Triple quadrupole mass spectrometry comparative DNA adductomics of Hep G2 cells following exposure to safrole

Takeshita, Toshihide; Tao, Fumiya; Kojima, Naoya; Kanaly, Robert A.

doi:10.1016/j.toxlet.2018.10.023

Cited by 15 publications

(10 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hep G2 cells were grown in culture medium as described above in 100 mm diameter size tissue culture dishes until confluent monolayers were obtained. Exposure and incubation of Hep G2 cells was conducted as described previously (Takeshita et al, 2019). Briefly, in this work, benzo[ a ]pyrene, 10 μM concentration in medium, was administered to cells in DMSO (10 μl, 0.1% v/v) whereby benzo[ a ]pyrene in DMSO was sterilized by filtration through Millex-LG 0.22 μm PTFE filters (Merck, Kenilworth, NJ, USA).…”

Section: Methodsmentioning

confidence: 99%

“…The ion source temperature was 130°C, the desolvation temperature was 350°C, and the cone voltage was 35 V. Nitrogen gas was used as the desolvation gas, 600 L/h, and cone gas, 60 L/h. Argon gas (99.9999%) was used as the collision cell gas at a collision cell pressure of approximately 4 × 10 −3 mbar and the collision cell energy was 10 eV for DNA (Takeshita et al, 2019) and RNA (unpublished data) adductome analyses. The MS was operated in multiple reaction monitoring mode (MRM) utilizing positive ionization.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

In vitro DNA/RNA Adductomics to Confirm DNA Damage Caused by Benzo[a]pyrene in the Hep G2 Cell Line

Takeshita

Kanaly

2019

Front. Chem.

Self Cite

View full text Add to dashboard Cite

In the development of new chemical substances, genetic toxicity evaluations are a high priority for safety risk management. Evaluation of the possibility of compound carcinogenicity with accuracy and at reasonable cost in the early stages of development by in vitro techniques is preferred. Currently, DNA damage-related in vitro genotoxicity tests are widely-used screening tools after which next generation toxicity testing may be applied to confirm DNA damage. DNA adductomics may be used to evaluate DNA damage in vitro , however confirmation of DNA adduct identities through comparison to authentic standards may be time-consuming and expensive processes. Considering this, a streamlined method for confirming putative DNA adducts that are detected by DNA adductomics may be useful. With this aim, in vitro DNA adductome methods in conjunction with in vitro RNA adductome methods may be proposed as a DNA adductome verification approach by which to eliminate false positive annotations. Such an approach was evaluated by conducting in vitro assays whereby Hep G2 cell lines that were exposed to or not exposed to benzo[ a ]pyrene were digested to their respective 2'-deoxynucleosides or ribonucleosides and analyzed by liquid chromatography electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) by comparative DNA and RNA adductomics through neutral loss targeting of the [M + H] + > [M + H – 116] + or [M + H] + > [M + H −132] + transitions over predetermined ranges. Comparisons of DNA adductome maps revealed putative DNA adducts that were detected in exposed cells but not in unexposed cells. Similarly, comparisons of RNA adductome maps revealed putative RNA adducts in exposed cells but not in unexposed cells. Taken together these experiments revealed that analogous forms of putative damage had occurred in both DNA and RNA which supported that putative DNA adducts detected by DNA adductomics were DNA adducts. High resolution mass spectrometry (HRMS) was utilized to confirm that putative nucleic acid adducts detected in both DNA and RNA were derived from benzo[ a ]pyrene exposure and these putative adducts were identified as 7,8-dihydroxy-9,10-epoxy-7,8,9,10-tetrahydrobenzo[ a ]pyrene- (B[ a ]PDE)-type adducts. Overall, this study demonstrates the usefulness of utilizing DNA/RNA adductomics to screen for nucleic acid damage.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

In vitro DNA/RNA Adductomics to Confirm DNA Damage Caused by Benzo[a]pyrene in the Hep G2 Cell Line

Takeshita

Kanaly

2019

Front. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Kalsium klorida ini juga memiliki beberapa sifat baik itu sifat fisika maupun sifat kimia (222)(223)(224)(225) . Dimana yang termasuk sifat fisika yaitu densitas, massa molar (91)(92)(93)(94)(95)(96)(97)(98)(99)(100) , titik didih, titik lebur, bau, dan viskositas. Sedangkan yang termasuk sifat kimia yaitu kelarutan dalam air.…”

Section: Analisis Gapunclassified

Calcium Chloride (CaCl2) : Characteristics and Molecular Interaction in Solution

Alfionita¹,

Zainul²

2019

Preprint

View full text Add to dashboard Cite

Kalsium klorida merupakan senyawa anorganik dengan rumus kimia CaCl2 berupa padatan kristal yang tak berwarna pada suhu kamar dan sangat larut dalam air. Dalam analisis struktur molekul Kalsium Klorida (CaCl2), riset ini bertujuan mengetahui karakteristik molekul, struktur, sifat, permukaan, jari-jari molekul, energi stabiliti dan MM2 molekul tersebut. Metoda yang digunakan yaitu penelusuran literatur dengan Endnote X7, metode pemodelan dengan menggunakan software ChemOffice 15.0, dan juga perhitungan matematis. Pada dasarnya untuk menemukan literasi jurnal yang bagus digunakanlah aplikasi Endnote X7 yang dijelaskan melalui fishbone state of art. Senyawa ini juga mempunyai total energi dan juga jari-jari molekul CaCl2 yang hasilnya bisa diketahui dengan menggunakan chemoffice 15.0 yaitu sebesar 526,865 kcal/mol dan 2.730 Å Kemudian untuk mengetahui kecepatan hanyut, konduktiviti, gerakan ion, viskositas, kelarutan dan bilangan transpor digunakan perhitungan matematis dari review jurnal mengenai kalsium klorida. Dimana kalsium klorida mempunyai kapasitas kalor (C), entropi molar standar (So), entalpi pembentukan standar (∆fH) dan energi bebas gibbs (∆fG) yang masing-masingnya mempunyai nilai C 72,89 J/molK, So 108,4 J/molK, ∆fH 795,42 kJ/mol, dan ∆fG -748,81nkJ/mol. Serta nilai kecepatan hanyut didapatkan sebesar 4,5125 V/cm setelah dilakukan perhitungan dengan menggunakan rumus. Nilai viskositas pada suhu 10oC sebesar 1.20, suhu 20oC sebesar 1.02, dan pada suhu 30oC sebesar 0,79. Nilai konduktiviti yang beragam tergantung dari suhu dan spesinya. Dimana nilai konduktiviti pada suhu 25oC sebesar 0.0617 jika nilai molarnya 0.3857 mole/L, 0.1289 jika nilai molarnya 0.905 mole/L.Hasil dari viskositas dan konduktiviti ini dituangkan dalam bentuk grafik

show abstract

“…Massa molar (136)(137)(138)(139) 311,7990 g/mol Penampilan (140)(141)(142) Kristal tidak bewarna Bau (143)(144)(145) Tidak Berbau…”

Section: Sifat Kimiaunclassified

SILVER SULFATE (Ag2SO4): MOLECULAR ANALYSIS AND ION TRANSPORT

Yurmaniati¹,

Zainul²

2018

Preprint

View full text Add to dashboard Cite

Abstrak Perak sulfat merupakan garam anorganik dengan rumus Ag2SO4. Perak sulfat ini termasuk dalam senyawa ionic karena terdapat ikatan antara logam perak dengan spesi non logam sulfat. Perak sulfat memiliki. berat molekul yaitu 311,799 gr/mol dengan tampilan kristal tidak berwarna dan tidak mudah terbakar. Senyawa ini digunakan dalam penyepuhan perak (silver plating) dan pengganti tanpa noda untuk perak nitrat. Perak Sulfat mengalami interaksi molekul dalam pelarut Air. Tujuan penelitian ini adalah untuk mengetahui karakteristik molekul dan transpor ion Perak Sulfat. Metode yang digunakan dalam penelitian ini adalah penelusuran literatur dengan Endnote X7, pemodelan komputasi, dan perhitungan matematis. Data transpor ion Perak Sulfat yaitu dengan parameter konduktivitas, viskositas, mobilitas ion, dan daya hanyut menggunakan data hasil review beberapa jurnal penelitian yang berkaitan dengan Perak Sulfat sesuai tahapan pada fishbone. Secara termokimia, perak sulfat memiliki entalpi pembentukan standar, ΔfHo 298 -715 kJ/mol dan entropi molar standar, So298 16,74 kJ/mol. Kelarutan Perak Sulfat dalam air yaitu 0,79 gr/100 mL (20 o C) dan dapat larut juga dalam pelarut asam nitrat. Hasil penelitian konduktivitas larutan Ag2SO4 semakin meningkat seiring dengan kenaikan konsentrasi persen massa sesuai grafik hasil perhitungan. Energi optimasi MM2 Minimization, Optimasi MM2 Dynamics, dan Optimasi MM2 Properties berturut-turut yaitu 210. 2194 kcal/mol, 755. 377 kcal/mol, 216. 774 kcal/mol. Kecepatan hanyut molekul perak sulfat dengan potensial Ag2SO4 3,61 V dan jarak antara elektroda 1,5 cm yaitu 2, 407 V/cm. Kata kunci : Perak Sulfat, Interaksi molekul, Pemodelan I. IntroductionPerak sulfat (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) merupakan senyawa ion dari perak dengan rumus Ag2SO4, yang digunakan dalam penyepuhan perak (silver plating) dan pengganti tanpa noda untuk perak nitrat. Garam sulfat ini stabil di bawah kondisi penggunaan dan penyimpanan biasa, meskipun ia menjadi gelap pada pajanan terhadap udara atau cahaya. Perak Sulfat (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) mengalami interaksi molekul dalam pelarut Air. Berat molekul senyawa ini yaitu 311,799 gr/mol dengan tampilan kristal tidak berwarna. Kelarutannya dalam air 0,79 gr/100 mL (20 o C) dan dapat larut juga dalam pelarut asam nitrat. Secara termokimia, perak sulfat (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) memiliki entalpi pembentukan standar, ΔfHo298 -715 kJ/mol dan entropi molar standar, So298 16,74 kJ/mol. Perak sulfat (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) tidak mudah terbakar.Perak Sulfat (Ag2SO4) (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) memiliki konduktivitas (1)(2)(3)(4)(5)(6)(7)(8)(9)(10) . Besarnya nilai konduktivitas (1-10) ditentukan oleh konsentrasi elektrolit. Muatan dalam senyawa dapat dibawa dalam bentuk electron seperti logam atau biasanya digunakan ion positif dan ion negative seperti dalam larutan elektrolit dan leburan garam. Aliran listrik dapat ditemukan dalam suatu larutan karena terdapat di ...

show abstract

Triple quadrupole mass spectrometry comparative DNA adductomics of Hep G2 cells following exposure to safrole

Cited by 15 publications

References 72 publications

In vitro DNA/RNA Adductomics to Confirm DNA Damage Caused by Benzo[a]pyrene in the Hep G2 Cell Line

In vitro DNA/RNA Adductomics to Confirm DNA Damage Caused by Benzo[a]pyrene in the Hep G2 Cell Line

Calcium Chloride (CaCl2) : Characteristics and Molecular Interaction in Solution

SILVER SULFATE (Ag2SO4): MOLECULAR ANALYSIS AND ION TRANSPORT

Contact Info

Product

Resources

About