827317 DOI: 10.1021/jp511975f] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Differential Ion Mobility Spectrometry (DIMS) provides orthogonal separation to mass spectrometry, and DIMS combined with the high sensitivity of a quadrupole ion-trap is shown to be useful for the separation and identification of saccharides. A comprehensive analysis of the separation of anomers (α- and β-methylated glucose) and epimers (α-methylated glucose and mannose) ionized with Li(+), Na(+), and K(+) is performed. DIMS separation is found to be better for saccharides cationized with the two latter species. The corresponding resolving power for the two glucose anomers with Na(+) is found to be very close to the corresponding drift-tube IMS value. The lithiated complexes are investigated further using a combination of infrared spectroscopy integrated to ion-trap mass spectrometry and quantum chemical calculations. Together with DIMS, consistent results are obtained. It is found that two competing structural motifs might be at play, depending on the subtle balance between the maximization of the coordination of the metal cation and the intrinsic conformational energetics of the saccharide, which is for a large part driven by hydrogen bonding. The comparison of simulated and observed spectra clearly shows that a band at ∼3400 cm(-1) is specific to a structural motif found in the lithiated glucose complexes, which could explain the trends observed in the DIMS spectra of the saccharide complexes. It is shown that DIMS-MS/MS using wavelength specific IR activation would provide a new orthogonal dimension to mass spectrometry.
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Affiliation(s)
- Oscar Hernandez
- †Laboratoire de Chimie Physique, Université Paris Sud, 91400 Orsay, France
| | - Samantha Isenberg
- ‡Department of Chemistry, University of North Carolina, 320 Caudill Laboratories, Chapel Hill, North Carolina 27599-3290, United States
| | - Vincent Steinmetz
- †Laboratoire de Chimie Physique, Université Paris Sud, 91400 Orsay, France
| | - Gary L Glish
- ‡Department of Chemistry, University of North Carolina, 320 Caudill Laboratories, Chapel Hill, North Carolina 27599-3290, United States
| | - Philippe Maitre
- †Laboratoire de Chimie Physique, Université Paris Sud, 91400 Orsay, France
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Berdakin M, Steinmetz V, Maitre P, Pino GA. On the Ag+–cytosine interaction: the effect of microhydration probed by IR optical spectroscopy and density functional theory. Phys Chem Chem Phys 2015; 17:25915-24. [DOI: 10.1039/c5cp02221e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single water molecule hydration stabilizes two quasi-isoenergetic complexes of cytosine⋯Ag+.
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Affiliation(s)
- Matias Berdakin
- INFIQC (CONICET – Universidad Nacional de Córdoba)
- Dpto. de Fisicoquímica
- Facultad de Ciencias Químicas
- Centro Láser de Ciencias Moleculares
- Universidad Nacional de Córdoba
| | - Vincent Steinmetz
- Laboratoire de Chimie Physique
- Université Paris Sud
- UMR8000 CNRS
- Faculté des Sciences
- 91405 Orsay Cedex
| | - Philippe Maitre
- Laboratoire de Chimie Physique
- Université Paris Sud
- UMR8000 CNRS
- Faculté des Sciences
- 91405 Orsay Cedex
| | - Gustavo A. Pino
- INFIQC (CONICET – Universidad Nacional de Córdoba)
- Dpto. de Fisicoquímica
- Facultad de Ciencias Químicas
- Centro Láser de Ciencias Moleculares
- Universidad Nacional de Córdoba
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Li J, Khairallah GN, Steinmetz V, Maitre P, O'Hair RAJ. Copper mediated decyano decarboxylative coupling of cyanoacetate ligands: Pesci versus Lewis acid mechanism. Dalton Trans 2015; 44:9230-40. [DOI: 10.1039/c5dt00942a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combination of gas-phase ion trap multistage mass spectrometry (MSn) experiments and density functional theory (DFT) calculations have been used to examine the mechanisms of the sequential decomposition reactions of copper cyanoacetate anions, [(NCCH2CO2)2Cu]−.
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Affiliation(s)
- Jiawei Li
- School of Chemistry
- University of Melbourne
- Australia
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
| | - George N. Khairallah
- School of Chemistry
- University of Melbourne
- Australia
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
| | - Vincent Steinmetz
- Laboratoire de Chimie Physique
- UMR8000 CNRS
- Université Paris-Sud
- Orsay
- France
| | - Philippe Maitre
- Laboratoire de Chimie Physique
- UMR8000 CNRS
- Université Paris-Sud
- Orsay
- France
| | - Richard A. J. O'Hair
- School of Chemistry
- University of Melbourne
- Australia
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
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35
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Berdakin M, Steinmetz V, Maitre P, Pino GA. Gas Phase Structure of Metal Mediated (Cytosine)2Ag+ Mimics the Hemiprotonated (Cytosine)2H+ Dimer in i-Motif Folding. J Phys Chem A 2014; 118:3804-3809. [DOI: 10.1021/jp5038969] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Matias Berdakin
- INFIQC (CONICET
− Universidad Nacional de Córdoba), Departamento de
Fisicoquímica, Facultad de Ciencias Químicas, Centro
Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Córdoba, Argentina
| | - Vincent Steinmetz
- Laboratoire de Chimie Physique, Université Paris Sud, UMR8000 CNRS, Faculté des Sciences, 91405 Orsay Cedex, France
| | - Philippe Maitre
- Laboratoire de Chimie Physique, Université Paris Sud, UMR8000 CNRS, Faculté des Sciences, 91405 Orsay Cedex, France
| | - Gustavo A. Pino
- INFIQC (CONICET
− Universidad Nacional de Córdoba), Departamento de
Fisicoquímica, Facultad de Ciencias Químicas, Centro
Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Córdoba, Argentina
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36
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Lanucara F, Chiavarino B, Scuderi D, Maitre P, Fornarini S, Crestoni ME. Kinetic control in the CID-induced elimination of H3PO4 from phosphorylated serine probed using IRMPD spectroscopy. Chem Commun (Camb) 2014; 50:3845-8. [PMID: 24589658 DOI: 10.1039/c4cc00877d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
InfraRed Multiple Photon Dissociation (IRMPD) spectroscopy was used to assay the structural features of the fragment ions resulting from the elimination of H3PO4 in the Collision-Induced Dissociation (CID) of protonated serine. The results are interpreted with the aid of density functional theory calculations. Experiment and theory point to an aziridine-ring structure, implying participation of the vicinal amino group in the formation of this species. This finding constitutes a benchmark for investigating the same process in the CID of phosphorylated peptides.
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Affiliation(s)
- Francesco Lanucara
- Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, 131 Princess Street, M17DN Manchester, UK.
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37
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Chiavarino B, Maitre P, Fornarini S, Crestoni ME. Cyanide-arene Meisenheimer complex generated in electrospray ionization mass spectrometry using acetonitrile as a solvent. J Am Soc Mass Spectrom 2013; 24:1603-1607. [PMID: 23954999 DOI: 10.1007/s13361-013-0703-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/08/2013] [Accepted: 07/08/2013] [Indexed: 06/02/2023]
Abstract
The C - C bond formation activated under negative electrospray ionization of an acetonitrile solution of 1,3,5-trinitrobenzene is reported. The solvent function is to provide a source of cyanide ion, a highly problematic reagent, which is found to attack the electron-deficient aromatic ring to form a covalently bound anionic complex (Meisenheimer complex). The structure of the complex is elucidated by means of collision induced dissociation mass spectrometry and IR multiple photon dissociation spectroscopy in the 'fingerprint' region.
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Affiliation(s)
- Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma La Sapienza, P.le A. Moro 5, 00185, Rome, Italy
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Chiavarino B, Crestoni ME, Lemaire J, Maitre P, Fornarini S. Communication: Infrared spectroscopy of protonated allyl-trimethylsilane: Evidence for the β-silyl effect. J Chem Phys 2013; 139:071102. [DOI: 10.1063/1.4818729] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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39
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Lanucara F, Crestoni ME, Chiavarino B, Fornarini S, Hernandez O, Scuderi D, Maitre P. Infrared spectroscopy of nucleotides in the gas phase 2. The protonated cyclic 3′,5′-adenosine monophosphate. RSC Adv 2013. [DOI: 10.1039/c3ra41117f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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40
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Chiavarino B, Crestoni ME, Dopfer O, Maitre P, Fornarini S. Benzylium versus Tropylium Ion Dichotomy: Vibrational Spectroscopy of Gaseous C8H9+ Ions. Angew Chem Int Ed Engl 2012; 51:4947-9. [DOI: 10.1002/anie.201200558] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Indexed: 11/08/2022]
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41
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Chiavarino B, Crestoni ME, Dopfer O, Maitre P, Fornarini S. Benzylium versus Tropylium Ion Dichotomy: Vibrational Spectroscopy of Gaseous C8H9+ Ions. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200558] [Citation(s) in RCA: 4] [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: 11/10/2022]
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42
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43
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Hernández FJ, Capello MC, Oldani AN, Ferrero JC, Maitre P, Pino GA. H-bonded network rearrangements in the S0, S1 and D0 states of neutral and cationic p-cresol(H2O)(NH3) complexes. Phys Chem Chem Phys 2012; 14:8945-55. [DOI: 10.1039/c2cp23586b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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44
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Gibert S, Lequang T, Maitre P, Poujol L, Cachon T, Carozzo C, Fau D, Genevois J, Viguier E. Sensitivity and specificity to determine lameness in dogs with a pressure walkway system. Comput Methods Biomech Biomed Engin 2010. [DOI: 10.1080/10255842.2010.493724] [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: 10/19/2022]
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45
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Affiliation(s)
- Anita Lagutschenkov
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Bât. 350, 91405 Orsay Cedex, France
| | - Rajeev K. Sinha
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Bât. 350, 91405 Orsay Cedex, France
| | - Philippe Maitre
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Bât. 350, 91405 Orsay Cedex, France
| | - Otto Dopfer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Bât. 350, 91405 Orsay Cedex, France
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46
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Lagutschenkov A, Springer A, Lorenz UJ, Maitre P, Dopfer O. Structure of Zirconocene Complexes Relevant for Olefin Catalysis: Infrared Fingerprint of the Zr(C5H5)2(OH)(CH3CN)+ Cation in the Gas Phase. J Phys Chem A 2010; 114:2073-9. [DOI: 10.1021/jp910035w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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)
- Anita Lagutschenkov
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany, Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Faculté des Sciences, Bât. 350, 91405 Orsay Cedex,
| | - Andreas Springer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany, Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Faculté des Sciences, Bât. 350, 91405 Orsay Cedex,
| | - Ulrich Joseph Lorenz
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany, Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Faculté des Sciences, Bât. 350, 91405 Orsay Cedex,
| | - Philippe Maitre
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany, Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Faculté des Sciences, Bât. 350, 91405 Orsay Cedex,
| | - Otto Dopfer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany, Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany, Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland, and Laboratoire de Chimie Physique, Faculté des Sciences, Université Paris-Sud 11, UMR8000 CNRS, Faculté des Sciences, Bât. 350, 91405 Orsay Cedex,
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47
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Scuderi D, Maitre P, Rondino F, Barbu-Debus KL, Lepère V, Zehnacker-Rentien A. Chiral Recognition in Cinchona Alkaloid Protonated Dimers: Mass Spectrometry and UV Photodissociation Studies. J Phys Chem A 2010; 114:3306-12. [DOI: 10.1021/jp9094497] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- D. Scuderi
- Laboratoire de Chimie Physique, UMR8000, Bât. 350 and Laboratoire de Photophysique Moléculaire, CNRS UPR3361, Bât. 210 Univ Paris-Sud, Orsay, F-91405, and Dipartimento di Chimica e Tecnologia del Farmaco, Università di Roma “La Sapienza”, P.le Aldo Moro 5, Rome I-00185
| | - P. Maitre
- Laboratoire de Chimie Physique, UMR8000, Bât. 350 and Laboratoire de Photophysique Moléculaire, CNRS UPR3361, Bât. 210 Univ Paris-Sud, Orsay, F-91405, and Dipartimento di Chimica e Tecnologia del Farmaco, Università di Roma “La Sapienza”, P.le Aldo Moro 5, Rome I-00185
| | - F. Rondino
- Laboratoire de Chimie Physique, UMR8000, Bât. 350 and Laboratoire de Photophysique Moléculaire, CNRS UPR3361, Bât. 210 Univ Paris-Sud, Orsay, F-91405, and Dipartimento di Chimica e Tecnologia del Farmaco, Università di Roma “La Sapienza”, P.le Aldo Moro 5, Rome I-00185
| | - K. Le Barbu-Debus
- Laboratoire de Chimie Physique, UMR8000, Bât. 350 and Laboratoire de Photophysique Moléculaire, CNRS UPR3361, Bât. 210 Univ Paris-Sud, Orsay, F-91405, and Dipartimento di Chimica e Tecnologia del Farmaco, Università di Roma “La Sapienza”, P.le Aldo Moro 5, Rome I-00185
| | - V. Lepère
- Laboratoire de Chimie Physique, UMR8000, Bât. 350 and Laboratoire de Photophysique Moléculaire, CNRS UPR3361, Bât. 210 Univ Paris-Sud, Orsay, F-91405, and Dipartimento di Chimica e Tecnologia del Farmaco, Università di Roma “La Sapienza”, P.le Aldo Moro 5, Rome I-00185
| | - A. Zehnacker-Rentien
- Laboratoire de Chimie Physique, UMR8000, Bât. 350 and Laboratoire de Photophysique Moléculaire, CNRS UPR3361, Bât. 210 Univ Paris-Sud, Orsay, F-91405, and Dipartimento di Chimica e Tecnologia del Farmaco, Università di Roma “La Sapienza”, P.le Aldo Moro 5, Rome I-00185
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48
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Fung Y, Besson T, Lemaire J, Maitre P, Zubarev R. Room-Temperature Infrared Spectroscopy Combined with Mass Spectrometry Distinguishes Gas-Phase Protein Isomers. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901516] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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49
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Fung Y, Besson T, Lemaire J, Maitre P, Zubarev R. Room-Temperature Infrared Spectroscopy Combined with Mass Spectrometry Distinguishes Gas-Phase Protein Isomers. Angew Chem Int Ed Engl 2009; 48:8340-2. [DOI: 10.1002/anie.200901516] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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50
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Cimas A, Maitre P, Ohanessian G, Gaigeot MP. Molecular Dynamics and Room Temperature Vibrational Properties of Deprotonated Phosphorylated Serine. J Chem Theory Comput 2009; 5:2388-400. [DOI: 10.1021/ct900179d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- A. Cimas
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR8587 CNRS, Université d’Evry val d’Essonne, boulevard F. Mitterrand, Bat. Maupertuis, 91025 Evry Cedex, France, Laboratoire de Chimie Physique, Université Paris Sud 11, UMR8000 CNRS, Faculté des sciences, bâtiment 350, 91405 Orsay Cedex, France, and Laboratoire des Mécanismes réactionnels, Département de Chimie, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
| | - P. Maitre
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR8587 CNRS, Université d’Evry val d’Essonne, boulevard F. Mitterrand, Bat. Maupertuis, 91025 Evry Cedex, France, Laboratoire de Chimie Physique, Université Paris Sud 11, UMR8000 CNRS, Faculté des sciences, bâtiment 350, 91405 Orsay Cedex, France, and Laboratoire des Mécanismes réactionnels, Département de Chimie, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
| | - G. Ohanessian
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR8587 CNRS, Université d’Evry val d’Essonne, boulevard F. Mitterrand, Bat. Maupertuis, 91025 Evry Cedex, France, Laboratoire de Chimie Physique, Université Paris Sud 11, UMR8000 CNRS, Faculté des sciences, bâtiment 350, 91405 Orsay Cedex, France, and Laboratoire des Mécanismes réactionnels, Département de Chimie, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
| | - M.-P. Gaigeot
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR8587 CNRS, Université d’Evry val d’Essonne, boulevard F. Mitterrand, Bat. Maupertuis, 91025 Evry Cedex, France, Laboratoire de Chimie Physique, Université Paris Sud 11, UMR8000 CNRS, Faculté des sciences, bâtiment 350, 91405 Orsay Cedex, France, and Laboratoire des Mécanismes réactionnels, Département de Chimie, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
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