👤 Kallol Ray

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3
Articles
3
Name variants
Also published as: Bhumika Ray, M Ray
articles
Anran Zhou, Vandana Kardam, Akhilesh Kumar +6 more · 2026 · Journal of the American Chemical Society · ACS Publications · added 2026-04-20
Mononuclear nonheme iron(III)-peroxo complexes bearing N-tetramethylated cyclam (n-TMC) ligands, [FeIII(O2)(n-TMC)]+ (n = 12, 13, and 14), Show more
Mononuclear nonheme iron(III)-peroxo complexes bearing N-tetramethylated cyclam (n-TMC) ligands, [FeIII(O2)(n-TMC)]+ (n = 12, 13, and 14), have recently shown highly intriguing reactivities in various oxidation reactions, such as the cis-dihydroxylation and C-H functionalization reactions, which were previously associated only with high-valent iron-oxo intermediates in heme and nonheme iron enzymes. Herein, we extend our study to report [FeIII(O2)(n-TMC)]+ mediated N-demethylation of N,N-dimethylanilines (DMAs), another reaction that was previously associated only with high-valent iron-oxo cores. Most importantly, we provide definitive evidence of the occurrence of electron transfer from DMAs to [FeIII(O2)(n-TMC)]+, thereby establishing an electron-transfer (ET) pathway for the N-demethylation reaction. Investigation of the ET reactivity of [FeIII(O2)(n-TMC)]+ in light of the Marcus theory of ET, and a comparison of the N-demethylation and the ET rate constants corroborate a mechanism, whereby N-demethylation of DMAs by [FeIII(O2)(n-TMC)]+ proceeds via the peroxide O-O bond cleavage of [FeIII(O2)(n-TMC)]+ to form a transient [FeIV(O2-)(O• -)(n-TMC)]+ species, which undergoes a proton-coupled electron-transfer (PCET) or an uncoupled electron transfer-proton transfer (ET/PT) in the presence of DMAs. Saturation kinetics support the rate-determining formation of [FeIV(O2-)(O• -)(n-TMC)]+ in a pre-equilibrium step with the same values of the O-O bond cleavage rate constants irrespective of the substrates, such as DMAs and one-electron oxidants. The present study corroborates that mononuclear nonheme iron(III)-peroxo cores are not mere pass-through points en route to high-valent metal-oxo intermediates, but they can play an important role in the diverse oxidation reactions of Rieske oxygenases, such as in the N-demethylation reaction. Show less
no PDF DOI: 10.1021/jacs.5c18643
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Shengdong Chen, Shengdong Wang, S Gerstberger +1262 more · 2024 · Cancer Metastasis Reviews · Springer · added 2026-04-20
Shengdong Chen, Shengdong Wang, S Gerstberger, Q Jiang, K Ganesh, D Lyden, CM Ghajar, AL Correia, JA Aguirre-Ghiso, S Cai, M Rescigno, J Massagué, AC Obenauf, J Fares, MY Fares, HH Khachfe, HA Salhab, Y Fares, TS Gerashchenko, AA Schegoleva, AA Khozyainova, EL Choinzonov, EV Denisov, RL Siegel, KD Miller, HE Fuchs, A Jemal, P Bragado, MS Sosa, X Chen, JR Cubillos-Ruiz, B Banushi, SR Joseph, B Lum, JJ Lee, F Simpson, AR Elhamamsy, BJ Metge, HA Alsheikh, LA Shevde, RS Samant, J Yang, A Griffin, Z Qiang, J Ren, M Bedi, M Ray, A Ghosh, DC Wallace, HK Kim, YH Noh, B Nilius, KS Ko, BD Rhee, N Kim, F Randow, RJ Youle, DP Boulton, MC Caino, LX Zampieri, C Silva-Almeida, JD Rondeau, P Sonveaux, R Gundamaraju, W Lu, R Manikam, Y Liu, T Wang, W Ma, Z Jia, Q Wang, M Zhang, R Bai, J Cui, L Sainero-Alcolado, J Liaño-Pons, MV Ruiz-Pérez, M Arsenian-Henriksson, F Bray, M Laversanne, H Sung, J Ferlay, I Soerjomataram, AN Giaquinto, PS Steeg, C Dumontet, JM Reichert, PD Senter, JM Lambert, A Beck, AD Waldman, JM Fritz, MJ Lenardo, J Lu, M Tan, Q Cai, N Weidner, JP Semple, WR Welch, J Folkman, D Fukumura, RK Jain, H Maeda, NC Denko, NH Kim, YH Cha, J Lee, SH Lee, JH Yang, JS Yun, WC Wang, XF Zhang, J Peng, XF Li, AL Wang, YQ Bie, D Ribatti, XL Lou, J Sun, SQ Gong, XF Yu, R Gong, H Deng, RD Schreiber, LJ Old, MJ Smyth, VS LeBleu, JT O’Connell, HK Gonzalez, H Wikman, K Pantel, MC Haigis, X Mao, J Xu, W Wang, C Liang, J Hua, J Liu, R Vessella, XL Gao, YL Tang, XH Liang, D Páez, MJ Labonte, P Bohanes, W Zhang, L Benhanim, Y Ning, K Naidoo, SE Pinder, M Esposito, S Ganesan, Y Kang, K Fizazi, M Carducci, M Smith, R Damião, J Brown, L Karsh, AT Stopeck, A Lipton, JJ Body, GG Steger, K Tonkin, RH de Boer, T Shibue, MW Brooks, RA Weinberg, N Oku, Y Tokudome, C Koike, N Nishikawa, H Mori, I Saiki, L Tentori, AS Dorio, A Muzi, PM Lacal, F Ruffini, P Navarra, S Yamada, XY Bu, V Khankaldyyan, I Gonzales-Gomez, JG McComb, WE Laug, C Manegold, J Vansteenkiste, F Cardenal, W Schuette, PJ Woll, E Ulsperger, A Alva, S Slovin, S Daignault, R Dipaola, K Pienta, KB Kim, V Prieto, RW Joseph, AH Diwan, GE Gallick, NE Papadopoulos, H Vakifahmetoglu-Norberg, AT Ouchida, E Norberg, PJ Burke, PH Willems, R Rossignol, CE Dieteren, MP Murphy, WJ Koopman, EL Mills, B Kelly, L O’Neill, N Borcherding, JR Brestoff, DE Green, N Pfanner, B Warscheid, N Wiedemann, TG Frey, CA Mannella, NS Chandel, CT Walsh, BP Tu, Y Tang, LA Sazanov, IN Watt, MG Montgomery, MJ Runswick, AG Leslie, JE Walker, O WARBURG, R Morais, K Zinkewich-Péotti, M Parent, H Wang, F Babai, M Zollinger, XL Zu, M Guppy, S Bolisetty, EA Jaimes, MD Brand, MR Duchen, SJ Annesley, PR Fisher, Y Wang, H Qi, C Duan, X Liu, T Xia, CL Kuo, BA Ponneri, YC Lin, HW Lien, YK Lo, HY Chou, A Rossi, P Pizzo, R Filadi, R Rizzuto, D De Stefani, A Raffaello, C Mammucari, A Tosatto, R Sommaggio, C Kummerow, RB Bentham, TS Blacker, T Berecz, PE Czabotar, AJ Garcia-Saez, T Vervliet, JB Parys, G Bultynck, C Tse, AR Shoemaker, J Adickes, MG Anderson, J Chen, S Jin, T Oltersdorf, SW Elmore, RC Armstrong, DJ Augeri, BA Belli, SE Weinberg, LA Sena, AP West, W Khoury-Hanold, M Staron, MC Tal, CM Pineda, SM Lang, LV Sinclair, J Rolf, E Emslie, YB Shi, PM Taylor, DA Cantrell, EL Carr, A Kelman, GS Wu, R Gopaul, E Senkevitch, A Aghvanyan, MM Kaminski, SW Sauer, CD Klemke, D Süss, JG Okun, PH Krammer, MM Kamiński, M Kamiński, S Opp, T Ruppert, P Grigaravičius, RJ DeBerardinis, A Mancuso, E Daikhin, I Nissim, M Yudkoff, S Wehrli, WX Zong, JD Rabinowitz, E White, J Fan, JJ Kamphorst, R Mathew, MK Chung, T Shlomi, JW Locasale, AA Khutornenko, VV Roudko, BV Chernyak, AB Vartapetian, PM Chumakov, AG Evstafieva, S Lu, LL Wu, L Yang, J Wang, C Mao, Y Zhang, G Lei, Y Yan, H Lee, L Alberghina, C De Duve, R Wattiaux, S Geisler, KM Holmström, D Skujat, FC Fiesel, OC Rothfuss, PJ Kahle, K Polyak, Y Li, H Zhu, C Lengauer, JK Willson, SD Markowitz, BE Baysal, RE Ferrell, JE Willett-Brozick, EC Lawrence, D Myssiorek, A Bosch, JL Spees, SD Olson, MJ Whitney, DJ Prockop, T Saha, C Dash, R Jayabalan, S Khiste, A Kulkarni, K Kurmi, S Delaunay, G Pascual, B Feng, K Klann, M Behm, A Hotz-Wagenblatt, Z Gan, T Fu, DP Kelly, RB Vega, H Zhou, Z Dai, J Li, X Chang, T Farmer, N Naslavsky, S Caplan, YY Jeong, HH Liu, YT Cao, LL Zhang, F Huang, C Yi, A Picca, J Faitg, J Auwerx, L Ferrucci, D D’Amico, KF Macleod, LP Poole, C Li, X Cheng, H Yuan, S Zhu, Y Zheng, C Huang, L Lu, K Yu, J Zhao, M Chen, C Zhang, Y Zhao, X Yue, H Wu, S Huang, AH Chourasia, K Tracy, C Frankenberger, ML Boland, MN Sharifi, LE Drake, J Okami, DM Simeone, CD Logsdon, C Shi, Y Cai, N Hu, S Ma, E Agarwal, I Bertolini, JH Seo, JC Ghosh, L Wu, D Zhang, L Zhou, Y Pei, Y Zhuang, W Cui, J Liang, Y Yang, L Bai, F Li, E Li, X Sun, H Cao, L Zhan, C Yin, G Wang, P Liang, S Zhao, L Cheng, Y Shi, Q Yun, H Yang, L Li, DB Rivadeneira, DI Gabrilovich, ET Kim, S Herkenne, O Ek, M Zamberlan, A Pellattiero, M Chergova, I Chivite, H Li, H Chang, L Du, J Hai, X Geng, H Tang, S Peng, Y Dong, X Yang, P Yang, M Lin, R Wu, X Wang, B Yang, AJ Levine, C Yan, TS Li, M Murai, M Toyota, H Suzuki, A Satoh, Y Sasaki, K Akino, M Erkan, J Kleeff, I Esposito, T Giese, K Ketterer, MW Büchler, TJ Humpton, B Alagesan, GM DeNicola, D Lu, GN Yordanov, CS Leonhardt, TE O’Sullivan, LR Johnson, HH Kang, JC Sun, Z Chen, L Liu, Q Cheng, M Giacomello, A Pyakurel, C Glytsou, L Scorrano, W Chen, H Zhao, AP Trotta, JE Chipuk, J Zhang, M Yu, Y Xie, Y Huang, DW Wolff, YC Chae, AV Kossenkov, YG Lee, HY Tang, D Karimi, N Pedram, F Kakaei, M Asadi, E Poursaei, TA Kermani, X Zhang, T Song, B Wu, Z Zhang, TE Li, D Xu, Y Zhu, BY Hu, B Cunniff, AJ McKenzie, NH Heintz, AK Howe, A Aguinaldo, E Wait, KG Bryant, JN Moloney, TG Cotter, JM Cameron, M Gabrielsen, YH Chim, J Munro, EJ McGhee, D Sumpton, H Alshaabi, N Shannon, R Gravelle, S Milczarek, T Messier, DC Altieri, D Liu, Y Gao, J Yin, Y Feng, PK Melwani, BN Pandey, N Rabas, S Palmer, L Mitchell, S Ismail, A Gohlke, JS Riley, G Pinto, C Brou, C Zurzolo, Z Nahacka, R Zobalova, M Dubisova, J Rohlena, J Neuzil, J Novak, SP Desai, SN Bhatia, M Toner, D Irimia, Q Li, L Yao, Y Wei, S Geng, C He, H Jiang, J Pasquier, BS Guerrouahen, TH Al, P Ghiabi, M Maleki, N Abu-Kaoud, T Ahmad, S Mukherjee, B Pattnaik, M Kumar, S Singh, L Ippolito, A Morandi, ML Taddei, M Parri, G Comito, A Iscaro, JC Chang, HS Chang, YC Wu, WL Cheng, TT Lin, HJ Chang, CU Kidwell, JR Casalini, S Pradeep, SD Scherer, D Greiner, D Bayik, SJ Hanna, K McCoy-Simandle, E Leung, A Genna, J Condeelis, D Cox, F Xu, E Yinwang, Y Xue, EI Buzas, K Takenaga, N Koshikawa, H Nagase, H Mou, F Guan, X Wu, J Zhou, Y Lin, Y He, C Fan, E Abad, A Lyakhovich, C Salaud, A Alvarez-Arenas, F Geraldo, J Belmonte-Beitia, GF Calvo, C Gratas, T Delvaeye, P Vandenabeele, L Leybaert, DV Krysko, J Ariazi, A Benowitz, V De Biasi, ML Den Boer, S Cherqui, H Cui, R Schulz, PM Görge, A Görbe, P Ferdinandy, PD Lampe, Y Yao, XL Fan, D Jiang, X Li, ZB Xu, D Ren, P Zheng, S Zou, Y Gong, J Duan, I Saenz-de-Santa-Maria, P Chastagner, E Perthame, C Delmas, C Toulas, DR Welch, C Foster, I Rigoutsos, P Huang, Z Wang, W Xu, H Simonnet, N Alazard, K Pfeiffer, C Gallou, C Béroud, J Demont, Y Wan, Q Zou, LM Tseng, PH Yin, CW Chi, CY Hsu, CW Wu, LM Lee, WY Hung, AF Li, SH Li, CC Hsu, HC Lee, YH Wei, Y Yuan, YS Ju, Y Kim, CJ Yoon, H Tu, J Gu, QH Meng, J Kim, JW Davis, RL Correia, SM Oba-Shinjo, M Uno, N Huang, SK Marie, WW Jiang, B Masayesva, M Zahurak, AL Carvalho, E Rosenbaum, E Mambo, MM Kim, JD Clinger, BG Masayesva, PK Ha, ML Zahurak, WH Westra, CS Lin, SC Chang, LS Wang, TY Chou, WH Hsu, DH Lee, JH Lee, DK Kim, DY Keum, JG Dai, ZY Zhang, QX Liu, JX Min, E Reznik, ML Miller, Y Şenbabaoğlu, N Riaz, J Sarungbam, SK Tickoo, L Moro, AA Arbini, E Marra, M Greco, D Kazdal, A Harms, V Endris, R Penzel, M Kriegsmann, F Eichhorn, S Chaudhary, S Ganguly, A Singh, JK Palanichamy, A Chopra, R Bakhshi, J Boultwood, C Fidler, KI Mills, PM Frodsham, R Kusec, A Gaiger, A Cormio, F Guerra, G Cormio, V Pesce, F Fracasso, V Loizzi, KS Vikramdeo, S Anand, MA Khan, M Khushman, MJ Heslin, G Pietka, W Kukwa, E Bartnik, A Scińska, AM Czarnecka, Z Tian, Q Yang, B Shi, P Hou, G Amuthan, G Biswas, HK Ananadatheerthavarada, C Vijayasarathy, HM Shephard, NG Avadhani, Y Xu, PK Kopinski, LN Singh, S Zhang, MT Lott, DJ Tan, RK Bai, LJ Wong, A Chatterjee, D Sidransky, JB Stewart, B Alaei-Mahabadi, R Sabarinathan, T Samuelsson, J Gorodkin, CM Gustafsson, KL Hertweck, S Dasgupta, MY Kim, H Kim, JA Sung, J Koh, S Cho, DH Chung, K Kaneva, D Merkurjev, D Ostrow, A Ryutov, P Triska, K Stachelek, K Tsuji, Y Kida, S Yamamoto, Y Shinozaki, T Watanabe, H Takeuchi, A Fujimoto, DS Hoon, KE de Visser, JA Joyce, N Ron-Harel, D Santos, JM Ghergurovich, PT Sage, A Reddy, SB Lovitch, MN Serasinghe, SY Wieder, TT Renault, R Elkholi, JJ Asciolla, JL Yao, T Yu, BS Jhun, Y Yoon, C Schwindling, A Quintana, E Krause, M Hoth, L Simula, F Nazio, S Campello, H Kong, M Song, B Zhang, L Zhang, Z Li, S Lin, T Zheng, B Hao, K Sinha, J Das, PB Pal, PC Sil, A Peña-Blanco, AJ García-Sáez, GR Bantug, C Hess, CH Chang, JD Curtis, LJ Maggi, B Faubert, AV Villarino, D O’Sullivan, M Philip, A Schietinger, N Dumauthioz, B Tschumi, M Wenes, B Marti, F Franco, NE Scharping, AV Menk, RS Moreci, RD Whetstone, RE Dadey, SC Watkins, MD Buck, GR Klein, DE Sanin, YR Yu, H Imrichova, T Chao, Z Xiao, M Gao, SA Vardhana, MA Hwee, M Berisa, DK Wells, KE Yost, B King, J Ogando, ME Sáez, J Santos, C Nuevo-Tapioles, M Gut, A Esteve-Codina, DS Thommen, VH Koelzer, P Herzig, A Roller, M Trefny, S Dimeloe, JC Beltra, S Manne, MS Abdel-Hakeem, M Kurachi, JR Giles, P Vignali, BR Ford, NL Rittenhouse, AC Scott, F Dündar, P Zumbo, SS Chandran, CA Klebanoff, M Shakiba, I Vitale, G Manic, LM Coussens, G Kroemer, L Galluzzi, X Geeraerts, J Fernández-Garcia, FJ Hartmann, KE de Goede, L Martens, Y Elkrim, R Xu, H Gu, E Zhang, J Qu, W Cao, MN Hasan, O Capuk, SM Patel, D Sun, Y Han, SY Rodriguez, S Siddiqui, C Treese, G Di Conza, CH Tsai, H Gallart-Ayala, L Zaffalon, PS Liu, T Teav, S Christen, RE Menjivar, ZC Nwosu, W Du, KL Donahue, HS Hong, C Espinoza, Z He, M Huang, T Liu, H Xu, R Kalluri, C Sun, Z Qin, LM Becker, AP Vo, MP Cain, D Tampe, L Bizarro, T Fiaschi, A Marini, E Giannoni, P Gandellini, A De Donatis, SJ Parker, CR Amendola, K Hollinshead, Q Yu, K Yamamoto, J Encarnación-Rosado, CM Sousa, DE Biancur, CJ Halbrook, MH Sherman, A Achreja, TL Yeung, LS Mangala, C Han, TD Bhagat, D Von Ahrens, M Dawlaty, Y Zou, J Baddour, M Bacci, A Angelin, L Gil-de-Gómez, S Dahiya, J Jiao, L Guo, MH Levine, MJ Watson, SJ Mullett, AE Overacre-Delgoffe, RM Peralta, S Grebinoski, J Qiu, T Noguchi, Y Luo, J Ma, L Qi, T Knifley, DW Piecoro, P Rychahou, S Li, W Dai, W Mo, J Feng, S Andrzejewski, SP Gravel, M Pollak, J St-Pierre, K Rohlenova, K Sachaphibulkij, J Stursa, A Bezawork-Geleta, J Blecha, B Endaya, LF Dong, VJ Jameson, D Tilly, L Prochazka, K Valis, L Song, C Liu, Q Zhang, X Liang, C Ramachandran, PK Nair, A Alamo, CB Cochrane, E Escalon, SJ Melnick, MK Shin, YD Jeon, SH Hong, SH Kang, JY Kee, JS Jin, L Dang, K Yen, EC Attar, D Rohle, J Popovici-Muller, N Palaskas, S Turcan, C Grommes, C Campos, A Alistar, BB Morris, R Desnoyer, HD Klepin, K Hosseinzadeh, C Clark, TS Pardee, K Lee, J Luddy, C Maturo, R Rodriguez, S Isom, C Xie, J Jin, X Bao, WH Zhan, TY Han, M Gan, O Tusskorn, T Khunluck, A Prawan, L Senggunprai, V Kukongviriyapan, ND Nguyen, D Lin, TN Fujimoto, JM Molkentine, T Peng, H Fu, Y Guo, P Hu, J Shi, P Yuan, W Yu, J Lin, A Xu, X Xu, LC Nava, S Tiberti, PA Corsetto, F Conte, P Tyagi, M Machwirth, A Jaccard, T Wyss, N Maldonado-Pérez, ST Teoh, A Lepez, H Yan, DW Parsons, G Jin, R McLendon, BA Rasheed, W Yuan, C Bardella, PJ Pollard, I Tomlinson, M Bolzoni, M Chiu, F Accardi, R Vescovini, I Airoldi, P Storti, J Márquez, FJ Alonso, JM Matés, JA Segura, M Martín-Rufián, JA Campos-Sandoval, MI Gross, SD Demo, JB Dennison, L Chen, T Chernov-Rogan, B Goyal, A Le, AN Lane, M Hamaker, S Bose, A Gouw, J Barbi, Y Xiang, ZE Stine, J Xia, Y Lu, RS O’Connor, BJ Altman, A Cassidy-Stone, E Ingerman, C Song, C Yoo, T Kuwana, A Ruiz, E Alberdi, C Matute, J Chwa, ME Oh, T Abeywardana, Q Xie, Q Wu, CM Horbinski, WA Flavahan, K Yang, W Zhou, MH You, MJ Jeon, SR Kim, WK Lee, SY Cheng, G Jang, SA Rosenberg, P Sharma, S Hu-Lieskovan, JA Wargo, A Ribas, D Wang, H Yu, F Zhou, H Zhang, AD Garg, A Kaczmarek, O Krysko, P Agostinis, EJ Lee, GH Nam, NK Lee, M Kih, E Koh, YK Kim, S Pierini, C Fang, S Rafail, JG Facciponte, J Huang, F De Sanctis, S Pustylnikov, F Costabile, S Beghi, A Facciabene, C Wei, O Yeku, RJ Brentjens, JC Yang, CH June, SR Riddell, TN Schumacher, ML Davila, I Riviere, J Park, LG Cowell, X Si, M Shao, X Teng, G Xiao, H Huang, M Sukumar, GU Mehta, SJ Patel, R Roychoudhuri, JG Crompton, NS Joshi, A Chandele, HK Lee, DR Urso, J Hagman, L Gattinoni, NP Restifo, K Klein, K He, AI Younes, HB Barsoumian, D Chen, T Ozgen, B Kalyanaraman, G Cheng, J Zielonka, O Ouari, M Lopez, D McAllister, K Boyle, LL Bu, GT Yu, WW Deng, L Mao, JF Liu, SR Ma Show less
Mitochondria are central actors in diverse physiological phenomena ranging from energy metabolism to stress signaling and immune modulation. Accumulating scientific evidence points to the critical inv Show more
Mitochondria are central actors in diverse physiological phenomena ranging from energy metabolism to stress signaling and immune modulation. Accumulating scientific evidence points to the critical involvement of specific mitochondrial-associated events, including mitochondrial quality control, intercellular mitochondrial transfer, and mitochondrial genetics, in potentiating the metastatic cascade of neoplastic cells. Furthermore, numerous recent studies have consistently emphasized the highly significant role mitochondria play in coordinating the regulation of tumor-infiltrating immune cells and immunotherapeutic interventions. This review provides a comprehensive and rigorous scholarly investigation of this subject matter, exploring the intricate mechanisms by which mitochondria contribute to tumor metastasis and examining the progress of mitochondria-targeted cancer therapies. Show less
đź“„ PDF DOI: 10.1007/s10555-024-10211-9
mitochondria review
Bhumika Ray, Bhumika Gupta, Ranjana Mehrotra · 2019 · Journal of biomolecular structure & dynamics · Taylor & Francis · added 2026-04-20
Platinum-derived chemodrugs constitute an active class in cancer therapeutics. Besides being potent against various solid tumors, oxaliplatin has been recognized as the first platinum compound to be a Show more
Platinum-derived chemodrugs constitute an active class in cancer therapeutics. Besides being potent against various solid tumors, oxaliplatin has been recognized as the first platinum compound to be approved for the treatment of colorectal cancer. Structurally, oxaliplatin consists of a platinum metal complexed to oxalate and diaminocyclohexane (DACH) and exert its anticancer action by inhibiting DNA replication and transcription. The present study highlights the binding properties of oxaliplatin with calf thymus DNA using spectroscopic methods to comprehend its binding mechanism at molecular level to overcome associated cellular resistance and side effects. Attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopic outcomes confirm that oxaliplatin is a covalent binding agent and also provide sequence specificity in DNA molecule. Infrared spectral results further indicate that oxaliplatin alkylates purine nitrogenous bases majorly guanine residues (G) in the major groove via formation of either interstrand or intrastrand guanine-guanine d(GpG) and guanine-adenine d(GpA) (N7 position) crosslinks accompanied with a slight external binding to sugar-phosphate backbone. Again, circular dichroism (CD) spectroscopic results suggest subtle conformational changes in DNA molecule due to its complexation with oxaliplatin and duplex attains an intermediate conformational state, having characteristics of both B- and C-forms. Further, a moderate binding strength of 4.12 ± 0.2 × 104 M-1 for the interaction has been estimated via ultraviolet-visible spectroscopy. The inferences obtained from these investigations are encouraging and can form the basis for further exploration in the field of rational drug development based on platinum compounds possessing preferential binding for nucleic acid with improved competence. Communicated by Ramaswamy H. Sarma. Show less
no PDF DOI: 10.1080/07391102.2018.1531059
Pt anticancer carboxylate coordination-chemistry