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Rac M. Synthesis and Regulation of miRNA, Its Role in Oncogenesis, and Its Association with Colorectal Cancer Progression, Diagnosis, and Prognosis. Diagnostics (Basel) 2024; 14:1450. [PMID: 39001340 PMCID: PMC11241650 DOI: 10.3390/diagnostics14131450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/27/2024] [Accepted: 07/05/2024] [Indexed: 07/16/2024] Open
Abstract
The dysfunction of several types of regulators, including miRNAs, has recently attracted scientific attention for their role in cancer-associated changes in gene expression. MiRNAs are small RNAs of ~22 nt in length that do not encode protein information but play an important role in post-transcriptional mRNA regulation. Studies have shown that miRNAs are involved in tumour progression, including cell proliferation, cell cycle, apoptosis, and tumour angiogenesis and invasion, and play a complex and important role in the regulation of tumourigenesis. The detection of selected miRNAs may help in the early detection of cancer cells, and monitoring changes in their expression profile may serve as a prognostic factor in the course of the disease or its treatment. MiRNAs may serve as diagnostic and prognostic biomarkers, as well as potential therapeutic targets for colorectal cancer. In recent years, there has been increasing evidence for an epigenetic interaction between DNA methylation and miRNA expression in tumours. This article provides an overview of selected miRNAs, which are more frequently expressed in colorectal cancer cells, suggesting an oncogenic nature.
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Affiliation(s)
- Monika Rac
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland
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Pinard M, Moursli A, Coulombe B. Drugs targeting the particle for arrangement of quaternary structure (PAQosome) and protein complex assembly. Expert Opin Drug Discov 2024; 19:57-71. [PMID: 37840283 DOI: 10.1080/17460441.2023.2267974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/04/2023] [Indexed: 10/17/2023]
Abstract
INTRODUCTION The PAQosome is a 12-subunit complex that acts as a co-factor of the molecular chaperones HSP90 and HSP70. This co-chaperone has been shown to participate in assembly and maturation of several protein complexes, including nuclear RNA polymerases, RNA processing factors, the ribosome, PIKKs, and others. Subunits of the PAQosome, adaptors, and clients have been reported to be involved in various diseases, making them interesting targets for drug discovery. AREA COVERED In this review, the authors cover the detailed mechanisms of PAQosome and chaperone function. Specifically, the authors summarize the status of the PAQosome and some related chaperones and co-chaperones as candidate targets for drug discovery. Indeed, a number of compounds are currently being tested for the development of treatments against diseases, such as cancers and neurodegenerative conditions. EXPERT OPINION Searching for new drugs targeting the PAQosome requires a better understanding of PAQosome subunit interactions and the discovery of new interaction partners. Thus, PAQosome subunit crystallization is an important experiment to initiate virtual screening against new target and the development of in silico tools such as AlphaFold-multimer could accelerate the search for new interaction partner and determine more rapidly the interaction pocket needed for virtual drug screening.
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Affiliation(s)
- Maxime Pinard
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
| | - Asmae Moursli
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
| | - Benoit Coulombe
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
- Department of Biochemistry and Molecular Medicine, Université de Montréal, Montréal, Québec, Canada
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Fang B, Huang Z, Sun Y, Zhang W, Yu J, Zhang J, Dong H, Wang S. Small RNA sequencing provides insights into molecular mechanism of flower development in Rhododendron pulchrum Sweet. Sci Rep 2023; 13:17912. [PMID: 37864069 PMCID: PMC10589353 DOI: 10.1038/s41598-023-44779-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/12/2023] [Indexed: 10/22/2023] Open
Abstract
Rhododendron pulchrum sweet, a member of the Ericaceae family possessing valuable horticultural properties, is widely distributed in the temperate regions. Though serving as bioindicator of metal pollution, the molecular mechanism regulating flowering in R. pulchrum is very limited. Illumina sequencing was performed to identify critical miRNAs in the synthesis of flavonoids at different developmental stages. Totally, 722 miRNAs belonging to 104 families were screened, and 84 novel mature miRNA sequences were predicted. The miR166, miR156, and miR167-1 families were dominant. In particular, 126 miRNAs were significantly differentially expressed among four different flowering stages. Totally, 593 genes were differentially regulated by miRNAs during the flower development process, which were mostly involved in "metabolic pathways", "plant hormone signal transduction", and "mitosis and regulation of biosynthetic processes". In pigment biosynthesis and signal transduction processes, gra-miR750 significantly regulated the expression of flavonoid 3',5'-hydroxylase; aof-miR171a, aof-miR171b, aof-miR171c, cas-miR171a-3p, and cas-miR171c-3p could regulate the expression of DELLA protein; aof-miR390, aof-miR396b, ath-miR3932b-5p, cas-miR171a-3p, aof-miR171a, and aof-miR171b regulated BAK1 expression. This research showed great potentials for genetic improvement of flower color traits for R. pulchrum and other Rhododendron species.
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Affiliation(s)
- Bo Fang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Zhiwei Huang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Yirong Sun
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Wanjing Zhang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Jiaojun Yu
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Jialiang Zhang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Hongjin Dong
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China
| | - Shuzhen Wang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei, People's Republic of China.
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Virciglio C, Manival X, Rederstorff M. [A new mechanism of control of miRNA maturation?]. Med Sci (Paris) 2022; 38:629-631. [PMID: 36094226 DOI: 10.1051/medsci/2022089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
| | - Xavier Manival
- Université de Lorraine, CNRS, IMoPA, F-54000 Nancy, France
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