In the present work, we report the isolation and partial biochemical characterization of BpLec, a C-type lectin purified from Bothrops pauloensis venom by one chromatographic step on an affinity agarose column immobilized with d-galactose. This protein was homogeneous by SDS-PAGE under reducing and nonreducing conditions, and was shown to be a 33.6 kDa homodimer by MALDI TOF analysis. BpLec presented an isoeletric point of 5.36. Its partial sequence of 132 amino acids for each subunit, determined by Edman degradation, revealed high identity (between 86% and 95%) when aligned with sequences of other related proteins. BpLec was capable of agglutinating native dog and cat erythrocytes and this activity was inhibited by β-galactosides and EDTA. Its hemagglutinating activity was abolished at high temperatures and stable in any pH range. BpLec was effective in inhibiting Gram-positive but not Gram-negative bacteria. In addition, BpLec agglutinated promastigote forms of Leishmania (Leishmania) amazonensis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijbiomac.2012.11.018 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Expression of NKp46 and other activating inhibitory receptors on uterine endometrial NK cells in females with various reproductive failures: A review.
Reprod Med Biol
January 2025
Department of Obstetrics and Gynecology School of Medicine, Hyogo Medical University Nishinomiya Hyogo Japan.
Background: Uterine endometrial natural killer (uNK) cells represent major leukocytes in the mid-secretory phase of the cell cycle, and their number is further increased during early pregnancy. The activating and inhibitory receptors expressed on their surface mediate various functions of uNK cells, such as cytotoxicity, cytokine production, spiral artery remodeling, and self-recognition.
Methods: This study reviewed the most recent information (PubMed database, 175 articles included) regarding the activating and inhibitory receptors on uNK cells in human females with healthy pregnancies and the evidence indicating their significance in various reproductive failures.
Dectin-2 depletion alleviates osteoclast-induced bone loss in periodontitis via Syk/NOX2/ROS signaling.
Free Radic Biol Med
January 2025
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University. Electronic address:
Periodontitis is the sixth most common disease worldwide and is closely associated with various systemic diseases, impacting overall health. It is characterized by the over-differentiation and activity of osteoclasts, leading to increased bone resorption and subsequent bone loss. Current treatments for bone loss are not ideal, highlighting the need for new targeted therapeutic strategies.
View Article and Find Full Text PDFSnake venom galactoside-binding lectin from Bothrops jararacussu: Special role in leukocytes activation and function.
Int J Biol Macromol
January 2025
Fundação de Medicina Tropical - Dr Heitor Vieira Dourado, Manaus, AM, Brazil; Universidade Nilton Lins, Manaus, AM, Brazil. Electronic address:
Article Synopsis
- SVgalLs are toxins from Bothrops snake venoms that bind to galactose-containing carbohydrates in a calcium-dependent way.
- BjcuL, a key C-type lectin from Bothrops jararacussu venom, has been extensively studied for its role in inflammation by activating immune cell functions.
- The review discusses the current knowledge on snake venom lectins' effects in pathophysiology and outlines future research directions, including advanced technologies for discovering new therapeutic targets.
Defining Mechanistic Links Between the Non-Coding Variant rs17673553 in and Lupus Susceptibility.
Int J Mol Sci
January 2025
Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA.
Systemic lupus erythematosus (SLE) is a complex autoimmune disorder characterized by widespread inflammation and autoantibody production. Its development and progression involve genetic, epigenetic, and environmental factors. Although genome-wide association studies (GWAS) have repeatedly identified a susceptibility signal at 16p13, its fine-scale source and its functional and mechanistic role in SLE remain unclear.
View Article and Find Full Text PDFβ-Glucan induced plasma B cells differentiation to enhance antitumor immune responses by Dectin-1.
BMC Immunol
January 2025
Laboratory of Oncology, Medical Research Center, The Second People's Hospital of Changzhou, The Third Affiliated Hospital of Nanjing Medical University, Changzhou, China.
Background: B lymphocytes, essential in cellular immunity as antigen-presenting cells and in humoral immunity as major effector cells, play a crucial role in the antitumor response. Our previous work has shown β-glucan enhanced immunoglobulins (Ig) secretion. But the specific mechanisms of B-cell activation with β-glucan are poorly understood.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!