Open Access Theses and Dissertations

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You searched for subject:(Phosphatidic acids). Showing records 1 – 3 of 3 total matches.

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Michigan State University

1. Lu, Binbin. Functional analysis of a phosphatidic acid transport system in Arabidopsis thaliana.

Degree: PhD, Department of Biochemistry and Molecular Biology, 2009, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:17024 

Subjects/Keywords: Phosphatidic acids – Physiological transport; Arabidopsis thaliana – Physiology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Lu, B. (2009). Functional analysis of a phosphatidic acid transport system in Arabidopsis thaliana. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:17024

Chicago Manual of Style (16th Edition):

Lu, Binbin. “Functional analysis of a phosphatidic acid transport system in Arabidopsis thaliana.” 2009. Doctoral Dissertation, Michigan State University. Accessed February 28, 2021. http://etd.lib.msu.edu/islandora/object/etd:17024.

MLA Handbook (7th Edition):

Lu, Binbin. “Functional analysis of a phosphatidic acid transport system in Arabidopsis thaliana.” 2009. Web. 28 Feb 2021.

Vancouver:

Lu B. Functional analysis of a phosphatidic acid transport system in Arabidopsis thaliana. [Internet] [Doctoral dissertation]. Michigan State University; 2009. [cited 2021 Feb 28]. Available from: http://etd.lib.msu.edu/islandora/object/etd:17024.

Council of Science Editors:

Lu B. Functional analysis of a phosphatidic acid transport system in Arabidopsis thaliana. [Doctoral Dissertation]. Michigan State University; 2009. Available from: http://etd.lib.msu.edu/islandora/object/etd:17024


Georgia Tech

2. Urs, Aarti N. Reciprocal binding of sphingosine and phosphatidic acid to steroidogenic factor 1 regulates the transcription of CYP17.

Degree: MS, Biology, 2005, Georgia Tech

URL: http://hdl.handle.net/1853/7638 

Steroidogenic factor (SF1) is an orphan nuclear receptor that is essential for steroid hormone-biosynthesis and endocrine development. Recent studies have demonstrated that phospholipids are ligands for SF1. In the present study our aim was to identify endogenous ligands for SF1 and characterize their functional significance in mediating cAMP-dependent transcription of human CYP17. Using mass spectrometry we show that in H295R adrenocortical cells SF1 is bound to sphingosine (SPH) under basal conditions and that cAMP stimulation decreases the amount of SPH bound to the receptor. We also show that silencing both acid and neutral ceramidases using siRNA induces CYP17 mRNA expression, suggesting that SPH acts as an inhibitory ligand. In vitro analysis of ligand binding using scintillation proximity assays show that several sphingolipids and phospholipids, including phosphatidic acid (PA), can compete with [3H]SPH for binding to SF1, suggesting that SF1 may have more than one ligand and binding specificity may change with the changes in intracellular fluxes of phospholipids. Further, phosphatidic acid (PA) induces SF1-dependent transcription of CYP17 reporter constructs. Inhibition of diacyglycerol kinase (DAGK) activity using R59949 and silencing DAGK- expression attenuates SF1-dependent CYP17 transcriptional. We propose that PA is an activating ligand for SF1 and that cAMP-stimulated activation of SF1 takes place by displacement of SPH. Advisors/Committee Members: Marion Sewer (Committee Chair), Alfred Merrill (Committee Member), Donald Doyle (Committee Member), Harish Radhakrishna (Committee Member).

Subjects/Keywords: CYP17; Sphingosine; Phosphatidic acids; Steroidogenic factor 1; Transcription factors; Steroid hormones Synthesis; Sphingosine; Pregnenolone; Phospholipids; Ligands

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Urs, A. N. (2005). Reciprocal binding of sphingosine and phosphatidic acid to steroidogenic factor 1 regulates the transcription of CYP17. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/7638

Chicago Manual of Style (16th Edition):

Urs, Aarti N. “Reciprocal binding of sphingosine and phosphatidic acid to steroidogenic factor 1 regulates the transcription of CYP17.” 2005. Masters Thesis, Georgia Tech. Accessed February 28, 2021. http://hdl.handle.net/1853/7638.

MLA Handbook (7th Edition):

Urs, Aarti N. “Reciprocal binding of sphingosine and phosphatidic acid to steroidogenic factor 1 regulates the transcription of CYP17.” 2005. Web. 28 Feb 2021.

Vancouver:

Urs AN. Reciprocal binding of sphingosine and phosphatidic acid to steroidogenic factor 1 regulates the transcription of CYP17. [Internet] [Masters thesis]. Georgia Tech; 2005. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/1853/7638.

Council of Science Editors:

Urs AN. Reciprocal binding of sphingosine and phosphatidic acid to steroidogenic factor 1 regulates the transcription of CYP17. [Masters Thesis]. Georgia Tech; 2005. Available from: http://hdl.handle.net/1853/7638

3. 山本, 梓司. Protective and therapeutic role of 2-carba-cyclic phosphatidic acid in demyelinating disease. : 脱髄性疾患における環状ホスファチジン酸誘導体の脱髄抑制及び治療効果.

Degree: 博士(医学), 2018, Saitama Medical University / 埼玉医科大学

URL: http://id.nii.ac.jp/1386/00000615/ 

Multiple sclerosis is a neuroinflammatory demyelinating and neurodegenerative disease of the central nervous system characterized by recurrent and progressive demyelination/remyelination cycles, neuroinflammation, oligodendrocyte loss, demyelination, and axonal degeneration. Cyclic phosphatidic acid (cPA) is a natural phospholipid mediator with a unique cyclic phosphate ring structure at the sn-2 and sn-3 positions of the glycerol backbone. We reported earlier that cPA elicits a neurotrophin-like action and protects hippocampal neurons from ischemia-induced delayed neuronal death. We designed, chemically synthesized, and metabolically stabilized derivatives of cPA: 2-carba-cPA (2ccPA), a synthesized compound in which one of the phosphate oxygen molecules is replaced with a methylene group at the sn-2 position. In the present study, we investigated whether 2ccPA exerts protective effects in oligodendrocytes and suppresses pathology in the two most common mouse models of multiple sclerosis.

To evaluate whether 2ccPA has potential beneficial effects on the pathology of multiple sclerosis, we investigated the effects of 2ccPA on oligodendrocyte cell death in vitro and administrated 2ccPA to mouse models of experimental autoimmune encephalomyelitis (EAE) and cuprizone-induced demyelination.

We demonstrated that 2ccPA suppressed the CoCl

-induced increase in the Bax/Bcl-2 protein expression ratio and phosphorylation levels of p38MAPK and JNK protein. 2ccPA treatment reduced cuprizone-induced demyelination, microglial activation, NLRP3 inflammasome, and motor dysfunction. Furthermore, 2ccPA treatment reduced autoreactive T cells and macrophages, spinal cord injury, and pathological scores in EAE, the autoimmune multiple sclerosis mouse model.

We demonstrated that 2ccPA protected oligodendrocytes via suppression of the mitochondrial apoptosis pathway. Also, we found beneficial effects of 2ccPA in the multiperiod of cuprizone-induced demyelination and the pathology of EAE. These data indicate that 2ccPA may be a promising compound for the development of new drugs to treat demyelinating disease and ameliorate the symptoms of multiple sclerosis.

平成29年度

Subjects/Keywords: Animals; Anti-Inflammatory Agents; Apoptosis; Cell Differentiation; Cell Line, Transformed; Cuprizone; Demyelinating Diseases; Disease Models, Animal; Female; Gene Expression Regulation; Humans; MAP Kinase Signaling System; Male; Mice; Mice, Inbred C57BL; Monoamine Oxidase Inhibitors; Myelin Sheath; NLR Family, Pyrin Domain-Containing 3 Protein; Phosphatidic Acids; Proto-Oncogene Proteins c-bcl-2; p38 Mitogen-Activated Protein Kinases

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

山本, . (2018). Protective and therapeutic role of 2-carba-cyclic phosphatidic acid in demyelinating disease. : 脱髄性疾患における環状ホスファチジン酸誘導体の脱髄抑制及び治療効果. (Thesis). Saitama Medical University / 埼玉医科大学. Retrieved from http://id.nii.ac.jp/1386/00000615/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

山本, 梓司. “Protective and therapeutic role of 2-carba-cyclic phosphatidic acid in demyelinating disease. : 脱髄性疾患における環状ホスファチジン酸誘導体の脱髄抑制及び治療効果.” 2018. Thesis, Saitama Medical University / 埼玉医科大学. Accessed February 28, 2021. http://id.nii.ac.jp/1386/00000615/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

山本, 梓司. “Protective and therapeutic role of 2-carba-cyclic phosphatidic acid in demyelinating disease. : 脱髄性疾患における環状ホスファチジン酸誘導体の脱髄抑制及び治療効果.” 2018. Web. 28 Feb 2021.

Vancouver:

山本 . Protective and therapeutic role of 2-carba-cyclic phosphatidic acid in demyelinating disease. : 脱髄性疾患における環状ホスファチジン酸誘導体の脱髄抑制及び治療効果. [Internet] [Thesis]. Saitama Medical University / 埼玉医科大学; 2018. [cited 2021 Feb 28]. Available from: http://id.nii.ac.jp/1386/00000615/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

山本 . Protective and therapeutic role of 2-carba-cyclic phosphatidic acid in demyelinating disease. : 脱髄性疾患における環状ホスファチジン酸誘導体の脱髄抑制及び治療効果. [Thesis]. Saitama Medical University / 埼玉医科大学; 2018. Available from: http://id.nii.ac.jp/1386/00000615/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.