Ask about this productRelated genes to: TBC1D21 antibody
- Gene:
- TBC1D21 NIH gene
- Name:
- TBC1 domain family member 21
- Previous symbol:
- -
- Synonyms:
- MGC34741, MgcRabGAP
- Chromosome:
- 15q24.1
- Locus Type:
- gene with protein product
- Date approved:
- 2005-01-05
- Date modifiied:
- 2016-10-05
Related products to: TBC1D21 antibody
Related articles to: TBC1D21 antibody
- Fertility traits are pivotal to the productivity and sustainability of dairy production systems; however, their genetic improvement remains constrained due to complex polygenic control and low heritability. Genome-wide association studies (GWAS) offer a powerful approach to identify genomic regions underlying reproductive traits, particularly in tropically adapted indigenous breeds like Sahiwal cattle, which exhibit resilience to environmental stress. This study aimed to elucidate the genetic basis of 8 fertility traits in 303 Sahiwal animals using 50 K SNP genotyping. Animals were genotyped with the Illumina BovineSNP50 BeadChip, and 26,267 high-quality SNPs were retained post quality control. Fertility traits analyzed in heifers included age at first calving (HAFC), interval between first and last insemination (HIFL), and number of services per conception (HNSPC); in cows, traits included cow pregnancy rate (CPR), number of services per conception (CNSPC), interval between first and last insemination (CIFL), service period (CSP), and calving-to-first insemination interval (CICAI). Phenotypic records were pre-adjusted for non-genetic factors such as year and season of birth or calving, and population structure was corrected using principal components. A total of 31 single-nucleotide polymorphisms (SNPs) were identified as significantly associated with these fertility traits, 13 in heifers and 18 in cows. Gene annotation of associated loci revealed several biologically relevant candidates, including DMXL2, SCG3, SIX2, CELSR1, and TRNAE-UUC for heifers, and PLA2G7, ADGRF5, RSRC1, TBC1D21, SPRED1, and FAM98B for cows. Evidence of shared SNPs across various traits indicates pleiotropic genetic control of fertility, with CNSPC-associated genes (SPRED1, RASGRP1, FAM98B), implicating Ras-MAPK-ERK signaling, immune regulation, and RNA processing in conception efficiency. These genes are involved in neuroendocrine regulation, gametogenesis, lipid metabolism, and early embryonic development. These findings provide candidate genomic regions for further validation and potential incorporation into fertility-focused genomic selection programs in tropical dairy cattle. - Source: PubMed
Publication date: 2026/09/22
Pal PritamDas PradyutMahar KaranSahana V NLalremruati Phoebe CBhat UbaidullahGowane Gopal RVohra VikasAlex Rani - High motility spermatozoa are good for cryopreservation and artificial insemination (AI) of mammalian semen. In this study, normal motility (NM) and low motility (LM) Mediterranean buffalo spermatozoa were compared using quantitative proteomics and phosphoproteomics techniques to screen for important proteins and phosphorylated proteins related to the motility of spermatozoa and to identify candidate protein molecular markers related to the quality of Mediterranean buffalo semen. Proteomics results identified 2550 proteins, with 119 proteins upregulated and 146 proteins downregulated in the LM spermatozoa versus the NM spermatozoa. The differentially abundant proteins were mainly involved in carbohydrate metabolism, glycolysis/gluconeogenesis, and tricarboxylic acid cycles. The phosphoproteomics analysis revealed 412 proteins, 1228 phosphorylated peptides, and 1465 phosphorylation modification sites. Compared to the NM group, 119 peptides were downregulated in the LM group, corresponding to 98 proteins, and 84 phosphorylated peptides were upregulated in the white matter, corresponding to 61 proteins. Differentially phosphorylated proteins were primarily involved in spermatogenesis, flagellate sperm motility, and glycolysis/gluconeogenesis. The combined proteomics and phosphoproteomics results identified the common proteins HMGB4, POC1B, PKM, LDHA, TBC1D21, and CBY2, whose main roles were related to spermatogenesis, sperm flagellar structure, and energy metabolism, which can be used as potential markers of Mediterranean buffalo sperm quality. - Source: PubMed
Publication date: 2025/02/15
Xue QingsongRen XuanXu TairanYang TingSun LeLuo XiHuang ShihaiShi DeshunLi Xiangping - The oral cavity harbors a plethora of bacterial species. Dysbiosis of oral and gut microbiota is associated with several oral and systemic pathologies, such as cancer, obesity, diabetes, atherosclerosis and gastrointestinal diseases. Imbalance in the oral-gut microbial axis has been associated with head and neck squamous cell carcinoma (HNSCC). This study aims to analyze the bacterial profile of HNSCC across various taxonomic units, investigate molecular patterns associated with prevalent bacterial phylum in HNSCC, and compare the bacterial profile in HNSCC and gastrointestinal (GI) carcinoma using computational analysis. - Source: PubMed
Publication date: 2025/02/03
Kavitha LoganathanKuzhalmozhi ManogaranVijayashree Priyadharsini JayaseelanArun Kumar ArunachalamUmadevi Krishna Mohan RaoRanganathan Kannan - Approximately 7% of the males exhibit reduced fertility; however, the regulatory genes and pathways involved remain largely unknown. TBC1 domain family member 21 (TBC1D21) contains a conserved RabGAP catalytic domain that induces GDP/GTP exchange to inactivate Rabs by interacting with microtubules. We previously reported that Tbc1d21-null mice exhibit severe sperm tail defects with a disrupted axoneme, and that TBC1D21 interacts with RAB10. However, the pathological mechanisms underlying the Tbc1d21 loss-induced sperm tail defects remain unknown. - Source: PubMed
Publication date: 2024/06/01
Pan Pei-YiKe Chih-ChunWang Ya-YunLin Yu-HuaKu Wei-ChiAu Chin-FongChan Chying-ChyuanHuang Chia-YenLin Ying-Hung - The function of dopamine receptor D2 (D2R) is well associated with sperm motility; however, the physiological role of D2R present on testicular cells remains elusive. The aim of the present study is to delineate the function of testicular D2R. Serum dopamine levels were found to decrease with age, whereas testicular D2R expression increased. In rat testicular sections, D2R immunolabeling was observed in interstitial cells, spermatogonia, spermatocytes and mature elongated spermatids, whereas tyrosine hydroxylase immunolabeling was selectively detected in Leydig cells. In vitro seminiferous tubule culture following bromocriptine (D2R agonist) treatment resulted in decreased cAMP levels. Microarray identified 1077 differentially expressed genes (511 up-regulated, 566 down-regulated). The majority of differentially expressed genes were present in post-meiotic cells including early and late spermatids, and sperm. Gene ontology elucidated processes related to extra-cellular matrix to be enriched and was supported by differential expression of various collagens and laminins, thereby indicating a role of dopamine in extra-cellular matrix integrity and transport of spermatids across the seminiferous epithelium. Gene ontology and enrichment map also highlighted cell/sperm motility to be significantly enriched. Therefore, genes involved in sperm motility functions were further validated by RT-qPCR. Seven genes (Akap4, Ccnyl1, Iqcf1, Klc3, Prss55, Tbc1d21, Tl18) were significantly up-regulated, whereas four genes (Dnah1, Dnah5, Clxn, Fsip2) were significantly down-regulated by bromocriptine treatment. The bromocriptine-stimulated reduction in seminiferous tubule cyclic AMP and associated changes in spermatid gene expression suggests that dopamine regulates both spermatogenesis and spermiogenesis within the seminiferous epithelium, and spermatozoa motility following spermiation, as essential processes for fertility. - Source: PubMed
Raut SanketaKhambata KushaanSingh DiptyBalasinor Nafisa H