Perspective - Journal of Pediatric Neurological Disorders (2022) Volume 5, Issue 3

SELDI-TOF-MS Analysis of Transcriptional Activation Protein Binding to Response Elements Regulating Carcinogenesis Enzymes

Opeyemi Oluwasanmi Adeloye*

Rosad Neurodegenerative Research Institute Jos, University of Medical Science Teaching Hospital, Ondo

*Corresponding Author:
Opeyemi Oluwasanmi Adeloye Rosad Neurodegenerative Research Institute Jos, University of Medical Science Teaching Hospital, Ondo E-mail:

Received: 02-Jun-2022, Manuscript No. pnn-22-421014; Editor assigned: 06-June-2022, PreQC No. pnn-22- 421014(PQ); Reviewed: 20-Jun-2022, QC No. pnn-22-421014; Revised: 23-Jun-2022, Manuscript No. pnn-22- 421014(R); Published: 30-Jun-2022, DOI: 10.37532/pnn.2022.5(3).58-59


The risk from chemical carcinogens and environmental toxins relies on the metabolic balance between bioactivation and detoxification enzymes. Therefore, agents that alter catalyst expression area unit vital factors in toxicity. sweetening or suppression of enzyme activities through organic phenomenon is partly regulated by interactions between specific polymer promoter response parts and specific transcription proteins. DNAprotein interactions area unit dependent upon translocation of proteins from the living substance to the nucleus and the affinity of proteins for binding to transcription promoter sequences. A key think about both processes is that the intracellular reaction state, that influences protein-protein interactions and protein-DNA binding and might be altered by exposure to electrophiles, antioxidants and oxidative stress.


xenobiotics • biotransformation • P450 (CYP) enzymes • haemoprotein


Environmental chemicals and xenobiotic area unit usually metabolized to cytotoxic compounds by mammalian enzymes either at intervals the liver or in extra hepatic cells. In general, phase I clinical trial enzymes introduce a practical cluster onto xenobiotic that increase their hydrophilicity [1]. clinical test enzymes then conjugate the xenobiotic, greatly increasing their hydrophilicity and promoting their excretion However, a phase I clinical trial oxidization reaction or a clinical test conjugation may very well increase the reactivity of a substance to associate electrophile capable of binding to cellular macromolecules like DNA. The general toxicity is usually determined by the balance between the expression of those activating and detoxifying enzymes. This balance will be shifted by effects on the transcriptional regulation of those enzymes at intervals a selected tissue [2]. Biotransformation of xenobiotics could generate intracellular aerobic stress that may influence the expression of those metabolic enzymes through each up regulation and down regulation of their transcription. Environmental carcinogens, like the polycyclic aromatic hyrdrocarbon, benzo pyrene (BP) re metabolized during a series of protein steps to come up with electrophililc compounds that may bind to DNA. chemical change by haemoprotein P450 (CYP) enzymes, significantly CYP 1A1 and 1B1 in combination with epoxide hydrolase generates the last word polymer binding electrophile seven,8- dihydroxy- 9,10-oxy-7,8,9,10-tetrahydrobenzo pyrene (BPDE). BPDE, further as precursor epoxides, can be inactivated by conjugation with glutathione, catalyzed by glutathione S-transferase (GST). Quinones that probably make to reaction athletics and reactive atomic number 8 species area unit enzymatically inactivated by NADPH:quinone enzyme (NQO1). Each of those inactivation enzymes area unit induced by aerobic stress, antioxidants and electrophilic metabolite. Aerobic stress seems to conjointly play a restrictive role within the expression of a number of the activation enzymes concerned within the conversion of BP to BPDE [3].


Preliminary studies were done to see optimum conditions for cross and attachment of double-stranded oligonucleotide to the PS20 epoxide surface, incubation of macromolecule (c-Jun) for binding to the oligonucleotide, laundry to extend specific binding and analysis on the SELDI instrument. Knowledge area unit reported within the strategies underneath acceptable headings. Determination of onedimensionality and saturation of chip surface with oligonucleotide to achieve saturation of the chip surface specified sequent experiments with transcription proteins would be supported most target sequences; variable concentrations of hybridized oligonucleotide were ready. Application of those concentrations to the chip surface was exhausted a Constant 10μL volume specified zero to1000 pmol were obtainable for binding [4]. Recombinant c-Jun macromolecule at a set quantity of forty two pmol was incubated with the oligonucleotide on the chip surface. As indicated in Figure one, increasing amounts of c-Jun (indicated by MW 35375 and chemical compound at MW 70741 in chromatograms) were certain because the quantity of oligonucleotide was inflated to five hundred pmol. The saturation curve in Figure a pair of indicates associate estimate of roughly 250 pmol of oligonucleotide for maximum binding of the forty two pmol of the c-Jun chemical compound. Sequent experiments were so performed with ten applications from hybridized oligonucleotides at twenty five twenty five [5].

Conflict of Interests





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