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Chen X, Fan Y, Guo Y, Li S, Zhang B, Li H, Liu LJ. Blue light photoreceptor cryptochrome 1 promotes wood formation and anthocyanin biosynthesis in Populus. Plant Cell Environ 2024; 47:2044-2057. [PMID: 38392920 DOI: 10.1111/pce.14866] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 01/26/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Blue light photoreceptor cryptochrome 1 (CRY1) in herbaceous plants plays crucial roles in various developmental processes, including cotyledon expansion, hypocotyl elongation and anthocyanin biosynthesis. However, the function of CRY1 in perennial trees is unclear. In this study, we identified two ortholog genes of CRY1 (PagCRY1a and PagCRY1b) from Populus, which displayed high sequence similarity to Arabidopsis CRY1. Overexpression of PagCRY1 substantially inhibited plant growth and promoted secondary xylem development in Populus, while CRISPR/Cas9-mediated knockout of PagCRY1 enhanced plant growth and delayed secondary xylem development. Moreover, overexpression of PagCRY1 dramatically increased anthocyanin accumulation. The further analysis supported that PagCRY1 functions specifically in response to blue light. Taken together, our results demonstrated that modulating the expression of blue light photoreceptor CRY1 ortholog gene in Populus could significantly influence plant biomass production and the process of wood formation, laying a foundation for further investigating the light-regulated tree growth.
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Affiliation(s)
- Xiaoman Chen
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
| | - Yiting Fan
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
| | - Ying Guo
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
| | - Shuyi Li
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
| | - Bo Zhang
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
| | - Hao Li
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
| | - Li-Jun Liu
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Taian, Shandong, China
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2
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Ma J, Chen S, Liu J, Liao Y, Li L, Wang CC, Song S, Feng R, Hu H, Quan S. Cryptochrome 1 regulates ovarian granulosa cell senescence through NCOA4-mediated ferritinophagy. Free Radic Biol Med 2024; 217:1-14. [PMID: 38522484 DOI: 10.1016/j.freeradbiomed.2024.03.015] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 03/26/2024]
Abstract
Age-associated decreases in follicle number and oocyte quality result in a decline in female fertility, which is associated with increased infertility. Granulosa cells play a major role in oocyte development and maturation both in vivo and in vitro. However, it is unclear whether a reduction in cryptochrome 1 (Cry1) expression contributes to granulosa cell senescence, and further exploration is needed to understand the underlying mechanisms. In this study, we investigated the role of Cry1, a core component of the molecular circadian clock, in the regulation of senescence in ovarian granulosa cells. Western blotting and qRT-PCR showed that Cry1 expression was downregulated in aged human ovarian granulosa cells and was correlated with age and anti-Müllerian hormone (AMH) levels. RNA-seq analysis suggested that ferritinophagy was increased after Cry1 knockdown in KGN cells. MDA, iron, and reactive oxygen species (ROS) assays were used to detect cellular ferritinophagy levels. Ferroptosis inhibitors, iron chelators, autophagy inhibitors, and nuclear receptor coactivator 4 (NCOA4) knockdown alleviated KGN cell senescence induced by Cry1 knockdown. Immunofluorescence, immunoprecipitation, and ubiquitination assays indicated that Cry1 affected NCOA4 ubiquitination and degradation through HERC2, thereby affecting NCOA4-mediated ferritinophagy and causing granulosa cell senescence. KL201, a Cry1 stabilizer, enhanced ovarian function in naturally aged mice by reducing ferritinophagy. Our study reveals the potential mechanisms of action of Cry1 during ovarian aging and provides new insights for the clinical treatment of age-related fertility decline.
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Affiliation(s)
- Jing Ma
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Sixing Chen
- Center for Reproductive Medicine, Foshan Women and Children Hospital, Foshan, Guangdong, China
| | - Jing Liu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yixin Liao
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lina Li
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, Faculty of Medicine, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Sishi Song
- School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Rixuan Feng
- School of Nursing, Southern Medical University, Guangzhou, Guangdong, China
| | - Haoyue Hu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China.
| | - Song Quan
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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Saft M, Schneider L, Ho CC, Maiterth E, Menke J, Sendker F, Steinchen W, Essen LO. One More for Light-triggered Conformational Changes in Cryptochromes: CryP from Phaeodactylum tricornutum. J Mol Biol 2024; 436:168408. [PMID: 38123123 DOI: 10.1016/j.jmb.2023.168408] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Cryptochromes are a ubiquitously occurring class of photoreceptors. Together with photolyases, they form the Photolyase Cryptochrome Superfamily (PCSf) by sharing a common protein architecture and binding mode of the FAD chromophore. Despite these similarities, PCSf members exert different functions. Photolyases repair UV-induced DNA damage by photocatalytically driven electron transfer between FADH¯ and the DNA lesion, whereas cryptochromes are light-dependent signaling molecules and trigger various biological processes by photoconversion of their FAD redox and charge states. Given that most cryptochromes possess a C-terminal extension (CTE) of varying length, the functions of their CTE have not yet been fully elucidated and are hence highly debated. In this study, the role of the CTE was investigated for a novel subclass of the PCSf, the CryP-like cryptochromes, by hydrogen/deuterium exchange and mass-spectrometric analysis. Striking differences in the relative deuterium uptake were observed in different redox states of CryP from the diatom Phaeodactylum tricornutum. Based on these measurements we propose a model for light-triggered conformational changes in CryP-like cryptochromes that differs from other known cryptochrome families like the insect or plant cryptochromes.
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Affiliation(s)
- Martin Saft
- Department of Chemistry, Philipps University Marburg, 35032 Marburg, Germany
| | - Leonie Schneider
- Department of Chemistry, Philipps University Marburg, 35032 Marburg, Germany
| | - Chun-Chih Ho
- Department of Chemistry, Philipps University Marburg, 35032 Marburg, Germany
| | - Elias Maiterth
- Department of Chemistry, Philipps University Marburg, 35032 Marburg, Germany
| | - Josephine Menke
- Department of Chemistry, Philipps University Marburg, 35032 Marburg, Germany
| | - Franziska Sendker
- Evolutionary Biochemistry Group, Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany
| | - Wieland Steinchen
- Center of Synthetic Microbiology (SYNMIKRO), Philipps University Marburg, 35032 Marburg, Germany
| | - Lars-Oliver Essen
- Department of Chemistry, Philipps University Marburg, 35032 Marburg, Germany.
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Rredhi A, Petersen J, Wagner V, Vuong T, Li W, Li W, Schrader L, Mittag M. The UV-A Receptor CRY-DASH1 Up- and Downregulates Proteins Involved in Different Plastidial Pathways. J Mol Biol 2024; 436:168271. [PMID: 37699454 DOI: 10.1016/j.jmb.2023.168271] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/18/2023] [Accepted: 09/06/2023] [Indexed: 09/14/2023]
Abstract
Algae encode up to five different types of cryptochrome photoreceptors. So far, relatively little is known about the biological functions of the DASH (Drosophila, Arabidopsis, Synechocystis and Homo)-type cryptochromes. The green alga Chlamydomonas reinhardtii encodes two of them. CRY-DASH1 also called DCRY1 has its maximal absorption peak in the UV-A range. It is localized in the chloroplast and plays an important role in balancing the photosynthetic machinery. Here, we performed a comparative analysis of chloroplast proteins from wild type and a knockout mutant of CRY-DASH1 named cry-dash1mut, using label-free quantitative proteomics as well as immunoblotting. Our results show upregulation of enzymes involved in specific pathways in the mutant including key enzymes of chlorophyll and carotenoid biosynthesis consistent with increased levels of photosynthetic pigments in cry-dash1mut. There is also an increase in certain redox as well as photosystem I and II proteins, including D1. Strikingly, CRY-DASH1 is coregulated in a D1 deletion mutant, where its amount is increased. In contrast, key proteins of the central carbon metabolism, including glycolysis/gluconeogenesis, dark fermentation and the oxidative pentose phosphate pathway are downregulated in cry-dash1mut. Similarly, enzymes of histidine biosynthesis are downregulated in cry-dash1mut leading to a reduction in the amount of free histidine. Yet, transcripts encoding for several of these proteins are at a similar level in the wild type and cry-dash1mut or even opposite. We show that CRY-DASH1 can bind to RNA, taking the psbA RNA encoding D1 as target. These data suggest that CRY-DASH1 regulates plastidial metabolic pathways at the posttranscriptional level.
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Affiliation(s)
- Anxhela Rredhi
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Jan Petersen
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany. https://twitter.com/1anPetersen
| | - Volker Wagner
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Trang Vuong
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany. https://twitter.com/trangha593
| | - Wenshuang Li
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Wei Li
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Laura Schrader
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Maria Mittag
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany.
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Yang Y, Wu G, Sancar A, Hogenesch JB. Mutations of the circadian clock genes Cry, Per, or Bmal1 have different effects on the transcribed and nontranscribed strands of cycling genes. Proc Natl Acad Sci U S A 2024; 121:e2316731121. [PMID: 38359290 PMCID: PMC10895256 DOI: 10.1073/pnas.2316731121] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/08/2024] [Indexed: 02/17/2024] Open
Abstract
One important goal of circadian medicine is to apply time-of-day dosing to improve the efficacy of chemotherapy. However, limited knowledge of how the circadian clock regulates DNA repair presents a challenge to mechanism-based clinical application. We studied time-series genome-wide nucleotide excision repair in liver and kidney of wild type and three different clock mutant genotypes (Cry1-/-Cry2-/-, Per1-/-Per2-/-, and Bmal1-/-). Rhythmic repair on the nontranscribed strand was lost in all three clock mutants. Conversely, rhythmic repair of hundreds of genes on the transcribed strand (TSs) persisted in the livers of Cry1-/-Cry2-/- and Per1-/-Per2-/- mice. We identified a tissue-specific, promoter element-driven repair mode on TSs of collagen and angiogenesis genes in the absence of clock activators or repressors. Furthermore, repair on TSs of thousands of genes was altered when the circadian clock is disrupted. These data contribute to a better understanding of the regulatory role of the circadian clock on nucleotide excision repair in mammals and may be invaluable toward the design of time-aware platinum-based interventions in cancer.
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Affiliation(s)
- Yanyan Yang
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Gang Wu
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Aziz Sancar
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - John B Hogenesch
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
- Divisions of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229
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Tsurudome Y, Yoshida Y, Hamamura K, Ogino T, Yasukochi S, Yasuo S, Iwamoto A, Yoshihara T, Inazumi T, Tsuchiya S, Takeo T, Nakagata N, Higuchi S, Sugimoto Y, Tsuruta A, Koyanagi S, Matsunaga N, Ohdo S. Prostaglandin F2α Affects the Cycle of Clock Gene Expression and Mouse Behavior. Int J Mol Sci 2024; 25:1841. [PMID: 38339119 PMCID: PMC10855224 DOI: 10.3390/ijms25031841] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/26/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Prostaglandins are bioactive compounds, and the activation of their receptors affects the expression of clock genes. However, the prostaglandin F receptor (Ptgfr) has no known relationship with biological rhythms. Here, we first measured the locomotor period lengths of Ptgfr-KO (B6.129-Ptgfrtm1Sna) mice and found that they were longer under constant dark conditions (DD) than those of wild-type (C57BL/6J) mice. We then investigated the clock gene patterns within the suprachiasmatic nucleus in Ptgfr-KO mice under DD and observed a decrease in the expression of the clock gene cryptochrome 1 (Cry1), which is related to the circadian cycle. Moreover, the expression of Cry1, Cry2, and Period2 (Per2) mRNA were significantly altered in the mouse liver in Ptgfr-KO mice under DD. In the wild-type mouse, the plasma prostaglandin F2α (PGF2α) levels showed a circadian rhythm under a 12 h cycle of light-dark conditions. In addition, in vitro experiments showed that the addition of PTGFR agonists altered the amplitude of Per2::luc activity, and this alteration differed with the timing of the agonist addition. These results lead us to hypothesize that the plasma rhythm of PGF2α is important for driving clock genes, thus suggesting the involvement of PGF2α- and Ptgfr-targeting drugs in the biological clock cycle.
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Affiliation(s)
- Yuya Tsurudome
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.T.); (T.O.); (S.Y.); (S.K.)
| | - Yuya Yoshida
- Department of Clinical Pharmacokinetics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.Y.); (K.H.)
| | - Kengo Hamamura
- Department of Clinical Pharmacokinetics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.Y.); (K.H.)
| | - Takashi Ogino
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.T.); (T.O.); (S.Y.); (S.K.)
| | - Sai Yasukochi
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.T.); (T.O.); (S.Y.); (S.K.)
| | - Shinobu Yasuo
- Regulation in Metabolism and Behavior, Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; (S.Y.)
| | - Ayaka Iwamoto
- Regulation in Metabolism and Behavior, Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; (S.Y.)
| | - Tatsuya Yoshihara
- SOUSEIKAI Fukuoka Mirai Hospital Clinical Research Center, 3-5-1 Kashiiteriha, Higashi-ku, Fukuoka 813-0017, Japan;
| | - Tomoaki Inazumi
- Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan; (T.I.); (S.T.); (Y.S.)
| | - Soken Tsuchiya
- Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan; (T.I.); (S.T.); (Y.S.)
| | - Toru Takeo
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan;
| | - Naomi Nakagata
- Division of Reproductive Biotechnology and Innovation, Center for Animal Resources and Development (CARD), Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan;
| | - Shigekazu Higuchi
- Department of Human Life Design and Science, Faculty of Design, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan;
| | - Yukihiko Sugimoto
- Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan; (T.I.); (S.T.); (Y.S.)
| | - Akito Tsuruta
- Department of Glocal Healthcare Science, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan;
| | - Satoru Koyanagi
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.T.); (T.O.); (S.Y.); (S.K.)
- Department of Glocal Healthcare Science, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan;
| | - Naoya Matsunaga
- Department of Clinical Pharmacokinetics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.Y.); (K.H.)
| | - Shigehiro Ohdo
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (Y.T.); (T.O.); (S.Y.); (S.K.)
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7
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Lv S, Huang Y, Ma Y, Teng J. Antidepressant mechanism of traditional Chinese medicine: Involving regulation of circadian clock genes. Medicine (Baltimore) 2024; 103:e36266. [PMID: 38306565 PMCID: PMC10843535 DOI: 10.1097/md.0000000000036266] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/01/2023] [Indexed: 02/04/2024] Open
Abstract
Numerous studies have demonstrated an intimate relationship between circadian rhythm disorders and the development and prevention of depression. The biological clock genes, which constitute the molecular basis of endogenous circadian rhythms, hold promising prospects for depression treatment. Based on an extensive review of recent domestic and international research, this article presents a comprehensive analysis of how traditional Chinese medicine (TCM) intervenes in depression by regulating circadian rhythms. The findings indicate that TCM exerts its antidepressant effects by targeting specific biological clock genes such as Bmal1, clock, Arntl, Per1, Per2, Per3, Nr1d1, Cry2, and Dbp, as well as regulating circadian rhythms of hormone secretion. However, most current research is still confined to basic experimental studies, lacking clinical double-blind control trials to further validate these viewpoints. Furthermore, there is insufficient research on the signal transduction pathway between biological clock genes and pathological changes in depression. Additionally, further clarification is needed regarding the specific targets of TCM on the biological clock genes.
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Affiliation(s)
- Shimeng Lv
- Department of First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yufei Huang
- Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuexiang Ma
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jing Teng
- Department of First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
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8
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Wei Q, Feng ZL, Cai YD, He JC, Lai FX, Wan PJ, Wang WX, Yao Q, Chiu JC, Fu Q. Characterization of light-dependent rhythm of courtship vibrational signals in Nilaparvata lugens: essential involvement of cryptochrome genes. Pest Manag Sci 2024; 80:508-517. [PMID: 37735824 DOI: 10.1002/ps.7782] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/14/2023] [Accepted: 09/22/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Vibrational signal plays a crucial role in courtship communication in many insects. However, it remains unclear whether insect vibrational signals exhibit daily rhythmicity in response to changes in environmental cues. RESULTS In this study, we observed daily rhythms of both female vibrational signals (FVS) and male vibrational signals (MVS) in the brown planthopper (BPH), Nilaparvata lugens (Stål), one of the most notorious rice pests across Asia. Notably, oscillations of FVS and MVS in paired BPHs were synchronized as part of male-female duetting interactions, displaying significant day-night rhythmicity. Furthermore, we observed light dependency of FVS emissions under different photoperiodic regimes (18 L:6 D and 6 L:18 D) and illumination intensity levels (>300 lx, 50 lx, and 25 lx). Subsequently, the potential role of circadian clock genes cryptochromes (Nlcry1 and Nlcry2) in regulating FVS daily oscillations was examined using gene knockdown via RNA interference. We observed sharp declines and disrupted rhythms in FVS frequencies when either of the Nlcrys was downregulated, with Nlcry2 knockdown showing a more prominent effect. Moreover, we recorded a novel FVS variant (with a dominant frequency of 361.76 ± 4.31 Hz) emitted by dsNlcry1-treated BPH females, which significantly diminished the impact of courtship stimuli on receptive males. CONCLUSION We observed light-dependent daily rhythms of substrate-borne vibrational signals (SBVS) in BPH and demonstrated essential yet distinct roles of the two Nlcrys. These findings enhanced our understanding of insect SBVS and illustrated the potential of novel precision physical control strategies for disrupting mating behaviors in this rice pest. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Qi Wei
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China
| | - Ze-Lin Feng
- School of Information Science and Technology, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yao D Cai
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, California, USA
| | - Jia-Chun He
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China
| | - Feng-Xiang Lai
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China
| | - Pin-Jun Wan
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China
| | - Wei-Xia Wang
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China
| | - Qing Yao
- School of Information Science and Technology, Zhejiang Sci-Tech University, Hangzhou, China
| | - Joanna C Chiu
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, California, USA
| | - Qiang Fu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, China
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9
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Chen S, Fan X, Song M, Yao S, Liu T, Ding W, Liu L, Zhang M, Zhan W, Yan L, Sun G, Li H, Wang L, Zhang K, Jia X, Yang Q, Yang J. Cryptochrome 1b represses gibberellin signaling to enhance lodging resistance in maize. Plant Physiol 2024; 194:902-917. [PMID: 37934825 DOI: 10.1093/plphys/kiad546] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 09/16/2023] [Indexed: 11/09/2023]
Abstract
Maize (Zea mays L.) is one of the most important crops worldwide. Photoperiod, light quality, and light intensity in the environment can affect the growth, development, yield, and quality of maize. In Arabidopsis (Arabidopsis thaliana), cryptochromes are blue-light receptors that mediate the photocontrol of stem elongation, leaf expansion, shade tolerance, and photoperiodic flowering. However, the function of maize cryptochrome ZmCRY in maize architecture and photomorphogenic development remains largely elusive. The ZmCRY1b transgene product can activate the light signaling pathway in Arabidopsis and complement the etiolation phenotype of the cry1-304 mutant. Our findings show that the loss-of-function mutant of ZmCRY1b in maize exhibits more etiolation phenotypes under low blue light and appears slender in the field compared with wild-type plants. Under blue and white light, overexpression of ZmCRY1b in maize substantially inhibits seedling etiolation and shade response by enhancing protein accumulation of the bZIP transcription factors ELONGATED HYPOCOTYL 5 (ZmHY5) and ELONGATED HYPOCOTYL 5-LIKE (ZmHY5L), which directly upregulate the expression of genes encoding gibberellin (GA) 2-oxidase to deactivate GA and repress plant height. More interestingly, ZmCRY1b enhances lodging resistance by reducing plant and ear heights and promoting root growth in both inbred lines and hybrids. In conclusion, ZmCRY1b contributes blue-light signaling upon seedling de-etiolation and integrates light signals with the GA metabolic pathway in maize, resulting in lodging resistance and providing information for improving maize varieties.
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Affiliation(s)
- Shizhan Chen
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Xiaocong Fan
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Meifang Song
- Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, China
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shuaitao Yao
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Tong Liu
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Wusi Ding
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Lei Liu
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Menglan Zhang
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Weimin Zhan
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Lei Yan
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guanghua Sun
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Hongdan Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lijian Wang
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Kang Zhang
- Department of Precision Plant Gene Delivery, Genovo Biotechnology Co. Ltd, Tianjin 301700, China
| | - Xiaolin Jia
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Qinghua Yang
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
| | - Jianping Yang
- College of Agronomy, State Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome Engineering, Longzi Lake Campus, Henan Agricultural University, Zhengzhou 450046, China
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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10
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Fyie LR, Westby KM, Meuti ME. Light pollution disrupts circadian clock gene expression in two mosquito vectors during their overwintering dormancy. Sci Rep 2024; 14:2398. [PMID: 38287057 PMCID: PMC10824765 DOI: 10.1038/s41598-024-52794-x] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/23/2024] [Indexed: 01/31/2024] Open
Abstract
Artificial light at night (ALAN) is an increasingly important form of environmental disturbance as it alters Light:Dark cycles that regulate daily and seasonal changes in physiology and phenology. The Northern house mosquito (Culex pipiens) and the tiger mosquito (Aedes albopictus) enter an overwintering dormancy known as diapause that is cued by short days. These two species differ in diapause strategy: Cx. pipiens diapause as adult females while Ae. albopictus enter a maternally-programmed, egg diapause. Previous studies found that ALAN inhibits diapause in both species, but the mechanism is unknown. As the circadian clock is implicated in the regulation of diapause in many insects, we examined whether exposure to ALAN altered the daily expression of core circadian cloc genes (cycle, Clock, period, timeless, cryptochrome 1, cryptochrome 2, and Par domain protein 1) in these two species when reared under short-day, diapause-inducing conditions. We found that exposure to ALAN altered the abundance of several clock genes in adult females of both species, but that clock gene rhythmicity was maintained for most genes. ALAN also had little effect on clock gene abundance in mature oocytes that were dissected from female Ae. albopictus that were reared under short day conditions. Our findings indicate that ALAN may inhibit diapause initiation through the circadian clock in two medically-important mosquitoes.
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Affiliation(s)
- Lydia R Fyie
- Department of Entomology, The Ohio State University, 2021 Coffey Rd, Columbus, OH, 43210, USA.
| | - Katie M Westby
- Tyson Research Center, Washington University in St. Louis, 6750 Tyson Valley Road, Eureka, MO, 63025, USA
| | - Megan E Meuti
- Department of Entomology, The Ohio State University, 2021 Coffey Rd, Columbus, OH, 43210, USA
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11
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Labes S, Froy O, Tabach Y, Shamir R, Shouval DS, Weintraub Y. Mucosal Genes Encoding Clock, Inflammation and Their Mutual Regulators Are Disrupted in Pediatric Patients with Active Ulcerative Colitis. Int J Mol Sci 2024; 25:1488. [PMID: 38338765 PMCID: PMC10855499 DOI: 10.3390/ijms25031488] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Patients with active ulcerative colitis (UC) display a misalignment of the circadian clock, which plays a vital role in various immune functions. Our aim was to characterize the expression of clock and inflammation genes, and their mutual regulatory genes in treatment-naïve pediatric patients with UC. Using the Inflammatory Bowel Disease Transcriptome and Metatranscriptome Meta-Analysis (IBD TaMMA) platform and R algorithms, we analyzed rectal biopsy transcriptomic data from two cohorts (206 patients with UC vs. 20 healthy controls from the GSE-109142 study, and 43 patients with UC vs. 55 healthy controls from the GSE-117993 study). We compared gene expression levels and correlation of clock genes (BMAL1, CLOCK, PER1, PER2, CRY1, CRY2), inflammatory genes (IκB, IL10, NFκB1, NFκB2, IL6, TNFα) and their mutual regulatory genes (RORα, RORγ, REV-ERBα, PGC1α, PPARα, PPARγ, AMPK, SIRT1) in patients with active UC and healthy controls. The clock genes BMAL1, CLOCK, PER1 and CRY1 and the inflammatory genes IκB, IL10, NFκB1, NFκB2, IL6 and TNFα were significantly upregulated in patients with active UC. The genes encoding the mutual regulators RORα, RORγ, PGC1α, PPARα and PPARγ were significantly downregulated in patients with UC. A uniform pattern of gene expression was found in healthy controls compared to the highly variable expression pattern in patients with UC. Among the healthy controls, inflammatory genes were positively correlated with clock genes and they all showed reduced expression. The difference in gene expression levels was associated with disease severity and endoscopic score but not with histological score. In patients with active UC, clock gene disruption is associated with abnormal mucosal immune response. Disrupted expression of genes encoding clock, inflammation and their mutual regulators together may play a role in active UC.
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Affiliation(s)
- Sapir Labes
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, The Hebrew University of Jerusalem, Jerusalem 91905, Israel; (S.L.); (Y.T.)
| | - Oren Froy
- Institute of Biochemistry, Food Science and Nutrition, Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot 7610001, Israel
| | - Yuval Tabach
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, The Hebrew University of Jerusalem, Jerusalem 91905, Israel; (S.L.); (Y.T.)
| | - Raanan Shamir
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petach Tikva 4920235, Israel; (R.S.); (D.S.S.); (Y.W.)
- Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Dror S. Shouval
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petach Tikva 4920235, Israel; (R.S.); (D.S.S.); (Y.W.)
- Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Yael Weintraub
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petach Tikva 4920235, Israel; (R.S.); (D.S.S.); (Y.W.)
- Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
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12
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Stockenhuber R, Akiyama R, Tissot N, Milosavljevic S, Yamazaki M, Wyler M, Arongaus AB, Podolec R, Sato Y, Widmer A, Ulm R, Shimizu KK. UV RESISTANCE LOCUS 8-Mediated UV-B Response Is Required Alongside CRYPTOCHROME 1 for Plant Survival in Sunlight under Field Conditions. Plant Cell Physiol 2024; 65:35-48. [PMID: 37757822 PMCID: PMC10799719 DOI: 10.1093/pcp/pcad113] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 09/19/2023] [Accepted: 09/26/2023] [Indexed: 09/29/2023]
Abstract
As sessile, photoautotrophic organisms, plants are subjected to fluctuating sunlight that includes potentially detrimental ultraviolet-B (UV-B) radiation. Experiments under controlled conditions have shown that the UV-B photoreceptor UV RESISTANCE LOCUS 8 (UVR8) controls acclimation and tolerance to UV-B in Arabidopsis thaliana; however, its long-term impact on plant fitness under naturally fluctuating environments remain poorly understood. Here, we quantified the survival and reproduction of different Arabidopsis mutant genotypes under diverse field and laboratory conditions. We found that uvr8 mutants produced more fruits than wild type when grown in growth chambers under artificial low-UV-B conditions but not under natural field conditions, indicating a fitness cost in the absence of UV-B stress. Importantly, independent double mutants of UVR8 and the blue light photoreceptor gene CRYPTOCHROME 1 (CRY1) in two genetic backgrounds showed a drastic reduction in fitness in the field. Experiments with UV-B attenuation in the field and with supplemental UV-B in growth chambers demonstrated that UV-B caused the cry1 uvr8 conditional lethal phenotype. Using RNA-seq data of field-grown single and double mutants, we explicitly identified genes showing significant statistical interaction of UVR8 and CRY1 mutations in the presence of UV-B in the field. They were enriched in Gene Ontology categories related to oxidative stress, photoprotection and DNA damage repair in addition to UV-B response. Our study demonstrates the functional importance of the UVR8-mediated response across life stages in natura, which is partially redundant with that of cry1. Moreover, these data provide an integral picture of gene expression associated with plant responses under field conditions.
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Affiliation(s)
- Reinhold Stockenhuber
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Reiko Akiyama
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Nicolas Tissot
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, 30 Quai E. Ansermet, Geneva 1211, Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva 1211, Switzerland
| | - Stefan Milosavljevic
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
- SIB Swiss Institute of Bioinformatics, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Misako Yamazaki
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Michele Wyler
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, Zurich 8008, Switzerland
| | - Adriana B Arongaus
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, 30 Quai E. Ansermet, Geneva 1211, Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva 1211, Switzerland
| | - Roman Podolec
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, 30 Quai E. Ansermet, Geneva 1211, Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva 1211, Switzerland
| | - Yasuhiro Sato
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Alex Widmer
- Institute of Integrative Biology, ETH Zurich, Universitätstrasse 16, Zurich 8092, Switzerland
| | - Roman Ulm
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, 30 Quai E. Ansermet, Geneva 1211, Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva 1211, Switzerland
| | - Kentaro K Shimizu
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka, Totsuka-ward, Yokohama 244-0813, Japan
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13
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Jia Q, Yin Y, Gai S, Tian L, Zhu Z, Qin L, Wang Y. Onion cryptochrome 1 (AcCRY1) regulates photomorphogenesis and photoperiod flowering in Arabidopsis and exploration of its functional mechanisms under blue light. Plant Physiol Biochem 2024; 206:108300. [PMID: 38157835 DOI: 10.1016/j.plaphy.2023.108300] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 12/16/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
Cryptochromes (CRYs), as blue-light photoreceptors, play a crucial role in regulating flowering time and hypocotyl and cotyledon development. Their physiological functions have been extensively studied in various plant species. However, research on onions remains limited. In this study, we identified AcCRY1 and conducted preliminary investigations into its function. Our results demonstrate that AcCRY1 possesses a conserved domain typical of cryptochromes with high homology to those found in monocots. Furthermore, we examined the expression level of AcCRY1 in onion. The green tissues is significantly higher compared to non-green tissues, and it exhibits a significant response to blue-light induction. AcCRY1 demonstrates cytoplasmic localization under blue-light conditions, while it localizes in the nucleus during darkness, indicating a strong dependence on blue-light for its subcellular distribution. In comparison to cry1, overexpression of AcCRY1 leads to a significant shorten in seedling hypocotyl length, notable expansion of cotyledons, and acceleration of flowering time. The yeast two-hybrid experiment demonstrated the in vitro interaction between AcCRY1, AcCOP1, and AcSPA1. Additionally, BIFC analysis confirmed their interaction in Onion epidermis. Notably, under blue-light conditions, a significantly enhanced binding activity was observed compared to dark conditions. These findings establish a functional foundation for the regulatory role of AcCRY1 in important physiological processes of onion and provide initial insights into the underlying molecular mechanisms.
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Affiliation(s)
- Qingwei Jia
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yuqing Yin
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shuting Gai
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Lu Tian
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Zhihao Zhu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Lei Qin
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Yong Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, 150030, PR China; College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China.
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14
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Zhao X, Huang S, Zhang P, Qiao X, Liu Y, Dong M, Yi Q, Wang L, Song L. A circadian clock protein cryptochrome inhibits the expression of inflammatory cytokines in Chinese mitten crab (Eriocheir sinensis). Int J Biol Macromol 2023; 253:126591. [PMID: 37659496 DOI: 10.1016/j.ijbiomac.2023.126591] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/25/2023] [Accepted: 08/27/2023] [Indexed: 09/04/2023]
Abstract
Cryptochrome (Cry), as important flavoprotein, plays a key role in regulating the innate immune response, such as the release of inflammatory cytokines. In the present study, a cryptochrome homologue (EsCry) was identified from Chinese mitten crab Eriocheir sinensis, which contained a typical DNA photolyase domain, a FAD binding domain. The transcripts of EsCry were highly expressed at 11:00, and lowest at 3:00 within one day, while those of Interleukin enhancer binding factor (EsILF), Lipopolysaccharide-induced TNF-alpha factor (EsLITAF), Tumor necrosis factor (EsTNF) and Interleukin-16 (EsIL-16) showed a rhythm expression pattern contrary to EsCry. After EsCry was knocked down by dsEsCry injection, mRNA transcripts of Timeless (EsTim), Cycle (EsCyc), Circadian locomotor output cycles kaput (EsClock), Period (EsPer), and EsLITAF, EsTNF, EsILF, EsIL-16, as well as phosphorylation level of Dorsal significantly up-regulated. The transcripts of EsLITAF, EsTNF, EsILF, and EsIL-16 in EsCry-RNAi crabs significantly down-regulated after injection of NF-κB inhibitor. The interactions of EsCyc and EsCry, EsCyc and Dorsal were observed in vitro. These results indicated that EsCry negatively regulated the expression of the cytokine TNF and IL-16 via inhibiting their transcription factor LITAF and ILF through NF-κB signaling pathway, which provide evidences to better understand the circadian regulation mechanism of cytokine production in crabs.
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Affiliation(s)
- Xinyu Zhao
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China; Functional Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China
| | - Shu Huang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China; Southern Laboratory of Ocean Science and Engineering, Guangdong, Zhuhai 519000, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian 116023, China
| | - Peng Zhang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Xue Qiao
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian 116023, China
| | - Yu Liu
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Miren Dong
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Qilin Yi
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China; Functional Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China; Southern Laboratory of Ocean Science and Engineering, Guangdong, Zhuhai 519000, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian 116023, China.
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China; Functional Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China; Southern Laboratory of Ocean Science and Engineering, Guangdong, Zhuhai 519000, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian 116023, China.
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15
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Mo W, Su S, Shang R, Yang L, Zhao X, Wu C, Yang Z, Zhang H, Wu L, Liu Y, He Y, Zhang R, Zuo Z. Optogenetic induction of caspase-8 mediated apoptosis by employing Arabidopsis cryptochrome 2. Sci Rep 2023; 13:23067. [PMID: 38155283 PMCID: PMC10754905 DOI: 10.1038/s41598-023-50561-y] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 12/21/2023] [Indexed: 12/30/2023] Open
Abstract
Apoptosis, a programmed cell death mechanism, is a regulatory process controlling cell proliferation as cells undergo demise. Caspase-8 serves as a pivotal apoptosis-inducing factor that initiates the death receptor-mediated apoptosis pathway. In this investigation, we have devised an optogenetic method to swiftly modulate caspase-8 activation in response to blue light. The cornerstone of our optogenetic tool relies on the PHR domain of Arabidopsis thaliana cryptochrome 2, which self-oligomerizes upon exposure to blue light. In this study, we have developed two optogenetic approaches for rapidly controlling caspase-8 activation in response to blue light in cellular systems. The first strategy, denoted as Opto-Casp8-V1, entails the fusion expression of the Arabidopsis blue light receptor CRY2 N-terminal PHR domain with caspase-8. The second strategy, referred to as Opto-Casp8-V2, involves the independent fusion expression of caspase-8 with the PHR domain and the CRY2 blue light-interacting protein CIB1 N-terminal CIB1N. Upon induction with blue light, PHR undergoes aggregation, leading to caspase-8 aggregation. Additionally, the blue light-dependent interaction between PHR and CIB1N also results in caspase-8 aggregation. We have validated these strategies in both HEK293T and HeLa cells. The findings reveal that both strategies are capable of inducing apoptosis, with Opto-Casp8-V2 demonstrating significantly superior efficiency compared to Opto-Casp8-V1.
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Affiliation(s)
- Weiliang Mo
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Shengzhong Su
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Ruige Shang
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Liang Yang
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Xuelai Zhao
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Chengfeng Wu
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Zhenming Yang
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - He Zhang
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Liuming Wu
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Yibo Liu
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Yun He
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China
| | - Ruipeng Zhang
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China.
| | - Zecheng Zuo
- Jlin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, China.
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16
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Zhang K, Mi F, Li X, Wang Z, Jiang F, Song E, Guo P, Lan X. Detection of genetic variation in bovine CRY1 gene and its associations with carcass traits. Anim Biotechnol 2023; 34:3387-3394. [PMID: 36448652 DOI: 10.1080/10495398.2022.2149547] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The biological clock (also known as circadian clock) is closely related to growth and development, metabolism, and diseases in animals. As a part of the circadian clock, the cryptochrome circadian regulator 1 (CRY1) gene is involved in the regulation of biological processes such as osteogenesis, energy metabolism and cell proliferation, however, few studies have been reported on the relationship between this gene and animal carcass traits. Herein, a total of four insertion/deletion (InDel) loci within the CRY1 gene were detected in Shandong Black Cattle Genetic Resource (SDBCGR) population (n = 433). Among them, the P1-6-bp-del locus was polymorphic in population of interest. Moreover, the P1-6-bp-del locus showed two genotypes, with a higher insertion/insertion (II) genotype frequency (0.751) than insertion/deletion (ID) genotype frequency (0.249). Correlation analysis showed that the P1-6-bp-del locus polymorphisms were significantly associated with twenty carcass traits (e.g., slaughter weight, limb weight, and belly meat weight). Individuals with II genotype were significantly better than those with ID genotype for eighteen carcass traits. Therefore, the P1-6-bp-del locus of the CRY1 gene can be used as a molecular marker for beef cattle breeding.
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Affiliation(s)
- Kejing Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Fang Mi
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuelan Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Zhiying Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Fugui Jiang
- Shandong Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Enliang Song
- Shandong Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Peng Guo
- College of Computer and Information Engineering, Tianjin Agricultural University, Tianjin, China
| | - Xianyong Lan
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
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17
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McElroy KE, Audino JA, Serb JM. Molluscan Genomes Reveal Extensive Differences in Photopigment Evolution Across the Phylum. Mol Biol Evol 2023; 40:msad263. [PMID: 38039155 PMCID: PMC10733189 DOI: 10.1093/molbev/msad263] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/14/2023] [Accepted: 11/14/2023] [Indexed: 12/03/2023] Open
Abstract
In animals, opsins and cryptochromes are major protein families that transduce light signals when bound to light-absorbing chromophores. Opsins are involved in various light-dependent processes, like vision, and have been co-opted for light-independent sensory modalities. Cryptochromes are important photoreceptors in animals, generally regulating circadian rhythm, they belong to a larger protein family with photolyases, which repair UV-induced DNA damage. Mollusks are great animals to explore questions about light sensing as eyes have evolved multiple times across, and within, taxonomic classes. We used molluscan genome assemblies from 80 species to predict protein sequences and examine gene family evolution using phylogenetic approaches. We found extensive opsin family expansion and contraction, particularly in bivalve xenopsins and gastropod Go-opsins, while other opsins, like retinochrome, rarely duplicate. Bivalve and gastropod lineages exhibit fluctuations in opsin repertoire, with cephalopods having the fewest number of opsins and loss of at least 2 major opsin types. Interestingly, opsin expansions are not limited to eyed species, and the highest opsin content was seen in eyeless bivalves. The dynamic nature of opsin evolution is quite contrary to the general lack of diversification in mollusk cryptochromes, though some taxa, including cephalopods and terrestrial gastropods, have reduced repertoires of both protein families. We also found complete loss of opsins and cryptochromes in multiple, but not all, deep-sea species. These results help set the stage for connecting genomic changes, including opsin family expansion and contraction, with differences in environmental, and biological features across Mollusca.
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Affiliation(s)
- Kyle E McElroy
- Ecology, Evolutionary, and Organismal Biology, Iowa State University, Ames, IA, USA
| | - Jorge A Audino
- Ecology, Evolutionary, and Organismal Biology, Iowa State University, Ames, IA, USA
- Department of Zoology, University of São Paulo, São Paulo, Brazil
| | - Jeanne M Serb
- Ecology, Evolutionary, and Organismal Biology, Iowa State University, Ames, IA, USA
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18
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Surme S, Ergun C, Gul S, Akyel YK, Gul ZM, Ozcan O, Ipek OS, Akarlar BA, Ozlu N, Taskin AC, Turkay M, Gören AC, Baris I, Ozturk N, Guzel M, Aydin C, Okyar A, Kavakli IH. TW68, cryptochromes stabilizer, regulates fasting blood glucose levels in diabetic ob/ob and high fat-diet-induced obese mice. Biochem Pharmacol 2023; 218:115896. [PMID: 37898388 DOI: 10.1016/j.bcp.2023.115896] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 10/30/2023]
Abstract
Cryptochromes (CRYs), transcriptional repressors of the circadian clock in mammals, inhibit cAMP production when glucagon activates G-protein coupled receptors. Therefore, molecules that modulate CRYs have the potential to regulate gluconeogenesis. In this study, we discovered a new molecule called TW68 that interacts with the primary pockets of mammalian CRY1/2, leading to reduced ubiquitination levels and increased stability. In cell-based circadian rhythm assays using U2OS Bmal1-dLuc cells, TW68 extended the period length of the circadian rhythm. Additionally, TW68 decreased the transcriptional levels of two genes, Phosphoenolpyruvate carboxykinase 1 (PCK1) and Glucose-6-phosphatase (G6PC), which play crucial roles in glucose biosynthesis during glucagon-induced gluconeogenesis in HepG2 cells. Oral administration of TW68 in mice showed good tolerance, a good pharmacokinetic profile, and remarkable bioavailability. Finally, when administered to fasting diabetic animals from ob/ob and HFD-fed obese mice, TW68 reduced blood glucose levels by enhancing CRY stabilization and subsequently decreasing the transcriptional levels of Pck1 and G6pc. These findings collectively demonstrate the antidiabetic efficacy of TW68 in vivo, suggesting its therapeutic potential for controlling fasting glucose levels in the treatment of type 2 diabetes mellitus.
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Affiliation(s)
- Saliha Surme
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Cagla Ergun
- Department of Chemical and Biological Engineering, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Seref Gul
- Istanbul University, Department of Biology, Biotechnology Division, TR-34116 Beyazit-İstanbul, Türkiye; Current address: Bezmialem Vakif University, Institute of Life Sciences and Biotechnology, Beykoz, Istanbul, Türkiye
| | - Yasemin Kubra Akyel
- Istanbul Medipol University, School of Medicine, Department of Medical Pharmacology, İstanbul, Türkiye; Istanbul University, Faculty of Pharmacy Department of Pharmacology, TR-34116 Beyazit-İstanbul, Türkiye
| | - Zeynep Melis Gul
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Onur Ozcan
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Ozgecan Savlug Ipek
- Istanbul Medipol University, Regenerative and Restorative Medicine Research Center (REMER), Kavacik Campus, Kavacik-Beykoz/İstanbul 34810, Türkiye
| | - Busra Aytul Akarlar
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Nurhan Ozlu
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Ali Cihan Taskin
- Department of Laboratory Animal Science, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Türkiye
| | - Metin Turkay
- Department of Industrial Engineering, Koc University, Rumelifeneri Yolu, İstanbul, Türkiye
| | - Ahmet Ceyhan Gören
- Gebze Technical University, Department of Chemistry, Gebze, Kocaeli, Türkiye
| | - Ibrahim Baris
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye
| | - Nuri Ozturk
- Gebze Technical University, Department of Molecular Biology and Genetics, Gebze, Kocaeli, Türkiye
| | - Mustafa Guzel
- Istanbul Medipol University, Regenerative and Restorative Medicine Research Center (REMER), Kavacik Campus, Kavacik-Beykoz/İstanbul 34810, Türkiye
| | - Cihan Aydin
- Department of Molecular Biology and Genetics, Istanbul Medeniyet University, Istanbul, Türkiye
| | - Alper Okyar
- Istanbul University, Faculty of Pharmacy Department of Pharmacology, TR-34116 Beyazit-İstanbul, Türkiye
| | - Ibrahim Halil Kavakli
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye; Department of Chemical and Biological Engineering, Koc University, Rumelifeneri Yolu, Istanbul, Türkiye.
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19
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Jiang B, Zhong Z, Gu L, Zhang X, Wei J, Ye C, Lin G, Qu G, Xiang X, Wen C, Hummel M, Bailey-Serres J, Wang Q, He C, Wang X, Lin C. Light-induced LLPS of the CRY2/SPA1/FIO1 complex regulating mRNA methylation and chlorophyll homeostasis in Arabidopsis. Nat Plants 2023; 9:2042-2058. [PMID: 38066290 PMCID: PMC10724061 DOI: 10.1038/s41477-023-01580-0] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 10/30/2023] [Indexed: 12/17/2023]
Abstract
Light regulates chlorophyll homeostasis and photosynthesis via various molecular mechanisms in plants. The light regulation of transcription and protein stability of nuclear-encoded chloroplast proteins have been extensively studied, but how light regulation of mRNA metabolism affects abundance of nuclear-encoded chloroplast proteins and chlorophyll homeostasis remains poorly understood. Here we show that the blue light receptor cryptochrome 2 (CRY2) and the METTL16-type m6A writer FIONA1 (FIO1) regulate chlorophyll homeostasis in response to blue light. In contrast to the CRY2-mediated photo-condensation of the mRNA adenosine methylase (MTA), photoexcited CRY2 co-condenses FIO1 only in the presence of the CRY2-signalling protein SUPPRESSOR of PHYTOCHROME A (SPA1). CRY2 and SPA1 synergistically or additively activate the RNA methyltransferase activity of FIO1 in vitro, whereas CRY2 and FIO1, but not MTA, are required for the light-induced methylation and translation of the mRNAs encoding multiple chlorophyll homeostasis regulators in vivo. Our study demonstrates that the light-induced liquid-liquid phase separation of the photoreceptor/writer complexes is commonly involved in the regulation of photoresponsive changes of mRNA methylation, whereas the different photo-condensation mechanisms of the CRY/FIO1 and CRY/MTA complexes explain, at least partially, the writer-specific functions in plant photomorphogenesis.
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Affiliation(s)
- Bochen Jiang
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China.
- Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, CA, USA.
- Department of Chemistry, The University of Chicago, Chicago, IL, USA.
| | - Zhenhui Zhong
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lianfeng Gu
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xueyang Zhang
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiangbo Wei
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
| | - Chang Ye
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
| | - Guifang Lin
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Gaoping Qu
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xian Xiang
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chenjin Wen
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Maureen Hummel
- Center for Plant Cell Biology and Department of Botany and Plant Sciences, University of California, Riverside, CA, USA
| | - Julia Bailey-Serres
- Center for Plant Cell Biology and Department of Botany and Plant Sciences, University of California, Riverside, CA, USA
| | - Qin Wang
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chuan He
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
| | - Xu Wang
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China.
- Shandong Laboratory of Advanced Agricultural Sciences at Weifang, Peking University Institute of Advanced Agricultural Sciences, Weifang, China.
| | - Chentao Lin
- Basic Forestry and Plant Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China.
- Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, CA, USA.
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20
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Parlak GC, Baris I, Gul S, Kavakli IH. Functional characterization of the CRY2 circadian clock component variant p.Ser420Phe revealed a new degradation pathway for CRY2. J Biol Chem 2023; 299:105451. [PMID: 37951306 PMCID: PMC10731238 DOI: 10.1016/j.jbc.2023.105451] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/13/2023] Open
Abstract
Cryptochromes (CRYs) are essential components of the circadian clock, playing a pivotal role as transcriptional repressors. Despite their significance, the precise mechanisms underlying CRYs' involvement in the circadian clock remain incompletely understood. In this study, we identified a rare CRY2 variant, p.Ser420Phe, from the 1000 Genomes Project and Ensembl database that is located in the functionally important coiled-coil-like helix (CC-helix) region. Functional characterization of this variant at the cellular level revealed that p.Ser420Phe CRY2 had reduced repression activity on CLOCK:BMAL1-driven transcription due to its reduced affinity to the core clock protein PER2 and defective translocation into the nucleus. Intriguingly, the CRY2 variant exhibited an unexpected resistance to degradation via the canonical proteasomal pathway, primarily due to the loss of interactions with E3 ligases (FBXL3 and FBXL21), which suggests Ser-420 of CRY2 is required for the interaction with E3 ligases. Further studies revealed that wild-type and CRY2 variants are degraded by the lysosomal-mediated degradation pathway, a mechanism not previously associated with CRY2. Surprisingly, our complementation study with Cry1-/-Cry2-/- double knockout mouse embryonic fibroblast cells indicated that the CRY2 variant caused a 7 h shorter circadian period length in contrast to the observed prolonged period length in CRY2-/- cell lines. In summary, this study reveals a hitherto unknown degradation pathway for CRY2, shedding new light on the regulation of circadian rhythm period length.
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Affiliation(s)
- Gizem Cagla Parlak
- Department of Molecular Biology and Genetics, Koc University, Istanbul, Turkiye
| | - Ibrahim Baris
- Department of Molecular Biology and Genetics, Koc University, Istanbul, Turkiye
| | - Seref Gul
- Institute of Life Sciences and Biotechnology, Bezmialem Vakif University, Beykoz, Turkiye
| | - Ibrahim Halil Kavakli
- Department of Molecular Biology and Genetics, Koc University, Istanbul, Turkiye; Department of Chemical and Biological Engineering, Koc University, Istanbul, Turkiye.
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21
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Lin L, Huang Y, Wang J, Guo X, Yu F, He D, Wu C, Guo L, Wu B. CRY1/2 regulate rhythmic CYP2A5 in mouse liver through repression of E4BP4. Biochem Pharmacol 2023; 217:115843. [PMID: 37797722 DOI: 10.1016/j.bcp.2023.115843] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
CYP2A5, an enzyme responsible for metabolism of diverse drugs, displays circadian rhythms in its expression and activity. However, the underlying mechanisms are not fully established. Here we aimed to investigate a potential role of CRY1/2 (circadian clock modulators) in circadian regulation of hepatic CYP2A5. Regulatory effects of CRY1/2 on CYP2A5 were determined using Cry1-null and Cry2-null mice, and validated using AML-12, Hepa1-6 and HepG2 cells. CYP2A5 activities both in vivo and in vitro were assessed using coumarin 7-hydroxylation as a probe reaction. mRNA and protein levels were detected by qPCR and western blotting, respectively. Regulatory mechanism was studied using a combination of luciferase reporter assays, chromatin immunoprecipitation (ChIP) and co-immunoprecipitation (Co-IP). We found that ablation of Cry1 or Cry2 in mice reduced hepatic CYP2A5 expression (at both mRNA and protein levels) and blunted its diurnal rhythms. Consistently, these knockouts showed decreased CYP2A5 activity (characterised by coumarin 7-hydroxylation) and a loss of its time-dependency, as well as exacerbated coumarin-induced hepatotoxicity. Cell-based assays confirmed that CRY1/2 positively regulated CYP2A5 expression and rhythms. Based on combined luciferase reporter, ChIP and Co-IP assays, we unraveled that CRY1/2 interacted with E4BP4 protein to repress its inhibitory effect on Cyp2a5 transcription and expression. In conclusion, CRY1/2 regulate rhythmic CYP2A5 in mouse liver through repression of E4BP4. These findings advance our understanding of circadian regulation of drug metabolism and pharmacokinetics.
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Affiliation(s)
- Luomin Lin
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Yuwei Huang
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinyi Wang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Xiaocao Guo
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Fangjun Yu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Di He
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Lianxia Guo
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Baojian Wu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China.
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22
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Lindbäck LN, Ji Y, Cervela-Cardona L, Jin X, Pedmale UV, Strand Å. An interplay between bZIP16, bZIP68, and GBF1 regulates nuclear photosynthetic genes during photomorphogenesis in Arabidopsis. New Phytol 2023; 240:1082-1096. [PMID: 37602940 PMCID: PMC10592178 DOI: 10.1111/nph.19219] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 07/20/2023] [Indexed: 08/22/2023]
Abstract
The development of a seedling into a photosynthetically active plant is a crucial process. Despite its importance, we do not fully understand the regulatory mechanisms behind the establishment of functional chloroplasts. We herein provide new insight into the early light response by identifying the function of three basic region/leucine zipper (bZIP) transcription factors: bZIP16, bZIP68, and GBF1. These proteins are involved in the regulation of key components required for the establishment of photosynthetically active chloroplasts. The activity of these bZIPs is dependent on the redox status of a conserved cysteine residue, which provides a mechanism to finetune light-responsive gene expression. The blue light cryptochrome (CRY) photoreceptors provide one of the major light-signaling pathways, and bZIP target genes overlap with one-third of CRY-regulated genes with an enrichment for photosynthesis/chloroplast-associated genes. bZIP16, bZIP68, and GBF1 were demonstrated as novel interaction partners of CRY1. The interaction between CRY1 and bZIP16 was stimulated by blue light. Furthermore, we demonstrate a genetic link between the bZIP proteins and cryptochromes as the cry1cry2 mutant is epistatic to the cry1cry2bzip16bzip68gbf1 mutant. bZIP16, bZIP68, and GBF1 regulate a subset of photosynthesis associated genes in response to blue light critical for a proper greening process in Arabidopsis.
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Affiliation(s)
- Louise Norén Lindbäck
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Yan Ji
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-901 87 Umeå, Sweden
| | - Luis Cervela-Cardona
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-901 87 Umeå, Sweden
| | - Xu Jin
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-901 87 Umeå, Sweden
| | - Ullas V. Pedmale
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA
| | - Åsa Strand
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-901 87 Umeå, Sweden
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23
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Li W, Xiong X, Kiperman T, Ma K. Transcription Repression of CRY2 via PER2 Interaction Promotes Adipogenesis. Mol Cell Biol 2023; 43:500-514. [PMID: 37724597 PMCID: PMC10569361 DOI: 10.1080/10985549.2023.2253710] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 08/25/2023] [Indexed: 09/21/2023] Open
Abstract
The circadian clock is driven by a transcriptional-translational feedback loop, and cryptochrome 2 (CRY2) represses CLOCK/BMAL1-induced transcription activation. Despite the established role of clock in adipogenic regulation, whether the CRY2 repressor activity functions in adipocyte biology remains unclear. Here we identify a critical cysteine residue of CRY2 that mediates interaction with Period 2 (PER2). We further demonstrate that this mechanism is required for repressing circadian clock-controlled Wnt signaling to promote adipogenesis. CRY2 protein is enriched in white adipose depots and robustly induced by adipogenic differentiation. Via site-directed mutagenesis, we identified that a conserved CRY2 cysteine at 432 within the loop interfacing with PER2 mediates heterodimer complex formation that confers transcription repression. C432 mutation disrupted PER2 association without affecting BMAL1 binding, leading to loss of repression of clock transcription activation. In preadipocytes, whereas CRY2 enhanced adipocyte differentiation, the repression-defective C432 mutant suppressed this process. Furthermore, silencing of CRY2 attenuated, while stabilization of CRY2 by KL001 markedly augmented adipocyte maturation. Mechanistically, we show that transcriptional repression of Wnt pathway components underlies CRY2 modulation of adipogenesis. Collectively, our findings elucidate a CRY2-mediated repression mechanism that promotes adipocyte development, and implicate its potential as a clock intervention target for obesity.
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Affiliation(s)
- Weini Li
- Department of Diabetes Complications & Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Xuekai Xiong
- Department of Diabetes Complications & Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Tali Kiperman
- Department of Diabetes Complications & Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Ke Ma
- Department of Diabetes Complications & Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
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24
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Mello RM, Pariollaud M, Lamia KA. Circadian disruption does not alter tumorigenesis in a mouse model of lymphoma. F1000Res 2023; 12:49. [PMID: 37811199 PMCID: PMC10558980 DOI: 10.12688/f1000research.125272.2] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/25/2023] [Indexed: 10/10/2023] Open
Abstract
Background: Disruption of natural light cycles, as experienced by shift workers, is linked to enhanced cancer incidence. Several mouse models of cancer develop more severe disease when exposed to irregular light/dark cycles, supporting the connection between circadian disruption and increased cancer risk. Cryptochrome 2 (CRY2), a repressive component of the molecular circadian clock, facilitates turnover of the oncoprotein c-MYC, one mechanism that may link the molecular clock to tumorigenesis. In Eμ-MYC mice, which express transgenic c-MYC in B cells and develop aggressive lymphomas and leukemia, global Cry2 deletion reduces survival and enhances tumor formation. Lighting conditions that mimic the disruption experienced by shift workers dampen Cry2 transcripts in peripheral tissues of C57BL/6J mice. Although it is milder than homozygous deletion of Cry2, we hypothesized that reduced Cry2 rhythmicity could alter MYC protein accumulation and contribute to enhanced cancer risk caused by circadian disruption. We tested this hypothesis in MYC-driven lymphoma. Methods: We housed Eμ-MYC mice in light-tight boxes set to either control (continuous cycles of 12-hours of light followed by 12-hours of dark, LD12:12) or chronic jetlag (eight-hour light phase advances every two to three days, CJL) lighting conditions and assessed the impact of disrupted light cycles on survival and tumor formation in Eμ-MYC mice. Results: Environmental disruption of circadian rhythms did not alter tumor location, tumor growth, or survival in Eμ-MYC mice. Conclusions: Dampened rhythms of Cry2 following disruption of circadian light exposures is milder than deletion of Cry2. The lack of phenotype caused by altered circadian gene expression in contrast to enhanced tumorigenesis caused by homozygous deletion of Cry2 suggests that CRY2 dosage impacts this model. Importantly, these findings indicate that increased cancer risk associated with circadian disruption arises from one or more mechanisms that are not recapitulated here, and may be different in distinct tumor types.
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Affiliation(s)
- Rebecca M Mello
- Molecular Medicine, Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Marie Pariollaud
- Molecular Medicine, Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Katja A Lamia
- Molecular Medicine, Scripps Research Institute, La Jolla, CA, 92037, USA
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25
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Emmerich HJ, Schneider L, Essen LO. Structural and Functional Analysis of a Prokaryotic (6-4) Photolyase from the Aquatic Pathogen Vibrio Cholerae †. Photochem Photobiol 2023; 99:1248-1257. [PMID: 36692077 DOI: 10.1111/php.13783] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/19/2023] [Indexed: 01/25/2023]
Abstract
Photolyases are flavoproteins, which are able to repair UV-induced DNA lesions in a light-dependent manner. According to their substrate, they can be distinguished as CPD- and (6-4) photolyases. While CPD-photolyases repair the predominantly occurring cyclobutane pyrimidine dimer lesion, (6-4) photolyases catalyze the repair of the less prominent (6-4) photoproduct. The subgroup of prokaryotic (6-4) photolyases/FeS-BCP is one of the most ancient types of flavoproteins in the ubiquitously occurring photolyase & cryptochrome superfamily (PCSf). In contrast to canonical photolyases, prokaryotic (6-4) photolyases possess a few particular characteristics, including a lumazine derivative as antenna chromophore besides the catalytically essential flavin adenine dinucleotide as well as an elongated linker region between the N-terminal α/β-domain and the C-terminal all-α-helical domain. Furthermore, they can harbor an additional short subdomain, located at the C-terminus, with a binding site for a [4Fe-4S] cluster. So far, two crystal structures of prokaryotic (6-4) photolyases have been reported. Within this study, we present the high-resolution structure of the prokaryotic (6-4) photolyase from Vibrio cholerae and its spectroscopic characterization in terms of in vitro photoreduction and DNA-repair activity.
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Affiliation(s)
- Hans-Joachim Emmerich
- Unit for Structural Biochemistry, Department of Chemistry, Philipps University Marburg, Marburg, Germany
| | - Leonie Schneider
- Unit for Structural Biochemistry, Department of Chemistry, Philipps University Marburg, Marburg, Germany
| | - Lars-Oliver Essen
- Unit for Structural Biochemistry, Department of Chemistry, Philipps University Marburg, Marburg, Germany
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Abramova A, Vereshchagin M, Kulkov L, Kreslavski VD, Kuznetsov VV, Pashkovskiy P. Potential Role of Phytochromes A and B and Cryptochrome 1 in the Adaptation of Solanum lycopersicum to UV-B Radiation. Int J Mol Sci 2023; 24:13142. [PMID: 37685948 PMCID: PMC10488226 DOI: 10.3390/ijms241713142] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
UV-B causes both damage to the photosynthetic apparatus (PA) and the activation of specific mechanisms that protect the PA from excess energy and trigger a cascade of regulatory interactions with different photoreceptors, including phytochromes (PHYs) and cryptochromes (CRYs). However, the role of photoreceptors in plants' responses to UV-B radiation remains undiscovered. This study explores some of these responses using tomato photoreceptor mutants (phya, phyb1, phyab2, cry1). The effects of UV-B exposure (12.3 µmol (photons) m-2 s-1) on photosynthetic rates and PSII photochemical activity, the contents of photosynthetic and UV-absorbing pigments and anthocyanins, and the nonenzymatic antioxidant capacity (TEAC) were studied. The expression of key light-signaling genes, including UV-B signaling and genes associated with the biosynthesis of chlorophylls, carotenoids, anthocyanins, and flavonoids, was also determined. Under UV-B, phyab2 and cry1 mutants demonstrated a reduction in the PSII effective quantum yield and photosynthetic rate, as well as a reduced value of TEAC. At the same time, UV-B irradiation led to a noticeable decrease in the expression of the ultraviolet-B receptor (UVR8), repressor of UV-B photomorphogenesis 2 (RUP2), cullin 4 (CUL4), anthocyanidin synthase (ANT), phenylalanine ammonia-lease (PAL), and phytochrome B2 (PHYB2) genes in phyab2 and RUP2, CUL4, ANT, PAL, and elongated hypocotyl 5 (HY5) genes in the cry1 mutant. The results indicate the mutual regulation of UVR8, PHYB2, and CRY1 photoreceptors, but not PHYB1 and PHYA, in the process of forming a response to UV-B irradiation in tomato.
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Affiliation(s)
- Anna Abramova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
| | - Mikhail Vereshchagin
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
| | - Leonid Kulkov
- Department of Technologies for the Production of Vegetable, Medicinal and Essential Oils, Russian State Agrarian University, Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127550, Russia;
| | - Vladimir D. Kreslavski
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino 142290, Russia
| | - Vladimir V. Kuznetsov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
| | - Pavel Pashkovskiy
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
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Wang W, Gao L, Zhao T, Chen J, Chen T, Lin W. Arabidopsis NF-YC7 Interacts with CRY2 and PIF4/5 to Repress Blue Light-Inhibited Hypocotyl Elongation. Int J Mol Sci 2023; 24:12444. [PMID: 37569819 PMCID: PMC10419918 DOI: 10.3390/ijms241512444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/07/2023] [Accepted: 06/20/2023] [Indexed: 08/13/2023] Open
Abstract
Light is an important environmental factor. Plants adapt to their light environment by developing the optimal phenotypes. Light-mediated hypocotyl growth is an ideal phenotype for studying how plants respond to light. Thus far, many signaling components in light-mediated hypocotyl growth have been reported. Here, we focused on identifying the transcription factors (TFs) involved in blue light-mediated hypocotyl growth. We analyzed the blue-light-mediated hypocotyl lengths of Arabidopsis TF-overexpressing lines and identified three NF-YC proteins, NF-YC7, NF-YC5, and NF-YC8 (NF-YCs being the short name), as the negative regulators in blue light-inhibited hypocotyl elongation. NF-YC-overexpressing lines developed longer hypocotyls than those of the wild type under blue light, while the deficient mutants nf-yc5nf-yc7 and nf-yc7nf-yc8 failed to exhibit hypocotyl elongation under blue light. NF-YCs physically interacted with CRY2 (cryptochrome 2) and PIF4/5 (phytochrome interacting factor 4 or 5), while the NF-YCs-PIF4/5 interactions were repressed by CRY2. Moreover, the overexpression of CRY2 or deficiency of PIF4/5 repressed NF-YC7-induced hypocotyl elongation under blue light. Further investigation revealed that NF-YC7 may increase CRY2 degradation and regulate PIF4/5 activities under blue light. Taken together, this study will provide new insight into the mechanism of how blue light inhibits hypocotyl elongation.
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Affiliation(s)
- Wei Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- College of Life Sciences, Ningde Normal University, Ningde 352100, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lin Gao
- Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Tianliang Zhao
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiamei Chen
- Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ting Chen
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Guo T, Liu M, Chen L, Liu Y, Li L, Li Y, Cao X, Mao Z, Wang W, Yang HQ. Photoexcited cryptochromes interact with ADA2b and SMC5 to promote the repair of DNA double-strand breaks in Arabidopsis. Nat Plants 2023; 9:1280-1290. [PMID: 37488265 DOI: 10.1038/s41477-023-01461-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/20/2023] [Indexed: 07/26/2023]
Abstract
Cryptochromes (CRYs) act as blue-light photoreceptors that regulate development and circadian rhythms in plants and animals and as navigating magnetoreceptors in migratory birds. DNA double-strand breaks (DSBs) are the most serious type of DNA damage and threaten genome stability in all organisms. Although CRYs have been shown to respond to DNA damage, whether and how they participate in DSB repair is not well understood. Here we report that Arabidopsis CRYs promote the repair of DSBs through direct interactions with ADA2b and SMC5 in a blue-light-dependent manner to enhance their interaction. Mutations in CRYs and in ADA2b lead to similar enhanced DNA damage accumulation. In response to DNA damage, CRYs are localized at DSBs, and the recruitment of SMC5 to DSBs is dependent on CRYs. These results suggest that CRY-enhanced ADA2b-SMC5 interaction promotes ADA2b-mediated recruitment of SMC5 to DSBs, leading to DSB repair.
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Affiliation(s)
- Tongtong Guo
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Minqing Liu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Li Chen
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Yao Liu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Ling Li
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yupeng Li
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Xiaoli Cao
- School of Life Sciences, Fudan University, Shanghai, China
| | - Zhilei Mao
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Wenxiu Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Hong-Quan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China.
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Richhariya S, Shin D, Le JQ, Rosbash M. Dissecting neuron-specific functions of circadian genes using modified cell-specific CRISPR approaches. Proc Natl Acad Sci U S A 2023; 120:e2303779120. [PMID: 37428902 PMCID: PMC10629539 DOI: 10.1073/pnas.2303779120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/07/2023] [Indexed: 07/12/2023] Open
Abstract
Circadian behavioral rhythms in Drosophila melanogaster are regulated by about 75 pairs of brain neurons. They all express the core clock genes but have distinct functions and gene expression profiles. To understand the importance of these distinct molecular programs, neuron-specific gene manipulations are essential. Although RNAi based methods are standard to manipulate gene expression in a cell-specific manner, they are often ineffective, especially in assays involving smaller numbers of neurons or weaker Gal4 drivers. We and others recently exploited a neuron-specific CRISPR-based method to mutagenize genes within circadian neurons. Here, we further explore this approach to mutagenize three well-studied clock genes: the transcription factor gene vrille, the photoreceptor gene Cryptochrome (cry), and the neuropeptide gene Pdf (pigment dispersing factor). The CRISPR-based strategy not only reproduced their known phenotypes but also assigned cry function for different light-mediated phenotypes to discrete, different subsets of clock neurons. We further tested two recently published methods for temporal regulation in adult neurons, inducible Cas9 and the auxin-inducible gene expression system. The results were not identical, but both approaches successfully showed that the adult-specific knockout of the neuropeptide Pdf reproduces the canonical loss-of-function mutant phenotypes. In summary, a CRISPR-based strategy is a highly effective, reliable, and general method to temporally manipulate gene function in specific adult neurons.
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Wollesen T, Rodriguez Monje SV, Oel AP, Arendt D. Characterization of eyes, photoreceptors, and opsins in developmental stages of the arrow worm Spadella cephaloptera (Chaetognatha). J Exp Zool B Mol Dev Evol 2023; 340:342-353. [PMID: 36855226 PMCID: PMC10952353 DOI: 10.1002/jez.b.23193] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 02/03/2023] [Accepted: 02/16/2023] [Indexed: 03/02/2023]
Abstract
The phylogenetic position of chaetognaths, or arrow worms, has been debated for decades, however recently they have been grouped into the Gnathifera, a sister clade to all other Spiralia. Chaetognath photoreceptor cells are anatomically unique by exhibiting a highly modified cilium and are arranged differently in the eyes of the various species. Studies investigating eye development and underlying gene regulatory networks are so far missing. To gain insights into the development and the molecular toolkit of chaetognath photoreceptors and eyes a new transcriptome of the epibenthic species Spadella cephaloptera was searched for opsins. Our screen revealed two copies of xenopsin and a single copy of peropsin. Gene expression analyses demonstrated that only xenopsin1 is expressed in photoreceptor cells of the developing lateral eyes. Adults likewise exhibit two xenopsin1 + photoreceptor cells in each of their lateral eyes. Beyond that, a single cryptochrome gene was uncovered and found to be expressed in photoreceptor cells of the lateral developing eye. In addition, cryptochrome is also expressed in the cerebral ganglia in a region in which also peropsin expression was observed. This condition is reminiscent of a nonvisual photoreceptive zone in the apical nervous system of the annelid Platynereis dumerilii that performs circadian entrainment and melatonin release. Cryptochrome is also expressed in cells of the corona ciliata, an organ in the posterior dorsal head region, indicating a role in circadian entrainment. Our study highlights the importance of the Gnathifera for unraveling the evolution of photoreceptors and eyes in Spiralia and Bilateria.
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Affiliation(s)
- Tim Wollesen
- Department of Evolutionary Biology, Faculty of Life SciencesUniversity of ViennaViennaAustria
| | | | - Adam P. Oel
- Developmental Biology UnitEuropean Molecular Biology LaboratoryHeidelbergGermany
| | - Detlev Arendt
- Developmental Biology UnitEuropean Molecular Biology LaboratoryHeidelbergGermany
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31
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Liao J, Deng B, Yang Q, Li Y, Zhang Y, Cong J, Wang X, Kohnen MV, Liu ZJ, Lu MZ, Lin D, Gu L, Liu B. Insights into cryptochrome modulation of ABA signaling to mediate dormancy regulation in Marchantia polymorpha. New Phytol 2023; 238:1479-1497. [PMID: 36797656 DOI: 10.1111/nph.18815] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
The acquisition of dormancy capabilities has enabled plants to survive in adverse terrestrial environmental conditions. Dormancy accumulation and release is coupled with light signaling, which is well studied in Arabidopsis, but it is unclear in the distant nonvascular relative. We study the characteristics and function on dormancy regulation of a blue light receptor cryptochrome in Marchantia polymorpha (MpCRY). Here, we identified MpCRY via bioinformatics and mutant complement analysis. The biochemical characteristics were assessed by multiple protein-binding assays. The function of MpCRY in gemma dormancy was clarified by overexpression and mutation of MpCRY, and its mechanism was analyzed via RNA sequencing and quantitative PCR analyses associated with hormone treatment. We found that the unique MpCRY protein in M. polymorpha undergoes both blue light-promoted interaction with itself (self-interaction) and blue light-dependent phosphorylation. MpCRY has the specific characteristics of blue light-induced nuclear localization and degradation. We further demonstrated that MpCRY transcriptionally represses abscisic acid (ABA) signaling-related gene expression to suppress gemma dormancy, which is dependent on blue light signaling. Our findings indicate that MpCRY possesses specific biochemical and molecular characteristics, and modulates ABA signaling under blue light conditions to regulate gemma dormancy in M. polymorpha.
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Affiliation(s)
- Jiakai Liao
- Basic Forestry and Proteomics Research Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, School of Wetlands, Yancheng Teachers University, Yancheng, 224007, China
- Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Ban Deng
- Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Qixin Yang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, School of Wetlands, Yancheng Teachers University, Yancheng, 224007, China
- Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yu Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yuxiang Zhang
- Basic Forestry and Proteomics Research Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Jiajing Cong
- Basic Forestry and Proteomics Research Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Xiaqin Wang
- Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
| | - Markus V Kohnen
- Basic Forestry and Proteomics Research Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Zhong-Jian Liu
- Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Meng-Zhu Lu
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
| | - Deshu Lin
- Basic Forestry and Proteomics Research Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Lianfeng Gu
- Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Bobin Liu
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, School of Wetlands, Yancheng Teachers University, Yancheng, 224007, China
- Basic Forestry and Proteomics Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
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Kozuka T, Oka Y, Kohzuma K, Kusaba M. Cryptochromes suppress leaf senescence in response to blue light in Arabidopsis. Plant Physiol 2023; 191:2506-2518. [PMID: 36715309 PMCID: PMC10069897 DOI: 10.1093/plphys/kiad042] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 01/03/2023] [Indexed: 06/18/2023]
Abstract
The induction and progression of leaf senescence are effectively changed according to the light environment. The leaf senescence response is enhanced when plants are grown under a dense shade cast by neighboring vegetation. Although the fluence rate of the red and blue regions in the light spectrum is strongly attenuated under shade, photosensory mechanisms that underpin the blue light response are still unclear. In this study, we analyzed leaf senescence in response to blue light in Arabidopsis (Arabidopsis thaliana). We found that leaf senescence was promoted by the elimination of active phytochrome Pfr by pulsed far-red (FR) light, whereas irradiation with blue light suppressed leaf senescence in the wild type but not in the cryptochrome (CRY)-deficient mutant, cry1 cry2. Hence, two light-sensing modes contributed to the suppression of leaf senescence that was dependent on light spectrum features. First was the leaf senescence response to blue light, which was mediated exclusively by cryptochromes. Second was the phytochrome-mediated leaf senescence response to red/FR light. Physiological analysis of transgenic plants expressing green fluorescent protein (GFP)-tagged CRY2 revealed that photo-activation of cryptochromes was required to suppress leaf senescence in response to blue light. Transcriptomic analysis further uncovered the molecular and cellular processes involved in the regulation of leaf senescence downstream of cryptochromes. Furthermore, analysis of cryptochrome-downstream components indicated that ELONGATED HYPOCOTYL 5 (HY5) and PHYTOCHROME INTERACTING FACTOR (PIF) 4 and PIF5 were required for suppression and promotion of leaf senescence, respectively.
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Affiliation(s)
- Toshiaki Kozuka
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Yoshito Oka
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kaori Kohzuma
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Makoto Kusaba
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Kreiss M, Haas FB, Hansen M, Rensing SA, Hoecker U. Co-action of COP1, SPA and cryptochrome in light signal transduction and photomorphogenesis of the moss Physcomitrium patens. Plant J 2023; 114:159-175. [PMID: 36710658 DOI: 10.1111/tpj.16128] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
The Arabidopsis COP1/SPA ubiquitin ligase suppresses photomorphogenesis in darkness. In the light, photoreceptors inactivate COP1/SPA to allow a light response. While SPA genes are specific to the green lineage, COP1 also exists in humans. This raises the question of when in evolution plant COP1 acquired the need for SPA accessory proteins. We addressed this question by generating Physcomitrium Ppcop1 mutants and comparing their visible and molecular phenotypes with those of Physcomitrium Ppspa mutants. The phenotype of Ppcop1 nonuple mutants resembles that of Ppspa mutants. Most importantly, both mutants produce green chloroplasts in complete darkness. They also exhibit dwarfed gametophores, disturbed branching of protonemata and absent gravitropism. RNA-sequencing analysis indicates that both mutants undergo weak constitutive light signaling in darkness. PpCOP1 and PpSPA proteins form a complex and they interact via their WD repeat domains with the VP motif of the cryptochrome CCE domain in a blue light-dependent manner. This resembles the interaction of Arabidopsis SPA proteins with Arabidopsis CRY1, and is different from that with Arabidopsis CRY2. Taken together, the data indicate that PpCOP1 and PpSPA act together to regulate growth and development of Physcomitrium. However, in contrast to their Arabidopsis orthologs, PpCOP1 and PpSPA proteins execute only partial suppression of light signaling in darkness. Hence, additional repressors may exist that contribute to the repression of a light response in dark-exposed Physcomitrium.
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Affiliation(s)
- Melanie Kreiss
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), Biocenter, University of Cologne, Zülpicher Strasse 47b, 50674, Cologne, Germany
| | - Fabian B Haas
- Plant Cell Biology, Faculty of Biology, University of Marburg, Karl-von-Frisch-Strasse 8, 35043, Marburg, Germany
| | - Maike Hansen
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), Biocenter, University of Cologne, Zülpicher Strasse 47b, 50674, Cologne, Germany
| | - Stefan A Rensing
- Plant Cell Biology, Faculty of Biology, University of Marburg, Karl-von-Frisch-Strasse 8, 35043, Marburg, Germany
| | - Ute Hoecker
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), Biocenter, University of Cologne, Zülpicher Strasse 47b, 50674, Cologne, Germany
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Baris I, Ozcan O, Kavakli IH. Single nucleotide polymorphisms (SNPs) in circadian genes: Impact on gene function and phenotype. Adv Protein Chem Struct Biol 2023; 137:17-37. [PMID: 37709375 DOI: 10.1016/bs.apcsb.2023.03.002] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Circadian rhythm is an endogenous timing system that allows an organism to anticipate and adapt to daily changes and regulate various physiological variables such as the sleep-wake cycle. This rhythm is governed by a molecular circadian clock mechanism, generated by a transcriptional and translational feedback loop (TTFL) mechanism. In mammals, TTFL is determined by the interaction of four main clock proteins: BMAL1, CLOCK, Cryptochromes (CRY), and Periods (PER). BMAL1 and CLOCK form dimers and initiate the transcription of clock-controlled genes (CCG) by binding an E-box element with the promotor genes. Among CCGs, PERs and CRYs accumulate in the cytosol and translocate into the nucleus, where they interact with the BMAL1/CLOCK dimer and inhibit its activity. Several epidemiological and genetic studies have revealed that circadian rhythm disruption causes various types of disease. In this chapter, we summarize the effect of core clock gene SNPs on circadian rhythm and diseases in humans.
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Affiliation(s)
- Ibrahim Baris
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Sariyer, Istanbul, Türkiye
| | - Onur Ozcan
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Sariyer, Istanbul, Türkiye
| | - Ibrahim Halil Kavakli
- Department of Molecular Biology and Genetics, Koc University, Rumelifeneri Yolu, Sariyer, Istanbul, Türkiye; Department of Chemical and Biological Engineering, Koc University, Rumelifeneri Yolu, Sariyer, Istanbul, Türkiye.
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de Oliveira R, Alves FRR, da Rocha Prado E, Gomes LDL, Freschi L, Gaion LA, Carvalho RF. CRYPTOCHROME 1a-mediated blue light perception regulates tomato seed germination via changes in hormonal balance and endosperm-degrading hydrolase dynamics. Planta 2023; 257:67. [PMID: 36843173 DOI: 10.1007/s00425-023-04100-8] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Blue light exposure delays tomato seed germination by decreasing endosperm-degrading hydrolase activities, a process regulated by CRY1a-dependent signaling and the hormonal balance between ABA and GA. The germination of tomato seeds (Solanum lycopersicum L.) is tightly controlled by an internal hormonal balance, which is also influenced by environmental factors such as light. In this study, we investigated the blue light (BL)-mediated impacts on physiological, biochemical, and molecular processes during the germination of the blue light photoreceptor CRYPTOCHROME 1a loss-of-function mutant (cry1a) and of the hormonal tomato mutants notabilis (not, deficient in ABA) and procera (pro, displaying a GA-constitutive response). Seeds were germinated in a controlled chamber in the dark and under different intensities of continuous BL (ranging from 1 to 25 µmol m-2 s-1). In general, exposure to BL delayed tomato seed germination in a fluency rate-dependent way due to negative impacts on the activities of endosperm-degrading hydrolases, such as endo-β-mannanase, β-mannosidase, and α-galactosidase. However, not and pro mutants presented higher germination speed index (GSI) compared to WT despite the BL influence, associated with higher hydrolase activities, especially evident in pro, indicating that the ABA/GA hormonal balance is important to diminish BL inhibition over tomato germination. The cry1a germination percentage was higher than in WT in the dark but its GSI was lower under BL exposure, suggesting that functional CRY1a is required for BL-dependent germination. BL inhibits the expression of GA-biosynthetic genes, and induces GA-deactivating and ABA-biosynthetic genes. The magnitude of the BL influence over the hormone-related transcriptional profile is also dependent upon CRY1a, highlighting the complex interplay between light and hormonal pathways. These results contribute to a better understanding of BL-induced events behind the photoregulation of tomato seed germination.
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Affiliation(s)
- Reginaldo de Oliveira
- Department of Biology, São Paulo State University (UNESP), Jaboticabal, 14884-900, Brazil
| | - Frederico Rocha Rodrigues Alves
- Department of Systematics and Ecology, Center of Exact and Natural Sciences, Federal University of Paraíba, João Pessoa, PB, 58051-900, Brazil
| | | | | | - Luciano Freschi
- Department of Botany, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
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Yang J, Li L, Li X, Zhong M, Li X, Qu L, Zhang H, Tang D, Liu X, He C, Zhao X. The blue light receptor CRY1 interacts with FIP37 to promote N 6 -methyladenosine RNA modification and photomorphogenesis in Arabidopsis. New Phytol 2023; 237:840-854. [PMID: 36305219 DOI: 10.1111/nph.18583] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Light is a particularly important environmental cue that regulates a variety of diverse plant developmental processes, such as photomorphogenesis. Blue light promotes photomorphogenesis mainly through the activation of the photoreceptor cryptochrome 1 (CRY1). However, the mechanism underlying the CRY1-mediated regulation of growth is not fully understood. Here, we found that blue light induced N6 -methyladenosine (m6 A) RNA modification during photomorphogenesis partially via CRY1. Cryptochrome 1 mediates blue light-induced expression of FKBP12-interacting protein 37 (FIP37), which is a component of m6 A writer. Moreover, we showed that CRY1 physically interacted with FIP37 in vitro and in vivo, and mediated blue light activation of FIP37 binding to RNA. Furthermore, CRY1 and FIP37 modulated m6 A on photomorphogenesis-related genes PIF3, PIF4, and PIF5, thereby accelerating the decay of their transcripts. Genetically, FIP37 repressed hypocotyl elongation under blue light, and fip37 mutation could partially rescue the short-hypocotyl phenotype of CRY1-overexpressing plants. Together, our results provide a new insight into CRY1 signal in modulating m6 A methylation and stability of PIFs, and establish an essential molecular link between m6 A modification and determination of photomorphogenesis in plants.
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Affiliation(s)
- Jiaxin Yang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Lan Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
| | - Xin Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Ming Zhong
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Xinmei Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Lina Qu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Hui Zhang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Dongying Tang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
| | - Xuanming Liu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
| | - Chongsheng He
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
| | - Xiaoying Zhao
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research enter of Hybrid Rapeseed, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
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Ono M, Ando H, Daikoku T, Fujiwara T, Mieda M, Mizumoto Y, Iizuka T, Kagami K, Hosono T, Nomura S, Toyoda N, Sekizuka-Kagami N, Maida Y, Kuji N, Nishi H, Fujiwara H. The Circadian Clock, Nutritional Signals and Reproduction: A Close Relationship. Int J Mol Sci 2023; 24:ijms24021545. [PMID: 36675058 PMCID: PMC9865912 DOI: 10.3390/ijms24021545] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/15/2023] Open
Abstract
The circadian rhythm, which is necessary for reproduction, is controlled by clock genes. In the mouse uterus, the oscillation of the circadian clock gene has been observed. The transcription of the core clock gene period (Per) and cryptochrome (Cry) is activated by the heterodimer of the transcription factor circadian locomotor output cycles kaput (Clock) and brain and muscle Arnt-like protein-1 (Bmal1). By binding to E-box sequences in the promoters of Per1/2 and Cry1/2 genes, the CLOCK-BMAL1 heterodimer promotes the transcription of these genes. Per1/2 and Cry1/2 form a complex with the Clock/Bmal1 heterodimer and inactivate its transcriptional activities. Endometrial BMAL1 expression levels are lower in human recurrent-miscarriage sufferers. Additionally, it was shown that the presence of BMAL1-depleted decidual cells prevents trophoblast invasion, highlighting the importance of the endometrial clock throughout pregnancy. It is widely known that hormone synthesis is disturbed and sterility develops in Bmal1-deficient mice. Recently, we discovered that animals with uterus-specific Bmal1 loss also had poor placental development, and these mice also had intrauterine fetal death. Furthermore, it was shown that time-restricted feeding controlled the uterine clock's circadian rhythm. The uterine clock system may be a possibility for pregnancy complications, according to these results. We summarize the most recent research on the close connection between the circadian clock and reproduction in this review.
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Affiliation(s)
- Masanori Ono
- Department of Obstetrics and Gynecology, Tokyo Medical University, Tokyo 160-0023, Japan
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
- Correspondence: ; Tel.: +81-3-3342-6111
| | - Hitoshi Ando
- Department of Cellular and Molecular Function Analysis, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Takiko Daikoku
- Institute for Experimental Animals, Advanced Science Research Center, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Tomoko Fujiwara
- Department of Social Work and Life Design, Kyoto Notre Dame University, Kyoto 606-0848, Japan
| | - Michihiro Mieda
- Department of Integrative Neurophysiology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Yasunari Mizumoto
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Takashi Iizuka
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Kyosuke Kagami
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Takashi Hosono
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Satoshi Nomura
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Natsumi Toyoda
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
- Institute for Experimental Animals, Advanced Science Research Center, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Naomi Sekizuka-Kagami
- Department of Nursing, College of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Yoshiko Maida
- Department of Nursing, College of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Naoaki Kuji
- Department of Obstetrics and Gynecology, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Hirotaka Nishi
- Department of Obstetrics and Gynecology, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Hiroshi Fujiwara
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
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Kamat PK, Khan MB, Smith C, Siddiqui S, Baban B, Dhandapani K, Hess DC. The time dimension to stroke: Circadian effects on stroke outcomes and mechanisms. Neurochem Int 2023; 162:105457. [PMID: 36442686 PMCID: PMC9839555 DOI: 10.1016/j.neuint.2022.105457] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/14/2022] [Accepted: 11/19/2022] [Indexed: 11/26/2022]
Abstract
The circadian system is widely involved in the various pathological outcomes affected by time dimension changes. In the brain, the master circadian clock, also known as the "pacemaker," is present in the hypothalamus's suprachiasmatic nucleus (SCN). The SCN consists of molecular circadian clocks that operate in each neuron and other brain cells. These circadian mechanisms are controlled by the transcription and translation of specific genes such as the clock circadian regulator (Clock) and brain and muscle ARNT-Like 1 (Bmal1). Period (Per1-3) and cryptochrome (Cry1 and 2) negatively feedback and regulate the clock genes. Variations in the circadian cycle and these clock genes can affect stroke outcomes. Studies suggest that the peak stroke occurs in the morning after patients awaken from sleep, while stroke severity and poor outcomes worsen at midnight. The main risk factor associated with stroke is high blood pressure (hypertension). Blood pressure usually dips by 15-20% during sleep, but many hypertensives do not display this normal dipping pattern and are non-dippers. A sleep blood pressure is the primary determinant of stroke risk. This article discusses the possible mechanism associated with circadian rhythm and stroke outcomes.
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Affiliation(s)
- Pradip K Kamat
- Departments of Neurology, Medical College of Georgia, Augusta University, USA.
| | | | - Cameron Smith
- Departments of Neurology, Medical College of Georgia, Augusta University, USA
| | - Shahneela Siddiqui
- Departments of Neurology, Medical College of Georgia, Augusta University, USA
| | - Babak Baban
- Departments of Oral Biology, Dental College of Georgia, Augusta University, USA
| | - Krishnan Dhandapani
- Department of Neurosurgery, Medical College of Georgia, Augusta University, USA
| | - David C Hess
- Departments of Neurology, Medical College of Georgia, Augusta University, USA
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Singh S, Sharma P, Mishra S, Khurana P, Khurana JP. CRY2 gene of rice (Oryza sativa subsp. indica) encodes a blue light sensory receptor involved in regulating flowering, plant height and partial photomorphogenesis in dark. Plant Cell Rep 2023; 42:73-89. [PMID: 36251035 DOI: 10.1007/s00299-022-02937-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
OsiCRY2 is involved in light-regulated plant development and plays a role in regulating photomorphogenesis, plant height, flowering and most strikingly partial photomorphogenesis in dark. Cryptochrome 2 (CRY2), the blue/UV-A light photoreceptor in plants, has been reported to regulate photoperiod-dependent flowering and seedling photomorphogenesis (under low-intensity light). Among monocots, CRY2 has been reported from japonica rice, wheat, sorghum and barley. The two sub-species of rice, indica and japonica, exhibit a high degree of genetic variation and morphological and physiological differences. This article describes the characterization of CRY2 of indica rice (OsiCRY2). While the transcript levels of OsiCRY2 did not change significantly under blue light, its protein levels were found to decline with increased time duration under blue light. For phenotypic characterization, OsiCRY2 over-expression (OX) transgenics were generated in Oryza sativa Pusa Sugandh 2 (PS2) cultivar, a highly scented Basmati cultivar. The OsiCRY2OX transgenics displayed shorter coleoptiles and dwarfism than wild-type under blue light, white, and far-red light. Interestingly, even the dark-grown transgenics were shorter, concomitant with higher OsiCRY2 protein levels in transgenics than wild-type. Histological analysis revealed that the decrease in the length of the seedlings was due to a decrease in the length of the epidermal cells. The fully mature rice transgenics were shorter than the untransformed plants but flowered at the same time as wild-type. However, the OsiCRY2 Arabidopsis over-expressors exhibited early flowering by 10-15 days, indicating the potential and conservation of function of OsiCRY2. The whole-genome transcriptome profiling of rice transgenics revealed the differential up-regulation of several light-regulated genes in dark-grown coleoptiles. These data provide evidence that OsiCRY2 regulates photomorphogenesis, plant height, and flowering in indica rice.
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Affiliation(s)
- Shipra Singh
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
| | - Pooja Sharma
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
- Proteus Genomics, 218 Summit Parkway, Birmingham, AL, 35209, USA
| | - Sushma Mishra
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
- Department of Botany, University of Lucknow, Lucknow, 226007, India
| | - Paramjit Khurana
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India.
| | - Jitendra P Khurana
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, 110021, India
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Tominaga S, Yoshioka H, Yokota S, Tsukiboshi Y, Suzui M, Nagai M, Hara H, Maeda T, Miura N. Copper-induced diurnal hepatic toxicity is associated with Cry2 and Per1 in mice. Environ Health Prev Med 2023; 28:78. [PMID: 38092388 PMCID: PMC10739358 DOI: 10.1265/ehpm.23-00205] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 11/07/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND This study aimed to investigate diurnal variations in copper-induced hepatic toxicity and the molecular mechanisms underlying this chronotoxicity. METHODS Male C57BL/6J mice were intraperitoneally injected with copper chloride (CuCl2) at zeitgeber time 2 (ZT2) or 14 (ZT14), twice per week for 5 or 8 weeks. Seventy-two hours after the final CuCl2 injection, the mice were euthanized, and plasma samples were collected. The livers and kidneys were collected and weighed. In vitro experiments were performed to assess cell viability and fluctuations in clock gene expression levels in Hepa1-6 cells after CuCl2 treatment. We examined copper homeostasis- and apoptosis-related genes under clock genes overexpression. RESULTS Repeated CuCl2 administration for 8 weeks resulted in more severe toxicity at ZT14 compared to ZT2. CuCl2 administration at ZT14 elevated plasma aspartate aminotransferase, hepatic tumor necrosis factor-α, and interleukin-6 for 5 weeks, whereas the toxic effects of CuCl2 administration at ZT2 were weaker. Moreover, CuCl2 treatment inhibited Hepa1-6 cell viability in a dose-dependent manner. We observed increased expression of three clock genes (Ciart, Cry2, and Per1) after CuCl2 treatment. Among them, overexpression of Cry2 and Per1 accelerated CuCl2-induced inhibition of Hepa1-6 cell viability. Moreover, we found that the overexpression of Cry2 and Per1 regulates cleaved caspase-3 by modulating the copper transporter genes ATP7B and CTR1. CONCLUSION These results suggest that CuCl2-induced diurnal toxicity is associated with Cry2 and Per1 expression through the regulation of copper transporter genes in mice.
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Affiliation(s)
- Sarah Tominaga
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyamaku, Nagoya, Aichi 463-8521, Japan
- Department of Neurotoxicology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Hiroki Yoshioka
- Faculty of Pharmacy, Gifu University of Medical Science, 4-3-3 Nijigaoka, Kani, Gifu 509-0293, Japan
| | - Satoshi Yokota
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Sciences, 3-25-26 Tono-machi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
| | - Yosuke Tsukiboshi
- Faculty of Pharmacy, Gifu University of Medical Science, 4-3-3 Nijigaoka, Kani, Gifu 509-0293, Japan
| | - Masumi Suzui
- Department of Neurotoxicology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Makoto Nagai
- Graduate School of Health and Medicine, Gifu University of Medical Science, 795-1 Nagamine Ichihiraga, Seki, Gifu 501-3892, Japan
| | - Hirokazu Hara
- Laboratory of Clinical Pharmaceutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, Gifu 501-1196, Japan
| | - Tohru Maeda
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyamaku, Nagoya, Aichi 463-8521, Japan
| | - Nobuhiko Miura
- Department of Health Science, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa 245-2006, Japan
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Parmagnani AS, D'Alessandro S, Maffei ME. Iron-sulfur complex assembly: Potential players of magnetic induction in plants. Plant Sci 2022; 325:111483. [PMID: 36183809 DOI: 10.1016/j.plantsci.2022.111483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/19/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Iron-sulfur (Fe-S) clusters are involved in fundamental biological reactions and represent a highly regulated process involving a complex sequence of mitochondrial, cytosolic and nuclear-catalyzed protein-protein interactions. Iron-sulfur complex assembly (ISCA) scaffold proteins are involved in Fe-S cluster biosynthesis, nitrogen and sulfur metabolism. ISCA proteins are involved in abiotic stress responses and in the pigeon they act as a magnetic sensor by forming a magnetosensor (MagS) complex with cryptochrome (Cry). MagR gene exists in the genomes of humans, plants, and microorganisms and the interaction between Cry and MagR is highly conserved. Owing to the extensive presence of ISCA proteins in plants and the occurrence of homology between animal and human MagR with at least four Arabidopsis ISCAs and several ISCAs from different plant species, we believe that a mechanism similar to pigeon magnetoperception might be present in plants. We suggest that plant ISCA proteins, homologous of the animal MagR, are good candidates and could contribute to a better understanding of plant magnetic induction. We thus urge more studies in this regard to fully uncover the plant molecular mechanisms underlying MagR/Cry mediated magnetic induction and the possible coupling between light and magnetic induction.
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Affiliation(s)
- Ambra S Parmagnani
- Dept. Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | - Stefano D'Alessandro
- Dept. Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | - Massimo E Maffei
- Dept. Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy.
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42
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An ML, Miao JL. [Genetic and Molecular Characterization of a DASH Cryptochrome Homologous Gene from Antarctic Diatom Phaeodactylum tricornutum ICE-H]. Mol Biol (Mosk) 2022; 56:1083-1084. [PMID: 36475491 DOI: 10.31857/s0026898422060027] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/05/2022] [Indexed: 06/17/2023]
Abstract
DASH-type cryptochromes (cry-DASH) belong to cryptochrome/photolyase family (CPF), that includes photolyases with the capability to repair UVB-induced DNA lesions and cryptochromes acting as photoreceptors without photorepair activity. However, recent studies demonstrated that cry-DASH can repair cyclobutane pyrimidine dimers (CPDs) in damaged single-stranded DNA (ssDNA). Up to now, cry-DASHs have been investigated in prokaryotes and eukaryotes. However, the characteristics and role of cry-DASH in Antarctic diatom were not elucidated. Here, a cry-DASH sequence (Pticry-DASH) of the Antarctic diatom Phaeodactylum tricornutum ICE-H was retrieved from the transcriptome data, amplified by RT-PCR, cloned, and then expressed in Escherichia coli. The phylogenetic analysis indicated that Pticry-DASH is most closely related to cry-DASH. The gene expression of Pticry-DASH under abiotic stress was investigated by RT-PCR. Significant transcript accumulation was revealed after exposure to UVB, blue light, high-intensity light, and high temperature. The Pticry-DASH was expressed in E. coli, purified and its activity was measured. Photo-reactivation experiments confirmed that Pticry-DASH can repair CPDs in ssDNA lesions. Taken together for the first time the cry-DASH has been identified in the Antarctic diatom. The properties and peculiarities of Pticry-DASH including UVB-induced CPDs repair function may promote the exploitation of Antarctic resources.
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Affiliation(s)
- M L An
- Rizhao Polytechnic, Department of Marine Technology, Shandong, Rizhao, 276826 China
| | - J L Miao
- First Institute of Oceanography, Ministry of Natural Resource, Shandong, Qingdao, 266061 China
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Rivera PD, Fraley GS. Research Note: Retinal cryptochrome gene expression is not altered by presence of light in incubators. Poult Sci 2022; 102:102272. [PMID: 36402038 PMCID: PMC9673095 DOI: 10.1016/j.psj.2022.102272] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 10/09/2022] [Accepted: 10/15/2022] [Indexed: 11/06/2022] Open
Abstract
Cryptochromes are blue-, or ultraviolet-, light-absorbing proteins involved in the circadian clock, blue/ultraviolet light perception and potentially magnetoreception. At least 4 separate cryptochrome genes have been identified in avian species. The purpose of this study was to first determine if cryptochrome genes are expressed in the developing duck retina, and second to determine if the presence of lights in incubators affects the expression of cryptochrome genes. To accomplish these goals, duck eggs were placed in one of 2 commercial incubators (Buckeye, Single Stage Incubator, Model, SS-112) at Maple Leaf Farms, Inc., one with "poultry" LEDs obtained from a commercial source (Once Innovation, Agrishift) and the other in the absence of light (dark). Eggs in the incubators were placed on a reciprocating tray, tilting to 45° to simulate the rotation of eggs; thus all eggs spent 50% facing the light source and the other 50% of time facing 45° away from light source. Temperature gradients and humidity were maintained at industry standards. Retinal tissue samples from light and dark incubators were collected on days 3, 7, 11, 16, and 21 of incubation (extraction day, ED) known to be anatomical hallmarks of visual system development (n = 9-18 treatment group/ED timepoint). Samples were prepped and assayed for Cry2 and GAPDH gene transcription using qRT-PCR. Data were analyzed by using 2-ddCt method and a 2-way ANOVA was performed. No significant differences in Cry2 gene expression were observed between the lighted or dark incubator (P > 0.10). When combining light and dark treatment groups there is a significant 9 P < 0.05) increase in retinal Cry2 at ED 21, compared to ED 3 and 7. The presence of cryptochrome does not necessitate a migratory drive as evidenced by the fact that the Cry2 expression has been shown in non-migratory birds. However, since blue/ultraviolet wavelengths also activate the Cry2 photoreceptor, its presence could explain reports that suggest duck welfare can be improved if housed under lights that include ultraviolet wavelengths.
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Affiliation(s)
- P D Rivera
- Biology Department, Hope College, Holland, MI 49422, USA
| | - G S Fraley
- Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
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Hickner PV, Mori A, Rund SSC, Severson DW. Quantitative Trait Locus Determining the Time of Blood Feeding in Culex pipiens (Diptera: Culicidae). J Med Entomol 2022; 59:1500-1506. [PMID: 35976948 PMCID: PMC9473656 DOI: 10.1093/jme/tjac118] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Indexed: 06/15/2023]
Abstract
Mosquitoes and other blood feeding arthropods are vectors of pathogens causing serious human diseases, such as Plasmodium spp. (malaria), Wuchereria bancrofti (lymphatic filariasis), Borrelia burgdorferi (Lyme disease), and viruses causing dengue, Zika, West Nile, chikungunya, and yellow fever. Among the most effective strategies for the prevention of vector-borne diseases are those aimed at reducing human-vector interactions, such as insecticide applications and insecticide-treated bed nets (ITNs). In some areas where ITNs are widely used, behavioral adaptations have resulted in mosquitoes shifting their time of blood feeding to earlier or later in the night when the bed nets are not being employed. Little is known about the genetic basis of these behavioral shifts. We conducted quantitative trait locus (QTL) analysis using two strains of Culex pipiens sensu lato with contrasting blood feeding behaviors, wherein the lab adapted Shasta strain blood feeds at any time of the day or night, while the newly established Trinidad strain feeds only at night. We identified a single locus on chromosome 2 associated with the observed variation in feeding times. None of the core clock genes period, timeless, clock, cycle, PAR-domain protein 1, vrille, discs overgrown, cryptochrome 1, or cryptochrome 2 were located within the QTL region. We then monitored locomotor behavior to determine if they differed in their flight activity. The highly nocturnal Trinidad strain showed little daytime activity while the day-feeding Shasta strain was active during the day, suggesting blood feeding behavior and flight activity are physiologically linked.
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Affiliation(s)
- Paul V Hickner
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory, Kerrville, TX 78028, USA
| | - Akio Mori
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Samuel S C Rund
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
- Center for Research Computing, University of Notre Dame, Notre Dame, IN 46556, USA
| | - David W Severson
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
- Department of Life Sciences, University of the West Indies, Saint Augustine, Trinidad, West Indies
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, USA
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Au DD, Foden AJ, Park SJ, Nguyen TH, Liu JC, Tran MD, Jaime OG, Yu Z, Holmes TC. Mosquito cryptochromes expressed in Drosophila confer species-specific behavioral light responses. Curr Biol 2022; 32:3731-3744.e4. [PMID: 35914532 PMCID: PMC9810238 DOI: 10.1016/j.cub.2022.07.021] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/28/2022] [Accepted: 07/08/2022] [Indexed: 01/07/2023]
Abstract
Cryptochrome (CRY) is a short-wavelength light-sensitive photoreceptor expressed in a subset of circadian neurons and eyes in Drosophila that regulates light-evoked circadian clock resetting. Acutely, light evokes rapid electrical excitation of the ventral lateral subset of circadian neurons and confers circadian-modulated avoidance behavioral responses to short-wavelength light. Recent work shows dramatically different avoidance versus attraction behavioral responses to short-wavelength light in day-active versus night-active mosquitoes and that these behavioral responses are attenuated by CRY protein degradation by constant light exposure in mosquitoes. To determine whether CRY1s mediate species-specific coding for behavioral and electrophysiological light responses, we used an "empty neuron" approach and transgenically expressed diurnal Aedes aegypti (AeCRY1) versus nocturnal Anopheles gambiae (AgCRY1) in a cry-null Drosophila background. AeCRY1 is much less light sensitive than either AgCRY1 or DmCRY as shown by partial behavioral rhythmicity following constant light exposure. Remarkably, expression of nocturnal AgCRY1 confers low survival to constant white light as does expression of AeCRY1 to a lesser extent. AgCRY1 mediates significantly stronger electrophysiological cell-autonomous responses to 365 nm ultraviolet (UV) light relative to AeCRY1. AgCRY1 expression mediates electrophysiological sensitivity to 635 nm red light, whereas AeCRY1 does not, consistent with species-specific mosquito red light responses. AgCRY1 and DmCRY mediate intensity-dependent avoidance behavior to UV light at different light intensity thresholds, whereas AeCRY1 does not, thus mimicking mosquito and fly behaviors. These findings highlight CRY as a key non-image-forming visual photoreceptor that mediates physiological and behavioral light responses in a species-specific fashion.
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Affiliation(s)
- David D Au
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Alexander J Foden
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Soo Jee Park
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Thanh H Nguyen
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Jenny C Liu
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Mary D Tran
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Olga G Jaime
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Zhaoxia Yu
- Department of Statistics, Donald Bren School of Information and Computer Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
| | - Todd C Holmes
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA; Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA.
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Deppisch P, Helfrich-Förster C, Senthilan PR. The Gain and Loss of Cryptochrome/Photolyase Family Members during Evolution. Genes (Basel) 2022; 13:genes13091613. [PMID: 36140781 PMCID: PMC9498864 DOI: 10.3390/genes13091613] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 11/20/2022] Open
Abstract
The cryptochrome/photolyase (CRY/PL) family represents an ancient group of proteins fulfilling two fundamental functions. While photolyases repair UV-induced DNA damages, cryptochromes mainly influence the circadian clock. In this study, we took advantage of the large number of already sequenced and annotated genes available in databases and systematically searched for the protein sequences of CRY/PL family members in all taxonomic groups primarily focusing on metazoans and limiting the number of species per taxonomic order to five. Using BLASTP searches and subsequent phylogenetic tree and motif analyses, we identified five distinct photolyases (CPDI, CPDII, CPDIII, 6-4 photolyase, and the plant photolyase PPL) and six cryptochrome subfamilies (DASH-CRY, mammalian-type MCRY, Drosophila-type DCRY, cnidarian-specific ACRY, plant-specific PCRY, and the putative magnetoreceptor CRY4. Manually assigning the CRY/PL subfamilies to the species studied, we have noted that over evolutionary history, an initial increase of various CRY/PL subfamilies was followed by a decrease and specialization. Thus, in more primitive organisms (e.g., bacteria, archaea, simple eukaryotes, and in basal metazoans), we find relatively few CRY/PL members. As species become more evolved (e.g., cnidarians, mollusks, echinoderms, etc.), the CRY/PL repertoire also increases, whereas it appears to decrease again in more recent organisms (humans, fruit flies, etc.). Moreover, our study indicates that all cryptochromes, although largely active in the circadian clock, arose independently from different photolyases, explaining their different modes of action.
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Sharma P, Mishra S, Burman N, Chatterjee M, Singh S, Pradhan AK, Khurana P, Khurana JP. Characterization of Cry2 genes (CRY2a and CRY2b) of B. napus and comparative analysis of BnCRY1 and BnCRY2a in regulating seedling photomorphogenesis. Plant Mol Biol 2022; 110:161-186. [PMID: 35831732 DOI: 10.1007/s11103-022-01293-6] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Cryptochrome 2 (CRY2) perceives blue/UV-A light and regulates photomorphogenesis in plants. However, besides Arabidopsis, CRY2 has been functionally characterized only in native species of japonica rice and tomato. In the present study, the BnCRY2a, generating a relatively longer cDNA and harboring an intron in its 5'UTR, has been characterized in detail. Western blot analysis revealed that BnCRY2a is light labile and degraded rapidly by 26S proteasome when seedlings are irradiated with blue light. For functional analysis, BnCRY2a was over-expressed in Brassica juncea, a related species more amenable to transformation. The BnCRY2a over-expression (BnCRY2aOE) transgenics developed short hypocotyl and expanded cotyledons, accumulated more anthocyanin in light-grown seedlings, and displayed early flowering on maturity. Early flowering in BnCRY2aOE transgenics was coupled with the up-regulation of many flowering-related genes such as FT. The present study also highlights the differential light sensitivity of cry1 and cry2 in controlling hypocotyl elongation growth in Brassica. BnCRY2aOE seedlings developed much shorter hypocotyl under the low-intensity of blue light, while BnCRY1OE seedling hypocotyls were shorter under the high-intensity blue light, compared to untransformed seedlings.
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Affiliation(s)
- Pooja Sharma
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India
- Proteus Genomics, 218 Summit Parkway, Birmingham, AL, 35209, USA
| | - Sushma Mishra
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India
| | - Naini Burman
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India
| | - Mithu Chatterjee
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India
- AeroFarms, Newark, NJ, 07105, USA
| | - Shipra Singh
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India
| | - Akshay K Pradhan
- Department of Genetics, University of Delhi South Campus, New Delhi, 110021, India
| | - Paramjit Khurana
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India.
| | - Jitendra P Khurana
- Department of Plant Molecular Biology & Interdisciplinary Centre for Plant Genomics, University of Delhi South Campus, New Delhi, 110021, India
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48
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Gao L, Liu Q, Zhong M, Zeng N, Deng W, Li Y, Wang D, Liu S, Wang Q. Blue light-induced phosphorylation of Arabidopsis cryptochrome 1 is essential for its photosensitivity. J Integr Plant Biol 2022; 64:1724-1738. [PMID: 35894630 DOI: 10.1111/jipb.13331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Plants possess two cryptochrome photoreceptors, cryptochrome 1 (CRY1) and cryptochrome 2 (CRY2), that mediate overlapping and distinct physiological responses. Both CRY1 and CRY2 undergo blue light-induced phosphorylation, but the molecular details of CRY1 phosphorylation remain unclear. Here we identify 19 in vivo phosphorylation sites in CRY1 using mass spectrometry and systematically analyze the physiological and photobiochemical activities of CRY1 variants with phosphosite substitutions. We demonstrate that nonphosphorylatable CRY1 variants have impaired phosphorylation, degradation, and physiological functions, whereas phosphomimetic variants mimic the physiological functions of phosphorylated CRY1 to constitutively inhibit hypocotyl elongation. We further demonstrate that phosphomimetic CRY1 variants exhibit enhanced interaction with the E3 ubiquitin ligase COP1 (CONSTITUTIVELY PHOTOMORPHOGENIC 1). This finding is consistent with the hypothesis that phosphorylation of CRY1 is required for COP1-dependent signaling and regulation of CRY1. We also determine that PHOTOREGULATORY PROTEIN KINASEs (PPKs) phosphorylate CRY1 in a blue light-dependent manner and that this phosphorylation is critical for CRY1 signaling and regulation. These results indicate that, similar to CRY2, blue light-dependent phosphorylation of CRY1 determines its photosensitivity.
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Affiliation(s)
- Lin Gao
- College of Life Sciences, Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Qing Liu
- School of Life Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - Ming Zhong
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Nannan Zeng
- College of Life Sciences, Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Weixian Deng
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Yaxing Li
- College of Life Sciences, Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Dong Wang
- College of Life Sciences, Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Siyuan Liu
- College of Life Sciences, Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Qin Wang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Ma C, Yang C, Xie T, Dai W, Ma J. Meta-Analysis of Mechanism of Influence of CRY2 on the Differentiation of Mouse Osteoblast through the Regulation of Wnt/ Β-Catenin Signaling Pathway. Biomed Res Int 2022; 2022:3727165. [PMID: 36046448 PMCID: PMC9420604 DOI: 10.1155/2022/3727165] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/13/2022] [Accepted: 05/20/2022] [Indexed: 11/25/2022]
Abstract
Noncoding RNAs were discovered to control a variety of developmental mechanisms, including osteogenesis. According to emerging evidence, cryptochrome circadian-regulating (CRY) proteins have emerged as essential controllers of osteoblast differentiation. The linked processes, on the other hand, are still unknown. The specific process that underpins osteoblast differentiation and proliferation is yet unknown. This research gives a meta-analysis of CRY2's impact on mouse osteoblast differentiation via the control of the WNT/β-catenin signaling pathways. Western blot and quantitative real-time PCR were used to identify Cry2 expression levels, components in the osteoblast-associated signaling pathway, and osteoblast transcription markers. The osteogenic condition was measured utilizing alkaline phosphatase (ALP) and alizarin red (AR) staining, whereas cell growth rates were measured using CCK8 assays. An ectopic bone formation experiment was used to determine the osteogenic potential of osteoblasts. Cry2 stimulates the osteogenic development of mouse osteoblasts through canonical Wnt/β-catenin signaling, according to the findings.
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Affiliation(s)
- Chao Ma
- People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
| | - Chaojian Yang
- Ningxia Medical University, Yinchuan, Ningxia, China
| | - Tong Xie
- Ningxia Medical University, Yinchuan, Ningxia, China
| | - Wenjuan Dai
- People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
| | - Jun Ma
- People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
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50
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Lindbäck LN, Hu Y, Ackermann A, Artz O, Pedmale UV. UBP12 and UBP13 deubiquitinases destabilize the CRY2 blue light receptor to regulate Arabidopsis growth. Curr Biol 2022; 32:3221-3231.e6. [PMID: 35700731 PMCID: PMC9378456 DOI: 10.1016/j.cub.2022.05.046] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 03/22/2022] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
Abstract
Light is a crucial exogenous signal sensed by cryptochrome (CRY) blue light receptors to modulate growth and the circadian clock in plants and animals. However, how CRYs interpret light quantity to regulate growth in plants remains poorly understood. Furthermore, CRY2 protein levels and activity are tightly regulated in light to fine-tune hypocotyl growth; however, details of the mechanisms that explain precise control of CRY2 levels are not fully understood. We show that in Arabidopsis, UBP12 and UBP13 deubiquitinases physically interact with CRY2 in light. UBP12/13 negatively regulates CRY2 by promoting its ubiquitination and turnover to modulate hypocotyl growth. Growth and development were explicitly affected in blue light when UBP12/13 were disrupted or overexpressed, indicating their role alongside CRY2. UBP12/13 also interacted with and stabilized COP1, which is partially required for CRY2 turnover. Our combined genetic and molecular data support a mechanistic model in which UBP12/13 interact with CRY2 and COP1, leading to the stabilization of COP1. Stabilized COP1 then promotes the ubiquitination and degradation of CRY2 under blue light. Despite decades of studies on deubiquitinases, the knowledge of how their activity is regulated is limited. Our study provides insight into how exogenous signals and ligands, along with their receptors, regulate deubiquitinase activity by protein-protein interaction. Collectively, our results provide a framework of cryptochromes and deubiquitinases to detect and interpret light signals to control plant growth at the most appropriate time.
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Affiliation(s)
- Louise N Lindbäck
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | - Yuzhao Hu
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | - Amanda Ackermann
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | - Oliver Artz
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | - Ullas V Pedmale
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.
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