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Chen JY, Wang T, Wang PH, Sun YY, Xue N, Xu CJ, Shi RJ. [Study on static parameters of internal nasal valve in 3-dimensional model of nasal cavity space]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:206-211. [PMID: 36878498 DOI: 10.3760/cma.j.cn115330-20220618-00357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Objective: To identify the internal nasal valve (INV) and to evaluate its key parameters in the established 3D models of nasal cavity space via Mimics from CT images, in order to provide evidence for quantitative diagnosis of nasal valve compromise. Methods: A total of 32 Han adults without nasal diseases who underwent maxillofacial CT test in Shanghai Ninth People's Hospital from January 2015 to December 2018 were retrospectively recruited, including 16 males and 16 females, with the age ranged from 20 to 80 years (50% age<50 years old). Maxillofacial CT images were used to create 3D model of nasal cavity space. The INV was identified and the following parameters were measured: the angle between the INV and the nasal bone (θINV-B), unilateral cross-sectional area of the INV (AINV-R, AINV-L), total cross-sectional area of the INV (AINV), unilateral height of the INV (HINV-R, HINV-L), unilateral nasal valve angle (αINV-R, αINV-L), and the sum of nasal valve angle (αINV). The AINV in our study was compared with the results of the previously adopted planes (PlaneC, perpendicular to the hard palate and PlaneB, plane perpendicular to the nasal bone). The parameters above were compared among genders, age and race groups. SPSS 26 and GraphPad Prism 9 software were used for statistical analysis and mapping of data. Results: The AINV in our study was (214.87±52.94) mm², which was significantly less than that of PlaneC (254.97±47.80) mm² and PlaneB (226.07±57.36) mm². The measured parameters were as follows: θINV-B was (82.07±7.06)°; AINV-R was (112.66±31.39) mm²; AINV-L was (102.21±27.14) mm²; AINV was (214.87±52.94) mm²; HINV-R was (24.87±4.62) mm; HINV-L was (24.35±4.86) mm; αINV-R was (20.48±2.99)°; αINV-L was (19.65±3.82)°; αINV was (40.13±6.24)°. The AINV-R was larger than AINV-L (t=2.33, P<0.05); The HINV, AINV-R, AINV-L and AINV of males were more than those of females (t value was 5.77, 3.21, 2.91 and 3.52, respectively, all P<0.01). The AINV of the young group (<50 years) was larger than that of the old group (t=2.83, P<0.01); The θINV-B was different between the Han people and the Caucasian (t=2.92,P<0.01). The αINV of the Han people was larger than that of Caucasians (Z=-6.92, P<0.01), but the HINV was smaller (Z=-3.89, P<0.01). Conclusion: The AINV carried out in 3D models of nasal cavity space is significantly smaller than that obtained by the previous methods of CT evaluation. INV static parameters differ among genders, age and race groups.
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Affiliation(s)
- J Y Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
| | - T Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
| | - P H Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
| | - Y Y Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
| | - N Xue
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
| | - C J Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
| | - R J Shi
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China
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Yuan ML, Bai J, Li CY, Xue N, Chen XH, Sheng F, Liu XZ, Li P. [SENP1 induced protein deSUMO modification increased the chemotherapy sensitivity of endometrial cancer side population cells]. Zhonghua Zhong Liu Za Zhi 2022; 44:1362-1368. [PMID: 36575788 DOI: 10.3760/cma.j.cn112152-20201108-00968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: To inhibit the stemness maintenance potential of endometrial cancer and increase the sensitivity of endometrial cancer side population cells to chemotherapy drugs by inducing extensive deSUMOylation modification of proteins. Methods: Flow cytometry was used to sort and culture CD133(+) CD44(+) KLE endometrial cancer cell clone spheres. Protein expression level of small ubiquitin-related modifier 1 (SUMO1) and two stemness maintenance genes of tumor side population cells, octamer binding transcription factor-4 (Oct4) and sex determining region Y-box2 (Sox2), were detected by western blotting method. Lentivirus-mediated Sentrin/SUMO-specific proteases 1 (SENP1) gene was stably transfected into KLE side population cells. Western blotting was used to detect the protein expressions of SENP1, SUMO1, Oct4 and Sox2. The clone formation rate was compared between KLE side population cells with or without SENP1 overexpression. Flow cytometry was applied to detect cell cycle changes. 3-(4, 5-Dimethylthiazole-2)-2, 5-diphenyl-tetrazolium bromide (MTT) experiment and flow cytometry apoptosis method were used to detect the chemosensitivity of the side population of endometrial cancer cells to cisplatin. Tumor-bearing mouse models of endometrial cancer were established to detect the effect of SENP1 overexpression on the chemotherapy sensitivity of cisplatin. Results: Compared with CD133(-)CD44(-) KLE cells, CD133(+) CD44(+) KLE side population cells could form clonal spheres and express higher levels of SUMO1, Oct4 and Sox2 proteins (P<0.05). Compared with KLE side population cells that were not transfected with SENP1 gene, the expression level of SENP1 protein in KLE side population cells overexpressing SUMO1、Oct4 and Sox2 were lower. The clonal sphere formation rate was reduced from (25.67±5.44)% to (7.46±1.42)%, and cell cycle shifted from G(0)/G(1) phase to G(2) phase. IC(50) of cisplatin decreased from (55.46±6.14) μg/ml to (11.55±3.12) μg/ml, and cell apoptosis rate increased from (9.76±2.09)% to (16.79±3.44)%. Overexpression of SENP1 could reduce the tumorigenesis rate of KLE side population cells in vivo and increase their chemotherapy sensitivity to cisplatin (P<0.05). Conclusion: Overexpression of SENP1 can induce protein deSUMOylation modification, inhibit the stemness maintenance potential of endometrial cancer side population cells, and enhance their chemotherapy sensitivity, which provides a new reference for gene therapy of endometrial cancer.
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Affiliation(s)
- M L Yuan
- Department of Obstetrics and Gynecology, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - J Bai
- Department of Obstetrics and Gynecology, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
| | - C Y Li
- Department of Obstetrics and Gynecology, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
| | - N Xue
- Tianjin Key Laboratory of Epigenetics in Organ Development of Premature Infants, Tianjin 300450, China
| | - X H Chen
- Department of Obstetrics and Gynecology, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - F Sheng
- Department of Traditional Chinese Medicine, Tianjin Fifth Central Hospital, Tianjin 300450, China
| | - X Z Liu
- Tianjin Key Laboratory of Epigenetics in Organ Development of Premature Infants, Tianjin 300450, China
| | - P Li
- Department of Obstetrics and Gynecology, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300052, China
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Xue N, Wang Y, Li X, Bai Y. Enzymatic synthesis, structure of isomalto/malto-polysaccharides from linear dextrins prepared by retrogradation. Carbohydr Polym 2022; 288:119350. [PMID: 35450622 DOI: 10.1016/j.carbpol.2022.119350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 11/30/2022]
Abstract
Isomalto/malto-polysaccharides (IMMPs) with degree of polymerization (DP) 10-100 have novel potential applications, including enhanced solubility and anti-inflammatory. However, there are minimal synthetic methods for preparing IMMPs with a relatively higher DP, which is due to the lack of suitable molecular weight linear dextrins (I-LDs). The existing I-LDs preparation methods have disadvantages, such as low yield and uncontrollable molecular weight. Therefore, this study proposes a method for preparing soluble linear dextrins (S-LDs, Mw = 2.1 kDa) by low-temperature retrogradation from debranched waxy corn starch (Mw = 3.0 kDa). S-LDs reacted with 4,6-α-glucanotransferase GtfB-ΔN from Limosilactobacillus reuteri 121 to yield IMMPs with 12.3 kDa Mw and 83.8% α1 → 6 linkages content. Process monitoring revealed the synthesis mechanism and a detailed reaction process. Finally, IMMPs were identified by enzyme fingerprinting as α1 → 6 chains with α1 → 4 fragments inlaid at the reducing, non-reducing end, and middle part. This study provides a new synthesis method and more structural information for IMMPs.
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Affiliation(s)
- Naixiang Xue
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yanli Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaoxiao Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yuxiang Bai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Xue N, Svensson B, Bai Y. Structure, function and enzymatic synthesis of glucosaccharides assembled mainly by α1 → 6 linkages - A review. Carbohydr Polym 2022; 275:118705. [PMID: 34742430 DOI: 10.1016/j.carbpol.2021.118705] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 11/02/2022]
Abstract
A variety of glucosaccharides composed of glucosyl residues can be classified into α- and β-type and have wide application in food and medicine areas. Among these glucosaccharides, β-type, such as cellulose and α-type, such as starch and starch derivatives, both contain 1 → 4 linkages and are well studied. Notably, in past decades also α1 → 6 glucosaccharides obtained increasing attention for unique physiochemical and biological properties. Especially in recent years, α1 → 6 glucosaccharides of different molecular weight distribution have been created and proved to be functional. However, compared to β- type and α1 → 4 glucosaccharides, only few articles provide a systematic overview of α1 → 6 glucosaccharides. This motivated, the present first comprehensive review on structure, function and synthesis of these α1 → 6 glucosaccharides, aiming both at improving understanding of traditional α1 → 6 glucosaccharides, such as isomaltose, isomaltooligosaccharides and dextrans, and to draw the attention to newly explored α1 → 6 glucosaccharides and their derivatives, such as cycloisomaltooligosaccharides, isomaltomegalosaccharides, and isomalto/malto-polysaccharides.
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Affiliation(s)
- Naixiang Xue
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Birte Svensson
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China; Department of Biotechnology and Biomedicine, Enzyme and Protein Chemistry, Technical University of Denmark, Denmark
| | - Yuxiang Bai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Xue N, Lei XF, Xu JJ, Wei XX. [Progression of endoscopic retrograde cholangiopancreatography in children with pancreaticobiliary diseases]. Zhonghua Er Ke Za Zhi 2021; 59:145-149. [PMID: 33548965 DOI: 10.3760/cma.j.cn112140-20200618-00633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- N Xue
- Department of Gastroenterology, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - X F Lei
- Department of Special Examination, Jinan Shizhong People's Hospital, Jinan 250001, China Corresponding authour: Wei Xuxia,
| | - J J Xu
- Department of Gastroenterology, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - X X Wei
- Department of Gastroenterology, Qilu Children's Hospital of Shandong University, Jinan 250022, China
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Gu XX, Xue N, Ning Q, Sun YD, Wang Y. [A case of chronic obstructive pulmonary disease caused by chronic inhalation of asphalt smoke]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 38:549-550. [PMID: 32746585 DOI: 10.3760/cma.j.cn121094-20190909-00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Jiang YX, Xue N, Li Z, Yan YJ. [A misdiagnosis case of kidney damage caused by mercury poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:544-545. [PMID: 32746582 DOI: 10.3760/cma.j.cn121094-20190927-00415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Xue N, Lei XF, Wei XX, Zhang L, Xu JJ. [Progression in endoscopic ultrasound in children's digestive diseases]. Zhonghua Er Ke Za Zhi 2019; 57:896-899. [PMID: 31665850 DOI: 10.3760/cma.j.issn.0578-1310.2019.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- N Xue
- Department of Gastroenterology, Jinan Children's Hospital, Jinan 250022, China
| | - X F Lei
- Department of Special Examination, Jinan Shizhong People's Hospital, Jinan 250001, China
| | - X X Wei
- Department of Gastroenterology, Jinan Children's Hospital, Jinan 250022, China
| | - L Zhang
- Department of Gastroenterology, Jinan Children's Hospital, Jinan 250022, China
| | - J J Xu
- Department of Gastroenterology, Jinan Children's Hospital, Jinan 250022, China
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Xue N, Li Z, Yan YJ. [A case report on multiple organ dysfunction syndrome caused by acute carbon tetrachloride poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:63-65. [PMID: 30884594 DOI: 10.3760/cma.j.issn.1001-9391.2019.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Occupational acute carbon tetrachloride poisoning occurs when a worker is exposed to highly condensed carbon tetrachloride in a short time and suffers from diseases damaging mainly his neutral system and (or) liver and kidney. This article reports a case of what clinical symptoms MODS patients show and how to diagnose, differential diagnosis and therapy process.
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Affiliation(s)
- N Xue
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China;Shandong Provincial Hospital of Occupational Disease, Jinan 250062, China;Jinan Hospital, Jinan 250062, China
| | - Z Li
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China;Shandong Provincial Hospital of Occupational Disease, Jinan 250062, China
| | - Y J Yan
- Shandong Provincial Hospital of Occupational Disease, Jinan 250062, China
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Landau E, Pinn D, Xue N, Wang D, Bodner W, Hong L, Mah D, Miller E, Garg M, Kalnicki S. The Factors Affecting Treatment Outcomes of a Single Institution's Experience with Locally Advanced NSCLC Treated with PET guided IMRT. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Zhang K, Yuan Z, Li L, Shi X, Cao L, Du Y, Xue N. Separation of the Two Enantiomers of Naproxcinod by Chiral Normal-Phase Liquid Chromatography. J Chromatogr Sci 2011; 49:272-5. [DOI: 10.1093/chrsci/49.4.272] [Citation(s) in RCA: 7] [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: 11/14/2022]
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Xue N, Yang R, Xu X, Seip HM, Zeng Q, Zang Q. Adsorption and degradation of benfuracarb in three soils in Hunan, People's Republic of China. Bull Environ Contam Toxicol 2006; 76:720-7. [PMID: 16688558 DOI: 10.1007/s00128-006-0979-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2005] [Accepted: 02/07/2006] [Indexed: 05/09/2023]
Affiliation(s)
- N Xue
- Department of Environmental Sciences and Engineering, Hunan Agricultural University, Changsha, People's Republic of China
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Su WC, Kitagawa M, Xue N, Xie B, Garofalo S, Cho J, Deng C, Horton WA, Fu XY. Activation of Stat1 by mutant fibroblast growth-factor receptor in thanatophoric dysplasia type II dwarfism. Nature 1997; 386:288-92. [PMID: 9069288 DOI: 10.1038/386288a0] [Citation(s) in RCA: 255] [Impact Index Per Article: 9.4] [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: 02/03/2023]
Abstract
The achondroplasia class of chondrodysplasias comprises the most common genetic forms of dwarfism in humans and includes achondroplasia, hypochondroplasia and thanatophoric dysplasia types I and II (TDI and TDII), which are caused by different mutations in a fibroblast growth-factor receptor FGFR3 (ref. 1). The molecular mechanism and the mediators of these FGFR3-related growth abnormalities are not known. Here we show that mutant TDII FGFR3 has a constitutive tyrosine kinase activity which can specifically activate the transcription factor Stat1 (for signal transducer and activator of transcription). Furthermore, expression of TDII FGFR3 induced nuclear translocation of Stat1, expression of the cell-cycle inhibitor p21(WAF1/CIP1), and growth arrest of the cell. Thus, TDII FGFR3 may use Stat1 as a mediator of growth retardation in bone development. Consistent with this, Stat1 activation and increased p21(WAF1/CIP1) expression was found in the cartilage cells from the TDII fetus, but not in those from the normal fetus. Thus, abnormal STAT activation and p21(WAF1/CIP1) expression by the TDII mutant receptor may be responsible for this FGFR3-related bone disease.
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Affiliation(s)
- W C Su
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut 06520-8023, USA
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Henry JG, Xue N, Kinder BK, Inzucchi SE. A 73-year-old man with hyperglycemia, skin rashes, anemia and weight loss. J Clin Endocrinol Metab 1996; 81:2428-33. [PMID: 8675556 DOI: 10.1210/jcem.81.7.8675556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- J G Henry
- Section of Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06520, USA
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Ballinger DG, Xue N, Harshman KD. A Drosophila photoreceptor cell-specific protein, calphotin, binds calcium and contains a leucine zipper. Proc Natl Acad Sci U S A 1993; 90:1536-40. [PMID: 8434015 PMCID: PMC45909 DOI: 10.1073/pnas.90.4.1536] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [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: 01/30/2023] Open
Abstract
The calphotin protein, encoded by the calphotin (cap) gene, is expressed in the soma and axons of all Drosophila photoreceptor cells. It is expressed early in photo-receptor cell development, at the time when cell-type decisions are being made. Expression of calphotin is not altered by the glass mutation, which blocks photoreceptor cell development. The calphotin protein binds calcium and contains a long C-terminal leucine zipper. Potential implications of these properties are discussed.
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Affiliation(s)
- D G Ballinger
- Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY
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