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Teramoto T, Minemoto S, Majima T, Mizuno T, Mun JH, Yagishita A, Decleva P, Tsuru S. Basic studies toward ultrafast soft x-ray photoelectron diffraction; its application to probing local structure in iodobenzene molecules. Struct Dyn 2022; 9:024303. [PMID: 35496382 PMCID: PMC9050171 DOI: 10.1063/4.0000141] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Ultrafast x-ray photoelectron diffraction (UXPD) for free molecules has a promising potential to probe the local structures of the molecules in an element-specific fashion. Our UXPD scheme consists of three steps: (1) near-infrared laser (NIR) with ns pulse duration aligns sample molecules, (2) ultra-violet laser with fs pulse duration pumps the aligned molecules, and (3) soft x-ray free-electron laser (SXFEL) with fs pulse duration probes the molecules by measuring x-ray photoelectron diffraction (XPD) profiles. Employing steps of (1) and (3), we have measured I 3d XPD profiles from ground state iodobenzene aligned by the NIR laser with the SXFEL. Then, we have intensively calculated I 3d XPD profiles with density functional theory, taking degrees of alignments of the molecules into account, to extract a distance between C and I atoms in iodobenzene from the experimental I 3d XPD profiles. Although we have failed to determine the distance from the comparison between the experimental and theoretical results, we have succeeded in concluding that the degeneracies of the initial state eliminate the sensitivity on molecular structure in the I 3d XPD profiles. Thus, the observation of fine structures in the XPD profiles could be expected, if a nondegenerate molecular orbital is selected for a probe of UXPD. Finally, we have summarized our criteria to perform UXPD successfully: (1) to use SXFEL, (2) to prepare sample molecules with the degree of alignment higher than 0.8, and (3) to select a photoemission process from a nondegenerate inner-shell orbital of sample molecules.
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Affiliation(s)
- T. Teramoto
- Institute for Radiation Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - S. Minemoto
- Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T. Majima
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
| | - T. Mizuno
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - J. H. Mun
- Center for Attosecond Science and Technology, Max Planck POSTECH/KOREA Research Initiative, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - A. Yagishita
- Institute of Materials Structure Science, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - P. Decleva
- CNR IOM and DSCF, Università degli Studi di Trieste, Via L. Giorgieri 1, I-34127 Trieste, Italy
| | - S. Tsuru
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
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Yang MY, Kim JM, Kim GW, Mun JH, Song M, Ko HC, Kim BS, Kim HS, Kim MB. The clinical and histopathological characteristics of early-onset basal cell carcinoma in Asians. J Eur Acad Dermatol Venereol 2016; 31:75-80. [PMID: 27357061 DOI: 10.1111/jdv.13793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 05/02/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Basal cell carcinoma (BCC) is by far the most common cancer in white populations. In addition, recent reports have demonstrated an increasing incidence of BCC in Korea. We have observed a significant number of early-onset BCC cases in which the disease occurred in patients younger than 50 years. OBJECTIVE To investigate the clinicopathological characteristics of early-onset BCC in an Asian population, specifically in Koreans. METHODS One hundred and five patients with early-onset BCC were enrolled from a total of 1047 BCC patients who underwent surgery between January 1997 and December 2014 (942 patients over the age of 50 years were designated as the control group). RESULTS Early-onset BCC accounted for 10.03% of all 1047 cases and the incidence over time displayed an incremental trend. The early-onset group displayed similar results as the control group, with a predominance of female BCC patients and the majority of tumours displaying the following characteristics: small in size, occurring in sun-exposed areas and belonging to the noduloulcerative clinical subtype and nodular histopathological subtype. In comparison with a previous study in a Western population, the incidence of the disease in non-exposed areas of the body, as well as the proportion of tumours of the superficial histological subtype, were lower in Asian patients. CONCLUSION Although the clinicopathological characteristics of BCC are well-known, these characteristics have not been determined for early-onset BCC in an Asian population. Therefore, this study is the first report on early-onset BCC in Asians, specifically in a Korean patient group.
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Affiliation(s)
- M Y Yang
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - J M Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - G W Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - J H Mun
- Department of Dermatology, School of Medicine, Seoul National University, Seoul, Korea
| | - M Song
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - H C Ko
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - B S Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - H S Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - M B Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
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Kim WI, Kim JM, Kim GW, Mun JH, Song M, Kim HS, Kim BS, Kim MB, Ko HC. Subacute cutaneous lupus erythematosus induced by capecitabine: 5-FU was innocent. J Eur Acad Dermatol Venereol 2015; 30:e163-e164. [PMID: 26551520 DOI: 10.1111/jdv.13468] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- W I Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Department of Dermatology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - J M Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Department of Dermatology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - G W Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - J H Mun
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Department of Dermatology, Pusan National University Yangsan Hospital, Yangsan, Korea.,Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - M Song
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - H S Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - B S Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - M B Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - H C Ko
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea. .,Department of Dermatology, Pusan National University Yangsan Hospital, Yangsan, Korea. .,Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
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Park SM, Ko HC, Kim BS, Kim MB, Mun JH. Large protruding telangiectatic nodule on the nose. Clin Exp Dermatol 2014; 40:460-2. [PMID: 25476592 DOI: 10.1111/ced.12511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2014] [Indexed: 11/28/2022]
Affiliation(s)
- S M Park
- Department of Dermatology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - H C Ko
- Department of Dermatology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - B S Kim
- Department of Dermatology, Pusan National University Hospital, Busan, Republic of Korea
| | - M B Kim
- Department of Dermatology, Pusan National University Hospital, Busan, Republic of Korea
| | - J H Mun
- Department of Dermatology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
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Kim G, Morgan M, Hahm BK, Bhunia A, Mun JH, Om AS. Interdigitated microelectrode based impedance biosensor for detection of salmonella enteritidis in food samples. ACTA ACUST UNITED AC 2008. [DOI: 10.1088/1742-6596/100/5/052044] [Citation(s) in RCA: 8] [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: 11/12/2022]
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Chandran KB, Mun JH, Choi KK, Chen JS, Hamilton A, Nagaraj A, McPherson DD. A method for in-vivo analysis for regional arterial wall material property alterations with atherosclerosis: preliminary results. Med Eng Phys 2003; 25:289-98. [PMID: 12649013 DOI: 10.1016/s1350-4533(02)00224-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Atherosclerosis is a diffuse arterial disease developing over many years and resulting in a complicated three-dimensional arterial morphology. The arterial wall material properties have been demonstrated to show regional alterations with atheroma development and growth. We present a mechanical analysis of diseased arterial segments reconstructed from intravascular ultrasound images in order to quantitatively identify regional alterations in the elastic constants with atherosclerotic lesions. We employ a finite element and a displacement sensitivity analysis to divide the arterial segment into regions with different material properties and use an optimization algorithm to identify the elastic constants in these regions. The results with regional variations identified with this method correlated qualitatively with the extent and location of atherosclerotic lesions identified by visual inspection of the affected arteries. The optimized elastic modulus in regions affected by early atherosclerotic lesions ranged from 90.9 to 93.0 kPa where as the corresponding magnitudes in normal arterial segments ranged from 97.9 to 101.0 kPa. This method can be potentially employed to identify the extent and location of atherosclerotic lesions in a systematic analysis and may potentially be used for the early detection of lesion growth.
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Affiliation(s)
- K B Chandran
- Department of Biomedical Engineering, University of Iowa, 1402 SC, Iowa City, Iowa, USA
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Mun JH, Yu HJ, Lee HS, Kwon YM, Lee JS, Lee I, Kim SG. Two closely related cDNAs encoding actin-depolymerizing factors of petunia are mainly expressed in vegetative tissues. Gene 2000; 257:167-76. [PMID: 11080583 DOI: 10.1016/s0378-1119(00)00412-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Actin-depolymerizing factor (ADF) is one of the small actin-binding proteins that regulate actin dynamics in cells. We have isolated two cDNA clones, PhADF1 and PhADF2, encoding ADF from cDNA libraries constructed from petal protoplast cultures and flowers of Petunia hybrida. PhADF1 and PhADF2 encode polypeptides of 139 and 143 amino acids with a calculated molecular mass of 16.04 and 16.51kDa, respectively. Co-sedimentation assay showed that the recombinant PhADF1 protein produced in Escherichia coli binds to F-actin at pH7. 0 and preferentially depolymerizes it at pH8.0. Gene tree analysis indicates that the plant ADF family can be grouped into four classes, and PhADFs are included in class I. Southern blot analyses revealed that one or two copies of PhADF genes are present in petunia genome, and several other related isoforms also exist. Northern blot analyses indicated that PhADF1 and PhADF2 are closely related and abundantly expressed in every plant organ except pollen. In addition, they are highly accumulated in mature vegetative tissue (petal, leaf, and stem). Our results indicate that the transcription of petunia ADF genes is differentially regulated by developmental signals.
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MESH Headings
- Actin Depolymerizing Factors
- Amino Acid Sequence
- Blotting, Northern
- Blotting, Southern
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- DNA, Plant/genetics
- Destrin
- Gene Dosage
- Gene Expression Regulation, Plant
- Microfilament Proteins/genetics
- Molecular Sequence Data
- Phylogeny
- Plant Proteins/genetics
- Protein Isoforms/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Plant/genetics
- RNA, Plant/metabolism
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Solanaceae/cytology
- Solanaceae/genetics
- Tissue Distribution
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Affiliation(s)
- J H Mun
- School of Biological Sciences Seoul National University, Seoul 151-742, South Korea
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Yu HJ, Moon MS, Lee HS, Mun JH, Kwon YM, Kim SG. Analysis of cDNAs expressed during first cell division of petunia petal protoplast cultures using expressed sequence tags. Mol Cells 1999; 9:258-64. [PMID: 10420983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
A large-scale sequence analysis of randomly selected cDNA clones was performed to isolate numerous genes in petunia petal protoplast cultures. We have partially sequenced 1158 randomly selected genes of the cDNA library constructed from 2-6 d cultured petal protoplasts. Three hundred and sixty-five different genes were identified, 25% of which showed significant similarity to existing sequences in the petunia, and an array of other organisms. In this report, 90 independent genes are analyzed in detail. A functional categorization of the database-matched expressed sequence tags (ESTs) showed that defense- or stress-related genes, as well as genes involved in the primary metabolic pathways and in the transcriptional or translational apparatus are abundantly represented. In particular, ESTs were identified with apparent homologies to the cyclin-dependent kinase, histone, actin-depolymerizing factor, proteasome, and ubiquitin which are expected to be related to cell division or to cell cycle control.
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Affiliation(s)
- H J Yu
- Department of Biology and Research Center for Cell Differentiation, Seoul National University, Korea
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Lee HS, Mun JH, Kim SG. Characterization of cDNAs encoding cytoplasmic ribosomal protein L15 and L27a in petunia (Petunia hybrida): primary structures and coordinate expression. Gene 1999; 226:155-63. [PMID: 9931480 DOI: 10.1016/s0378-1119(98)00582-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We have isolated two cDNA clones, PhRL15 and PhRL27a, encoding cytoplasmic ribosomal proteins L15 and L27a, from a cDNA library prepared from petunia petal protoplast cultures. An expressed sequence tag (EST) strategy was employed. PhRL15 and PhRL27a contained open reading frames corresponding to proteins of 204 and 150 amino acids and molecular weights of 24,100 and 17,000Da, respectively. The deduced amino acid sequences of these clones are about 60% to 70%, identical with those of yeast and rat. Southern blot analysis indicates that each gene may be encoded by a small multigene. The transcription levels of both clones were high in young vegetative organs, at the early event of floral development, and in dividing petal protoplast, and relatively low in highly differentiated reproductive organs. Our results demonstrate that the expression levels of both clones are correlated with the rate of growth and coordinatively controlled in petunia plant.
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Affiliation(s)
- H S Lee
- Department of Biology and Research Center for Cell Differentiation, Seoul National University, Seoul 151-742, South Korea
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