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Yi Y, Li Y, Zhang S, Men Y, Wang Y, Jing D, Ding J, Zhu Q, Chen Z, Chen X, Li JL, Wang Y, Wang J, Peng H, Zhang L, Luo W, Feng JQ, He Y, Ge WP, Zhao H. Mapping of individual sensory nerve axons from digits to spinal cord with the transparent embedding solvent system. Cell Res 2024; 34:124-139. [PMID: 38168640 PMCID: PMC10837210 DOI: 10.1038/s41422-023-00867-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 08/07/2023] [Indexed: 01/05/2024] Open
Abstract
Achieving uniform optical resolution for a large tissue sample is a major challenge for deep imaging. For conventional tissue clearing methods, loss of resolution and quality in deep regions is inevitable due to limited transparency. Here we describe the Transparent Embedding Solvent System (TESOS) method, which combines tissue clearing, transparent embedding, sectioning and block-face imaging. We used TESOS to acquire volumetric images of uniform resolution for an adult mouse whole-body sample. The TESOS method is highly versatile and can be combined with different microscopy systems to achieve uniformly high resolution. With a light sheet microscope, we imaged the whole body of an adult mouse, including skin, at a uniform 0.8 × 0.8 × 3.5 μm3 voxel resolution within 120 h. With a confocal microscope and a 40×/1.3 numerical aperture objective, we achieved a uniform sub-micron resolution in the whole sample to reveal a complete projection of individual nerve axons within the central or peripheral nervous system. Furthermore, TESOS allowed the first mesoscale connectome mapping of individual sensory neuron axons spanning 5 cm from adult mouse digits to the spinal cord at a uniform sub-micron resolution.
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Affiliation(s)
- Yating Yi
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Chinese Institute for Brain Research, Beijing, China
| | - Youqi Li
- Chinese Institute for Brain Research, Beijing, China
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Shiwen Zhang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yi Men
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yuhong Wang
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Dian Jing
- Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jiayi Ding
- Chinese Institute for Brain Research, Beijing, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Qingjie Zhu
- Chinese Institute for Brain Research, Beijing, China
| | - Zexi Chen
- Chinese Institute for Brain Research, Beijing, China
| | - Xingjun Chen
- Chinese Institute for Brain Research, Beijing, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Jun-Liszt Li
- Chinese Institute for Brain Research, Beijing, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Yilong Wang
- Chinese Institute for Brain Research, Beijing, China
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hanchuan Peng
- SEU-ALLEN Joint Center, Institute for Brain and Intelligence, Southeast University, Nanjing, Jiangsu, China
| | - Li Zhang
- Chinese Institute for Brain Research, Beijing, China
| | | | - Jian Q Feng
- Texas A&M University, College of Dentistry, Dallas, TX, USA
| | - Yongwen He
- Qujing Medical College, Qujing, Yunnan, China.
| | - Woo-Ping Ge
- Chinese Institute for Brain Research, Beijing, China.
| | - Hu Zhao
- Chinese Institute for Brain Research, Beijing, China.
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Singh S, Sharma AK, Gade HM, Agarwal V, Nasani R, Verma N, Sharma B. Stimuli-responsive and self-healing supramolecular Zn(II)-guanosine metal-organic gel for Schottky barrier diode application. SOFT MATTER 2024; 20:1025-1035. [PMID: 38197513 DOI: 10.1039/d3sm01405c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Spontaneous formation of a supramolecular metal-organic hydrogel using unsubstituted guanosine as a ligand and Zn2+ ions is reported. Guanosine, in the presence of NaOH, self-assembled into a stable G-quadruplex structure, which underwent crosslinking through Zn2+ ions to afford a stable hydrogel. The gel has been characterized using several spectroscopic as well as microscopic studies. The hydrogel demonstrated excellent stimuli responsiveness towards various chemicals and pH. Furthermore, the gel exhibited intrinsic thixotropic behavior and showed self-healing and injectable properties. The optical properties of the Zn-guanosine metallo-hydrogel suggested a semiconducting nature of the gel, which has been exploited for fabricating a thin film device based on a Schottky diode interface between metal and a semiconductor. The fabricated device shows excellent charge transport characteristics and linear rectifying behavior. The findings are likely to pave the way for newer research in the area of soft electronic devices fabricated using materials synthesized by employing simple biomolecules.
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Affiliation(s)
- Surbhi Singh
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India.
| | - Atul Kumar Sharma
- Department of Electronics and Communication Engineering, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India
| | - Hrushikesh M Gade
- Department of Chemical Engineering, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India
| | - Vidhi Agarwal
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Rajendar Nasani
- School of Chemistry, University of Hyderabad, Gachibowli, Hyderabad 500046, India
| | - Nisha Verma
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India.
| | - Bhagwati Sharma
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Malviya Nagar, Jaipur 302017, India.
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Pramanik A, Karimadom BR, Kornweitz H, Levine M. Sonication-Induced, Solvent-Selective Gelation of a 1,8-Napthalimide-Conjugated Amide: Structural Insights and Pollutant Removal Applications. ACS OMEGA 2021; 6:32722-32729. [PMID: 34901620 PMCID: PMC8655950 DOI: 10.1021/acsomega.1c04453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/01/2021] [Indexed: 06/14/2023]
Abstract
Reported herein is the synthesis, characterization, and dye removal applications of a highly solvent-selective organogel-forming amide, compound 1, which contains a 1,8-naphthalmide moiety, flexible n-hexyl chain, and benzene ring. This compound displayed remarkable solvent selectivity, with gel formation occurring only in the presence of alkylated aromatic solvents. Detailed structural characterization of the gels, combined with notable theoretical insights, is invoked to explain the highly selective gelation properties of compound 1, as is a comparison to non-gel forming structural isomer 2, which contains the same structural elements in a different arrangement. Finally, the ability of the gel derived from compound 1 to act as a reusable material for the efficient removal of cationic organic dyes from contaminated aqueous environments is also reported, with up to 11 repeated uses of the gel still maintaining the ability to effectively remove Rhodamine B.
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Tan T, Guo Z, Wang Y, Ji Y, Hu J, Zhang Y. Gelation of a Pentapeptide in Alcohols. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8961-8970. [PMID: 34297581 DOI: 10.1021/acs.langmuir.1c00841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Properties of solvents such as polarity and H-bond-forming ability are critical for the formation of an organogel and have a significant impact on the gel behavior, as solvents are the majority of organogel systems. However, so far, there is still a lack of systematic studies regarding the effects of molecular structures of solvents on the characteristics of organogels. Motivated by revealing such a relationship, in this paper, we studied the morphologies of assemblies, gelation behaviors, and secondary structures of a pentapeptide termed EAF-5 in a wide variety of alcohols. The side chains and lengths of carbon chains of the solvent molecules were found to play a critical role in the self-assembly and gelation of EAF-5. EAF-5 was capable of self-assembling into fibers and entangling into a network in alcohols including ethanol, propanol, butanol, n-pentanol, and n-hexanol, which further immobilized the corresponding alcohols to form gels. In these organogels, increasing β-sheet secondary structures of the peptides were formed by introducing side chains and extending the length of primary alcohol molecules. We hypothesized that alcohol molecules with extended lengths and side chains reduced the gelator-solvent interactions and promoted the gelator-gelator interactions, resulting in the self-assembly of EAF-5 into fibril structures and development of gels. These findings provide a new sight into the interactions between gelators and solvents and are helpful for designing peptide-based organogelators.
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Affiliation(s)
- Tingyuan Tan
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen Guo
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yujiao Wang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuwen Ji
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Hu
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yi Zhang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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Chandrasekharan SV, Krishnan N, Atchimnaidu S, Raj G, P. K. AK, Sagar S, Das S, Varghese R. Blue-emissive two-component supergelator with aggregation-induced enhanced emission. RSC Adv 2021; 11:19856-19863. [PMID: 35479242 PMCID: PMC9033671 DOI: 10.1039/d1ra03751j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 05/28/2021] [Indexed: 11/21/2022] Open
Abstract
Two-component organogels offer several advantages over one-component gels, but their design is highly challenging. Hence, it is extremely important to design new approaches for the crafting of two-component organogels with interesting optical and mechanical properties. Herein, we report the design of a new class of two-component supergelators obtained from the assembly between acid functionalized tetraphenylethylene (TPE)-based dendrons and alkylated melamine. No gelation behaviour is observed for the individual components, but interestingly, remarkable gelation behaviour is observed for their hydrogen-bonded complex. The primary driving force responsible for the gelation is the strong π–π stacking interaction of TPE units. Because of the strong π-stacking of TPEs in the gel state, the C(sp2)–C(sp2) bond rotation of the TPE segment is completely arrested in the gel state, which results in intense fluorescence emission of the gels. Furthermore, excellent elastic response is observed for the gels as evident from their high storage modulus compared to loss modulus values. Our results clearly demonstrate that by the appropriate selection of the molecular components, this approach can be applied for the creation of functional nanomaterials with emergent properties absent in the individual blocks. Design of a novel class of two-component, highly emissive, low molecular weight supergelator is reported.![]()
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Affiliation(s)
| | - Nithiyanandan Krishnan
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
| | - Siriki Atchimnaidu
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
| | - Gowtham Raj
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
| | - Anusree Krishna P. K.
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
| | - Soumya Sagar
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
| | - Suresh Das
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
| | - Reji Varghese
- School of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Thiruvananthapuram
- India
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