scholarly journals Evaluation of a canine transmissible venereal tumour cell line with tumour immunity capacity but without tumorigenic property

2019 ◽  
Vol 63 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Yareellys Ramos Zayas ◽  
Moisés Armides Franco Molina ◽  
Reyes Tamez Guerra ◽  
Cristina Rodríguez Padilla
Keyword(s):  
Cell Line ◽  
Financial Burden ◽  
Morphological Characteristics ◽  
Tumour Cells ◽  
Tumour Cell Line ◽  
Histopathological Analysis ◽  
Isolated Cells ◽  
Tumour Immunity ◽  
Canine Transmissible Venereal Tumour ◽  
Transmissible Venereal Tumour

AbstractIntroduction:Canine transmissible venereal tumour (CTVT) is a sexually transmitted tumour affecting dogs worldwide, imposing a financial burden on dog owners. A stable culture cell line in continuous passages for >18 months has only been achieved once. The present study investigated a stable CTVT cell line isolated from a bitch and its potential as a vaccine.Material and Methods:A biopsy from a 2-year-old mongrel bitch with CTVT was obtained for histopathological confirmation and isolation of tumour cells. The isolated cells were cultured to passage 55 and characterised by flow cytometry, with karyotyping by GTG-banding and by PCR detection of myc S-2 and LINE AS1. The isolated CTVT cell line was also used as a preventive vaccine in a canine model.Results:Histopathological analysis of the isolated tumour cells revealed typical CTVT characteristics. Constant proliferation and stable morphological characteristics were observed during culture. Phenotypic analysis determined the expression of HLA-DR+, CD5.1+, CD14+, CD45+, CD83+, CD163+, and Ly-6G-Ly-6C+. GTG-banding revealed a mean of 57 chromosomes in the karyotype with several complex chromosomal rearrangements. LINE-c-myc insertion in the isolated CTVT cell line at 550 bp was not detected. However, a 340-bp band was amplified. Isolated CTVT cell line inoculation at a concentration of 1×108did not induce tumour growth in bitches, nor did a challenge with primary CTVT cells.Conclusion:The present study successfully identified and isolated a stable CTVT cell line that may be useful in CTVT prevention.

Vasoactive intestinal peptide increases intracellular free calcium in rat and human pituitary tumour cells in vitro

1987 ◽  
Vol 114 (1) ◽  
pp. 119-123 ◽  
Author(s):  
R. A. Prysor-Jones ◽  
J. J. Silverlight ◽  
J. S. Jenkins
Keyword(s):  
Cell Line ◽  
Vasoactive Intestinal Peptide ◽  
Pituitary Tumour ◽  
Prolactin Secretion ◽  
Tumour Cells ◽  
Tumour Cell Line ◽  
Free Calcium ◽  
Human Pituitary ◽  
Epithelial Growth Factor

ABSTRACT Prolactin secretion by a human pituitary tumour cell line produced in our laboratory was stimulated by TRH, vasoactive intestinal peptide (VIP) and epithelial growth factor (EGF). All raised the intracellular concentration of free calcium (Ca2+i) of cells loaded with a fluorescent quinoline Ca2+ indicator in suspension, but the effect of TRH was much more rapid and less prolonged than that of VIP and EGF. Both TRH and VIP also increased Ca2+i in GH3 rat pituitary tumour cells, but in this cell line the effect of VIP was only found in attached cells grown on cover-slips. In both human and rat cell lines, the increase in Ca2+i produced by TRH was independent of extracellular calcium, whereas this was a requirement for the action of VIP and EGF. It is concluded that the prolactin secretogogues, VIP and probably EGF, increase Ca2+i through an effect on plasma membrane calcium channels and that this effect differs from that of TRH. J. Endocr. (1987) 114, 119–123

Aberrant Type C Virus Production in a Cell Line Derived from Balb/3T3

1972 ◽  
Vol 30 ◽  
pp. 286-287
Author(s):  
N. Savage ◽  
A. Hackett
Keyword(s):  
Electron Microscopy ◽  
Cell Line ◽  
Leukemia Virus ◽  
Morphological Characteristics ◽  
Virus Production ◽  
Oncogenic Viruses ◽  
Endogenous Virus ◽  
Virus Particles ◽  
Moloney Leukemia Virus ◽  
A Cell

A cell line, UC1-B, which was derived from Balb/3T3 cells, maintains the same morphological characteristics of the non-transformed parental culture, and shows no evidence of spontaneous virus production. Survey by electron microscopy shows that the cell line consists of spindle-shaped cells with no unusual features and no endogenous virus particles.UC1-B cells respond to Moloney leukemia virus (MLV) infection by a change in morphology and growth pattern which is typical of cells transformed by sarcoma virus. Electron microscopy shows that the cells are now variable in shape (rounded, rhomboid, and spindle), and each cell type has some microvilli. Virtually all (90%) of the cells show virus particles developing at the cell surface and within the cytoplasm. Maturing viruses, typical of the oncogenic viruses, are found along with atypical tubular forms in the same cell.

Antibodies in the sera of patients with bronchogenic carcinoma that react with antigen from a tumour cell line

1981 ◽  
Vol 12 (1) ◽  
pp. 5-10 ◽  
Author(s):  
Barbara S. Kelly ◽  
Ulrike Stredulinsky ◽  
Joan Vanden Hoek ◽  
Julia G. Levy
Keyword(s):  
Cell Line ◽  
Tumour Cell ◽  
Bronchogenic Carcinoma ◽  
Tumour Cell Line

scholarly journals Establishment and characterization of a human myeloid cell line from Philadelphia chromosome-negative myeloblastic leukemia arising in a patient with myelodysplastic syndrome

Blood ◽  
1987 ◽  
Vol 70 (5) ◽  
pp. 1665-1672
Author(s):  
TM McCarty ◽  
S Rajaraman ◽  
FF Elder ◽  
P Gadson ◽  
EB Thompson
Keyword(s):  
Myelodysplastic Syndrome ◽  
Cell Line ◽  
Cultured Cells ◽  
Specific Antigen ◽  
Philadelphia Chromosome ◽  
Morphological Characteristics ◽  
Nuclear Antigen ◽  
Terminal Deoxynucleotidyl Transferase ◽  
Complement Protein ◽  
Phenotypic Analysis

A new hematopoietic cell line derived from a patient with Philadelphia chromosome (Ph1)-negative myeloblastic leukemia arising from a form of myelodysplastic syndrome (MDS) is described. This cell line, designated TMM, consists of immature cells with the morphological characteristics of young myeloblasts and grows in suspension culture with a doubling time of about 30 hours. By cytochemical analysis the cultured cells were positive for acid phosphatase. They were free of the Epstein-Barr virus-associated nuclear antigen as well as terminal deoxynucleotidyl transferase. Further phenotypic analysis revealed the expression of the myelomonocytic-specific antigen Leu-M1 and receptors for the Fc portion of IgG. Partial differentiation of these cells could be induced by dimethyl sulfoxide, tetradecanoyl phorbol acetate, or hypoxanthine and resulted in cells of the myeloid series expressing lysozyme and receptors for the C3b complement protein. The karyotype was 46,XY, lacked the Ph1 chromosome, and displayed no abnormalities at the light microscopic level. No rearrangement of the bcr-c-abl gene complex was found. This cell line should be useful for studying an important type of the heterogeneous population constituting Ph1-negative myeloblastic leukemia, arising in this instance from MDS, as well as for studying differentiation and proliferation of human pluripotent stem cells.

Treatment of Canine Transmissible Venereal Tumour using Different Surgico-chemotherapeutic Protocols

2021 ◽  
Author(s):  
Nutan Punchkande ◽  
Rukmani Dewangan ◽  
Raju Sharda ◽  
D. Jolhe ◽  
Dhaleshwari Sahu ◽  
...  
Keyword(s):  
Biochemical Parameters ◽  
Histopathological Examination ◽  
Surgical Excision ◽  
Treatment Protocols ◽  
Post Surgery ◽  
Vincristine Sulphate ◽  
Group A ◽  
Group B ◽  
Canine Transmissible Venereal Tumour ◽  
Transmissible Venereal Tumour

Background: Canine transmissible venereal tumour (CTVT) also known as infectious sarcoma, venereal granuloma, transmissible lymphosarcoma or sticker tumour is usually transmitted through coitus and mainly affects the external genitalia of young sexually matured dogs. Surgery, chemotherapy, radiotherapy and immunotherapy are considered as effective treatment protocols. Therefore, depending upon the availability present study was designed to investigate the efficacy of different surgico-chemotherapeutic protocols for treatment of canine transmissible venereal tumour.Methods: The study was conducted during January 2018 to July 2018 at the Teaching Veterinary Clinical Complex (TVCC) and Department of Veterinary Surgery and Radiology, College of Veterinary Science and A.H., Anjora, Durg (C.G.) on 18 canines of various breed, irrespective of age, sex and divided into three groups consisting 6 animals in each group. Group A was treated with surgical excision of tumour only where as Group B and Group C were treated with surgical excision of tumour followed by administration of Doxorubicin (30mg/m2) BSA and Vincristine sulphate (0.025 mg/kg) intravenously alongwith DNS at 7th and 14th post-operative days respectively. Different physiological and haemato-biochemical parameters (Hb, PCV, TLC, TPC, DLC, serum glucose, TSP, SUN, SC, ALT, AST and ALP) were recorded preoperatively, postoperatively and after chemotherapy at 10th, 30th and 60th days intervals.Result: The present investigation showed transient changes in physiological and haemato-biochemical parameters before, post surgery and post chemotherapeutic management and was within normal range. Histopathological examination revealed confluent sheet of tumour cells arranged in large round oval or polyhedral shaped distributed in tight clusters or cords. Group A showed mild to moderated reoccurrence while Group B showed minimum reoccurrence. Group C showed no reoccurrence. Thus, surgery combined with vincristine therapy is most effective for treating dogs suffering with transmissible venereal tumour.

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